WO2022141464A1 - 通信方法及装置 - Google Patents

通信方法及装置 Download PDF

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Publication number
WO2022141464A1
WO2022141464A1 PCT/CN2020/142308 CN2020142308W WO2022141464A1 WO 2022141464 A1 WO2022141464 A1 WO 2022141464A1 CN 2020142308 W CN2020142308 W CN 2020142308W WO 2022141464 A1 WO2022141464 A1 WO 2022141464A1
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Prior art keywords
terminal
resource
reserved resource
conflict
reserved
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PCT/CN2020/142308
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English (en)
French (fr)
Inventor
董蕾
苏宏家
郭文婷
卢磊
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华为技术有限公司
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Priority to PCT/CN2020/142308 priority Critical patent/WO2022141464A1/zh
Publication of WO2022141464A1 publication Critical patent/WO2022141464A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of communication, and more particularly, to a communication method and apparatus.
  • D2D device-to-device
  • D2D technology can reduce the burden of cellular networks, reduce battery power consumption of user equipment, increase data rates, and can well meet the needs of proximity services.
  • the D2D technology allows multiple D2D-capable terminals to perform direct discovery and direct communication with or without network infrastructure.
  • the application scenario of the Internet of Vehicles based on D2D technology was proposed.
  • the direct communication in the Internet of Vehicles scenario requires very high latency, which cannot be realized by the existing D2D technology.
  • V2X communication refers to the communication between vehicles and anything in the outside world, including vehicle-to-vehicle communication (V2V), vehicle-to-pedestrian communication (V2P), vehicle-to-infrastructure communication ( vehicle to infrastructure, V2I) and vehicle-to-network communication (vehicle to network, V2N), etc.
  • V2V vehicle-to-vehicle communication
  • V2P vehicle-to-pedestrian communication
  • V2I vehicle-to-infrastructure communication
  • V2N vehicle-to-network communication
  • LTE V2X solves some basic requirements in V2X scenarios, but for future application scenarios such as fully intelligent driving and autonomous driving, existing LTE V2X cannot effectively support it.
  • 5G NR V2X 5th generation new radio
  • Direct communication can support communication scenarios with and without network coverage, and its resource allocation method can adopt the network access device scheduling mode, such as the E-UTRAN Node B (eNB) scheduling mode. and terminal self-select mode.
  • the sending terminal autonomously selects resources for sideline information transmission based on sensing of resources within a time window.
  • the existing resource listening mechanism can avoid resource conflict to a certain extent.
  • the resource conflict may be that the resource selected by the sending terminal overlaps with the resource occupied or reserved by other terminals, but it still cannot meet the requirements of future direct communication. requirements for communication reliability.
  • the present application provides a communication method, which can improve communication reliability.
  • a communication method is provided, and the execution subject of the method may be a terminal, a combined device or component with terminal functions, or a communication chip (such as a processor, baseband chip, or system-on-chip, etc.).
  • the following description takes the execution subject being a terminal as an example.
  • the method includes: the first terminal determines that there is a resource conflict between the first reserved resource and the second reserved resource, wherein the first reserved resource is a reserved resource indicated by sideline control information from the second terminal, and the The second reserved resource belongs to at least one reserved resource indicated by sideline control information from one or more other terminals monitored by the first terminal in at least one time unit, and the at least one time unit is the second reserved resource.
  • the time unit that the terminal does not listen to.
  • the first terminal sends conflict indication information, wherein the conflict indication information is used to indicate a resource conflict on the first reserved resource and/or the second reserved resource.
  • the time unit that is not monitored by the second terminal includes a combination of one or more of the following: a time unit in which the second terminal is in a sending state, a time unit in which the second terminal is in a discontinuous reception DRX on The time unit of the time period, and the non-listening time unit determined by the second terminal in the partial sensing mode.
  • a time unit represents a scheduling unit in the time domain, and may be different time domain units in different communication systems or in different application scenarios, for example, a time unit may be a slot, a subframe, A symbol (symbol) or a mini-slot (mini-slot), etc., may also be other time-domain scheduling units, which are not limited in this application.
  • the problem that the second terminal cannot listen to the reserved information on these non-listening time units can be improved, and the possibility that the sending terminal may choose to communicate with other terminals can be reduced.
  • the probability of the reserved resources overlapping the resources can increase the transmission reliability and reduce the interference of the system.
  • a communication method is provided, and the execution body of the method may be a terminal, a combined device or component with terminal functions, or a communication chip (such as a processor, baseband chip, or system-on-chip, etc.).
  • a communication chip such as a processor, baseband chip, or system-on-chip, etc.
  • the method includes: the second terminal receives conflict indication information from the first terminal, where the conflict indication information is used to indicate a resource conflict on the first reserved resource or the second reserved resource, wherein the first reserved resource There is a resource conflict with the second reserved resource, the first reserved resource is the reserved resource indicated by the sideline control information sent by the second terminal, and the second reserved resource belongs to the second terminal At least one reserved resource indicated by sideline control information from one or more other terminals on at least one time unit that is not monitored. The second terminal reselects the first reserved resource, or drops the first reserved resource.
  • the problem that the second terminal cannot listen to the reservation information on these non-listening time units can be improved, and the possibility that the sending terminal may choose to reserve information with other terminals can be reduced.
  • the probability of the reserved resources overlapping the resources can increase the transmission reliability and reduce the interference of the system.
  • the first terminal may only monitor information on those time units that the second terminal does not monitor, such as SCIs from other terminals on those time units that the second terminal does not monitor, without considering other
  • the information on the time unit that the second terminal has monitored or can monitor can reduce the repetition of monitoring, reduce the processing complexity of the first terminal, and improve the efficiency while ensuring the correct rate.
  • the first terminal obtains at least one time unit that is not monitored by the second terminal through configuration signaling from the second terminal.
  • the second terminal can send configuration signaling to the first terminal before sending the SCI to other terminals, so that the first terminal can know in advance the unmonitored time unit of the second terminal, so that the first terminal has a longer processing time to improve the Determine the accuracy of resource conflicts.
  • the second reserved resource has a resource conflict with the first reserved resource, including: the first reserved resource and the second reserved resource.
  • the reserved resources overlap in time and frequency; and/or, the first reserved resources and the second reserved resources overlap in the time domain, and the first reserved resources and the second reserved resources are respectively used for
  • the second terminal sends sideline information and is used for the second terminal to receive sideline information; and/or, the first reserved resource and the second reserved resource overlap in the time domain, and the The first reserved resource and the second reserved resource are respectively used for the third terminal to receive sideline information and for the third terminal to send sideline information, wherein the third terminal is used to indicate the second reservation.
  • the sending terminal of the sideline control information of the resource is used to indicate the second reservation.
  • the first terminal can more accurately determine whether the resource conflict will affect the transmission of the first terminal. For example, when the measurement result of RSRP is lower than a certain threshold, even if the first reserved resource and the second reserved resource overlap in the time-frequency domain, the transmission of other terminals on the second reserved resource will not affect the second terminal. Serious interference is caused, and at this time, the first terminal does not send conflict indication information to the second terminal or the third terminal even if it is determined that there is a resource conflict. Further increase transmission reliability and avoid unnecessary resource reselection or resource abandonment.
  • the second reserved resource has a resource conflict with the first reserved resource, and the first reserved resource and the second reserved Resources overlap in time domain.
  • the first terminal only determines resource conflicts according to whether there is overlap in the time domain, which can simplify the behavior of the first terminal, and the first terminal does not need to base on other information of the second terminal or other terminals, and can reduce the The terminal determines the complexity of the resource conflict.
  • time units occupied by the first reserved resource and the second reserved resource that are partially or completely the same belong to overlapping in the time domain.
  • overlapping time-frequency resources includes that some or all of the time-frequency resources are the same.
  • the sending, by the first terminal, the conflict indication information includes: the first terminal sending the conflict indication information to the second terminal; or, the The first terminal sends the conflict indication information to a third terminal, where the third terminal is a sending terminal of sideline control information indicating the second reserved resource.
  • the sending, by the first terminal, the conflict indication information includes: when the priority value corresponding to the first reserved resource is smaller than the priority value corresponding to the second reserved resource
  • the first terminal sends the conflict indication information to a third terminal, and the third terminal is a sending terminal of the sideline control information indicating the second reserved resource; and/or , when the priority value corresponding to the second reserved resource is smaller than the priority value corresponding to the first reserved resource, the first terminal sends the conflict indication information to the second terminal.
  • the priority value corresponding to the first reserved resource is indicated by the sideline control information related to the first reserved resource
  • the priority value corresponding to the second reserved resource is indicated by the first reserved resource. 2. Indicated by the sideline control information related to the reserved resources.
  • the method before the first terminal sends the conflict indication information, the method further includes: determining, by the first terminal, a The RSRP measurement value of the reference signal received power is higher than the first threshold; or, the first terminal determines that the RSRP measurement value on the link between the first terminal and the third terminal is higher than that between the first terminal and the third terminal RSRP measurements on the link between the second terminals. Further increase transmission reliability and avoid unnecessary resource reselection or resource abandonment.
  • the method before the second terminal reselection or discarding the first reserved resource, the method further includes: the second terminal determines the second The RSRP measurement value on the link between the terminal and the first terminal is high and the second threshold. At this time, it is equivalent to that the second terminal verifies the validity of the conflict indication information based on the RSRP measurement value, which further increases the reliability of resource determination.
  • the conflict indication information is carried in a field containing one or more bits, and different values of the field are respectively used to indicate one of the following information: There is a resource conflict on the first reserved resource, and there is no resource conflict on the first reserved resource.
  • the indication method occupies less communication resources and has low implementation complexity.
  • the conflict indication information is used to indicate a resource conflict on the first reserved resource or the second reserved resource, including: the conflict indication
  • the information is used to indicate one or more sub-channels with resource conflict in the first reserved resource. This implementation manner can more precisely indicate the specific location of resource conflict on the reserved resources, and can avoid excessive resource exclusion when the terminal performs reselection or other corresponding operations based on the conflict indication information, thereby avoiding resource waste.
  • the conflict indication information is used to indicate a resource conflict on the first reserved resource or the second reserved resource, including: the conflict indication
  • the information is used to indicate one or more subchannels with resource conflict in the time unit where the first reserved resource is located.
  • This implementation can indicate more detailed resource occupancy, so the receiving terminal can more accurately perform resource reselection or other corresponding operations based on the conflict indication information, preventing re-selection of occupied resources during reselection, and avoiding excessive resources Eliminate waste of resources.
  • the sending, by the first terminal, the conflict indication information includes: the first terminal sending the conflict indication information on cooperative resources, the cooperative resources being based on the second The sending resource of the terminal is determined, or the cooperative resource is determined according to the first reserved resource.
  • the first terminal may send conflict indication information to the second terminal through the cooperation information, and the resources used for sending the cooperation information may have a corresponding relationship with the first reserved resources, Alternatively, there may be a corresponding relationship between the resources used for sending the cooperation information and the resources bearing the SCI indicating the first reserved resource.
  • the cooperating terminal can determine the resource for sending the conflict indication information, and the coordinated terminal can also determine the resource location of the conflicting indication information that may be sent according to the resource mapping relationship, and then go to the corresponding resource. Blind check on. In this way, the cooperating terminal and the cooperating terminal can directly know the sending position of the possible conflict indication information without the indication of signaling, which improves the efficiency of cooperative communication.
  • a communication device in a third aspect, has the function of implementing the method of the first aspect, and the beneficial effects can be referred to the description of the first aspect and will not be repeated here.
  • the communication device includes corresponding modules or components for performing the above-described methods.
  • the modules included in the apparatus may be implemented by software and/or hardware.
  • the communication device includes: a transceiver module and a processing module, which can implement the method in the first aspect or any possible implementation manner of the first aspect. For details, refer to the detailed description in the method example, It is not repeated here.
  • a communication device in a fourth aspect, has the function of implementing the method of the second aspect, and the beneficial effects can be referred to the description of the second aspect and will not be repeated here.
  • the communication device includes corresponding modules or components for performing the above-described methods.
  • the modules included in the apparatus may be implemented by software and/or hardware.
  • the communication device includes: a transceiver module and a processing module, which can implement the method in the second aspect or any possible implementation manner of the second aspect. For details, refer to the detailed description in the method example, It is not repeated here.
  • the communication device in the third aspect or the fourth aspect may be a terminal, and may also be a chip applied in the terminal or other combined devices, components, etc. that can realize the functions of the terminal.
  • the transceiver module may be a transmitter and a receiver, or an integrated transceiver, which may include an antenna and a radio frequency circuit, and the processing module may be a processor, such as a baseband chip.
  • the transceiver module may be a radio frequency unit
  • the processing module may be a processor.
  • the transceiver module can be an input and output interface of the chip system
  • the processing module can be a processor in the chip system, such as a central processing unit (central processing unit, CPU).
  • a communication device comprising one or more processors coupled to a memory and operable to execute programs or instructions in the memory, so that the device implements any of the above aspects or the method in any of the possible embodiments of this aspect.
  • the apparatus further includes one or more memories.
  • the apparatus further includes a communication interface to which the processor is coupled.
  • a sixth aspect provides a processing device, the processing device includes a processing module and an interface module, for example, applied to the above-mentioned communication device, for implementing the functions or methods involved in any of the above-mentioned aspects, the processing device, such as Can be a system-on-a-chip.
  • the chip system further includes a memory, and the memory is used for storing necessary program instructions and data to implement the functions of the method in the first aspect.
  • the chip system in the above aspects may be a system on chip (system on chip, SOC), or a baseband chip, etc.
  • the baseband chip may include a processor, a channel encoder, a digital signal processor, a modem, an interface module, and the like.
  • the input signal received by the input interface may be received and input by, for example, but not limited to, a receiver, and the signal output by the output interface may be, for example, but not limited to, output to and transmitted by the transmitter , and the input interface and the output interface can be the same integrated interface, which is used as the input interface and the output interface respectively at different times.
  • the embodiments of the present application do not limit the specific implementation manners of the processor and various interfaces.
  • the above-mentioned memory can be a non-transitory (non-transitory) memory, such as a read only memory (ROM), which can be integrated with the processor on the same chip, or can be respectively set on different chips.
  • ROM read only memory
  • the embodiments of the application do not limit the type of the memory and the setting manner of the memory and the processor.
  • the present application provides a communication system, including the communication device provided in the third aspect and the communication device provided in the fourth aspect.
  • the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed, any one of the above-mentioned aspects or any possible implementation manner of this aspect is implemented. method in .
  • a computer program product comprising: a computer program (also referred to as code, or instructions), which, when the computer program is executed, causes the computer to perform any one of the above-mentioned aspects or any of the aspects in this aspect. method in any of the possible implementations.
  • a computer program also referred to as code, or instructions
  • Fig. 1 shows an example diagram of a communication system structure
  • Figure 2 shows a schematic diagram of a V2X communication scenario
  • FIG. 3 shows an example diagram of candidate resources on a time slot
  • Fig. 4 shows an example diagram of a listening window and a selection window
  • FIG. 5 shows a schematic diagram of a trigger-based UE cooperation mechanism
  • FIG. 6 shows a schematic diagram of a fee-triggered UE cooperation mechanism
  • FIG. 7 shows a schematic diagram of an interaction flow of a communication method provided by the present application.
  • Figure 8 shows a schematic diagram of a DRX cycle
  • FIG. 9 shows an example diagram of determining a resource conflict by a method according to an embodiment of the present application.
