WO2024093650A1 - Resource indication method and apparatus - Google Patents

Resource indication method and apparatus Download PDF

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Publication number
WO2024093650A1
WO2024093650A1 PCT/CN2023/124548 CN2023124548W WO2024093650A1 WO 2024093650 A1 WO2024093650 A1 WO 2024093650A1 CN 2023124548 W CN2023124548 W CN 2023124548W WO 2024093650 A1 WO2024093650 A1 WO 2024093650A1
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WO
WIPO (PCT)
Prior art keywords
time slot
terminal
reference signal
sci
pssch
Prior art date
Application number
PCT/CN2023/124548
Other languages
French (fr)
Chinese (zh)
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WO2024093650A9 (en
Inventor
徐姣姣
苏宏家
卢磊
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华为技术有限公司
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Publication of WO2024093650A1 publication Critical patent/WO2024093650A1/en
Publication of WO2024093650A9 publication Critical patent/WO2024093650A9/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink

Definitions

  • the present application relates to the field of wireless communication technology, and in particular to a resource indication method and device.
  • C-V2X Cellular vehicle-to-everything
  • Beam management is an important technology proposed by the fifth generation wireless communication system ( 5th generation, 5G) new radio (new radio, NR) for the second frequency range (frequency range 2, FR2). It is the process by which base stations and terminals obtain and maintain beam sets for sending and receiving, and then achieve high-gain communication with reasonable beam pairs.
  • 5G fifth generation wireless communication system
  • NR new radio
  • the beam management process of FR2 is designed for base stations and terminals, that is, the base station first performs coarse beam scanning and the terminal receives.
  • SL sidelink
  • both the transmitter and the receiver are terminals, and the beam management process in 5G NR is no longer applicable, and there is no standard support for related technical solutions.
  • the present application provides a resource indication method and apparatus for indicating time-frequency resources for transmitting a sidelink reference signal in a SL system.
  • a resource indication method is provided.
  • the method can be implemented by a second terminal, or by a chip/chip system.
  • the second terminal sends a physical sidelink control channel (PSCCH) to the first terminal.
  • PSCCH carries sidelink control information (SCI), which is used to indicate the time-frequency resources of a physical sidelink shared channel (PSSCH).
  • SCI sidelink control information
  • PSSCH physical sidelink shared channel
  • the second terminal sends a sidelink reference signal and PSSCH to the first terminal.
  • PSSCH only carries a media access control (MAC) control element (CE).
  • MAC media access control
  • CE media access control element
  • the sidelink reference signal is used for beam training.
  • PSCCH, PSSCH and sidelink reference signal are sent in the same time slot.
  • the sidelink reference signal includes a sidelink channel state control information reference signal (SL CSI-RS).
  • SL CSI-RS sidelink channel state control information reference signal
  • the separation structure of the side reference signal and the PSSCH associated data is considered, and only the time slot structure of the MAC CE and the side reference signal is filled in the PSSCH.
  • the above time slot structure can be used for the transmission beam training based on the side reference signal in the FR2 frequency band, which ensures the separation of the side reference signal and the associated data in the PSSCH, while avoiding the transmission of a standalone side reference signal.
  • a time domain resource set of a sidelink reference signal is selected, and intervals between two adjacent time slots in the time domain resource set are the same.
  • the second terminal selects a uniformly distributed time domain resource set to transmit the sidelink reference signal, and the sidelink reference signal can be used for beam training to implement beam training of the SL system in the FR2 frequency band.
  • the SCI indicates a time domain resource set of a sidelink reference signal, and the intervals between two adjacent time slots in the time domain resource set are the same.
  • the first terminal can receive the side reference signal sent on the time domain resource set.
  • the time domain resource set of the reference signal through SCI, other terminals in the SL system can perceive and avoid the time slot resources included in the time domain resource set.
  • the SCI includes period indication information, and the period indication information is used to indicate the period T.
  • the periodic time slot is indicated by the periodic indication information for transmitting the sideline reference signal, so as to realize the beam training of the SL system in the FR2 frequency band.
  • the periodic time slot indicated by the periodic indication information can also allow other terminals in the SL system to After sensing, the terminal avoids the periodic time slot resources.
  • the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
  • SCI indicates time domain resource information of a sidelink reference signal
  • the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer ranging from 1 to Q.
  • the time domain resource set of the sidelink reference signal includes time slot n and time slot n+ tq .
  • n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1.
  • the qth time slot offset tq among the Q time slot offsets is q times the 1st time slot offset t1 among the Q time slot offsets.
  • the time slot offset tq ' indicated by the SCI sent in time slot n+ t1 is the same as the time slot offset tq .
  • a resource indication method is provided.
  • the method may be implemented by a second terminal, or by a chip/chip system.
  • the second terminal sends a first PSCCH to the first terminal.
  • the first PSCCH carries a first SCI, and the first SCI is used to indicate the time-frequency resources of the first PSSCH.
  • the second terminal sends a first sideline reference signal and a first PSSCH to the first terminal.
  • the first sideline reference signal is used for beam training, and the first PSSCH only carries the first MAC CE.
  • the first PSCCH, the first PSSCH and the first sideline reference signal are sent in the same time slot.
  • the second terminal sends a second PSCCH to the first terminal.
  • the second PSCCH carries a second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH.
  • the second terminal sends a second sideline reference signal and a second PSSCH to the first terminal.
  • the second sideline reference signal is used for beam training, and the second PSSCH carries a second MAC CE and a MAC protocol data unit (PDU).
  • the second PSCCH, the second PSSCH and the second sideline reference signal are sent in the same time slot.
  • the resource selection of the side reference signal in the SL system on the FR2 frequency band is supported for the beam training process.
  • SCI can provide resource information of the side reference signal, which is used for other terminals in the SL system to exclude the resources indicated by SCI after perception to avoid collision.
  • a first time domain resource set of the first sidelink reference signal and the second sidelink reference signal is selected, and intervals between two adjacent time slots in time slots included in the first time domain resource set are the same.
  • the second terminal selects a uniformly distributed time domain resource set to transmit the sidelink reference signal, and the sidelink reference signal can be used for beam training to implement beam training of the SL system in the FR2 frequency band.
  • the first SCI and the second SCI indicate a first time domain resource set of the first sideline reference signal and the second sideline reference signal, and intervals between two adjacent time slots in the time slots included in the first time domain resource set are the same.
  • the first terminal can receive the side reference signal sent on the time domain resource set.
  • the time domain resource set of the reference signal through SCI, other terminals in the SL system can perceive and avoid the time slots included in the time domain resource set.
  • the first SCI indicates a second time domain resource set of a first side reference signal
  • the second SCI indicates a third time domain resource set of a second side reference signal.
  • the interval between two adjacent time slots in the time slots included in the union of the second time domain resource set and the third time domain resource set is the same.
  • the union of the second time domain resource set and the third time domain resource set can be understood as the above-mentioned first time domain resource set.
  • the second SCI includes period indication information, and the period indication information is used to indicate the period T.
  • the periodic time slot is indicated by the periodic indication information for transmitting the sidelink reference signal to implement the beam training of the SL system on the FR2 frequency band.
  • the periodic time slot is indicated by the periodic indication information, so that other terminals in the SL system can avoid the periodic time slot after sensing it.
  • the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
  • the first SCI indicates time domain resource information of the first sidelink reference signal
  • the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer from 1 to Q.
  • the second time domain resource set of the first sidelink reference signal includes time slot n and time slot n+ tq .
  • n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1.
  • Q is greater than 1
  • the interval between two adjacent time slots in the set consisting of time slot n, time slot n+ tq , and time slot n+k*T is the same.
  • Q is equal to 1
  • the interval between two adjacent time slots in the set consisting of time slot n, time slot n+ tq , and time slot n+k*T is the same.
  • a resource indication method is provided.
  • the method can be implemented by a first terminal, or by a chip/chip system.
  • the first terminal receives a PSCCH from a second terminal.
  • the PSCCH carries the SCI, and the SCI is used to indicate the time-frequency resources of the PSSCH.
  • a side reference signal and a PSSCH are received from the second terminal.
  • the PSSCH only carries the MAC CE, and the side reference signal is used for beam training.
  • the PSCCH, PSSCH and the side reference signal are sent in the same time slot.
  • the SCI indicates a time domain resource set of a sidelink reference signal, and the intervals between two adjacent time slots in the time domain resource set are the same.
  • the SCI includes period indication information, and the period indication information is used to indicate the period T.
  • the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
  • SCI indicates time domain resource information of a sidelink reference signal
  • the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer ranging from 1 to Q.
  • the time domain resource set of the sidelink reference signal includes time slot n and time slot n+ tq .
  • n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1.
  • the qth time slot offset tq among the Q time slot offsets is q times the 1st time slot offset t1 among the Q time slot offsets.
  • the time slot offset tq ' indicated by the SCI sent in time slot n+ t1 is the same as the time slot offset tq .
  • a resource indication method is provided.
  • the method can be implemented by a first terminal, or by a chip/chip system.
  • the first terminal receives a first PSCCH from a second terminal.
  • the first PSCCH carries a first SCI, and the first SCI is used to indicate the time-frequency resources of the first PSSCH.
  • a first sideline reference signal and a first PSSCH are received from the second terminal, the first sideline reference signal is used for beam training, and the first PSSCH only carries a first MAC CE.
  • the first PSCCH, the first PSSCH and the first sideline reference signal are sent in the same time slot.
  • the first terminal receives a second PSCCH from the second terminal.
  • the second PSCCH carries a second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH.
  • the first terminal receives a second sideline reference signal and a second PSSCH from the second terminal, the second sideline reference signal is used for beam training, and the second PSSCH carries a second MAC CE and a MAC PDU.
  • the second PSCCH, the second PSSCH and the second sideline reference signal are sent in the same time slot.
  • the first SCI and the second SCI indicate a first time domain resource set of the first sideline reference signal and the second sideline reference signal, and intervals between two adjacent time slots in the time slots included in the first time domain resource set are the same.
  • the first SCI indicates a second time domain resource set of the first sideline reference signal
  • the second SCI indicates a third time domain resource set of the second sideline reference signal.
  • the interval between two adjacent time slots in the time slots included in the union of the second time domain resource set and the third time domain resource set is the same.
  • the second SCI includes period indication information, and the period indication information is used to indicate the period T.
  • the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
  • the first SCI indicates the time domain resource information of the first sidelink reference signal
  • the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer ranging from 1 to Q.
  • the second time domain resource set of the first sidelink reference signal includes time slot n and time slot n+ tq .
  • n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1.
  • Q is greater than 1, in the set consisting of time slot n, time slot n+ tq, and time slot n+k*T
  • the interval between two adjacent time slots is the same.
  • Q is equal to 1 in the set consisting of time slot n, time slot n+ tq , and time slot n+k*T, the interval between two adjacent time slots is the same.
  • a communication device comprising: a processing unit and a transceiver unit.
  • the processing unit is used to generate SCI.
  • the transceiver unit is used to send PSCCH to the first terminal.
  • PSCCH carries SCI
  • SCI is used to indicate PSSCH time-frequency resources.
  • the transceiver unit is also used to send a sidelink reference signal and PSSCH to the first terminal.
  • PSSCH only carries MAC CE.
  • the sidelink reference signal is used for beam training. PSCCH, PSSCH and sidelink reference signal are sent in the same time slot.
  • the processing unit is further configured to select a time domain resource set for a sidelink reference signal, wherein intervals between two adjacent time slots in the time domain resource set are the same.
  • the SCI indicates a time domain resource set of a sidelink reference signal, and the intervals between two adjacent time slots in the time domain resource set are the same.
  • the SCI includes period indication information, and the period indication information is used to indicate the period T.
  • the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
  • SCI indicates time domain resource information of a sidelink reference signal
  • the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer ranging from 1 to Q.
  • the time domain resource set of the sidelink reference signal includes time slot n and time slot n+ tq .
  • n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1.
  • the qth time slot offset tq among the Q time slot offsets is q times the 1st time slot offset t1 among the Q time slot offsets.
  • the time slot offset tq ' indicated by the SCI sent in time slot n+ t1 is the same as the time slot offset tq .
  • a communication device comprising: a processing unit and a transceiver unit.
  • the processing unit is used to generate a first SCI and a second SCI.
  • the transceiver unit is used to send a first PSCCH to the first terminal.
  • the first PSCCH carries a first SCI
  • the first SCI is used to indicate the time-frequency resources of the first PSSCH.
  • the transceiver unit is also used to send a first sideline reference signal and a first PSSCH to the first terminal.
  • the first sideline reference signal is used for beam training, and the first PSSCH only carries a first MAC CE.
  • the first PSCCH, the first PSSCH and the first sideline reference signal are sent in the same time slot.
  • the transceiver unit is also used to send a second PSCCH to the first terminal.
  • the second PSCCH carries a second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH.
  • the transceiver unit is also used to send a second sideline reference signal and a second PSSCH to the first terminal.
  • the second sideline reference signal is used for beam training, and the second PSSCH carries a second MAC CE and a MAC PDU.
  • the second PSCCH, the second PSSCH and the second sideline reference signal are sent in the same time slot.
  • the processing unit is further configured to select a first time domain resource set for the first sidelink reference signal and the second sidelink reference signal, wherein intervals between two adjacent time slots in the time slots included in the first time domain resource set are the same.
  • the first SCI and the second SCI indicate a first time domain resource set of the first sideline reference signal and the second sideline reference signal, and intervals between two adjacent time slots in the time slots included in the first time domain resource set are the same.
  • the first SCI indicates a second time domain resource set of a first side reference signal
  • the second SCI indicates a third time domain resource set of a second side reference signal.
  • the interval between two adjacent time slots in the time slots included in the union of the second time domain resource set and the third time domain resource set is the same.
  • the union of the second time domain resource set and the third time domain resource set can be understood as the above-mentioned first time domain resource set.
  • the second SCI includes period indication information, and the period indication information is used to indicate the period T.
  • the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
  • the first SCI indicates the time domain resource information of the first sidelink reference signal
  • the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer ranging from 1 to Q.
  • the second time domain resource set of the first sidelink reference signal includes time slot n and time slot n+ tq .
  • n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1.
  • Q is greater than 1, in the set consisting of time slot n, time slot n+ tq, and time slot n+k*T
  • the interval between two adjacent time slots is the same.
  • Q is equal to 1 in the set consisting of time slot n, time slot n+ tq , and time slot n+k*T, the interval between two adjacent time slots is the same.
  • a communication device comprising: a processing unit and a transceiver unit.
  • the transceiver unit is used to receive the PSCCH from the second terminal.
  • the PSCCH carries the SCI, and the SCI is used to indicate the time-frequency resources of the PSSCH.
  • the transceiver unit is also used to receive the side reference signal and the PSSCH from the second terminal. Among them, the PSSCH only carries the MAC CE, and the side reference signal is used for beam training.
  • the PSCCH, PSSCH and the side reference signal are sent in the same time slot.
  • the processing unit is used to determine the time-frequency resources of the PSSCH.
  • the SCI indicates a time domain resource set of a sidelink reference signal, and the intervals between two adjacent time slots in the time domain resource set are the same.
  • the SCI includes period indication information, and the period indication information is used to indicate the period T.
  • the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
  • SCI indicates time domain resource information of a sidelink reference signal
  • the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer ranging from 1 to Q.
  • the time domain resource set of the sidelink reference signal includes time slot n and time slot n+ tq .
  • n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1.
  • the qth time slot offset tq among the Q time slot offsets is q times the 1st time slot offset t1 among the Q time slot offsets.
  • the time slot offset tq ' indicated by the SCI sent in time slot n+ t1 is the same as the time slot offset tq .
  • a communication device comprising: a processing unit and a transceiver unit.
  • the transceiver unit is used to receive a first PSCCH from a second terminal.
  • the first PSCCH carries a first SCI, and the first SCI is used to indicate the time-frequency resources of the first PSSCH.
  • the transceiver unit is also used to receive a first sideline reference signal and a first PSSCH from the second terminal.
  • the first sideline reference signal is used for beam training, and the first PSSCH only carries a first MAC CE.
  • the first PSCCH, the first PSSCH and the first sideline reference signal are sent in the same time slot.
  • the transceiver unit is also used to receive a second PSCCH from the second terminal.
  • the second PSCCH carries a second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH.
  • the transceiver unit is also used to receive a second sideline reference signal and a second PSSCH from the second terminal.
  • the second sideline reference signal is used for beam training, and the second PSSCH carries a second MAC CE and a MAC PDU.
  • the second PSCCH, the second PSSCH and the second sideline reference signal are sent in the same time slot.
  • the processing unit is used to determine the time-frequency resources of the first PSSCH and the time-frequency resources of the second PSSCH.
  • the first SCI and the second SCI indicate a first time domain resource set of the first sideline reference signal and the second sideline reference signal, and intervals between two adjacent time slots in the time slots included in the first time domain resource set are the same.
  • the first SCI indicates a second time domain resource set of the first sideline reference signal
  • the second SCI indicates a third time domain resource set of the second sideline reference signal.
  • the interval between two adjacent time slots in the time slots included in the union of the second time domain resource set and the third time domain resource set is the same.
  • the second SCI includes period indication information, and the period indication information is used to indicate the period T.
  • the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
  • the first SCI indicates the time domain resource information of the first sidelink reference signal
  • the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer ranging from 1 to Q.
  • the second time domain resource set of the first sidelink reference signal includes time slot n and time slot n+ tq .
  • n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1.
  • Q is greater than 1, in the set consisting of time slot n, time slot n+ tq, and time slot n+k*T
  • the interval between two adjacent time slots is the same.
  • Q is equal to 1 in the set consisting of time slot n, time slot n+ tq , and time slot n+k*T, the interval between two adjacent time slots is the same.
  • a communication device may be a communication device in any possible implementation of the fifth to eighth aspects of the above embodiments, or a chip set in a communication device in any aspect of the fifth to eighth aspects.
  • the communication device includes a communication interface and a processor, and optionally, also includes a memory.
  • the memory is used to store computer programs, instructions, or data.
  • the processor is coupled to the memory and the communication interface.
  • the communication device When the processor reads the computer program, instructions, or data, the communication device The method is configured to execute the method executed by the second terminal in any possible implementation manner of the first aspect above, or the communication device is configured to execute the method executed by the second terminal in any possible implementation manner of the second aspect above, or the communication device is configured to execute the method executed by the first terminal in any possible implementation manner of the third aspect above, or the communication device is configured to execute the method executed by the first terminal in any possible implementation manner of the fourth aspect above.
  • the communication interface can be implemented by an antenna, a feeder, a codec, etc. in the communication device, or, if the communication device is a chip provided in a network device or a terminal device, the communication interface can be an input/output interface of the chip, such as an input/output pin, etc.
  • the communication device may also include a transceiver for the communication device to communicate with other devices.
  • an embodiment of the present application provides a chip system, which includes a processor and may also include a memory, for implementing the method executed by the first terminal or the second terminal in any possible implementation of the first to fourth aspects.
  • the chip system also includes a memory for storing program instructions and/or data.
  • the chip system may be composed of a chip, or may include a chip and other discrete devices.
  • the present application provides a computer-readable storage medium storing a computer program or instructions, which, when executed, implements the method performed by the first terminal or the second terminal in the above aspects.
  • a computer program product comprising: computer program code or instructions, when the computer program code or instructions are executed, the method performed by the first terminal or the second terminal in the above aspects is executed.
  • a communication device in a thirteenth aspect, includes a unit or module for executing the above-mentioned methods.
  • a chip system comprising a logic circuit and an input/output interface.
  • the logic circuit is used to execute the method executed by the first terminal or the second terminal.
  • the input/output interface is used to communicate with other devices.
  • the beneficial effects of the third to fourteenth aspects and their implementations can refer to the description of the beneficial effects of the methods of the first and second aspects and their implementations.
  • FIG1A is a schematic diagram of a communication system provided in an embodiment of the present application.
  • FIG1B is a schematic diagram of another communication system provided in an embodiment of the present application.
  • FIG2 is a schematic diagram of a V2X scenario
  • FIG3 is a schematic diagram of a V2V scenario
  • FIG4 is a schematic diagram of a physical time slot and a logical time slot
  • FIG5 is a schematic diagram of a PSCCH resource location
  • FIG6 is a schematic diagram of a resource selection method
  • FIG7 is a schematic diagram of a time slot structure
  • FIG8 is a schematic diagram of a beam of a terminal provided in an embodiment of the present application.
  • FIG9 is a schematic diagram of a time slot structure provided in an embodiment of the present application.
  • FIG10 is an exemplary flow chart of a resource indication method provided in an embodiment of the present application.
  • FIG11 is a schematic diagram of a time slot of a side reference signal provided in an embodiment of the present application.
  • FIG12 is a schematic diagram of a time slot of another side reference signal provided in an embodiment of the present application.
  • FIG13 is a schematic diagram of a time slot of another side reference signal provided in an embodiment of the present application.
  • FIG14 is a schematic diagram of another time slot structure provided in an embodiment of the present application.
  • FIG15 is an exemplary flow chart of a resource indication method provided in an embodiment of the present application.
  • FIG16 is a schematic diagram of a time slot of another side reference signal provided in an embodiment of the present application.
  • FIG17 is an exemplary flow chart of a resource indication method provided in an embodiment of the present application.
  • FIG18 is a schematic diagram of a time slot of another side reference signal provided in an embodiment of the present application.
  • FIG19 is a schematic diagram of a communication device provided in an embodiment of the present application.
  • FIG20 is a schematic diagram of another communication device provided in an embodiment of the present application.
  • FIG21 is a schematic diagram of another communication device provided in an embodiment of the present application.
  • Figure 22 is a schematic diagram of another communication device provided in an embodiment of the present application.
  • the communication system may include a terminal device 101 and a terminal device 102.
  • the terminal device 101 and the terminal device 102 may communicate via a side link. It is understandable that the communication system may further include more terminal devices, which are not shown in FIG. 1A .
  • the communication system may further include a network device.
  • the communication system may include a network device 103 .
  • the network device 103 may communicate with the terminal device 101 , and the network device 103 may also communicate with the terminal device 102 .
  • the terminal device involved in the present application includes a device that provides voice and/or data signal connectivity to a user, specifically, includes a device that provides voice to a user, or includes a device that provides data signal connectivity to a user, or includes a device that provides voice and data signal connectivity to a user.
  • a device that provides voice and/or data signal connectivity to a user specifically, includes a device that provides voice to a user, or includes a device that provides data signal connectivity to a user, or includes a device that provides voice and data signal connectivity to a user.
  • it may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem.
  • the terminal device may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) terminal equipment, V2X terminal equipment, machine-to-machine/machine-type communications (M2M/MTC) terminal equipment, Internet of Things (IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal equipment, access terminal equipment, user terminal equipment, user agent, or user equipment, satellite, drone, balloon or aircraft, etc.
  • UE user equipment
  • D2D device-to-device
  • M2M/MTC machine-to-machine/machine-type communications
  • IoT Internet of Things
  • subscriber unit subscriber station
  • mobile station remote station
  • access point AP
  • remote terminal equipment access terminal equipment
  • user terminal equipment user agent
  • satellite drone, balloon or aircraft
  • it may include a mobile phone (or "cellular" phone), a computer with a mobile terminal device, a portable, pocket-sized, handheld, or computer-built-in mobile device, etc
  • PCS personal communication service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • the terminal device can also be a wearable device.
  • Wearable devices can also be called wearable smart devices or smart wearable devices, etc., which are the general term for wearable devices that are intelligently designed and developed for daily wear using wearable technology.
  • the various terminal devices introduced above, if located on a vehicle (for example, placed in a vehicle or installed in a vehicle), can be considered as vehicle-mounted terminal devices, and vehicle-mounted terminal devices are also called on-board units (OBU).
  • OEM on-board units
  • the network devices involved in the present application include, for example, access network (AN) devices, such as base stations (e.g., access points), which may refer to devices in the access network that communicate with wireless terminal devices through one or more cells at the air interface, or, for example, a network device in vehicle-to-everything (V2X) technology is a road side unit (RSU).
  • AN access network
  • base stations e.g., access points
  • V2X vehicle-to-everything
  • RSU road side unit
  • the network device may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (LTE) system or long term evolution-advanced (LTE-A), or may include an evolved packet core network (EPC), the 5th generation (5G), a next generation node B (gNB) in a new radio (NR) system (also referred to as an NR system), or may include a centralized unit (CU) and a distributed unit (DU) in a cloud radio access network (Cloud RAN) system, a satellite, a drone, a balloon or an airplane, etc., and the embodiments of the present application are not limited.
  • NodeB or eNB or e-NodeB, evolutional Node B in a long term evolution (LTE) system or long term evolution-advanced (LTE-A)
  • EPC evolved packet core network
  • 5G 5th generation
  • gNB next generation node B
  • NR new radio
  • Wireless communications have undergone a technological evolution from the first generation of analog communication systems to the new 5G NR systems.
  • beamforming based on multiple input multiple output (MIMO) is an important aspect.
  • Beamforming can be regarded as a spatial filtering process. Its technical principle is to limit the transmission or reception of signals to a certain angle range, thereby increasing gain and reducing interference.
  • Beamforming has already appeared in the second generation of mobile communication systems ( 2nd generation, 2G), when it was achieved by selecting different transmitting or receiving antennas.
  • the third generation of mobile communication systems ( 3rd generation, 3G) and later communication systems tend to use phased arrays to achieve beamforming.
  • BM beam management
  • Beam management is an important technology proposed by 5G NR for FR2, including two important functions: beam training and beam failure recovery.
  • Beam training includes transmit beam training and receive beam training, which can be divided into three steps. The operations of each step are summarized as follows:
  • the base station sends a reference signal (RS) based on a set of transmit beams.
  • RS reference signal
  • the transmit beam set may include one or more transmit beams.
  • One transmit beam may correspond to one transmit direction, and multiple different transmit beams may correspond to different transmit directions.
  • the terminal may receive the RS through the receive beam, measure and feedback the RS, and select the transmit beam of the base station and the receive beam of the terminal.
  • S2 Based on S1, the base station sends RS based on a smaller set of transmit beams.
  • a smaller transmit beam set may be a subset of the transmit beam set in S1, or may be a narrower beam set corresponding to the direction of one or more transmit beams included in the transmit beam set in S1.
  • the terminal may receive the RS through the receive beam, measure and provide feedback on the RS, and improve the transmit beam of the base station.
  • S3 The base station sends RS using one transmit beam.
  • One of the transmission beams in S3 may be the transmission beam of the base station improved by the terminal in S2.
  • the terminal receives RSs using different reception beams, measures and feeds back the RSs, and improves the reception beam of the terminal.
  • the beam training of 5G NR downlink can be carried out.
  • S1 and S2 are the processes of the base station to perform the transmission beam training.
  • RS can be a channel state information reference signal (CSI-RS).
  • the base station will configure several beam directions, each beam direction corresponds to a CSI-RS resource and the time-frequency resources that the terminal should use when providing feedback.
  • the base station periodically or non-periodically sends CSI-RS to each direction in turn in a scanning manner.
  • the terminal measures the received power (reference signal received power, RSRP) of the CSI-RS and obtains the channel state information reference signal resource indicator (CSI-RS resource indicator, CRI) of the CSI-RS. After obtaining the RSRP, the terminal selects one or several RSRPs and the corresponding CRI and feeds them back to the base station.
  • the base station uses the feedback information to determine the transmit beam to be used.
  • the uplink beam training also uses a similar process, but the reference signals used are different.
  • C-V2X is a V2X communication technology developed based on cellular systems. It utilizes and enhances current cellular network functions and elements to achieve low-latency and high-reliability communication between various nodes in the vehicle network.
  • V2X communication technology can include vehicle-to-vehicle communication (V2V), vehicle-to-pedestrian communication (V2P), vehicle-to-infrastructure communication (V2I), and vehicle-to-network communication (V2N).
  • V2V vehicle-to-vehicle communication
  • V2P vehicle-to-pedestrian communication
  • V2I vehicle-to-infrastructure communication
  • V2N vehicle-to-network communication
  • C-V2X evolves from LTE-V2X to NR-V2X.
  • V2X communication has great potential to reduce vehicle collision accidents, thereby reducing the corresponding number of casualties.
  • the advantages of V2X are not limited to improving safety.
  • Vehicles that can perform V2X communication can help better manage traffic, further promote green transportation and lower energy consumption.
  • Intelligent transportation system (ITS) is an application that combines V2X.
  • vehicle users vehicle UE, V-UE
  • V-UE vehicle users
  • V-UE vehicle UE
  • 5G NR V2X can support lower transmission latency, more reliable communication transmission, higher throughput, better user experience, and meet the needs of a wider range of application scenarios.
  • V2V is a special case of V2X, which focuses on SL communication between vehicles.
  • V2V communication vehicles on the road can obtain driving information, sensor information, etc. of other vehicles in real time, which plays an important role in enabling autonomous driving.
  • the head vehicle sends vehicle control information to the formation in a V2V manner to enable subsequent vehicles to achieve unmanned driving.
  • V2V For extended sensors, after a vehicle senses other vehicles, it informs other vehicles of this sensor information through V2V, solving the problem of inaccurate environmental perception caused by the limited sensor capabilities of the vehicle itself.
  • V2V communication technology can be extended to D2D communication in any system.
  • problems in V2V communication In order to promote the long-term development of V2V and V2X technologies, beam management in V2V SL is an important aspect that needs to be solved urgently.
  • the R16 standard defines two resource allocation modes for SL communication: mode 1 and mode 2.
  • mode 1 the base station allocates transmission resources to V2X through the Uu (UTRAN-to-UE) air interface, so the terminals in mode 1 must be within the network coverage.
  • the spectrum resources of SL can be shared with uplink communication resources.
  • mode 1 and mode 2 can be allocated to different resource pools or share resource pools. Resource pool sharing can improve resource utilization efficiency, but it is also easy to cause conflicts between mode 1 and mode 2. Therefore, the terminal in mode 1 will notify the terminal in mode 2 of the resources allocated for its future transmission.
  • the terminal can obtain SL resource pool configuration information and/or SL bandwidth part (BWP) configuration information by receiving the system information block (SIB) of the network device, cell-level (cell-specific) radio resource control (RRC) signaling or terminal user level (UE-specific) RRC signaling.
  • SIB system information block
  • RRC radio resource control
  • UE-specific terminal user level
  • the terminal may also use pre-configured SL resource pool configuration information or SL BWP configuration information.
  • the SL resource pool configuration information includes resource pool resource information, and the resource pool resource information is used to indicate the SL resource pool.
  • the resource pool is a collection of time-frequency resources used for sideline communication between terminals.
  • the resource pool may include code domain resources.
  • the resources of the resource pool are used to include resources for the terminal to send and receive at least one of the following physical channels:
  • the physical layer sidelink control channel (PSCCH) is used to carry sidelink control information (SCI).
  • SCI sidelink control information
  • the physical sidelink shared channel (PSSCH) is used to carry at least one of control information, data, and sidelink channel state information (CSI) feedback information.
  • PSSCH physical sidelink shared channel
  • CSI sidelink channel state information
  • PSDCH Physical layer sidelink control channel
  • the physical sidelink feedback channel is used for sidelink feedback information.
  • the sidelink feedback information can be used for feedback of data information, including hybrid automatic repeat request (HARQ) response feedback information.
  • HARQ hybrid automatic repeat request
  • acknowledgement (ACK) or negative acknowledgement (NACK) can also include CSI feedback information, and can also be used to indicate at least one of the following information, such as energy saving information, resource auxiliary information (including recommended resources, not recommended resources, resource collision, resource reservation conflict, half-duplex conflict that has occurred in the past or will occur in the future, etc.).
  • the physical sidelink broadcast channel (PSBCH) is used to carry information related to sidelink synchronization.
  • the service types carried by PSBCH may include unicast, multicast and/or broadcast communication types.
  • PSFCH, PSBCH, PSCCH and PSSCH are merely examples of side feedback channels, side discovery channels, side control channels and side data channels, respectively.
  • data channels and control channels may have different names, and the embodiments of the present application do not limit this.
  • time unit in the time domain of the SL resource pool, one or more time units are included, and the time unit may be one or more symbols, one or more time slots, one or more mini-slots, one or more subframes, one or more frames, etc.
  • One or more time units may be continuous in time or discrete. It should be understood that the time domain units in a resource pool are logically continuous.
  • time slots 1 to 8 are time slots that are continuous in time, and such time slots are called physical time slots.
  • the continuous time slots contained in the resource pool i.e., time slot 1’, 2’, 3’, and 4’
  • Such logically continuous but not necessarily temporally continuous time slots are called logical time slots.
  • a frequency domain unit can be a resource element (RE), several REs, a resource block (RB), several RBs, a sub-channel, and several sub-channels.
  • the size of a sub-channel that is, the number of RBs that a sub-channel includes one or more continuous or interlaced RBs in the frequency domain, can be integers of 10, 12, 15, 20, 25, 50, 75, and 100.
  • the SL resource pool configuration information may also include the configuration information of the PSCCH, and the configuration information of the PSCCH includes the number of symbols occupied by the PSCCH in a time slot and the number of RBs occupied by the PSCCH in a subchannel.
  • the SL BWP configuration information may include the SL resource pool information, which is used to configure the number of resource pools included in the BWP.
  • the SL BWP configuration information may include the SL bandwidth information, which is used to indicate the bandwidth size for SL communication, for example, indicating that the SL bandwidth is 20 megahertz (MHz).
  • the SL BWP configuration information may also include the SL symbol information, which is used to indicate the starting SL symbol position on a time slot and the number of continuous SL symbols occupied.
  • the SL BWP configuration information may also include the SL subcarrier spacing and cyclic prefix information, which are used to indicate the subcarrier spacing and cyclic prefix used for SL communication.
  • the cyclic prefix indicates an extended cyclic prefix or a normal cyclic prefix.
  • the SL BWP configuration information may also include the SL resource pool configuration information.
  • time unit is described as a time slot, but the time unit is not limited to being a time slot.
  • time unit is described as a subchannel, but the frequency domain unit is not limited to being a subchannel.
  • SCI in SL communication is divided into first-level SCI and second-level SCI.
  • PSCCH carries first-level SCI
  • first-level SCI is used to schedule second-level SCI and PSSCH. Since SL is a distributed system, all terminals need to correctly decode first-level SCI before decoding second-level SCI and PSSCH.
  • the resource position of PSCCH is relatively fixed, and the first-level SCI format information carried is also relatively unique, that is, the terminal does not need to blindly detect the time-frequency resource position where PSCCH is located, nor does it need to blindly detect SCI of different formats.
  • PSCCH may exist in each subchannel in each time slot, that is, the time domain starting position of a PSCCH is the second symbol for SL transmission in each time slot, the length is 2 or 3 symbols (determined by the resource pool configuration information), the frequency domain position is the smallest PRB index of each subchannel, the length is at least 10 PRBs (determined by the resource pool configuration information) but does not exceed the size of the subchannel, as shown in Figure 5.
  • the frequency resource assignment field and the time resource assignment field in the first-level SCI are used to indicate the frequency domain and time domain resources for transmitting PSSCH, respectively.
  • the resource reservation period field is used to indicate the resources for periodic reservation of PSSCH transmission.
  • the value of the resource reservation period field is configured by the network device, or preconfigured, or predefined.
  • the base station indicates the value of the resource reservation period through RRC signaling.
  • the RRC signaling can be determined by the high-level parameter s1 resource reservation period 1 (sl-resourceteserveperiod1).
