CN110958095A - Communication method and device - Google Patents

Communication method and device Download PDF

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Publication number
CN110958095A
CN110958095A CN201811133292.0A CN201811133292A CN110958095A CN 110958095 A CN110958095 A CN 110958095A CN 201811133292 A CN201811133292 A CN 201811133292A CN 110958095 A CN110958095 A CN 110958095A
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resource
terminal device
data channel
channel
control
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CN201811133292.0A
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CN110958095B (en
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张兴炜
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2019/107572 priority patent/WO2020063596A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A communication method and a communication device are used for solving the problem that multiple resource multiplexing modes coexist in a scene supported by the multiple resource multiplexing modes. The method comprises the following steps: a first terminal device determines a resource multiplexing mode, wherein the resource multiplexing mode represents a resource multiplexing relation between a control channel and a data channel, the control channel is used for the first terminal device to send a control signaling to a second terminal device, and the data channel is used for the first terminal device to send data to the second terminal device; and the first terminal equipment indicates the resource multiplexing mode to the second terminal equipment through the control signaling.

Description

Communication method and device
Technical Field
The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.
Background
In device-to-device communication (D2D) or V2X (vehicle to interference) communication based on Long Term Evolution (LTE), for D2D device communication, a sending side first sends control signaling, where a time-frequency domain resource location of data is carried in the control signaling, and then sends the data on the time-frequency domain resource indicated by the control signaling. The receiving side firstly detects the control signaling in a blind way, and if the control signaling is received correctly and an Identifier (ID) included in the control signaling is matched with the ID of the receiving side, the data is received at the time-frequency domain resource position indicated by the control signaling.
In D2D communication, the resource multiplexing mode adopted is Time Division Multiplexing (TDM), and control signaling and data may occupy different subframes of the same subcarrier. When V2X communicates, the resource multiplexing mode adopted is frequency division multiplexing (TDM), and control signaling and data may occupy the same subframe of different subcarriers. In the 5G communication system, V2X may use a frequency division multiplexing mode or a time division multiplexing mode for communication, and the existing communication mode between terminal devices is not suitable for a scenario supported by multiple resource multiplexing modes. How to support coexistence of multiple resource multiplexing modes is a problem to be solved.
Disclosure of Invention
The application provides a communication method and device, which are used for solving the problem of how multiple resource multiplexing modes coexist in a scene supported by the multiple resource multiplexing modes.
In a first aspect, an embodiment of the present application provides a communication method, including: a first terminal device determines a resource multiplexing mode, wherein the resource multiplexing mode represents a resource multiplexing relation between a control channel and a data channel, the control channel is used for the first terminal device to send a control signaling to a second terminal device, and the data channel is used for the first terminal device to send data to the second terminal device; and the first terminal equipment indicates the resource multiplexing mode to the second terminal equipment through the control signaling.
According to the scheme provided by the embodiment of the application, the sending end indicates the resource multiplexing mode of the receiving end, so that the receiving end can determine the position relation between the data channel and the control channel, and further can determine the resource position of the data channel after the control channel is decoded, and further can acquire data. The method can be applied to scenes supported by various resource multiplexing modes. The sending end does not need to indicate the time-frequency resource position of the data channel in a resource pattern mode any more, and therefore signaling overhead is saved.
In one possible design, the indicating, by the first terminal device, the resource multiplexing mode to the second terminal device through the control signaling includes: the first terminal equipment sends the control signaling to the second terminal equipment through the control channel, and the control signaling carries first indication information; the first indication information is used for indicating a resource multiplexing mode.
The scheme provides a method for displaying and indicating the resource multiplexing mode of the receiving end.
In one possible design, the indicating, by the first terminal device, the resource multiplexing mode to the second terminal device through the control signaling includes: the first terminal equipment sends the control signaling to second terminal equipment through the control channel;
wherein, there is a mapping relationship between the related information of the control signaling and second indication information, the second indication information is used for indicating a resource multiplexing mode, and the related information of the control signaling includes at least one of the following items:
demodulating a cyclic offset of a demodulation reference signal (DMRS) sequence of the control channel carrying the control signaling;
an orthogonal convolutional code OCC of the DMRS sequence;
a root sequence of the DMRS sequence;
scrambling code of the control signaling;
a cyclic redundancy check, CRC, mask of the control signaling;
a Control Channel Element (CCE) index number of the control channel;
a control resource set identification of the control channel;
a search space identification of the control channel;
a symbol position of the control channel;
a number of symbols of the control channel;
a slot position of the control channel;
the number of time slots of the control channel;
an RB position of the control channel; alternatively, the first and second electrodes may be,
a number of RBs of the control channel.
According to the scheme, the resource multiplexing mode of the receiving end is indicated in an implicit mode, and compared with the display indication, the transmission resource of the control signaling does not need to be occupied, so that the signaling overhead is further saved.
In a possible design, the resource multiplexing mode is any one of time division multiplexing, frequency division multiplexing, and embedded multiplexing.
In one possible design, the control signaling carries at least one of the following information:
the number of symbols of the data channel, the number of slots of the data channel, the time domain spacing between the data channel and the control channel, the number of RBs of the data channel, or the frequency domain spacing between the data channel and the control channel.
By further indicating the exact location of the data channel on the basis of indicating the resource multiplexing mode, the signaling overhead is reduced compared with the case where the time-frequency resource location of the data channel is indicated by a time-frequency resource pattern in the control signaling.
In a possible design, if the resource multiplexing mode is time division multiplexing, the control signaling carries at least one of the number of symbols of the data channel, the number of slots of the data channel, or the time interval between the data channel and the control channel, and the number of RBs of the data channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is frequency division multiplexing, the control signaling carries the number of symbols of the data channel or the number of time slots of the data channel, and the control signaling also carries at least one of the number of RBs of the data channel and the frequency domain interval between the data channel and the control channel.
In a possible design, if the resource multiplexing mode is time division multiplexing and the frequency domain bandwidths of the control channel and the data channel are the same, the control signaling carries at least one of the number of symbols of the data channel, the number of time slots of the data channel, or the time domain interval between the data channel and the control channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is time division multiplexing and the frequency domain bandwidths of the control channel and the data channel are different, the control signaling carries the number of RBs included in the data channel, and the control signaling also carries at least one of the number of symbols of the data channel, the number of time slots of the data channel, or the time domain interval between the data channel and the control channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is frequency division multiplexing and the time domain lengths of the control channel and the data channel are the same, the control signaling carries at least one of the RB number of the data channel and the frequency domain interval of the data channel and the control channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is frequency division multiplexing and the time domain lengths of the control channel and the data channel are different, the control signaling carries the symbol number of the data channel or the time slot number of the data channel, and the control signaling also carries at least one of the number of RBs included in the data channel and the frequency domain interval between the data channel and the control channel.
By determining the data required for indicating the exact position of the data channel based on the indication resource multiplexing mode and further based on the resource multiplexing mode, the signaling overhead is reduced compared with the case that the time-frequency resource position of the data channel is indicated by the time-frequency resource pattern in the control signaling.
In one possible design, the control channel and the data channel are located in the same resource pool.
In one possible design, the same resource pool can support multiple resource reuse patterns. The same resource pool may be allocated to terminal devices of multiple senders.
Exemplarily, a first terminal device determines a first resource multiplexing manner, where the first resource multiplexing manner represents a resource multiplexing relationship between a first control channel and a first data channel, the first control channel is used for the first terminal device to send a control signaling to the terminal device 2, and the first data channel is used for the first terminal device to send data to the terminal device 2; the first terminal device indicates the first resource multiplexing mode to the terminal device 2.
The first terminal device determines a second resource multiplexing mode, where the second resource multiplexing mode represents a resource multiplexing relationship between a second control channel and a second data channel, the second control channel is used for the first terminal device to send a control signaling to the terminal device 3, and the second data channel is used for the first terminal device to send data to the terminal device 3; the first terminal equipment indicates the second resource multiplexing mode to the terminal equipment 3; the second resource multiplexing mode is different from the first resource multiplexing mode; the first control channel, the second control channel, the first data channel, and the second data channel are located in a same resource pool.
In a second aspect, an embodiment of the present application provides a communication method, including: the second terminal equipment receives a control signaling sent by the first terminal equipment from a control channel; the second terminal device determines a resource multiplexing mode according to the control signaling, the resource multiplexing mode represents a resource multiplexing relationship between the control channel and a data channel, the control channel is used for the first terminal device to send the control signaling to the second terminal device, and the data channel is used for the first terminal device to send data to the second terminal device; and the second terminal equipment detects the data sent by the first terminal equipment from the data channel according to the resource multiplexing mode.
According to the scheme provided by the embodiment of the application, the sending end indicates the resource multiplexing mode of the receiving end, so that the receiving end can determine the position relation between the data channel and the control channel, and further can determine the resource position of the data channel after the control channel is decoded, and further can acquire data. The method can be applied to scenes supported by various resource multiplexing modes. The sending end does not need to indicate the time-frequency resource position of the data channel in a resource pattern mode any more, and therefore signaling overhead is saved.
In a possible design, the controlling signaling carries first indication information, and the second terminal device determines the resource multiplexing mode according to the controlling signaling, including: the second terminal equipment obtains the first indication information from the control signaling; the first indication information is used for indicating a resource multiplexing mode.
The scheme provides a method for displaying and indicating the resource multiplexing mode of the receiving end.
In one possible design, the determining, by the second terminal device, the resource multiplexing mode according to the control signaling includes:
the second terminal device determines the resource multiplexing mode according to a mapping relationship between the relevant information of the control signaling and second indication information, where the second indication information is used for indicating the resource multiplexing mode, and the relevant information of the control signaling includes at least one of the following items:
demodulating a cyclic offset of a demodulation reference signal (DMRS) sequence of the control channel carrying the control signaling;
an orthogonal convolutional code OCC of the DMRS sequence;
a root sequence of the DMRS sequence;
scrambling code of the control signaling;
a cyclic redundancy check, CRC, mask of the control signaling;
a Control Channel Element (CCE) index number of the control channel;
a control resource set identification of the control channel;
a search space identification of the control channel;
a symbol position of the control channel;
a number of symbols of the control channel;
a slot position of the control channel;
the number of time slots of the control channel;
an RB position of the control channel; alternatively, the first and second electrodes may be,
a number of RBs of the control channel.
