WO2022198666A1 - 一种通信方法、终端装置及*** - Google Patents
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- WO2022198666A1 WO2022198666A1 PCT/CN2021/083402 CN2021083402W WO2022198666A1 WO 2022198666 A1 WO2022198666 A1 WO 2022198666A1 CN 2021083402 W CN2021083402 W CN 2021083402W WO 2022198666 A1 WO2022198666 A1 WO 2022198666A1
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- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
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Definitions
- the present application relates to the field of wireless communication technologies, and in particular, to a communication method, a terminal device, and a system.
- the direct communication between the terminal device and the terminal device can be called sideline communication.
- the terminal device serving as the transmitting end can send sidelink control information to the terminal device serving as the receiving end through a sidelink (Sidelink, SL).
- SL sidelink
- At least one kind of SL information such as (sidelink control information, SCI), sideline data, feedback information, and reference signals.
- SCI sidelink control information
- the terminal device at the receiving end receives and decodes the sideline data by receiving the SCI.
- the SCI is carried on the physical sidelink control channel (PSCCH), and the sidelink data can be carried on the physical sidelink shared channel (PSSCH).
- PSSCH physical sidelink shared channel
- the receiving end can decode the sideline data carried on the PSSCH only after correctly decoding the SCI carried on the PSCCH.
- the terminal device needs to perform automatic gain control (automatic gain control, AGC) processing, so that the receiving terminal device can adjust the strength of the received signal to the strength required for accurate decoding.
- AGC automatic gain control
- the AGC mechanism requires the terminal device at the transmitting end to send the AGC information at the start symbol of the time slot, for example, the first symbol used for sidelink communication in the time slot, and the terminal device at the receiving end performs AGC according to the AGC information in order to receive correct reception.
- SCI receive sideline data according to SCI.
- the terminal device since the position of the AGC information in one time slot is fixed as the start symbol for sidelink communication, when the terminal device accesses after the start symbol for sidelink communication in one time slot channel, the terminal device can only wait for the next time slot to perform sidelink communication, resulting in increased sidelink communication delay.
- the present application provides a communication method, terminal device and system for reducing the delay of sidelink communication.
- an embodiment of the present application provides a communication method, and the method can be executed by a first terminal device and/or a second terminal device.
- the first terminal device and/or the second terminal device may be a terminal or a component in a terminal such as a processor, a chip or a chip system, and the like.
- the first end device and the second end device support sidelink communication.
- the first terminal device and/or the second terminal device may acquire the first configuration information, and determine at least two consecutive candidate resources in the first time slot according to the first configuration information.
- the candidate resource includes multiple consecutive symbols, and the multiple symbols include at least one first symbol and at least one second symbol.
- the first symbol is used to transmit first information
- the second symbol is used to transmit sidelink control information
- the first symbol precedes the second symbol.
- the first terminal device and/or the second terminal device may determine candidate resources according to the first configuration information, and perform sidelink communication according to the candidate resources. Since the first symbol in any candidate resource can be used for sending the first information, even if the channel access time of the first terminal device is located after the start time of the first symbol in one candidate resource of the first time slot, The first terminal device can also send the first information according to the first symbols of other candidate resources after the channel access time without waiting for the next time slot of the first time slot, so the sidelink communication delay can be reduced .
- the first configuration information includes information on the number of consecutive second symbols in the candidate resource.
- the first terminal device may also send the first information in the first symbol of the first candidate resource, and send the sidelink control information in the second symbol of the first candidate resource, the first candidate resource is the first candidate resource among the candidate resources after the first time, the first time is the channel access time of the first terminal device, and the first time is in the first time slot.
- the first terminal device may also send the second information between the first moment and the start moment of the first candidate resource.
- the channel already accessed by the first terminal device can be prevented from being occupied by other terminal devices, and the transmission delay can be further reduced.
- the second information includes duplicate information of the first information, duplicate information of the side link control information, an extended cyclic prefix of the first information, or an extended cyclic prefix of the side link control information.
- the first terminal device may also send third information on the first resource, the first resource includes the first symbol and/or the second symbol after the first candidate resource, and the third information is carried on the side in the uplink data channel.
- the second terminal device may blindly detect the sidelink control information on the second symbol.
- the second terminal device may stop blindly detecting the sidelink control information on the candidate resources in the first time slot to reduce processing overhead.
- the second time is the time when the second terminal device obtains the sidelink control information carried by the second symbol in the first candidate resource, and the first candidate resource is one of the candidate resources.
- the first candidate resource is one of the candidate resources.
- the second terminal device may also decode the information carried on the second symbol of the ith candidate resource according to the result of the automatic gain control adjustment.
- the second terminal device may further store at least one piece of fourth information, where the fourth information is on the first symbol and the second symbol of the j-th candidate resource in the candidate resources before the second moment in time carried information to improve transmission reliability.
- fourth information is on the first symbol and the second symbol of the j-th candidate resource in the candidate resources before the second moment in time carried information to improve transmission reliability.
- j 2, 3...n
- n is the number of candidate resources located in the first time slot before the second time
- the second time is the second terminal device obtained by the second symbol in the first candidate resource.
- the first candidate resource is one of the candidate resources.
- the second communication apparatus may further decode the fourth information after the first candidate resource and the information after the last fourth information according to the sidelink control information.
- an embodiment of the present application provides a communication method, and the method may be executed by a network device or a component in the network device, such as a processor, a chip, or a chip system.
- the network device supports configuring communication resources for sidelink communication.
- the following description takes the network device as the execution subject as an example.
- the network device may determine first configuration information, where the first configuration information is used to indicate at least two candidate resources in the first time slot, the candidate resources include a plurality of consecutive symbols, and the plurality of symbols include at least one A first symbol for transmitting first information and at least one second symbol for transmitting sidelink control information, the first symbol preceding the second symbol.
- the network device can also be used to send the first configuration information.
- the first configuration information includes information on the number of consecutive second symbols in the candidate resource.
- an embodiment of the present application provides a communication method, and the method can be executed by a first terminal device.
- the first communication device reference may be made to the description in the first aspect.
- the first terminal device may transmit the first information in the first symbol of the first candidate resource, and transmit the sidelink control information in the second symbol of the first candidate resource, the first candidate resource is after the first time instant
- the first moment is the channel access moment of the first terminal device, and the first moment is in the first time slot.
- the first terminal device may also send the second information between the first moment and the start moment of the first candidate resource.
- the channel already accessed by the first terminal device can be prevented from being occupied by other terminal devices, and the transmission delay can be further reduced.
- the second information includes duplicate information of the first information, duplicate information of the side link control information, an extended cyclic prefix of the first information, or an extended cyclic prefix of the side link control information.
- the first terminal device may also send third information on the first resource, the first resource includes the first symbol and/or the second symbol after the first candidate resource, and the third information is carried on the side in the uplink data channel.
- first symbols and/or second symbols involved in the third aspect reference may be made to the descriptions in the first aspect.
- an embodiment of the present application provides a communication method, and the method can be executed by a second terminal device.
- the second communication device may refer to the description in the first aspect.
- the second terminal device can blindly detect the sidelink control information on the second symbol.
- the second terminal device may stop blindly detecting the sidelink control information on the candidate resources in the first time slot.
- the second time is the time when the second terminal device obtains the sidelink control information carried by the second symbol in the first candidate resource, and the first candidate resource is one of the candidate resources.
- the first candidate resource is one of the candidate resources.
- the second terminal device may also decode the information carried on the second symbol of the ith candidate resource according to the result of the automatic gain control adjustment.
- the second terminal device may further store at least one piece of fourth information, where the fourth information is on the first symbol and the second symbol of the j-th candidate resource in the candidate resources before the second moment in time carried information.
- the fourth information is on the first symbol and the second symbol of the j-th candidate resource in the candidate resources before the second moment in time carried information.
- j 2, 3...n
- n is the number of candidate resources located in the first time slot before the second time
- the second time is the second terminal device obtained by the second symbol in the first candidate resource.
- the first candidate resource is one of the candidate resources.
- the second communication apparatus may further decode the fourth information after the first candidate resource and the information after the last fourth information according to the sidelink control information.
- the candidate resource the first symbol and/or the second symbol involved in the fourth aspect, reference may be made to the description in the first aspect.
- an embodiment of the present application provides a communication device, which can implement the method implemented by the first communication device and/or the second communication device in the first aspect or any possible design thereof.
- the apparatus comprises corresponding modules or units or components for carrying out the above-mentioned methods.
- the modules included in the apparatus may be implemented by software and/or hardware.
- the device may be, for example, a first communication device and/or a second communication device, or a component or a baseband chip, a chip system, or a processor that can support the first communication device and/or the second communication device to implement the above method.
- the communication device may include a transceiver module or a communication module, and a processing module or a processing unit and other modular components, and these modules may implement the first communication device and/or the first communication device and/or the first aspect or any possible design thereof.
- the transceiver module may be a transmitter or a receiver, or a transceiver obtained by integrating a transmitter and a receiver; the transceiver module may be a transmission module or a reception module, or It is obtained by integrating the sending module and the receiving module.
- the transceiver module may include a communication interface, an antenna and/or a radio frequency circuit, etc., and the processing module may be a processor, such as a baseband chip.
- the transceiver module may be a radio frequency module or a communication interface, and the processing module may be a processor.
- the transceiver module may be an input/output interface of the system-on-chip, and the processing module may be a processor of the system-on-chip, such as a central processing unit (CPU).
- CPU central processing unit
- the communication device when the communication device is implemented by a software module, the communication device may include a transceiver module and/or a processing module.