  • the transmission resources of the transmitter of mode 2 resource selection method do not depend on the base station.
  • the transmitter selects the transmission resources for communication within the resource selection window according to the results of its own perception window. Assuming that the transmitter triggers resource selection in time slot n, the specific resource steps are as follows, and the selection process is shown in Figure 6.
  • Step 1 Determine the candidate resources R x,y in units of one time slot and L subCH consecutive subchannels, and the resource selection window [n+T 1 ,n+T 2 ], where Determined by Table 1, ⁇ SL is the configured subcarrier spacing, and T 1 is selected based on implementation.
  • T 2min is configured by the higher layer, if T 2min is less than the remaining PDB (data packet delay), then T 2min ⁇ T 2 ⁇ PDB (data packet delay), and T 2 is selected based on implementation; otherwise T 2 is equal to the remaining PDB.
  • Step 2 Determine the perception window Where T 0 is configured by high-level parameters. Determined from Table 2.
  • Step 3 Determine the threshold value Th( pi , pj ) of the reference signal received power RSRP.
  • the RSRP threshold value is related to the prio TX of the data to be sent and the priority prio RX indicated by the received SCI.
  • Th( pi , pj ) is specifically the prio RX +(prio TX -1)*8th threshold value in the RSRP threshold value set configured in the resource pool.
  • Step 4 Initialize the available resource set S A , including all time-frequency resources in the resource selection window.
  • Step 5 Exclude the following time-frequency resources from SA : the time slots of all periodic resource reservations configured in the resource pool corresponding to the unperceived time slots (transmitted time slots) in the perception window.
  • step 5 if the time-frequency resources excluded by SA are less than X% of the total resources in the resource selection window, re-execute the initialization of step 4.
  • Step 6 Continue to exclude the following time-frequency resources from SA : the decoding of the received first-level SCI is successful, and the result of RSRP measurement of the PSSCH demodulation reference signal (DMRS) of the time-frequency resources reserved by the received first-level SCI is higher than the RSRP threshold determined in step 3, and the time-frequency resources reserved by the received first-level SCI are within the resource selection window, including the retransmission resources indicated by the first-level SCI and the periodically reserved resources.
  • DMRS PSSCH demodulation reference signal
  • Step 7 If the remaining resources in SA are less than X% of the total resources in the resource selection window, where the value of X% is configured by the resource pool and is related to prio TX , then the RSRP threshold determined in step 3 is increased by 3 dB each time until the remaining resources in SA are not less than X% of the total resources in the resource selection window, and step 4 is continued.
  • a time-frequency resource (r 0 , r 1 , r 2 , ...) is randomly selected in SA for sending data. Before sending, a resource re-evaluation is performed on (r 0 , r 1 , r 2 , ). After the re-evaluation, a preemption detection is performed on the resource (r′ 0 , r′ 1 , r′ 2 , ...) selected from SA .
  • the user is in at least time slot
  • the UE can perform resource re-evaluation and preemption detection based on the additional triggering before and after the time slot m-T3.
  • the method of determining whether (r 0 , r 1 , r 2 , ...) and (r′ 0 , r′ 1 , r′ 2 , ...) need to be excluded is the same as step 7, and one of the following conditions is met:
  • the s1 preemption enable ('sl-PreemptionEnable') parameter is not configured to be enabled, and prio pre > prio RX and prio TX > prio pre are satisfied.
  • prio pre is configured by the higher layer.
  • time slot m is the next time slot to be sent, i.e., time slot m belongs to (r 0 ,r 1 ,r 2 ,...) and (r′ 0 ,r′ 1 ,r′ 2 ,).
  • the base station sends CSI-RS.
  • the UE measures and evaluates the wireless channel through the received RS and reports the measurement results to the network.
  • the network can set appropriate transmission parameters for subsequent downlink transmissions based on these measurement results.
  • the CSI-RS of the NR Uu port supports up to 32 different antenna ports, and each antenna port is a channel that needs to be detected. In terms of time-frequency resource occupancy, a single-port CSI-RS occupies only one resource unit RE in a resource block in the frequency domain and a time slot in the time domain.
  • the multiplexing method can be code domain multiplexing, frequency domain multiplexing, and time domain multiplexing.
  • CSI-RS can be configured for periodic transmission, semi-continuous transmission, or non-periodic transmission, and supports unicast, multicast, and broadcast transmission.
  • the SL CSI-RS of the first frequency range (frequency range 1, FR1) is designed based on the CSI-RS of the R15Uu port.
  • the SL CSI-RS configuration is selected by the transmitter and provided to the receiver through the PC5-RRC configuration.
  • the SL CSI-RS configuration includes the resource mapping mode and the number of antenna ports of the SL CSI-RS.
  • the resource mapping of the SL CSI-RS in the PRB is based on the CSI-RS resource mapping mode in NR Uu, which supports up to 2 antenna ports (such as SL in NR V2X can support up to two streams in PSSCH), and the frequency domain density is 1, that is, one CSI-RS is configured on each resource block RB.
  • Figure 7 shows the time slot structure of SL, which includes automatic gain control (AGC), PSCCH, PSSCH, DMRS, GAP (guard period), etc.
  • SL CSI-RS only supports unicast transmission and is sent with data in the PSSCH area of the transmit time slot. At the same time, it is not transmitted on symbols containing PSCCH, second-level SCI or PSSCH DMRS.
  • Each PRB in PSSCH uses the same pattern for SL CSI-RS.
  • the number of symbols occupied by each information in the time slot structure shown in Figure 7 is only shown as an example.
  • the number of symbols occupied by AGC, PSCCH, PSSCH and GAP can be determined by the second terminal, configured by the network device, pre-configured or pre-defined by the protocol, and this application does not make any specific limitations.
  • the transmission time and frequency resources of SL CSI-RS are mainly indicated by the first-level SCI.
  • SCI in NR V2X is transmitted in two levels.
  • the introduction of the second-level SCI makes the SCI design more flexible, supporting unicast, multicast and broadcast transmission in NR V2X, while LTE V2X only supports broadcast.
  • the main advantages of two-level SCI are:
  • the first-level SCI has a fixed size that is independent of the transmission type, avoiding blind detection by the receiving end user;
  • the first level SCI is carried in the PSCCH at a known possible position within the subchannel
  • the first-level SCI indicates the resources of the second-level SCI carried in the PSSCH;
  • a second level SCI with different payload sizes depending on the transmission type reduces the complexity of SCI decoding, not only for the transmitter, but also for the perception terminal that only needs to detect and decode the first level SCI to know which resources are reserved by the receiver.
  • the first-level SCI in NR V2X is carried on the PSCCH and the second-level SCI is carried on the corresponding PSSCH.
  • the PSCCH carries the first-level SCI containing the second-level SCI control information associated with the PSSCH.
  • the first-level SCI indicates the frequency resources of the PSSCH carrying the current (re)transmission of the transport block (TB) and the resources reserved for up to two retransmissions of the TB. If the UE reserves resources for semi-static PSSCH, the first-level SCI also indicates the resource reservation period.
  • the first-level SCI includes the priority of the associated PSSCH, and the format and size of the second-level SCI.
  • the first-level SCI also indicates the modulation and coding scheme (MCS) of the data payload carried in the associated PSSCH.
  • MCS modulation and coding scheme
  • the DMRS associated with the PSSCH in NR V2X can be carried on different symbols within the PSSCH time slot.
  • the PSSCH DMRS can be (pre)configured with multiple time patterns, and the first-level SCI indicates the specific time pattern used by the associated PSSCH.
  • the first level SCI also provides the number of ports for the PSSCH DMRS, which can be equal to one or two, which represents the number of layers (i.e., the number of data streams) supported in the PSSCH. Therefore, by utilizing multiple transmit and receive antennas, up to two data streams can be sent in the PSSCH in the NR V2X SL.
  • the SCI is divided into two levels, allowing other terminals that are not transmitting receiving terminals to decode only the first level SCI for channel sensing, that is, for determining the resources reserved by other transmissions.
  • the second level SCI provides additional control information required by the receiving terminal that needs to transmit.
  • the PSSCH carries the second level SCI and a data payload consisting of TBs.
  • the second level SCI carries information used to decode the PSSCH and support HARQ feedback and CSI reporting, indicating the layer 1 source identity (identifier, ID) and destination ID of the transmission, representing the physical layer identifier of the transmitter and the intended recipient (receiver) of the TB.
  • the layer 1 source ID is used to allow the receiving end to know the identity of the transmitter and then determine the PSFCH of the HARQ feedback.
  • the second level SCI also carries a 1-bit new data indicator to specify whether the TB sent in the PSSCH corresponds to a new data transmission or a retransmission.
  • the HARQ process ID is also included in the second level SCI to identify the TB.
  • the second level SCI also Indicates whether HARQ feedback for PSSCH is enabled or disabled.
  • the FR1SL CSI-RS workflow is as follows:
  • the transmitter sends the CSI request and SL CSI-RS in the first-level SCI, triggering the receiver of the unicast link to feedback the CSI report.
  • the transmitter can configure the receiver's non-periodic CSI reporting.
  • the transmitter first sends the SCI, which contains the user ID of the SL CSI-RS, the SL CSI-RS transmission information, including the time-frequency resource information, resource ID, scrambling code ID, etc. of the SL CSI-RS.
  • the SCI can also include a time offset to instruct the receiver to send CSI feedback information in a specific subframe or time slot.
  • the receiver measures the CSI based on the SL CSI-RS sent by the transmitter, and feeds back the CSI through the PSSCH sent by the receiver to the transmitter.
  • the CSI feedback of the receiver is carried in the MAC CE.
  • the receiver In order to avoid CSI timeout, the receiver is expected to feed back the CSI report within the maximum time.
  • the delay limit is determined by the transmitter and sent to the receiver through PC5-RRC signaling.
  • SL distributed system of the FR2 millimeter wave frequency band beam misalignment may occur between the transmitter and the receiver due to sudden channel fluctuations, unexpected obstacle interruptions, terminal rotation, etc.
  • beam training based on SL CSI-RS is considered to achieve beam alignment between the transmitter and the receiver.
  • the SL CSI-RS in FR1 is unicasted with the data in the PSSCH. Since it is limited by the transmission of the accompanying service data itself, it cannot be independently sent periodically or non-periodically to achieve beam training and calibration. Even if the data is periodic data, the service data period and the SL CSI-RS transmission period are not the same concept. Therefore, there is currently only non-periodic SL CSI-RS with the channel, which poses a challenge to the beam training based on SL CSI-RS in FR2 millimeter wave communication.
  • the beam management of the NR Uu interface is based on the extremely flexible CSI-RS framework and the powerful MIMO capability of the base station.
  • the reference signal corresponding to CSI-RS is SL CSI-RS.
  • SL CSI-RS is a reference signal proprietary to SL. Its basic function is to measure the channel of SL to calculate the rank indicator (RI) and channel quality indicator (CQI) of the channel, and to help the transmitter determine the parameters such as the transmission mode, MCS and code rate.
  • the SL CSI-RS on the FR2 band can also realize other functions, such as serving as a reference signal for beam training in SL.
  • the terminal-to-terminal (UE-to-UE) beam management in SL should be appropriately changed, especially the transmission beam training process needs to be carried out efficiently. This puts forward new requirements for the transmission method of the SL CSI-RS of the terminal on the FR2 band.
  • Beam management is an important technology proposed by 5G NR for FR2 beamforming. It is the process by which base stations and terminals obtain and maintain beam sets for sending and receiving, and then achieve high-gain communication with reasonable beam pairs.
  • the current FR2 beam management process is designed for base stations and terminals, that is, the base station first performs coarse beam scanning and the terminal receives.
  • both the transmitter and the receiver are terminals, and the beam management process in 5G NR is no longer applicable, and there is no standard support for related technical solutions.
  • the method provided in the embodiment of the present application can be applied to the scenario of beam training on the FR2 frequency band in a V2X distributed system.
  • the scenario of beam scanning at the transmitting end in the distributed system is shown in FIG8 .
  • the important elements in the scenario are explained as follows:
  • Transmitter UE The information sending entity in V2X SL, taking vehicle UE as an example in the figure.
  • Receiving UE The information receiving entity in V2X SL, taking the vehicle UE as an example in the figure.
  • Transmit beam refers to the directional radiation pattern of the transmitting UE on a certain antenna port. The figure shows the transmit beams in four directions. Each beam radiates periodically for beam training to achieve beam alignment with the receiving UE.
  • each terminal in the SL system is in a peer-to-peer relationship and there is no unified coordination and scheduling by the base station, whether the terminal receives or sends cannot be determined in the distributed system.
  • UE-to-UE beam management lacks reference signals for beam training.
  • the SL CSI-RS in FR1 must be unicasted with the data in the PSSCH. Since it is limited by the transmission of the accompanying service data itself, it cannot be independently sent periodically or non-periodically to achieve beam training and calibration. Furthermore, even if the data is periodic data, the service period and the SL CSI-RS transmission period are not the same concept. Therefore, there is currently only an accompanying non-periodic reference signal SL CSI-RS, which makes it impossible to perform beam training based on SL CSI-RS on the FR2 frequency band.
  • an embodiment of the present application provides a resource indication method.
  • the second terminal can send PSCCH to the first terminal.
  • the PSCCH can carry SCI, and the SCI can be used to indicate the time-frequency resources of PSSCH.
  • the second terminal can send a side reference signal and PSSCH to the first terminal.
  • the PSSCH can only carry MAC CE.
  • PSCCH, PSSCH and side reference signal are sent in the same time slot. Based on this method, considering the separate structure of the side reference signal and the PSSCH accompanying data, the time slot structure of only MAC CE and side reference signal is filled in PSSCH, as shown in Figure 9.
  • the above-mentioned time slot structure can be used for transmission beam training based on SL CSI-RS on the FR2 frequency band, which ensures the stripping of the side reference signal and the accompanying data in the PSSCH, while avoiding the transmission of a separate (standalone) side reference signal, while ensuring the integrity and consistency with the existing SL time slot structure.
  • the PSSCH may also only carry the MAC CE and the second-level SCI; the SCI carried in the PSCCH is used to indicate the time-frequency resources of the PSSCH; the second-level SCI carried by the PSSCH is used to indicate the decoding of the PSSCH.
  • the specific content carried by the PSSCH may be different, and the embodiments of the present application do not limit this.
  • an exemplary flow chart of a resource indication method may include the following operations.
  • the first terminal may be the terminal device 101 shown in Fig. 1A
  • the second terminal may be the terminal device 102 shown in Fig. 1A.
  • the second terminal sends a PSCCH to the first terminal.
  • the first terminal receives the PSCCH from the second terminal.
  • the above-mentioned PSCCH can carry SCI, such as the first-level SCI.
  • the SCI can be used to indicate the time-frequency resources of the PSSCH.
  • the SCI can also indicate the time-frequency resource information of the second-level SCI.
  • the second terminal has at most one activated BWP on one carrier, and the first terminal and the second terminal use the same BWP.
  • the second terminal may indicate the frequency domain resources of the PSSCH through the frequency domain resource indication (frequency resource assignment) field in the SCI.
  • the second terminal may indicate the time domain resources of the PSSCH through the time domain resource indication (time resource assignment) field and the resource reservation period (reservation period) field in the SCI.
  • the second terminal sends a sidelink reference signal and a PSSCH to the first terminal.
  • the second terminal receives the sidelink reference signal and the PSSCH from the first terminal.
  • PSSCH may only carry MAC CE.
  • the side reference signal may be a side reference signal such as SL CSI-RS or DMRS.
  • the PSCCH and PSSCH sent by the second terminal to the first terminal may be as shown in FIG9.
  • AGC, PSCCH, PSSCH and the side reference signal are sent in the same time slot.
  • the GAP shown in FIG9 may be a GAP between two transmission time slots. Based on the time slot structure shown in FIG9, only MAC CE and the side reference signal may be filled in the PSSCH, which ensures that the side reference signal and the accompanying data in the PSSCH are stripped while avoiding the transmission of the standalone side reference signal.
  • the embodiment shown in FIG. 10 may further include the following operation S1000 .
  • the second terminal selects the time domain resource set of SL CSI-RS.
  • the time domain resource set may include multiple time slots, and the interval between two adjacent time slots is the same. It should be noted that two adjacent time slots may refer to two logically continuous time slots. It should be noted that when the second terminal selects the time domain resource set in S1000, it can be implemented with reference to the embodiment shown in Figure 6, which will not be repeated here.
  • the above-mentioned SCI can also be used to indicate the time-frequency resources of the side reference signal.
  • the SCI indicates the time domain resource set of the side reference signal.
  • the time domain resource set can be the time domain resource set selected by the second terminal in S1000.
  • the side reference signal is SL CSI RS as an example for explanation.
  • the parameter value N rsv_period of the resource reservation period field in the SCI is used to indicate the period of the service data carried by the PSSCH.
  • the threshold value defaults to 0.
  • N rsv_period when selecting resources for the time slot where the SL CSI-RS is located, it can be designed to use N rsv_period to indicate the period of the SL CSI-RS, as shown in Figure 11.
  • N rsv_period is used to indicate the period of the transmission time slot where the SL CSI-RS is located.
  • the second terminal sends PSCCH in time slot n
  • the PSCCH can carry SCI.
  • the SCI can indicate the period of PSSCH or the period N rsv_period of SL CSI-RS.
  • the second terminal sends PSSCH and SL CSI-RS in time slot n.
  • the resource selection method indicated by the N rsv_period field in the SCI ensures the periodic transmission of the time slot where the SL CSI-RS is located, which is then used for the beam training process of the terminal.
  • N rsv_period in the above text can be configured by the network device, configured by the first terminal to the second terminal, or determined by the second terminal itself, and this application does not make any specific limitation.
  • Case 2 SCI indicates time domain resource information, and the time domain resource information includes Q time slot offsets t q .
  • the parameter value TRIV of the time resource assignment field in the SCI may indicate Q time slot offsets tq .
  • the Q may be an integer greater than or equal to 1, such as 2, 3 or even a larger value. An integer from 1 to Q.
  • the time slots of the SL CSI-RS indicated by the time domain resource information include time slot n and time slot n+t q . It should be understood that n may be the index of the transmission time slot in which the PSCCH is transmitted.
  • the qth time slot offset tq among the Q time slot offsets is q times the 1st time slot offset t1 among the Q time slot offsets.
  • Q can indicate 2 time slot offsets, which are t1 and t2 .
  • the design condition constraints t1 and t2 indicate the above selected time domain resource set to achieve periodic transmission of the time slot where the SL CSI-RS is located.
  • t2 2* t1 .
  • PSCCH can carry SCI
  • the second terminal sends SL CSI-RS in time slots n+t 1 and n+t 2 , that is, the transmission time slots n+t 1 and n+t 2 in the SL resource pool are reserved in time slot n.
  • the intervals between two adjacent time slots indicated by SCI are the same.
  • chain reservation of time slots can be realized in this example.
  • the second terminal can send PSCCH, PSSCH and SL CSI-RS.
  • PSSCH can carry SCI
  • the SCI can indicate 1 time slot offset t' 1 .
  • the second terminal reserves the transmission time slot n+t 1 +t′ 1 in the SL resource pool, and so on.
  • t′ 1 may be the same as t 1 .
  • the number of time slot offsets indicated by the SCI in FIG12 is only shown as an example. In fact, the number of time slot offsets indicated by each SCI may be the same or different. In the time slot set of the SL CSI-RS formed by the value of the time slot offset indicated by each SCI, the interval between two adjacent time slots is the same.
  • the time slot offset tq ' indicated by the SCI sent in time slot n+ t1 is the same as the time slot offset tq .
  • the PSCCH can carry SCI
  • the SCI can indicate 1 time slot offset t1
  • the second terminal has SL CSI-RS transmission in time slot n+ t1 , that is, the transmission time slot n+ t1 in the SL resource pool is reserved in time slot n.
  • chain reservation of time slots can be realized.
  • the second terminal can send PSCCH, PSSCH and SL CSI-RS in time slot n+ t1 .
  • the PSSCH can carry SCI
  • the second terminal can carry only MAC CE on the PSSCH to realize the separation of SL CSI-RS and business data, and can select a time domain resource set evenly distributed in the time domain to send the SL CSI-RS, and indicate the time domain resource set through SCI, thereby realizing uniform and periodic resource selection of the time slot where the SL CSI-RS is located. Therefore, the second terminal can send SL CSI-RS to the first terminal through the time domain resource set for beam training, such as the first terminal and the second terminal performing beam training.
  • the embodiment of the present application also provides another time slot structure.
  • PSSCH carries SL CSI-RS and MAC CE
  • it also carries MAC PDU.
  • MAC PDU can carry SL discovery message.
  • the SL discovery message can be used to discover other terminals, such as a first terminal discovering a second terminal.
  • PSSCH can also carry MAC CE, MAC PDU and second-level SCI, the SCI carried in PSCCH is used to indicate the time-frequency resources of PSSCH, and the second-level SCI carried by PSSCH is used to indicate the decoding of PSSCH.
  • the specific content carried by PSSCH may be different, and the embodiments of the present application do not limit this.
  • the embodiment of the present application also provides another resource indication method.
  • FIG. 15 is an exemplary flow chart of a resource indication method provided in the embodiment of the present application, the method may include the following operations.
  • the second terminal sends a PSCCH to the first terminal.
  • the first terminal receives the PSCCH from the second terminal.
  • the above-mentioned PSCCH can carry SCI, such as the first-level SCI.
  • the SCI can be used to indicate the time-frequency resources of the PSSCH, or the time-frequency resources of the SL CSI-RS.
  • the SCI can also indicate the time-frequency resources of the second-level SCI.
  • the second terminal has at most one activated BWP on one carrier, and the second terminal uses the same BWP as the first terminal.
  • the second terminal may indicate the frequency domain resources of the PSSCH through the frequency domain resource indication (frequency resource assignment) field in the SCI.
  • the second terminal may indicate the time domain resources of the PSSCH through the time domain resource indication (time resource assignment) field and the resource reservation period (reservation period) field in the SCI.
  • the second terminal sends SL CSI-RS and PSSCH to the first terminal.
  • the second terminal receives the sidelink reference signal and the PSSCH from the first terminal.
  • PSCCH can carry MAC PDU and MAC CE.
  • PSCCH and PSSCH sent by the second terminal to the first terminal can be as shown in FIG14.
  • AGC, PSCCH and PSSCH and side reference signal can be sent in the same time slot.
  • the GAP shown in FIG14 can be a GAP between two transmission time slots.
  • the embodiment shown in FIG. 14 may further include the following operation S1500.
  • the second terminal selects the time domain resource set of SL CSI-RS.
  • the time domain resource set may include multiple time slots, and the interval between two adjacent time slots is the same. It should be noted that two adjacent time slots may refer to two logically continuous time slots. It should be noted that when the second terminal selects the time domain resource set in S1500, it can be implemented with reference to the embodiment shown in Figure 6, which will not be repeated here.
  • the SCI may also be used to indicate the time-frequency resources of the side reference signal.
  • the SCI indicates a time domain resource set of the side reference signal.
  • the time domain resource set may be a time domain resource set selected by the second terminal in S1500. It is understood that the manner in which the SCI indicates the time-frequency resources of the side reference signal may be implemented with reference to the aforementioned situation 1.
  • the time slot occupied by the MAC PDU can be indicated based on the parameter value N rsv_period of the resource reservation period field in the SCI to implement periodic time domain resource reservation for the PSSCH.
  • the second terminal sends PSCCH, PSSCH and SL CSI-RS in time slot n
  • the periodic time slot resources in the SL resource pool are reserved, so that other terminals in the distributed SL system can avoid these reserved resources after sensing, ensuring the periodic service data while realizing the periodic transmission of the time slot where the SL CSI-RS is located, which is then used for the beam training process of the terminal.
  • a resource indication method is also provided in the embodiment of the present application, in which the second terminal can send the time slot structure shown in Figure 9 and Figure 14.
  • a resource indication method provided in the embodiment of the present application can include the following operations.
  • the second terminal sends a first PSCCH to the first terminal.
  • the first terminal receives the first PSCCH from the second terminal.
  • the first PSCCH may carry a first SCI.
  • the first SCI may indicate the time-frequency resources of the first PSSCH.
  • the first SCI may be a first level SCI.
  • the second terminal sends the first PSSCH and the first SL CSI-RS to the first terminal.
  • the first PSSCH can only carry MAC CE, as shown in Figure 9.
  • the first SL CSI-RS, the first PSSCH and the first PSCCH are sent in the same time slot.
  • the second terminal sends a second PSCCH to the first terminal.
  • the first terminal receives the second PSCCH from the second terminal.
  • the second PSCCH may carry a second SCI.
  • the second SCI may indicate the time-frequency resources of the second PSSCH.
  • the second SCI may be a first-level SCI.
  • the second terminal sends the second PSSCH and the second SL CSI-RS to the first terminal.
  • the first terminal receives the second PSSCH and the second SL CSI-RS from the second terminal.
  • the second PSSCH can carry MAC CE and MAC PDU, as shown in Figure 14.
  • the second SL CSI-RS, the second PSSCH and the second PSCCH are sent in the same time slot.
  • the first SL CSI-RS and the second SL CSI-RS can be used for the terminal to perform beam training.
  • the second terminal Before sending the first SL CSI-RS and the second SL CSI-RS, the second terminal can select a first time domain resource set of the first SL CSI-RS and the second SL CSI-RS.
  • the embodiment shown in FIG. 17 may further include the following operation S1700.
  • S1700 The second terminal selects the first time domain resource set of SL CSI-RS.
  • the first time domain resource set may include multiple time slots, and the interval between two adjacent time slots is the same. It should be noted that two adjacent time slots may refer to two logically continuous time slots. It should be noted that when the second terminal selects the time domain resource set in S1700, it can be implemented with reference to the embodiment shown in Figure 6, which will not be repeated here.
  • the time slots included in the first time domain resource set selected in S1700 can be used to send the first SL CSI-RS and the second SL CSI-RS.
  • the first SCI and the second SCI may indicate the first time domain resource set selected above.
  • the first SCI may indicate the second time domain resource set of the first SL CSI-RS
  • the second SCI may indicate the third time domain resource set of the second SL CSI-RS.
  • the set consisting of the second time domain resource set of the first SL CSI-RS and the third time domain resource set of the second SL CSI-RS may include multiple time slots.
  • the union of the second time domain resource set and the third time domain resource set, that is, the time slots included in the first time domain resource set, has the same interval between two adjacent time slots.
  • the first SCI may indicate the second time domain resource set of the first SL CSI-RS.
  • the first SCI may indicate Q time domain resource offsets t q .
  • the time slots included in the second time domain resource set of the first SL CSI-RS may include time slot n and time slot n+t q . Where n is the index of the transmission time slot for sending the first PSCCH.
  • the set consisting of the time slot n and time slot n+ tq of the first SL CSI-RS and the time slot n+k* Nrsv_period of the second SL CSI-RS may include multiple time slots, and the interval between two adjacent time slots in the multiple time slots is the same. This is described below with reference to FIG.
  • the second terminal sends PSCCH on time slot n, and the PSCCH can carry SCI.
  • the SCI can indicate the period of PSSCH or the period of SL CSI-RS N rsv_period .
  • the second terminal sends PSSCH and SL CSI-RS on time slot n, and the PSSCH carries MAC PDU and MAC CE.
  • the second terminal sends PSCCH on time slot n+t 1 , and the PSCCH can carry SCI.
  • the SCI can indicate two time slot offsets, t 1 and t 2 , respectively.
  • the second terminal has transmissions of SL CSI-RS on time slots n+t 1 and n+t 2. It can be seen from FIG. 18 that whether PSSCH carries MAC PDU does not affect the selection of the time slot of SL CSI-RS.
  • the second terminal sends PSCCH in time slot n+t 2 , and the PSCCH can carry SCI, and the SCI can indicate a time slot offset t 1. It can be understood that the t 1 can be the same as or different from the t 1 indicated by the SCI sent in time slot n+t 1.
  • the second terminal can indicate the sending time slot resources of PSSCH or the time slot resources of SL CSI-RS through SCI, or indicate Q time slot offsets through SCI, which can achieve uniform time slots of the selected SL CSI-RS to better perform the beam scanning process.
  • the time slot of SL CSI-RS through SCI other terminals in the distributed SL system can avoid these reserved resources after sensing, ensuring the transmission of MAC PDU while realizing the resource selection of the time slot where SL CSI-RS is located, which is used for the beam training process of the first terminal.
  • time slot structures sent in different time slots may be different, the time slots contained in the time domain resource set selected and indicated by the second terminal are evenly distributed, which can better perform the beam scanning process.
  • the second terminal in the embodiment of the present application can indicate the time slot of the SL CSI-RS.
  • the second terminal can send the SL CSI-RS through the selected time slot of the SL CSI-RS, allowing the first terminal to perform beam training based on the SL CSI-RS.
  • the process of beam training can refer to the beam training process of the aforementioned base station and terminal, which will not be repeated here.
  • FIG 19 is a schematic block diagram of a communication device 1900 provided in an embodiment of the present application.
  • the communication device 1900 can correspond to the functions or steps implemented by the first network device or the second network device in the above-mentioned various method embodiments.
  • the communication device may include a processing unit 1910 and a transceiver unit 1920.
  • a storage unit may also be included, which can be used to store instructions (codes or programs) and/or data.
  • the processing unit 1910 and the transceiver unit 1920 can be coupled to the storage unit.
  • the processing unit 1910 can read the instructions (codes or programs) and/or data in the storage unit to implement the corresponding method.
  • the above-mentioned units can be set independently or partially or fully integrated.
  • the communication device 1900 can correspond to the implementation of the behavior and function of the second terminal in the above method embodiment.
  • the communication device 1900 can be a second terminal, or a component (such as a chip or circuit) applied to the second terminal.
  • the transceiver unit 1920 can be used to perform all receiving or sending operations performed by the second terminal in the embodiment shown in Figure 10.
  • S1000 in the embodiment shown in Figure 10, and/or other processes for supporting the technology described herein.
  • the processing unit 1910 is used to generate SCI.
  • the transceiver unit 1920 is used to send PSCCH to the first terminal.
  • PSCCH carries SCI
  • SCI is used to indicate PSSCH time-frequency resources.
  • the transceiver unit 1920 is also used to send a sidelink reference signal and PSSCH to the first terminal.
  • PSSCH only carries MAC CE.
  • the sidelink reference signal is used for beam training. PSCCH, PSSCH and sidelink reference signal are sent in the same time slot.
  • the communication device 1900 can correspond to the implementation of the behavior and function of the second terminal in the above method embodiment.
  • the communication device 1900 can be a second terminal, or a component (such as a chip or circuit) applied to the second terminal.
  • the transceiver unit 1920 can be used to perform all receiving or sending operations performed by the second terminal in the embodiment shown in Figure 15.
  • S1501 in the embodiment shown in Figure 15, and/or other processes for supporting the technology described herein; wherein the processing unit 1910 is used to perform all operations except the transceiver operation performed by the second terminal in the embodiment shown in Figure 15.
  • S1500 in the embodiment shown in Figure 15, and/or other processes for supporting the technology described herein.
  • the processing unit 1910 is used to generate SCI.
  • the transceiver unit 1920 is used to send PSCCH to the first terminal.
  • PSCCH carries SCI
  • SCI is used to indicate PSSCH time-frequency resources.
  • the transceiver unit 1920 is also used to send a sidelink reference signal and PSSCH to the first terminal.
  • PSSCH carries MAC CE and MAC PDU.
  • the sidelink reference signal is used for beam training. PSCCH, PSSCH and sidelink reference signal are sent in the same time slot.
  • the communication device 1900 can correspond to the behavior and function of the second terminal in the above method embodiment.
  • the communication device 1900 can be a second terminal, or a component (such as a chip or circuit) applied to the second terminal.
  • the transceiver unit 1920 can be used to perform all receiving or sending operations performed by the second terminal in the embodiment shown in Figure 17.
  • the processing unit 1910 is used to generate a first SCI and a second SCI.
  • the transceiver unit 1920 is used to send a first PSCCH to the first terminal.
  • the first PSCCH carries the first SCI
  • the first SCI is used to indicate the time-frequency resources of the first PSSCH.
  • the transceiver unit 1920 is also used to send a first sideline reference signal and a first PSSCH to the first terminal.
  • the first sideline reference signal is used for beam training, and the first PSSCH only carries the first MAC CE.
  • the first PSCCH, the first PSSCH and the first sideline reference signal are sent in the same time slot.
  • the transceiver unit 1920 is also used to send a second PSCCH to the first terminal.
  • the second PSCCH carries the second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH.
  • the transceiver unit 1920 is also used to send a second sideline reference signal and a second PSSCH to the first terminal.
  • the second sideline reference signal is used for beam training, and the second PSSCH carries the second MAC CE and MAC PDU.
  • the second PSCCH, the second PSSCH and the second sideline reference signal are sent in the same time slot.
  • the communication device 1900 can implement the behaviors and functions of the first terminal in the above method embodiments.
  • the communication device 1900 can be the first terminal, or a component (such as a chip or circuit) used in the first terminal.
  • the processing unit 1920 may be used to perform all receiving or sending operations performed by the first terminal in the embodiment shown in FIG10.
  • the transceiver unit 1920 is used to receive the PSCCH from the second terminal.
  • the PSCCH carries the SCI, and the SCI is used to indicate the time-frequency resources of the PSSCH.
  • the transceiver unit 1920 is also used to receive the side reference signal and the PSSCH from the second terminal.
  • the PSSCH only carries the MAC CE, and the side reference signal is used for beam training.
  • the PSCCH, PSSCH and the side reference signal are sent in the same time slot.
  • the processing unit 1910 is used to determine the time-frequency resources of the PSSCH.
  • the communication device 1900 can correspond to the implementation of the behavior and function of the first terminal in the above-mentioned method embodiment.
  • the communication device 1900 can be a first terminal, or a component (such as a chip or circuit) applied to the first terminal.
  • the transceiver unit 1920 can be used to perform all receiving or sending operations performed by the first terminal in the embodiment shown in Figure 15.
  • the transceiver unit 1920 is used to receive the PSCCH from the second terminal.
  • the PSCCH carries the SCI, and the SCI is used to indicate the time-frequency resources of the PSSCH.
  • the transceiver unit 1920 is also used to receive the side reference signal and the PSSCH from the second terminal.
  • the PSSCH carries the MAC CE and the MAC PDU, and the side reference signal is used for beam training.
  • the PSCCH, PSSCH and the side reference signal are sent in the same time slot.
  • the processing unit 1910 is used to determine the time-frequency resources of the PSSCH.
  • the communication device 1900 can correspond to the implementation of the behavior and function of the first terminal in the above method embodiment.
  • the communication device 1900 can be a first terminal, or a component (such as a chip or circuit) applied to the first terminal.
  • the transceiver unit 1920 can be used to perform all receiving or sending operations performed by the first terminal in the embodiment shown in Figure 17.
  • the transceiver unit 1920 is used to receive a first PSCCH from a second terminal.
  • the first PSCCH carries a first SCI
  • the first SCI is used to indicate the time-frequency resources of the first PSSCH.
  • the transceiver unit 1920 is also used to receive a first sideline reference signal and a first PSSCH from a second terminal.
  • the first sideline reference signal is used for beam training, and the first PSSCH only carries a first MAC CE.
  • the first PSCCH, the first PSSCH, and the first sideline reference signal are sent in the same time slot.