According to the scheme, the resource multiplexing mode of the receiving end is indicated in an implicit mode, and compared with the display indication, the transmission resource of the control signaling does not need to be occupied, so that the signaling overhead is further saved.
In a possible design, the resource multiplexing mode is any one of time division multiplexing, frequency division multiplexing, and embedded multiplexing.
In one possible design, the control signaling carries at least one of the following parameters: the number of symbols of the data channel, the number of slots of the data channel, the time domain spacing between the data channel and the control channel, the number of RBs of the data channel, or the frequency domain spacing between the data channel and the control channel.
In one possible design, the detecting, by the second terminal device, the data sent by the first terminal device from the data channel according to the resource multiplexing mode includes: and the second terminal equipment detects the data sent by the first terminal equipment from the data channel according to the resource multiplexing mode and the parameters carried by the control signaling.
In a possible design, if the resource multiplexing mode is time division multiplexing, the control signaling carries at least one of the number of symbols of the data channel, the number of slots of the data channel, or the time interval between the data channel and the control channel, and the number of RBs of the data channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is frequency division multiplexing, the control signaling carries the number of symbols of the data channel or the number of time slots of the data channel, and the control signaling also carries at least one of the number of RBs of the data channel and the frequency domain interval between the data channel and the control channel.
In a possible design, if the resource multiplexing mode is time division multiplexing and the frequency domain bandwidths of the control channel and the data channel are the same, the control signaling carries at least one of the number of symbols of the data channel, the number of time slots of the data channel, or the time domain interval between the data channel and the control channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is time division multiplexing and the frequency domain bandwidths of the control channel and the data channel are different, the control signaling carries the number of RBs included in the data channel, and the control signaling also carries at least one of the number of symbols of the data channel, the number of time slots of the data channel, or the time domain interval between the data channel and the control channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is frequency division multiplexing and the time domain lengths of the control channel and the data channel are the same, the control signaling carries the RB number of the data channel and/or the frequency domain interval of the data channel and the control channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is frequency division multiplexing and the time domain lengths of the control channel and the data channel are different, the control signaling carries the number of symbols of the data channel or the number of time slots of the data channel, and the control signaling also carries the number of RBs included in the data channel and/or the frequency domain interval between the data channel and the control channel.
In one possible design, the control channel and the data channel are located in the same resource pool.
In a third aspect, an embodiment of the present application provides a communication method, including:
the network equipment determines at least one frequency domain resource; the at least one frequency domain resource is used for the first terminal equipment to send control signaling and/or data to the second terminal equipment, and the resource multiplexing modes corresponding to different frequency domain resources are different and are used for indicating the multiplexing relationship between the resource bearing the control signaling and the resource bearing the data;
the network device sends resource configuration information to the first terminal device, and sends first indication information to the first terminal device and the second terminal device, wherein the resource configuration information comprises information of the at least one frequency domain resource; the first indication information is used for indicating a resource multiplexing mode of the at least one frequency domain resource.
According to the scheme, different resources correspond to different resource multiplexing modes, so that the sending end sends the control signaling and data on different resources according to different resource multiplexing modes, and the receiving end can determine the resource multiplexing mode according to the resource where the received control signaling is located.
In one possible design, before the network device determines the at least one frequency domain resource, the method further includes: the network device receives second indication information sent by the first terminal device, wherein the second indication information is used for indicating the service type of the service processed by the first terminal device or the capability of the first terminal device; the network device determining at least one frequency domain resource, comprising: the network equipment determines the at least one frequency domain resource according to the second indication information.
In one possible design, the capability of the first terminal device includes a processing delay of the first terminal device and/or a cache capability of the first terminal device.
In one possible design, the frequency domain resource is a resource pool or a bandwidth part BWP or a carrier.
In one possible design, the sending, by the network device, the resource configuration information to the first terminal device and the first indication information to the first terminal device includes:
when the first indication information is used for indicating a resource multiplexing mode of at least one BWP, the network device sends BWP configuration information to the first terminal device, where the BWP configuration information includes the resource configuration information and the first indication information; alternatively, the first and second electrodes may be,
when the first indication information is used to indicate the resource multiplexing mode of the at least one carrier, the network device sends carrier configuration information to the first terminal device, where the carrier configuration information includes the resource configuration information and the first indication information.
According to the scheme, different resource multiplexing modes corresponding to the BWPs or the carriers are indicated when the BWPs are configured or the carriers are configured, and signaling overhead is saved.
In a possible design, the resource multiplexing mode is any one of time division multiplexing, frequency division multiplexing, and embedded multiplexing.
In a fourth aspect, an embodiment of the present application provides a communication method, including: the method comprises the steps that a first terminal device receives resource configuration information sent by a network device and receives first indication information sent by the network device; the resource configuration information includes information of at least one frequency domain resource configured for a terminal device including the first terminal device, the first indication information is used to indicate a resource multiplexing mode of the at least one frequency domain resource, resource multiplexing modes corresponding to different frequency domain resources are different, and the resource multiplexing mode is used to indicate a multiplexing relationship between a resource carrying control signaling and a resource carrying data; and the first terminal equipment sends control signaling and/or data to the second terminal equipment through one frequency domain resource in the at least one frequency domain resource according to the information of the at least one frequency domain resource and the first indication information.
According to the scheme, different resources correspond to different resource multiplexing modes, so that the sending end sends the control signaling and data on different resources according to different resource multiplexing modes, and the receiving end can determine the resource multiplexing mode according to the resource where the received control signaling is located.
In one possible design, the frequency domain resource is a resource pool or a bandwidth part BWP or a carrier.
In one possible design, the receiving, by the first terminal device, first indication information sent by a network device includes:
when the first indication information is used to indicate a resource multiplexing mode of the at least one BWP, the first terminal device receives BWP configuration information sent by the network device, where the BWP configuration information includes the resource configuration information and the first indication information; alternatively, the first and second electrodes may be,
when the first indication information is used to indicate a resource multiplexing mode of the at least one carrier, the first terminal device receives carrier configuration information sent by the network device, where the carrier configuration information includes the resource configuration information and the first indication information.
In a possible design, before the first terminal device receives the resource configuration information sent by the network device, the method further includes:
and the first terminal device sends second indication information to the network device, wherein the second indication information is used for indicating the service type of the service processed by the first terminal device or the capability of the first terminal device.
In one possible design, the capability of the first terminal device includes a processing delay of the first terminal device and/or a cache capability of the first terminal device.
In a fifth aspect, an embodiment of the present application provides a communication method, including: the second terminal equipment receives first indication information sent by the network equipment and receives a control instruction sent by the first terminal equipment; the first indication information is used for indicating a resource multiplexing mode of at least one frequency domain resource, the resource multiplexing modes corresponding to different frequency domain resources are different, and the resource multiplexing mode is used for indicating a multiplexing relationship between a resource carrying control signaling and a resource carrying data; and the first terminal equipment determines the resource for bearing the data according to the resource for bearing the control instruction and the first indication information, and detects the data from the resource for bearing the data.
In one possible design, the frequency domain resource is a resource pool or a bandwidth part BWP or a carrier.
In a sixth aspect, an apparatus is provided. The apparatus provided by the present application has the functionality to implement the behavior of the terminal device or the network device in the above-described method aspect, which comprises means (means) corresponding to the steps or functionalities described for performing the above-described method aspect. The steps or functions may be implemented by software, or by hardware (e.g., a circuit), or by a combination of hardware and software.
In one possible design, the apparatus includes one or more processors and a communication unit. The one or more processors are configured to support the apparatus to perform the corresponding functions of the terminal device in the above method. For example, a resource multiplexing mode is determined, and the resource multiplexing mode is indicated to the second terminal device through the control signaling. The communication unit is used for supporting the device to communicate with other equipment and realizing receiving and/or sending functions. For example, control signaling, data are transmitted.
Optionally, the apparatus may also include one or more memories for coupling with the processor that hold the necessary program instructions and/or data for the apparatus. The one or more memories may be integral with the processor or separate from the processor. The present application is not limited.
The apparatus may be a smart terminal or a wearable device, and the communication unit may be a transceiver or a transceiver circuit. Optionally, the transceiver may also be an input/output circuit or interface.
The device may also be a communication chip. The communication unit may be an input/output circuit or an interface of the communication chip.
In another possible design, the apparatus includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver or the input/output circuit to transceive signals, the memory is configured to store a computer program, and the processor is configured to execute the computer program in the memory, so that the apparatus performs the method performed by the first terminal device in any one of the possible implementations of the first aspect or the first aspect, or performs the method performed by the second terminal device in any one of the possible implementations of the second aspect or the second aspect, or performs the method performed by the first terminal device in any one of the possible implementations of the fourth aspect or the fourth aspect, or performs the method performed by the second terminal device in any one of the possible implementations of the fifth aspect or the fifth aspect.
In one possible design, the apparatus includes one or more processors and a communication unit. The one or more processors are configured to support the apparatus to perform the corresponding functions of the network device in the above method. For example, the frequency domain resources are determined, and the frequency domain resources and the resource multiplexing mode are indicated to the terminal device. The communication unit is used for supporting the device to communicate with other equipment and realizing receiving and/or sending functions. For example, the resource configuration information and the first indication information indicating the resource multiplexing method of the at least one frequency domain resource are transmitted.
Optionally, the apparatus may also include one or more memories for coupling with the processor, which stores program instructions and/or data necessary for the network device. The one or more memories may be integral with the processor or separate from the processor. The present application is not limited.
The apparatus may be a base station, a gNB, a TRP, or the like, and the communication unit may be a transceiver, or a transceiver circuit. Optionally, the transceiver may also be an input/output circuit or interface.
The device may also be a communication chip. The communication unit may be an input/output circuit or an interface of the communication chip.
In another possible design, the apparatus includes a transceiver, a processor, and a memory. The processor is configured to control the transceiver or the input/output circuit to transceive signals, the memory is configured to store a computer program, and the processor is configured to execute the computer program in the memory, so that the apparatus performs the method performed by the network device in the third aspect or any of the possible implementations of the third aspect.