  • FIG. 10 shows another example diagram of determining a resource conflict according to a method according to an embodiment of the present application.
  • FIG. 11 shows a specific example diagram of resource conflict in an embodiment of the present application.
  • Fig. 12 shows a schematic diagram of a mapping manner of cooperative resources
  • Figure 13 shows a schematic diagram of another collaborative resource mapping manner
  • FIG. 14 shows a schematic structural diagram of a communication apparatus provided by an embodiment of the present application.
  • FIG. 15 shows a schematic structural diagram of a processing apparatus provided by an embodiment of the present application.
  • FIG. 16 shows a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the methods and apparatuses provided in the embodiments of the present application can be applied to various communication systems, for example, a long term evolution (LTE) system, a fifth generation (5G) system, a new radio (NR) or Other communication systems that may appear in the future, etc.
  • LTE long term evolution
  • 5G fifth generation
  • NR new radio
  • the methods and apparatuses provided in the embodiments of the present application may be specifically applied to communication scenarios of terminal-to-terminal direct communication (direct communication) in various existing or future communication systems, such as device-to-device (device-to-device) communication scenarios.
  • device, D2D) communication scenarios, vehicle-to-everything (V2X) communication scenarios, and smart networked vehicles and other communication scenarios can also be applied to a communication scenario of backhaul link transmission between network devices and the like, which is not limited in this application.
  • FIG. 1 shows a schematic structural diagram of a communication system.
  • the communication system may include one or more network devices (only the network device 110 is shown in the figure as an example), and one or more terminals that communicate with the one or more network devices.
  • the terminals 112 and 114 shown in FIG. 1 communicate with the network device 110 , and there may be more terminals in an actual communication system, including terminals not covered by the network, which are not limited in this application. It can be understood that network devices and terminals can also be referred to as communication devices.
  • a Uu interface can be used for communication between a terminal and a network device.
  • the Uu interface can be understood as a general wireless interface between a terminal and a network device.
  • the communication of the Uu interface includes uplink transmission and downlink transmission.
  • the terminal and the terminal can communicate through the PC5 interface, and the PC5 interface can be understood as an interface for direct communication between the terminal and the terminal through a direct channel.
  • the term sidelink (SL) is usually used to represent the direct communication through the PC5 interface.
  • the PC5 interface supports the resource allocation mode (such as mode 1, mode 1) based on network device scheduling and the resource determination mode (such as mode 2, mode 2) independently selected by the terminal.
  • the resource allocation mode based on network device scheduling is mainly used in direct communication scenarios with network coverage.
  • the network device allocates resources to the terminal according to the buffer status report (BSR) reported by the terminal, and the allocated resources can be sent through dynamic signaling. indication or semi-static signaling indication.
  • BSR buffer status report
  • the resource determination mode independently selected by the terminal may not be limited by network coverage.
  • the resources allocated by the network device or independently selected by the terminal may be used for initial transmission and/or retransmission.
  • the methods and apparatuses provided by the embodiments of the present application may be applicable within the coverage of network equipment, and may also be applicable outside the coverage of network equipment. For example, there may be three coverage scenarios in the communication system shown in FIG.
  • both terminal 112 and terminal 114 are located in the coverage of network device 110; 2) terminal 112 is located in the coverage of network device 110 and terminal 114 is located in the network Outside the coverage of the device 110, there is no Uu link between the terminal 114 and the network device 110 at this time; 3) Both the terminal 112 and the terminal 114 are located outside the coverage of the network device 110, at this time the terminal 112 and the terminal 114 and There is no Uu link between the network devices 110 .
  • the terminal working in mode 1 needs to be within the coverage of the network device, but the terminal working in mode 2 may not be within the coverage of the network device, or it can be within the coverage of the network device.
  • mode 3 the resource allocation mode based on network device scheduling
  • mode 4 mode 4
  • the uplink transmission refers to the terminal sending uplink information to the network device.
  • the uplink information may include, but is not limited to, one or more of uplink data information, uplink control information, and reference signals (reference signals, RS).
  • the channel used to transmit uplink information is called an uplink channel, and the uplink channel can be a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH), etc.
  • the PUSCH is used to carry uplink data, and uplink data may also be referred to as uplink data information.
  • PUCCH is used to carry uplink control information (uplink control information, UCI) fed back by the terminal.
  • the UCI may include but is not limited to channel state information (channel state information, CSI), acknowledgement (acknowledgement, ACK)/negative acknowledgement (negative acknowledgement, NACK), and the like.
  • the downlink transmission refers to the network device sending downlink information to the terminal.
  • the downlink information may include, but is not limited to, one or more of downlink data information, downlink control information, and downlink reference signals.
  • the channel used to transmit downlink information is called a downlink channel, and the downlink channel can be a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH), etc.
  • the PDCCH is used to carry downlink control information (downlink control information, DCI), and the PDSCH is used to carry downlink data, which may also be referred to as downlink data information.
  • the channels on the sidelink include but are not limited to physical layer sidelink shared channel (Physical Sidelink Shared Channel, PSSCH), physical layer sidelink control channel (Physical Sidelink Control Channel, PSCCH), physical layer One or more of a sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH) and a physical layer sidelink discovery channel (Physical Sidelink Discovery Channel, PSDCH).
  • PSSCH Physical Sidelink Shared Channel
  • PSCCH Physical Sidelink Control Channel
  • PSCCH Physical Sidelink Control Channel
  • PSFCH Physical Sidelink Feedback Channel
  • PSDCH Physical Sidelink Discovery Channel
  • the network device may be any device with a wireless transceiver function. Including but not limited to: evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in LTE, base station (gNodeB or gNB) or transceiver point (transmission receiving point/transmission receiving point, TRP) in NR, 3GPP Subsequent evolution of base stations, access nodes in WiFi systems, wireless relay nodes, wireless backhaul nodes, core network equipment, etc.
  • the base station can be: a macro base station, a micro base station, a pico base station, a small base station, a relay station, or a balloon station, etc.
  • the network device may also be a server (eg, a cloud server), a wireless controller, a CU, and/or a DU in a cloud radio access network (cloud radio access network, CRAN) scenario.
  • the network device can also be a server, a wearable device, a machine communication device, a vehicle-mounted device, or a smart screen.
  • the following description takes the network device as the base station as an example.
  • the multiple network devices may be base stations of the same type, or may be base stations of different types.
  • the base station can communicate with the terminal equipment, and can also communicate with the terminal equipment through the relay station.
  • the terminal device can communicate with multiple base stations of different technologies. For example, the terminal device can communicate with the base station supporting the LTE network, the base station supporting the 5G network, and the base station supporting the LTE network and the base station of the 5G network. Dual connection.
  • a terminal is a device or module with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as planes, balloons, satellites, etc.).
  • the terminal may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a VR terminal device, an AR terminal device, an MR terminal device, a terminal in industrial control, a vehicle-mounted terminal device, Terminals in self-driving, terminals in assisted driving, terminals in remote medical, terminals in smart grid, terminals in transportation safety, terminals in smart cities ( Terminals in smart city), terminals in smart home (smart home), etc.
  • the embodiments of the present application do not limit application scenarios.
  • a terminal may also sometimes be referred to as terminal equipment, terminal device, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, machine terminal, UE proxy or UE device, etc.
  • Terminals can be fixed or mobile.
  • the terminal may be a terminal in the Internet of Things (IoT) system.
  • IoT Internet of Things
  • Machine interconnection the intelligent network of the interconnection of things and things.
  • the terminal in this application may be a terminal in machine type communication (MTC).
  • MTC machine type communication
  • the terminal of the present application may be an on-board module, on-board module, on-board component, on-board chip or on-board unit built into the vehicle as one or more components or units, and the vehicle passes through the built-in on-board module, on-board module, on-board component , on-board chip or on-board unit can implement the method of the present application.
  • the embodiments of the present application can be applied to the Internet of Vehicles, such as vehicle to everything (V2X), long term evolution vehicle (LTE-V), vehicle to vehicle (V2V) Wait.
  • the terminal may be a wearable device.
  • Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones.
  • V2X communication includes vehicle Vehicle to Vehicle (V2V), Vehicle to Pedestrian (V2P), Vehicle to Infrastructure (V2I), Vehicle to Network (V2N) )Wait.
  • V2V refers to SL communication between vehicles or in-vehicle devices.
  • the vehicle-mounted terminal can obtain information such as the speed, location, and driving conditions of the surrounding vehicles in real time, and the vehicles can also form an interactive platform to exchange information such as text, pictures, and videos in real time.
  • V2V communication can be applied to avoid or reduce traffic accidents, vehicle supervision and management, etc.
  • V2P refers to the SL communication between vehicles or vehicle-mounted devices and communication devices (such as mobile phones, laptops, etc.) held or carried by pedestrians or cyclists.
  • V2P communication can be applied to avoid or reduce traffic accidents, information services, etc.
  • V2N refers to the connection of in-vehicle equipment to the cloud platform through the access network/core network, the data interaction between the cloud platform and the vehicle, and the storage and processing of the acquired data to provide various application services required by the vehicle.
  • V2N communication can be applied to vehicle navigation, vehicle remote monitoring, emergency rescue, infotainment services, etc.
  • V2I refers to SL communication between vehicles or on-board equipment and roadside infrastructure such as roadside units (RSUs), smart street lights, and traffic cameras. The roadside infrastructure can also obtain information about vehicles in nearby areas and publish various real-time information.
  • V2I communication can be mainly used in real-time information services, vehicle monitoring and management, non-stop charging, etc.
  • the solutions provided by the embodiments of the present application mainly involve the mode in which the terminal selects resources autonomously (for example, mode 2 or mode 4).
  • the terminal selects the sidelink resource pool (sidelink resource pool) in the selection window based on the result of self-listening for sending the sidelink Information resources, the sideline resource pool can be obtained by the terminal through the resource pool configuration information of the network device, it can be predefined by the protocol, or it can be obtained through the pre-configuration information saved by the terminal itself, of which the sideline resource pool can be understood.
  • the terminal continues to listen to all the time slots in the listening window that belong to the SL resource pool except for the time slots that the terminal itself has transmitted.
  • the resources that have been reserved by other terminals are excluded from the selection window, and then the terminal reports the candidate resource set obtained after the exclusion to the higher layers of the terminal.
  • predefined means that a certain value or a certain parameter is defined in a communication protocol, and the content defined in a general communication protocol is stored in the baseband chip.
  • Pre-configured described in this application means that a certain value or a certain parameter is allowed to be configured with different values in the communication protocol, and the specific value can be determined according to each country or industry standard, so the value or this parameter in each country There can be different preconfigured values for /region/industry. The preconfigured values have been preconfigured in the device or device when the device leaves the factory, such as a complete terminal, a communication module, or a baseband chip.
  • the expression [A, B] in this application represents a value range including boundary points A and B
  • the expression (A, B) represents a value range that does not include boundary points A and B at the same time.
  • the expression [A, B) represents the value range that includes the boundary point A and does not include the boundary point B
  • the expression (A, B] represents the value range that does not include the boundary point A and includes the boundary point B. This will not be repeated elsewhere in the text.
  • selection window as the time slot range [n+T 1 , n+T 2 ], n+T 1 is the starting time slot number, n+T 2 is the ending time slot number, where the terminal is at time Slot n triggers resource selection.
  • a candidate resource is embodied as a group of consecutive subchannels with a length equal to L subCH in the frequency domain, and is located in a time slot in the time domain.
  • the L subCH may be the number of sub-channels included in the PSSCH and/or PSCCH for carrying data to be sent by the terminal.
  • the number of candidate resources in each time slot in the selection window is N subCH - L subCH +1.
  • any group in the SL resource pool in the selection window that meets the above conditions that is, a continuous subchannel with a length equal to L subCH in a time slot, is considered as a candidate resource R x,y , and all candidate resources in the selection window are selected.
  • the total is recorded as M total .
  • the maximum number of sub-channels N subCH included in the frequency domain resource pool is 8, which can be understood as the range of a time slot in the SL resource pool.
  • FIG. 3 shows all seven candidate resources formed by sub-channels 0 to 7 on the time slot. It can be understood that all candidate resources in the selection window can be obtained based on the same principle.
  • the listening window can be defined as the time slot range where T 0 is configured by the high-level parameter sl_SensingWindow, Determined by the terminal according to Table 1 below.
  • the ⁇ SL in the table is related to the sub-carrier spacing (SCS) corresponding to the SL bandwidth part (BWP) of the terminal, and the ⁇ SL can be understood as the SCS configuration parameter of the SL BWP. Specifically, the corresponding relationship between the subcarrier spacing SCS and ⁇ SL is shown in Table 2 below.
  • the terminal can determine the parameters according to Table 1 and Table 2 Among them, Table 1 and Table 2 are predefined by the protocol.
  • the terminal needs to monitor (monitor) the timeslots in the listening window except the timeslots that it transmits and belong to the SL resource pool.
  • the monitoring of the timeslots is based on the PSCCH decoding and RSRP measurement on these timeslots, and the PSCCH is carried by other terminals to send sidelink control information (SCI).
  • SCI sidelink control information
  • the threshold Th (prio RX ,prio TX ) as a function of the received priority value indicated by the SCI and the priority value corresponding to the data to be sent by the terminal, wherein the priority value indicated by the SCI can be PSSCH and/or PSCCH the corresponding priority value.
  • the parameter prio RX represents the received priority value indicated in the SCI of other terminals
  • the parameter prio TX represents the priority value corresponding to the data to be sent by the terminal itself. It should be understood that generally in the protocol definition, the higher the priority value, the lower the priority.
  • the terminal should exclude the candidate resource Rx ,y that meets the conditions from the set SA :
  • the terminal does not listen to the time slot For example, the terminal itself is in the time slot the circumstances of the transmission;
  • P' rsvp_TX is a logical value obtained by converting the resource reservation interval P rsvp_TX of the terminal from milliseconds (ms) to logical time slots, which may also be called a logical period, and the resource reservation interval P rsvp_TX may be a parameter indicated by a higher layer.
  • the candidate resource Rx ,y should be excluded from the set SA :
  • the terminal is in the slot An SCI is received, the field "Resource reservation period" in the SCI (if the field “Resource reservation period” is present) indicates the value P rsvp_RX , and the field “Priority” in the SCI indicates the value prio RX , where the value P rsvp_RX is The resource reservation interval of the PSSCH corresponding to the SCI, in milliseconds (ms), and the value prio RX is the priority value of the PSSCH corresponding to the SCI.
  • the terminal is in the slot Time-frequency resources and candidate resources determined by the received SCI Coincidence, or when the field "Resource reservation period" in the SCI is present, the terminal expects Time-frequency resources and candidate resources determined by the SCI received in the time slot coincide.
  • the resource reservation interval P rsvp_TX of the terminal is a logical value obtained by converting the unit of milliseconds (ms) into the unit of logical time slot, and the resource reservation interval (resource reservation interval) is a parameter provided by the upper layer.
  • T scal is the value obtained by converting the selection window length T 2 into milliseconds (ms). It should be understood that converting a value in milliseconds (ms) into a logical time slot represents calculating the number of SL time slots included in the time length corresponding to the value.
  • the time-frequency resource determined by the terminal according to the received SCI is the reserved resource indicated by the SCI, which is located after the sending time slot of the SCI in the time domain.
  • the SCIs sent by terminals 1 to 4 respectively indicate their reserved resources (the reserved resources are marked with the name of the corresponding sending terminal, such as terminal 1), and the reserved resources of terminals 1 to 4 If the resources are located within the selection window, the listening terminal needs to exclude candidate resources that overlap with these reserved resources from the candidate resource set SA .