  • the transceiver unit 1920 is also used to receive a second PSCCH from a second terminal.
  • the second PSCCH carries a second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH.
  • the transceiver unit 1920 is also used to receive a second sideline reference signal and a second PSSCH from a second terminal.
  • the second sideline reference signal is used for beam training, and the second PSSCH carries a second MAC CE and a MAC PDU.
  • the second PSCCH, the second PSSCH, and the second sideline reference signal are sent in the same time slot.
  • the processing unit 1910 is configured to determine the time-frequency resources of the first PSSCH and the time-frequency resources of the second PSSCH.
  • processing unit 1910 in the embodiment of the present application can be implemented by a processor or a processor-related circuit component
  • transceiver unit 1920 can be implemented by a transceiver or a transceiver-related circuit component or a communication interface.
  • an embodiment of the present application provides a communication device 2000.
  • the communication device 2000 includes a processor 2010.
  • the communication device 2000 may also include a memory 2020 for storing instructions executed by the processor 2010 or storing input data required by the processor 2010 to run the instructions or storing data generated after the processor 2010 runs the instructions.
  • the processor 2010 may implement the method shown in the above method embodiment through the instructions stored in the memory 2020.
  • the embodiment of the present application provides a communication device 2100, which can be a chip or a chip system.
  • the chip system can be composed of chips, or can include chips and other discrete devices.
  • the communication device 2100 may include at least one processor 2110, and the processor 2110 is coupled to a memory.
  • the memory may be located inside the device or outside the device.
  • the communication device 2100 may also include at least one memory 2120.
  • the memory 2120 stores necessary computer programs, configuration information, computer programs or instructions and/or data for implementing any of the above embodiments; the processor 2110 may execute the computer program stored in the memory 2120 to complete the method in any of the above embodiments.
  • the coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 2110 may operate in conjunction with the memory 2120.
  • the specific connection medium between the transceiver 2130 , the processor 2110 , and the memory 2120 is not limited in this embodiment.
  • the communication device 2100 may also include a transceiver 2130, and the communication device 2100 may exchange information with other devices through the transceiver 2130.
  • the transceiver 2130 may be a circuit, a bus, a transceiver or any other device that can be used for information exchange, or may be referred to as a signal transceiver unit. As shown in FIG21 , the transceiver 2130 includes a transmitter 2131, a receiver 2132 and an antenna 2133.
  • the transceiver in the communication device 2100 may also be an input-output circuit and/or a communication interface, which may input data (or receive data) and output data (or send data), and the processor may be an integrated processor or a microprocessor or an integrated circuit, and the processor may determine output data based on input data.
  • the communication device 2100 may be applied to a second terminal, and the specific communication device 2100 may be a second terminal, or may be a device capable of supporting the second terminal to implement the function of the second terminal in any of the above-mentioned embodiments.
  • the memory 2120 stores the necessary computer programs, computer programs or instructions and/or data for implementing the function of the second terminal in any of the above-mentioned embodiments.
  • the processor 2110 may execute the computer program stored in the memory 2120 to complete the method executed by the second terminal in any of the above-mentioned embodiments.
  • the communication device 2100 may be applied to a first terminal, and the specific communication device 2100 may be a first terminal, or may be a device capable of supporting the first terminal to implement the functions of the first terminal in any of the above-mentioned embodiments.
  • the memory 2120 stores necessary computer programs, computer programs or instructions and/or data for implementing the functions of the first terminal in any of the above-mentioned embodiments.
  • the processor 2110 may execute the computer program stored in the memory 2120 to complete the method executed by the first terminal in any of the above-mentioned embodiments.
  • the communication device 2100 provided in this embodiment can be applied to the second terminal to complete the method executed by the second terminal, or can be applied to the first terminal to complete the method executed by the first terminal, the technical effects that can be obtained can refer to the above method embodiments, which will not be repeated here.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application.
  • the general-purpose processor may be a microprocessor or any conventional processor, etc.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.
  • the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as a random-access memory (RAM).
  • the memory may also be any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.
  • the memory in the embodiments of the present application may also be a circuit or any other device that can implement a storage function, for storing computer programs, computer programs or instructions and/or data.
  • the embodiments of the present application also provide another communication device 2200, including: an input-output interface 2210 and a logic circuit 2220; the input-output interface 2210 is used to receive code instructions and transmit them to the logic circuit 2220; the logic circuit 2220 is used to run code instructions to execute the method executed by the second terminal or the first terminal in any of the above embodiments.
  • the following describes in detail the operations performed by the communication device when applied to the second terminal or the first terminal.
  • the communication device 2200 may be applied to a second terminal to execute the method executed by the second terminal, for example, the method executed by the second terminal in the embodiment shown in FIG. 10 .
  • the logic circuit 2220 is used to generate SCI.
  • the input-output interface 2210 is used to output PSCCH to the first terminal.
  • PSCCH carries SCI
  • SCI is used to indicate PSSCH time-frequency resources.
  • the input-output interface 2210 is also used to output the side reference signal and PSSCH to the first terminal.
  • PSSCH only carries MAC CE.
  • the side reference signal is used for beam training. PSCCH, PSSCH and side reference signal are sent in the same time slot.
  • the communication device 2200 may be applied to a second terminal to execute the method executed by the second terminal, for example, the method executed by the second terminal in the embodiment shown in FIG. 15 .
  • the logic circuit 2220 is used to generate SCI.
  • the input-output interface 2210 is used to output PSCCH to the first terminal.
  • PSCCH carries SCI
  • SCI is used to indicate PSSCH time-frequency resources.
  • the input-output interface 2210 is also used to output a sidelink reference signal and PSSCH to the first terminal.
  • PSSCH carries MAC CE and MAC PDU.
  • the sidelink reference signal is used for beam training. PSCCH, PSSCH and sidelink reference signal are sent in the same time slot.
  • the communication device 2200 may be applied to a second terminal to execute the method executed by the second terminal, for example, the method executed by the second terminal in the embodiment shown in FIG. 17 .
  • the logic circuit 2220 is used to generate the first SCI and the second SCI.
  • the input-output interface 2210 is used to output the first PSCCH to the first terminal.
  • the first PSCCH carries the first SCI
  • the first SCI is used to indicate the time-frequency resources of the first PSSCH.
  • the input-output interface 2210 is used to output the first PSCCH to the first terminal. It is also used to output the first side reference signal and the first PSSCH to the first terminal.
  • the first side reference signal is used for beam training, and the first PSSCH only carries the first MAC CE.
  • the first PSCCH, the first PSSCH and the first side reference signal are sent in the same time slot.
  • the input-output interface 2210 is also used to output the second PSCCH to the first terminal.
  • the second PSCCH carries the second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH.
  • the input-output interface 2210 is also used to output the second side reference signal and the second PSSCH to the first terminal.
  • the second side reference signal is used for beam training, and the second PSSCH carries the second MAC CE and MAC PDU.
  • the second PSCCH, the second PSSCH and the second side reference signal are sent in the same time slot.
  • the communication device 2200 provided in this embodiment can be applied to the second terminal to complete the method executed by the second terminal, the technical effects that can be obtained can refer to the above method embodiment and will not be repeated here.
  • the communication device 2200 may be applied to a first terminal to execute the method executed by the first terminal, for example, the method executed by the first terminal in the embodiment shown in FIG. 10 .
  • the input-output interface 2210 is used to input the PSCCH from the second terminal.
  • the PSCCH carries the SCI, and the SCI is used to indicate the time-frequency resources of the PSSCH.
  • the input-output interface 2210 is also used to input the side reference signal and the PSSCH from the second terminal. Among them, the PSSCH only carries the MAC CE, and the side reference signal is used for beam training. The PSCCH, PSSCH and the side reference signal are sent in the same time slot.
  • the logic circuit 2220 is used to determine the time-frequency resources of the PSSCH.
  • the communication device 2200 may be applied to a first terminal to execute the method executed by the first terminal, for example, the method executed by the first terminal in the embodiment shown in FIG. 15 .
  • the input-output interface 2210 is used to input the PSCCH from the second terminal.
  • the PSCCH carries the SCI, which is used to indicate the time-frequency resources of the PSSCH.
  • the input-output interface 2210 is also used to input the side reference signal and PSSCH from the second terminal.
  • the PSSCH carries the MAC CE and MAC PDU, and the side reference signal is used for beam training.
  • the PSCCH, PSSCH and the side reference signal are sent in the same time slot.
  • the logic circuit 2220 is used to determine the time-frequency resources of the PSSCH.
  • the communication device 2200 may be applied to a first terminal to execute the method executed by the first terminal, for example, the method executed by the first terminal in the embodiment shown in FIG. 17 .
  • the input-output interface 2210 is used to input the first PSCCH from the second terminal.
  • the first PSCCH carries the first SCI, and the first SCI is used to indicate the time-frequency resources of the first PSSCH.
  • the input-output interface 2210 is also used to input the first sideline reference signal and the first PSSCH from the second terminal.
  • the first sideline reference signal is used for beam training, and the first PSSCH only carries the first MAC CE.
  • the first PSCCH, the first PSSCH and the first sideline reference signal are sent in the same time slot.
  • the input-output interface 2210 is also used to input the second PSCCH from the second terminal.
  • the second PSCCH carries the second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH.
  • the input-output interface 2210 is also used to input the second sideline reference signal and the second PSSCH from the second terminal.
  • the second sideline reference signal is used for beam training, and the second PSSCH carries the second MAC CE and MAC PDU.
  • the second PSCCH, the second PSSCH and the second sideline reference signal are sent in the same time slot.
  • the logic circuit 2220 is used to determine the time-frequency resources of the first PSSCH and the time-frequency resources of the second PSSCH.
  • the communication device 2200 provided in this embodiment can be applied to the first terminal to complete the method executed by the first terminal, the technical effects that can be obtained can refer to the above method embodiments, which will not be described in detail here.
  • the embodiments of the present application further provide a communication system.
  • the communication system includes at least one communication device applied to the second terminal and at least one communication device applied to the first terminal.
  • the embodiments of the present application further provide a computer-readable storage medium, which stores a computer program or instruction.
  • the computer-readable storage medium may include: a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk, and other media that can store program codes.
  • the embodiment of the present application further provides a chip, including a processor, for supporting the communication device to realize the functions involved in the second terminal or the first terminal in the above method embodiment.
  • the chip is connected to a memory or the chip includes a memory, and the memory is used to store computer programs or instructions and data necessary for the communication device.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.
  • a computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the present application is a flowchart and/or block diagram of a method, device (system), and computer program product according to an embodiment of the present application. It should be understood that each process and/or box in the flowchart and/or block diagram, as well as the combination of the processes and/or boxes in the flowchart and/or block diagram, can be implemented by a computer program or instruction. These computer programs or instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate a device for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.
  • These computer programs or instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B according to A does not mean determining B only according to A, and B can also be determined according to A and/or other information.
  • the terminal device and/or the network device can perform some or all of the steps in the embodiment of the present application, and these steps or operations are only examples. In the embodiment of the present application, other operations or variations of various operations can also be performed. In addition, each step can be performed in a different order presented in the embodiment of the present application, and it is possible not to perform all the operations in the embodiment of the present application.

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Abstract

The present application relates to the technical field of wireless communications, and provides a resource indication method and apparatus, for use in indicating a time-frequency resource for transmitting a sidelink reference signal. In the method, a second terminal sends a PSCCH to a first terminal, the PSCCH carrying an SCI used for indicating a time-frequency resource of a PSSCH. The second terminal sends a sidelink reference signal and the PSSCH to the first terminal, wherein the PSSCH only carries an MAC CE. In the above, the sidelink reference signal is used for beam training. The PSCCH, the PSSCH, and the sidelink reference signal are sent in the same timeslot. The described solution can be used for transmission beam training on the basis of the sidelink reference signal in the FR2 frequency band, which ensures the stripping of a sidelink reference signal and channel associated data in a PSSCH, and avoids the transmission of a standalone sidelink reference signal.

Description

一种资源指示方法和装置A resource indication method and device
相关申请的交叉引用CROSS-REFERENCE TO RELATED APPLICATIONS
本申请要求在2022年11月04日提交中国专利局、申请号为202211380083.2、申请名称为“一种资源指示方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application filed with the China Patent Office on November 4, 2022, with application number 202211380083.2 and application name “A Resource Indication Method and Device”, all contents of which are incorporated by reference in this application.
技术领域Technical Field
本申请涉及无线通信技术领域，尤其涉及一种资源指示方法和装置。The present application relates to the field of wireless communication technology, and in particular to a resource indication method and device.
背景技术Background technique
蜂窝车辆与万物通信(cellular vehicle-to-everything，C-V2X)是基于蜂窝***开发的V2X通信技术。它利用和增强了当前的蜂窝网络功能和元素，以实现车辆网络中各种节点之间的低延迟和高可靠性通信。Cellular vehicle-to-everything (C-V2X) is a V2X communication technology developed based on cellular systems. It utilizes and enhances current cellular network functions and elements to achieve low-latency and high-reliability communications between various nodes in the vehicle network.
波束管理是第五代无线通信***(5th generation，5G)新无线电(new radio，NR)针对第二频率范围(frequency range 2，FR2)提出的重要技术，基站和终端获取并维护用于发送和接收的波束集合的过程，进而以合理的波束对实现高增益的通信。Beam management is an important technology proposed by the fifth generation wireless communication system ( 5th generation, 5G) new radio (new radio, NR) for the second frequency range (frequency range 2, FR2). It is the process by which base stations and terminals obtain and maintain beam sets for sending and receiving, and then achieve high-gain communication with reasonable beam pairs.
目前FR2的波束管理流程是针对基站与终端设计的，即先由基站进行粗波束扫描，终端进行接收。然而，对于完全分布式的侧行链路(sidelink，SL)模式2(mode 2)的通信***，如V2X等场景中，发送端和接收端均为终端，5G NR中的波束管理流程不再适用，相关技术方案尚无标准支撑。At present, the beam management process of FR2 is designed for base stations and terminals, that is, the base station first performs coarse beam scanning and the terminal receives. However, for fully distributed sidelink (SL) mode 2 communication systems, such as V2X and other scenarios, both the transmitter and the receiver are terminals, and the beam management process in 5G NR is no longer applicable, and there is no standard support for related technical solutions.
发明内容Summary of the invention
本申请提供一种资源指示方法和装置，用来指示在SL***中传输侧行参考信号的时频资源。The present application provides a resource indication method and apparatus for indicating time-frequency resources for transmitting a sidelink reference signal in a SL system.
第一方面，提供一种资源指示方法。该方法可以由第二终端实施，或者芯片/芯片***实施。该方法中，第二终端向第一终端发送侧行链路控制信道(physical sidelink control channel，PSCCH)。PSCCH承载侧行链路控制信息(sidelink control information，SCI)，SCI用于指示侧行链路共享信道(physical sidelink shared channel，PSSCH)的时频资源。第二终端向第一终端发送侧行参考信号和PSSCH。其中，PSSCH只承载媒体接入与控制(media access control，MAC)控制元素(control element，CE)。上文中，侧行参考信号用于波束训练。PSCCH，PSSCH和侧行参考信号在相同的时隙发送。In a first aspect, a resource indication method is provided. The method can be implemented by a second terminal, or by a chip/chip system. In the method, the second terminal sends a physical sidelink control channel (PSCCH) to the first terminal. PSCCH carries sidelink control information (SCI), which is used to indicate the time-frequency resources of a physical sidelink shared channel (PSSCH). The second terminal sends a sidelink reference signal and PSSCH to the first terminal. Among them, PSSCH only carries a media access control (MAC) control element (CE). In the above, the sidelink reference signal is used for beam training. PSCCH, PSSCH and sidelink reference signal are sent in the same time slot.
可选的，侧行参考信号包括侧行链路道状态控制信息参考信号(sidelink channel state information reference signal，SL CSI-RS)。Optionally, the sidelink reference signal includes a sidelink channel state control information reference signal (SL CSI-RS).
基于上述方案，考虑侧行参考信号和PSSCH随路数据的分离结构，在PSSCH中仅填充MAC CE和侧行参考信号的时隙结构。上述时隙结构，可用于FR2频段上基于侧行参考信号的发送波束训练，其保证了PSSCH中侧行参考信号和随路数据剥离的同时，避免了单独的(standalone)侧行参考信号的发送。Based on the above scheme, the separation structure of the side reference signal and the PSSCH associated data is considered, and only the time slot structure of the MAC CE and the side reference signal is filled in the PSSCH. The above time slot structure can be used for the transmission beam training based on the side reference signal in the FR2 frequency band, which ensures the separation of the side reference signal and the associated data in the PSSCH, while avoiding the transmission of a standalone side reference signal.
在一种可能的实现方式中，选择侧行参考信号的时域资源集合，时域资源集合包含的时隙中相邻的两个时隙之间的间隔相同。In a possible implementation manner, a time domain resource set of a sidelink reference signal is selected, and intervals between two adjacent time slots in the time domain resource set are the same.
基于上述方案，第二终端选择均匀分布的时域资源集合用来传输侧行参考信号，可以让侧行参考信号用于波束训练，以实现SL***在FR2频段上的波束训练。Based on the above scheme, the second terminal selects a uniformly distributed time domain resource set to transmit the sidelink reference signal, and the sidelink reference signal can be used for beam training to implement beam training of the SL system in the FR2 frequency band.
在一种可能的实现方式中，SCI指示侧行参考信号的时域资源集合，时域资源集合中相邻的两个时隙之间的间隔相同。In a possible implementation manner, the SCI indicates a time domain resource set of a sidelink reference signal, and the intervals between two adjacent time slots in the time domain resource set are the same.
基于上述方案，通过SCI指示侧行参考信号的时域资源集合，可以让第一终端接收在该时域资源集合上发送的侧行参考信号。不仅如此，通过SCI指示参考信号的时域资源集合，还可以让SL***中其他终端感知后对该时域资源集合包含的时隙资源进行避让。Based on the above scheme, by indicating the time domain resource set of the side reference signal through SCI, the first terminal can receive the side reference signal sent on the time domain resource set. In addition, by indicating the time domain resource set of the reference signal through SCI, other terminals in the SL system can perceive and avoid the time slot resources included in the time domain resource set.
在一种可能的实现方式中，SCI包括周期指示信息，周期指示信息用于指示周期T。侧行参考信号的时域资源集合包括时隙n+k*T，k＝0,1,2,3…。其中，n为PSCCH的发送时隙的索引。In a possible implementation, the SCI includes period indication information, and the period indication information is used to indicate the period T. The time domain resource set of the sidelink reference signal includes time slot n+k*T, k=0, 1, 2, 3, ... wherein n is the index of the transmission time slot of the PSCCH.
基于上述方案，通过周期指示信息指示周期性的时隙用于传输侧行参考信号，以实现SL***在FR2频段上的波束训练。不仅如此，通过周期指示信息指示周期性的时隙，还可以让SL***中其他终 端感知后对该周期性的时隙资源进行避让。Based on the above scheme, the periodic time slot is indicated by the periodic indication information for transmitting the sideline reference signal, so as to realize the beam training of the SL system in the FR2 frequency band. In addition, the periodic time slot indicated by the periodic indication information can also allow other terminals in the SL system to After sensing, the terminal avoids the periodic time slot resources.
在一种可能的实现方式中，T的取值为网络终端配置的、预配置的、第一终端配置给第二终端的或第二终端确定的。In a possible implementation manner, the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
在一种可能的实现方式中，SCI指示侧行参考信号的时域资源信息，时域资源信息包括Q个时隙偏移量tq，Q为大于或等于1的整数，q取遍1至Q的整数。侧行参考信号的时域资源集合包括时隙n和时隙n+tq。n为PSCCH的发送时隙的索引，tq大于或等于1。一种可能的情况中，在Q大于1的情况下，Q个时隙偏移量中的第q个时隙偏移量tq是Q个时隙偏移量中的第1个时隙偏移量t1的q倍。另一种可能的情况中，在Q等于1的情况下，在时隙n+t1发送的SCI指示的时隙偏移量tq’与时隙偏移量tq相同。In a possible implementation, SCI indicates time domain resource information of a sidelink reference signal, and the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer ranging from 1 to Q. The time domain resource set of the sidelink reference signal includes time slot n and time slot n+ tq . n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1. In a possible case, when Q is greater than 1, the qth time slot offset tq among the Q time slot offsets is q times the 1st time slot offset t1 among the Q time slot offsets. In another possible case, when Q is equal to 1, the time slot offset tq ' indicated by the SCI sent in time slot n+ t1 is the same as the time slot offset tq .
基于上述方案，通过SCI指示Q个时隙偏移量，可以实现侧行参考信号的时隙的链式预约，SL***中的其他终端感知后会在此预约资源上进行避让。Based on the above scheme, by indicating Q time slot offsets through SCI, chain reservation of time slots of sidelink reference signals can be realized, and other terminals in the SL system will avoid this reserved resource after sensing it.
第二方面，提供一种资源指示方法。该方法可以由第二终端实施，或者芯片/芯片***实施。该方法中，第二终端向第一终端发送第一PSCCH。其中，第一PSCCH承载第一SCI，第一SCI用于指示第一PSSCH的时频资源。第二终端向第一终端发送第一侧行参考信号和第一PSSCH。其中，第一侧行参考信号用于波束训练，第一PSSCH只承载第一MAC CE。第一PSCCH，第一PSSCH和第一侧行参考信号在相同的时隙发送。第二终端向第一终端发送第二PSCCH。其中，第二PSCCH承载第二SCI，第二SCI用于指示第二PSSCH的时频资源。第二终端向第一终端发送第二侧行参考信号和第二PSSCH。其中，第二侧行参考信号用于波束训练，第二PSSCH承载第二MAC CE和MAC协议数据单元(protocol data unit，PDU)。第二PSCCH、第二PSSCH和第二侧行参考信号在相同的时隙发送。In a second aspect, a resource indication method is provided. The method may be implemented by a second terminal, or by a chip/chip system. In the method, the second terminal sends a first PSCCH to the first terminal. The first PSCCH carries a first SCI, and the first SCI is used to indicate the time-frequency resources of the first PSSCH. The second terminal sends a first sideline reference signal and a first PSSCH to the first terminal. The first sideline reference signal is used for beam training, and the first PSSCH only carries the first MAC CE. The first PSCCH, the first PSSCH and the first sideline reference signal are sent in the same time slot. The second terminal sends a second PSCCH to the first terminal. The second PSCCH carries a second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH. The second terminal sends a second sideline reference signal and a second PSSCH to the first terminal. The second sideline reference signal is used for beam training, and the second PSSCH carries a second MAC CE and a MAC protocol data unit (PDU). The second PSCCH, the second PSSCH and the second sideline reference signal are sent in the same time slot.
基于上述方案，通过设计SL时隙结构发送内容的填充和SCI指示的信息的变化，支持FR2频段上SL***中侧行参考信号的资源选择，用于波束训练过程。同时，SCI可以提供侧行参考信号的资源信息，用于SL***中其他终端感知后排除SCI指示的资源，避免碰撞。Based on the above scheme, by designing the filling of the SL time slot structure and the change of the information indicated by SCI, the resource selection of the side reference signal in the SL system on the FR2 frequency band is supported for the beam training process. At the same time, SCI can provide resource information of the side reference signal, which is used for other terminals in the SL system to exclude the resources indicated by SCI after perception to avoid collision.
在一种可能的实现方式中，选择第一侧行参考信号和第二侧行参考信号的第一时域资源集合，第一时域资源集合包含的时隙中相邻的两个时隙之间的间隔相同。In a possible implementation manner, a first time domain resource set of the first sidelink reference signal and the second sidelink reference signal is selected, and intervals between two adjacent time slots in time slots included in the first time domain resource set are the same.
基于上述方案，第二终端选择均匀分布的时域资源集合用来传输侧行参考信号，可以让侧行参考信号用于波束训练，以实现SL***在FR2频段上的波束训练。Based on the above scheme, the second terminal selects a uniformly distributed time domain resource set to transmit the sidelink reference signal, and the sidelink reference signal can be used for beam training to implement beam training of the SL system in the FR2 frequency band.
在一种可能的实现方式中，第一SCI和第二SCI指示第一侧行参考信号和第二侧行参考信号的第一时域资源集合，第一时域资源集合包含的时隙中相邻的两个时隙之间的间隔相同。In a possible implementation, the first SCI and the second SCI indicate a first time domain resource set of the first sideline reference signal and the second sideline reference signal, and intervals between two adjacent time slots in the time slots included in the first time domain resource set are the same.
基于上述方案，通过SCI指示侧行参考信号的时域资源集合，可以让第一终端接收在该时域资源集合上发送的侧行参考信号。不仅如此，通过SCI指示参考信号的时域资源集合，还可以让SL***中其他终端感知后对该时域资源集合包含的时隙进行避让。Based on the above scheme, by indicating the time domain resource set of the side reference signal through SCI, the first terminal can receive the side reference signal sent on the time domain resource set. In addition, by indicating the time domain resource set of the reference signal through SCI, other terminals in the SL system can perceive and avoid the time slots included in the time domain resource set.
在一种可能的实现方式中，第一SCI指示第一侧行参考信号的第二时域资源集合，第二SCI指示第二侧行参考信号的第三时域资源集合。第二时域资源集合与第三时域资源集合组成的并集包含的时隙中相邻的两个时隙之间的间隔相同。可选的，第二时域资源集合与第三时域资源集合组成的并集可以理解为上述第一时域资源集合。In a possible implementation, the first SCI indicates a second time domain resource set of a first side reference signal, and the second SCI indicates a third time domain resource set of a second side reference signal. The interval between two adjacent time slots in the time slots included in the union of the second time domain resource set and the third time domain resource set is the same. Optionally, the union of the second time domain resource set and the third time domain resource set can be understood as the above-mentioned first time domain resource set.
在一种可能的实现方式中，第二SCI包括周期指示信息，周期指示信息用于指示周期T。第二侧行参考信号的第三时域资源集合包括时隙n+k*T，k＝0,1,2,3…。其中，n为第二PSCCH的发送时隙的索引。In a possible implementation, the second SCI includes period indication information, and the period indication information is used to indicate the period T. The third time domain resource set of the second sidelink reference signal includes time slot n+k*T, k=0, 1, 2, 3..., wherein n is the index of the transmission time slot of the second PSCCH.
基于上述方案，通过周期指示信息指示周期性的时隙用于传输侧行参考信号，以实现SL***在FR2频段上的波束训练。不仅如此，通过周期指示信息指示周期性的时隙，还可以让SL***中其他终端感知后对该周期性的时隙进行避让。Based on the above scheme, the periodic time slot is indicated by the periodic indication information for transmitting the sidelink reference signal to implement the beam training of the SL system on the FR2 frequency band. In addition, the periodic time slot is indicated by the periodic indication information, so that other terminals in the SL system can avoid the periodic time slot after sensing it.
在一种可能的实现方式中，T的取值为网络终端配置的、预配置的、第一终端配置给第二终端的或第二终端确定的。In a possible implementation manner, the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
在一种可能的实现方式中，第一SCI指示第一侧行参考信号的时域资源信息，时域资源信息包括Q个时隙偏移量tq，Q为大于或等于1的整数，q取遍1至Q的整数。第一侧行参考信号的第二时域资源集合包括时隙n和时隙n+tq。n为PSCCH的发送时隙的索引，tq大于或等于1。一种可能的情况中， 在Q大于1的情况下，时隙n和时隙n+tq以及时隙n+k*T组成的集合中，相邻的两个时隙之间的间隔相同。另一种可能的情况中，在Q等于1的情况下，时隙n和时隙n+tq以及时隙n+k*T组成的集合中，相邻的两个时隙之间的间隔相同。In a possible implementation, the first SCI indicates time domain resource information of the first sidelink reference signal, and the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer from 1 to Q. The second time domain resource set of the first sidelink reference signal includes time slot n and time slot n+ tq . n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1. In a possible case, When Q is greater than 1, the interval between two adjacent time slots in the set consisting of time slot n, time slot n+ tq , and time slot n+k*T is the same. In another possible case, when Q is equal to 1, the interval between two adjacent time slots in the set consisting of time slot n, time slot n+ tq , and time slot n+k*T is the same.
基于上述方案，通过SCI指示Q个时隙偏移量，可以实现侧行参考信号的时隙的链式预约，SL***中的其他终端感知后会在此预约资源上进行避让。Based on the above scheme, by indicating Q time slot offsets through SCI, chain reservation of time slots of sidelink reference signals can be realized, and other terminals in the SL system will avoid this reserved resource after sensing it.
第三方面，提供一种资源指示方法。该方法可以由第一终端实施，或者芯片/芯片***实施。该方法中，第一终端接收来自第二终端的PSCCH。PSCCH承载SCI，SCI用于指示PSSCH的时频资源。接收来自第二终端的侧行参考信号和PSSCH。其中，PSSCH只承载MAC CE，侧行参考信号用于波束训练。PSCCH，PSSCH和侧行参考信号在相同的时隙发送。In a third aspect, a resource indication method is provided. The method can be implemented by a first terminal, or by a chip/chip system. In the method, the first terminal receives a PSCCH from a second terminal. The PSCCH carries the SCI, and the SCI is used to indicate the time-frequency resources of the PSSCH. A side reference signal and a PSSCH are received from the second terminal. Among them, the PSSCH only carries the MAC CE, and the side reference signal is used for beam training. The PSCCH, PSSCH and the side reference signal are sent in the same time slot.
在一种可能的实现方式中，SCI指示侧行参考信号的时域资源集合，时域资源集合中相邻的两个时隙之间的间隔相同。In a possible implementation manner, the SCI indicates a time domain resource set of a sidelink reference signal, and the intervals between two adjacent time slots in the time domain resource set are the same.
在一种可能的实现方式中，SCI包括周期指示信息，周期指示信息用于指示周期T。侧行参考信号的时域资源集合包括n+k*T，k＝0,1,2,3…。其中，n为PSCCH的发送时隙的索引。In a possible implementation, the SCI includes period indication information, and the period indication information is used to indicate the period T. The time domain resource set of the sidelink reference signal includes n+k*T, k=0, 1, 2, 3, ... wherein n is the index of the transmission time slot of the PSCCH.
在一种可能的实现方式中，T的取值为网络终端配置的、预配置的、第一终端配置给第二终端的或第二终端确定的。In a possible implementation manner, the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
在一种可能的实现方式中，SCI指示侧行参考信号的时域资源信息，时域资源信息包括Q个时隙偏移量tq，Q为大于或等于1的整数，q取遍1至Q的整数。侧行参考信号的时域资源集合包括时隙n和时隙n+tq。n为PSCCH的发送时隙的索引，tq大于或等于1。一种可能的情况中，在Q大于1的情况下，Q个时隙偏移量中的第q个时隙偏移量tq是Q个时隙偏移量中的第1个时隙偏移量t1的q倍。另一种可能的情况中，在Q等于1的情况下，在时隙n+t1发送的SCI指示的时隙偏移量tq’与时隙偏移量tq相同。In a possible implementation, SCI indicates time domain resource information of a sidelink reference signal, and the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer ranging from 1 to Q. The time domain resource set of the sidelink reference signal includes time slot n and time slot n+ tq . n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1. In a possible case, when Q is greater than 1, the qth time slot offset tq among the Q time slot offsets is q times the 1st time slot offset t1 among the Q time slot offsets. In another possible case, when Q is equal to 1, the time slot offset tq ' indicated by the SCI sent in time slot n+ t1 is the same as the time slot offset tq .
第四方面，提供一种资源指示方法。该方法可以由第一终端实施，或者芯片/芯片***实施。该方法中，第一终端接收来自第二终端的第一PSCCH。其中，第一PSCCH承载第一SCI，第一SCI用于指示第一PSSCH的时频资源。接收来自第二终端的第一侧行参考信号和第一PSSCH，第一侧行参考信号用于波束训练，第一PSSCH只承载第一MAC CE。第一PSCCH，第一PSSCH和第一侧行参考信号在相同的时隙发送。第一终端接收来自第二终端的第二PSCCH。其中，第二PSCCH承载第二SCI，第二SCI用于指示第二PSSCH的时频资源。第一终端接收来自第二终端的第二侧行参考信号和第二PSSCH，第二侧行参考信号用于波束训练，第二PSSCH承载第二MAC CE和MAC PDU。第二PSCCH、第二PSSCH和第二侧行参考信号在相同的时隙发送。In a fourth aspect, a resource indication method is provided. The method can be implemented by a first terminal, or by a chip/chip system. In the method, the first terminal receives a first PSCCH from a second terminal. The first PSCCH carries a first SCI, and the first SCI is used to indicate the time-frequency resources of the first PSSCH. A first sideline reference signal and a first PSSCH are received from the second terminal, the first sideline reference signal is used for beam training, and the first PSSCH only carries a first MAC CE. The first PSCCH, the first PSSCH and the first sideline reference signal are sent in the same time slot. The first terminal receives a second PSCCH from the second terminal. The second PSCCH carries a second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH. The first terminal receives a second sideline reference signal and a second PSSCH from the second terminal, the second sideline reference signal is used for beam training, and the second PSSCH carries a second MAC CE and a MAC PDU. The second PSCCH, the second PSSCH and the second sideline reference signal are sent in the same time slot.
在一种可能的实现方式中，第一SCI和第二SCI指示第一侧行参考信号和第二侧行参考信号的第一时域资源集合，第一时域资源集合包含的时隙中相邻的两个时隙之间的间隔相同。In a possible implementation, the first SCI and the second SCI indicate a first time domain resource set of the first sideline reference signal and the second sideline reference signal, and intervals between two adjacent time slots in the time slots included in the first time domain resource set are the same.
在一种可能的实现方式中，第一SCI指示第一侧行参考信号的第二时域资源集合，第二SCI指示第二侧行参考信号的第三时域资源集合。第二时域资源集合与第三时域资源集合组成的并集包含的时隙中相邻的两个时隙之间的间隔相同。In a possible implementation, the first SCI indicates a second time domain resource set of the first sideline reference signal, and the second SCI indicates a third time domain resource set of the second sideline reference signal. The interval between two adjacent time slots in the time slots included in the union of the second time domain resource set and the third time domain resource set is the same.
在一种可能的实现方式中，第二SCI包括周期指示信息，周期指示信息用于指示周期T。第二侧行参考信号的第三时域资源集合包括时隙n+k*T，k＝0,1,2,3…。其中，n为第二PSCCH的时隙的索引。In a possible implementation, the second SCI includes period indication information, and the period indication information is used to indicate the period T. The third time domain resource set of the second sidelink reference signal includes time slot n+k*T, k=0, 1, 2, 3..., wherein n is the index of the time slot of the second PSCCH.
在一种可能的实现方式中，T的取值为网络终端配置的、预配置的、第一终端配置给第二终端的或第二终端确定的。In a possible implementation manner, the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
在一种可能的实现方式中，第一SCI指示第一侧行参考信号的时域资源信息，时域资源信息包括Q个时隙偏移量tq，Q为大于或等于1的整数，q取遍1至Q的整数。第一侧行参考信号的第二时域资源集合包括时隙n和时隙n+tq。n为PSCCH的发送时隙的索引，tq大于或等于1。一种可能的情况中，在Q大于1的情况下，时隙n和时隙n+tq以及时隙n+k*T组成的集合中，相邻的两个时隙之间的间隔相同。另一种可能的情况中，在Q等于1的情况下，时隙n和时隙n+tq以及时隙n+k*T组成的集合中，相邻的两个时隙之间的间隔相同。In a possible implementation, the first SCI indicates the time domain resource information of the first sidelink reference signal, and the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer ranging from 1 to Q. The second time domain resource set of the first sidelink reference signal includes time slot n and time slot n+ tq . n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1. In one possible case, when Q is greater than 1, in the set consisting of time slot n, time slot n+ tq, and time slot n+k*T, the interval between two adjacent time slots is the same. In another possible case, when Q is equal to 1, in the set consisting of time slot n, time slot n+ tq , and time slot n+k*T, the interval between two adjacent time slots is the same.