- the communication device when the communication device is implemented by hardwareized components, the communication device may include a transceiver and/or a processor.
- a transceiver module or transceiver may be used to perform the actions of receiving and/or sending performed by the first communication device and/or the second communication device in the first aspect or any possible designs thereof.
- a processing module or processor may be used to perform actions other than receiving and transmitting performed by the first communication device and/or the second communication device in the first aspect or any possible designs thereof.
- the transceiver module can be used to acquire the first configuration information
- the processing module can be used to determine at least two consecutive candidate resources in the first time slot according to the first configuration information.
- the transceiver module is further configured to send the first information in the first symbol of the first candidate resource, and send the sidelink control information in the second symbol of the first candidate resource.
- first information and the sidelink control information reference may be made to the description in the first aspect.
- the transceiver module may also be configured to send the second information between the first moment and the start moment of the first candidate resource.
- the first candidate resource, the first moment, and the second information reference may be made to the description in the first aspect.
- the transceiver module may also be configured to send third information on the first resource, and reference may be made to the description in the first aspect for the first resource and the third information.
- the transceiver module may be configured to blindly detect sidelink control information on the second symbol.
- the transceiver module may stop blindly detecting the sidelink control information on the candidate resources in the first time slot.
- the transceiver module may stop blindly detecting the sidelink control information on the candidate resources in the first time slot.
- the transceiver module may be further configured to perform automatic gain control adjustment according to the information carried on the first symbol of the i-th candidate resource in the candidate resources before the second moment, and adjust according to the automatic gain control The result of decoding the information carried on the second symbol of the ith candidate resource.
- i can refer to the description in the first aspect.
- the processing module may be used to store at least one fourth piece of information.
- fourth information reference may be made to the description in the first aspect.
- the transceiver module is further configured to decode the fourth information after the first candidate resource and the information after the last fourth information according to the sidelink control information.
- an embodiment of the present application provides a communication apparatus, which can implement the method implemented by a network device in the second aspect or any possible design thereof.
- the apparatus comprises corresponding modules or units or components for carrying out the above-mentioned methods.
- the modules included in the apparatus may be implemented by software and/or hardware.
- the apparatus may be, for example, a network device, or a component or a baseband chip, a system-on-chip, or a processor that can support the network device to implement the above method.
- the communication apparatus may include a transceiver module or a communication module, and a processing module or a processing unit and other modular components, and these modules may perform the corresponding functions of the network device in the second aspect or any possible design thereof.
- the transceiver module can be a transmitter or a receiver, or a transceiver obtained by integrating a transmitter and a receiver; the transceiver module can be a sending module or a receiving module, or a sending module and a receiving module integrated.
- the transceiver module may include a communication interface, an antenna and/or a radio frequency circuit, and the like, and the processing module may be a processor, such as a baseband chip.
- the transceiver module may be a radio frequency module or a communication interface, and the processing module may be a processor.
- the transceiver module may be an input and output interface of the chip system, and the processing module may be a processor of the chip system, such as a central processing unit.
- the communication device when the communication device is implemented by a software module, the communication device may include a transceiver module and/or a processing module.
- the communication device when the communication device is implemented by hardwareized components, the communication device may include a transceiver and/or a processor.
- a transceiving module or transceiver may be used to perform the actions of receiving and/or transmitting performed by the network device in the second aspect or any possible designs thereof.
- a processing module or processor may be used to perform actions other than receiving and transmitting performed by the network device in the second aspect or any possible designs thereof.
- the processing module can be used to determine the first configuration information
- the sending module can be used to send the first configuration information.
- first configuration information reference may be made to the description in the first aspect.
- an embodiment of the present application provides a communication apparatus, which can implement the method implemented by the first communication apparatus in the third aspect or any possible design thereof.
- the apparatus comprises corresponding modules or units or components for carrying out the above-mentioned methods.
- the modules included in the apparatus may be implemented by software and/or hardware.
- the device may be, for example, a first communication device, or a component or a baseband chip, a chip system, or a processor that can support the first communication device to implement the above method.
- the communication device may include a transceiver module or a communication module, and a processing module or a processing unit and other modular components, and these modules may perform the corresponding functions of the first communication device in the third aspect or any possible design thereof.
- the transceiver module may be a transmitter or a receiver, or a transceiver obtained by integrating a transmitter and a receiver; the transceiver module may be a sending module or a receiving module, or a sending module and a receiving module are integrated. of.
- the transceiver module may include a communication interface, an antenna and/or a radio frequency circuit, and the like, and the processing module may be a processor, such as a baseband chip.
- the transceiver module may be a radio frequency module or a communication interface, and the processing module may be a processor.
- the transceiver module may be an input and output interface of the chip system, and the processing module may be a processor of the chip system, such as a central processing unit.
- the communication device when the communication device is implemented by a software module, the communication device may include a transceiver module and/or a processing module.
- the communication device when the communication device is implemented by hardwareized components, the communication device may include a transceiver and/or a processor.
- a transceiving module or transceiver may be used to perform the actions of receiving and/or transmitting performed by the first communication device in the third aspect or any possible designs thereof.
- a processing module or processor may be used to perform actions other than receiving and transmitting performed by the first communication device in the third aspect or any possible designs thereof.
- the transceiving module can be configured to transmit the first information in the first symbol of the first candidate resource, and transmit the sidelink control information in the second symbol of the first candidate resource.
- first information and the sidelink control information reference may be made to the description in the first aspect.
- the transceiver module may also be configured to send the second information between the first moment and the start moment of the first candidate resource.
- the first candidate resource, the first moment, and the second information reference may be made to the description in the first aspect.
- the transceiver module may also be configured to send third information on the first resource, and reference may be made to the description in the first aspect for the first resource and the third information.
- an embodiment of the present application provides a communication device, which can implement the method implemented by the second communication device in the fourth aspect or any possible design thereof.
- the apparatus comprises corresponding modules or units or components for carrying out the above-mentioned methods.
- the modules included in the apparatus may be implemented by software and/or hardware.
- the device may be, for example, a second communication device, or a component or a baseband chip, a chip system, or a processor that can support the second communication device to implement the above method.
- the communication device may include a transceiver module or a communication module, and a processing module or a processing unit and other modular components, and these modules may perform the corresponding functions of the second communication device in the fourth aspect or any possible design thereof.
- the transceiver module can be a transmitter or a receiver, or a transceiver obtained by integrating a transmitter and a receiver; the transceiver module can be a sending module or a receiving module, or a sending module and a receiving module are integrated. of.
- the transceiver module may include a communication interface, an antenna and/or a radio frequency circuit, and the like, and the processing module may be a processor, such as a baseband chip.
- the transceiver module may be a radio frequency module or a communication interface, and the processing module may be a processor.
- the transceiver module may be an input and output interface of the chip system, and the processing module may be a processor of the chip system, such as a central processing unit.
- the communication device when the communication device is implemented by a software module, the communication device may include a transceiver module and/or a processing module.
- the communication device when the communication device is implemented by hardwareized components, the communication device may include a transceiver and/or a processor.
- a transceiving module or transceiver may be used to perform the actions of receiving and/or transmitting performed by the second communication device in the fourth aspect or any possible designs thereof.
- a processing module or processor may be used to perform actions other than receiving and transmitting performed by the second communication device in the fourth aspect or any possible designs thereof.
- the transceiving module can be configured to blindly detect the sidelink control information on the second symbol.
- the transceiver module may stop blindly detecting the sidelink control information on the candidate resources in the first time slot.
- the transceiver module may stop blindly detecting the sidelink control information on the candidate resources in the first time slot.
- the transceiver module may be further configured to perform automatic gain control adjustment according to the information carried on the first symbol of the i-th candidate resource in the candidate resources before the second moment, and adjust according to the automatic gain control The result of decoding the information carried on the second symbol of the ith candidate resource.
- i can refer to the description in the first aspect.
- the processing module may be used to store at least one fourth piece of information.
- fourth information reference may be made to the description in the first aspect.
- the transceiver module is further configured to decode the fourth information after the first candidate resource and the information after the last fourth information according to the sidelink control information.
- a communication system in a ninth aspect, includes the communication apparatus shown in the fifth to sixth aspects, that is, includes a first communication apparatus and/or a second communication apparatus for executing the method shown in the first aspect an apparatus, and a network device for performing the method of the second aspect.
- the communication system may include the communication devices shown in the seventh to the eighth aspects, that is, including the first communication device for executing the method shown in the third aspect, and the first communication device for executing the method shown in the fourth aspect. 2. Communication device.
- a computer-readable storage medium is provided, the computer-readable storage medium is used to store computer instructions, and when the computer instructions are executed on a computer, the computer is made to execute the above-mentioned first to fourth aspects or any of them.
- An eleventh aspect provides a computer program product comprising instructions, the computer program product is used to store computer instructions, when the computer instructions are executed on a computer, the computer is made to execute the above-mentioned first to fourth aspects or any of them The method shown in one possible implementation.
- a twelfth aspect provides a circuit coupled to a memory, the circuit being used to perform the method shown in the above-mentioned first to fourth aspects or any one of possible implementations thereof.
- the circuit may comprise a chip and/or chip circuitry.
- FIG. 1 is an example diagram of a scenario of sidelink communication provided by an embodiment of the present application
- FIG. 2 is a schematic diagram of network coverage of sidelink communication according to an embodiment of the present application.
- FIG. 3 is a schematic diagram of a comparison between a physical time slot and a logical time slot according to an embodiment of the present application
- FIG. 4 is a schematic diagram of an AGC position provided by an embodiment of the present application.