  • X can be selected from a number of configured values, for example from 20, 35, 50.
  • the listening terminal reports the finally obtained candidate resource set SA to the upper layer of the terminal, and the higher layer then completes the final resource selection from the set SA .
  • the terminal can only listen to the time slots other than its own transmission time slot in the listening window, that is, when the transmitting terminal is sending data, it cannot listen at the same time, that is It is said that the existing interception mechanism cannot solve the problem of low interception reliability caused by terminal half-duplex.
  • the sending terminal cannot listen to These reserved information on the unlistened time slots are then excluded, so the sending terminal may still select the same resources as those reserved by other terminals, resulting in resource collision, reducing transmission reliability and reducing transmission reliability. Increase the interference of the system.
  • the priority information and RSRP measurement values of other terminals on these unlistened time slots cannot be obtained by the terminal, so the terminal cannot correctly identify whether the selected resource is detected during resource preemption detection before transmission. Re-election is required.
  • UE cooperation can be divided into two types of cooperation mechanisms: trigger-based and non-trigger-based.
  • trigger-based cooperation mechanism if the sending terminal needs the cooperation information of the cooperation terminal, the sending terminal must first explicitly send the trigger information to the cooperation terminal, so as to trigger the cooperation terminal to feed back the cooperation information to the sending terminal, as shown in FIG. 5 . Show. At this time, the mechanism of UE cooperation can be actively triggered by the coordinated terminal, that is, the sending terminal.
  • the sending terminal does not need to actively send trigger information to the cooperation terminal, and the cooperation terminal spontaneously feeds back cooperation information to the sending terminal, as shown in FIG. 6 .
  • the collaboration information sent by the collaboration terminal may be triggered by an event (event trigger), or based on some predefined conditions and other manners, which are not limited in this application.
  • event trigger event trigger
  • UE cooperation may also be triggered by the network device through signaling or periodically triggered, etc., which is not limited in this application.
  • terminals can cooperate with each other for various stages of SL communication.
  • the cooperative terminal can assist the sending terminal in resource selection.
  • the sending terminal can also transmit on the sidelink resources under the cooperation of other terminals.
  • the cooperation information from the cooperating terminal may be used to assist the sidelink transmission of the coordinated terminal.
  • the cooperation information may include indication information of sidelink resources that can be used and/or information of sidelink resources that cannot be used. Instructions.
  • the unusable sidelink resources indicated by the collaborative terminal through the collaborative information may be resources that the collaborative terminal detects that have been reserved by other terminals, or resources that the collaborative terminal itself uses to send or receive data.
  • the available sidelink resources indicated in the cooperation information may be determined by the cooperative terminal according to sensing and/or resources used by itself to send or receive data. The remaining resources after the reserved resources.
  • the sending terminal (or referred to as the coordinated terminal) can select resources more effectively by using the above information provided by the cooperating terminal, avoid interference, and improve the throughput of the system.
  • the methods provided in the embodiments of the present application involve resource selection of terminals in mode 2 under the UE cooperation mechanism, which can further improve the performance of mode 2 resource determination. It should be understood that the methods provided in the embodiments of the present application are not limited to the UE cooperation scenarios defined by the 3GPP protocol. Specifically, the embodiment of the present application provides a communication method, which can improve the problem that the sending terminal cannot detect reserved information on these unlistened time slots (for example, the time slots in which the terminal is in the sending state), and reduce the possibility that the sending terminal may choose The probability of reaching resources overlapping with resources reserved by other terminals can increase transmission reliability and thereby reduce system interference.
  • the embodiments of the present application will be described in detail below with reference to the accompanying drawings.
  • FIG. 7 is a schematic diagram of an interaction flow of a communication method 700 provided by an embodiment of the present application.
  • the execution body of the method 700 may be a terminal, a combined device or component with terminal functions, or a communication chip (eg, processor, baseband chip, or system-on-chip, etc.) applied in the terminal.
  • the execution subject of the method may also be a network device, a combined device or component with network device functions, or a communication chip (eg, processor, baseband chip, or system-on-chip, etc.) applied in the network device.
  • a terminal is used as an example for description.
  • method 700 may include parts 710 and 720 .
  • Part 710 The first terminal determines that there is a resource conflict between the first reserved resource and the second reserved resource, wherein the first reserved resource is the reserved resource indicated by the sideline control information from the second terminal, and the first reserved resource is the reserved resource.
  • Two reserved resources belong to at least one reserved resource indicated by sideline control information from one or more other terminals monitored by the first terminal in at least one time unit, and the at least one time unit is the second terminal Unmonitored time unit.
  • Part 720 The first terminal sends conflict indication information, where the conflict indication information is used to indicate a resource conflict on the first reserved resource or the second reserved resource.
  • the first terminal may be a cooperating terminal in the UE cooperation mechanism described above, and the second terminal may be a coordinated terminal.
  • the methods provided by the embodiments of the present application may not be limited to the UE cooperation mechanism, that is to say, the first terminal and the second terminal may not have the relationship between cooperation and cooperation defined in the protocol, and may be any two sides that can perform terminal for communication.
  • time unit described in the embodiments of the present application represents a scheduling unit in the time domain, and may be different time domain units in different communication systems or in different application scenarios.
  • the time unit may be a time slot (slot), A subframe (subframe), a symbol (symbol), or a mini-slot (mini-slot), etc., may also be other time-domain scheduling units, which are not limited in this embodiment of the present application.
  • the first terminal determines that the first reserved resource indicated by the second terminal has a resource conflict with the second reserved resource indicated by other terminals by monitoring at least one time unit that is not monitored by the second terminal, and Sending conflict indication information
  • the communication method provided by the embodiment of the present application can improve the problem that the second terminal cannot detect the reserved information on these unlistened time slots (for example, the time slot in which the second terminal is in the sending state), and reduces the The probability that the reserved resources selected by the second terminal overlap with the resources reserved by other terminals can increase transmission reliability and thereby reduce interference in the system.
  • the second reserved resource belongs to at least one reserved resource indicated by sideline control information SCI from one or more other terminals monitored by the first terminal in at least one time unit, that is, the first terminal
  • the reserved resources of the corresponding terminal are acquired according to the detected SCI from one or more other terminals.
  • the first terminal may also learn the first reserved resource according to the received or detected SCI from the second terminal.
  • the first terminal blindly detects the SCI from other terminals, and the SCI will indicate the time-frequency position and/or the resource reservation period (Resource reservation period) of reserved resources.
  • the time-frequency location of the reserved resources can be indicated by the time-frequency resource assignment fields "frequency resource assignment" and "time resource assignment” in the SCI
  • the resource reservation period can be indicated by the field "resource reservation assignment” in the SCI. period” to indicate.
  • the first terminal determines the first reserved resource according to the information related to the reserved time-frequency resource indicated in the SCI from the second terminal, where the first reserved resource may be periodic or aperiodic.
  • the SCI also generally indicates the transmitting terminal and receiving terminal of the PSSCH, for example, indicating the source identification (S-ID) of the transmitting terminal and the destination identification (D-ID) of the receiving terminal, or indicating the transmitting terminal and the receiving terminal.
  • the receiving terminal indicated in the SCI from the second terminal may or may not be the first terminal.
  • the first terminal may detect the SCI from the second terminal and the SCI from other terminals within the communication range, and the receiving terminal indicated in the above SCI may not be the first terminal, The first terminal learns the first reserved resource and at least one reserved resource of one or more other terminals by decoding the detected SCI.
  • the first terminal may also learn the first reserved resources in other ways, for example, before part 710, the second terminal may send configuration signaling to the first terminal, where the configuration signaling indicates the resources reserved by the second terminal,
  • the reserved resources may be used to send sideline data to other terminals.
  • the configuration signaling may be signaling such as SCI, PC5-RRC signaling, or sidelink Media Access Control control element (SL MAC CE).
  • the first terminal can obtain the reserved resources of the second terminal through configuration signaling, and does not need to detect the SCI sent by the second terminal to other terminals, which can avoid information loss caused by missed detection, etc., so that the accuracy is higher.
  • the second terminal can send configuration signaling to the first terminal before sending the SCI to other terminals, so that the first terminal can know the reserved resources of the second terminal in advance, so that the first terminal has a longer processing time to improve the determination of resources. conflict accuracy.
  • the time unit in which the second terminal is not listening may be one or a combination of the following: a time unit in which the second terminal is in a sending state, a time unit in which the second terminal is in the DRX ON time of discontinuous reception The time unit of the segment, and the non-listening time unit determined by the second terminal in the partial listening mode.
  • the time unit in the sending state of the second terminal includes not only the time unit in which the second terminal sends sideline information, but also the time unit in which the second terminal sends uplink information.
  • the SL terminal does not support full duplex in many cases, that is, simultaneous transmission and reception are performed at the same time, the terminal cannot perform sensing in the time unit in which the terminal is in the transmission state.
  • the terminal In addition to being unable to monitor the time unit in which it is in the sending state, there are also situations in which other terminals are unable to monitor.
  • One of them is the discontinuous reception (DRX) off period (DRX Off Duration) of the terminal.
  • 3GPP introduced DRX technology on the Uu port for power saving. Since the generation of data packets of the terminal is generally not continuous, when there is no data transmission, the power consumption can be reduced by closing the receiving circuit of the terminal, thereby improving the service time of the mobile battery.
  • a DRX cycle includes one or more DRX on time periods (DRX On Duration), all DRX On Durations in a DRX cycle can be collectively referred to as the active time (active time), or each on time period can also be referred to as the active time. Activation time.
  • the time other than the ON period in the DRX cycle is the DRX OFF period.
  • the duration of each DRX On Duration (DRX On Duration) is indicated by the parameter drx-onDurationTimer. All DRX On Durations in a DRX cycle can be continuous or discontinuous in time.
  • the terminal can monitor and receive the PDCCH or PSCCH, and it can also be said that the terminal is in the activation period at this time.
  • the terminal does not receive data on the downlink channel to save power consumption, and it can also be said that the terminal is in a dormant period at this time.
  • the above-mentioned activation time may only include the DRX On Duration period (DRX On Duration), or the activation time may include all configurable time periods that allow the terminal to receive.
  • DRX On Duration DRX On Duration
  • An example of a specific DRX cycle is shown in Figure 8.
  • the terminal is configured with multiple DRX cycles, each DRX cycle includes multiple DRX on time periods, and the time period in the DRX cycle except the DRX on time period is DRX. Closing time period.
  • DRX technology can also be introduced in the future to reduce power consumption, thereby improving the usage time of mobile batteries.
  • the sending terminal After the sending terminal is configured with DRX, it does not receive data from other terminals during the DRX off period (DRX Off Duration), that is, it cannot listen to the SCI from other terminals during the DRX off period.
  • DRX Off Duration DRX Off Duration
  • the time unit in the DRX off period of the terminal also belongs to the time unit in which the terminal does not listen.
  • the terminal has a non-sensing time unit
  • the terminal determines the time unit for which the listening needs to be performed according to the candidate resource set. These time units that need to perform listening only occupy a part of the range of the listening window, and the terminal does not perform listening except for these determined listening time units.
  • the non-listening time unit determined by the terminal in the partial listening mode also belongs to the time unit that the terminal does not listen to.
  • the various non-monitoring time units described in this application are only examples and not limitations, and there may be other reasons that cause the terminal itself to not monitor time units within the listening window, and these situations may occur independently, can also appear at the same time. Similar to the above description, the second terminal cannot detect the reserved information on these unmonitored time slots, and may select resources that overlap with the resources reserved by other terminals, resulting in resource collision, reducing transmission reliability and reducing transmission reliability. Increase the interference of the system.
  • the first terminal may learn the time unit in the sending state of the second terminal, that is, the time unit not monitored by the second terminal, by monitoring sideline information (eg, SCI and/or PSSCH) from the second terminal.
  • sideline information eg, SCI and/or PSSCH
  • the time unit in the sending state of the second terminal includes not only the time unit in which the second terminal sends sideline information, but also the time unit in which the second terminal sends uplink information.
  • the first terminal can obtain the relevant information of the time unit not monitored by the second terminal without additional signaling interaction, which can further reduce the signaling overhead of the system.
  • the first terminal can learn the time unit that is not monitored by the second terminal through configuration signaling from the second terminal, where the configuration signaling can be SCI, PC5-RRC signaling or sidelink media access control layer control unit (sidelink Media). Access Control control element, SL MAC CE) and other signaling.
  • the first terminal does not need to detect the SCI sent by the second terminal to other terminals to learn the information of the time unit that the second terminal does not monitor, which can avoid information loss caused by missed detection, etc., and make the accuracy higher.
  • the second terminal can send configuration signaling to the first terminal before sending the SCI to other terminals, so that the first terminal can know in advance the time unit that the second terminal does not monitor, so that the first terminal has a longer processing time to improve the determination. Accuracy of resource conflicts.
  • the first terminal only monitors (monitors) time units that are not monitored by the second terminal. That is to say, the first terminal only monitors sideline control information from one or more other terminals in at least one time unit that is not monitored by the second terminal, and does not monitor the sideline control information in other time units that are not not monitored by the second terminal. to monitor.
  • the first terminal can obtain the time unit that the second terminal does not monitor through the configuration signaling from the second terminal. Since the first terminal can learn the time units on which the second terminal cannot listen before listening again, the first terminal can only monitor these time units, which can effectively assist the resource determination process of the second terminal and improve transmission reliability. , the power consumption of the first terminal can be reduced, the operation complexity of the first terminal can be reduced, and the overall performance can be improved.
  • the first terminal monitors SCIs from one or more other terminals in at least one time unit that is not monitored by the second terminal, and the at least one reserved resource indicated by these SCIs includes the first reserved resource that has a resource conflict with the first reserved resource.
  • Reserve resources The SCI indicating the second reserved resource (from other terminals) and the SCI indicating the first reserved resource (from the second terminal) may be located in different time units, that is, when determining whether there are other reserved resources and the first reserved resource When a reserved resource conflicts, the first terminal not only considers the time unit in which the SCI indicating the first reserved resource is located.
  • the first terminal needs to monitor time units before time unit k, or within a time range before time unit k, that the second terminal does not monitor. .
  • the first terminal needs to determine whether the reserved resources indicated by the SCI from one or more other terminals on all time units to be monitored related to the time unit k cause a resource conflict. It may be understood that the time unit to be monitored is related to the time unit k, and it can be understood that these time units to be monitored are determined according to the time unit k and/or other parameters.
  • an SL resource pool includes a total of 10 subchannels (subchannels)
  • a time unit in the SL resource pool includes 10 subchannels that can be used for SL transmission, which are exemplarily represented by subchannel numbers 0 to 9 here.
  • the second terminal sends sideline information on subchannels 3 and 4 in time unit n, and the sideline information may include SCI and sideline data, or the sideline information may only include SCI.
  • the SCI sent by the second terminal indicates the first reserved resource in the time unit m, and the specific first reserved resource is located in subchannel 2 .
  • the first terminal detects the SCI sent by the third terminal on sub-channel 1 in the time unit n, and the SCI indicates the second reserved resource of the third terminal, and the second reserved resource is also located in the time unit m. on subchannel 2.
  • the SCI (from the third terminal) indicating the second reserved resource is located in the same time unit n as the SCI (from the second terminal) indicating the first reserved resource.