第五方面，提供一种通信装置，包括：处理单元和收发单元。 In a fifth aspect, a communication device is provided, comprising: a processing unit and a transceiver unit.
其中，处理单元，用于生成SCI。收发单元，用于向第一终端发送PSCCH。PSCCH承载SCI，SCI用于指示PSSCH时频资源。收发单元，还用于向第一终端发送侧行参考信号和PSSCH。其中，PSSCH只承载MAC CE。上文中，侧行参考信号用于波束训练。PSCCH，PSSCH和侧行参考信号在相同的时隙发送。The processing unit is used to generate SCI. The transceiver unit is used to send PSCCH to the first terminal. PSCCH carries SCI, and SCI is used to indicate PSSCH time-frequency resources. The transceiver unit is also used to send a sidelink reference signal and PSSCH to the first terminal. PSSCH only carries MAC CE. In the above, the sidelink reference signal is used for beam training. PSCCH, PSSCH and sidelink reference signal are sent in the same time slot.
在一种可能的实现方式中，处理单元，还用于选择侧行参考信号的时域资源集合，时域资源集合包含的时隙中相邻的两个时隙之间的间隔相同。In a possible implementation manner, the processing unit is further configured to select a time domain resource set for a sidelink reference signal, wherein intervals between two adjacent time slots in the time domain resource set are the same.
在一种可能的实现方式中，SCI指示侧行参考信号的时域资源集合，时域资源集合中相邻的两个时隙之间的间隔相同。In a possible implementation manner, the SCI indicates a time domain resource set of a sidelink reference signal, and the intervals between two adjacent time slots in the time domain resource set are the same.
在一种可能的实现方式中，SCI包括周期指示信息，周期指示信息用于指示周期T。侧行参考信号的时域资源集合包括时隙n+k*T，k＝0,1,2,3…。其中，n为PSCCH的发送时隙的索引。In a possible implementation, the SCI includes period indication information, and the period indication information is used to indicate the period T. The time domain resource set of the sidelink reference signal includes time slot n+k*T, k=0, 1, 2, 3, ... wherein n is the index of the transmission time slot of the PSCCH.
在一种可能的实现方式中，T的取值为网络终端配置的、预配置的、第一终端配置给第二终端的或第二终端确定的。In a possible implementation manner, the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
在一种可能的实现方式中，SCI指示侧行参考信号的时域资源信息，时域资源信息包括Q个时隙偏移量tq，Q为大于或等于1的整数，q取遍1至Q的整数。侧行参考信号的时域资源集合包括时隙n和时隙n+tq。n为PSCCH的发送时隙的索引，tq大于或等于1。一种可能的情况中，在Q大于1的情况下，Q个时隙偏移量中的第q个时隙偏移量tq是Q个时隙偏移量中的第1个时隙偏移量t1的q倍。另一种可能的情况中，在Q等于1的情况下，在时隙n+t1发送的SCI指示的时隙偏移量tq’与时隙偏移量tq相同。In a possible implementation, SCI indicates time domain resource information of a sidelink reference signal, and the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer ranging from 1 to Q. The time domain resource set of the sidelink reference signal includes time slot n and time slot n+ tq . n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1. In a possible case, when Q is greater than 1, the qth time slot offset tq among the Q time slot offsets is q times the 1st time slot offset t1 among the Q time slot offsets. In another possible case, when Q is equal to 1, the time slot offset tq ' indicated by the SCI sent in time slot n+ t1 is the same as the time slot offset tq .
第六方面，提供一种通信装置，包括：处理单元和收发单元。In a sixth aspect, a communication device is provided, comprising: a processing unit and a transceiver unit.
处理单元，用于生成第一SCI和第二SCI。收发单元，用于向第一终端发送第一PSCCH。其中，第一PSCCH承载第一SCI，第一SCI用于指示第一PSSCH的时频资源。收发单元，还用于向第一终端发送第一侧行参考信号和第一PSSCH。其中，第一侧行参考信号用于波束训练，第一PSSCH只承载第一MAC CE。第一PSCCH，第一PSSCH和第一侧行参考信号在相同的时隙发送。收发单元，还用于向第一终端发送第二PSCCH。其中，第二PSCCH承载第二SCI，第二SCI用于指示第二PSSCH的时频资源。收发单元，还用于向第一终端发送第二侧行参考信号和第二PSSCH。其中，第二侧行参考信号用于波束训练，第二PSSCH承载第二MAC CE和MAC PDU。第二PSCCH、第二PSSCH和第二侧行参考信号在相同的时隙发送。The processing unit is used to generate a first SCI and a second SCI. The transceiver unit is used to send a first PSCCH to the first terminal. The first PSCCH carries a first SCI, and the first SCI is used to indicate the time-frequency resources of the first PSSCH. The transceiver unit is also used to send a first sideline reference signal and a first PSSCH to the first terminal. The first sideline reference signal is used for beam training, and the first PSSCH only carries a first MAC CE. The first PSCCH, the first PSSCH and the first sideline reference signal are sent in the same time slot. The transceiver unit is also used to send a second PSCCH to the first terminal. The second PSCCH carries a second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH. The transceiver unit is also used to send a second sideline reference signal and a second PSSCH to the first terminal. The second sideline reference signal is used for beam training, and the second PSSCH carries a second MAC CE and a MAC PDU. The second PSCCH, the second PSSCH and the second sideline reference signal are sent in the same time slot.
在一种可能的实现方式中，处理单元，还用于选择第一侧行参考信号和第二侧行参考信号的第一时域资源集合，第一时域资源集合包含的时隙中相邻的两个时隙之间的间隔相同。In a possible implementation, the processing unit is further configured to select a first time domain resource set for the first sidelink reference signal and the second sidelink reference signal, wherein intervals between two adjacent time slots in the time slots included in the first time domain resource set are the same.
在一种可能的实现方式中，第一SCI和第二SCI指示第一侧行参考信号和第二侧行参考信号的第一时域资源集合，第一时域资源集合包含的时隙中相邻的两个时隙之间的间隔相同。In a possible implementation, the first SCI and the second SCI indicate a first time domain resource set of the first sideline reference signal and the second sideline reference signal, and intervals between two adjacent time slots in the time slots included in the first time domain resource set are the same.
在一种可能的实现方式中，第一SCI指示第一侧行参考信号的第二时域资源集合，第二SCI指示第二侧行参考信号的第三时域资源集合。第二时域资源集合与第三时域资源集合组成的并集包含的时隙中相邻的两个时隙之间的间隔相同。可选的，第二时域资源集合与第三时域资源集合组成的并集可以理解为上述第一时域资源集合。In a possible implementation, the first SCI indicates a second time domain resource set of a first side reference signal, and the second SCI indicates a third time domain resource set of a second side reference signal. The interval between two adjacent time slots in the time slots included in the union of the second time domain resource set and the third time domain resource set is the same. Optionally, the union of the second time domain resource set and the third time domain resource set can be understood as the above-mentioned first time domain resource set.
在一种可能的实现方式中，第二SCI包括周期指示信息，周期指示信息用于指示周期T。第二侧行参考信号的第三时域资源集合包括时隙n+k*T，k＝0,1,2,3…。其中，n为第二PSCCH的发送时隙的索引。In a possible implementation, the second SCI includes period indication information, and the period indication information is used to indicate the period T. The third time domain resource set of the second sidelink reference signal includes time slot n+k*T, k=0, 1, 2, 3..., wherein n is the index of the transmission time slot of the second PSCCH.
在一种可能的实现方式中，T的取值为网络终端配置的、预配置的、第一终端配置给第二终端的或第二终端确定的。In a possible implementation manner, the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
在一种可能的实现方式中，第一SCI指示第一侧行参考信号的时域资源信息，时域资源信息包括Q个时隙偏移量tq，Q为大于或等于1的整数，q取遍1至Q的整数。第一侧行参考信号的第二时域资源集合包括时隙n和时隙n+tq。n为PSCCH的发送时隙的索引，tq大于或等于1。一种可能的情况中，在Q大于1的情况下，时隙n和时隙n+tq以及时隙n+k*T组成的集合中，相邻的两个时隙之间的间隔相同。另一种可能的情况中，在Q等于1的情况下，时隙n和时隙n+tq以及时隙n+k*T组成的集合中，相邻的两个时隙之间的间隔相同。 In a possible implementation, the first SCI indicates the time domain resource information of the first sidelink reference signal, and the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer ranging from 1 to Q. The second time domain resource set of the first sidelink reference signal includes time slot n and time slot n+ tq . n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1. In one possible case, when Q is greater than 1, in the set consisting of time slot n, time slot n+ tq, and time slot n+k*T, the interval between two adjacent time slots is the same. In another possible case, when Q is equal to 1, in the set consisting of time slot n, time slot n+ tq , and time slot n+k*T, the interval between two adjacent time slots is the same.
第七方面，提供一种通信装置，包括：处理单元和收发单元。In a seventh aspect, a communication device is provided, comprising: a processing unit and a transceiver unit.
收发单元，用于接收来自第二终端的PSCCH。PSCCH承载SCI，SCI用于指示PSSCH的时频资源。收发单元，还用于接收来自第二终端的侧行参考信号和PSSCH。其中，PSSCH只承载MAC CE，侧行参考信号用于波束训练。PSCCH，PSSCH和侧行参考信号在相同的时隙发送。处理单元，用于确定PSSCH的时频资源。The transceiver unit is used to receive the PSCCH from the second terminal. The PSCCH carries the SCI, and the SCI is used to indicate the time-frequency resources of the PSSCH. The transceiver unit is also used to receive the side reference signal and the PSSCH from the second terminal. Among them, the PSSCH only carries the MAC CE, and the side reference signal is used for beam training. The PSCCH, PSSCH and the side reference signal are sent in the same time slot. The processing unit is used to determine the time-frequency resources of the PSSCH.
在一种可能的实现方式中，SCI指示侧行参考信号的时域资源集合，时域资源集合中相邻的两个时隙之间的间隔相同。In a possible implementation manner, the SCI indicates a time domain resource set of a sidelink reference signal, and the intervals between two adjacent time slots in the time domain resource set are the same.
在一种可能的实现方式中，SCI包括周期指示信息，周期指示信息用于指示周期T。侧行参考信号的时域资源集合包括n+k*T，k＝0,1,2,3…。其中，n为PSCCH的发送时隙的索引。In a possible implementation, the SCI includes period indication information, and the period indication information is used to indicate the period T. The time domain resource set of the sidelink reference signal includes n+k*T, k=0, 1, 2, 3, ... wherein n is the index of the transmission time slot of the PSCCH.
在一种可能的实现方式中，T的取值为网络终端配置的、预配置的、第一终端配置给第二终端的或第二终端确定的。In a possible implementation manner, the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
在一种可能的实现方式中，SCI指示侧行参考信号的时域资源信息，时域资源信息包括Q个时隙偏移量tq，Q为大于或等于1的整数，q取遍1至Q的整数。侧行参考信号的时域资源集合包括时隙n和时隙n+tq。n为PSCCH的发送时隙的索引，tq大于或等于1。一种可能的情况中，在Q大于1的情况下，Q个时隙偏移量中的第q个时隙偏移量tq是Q个时隙偏移量中的第1个时隙偏移量t1的q倍。另一种可能的情况中，在Q等于1的情况下，在时隙n+t1发送的SCI指示的时隙偏移量tq’与时隙偏移量tq相同。In a possible implementation, SCI indicates time domain resource information of a sidelink reference signal, and the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer ranging from 1 to Q. The time domain resource set of the sidelink reference signal includes time slot n and time slot n+ tq . n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1. In a possible case, when Q is greater than 1, the qth time slot offset tq among the Q time slot offsets is q times the 1st time slot offset t1 among the Q time slot offsets. In another possible case, when Q is equal to 1, the time slot offset tq ' indicated by the SCI sent in time slot n+ t1 is the same as the time slot offset tq .
第八方面，提供一种通信装置，包括：处理单元和收发单元。In an eighth aspect, a communication device is provided, comprising: a processing unit and a transceiver unit.
收发单元，用于接收来自第二终端的第一PSCCH。其中，第一PSCCH承载第一SCI，第一SCI用于指示第一PSSCH的时频资源。收发单元，还用于接收来自第二终端的第一侧行参考信号和第一PSSCH，第一侧行参考信号用于波束训练，第一PSSCH只承载第一MAC CE。第一PSCCH，第一PSSCH和第一侧行参考信号在相同的时隙发送。收发单元，还用于接收来自第二终端的第二PSCCH。其中，第二PSCCH承载第二SCI，第二SCI用于指示第二PSSCH的时频资源。收发单元，还用于接收来自第二终端的第二侧行参考信号和第二PSSCH，第二侧行参考信号用于波束训练，第二PSSCH承载第二MAC CE和MAC PDU。第二PSCCH、第二PSSCH和第二侧行参考信号在相同的时隙发送。处理单元，用于确定第一PSSCH的时频资源和第二PSSCH的时频资源。The transceiver unit is used to receive a first PSCCH from a second terminal. The first PSCCH carries a first SCI, and the first SCI is used to indicate the time-frequency resources of the first PSSCH. The transceiver unit is also used to receive a first sideline reference signal and a first PSSCH from the second terminal. The first sideline reference signal is used for beam training, and the first PSSCH only carries a first MAC CE. The first PSCCH, the first PSSCH and the first sideline reference signal are sent in the same time slot. The transceiver unit is also used to receive a second PSCCH from the second terminal. The second PSCCH carries a second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH. The transceiver unit is also used to receive a second sideline reference signal and a second PSSCH from the second terminal. The second sideline reference signal is used for beam training, and the second PSSCH carries a second MAC CE and a MAC PDU. The second PSCCH, the second PSSCH and the second sideline reference signal are sent in the same time slot. The processing unit is used to determine the time-frequency resources of the first PSSCH and the time-frequency resources of the second PSSCH.
在一种可能的实现方式中，第一SCI和第二SCI指示第一侧行参考信号和第二侧行参考信号的第一时域资源集合，第一时域资源集合包含的时隙中相邻的两个时隙之间的间隔相同。In a possible implementation, the first SCI and the second SCI indicate a first time domain resource set of the first sideline reference signal and the second sideline reference signal, and intervals between two adjacent time slots in the time slots included in the first time domain resource set are the same.
在一种可能的实现方式中，第一SCI指示第一侧行参考信号的第二时域资源集合，第二SCI指示第二侧行参考信号的第三时域资源集合。第二时域资源集合与第三时域资源集合组成的并集包含的时隙中相邻的两个时隙之间的间隔相同。In a possible implementation, the first SCI indicates a second time domain resource set of the first sideline reference signal, and the second SCI indicates a third time domain resource set of the second sideline reference signal. The interval between two adjacent time slots in the time slots included in the union of the second time domain resource set and the third time domain resource set is the same.
在一种可能的实现方式中，第二SCI包括周期指示信息，周期指示信息用于指示周期T。第二侧行参考信号的第三时域资源集合包括时隙n+k*T，k＝0,1,2,3…。其中，n为第二PSCCH的发送时隙的索引。In a possible implementation, the second SCI includes period indication information, and the period indication information is used to indicate the period T. The third time domain resource set of the second sidelink reference signal includes time slot n+k*T, k=0, 1, 2, 3..., wherein n is the index of the transmission time slot of the second PSCCH.
在一种可能的实现方式中，T的取值为网络终端配置的、预配置的、第一终端配置给第二终端的或第二终端确定的。In a possible implementation manner, the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
在一种可能的实现方式中，第一SCI指示第一侧行参考信号的时域资源信息，时域资源信息包括Q个时隙偏移量tq，Q为大于或等于1的整数，q取遍1至Q的整数。第一侧行参考信号的第二时域资源集合包括时隙n和时隙n+tq。n为PSCCH的发送时隙的索引，tq大于或等于1。一种可能的情况中，在Q大于1的情况下，时隙n和时隙n+tq以及时隙n+k*T组成的集合中，相邻的两个时隙之间的间隔相同。另一种可能的情况中，在Q等于1的情况下，时隙n和时隙n+tq以及时隙n+k*T组成的集合中，相邻的两个时隙之间的间隔相同。In a possible implementation, the first SCI indicates the time domain resource information of the first sidelink reference signal, and the time domain resource information includes Q time slot offsets tq , where Q is an integer greater than or equal to 1, and q is an integer ranging from 1 to Q. The second time domain resource set of the first sidelink reference signal includes time slot n and time slot n+ tq . n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1. In one possible case, when Q is greater than 1, in the set consisting of time slot n, time slot n+ tq, and time slot n+k*T, the interval between two adjacent time slots is the same. In another possible case, when Q is equal to 1, in the set consisting of time slot n, time slot n+ tq , and time slot n+k*T, the interval between two adjacent time slots is the same.
第九方面，提供了一种通信装置，该通信装置可以为上述实施例中第五方面至第八方面中任一种可能的实现方式中的通信装置，或者为设置在第五方面至第八方面中任一方面的通信装置中的芯片。该通信装置包括通信接口以及处理器，可选的，还包括存储器。其中，该存储器用于存储计算机程序或指令或者数据，处理器与存储器、通信接口耦合，当处理器读取所述计算机程序或指令或数据时，使通信装 置执行上述第一方面中任一种可能的实现方式中第二终端所执行的方法，或使通信装置执行上述第二方面中任一种可能的实现方式中第二终端所执行的方法，或使通信装置执行上述第三方面中任一种可能的实现方式中第一终端所执行的方法，或使通信装置执行上述第四方面中任一种可能的实现方式中第一终端所执行的方法。In a ninth aspect, a communication device is provided. The communication device may be a communication device in any possible implementation of the fifth to eighth aspects of the above embodiments, or a chip set in a communication device in any aspect of the fifth to eighth aspects. The communication device includes a communication interface and a processor, and optionally, also includes a memory. The memory is used to store computer programs, instructions, or data. The processor is coupled to the memory and the communication interface. When the processor reads the computer program, instructions, or data, the communication device The method is configured to execute the method executed by the second terminal in any possible implementation manner of the first aspect above, or the communication device is configured to execute the method executed by the second terminal in any possible implementation manner of the second aspect above, or the communication device is configured to execute the method executed by the first terminal in any possible implementation manner of the third aspect above, or the communication device is configured to execute the method executed by the first terminal in any possible implementation manner of the fourth aspect above.
应理解，该通信接口可以通过所述通信装置中的天线、馈线和编解码器等实现，或者，如果通信装置为设置在网络设备或终端设备中的芯片，则通信接口可以是该芯片的输入/输出接口，例如输入/输出管脚等。所述通信装置还可以包括收发器，用于该通信装置与其它设备进行通信。It should be understood that the communication interface can be implemented by an antenna, a feeder, a codec, etc. in the communication device, or, if the communication device is a chip provided in a network device or a terminal device, the communication interface can be an input/output interface of the chip, such as an input/output pin, etc. The communication device may also include a transceiver for the communication device to communicate with other devices.
第十方面，本申请实施例提供了一种芯片***，该芯片***包括处理器，还可以包括存储器，用于实现第一方面至第四方面中任一种可能的实现方式中的第一终端或第二终端执行的方法。在一种可能的实现方式中，所述芯片***还包括存储器，用于保存程序指令和/或数据。该芯片***可以由芯片构成，也可以包含芯片和其他分立器件。In a tenth aspect, an embodiment of the present application provides a chip system, which includes a processor and may also include a memory, for implementing the method executed by the first terminal or the second terminal in any possible implementation of the first to fourth aspects. In a possible implementation, the chip system also includes a memory for storing program instructions and/or data. The chip system may be composed of a chip, or may include a chip and other discrete devices.
第十一方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序或指令，当该计算机程序或指令被运行时，实现上述各方面中由第一终端或第二终端执行的方法。In an eleventh aspect, the present application provides a computer-readable storage medium storing a computer program or instructions, which, when executed, implements the method performed by the first terminal or the second terminal in the above aspects.
第十二方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码或指令，当所述计算机程序代码或指令被运行时，使得上述各方面中由第一终端或第二终端执行的方法被执行。In a twelfth aspect, a computer program product is provided, the computer program product comprising: computer program code or instructions, when the computer program code or instructions are executed, the method performed by the first terminal or the second terminal in the above aspects is executed.
第十三方面，提供了一种通信装置，所述通信装置包括执行上述各方面方法的单元或模块。In a thirteenth aspect, a communication device is provided, wherein the communication device includes a unit or module for executing the above-mentioned methods.
第十四方面，提供了一种芯片***，包括逻辑电路和输入输出接口。逻辑电路，用于执行上述第一终端或第二终端所执行的方法。输入输出接口，用于与其他装置。In a fourteenth aspect, a chip system is provided, comprising a logic circuit and an input/output interface. The logic circuit is used to execute the method executed by the first terminal or the second terminal. The input/output interface is used to communicate with other devices.
上述第三方面至第十四方面及其实现方式的有益效果可以参考对第一方面和第二方面的方法及其实现方式的有益效果的描述。The beneficial effects of the third to fourteenth aspects and their implementations can refer to the description of the beneficial effects of the methods of the first and second aspects and their implementations.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1A为本申请实施例提供的一种通信***的示意图；FIG1A is a schematic diagram of a communication system provided in an embodiment of the present application;
图1B为本申请实施例提供的另一种通信***的示意图；FIG1B is a schematic diagram of another communication system provided in an embodiment of the present application;
图2为一种V2X的场景示意图；FIG2 is a schematic diagram of a V2X scenario;
图3为一种V2V的场景示意图；FIG3 is a schematic diagram of a V2V scenario;
图4为一种物理时隙和逻辑时隙的示意图；FIG4 is a schematic diagram of a physical time slot and a logical time slot;
图5为一种PSCCH的资源位置示意图；FIG5 is a schematic diagram of a PSCCH resource location;
图6为一种资源选择方式的示意图；FIG6 is a schematic diagram of a resource selection method;
图7为一种时隙结构的示意图；FIG7 is a schematic diagram of a time slot structure;
图8为本申请实施例提供的一种终端的波束示意图；FIG8 is a schematic diagram of a beam of a terminal provided in an embodiment of the present application;
图9为本申请实施例提供的一种时隙结构的示意图；FIG9 is a schematic diagram of a time slot structure provided in an embodiment of the present application;
图10为本申请实施例提供的一种资源指示方法的示例性流程图；FIG10 is an exemplary flow chart of a resource indication method provided in an embodiment of the present application;
图11为本申请实施例提供的一种侧行参考信号的时隙示意图；FIG11 is a schematic diagram of a time slot of a side reference signal provided in an embodiment of the present application;
图12为本申请实施例提供的另一种侧行参考信号的时隙示意图；FIG12 is a schematic diagram of a time slot of another side reference signal provided in an embodiment of the present application;
图13为本申请实施例提供的另一种侧行参考信号的时隙示意图；FIG13 is a schematic diagram of a time slot of another side reference signal provided in an embodiment of the present application;
图14为本申请实施例提供的另一种时隙结构的示意图；FIG14 is a schematic diagram of another time slot structure provided in an embodiment of the present application;
图15为本申请实施例提供的一种资源指示方法的示例性流程图；FIG15 is an exemplary flow chart of a resource indication method provided in an embodiment of the present application;
图16为本申请实施例提供的另一种侧行参考信号的时隙示意图；FIG16 is a schematic diagram of a time slot of another side reference signal provided in an embodiment of the present application;
图17为本申请实施例提供的一种资源指示方法的示例性流程图；FIG17 is an exemplary flow chart of a resource indication method provided in an embodiment of the present application;
图18为本申请实施例提供的另一种侧行参考信号的时隙示意图；FIG18 is a schematic diagram of a time slot of another side reference signal provided in an embodiment of the present application;
图19为本申请实施例提供的一种通信装置的示意图；FIG19 is a schematic diagram of a communication device provided in an embodiment of the present application;
图20为本申请实施例提供的另一种通信装置的示意图；FIG20 is a schematic diagram of another communication device provided in an embodiment of the present application;
图21为本申请实施例提供的另一种通信装置的示意图；FIG21 is a schematic diagram of another communication device provided in an embodiment of the present application;
图22为本申请实施例提供的另一种通信装置的示意图。Figure 22 is a schematic diagram of another communication device provided in an embodiment of the present application.
具体实施方式Detailed ways
以下，结合附图介绍本申请实施例提供的技术方案。 The technical solution provided by the embodiments of the present application is described below in conjunction with the accompanying drawings.
参阅图1A，介绍本申请实施例提供的技术方案所适用的通信***。参见图1A，通信***可以包括终端设备101和终端设备102。其中，终端设备101和终端设备102可以通过侧行链路进行通信。可以理解的是，该通信***中还可以包括更多的终端设备，图1A中未示出。Referring to FIG. 1A , a communication system to which the technical solution provided in an embodiment of the present application is applicable is introduced. Referring to FIG. 1A , the communication system may include a terminal device 101 and a terminal device 102. The terminal device 101 and the terminal device 102 may communicate via a side link. It is understandable that the communication system may further include more terminal devices, which are not shown in FIG. 1A .
可选的，该通信***还可以包括网络设备。参阅图1B，该通信***中可以包括网络设备103。网络设备103可以与终端设备101通信，网络设备103也可以与终端设备102通信。Optionally, the communication system may further include a network device. Referring to FIG. 1B , the communication system may include a network device 103 . The network device 103 may communicate with the terminal device 101 , and the network device 103 may also communicate with the terminal device 102 .
本申请涉及的终端设备，包括向用户提供语音和/或数据信号连通性的设备，具体的，包括向用户提供语音的设备，或包括向用户提供数据信号连通性的设备，或包括向用户提供语音和数据信号连通性的设备。例如可以包括具有无线连接功能的手持式设备、或连接到无线调制解调器的处理设备。该终端设备可以包括用户设备(user equipment，UE)、无线终端设备、移动终端设备、设备到设备通信(device-to-device，D2D)终端设备、V2X终端设备、机器到机器/机器类通信(machine-to-machine/machine-type communications，M2M/MTC)终端设备、物联网(internet of things，IoT)终端设备、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、远程站(remote station)、接入点(access point，AP)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、或用户装备(user device)、卫星、无人机、气球或飞机等。例如，可以包括移动电话(或称为“蜂窝”电话)，具有移动终端设备的计算机，便携式、袖珍式、手持式、计算机内置的移动装置等。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiation protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、等设备。还包括受限设备，例如功耗较低的设备，或存储能力有限的设备，或计算能力有限的设备等。例如包括条码、射频识别(radio frequency identification，RFID)、传感器、全球定位***(global positioning system，GPS)、激光扫描器等信息传感设备。作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备或智能穿戴式设备等，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称。而如上介绍的各种终端设备，如果位于车辆上(例如放置在车辆内或安装在车辆内)，都可以认为是车载终端设备，车载终端设备例如也称为车载单元(on-board unit，OBU)。The terminal device involved in the present application includes a device that provides voice and/or data signal connectivity to a user, specifically, includes a device that provides voice to a user, or includes a device that provides data signal connectivity to a user, or includes a device that provides voice and data signal connectivity to a user. For example, it may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem. The terminal device may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) terminal equipment, V2X terminal equipment, machine-to-machine/machine-type communications (M2M/MTC) terminal equipment, Internet of Things (IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal equipment, access terminal equipment, user terminal equipment, user agent, or user equipment, satellite, drone, balloon or aircraft, etc. For example, it may include a mobile phone (or "cellular" phone), a computer with a mobile terminal device, a portable, pocket-sized, handheld, or computer-built-in mobile device, etc. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA), and other devices. It also includes limited devices, such as devices with low power consumption, or devices with limited storage capacity, or devices with limited computing power. For example, it includes information sensing devices such as barcodes, radio frequency identification (RFID), sensors, global positioning systems (GPS), laser scanners, etc. As an example but not a limitation, in the embodiment of the present application, the terminal device can also be a wearable device. Wearable devices can also be called wearable smart devices or smart wearable devices, etc., which are the general term for wearable devices that are intelligently designed and developed for daily wear using wearable technology. The various terminal devices introduced above, if located on a vehicle (for example, placed in a vehicle or installed in a vehicle), can be considered as vehicle-mounted terminal devices, and vehicle-mounted terminal devices are also called on-board units (OBU).
本申请所涉及的网络设备，例如包括接入网(access network，AN)设备，例如基站(例如，接入点)，可以是指接入网中在空口通过一个或多个小区与无线终端设备通信的设备，或者例如，一种车到一切(vehicle-to-everything，V2X)技术中的网络设备为路侧单元(road side unit，RSU)。网络设备可以包括长期演进(long term evolution，LTE)***或高级长期演进(long term evolution-advanced，LTE-A)中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，或者也可以包括演进的分组核心网络(evolved packet core，EPC)、第五代移动通信技术(the 5th generation，5G)、新空口(new radio，NR)***(也简称为NR***)中的下一代节点B(next generation node B，gNB)或者也可以包括云接入网(cloud radio access network，Cloud RAN)***中的集中式单元(centralized unit，CU)和分布式单元(distributed unit，DU)，卫星、无人机、气球或飞机等，本申请实施例并不限定。The network devices involved in the present application include, for example, access network (AN) devices, such as base stations (e.g., access points), which may refer to devices in the access network that communicate with wireless terminal devices through one or more cells at the air interface, or, for example, a network device in vehicle-to-everything (V2X) technology is a road side unit (RSU). The network device may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (LTE) system or long term evolution-advanced (LTE-A), or may include an evolved packet core network (EPC), the 5th generation (5G), a next generation node B (gNB) in a new radio (NR) system (also referred to as an NR system), or may include a centralized unit (CU) and a distributed unit (DU) in a cloud radio access network (Cloud RAN) system, a satellite, a drone, a balloon or an airplane, etc., and the embodiments of the present application are not limited.
无线通信经历了从第一代模拟通信***到新型5G NR***的技术演变。在这复杂的演变过程中，基于多输入多输出(multiple input multiple output，MIMO)的波束成形是一个重要方面。波束成形可以看作空间滤波过程，其技术原理是将信号的发送或接收局限在某一特定的角度范围内，从而提高增益并降低干扰。波束成形在第二代移动通信***(2nd generation，2G)中就已经出现，当时是通过选择不同发送或接收天线来实现的。相比之下，第三代移动通信***(3rd generation，3G)及之后的通信***偏向于使用相控阵实现波束成形。Wireless communications have undergone a technological evolution from the first generation of analog communication systems to the new 5G NR systems. In this complex evolution, beamforming based on multiple input multiple output (MIMO) is an important aspect. Beamforming can be regarded as a spatial filtering process. Its technical principle is to limit the transmission or reception of signals to a certain angle range, thereby increasing gain and reducing interference. Beamforming has already appeared in the second generation of mobile communication systems ( 2nd generation, 2G), when it was achieved by selecting different transmitting or receiving antennas. In contrast, the third generation of mobile communication systems ( 3rd generation, 3G) and later communication systems tend to use phased arrays to achieve beamforming.
在NR***中，波束成形变得更为重要，它不仅是提升频谱效率的重要方法，也是使用6GHz以上的FR2的重要支撑。为了高效合理地进行波束成形，NR设计了波束管理(beam management，BM)过程。In NR systems, beamforming becomes more important. It is not only an important method to improve spectrum efficiency, but also an important support for using FR2 above 6GHz. In order to perform beamforming efficiently and reasonably, NR designs the beam management (BM) process.
波束管理是5G NR针对FR2提出的重要技术，包括两个重要功能：波束训练和波束失败恢复。波束训练包括发送波束训练和接收波束训练，可以划分为三个步骤，各个步骤的操作归纳如下：Beam management is an important technology proposed by 5G NR for FR2, including two important functions: beam training and beam failure recovery. Beam training includes transmit beam training and receive beam training, which can be divided into three steps. The operations of each step are summarized as follows:
S1：基站基于一个发送波束集合发送参考信号(reference signal，RS)。S1: The base station sends a reference signal (RS) based on a set of transmit beams.
其中，发送波束集合可以包含一个或多个发送波束。一个发送波束可以对应于一个发送方向，多个不同的发送波束可以分别对应于不同的发送方向。终端可以通过接收波束接收RS，并对RS进行测量和反馈，选择出基站的发送波束和终端的接收波束。 The transmit beam set may include one or more transmit beams. One transmit beam may correspond to one transmit direction, and multiple different transmit beams may correspond to different transmit directions. The terminal may receive the RS through the receive beam, measure and feedback the RS, and select the transmit beam of the base station and the receive beam of the terminal.
S2：在S1基础上，基站基于一个更小的发送波束集合发送RS。S2: Based on S1, the base station sends RS based on a smaller set of transmit beams.
S2中，一个更小的发送波束集合可以是S1中发送波束集合的子集，或者可以是对应于S1中发送波束集合包含的某一个或多个发送波束的方向的更窄波束集合。终端可以通过接收波束接收RS，并对RS进行测量和反馈，改进基站的发送波束。In S2, a smaller transmit beam set may be a subset of the transmit beam set in S1, or may be a narrower beam set corresponding to the direction of one or more transmit beams included in the transmit beam set in S1. The terminal may receive the RS through the receive beam, measure and provide feedback on the RS, and improve the transmit beam of the base station.
S3：基站使用一个发送波束发送RS。S3: The base station sends RS using one transmit beam.
S3中的一个发送波束可以是S2中终端改进基站的发送波束。终端利用不同接收波束接收RS，并对RS进行测量和反馈，改进终端的接收波束。One of the transmission beams in S3 may be the transmission beam of the base station improved by the terminal in S2. The terminal receives RSs using different reception beams, measures and feeds back the RSs, and improves the reception beam of the terminal.
基于以上三个步骤，5G NR下行链路的波束训练得以进行。上述三个步骤中S1和S2是基站进行发送波束训练的过程。上述三个步骤中，RS可以是信道状态信息参考信号(channel state information reference signal，CSI-RS)。Based on the above three steps, the beam training of 5G NR downlink can be carried out. In the above three steps, S1 and S2 are the processes of the base station to perform the transmission beam training. In the above three steps, RS can be a channel state information reference signal (CSI-RS).
在上述波束训练过程中，基站将配置若干波束方向，每个波束方向对应一个CSI-RS资源以及终端进行反馈时应使用的时频资源。基站以扫描的方式周期性或非周期地依次向各个方向发送CSI-RS，终端测量得到CSI-RS的接收功率(reference signal received power，RSRP)并获取CSI-RS的信道状态信息参考信号资源指示(CSI-RS resource indicator，CRI)。终端在得到RSRP后，选定一个或若干个RSRP及相应的CRI并反馈给基站。基站利用反馈信息判定应使用的发送波束。与S1和S2对应，上行链路的波束训练也使用相似的流程，但使用的参考信号不同。In the above beam training process, the base station will configure several beam directions, each beam direction corresponds to a CSI-RS resource and the time-frequency resources that the terminal should use when providing feedback. The base station periodically or non-periodically sends CSI-RS to each direction in turn in a scanning manner. The terminal measures the received power (reference signal received power, RSRP) of the CSI-RS and obtains the channel state information reference signal resource indicator (CSI-RS resource indicator, CRI) of the CSI-RS. After obtaining the RSRP, the terminal selects one or several RSRPs and the corresponding CRI and feeds them back to the base station. The base station uses the feedback information to determine the transmit beam to be used. Corresponding to S1 and S2, the uplink beam training also uses a similar process, but the reference signals used are different.