- FIG. 5 is a schematic diagram of a communication device according to an embodiment of the present application.
- FIG. 6 is a schematic diagram of another communication device provided by an embodiment of the present application.
- FIG. 7 is a schematic flowchart of a method provided by an embodiment of the present application.
- FIG. 8 is a schematic structural diagram of a candidate resource provided by an embodiment of the present application.
- FIG. 10 is a schematic diagram of resources for sending by a terminal device according to an embodiment of the present application.
- FIG. 11 is a schematic diagram of resources sent by another terminal device according to an embodiment of the present application.
- FIG. 12 is a schematic diagram of resources for sending by another terminal device according to an embodiment of the present application.
- a terminal device such as a terminal device, or a module for realizing the functions of the terminal device, such as a chip system, and the chip system can be set in the terminal device.
- the terminal device includes a device that provides data connectivity to a user, specifically, includes a device that provides data connectivity to a user, or includes a device that provides data connectivity to a user. For example, it may include a handheld device with wireless connectivity, or a processing device connected to a wireless modem.
- the terminal equipment can communicate with the core network via a radio access network (RAN), exchange data with the RAN, or exchange voice and data with the core network.
- RAN radio access network
- the terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) terminal equipment, vehicle to everything (V2X) communication End devices, machine-to-machine/machine-type communications (M2M/MTC) end devices, Internet of things (IoT) end devices.
- UE user equipment
- D2D device-to-device
- V2X vehicle to everything
- M2M/MTC machine-to-machine/machine-type communications
- IoT Internet of things
- the terminal device may be a vehicle, a ship, or an aircraft, or a terminal-type roadside unit, or a communication module or chip built into the vehicle or roadside unit.
- direct communication (PC5) interface communication is supported between terminal devices, that is, transmission through a side link is supported.
- the terminal device may also be a wearable device.
- Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. Wait.
- a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
- wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones.
- Use such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.
- the various terminal devices described above if they are located on the vehicle, for example, placed in the vehicle or installed in the vehicle, can be considered to be on-board terminal equipment.
- the on-board terminal equipment is also called an on-board unit (OBU).
- OBU on-board unit
- the terminal device may further include a relay (relay).
- a relay relay
- any device capable of data communication with the base station can be regarded as a terminal device.
- a roadside unit can also be regarded as a terminal device.
- the communication method provided by the embodiment of the present application may be described by taking a terminal device as an example.
- the side that transmits sideline data may be referred to as a sender terminal device, and the side used for sideline data reception may be referred to as a receiver terminal device.
- the terminal device at the transmitting end is referred to as the first terminal device, and the terminal device at the receiving end is referred to as the second terminal device.
- Network equipment including, for example, access network (AN) equipment, such as a base station, may refer to equipment in the access network that communicates with terminal devices through one or more cells over the air interface, or, for example, a V2X technology
- the network equipment in is a roadside unit (RSU).
- the RSU can be a fixed infrastructure entity supporting V2X applications and can exchange messages with other entities supporting V2X applications.
- the network equipment may include an Evolved Universal Terrestrial Radio Access Network Node B (E-UTRAN Node B, eNB), a next generation Node B (next generation node B) in the fifth generation mobile communication technology (the 5th generation, 5G) NR system, gNB), or may also include a centralized unit (centralized unit, CU) and a distributed unit (distributed unit, DU) in a cloud radio access network (cloud radio access network, Cloud RAN) system, the embodiment of the present application is not limited .
- the network devices described refer to access network devices.
- network equipment and/or access network equipment may be represented by base stations.
- the apparatus for implementing the function of the network device may be the network device, or may be an apparatus capable of supporting the network device to implement the function, such as a chip system, and the apparatus may be installed in the network device.
- the technical solutions provided by the embodiments of the present application are described by taking the device for realizing the function of the network device being a network device as an example.
- V2X communication is aimed at high-speed equipment represented by vehicles, and is the basic technology and key technology for future applications in scenarios with very high communication delay requirements.
- the application areas of V2X communication include smart cars, autonomous driving, and intelligent transportation systems.
- typical V2X communication scenarios include vehicle-to-vehicle communication (V2V), vehicle-to-pedestrian (V2P) communication, vehicle-to-infrastructure communication (vehicle to infrastructure, V2I) or vehicle to network (V2N).
- V2V vehicle-to-vehicle communication
- V2P vehicle-to-pedestrian
- V2I vehicle-to-infrastructure communication
- V2N vehicle to network
- the first terminal device and/or the second terminal device may be a vehicle or an in-vehicle terminal device located in the vehicle, or the like.
- one of the first terminal device and the second terminal device may be a vehicle or a vehicle-mounted terminal device in a vehicle, and the other may be a mobile terminal, wearable device, or other terminal device carried by pedestrians.
- one of the first terminal device and the second terminal device may be a vehicle or an in-vehicle terminal device located in the vehicle, and the other may be an infrastructure such as an RSU.
- one of the first terminal device and the second terminal device may be a vehicle or an in-vehicle terminal device located in the vehicle, and the other may be a base station.
- the first terminal device can use its own position, speed and other status information, or driving intention information such as turning, merging or reversing, or information triggered by periodic or aperiodic events, as side-travel data. surrounding terminal devices. Likewise, the first terminal device may also receive sideline data from other surrounding terminal devices. In addition, the first terminal device may also forward the received sideline data of other terminal devices. Exemplarily, the sideline data and/or the sideline feedback information are carried on the PSSCH.
- the sideline feedback information may include hybrid automatic repeat request (HARQ) feedback information, such as acknowledgement (acknowledgment, ACK) or negative acknowledgement (negative acknowledgement, NACK), and may also include channel state information (channel state information) , CSI) feedback information.
- HARQ hybrid automatic repeat request
- ACK acknowledgement
- NACK negative acknowledgement
- channel state information channel state information
- CSI channel state information
- V2X communication can support communication scenarios with and without network coverage.
- the resource allocation mode when the first terminal device transmits through V2X communication may adopt a network equipment scheduling mode.
- the resource used by the terminal device for sidelink communication, which is scheduled and sent by the network device may be referred to as a licensed resource or a licensed frequency band.
- the first terminal device can perform the self-selection of resources, that is, Resources for sidelink communication are selected from the resource pool, which may be referred to as unlicensed resources or unlicensed frequency bands. It should be understood that the resources in this application refer to time-frequency resources.
- the terminal device can receive the system information block (SIB) of the network device, the cell-specific radio resource control (RRC) signaling or the user-level signaling of the terminal device.
- SIB system information block
- RRC radio resource control
- UE-specific RRC signaling obtains SL resource pool (resource pool) configuration information and/or SL bandwidth part (bandwidth part, BWP) configuration information.
- the end device may also use preconfigured SL resource pool configuration information or SL BWP configuration information, for example, when there is no 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 sidelink communication between UEs.
- the resource pool may include code domain resources.
- the resources of the resource pool are used to include the resources for the terminal device to send and receive at least one of the following physical channels, such as PSCCH, PSSCH, PSDCH, PSFCH, PSBCH, etc.
- the types of services carried by PSSCH may include unicast, multicast and/or broadcast Communication type.
- the time domain of the SL resource pool it includes one or more time units, and the time unit can be one or several symbols, one or several time slots (slot), one or several mini-slots (mini-slot), One or several subframes, or, one or several frames, etc.
- One or more time units can be continuous in time or discrete. It should be understood that the time domain units are logically consecutive within a resource pool.
- time slot 1 to time slot 8 are time slots that are continuous in time, and such time slots are called physical time slots (physical 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 one resource pool. Since the time slots contained in the resource pool may be discontinuous in time, from the perspective of the resource pool, time slot 1, time slot 3, time slot 5 and time slot 8 on the physical time slot correspond to resources. Slot 1', Slot 2', Slot 3' and Slot 4' in the pool, then.
- the consecutive time slots (ie, time slot 1', time slot 2', time slot 3' and time slot 4') included in the resource pool are logically consecutive time slots in the resource pool, which are called logically continuous time slots.
- the frequency domain of the SL resource pool includes one or more frequency domain units, and the frequency domain unit may be a resource element (resource element, RE), several REs, a resource block (resource block, RB), several RBs , a sub-channel, several sub-channels.
- the size of the subchannel indicates that a subchannel includes one or more continuous or interlaced RBs in the frequency domain, and may be an integer such as 10, 12, 15, 20, 25, or 50.
- Interleaved RBs are one form of discrete RBs. For example, multiple RBs included in a subchannel are interleaved, which means that there is at least one RB that does not belong to the subchannel between any two adjacent RBs included in the subchannel.
- the SL resource pool configuration information may also include PSCCH configuration information, where the PSCCH configuration information includes the number of symbols occupied by the PSCCH in one time slot and the number of RBs occupied by the PSCCH in one subchannel.
- the SL BWP configuration information may include 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 SL bandwidth information for indicating the size of the bandwidth for SL communication, for example, indicating that the SL bandwidth is 20 megahertz (MHz).
- the SL BWP configuration information may also include SL symbol information, which is used to indicate the starting SL symbol position on a time slot and the number of occupied consecutive SL symbols.
- the SL BWP configuration information may also include subcarrier spacing and cyclic prefix information of the SL, 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 SL resource pool configuration information.
- the time slot is used for description, but it is not limited to the time unit only.
- the unit is sub-channel only.
- the transmitting end terminal device accesses the signal in a competitive manner, for example, in accordance with the channel access method defined by the European Telecommunications Standards Institute (ETSI).