In a seventh aspect, a system is provided, where the system includes the terminal device and the network device.
In an eighth aspect, a computer-readable storage medium is provided for storing a computer program comprising instructions for carrying out the method of the first aspect or any one of the possible implementations of the first aspect, or comprising instructions for carrying out the method of the second aspect or any one of the possible implementations of the second aspect, or comprising instructions for carrying out the method of the fourth aspect or any one of the possible implementations of the fourth aspect, or comprising instructions for carrying out the method of the fifth aspect or any one of the possible implementations of the fifth aspect.
In a ninth aspect, there is provided a computer readable storage medium for storing a computer program comprising instructions for performing the method of the third aspect or any of the possible implementations of the third aspect.
In a tenth aspect, there is provided a computer program product comprising: computer program code for causing a computer to perform the method of any one of the possible implementations of the first aspect or the first aspect described above, or the method of any one of the possible implementations of the second aspect or the second aspect, or the method of any one of the possible implementations of the fourth aspect or the fourth aspect, or the method of any one of the possible implementations of the fifth aspect or the fifth aspect, when said computer program code is run on a computer.
In an eleventh aspect, there is provided a computer program product comprising: computer program code for causing a computer to perform the method of any of the possible implementations of the third aspect and the third aspect as described above, when the computer program code runs on a computer.
Drawings
Fig. 1A is a schematic diagram of a communication system architecture according to an embodiment of the present application;
fig. 1B is a schematic diagram illustrating a correspondence relationship between a subcarrier spacing and a symbol length according to an embodiment of the present application;
fig. 2 is a schematic view of a scene D2D provided in an embodiment of the present application;
fig. 3 is a schematic scheduling diagram of a D2D scenario provided in an embodiment of the present application;
FIG. 4 is a schematic view of V2X provided in the embodiments of the present application;
fig. 5 is a schematic diagram of a resource pool to which an existing SA and data belong according to an embodiment of the present application;
FIG. 6 is a diagram illustrating an SA and data sharing resource pool according to an embodiment of the present disclosure;
fig. 7 is a schematic diagram of a resource multiplexing method according to an embodiment of the present application;
fig. 8 is a flowchart illustrating a communication method according to an embodiment of the present application;
fig. 9 is a schematic resource multiplexing relationship diagram of a control channel and a data channel according to an embodiment of the present application;
fig. 10 is a schematic flow chart of another communication method provided in the embodiment of the present application;
fig. 11 is a schematic diagram illustrating different resource multiplexing modes corresponding to different resource pools according to an embodiment of the present application;
fig. 12 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;
fig. 13 is a schematic structural diagram of a network device according to an embodiment of the present application;
fig. 14 is a schematic structural diagram of a communication device according to an embodiment of the present application.
Detailed Description
The embodiments of the present application may be applied to, but not limited to, a fifth generation mobile communication (5G) system, such as a New Radio (NR) system, a 4G system, such as an LTE system, a long term evolution-advanced (LTE-a) system, an enhanced Long Term Evolution (LTE) system, and other communication systems, and may also be extended to related cellular systems, such as wireless fidelity (WiFi), worldwide interoperability for microwave access (wimax), future wireless communication systems, and 3 GPP. The embodiments of the present application can be applied to, but are not limited to, a D2D communication scenario, a V2X communication scenario, and a Machine Type Communication (MTC)/machine to machine (M2M) communication scenario. For the convenience of understanding the embodiments of the present application, a communication system applied to the embodiments of the present application will be first described in detail by taking the communication system shown in fig. 1A as an example. Fig. 1A shows a schematic diagram of a communication system suitable for the communication method of the embodiment of the present application. As shown in fig. 1A, the communication system includes a network device 11 and a first terminal device 12 and a second terminal device 13, the network device 11 may be configured with a plurality of antennas, and the first terminal device 12 and the second terminal device 13 may also be configured with a plurality of antennas.
It should be understood that network device 102 or network device 104 may also include a number of components associated with signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, etc.). In addition, the number of network devices and the number of terminal devices included in the system are not particularly limited in the present application.
This application is intended to present various aspects, embodiments or features around a system that may include a number of devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. Furthermore, a combination of these schemes may also be used.
In addition, in the embodiments of the present application, the word "exemplary" is used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term using examples is intended to present concepts in a concrete fashion.
In the embodiment of the present application, information (information), signal (signal), message (message), channel (channel) may be mixed, and it should be noted that the intended meanings are consistent when the differences are not emphasized. "of", "corresponding", and "corresponding" may sometimes be used in combination, it being noted that the intended meaning is consistent when no distinction is made.
Hereinafter, technical concepts in the present application are explained to facilitate understanding by those skilled in the art.
(1) Network device
In an embodiment of the application, a network device, which may be referred to as a Radio Access Network (RAN) device, may be, for example, a base station, a Transmission and Reception Point (TRP) or an access node, where the access node may specifically be a base station in a global system for mobile communication (GSM) system or a Code Division Multiple Access (CDMA) system, may also be a base station (NodeB) in a Wideband Code Division Multiple Access (WCDMA) system, may also be an evolved node B (eNB or eNodeB) in an LTE system, or may be a base station device, a small base station device, a wireless access node (WiFi AP), a wireless microwave access base station (WiMAX) in a 5G network, and the like, and is not limited to the base station, the TRP, or the access node.
(2) Terminal device
In the embodiment of the present application, the terminal device may be a D2D device, may be an MTC/M2M device, and may also be a terminal device applied in a vehicle networking, for example, may be a terminal device accessing the vehicle networking, for example, may be a vehicle-mounted terminal device; terminal equipment, which may also be referred to as an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user device, etc. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capability, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, an internet of things terminal device, such as a fire detection sensor, a smart water/electricity meter, a plant monitoring device, etc., or a vehicle networking terminal device.
(3) Type of service
The traffic types may include, but are not limited to: an ultra-reliable ultra-low latency communications (urlcc) type, an enhanced mobile broadband (eMBB) type, and a massive machine type connection (mtc) type. Future communications may be divided into more traffic types.
The eMBB type aims at services with high data rate and high mobility; the urrllc type may be for high reliability and low latency traffic; mtc types may be directed to services that require large amounts of data, small data volumes, tolerable latency, and infrequent access (e.g., sensor, wearable device services).
For example, the scenario to which the URLLC type can be applied includes unmanned driving, industrial control, etc., and requires low delay and high reliability, the specific requirement of the low delay is end-to-end 0.5ms delay, the interaction of air interface information makes a round trip for 1ms delay, and the specific requirement of the high reliability is that the block error rate BLER reaches 10^ (-5), that is, the correct reception ratio of the data packet reaches 99.999%.
(4) Subcarrier spacing
In 5G NR, various subcarrier spacings are introduced, and different carriers may have different subcarrier spacings. The baseline is 15kHz, can be 15kHz 2n, n is an integer from 3.75, 7.5 to 480kHz, and generally comprises 8 species. Correspondingly, there are various symbol lengths and slot lengths in the 5 GNR. Referring to an example shown in fig. 1B, symbol lengths corresponding to different subcarrier spacings are used.
In the time domain, in the 5G NR, one timeslot may be composed of at least one of downlink transmission, guard interval GP, uplink transmission, and the like; the structure of such slots is called a Slot Format Indicator (SFI), and there may be up to 256 types of slots.
In the frequency domain, since the 5G NR single carrier bandwidth can reach 400MHz, a bandwidth part (BWP) is defined in one carrier, which may also be referred to as a carrier bandwidth part (carrier bandwidth part). BWP includes several resource units, such as Resource Blocks (RBs), in succession in the frequency domain. The bandwidth portion may be a downlink or uplink bandwidth portion, and the terminal device receives or transmits data on a data channel within the activated bandwidth portion.
The network device may configure multiple DL/UL BWPs to the terminal device through higher layer signaling, such as Radio Resource Control (RRC), and activate one of the DL/UL BWPs (one uplink/downlink) to the UE through physical layer signaling DCI, so that the UE has multiple BWPs configuring Downlink (DL)/Uplink (UL) within one carrier, but only one DL/UL BWP is activated. When the active BWP needs to be switched, the network device may switch the active BWP from BWP1 to BWP2 through Downlink Control Information (DCI). In the current protocol, DCI can only indicate to switch downlink active BWPs, and after receiving a Physical Downlink Control Channel (PDCCH), the terminal device switches to a new BWP to receive a Physical Downlink Shared Channel (PDSCH); the uplink scheduling signaling indicates switching of the uplink activated BWP, and after receiving the PDCCH, the terminal device switches to a new BWP to transmit a Physical Uplink Shared Channel (PUSCH).
(5) D2D communication
In order to improve the spectrum utilization and utilize the radio frequency capability of the existing terminal equipment to the maximum extent, the D2D communication link may be called a Sidelink (SL), and may reuse the spectrum resources of the existing mobile communication network. In order not to interfere with terminal devices of the existing network, the D2D communication does not use the LTE-a downlink (eNB to D2D device link) spectrum resources, but only multiplexes the LTE-a system uplink (D2D device to eNB link) spectrum resources, because the interference rejection capability of the base station is relatively much better than that of the ordinary D2D device. The D2D devices occupy the uplink spectrum resources and may use time division multiplexing, so that there is no need to support simultaneous transceiving, either transmitting or receiving at one time.
In Rel-12/13 version, the D2D scenario can be divided into 3 categories, with, partial, and no network coverage, respectively, as shown in fig. 2. In a network coverage scenario, the D2D device is within the coverage of the base station. In a partial network coverage scenario, some D2D devices are in the coverage of the base station, and another D2D device is not in the coverage of the base station, and in a scenario without network coverage, all D2D devices are not in the coverage of the base station. If the D2D device can hear the base station's signal, it is the D2D device in the network coverage. A partial network coverage D2D device if one D2D device can hear signals from other D2D devices within network coverage. If the first two signal D2D devices can not receive the signal, the signal is a D2D device outside the network coverage.
D2D communication is divided into two types, D2D device discovery and D2D device communication, and D2D device discovery transmits only discovery signals, specifically, discovery signals are transmitted on a Physical Sidelink Discovery Channel (PSDCH). D2D devices communicate control signaling and data. Control signaling, namely SA, has different SCI formats and is carried in a Physical Sidelink Control Channel (PSCCH) for transmission; data bearers are sent on a physical sidelink shared channel (pscch). In addition, the D2D communication link is referred to as a Side Link (SL) as opposed to the Uplink (UL) and Downlink (DL) in LTE.