C-V2X是基于蜂窝***开发的V2X通信技术。它利用和增强了当前的蜂窝网络功能和元素，以实现车辆网络中各种节点之间的低延迟和高可靠性通信。参阅图2可以看出，V2X通信技术可以包括车与车的通信(vehicle to vehicle，V2V)、车与行人的通信(vehicle to pedestrian，V2P)、车与基础设施的通信(vehicle to infrastructure，V2I)、车与网络的通信(vehicle to network，V2N)。随着蜂窝***从LTE向5G的演进，C-V2X从LTE-V2X向NR-V2X演进。C-V2X is a V2X communication technology developed based on cellular systems. It utilizes and enhances current cellular network functions and elements to achieve low-latency and high-reliability communication between various nodes in the vehicle network. Referring to Figure 2, it can be seen that V2X communication technology can include vehicle-to-vehicle communication (V2V), vehicle-to-pedestrian communication (V2P), vehicle-to-infrastructure communication (V2I), and vehicle-to-network communication (V2N). As cellular systems evolve from LTE to 5G, C-V2X evolves from LTE-V2X to NR-V2X.
V2X通信在降低车辆碰撞事故方面有巨大的潜力，因此还可以减少相应的伤亡人数。V2X的优势不仅仅局限于提升安全性。可以进行V2X通信的车辆有助于更好的进行交通管理，进一步促进绿色交通和更低的能源消耗。智能交通***(intelligent transportation system，ITS)就是结合V2X的一个应用。基于V2X技术，车辆用户(vehicle UE，V-UE)能将自身的一些信息，例如位置、速度、意图(如转弯、并线或倒车)等信息周期性以及一些非周期性的事件触发的信息向周围的V-UE发送，同样的V-UE也会实时接收周围用户的信息。5G NR V2X可以支持更低的传输时延，更可靠的通信传输，更高的吞吐量，更好的用户体验，满足更加广泛的应用场景需求。V2X communication has great potential to reduce vehicle collision accidents, thereby reducing the corresponding number of casualties. The advantages of V2X are not limited to improving safety. Vehicles that can perform V2X communication can help better manage traffic, further promote green transportation and lower energy consumption. Intelligent transportation system (ITS) is an application that combines V2X. Based on V2X technology, vehicle users (vehicle UE, V-UE) can send some of their own information, such as location, speed, intention (such as turning, merging or reversing), etc., periodically and some non-periodic event-triggered information to the surrounding V-UE. Similarly, V-UE will also receive information from surrounding users in real time. 5G NR V2X can support lower transmission latency, more reliable communication transmission, higher throughput, better user experience, and meet the needs of a wider range of application scenarios.
V2V是V2X中的一个特例，其聚焦于车辆和车辆之间的SL通信。通过V2V通信，路上车辆可以实时地获取其他车辆的行驶信息、传感器信息等，其扮演着使能自动驾驶的重要角色。如图3所示，在车辆编队业务中，队首车辆以V2V的方式向编队内发送车辆操纵信息使后续车辆实现无人驾驶。对于扩展传感器，某车辆在感知到其他车辆后将此传感器信息通过V2V告知其他车辆，解决因车辆自身传感器能力有限产生的环境感知不准确的问题。V2V is a special case of V2X, which focuses on SL communication between vehicles. Through V2V communication, vehicles on the road can obtain driving information, sensor information, etc. of other vehicles in real time, which plays an important role in enabling autonomous driving. As shown in Figure 3, in the vehicle formation business, the head vehicle sends vehicle control information to the formation in a V2V manner to enable subsequent vehicles to achieve unmanned driving. For extended sensors, after a vehicle senses other vehicles, it informs other vehicles of this sensor information through V2V, solving the problem of inaccurate environmental perception caused by the limited sensor capabilities of the vehicle itself.
V2V通信技术可以延伸应用到任何***下的D2D通信。然而，目前V2V通信仍存在很多问题，为了促进V2V和V2X技术的长足发展，V2V SL中的波束管理是一个亟待解决的重要方面。V2V communication technology can be extended to D2D communication in any system. However, there are still many problems in V2V communication. In order to promote the long-term development of V2V and V2X technologies, beam management in V2V SL is an important aspect that needs to be solved urgently.
R16标准中定义了SL通信的两种资源分配模式：模式1(mode 1)和模式2。在模式1中，基站通过Uu(UTRAN-to-UE)空口为V2X分配传输资源，因此模式1下的终端必须在网络覆盖范围内。SL的频谱资源可以与上行链路通信资源共享。在SL通信中，模式1和模式2可以分配到不同的资源池，也可以共享资源池。资源池共享可以提高资源的利用效率，但也很容易出现模式1和模式2的冲突问题。因此，模式1的终端会通知模式2的终端其未来传输所分配的资源。The R16 standard defines two resource allocation modes for SL communication: mode 1 and mode 2. In mode 1, the base station allocates transmission resources to V2X through the Uu (UTRAN-to-UE) air interface, so the terminals in mode 1 must be within the network coverage. The spectrum resources of SL can be shared with uplink communication resources. In SL communication, mode 1 and mode 2 can be allocated to different resource pools or share resource pools. Resource pool sharing can improve resource utilization efficiency, but it is also easy to cause conflicts between mode 1 and mode 2. Therefore, the terminal in mode 1 will notify the terminal in mode 2 of the resources allocated for its future transmission.
在网络覆盖范围下，终端可通过接收网络设备的***消息块(system information block，SIB)、小区级(cell-specific)的无线资源控制(radio resource control，RRC)信令或者终端用户级(UE-specific)的RRC信令获得SL资源池(resource pool)配置信息和/或SL带宽部分(bandwidth part，BWP)配置信息。Within the network coverage, the terminal can obtain SL resource pool configuration information and/or SL bandwidth part (BWP) configuration information by receiving the system information block (SIB) of the network device, cell-level (cell-specific) radio resource control (RRC) signaling or terminal user level (UE-specific) RRC signaling.
终端也可以使用预配置的SL资源池配置信息或SL BWP配置信息。例如，在网络覆盖范围外时，SL资源池配置信息包括资源池资源信息，资源池资源信息用于指示SL资源池。资源池是时频资源的集合，用于终端之间进行侧行通信。资源池可以包括码域资源。资源池的资源用于包括终端发送和接收以下至少一种物理信道的资源： The terminal may also use pre-configured SL resource pool configuration information or SL BWP configuration information. For example, when outside the network coverage, the SL resource pool configuration information includes resource pool resource information, and the resource pool resource information is used to indicate the SL resource pool. The resource pool is a collection of time-frequency resources used for sideline communication between terminals. The resource pool may include code domain resources. The resources of the resource pool are used to include resources for the terminal to send and receive at least one of the following physical channels:
物理层侧行链路控制信道(physical sidelink control channel，PSCCH)，用于承载侧行链路控制信息(sidelink control information，SCI)。The physical layer sidelink control channel (PSCCH) is used to carry sidelink control information (SCI).
物理层侧行链路共享信道(physical sidelink shared channel，PSSCH)，用于承载控制信息、数据、侧行信道状态指示(channel state information，CSI)反馈信息等至少一种。The physical sidelink shared channel (PSSCH) is used to carry at least one of control information, data, and sidelink channel state information (CSI) feedback information.
物理层侧行链路发现信道(physical sidelink control channel，PSDCH)，用于承载SL发现消息。Physical layer sidelink control channel (PSDCH) is used to carry SL discovery messages.
物理层侧行链路反馈信道(physical sidelink feedback channel，PSFCH)，用于侧行反馈信息，侧行反馈信息可以用于对数据信息的反馈，包括混合自动重传请求(hybrid automatic repeat request，HARQ)应答反馈信息。例如确认应答(acknowledge，ACK)或否定应答(negative acknowledge，NACK)，还可以包括CSI反馈信息、还可以用于指示如下至少一种信息，例如，节能信息、资源辅助信息(包括推荐使用的资源，不推荐使用的资源，资源碰撞、资源预约冲突、过去发生了或未来即将发生半双工冲突等)。The physical sidelink feedback channel (PSFCH) is used for sidelink feedback information. The sidelink feedback information can be used for feedback of data information, including hybrid automatic repeat request (HARQ) response feedback information. For example, acknowledgement (ACK) or negative acknowledgement (NACK), and can also include CSI feedback information, and can also be used to indicate at least one of the following information, such as energy saving information, resource auxiliary information (including recommended resources, not recommended resources, resource collision, resource reservation conflict, half-duplex conflict that has occurred in the past or will occur in the future, etc.).
物理层侧行链路广播信道(physical sidelink broadcast channel,PSBCH)，用于承载侧行同步相关的信息等。PSBCH所承载的业务类型可以包括单播、组播和/或广播通信类型。The physical sidelink broadcast channel (PSBCH) is used to carry information related to sidelink synchronization. The service types carried by PSBCH may include unicast, multicast and/or broadcast communication types.
可以理解的是，本申请的实施例中，PSFCH、PSBCH、PSCCH和PSSCH只是分别作为侧行反馈信道、侧行发现信道、侧行控制信道和侧行数据信道的一种举例，在不同的***和不同的场景中，数据信道和控制信道可能有不同的名称，本申请的实施例对此并不做限定。It can be understood that in the embodiments of the present application, PSFCH, PSBCH, PSCCH and PSSCH are merely examples of side feedback channels, side discovery channels, side control channels and side data channels, respectively. In different systems and different scenarios, data channels and control channels may have different names, and the embodiments of the present application do not limit this.
上文中，在SL资源池的时域上，包括一个或多个时间单元，时间单元可以为一个或若干个符号、一个或若干个时隙(slot)，一个或若干个微时隙(mini-slot)、一个或若干个子帧、一个或若干个帧等。一个或多个时间单元可以是在时间上连续的，也可以是离散的。应理解，在一个资源池内时域单元是逻辑上连续的。In the above, in the time domain of the SL resource pool, one or more time units are included, and the time unit may be one or more symbols, one or more time slots, one or more mini-slots, one or more subframes, one or more frames, etc. One or more time units may be continuous in time or discrete. It should be understood that the time domain units in a resource pool are logically continuous.
参阅图4，时隙1至时隙8是时间上连续的时隙，称这种时隙为物理时隙。将物理时隙——时隙1，时隙3，时隙5和时隙8配置为属于一个资源池的时隙。因资源池所包含的时隙在时间上可以是不连续的，那么从该资源池的角度而言，物理时隙上的时隙1，时隙3，时隙5和时隙8对应为资源池中的时隙1’、时隙2’、时隙3’和时隙4’，那么。该资源池中包含的连续的时隙(即时隙1’、时隙2’、时隙3’和时隙4’)为从资源池的逻辑上讲是连续的时隙，称这种逻辑上连续但时间上不一定连续的时隙为逻辑时隙。Referring to FIG. 4 , time slots 1 to 8 are time slots that are continuous in time, and such time slots are called physical time slots. The physical time slots—time slot 1, time slot 3, time slot 5, and time slot 8—are configured as time slots belonging to a resource pool. Since the time slots contained in the resource pool may be discontinuous in time, from the perspective of the resource pool, time slots 1, 3, 5, and 8 on the physical time slots correspond to time slots 1’, 2’, 3’, and 4’ in the resource pool. Then. The continuous time slots contained in the resource pool (i.e., time slot 1’, 2’, 3’, and 4’) are logically continuous time slots from the perspective of the resource pool. Such logically continuous but not necessarily temporally continuous time slots are called logical time slots.
在SL资源池的频域上，包括一个或多个频域单元，频域单元可以是一个资源元素(resource element，RE)，若干个RE，一个资源块(resource block，RB)、若干个RB、一个子信道(sub channel)、若干个子信道。子信道的大小，即表示一个子信道包括一个或多个在频域上连续的(continuous)或交错的(interlaced)RB数量，可以是10、12、15、20、25、50、75和100整数。In the frequency domain of the SL resource pool, it includes one or more frequency domain units. A frequency domain unit can be a resource element (RE), several REs, a resource block (RB), several RBs, a sub-channel, and several sub-channels. The size of a sub-channel, that is, the number of RBs that a sub-channel includes one or more continuous or interlaced RBs in the frequency domain, can be integers of 10, 12, 15, 20, 25, 50, 75, and 100.
SL资源池配置信息还可以包括PSCCH的配置信息，PSCCH的配置信息包括一个时隙中PSCCH所占用的符号的数量和一个子信道中PSCCH所占用的RB个数。SL BWP配置信息可以包括SL资源池信息，用于配置BWP内包括的资源池的个数。SL BWP配置信息可以包括SL带宽信息，用于指示进行SL通信的带宽大小，例如指示SL带宽为20兆赫兹(MHz)。SL BWP配置信息还可以包括SL的符号信息，用于指示一个时隙上起始的SL符号位置和所占用的连续的SL符号的个数。SL BWP配置信息还可以包括SL的子载波间隔和循环前缀信息，用于指示SL通信所使用的子载波间隔和循环前缀。循环前缀指示扩展循环前缀或正常循环前缀。在一种可能的配置中，SL BWP配置信息还可以包括SL资源池配置信息。The SL resource pool configuration information may also include the configuration information of the PSCCH, and the configuration information of the PSCCH includes the number of symbols occupied by the PSCCH in a time slot and the number of RBs occupied by the PSCCH in a subchannel. The SL BWP configuration information may include the SL resource pool information, which is used to configure the number of resource pools included in the BWP. The SL BWP configuration information may include the SL bandwidth information, which is used to indicate the bandwidth size for SL communication, for example, indicating that the SL bandwidth is 20 megahertz (MHz). The SL BWP configuration information may also include the SL symbol information, which is used to indicate the starting SL symbol position on a time slot and the number of continuous SL symbols occupied. The SL BWP configuration information may also include the SL subcarrier spacing and cyclic prefix information, which are used to indicate the subcarrier spacing and cyclic prefix used for SL communication. The cyclic prefix indicates an extended cyclic prefix or a normal cyclic prefix. In one possible configuration, the SL BWP configuration information may also include the SL resource pool configuration information.
本文中，除非特殊说明时间单元的含义，均用时隙进行描述，但不限于时间单位只为时隙。本文中，除非特殊说明时频域单元的含义，均用子信道进行描述，但不限于频域单位只为子信道。In this document, unless the meaning of the time unit is otherwise specified, the time unit is described as a time slot, but the time unit is not limited to being a time slot. In this document, unless the meaning of the time-frequency domain unit is otherwise specified, the time unit is described as a subchannel, but the frequency domain unit is not limited to being a subchannel.
SL通信中的SCI分为第一级SCI和第二级SCI。PSCCH承载第一级SCI，第一级SCI用于调度第二级SCI和PSSCH，由于SL是分布式***，所有终端均需要通过正确译码第一级SCI后，才能译码第二级SCI和PSSCH。但为了减少终端对PSCCH的盲检复杂度，PSCCH的资源位置是相对固定的，所承载的第一级SCI格式信息也是相对唯一的，即终端不需要去盲检PSCCH所在的时频资源位置，也不需要盲检不同格式的SCI，终端只需要在固定的PSCCH时频资源位置检测是否存在第一级SCI即可。PSCCH可能在每个时隙上的每个子信道中存在，即一个PSCCH的时域起始位置为每个时隙上的用于SL传输的第二个符号，长度为2或3个符号(由资源池配置信息确定)，频域位置为每个子信道最小的PRB index，长度为至少10个PRB(由资源池配置信息确定)但不超过子信道的大小，如图5所示。 SCI in SL communication is divided into first-level SCI and second-level SCI. PSCCH carries first-level SCI, and first-level SCI is used to schedule second-level SCI and PSSCH. Since SL is a distributed system, all terminals need to correctly decode first-level SCI before decoding second-level SCI and PSSCH. However, in order to reduce the blind detection complexity of PSCCH by the terminal, the resource position of PSCCH is relatively fixed, and the first-level SCI format information carried is also relatively unique, that is, the terminal does not need to blindly detect the time-frequency resource position where PSCCH is located, nor does it need to blindly detect SCI of different formats. The terminal only needs to detect whether there is first-level SCI at the fixed PSCCH time-frequency resource position. PSCCH may exist in each subchannel in each time slot, that is, the time domain starting position of a PSCCH is the second symbol for SL transmission in each time slot, the length is 2 or 3 symbols (determined by the resource pool configuration information), the frequency domain position is the smallest PRB index of each subchannel, the length is at least 10 PRBs (determined by the resource pool configuration information) but does not exceed the size of the subchannel, as shown in Figure 5.
第一级SCI中的频域资源指示(frequency resource assignment)字段和时域资源指示(time resource assignment)字段分别用于指示传输PSSCH的频域和时域资源，资源预约时期(resource reservation period)字段用于指示周期预约传输PSSCH的资源，资源预约时期字段的取值是由网络设备配置的，或预配置的，或预定义的。例如，基站通过RRC信令指示资源预约时期的取值。其中，RRC信令是可以由高层参数s1资源预约时期1(sl-resourceteserveperiod1)确定。SL通信中，mode 2资源选择方式的发送端的传输资源不依赖于基站。发送端根据自身感知窗内感知的结果在资源选择窗口内自行选择传输资源进行通信。假设发送端在时隙n触发资源选择，具体的资源步骤如下，选择流程如图6所示。The frequency resource assignment field and the time resource assignment field in the first-level SCI are used to indicate the frequency domain and time domain resources for transmitting PSSCH, respectively. The resource reservation period field is used to indicate the resources for periodic reservation of PSSCH transmission. The value of the resource reservation period field is configured by the network device, or preconfigured, or predefined. For example, the base station indicates the value of the resource reservation period through RRC signaling. Among them, the RRC signaling can be determined by the high-level parameter s1 resource reservation period 1 (sl-resourceteserveperiod1). In SL communication, the transmission resources of the transmitter of mode 2 resource selection method do not depend on the base station. The transmitter selects the transmission resources for communication within the resource selection window according to the results of its own perception window. Assuming that the transmitter triggers resource selection in time slot n, the specific resource steps are as follows, and the selection process is shown in Figure 6.
步骤1：确定以一个时隙和LsubCH个连续子信道为单位的候选资源Rx,y，资源选择窗[n+T1,n+T2]，其中 由表1确定，μSL为配置的子载波间隔，T1的选择基于实现。T2min由高层配置，如果T2min小于剩余PDB(数据包的延时)，那么T2min≤T2≤PDB(数据包的延时)，T2的选择基于实现；否则T2等于剩余PDB。Step 1: Determine the candidate resources R x,y in units of one time slot and L subCH consecutive subchannels, and the resource selection window [n+T 1 ,n+T 2 ], where Determined by Table 1, μ SL is the configured subcarrier spacing, and T 1 is selected based on implementation. T 2min is configured by the higher layer, if T 2min is less than the remaining PDB (data packet delay), then T 2min ≤ T 2 ≤ PDB (data packet delay), and T 2 is selected based on implementation; otherwise T 2 is equal to the remaining PDB.
表1：与μSL的关系的示例
Table 1: Example of relationship with μ SL
步骤2：确定感知窗其中T0由高层参数配置，由表2确定。Step 2: Determine the perception window Where T 0 is configured by high-level parameters. Determined from Table 2.
表2：与μSL的关系的示例
Table 2: Example of relationship with μ SL
步骤3：确定参考信号接收功率RSRP的门限值Th(pi,pj)，RSRP的门限值和待发送数据的prioTX，和接收到的SCI所指示的优先级prioRX有关，Th(pi,pj)具体为资源池配置的RSRP门限值集合中的第prioRX+(prioTX-1)*8个门限值。Step 3: Determine the threshold value Th( pi , pj ) of the reference signal received power RSRP. The RSRP threshold value is related to the prio TX of the data to be sent and the priority prio RX indicated by the received SCI. Th( pi , pj ) is specifically the prio RX +(prio TX -1)*8th threshold value in the RSRP threshold value set configured in the resource pool.
步骤4：初始化可用资源集合SA，包括资源选择窗中所有时频资源。Step 4: Initialize the available resource set S A , including all time-frequency resources in the resource selection window.
步骤5：从SA排除以下时频资源：感知窗中未感知的时隙(发送的时隙)所对应的资源池配置的全部周期资源预约的时隙。在步骤5中，如果SA排除的时频资源少于资源选择窗总资源的X％，重新执行步骤4的初始化。Step 5: Exclude the following time-frequency resources from SA : the time slots of all periodic resource reservations configured in the resource pool corresponding to the unperceived time slots (transmitted time slots) in the perception window. In step 5, if the time-frequency resources excluded by SA are less than X% of the total resources in the resource selection window, re-execute the initialization of step 4.
步骤6：继续从SA排除以下时频资源：接收的第一级SCI译码成功，且该接收的第一级SCI所预约的时频资源的PSSCH解调参考信号(demodulation reference signal，DMRS)进行RSRP测量的结果高于步骤3确定RSRP门限，且该接收的第一级SCI所预约的时频资源在资源选择窗内的，包括第一级SCI指示的重传资源和周期预约的资源。Step 6: Continue to exclude the following time-frequency resources from SA : the decoding of the received first-level SCI is successful, and the result of RSRP measurement of the PSSCH demodulation reference signal (DMRS) of the time-frequency resources reserved by the received first-level SCI is higher than the RSRP threshold determined in step 3, and the time-frequency resources reserved by the received first-level SCI are within the resource selection window, including the retransmission resources indicated by the first-level SCI and the periodically reserved resources.
步骤7：如果SA中剩余的资源少于资源选择窗总资源的X％，X％的取值由资源池配置并与prioTX有关，则通过提升步骤3所确定RSRP门限的方式(每次提升3dB)，直至满足SA中剩余的资源不小于资源选择窗总资源的X％，继续执行步骤4。Step 7: If the remaining resources in SA are less than X% of the total resources in the resource selection window, where the value of X% is configured by the resource pool and is related to prio TX , then the RSRP threshold determined in step 3 is increased by 3 dB each time until the remaining resources in SA are not less than X% of the total resources in the resource selection window, and step 4 is continued.
将SA上报到高层(MAC层)。Report SA to the higher layer (MAC layer).
在SA中随机选择时频资源(r0,r1,r2,…)用于发送数据，在发送之前对(r0,r1,r2,…)进行资源重评估，重评估后，从SA中选择的资源(r′0,r′1,r′2,…)进行抢占检测。A time-frequency resource (r 0 , r 1 , r 2 , …) is randomly selected in SA for sending data. Before sending, a resource re-evaluation is performed on (r 0 , r 1 , r 2 , …). After the re-evaluation, a preemption detection is performed on the resource (r′ 0 , r′ 1 , r′ 2 , …) selected from SA .
用户在至少时隙时刻进行资源重评估和抢占检测，UE可以基于实现在时隙m-T3前后额外触发进行资源重评估和/或抢占检测。确定(r0,r1,r2,…)和(r′0,r′1,r′2,…)是否需要被排除的方式和步骤7相同，且满足下列条件之一：The user is in at least time slot The UE can perform resource re-evaluation and preemption detection based on the additional triggering before and after the time slot m-T3. The method of determining whether (r 0 , r 1 , r 2 , …) and (r′ 0 , r′ 1 , r′ 2 , …) need to be excluded is the same as step 7, and one of the following conditions is met:
1)提供s1抢先使能(’sl-PreemptionEnable’)参数并配置为使能，且prioTX＞prioRX；1) Provide the s1 preemption enable ('sl-PreemptionEnable') parameter and configure it to enable, and prio TX > prio RX ;
2)提供s1抢先使能(’sl-PreemptionEnable’)参数并不配置为使能，且满足priopre＞prioRX和prioTX＞priopre。其中priopre由高层配置。 2) The s1 preemption enable ('sl-PreemptionEnable') parameter is not configured to be enabled, and prio pre > prio RX and prio TX > prio pre are satisfied. prio pre is configured by the higher layer.
如果(r0,r1,r2,…)和(r′0,r′1,r′2,…)中的ri和/或r′i不属于SA(即ri和r′i分别在重评估和/或抢占检测时被排除)，则对ri和/或r′i进行重新选择。其中，时隙m为下一个要发送的时隙，即时隙m属于(r0,r1,r2,…)和(r′0,r′1,r′2,…)。If ri and/or r′ i in (r 0 ,r 1 ,r 2 ,…) and (r′ 0 ,r′ 1 ,r′ 2 ,…) do not belong to SA (i.e., ri and r′ i are excluded during re-evaluation and/or preemption detection, respectively), then ri and/or r′ i are reselected. Wherein, time slot m is the next time slot to be sent, i.e., time slot m belongs to (r 0 ,r 1 ,r 2 ,…) and (r′ 0 ,r′ 1 ,r′ 2 ,…).
在5G NR通信架构中，为了便利基站与终端之间的下行通信，通常需要对下行的无线信道进行探测，主要方式就是基站下发CSI-RS，UE通过接收到的RS对无线信道进行测量和评估，并把测量结果上报给网络，在后续传输中，网络可以依据这些测量结果为后续的下行传输设置合适的发送参数。NR Uu口的CSI-RS最多支持32个不同的天线端口，每个天线端口都是一个需要探测的信道。在时频资源占用上，频域上的一个资源块及时域上的一个时隙内，单端口的CSI-RS只占用一个资源单元RE。通常来说，多少个端口的CSI-RS复用在一个RB或者时隙内，就会占用多少个RE。复用方式可以是码域复用、频域复用、时域复用。CSI-RS可以配置为周期性发送，半持续发送或者非周期性发送，支持单播、组播和广播发送。目前，第一频率范围(frequency range 1，FR1)的SL CSI-RS基于R15Uu口的CSI-RS设计，SL CSI-RS配置由发送端选择，并通过PC5-RRC配置提供给接收端。SL CSI-RS配置包括SL CSI-RS的资源映射模式和天线端口数。在NR V2X中，PRB中SL CSI-RS的资源映射基于NR Uu中的CSI-RS资源映射模式，其最多支持2个天线端口(如NR V2X中SL在PSSCH中最多可以支持两个流)，频域密度为1，即每个资源块RB上配置一个CSI-RS。In the 5G NR communication architecture, in order to facilitate the downlink communication between the base station and the terminal, it is usually necessary to detect the downlink wireless channel. The main method is that the base station sends CSI-RS. The UE measures and evaluates the wireless channel through the received RS and reports the measurement results to the network. In subsequent transmissions, the network can set appropriate transmission parameters for subsequent downlink transmissions based on these measurement results. The CSI-RS of the NR Uu port supports up to 32 different antenna ports, and each antenna port is a channel that needs to be detected. In terms of time-frequency resource occupancy, a single-port CSI-RS occupies only one resource unit RE in a resource block in the frequency domain and a time slot in the time domain. Generally speaking, the number of REs occupied by the CSI-RS of the number of ports multiplexed in one RB or time slot. The multiplexing method can be code domain multiplexing, frequency domain multiplexing, and time domain multiplexing. CSI-RS can be configured for periodic transmission, semi-continuous transmission, or non-periodic transmission, and supports unicast, multicast, and broadcast transmission. Currently, the SL CSI-RS of the first frequency range (frequency range 1, FR1) is designed based on the CSI-RS of the R15Uu port. The SL CSI-RS configuration is selected by the transmitter and provided to the receiver through the PC5-RRC configuration. The SL CSI-RS configuration includes the resource mapping mode and the number of antenna ports of the SL CSI-RS. In NR V2X, the resource mapping of the SL CSI-RS in the PRB is based on the CSI-RS resource mapping mode in NR Uu, which supports up to 2 antenna ports (such as SL in NR V2X can support up to two streams in PSSCH), and the frequency domain density is 1, that is, one CSI-RS is configured on each resource block RB.
图7给出了SL的时隙结构示意，其包括自动增益控制(automatic gain control，AGC)、PSCCH、PSSCH、DMRS、GAP(guard period)等。SL CSI-RS仅支持单播传输，并且在发送时隙的PSSCH区域随数据一起发送。同时，其不在包含PSCCH、第二级SCI或PSSCH DMRS的符号上传输。PSSCH中的每个PRB对SL CSI-RS使用相同的模式。Figure 7 shows the time slot structure of SL, which includes automatic gain control (AGC), PSCCH, PSSCH, DMRS, GAP (guard period), etc. SL CSI-RS only supports unicast transmission and is sent with data in the PSSCH area of the transmit time slot. At the same time, it is not transmitted on symbols containing PSCCH, second-level SCI or PSSCH DMRS. Each PRB in PSSCH uses the same pattern for SL CSI-RS.
需要说明的是，图7示出的时隙结构中各个信息占用的符号数量仅作为示例性示出，AGC、PSCCH、PSSCH和GAP占用的符号的数量，可以是第二终端确定的、网络设备配置的、预配置的或者协议预定义的，本申请不做具体限定。It should be noted that the number of symbols occupied by each information in the time slot structure shown in Figure 7 is only shown as an example. The number of symbols occupied by AGC, PSCCH, PSSCH and GAP can be determined by the second terminal, configured by the network device, pre-configured or pre-defined by the protocol, and this application does not make any specific limitations.
SL CSI-RS的传输时频资源等信息主要由第一级SCI指示，和LTE V2X中的SCI单级传输不同，NR V2X中的SCI分两级传输。引入第二级SCI使得SCI设计更加灵活，支持NR V2X中的单播、组播和广播传输，而LTE V2X仅支持广播。两级SCI的主要优势有：The transmission time and frequency resources of SL CSI-RS are mainly indicated by the first-level SCI. Unlike the single-level transmission of SCI in LTE V2X, SCI in NR V2X is transmitted in two levels. The introduction of the second-level SCI makes the SCI design more flexible, supporting unicast, multicast and broadcast transmission in NR V2X, while LTE V2X only supports broadcast. The main advantages of two-level SCI are:
1)第一级SCI具有与传输类型无关的固定大小，避免接收端用户的盲检；1) The first-level SCI has a fixed size that is independent of the transmission type, avoiding blind detection by the receiving end user;
2)第一级SCI在子信道内的已知可能位置上承载在PSCCH中；2) The first level SCI is carried in the PSCCH at a known possible position within the subchannel;
3)第一级SCI指示PSSCH中承载的第二级SCI的资源；3) The first-level SCI indicates the resources of the second-level SCI carried in the PSSCH;
4)具有取决于传输类型的不同有效载荷大小的第二级SCI。NR V2X中的两级SCI降低了SCI解码的复杂性，不仅适用于发送端，而且还适用于只需要检测解码第一级SCI就可以知道接收端保留了哪些资源的感知终端。4) A second level SCI with different payload sizes depending on the transmission type. The two-level SCI in NR V2X reduces the complexity of SCI decoding, not only for the transmitter, but also for the perception terminal that only needs to detect and decode the first level SCI to know which resources are reserved by the receiver.
NR V2X中的第一级SCI承载在PSCCH上，第二级SCI承载在相应的PSSCH上。PSCCH携带包含与PSSCH关联的第二级SCI控制信息的第一级SCI。第一级SCI指示承载传输块(transport block，TB)当前(重传)传输的PSSCH的频率资源，以及为TB的最多两次再重传预留的资源。如果UE为半静态PSSCH预留资源，则第一级SCI也指示资源预留周期。此外，第一级SCI包括关联的PSSCH的优先级，以及第二级SCI的格式和大小。第一级SCI还指示关联的PSSCH中所承载的数据净荷的调制编码方案(modulation and coding scheme，MCS)。为了支持不同的信道条件，NR V2X中与PSSCH关联的DMRS可以承载在PSSCH时隙内的不同符号上。在资源池中，PSSCH DMRS可以(预)配置多个时间图案，第一级SCI指示关联的PSSCH使用的具体时间图案。第一级SCI还提供PSSCH DMRS的端口数，可以等于一个或两个，其表示PSSCH中支持的层数(即数据流的数量)。因此，通过利用多个发射和接收天线，在NR V2X SL中的PSSCH中，最多可以发送两个数据流。The first-level SCI in NR V2X is carried on the PSCCH and the second-level SCI is carried on the corresponding PSSCH. The PSCCH carries the first-level SCI containing the second-level SCI control information associated with the PSSCH. The first-level SCI indicates the frequency resources of the PSSCH carrying the current (re)transmission of the transport block (TB) and the resources reserved for up to two retransmissions of the TB. If the UE reserves resources for semi-static PSSCH, the first-level SCI also indicates the resource reservation period. In addition, the first-level SCI includes the priority of the associated PSSCH, and the format and size of the second-level SCI. The first-level SCI also indicates the modulation and coding scheme (MCS) of the data payload carried in the associated PSSCH. In order to support different channel conditions, the DMRS associated with the PSSCH in NR V2X can be carried on different symbols within the PSSCH time slot. In the resource pool, the PSSCH DMRS can be (pre)configured with multiple time patterns, and the first-level SCI indicates the specific time pattern used by the associated PSSCH. The first level SCI also provides the number of ports for the PSSCH DMRS, which can be equal to one or two, which represents the number of layers (i.e., the number of data streams) supported in the PSSCH. Therefore, by utilizing multiple transmit and receive antennas, up to two data streams can be sent in the PSSCH in the NR V2X SL.
将SCI分成两级，允许非传输的接收终端的其他终端仅解码第一级SCI，用于信道感知，即用于确定由其他传输保留的资源。另一方面，第二级SCI提供给需要传输的接收终端所需的附加控制信息。PSSCH携带第二级SCI和由TB组成的数据净荷，第二级SCI携带用于解码PSSCH和支持HARQ反馈和CSI报告的信息，指示传输的第1层源身份标识(identifier，ID)和目的ID，代表发送端和TB的预期接收者(接收端)的物理层标识符，层1源ID用于允许接收端知道发送端的身份，进而确定HARQ反馈的PSFCH。第二级SCI还携带一个1比特的新数据指示符，用于指定PSSCH中发送的TB是对应于新数据传输还是重传。此外，HARQ进程ID也包括在第二级SCI中，以便识别TB。第二级SCI也 指示PSSCH的HARQ反馈是否启用或禁用。The SCI is divided into two levels, allowing other terminals that are not transmitting receiving terminals to decode only the first level SCI for channel sensing, that is, for determining the resources reserved by other transmissions. On the other hand, the second level SCI provides additional control information required by the receiving terminal that needs to transmit. The PSSCH carries the second level SCI and a data payload consisting of TBs. The second level SCI carries information used to decode the PSSCH and support HARQ feedback and CSI reporting, indicating the layer 1 source identity (identifier, ID) and destination ID of the transmission, representing the physical layer identifier of the transmitter and the intended recipient (receiver) of the TB. The layer 1 source ID is used to allow the receiving end to know the identity of the transmitter and then determine the PSFCH of the HARQ feedback. The second level SCI also carries a 1-bit new data indicator to specify whether the TB sent in the PSSCH corresponds to a new data transmission or a retransmission. In addition, the HARQ process ID is also included in the second level SCI to identify the TB. The second level SCI also Indicates whether HARQ feedback for PSSCH is enabled or disabled.
基于SL CSI-RS两级SCI指示，FR1SL CSI-RS工作流程如下，Based on the SL CSI-RS two-level SCI indication, the FR1SL CSI-RS workflow is as follows:
①发送端发送第一级SCI中的CSI请求和SL CSI-RS，触发单播链路的接收端反馈CSI报告。① The transmitter sends the CSI request and SL CSI-RS in the first-level SCI, triggering the receiver of the unicast link to feedback the CSI report.