- ETSI European Telecommunications Standards Institute
- the competing access methods mainly include load-based equipment (LBE) and frame-based equipment (FBE).
- LBE and FBE require terminal devices to perform listen before talk (LBT).
- energy-based detection may be employed when accessing unlicensed bands.
- Energy-based detection needs to set a detection threshold (energy detection threshold). When the channel energy detected by the terminal device exceeds the detection threshold, it is determined that the channel is busy, and the channel is not allowed to access. When the detected channel energy is lower than the detection threshold, if it lasts for more than a period of time, such as 34 microseconds ( ⁇ s), backoff is allowed to start.
- the size of the backoff window is related to the service priority. The higher the priority, the smaller the backoff window.
- the terminal device randomly selects a backoff value K in the backoff window to back off.
- the K value is reduced by 1, until the back-off value K is reduced to 0, then the access channel is allowed to communicate. time.
- the backoff value K if the energy detected by the terminal device is higher than the detection threshold, the channel is busy and the backoff is stopped. Until the energy detected for 34 ⁇ s again is lower than the detection threshold, the backoff is resumed, that is, the backoff is resumed according to the backoff value when the backoff was stopped last time.
- a sidelink communication resource refers to a time-frequency resource in a resource pool for sidelink communication, on which a transmitting terminal device can transmit sidelink information.
- One or more of reference signals such as PSCCH, PSSCH, physical sidelink feedback channel (PSFCH) and demodulation reference signal (DMRS) can be carried on one resource.
- the time-domain scheduling unit of the sideline resource can be a time slot or a mini-slot, and the frequency-domain scheduling unit can be a sub channel, or a continuous or interlaced one. or multiple RBs.
- PSCCH may exist in each subchannel in each time slot, that is, the time domain start position of one PSCCH is the second symbol used for sidelink communication in each time slot. start time.
- a symbol may be an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol (symbol).
- the number of consecutive symbols occupied by the PSCCH may be determined by the resource pool configuration information, such as 1, 2, or 3 symbols and other symbols that do not exceed 14 symbols.
- the starting position of the PSCCH in the frequency domain is the physical resource block (PRB) with the smallest index in each subchannel.
- PRB physical resource block
- the number of RBs occupied by the PSCCH can be determined by the SL resource pool configuration information. The number of RBs in size.
- the first terminal device and the second terminal device communicating through the SL may be different, so for a second terminal device, it is not at the same time
- the first terminal device of the SL communication received in the time slot may be different, or in other words, the first terminal device of the SL communication received in different time slots may be located in different geographical locations, so there is a near-far effect, causing the second terminal device to be in different time slots.
- the received signal strength of a slot may vary over a wide dynamic range and is unpredictable. If the received signal strength of the sidelink is not within a suitable strength range of the second terminal device, the second terminal device may not be able to accurately decode the sidelink information.
- the sidelink information includes at least one type of information, such as sidelink discovery information, sidelink control information, sidelink data information, sidelink feedback information, sidelink synchronization information, or sidelink pilot information.
- AGC is introduced into the sidelink communication, or AGC adjustment, that is, the second terminal device adjusts the received signal strength in the receiving chain to A specific desired power for optimal performance, thus satisfying the signal-to-noise ratio (SNR) required for correct decoding.
- SNR signal-to-noise ratio
- the AGC algorithm will increase the gain level of the receiver of the second terminal device, so that the SNR of the received signal reaches an acceptable range. If the received signal strength is strong, the AGC algorithm attenuates the receive gain stage to avoid the degradation of SNR caused by signal clipping and nonlinear degradation.
- the first terminal device copies all the information of the second symbol used for sidelink communication in one time slot to the On the first symbol of the sidelink communication, for the convenience of description, the information copied to the first symbol is called AGC information.
- AGC information the information copied to the first symbol.
- the first terminal device has the same transmit power on symbols in one time slot, and the second terminal device only needs to use one time slot for sidelink communication Doing the AGC once for the first symbol ensures that the AGC result is consistent for the entire time slot. That is to say, according to the AGC result of this time, it can be ensured that the received signal strength is within the acceptable range in this time slot.
- the second terminal device performs AGC processing on the AGC information on the first symbol used for sidelink communication, obtains an AGC result, and then uses the remaining time slot for the sidelink according to the AGC result.
- the sidelink information includes the SCI and the sideline data. Therefore, the reception and adjustment of the AGC information is necessary to correctly receive the SCI and the sideline data.
- the control information used for scheduling sideline data is represented by SCI in this application, and the present application does not limit the control information used for scheduling sideline data to have other names.
- the first terminal device needs to perform LBT to access the channel for communication (eg, access the channel of the unlicensed spectrum) ), then in this time slot, the first terminal device must complete the LBT at the start of the first symbol in the time slot and then access the channel, so that the AGC information can be sent in the first symbol, so that the second terminal is in the AGC adjustment is performed on the time slot, and then the sidelink information sent by the first terminal is received. Therefore, if the first terminal device cannot transmit AGC information on the first symbol used for sidelink communication in the time slot, the second terminal cannot perform AGC on the first symbol of sidelink communication. If the adjustment is made, the sidelink information sent by the first terminal cannot be correctly received in this time slot. The first terminal can only wait for the AGC information to be sent on the first symbol of the next time slot, thus increasing the sidelink communication delay.
- the embodiment of the present application provides a communication method, which is used to reduce the delay of sidelink communication.
- the communication method may be performed by the first terminal device and/or the second terminal device.
- the first terminal device may be used to transmit to the second terminal device through the sidelink.
- the following describes possible structures of the first terminal device and/or the second terminal device provided by the embodiments of the present application with reference to FIG. 5 and FIG. 6 .
- FIG. 5 shows a schematic structural diagram of a possible first terminal device and/or a second terminal device, and the structure may include a processing module 510 and a transceiver module 520 .
- the structure shown in FIG. 5 may be a terminal device, or may be a chip applied in the terminal device or other combined devices, components or assemblies having the functions of the terminal device shown in this application.
- the transceiver module 520 may be a transceiver, and the transceiver may include an antenna and a radio frequency circuit, etc.
- the processing module 510 may be a processor, such as a baseband processor, and the baseband processor may include one or more central Processing unit (central processing unit, CPU).
- CPU central processing unit
- the transceiver module 520 may be a radio frequency unit, and the processing module 510 may be a processor, such as a baseband processor.
- the transceiver module 520 may be an input/output interface of a chip, such as a baseband chip, and the processing module 510 may be a processor of the chip system, which may include one or more central processing units.
- the processing module 510 in this embodiment of the present application may be implemented by a processor or a circuit component related to the processor, and the transceiver module 520 may be implemented by a transceiver or a circuit component related to the transceiver.
- the processing module 510 may be configured to perform all operations performed by the first terminal device and/or the second terminal device in any embodiment of the present application except for the transceiving operations, such as processing operations, and/or for supporting Other processes of the techniques described herein, such as generating messages, information and/or signaling sent by transceiving module 520 and processing messages, information and/or signaling received by transceiving module 520 .
- the transceiver module 520 may be configured to perform all receiving and sending operations performed by the first terminal device and/or the second terminal device in any of the embodiments of the present application, and/or other processes used to support the techniques described herein, For example the transmission and/or reception of data.
- the transceiver module 520 can be a functional module that can perform both sending and receiving operations.
- the transceiver module 520 can be used to perform all sending operations and/or all sending operations performed by the relay node and/or the remote node.
- the transceiver module 520 can be considered as a sending module, and when performing a receiving operation, the transceiver module 520 can be considered as a receiving module;
- the module 520 can be regarded as a general term for these two functional modules, and the two functional modules are respectively a sending module and a receiving module, and the sending module is used to complete the sending operation, for example, the sending module can be used to perform the execution by the first terminal device and/or the first terminal device.
- the receiving module is used to complete the receiving operation, and the receiving module can be used to perform all the receiving operations performed by the first terminal device and/or the second terminal device.
- FIG. 6 shows a schematic structural diagram of another terminal device, which is used to perform the actions performed by the first terminal device and/or the second terminal device provided by the embodiments of the present application.
- the terminal device may include a processor, a memory, a radio frequency circuit, an antenna and/or an input/output device.
- the processor is mainly used to process communication protocols and communication data, control terminal devices, execute software programs, process data of software programs, and the like.
- the memory is mainly used to store software programs and data.
- the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
- Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
- Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.
- the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
- the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves.
- the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
- only one memory and processor are shown in FIG. 6 . In an actual end device product, there may be one or more processors and one or more memories.
- the memory may also be referred to as a storage medium or a storage device or the like.
- the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
- the antenna and the radio frequency circuit with a transceiving function may be regarded as the transceiving unit of the terminal device.
- the transceiver unit may be a functional unit capable of implementing a sending function and a receiving function; or, the transceiver unit may also include two functional units, a receiving unit capable of implementing a receiving function and a transmitting unit capable of implementing a transmitting function.
- the processor with processing function can be regarded as the processing unit of the terminal device. As shown in FIG. 6 , the terminal device includes a transceiver unit 610 and a processing unit 620 .
- the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, or the like.
- the processing unit may also be referred to as a processor, a processing single board, a processing module, a processing device, and the like.
- the device for implementing the receiving function in the transceiver unit 610 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 610 may be regarded as a transmitting unit, that is, the transceiver unit 610 includes a receiving unit and a transmitting unit.
- the transceiver unit may also sometimes be referred to as a transceiver, a transceiver, or a transceiver circuit.
- the receiving unit may also sometimes be referred to as a receiver, receiver, or receiving circuit, or the like.