  • the second terminal sends sideline information on sub-channels 3 and 4 in time unit n, wherein the SCI sent by the second terminal indicates the first reserved resource in time unit m.
  • a reserved resource is located in sub-channel 2.
  • the first terminal detects the SCI sent by the third terminal on subchannel 1 in the time unit n+1, and the SCI indicates the second reserved resource of the third terminal, and the second reserved resource is also located in the time unit m on sub-channel 2 in .
  • the time unit n and the time unit n+1 both belong to the time unit not monitored by the second terminal, and are related to the time unit k where the first terminal sends the conflict indication information.
  • the SCI (from the third terminal) indicating the second reserved resource and the SCI (from the second terminal) indicating the first reserved resource are located in different time units.
  • a sub-channel is a scheduling unit in the frequency domain.
  • the frequency domain unit in this application can also be replaced by a physical resource block (PRB). ), resource block (resource block, RB), resource element (resource element, RE) or control channel element (control channel element, CCE), etc.
  • PRB physical resource block
  • the first terminal determining that the first reserved resource and the second reserved resource have a resource conflict comprising: the first terminal determining that the first reserved resource and the second reserved resource are in conflict.
  • Resources overlap in the time domain.
  • the first terminal determines that the first reserved resource and the second reserved resource overlap in the time domain as a resource conflict between the first reserved resource and the second reserved resource.
  • the reserved resource indicated by the terminal is located in one time unit, that is, the overlap of the first reserved resource and the second reserved resource in the time domain indicates that the first reserved resource and the second reserved resource in the same time unit.
  • the first terminal only determines the resource conflict according to whether there is overlap in the time domain, which can simplify the behavior of the first terminal and reduce the complexity of determining the resource conflict by the first terminal.
  • resource conflicts can be specifically classified into two types: the first type is time-frequency resource overlap, as shown in (1) in FIG. 11 , the resources reserved by the second terminal are time units The resources reserved by the third terminal are subchannels 2 and 3 in the same time unit, and the subchannel 3 of the resources reserved by the two overlaps, that is to say, the second terminal reserves The resources reserved by the third terminal overlap in the time-frequency domain. It should be understood that the overlap in the time-frequency domain may include full overlap and partial overlap.
  • the resources reserved by the second terminal and the resources reserved by the third terminal overlap only on subchannel 3, At this time, the above-mentioned two reserved resources partially overlap in the time-frequency domain.
  • the second type is coexistence of transmission and reception, that is, the first reserved resource and the second reserved resource overlap in the time domain, and the first reserved resource and the second reserved resource are respectively used for the same terminal to transmit sideline information and receive sideline information. information.
  • the SL terminal does not support full duplex, that is to say, the SL does not support simultaneous transmission and reception in one time unit.
  • the two reserved resources are located in the same time unit, although the two resources that may not overlap in the frequency domain will theoretically not cause transmission collision, when the two reserved resources are used for transmission and reception of the same terminal respectively If the terminal does not support full duplex, a communication error will still occur, resulting in at least one transmission failure.
  • the resources reserved by the second terminal are subchannels 3 and 4 in the time unit
  • the resources reserved by the third terminal are subchannel 1 in the time unit. If the subchannels 3 and 4 reserved by the second terminal are used for sending data to the third terminal, it means that the third terminal needs to send data on subchannel 1 and receive data on subchannels 3 and 4 in this time unit.
  • the second terminal needs to send data on the subchannels 3 and 4 and receive data on the subchannel 1 in this time unit.
  • the above two cases belong to the coexistence of sending and receiving on this time unit.
  • the second reserved resource has a resource conflict with the first reserved resource, including: the first reserved resource and the second reserved resource overlap in time and frequency and/or, the first reserved resource and the second reserved resource overlap in the time domain, and the first reserved resource and the second reserved resource are respectively used for the second terminal sending sideline information and receiving sideline information for the second terminal; and/or, the first reserved resource and the second reserved resource overlap in the time domain, and the first reserved resource and the second reserved resources are respectively used for the third terminal to receive sideline information and for the third terminal to send sideline information, wherein the third terminal is the sideline control indicating the second reserved resources Information sending terminal. That is to say, the determination by the first terminal that the second reserved resource has a resource conflict with the first reserved resource may be one of the above three situations, or any combination of the above three situations.
  • whether the first terminal sends the conflict indication information is also based on the RSRP measurement result.
  • the first terminal sends the conflict indication information when the following conditions are met: (1) the first terminal determines that the first reserved resource has a resource conflict with the second reserved resource; (2) the first terminal determines that there is a resource conflict with the third terminal; The RSRP measurement value of the reference signal received power on the link between the two terminals is higher than the first threshold, or the first terminal determines that the RSRP measurement value on the link between the first terminal and the third terminal is higher than RSRP measurements on links between terminals.
  • the method 700 may further include: the first terminal determines that the RSRP measurement value of the reference signal received power on the link between the first terminal and the third terminal is higher than the first threshold; or, the first terminal It is determined that the RSRP measurement value on the link between the first terminal and the third terminal is higher than the RSRP measurement value on the link between the first terminal and the second terminal.
  • the first terminal can more accurately determine whether the resource conflict will affect the transmission of the first terminal. For example, when the measurement result of RSRP is lower than a certain threshold, even if the first reserved resource and the second reserved resource overlap in the time-frequency domain, the transmission of other terminals on the second reserved resource will not affect the second terminal. Serious interference is caused, and at this time, the first terminal does not send conflict indication information to the second terminal or the third terminal even if it is determined that there is a resource conflict. Further increase transmission reliability and avoid unnecessary resource reselection or resource abandonment.
  • the above-mentioned condition (2) may be applied to some scenarios in which resource conflict is determined in a system.
  • the resource conflict type is time-frequency resource overlap
  • the first terminal is a receiving terminal corresponding to the second reserved resource
  • the first terminal sends the conflict indication information when the above conditions (1) and (2) are satisfied.
  • the resource conflict type is overlapping time-frequency resources and the first terminal is not the receiving terminal corresponding to the second reserved resource
  • the first terminal only considers the resource conflict, that is, the first terminal sends the conflict when the condition (1) is satisfied. Instructions.
  • the first terminal when the resource conflict type is coexistence of transmission and reception, the first terminal only considers the time domain overlap, that is, the first terminal sends conflict indication information when it is determined that the first reserved resource and the second reserved resource overlap in the time domain. Because when the first terminal is the receiving terminal corresponding to the second reserved resource, the resource conflict between other terminals and the second terminal will directly interfere with the reception of the first terminal, and at this time, the first terminal can accurately measure the distance between the third terminal and the second terminal.
  • the reference signal received power RSRP on the link of a terminal so the listening result of the first terminal to other terminals can reflect the real interference situation, so in this case, the first terminal can satisfy the above conditions (1) and In the case of (2), the conflict indication information is sent.
  • the first terminal When the first terminal is not the receiving terminal corresponding to the second reserved resource, the first terminal can only measure the RSRP value on the link between the other terminal and the first terminal, and cannot measure the corresponding receiving terminal of the other terminal and the second terminal.
  • the RSRP value on the link between the terminals so the RSRP measurement result of the first terminal cannot accurately reflect the interference on the link between other terminals and the receiving terminal of the second terminal. Therefore, in this case, the first terminal A terminal may only consider resource conflict, that is, the first terminal sends conflict indication information when the condition (1) is satisfied.
  • sending the conflict indication information by the first terminal may include: the first terminal sending the conflict indication information to the second terminal. Or the first terminal sends the conflict indication information to the third terminal, and the third terminal is the sending terminal of the sideline control information SCI indicating the second reserved resource. That is to say, the destination terminal to which the first terminal sends the conflict indication information may be the second terminal or the third terminal.
  • the conflict indication information is used to indicate a resource conflict on the first reserved resource
  • the conflict indication information is used to indicate a resource conflict on the first reserved resource. Used to indicate a resource conflict on the second reserved resource.
  • the conflict indication information indicates a resource conflict between the first reserved resource and the second reserved resource.
  • the first terminal when the priority value corresponding to the first reserved resource is smaller than the priority value corresponding to the second reserved resource, the first terminal sends the conflict indication information to the third terminal.
  • the priority value corresponding to the second reserved resource when the priority value corresponding to the second reserved resource is smaller than the priority value corresponding to the first reserved resource, the first terminal sends the conflict indication information to the second terminal.
  • the priority value corresponding to the first reserved resource may be indicated by sideline control information related to the first reserved resource, and the priority value corresponding to the second reserved resource may be related to the second reserved resource. indicated by the sideline control information.
  • the first terminal determines the destination terminal of the conflict indication information according to the priority corresponding to the reserved resources, and specifically the first terminal sends the conflict indication information to the terminal with the lower priority, so that the terminal with the lower priority can
  • the reserved resources with resource conflict are reselected according to the conflict indication information, or it is determined according to the conflict indication information that the reserved resources with resource conflicts need to be reselected. It can more reasonably solve the situation of resource conflict, ensure the priority transmission of high-priority data, and save wireless signaling.
  • the conflict indication information is used to indicate a resource conflict on the first reserved resource and/or the second reserved resource
  • the specific conflict indication information may be one of the following three indication manners. It should be understood that the following description takes the use of the conflict indication information to indicate a resource conflict on the first reserved resource as an example, which may be replaced by the first reserved resource and/or the second reserved resource in practice.
  • the conflict indication information is used to indicate whether there is a resource conflict in the first reserved resource. That is, the conflict indication information indicates that there is a resource conflict on the first reserved resource, or there is no resource conflict on the first reserved resource.
  • the conflict indication information is carried in a field containing one or more bits, and different values of the field are respectively used to indicate one of the following information: there is a resource conflict in the first reserved resource; There is no resource conflict on the remaining resources.
  • a field in the signaling that includes bearer conflict indication information is used to indicate that there is a resource conflict on the first reserved resource, and a field that does not include the bearer conflict indication information in the signaling is used to indicate that there is no resource conflict on the first reserved resource.
  • the conflict indication information is a field containing 1 bit, the value of the 1 bit being 1 indicates that there is a resource conflict on the first reserved resource, and the value of the 1 bit being 0 indicating that there is no resource conflict on the first reserved resource.
  • the conflict indication information is two predefined or configured sequences, the sending sequence 1 is used to indicate that there is a resource conflict on the first reserved resource, and the sending sequence 2 is used to indicate that there is no resource conflict on the first reserved resource.
  • the indication method of the first method occupies less communication resources and is simple and easy to implement. Another way 1 is that the indication way of two sequences does not need coding and CRC check, and the implementation complexity is low.
  • the conflict indication information is used to indicate that there are one or more sub-channels with resource conflict in the first reserved resource. Assume that the second terminal instructs to reserve sub-channel 4 and sub-channel 5 on time unit m. When the resource conflict is indicated through the first method, the second terminal can only know that the resource conflict occurs on the sub-channels 4 and 5 reserved by itself, but cannot know which sub-channel has overlapping resources. If the second terminal performs resource reselection based on the conflict indication information at this time, and the candidate resource includes two consecutive subchannels as shown in FIG.
  • the second terminal needs to avoid all possible positions with resource conflicts, and also That is to say, the second terminal needs to exclude the following three sub-channel combinations when performing resource reselection: sub-channels 3 and 4, sub-channels 4 and 5, and sub-channels 5 and 6. If only subchannel 4 has overlapping resources, then the candidate resources formed by subchannels 5 and 6 are actually available.
  • the second method can indicate the specific location of the resource conflict, the conflict indication information indicates one or more sub-channels in the first reserved resource with resource conflict, or the conflict indication information indicates one or more sub-channels in the first reserved resource with resource conflict the location of the subchannels. For example, multiple bits or multiple sequences are used to indicate whether there is a conflict on each subchannel of the first reserved resource. When multiple sequences are used, each sequence may correspond to a cyclic offset, and the cyclic offset determines the phase rotation value of the sequence. Rotating a basic sequence according to different phases can finally obtain different sequences.
  • each reserved resource and candidate resource includes two consecutive subchannels
  • the third terminal reserves subchannels 2 and 3 on time unit m (Second reserved resource)
  • the second terminal reserves sub-channels 3 and 4 (first reserved resources) on time unit m
  • resource overlap occurs on sub-channel 3.
  • the conflict indication information may be a field including 2 bits, the first bit is used to indicate whether there is overlap on the subchannel with a smaller number in the first reserved resource, and the second bit is used to indicate the number of the first reserved resource. Whether there is overlap on the larger sub-channel, a bit value of 1 indicates that there is overlap, and a value of 0 indicates that there is no overlap.
  • the conflict indication information may also be 4 sequences, and each sequence corresponds to a cyclic offset. Every 2 sequences is a sequence pair. Each sequence pair indicates resource overlap on one subchannel. For example, the first sequence in the first sequence pair is used to indicate that there is overlap on the subchannel with the smaller number in the first reserved resource, and the other sequence is used to indicate the subchannel with the smaller number in the first reserved resource. There is no overlap.
  • the first sequence in the second sequence pair is used to indicate that there is overlap on the subchannel with the larger number in the first reserved resource
  • the other sequence is used to indicate that there is no overlap on the subchannel with the larger number in the first reserved resource overlapping.
  • the conflict indication information in the above example may also include more than two bits, for example, including some reserved bits and the like.
  • the conflict indication information is used to indicate one or more subchannels with resource conflict in the time slot where the first reserved resource is located.
  • the conflict indication information is used to indicate whether there is resource conflict on each subchannel in the time slot where the first reserved resource is located.
  • multiple bits or multiple groups of sequences are used to indicate whether each subchannel in the time unit where the second reserved resource is located has a conflict.
  • the conflict indication information may be a bitmap including 10 bits, and the value on each bit is used to indicate whether the corresponding numbered subchannel has a resource conflict. .
  • the second terminal reserves sub-channels 3 and 4, and the third terminal reserves sub-channels 2 and 3.
  • the value of the 10 bits of the conflict indication information can be: '0001000000', indicating that resources on subchannel 3 overlap.
  • the value of the 10 bits of the conflict indication information may be: '0011000000', and the receiving terminal may determine, based on the conflict indication information, subchannels occupied by two reserved resources with resource conflict.
  • the first reserved resource includes sub-channels 3 and 4
  • the second reserved resource includes sub-channel 1.
  • the conflict indication information may indicate the first reserved resource.
  • Mode 3 can indicate more detailed resource occupancy, so the receiving terminal can more accurately perform resource reselection or other corresponding operations based on the conflict indication information, preventing re-selection of occupied resources during reselection, and avoiding excessive resource exclusion. waste of resources.
  • the conflict indication information in the third mode may also indicate the reserved resources of other terminals in the reserved time unit. For example, assuming that in the situation shown in FIG. 11(1), the fourth terminal has reserved sub-channels 8 and 9, the bit value of the conflict indication information at this time may be: '0011000011'. Then the receiving terminal can know that sub-channels 2, 3, 4, 8 and 9 have resource conflicts or are occupied, so the receiving terminal (the second terminal or the third terminal) needs to exclude sub-channels 2, 3, 4 when reselection. ,8,9 combination. For example, when the candidate resource size is two consecutive subchannels, the reselection needs to exclude subchannels 1 and 2, subchannels 2 and 3, subchannels 3 and 4, subchannels 4 and 5, subchannels 7 and 8, and Subchannels 8 and 9.
  • the conflict indication information sent by the first terminal adopts the indication manner of the foregoing manner 1.
  • the reselected resource should preferably avoid the time slot where the reserved resource is located, so the conflict indication information may only indicate whether the reserved resource has a resource conflict.