There are two modes of resource allocation for D2D device communication. Mode one (Mode 1) is a centralized control method, the resources of D2D are allocated by a central control device, such as a base station or a relay station, and the resources are allocated to the D2D device on the transmitting side by a scheduling method. The centralized control type resource allocation mode mainly aims at a scene with network coverage. Mode two (Mode 2) is a contention-based distributed resource multiplexing method, and the device at the sender D2D obtains resources for sending control signaling and data from a resource pool in a contention manner. In a network coverage scenario, the resource pool is a whole block of resources separated by the base station, and the D2D device on the sender contends for a small block of resources in the whole block of resources. In the scenario without network coverage, the resource pool is a predefined piece of system bandwidth that can be obtained by the D2D device of the sender, and the D2D device of the sender contends for resources under the predefined system bandwidth.
There are two types of resource allocation schemes for D2D device discovery. Type one (Type 1) is a contention-based distributed resource multiplexing method, and a resource for transmitting a discovery signal is obtained from a resource pool by a D2D device of a transmitting side in a contention manner. In a network coverage scenario, the resource pool is a whole block of resources separated by the base station, and the D2D device on the sender contends for a small block of resources in the whole block of resources. In the scenario without network coverage, the resource pool is that the D2D device can obtain a predefined piece of system bandwidth, and the D2D device of the sender contends for the resource under the predefined resource. Type two (Type 2) is a centralized control method, resources for the D2D device to send the discovery signal are allocated by a central control device, such as a base station or a relay station, the resources are allocated to the D2D device on the sender side by a scheduling method, and the centralized control Type resource allocation mainly aims at the network coverage scenario.
For the contention-based resource allocation method such as Mode2 and Type1, different D2D devices may contend for the same resource without coordination of the central controller, and thus generate a conflict; when the number of D2D devices is large, the probability of such a collision situation is high.
For D2D device communication, the D2D device at the sender sends the control signaling SA (repeatedly sent 2 times), which carries the relevant information of the data, and then sends the data (repeatedly sent 4 times), and fig. 3 shows a schematic diagram of Mode 1. Mode2 is similar, except that there is no base station, and the resource is randomly selected by the D2D device of the sender; the D2D device of the receiving party firstly blindly detects the SA, and if the SA is correctly received and the ID in the SA is matched with at least one ID in the ID list in the D2D device of the receiving party, the data is received according to the related information of the data carried in the SA.
The SA may use SCI format 0, and the SCI format 0 includes fields (related information of data) as shown in table 1 below.
TABLE 1
Figure BDA0001814094480000111
Figure BDA0001814094480000121
(6) V2X communication
V2X communication is one of the primary applications of D2D communication. The V2X specifically includes three application requirements of V2V, V2P and V2I/N, as shown in FIG. 4. V2V refers to LTE-based inter-vehicle communication; V2P refers to LTE-based vehicle-to-person communication (including pedestrians, cyclists, drivers, or passengers); V2I refers to LTE-based vehicle to roadside equipment (RSU) communication, and further, V2N may be included in V2I, and V2N refers to LTE-based vehicle to base station/network communication.
The RSU comprises two types, one type is a terminal type RSU, and the terminal type RSU is in a non-mobile state due to being distributed at the roadside, so that the mobility does not need to be considered; the other is a base station type RSU that can provide timing synchronization and resource scheduling to the vehicles with which it communicates.
For V2X communication, in order to guarantee the delay requirement, the terminal device at the sending end may send control signaling SA and data at the same time in one subframe, as shown in fig. 5, where the resource carrying the control signaling and the resource carrying the data belong to different resource pools. In fig. 5, the resource pool carrying the control signaling is referred to as an SA resource pool (SApool), and the resource pool carrying the data is referred to as a data resource pool (data pool).
The terminal equipment of the receiving party firstly blindly detects the SA and needs to buffer the data of the same subframe at the same time, because the data scheduled by the SA is possibly in the same subframe, if the SA is correctly received and the ID in the SA is matched with the ID of the receiving party, whether to demodulate/decode the buffered data (the same subframe) or receive the subsequent data (different subframes) is determined according to the related information of the data carried in the SA.
In order to reduce the peak-to-average power ratio (PAPR), it is preferable that the resources where the SA and the data are located are contiguous for one UE. One possible way is: the SAs and the data share a resource pool, and the SAs and the data can be placed in series in the frequency domain, as shown in fig. 6, the SAs and the data of the UE1 and the UE2 share one resource pool.
(7) Resource multiplexing mode
In 5G NR, V2X may support multiple resource multiplexing modes of a control channel occupied by control signaling and a data channel occupied by data in communication, where the resource multiplexing mode may be a TDM, FDMRS, or embedded multiplexing mode.
The TDM may further include two types, which are TDM, where the frequency domain bandwidth of the data channel is the same as that of the control channel, and the frequency domain bandwidth of the TDM is different from that of the control channel. The FDM may also include two types, which are FDM and the time domain lengths of the data channel and the control channel are the same, and FDM and the time domain lengths of the data channel and the control channel are different.
As an example, the resource multiplexing manner may include the following 5 manners, as shown in fig. 7.
The first method is as follows: the TDM and data channels have the same frequency domain bandwidth as the control channel, i.e., C1 and D1 in fig. 7.
The second method comprises the following steps: the TDM and data channels have different frequency domain bandwidths from the control channel, but the start positions of the data frequency domains are the same as the control, i.e., C2 and D2 in fig. 7.
The third method comprises the following steps: FDM and the time domain lengths of the data and control channels are the same, i.e., C3 and D3 in fig. 7.
The method is as follows: the data channel and the control channel are embedded multiplexing, and the control channel is in the area of the data channel, i.e. C4 and D4 in fig. 7. Referring to fig. 7, the control channel occupies resources of the data channel, and when data is transmitted, the data is transmitted in resources of the data channel other than the resources occupied by the control channel.
The fifth mode is as follows: the FDM and data and control time domain lengths are different, but the start position of the data time domain is the same as the control, i.e. C5 and D5 in fig. 7.
In the present application, "at least one" means one or more, "and" a plurality "means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.
In the 5G communication system, the above multiple resource multiplexing modes can be adopted, but the existing communication mode between terminal devices is not suitable for a scenario supported by multiple resource multiplexing modes. In a scenario of simultaneously supporting at least two resource multiplexing modes, how to implement reasonable resource allocation and how to indicate the resource multiplexing mode between the control channel and the data channel to the terminal of the receiving party is a problem to be solved by the present application.
Based on this, embodiments of the present application provide a communication method and apparatus, so as to solve the problem that the prior art cannot be applied to a scenario supported by multiple resource multiplexing modes. The method and the device are based on the same inventive concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.
In order to solve the above problem, one possible solution is to instruct the receiver resource multiplexing manner by the sender, and another possible solution is to instruct, by the network device, the resource multiplexing manner corresponding to the resource pools of the sender and the receiver in a frequency domain resource configuration manner, where the frequency domain resource may be a resource pool or BWP or carrier. Different frequency domain resources correspond to different resource multiplexing modes.
Referring to fig. 8, a schematic flow chart of a communication method provided in the embodiment of the present application is shown. The scheme depicted in fig. 8 is: by way of the sender indicating the receiver resources. For describing the scheme, in the embodiment of the present application, a terminal device of a sender is referred to as a first terminal device, and a terminal device of a receiver is referred to as a second terminal device. It should be noted that one or more terminal devices on the receiving side may be used, and this embodiment of the present application is not particularly limited to this, and a terminal device on one receiving side is taken as an example for description.
S101, a first terminal device determines a resource multiplexing mode, the resource multiplexing mode represents a resource multiplexing relation between a control channel and a data channel, the control channel is used for the first terminal device to send a control signaling to a second terminal device, and the data channel is used for the first terminal device to send data to the second terminal device.
And S102, the first terminal equipment indicates the resource multiplexing mode to the second terminal equipment through a control signaling.
The method may further comprise:
s103, the first terminal equipment sends data to the second terminal equipment through the data channel according to the resource multiplexing mode. In other words, the first terminal device can determine the time-frequency resource location of the data channel for transmitting data according to the resource multiplexing mode, so as to transmit data to the second terminal device through the data channel.
When the first terminal device sends the control signaling and the data to the second terminal device, the control signaling and the data can be sent at the same time or at different times, and the control signaling and the data are determined according to the resource multiplexing mode.
And S104, the second terminal equipment receives the control signaling sent by the first terminal equipment from the control channel.
And S105, the second terminal equipment determines a resource multiplexing mode according to the control signaling.
The time sequence of S103, S104, and S105 is not particularly limited. S103 may be earlier than S104, or S103 later than S104, or later than S105.
And S106, the second terminal equipment detects the data sent by the first terminal equipment from the data channel according to the resource multiplexing mode. In other words, the second terminal device can determine the time-frequency resource location occupied by the data channel according to the resource multiplexing mode, so as to detect data on the determined data channel.
In one possible example, the control channel and the data channel are located in the same resource pool. The resources occupied by the control channel may be located at a specific position of the resource pool, and the specific position may be a specific frequency domain position, or a specific time frequency position. For example, the control channel is located at a specific frequency domain position of the resource pool, as shown by the dashed line in fig. 9. The first terminal device of the sender sends the control channel of the sidelink (sidelink) at the specific position, so that the second terminal device of the receiver only needs to receive the control channel of the sidelink at the specific position, and the workload of blind detection of the control channel is reduced. The position of the data channel in the resource pool may not be limited, and any resource not occupied by the control channel may be used as the data channel for transmitting data.
In one possible example, the specific location of the control channel in the resource pool may be preconfigured by the network device. For example, the network device sends resource configuration information to the first terminal device and the second terminal device, where the resource configuration information includes specific location information of a resource pool that can be occupied by the control channel. The first terminal device may determine a control channel according to the resource configuration information, and send a control signaling to the second terminal device through the determined control channel.