- the transmitting unit may also sometimes be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like.
- the transceiver unit 610 may correspond to the transceiver module 520 , or the transceiver module 520 may be implemented by the transceiver unit 610 .
- the transceiver unit 610 is configured to perform the sending and/or receiving operations of the first terminal device and/or the second terminal device in the embodiments shown in this application, and/or to support other processes of the technology described herein.
- the processing unit 620 may correspond to the processing module 510 , or in other words, the processing module 510 may be implemented by the processing unit 620 .
- the processing unit 620 is configured to perform other operations other than the sending and receiving operations of the first terminal device and/or the second terminal device in the embodiment shown in the present application, for example, is configured to perform the operations performed by the first terminal device and/or the second terminal device in the embodiment shown in the present application. Or all operations performed by the second terminal device except receiving and transmitting, and/or other processes used to support the techniques described herein.
- the structures shown in FIG. 5 and/or FIG. 6 may also be used to implement a network device or components of a network device, such as a base station, a CU, or a DU.
- the processing module 510 shown in FIG. 5 and/or the processing unit 620 shown in FIG. 6 may be used to implement the processing steps performed by the base station in the communication method provided by the embodiments of the present application and/or other than the reception and transmission performed by the base station operation.
- the transceiver module 520 shown in FIG. 5 and/or the transceiver unit 610 shown in FIG. 6 may be used to implement the receiving operation and/or the sending operation performed by the base station in the communication method provided by the embodiment of the present application.
- the structure shown in FIG. 6 is used to implement a network device, the structure may not include an input and output device.
- the network device or a component of the network device may be referred to as a third communication device.
- the first terminal device and/or the second terminal device acquire the first configuration information.
- the first configuration information may be used by the first terminal device and/or the second terminal device to determine at least two candidate locations for AGC information and at least two candidate locations for PSCCH in one time slot. Therefore, even if the time when the first terminal device accesses the channel is located after a certain candidate position of AGC information in a time slot, the first terminal device can still be in the time slot according to the candidate position of the AGC information after the channel access time The AGC information is sent without waiting for the arrival of the next time slot, so the sidelink communication delay can be reduced.
- the first terminal device and/or the second terminal device is implemented by the structures shown in FIG. 5 and/or FIG. 6
- the first terminal device and/or the second terminal may be implemented by the structures shown in FIG. 5 and/or FIG. 6
- the first terminal device and/or the second terminal The receiving and sending actions performed by the device may be performed by the transceiver module 520 shown in FIG. 5 and/or the transceiver unit 610 shown in FIG. 6 ; in the communication method provided by the embodiment of the present application, the first terminal device and/or the second terminal
- the processing actions performed by the apparatus, and other actions except the receiving and sending actions may be performed by the processing module 510 shown in FIG. 5 and/or the processing unit 620 shown in FIG. 6 .
- the receiving and sending actions performed by the network device in the communication method provided by the embodiment of the present application can be performed by the transceiver module shown in FIG. 5 . 520 and/or the transceiver unit 610 shown in FIG. 6 ; the processing actions performed by the network device in the communication method provided by the embodiment of the present application, and other actions except the receiving and sending actions can be performed by the processing module 510 shown in FIG. 5 . and/or executed by the processing unit 620 shown in FIG. 6 .
- the communication method provided by the embodiment of the present application may include the following steps:
- S101 The first terminal device and/or the second terminal device respectively acquire first configuration information.
- the obtaining in this application includes obtaining by means of receiving, and may also include obtaining by means of reading from memory.
- the present application does not specifically limit the timings for the first terminal device and the second terminal device to obtain the first configuration information respectively. It is only required that the first terminal device and the second terminal device obtain the first configuration information before the sidelink communication. Can.
- the first terminal device and/or the second terminal device may receive the first configuration information from the network device.
- the network device may send the first configuration through a system information block (SIB), cell-specific (cell-specific) radio resource control (RRC) signaling, or user-level (UE-specific) RRC signaling information.
- SIB system information block
- RRC radio resource control
- UE-specific user-level
- the second terminal device may also acquire the first configuration information from the first terminal device.
- the first terminal device configures or instructs the obtained first configuration information to the PC5 air interface RRC signaling, SL media access control layer control element (media access control control element, MAC CE) and at least one bearer mode such as SCI. second terminal device.
- SL media access control layer control element media access control control element, MAC CE
- the first terminal device may also acquire the first configuration information from the second terminal device.
- the second terminal device configures or instructs the acquired first configuration information to the first terminal device through at least one bearer mode such as PC5 air interface RRC signaling, SL MAC CE, and SCI.
- the first configuration information may include SL BWP configuration information and/or SL resource pool configuration information.
- the first terminal device and/or the second terminal device may receive the first configuration information from the same network device or from different network devices.
- the acquisition in S101 includes receiving and reading.
- the reading is obtained, for example, from local storage.
- the first configuration information may be stored in the first terminal device and/or the second terminal device, then in S101, the first terminal device and/or the second terminal device read Local storage to obtain the first configuration information.
- the first configuration information may be preconfigured in the first terminal device and/or the second terminal device.
- the first terminal device and/or the second terminal device determine at least two consecutive candidate resources in the first time slot according to the first configuration information.
- the two consecutive candidate resources refer to that the number of the last symbol of the former candidate resource and the number of the first symbol of the latter candidate resource are consecutive in the time domain.
- the first time slot includes symbols and/or gap symbols for sideline communication.
- the symbols used for sidelink communication refer to symbols in the first time slot that can be used to transmit sidelink information.
- the interval symbol is used by the terminal equipment to process transceiving and/or considering transmission delay, and is not used to transmit sidelink information.
- the position and number of symbols used for sideline communication may be determined by a first configuration indication or an end-user indication or pre-configuration.
- the candidate resources may include consecutive symbols in the first time slot for sidelink communication.
- the plurality of symbols includes at least one first symbol and at least one second symbol.
- the first symbol may be used to transmit the first information, or in other words, the first symbol is a candidate resource of the first information.
- the second symbol can be used to transmit the SCI, or the second symbol is a candidate resource for the SCI, or the second symbol can be occupied by the PSCCH.
- the number of second symbols included in the candidate resource is the number of consecutive symbols occupied by the PSCCH.
- the first symbol may be used to transmit the first information
- the second symbol may be used to transmit the SCI.
- the first symbol is located before the second symbol, or in other words, all the first symbols in the candidate resource are located before the first second symbol of the candidate resource.
- the first information is AGC information, that is, information for the second terminal device to perform AGC.
- the first information may be the replica information of the SCI or the replica information of a subset of the SCI, where the SCI refers to the SCI carried in the second symbol.
- the copy information of a subset of SCI refers to copying a part of the information of the SCI.
- the number of symbols occupied by the PSCCH carrying the SCI is greater than one symbol, only the SCI on a part of the symbols is copied as the first information.
- the copy information of the SCI subset is the information of the first symbol on the PSCCH carrying the SCI.
- the first information may also be replica information of the information on any symbol on the first time slot.
- the first information may also be a sequence for AGC adjustment.
- the first configuration information may indicate the starting position of the symbol used for sideline communication in the first time slot, using Represents the index of the first symbol in the first slot for sidelink communication.
- the first configuration information may also indicate the number of symbols used for sideline communication in the first time slot, using express.
- the first configuration information may also indicate the number of consecutive symbols occupied by the PSCCH in the first time slot, and the number is also the number of second symbols in the candidate resource. express.
- the first configuration information may also indicate the minimum number of symbols used for sidelink communication on a time slot, using means, that is, the number of symbols included in a time slot for sideline communication is not less than in addition, It can also be a value determined by the first terminal device and/or the second terminal device, a value preconfigured in the first terminal device and/or the second terminal device, or a value predefined in a standard, such as predefined
- the index of the symbol used for sideline communication in the first time slot The value of is one of the set ⁇ 0,1,2,...,l-1 ⁇ , where, Minimum number of symbols used for sidelink communication in a slot The value of is one of the sets ⁇ 1, 2, 3,..., 14 ⁇ ; when the number of symbols in a time slot is 14, the number of symbols used for sideline communication The value of the set is one of the.
- the index of the starting position of the symbol used for sideline communication in the first time slot is used.
- Minimum number of symbols used for sidelink communication in a slot Number of symbols used for sideline communication The description is given by way of example, but is not limited to this example.
- the first configuration information also includes Indicates the number of candidate resources in the first slot. or, It may also be a value determined by the first terminal device and/or the second terminal device, a value preconfigured in the first terminal device and/or the second terminal device, or a standard predefined value.
- the number of candidate resources in the first time slot Indicates satisfaction:
- the number of candidate resources in the first slot It can be indicated by the first configuration information, and its value is a set one of; or, the number of candidate resources in the first slot Can be a value predefined by the standard, such as 2 or 3.
- the number of candidate resources in the first slot satisfies:
- the maximum value of not more than The first configuration information may indicate value of .
- k represents the minimum number of symbols required to transmit AGC information, PSCCH and PSSCH in one time slot, and refers to the minimum number of symbols that can be used to transmit AGC information, PSCCH and PSSCH in a time slot, and can be used for transmission
- the symbols of AGC information, PSCCH and PSSCH do not include space symbols.
- the first configuration information may further indicate the number of first symbols and/or the number of second symbols in the candidate resource.
- the number of first symbols and/or the number of second symbols in the candidate resource may be a value determined by the first terminal device and/or the second terminal device, pre-configured in the first terminal device and/or the second terminal device. The value in the end device or a standard predefined value. For example, as shown in FIG. 8 , the number of first symbols in the standard predefined candidate resource is 1, and the first configuration information indicates that the number of second symbols is 2.