  • part 720 optionally, the conflict indication information directly indicates that the receiving terminal needs to perform resource reselection.
  • part 720 may be replaced with: the first terminal sends conflict indication information, where the conflict indication information is used to indicate that the first reserved resource needs to be reselected or the second reserved resource needs to be reselected.
  • the conflict indication information may indicate a resource conflict type in addition to the resource conflict on the reserved resources.
  • the conflict indication information includes an additional 1 bit to indicate the resource conflict type.
  • the type of resource conflict includes time-frequency overlap and coexistence of transmission and reception (which may also become half-duplex).
  • the second terminal or the third terminal receives the conflict indication information.
  • the method 700 further includes the second terminal or the third terminal reselecting the reserved resources, or discarding the transmission on the reserved resources.
  • the second terminal may reselect the first reserved resource, or the second terminal may abandon transmission on the first reserved resource.
  • the second terminal may perform the following operations: 1) The second terminal reselects the first reserved resource, and is performing the following operations; During resource reselection, the reselection resource needs to avoid overlapping the time domain of the first reserved resource, that is to say, the reselection resource must be located in a different time unit from the first reserved resource; 2) The second terminal is not in the first reserved resource. Send data on a reserved resource and receive data on the first reserved resource; 3) The second terminal gives up receiving data on the first reserved resource and continues to send data on the first reserved resource.
  • the second terminal may perform the following operations: 1) The second terminal reselects the first reserved resource, and the reselected resource must be located in a different time unit from the second reserved resource; 2) The second terminal abandons sending sideline information on the first reserved resource.
  • the second terminal after receiving the conflict indication information, the second terminal also verifies the validity of the conflict indication information according to the RSRP measurement result. For example, if the RSRP measurement value on the link between the second terminal and the first terminal is higher than a threshold, it indicates that the conflict indication information is valid, where the threshold may be predefined or configured by the network device.
  • the second terminal when the second terminal receives the conflict indication information and the conflict indication information is valid, the second terminal can reselect the first reserved resource according to the conflict indication information, or the second terminal discards the first reserved resource. reserved resources, that is, no data is sent on the first reserved resources. Or in this embodiment, when the conflict indication information is valid, the second terminal may not perform reselection or give up.
  • the first reserved resource does not receive sideline data on the second reserved resource.
  • the second terminal may also receive sideline data on the second reserved resource, and reselect the first reserved resource.
  • sending the conflict indication information by the first terminal may include: the first terminal sending the conflict indication information on cooperative resources, where the cooperative resources are determined according to the sending resources of the second terminal, or the cooperative resources are based on the first The reserved resources are determined.
  • the cooperation resource can be understood as a resource used for sending conflict indication information.
  • the first terminal and the second terminal may be a pair of terminals in the UE cooperation mechanism, and the first terminal may be called the second terminal at this time.
  • the second terminal may be referred to as a coordinated terminal.
  • the first terminal may send conflict indication information to the second terminal through the cooperation information, and the resources used for sending the cooperation information may have a corresponding relationship with the first reserved resources, Alternatively, there may be a corresponding relationship between the resources used for sending the cooperation information and the resources bearing the SCI indicating the first reserved resource.
  • the cooperating terminal can determine the resource for sending the conflict indication information, and the coordinated terminal can also determine the resource location of the conflicting indication information that may be sent according to the resource mapping relationship, and then go to the corresponding resource. Blind check on. In this way, the cooperating terminal and the cooperating terminal can directly know the sending position of the possible conflict indication information without the indication of signaling, which improves the efficiency of cooperative communication.
  • the embodiment of the present application provides a mapping manner for collaborative resources, which can be specifically classified into the following two types.
  • the second terminal performs transmission on sub-channels 3 and 4 on time unit n, and the first terminal determines the sub-channel 1 on time slot k according to the transmission resource.
  • the conflict indication information is sent on the t-th RB.
  • the second: backward mapping That is to say, the sending resource of the cooperation information is determined according to the reserved resource of the second terminal (for example, the first reserved resource).
  • the second terminal transmits on sub-channels 3 and 4 on time unit n, and indicates that sub-channels 2 and 3 on time unit m are reserved resources.
  • the first terminal determines, according to the reserved resources of the second terminal, to send the cooperation message on the t-th RB in the subchannel 1 on the time unit k.
  • cooperating terminals and cooperating terminals described in the embodiments of this application are only for the convenience of understanding and description, and do not mean that terminals in a UE cooperating scenario or in a UE cooperating relationship must be named cooperating terminals or cooperating terminals, as long as Any terminal capable of supporting the UE coordination function can be called a cooperating terminal or a coordinated terminal.
  • the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and inherent logic.
  • the various numerical numbers or serial numbers involved in the above processes are only for the convenience of description, and should not constitute any limitation on the implementation process of the embodiments of the present application.
  • FIG. 14 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application.
  • the communication device may be a terminal, a component or component with terminal functions, or a chip (such as a baseband chip) applied in the terminal, and the functions or modules may be implemented by software, or by hardware, or Corresponding software implementation is performed by hardware, and may also be implemented by a combination of software and hardware.
  • the communication device may also be other communication modules, which are used to implement the methods in the method embodiments of the present application.
  • the communication apparatus 1000 may include a transceiver module 1100 and a processing module 1200 .
  • a storage module 1300 may also be included.
  • the processing module and the transceiver module as shown in FIG. 14 may be implemented by one or more processors, or by one or more processors and memories; or by one or more processors and a transceiver; or implemented by one or more processors, a memory, and a transceiver, which is not limited in this embodiment of the present application.
  • the processor, memory, and transceiver can be set independently or integrated.
  • each module in the communication apparatus 1000 in this embodiment of the present application may be used to execute the method 700 described in FIG. 7 in this application and various embodiments and implementations described in this application.
  • the communication apparatus may be applied to the first terminal described in the above method embodiments, or applied to the second terminal or the third terminal described in the above method embodiments.
  • the processing module 1200 is configured to determine that there is a resource conflict between the first reserved resource and the second reserved resource, wherein the first reserved resource is a predetermined resource indicated by the sideline control information from the second terminal.
  • reserved resources the second reserved resources belong to at least one reserved resource indicated by sideline control information from one or more other terminals monitored by the first terminal in at least one time unit, and the at least one time unit is the time unit that is not monitored by the second terminal.
  • the transceiver module 1100 is configured to send conflict indication information, wherein the conflict indication information is used to indicate a resource conflict on the first reserved resource or the second reserved resource.
  • the communication apparatus 1000 determines that the first reserved resource indicated by the second terminal has a resource conflict with the second reserved resource indicated by other terminals by monitoring at least one time unit that is not monitored by the second terminal, and sends conflict indication information, which can improve the second
  • the problem that the terminal cannot listen to the reservation information on these non-listening time slots reduces the overlap between the reserved resources selected by the second terminal and the resources reserved by other terminals. probability, can increase transmission reliability and thus reduce interference in the system.
  • the processing module 1200 in the communication apparatus 1000 may learn the reserved resources of the corresponding terminal according to the SCI detected by the transceiver module 1100 from one or more other terminals. Similarly, the processing module 1200 may also learn the first reserved resource according to the SCI from the second terminal received or detected by the transceiver module 1100 . Generally, the transceiver module 1100 blindly detects the SCI from other terminals, and the SCI will indicate the time-frequency position and/or the resource reservation period (Resource reservation period) of reserved resources. Optionally, the transceiver module 1100 can detect the SCI from the second terminal and the SCI from other terminals within the communication range. The receiving terminal indicated in the above SCI may not be the communication device 1000. The processing module 1200 in the communication device 1000 detects the The SCI performs decoding to learn the first reserved resource and at least one reserved resource of one or more other terminals.
  • the communication apparatus 1000 may also learn the first reserved resources in other ways, for example, the transceiver module 1100 may receive configuration signaling from the second terminal, where the configuration signaling indicates the resources reserved by the second terminal, the preset The reserved resources may be used to send sideline data to other terminals.
  • the configuration signaling may be the configuration signaling, which may be SCI, PC5-RRC signaling, or sidelink Media Access Control control element (SL MAC CE) and other signaling.
  • the above-mentioned time unit that is not monitored by the second terminal may be one or a combination of the following: a time unit in which the second terminal is in a sending state, a time period in which the second terminal is in the discontinuous reception DRX on time period , and the non-monitoring time unit determined by the second terminal in the partial listening mode.
  • the communication apparatus 1000 only monitors (monitors) time units that are not monitored by the second terminal. That is to say, the communication device 1000 only monitors sideline control information from one or more other terminals in at least one time unit that the second terminal does not monitor, and does not monitor the sideline control information from other time units that do not belong to the time unit that the second terminal does not monitor. to monitor.
  • the processing module 1200 is configured to determine that there is a resource conflict between the first reserved resource and the second reserved resource, including: the processing module 1200 is configured to determine the first reserved resource and the second reserved resource. Resources overlap in the time domain. In other words, at this time, the processing module 1200 is configured to determine that the first reserved resource and the second reserved resource overlap in the time domain as a resource conflict between the first reserved resource and the second reserved resource.
  • the reserved resource indicated by the terminal is located in one time unit, that is, the overlap of the first reserved resource and the second reserved resource in the time domain indicates that the first reserved resource and the second reserved resource in the same time unit. If the first reserved resource or the second reserved resource includes more than one time unit, then the time units occupied by the first reserved resource and the second reserved resource are partially or totally the same, which belong to overlapping in the time domain.
  • a resource conflict between the second reserved resource and the first reserved resource includes: the first reserved resource and the second reserved resource overlap in time and frequency; And/or, the first reserved resource and the second reserved resource overlap in the time domain and do not overlap in the frequency domain, and the first reserved resource and the second reserved resource are respectively used for
  • the second terminal sends sideline information and is used for the second terminal to receive sideline information; and/or, the first reserved resource and the second reserved resource overlap in the time domain and in the frequency domain do not overlap, and the first reserved resource and the second reserved resource are respectively used for the third terminal to send sideline information and for the third terminal to receive sideline information, wherein the third terminal is an indication A sending terminal of the sideline control information of the second reserved resource.
  • the processing module 1200 is further configured to determine that the RSRP measurement value of the reference signal received power on the link between the communication apparatus 1000 and the third terminal is higher than the first threshold; or, the processing module 1200 is further configured to determine the communication The RSRP measurement value on the link between the apparatus 1000 and the third terminal is higher than the RSRP measurement value on the link between the communication apparatus 1000 and the second terminal. At this time, it is equivalent to whether the transceiver module 1100 sends the conflict indication information according to the RSRP measurement result.
  • the transceiver module 1100 is configured to send the conflict indication information when the following conditions are met: (1) there is a resource conflict between the first reserved resource and the second reserved resource; (2) the link between the communication device 1000 and the third terminal The RSRP measurement value of the reference signal received power on the road is higher than the first threshold, or the RSRP measurement value on the link between the communication device 1000 and the third terminal is higher than that on the link between the communication device 1000 and the second terminal of RSRP measurements.
  • the above condition (2) may be applied to some scenarios in which resource conflicts are determined in a system.
  • the resource conflict type is time-frequency resource overlap
  • the communication device 1000 is the receiver corresponding to the second reserved resource
  • the transceiver module 1100 is configured to send the conflict when the above conditions (1) and (2) are satisfied.
  • the communication device 1000 only considers the resource conflict, that is, the transceiver module 1100 is used when the condition (1) is satisfied. Send conflict indication information.
  • the communication device 1000 when the resource conflict type is co-existence of transmission and reception, the communication device 1000 only considers the overlap in the time domain, that is, the transmission and reception module 1100 is configured to use when the processing module 1200 determines that the first reserved resource and the second reserved resource overlap in the time domain Send conflict indication information.
  • the transceiver module 1100 is configured to send conflict indication information, which may include: the transceiver module 1100 is configured to send conflict indication information to the second terminal.
  • the transceiver module 1100 is configured to send conflict indication information to a third terminal, where the third terminal is a sending terminal of the sideline control information SCI indicating the second reserved resource. That is to say, the destination terminal to which the transceiver module 1100 sends the conflict indication information may be the second terminal or the third terminal.
  • the transceiver module 1100 is configured to send the conflict indication information to the third terminal .
  • the transceiver module 1100 is configured to send the conflict indication information to the second terminal.
  • the priority value corresponding to the first reserved resource may be indicated by sideline control information related to the first reserved resource, and the priority value corresponding to the second reserved resource may be related to the second reserved resource. indicated by the sideline control information. This is only an example, and the embodiments of the present application do not exclude other ways of obtaining the priority value corresponding to the reserved resource. It should be understood that the higher the general priority value is, the lower the priority is, and the lower the corresponding priority is, the higher the priority is.
  • the conflict indication information is used to indicate whether there is a resource conflict in the first reserved resource. That is, the conflict indication information indicates that there is a resource conflict on the first reserved resource, or there is no resource conflict on the first reserved resource.
  • the conflict indication information is used to indicate one or more subchannels in the first reserved resource with resource conflict.
  • the conflict indication information is used to indicate one or more subchannels with resource conflict in the time slot where the first reserved resource is located.
  • the conflict indication information is used to indicate whether there is resource conflict on each subchannel in the time slot where the first reserved resource is located.
  • the conflict indication information may also include other indication contents, and the specific indication manner is the same as that described in the above method embodiment section, which is not repeated here.
  • the transceiver module 1100 is configured to send the conflict indication information, which may include: the transceiver module 1100 is configured to send the conflict indication information on cooperative resources, where the cooperative resources are determined according to the sending resources of the second terminal, or The cooperative resource is determined according to the first reserved resource.
  • the cooperation resource may be understood as a resource used for sending conflict indication information.
  • the communication apparatus 1000 and the second terminal may be a pair of terminals in a UE cooperation mechanism.
  • the mapping manner of the cooperative resources is the same as that described in the above method embodiment section, and details are not repeated here.
  • sending the conflict indication information by the first terminal may include: the first terminal sending the conflict indication information on cooperative resources, where the cooperative resources are determined according to the sending resources of the second terminal, or the cooperative resources are based on the first The reserved resources are determined.
  • the cooperation resource can be understood as a resource used for sending conflict indication information.
  • the first terminal and the second terminal may be a pair of terminals in the UE cooperation mechanism, and the first terminal may be called the second terminal at this time.
  • the second terminal may be referred to as a coordinated terminal.
  • the communication apparatus 1000 may also be applied to the second terminal or the third terminal described in the foregoing method embodiments, and the following description takes the application to the second terminal as an example.
  • the transceiver module 1100 is configured to receive conflict indication information from the first terminal, wherein the conflict indication information is used to indicate a resource conflict on the first reserved resource or the second reserved resource, the first A reserved resource is a reserved resource of the communication device 1000, and the second reserved resource belongs to at least one indicated by the sideline control information from one or more other terminals monitored by the first terminal in at least one time unit Reserving resources, the at least one time unit is a time unit that is not monitored by the second terminal.
  • the processing module 1200 is configured to reselect the first reserved resource, or the processing module 1200 is configured to discard the first reserved resource, and discarding the first reserved resource can be understood as not sending data on the second reserved resource.
  • the processing module 1200 may not be used for reselection or abandoning the first reserved resource.
  • the first reserved resource may be reserved, and the processing module 1200 Used to not receive sideline data on the second reserved resource.