Under the condition that the control channel and the data channel are located in the same resource pool, the resource pool can support a plurality of resource multiplexing modes. For example, the resource multiplexing relationship between the control channel and the data channel in the resource pool may be TDM, FDM, or an embedded multiplexing mode. For example, the resource pool can simultaneously support 5 resource multiplexing modes shown in fig. 7. Referring to fig. 9, the time-frequency resource positions of the control channel and the data channel in the resource pool are shown. Wherein, the multiplexing relationship between the control channel C1 and the data channel D1 is a first mode of resource multiplexing mode; the multiplexing relationship between the control channel C2 and the data channel D2 is a third mode of resource multiplexing mode; the multiplexing relationship between the control channel C3 and the data channel D3 is a second mode of resource multiplexing mode; the multiplexing relationship between the control channel C4 and the data channel D4 is a fourth mode of resource multiplexing.
The terminal device of the receiving party may be one, multiple or unlimited, and the corresponding communication mode is unicast, multicast or broadcast. For example, when the terminal device 0 of the sender transmits on the link a, the terminal device 1 of the receiver may receive on the link a in a unicast scenario, the terminal device 2 of the receiver and the terminal device 3 of the receiver may receive on the link a in a multicast scenario, and the receiving device X that may receive a signal of the terminal device 0 of the sender may receive on the link a in a broadcast scenario.
Unicast may have multiple sets of links. That is, one transmitting terminal device 0 can independently communicate with terminal devices of a plurality of receiving sides. For example, when the terminal device 0 on the transmission side transmits on the link a, the terminal device 1 on the reception side receives on the link a, and when the terminal device 0 on the transmission side transmits on the link B, the terminal device 2 on the reception side receives on the link B.
For example, when terminal device 1 sends control signaling and data to terminal device 2 and terminal device 3 on the receiving side, terminal device 1 may use control channel C1 and data channel C1 in the resource pool, and when terminal device 1 sends control signaling and data to terminal device 3, terminal device 1 may use control channel C3 and data channel C3 in the resource pool. The resource pool may be a resource configured to be shared by multiple senders. For example, when terminal a sends control signaling and data to terminal C, control channel C2 and data channel C2 of the resource pool may be used, and when terminal b sends control signaling and data to terminal d, control channel C4 and data channel C4 of the resource pool may be used.
In a possible implementation manner, the first terminal device indicates the resource multiplexing manner to the second terminal device, which may be implemented as follows:
a first possible way: the first terminal equipment indicates the resource multiplexing mode through a method for displaying the signaling indication.
A second possible way: the first terminal equipment indicates the resource multiplexing mode through an implicit indication method.
For the first feasible manner, the control signaling may carry first indication information, where the first indication information is used to indicate a resource multiplexing manner. For example, the control signaling may include a resource multiplexing field, where the resource multiplexing field includes first indication information, and indicates different resource multiplexing modes when the first indication information is different values.
For example, when there are four resource multiplexing modes, the mode one-mode four, the resource multiplexing field may occupy 2 bits. Exemplary, 00 indicates the first way: TDM and the frequency domain bandwidth of the data channel is the same as that of the control channel; indication mode two of 01: TDM but the frequency domain bandwidths of the data channel and the control channel are different; the indication mode 10 is as follows: FDM and data and control time domain length are the same; the indication mode four of 11: the data channel and the control channel are in an embedded multiplexing mode, and the control channel is in the area of the data channel. Of course, when the resource multiplexing mode includes more types, more bits may be used to indicate more resource multiplexing modes, for example, the 100 indication mode is five: FDM and the data and control time domain length are different; and so on.
After the first terminal device determines the resource multiplexing mode, the first terminal device sends a control signaling to the second terminal device through a control channel, wherein the control signaling carries first indication information. When the second terminal device receives the control signaling sent by the first terminal device from the control channel, the resource multiplexing mode indicated by the first terminal device is determined, which may be implemented as follows: and the second terminal equipment analyzes the control signaling to obtain the first indication information, wherein the first indication information is used for indicating a resource multiplexing mode.
For the second possible approach:
the first terminal device and the second terminal device may be configured with a mapping relationship between the relevant information of the control signaling and the second indication information in advance. The second indication information is used for indicating a resource multiplexing mode. For example, the second indication information may be an identifier of the resource multiplexing mode, such as an index of the resource multiplexing mode.
The information related to the control signaling may include at least one of: the information related to the control signaling comprises at least one of:
demodulating a cyclic offset of a demodulation reference signal (DMRS) sequence of the control channel carrying the control signaling;
an orthogonal convolutional code OCC of the DMRS sequence;
a root sequence of the DMRS sequence;
scrambling code of the control signaling;
a cyclic redundancy check, CRC, mask of the control signaling;
a Control Channel Element (CCE) index number of the control channel;
a control resource set identification of the control channel;
a search space identification of the control channel;
a symbol position of the control channel;
a number of symbols of the control channel;
a slot position of the control channel;
the number of time slots of the control channel;
an RB position of the control channel; alternatively, the first and second electrodes may be,
a number of RBs of the control channel.
If the quantity of the related information of the control signaling is greater than the quantity of the resource multiplexing modes, a mode of taking a modulus of the related information of the control signaling to the resource multiplexing modes can be used. The result after the modulus is taken has a mapping relation with the resource multiplexing mode.
If the quantity of the related information of the control signaling is smaller than the quantity of the resource multiplexing mode, a mode of taking a modulus of the related information of the control signaling by using the resource multiplexing mode can be used. The result after the modulus has a mapping relation with the relevant information of the control signaling.
In one possible example, the first terminal device may indicate the resource multiplexing manner by a cyclic offset CS or an orthogonal convolutional code OCC or a root sequence for demodulation of the DMRS of the control channel. Wherein, a cyclic offset of a demodulation reference signal (DMRS) sequence used for demodulating the control channel indicates a resource multiplexing mode; or, the orthogonal convolutional code OCC of one of the DMRS sequences indicates a resource multiplexing mode; or, a root sequence of one of the DMRS sequences indicates a resource multiplexing manner.
For example, TDM is indicated when CS is 0, FDM is indicated when CS is 6, and so on. Alternatively, CS ═ 0 indicates mode one, and CS ═ 6 indicates mode three.
For example, the resource multiplexing method corresponding to the CS or OCC of the DMRS sequence may be configured in advance by the network device to the sender and the receiver.
When the first terminal equipment indicates the resource multiplexing mode to the second terminal equipment through the cyclic offset of the DMRS of the control channel, one cyclic offset used for demodulating the DMRS sequence of the control channel indicates one resource multiplexing mode, so that the second terminal equipment can determine the resource multiplexing mode according to the cyclic offset CS of the DMRS adopted by the demodulation control channel when determining the resource multiplexing mode indicated by the first terminal equipment.
When a first terminal device indicates a resource multiplexing mode to a second terminal device through the OCC of the DMRS of the control channel, the OCC of one DMRS sequence indicates a resource multiplexing mode, so that the second terminal device can determine the resource multiplexing mode according to the OCC of the DMRS when determining the resource multiplexing mode indicated by the first terminal device.
When a first terminal device indicates a resource multiplexing mode to a second terminal device through a root sequence of a DMRS of a control channel, the root sequence of one DMRS sequence indicates one resource multiplexing mode, so that the second terminal device can determine the resource multiplexing mode according to the root sequence of the DMRS when determining the resource multiplexing mode indicated by the first terminal device.
In another possible example, the first terminal device may indicate the resource multiplexing manner to the second terminal device through a scrambling code of the control signaling or a Cyclic Redundancy Check (CRC) mask of the control signaling. For example, a scrambling code of one of the control signaling indicates a resource multiplexing mode; alternatively, a CRC mask used to verify the control signaling indicates a resource multiplexing mode.
For example, the resource multiplexing mode corresponding to the scrambling code or the CRC mask may be configured in advance by the network device to the transmitting side and the receiving side.
When a first terminal device can indicate a resource multiplexing mode to a second terminal device through a scrambling code of a control signaling, one scrambling code of the control signaling indicates one resource multiplexing mode, so that the second terminal device can determine the resource multiplexing mode indicated by the first terminal device according to the scrambling code adopted for decoding the control signaling.
When a first terminal device can indicate a resource multiplexing mode to a second terminal device through a CRC mask of a control signaling, one CRC mask of the control signaling indicates one resource multiplexing mode, so that the second terminal device can determine the resource multiplexing mode according to the CRC mask adopted by decoding the control signaling when determining the resource multiplexing mode indicated by the first terminal device.
In yet another possible example, the first terminal device may indicate the resource multiplexing manner through a resource occupied by a control channel carrying the control signaling.
The resources occupied by the control channel may include at least one of:
a Control Channel Element (CCE) index of the control channel, a control resource set identification (CORESET ID) of the control channel, a search space identification of the control channel, a symbol position of the control channel, a symbol number of the control channel, a slot position of the control channel, a slot number of the control channel, an RB number of the control channel, and an RB position of the control channel.
And a mapping relation exists between the resources occupied by the at least one described control channel and second indication information, and the second indication information is used for indicating a resource multiplexing mode. And the second terminal equipment determines the resources occupied by the control channel when the control signaling is obtained by decoding the control channel, so that the resource multiplexing mode is determined based on the mapping relation between the resources occupied by the control channel and the second indication information.
The mapping relationship between the resources occupied by the control channel and the second indication information may be pre-configured by the network device to the sender and the receiver.
As an example, a mapping relationship exists between a control channel element CCE index number of the control channel and second indication information, where the second indication information is used for indicating the resource multiplexing manner; when the second terminal device determines the resource multiplexing mode indicated by the first terminal device, the second terminal device may determine the resource multiplexing mode according to the CCE index number of the control channel.
Or, a mapping relationship exists between the control resource set identifier of the control channel and the second indication information; when the second terminal device determines the resource multiplexing mode indicated by the first terminal device, the second terminal device may determine the resource multiplexing mode according to the control resource set identifier of the control channel.
Or, when the second terminal device determines the resource multiplexing mode indicated by the first terminal device, the second terminal device may determine the resource multiplexing mode according to the search space identifier of the control channel.
Or, there is a mapping relationship between the symbol position of the control channel and the second indication information; when the second terminal device determines the resource multiplexing mode indicated by the first terminal device, the second terminal device may determine the resource multiplexing mode according to the symbol position of the control channel.