- the first terminal device and/or the second terminal device may determine candidate resources according to the first configuration information, and perform sidelink communication according to the candidate resources.
- the first symbol in any candidate resource can be used for sending the first information, so even if the channel access time of the first terminal device is located after the start time of the first symbol in a candidate resource of the first time slot, the A terminal device can also send the first information according to the first symbols of other candidate resources after the channel access time without waiting for the next time slot of the first time slot, thereby reducing the sidelink communication delay.
- the embodiment of the present application further provides a communication method, wherein the first terminal device sends the first information in the first symbol of the first candidate resource after the channel access time in the first time slot, and sends the first information in the first candidate resource in the first time slot.
- the second symbol of SCI sends SCI for scheduling sideline data.
- the second terminal device may decode the SCI according to the first information in the first candidate resource, and perform sidelink data decoding according to the SCI, so as to implement sidelink communication.
- the method shown in FIG. 9 may be performed independently of the process shown in FIG. 7 or after the process shown in FIG. 7 . In other words, the execution of the process shown in FIG. 9 does not necessarily depend on the configuration process of the first configuration information shown in FIG. 7 .
- the communication method includes the following steps:
- the first terminal device sends the first information in the first symbol of the first candidate resource, and sends the SCI in the second symbol of the first candidate resource.
- the first candidate resource is the first candidate resource among the candidate resources after the first time.
- the first time is the channel access time of the first terminal device. It should be understood that the first candidate resource is located in the first time slot.
- the first terminal device may determine the position of the first symbol and/or the second symbol according to the first configuration information from the network device. Alternatively, the first symbol and/or the second symbol may be preconfigured at the first terminal device or standard-defined. In the process shown in FIG. 9 , reference may be made to the description in FIG. 7 for candidate resources, and the description will not be repeated here.
- the first candidate resource may be the first candidate resource whose start time is after the first time.
- the first time may be the time when the back-off value K is reduced to 0 when the first terminal device performs LBT.
- the first time is the time when the first terminal device wakes up from the power saving state and performs SL communication.
- the first moment may be the moment when the first terminal device accesses the network to send the SL information.
- the first terminal device may send the third information on the first resource following the second symbol of the first candidate resource.
- the third information may include sideline data and/or sideline feedback information, or the third information is carried on the PSSCH, or the first resource in this application may be used to transmit the PSSCH.
- the first resource may include the first symbol and/or the second symbol following the second symbol.
- the PSCCH resource and the PSSCH resource allocated to the first terminal device can be frequency-division multiplexed
- the first resource includes the second symbol and the first symbol and/or the second symbol following the second symbol.
- the PSCCH resource includes the second symbol of the first candidate resource
- the second symbol of the first candidate resource can be multiplexed into the PSSCH resource, that is, the second symbol of the first candidate resource and the first candidate resource.
- the first symbol and/or the second symbol after the second symbol in can be used to transmit the PSSCH.
- the first resource may include the first symbol and/or the second symbol in the candidate resources located after the first candidate resource.
- the first resource includes part or all of the symbols in the first time slot that are located after the second symbol of the first candidate resource and may be used for sidelink communication, wherein the part or all of the symbols may include at least one candidate resource The first and second symbols of .
- the first terminal device may send the first information in this symbol #6.
- Symbol #7 and symbol 8 are the second symbols in candidate resource #3, then the SCI can be sent at symbol #7 and symbol 8. If the SCI is sent on symbols #7 and #8, and the resources of PSCCH and PSSCH allocated to the first terminal device can be frequency-division multiplexed, the first terminal device may also send sidelines on symbols #7 and #8 data.
- the first terminal device may transmit the third information in symbols #7 to #12, that is, at this time, the first resource includes symbols #7 to symbol #12.
- the first terminal device may send the second information before the first candidate resource, so as to prevent the channel already accessed from being occupied by other terminal devices.
- the start time of the resource refers to the start time of the first symbol of the resource.
- the first terminal device may determine whether to send the second information according to the position within the first time slot at the first moment. Specifically, when the first moment is not the start moment of any candidate resource in the first time slot, the second information is sent between the first moment and the start moment of the next candidate resource.
- the second information may be the copy information of the first information, the copy information of the subset of the first information, the copy information of the SCI, the copy information of the subset of the SCI, other information or a demodulation reference signal (DMRS) ) and other reference signals, at least one of the extended cyclic prefix (extended cyclic prefix, ECP) of the first information, the ECP of the SCI, and other information such as set information.
- DMRS demodulation reference signal
- the first terminal device may send the second information between the first moment and the start moment of symbol #3. Specifically, the first terminal device may send the second information on the time domain resource located after the first moment in the symbol #1 and the symbol #2. Thereafter, the first terminal device may transmit the first information on symbol #3, and then transmit the SCI on symbol #4 and symbol #5, where symbols #4 and #5 are the second symbols of candidate resource #2, in this example Medium is the resource of PSCCH.
- the first resource includes symbols #6 to #12, that is, symbols #6 to #12 can be used to send third information.
- the PSCCH resources and PSSCH resources allocated to the first terminal device can be frequency-division multiplexed, that is, the symbol #4 and the symbol #5 can be multiplexed for transmitting the third information
- the first terminal device can use the symbol #4 to transmit the third information.
- the third information is sent from 4 to symbol #12, when the first resource includes symbols #4 to #12.
- the first terminal device can only perform the first information, the SCI and the third information in the next time slot. of sending.
- the first terminal device may send the second information on a symbol for sidelink communication that is located after the first moment in the first time slot.
- the first terminal device may also transmit the first information on the first symbol of the first candidate resource in the next time slot and the SCI on the second symbol of the candidate resource.
- S202 The second terminal device blindly decodes the SCI on the second symbol.
- the second terminal device decodes the information carried on the second symbol in the first candidate resource according to the information carried on the first symbol in the first candidate resource to obtain the SCI. That is to say, the second time in this application refers to the time when the second terminal device obtains the SCI of the second symbol carried in the first candidate resource. After the second time instant, the second terminal device may decode the information carried on the resource following the second symbol according to the SCI.
- the first candidate resource is, for the second terminal device, one of the candidate resources in the first time slot.
- the second terminal device may determine the position of the first symbol and/or the second symbol of the candidate resource in the first time slot according to the first configuration information from the network device.
- the first symbol and/or the second symbol of the candidate resource in the first time slot may be preconfigured at the second terminal device or defined by a standard.
- the first terminal device uses the method shown in FIG. 9 to send the first information on the first symbol in the first candidate resource after the channel access time among the plurality of first symbols in the first time slot, and sends the first information on the channel
- the SCI is sent on the second symbol of the first candidate resource after the access time to perform sidelink communication. Therefore, there is no need to wait for the next time slot to perform sidelink communication, which can reduce the time required for sidelink communication. extension.
- the following is an example of the manner in which the second terminal device blindly detects the SCI and obtains the SCI at the second moment. It should be understood that the method for implementing the blind detection of SCI of the present application is not limited thereto.
- the blind detection of SCI for any candidate resource includes: performing AGC according to the information carried by the first symbol in the candidate resource, obtaining the AGC result corresponding to the information, and performing the AGC result on the information carried by the second symbol in the same candidate resource of the candidate resource according to the AGC result. Decoding, if the decoding is successful, the SCI carried in the second symbol is obtained.
- the second terminal device can determine The candidate resource is the first candidate resource, the information carried by the first symbol is the first information, that is, the AGC information, and the information carried by the second symbol is the SCI. If the decoding fails, it means that the candidate resource is not the first candidate resource, the information carried by the first symbol is not the first information, and the information carried by the second symbol is not the SCI. In other words, the second terminal device can determine that the candidate resource is not the first candidate resource.
- the information carried by the first symbol is not the first information
- the information carried by the second symbol is not the SCI
- the second terminal device may continue to perform AGC adjustment and blind detection of the SCI on the next candidate resource in the first time slot.
- the second terminal device may also perform the above actions on the candidate resource traversal in the first time slot according to the set interval and/or the set order.
- the second terminal device before obtaining the SCI according to the first information, performs AGC on the information carried by the first symbol in each or at least two candidate resources received in the first time slot, and obtains the AGC result , AGC results can be used for SCI and/or sideline data reception.
- the information of the first symbol of the i-th candidate resource carried in the first time slot is referred to as information
- the information of the second symbol of the i-th candidate resource carried in the first time slot is referred to as information.
- the second terminal device may perform AGC according to the information carried by the first symbol in the candidate resource during the blind detection of SCI on any candidate resource, obtain an AGC result, and perform blind detection of SCI according to the AGC result, and also It is to determine whether the SCI can be correctly decoded in the candidate resource according to the AGC result.
- the second terminal device may perform blind detection of the SCI on the candidate resource #1. For example, the second terminal device receives the first symbol of the candidate resource #1, that is, symbol #0. information, according to Information to perform AGC, obtain The AGC result corresponding to the information, according to The AGC result corresponding to the information is received in the second symbol of candidate resource #1, namely symbol #1 and symbol #2 information, and then according to Information-blind detection of SCI.
- the second terminal device may also perform blind detection of the SCI on the candidate resource #2, for example, the second terminal device may receive the first symbol of the candidate resource #2, that is, symbol #3 information, according to Information to perform AGC, obtain The AGC result corresponding to the information, according to The AGC result corresponding to the information is received in the second symbol of candidate resource #2, namely symbol #4 and symbol #5 information, and then according to Information-blind detection of SCI.