发送端可以配置接收端的非周期CSI上报。在一个子帧或时隙中，发送端首先发送SCI，其中包含了接收该SL CSI-RS的用户标识、SL CSI-RS传输信息，包括SL CSI-RS的时频资源信息、资源标识、扰码标识等。SCI发送完成后，SL CSI-RS依据指示在子帧或时隙的剩余部分发送。SCI中还可包含时间偏移量，用于指示接收端在特定子帧或时隙中发送CSI反馈信息。The transmitter can configure the receiver's non-periodic CSI reporting. In a subframe or time slot, the transmitter first sends the SCI, which contains the user ID of the SL CSI-RS, the SL CSI-RS transmission information, including the time-frequency resource information, resource ID, scrambling code ID, etc. of the SL CSI-RS. After the SCI is sent, the SL CSI-RS is sent in the remaining part of the subframe or time slot according to the instruction. The SCI can also include a time offset to instruct the receiver to send CSI feedback information in a specific subframe or time slot.
②接收端基于发送端发送的SL CSI-RS测量CSI，并且通过接收端发送给发送端的PSSCH反馈，接收端的CSI反馈携带在MAC CE中。为了避免CSI超时，希望接收端在最大时间内反馈CSI报告，延迟界限由发送端确定，并通过PC5-RRC信令向接收端发送信号。② The receiver measures the CSI based on the SL CSI-RS sent by the transmitter, and feeds back the CSI through the PSSCH sent by the receiver to the transmitter. The CSI feedback of the receiver is carried in the MAC CE. In order to avoid CSI timeout, the receiver is expected to feed back the CSI report within the maximum time. The delay limit is determined by the transmitter and sent to the receiver through PC5-RRC signaling.
在FR2毫米波频段的SL分布式***中，发送端和接收端之间可能会由于突然的信道波动、意外的障碍物中断、终端旋转等而发生波束失准，为使能FR2SL分布式***中毫米波通信，考虑基于SL CSI-RS的波束训练以实现收发端波束对准。由上可以看出，FR1中SL CSI-RS随数据在PSSCH中单播发送，由于其受限于随路业务数据本身的发送，无法进行独立的周期性或非周期性发送以实现波束训练和校准。即使数据是周期性数据，但业务数据周期和SL CSI-RS发送周期也不是同一概念，因此目前仅存在随路的非周期性SL CSI-RS，这对FR2毫米波通信中基于SL CSI-RS的波束训练提出了挑战。In the SL distributed system of the FR2 millimeter wave frequency band, beam misalignment may occur between the transmitter and the receiver due to sudden channel fluctuations, unexpected obstacle interruptions, terminal rotation, etc. In order to enable millimeter wave communication in the FR2SL distributed system, beam training based on SL CSI-RS is considered to achieve beam alignment between the transmitter and the receiver. As can be seen from the above, the SL CSI-RS in FR1 is unicasted with the data in the PSSCH. Since it is limited by the transmission of the accompanying service data itself, it cannot be independently sent periodically or non-periodically to achieve beam training and calibration. Even if the data is periodic data, the service data period and the SL CSI-RS transmission period are not the same concept. Therefore, there is currently only non-periodic SL CSI-RS with the channel, which poses a challenge to the beam training based on SL CSI-RS in FR2 millimeter wave communication.
NR Uu接口的波束管理是基于极端灵活的CSI-RS框架以及基站强大的MIMO能力实现的。对于SL通信，与CSI-RS对应的参考信号是SL CSI-RS。SL CSI-RS是SL专有的参考信号，其基本功能是对SL的信道进行测量，用以计算信道的秩指示(rank indicator，RI)和信道质量指示(channel quality indicator，CQI)，帮助发送端确定发送方式、MCS以及码率等参数。与Uu口的CSI-RS类似，FR2频段上SL CSI-RS也可以实现其他功能，如作为SL中波束训练的参考信号。然而，考虑到R16中FR1SL CSI-RS的时隙结构和SL***的分布式特征以及终端能力问题，SL中终端到终端(UE-to-UE)波束管理应进行适当改变，尤其是发送波束训练过程需要高效地进行。这对FR2频段上终端的SL CSI-RS的发送方法提出了新的需求。The beam management of the NR Uu interface is based on the extremely flexible CSI-RS framework and the powerful MIMO capability of the base station. For SL communication, the reference signal corresponding to CSI-RS is SL CSI-RS. SL CSI-RS is a reference signal proprietary to SL. Its basic function is to measure the channel of SL to calculate the rank indicator (RI) and channel quality indicator (CQI) of the channel, and to help the transmitter determine the parameters such as the transmission mode, MCS and code rate. Similar to the CSI-RS of the Uu interface, the SL CSI-RS on the FR2 band can also realize other functions, such as serving as a reference signal for beam training in SL. However, considering the time slot structure of the FR1 SL CSI-RS in R16, the distributed characteristics of the SL system and the terminal capability issues, the terminal-to-terminal (UE-to-UE) beam management in SL should be appropriately changed, especially the transmission beam training process needs to be carried out efficiently. This puts forward new requirements for the transmission method of the SL CSI-RS of the terminal on the FR2 band.
波束管理是5G NR针对FR2波束成形提出的重要技术，基站和终端获取并维护用于发送和接收的波束集合的过程，进而以合理的波束对实现高增益的通信。目前FR2的波束管理流程是针对基站与终端设计的，即先由基站进行粗波束扫描，终端进行接收。然而，对于完全分布式的SL mode 2的通信***，如V2X等场景中，发送端和接收端均为终端，5G NR中的波束管理流程不再适用，相关技术方案尚无标准支撑。Beam management is an important technology proposed by 5G NR for FR2 beamforming. It is the process by which base stations and terminals obtain and maintain beam sets for sending and receiving, and then achieve high-gain communication with reasonable beam pairs. The current FR2 beam management process is designed for base stations and terminals, that is, the base station first performs coarse beam scanning and the terminal receives. However, for fully distributed SL mode 2 communication systems, such as V2X and other scenarios, both the transmitter and the receiver are terminals, and the beam management process in 5G NR is no longer applicable, and there is no standard support for related technical solutions.
在一个实施例中，本申请实施例提供的方法可以适用于V2X分布式***中FR2频段上的波束训练的场景，分布式***中发送端波束扫描的场景如图8所示，场景中的重要元素解释如下：In one embodiment, the method provided in the embodiment of the present application can be applied to the scenario of beam training on the FR2 frequency band in a V2X distributed system. The scenario of beam scanning at the transmitting end in the distributed system is shown in FIG8 . The important elements in the scenario are explained as follows:
①发送端UE：V2X SL中的信息发送实体，图中以车辆UE为例。① Transmitter UE: The information sending entity in V2X SL, taking vehicle UE as an example in the figure.
②接收端UE：V2X SL中的信息接收实体，图中以车辆UE为例。② Receiving UE: The information receiving entity in V2X SL, taking the vehicle UE as an example in the figure.
③发送波束：指发送端UE在某一天线端口上的具有方向性的辐射模式。图中标出了4个方向上的发送波束示意，各波束周期性辐射进行波束训练，以实现与接收端UE波束对准。③ Transmit beam: refers to the directional radiation pattern of the transmitting UE on a certain antenna port. The figure shows the transmit beams in four directions. Each beam radiates periodically for beam training to achieve beam alignment with the receiving UE.
因为在SL***中各个终端都是对等关系，没有基站统一协调调度，终端是否接收或者发送无法在分布式***中确定。考虑到SL的分布式特征，UE-to-UE波束管理缺少用于波束训练的参考信号。同时，FR1中SL CSI-RS必须随数据在PSSCH中单播发送，由于其受限于随路业务数据本身的发送，无法进行独立的周期性或非周期性发送以实现波束训练和校准，更进一步，即使数据是周期性数据，但业务周期和SL CSI-RS发送周期不是同一概念，因此目前仅存在随路的非周期性参考信号SL CSI-RS，这导致FR2频段上基于SL CSI-RS的波束训练无法进行。Because each terminal in the SL system is in a peer-to-peer relationship and there is no unified coordination and scheduling by the base station, whether the terminal receives or sends cannot be determined in the distributed system. Considering the distributed characteristics of SL, UE-to-UE beam management lacks reference signals for beam training. At the same time, the SL CSI-RS in FR1 must be unicasted with the data in the PSSCH. Since it is limited by the transmission of the accompanying service data itself, it cannot be independently sent periodically or non-periodically to achieve beam training and calibration. Furthermore, even if the data is periodic data, the service period and the SL CSI-RS transmission period are not the same concept. Therefore, there is currently only an accompanying non-periodic reference signal SL CSI-RS, which makes it impossible to perform beam training based on SL CSI-RS on the FR2 frequency band.
鉴于此，本申请实施例提供一种资源指示方法。该方法中，第二终端可以向第一终端发送PSCCH。该PSCCH中可以承载SCI，该SCI可以用于指示PSSCH的时频资源。第二终端可以向第一终端发送侧行参考信号和PSSCH。该PSSCH可以只承载MAC CE。该方法中，PSCCH、PSSCH和侧行参考信号在同一个时隙中发送。基于该方法，考虑侧行参考信号和PSSCH随路数据的分离结构，在PSSCH中仅填充MAC CE和侧行参考信号的时隙结构，如图9所示。上述时隙结构，可用于FR2频段上基于SL CSI-RS的发送波束训练，其保证了PSSCH中侧行参考信号和随路数据剥离的同时，避免了单独的(standalone)侧行参考信号的发送，同时保证了与现有SL时隙结构的完整性和一致性。 In view of this, an embodiment of the present application provides a resource indication method. In this method, the second terminal can send PSCCH to the first terminal. The PSCCH can carry SCI, and the SCI can be used to indicate the time-frequency resources of PSSCH. The second terminal can send a side reference signal and PSSCH to the first terminal. The PSSCH can only carry MAC CE. In this method, PSCCH, PSSCH and side reference signal are sent in the same time slot. Based on this method, considering the separate structure of the side reference signal and the PSSCH accompanying data, the time slot structure of only MAC CE and side reference signal is filled in PSSCH, as shown in Figure 9. The above-mentioned time slot structure can be used for transmission beam training based on SL CSI-RS on the FR2 frequency band, which ensures the stripping of the side reference signal and the accompanying data in the PSSCH, while avoiding the transmission of a separate (standalone) side reference signal, while ensuring the integrity and consistency with the existing SL time slot structure.
可以理解的是，本申请的实施例中，PSSCH也可以只承载所述MAC CE和第二级SCI；PSCCH中承载的SCI用于指示PSSCH的时频资源；PSSCH承载的第二级SCI用于指示PSSCH的译码。在不同的***和不同的场景中，PSSCH承载的具体内容可能有所区别，本申请的实施例对此并不做限定。It is understandable that in the embodiments of the present application, the PSSCH may also only carry the MAC CE and the second-level SCI; the SCI carried in the PSCCH is used to indicate the time-frequency resources of the PSSCH; the second-level SCI carried by the PSSCH is used to indicate the decoding of the PSSCH. In different systems and different scenarios, the specific content carried by the PSSCH may be different, and the embodiments of the present application do not limit this.
参阅图10，为本申请实施例提供的一种资源指示方法的示例性流程图，可以包括以下操作。图10所示的实施例中，第一终端可以是如图1A所示的终端设备101，第二终端可以是如图1A所示的终端设备102。Referring to Fig. 10, an exemplary flow chart of a resource indication method provided in an embodiment of the present application may include the following operations. In the embodiment shown in Fig. 10, the first terminal may be the terminal device 101 shown in Fig. 1A, and the second terminal may be the terminal device 102 shown in Fig. 1A.
S1001：第二终端向第一终端发送PSCCH。S1001: The second terminal sends a PSCCH to the first terminal.
相应的，第一终端接收来自第二终端的PSCCH。Correspondingly, the first terminal receives the PSCCH from the second terminal.
其中，上述PSCCH中可以承载SCI，如第一级SCI。该SCI可以用于指示PSSCH的时频资源。可选的，该SCI还可以指示第二级SCI的时频资源信息。图10所示的实施例中，第二终端在一个载波上最多有1个激活的BWP，第一终端和第二终端使用相同的BWP。Among them, the above-mentioned PSCCH can carry SCI, such as the first-level SCI. The SCI can be used to indicate the time-frequency resources of the PSSCH. Optionally, the SCI can also indicate the time-frequency resource information of the second-level SCI. In the embodiment shown in Figure 10, the second terminal has at most one activated BWP on one carrier, and the first terminal and the second terminal use the same BWP.
其中，第二终端可以通过SCI中的频域资源指示(frequency resource assignment)字段指示PSSCH的频域资源。第二终端可以通过SCI中的时域资源指示(time resource assignment)字段和资源预约时期(resource reservation period)字段指示PSSCH的时域资源。The second terminal may indicate the frequency domain resources of the PSSCH through the frequency domain resource indication (frequency resource assignment) field in the SCI. The second terminal may indicate the time domain resources of the PSSCH through the time domain resource indication (time resource assignment) field and the resource reservation period (reservation period) field in the SCI.
S1002：第二终端向第一终端发送侧行参考信号和PSSCH。S1002: The second terminal sends a sidelink reference signal and a PSSCH to the first terminal.
相应的，第二终端接收来自第一终端的侧行参考信号和PSSCH。Correspondingly, the second terminal receives the sidelink reference signal and the PSSCH from the first terminal.
在S1002中，PSSCH中可以只承载MAC CE。可以理解的是，侧行参考信号可以是SL CSI-RS或DMRS等侧行信号。In S1002, PSSCH may only carry MAC CE. It is understood that the side reference signal may be a side reference signal such as SL CSI-RS or DMRS.
第二终端向第一终端发送的PSCCH和PSSCH可以如图9所示。图9所示的时隙结构中，AGC、PSCCH和PSSCH和侧行参考信号在同一个时隙中发送。图9所示的GAP可以是两个发送时隙之间的GAP。基于图9示出的时隙结构，可以在PSSCH中仅填充MAC CE和侧行参考信号，其保证了PSSCH中侧行参考信号和随路数据剥离的同时，避免了standalone的侧行参考信号的发送。The PSCCH and PSSCH sent by the second terminal to the first terminal may be as shown in FIG9. In the time slot structure shown in FIG9, AGC, PSCCH, PSSCH and the side reference signal are sent in the same time slot. The GAP shown in FIG9 may be a GAP between two transmission time slots. Based on the time slot structure shown in FIG9, only MAC CE and the side reference signal may be filled in the PSSCH, which ensures that the side reference signal and the accompanying data in the PSSCH are stripped while avoiding the transmission of the standalone side reference signal.
在一种可能的实施例中，图10所示的实施例还可以包括以下操作S1000。In a possible embodiment, the embodiment shown in FIG. 10 may further include the following operation S1000 .
S1000：第二终端选择SL CSI-RS的时域资源集合。S1000: The second terminal selects the time domain resource set of SL CSI-RS.
该时域资源集合中可以包含多个时隙，相邻的两个时隙之间的间隔相同。需要说明的是，相邻的两个时隙可以是指逻辑上连续的两个时隙。需要说明的是，在S1000中第二终端在选择时域资源集合时，可以参照图6所示的实施例实施，此处不再赘述。The time domain resource set may include multiple time slots, and the interval between two adjacent time slots is the same. It should be noted that two adjacent time slots may refer to two logically continuous time slots. It should be noted that when the second terminal selects the time domain resource set in S1000, it can be implemented with reference to the embodiment shown in Figure 6, which will not be repeated here.
在一种可能的实施例中，上述SCI还可以用于指示侧行参考信号的时频资源。例如，SCI指示侧行参考信号的时域资源集合。该时域资源集合可以是S1000中第二终端选择的时域资源集合。以下，对本申请实施例中SCI指示侧行参考信号的时域资源集合的情况进行说明。下文中，以侧行参考信号为SL CSI RS为例进行说明。In a possible embodiment, the above-mentioned SCI can also be used to indicate the time-frequency resources of the side reference signal. For example, the SCI indicates the time domain resource set of the side reference signal. The time domain resource set can be the time domain resource set selected by the second terminal in S1000. The following is an explanation of the situation in which the SCI indicates the time domain resource set of the side reference signal in the embodiment of the present application. In the following, the side reference signal is SL CSI RS as an example for explanation.
情况1：SCI中资源预约时期(resource reservation period)字段的参数值Nrsv_period指示SL CSI-RS的周期。Case 1: The parameter value N rsv_period of the resource reservation period field in the SCI indicates the period of the SL CSI-RS.
相关技术中，SCI中资源预约时期(resource reservation period)字段的参数值Nrsv_period用于指示PSSCH携带的业务数据的周期。相关技术中PSSCH中不存在业务数据的情况下，该阈值默认为0。本申请实施例中在对SL CSI-RS所在时隙进行资源选择时，可设计使用Nrsv_period指示SL CSI-RS的周期，如图11所示。Nrsv_period用于指示SL CSI-RS所在发送时隙的周期。In the related art, the parameter value N rsv_period of the resource reservation period field in the SCI is used to indicate the period of the service data carried by the PSSCH. In the related art, when there is no service data in the PSSCH, the threshold value defaults to 0. In the embodiment of the present application, when selecting resources for the time slot where the SL CSI-RS is located, it can be designed to use N rsv_period to indicate the period of the SL CSI-RS, as shown in Figure 11. N rsv_period is used to indicate the period of the transmission time slot where the SL CSI-RS is located.
举例来说，假设第二终端在时隙n上发送PSCCH，该PSCCH可以承载SCI。该SCI可以指示PSSCH的周期或者说SL CSI-RS的周期Nrsv_period。第二终端在时隙n上发送PSSCH和SL CSI-RS。则第二终端在时隙n+k*Nrsv_period(k＝0,1,2,…)上均有携带SL CSI-RS的发送，即预约了SL资源池中的周期性的发送时隙，分布式SL***中的其他终端感知(sensing)后会在此预约资源上进行避让。可以看出，通过使用SCI中Nrsv_period字段指示的资源选择方式保证了SL CSI-RS所在时隙的周期性发送，进而用于终端的波束训练过程。For example, assume that the second terminal sends PSCCH in time slot n, and the PSCCH can carry SCI. The SCI can indicate the period of PSSCH or the period N rsv_period of SL CSI-RS. The second terminal sends PSSCH and SL CSI-RS in time slot n. Then the second terminal carries SL CSI-RS in time slot n+k*N rsv_period (k＝0,1,2,…), that is, it reserves the periodic transmission time slot in the SL resource pool, and other terminals in the distributed SL system will avoid this reserved resource after sensing. It can be seen that the resource selection method indicated by the N rsv_period field in the SCI ensures the periodic transmission of the time slot where the SL CSI-RS is located, which is then used for the beam training process of the terminal.
可以理解的是，上文中Nrsv_period的值可以是网络设备配置的、第一终端配置给第二终端的或者第二终端自行确定的，本申请不做具体限定。It can be understood that the value of N rsv_period in the above text can be configured by the network device, configured by the first terminal to the second terminal, or determined by the second terminal itself, and this application does not make any specific limitation.
情况2：SCI指示时域资源信息，时域资源信息包括Q个时隙偏移量tq。Case 2: SCI indicates time domain resource information, and the time domain resource information includes Q time slot offsets t q .
例如，可以通过SCI中的时域资源指示(time resource assignment)字段的参数值TRIV指示Q个时隙偏移量tq。其中，上述Q可以是大于或等于1的整数，如可以为2、3甚至更大的值。q可以取遍 1至Q的整数。该时域资源信息指示的SL CSI-RS的时隙包括时隙n和时隙n+tq。应理解，n可以是发送PSCCH的发送时隙的索引。For example, the parameter value TRIV of the time resource assignment field in the SCI may indicate Q time slot offsets tq . The Q may be an integer greater than or equal to 1, such as 2, 3 or even a larger value. An integer from 1 to Q. The time slots of the SL CSI-RS indicated by the time domain resource information include time slot n and time slot n+t q . It should be understood that n may be the index of the transmission time slot in which the PSCCH is transmitted.
在一个示例中，Q大于1的情况下，Q个时隙偏移量中第q个时隙偏移量tq是Q个时隙偏移量中第1个时隙偏移量t1的q倍。以Q等于2为例进行说明。TRIV可以指示2个时隙偏移量，分别为t1和t2。在情况2中，第二终端对SL CSI-RS所在时隙进行资源选择时，设计条件约束的t1和t2指示上述选择的时域资源集合，以实现SL CSI-RS所在时隙的周期性发送。其中，t2＝2*t1。In one example, when Q is greater than 1, the qth time slot offset tq among the Q time slot offsets is q times the 1st time slot offset t1 among the Q time slot offsets. Take Q equal to 2 as an example for explanation. TRIV can indicate 2 time slot offsets, which are t1 and t2 . In case 2, when the second terminal selects resources for the time slot where the SL CSI-RS is located, the design condition constraints t1 and t2 indicate the above selected time domain resource set to achieve periodic transmission of the time slot where the SL CSI-RS is located. Wherein, t2 = 2* t1 .
参阅图12，假设第二终端在时隙n上发送PSCCH、PSSCH和SL CSI-RS。其中，PSCCH中可以承载SCI，该SCI可以指示2个时隙偏移量，分别为t1和t2，t2＝2*t1，则第二终端在时隙n+t1和n+t2上均有SL CSI-RS的发送，即在时隙n预约了SL资源池中的n+t1和n+t2的发送时隙。由图12可以看出，SCI指示的相邻的两个时隙之间的间隔相同。不仅如此，在该示例中可以实现时隙的链式预约。举例来说，在时隙n+t1第二终端可以发送PSCCH、PSSCH和SL CSI-RS。其中，PSSCH中可以承载SCI，该SCI可以指示1个时隙偏移量t’1。换句话说，在时隙n+t1第二终端预约了SL资源池中n+t1+t’1的发送时隙，以此类推。t’1可以与t1可以相同。Referring to FIG. 12 , it is assumed that the second terminal sends PSCCH, PSSCH and SL CSI-RS in time slot n. Among them, PSCCH can carry SCI, and the SCI can indicate 2 time slot offsets, which are t 1 and t 2 respectively, t 2 =2*t 1 , then the second terminal sends SL CSI-RS in time slots n+t 1 and n+t 2 , that is, the transmission time slots n+t 1 and n+t 2 in the SL resource pool are reserved in time slot n. It can be seen from FIG. 12 that the intervals between two adjacent time slots indicated by SCI are the same. In addition, chain reservation of time slots can be realized in this example. For example, in time slot n+t 1, the second terminal can send PSCCH, PSSCH and SL CSI-RS. Among them, PSSCH can carry SCI, and the SCI can indicate 1 time slot offset t' 1 . In other words, in time slot n+t 1, the second terminal reserves the transmission time slot n+t 1 +t′ 1 in the SL resource pool, and so on. t′ 1 may be the same as t 1 .
需要说明的是，图12中SCI指示的时隙偏移量的数量仅作为示例性示出，实际上各个SCI指示的时隙偏移量的数量可以相同也可以不同。各个SCI指示的时隙偏移量的值所构成的SL CSI-RS的时隙集合中，相邻的两个时隙之间的间隔相同。It should be noted that the number of time slot offsets indicated by the SCI in FIG12 is only shown as an example. In fact, the number of time slot offsets indicated by each SCI may be the same or different. In the time slot set of the SL CSI-RS formed by the value of the time slot offset indicated by each SCI, the interval between two adjacent time slots is the same.
基于上述方案，实现SL CSI-RS所在时隙的均匀且周期性的资源选择。可以看出，通过上述情况2实现了SL CSI-RS所在时隙的周期性发送，用于终端的波束训练过程，分布式SL***中的其他终端感知后会在此预约资源上进行避让。Based on the above scheme, uniform and periodic resource selection is achieved for the time slot where the SL CSI-RS is located. It can be seen that the periodic transmission of the time slot where the SL CSI-RS is located is achieved through the above situation 2, which is used for the beam training process of the terminal. After sensing, other terminals in the distributed SL system will avoid this reserved resource.
另一个示例中，Q等于1的情况下，在时隙n+t1发送的SCI指示的时隙偏移量tq’与时隙偏移量tq相同。参阅图13，假设第二终端在时隙n上发送PSCCH、PSSCH和SL CSI-RS。其中，PSCCH中可以承载SCI，该SCI可以指示1个时隙偏移量t1，则第二终端在时隙n+t1上有SL CSI-RS的发送，即在时隙n预约了SL资源池中的n+t1的发送时隙。不仅如此，在该示例中可以实现时隙的链式预约。举例来说，在时隙n+t1第二终端可以发送PSCCH、PSSCH和SL CSI-RS。其中，PSSCH中可以承载SCI，该SCI可以指示1个时隙偏移量t’1。由于t’1＝t1，换句话说，在时隙n+t1第二终端预约了SL资源池中n+2*t1的发送时隙资源，以此类推，实现SL CSI-RS所在时隙的均匀且周期性的资源选择。可以看出，通过上述情况2实现了SL CSI-RS所在时隙的周期性发送，用于终端的波束训练过程，分布式SL***中的其他终端感知后会在此预约资源上进行避让。In another example, when Q is equal to 1, the time slot offset tq ' indicated by the SCI sent in time slot n+ t1 is the same as the time slot offset tq . Referring to FIG. 13, it is assumed that the second terminal sends PSCCH, PSSCH and SL CSI-RS in time slot n. Among them, the PSCCH can carry SCI, and the SCI can indicate 1 time slot offset t1 , then the second terminal has SL CSI-RS transmission in time slot n+ t1 , that is, the transmission time slot n+ t1 in the SL resource pool is reserved in time slot n. In addition, in this example, chain reservation of time slots can be realized. For example, the second terminal can send PSCCH, PSSCH and SL CSI-RS in time slot n+ t1 . Among them, the PSSCH can carry SCI, and the SCI can indicate 1 time slot offset t'1 . Since t' 1 = t 1 , in other words, in time slot n+t 1 , the second terminal reserves the transmission time slot resource of n+2*t 1 in the SL resource pool, and so on, to achieve uniform and periodic resource selection of the time slot where the SL CSI-RS is located. It can be seen that the periodic transmission of the time slot where the SL CSI-RS is located is achieved through the above situation 2, which is used for the beam training process of the terminal. After sensing, other terminals in the distributed SL system will avoid this reserved resource.
可以理解的是，tq的取值可以由高层参数s1最大预约值(’sl-MaxNumPerReserve’)参数确定。例如，当高层参数s1最大预约值(’sl-MaxNumPerReserve’)＝2(M＝1or 2)时，1≤t1≤31。高层参数s1最大预约值(’sl-MaxNumPerReserve’)＝3(M＝1or 2or 3)时，1≤t1≤30，t1＜t2≤31。It can be understood that the value of tq can be determined by the parameter of the upper layer parameter s1 maximum reservation value ('sl-MaxNumPerReserve'). For example, when the upper layer parameter s1 maximum reservation value ('sl-MaxNumPerReserve') = 2 (M = 1 or 2), 1≤t1≤31 . When the upper layer parameter s1 maximum reservation value ('sl-MaxNumPerReserve') = 3 (M = 1 or 2 or 3), 1≤t1≤30 , t1 ＜ t2≤31 .
上述确定tq的取值的方式可以通过如下指令实现：

The above method of determining the value of tq can be implemented by the following instructions:

基于上述图8～图13示出的实施例，第二终端可以在PSSCH上只承载MAC CE，实现SL CSI-RS与业务数据的剥离，并可以选择时域上均匀分布的时域资源集合，用来发送SL CSI-RS，并通过SCI指示该时域资源集合，从而实现SL CSI-RS所在时隙的均匀且周期性的资源选择，因此第二终端可以通过该时域资源集合向第一终端发送SL CSI-RS，用于波束训练，如第一终端和第二终端进行波束训练。Based on the embodiments shown in Figures 8 to 13 above, the second terminal can carry only MAC CE on the PSSCH to realize the separation of SL CSI-RS and business data, and can select a time domain resource set evenly distributed in the time domain to send the SL CSI-RS, and indicate the time domain resource set through SCI, thereby realizing uniform and periodic resource selection of the time slot where the SL CSI-RS is located. Therefore, the second terminal can send SL CSI-RS to the first terminal through the time domain resource set for beam training, such as the first terminal and the second terminal performing beam training.
本申请实施例还提供另一种时隙结构。参阅图14，考虑PSSCH承载SL CSI-RS和MAC CE的基础上，同时承载MAC PDU。可选的，MAC PDU中可以携带SL发现消息。该SL发现消息可以用于发现其他终端，如第一终端发现第二终端。The embodiment of the present application also provides another time slot structure. Referring to FIG. 14 , considering that PSSCH carries SL CSI-RS and MAC CE, it also carries MAC PDU. Optionally, MAC PDU can carry SL discovery message. The SL discovery message can be used to discover other terminals, such as a first terminal discovering a second terminal.
可以理解的是，本申请的实施例中，PSSCH也可以承载MAC CE，MAC PDU和第二级SCI，PSCCH中承载的SCI用于指示PSSCH的时频资源，PSSCH承载的第二级SCI用于指示PSSCH的译码。在不同的***和不同的场景中，PSSCH承载的具体内容可能有所区别，本申请的实施例对此并不做限定。It is understandable that in the embodiments of the present application, PSSCH can also carry MAC CE, MAC PDU and second-level SCI, the SCI carried in PSCCH is used to indicate the time-frequency resources of PSSCH, and the second-level SCI carried by PSSCH is used to indicate the decoding of PSSCH. In different systems and different scenarios, the specific content carried by PSSCH may be different, and the embodiments of the present application do not limit this.
基于上述时隙结构，本申请实施例还提供另一种资源指示方法。参阅图15，为本申请实施例提供的一种资源指示方法的示例性流程图，可以包括以下操作。Based on the above time slot structure, the embodiment of the present application also provides another resource indication method. Referring to FIG. 15 , which is an exemplary flow chart of a resource indication method provided in the embodiment of the present application, the method may include the following operations.
S1501：第二终端向第一终端发送PSCCH。S1501: The second terminal sends a PSCCH to the first terminal.
相应的，第一终端接收来自第二终端的PSCCH。Correspondingly, the first terminal receives the PSCCH from the second terminal.
其中，上述PSCCH可以承载SCI，如第一级SCI。该SCI可以用于指示PSSCH的时频资源，或者说指示SL CSI-RS的时频资源。可选的，该SCI还可以指示第二级SCI的时频资源所示。图15所示的实施例中，第二终端在一个载波上最多有1个激活的BWP，第二终端与第一终端使用相同的BWP。Among them, the above-mentioned PSCCH can carry SCI, such as the first-level SCI. The SCI can be used to indicate the time-frequency resources of the PSSCH, or the time-frequency resources of the SL CSI-RS. Optionally, the SCI can also indicate the time-frequency resources of the second-level SCI. In the embodiment shown in Figure 15, the second terminal has at most one activated BWP on one carrier, and the second terminal uses the same BWP as the first terminal.
其中，第二终端可以通过SCI中的频域资源指示(frequency resource assignment)字段指示PSSCH的频域资源。第二终端可以通过SCI中的时域资源指示(time resource assignment)字段和资源预约时期(resource reservation period)字段指示PSSCH的时域资源。The second terminal may indicate the frequency domain resources of the PSSCH through the frequency domain resource indication (frequency resource assignment) field in the SCI. The second terminal may indicate the time domain resources of the PSSCH through the time domain resource indication (time resource assignment) field and the resource reservation period (reservation period) field in the SCI.
S1502：第二终端向第一终端发送SL CSI-RS和PSSCH。S1502: The second terminal sends SL CSI-RS and PSSCH to the first terminal.
相应的，第二终端接收来自第一终端的侧行参考信号和PSSCH。Correspondingly, the second terminal receives the sidelink reference signal and the PSSCH from the first terminal.
在S1502中，PSCCH可以承载MAC PDU和MAC CE。第二终端向第一终端发送的PSCCH和PSSCH可以如图14所示。图14所示的时隙结构中，AGC、PSCCH和PSSCH和侧行参考信号可以在同一个时隙中发送。图14所示的GAP可以是两个发送时隙之间的GAP。In S1502, PSCCH can carry MAC PDU and MAC CE. PSCCH and PSSCH sent by the second terminal to the first terminal can be as shown in FIG14. In the time slot structure shown in FIG14, AGC, PSCCH and PSSCH and side reference signal can be sent in the same time slot. The GAP shown in FIG14 can be a GAP between two transmission time slots.
在一种可能的实施例中，图14所示的实施例还可以包括以下操作S1500。In a possible embodiment, the embodiment shown in FIG. 14 may further include the following operation S1500.
S1500：第二终端选择SL CSI-RS的时域资源集合。S1500: The second terminal selects the time domain resource set of SL CSI-RS.
该时域资源集合中可以包含多个时隙，相邻的两个时隙之间的间隔相同。需要说明的是，相邻的两个时隙可以是指逻辑上连续的两个时隙。需要说明的是，在S1500中第二终端在选择时域资源集合时，可以参照图6所示的实施例实施，此处不再赘述。The time domain resource set may include multiple time slots, and the interval between two adjacent time slots is the same. It should be noted that two adjacent time slots may refer to two logically continuous time slots. It should be noted that when the second terminal selects the time domain resource set in S1500, it can be implemented with reference to the embodiment shown in Figure 6, which will not be repeated here.
在一种可能的实施例中，上述SCI还可以用于指示侧行参考信号的时频资源。例如，SCI指示侧行参考信号的时域资源集合。该时域资源集合可以是S1500中第二终端选择的时域资源集合。可以理解的是，上述SCI指示侧行参考信号的时频资源的方式可以参照前述情况1实施。In a possible embodiment, the SCI may also be used to indicate the time-frequency resources of the side reference signal. For example, the SCI indicates a time domain resource set of the side reference signal. The time domain resource set may be a time domain resource set selected by the second terminal in S1500. It is understood that the manner in which the SCI indicates the time-frequency resources of the side reference signal may be implemented with reference to the aforementioned situation 1.
参阅图16，在PSSCH承载MAC CE和MAC PDU的情况下，MAC PDU占用的时隙可以基于SCI中资源预约时期(resource reservation period)字段的参数值Nrsv_period指示，实现对PSSCH的周期性时域资源预约。Referring to FIG. 16 , in the case where the PSSCH carries the MAC CE and the MAC PDU, the time slot occupied by the MAC PDU can be indicated based on the parameter value N rsv_period of the resource reservation period field in the SCI to implement periodic time domain resource reservation for the PSSCH.
举例来说，假设第二终端在时隙n上发送PSCCH、PSSCH和SL CSI-RS，则第二终端在时隙n+k*Nrsv_period(k＝0,1,2,…)上均有PSCCH、PSSCH和SL CSI-RS发送，即第二终端预约了SL资源池中周期性的时域资源。由图11可以看出，通过SCI的字段Nrsv_period的资源选择方式，预约了SL资源池中周期性的时隙资源，使得分布式SL***中的其他终端感知后在这些预约资源上进行避让，保证了周期性业务数据的同时，实现了SL CSI-RS所在时隙的周期性发送，进而用于终端的波束训练过程。For example, assuming that the second terminal sends PSCCH, PSSCH and SL CSI-RS in time slot n, the second terminal sends PSCCH, PSSCH and SL CSI-RS in time slot n+k*N rsv_period (k＝0,1,2,…), that is, the second terminal reserves the periodic time domain resources in the SL resource pool. As can be seen from Figure 11, through the resource selection method of the SCI field N rsv_period , the periodic time slot resources in the SL resource pool are reserved, so that other terminals in the distributed SL system can avoid these reserved resources after sensing, ensuring the periodic service data while realizing the periodic transmission of the time slot where the SL CSI-RS is located, which is then used for the beam training process of the terminal.