Or, a mapping relation exists between the number of symbols of the control channel and the second indication information; and when the second terminal equipment determines the resource multiplexing mode indicated by the first terminal equipment, the second terminal equipment determines the resource multiplexing mode according to the symbol number of the control channel.
Or, there is a mapping relationship between the symbol number and the symbol position of the control channel and the second indication information; and when the second terminal equipment determines the resource multiplexing mode indicated by the first terminal equipment, the second terminal equipment determines the resource multiplexing mode according to the symbol number and the symbol position of the control channel.
Or, a mapping relationship exists between the time slot position of the control channel and the second indication information; and when the second terminal equipment determines the resource multiplexing mode indicated by the first terminal equipment, the second terminal equipment determines the resource multiplexing mode according to the time slot position of the control channel.
Or, a mapping relationship exists between the number of time slots of the control channel and the second indication information; and when the second terminal equipment determines the resource multiplexing mode indicated by the first terminal equipment, the second terminal equipment determines the resource multiplexing mode according to the time slot number of the control channel.
Or, a mapping relation exists between the time slot number and the time slot position of the control channel and the second indication information; and when the second terminal equipment determines the resource multiplexing mode indicated by the first terminal equipment, the second terminal equipment determines the resource multiplexing mode according to the time slot number and the time slot position of the control channel.
Or, a mapping relationship exists between the RB position of the control channel and the second indication information; and when the second terminal equipment determines the resource multiplexing mode indicated by the first terminal equipment, the second terminal equipment determines the resource multiplexing mode according to the RB position of the control channel.
Or, a mapping relationship exists between the number of RBs of the control channel and the second indication information. And when the second terminal equipment determines the resource multiplexing mode indicated by the first terminal equipment, the second terminal equipment determines the resource multiplexing mode according to the RB quantity of the control channel.
Or, a mapping relation exists between the number of RBs and the position of the RBs of the control channel and the second indication information; and when the second terminal equipment determines the resource multiplexing mode indicated by the first terminal equipment, the second terminal equipment determines the resource multiplexing mode according to the RB number and the RB position of the control channel.
After the first terminal equipment of the sender indicates the resource multiplexing mode to the second terminal equipment, the resource position occupied by the data channel can be further indicated to the second terminal equipment by the control signaling carrying at least one item of information as follows:
the number of symbols of the data channel, the number of slots of the data channel, the time domain spacing between the data channel and the control channel, the number of RBs of the data channel, or the frequency domain spacing between the data channel and the control channel.
When the second terminal device detects the data sent by the first terminal device from the data channel according to the resource multiplexing mode, the second terminal device may detect the data sent by the first terminal device from the data channel according to the resource multiplexing mode and the at least one item of information carried by the control signaling.
In addition, in order to further reduce the overhead of the control signaling, a specific method may be used for a specific resource multiplexing manner to reduce the overhead.
For example, if the resource multiplexing mode is time division multiplexing and the frequency domain bandwidths of the control channel and the data channel are the same, the control signaling may carry at least one of the number of symbols of the data channel, the number of time slots of the data channel, or the time domain interval between the data channel and the control channel.
Or, if the resource multiplexing mode is time division multiplexing and the frequency domain bandwidths of the control channel and the data channel are different, the control signaling may carry the number of RBs included in the data channel, and the control signaling also carries at least one of the number of symbols of the data channel, the number of slots of the data channel, or the time domain interval between the data channel and the control channel.
Or, if the resource multiplexing mode is frequency division multiplexing and the time domain lengths of the control channel and the data channel are the same, the control signaling may carry the number of RBs of the data channel and/or the frequency domain interval between the data channel and the control channel.
Or, if the resource multiplexing mode is frequency division multiplexing and the time domain lengths of the control channel and the data channel are different, the control signaling may carry the number of symbols of the data channel or the number of time slots of the data channel, and the control signaling also carries the number of RBs included in the data channel and/or the frequency domain interval between the data channel and the control channel.
In the embodiment of the application, a sender does not need to indicate the resources occupied by the data channel through a time-frequency resource pattern (12-20 bits are needed), but indicates a resource multiplexing mode (2-3 bits) between the control channel and the data channel by a sender, a receiver can determine the multiplexing relation between the data channel and the control channel according to the resource multiplexing mode, and the sender only needs to further occupy less bits to indicate the exact time-frequency position of the data channel, so that the signaling overhead is reduced.
Another possible scheme is that the network device indicates, by way of frequency domain resource configuration, a resource multiplexing manner corresponding to the resource pools of the sender and the receiver, where the frequency domain resource may be a resource pool or BWP or a carrier. Different frequency domain resources correspond to different resource multiplexing modes.
Referring to fig. 10, a schematic flow chart of another communication method provided in the embodiment of the present application is shown. The scheme depicted in fig. 10 is: the network device indicates a resource multiplexing mode corresponding to the resource pools of the sender and the receiver through a mode of frequency domain resource configuration, and the frequency domain resource may be a resource pool or BWP or a carrier. Different frequency domain resources correspond to different resource multiplexing modes. For describing the scheme, in the embodiment of the present application, a terminal device of a sender is referred to as a first terminal device, and a terminal device of a receiver is referred to as a second terminal device. It should be noted that one or more terminal devices on the receiving side may be used, and this embodiment of the present application is not particularly limited to this, and a terminal device on one receiving side is taken as an example for description.
S1001, a network device determines at least one frequency domain resource, wherein the frequency domain resource is a resource pool or a bandwidth part BWP or a carrier; the at least one frequency domain resource is used for the first terminal device to send control signaling and/or data to the second terminal device, and the resource multiplexing modes corresponding to different frequency domain resources are different and are used for indicating the multiplexing relationship between the resource carrying the control signaling and the resource carrying the data.
S1002, the network device sends resource configuration information to the first terminal device.
The resource configuration information includes information of at least one frequency domain resource configured for a terminal device including the first terminal device, the first indication information is used to indicate a resource multiplexing manner of the at least one frequency domain resource, the frequency domain resource is a resource pool or a bandwidth part BWP or a carrier, resource multiplexing manners corresponding to different frequency domain resources are different, and the resource multiplexing manner is used to indicate a multiplexing relationship between a resource carrying control signaling and a resource carrying data. The information of the at least one frequency domain resource may be location information of the at least one frequency domain resource, or quantity information of the at least one frequency domain resource, or location and quantity information of the at least one frequency domain resource.
S1003, the network device sends first indication information to the first terminal device and the second terminal device.
For example, the first indication information may be included in the resource configuration information. The resource configuration information includes information of at least one frequency domain resource and also includes first indication information.
Illustratively, the first indication information may be a separate information. I.e. the first indication information is not included in the resource configuration information.
For example, when the frequency domain resource is BWP, the resource configuration information and the first indication information may be both included in the BWP configuration information and indicated to the first terminal device by a message. That is, when the first indication information is used to indicate the resource multiplexing mode of the at least one BWP, the network device sends BWP configuration information to the first terminal, where the BWP configuration information includes the resource configuration information and the first indication information, and the first terminal device receives the BWP configuration information.
For example, when the frequency domain resource is a carrier, the resource configuration information and the first indication information may both be included in the carrier configuration information and indicated to the first terminal device through one message. That is, when the first indication information is used to indicate the resource multiplexing mode of the at least one carrier, the network device sends carrier configuration information to the first terminal, and the first terminal receives the carrier configuration information sent by the network device, where the carrier configuration information includes the resource configuration information and the first indication information.
S1004, after the first terminal device receives the resource configuration information and the first indication information sent by the network device, the first terminal device sends a control signaling and/or data to the second terminal device through one of the at least one frequency domain resource according to the resource configuration information and the first indication information.
S1005, the second terminal device receives the first indication information sent by the network device.
S1006, the second terminal device detects the control signaling sent by the first terminal device.
S1007, the second terminal device determines the resource carrying the data according to the first indication information and the resource carrying the control signaling.
S1008, the second terminal device detects the data from the determined resource carrying the data.
In a feasible example, in a case that the network device indicates the first indication information to the first terminal device and the second terminal device when sending the BWP configuration information or the carrier configuration information to the first terminal device, the network device configures a different resource pool for the first terminal device on a different BWP or carrier when configuring the resource pool for the first terminal device. The first terminal device obtains the resource multiplexing modes allowed to be adopted in different resource pools by receiving the BWP configuration information or the carrier configuration information. The first terminal device of the sender sends the control signaling and the data on the resource pool in a corresponding resource multiplexing mode, so that the receiver receives the control signaling and the data in the corresponding resource multiplexing mode.
When configuring a resource pool or carrier or BWP for a terminal device as a sender, a network device may consider the service type of a service processed by the terminal device and the capability of the terminal device. Different service types and different requirements for delay, for example, URLLC service has higher requirements for delay, and TDM may be used. The capabilities of the terminal device may include processing latency of the terminal device and buffering capabilities of the terminal device. For a terminal device which has no buffering capacity and is used as a sender, a TDM mode can be considered; for a terminal device with a strong processing delay capability, an FDM manner may be considered.
The first terminal device may send first indication information to a network device, where the second indication information is used to indicate a service type of a service processed by the first terminal device or a capability of the first terminal device. After receiving the second indication information sent by the first terminal device, the network device configures a resource pool, a carrier, or a BWP for the first terminal device according to the second indication information.
As an example, see fig. 11, a resource pool corresponding to the first resource multiplexing mode and a resource pool corresponding to the second resource multiplexing mode are illustrated.
By the above method, since the resource multiplexing mode is bound to the resource pool/BWP/carrier, the terminal device of the sender and the terminal device of the receiver can know the resource multiplexing mode used on the corresponding resource directly from the configuration of the base station. Under the condition, the terminal equipment of the sender does not need to indicate the resource multiplexing mode of the terminal equipment of the receiver when sending the control signaling, and the signaling overhead is further reduced.
The communication device according to the embodiment of the present application is described in detail below with reference to fig. 12 to 14.