- the second terminal device may also perform blind detection of the SCI on the candidate resource #3, for example, the second terminal device may receive the first symbol of the candidate resource #3, that is, symbol #6 information, according to Information to perform AGC, obtain The AGC result corresponding to the information, according to The AGC result corresponding to the information is received in the second symbol of candidate resource #3, namely symbol #7 and symbol #8 information, and then according to Information-blind detection of SCI.
- the second terminal device has Decoding of the AGC result corresponding to the information information obtained SCI, you can stop based on Decoding of the AGC result corresponding to the information information.
- the second terminal device has Decoding of the AGC result corresponding to the information Information obtained from SCI, or based on Decoding of the AGC result corresponding to the information information obtained SCI, you can stop based on Decoding of the AGC result corresponding to the information information.
- the first terminal device sends the first information in the first symbol of the candidate resource #3, that is, symbol #6, and sends the SCI in the second symbol of the candidate resource #3, that is, symbol #7 and symbol #8, because the second terminal There is a delay in the decoding of the device, and the second moment when the second terminal device obtains the SCI may be located after the candidate resource #3. After obtaining the SCI according to the blind detection of the candidate resource #3 at the second moment, the second terminal device may determine that the candidate resource #3 is the first candidate resource.
- the second terminal device may decode the side row data in the first time slot according to the AGC result capable of correctly decoding the SCI and the correctly received SCI.
- the second terminal device since the second terminal device needs to The AGC result corresponding to the information receives the second symbol carried in the i-th candidate resource.
- information which is used to blindly detect SCI, so the second terminal device is identified based on whether the SCI can be correctly decoded Whether the information is SCI and identification Whether the information is the first information.
- the decoding of the information requires a certain decoding delay. If the second terminal device recognizes the first symbol carried in the p-th candidate resource The information is the first information and the first information identifying the second symbol carried on the p-th candidate resource.
- the information is SCI, which means that the p-th candidate resource is the first candidate resource, and the candidate resources after the p-th candidate resource may transmit third information, such as sideline data and/or sideline feedback information, where , is the number of candidate resources in the first time slot.
- the second terminal device cannot delete any information carried on the resources after the p-th candidate resource, otherwise, packet loss in sideline transmission will result, and transmission reliability will be reduced.
- the second terminal device may store the information carried on the first symbol and the second symbol in all candidate resources except the first candidate resource received before the second moment for use in For data decoding, and/or, the second terminal device may store the data of the first symbol carried on the jth candidate resource received before the second time instant.
- the information carried on the first symbol and the second symbol in all candidate resources except the first candidate resource may be referred to as fourth information, and/or the second terminal device at the second moment previously received information and The information is called fourth information.
- the fourth information includes the information carried on the first symbol and the second symbol in all the candidate resources except the first candidate resource, and/or, the information carried by the second terminal device received before the second moment is carried on the of the first symbol of the i-th candidate resource information and the second symbol carried in the ith candidate resource information.
- the second terminal device can store the information after receiving the first symbol carried in the second candidate resource Before or at the time of the message, if the SCI has not been correctly decoded by the second terminal device, the After the information, the second terminal device can store the information.
- the start symbol of the first candidate resource is the start symbol that can be used for sideline transmission in the first time slot
- the first information can only be sent on this symbol at the earliest. That is, the sideline data information will not be sent on this symbol, so for the second terminal device, it is not necessary to store the information of the start symbol that can be used for sideline transmission in the first time slot, that is, it is not necessary to store the information of the start symbol of the sideline transmission in the first time slot. at the first symbol of the first candidate resource information and the second symbol carried in the first candidate resource information.
- FIG. 12 takes FIG. 12 as an example to describe the actions performed by the second terminal device in detail.
- the first terminal device transmits the first information at the first symbol of the candidate resource #2, namely symbol #3, transmits the SCI at the second symbol of the candidate resource #2, namely symbol #4 and symbol #5, and transmits the first information at the first symbol #4 and symbol #5 of the candidate resource #2.
- Symbols #6 to #12 used for sideline communication in the time slot transmit sideline data that is, the first resource includes symbols #6 to #12. Among them, a certain time in the symbol #1 is time t1.
- the second terminal device based on the first symbol in the first time slot available for sidestream communication Information to perform AGC, obtain The AGC result corresponding to the information, wherein the first symbol available for sideline communication is symbol #0, and symbol #0 is also the first symbol in candidate resource #1. And, the second terminal device according to The AGC result corresponding to the information, for the second symbol in the candidate resource #1, that is, the symbol #1 and the symbol #2 received.
- information to decode due to the decoding delay, the second terminal device cannot receive the information is completed immediately after the The decoding of the information, that is, the second terminal device cannot complete the pairing at the end of symbol #2 or the beginning of symbol #3.
- the decoding of the information it is not known whether the SCI can be obtained.
- the second terminal device finishes decoding information can be received according to the first symbol in candidate resource #2, symbol #3 information is processed by AGC to determine the information corresponding to the AGC results, and/or store the information. After that, the second terminal device can The AGC result corresponding to the information is received on the second symbol in candidate resource #2, namely symbol #4 and symbol #5. information to decode.
- the second terminal device if at time t1, the second terminal device has not received the The AGC result corresponding to the information is correctly decoded in the second symbol received in the i-th candidate resource.
- the second terminal device The AGC result corresponding to the message is correctly decoded and received on symbol #4 and symbol #5
- the information obtains the SCI, that is, time t1+k is the second time, and after time t1+k, the second terminal device can decode the sideline data information scheduled by the SCI according to the SCI.
- t1+k >t1.
- the PSCCH resources allocated to the first terminal device and the PSSCH resources can be frequency-division multiplexed
- the second terminal device can perform frequency division multiplexing on the symbols #4 and symbols used for sidelink communication after symbol #4.
- the received sideline data information is decoded, wherein the symbols used for sidelink communication after symbol #4 and symbol #4 include the data stored by the second terminal device. information; otherwise, if the PSCCH resources allocated to the first terminal device and the PSSCH resources cannot be frequency-division multiplexed, the second terminal device may The sideline data information received on the symbol is decoded, wherein the information received on the symbols used for sidelink communication after symbol #6 and symbol #6 includes the information stored in the second terminal device. information.
- the second terminal device stops performing blind detection of AGC and SCI on the candidate resources in the first time slot to save processing overhead. For example, as shown in FIG. 12 , after time t1+k, even if the first time slot still includes candidate resources, the second terminal device will no longer be based on the first symbol of the candidate resource after time t1+k in the first time slot. AGC is performed on the information carried, and blind detection of SCI is no longer performed according to the second symbol of the candidate resource after time t1+k in the first time slot.
- the second terminal device will only send the first information in the slot x Perform AGC on the first symbol of the first candidate resource on x, and perform PSCCH decoding on the information received on the second symbol of the first candidate resource according to the AGC result.
- the PSCCH decoding of the second terminal device fails at this time, the PSCCH decoding will not be performed on the second symbols of other candidate resources of the slotx.
- AGC processing will not be performed on the first symbols of other candidate resources of the slot x.
- Embodiments of the present application provide a communication device.
- the communication apparatus may be used to implement the first terminal apparatus involved in the foregoing embodiments, and the communication apparatus may include the structure shown in FIG. 5 and/or FIG. 6 .
- the communication device may be configured to perform the steps performed by the first terminal device in the above method embodiments.
- Embodiments of the present application provide a communication device.
- the communication apparatus may be used to implement the second terminal apparatus involved in the foregoing embodiments, and the communication apparatus may include the structure shown in FIG. 5 and/or FIG. 6 .
- the communication device may be configured to perform the steps performed by the second terminal device in the above method embodiments.
- Embodiments of the present application provide a communication device.
- the communication apparatus may be used to implement the network equipment involved in the foregoing embodiments, and the communication apparatus may include the structures shown in FIG. 5 and/or FIG. 6 .
- the communication apparatus can be used to perform the steps performed by the network device in the above method embodiments.
- Embodiments of the present application provide a communication system.
- the communication system may include the first terminal device, the second terminal device, and the network equipment involved in the foregoing embodiments, for implementing the method shown in FIG. 7 .
- the communication system may include the first terminal device and the second terminal device involved in the foregoing embodiments, for implementing the method shown in FIG. 9 .
- Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a computer, the computer can implement any of the embodiments shown in the foregoing method embodiments. Processes related to the first terminal device, the second terminal device and/or the network device.
- Embodiments of the present application further provide a computer program product, where the computer program product is used to store a computer program, and when the computer program is executed by a computer, the computer can implement the same method as the first one in any of the foregoing method embodiments. Processes related to the terminal device, the second terminal device and/or the network device.
- An embodiment of the present application further provides a chip or a chip system, where the chip may include a processor, and the processor may be configured to call a program or an instruction in a memory to execute any one of the foregoing method embodiments and the first Processes related to the terminal device, the second terminal device and/or the network device.
- the chip system may include the chip and other components such as memory or transceivers.
- An embodiment of the present application further provides a circuit, which can be coupled with a memory and can be used to execute the first terminal device, the second terminal device, and/or the network device in any of the embodiments shown in the foregoing method embodiments. process.
- the chip system may include the chip and other components such as memory or transceivers.
- the size of the sequence numbers of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application. implementation constitutes any limitation.
- the term "and/or” in this application is only an association relationship to describe associated objects, which means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist at the same time. , there are three cases of B alone.