本申请实施例中还提供另一种资源指示方法，该方法中第二终端可以发送如图9和图14所示的时隙结构。参阅图17，为本申请实施例提供的一种资源指示方法，可以包括以下操作。Another resource indication method is also provided in the embodiment of the present application, in which the second terminal can send the time slot structure shown in Figure 9 and Figure 14. Referring to Figure 17, a resource indication method provided in the embodiment of the present application can include the following operations.
S1701：第二终端向第一终端发送第一PSCCH。S1701: The second terminal sends a first PSCCH to the first terminal.
相应的，第一终端接收来自第二终端的第一PSCCH。Correspondingly, the first terminal receives the first PSCCH from the second terminal.
其中，上述第一PSCCH中可以承载第一SCI。该第一SCI可以指示第一PSSCH的时频资源。可 选的，该第一SCI可以是第一级SCI。The first PSCCH may carry a first SCI. The first SCI may indicate the time-frequency resources of the first PSSCH. Optionally, the first SCI may be a first level SCI.
S1702：第二终端向第一终端发送第一PSSCH和第一SL CSI-RS。S1702: The second terminal sends the first PSSCH and the first SL CSI-RS to the first terminal.
其中，第一PSSCH中可以只承载MAC CE，如图9所示。第一SL CSI-RS、第一PSSCH和第一PSCCH在同一个时隙上发送。Among them, the first PSSCH can only carry MAC CE, as shown in Figure 9. The first SL CSI-RS, the first PSSCH and the first PSCCH are sent in the same time slot.
S1703：第二终端向第一终端发送第二PSCCH。S1703: The second terminal sends a second PSCCH to the first terminal.
相应的，第一终端接收来自第二终端的第二PSCCH。Correspondingly, the first terminal receives the second PSCCH from the second terminal.
其中，第二PSCCH中可以承载第二SCI。该第二SCI可以指示第二PSSCH的时频资源。可选的，该第二SCI可以是第一级SCI。The second PSCCH may carry a second SCI. The second SCI may indicate the time-frequency resources of the second PSSCH. Optionally, the second SCI may be a first-level SCI.
S1704：第二终端向第一终端发送第二PSSCH和第二SL CSI-RS。S1704: The second terminal sends the second PSSCH and the second SL CSI-RS to the first terminal.
相应的，第一终端接收来自第二终端的第二PSSCH和第二SL CSI-RS。Correspondingly, the first terminal receives the second PSSCH and the second SL CSI-RS from the second terminal.
上文中，第二PSSCH可以承载MAC CE和MAC PDU，如图14所示。第二SL CSI-RS、第二PSSCH和第二PSCCH在同一个时隙上发送。In the above, the second PSSCH can carry MAC CE and MAC PDU, as shown in Figure 14. The second SL CSI-RS, the second PSSCH and the second PSCCH are sent in the same time slot.
在图17所示的实施例中，第一SL CSI-RS和第二SL CSI-RS可以用于终端进行波束训练。第二终端在发送第一SL CSI-RS和第二SL CSI-RS之前，可以选择第一SL CSI-RS和第二SL CSI-RS的第一时域资源集合。In the embodiment shown in FIG17 , the first SL CSI-RS and the second SL CSI-RS can be used for the terminal to perform beam training. Before sending the first SL CSI-RS and the second SL CSI-RS, the second terminal can select a first time domain resource set of the first SL CSI-RS and the second SL CSI-RS.
在一种可能的实施例中，图17所示的实施例还可以包括以下操作S1700。In a possible embodiment, the embodiment shown in FIG. 17 may further include the following operation S1700.
S1700：第二终端选择SL CSI-RS的第一时域资源集合。S1700: The second terminal selects the first time domain resource set of SL CSI-RS.
在一种可能的实现方式中，该第一时域资源集合中可以包含多个时隙，相邻的两个时隙之间的间隔相同。需要说明的是，相邻的两个时隙可以是指逻辑上连续的两个时隙。需要说明的是，在S1700中第二终端在选择时域资源集合时，可以参照图6所示的实施例实施，此处不再赘述。In a possible implementation, the first time domain resource set may include multiple time slots, and the interval between two adjacent time slots is the same. It should be noted that two adjacent time slots may refer to two logically continuous time slots. It should be noted that when the second terminal selects the time domain resource set in S1700, it can be implemented with reference to the embodiment shown in Figure 6, which will not be repeated here.
在S1700中选择的第一时域资源集合中包含的时隙可以用于发送第一SL CSI-RS和第二SL CSI-RS。The time slots included in the first time domain resource set selected in S1700 can be used to send the first SL CSI-RS and the second SL CSI-RS.
本文中，第一SCI和第二SCI可以指示上述选择的第一时域资源集合。例如，第一SCI可以指示第一SL CSI-RS的第二时域资源集合，第二SCI可以指示第二SL CSI-RS的第三时域资源集合。而第一SL CSI-RS的第二时域资源集合和第二SL CSI-RS的第三时域资源集合构成的集合中可以包含多个时隙。第二时域资源集合与第三时域资源集合构成的并集，也就是第一时域资源集合包含的时隙中，相邻的两个时隙之间的间隔相同。In this article, the first SCI and the second SCI may indicate the first time domain resource set selected above. For example, the first SCI may indicate the second time domain resource set of the first SL CSI-RS, and the second SCI may indicate the third time domain resource set of the second SL CSI-RS. The set consisting of the second time domain resource set of the first SL CSI-RS and the third time domain resource set of the second SL CSI-RS may include multiple time slots. The union of the second time domain resource set and the third time domain resource set, that is, the time slots included in the first time domain resource set, has the same interval between two adjacent time slots.
一种可能的情况中，第一SCI可以指示第一SL CSI-RS的第二时域资源集合。例如，第一SCI可以指示Q个时域资源偏移量tq。而第一SL CSI-RS的第二时域资源集合包含的时隙可以包括时隙n和时隙n+tq。其中，n是发送第一PSCCH的发送时隙的索引。In one possible case, the first SCI may indicate the second time domain resource set of the first SL CSI-RS. For example, the first SCI may indicate Q time domain resource offsets t q . The time slots included in the second time domain resource set of the first SL CSI-RS may include time slot n and time slot n+t q . Where n is the index of the transmission time slot for sending the first PSCCH.
另一种可能的情况中，第二SCI指示第二SL CSI-RS的第三时域资源集合可以参照前述情况1实施。由于第二PSSCH中可以承载MAC PDU，因此第二SCI可以通过资源预约时期(resource reservation period)字段的参数值Nrsv_period指示MAC PDU的周期，也就是第二SL CSI-RS的周期。那么第二SL CSI-RS的时隙可以包括n+k*Nrsv_period(k＝0,1,2,…)。In another possible case, the second SCI indicates the third time domain resource set of the second SL CSI-RS can be implemented with reference to the above-mentioned case 1. Since the second PSSCH can carry MAC PDU, the second SCI can indicate the period of MAC PDU, that is, the period of the second SL CSI-RS, through the parameter value N rsv_period of the resource reservation period field. Then the time slot of the second SL CSI-RS can include n+k*N rsv_period (k＝0,1,2,…).
需要说明的是，上述第一SL CSI-RS的时隙n和时隙n+tq和第二SL CSI-RS的时隙n+k*Nrsv_period构成的集合可以包括多个时隙，该多个时隙中相邻的两个时隙之间的间隔相同。以下，通过图18进行介绍。It should be noted that the set consisting of the time slot n and time slot n+ tq of the first SL CSI-RS and the time slot n+k* Nrsv_period of the second SL CSI-RS may include multiple time slots, and the interval between two adjacent time slots in the multiple time slots is the same. This is described below with reference to FIG.
参阅图18，假设第二终端在时隙n上发送PSCCH，该PSCCH可以承载SCI。该SCI可以指示PSSCH的周期或者说SL CSI-RS的周期Nrsv_period。第二终端在时隙n上发送PSSCH和SL CSI-RS，该PSSCH承载MAC PDU和MAC CE。则第二终端在时隙n+k*Nrsv_period(k＝0,1,2,…)上均有携带SL CSI-RS的发送。第二终端在时隙n+t1上发送PSCCH，该PSCCH可以承载SCI，该SCI可以指示2个时隙偏移量，分别为t1和t2，则第二终端在时隙n+t1和n+t2上均有SL CSI-RS的发送。由图18可以看出，PSSCH是否承载MAC PDU不响对SL CSI-RS的时隙的选择。第二终端在时隙n+t2上发送PSCCH，该PSCCH可以承载SCI，该SCI可以指示1个时隙偏移量t1。可以理解的是，该t1与时隙n+t1发送的SCI指示的t1可以相同也可以不同，以此类推，第二终端可以通过SCI指示PSSCH的发送时隙资源或者说SL CSI-RS的时隙资源，或者通过SCI指示Q个时隙偏移量，均可以实现选择的SL CSI-RS的时隙是均匀的，以更好地进行波束扫描过程。不仅如此，通过SCI指示SL CSI-RS的时隙，使得分布式SL***中的其他终端感知后在这些预约资源上进行避让，保证MAC PDU传输的同时，实现了SL CSI-RS所在时隙的资源选择，用于第一终端的波束训练过程。 Referring to FIG. 18 , it is assumed that the second terminal sends PSCCH on time slot n, and the PSCCH can carry SCI. The SCI can indicate the period of PSSCH or the period of SL CSI-RS N rsv_period . The second terminal sends PSSCH and SL CSI-RS on time slot n, and the PSSCH carries MAC PDU and MAC CE. Then the second terminal has transmissions carrying SL CSI-RS on time slots n+k*N rsv_period (k＝0,1,2,…). The second terminal sends PSCCH on time slot n+t 1 , and the PSCCH can carry SCI. The SCI can indicate two time slot offsets, t 1 and t 2 , respectively. Then the second terminal has transmissions of SL CSI-RS on time slots n+t 1 and n+t 2. It can be seen from FIG. 18 that whether PSSCH carries MAC PDU does not affect the selection of the time slot of SL CSI-RS. The second terminal sends PSCCH in time slot n+t 2 , and the PSCCH can carry SCI, and the SCI can indicate a time slot offset t 1. It can be understood that the t 1 can be the same as or different from the t 1 indicated by the SCI sent in time slot n+t 1. By analogy, the second terminal can indicate the sending time slot resources of PSSCH or the time slot resources of SL CSI-RS through SCI, or indicate Q time slot offsets through SCI, which can achieve uniform time slots of the selected SL CSI-RS to better perform the beam scanning process. In addition, by indicating the time slot of SL CSI-RS through SCI, other terminals in the distributed SL system can avoid these reserved resources after sensing, ensuring the transmission of MAC PDU while realizing the resource selection of the time slot where SL CSI-RS is located, which is used for the beam training process of the first terminal.
由图18可以看出，虽然不同的时隙发送的时隙结构可能不相同，但第二终端选择和指示的时域资源集合中包含的时隙是均匀分布的，可以更好的进行波束扫描过程。It can be seen from FIG. 18 that, although the time slot structures sent in different time slots may be different, the time slots contained in the time domain resource set selected and indicated by the second terminal are evenly distributed, which can better perform the beam scanning process.
基于上述资源指示方式，本申请实施例中第二终端可以指示SL CSI-RS的时隙。这样，第二终端可以通过选择的SL CSI-RS的时隙发送SL CSI-RS，让第一终端基于该SL CSI-RS进行波束训练，波束训练的流程可以参照前述基站与终端的波束训练了流程，此处不再赘述。Based on the above resource indication method, the second terminal in the embodiment of the present application can indicate the time slot of the SL CSI-RS. In this way, the second terminal can send the SL CSI-RS through the selected time slot of the SL CSI-RS, allowing the first terminal to perform beam training based on the SL CSI-RS. The process of beam training can refer to the beam training process of the aforementioned base station and terminal, which will not be repeated here.
下面结合附图介绍本申请实施例中用来实现上述方法的通信装置。因此，上文中的内容均可以用于后续实施例中，重复的内容不再赘述。The following describes the communication device used to implement the above method in the embodiment of the present application in conjunction with the accompanying drawings. Therefore, the above contents can be used in subsequent embodiments, and repeated contents will not be repeated.
图19为本申请实施例提供的通信装置1900的示意性框图。该通信装置1900可以对应实现上述各个方法实施例中由第一网络设备或第二网络设备实现的功能或者步骤。该通信装置可以包括处理单元1910和收发单元1920。可选的，还可以包括存储单元，该存储单元可以用于存储指令(代码或者程序)和/或数据。处理单元1910和收发单元1920可以与该存储单元耦合，例如，处理单元1910可以读取存储单元中的指令(代码或者程序)和/或数据，以实现相应的方法。上述各个单元可以独立设置，也可以部分或者全部集成。Figure 19 is a schematic block diagram of a communication device 1900 provided in an embodiment of the present application. The communication device 1900 can correspond to the functions or steps implemented by the first network device or the second network device in the above-mentioned various method embodiments. The communication device may include a processing unit 1910 and a transceiver unit 1920. Optionally, a storage unit may also be included, which can be used to store instructions (codes or programs) and/or data. The processing unit 1910 and the transceiver unit 1920 can be coupled to the storage unit. For example, the processing unit 1910 can read the instructions (codes or programs) and/or data in the storage unit to implement the corresponding method. The above-mentioned units can be set independently or partially or fully integrated.
在一些可能的实施方式中，通信装置1900能够对应实现上述方法实施例中第二终端的行为和功能。例如通信装置1900可以为第二终端，也可以为应用于第二终端中的部件(例如芯片或者电路)。收发单元1920可以用于执行图10所示的实施例中由第二终端所执行的全部接收或发送操作。例如图10所示的实施例中的S1001，和/或用于支持本文所描述的技术的其它过程；其中，处理单元1910用于执行如图10所示的实施例中由第二终端所执行的除了收发操作之外的全部操作。例如图10所示的实施例中的S1000，和/或用于支持本文所描述的技术的其它过程。In some possible implementations, the communication device 1900 can correspond to the implementation of the behavior and function of the second terminal in the above method embodiment. For example, the communication device 1900 can be a second terminal, or a component (such as a chip or circuit) applied to the second terminal. The transceiver unit 1920 can be used to perform all receiving or sending operations performed by the second terminal in the embodiment shown in Figure 10. For example, S1001 in the embodiment shown in Figure 10, and/or other processes for supporting the technology described herein; wherein the processing unit 1910 is used to perform all operations except the transceiver operation performed by the second terminal in the embodiment shown in Figure 10. For example, S1000 in the embodiment shown in Figure 10, and/or other processes for supporting the technology described herein.
例如，处理单元1910，用于生成SCI。收发单元1920，用于向第一终端发送PSCCH。PSCCH承载SCI，SCI用于指示PSSCH时频资源。收发单元1920，还用于向第一终端发送侧行参考信号和PSSCH。其中，PSSCH只承载MAC CE。上文中，侧行参考信号用于波束训练。PSCCH，PSSCH和侧行参考信号在相同的时隙发送。For example, the processing unit 1910 is used to generate SCI. The transceiver unit 1920 is used to send PSCCH to the first terminal. PSCCH carries SCI, and SCI is used to indicate PSSCH time-frequency resources. The transceiver unit 1920 is also used to send a sidelink reference signal and PSSCH to the first terminal. Among them, PSSCH only carries MAC CE. In the above, the sidelink reference signal is used for beam training. PSCCH, PSSCH and sidelink reference signal are sent in the same time slot.
在一些可能的实施方式中，通信装置1900能够对应实现上述方法实施例中第二终端的行为和功能。例如通信装置1900可以为第二终端，也可以为应用于第二终端中的部件(例如芯片或者电路)。收发单元1920可以用于执行图15所示的实施例中由第二终端所执行的全部接收或发送操作。例如图15所示的实施例中的S1501，和/或用于支持本文所描述的技术的其它过程；其中，处理单元1910用于执行如图15所示的实施例中由第二终端所执行的除了收发操作之外的全部操作。例如图15所示的实施例中的S1500，和/或用于支持本文所描述的技术的其它过程。In some possible implementations, the communication device 1900 can correspond to the implementation of the behavior and function of the second terminal in the above method embodiment. For example, the communication device 1900 can be a second terminal, or a component (such as a chip or circuit) applied to the second terminal. The transceiver unit 1920 can be used to perform all receiving or sending operations performed by the second terminal in the embodiment shown in Figure 15. For example, S1501 in the embodiment shown in Figure 15, and/or other processes for supporting the technology described herein; wherein the processing unit 1910 is used to perform all operations except the transceiver operation performed by the second terminal in the embodiment shown in Figure 15. For example, S1500 in the embodiment shown in Figure 15, and/or other processes for supporting the technology described herein.
例如，处理单元1910，用于生成SCI。收发单元1920，用于向第一终端发送PSCCH。PSCCH承载SCI，SCI用于指示PSSCH时频资源。收发单元1920，还用于向第一终端发送侧行参考信号和PSSCH。其中，PSSCH承载MAC CE和MAC PDU。上文中，侧行参考信号用于波束训练。PSCCH，PSSCH和侧行参考信号在相同的时隙发送。For example, the processing unit 1910 is used to generate SCI. The transceiver unit 1920 is used to send PSCCH to the first terminal. PSCCH carries SCI, and SCI is used to indicate PSSCH time-frequency resources. The transceiver unit 1920 is also used to send a sidelink reference signal and PSSCH to the first terminal. Among them, PSSCH carries MAC CE and MAC PDU. In the above, the sidelink reference signal is used for beam training. PSCCH, PSSCH and sidelink reference signal are sent in the same time slot.
在一些可能的实施方式中，通信装置1900能够对应实现上述方法实施例中第二终端的行为和功能。例如通信装置1900可以为第二终端，也可以为应用于第二终端中的部件(例如芯片或者电路)。收发单元1920可以用于执行图17所示的实施例中由第二终端所执行的全部接收或发送操作。例如图17所示的实施例中的S1701，和/或用于支持本文所描述的技术的其它过程；其中，处理单元1910用于执行如图17所示的实施例中由第二终端所执行的除了收发操作之外的全部操作。In some possible implementations, the communication device 1900 can correspond to the behavior and function of the second terminal in the above method embodiment. For example, the communication device 1900 can be a second terminal, or a component (such as a chip or circuit) applied to the second terminal. The transceiver unit 1920 can be used to perform all receiving or sending operations performed by the second terminal in the embodiment shown in Figure 17. For example, S1701 in the embodiment shown in Figure 17, and/or other processes for supporting the technology described herein; wherein the processing unit 1910 is used to perform all operations except the transceiver operation performed by the second terminal in the embodiment shown in Figure 17.
例如，处理单元1910，用于生成第一SCI和第二SCI。收发单元1920，用于向第一终端发送第一PSCCH。其中，第一PSCCH承载第一SCI，第一SCI用于指示第一PSSCH的时频资源。收发单元1920，还用于向第一终端发送第一侧行参考信号和第一PSSCH。其中，第一侧行参考信号用于波束训练，第一PSSCH只承载第一MAC CE。第一PSCCH，第一PSSCH和第一侧行参考信号在相同的时隙发送。收发单元1920，还用于向第一终端发送第二PSCCH。其中，第二PSCCH承载第二SCI，第二SCI用于指示第二PSSCH的时频资源。收发单元1920，还用于向第一终端发送第二侧行参考信号和第二PSSCH。其中，第二侧行参考信号用于波束训练，第二PSSCH承载第二MAC CE和MAC PDU。第二PSCCH、第二PSSCH和第二侧行参考信号在相同的时隙发送。For example, the processing unit 1910 is used to generate a first SCI and a second SCI. The transceiver unit 1920 is used to send a first PSCCH to the first terminal. The first PSCCH carries the first SCI, and the first SCI is used to indicate the time-frequency resources of the first PSSCH. The transceiver unit 1920 is also used to send a first sideline reference signal and a first PSSCH to the first terminal. The first sideline reference signal is used for beam training, and the first PSSCH only carries the first MAC CE. The first PSCCH, the first PSSCH and the first sideline reference signal are sent in the same time slot. The transceiver unit 1920 is also used to send a second PSCCH to the first terminal. The second PSCCH carries the second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH. The transceiver unit 1920 is also used to send a second sideline reference signal and a second PSSCH to the first terminal. The second sideline reference signal is used for beam training, and the second PSSCH carries the second MAC CE and MAC PDU. The second PSCCH, the second PSSCH and the second sideline reference signal are sent in the same time slot.
在一些可能的实施方式中，通信装置1900能够对应实现上述方法实施例中第一终端的行为和功能。例如通信装置1900可以为第一终端，也可以为应用于第一终端中的部件(例如芯片或者电路)。收发单 元1920可以用于执行图10所示的实施例中由第一终端所执行的全部接收或发送操作。例如图10所示的实施例中的S1001，和/或用于支持本文所描述的技术的其它过程；其中，处理单元1910用于执行如图10所示的实施例中由第一终端所执行的除了收发操作之外的全部操作，和/或用于支持本文所描述的技术的其它过程。In some possible implementations, the communication device 1900 can implement the behaviors and functions of the first terminal in the above method embodiments. For example, the communication device 1900 can be the first terminal, or a component (such as a chip or circuit) used in the first terminal. The processing unit 1920 may be used to perform all receiving or sending operations performed by the first terminal in the embodiment shown in FIG10. For example, S1001 in the embodiment shown in FIG10, and/or other processes for supporting the technology described herein; wherein the processing unit 1910 is used to perform all operations except the receiving and sending operations performed by the first terminal in the embodiment shown in FIG10, and/or other processes for supporting the technology described herein.
例如，收发单元1920，用于接收来自第二终端的PSCCH。PSCCH承载SCI，SCI用于指示PSSCH的时频资源。收发单元1920，还用于接收来自第二终端的侧行参考信号和PSSCH。其中，PSSCH只承载MAC CE，侧行参考信号用于波束训练。PSCCH，PSSCH和侧行参考信号在相同的时隙发送。处理单元1910，用于确定PSSCH的时频资源。For example, the transceiver unit 1920 is used to receive the PSCCH from the second terminal. The PSCCH carries the SCI, and the SCI is used to indicate the time-frequency resources of the PSSCH. The transceiver unit 1920 is also used to receive the side reference signal and the PSSCH from the second terminal. Among them, the PSSCH only carries the MAC CE, and the side reference signal is used for beam training. The PSCCH, PSSCH and the side reference signal are sent in the same time slot. The processing unit 1910 is used to determine the time-frequency resources of the PSSCH.
在一些可能的实施方式中，通信装置1900能够对应实现上述方法实施例中第一终端的行为和功能。例如通信装置1900可以为第一终端，也可以为应用于第一终端中的部件(例如芯片或者电路)。收发单元1920可以用于执行图15所示的实施例中由第一终端所执行的全部接收或发送操作。例如图15所示的实施例中的S1501，和/或用于支持本文所描述的技术的其它过程；其中，处理单元1910用于执行如图15所示的实施例中由第一终端所执行的除了收发操作之外的全部操作，和/或用于支持本文所描述的技术的其它过程。In some possible implementations, the communication device 1900 can correspond to the implementation of the behavior and function of the first terminal in the above-mentioned method embodiment. For example, the communication device 1900 can be a first terminal, or a component (such as a chip or circuit) applied to the first terminal. The transceiver unit 1920 can be used to perform all receiving or sending operations performed by the first terminal in the embodiment shown in Figure 15. For example, S1501 in the embodiment shown in Figure 15, and/or other processes for supporting the technology described herein; wherein the processing unit 1910 is used to perform all operations except the transceiver operation performed by the first terminal in the embodiment shown in Figure 15, and/or other processes for supporting the technology described herein.
例如，收发单元1920，用于接收来自第二终端的PSCCH。PSCCH承载SCI，SCI用于指示PSSCH的时频资源。收发单元1920，还用于接收来自第二终端的侧行参考信号和PSSCH。其中，PSSCH承载MAC CE和MAC PDU，侧行参考信号用于波束训练。PSCCH，PSSCH和侧行参考信号在相同的时隙发送。处理单元1910，用于确定PSSCH的时频资源。For example, the transceiver unit 1920 is used to receive the PSCCH from the second terminal. The PSCCH carries the SCI, and the SCI is used to indicate the time-frequency resources of the PSSCH. The transceiver unit 1920 is also used to receive the side reference signal and the PSSCH from the second terminal. Among them, the PSSCH carries the MAC CE and the MAC PDU, and the side reference signal is used for beam training. The PSCCH, PSSCH and the side reference signal are sent in the same time slot. The processing unit 1910 is used to determine the time-frequency resources of the PSSCH.
在一些可能的实施方式中，通信装置1900能够对应实现上述方法实施例中第一终端的行为和功能。例如通信装置1900可以为第一终端，也可以为应用于第一终端中的部件(例如芯片或者电路)。收发单元1920可以用于执行图17所示的实施例中由第一终端所执行的全部接收或发送操作。例如图17所示的实施例中的S1701，和/或用于支持本文所描述的技术的其它过程；其中，处理单元1910用于执行如图17所示的实施例中由第一终端所执行的除了收发操作之外的全部操作，和/或用于支持本文所描述的技术的其它过程。In some possible implementations, the communication device 1900 can correspond to the implementation of the behavior and function of the first terminal in the above method embodiment. For example, the communication device 1900 can be a first terminal, or a component (such as a chip or circuit) applied to the first terminal. The transceiver unit 1920 can be used to perform all receiving or sending operations performed by the first terminal in the embodiment shown in Figure 17. For example, S1701 in the embodiment shown in Figure 17, and/or other processes for supporting the technology described herein; wherein the processing unit 1910 is used to perform all operations except the transceiver operation performed by the first terminal in the embodiment shown in Figure 17, and/or other processes for supporting the technology described herein.
例如，收发单元1920，用于接收来自第二终端的第一PSCCH。其中，第一PSCCH承载第一SCI，第一SCI用于指示第一PSSCH的时频资源。收发单元1920，还用于接收来自第二终端的第一侧行参考信号和第一PSSCH，第一侧行参考信号用于波束训练，第一PSSCH只承载第一MAC CE。第一PSCCH，第一PSSCH和第一侧行参考信号在相同的时隙发送。收发单元1920，还用于接收来自第二终端的第二PSCCH。其中，第二PSCCH承载第二SCI，第二SCI用于指示第二PSSCH的时频资源。收发单元1920，还用于接收来自第二终端的第二侧行参考信号和第二PSSCH，第二侧行参考信号用于波束训练，第二PSSCH承载第二MAC CE和MAC PDU。第二PSCCH、第二PSSCH和第二侧行参考信号在相同的时隙发送。处理单元1910，用于确定第一PSSCH的时频资源和第二PSSCH的时频资源。For example, the transceiver unit 1920 is used to receive a first PSCCH from a second terminal. The first PSCCH carries a first SCI, and the first SCI is used to indicate the time-frequency resources of the first PSSCH. The transceiver unit 1920 is also used to receive a first sideline reference signal and a first PSSCH from a second terminal. The first sideline reference signal is used for beam training, and the first PSSCH only carries a first MAC CE. The first PSCCH, the first PSSCH, and the first sideline reference signal are sent in the same time slot. The transceiver unit 1920 is also used to receive a second PSCCH from a second terminal. The second PSCCH carries a second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH. The transceiver unit 1920 is also used to receive a second sideline reference signal and a second PSSCH from a second terminal. The second sideline reference signal is used for beam training, and the second PSSCH carries a second MAC CE and a MAC PDU. The second PSCCH, the second PSSCH, and the second sideline reference signal are sent in the same time slot. The processing unit 1910 is configured to determine the time-frequency resources of the first PSSCH and the time-frequency resources of the second PSSCH.
有关处理单元1910和收发单元1920所执行的操作，可以参见前述方法实施例的相关描述。For the operations performed by the processing unit 1910 and the transceiver unit 1920, reference may be made to the relevant description of the aforementioned method embodiment.
应理解，本申请实施例中的处理单元1910可以由处理器或处理器相关电路组件实现，收发单元1920可以由收发器或收发器相关电路组件或者通信接口实现。It should be understood that the processing unit 1910 in the embodiment of the present application can be implemented by a processor or a processor-related circuit component, and the transceiver unit 1920 can be implemented by a transceiver or a transceiver-related circuit component or a communication interface.
基于同一构思，如图20所示，本申请实施例提供一种通信装置2000。该通信装置2000包括处理器2010。可选的，通信装置2000还可以包括存储器2020，用于存储处理器2010执行的指令或存储处理器2010运行指令所需要的输入数据或存储处理器2010运行指令后产生的数据。处理器2010可以通过存储器2020存储的指令实现上述方法实施例所示的方法。Based on the same concept, as shown in FIG20 , an embodiment of the present application provides a communication device 2000. The communication device 2000 includes a processor 2010. Optionally, the communication device 2000 may also include a memory 2020 for storing instructions executed by the processor 2010 or storing input data required by the processor 2010 to run the instructions or storing data generated after the processor 2010 runs the instructions. The processor 2010 may implement the method shown in the above method embodiment through the instructions stored in the memory 2020.
基于同一构思，如图21所示，本申请实施例提供一种通信装置2100，该通信装置2100可以是芯片或者芯片***。可选的，在本申请实施例中芯片***可以由芯片构成，也可以包含芯片和其他分立器件。Based on the same concept, as shown in Figure 21, the embodiment of the present application provides a communication device 2100, which can be a chip or a chip system. Optionally, in the embodiment of the present application, the chip system can be composed of chips, or can include chips and other discrete devices.
通信装置2100可以包括至少一个处理器2110，该处理器2110与存储器耦合，可选的，存储器可以位于该装置之内，也可以位于该装置之外。例如，通信装置2100还可以包括至少一个存储器2120。存储器2120保存实施上述任一实施例中必要计算机程序、配置信息、计算机程序或指令和/或数据；处理器2110可能执行存储器2120中存储的计算机程序，完成上述任一实施例中的方法。The communication device 2100 may include at least one processor 2110, and the processor 2110 is coupled to a memory. Optionally, the memory may be located inside the device or outside the device. For example, the communication device 2100 may also include at least one memory 2120. The memory 2120 stores necessary computer programs, configuration information, computer programs or instructions and/or data for implementing any of the above embodiments; the processor 2110 may execute the computer program stored in the memory 2120 to complete the method in any of the above embodiments.
本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器2110可能和存储器2120协同操作。本申请实 施例中不限定上述收发器2130、处理器2110以及存储器2120之间的具体连接介质。The coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 2110 may operate in conjunction with the memory 2120. The specific connection medium between the transceiver 2130 , the processor 2110 , and the memory 2120 is not limited in this embodiment.
通信装置2100中还可以包括收发器2130，通信装置2100可以通过收发器2130和其它设备进行信息交互。收发器2130可以是电路、总线、收发器或者其它任意可以用于进行信息交互的装置，或称为信号收发单元。如图21所示，该收发器2130包括发射机2131、接收机2132和天线2133。此外，当该通信装置2100为芯片类的装置或者电路时，该通信装置2100中的收发器也可以是输入输出电路和/或通信接口，可以输入数据(或称，接收数据)和输出数据(或称，发送数据)，处理器为集成的处理器或者微处理器或者集成电路，处理器可以根据输入数据确定输出数据。The communication device 2100 may also include a transceiver 2130, and the communication device 2100 may exchange information with other devices through the transceiver 2130. The transceiver 2130 may be a circuit, a bus, a transceiver or any other device that can be used for information exchange, or may be referred to as a signal transceiver unit. As shown in FIG21 , the transceiver 2130 includes a transmitter 2131, a receiver 2132 and an antenna 2133. In addition, when the communication device 2100 is a chip-type device or circuit, the transceiver in the communication device 2100 may also be an input-output circuit and/or a communication interface, which may input data (or receive data) and output data (or send data), and the processor may be an integrated processor or a microprocessor or an integrated circuit, and the processor may determine output data based on input data.
在一种可能的实施方式中，该通信装置2100可以应用于第二终端，具体通信装置2100可以是第二终端，也可以是能够支持第二终端实现上述涉及的任一实施例中第二终端的功能的装置。存储器2120保存实现上述任一实施例中的第二终端的功能的必要计算机程序、计算机程序或指令和/或数据。处理器2110可执行存储器2120存储的计算机程序，完成上述任一实施例中第二终端执行的方法。In a possible implementation, the communication device 2100 may be applied to a second terminal, and the specific communication device 2100 may be a second terminal, or may be a device capable of supporting the second terminal to implement the function of the second terminal in any of the above-mentioned embodiments. The memory 2120 stores the necessary computer programs, computer programs or instructions and/or data for implementing the function of the second terminal in any of the above-mentioned embodiments. The processor 2110 may execute the computer program stored in the memory 2120 to complete the method executed by the second terminal in any of the above-mentioned embodiments.
在一种可能的实现方式中，该通信装置2100可以应用于第一终端，具体通信装置2100可以是第一终端，也可以是能够支持第一终端实现上述涉及的任一实施例中第一终端的功能的装置。存储器2120保存实现上述任一实施例中的第一终端的功能的必要计算机程序、计算机程序或指令和/或数据。处理器2110可执行存储器2120存储的计算机程序，完成上述任一实施例中第一终端执行的方法。In a possible implementation, the communication device 2100 may be applied to a first terminal, and the specific communication device 2100 may be a first terminal, or may be a device capable of supporting the first terminal to implement the functions of the first terminal in any of the above-mentioned embodiments. The memory 2120 stores necessary computer programs, computer programs or instructions and/or data for implementing the functions of the first terminal in any of the above-mentioned embodiments. The processor 2110 may execute the computer program stored in the memory 2120 to complete the method executed by the first terminal in any of the above-mentioned embodiments.
由于本实施例提供的通信装置2100可应用于第二终端，完成上述第二终端执行的方法，或者可以应用于第一终端，完成上述第一终端执行的方法。因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。Since the communication device 2100 provided in this embodiment can be applied to the second terminal to complete the method executed by the second terminal, or can be applied to the first terminal to complete the method executed by the first terminal, the technical effects that can be obtained can refer to the above method embodiments, which will not be repeated here.
在本申请实施例中，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实施或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.
在本申请实施例中，存储器可以是非易失性存储器，比如硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)等，还可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)。存储器还可以是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。本申请实施例中的存储器还可以是电路或者其它任意能够实施存储功能的装置，用于存储计算机程序、计算机程序或指令和/或数据。In the embodiments of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), such as a random-access memory (RAM). The memory may also be any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in the embodiments of the present application may also be a circuit or any other device that can implement a storage function, for storing computer programs, computer programs or instructions and/or data.
基于以上实施例，参见图22，本申请实施例还提供另一种通信装置2200，包括：输入输出接口2210和逻辑电路2220；输入输出接口2210，用于接收代码指令并传输至逻辑电路2220；逻辑电路2220，用于运行代码指令以执行上述任一实施例中第二终端或第一终端执行的方法。Based on the above embodiments, referring to FIG. 22 , the embodiments of the present application also provide another communication device 2200, including: an input-output interface 2210 and a logic circuit 2220; the input-output interface 2210 is used to receive code instructions and transmit them to the logic circuit 2220; the logic circuit 2220 is used to run code instructions to execute the method executed by the second terminal or the first terminal in any of the above embodiments.