Fig. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application. The terminal device can be applied to the system shown in fig. 1A, and performs the functions of the terminal device (including the terminal device of the sender and the terminal device of the receiver) in the above method embodiment. For convenience of explanation, fig. 12 shows only main components of the terminal device. As shown in fig. 12, the terminal device 120 includes a processor, a memory, a control circuit, an antenna, and an input-output means. The processor is mainly configured to process the communication protocol and the communication data, control the entire terminal device, execute a software program, and process data of the software program, for example, to support the first terminal device or the second terminal device to perform the actions described in the above method embodiments, such as sending control signaling or data. The memory is mainly used for storing software programs and data, for example, storing the corresponding relationship between the indication information and the combination information described in the above embodiments. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The control circuit and the antenna together, which may also be called a transceiver, are mainly used for transceiving radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user.
When the terminal device is turned on, the processor can read the software program in the storage unit, interpret and execute the instruction of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data.
Those skilled in the art will appreciate that fig. 12 shows only one memory and one processor for ease of illustration. In an actual terminal device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this embodiment of the present application.
As an alternative implementation manner, the processor may include a baseband processor and/or a central processing unit, where the baseband processor is mainly used to process the communication protocol and the communication data, and the central processing unit is mainly used to control the whole terminal device, execute a software program, and process data of the software program. The processor of fig. 12 may integrate the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the terminal device may include a plurality of baseband processors to accommodate different network formats, the terminal device may include a plurality of central processors to enhance its processing capability, and various components of the terminal device may be connected by various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
In the embodiment of the present application, an antenna and a control circuit having a transceiving function may be regarded as the transceiving unit 1201 of the terminal device 120, for example, for supporting the terminal device to perform a receiving function and a transmitting function as described in fig. 8 or fig. 10. A processor having a processing function is considered as the processing unit 1202 of the terminal device 120. As shown in fig. 12, the terminal device 120 includes a transceiving unit 1201 and a processing unit 1202. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. Optionally, a device for implementing a receiving function in the transceiving unit 1201 may be regarded as a receiving unit, and a device for implementing a sending function in the transceiving unit 1201 may be regarded as a sending unit, that is, the transceiving unit 1201 includes a receiving unit and a sending unit, the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, and the like, and the sending unit may be referred to as a transmitter, a sending circuit, and the like.
The processor 1202 may be configured to execute the instructions stored in the memory, so as to control the transceiving unit 1201 to receive and/or transmit signals, thereby implementing the functions of the terminal device in the foregoing method embodiments. As an implementation manner, the function of the transceiving unit 1201 may be considered to be implemented by a transceiving circuit or a dedicated chip for transceiving.
Fig. 13 is a schematic structural diagram of a network device provided in an embodiment of the present application, for example, a schematic structural diagram of a base station. As shown in fig. 13, the base station can be applied to the system shown in fig. 1A, and performs the functions of the network device in the above method embodiment. The base station 130 may include one or more radio frequency units, such as a Remote Radio Unit (RRU) 1301 and one or more baseband units (BBUs) (also referred to as digital units, DUs) 1302. The RRU 1301 may be referred to as a transceiver unit, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 13011 and a radio frequency unit 13012. The RRU 1301 is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals, for example, to send the resource configuration information described in the above embodiments to a terminal device. The BBU 1302 is mainly used for performing baseband processing, controlling a base station, and the like. The RRU 1301 and the BBU 1302 may be physically disposed together, or may be physically disposed separately, that is, a distributed base station.
The BBU 1302 is a control center of a base station, and may also be referred to as a processing unit, and is mainly used for performing baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and the like. For example, the BBU (processing unit) 1302 can be used to control the base station to execute the operation flow related to the network device in the above method embodiment.
In an example, the BBU 1302 may be formed by one or more boards, and the boards may jointly support a radio access network with a single access indication (e.g., an LTE network or a 5G network), or may respectively support radio access networks with different access systems (e.g., an LTE network, a 5G network or other networks). The BBU 1302 further includes a memory 13021 and a processor 13022, where the memory 13021 is used to store necessary instructions and data. For example, the memory 13021 stores the correspondence between the frequency domain resources and the resource multiplexing method in the above-described embodiment. The processor 13022 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation flow related to the network device in the above method embodiment. The memory 13021 and processor 13022 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.
Fig. 14 shows a schematic structure of a communication apparatus 1400. The apparatus 1400 may be used to implement the methods described in the above method embodiments, and reference may be made to the description of the above method embodiments. The communication apparatus 1400 may be a chip, a network device (e.g., a base station), a terminal device or other network devices.
The communication device 1400 includes one or more processors 1401. The processor 1401 may be a general purpose processor, a special purpose processor, or the like. For example, a baseband processor, or a central processor. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control a communication device (e.g., a base station, a terminal, or a chip), execute a software program, and process data of the software program. The communication device may include a transceiving unit to enable input (reception) and output (transmission) of signals. For example, the communication device may be a chip, and the transceiving unit may be an input and/or output circuit of the chip, or a communication interface. The chip can be used for a terminal or a base station or other network equipment. As another example, the communication device may be a terminal or a base station or other network equipment, and the transceiver unit may be a transceiver, a radio frequency chip, or the like.
The communication apparatus 1400 includes one or more processors 1401, and the one or more processors 1401 may implement the method of the network device or the terminal device in the embodiments shown in fig. 8 or fig. 10.
In one possible design, the communications apparatus 1400 includes means (means) for generating control signaling, and means (means) for sending control signaling. The functions of generating means for control signaling and sending means for control signaling may be implemented by one or more processors. The control signaling may be generated by one or more processors, for example, and sent through a transceiver, or an interface of an input/output circuit, or chip. The control signaling may refer to the related description in the above method embodiments.
In one possible design, the communications apparatus 1400 includes means (means) for receiving control signaling, and means (means) for receiving data according to the control signaling. The control signaling and how to receive data according to the control signaling may be referred to in the related description of the above method embodiments. The control signaling may be received, for example, via a transceiver, or an interface of an input/output circuit, or chip, and data may be received by one or more processors in accordance with the control signaling.
Alternatively, the processor 1401 may implement other functions in addition to the method of the embodiment shown in fig. 8 or fig. 10.
Alternatively, in one design, the processor 1401 may execute instructions that cause the communication device 1400 to perform the methods described in the method embodiments above. The instructions may be stored in whole or in part within the processor, such as instructions 1403, or in whole or in part in a memory 1402 coupled to the processor, such as instructions 1404, or collectively may cause the communication device 1400 to perform the methods described in the method embodiments above, via instructions 1403 and 1404.
In yet another possible design, the communication apparatus 1400 may also include a circuit, which may implement the functions of the network device or the terminal device in the foregoing method embodiments.
In yet another possible design, the communication device 1400 may include one or more memories 1402 with instructions 1404 stored thereon, which are executable on the processor to cause the communication device 1400 to perform the methods described in the above method embodiments. Optionally, the memory may further store data therein. Instructions and/or data may also be stored in the optional processor. For example, the one or more memories 1402 may store the corresponding relations described in the above embodiments, or the related parameters or tables referred to in the above embodiments, and the like. The processor and the memory may be provided separately or may be integrated together.
In yet another possible design, the communication device 1400 may further include a transceiver 1405 and an antenna 1406. The processor 1401 may be referred to as a processing unit and controls a communication apparatus (terminal or base station). The transceiver unit 1405 can be called a transceiver, a transceiving circuit, or a transceiver, etc. for implementing transceiving function of the communication device through the antenna 1406.
The present application also provides a communication system, which includes the aforementioned one or more network devices, and a plurality of terminal devices.
It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip having signal processing capability. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.
It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
The present application further provides a computer-readable medium, on which a computer program is stored, where the computer program is executed by a computer to implement the communication method in any of the above method embodiments.
The embodiment of the present application further provides a computer program product, and when executed by a computer, the computer program product implements the communication method described in any of the above method embodiments.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.
The embodiment of the application also provides a processing device, which comprises a processor and an interface; the processor is configured to execute the communication method according to any one of the above method embodiments.
It should be understood that the processing device may be a chip, the processor may be implemented by hardware or software, and when implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated in the processor, located external to the processor, or stand-alone.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Additionally, the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that in the embodiment of the present application, "B corresponding to a" means that B is associated with a, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.
Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented in hardware, firmware, or a combination thereof. When implemented in software, the functions described above may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. Taking this as an example but not limiting: computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Furthermore, the method is simple. Any connection is properly termed a computer-readable medium. For example, if software is transmitted from a website, a server, or other remote source using a coaxial cable, a fiber optic cable, a twisted pair, a Digital Subscriber Line (DSL), or a wireless technology such as infrared, radio, and microwave, the coaxial cable, the fiber optic cable, the twisted pair, the DSL, or the wireless technology such as infrared, radio, and microwave are included in the fixation of the medium. Disk and disc, as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy Disk and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (30)

1. A method of communication, comprising:
a first terminal device determines a resource multiplexing mode, wherein the resource multiplexing mode represents a resource multiplexing relation between a control channel and a data channel, the control channel is used for the first terminal device to send a control signaling to a second terminal device, and the data channel is used for the first terminal device to send data to the second terminal device;
and the first terminal equipment indicates the resource multiplexing mode to the second terminal equipment through the control signaling.
2. The method of claim 1, wherein the first terminal device indicating the resource multiplexing mode to the second terminal device through the control signaling comprises:
the first terminal equipment sends the control signaling to the second terminal equipment through the control channel, and the control signaling carries first indication information;
the first indication information is used for indicating a resource multiplexing mode.
3. The method of claim 1, wherein the first terminal device indicating the resource multiplexing mode to the second terminal device through the control signaling comprises:
the first terminal equipment sends the control signaling to second terminal equipment through the control channel;
wherein, there is a mapping relationship between the related information of the control signaling and second indication information, the second indication information is used for indicating a resource multiplexing mode, and the related information of the control signaling includes at least one of the following items:
demodulating a cyclic offset of a demodulation reference signal (DMRS) sequence of the control channel carrying the control signaling;
an orthogonal convolutional code OCC of the DMRS sequence;
a root sequence of the DMRS sequence;
scrambling code of the control signaling;
a cyclic redundancy check, CRC, mask of the control signaling;
a Control Channel Element (CCE) index number of the control channel;
a control resource set identification of the control channel;
a search space identification of the control channel;
a symbol position of the control channel;
a number of symbols of the control channel;
a slot position of the control channel;
the number of time slots of the control channel;
an RB position of the control channel; alternatively, the first and second electrodes may be,
a number of RBs of the control channel.