- the character "/" in this document generally indicates that the contextual object is an "or” relationship; the term “at least one” in this application can mean “one” and "two or more", for example, A At least one of , B, and C can mean: A alone exists, B exists alone, C exists alone, A and B exist simultaneously, A and C exist simultaneously, C and B exist simultaneously, and A and B and C exist simultaneously. seven situations.
- the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media including, but not limited to, disk storage, CD-ROM, optical storage, and the like, having computer-usable program code embodied therein.
- These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
- the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.
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Abstract
Description
Claims (32)
- 一种通信方法,其特征在于,包括:获取第一配置信息;根据所述第一配置信息确定第一时隙中的连续的至少两个候选资源,所述候选资源包括连续的多个符号,所述多个符号包括至少一个第一符号和至少一个第二符号,所述第一符号用于传输第一信息,所述第二符号用于传输侧行链路控制信息,所述第一符号在所述第二符号之前。
- 如权利要求1所述的方法,其特征在于,所述第一配置信息包括所述候选资源中连续的所述第二符号的个数信息。
- 如权利要求1或2所述的方法,其特征在于,应用于第一终端装置,还包括:在第一候选资源的所述第一符号发送第一信息,以及在所述第一候选资源的所述第二符号发送侧行链路控制信息,所述第一候选资源是第一时刻之后的所述候选资源中的第一个候选资源,所述第一时刻是所述第一终端装置的信道接入时刻,所述第一时刻在所述第一时隙内。
- 如权利要求3所述的方法,其特征在于,所述第一时刻在所述第一候选资源的起始时刻之前,还包括:在所述第一时刻至所述第一候选资源的起始时刻之间发送第二信息。
- 如权利要求4所述的方法,其特征在于,所述第二信息包括所述第一信息的复制信息、所述侧链路控制信息的复制信息、所述第一信息的扩展循环前缀或所述侧链路控制信息的扩展循环前缀。
- 如权利要求3-5中任一所述的方法,其特征在于,还包括:在第一资源上发送第三信息,所述第一资源包括所述第一候选资源之后的所述第一符号和/或所述第二符号,所述第三信息承载于侧行链路数据信道中。
- 如权利要求1所述的方法,其特征在于,应用于第二终端装置,还包括:在所述第二符号上盲检测侧行链路控制信息。
- 如权利要求7所述的方法,其特征在于,还包括:在第二时刻之后,停止在所述第一时隙中的所述候选资源上盲检测侧行链路控制信息,所述第二时刻为所述第二终端装置获得第一候选资源中的所述第二符号所承载的侧行链路控制信息的时刻,所述第一候选资源为所述候选资源中的一个。
- 如权利要求7所述的方法,其特征在于,所述在所述第二符号上盲检测侧行链路控制信息,包括:根据在第二时刻之前的所述候选资源中的第i个候选资源的所述第一符号上承载的信息,进行自动增益控制调整,其中,i=1、2……n,n为所述第一时隙中位于所述第二时刻之前的所述候选资源的数量,所述第二时刻为所述第二终端装置获得第一候选资源中的所述第二符号所承载的侧行链路控制信息的时刻,所述第一候选资源为所述候选资源中的一个;根据所述自动增益控制调整的结果译码所述第i个候选资源的所述第二符号上承载的信息。
- 如权利要求7-9中任一所述的方法,其特征在于,还包括:存储至少一个第四信息,所述第四信息为第二时刻之前在所述候选资源中的第j个候选资源的所述第一符号和所述第二符号上承载的信息,j=2、3……n,n为所述第一时隙中位于所述第二时刻之前的所述候选资源的数量,所述第二时刻为所述第二终端装置获得第一候选资源中的所述第二符号所承载的侧行链路控制信息的时刻,所述第一候选资源为所述候选资源中的一个。
- 如权利要求10所述的方法,其特征在于,还包括:根据所述侧行链路控制信息,译码所述第一候选资源之后的所述第四信息和最后一个所述第四信息之后的信息。
- 一种通信方法,其特征在于,包括:确定第一配置信息,所述第一配置信息用于指示第一时隙中的至少两个候选资源,所述候选资源包括连续的多个符号,所述多个符号包括至少一个第一符号和至少一个第二符号,所述第一符号用于传输第一信息,所述第二符号用于传输侧行链路控制信息,所述第一符号在所述第二符号之前;发送所述第一配置信息。
- 如权利要求12所述的方法,其特征在于,所述第一配置信息包括所述候选资源中连续的所述第二符号的个数信息。
- 一种通信装置,其特征在于,包括:收发模块,用于获取第一配置信息;处理模块,用于根据所述第一配置信息确定第一时隙中的连续的至少两个候选资源,所述候选资源包括连续的多个符号,所述多个符号包括至少一个第一符号和至少一个第二符号,所述第一符号用于传输第一信息,所述第二符号用于传输侧行链路控制信息,所述第一符号在所述第二符号之前。
- 如权利要求14所述的通信装置,其特征在于,所述第一配置信息包括所述候选资源中连续的所述第二符号的个数信息。
- 如权利要求14或15所述的通信装置,其特征在于,所述收发模块还用于:在第一候选资源的所述第一符号发送第一信息,以及在所述第一候选资源的所述第二符号发送侧行链路控制信息,所述第一候选资源是第一时刻之后的所述候选资源中的第一个候选资源,所述第一时刻是所述终端装置的信道接入时刻,所述第一时刻在所述第一时隙内。
- 如权利要求16所述的通信装置,其特征在于,所述第一时刻在所述第一候选资源的起始时刻之前,所述收发模块还用于:在所述第一时刻至所述第一候选资源的起始时刻之间发送第二信息。
- 如权利要求17所述的通信装置,其特征在于,所述第二信息包括所述第一信息的复制信息、所述侧链路控制信息的复制信息、所述第一信息的扩展循环前缀或所述侧链路控制信息的扩展循环前缀。
- 如权利要求16-18中任一所述的通信装置,其特征在于,所述收发模块还用于:在第一资源上发送第三信息,所述第一资源包括所述第一候选资源之后的所述第一符号和/或所述第二符号,所述第三信息承载于侧行链路数据信道中。
- 如权利要求14所述的通信装置,其特征在于,所述收发模块还用于:在所述第二符号上盲检测侧行链路控制信息。
- 如权利要求20所述的通信装置,其特征在于,所述收发模块还用于:在第二时刻之后,停止在所述第一时隙中的所述候选资源上盲检测侧行链路控制信息,所述第二时刻为所述第二终端装置获得第一候选资源中的所述第二符号所承载的侧行链路控制信息的时刻,所述第一候选资源为所述候选资源中的一个。
- 如权利要求20所述的通信装置,其特征在于,所述收发模块具体用于:根据在第二时刻之前的所述候选资源中的第i个候选资源的所述第一符号上承载的信息,进行自动增益控制调整,其中,i=1、2……n,n为所述第一时隙中位于所述第二时刻之前的所述候选资源的数量,所述第二时刻为所述第二终端装置获得第一候选资源中的所述第二符号所承载的侧行链路控制信息的时刻,所述第一候选资源为所述候选资源中的一个;根据所述自动增益控制调整的结果译码所述第i个候选资源的所述第二符号上承载的信息。
- 如权利要求20-22中任一所述的通信装置,其特征在于,所述处理模块还用于:存储至少一个第四信息,所述第四信息为第二时刻之前在所述候选资源中的第j个候选资源的所述第一符号和所述第二符号上承载的信息,j=2、3……n,n为所述第一时隙中位于所述第二时刻之前的所述候选资源的数量,所述第二时刻为所述第二终端装置获得第一候选资源中的所述第二符号所承载的侧行链路控制信息的时刻,所述第一候选资源为所述候选资源中的一个。
- 如权利要求23所述的通信装置,其特征在于,所述收发模块还用于:根据所述侧行链路控制信息,译码所述第一候选资源之后的所述第四信息和最后一个所述第四信息之后的信息。
- 一种通信装置,其特征在于,包括:处理模块,用于确定第一配置信息,所述第一配置信息用于指示第一时隙中的至少两个候选资源,所述候选资源包括连续的多个符号,所述多个符号包括至少一个第一符号和至少一个第二符号,所述第一符号用于传输第一信息,所述第二符号用于传输侧行链路控制信息,所述第一符号在所述第二符号之前;收发模块,用于发送所述第一配置信息。
- 如权利要求25所述的通信装置,其特征在于,所述第一配置信息包括所述候选资源中连续的第二符号的个数信息。
- 一种通信装置,其特征在于,包括:存储器,用于存储指令;处理器,用于从所述存储器中调用并运行所述指令,使得所述通信装置执行如权利要求1-11中任一项所述的方法。
- 一种通信装置,其特征在于,包括:存储器,用于存储指令;处理器,用于从所述存储器中调用并运行所述指令,使得所述通信装置执行如权利要求12或13所述的方法。
- 一种通信***,其特征在于,包括如权利要求14-24或27中任一所述的通信装置和如权利要求25-26或28中任一所述的通信装置。
- 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中存储有指令,当所述指令在计算机上被调用执行时,使得所述计算机执行如权利要求1-13中任一项所述的方法。
- 一种计算机程序产品,其特征在于,当所述计算机程序产品在计算机上运行时,使得所述计算机执行如权利要求1-13中任一项所述的方法。
- 一种电路,其特征在于,所述电路与存储器耦合,所述电路用于读取并执行所述存储器中存储的程序以执行如权利要求1-13中任一项所述的方法。
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US20200169375A1 (en) * | 2016-06-08 | 2020-05-28 | Lg Electronics Inc. | A communication method using nr for 5g |
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---|---|---|---|---|
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