  • the processing module 1200 determines, according to the conflict indication information, that the resource conflict is coexistence of transmission and reception, the processing module 1200 is configured to receive sideline data on the second reserved resource, and the processing module 1200 is configured to reselect the first reserved resource .
  • the transceiver module 1100 may correspond to the transceiver 2100 in the terminal 2000 shown in FIG. 16
  • the processing module 1200 may correspond to the baseband in the terminal 2000 shown in FIG. 16
  • the processor 2400 and the storage module 1300 may correspond to the memory 2300 in the terminal 2000 shown in FIG. 16
  • the communication device 1000 is a communication chip applied in a terminal
  • the communication device 1000 may correspond to the baseband processor 2400 (or referred to as a baseband chip) shown in FIG. 16
  • the transceiver module 1100 may be an input/output interface at this time.
  • the module 1200 may include one or more CPU processors, digital signal processors, etc. in the baseband chip
  • the storage module 1300 may be a memory inside the baseband chip or a memory outside the baseband chip.
  • FIG. 15 is a schematic structural diagram of a processing apparatus 1200 provided by an embodiment of the present application.
  • the processing apparatus 1200 includes a processing module 1202 and an interface module 1201 .
  • the processing module may further include a storage module 1203 .
  • the processing module 1202, the interface module 1201 and the storage module 1203 are coupled or connected to each other, and can transmit control and/or data signals to each other.
  • the storage module 1203 is used to store computer programs, and the processing module 1202 is used to retrieve the The computer program is called and executed in the storage module 1203 to implement the above-mentioned method 500, 600 or 700.
  • the processing device 1200 shown in the figures is merely an example.
  • the storage module 1203 may also be integrated in the processing module 1202, or be independent of the processing module 1202. This application does not limit this.
  • FIG. 16 is a schematic structural diagram of a terminal 2000 provided by an embodiment of the present application.
  • the terminal can execute the method provided by the embodiment of the present invention.
  • the terminal 2000 includes a transceiver 2100 , an application processor 2200 , a memory 2300 and a baseband processor 2400 .
  • the transceiver 2100 may condition (eg, analog convert, filter, amplify, and upconvert, etc.) the output samples and generate an uplink signal that is transmitted via the antenna to the base station described in the above embodiments.
  • the antenna receives downlink signals transmitted by the access network equipment.
  • the transceiver 2100 may condition (eg, filter, amplify, downconvert, and digitize, etc.) the signal received from the antenna and provide input samples.
  • the specific transceiver 2100 may be implemented by a radio frequency chip.
  • the baseband processor 2400 processes the digitized received signal to extract the information or data bits conveyed in the signal.
  • the baseband processor 2400 may include an encoder, a modulator, a decoder, and a demodulator.
  • the encoder is used to encode the signal to be transmitted.
  • an encoder may be used to receive and process (eg, format, encode, or interleave, etc.) traffic data and/or signaling messages to be sent on the uplink.
  • the modulator is used to modulate the output signal of the encoder.
  • the modulator may perform processing such as symbol mapping and/or modulation on the output signal (data and/or signaling) of the encoder, and provide output samples.
  • the demodulator is used to demodulate the input signal.
  • the demodulator processes the input samples and provides symbol estimates.
  • the decoder is used to decode the demodulated input signal.
  • the decoder de-interleaves and/or decodes the demodulated input signal, and outputs the decoded signal (data and/or signaling).
  • the encoder, modulator, demodulator and decoder may be implemented by a composite modem processor. These units are processed according to the radio access technology adopted by the radio access network.
  • the baseband processor 2400 may include memory.
  • Baseband processor 2400 may receive digitized data, which may represent voice, data, or control information, from application processor 2200 and process the digitized data for transmission.
  • the modem processor to which it belongs can support one or more of multiple wireless communication protocols of multiple communication systems, such as LTE, NR, Universal Mobile Telecommunications System (UMTS), high-speed packet access (High Speed Packet Access, HSPA) and more.
  • the baseband processor 2400 may also include one or more memories.
  • the baseband processor 2400 and the application processor 2200 may be integrated in one processor chip.
  • the memory 2300 is used to store program codes (sometimes also referred to as programs, instructions, software, etc.) and/or data for supporting the communication of the terminal device.
  • program codes sometimes also referred to as programs, instructions, software, etc.
  • the memory 2300 or the memory in the baseband processor 2400 may include one or more storage units, for example, may be a storage unit inside the baseband processor 2400 or the application processor 2200, or may be related to the application processor 2200 or the baseband processor 2400 is an independent external storage unit, or may also be a component including a storage unit inside the application processor 2200 or the baseband processor 2400 and an external storage unit independent of the application processor 2200 or the baseband processor 2400.
  • the baseband processor 2400 may include a central processing unit (Central Processing Unit, CPU), a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application-Specific Integrated Circuit, ASIC), field programmable gates Field Programmable Gate Array (FPGA) or other programmable logic devices, transistor logic devices, hardware components, other integrated circuits, or any combination thereof.
  • the baseband processor 2400 may implement or execute various exemplary logical blocks, modules and circuits described in connection with the disclosure of the embodiments of the present invention.
  • the baseband processor 2400 may also be a combination of devices implementing computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, or a system-on-a-chip (SOC) and the like.
  • a combination of one or more microprocessors such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, or a system-on-a-chip (SOC) and the like.
  • SOC system-on-a-chip
  • the terminal 2000 shown in FIG. 16 can implement each process in the foregoing method embodiments.
  • the operations or functions of each module in the terminal 2000 are respectively to implement the corresponding processes in the foregoing method embodiments.
  • Embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the method provided by the foregoing method embodiment can be implemented.
  • the embodiment of the present application further provides a computer program product including an instruction, when the instruction is executed, the method on the terminal side in the foregoing method embodiment is executed.
  • processors mentioned in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), application-specific integrated circuits ( application specific integrated circuit, ASIC), off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory
  • Volatile memory can be random access memory
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • ESDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components
  • the memory storage module
  • memory described herein is intended to include, but not be limited to, these and any other suitable types of memory.
  • the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

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Abstract

本申请实施例提供了一种通信方法及装置，可以应用于直连通信，例如D2D、V2X、智能驾驶和智能网联车等领域。该方法中第一终端确定第一预留资源和第二预留资源有资源冲突，并发送用于指示该第一预留资源或该第二预留资源上的资源冲突的冲突指示信息，其中，该第一预留资源为来自第二终端的侧行控制信息指示的预留资源，该第二预留资源属于该第一终端在至少一个时隙上监听的来自一个或多个其他终端的侧行控制信息指示的至少一个预留资源，该至少一个时隙为该第二终端未监听的时隙。

Description

通信方法及装置 技术领域
本申请涉及通信领域，并且更具体地，涉及一种通信方法及装置。
背景技术
随着无线通信技术的发展，人们对高数据速率和用户体验的需求日益增长，同时人们对了解周边人或事物并与之通信的邻近服务的需求逐渐增加，因此设备到设备(device-to-device，D2D)技术应运而生。D2D技术可以减轻蜂窝网络的负担、减少用户设备的电池功耗、提高数据速率，并能很好地满足邻近服务的需求。D2D技术允许多个支持D2D功能的终端在有网络基础设施或无网络基础设施的情况下进行直接发现(direct discovery)和直接通信(direct communication)。随后，基于D2D技术的车联网应用场景被提出，车联网场景下的直接通信对时延的要求非常高，已有的D2D技术无法实现。