4. The method of any one of claims 1-3, wherein:
the resource multiplexing mode is any one of time division multiplexing, frequency division multiplexing and embedded multiplexing.
5. The method of any of claims 2-4, wherein:
the control signaling carries at least one of the following information:
the number of symbols of the data channel, the number of slots of the data channel, the time domain spacing between the data channel and the control channel, the number of RBs of the data channel, or the frequency domain spacing between the data channel and the control channel.
6. The method of claim 5, wherein:
if the resource multiplexing mode is time division multiplexing, the control signaling carries at least one of the symbol number of the data channel, the time slot number of the data channel, or the time domain interval between the data channel and the control channel, and the RB number of the data channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is frequency division multiplexing, the control signaling carries the number of symbols of the data channel or the number of time slots of the data channel, and the control signaling also carries at least one of the number of RBs of the data channel and the frequency domain interval between the data channel and the control channel.
7. The method of claim 5 or 6, wherein:
if the resource multiplexing mode is time division multiplexing and the frequency domain bandwidth of the control channel is the same as that of the data channel, the control signaling carries at least one of the symbol number of the data channel, the time slot number of the data channel, or the time domain interval of the data channel and the control channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is time division multiplexing and the frequency domain bandwidths of the control channel and the data channel are different, the control signaling carries the number of RBs included in the data channel, and the control signaling also carries at least one of the number of symbols of the data channel, the number of time slots of the data channel, or the time domain interval between the data channel and the control channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is frequency division multiplexing and the time domain lengths of the control channel and the data channel are the same, the control signaling carries at least one of the RB number of the data channel and the frequency domain interval of the data channel and the control channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is frequency division multiplexing and the time domain lengths of the control channel and the data channel are different, the control signaling carries the symbol number of the data channel or the time slot number of the data channel, and the control signaling also carries at least one of the number of RBs included in the data channel and the frequency domain interval between the data channel and the control channel.
8. The method of any one of claims 1-7, wherein:
the control channel and the data channel are located in the same resource pool.
9. A method of communication, comprising:
the second terminal equipment receives a control signaling sent by the first terminal equipment from a control channel;
the second terminal device determines a resource multiplexing mode according to the control signaling, the resource multiplexing mode represents a resource multiplexing relationship between the control channel and a data channel, the control channel is used for the first terminal device to send the control signaling to the second terminal device, and the data channel is used for the first terminal device to send data to the second terminal device;
and the second terminal equipment detects the data sent by the first terminal equipment from the data channel according to the resource multiplexing mode.
10. The method of claim 9, wherein the control signaling carries first indication information, and the second terminal device determines the resource multiplexing mode according to the control signaling, including:
the second terminal equipment obtains the first indication information from the control signaling;
the first indication information is used for indicating a resource multiplexing mode.
11. The method of claim 9, wherein the determining the resource multiplexing mode by the second terminal device according to the control signaling comprises:
the second terminal device determines the resource multiplexing mode according to the mapping relationship between the relevant information of the control signaling and second indication information, wherein the second indication information is used for indicating the resource multiplexing mode:
the information related to the control signaling comprises at least one of:
demodulating a cyclic offset of a demodulation reference signal (DMRS) sequence of the control channel carrying the control signaling;
an orthogonal convolutional code OCC of the DMRS sequence;
a root sequence of the DMRS sequence;
scrambling code of the control signaling;
a cyclic redundancy check, CRC, mask of the control signaling;
a Control Channel Element (CCE) index number of the control channel;
a control resource set identification of the control channel;
a search space identification of the control channel;
a symbol position of the control channel;
a number of symbols of the control channel;
a slot position of the control channel;
the number of time slots of the control channel;
an RB position of the control channel; alternatively, the first and second electrodes may be,
a number of RBs of the control channel.
12. The method of any of claims 9-11, wherein:
the resource multiplexing mode is any one of time division multiplexing, frequency division multiplexing and embedded multiplexing.
13. The method according to any of claims 10-12, wherein the control signaling carries at least one of the following parameters:
the number of symbols of the data channel, the number of slots of the data channel, the time domain spacing between the data channel and the control channel, the number of RBs of the data channel, or the frequency domain spacing between the data channel and the control channel.
14. The method of claim 13, wherein the detecting, by the second terminal device, the data transmitted by the first terminal device from the data channel according to the resource multiplexing mode comprises:
and the second terminal equipment detects the data sent by the first terminal equipment from the data channel according to the resource multiplexing mode and the parameters carried by the control signaling.
15. The method of claim 13 or 14, wherein:
if the resource multiplexing mode is time division multiplexing, the control signaling carries at least one of the symbol number of the data channel, the time slot number of the data channel, or the time domain interval between the data channel and the control channel, and the RB number of the data channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is frequency division multiplexing, the control signaling carries the number of symbols of the data channel or the number of time slots of the data channel, and the control signaling also carries at least one of the number of RBs of the data channel and the frequency domain interval between the data channel and the control channel.
16. The method of any one of claims 13-15, wherein:
if the resource multiplexing mode is time division multiplexing and the frequency domain bandwidth of the control channel is the same as that of the data channel, the control signaling carries at least one of the symbol number of the data channel, the time slot number of the data channel, or the time domain interval of the data channel and the control channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is time division multiplexing and the frequency domain bandwidths of the control channel and the data channel are different, the control signaling carries the number of RBs included in the data channel, and the control signaling also carries at least one of the number of symbols of the data channel, the number of time slots of the data channel, or the time domain interval between the data channel and the control channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is frequency division multiplexing and the time domain lengths of the control channel and the data channel are the same, the control signaling carries the RB number of the data channel and/or the frequency domain interval of the data channel and the control channel; alternatively, the first and second electrodes may be,
if the resource multiplexing mode is frequency division multiplexing and the time domain lengths of the control channel and the data channel are different, the control signaling carries the number of symbols of the data channel or the number of time slots of the data channel, and the control signaling also carries the number of RBs included in the data channel and/or the frequency domain interval between the data channel and the control channel.
17. The method of any one of claims 9-16, wherein:
the control channel and the data channel are located in the same resource pool.
18. A method of communication, comprising:
the network equipment determines at least one frequency domain resource; the at least one frequency domain resource is used for the first terminal equipment to send control signaling and/or data to the second terminal equipment, and the resource multiplexing modes corresponding to different frequency domain resources are different and are used for indicating the multiplexing relationship between the resource bearing the control signaling and the resource bearing the data;
the network device sends resource configuration information to the first terminal device, and sends first indication information to the first terminal device and the second terminal device, wherein the resource configuration information comprises information of the at least one frequency domain resource; the first indication information is used for indicating a resource multiplexing mode of the at least one frequency domain resource.
19. The method of claim 18, wherein prior to the network device determining at least one frequency domain resource, further comprising:
the network device receives second indication information sent by the first terminal device, wherein the second indication information is used for indicating the service type of the service processed by the first terminal device or the capability of the first terminal device;
the network device determining at least one frequency domain resource, comprising:
the network equipment determines the at least one frequency domain resource according to the second indication information.
20. The method according to claim 18 or 19, wherein the capabilities of the first terminal device comprise processing latency of the first terminal device and/or buffering capabilities of the first terminal device.
21. The method according to any of claims 18-20, wherein the frequency domain resource is a resource pool or a bandwidth part BWP or a carrier.
22. The method of claim 21, wherein the network device sending resource configuration information to the first terminal device and first indication information to the first terminal device comprises:
when the first indication information is used for indicating a resource multiplexing mode of at least one BWP, the network device sends BWP configuration information to the first terminal device, where the BWP configuration information includes the resource configuration information and the first indication information; alternatively, the first and second electrodes may be,
when the first indication information is used to indicate the resource multiplexing mode of the at least one carrier, the network device sends carrier configuration information to the first terminal device, where the carrier configuration information includes the resource configuration information and the first indication information.
23. The method of any one of claims 18-22, wherein:
the resource multiplexing mode is any one of time division multiplexing, frequency division multiplexing and embedded multiplexing.
24. A method of communication, comprising:
the method comprises the steps that a first terminal device receives resource configuration information sent by a network device and receives first indication information sent by the network device;
the resource configuration information includes information of at least one frequency domain resource configured for a terminal device including the first terminal device, the first indication information is used to indicate a resource multiplexing mode of the at least one frequency domain resource, resource multiplexing modes corresponding to different frequency domain resources are different, and the resource multiplexing mode is used to indicate a multiplexing relationship between a resource carrying control signaling and a resource carrying data;
and the first terminal equipment sends control signaling and/or data to the second terminal equipment through one frequency domain resource in the at least one frequency domain resource according to the information of the at least one frequency domain resource and the first indication information.
25. The method of claim 24, wherein the frequency domain resource is a resource pool or a bandwidth part BWP or a carrier.
26. The method of claim 25, wherein the first terminal device receives first indication information sent by a network device, and comprises:
when the first indication information is used to indicate a resource multiplexing mode of the at least one BWP, the first terminal device receives BWP configuration information sent by the network device, where the BWP configuration information includes the resource configuration information and the first indication information; alternatively, the first and second electrodes may be,
when the first indication information is used to indicate a resource multiplexing mode of the at least one carrier, the first terminal device receives carrier configuration information sent by the network device, where the carrier configuration information includes the resource configuration information and the first indication information.
27. The method of any one of claims 24-26, wherein before the first terminal device receives the resource configuration information sent by the network device, the method further comprises:
and the first terminal device sends second indication information to the network device, wherein the second indication information is used for indicating the service type of the service processed by the first terminal device or the capability of the first terminal device.
28. The method of claim 27, wherein the capabilities of the first terminal device comprise processing latency of the first terminal device and/or buffering capabilities of the first terminal device.
29. An apparatus comprising a processor and a memory, wherein:
the memory to store program instructions;
the processor is used for calling and executing the program instructions stored in the memory to realize the method of any one of claims 1 to 8, 9 to 17 and 24 to 30.
30. An apparatus comprising a processor and a memory, wherein:
the memory to store program instructions;
the processor, configured to call and execute program instructions stored in the memory, to implement the method according to any one of claims 18 to 23.
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