以下，对该通信装置应用于第二终端或第一终端所执行的操作进行详细说明。The following describes in detail the operations performed by the communication device when applied to the second terminal or the first terminal.
一种可选的实施方式中，该通信装置2200可应用于第二终端，执行上述第二终端所执行的方法，具体的例如前述图10中所示的实施例中第二终端所执行的方法。In an optional implementation, the communication device 2200 may be applied to a second terminal to execute the method executed by the second terminal, for example, the method executed by the second terminal in the embodiment shown in FIG. 10 .
逻辑电路2220，用于生成SCI。输入输出接口2210，用于向第一终端输出PSCCH。PSCCH承载SCI，SCI用于指示PSSCH时频资源。输入输出接口2210，还用于向第一终端输出侧行参考信号和PSSCH。其中，PSSCH只承载MAC CE。上文中，侧行参考信号用于波束训练。PSCCH，PSSCH和侧行参考信号在相同的时隙发送。The logic circuit 2220 is used to generate SCI. The input-output interface 2210 is used to output PSCCH to the first terminal. PSCCH carries SCI, and SCI is used to indicate PSSCH time-frequency resources. The input-output interface 2210 is also used to output the side reference signal and PSSCH to the first terminal. Among them, PSSCH only carries MAC CE. In the above, the side reference signal is used for beam training. PSCCH, PSSCH and side reference signal are sent in the same time slot.
一种可选的实施方式中，该通信装置2200可应用于第二终端，执行上述第二终端所执行的方法，具体的例如前述图15中所示的实施例中第二终端所执行的方法。In an optional implementation, the communication device 2200 may be applied to a second terminal to execute the method executed by the second terminal, for example, the method executed by the second terminal in the embodiment shown in FIG. 15 .
逻辑电路2220，用于生成SCI。输入输出接口2210，用于向第一终端输出PSCCH。PSCCH承载SCI，SCI用于指示PSSCH时频资源。输入输出接口2210，还用于向第一终端输出侧行参考信号和PSSCH。其中，PSSCH承载MAC CE和MAC PDU。上文中，侧行参考信号用于波束训练。PSCCH，PSSCH和侧行参考信号在相同的时隙发送。The logic circuit 2220 is used to generate SCI. The input-output interface 2210 is used to output PSCCH to the first terminal. PSCCH carries SCI, and SCI is used to indicate PSSCH time-frequency resources. The input-output interface 2210 is also used to output a sidelink reference signal and PSSCH to the first terminal. Among them, PSSCH carries MAC CE and MAC PDU. In the above, the sidelink reference signal is used for beam training. PSCCH, PSSCH and sidelink reference signal are sent in the same time slot.
一种可选的实施方式中，该通信装置2200可应用于第二终端，执行上述第二终端所执行的方法，具体的例如前述图17中所示的实施例中第二终端所执行的方法。In an optional implementation, the communication device 2200 may be applied to a second terminal to execute the method executed by the second terminal, for example, the method executed by the second terminal in the embodiment shown in FIG. 17 .
逻辑电路2220，用于生成第一SCI和第二SCI。输入输出接口2210，用于向第一终端输出第一PSCCH。其中，第一PSCCH承载第一SCI，第一SCI用于指示第一PSSCH的时频资源。输入输出接口2210， 还用于向第一终端输出第一侧行参考信号和第一PSSCH。其中，第一侧行参考信号用于波束训练，第一PSSCH只承载第一MAC CE。第一PSCCH，第一PSSCH和第一侧行参考信号在相同的时隙发送。输入输出接口2210，还用于向第一终端输出第二PSCCH。其中，第二PSCCH承载第二SCI，第二SCI用于指示第二PSSCH的时频资源。输入输出接口2210，还用于向第一终端输出第二侧行参考信号和第二PSSCH。其中，第二侧行参考信号用于波束训练，第二PSSCH承载第二MAC CE和MAC PDU。第二PSCCH、第二PSSCH和第二侧行参考信号在相同的时隙发送。The logic circuit 2220 is used to generate the first SCI and the second SCI. The input-output interface 2210 is used to output the first PSCCH to the first terminal. The first PSCCH carries the first SCI, and the first SCI is used to indicate the time-frequency resources of the first PSSCH. The input-output interface 2210 is used to output the first PSCCH to the first terminal. It is also used to output the first side reference signal and the first PSSCH to the first terminal. The first side reference signal is used for beam training, and the first PSSCH only carries the first MAC CE. The first PSCCH, the first PSSCH and the first side reference signal are sent in the same time slot. The input-output interface 2210 is also used to output the second PSCCH to the first terminal. The second PSCCH carries the second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH. The input-output interface 2210 is also used to output the second side reference signal and the second PSSCH to the first terminal. The second side reference signal is used for beam training, and the second PSSCH carries the second MAC CE and MAC PDU. The second PSCCH, the second PSSCH and the second side reference signal are sent in the same time slot.
由于本实施例提供的通信装置2200可应用于第二终端，完成上述第二终端执行的方法。因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。Since the communication device 2200 provided in this embodiment can be applied to the second terminal to complete the method executed by the second terminal, the technical effects that can be obtained can refer to the above method embodiment and will not be repeated here.
一种可选的实施方式中，该通信装置2200可应用于第一终端，执行上述第一终端所执行的方法，具体的例如前述图10所示的实施例中第一终端所执行的方法。In an optional implementation, the communication device 2200 may be applied to a first terminal to execute the method executed by the first terminal, for example, the method executed by the first terminal in the embodiment shown in FIG. 10 .
输入输出接口2210，用于输入来自第二终端的PSCCH。PSCCH承载SCI，SCI用于指示PSSCH的时频资源。输入输出接口2210，还用于输入来自第二终端的侧行参考信号和PSSCH。其中，PSSCH只承载MAC CE，侧行参考信号用于波束训练。PSCCH，PSSCH和侧行参考信号在相同的时隙发送。逻辑电路2220，用于确定PSSCH的时频资源。The input-output interface 2210 is used to input the PSCCH from the second terminal. The PSCCH carries the SCI, and the SCI is used to indicate the time-frequency resources of the PSSCH. The input-output interface 2210 is also used to input the side reference signal and the PSSCH from the second terminal. Among them, the PSSCH only carries the MAC CE, and the side reference signal is used for beam training. The PSCCH, PSSCH and the side reference signal are sent in the same time slot. The logic circuit 2220 is used to determine the time-frequency resources of the PSSCH.
一种可选的实施方式中，该通信装置2200可应用于第一终端，执行上述第一终端所执行的方法，具体的例如前述图15所示的实施例中第一终端所执行的方法。In an optional implementation, the communication device 2200 may be applied to a first terminal to execute the method executed by the first terminal, for example, the method executed by the first terminal in the embodiment shown in FIG. 15 .
输入输出接口2210，用于输入来自第二终端的PSCCH。PSCCH承载SCI，SCI用于指示PSSCH的时频资源。输入输出接口2210，还用于输入来自第二终端的侧行参考信号和PSSCH。其中，PSSCH承载MAC CE和MAC PDU，侧行参考信号用于波束训练。PSCCH，PSSCH和侧行参考信号在相同的时隙发送。逻辑电路2220，用于确定PSSCH的时频资源。The input-output interface 2210 is used to input the PSCCH from the second terminal. The PSCCH carries the SCI, which is used to indicate the time-frequency resources of the PSSCH. The input-output interface 2210 is also used to input the side reference signal and PSSCH from the second terminal. Among them, the PSSCH carries the MAC CE and MAC PDU, and the side reference signal is used for beam training. The PSCCH, PSSCH and the side reference signal are sent in the same time slot. The logic circuit 2220 is used to determine the time-frequency resources of the PSSCH.
一种可选的实施方式中，该通信装置2200可应用于第一终端，执行上述第一终端所执行的方法，具体的例如前述图17所示的实施例中第一终端所执行的方法。In an optional implementation, the communication device 2200 may be applied to a first terminal to execute the method executed by the first terminal, for example, the method executed by the first terminal in the embodiment shown in FIG. 17 .
输入输出接口2210，用于输入来自第二终端的第一PSCCH。其中，第一PSCCH承载第一SCI，第一SCI用于指示第一PSSCH的时频资源。输入输出接口2210，还用于输入来自第二终端的第一侧行参考信号和第一PSSCH，第一侧行参考信号用于波束训练，第一PSSCH只承载第一MAC CE。第一PSCCH，第一PSSCH和第一侧行参考信号在相同的时隙发送。输入输出接口2210，还用于输入来自第二终端的第二PSCCH。其中，第二PSCCH承载第二SCI，第二SCI用于指示第二PSSCH的时频资源。输入输出接口2210，还用于输入来自第二终端的第二侧行参考信号和第二PSSCH，第二侧行参考信号用于波束训练，第二PSSCH承载第二MAC CE和MAC PDU。第二PSCCH、第二PSSCH和第二侧行参考信号在相同的时隙发送。逻辑电路2220，用于确定第一PSSCH的时频资源和第二PSSCH的时频资源。The input-output interface 2210 is used to input the first PSCCH from the second terminal. The first PSCCH carries the first SCI, and the first SCI is used to indicate the time-frequency resources of the first PSSCH. The input-output interface 2210 is also used to input the first sideline reference signal and the first PSSCH from the second terminal. The first sideline reference signal is used for beam training, and the first PSSCH only carries the first MAC CE. The first PSCCH, the first PSSCH and the first sideline reference signal are sent in the same time slot. The input-output interface 2210 is also used to input the second PSCCH from the second terminal. The second PSCCH carries the second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH. The input-output interface 2210 is also used to input the second sideline reference signal and the second PSSCH from the second terminal. The second sideline reference signal is used for beam training, and the second PSSCH carries the second MAC CE and MAC PDU. The second PSCCH, the second PSSCH and the second sideline reference signal are sent in the same time slot. The logic circuit 2220 is used to determine the time-frequency resources of the first PSSCH and the time-frequency resources of the second PSSCH.
由于本实施例提供的通信装置2200可应用于第一终端，完成上述第一终端执行的方法。因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。Since the communication device 2200 provided in this embodiment can be applied to the first terminal to complete the method executed by the first terminal, the technical effects that can be obtained can refer to the above method embodiments, which will not be described in detail here.
基于以上实施例，本申请实施例还提供一种通信***。该通信***包括至少一个应用于第二终端的通信装置和至少一个应用于第一终端的通信装置。所能获得的技术效果可参考上述方法实施例，在此不再赘述。Based on the above embodiments, the embodiments of the present application further provide a communication system. The communication system includes at least one communication device applied to the second terminal and at least one communication device applied to the first terminal. The technical effects that can be obtained can refer to the above method embodiments, which will not be repeated here.
基于以上实施例，本申请实施例还提供一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序或指令，当指令被执行时，使上述任一实施例中第二终端执行的方法被实施或者第一终端执行的方法被实施。该计算机可读存储介质可以包括：U盘、移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。Based on the above embodiments, the embodiments of the present application further provide a computer-readable storage medium, which stores a computer program or instruction. When the instruction is executed, the method executed by the second terminal in any of the above embodiments is implemented or the method executed by the first terminal is implemented. The computer-readable storage medium may include: a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk, and other media that can store program codes.
为了实现上述图19～图22的通信装置的功能，本申请实施例还提供一种芯片，包括处理器，用于支持该通信装置实现上述方法实施例中第二终端或第一终端所涉及的功能。在一种可能的设计中，该芯片与存储器连接或者该芯片包括存储器，该存储器用于保存该通信装置必要的计算机程序或指令和数据。In order to realize the functions of the communication device of Figures 19 to 22, the embodiment of the present application further provides a chip, including a processor, for supporting the communication device to realize the functions involved in the second terminal or the first terminal in the above method embodiment. In one possible design, the chip is connected to a memory or the chip includes a memory, and the memory is used to store computer programs or instructions and data necessary for the communication device.
本领域内的技术人员应明白，本申请的实施例可提供为方法、***、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.
本申请是参照根据本申请实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图 来描述的。应理解可由计算机程序或指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序或指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present application is a flowchart and/or block diagram of a method, device (system), and computer program product according to an embodiment of the present application. It should be understood that each process and/or box in the flowchart and/or block diagram, as well as the combination of the processes and/or boxes in the flowchart and/or block diagram, can be implemented by a computer program or instruction. These computer programs or instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate a device for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.
这些计算机程序或指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。These computer programs or instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.
这些计算机程序或指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer programs or instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and/or one or more boxes in the block diagram.
应理解，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。此外，本申请中出现的符号“/”可以表示“和/或”，例如A/B表示A和/或B。It should be understood that the term "and/or" in this application is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the symbol "/" appearing in this application can represent "and/or", for example, A/B represents A and/or B.
应理解，在本发明实施例中，“与A对应的B”表示B与A相关联，根据A可以确定B。但还应理解，根据A确定B并不意味着仅仅根据A确定B，还可以根据A和/或其它信息确定B。It should be understood that in the embodiment of the present invention, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and/or other information.
本申请实施例中出现的“多个”是指两个或两个以上。The "plurality" appearing in the embodiments of the present application refers to two or more.
本申请实施例中出现的第一、第二等描述，仅作示意与区分描述对象之用，没有次序之分，也不表示本申请实施例中对描述的对象个数的特别限定，不能构成对本申请实施例的任何限制。The first, second, etc. descriptions appearing in the embodiments of the present application are only used for illustration and distinction of the described objects. There is no order, nor does it indicate any special limitation on the number of described objects in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.
本申请的各个实施例中的内容可以相互参考，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。The contents of the various embodiments of the present application may refer to each other. Unless otherwise specified and there is no logical conflict, the terms and/or descriptions between different embodiments are consistent and may be referenced to each other. The technical features in different embodiments may be combined to form new embodiments according to their internal logical relationships.
可以理解的，本申请实施例中，终端设备和/或网络设备可以执行本申请实施例中的部分或全部步骤，这些步骤或操作仅是示例，本申请实施例中，还可以执行其它操作或者各种操作的变形。此外，各个步骤可以按照本申请实施例呈现的不同的顺序来执行，并且有可能并非要执行本申请实施例中的全部操作。 It is understandable that in the embodiment of the present application, the terminal device and/or the network device can perform some or all of the steps in the embodiment of the present application, and these steps or operations are only examples. In the embodiment of the present application, other operations or variations of various operations can also be performed. In addition, each step can be performed in a different order presented in the embodiment of the present application, and it is possible not to perform all the operations in the embodiment of the present application.

Claims (30)

  1. 一种资源指示方法，其特征在于，包括：A resource indication method, characterized by comprising:
    向第一终端发送侧行链路控制信道PSCCH；所述PSCCH承载侧行链路控制信息SCI，所述SCI用于指示侧行链路共享信道PSSCH的时频资源；Sending a sidelink control channel PSCCH to the first terminal; the PSCCH carries sidelink control information SCI, and the SCI is used to indicate the time-frequency resources of the sidelink shared channel PSSCH;
    向所述第一终端发送侧行参考信号和所述PSSCH；所述PSSCH只承载媒体接入与控制MAC控制元素CE，所述侧行参考信号用于波束训练；所述PSCCH，所述PSSCH和所述侧行参考信号在相同的时隙发送。A sidelink reference signal and the PSSCH are sent to the first terminal; the PSSCH only carries the media access and control MAC control element CE, and the sidelink reference signal is used for beam training; the PSCCH, the PSSCH and the sidelink reference signal are sent in the same time slot.
  2. 根据权利要求1所述的方法，其特征在于，还包括：The method according to claim 1, further comprising:
    选择所述侧行参考信号的时域资源集合，所述时域资源集合包含的时隙中相邻的两个时隙之间的间隔相同。A time domain resource set of the sidelink reference signal is selected, wherein intervals between two adjacent time slots in the time slots included in the time domain resource set are the same.
  3. 根据权利要求1或2所述的方法，其特征在于，所述SCI指示所述侧行参考信号的时域资源集合，所述时域资源集合中相邻的两个时隙之间的间隔相同。The method according to claim 1 or 2 is characterized in that the SCI indicates a time domain resource set of the sidelink reference signal, and the interval between two adjacent time slots in the time domain resource set is the same.
  4. 根据权利要求1～3任一所述的方法，其特征在于，所述SCI包括周期指示信息，所述周期指示信息用于指示周期T；所述侧行参考信号的时域资源集合包括n+k*T，k＝0,1,2,3…；其中，所述n为所述PSCCH的发送时隙的索引。The method according to any one of claims 1 to 3 is characterized in that the SCI includes period indication information, and the period indication information is used to indicate the period T; the time domain resource set of the sidelink reference signal includes n+k*T, k=0,1,2,3...; wherein n is the index of the transmission time slot of the PSCCH.
  5. 根据权利要求4所述的方法，其特征在于，所述T的取值为网络终端配置的、预配置的、所述第一终端配置给第二终端的或第二终端确定的。The method according to claim 4 is characterized in that the value of T is configured by the network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
  6. 根据权利要求1～3任一所述的方法，其特征在于，所述SCI指示所述侧行参考信号的时域资源信息，所述时域资源信息包括Q个时隙偏移量tq，M为大于或等于1的整数，q取遍1至Q的整数；所述侧行参考信号的时域资源集合包括时隙n和时隙n+tq；所述n为所述PSCCH的发送时隙的索引，所述tq大于或等于1；The method according to any one of claims 1 to 3, characterized in that the SCI indicates the time domain resource information of the sidelink reference signal, the time domain resource information includes Q time slot offsets tq , M is an integer greater than or equal to 1, and q is an integer from 1 to Q; the time domain resource set of the sidelink reference signal includes time slot n and time slot n+ tq ; n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1;
    其中，在Q大于1的情况下，所述Q个时隙偏移量中的第q个时隙偏移量tq是所述Q个时隙偏移量中的第1个时隙偏移量t1的q倍；Wherein, when Q is greater than 1, the qth time slot offset tq among the Q time slot offsets is q times the first time slot offset t1 among the Q time slot offsets;
    在Q等于1的情况下，在时隙n+t1发送的SCI指示的时隙偏移量tq’与所述时隙偏移量tq相同。When Q is equal to 1, the time slot offset tq ' indicated by the SCI sent in time slot n+ t1 is the same as the time slot offset tq .
  7. 一种资源指示方法，其特征在于，包括：A resource indication method, characterized by comprising:
    向第一终端发送第一侧行链路控制信道PSCCH；其中，所述第一PSCCH承载第一侧行链路控制信息SCI，所述第一SCI用于指示第一侧行链路共享信道PSSCH的时频资源；Sending a first sidelink control channel PSCCH to the first terminal; wherein the first PSCCH carries first sidelink control information SCI, and the first SCI is used to indicate the time-frequency resources of the first sidelink shared channel PSSCH;
    向所述第一终端发送第一侧行参考信号和所述第一PSSCH，所述第一侧行参考信号用于波束训练，所述第一PSSCH只承载第一媒体接入与控制MAC控制元素CE；所述第一PSCCH，所述第一PSSCH和所述第一侧行参考信号在相同的时隙发送；Sending a first sidelink reference signal and the first PSSCH to the first terminal, where the first sidelink reference signal is used for beam training, and the first PSSCH only carries a first media access and control MAC control element CE; the first PSCCH, the first PSSCH and the first sidelink reference signal are sent in the same time slot;
    向所述第一终端发送第二PSCCH；其中，所述第二PSCCH承载第二SCI，所述第二SCI用于指示所述第二PSSCH的时频资源；Sending a second PSCCH to the first terminal; wherein the second PSCCH carries a second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH;
    向所述第一终端发送第二侧行参考信号和第二PSSCH，所述第二侧行参考信号用于波束训练，所述第二PSSCH承载第二MAC CE和MAC协议数据单元PDU；所述第二PSCCH、所述第二PSSCH和所述第二侧行参考信号在相同的时隙发送。A second sidelink reference signal and a second PSSCH are sent to the first terminal, the second sidelink reference signal is used for beam training, and the second PSSCH carries a second MAC CE and a MAC protocol data unit PDU; the second PSCCH, the second PSSCH and the second sidelink reference signal are sent in the same time slot.
  8. 根据权利要求7所述的方法，其特征在于，还包括：The method according to claim 7, further comprising:
    选择所述第一侧行参考信号和所述第二侧行参考信号的第一时域资源集合，所述第一时域资源集合包含的时隙中相邻的两个时隙之间的间隔相同。A first time domain resource set for the first sidelink reference signal and the second sidelink reference signal is selected, wherein intervals between two adjacent time slots in the time slots included in the first time domain resource set are the same.
  9. 根据权利要求7或8所述的方法，其特征在于，所述第一SCI和所述第二SCI指示所述第一侧 行参考信号和所述第二侧行参考信号的第一时域资源集合，所述第一时域资源集合包含的时隙中相邻的两个时隙之间的间隔相同。The method according to claim 7 or 8, characterized in that the first SCI and the second SCI indicate the first side A first time domain resource set for the row reference signal and the second side row reference signal, wherein the intervals between two adjacent time slots in the time slots included in the first time domain resource set are the same.
  10. 根据权利要求7～9任一所述的方法，其特征在于，所述第一SCI指示所述第一侧行参考信号的第二时域资源集合，所述第二SCI指示所述第二侧行参考信号的第三时域资源集合；The method according to any one of claims 7 to 9, characterized in that the first SCI indicates a second time domain resource set of the first sideline reference signal, and the second SCI indicates a third time domain resource set of the second sideline reference signal;
    所述第二时域资源集合与所述第三时域资源集合组成的并集包含的时隙中相邻的两个时隙之间的间隔相同。The interval between two adjacent time slots in the time slots included in the union of the second time domain resource set and the third time domain resource set is the same.
  11. 根据权利要求10所述的方法，其特征在于，所述第二SCI包括周期指示信息，所述周期指示信息用于指示周期T；所述第二侧行参考信号的第三时域资源集合包括时隙n+k*T，k＝0,1,2,3…；其中，所述n为所述第二PSCCH的发送时隙的索引。The method according to claim 10 is characterized in that the second SCI includes period indication information, and the period indication information is used to indicate the period T; the third time domain resource set of the second side reference signal includes time slot n+k*T, k=0,1,2,3...; wherein n is the index of the transmission time slot of the second PSCCH.
  12. 根据权利要求11所述的方法，其特征在于，所述T的取值为网络终端配置的、预配置的、所述第一终端配置给第二终端的或第二终端确定的。The method according to claim 11 is characterized in that the value of T is configured by the network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
  13. 根据权利要求11所述的方法，其特征在于，所述第一SCI指示所述第一侧行参考信号的时域资源信息，所述时域资源信息包括Q个时隙偏移量tq，Q为大于或等于1的整数，q取遍1至Q的整数；所述第一侧行参考信号的第二时域资源集合包括时隙n和时隙n+tq；所述n为所述PSCCH的发送时隙的索引，所述tq大于或等于1；The method according to claim 11, characterized in that the first SCI indicates the time domain resource information of the first sidelink reference signal, the time domain resource information includes Q time slot offsets tq , Q is an integer greater than or equal to 1, and q takes an integer from 1 to Q; the second time domain resource set of the first sidelink reference signal includes time slot n and time slot n+ tq ; n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1;
    其中，在Q大于1的情况下，所述时隙n和时隙n+tq以及所述时隙n+k*T组成的集合中，相邻的两个时隙之间的间隔相同；Wherein, when Q is greater than 1, in the set consisting of the time slot n, the time slot n+t q, and the time slot n+k*T, the intervals between two adjacent time slots are the same;
    在Q等于1的情况下，所述时隙n和时隙n+tq以及所述时隙n+k*T组成的集合中，相邻的两个时隙之间的间隔相同。When Q is equal to 1, in the set consisting of the time slot n, the time slot n+t q and the time slot n+k*T, the intervals between two adjacent time slots are the same.
  14. 一种资源指示方法，其特征在于，包括：A resource indication method, characterized by comprising:
    接收来自第二终端的侧行链路控制信道PSCCH；所述PSCCH承载侧行链路控制信息SCI，所述SCI用于指示侧行链路共享信道PSSCH的时频资源；Receiving a sidelink control channel PSCCH from a second terminal; the PSCCH carries sidelink control information SCI, and the SCI is used to indicate time-frequency resources of a sidelink shared channel PSSCH;
    接收来自所述第二终端的侧行参考信号和所述PSSCH；所述PSSCH只承载媒体接入与控制MAC控制元素CE，所述侧行参考信号用于波束训练；所述PSCCH，所述PSSCH和所述侧行参考信号在相同的时隙发送。Receive the sidelink reference signal and the PSSCH from the second terminal; the PSSCH only carries the media access and control MAC control element CE, and the sidelink reference signal is used for beam training; the PSCCH, the PSSCH and the sidelink reference signal are sent in the same time slot.
  15. 根据权利要求14所述的方法，其特征在于，所述SCI指示所述侧行参考信号的时域资源集合，所述时域资源集合中相邻的两个时隙之间的间隔相同。The method according to claim 14 is characterized in that the SCI indicates a time domain resource set of the sidelink reference signal, and the interval between two adjacent time slots in the time domain resource set is the same.
  16. 根据权利要求14或15所述的方法，其特征在于，所述SCI包括周期指示信息，所述周期指示信息用于指示周期T；所述侧行参考信号的时域资源集合包括n+k*T，k＝0,1,2,3…；其中，所述n为所述PSCCH的发送时隙的索引。The method according to claim 14 or 15 is characterized in that the SCI includes period indication information, and the period indication information is used to indicate the period T; the time domain resource set of the sidelink reference signal includes n+k*T, k=0,1,2,3...; wherein n is the index of the transmission time slot of the PSCCH.
  17. 根据权利要求16所述的方法，其特征在于，所述T的取值为网络终端配置的、预配置的、第一终端配置给所述第二终端的或所述第二终端确定的。The method according to claim 16 is characterized in that the value of T is configured by a network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
  18. 根据权利要求14或15所述的方法，其特征在于，所述SCI指示所述侧行参考信号的时域资源信息，所述时域资源信息包括Q个时隙偏移量tq，Q为大于或等于1的整数，q取遍1至Q的整数；所述侧行参考信号的时域资源集合包括时隙n和时隙n+tq；所述n为所述PSCCH的发送时隙的索引，所述tq大于或等于1；The method according to claim 14 or 15, characterized in that the SCI indicates the time domain resource information of the sidelink reference signal, the time domain resource information includes Q time slot offsets tq , Q is an integer greater than or equal to 1, and q takes an integer from 1 to Q; the time domain resource set of the sidelink reference signal includes time slot n and time slot n+ tq ; n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1;
    其中，在Q大于1的情况下，所述Q个时隙偏移量中的第q个时隙偏移量tq是所述Q个时隙偏移量中的第1个时隙偏移量t1的q倍；Wherein, when Q is greater than 1, the qth time slot offset tq among the Q time slot offsets is q times the first time slot offset t1 among the Q time slot offsets;
    在Q等于1的情况下，在时隙n+t1发送的SCI指示的时隙偏移量tq’与所述时隙偏移量tq相同。 When Q is equal to 1, the time slot offset tq ' indicated by the SCI sent in time slot n+ t1 is the same as the time slot offset tq .
  19. 一种资源指示方法，其特征在于，包括：A resource indication method, characterized by comprising:
    接收来自第二终端的第一侧行链路控制信道PSCCH；其中，所述第一PSCCH承载第一侧行链路控制信息SCI，所述第一SCI用于指示第一侧行链路共享信道PSSCH的时频资源；Receive a first sidelink control channel PSCCH from the second terminal; wherein the first PSCCH carries first sidelink control information SCI, and the first SCI is used to indicate the time-frequency resources of the first sidelink shared channel PSSCH;
    接收来自所述第二终端的第一侧行参考信号和所述第一PSSCH，所述第一侧行参考信号用于波束训练，所述第一PSSCH只承载第一媒体接入与控制MAC控制元素CE；所述第一PSCCH，所述第一PSSCH和所述第一侧行参考信号在相同的时隙发送；Receive a first sidelink reference signal and the first PSSCH from the second terminal, where the first sidelink reference signal is used for beam training, and the first PSSCH carries only a first media access and control MAC control element CE; the first PSCCH, the first PSSCH and the first sidelink reference signal are sent in the same time slot;
    接收来自所述第二终端的第二PSCCH；其中，所述第二PSCCH承载第二SCI，所述第二SCI用于指示所述第二PSSCH的时频资源；Receiving a second PSCCH from the second terminal; wherein the second PSCCH carries a second SCI, and the second SCI is used to indicate the time-frequency resources of the second PSSCH;
    接收来自所述第二终端的第二侧行参考信号和第二PSSCH，所述第二侧行参考信号用于波束训练，所述第二PSSCH承载第二MAC CE和MAC协议数据单元PDU；所述第二PSCCH、所述第二PSSCH和所述第二侧行参考信号在相同的时隙发送。A second sidelink reference signal and a second PSSCH are received from the second terminal, wherein the second sidelink reference signal is used for beam training, and the second PSSCH carries a second MAC CE and a MAC protocol data unit PDU; the second PSCCH, the second PSSCH and the second sidelink reference signal are sent in the same time slot.
  20. 根据权利要求19所述的方法，其特征在于，所述第一SCI和所述第二SCI指示所述第一侧行参考信号和所述第二侧行参考信号的第一时域资源集合，所述第一时域资源集合包含的时隙中相邻的两个时隙之间的间隔相同。The method according to claim 19 is characterized in that the first SCI and the second SCI indicate a first time domain resource set of the first sidelink reference signal and the second sidelink reference signal, and the intervals between two adjacent time slots in the time slots included in the first time domain resource set are the same.
  21. 根据权利要求19或20所述的方法，其特征在于，所述第一SCI指示所述第一侧行参考信号的第二时域资源集合，所述第二SCI指示所述第二侧行参考信号的第三时域资源集合；The method according to claim 19 or 20, characterized in that the first SCI indicates a second time domain resource set of the first sideline reference signal, and the second SCI indicates a third time domain resource set of the second sideline reference signal;
    所述第二时域资源集合与所述第三时域资源集合组成的并集包含的时隙中相邻的两个时隙之间的间隔相同。The interval between two adjacent time slots in the time slots included in the union of the second time domain resource set and the third time domain resource set is the same.
  22. 根据权利要求21所述的方法，其特征在于，所述第二SCI包括周期指示信息，所述周期指示信息用于指示周期T；所述第二侧行参考信号的第三时域资源集合包括时隙n+k*T，k＝0,1,2,3…；其中，所述n为所述第二PSCCH的发送时隙的索引。The method according to claim 21 is characterized in that the second SCI includes period indication information, and the period indication information is used to indicate the period T; the third time domain resource set of the second side reference signal includes time slot n+k*T, k=0,1,2,3...; wherein n is the index of the transmission time slot of the second PSCCH.
  23. 根据权利要求22所述的方法，其特征在于，所述T的取值为网络终端配置的、预配置的、第一终端配置给所述第二终端的或所述第二终端确定的。The method according to claim 22 is characterized in that the value of T is configured by the network terminal, pre-configured, configured by the first terminal to the second terminal, or determined by the second terminal.
  24. 根据权利要求22所述的方法，其特征在于，所述第一SCI指示所述第一侧行参考信号的时域资源信息，所述时域资源信息包括Q个时隙偏移量tq，Q为大于或等于1的整数，q取遍1至Q的整数；所述第一侧行参考信号的第二时域资源集合包括时隙n和时隙n+tq；所述n为所述PSCCH的发送时隙的索引，所述tq大于或等于1；The method according to claim 22, characterized in that the first SCI indicates the time domain resource information of the first sidelink reference signal, the time domain resource information includes Q time slot offsets tq , Q is an integer greater than or equal to 1, and q is an integer from 1 to Q; the second time domain resource set of the first sidelink reference signal includes time slot n and time slot n+ tq ; n is the index of the transmission time slot of the PSCCH, and tq is greater than or equal to 1;
    其中，在Q大于1的情况下，所述时隙N和时隙n+tq以及所述时隙n+k*T组成的集合中，相邻的两个时隙之间的间隔相同；Wherein, when Q is greater than 1, in the set consisting of the time slot N, the time slot n+t q , and the time slot n+k*T, the intervals between two adjacent time slots are the same;
    在Q等于1的情况下，所述时隙n和时隙n+tq以及所述时隙n+k*T组成的集合中，相邻的两个时隙之间的间隔相同。When Q is equal to 1, in the set consisting of the time slot n, the time slot n+t q and the time slot n+k*T, the intervals between two adjacent time slots are the same.
  25. 一种通信装置，其特征在于，包括用于执行如权利要求1～6中任一项所述的方法的单元，或者包括用于执行如权利要求7～13中任一项所述的方法的单元。A communication device, characterized by comprising a unit for executing the method according to any one of claims 1 to 6, or comprising a unit for executing the method according to any one of claims 7 to 13.
  26. 一种通信装置，其特征在于，包括用于执行如权利要求14～18中任一项所述的方法的单元，或者包括用于执行如权利要求19～24中任一项所述的方法的单元。A communication device, characterized by comprising a unit for executing the method according to any one of claims 14 to 18, or comprising a unit for executing the method according to any one of claims 19 to 24.
  27. 一种通信装置，其特征在于，包括：处理器和存储器；A communication device, characterized by comprising: a processor and a memory;
    所述存储器，用于存储计算机程序或指令；The memory is used to store computer programs or instructions;
    所述处理器，用于执行存储器中的计算机程序或指令，使所述装置执行如权利要求1～6中任一项所述的方法，或使所述装置执行如权利要求7～13中任一项所述的方法，或使所述装置执行如权利要求14～18中任一项所述的方法，或使所述装置执行如权利要求19～24中任一项所述的方法。 The processor is used to execute the computer program or instructions in the memory, so that the device performs the method according to any one of claims 1 to 6, or the method according to any one of claims 7 to 13, or the method according to any one of claims 14 to 18, or the method according to any one of claims 19 to 24.
  28. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令在被电子装置调用时，使所述电子装置执行如权利要求1～6中任一项所述的方法，或使所述电子装置执行如权利要求7～13中任一项所述的方法，或使所述电子装置执行如权利要求14～18中任一项所述的方法，或使所述电子装置执行如权利要求19～24中任一项所述的方法。A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions, and when the computer-executable instructions are called by an electronic device, the electronic device executes the method as described in any one of claims 1 to 6, or the electronic device executes the method as described in any one of claims 7 to 13, or the electronic device executes the method as described in any one of claims 14 to 18, or the electronic device executes the method as described in any one of claims 19 to 24.
  29. 一种计算机程序产品，其特征在于，包括计算机执行指令，当所述计算机执行指令在计算机上运行时，使得所述计算机执行如权利要求1～6中任一项所述的方法，或使所述电子装置执行如权利要求7～13中任一项所述的方法，或使所述电子装置执行如权利要求14～18中任一项所述的方法，或使所述电子装置执行如权利要求19～24中任一项所述的方法。A computer program product, characterized in that it includes computer execution instructions, which, when executed on a computer, cause the computer to execute the method as claimed in any one of claims 1 to 6, or cause the electronic device to execute the method as claimed in any one of claims 7 to 13, or cause the electronic device to execute the method as claimed in any one of claims 14 to 18, or cause the electronic device to execute the method as claimed in any one of claims 19 to 24.
  30. 一种通信***，其特征在于，包括如权利要求25所述的通信装置和如权利要求26所述的通信装置。 A communication system, characterized by comprising the communication device as claimed in claim 25 and the communication device as claimed in claim 26.
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