在第三代合作伙伴计划(The 3rd Generation Partnership Project，3GPP)提出的长期演进(long term evolution，LTE)技术的网络下，车与任何事物通信(vehicle-to-everything，V2X)的车联网技术被提出，V2X通信是指车辆与外界的任何事物的通信，包括车与车的通信(vehicle to vehicle，V2V)、车与行人的通信(vehicle to pedestrian，V2P)、车与基础设施的通信(vehicle to infrastructure，V2I)以及车与网络的通信(vehicle to network，V2N)等。LTE V2X解决了V2X场景中的一些部分基础性的需求，但对于未来的完全智能驾驶、自动驾驶等应用场景而言，已有的LTE V2X还不能有效的支持。随着第五代新无线(5th generation new radio，5G NR)技术在3GPP标准组织中的开发，5G NR V2X也将进一步发展，比如可以支持更低的传输时延，更可靠的通信传输，更高的吞吐量，更好的用户体验，以满足更加广泛的应用场景需求。
直连通信可以支持有网络覆盖和无网络覆盖的通信场景，其资源分配方式可以采取网络接入设备调度模式，如演进通用陆地无线接入网节点B(E-UTRAN Node B，eNB)调度模式和终端自选模式。在终端自选模式中，发送终端基于对一段时间窗内的资源的侦听(sensing)自主选择用于侧行信息发送的资源。已有的资源侦听机制能够一定程度上避免资源冲突，资源冲突例如可以是发送终端选择的资源与其他终端占用或预留的资源有重叠，但是仍然不能满足未来直连通信中对更高的通信可靠性的要求。
发明内容
本申请提供一种通信方法，能够提高通信可靠性。
第一方面，提供了一种通信方法，该方法的执行主体可以是终端，也可以是具备终端功能的组合器件或部件，也可以是应用于终端中的通信芯片(例如处理器、基带 芯片、或芯片系统等)。下面以执行主体是终端为例进行描述。该方法包括：第一终端确定第一预留资源和第二预留资源有资源冲突，其中，所述第一预留资源为来自第二终端的侧行控制信息指示的预留资源，所述第二预留资源属于所述第一终端在至少一个时间单元上监听的来自一个或多个其他终端的侧行控制信息指示的至少一个预留资源，所述至少一个时间单元为所述第二终端未监听的时间单元。所述第一终端发送冲突指示信息，其中，所述冲突指示信息用于指示所述第一预留资源和/或所述第二预留资源上的资源冲突。
示例性的，所述第二终端未监听的时间单元包括以下中的一种或多种的组合：所述第二终端处于发送状态的时间单元、处于所述第二终端的不连续接收DRX开启时间段的时间单元，和，所述第二终端在部分感知模式确定的非监听时间单元。
需要说明的是，时间单元表示时域上的调度单元，在不同通信系统中或不同应用场景下可以是不同的时域单位，例如时间单元可以是时隙(slot)、子帧(subframe)、符号(symbol)或迷你时隙(mini-slot)等，还可以是其他时域调度单元，本申请对此不做限定。
根据第一方面提供的方法，可以改善第二终端无法侦听到这些未侦听时间单元(例如终端处于发送状态的时间单元)上的预留信息的问题，减少发送终端可能选择到与其他终端预留的资源重叠的资源的概率，可以增加传输可靠性进而降低系统的干扰。
第二方面，提供了一种通信方法，该方法的执行主体可以是终端，也可以是具备终端功能的组合器件或部件，也可以是应用于终端中的通信芯片(例如处理器、基带芯片、或芯片系统等)。下面以执行主体是终端为例进行描述。该方法包括：第二终端接收来自第一终端的冲突指示信息，所述冲突指示信息用于指示第一预留资源或第二预留资源上的资源冲突，其中，所述第一预留资源与所述第二预留资源有资源冲突，所述第一预留资源为所述第二终端发送的侧行控制信息指示的预留资源，所述第二预留资源属于所述第二终端未监听的至少一个时间单元上来自一个或多个其他终端的侧行控制信息指示的至少一个预留资源。所述第二终端重选所述第一预留资源，或丢弃(drop)所述第一预留资源。
根据本申请提供的方法，可以改善第二终端无法侦听到这些未侦听时间单元(例如终端处于发送状态的时间单元)上的预留信息的问题，减少发送终端可能选择到与其他终端预留的资源重叠的资源的概率，可以增加传输可靠性进而降低系统的干扰。
具体地，第一终端在确定资源冲突时，可以仅根据第二终端未监听的那些时间单元上监听的信息，例如第二终端未监听的那些时间单元上来自其他终端的SCI，而不考虑其他第二终端已监听或可监听的时间单元上的信息，可以降低监听的重复度，降低第一终端的处理复杂度，保证正确率的同时提高效率。
可选的，第一终端通过来自第二终端的配置信令获知第二终端未监听的至少一个时间单元。并且第二终端可以在向其他终端发送SCI之前向第一终端发送配置信令，这样第一终端可以提前获知第二终端的未监听的时间单元，使得第一终端有更长的处理时间以提高确定资源冲突的准确性。
结合第一方面或第二方面，在某些实现方式中，所述第二预留资源与所述第一预留资源有资源冲突，包括：所述第一预留资源与所述第二预留资源有时频重叠；和/ 或，所述第一预留资源与所述第二预留资源在时域上重叠，且所述第一预留资源和所述第二预留资源分别用于所述第二终端发送侧行信息和用于所述第二终端接收侧行信息；和/或，所述第一预留资源与所述第二预留资源在时域上重叠，且所述第一预留资源和所述第二预留资源分别用于第三终端接收侧行信息和用于所述第三终端发送侧行信息，其中所述第三终端为指示所述第二预留资源的侧行控制信息的发送终端。该种实现方式中，第一终端可以更加准确的判断资源冲突是否会对第一终端的传输造成影响。例如当RSRP的测量结果低于一定门限时，即使第一预留资源和第二预留资源在时频域上发生重叠，其他终端在第二预留资源上的传输也不会对第二终端造成严重干扰，此时在确定有资源冲突的情况下第一终端也不向第二终端或第三终端发送冲突指示信息。进一步增加传输可靠性，避免不必要的资源重选或资源放弃。
结合第一方面或第二方面，在某些实现方式中，所述第二预留资源与所述第一预留资源有资源冲突，为所述第一预留资源与所述第二预留资源在时域上重叠。该种实现方式中，第一终端仅根据时域上是否有重叠来确定资源冲突，可以简化第一终端的行为，第一终端无需根据第二终端或者其他终端的其他信息，可以减小第一终端确定资源冲突的复杂度。
应理解，第一预留资源和第二预留资源占用的时间单元部分相同或全部相同都属于在时域上有重叠。同理的，时频资源上有重叠包括时频资源部分相同或全部相同。
结合第一方面，在第一方面的某些实现方式中，所述第一终端发送冲突指示信息，包括：所述第一终端向所述第二终端发送所述冲突指示信息；或，所述第一终端向第三终端发送所述冲突指示信息，所述第三终端为指示所述第二预留资源的侧行控制信息的发送终端。
结合第一方面，在第一方面的某些实现方式中，所述第一终端发送冲突指示信息，包括：在所述第一预留资源对应的优先级值小于所述第二预留资源对应的优先级值的情况下，所述第一终端向第三终端发送所述冲突指示信息，所述第三终端为指示所述第二预留资源的侧行控制信息的发送终端；和/或，在所述第二预留资源对应的优先级值小于所述第一预留资源对应的优先级值的情况下，所述第一终端向所述第二终端发送所述冲突指示信息。该种实现方式能够更加合理地解决资源冲突的情况，保障高优先级的数据优先传输，并节约无线信令。
示例的，所述第一预留资源对应的优先级值是由所述第一预留资源相关的侧行控制信息指示的，所述第二预留资源对应的优先级值是由所述第二预留资源相关的侧行控制信息指示的。
结合第一方面，在第一方面的某些实现方式中，所述第一终端发送冲突指示信息之前，所述方法还包括：所述第一终端确定与第三终端之间的链路上的参考信号接收功率RSRP测量值高于第一门限；或，所述第一终端确定所述第一终端与第三终端之间的链路上的RSRP测量值高于所述第一终端与所述第二终端之间的链路上的RSRP测量值。进一步增加传输可靠性，避免不必要的资源重选或资源放弃。
结合第二方面，在第二方面的某些实现方式中，所述第二终端重选或丢弃所述第一预留资源之前，所述方法还包括：所述第二终端确定所述第二终端与所述第一终端之间链路上的RSRP测量值高与第二门限。此时相当于第二终端基于RSRP测量值验 证冲突指示信息的有效性，进一步增加资源确定的可靠性。
结合第一方面或第二方面，在某些实现方式中，所述冲突指示信息承载于包含一个或多个比特的字段，所述字段的不同取值分别用于指示以下信息中的一种：所述第一预留资源存在资源冲突，以及所述第一预留资源上不存在资源冲突。该指示方式占用通信资源少，且实现复杂度低。
结合第一方面或第二方面，在某些实现方式中，所述冲突指示信息用于指示所述第一预留资源或所述第二预留资源上的资源冲突，包括：所述冲突指示信息用于指示所述第一预留资源中存在资源冲突的一个或多个子信道。该种实现方式可以更加精细得指示预留资源上资源冲突的具体位置，当终端基于冲突指示信息进行重选或其他相应操作时能够避免过度的资源排除，从而避免资源浪费。
结合第一方面或第二方面，在某些实现方式中，所述冲突指示信息用于指示所述第一预留资源或所述第二预留资源上的资源冲突，包括：所述冲突指示信息用于指示所述第一预留资源所在的时间单元中存在资源冲突的一个或多个子信道。该种实现方式可以指示更加详细的资源占用情况，因此接收终端可以基于冲突指示信息更加准确的进行资源重选或其他相应操作，防止重选时再度选择已经被占用的资源，同时避免过度的资源排除导致的资源浪费。
结合第一方面，在某些实现方式中，所述第一终端发送冲突指示信息，包括：所述第一终端在协作资源上发送所述冲突指示信息，所述协作资源为根据所述第二终端的发送资源确定的，或所述协作资源为根据所述第一预留资源确定的。在本申请提供的方法应用于UE协作场景时，第一终端可以通过协作信息向第二终端发送冲突指示信息，并且用于发送协作信息的资源可以和第一预留资源之间有对应关系，或者用于发送协作信息的资源可以和承载指示第一预留资源的SCI的资源之间有对应关系。通过资源之间的对应关系或映射关系，协作终端可以确定发送冲突指示信息的资源，并且被协作终端也可以根据资源的映射关系确定出可能发送的冲突指示信息的资源位置，进而去相应的资源上进行盲检。这样协作终端和被协作终端之间能够不通过信令的指示而直接获知可能出现的冲突指示信息的发送位置，提高了协作通信的效率。
第三方面，提供了一种通信装置，所述通信装置具有实现上述第一方面的方法的功能，有益效果可以参见第一方面的描述此处不再赘述。该通信装置包括用于执行上述方法的相应的模块或部件。该装置包括的模块可以通过软件和/或硬件方式实现。在一个可能的设计中，所述通信装置包括：收发模块和处理模块，可以实现上述第一方面、或第一方面任一种可能的实施方式中的方法，具体参见方法示例中的详细描述，此处不做赘述。
第四方面，提供了一种通信装置，所述通信装置具有实现上述第二方面的方法的功能，有益效果可以参见第二方面的描述此处不再赘述。该通信装置包括用于执行上述方法的相应的模块或部件。该装置包括的模块可以通过软件和/或硬件方式实现。在一个可能的设计中，所述通信装置包括：收发模块和处理模块，可以实现上述第二方面、或第二方面任一种可能的实施方式中的方法，具体参见方法示例中的详细描述，此处不做赘述。
上述第三方面或第四方面中的通信装置可以是终端，也可以是应用于终端中的芯 片或者其他可实现上述终端功能的组合器件、部件等。当通信装置是终端设备时收发模块可以是发送器和接收器，或整合的收发器，可以包括天线和射频电路等，处理模块可以是处理器，例如基带芯片等。当通信装置是具有上述终端功能的部件时，收发模块可以是射频单元，处理模块可以是处理器。当通信装置是应用于终端中的芯片系统时，收发模块可以是芯片系统的输入输出接口，处理模块可以是芯片系统中的处理器，例如：中央处理单元(central processing unit，CPU)。
第五方面，提供了一种通信装置，包括一个或多个处理器，该一个或多个处理器与存储器耦合，可用于执行存储器中的程序或指令，以使得该装置实现上述任一方面中或该方面中任一种可能实施方式中的方法。可选地，该装置还包括一个或多个存储器。可选地，该装置还包括通信接口，处理器与通信接口耦合。
第六方面，提供了一种处理装置，该处理装置包括处理模块和接口模块，例如，应用于上述的通信装置中，用于实现上述任一方面中所涉及的功能或方法，该处理装置例如可以是芯片系统。在一种可行的实现方式中，所述芯片系统还包括存储器，所述存储器，用于保存实现上述第一方面所述方法的功能必要的程序指令和数据。
上述方面中的芯片系统可以是片上系统(system on chip，SOC)，也可以是基带芯片等，其中基带芯片可以包括处理器、信道编码器、数字信号处理器、调制解调器和接口模块等。
在具体实现过程中，输入接口所接收的输入的信号可以是由例如但不限于接收器接收并输入的，输出接口所输出的信号可以是例如但不限于输出给发射器并由发射器发射的，且输入接口和输出接口可以是整合的同一接口，该接口在不同的时刻分别用作输入接口和输出接口。本申请实施例对处理器及各种接口的具体实现方式不做限定。
上述的存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(read only memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
第七方面，本申请提供了一种通信系统，包括上述第三方面提供的通信装置和上述第四方面提供的通信装置。
第八方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序被运行时，实现上述任一方面或该方面中任一种可能实现方式中的方法。
第九方面，提供了一种计算机程序产品，该计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当该计算机程序被运行时，使得计算机执行上述任一方面或该方面中任一种可能实现方式中的方法。
附图说明
图1示出了一种通信系统结构示例图；
图2示出了一种V2X通信场景的示意图；
图3示出了一个时隙上的候选资源的示例图；
图4示出了一种侦听窗口以及选择窗口的示例图；
图5示出了一种基于触发的UE协作机制的示意图；
图6示出了一种费触发的UE协作机制的示意图；
图7示出了一种本申请提供的一种通信方法的交互流程示意图；
图8示出了一种DRX周期的示意图；
图9示出了一种根据本申请实施例的方法确定资源冲突的示例图；
图10示出了另一种根据本申请实施例的方法确定资源冲突的示例图；
图11示出了一种本申请实施例中的资源冲突的具体示例图；
图12示出了一种协作资源的映射方式的示意图；
图13示出了另一种协作资源的映射方式的示意图；
图14示出了本申请实施例提供的通信装置的结构示意图；
图15示出了本申请实施例提供的处理装置的结构示意图；
图16示出了本申请实施例提供的终端设备的结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例提供的方法及装置可以应用于各种通信系统，例如：长期演进(long term evolution，LTE)系统、第五代(5th generation，5G)系统、新无线(new radio，NR)或未来可能出现的其他通信系统等。示例性的，本申请实施例提供的方法及装置可以具体应用于各种现存或未来的通信系统中的终端到终端直接通信(direct communication)的通信场景下，例如设备到设备(device-to-device，D2D)通信场景，车与任何事物(vehicle-to-everything，V2X)通信场景以及智慧网联车等通信场景。另外也可以应用于网络设备与网络设备之间回程链路传输的通信场景等，本申请不做限定。
如图1示出了一种通信系统结构示意图。该通信系统中可以包括一个或多个网络设备(图中仅示出网络设备110作为示例)，以及与该一个或多个网络设备通信的一个或多个终端。图1中所示终端112和终端114与网络设备110通信，实际通信系统中还可以有更多终端，包括非网络覆盖内的终端等，本申请对此不做限定。可以理解的是，网络设备和终端也可以被称为通信设备。终端和网络设备之间可以通过Uu接口进行通信，Uu接口可以理解为通用的终端和网络设备之间的无线接口，Uu接口的通信包括上行传输和下行传输。终端和终端之间可以通过PC5接口进行通信，PC5接口可以理解为终端和终端之间通过直连信道(direct channel)进行直连通信(direct communication)的接口。在(3rd Generation Partnership Project，3GPP)无线接入网(radio access network，RAN)协议中通常用术语侧行链路(sidelink，SL)来表示通过PC5接口的直连通信。目前PC5接口的概念已经被扩大到满足各种市场需求的通信场景，例如包括可穿戴设备或智能家电的通信场景等。PC5接口支持基于网络设备调度的资源分配模式(例如模式1，mode 1)和终端自主选择的资源确定模式(例如模式2，mode 2)。基于网络设备调度的资源分配模式主要应用于有网络覆盖的直连通信场景，网络设备根据终端上报的缓冲区状态报告(buffer status report，BSR)为终端分配资源，分配的资源可以通过动态信令指示或半静态信令指示。终端自主选择的资源确定模式 可以不受限于网络覆盖。网络设备分配的或终端自主选择的资源可以用于初传和/或重传。本申请实施例提供的方法及装置可以适用于网络设备覆盖范围内，也可以适用于网络设备覆盖外。例如图1示出的通信系统中可能有3种覆盖场景：1)终端112和终端114均位于网络设备110的覆盖范围内；2)终端112位于网络设备110的覆盖范围内且终端114位于网络设备110的覆盖范围之外，此时终端114与网络设备110之间不存在Uu链路；3)终端112和终端114均位于网络设备110的覆盖范围之外，此时终端112和终端114与网络设备110之间均不存在Uu链路。工作在mode 1的终端需要在网络设备的覆盖范围内，但工作在mode 2的终端可以不在网络设备的覆盖范围内，也可以在网络设备的覆盖范围内。在LTE相关协议中基于网络设备调度的资源分配模式也被称为模式3(mode 3)，终端自主选择的资源确定模式也被称为模式4(mode 4)。
示例的，上行传输指终端向网络设备发送上行信息。其中，上行信息可包括且不限于上行数据信息、上行控制信息、参考信号(reference signal，RS)中的一个或多个。用于传输上行信息的信道称为上行信道，上行信道可以为物理上行共享信道(physical uplink shared channel，PUSCH)或物理上行控制信道(physical uplink control channel，PUCCH)等。PUSCH用于承载上行数据，上行数据也可以称为上行数据信息。PUCCH用于承载终端反馈的上行控制信息(uplink control information，UCI)。UCI中可以包括且不限于信道状态信息(channel state information，CSI)、肯定应答(acknowledgement，ACK)/否定应答(negative acknowledgement，NACK)等。
示例的，下行传输指网络设备向终端发送下行信息。下行信息可以包括且不限于下行数据信息、下行控制信息和下行参考信号中的一个或多个。用于传输下行信息的信道称为下行信道，下行信道可以为物理下行共享信道(physical downlink shared channel，PDSCH)或物理下行控制信道(physical downlink control channel，PDCCH)等。所述PDCCH用于承载下行控制信息(downlink control information，DCI)，PDSCH用于承载下行数据，下行数据也可称为下行数据信息。
示例的，侧行链路上的信道包括且不限于物理层侧行链路共享信道(Physical Sidelink Shared Channel，PSSCH)、物理层侧行链路控制信道(Physical Sidelink Control Channel，PSCCH)、物理层侧行链路反馈信道(Physical Sidelink Feedback Channel，PSFCH)和物理层侧行链路发现信道(Physical Sidelink Discovery Channel，PSDCH)中的一个或多个。
本申请中，网络设备可以是任意一种具有无线收发功能的设备。包括但不限于：LTE中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，NR中的基站(gNodeB或gNB)或收发点(transmission receiving point/transmission reception point,TRP)，3GPP后续演进的基站，WiFi系统中的接入节点，无线中继节点，无线回传节点，核心网设备等。基站可以是：宏基站，微基站，微微基站，小站，中继站，或，气球站等。多个基站可以支持上述提及的同一种技术的网络，也可以支持上述提及的不同技术的网络。网络设备还可以是服务器(例如云服务器)、云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器、CU，和/或，DU。网络设备还可以是服务器，可穿戴设备，机器通信设备、车载设备、或智慧屏幕等。以下以网络设备为基站为例进行说明。所述多个网络设备可以为同一类型的基站，也可以为不同类 型的基站。基站可以与终端设备进行通信，也可以通过中继站与终端设备进行通信。终端设备可以与不同技术的多个基站进行通信，例如，终端设备可以与支持LTE网络的基站通信，也可以与支持5G网络的基站通信，还可以支持与LTE网络的基站以及5G网络的基站的双连接。
终端是一种具有无线收发功能的设备或模组，可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。所述终端可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、VR终端设备、AR终端设备、MR终端设备、工业控制(industrial control)中的终端、车载终端设备、无人驾驶(self driving)中的终端、辅助驾驶中的终端、远程医疗(remote medical)中的终端、智能电网(smart grid)中的终端、运输安全(transportation safety)中的终端、智慧城市(smart city)中的终端、智慧家庭(smart home)中的终端等等。本申请的实施例对应用场景不做限定。终端有时也可以称为终端设备、终端装置、用户设备(user equipment，UE)、接入终端设备、车载终端、工业控制终端、UE单元、UE站、移动站、移动台、远方站、远程终端设备、移动设备、UE终端设备、无线通信设备、机器终端、UE代理或UE装置等。终端可以是固定的，也可以是移动的。
在本申请中，终端可以是物联网(internet of things，IoT)系统中的终端，IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。本申请中的终端可以是机器类型通信(machine type communication，MTC)中的终端。本申请的终端可以是作为一个或多个部件或者单元而内置于车辆的车载模块、车载模组、车载部件、车载芯片或者车载单元，车辆通过内置的所述车载模块、车载模组、车载部件、车载芯片或者车载单元可以实施本申请的方法。因此，本申请实施例可以应用于车联网，例如车辆外联(vehicle to everything，V2X)、车间通信长期演进技术(long term evolution vehicle，LTE-V)、车到车(vehicle to vehicle，V2V)等。作为示例而非限定，在本申请中，终端可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
下面以基于蜂窝网的V2X通信场景举例，此时终端可以是内置于车辆的用于通信的车载模块、车载模组、车载部件、车载芯片或者车载单元，如图2所示，V2X通信包括车与车的通信(Vehicle to Vehicle，V2V)、车与行人的通信(Vehicle to Pedestrian，V2P)、车与基础设施的通信(Vehicle to Infrastructure，V2I)、车与网络的通信(Vehicle to Network，V2N)等。其中，V2V是指车辆或车载设备之间进行SL通信。车载终端可以实时获取周围车辆的车速、位置、行车情况等信息，车辆间也可以构成一个互动 的平台，实时交换文字、图片和视频等信息。例如，V2V通信可以应用于避免或减少交通事故、车辆监督管理等。V2P是指车辆或车载设备与行人或骑行者手持或通过其他方式携带的通信设备(如手机、笔记本电脑等)进行SL通信。V2P通信可以应用于避免或减少交通事故、信息服务等。V2N是指车载设备通过接入网/核心网与云平台连接，云平台与车辆之间进行数据交互，并对获取的数据进行存储和处理，提供车辆所需要的各类应用服务。V2N通信可以应用于车辆导航、车辆远程监控、紧急救援、信息娱乐服务等。V2I是指车辆或车载设备与路侧单元(road side unit，RSU)、智能路灯、交通摄像头等路侧基础设施进行SL通信，路侧基础设施也可以获取附近区域车辆的信息并发布各种实时信息。V2I通信主要可以应用于实时信息服务、车辆监控管理、不停车收费等。
本申请实施例提供的方案主要涉及终端自主选择资源的模式(例如mode 2或mode4)，终端基于自身侦听的结果在选择窗内的侧行资源池(sidelink resource pool)选择用于发送侧行信息的资源，侧行资源池可以是终端通过网络设备的资源池配置信息获得的，可以是协议预定义的，也可以是通过终端自身保存的预配置信息获得的，其中侧行资源池可以理解为可用于侧行通信的时频资源的集合。假设终端在时隙n触发资源选择，终端持续侦听侦听窗口内所有属于SL资源池的时隙中除过终端自身进行过传输的时隙之外剩余的所有时隙，根据侦听的结果从选择窗口内排除已经被其他终端预留的资源，然后终端将排除后得到的候选资源集合上报给终端高层(higher layers)。
应理解，本申请中描述的“预定义”是指某个值或某个参数定义于通信协议中，一般的通信协议中定义的内容保存于基带芯片中。本申请中描述“预配置”是指某个值或某个参数在通信协议中允许被配置为不同的取值，具体可以根据各国家或行业标准确定，所以该值或该参数在每个国家/地区/行业可以有不同的预配置的取值，预配置的取值在设备出厂时已经预配置于设备或装置中，例如终端整机、通信模块或基带芯片等。
应理解，本申请中的表达式[A,B]表示包含边界点A和B的取值范围，表达式(A,B)表示同时不包含边界点A和B的取值范围。同理地，表达式[A,B)表示包含边界点A且不包含边界点B的取值范围，表达式(A,B]表示不包含边界点A且包含边界点B的取值范围。全文其他地方对此不再赘述。
下面简单介绍现有的3GPP协议中描述的侦听(sensing)机制：
1)定义选择窗口(selection window)为时隙范围[n+T 1,n+T 2]，n+T 1为起始时隙编号，n+T 2为结尾时隙编号，其中终端在时隙n触发资源选择。假设SL资源池中每个时隙上的频域资源包括的子信道个数为N subCH，SL资源池中每个时隙上包含的子信道构成的子信道集合可以表示为
Figure PCTCN2020142308-appb-000001
一个候选资源R x,y被定义为在时域上位于选择窗口[n+T 1，n+T 2]内属于SL资源池的时隙
Figure PCTCN2020142308-appb-000002
在频域上位于子信道索引为{x+j}的子信道集合，其中j＝0,...,L subCH-1。也就是说，一个候选资源在频域上体现为长度等于L subCH的一组连续的子信道，在时域上位于一个时隙。其中L subCH可以为用于承载终端的待发送数据的PSSCH和/或PSCCH包括的子信道的个数。根据上述候选资源的定义，选择窗中的每个时隙上的候选资源的个数为N subCH-L subCH+1。进一步地，选择窗中的SL资源池内任何一组符合上述条件的，即一个时 隙上长度等于L subCH的连续子信道，都被认为是一个候选资源R x,y，选择窗内全部候选资源的总数记为M total。
下面以一个具体的示例简单说明一个时隙上的候选资源，如图3所示，频域资源池包括的最大子信道个数N subCH为8，可以理解为SL资源池中一个时隙范围包含的用于SL的最大子信道个数为8，那么频域资源池对应的子信道集合可以表示为S＝{S 0,S 1,…,S 7}，如图中示出的某个时隙上编号0～7的8个连续的子信道。假设候选资源的频域长度L subCH为2，例如用于承载待发送数据的PSSCH需占用的子信道的个数为2，则每个时隙上的候选资源总数为N subCH-L subCH+1＝7。图3中标出了该时隙上由子信道0～7构成的所有7个候选资源，可以理解的，基于相同的原则可以得到选择窗内全部候选资源。
2)侦听窗口可定义为时隙范围
Figure PCTCN2020142308-appb-000003
其中T 0由高层参数sl_SensingWindow配置，
Figure PCTCN2020142308-appb-000004
由终端根据下方的表1确定。表中的μ SL与终端的SL带宽部分(bandwidth part，BWP)对应的子载波间隔(sub-carrier spacing，SCS)有关，μ SL可以理解为SL BWP的SCS配置参数。具体的，子载波间隔SCS与μ SL的对应关系由下方的表2示出。终端可以根据表1和表2确定参数
Figure PCTCN2020142308-appb-000005
其中表1和表2为协议预定义的。终端需要监听(monitor)侦听窗口内除其自身进行发送的且属于SL资源池的时隙，其中对时隙的监听基于在这些时隙上的PSCCH解码和RSRP测量，PSCCH上承载其他终端发送的侧行控制信息(sidelink control information，SCI)。触发时隙n和侦听窗口以及选择窗口之间时域上的关系可以如图4所示。
表1
Figure PCTCN2020142308-appb-000006
Figure PCTCN2020142308-appb-000007
表2 μ SL与子载波间隔SCS的关系
μ SL Δf＝2 μ·15[kHz]
0 15
1 30
2 60
3 120
4 240
3)定义门限Th(prio RX,prio TX)为接收到的SCI指示的优先级值和终端的待发送数据对应的优先级值的函数，其中SCI指示的优先级值可以是PSSCH和/或PSCCH对应的优先级值。参数prio RX表示接收到的其他终端的SCI中指示的优先级值，参数prio TX表示终端自身的待发送数据对应的优先级值。应理解，一般在协议定义当中优先级值 越高表示优先级越低。
4)定义包括全部M total个候选资源的集合为S A。
5)如果一个候选资源R x,y同时满足以下条件，则终端应当将该满足条件的候选资源R x,y从集合S A中排除：
- 终端没有侦听时隙
Figure PCTCN2020142308-appb-000008
例如终端自身在时隙
Figure PCTCN2020142308-appb-000009
进行传输的情况；
- 存在整数j满足y+j×P′ rsvp_TX＝m+q×P′ rsvp_RX，这里q＝1,2,…,Q；j＝0,1,…,C resel-1。P′ rsvp_TX为终端的资源预留间隔P rsvp_TX由毫秒(ms)单位转换为逻辑时隙为单位得到的逻辑值，也可以称为逻辑周期，资源预留间隔P rsvp_TX可以是高层指示的参数。P′ rsvp_RX为接收到的其他终端的SCI中指示的资源预留间隔P rsvp_RX转换为逻辑时隙为单位得到的逻辑值。如果P rsvp_RX≤T scal并且n′-m≤P′ rsvp_RX，
Figure PCTCN2020142308-appb-000010
否则，Q＝1。其中如果时隙n属于sidelink资源池，
Figure PCTCN2020142308-appb-000011
否则
Figure PCTCN2020142308-appb-000012
为时隙n之后第一个属于sidelink资源池的时隙。T cala为选择窗长度T 2转换为以毫秒(ms)为单位后得到的值。
6)如果候选资源R x,y同时满足以下条件，则该候选资源R x,y应当从集合S A中被排除：
a)终端在时隙
Figure PCTCN2020142308-appb-000013
收到SCI,该SCI中的字段"Resource reservation period"(若字段"Resource reservation period"存在)指示了值P rsvp_RX，并且该SCI中的字段"Priority"指示了值prio RX，其中值P rsvp_RX为该SCI对应的PSSCH的资源预留间隔，单位为毫秒(ms)，值prio RX为该SCI对应的PSSCH的优先级值。
b)终端根据该SCI确定的RSRP测量结果高于门限Th(prio RX,prio TX)。
c)终端在时隙
Figure PCTCN2020142308-appb-000014
收到的SCI确定的时频资源与候选资源
Figure PCTCN2020142308-appb-000015
重合，或当SCI中的字段"Resource reservation period"存在时，终端预期在
Figure PCTCN2020142308-appb-000016
时隙收到的SCI所确定的时频资源与候选资源
Figure PCTCN2020142308-appb-000017
重合。其中q＝1,2,…,Q，j＝0,1,…,C resel-1，
Figure PCTCN2020142308-appb-000018
为终端的资源预留间隔P rsvp_TX由毫秒(ms)单位转换为逻辑时隙为单位得到的逻辑值，资源预留间隔(resource reservation interval)为高层提供的参数。P′ rsvp_RX为接收到SCI指示的资源预留间隔P rsvp_RX转换为逻辑时隙为单位得到的逻辑值。如果P rsvp_RX≤T scal并且n′-m≤P′ rsvp_RX，
Figure PCTCN2020142308-appb-000019
否则，Q＝1。其中如果时隙n属于SL资源池，那么
Figure PCTCN2020142308-appb-000020
否则
Figure PCTCN2020142308-appb-000021
为时隙n之后第一个属于SL资源池的时隙。T scal为选择窗长度T 2转换为以毫秒(ms)为单位后得到的值。应理解，将一个以毫秒(ms)为单位的值转换为逻辑时隙为单位表示计算该值对应的时长内包含的SL时隙的个数。终端根据接收到的SCI确定的时频资源为SCI指示的预留资源，时域上位于SCI的发送时隙之后。在如图4所示的示例中，终端1～4发送的SCI分别指示了各自预留的资源(预留资源上标注了对应发送终端的名称，例如终端1)，终端1～4的预留资源位于选择窗口内，则侦听终端需要将与这些预留资源重叠的候选资源从候选资源集合S A排除掉。
7)如果候选资源集合S A中剩余的候选资源少于M total的X％，则将RSRP门限Th prio TX,prio RX升高3dB,然后重复步骤4)至6)。X的值可以从配置的多个值中选取，例如从20,35,50中选择。
经过上述的步骤，进行侦听的终端将最终得到的候选资源集合S A汇报给终端的高层，高层再从集合S A中完成最终的资源选择。根据上述对mode2资源确定方法的描述，可以看出终端只能侦听在侦听窗口内除自身发送时隙之外的时隙，即当发送终端在发送数据时无法同时进行侦听，也就是说现有的侦听机制无法解决终端半双工带来的侦听可靠性低的问题。因此在其他终端在该终端未侦听的时隙发送数据的情况下或在该终端未侦听的时隙发送了SCI指示了选择窗口内的预留资源的情况下，发送终端无法侦听到这些未侦听时隙上的预留信息，进而对这些预留资源进行排除，因此发送终端还是可能选择到与其他终端预留的资源相同的资源，造成资源的碰撞，降低了传输可靠性并增大系统的干扰。另外，这些未侦听时隙上的其他终端的优先级信息以及RSRP测量值，终端也同样无法获取，所以终端在传输之前进行的资源抢占(preemption)的检测时也无法正确识别所选资源是否需要重选。
3GPP标准组织在release 17立项了用户设备间协作(Inter-UE coordination)机制，标准讨论了UE协作机制的基本需求，但具体的应用还没有被规定。UE协作可以分为基于触发和基于非触发两种协作机制。示例性的，对于基于触发的协作机制，若发送终端需要协作终端的协作信息，发送终端要先向协作终端显式地发送触发信息，以触发协作终端向发送终端反馈协作信息，如图5所示。此时UE协作的机制可以由被协作终端，也就是发送终端，来主动的触发。对于基于非触发的协作机制，发送终端不需要主动发送触发信息给协作终端，协作终端自发的向发送终端反馈协作信息，如图6所示。此时协作终端发送协作信息可以是由事件触发(event trigger)的，或基于一些预定义的条件等其他方式，本申请对此不做限定。除了上述的触发和非触发方式，UE协作还可以是网络设备通过信令触发的或周期性触发的等等，本申请对此也不做限定。在UE协作机制下终端之间可以针对SL通信的各个阶段进行互相协作，例如协作终端可以协助发送终端进行资源选择。发送终端还可在其他终端的协作下在侧行链路资源上进行传输，例如在图5和图6所示的交互流程中发送终端基于来自协作终端的协作信息向协作终端或除协作终端之外的其他终端发送侧行数据。具体地，来自协作终端的协作信息可以用于辅助被协作终端的侧行传输，比如协作信息可以包括可以使用的侧行链路资源的指示信息和/或不可以使用的侧行链路资源的指示信息。其中协作终端通过协作信息指示的不可以使用的侧行链路资源，可以是协作终端检测到已经被其他终端预约(reserve)的资源，或者协作终端自身要用于发送或接收数据的资源等。相应的，协作信息中指示的可以使用的侧行链路资源可以是协作终端根据侦听(sensing)和/或自身用于发送或接收数据的资源确定的，例如侧行资源池中排除上述被预留的资源之后剩余的资源。发送终端(或称为被协作终端)通过协作终端提供的上述信息，可以更加有效的进行资源选择，避免干扰，提高系统的吞吐量。
本申请实施例提供的方法涉及UE协作机制下mode 2的终端的资源选择，可以进一步提高mode2资源确定的性能，应理解本申请实施例提供的方法也不限定于3GPP协议限定的UE协作场景。具体的，本申请实施例提供一种通信方法，可以改善发送 终端无法侦听到这些未侦听时隙(例如终端处于发送状态的时隙)上的预留信息的问题，减少发送终端可能选择到与其他终端预留的资源重叠的资源的概率，可以增加传输可靠性进而降低系统的干扰。下面结合附图对本申请实施例进行详细的说明，下述的实施例和实施方式可以相互结合，对于相同或相似的概念或过程可能在某些实施例不再赘述。应理解，本申请中所解释的功能可以通过独立硬件电路、使用结合处理器/微处理器或通用计算机而运行的软件、使用专用集成电路，和/或使用一个或多个调制解调处理器来实现。当本申请描述为方法时，其还可以在计算机处理器和被耦合到处理器的存储器中实现。
图7为本申请实施例提供的一种通信方法700的交互流程示意图。方法700的执行主体可以是终端，也可以是具备终端功能的组合器件或部件，也可以是应用于终端中的通信芯片(例如处理器、基带芯片、或芯片系统等)。该方法的执行主体还可以是网络设备，也可以是具备网络设备功能的组合器件或部件，也可以是应用于网络设备中的通信芯片(例如处理器、基带芯片、或芯片系统等)。下文为了方便，仅以终端为执行主体为例进行描述。如图7所示，方法700可以包括710部分和720部分。
710部分：第一终端确定第一预留资源和第二预留资源有资源冲突，其中，所述第一预留资源为来自第二终端的侧行控制信息指示的预留资源，所述第二预留资源属于所述第一终端在至少一个时间单元上监听的来自一个或多个其他终端的侧行控制信息指示的至少一个预留资源，所述至少一个时间单元为所述第二终端未监听的时间单元。
720部分：所述第一终端发送冲突指示信息，其中，所述冲突指示信息用于指示所述第一预留资源或所述第二预留资源上的资源冲突。
示例的，第一终端可以是上文描述的UE协作机制中的协作终端，第二终端可以是被协作终端。另外本申请实施例提供的方法也可以不限定于UE协作机制中，也就是说第一终端和第二终端可以不存在协议中定义的协作与被协作的关系，可以是任意两个可进行侧行通信的终端。
需要说明的是，本申请实施例描述的时间单元表示时域上的调度单元，在不同通信系统中或不同应用场景下可以是不同的时域单位，例如时间单元可以是时隙(slot)、子帧(subframe)、符号(symbol)或迷你时隙(mini-slot)等，还可以是其他时域调度单元，本申请实施例对此不做限定。
本申请实施例提供的通信方法中第一终端通过监听第二终端未监听的至少一个时间单元确定第二终端指示的第一预留资源与其他终端指示的第二预留资源有资源冲突，并发送冲突指示信息，通过本申请实施例提供的通信方法可以改善第二终端无法侦听到这些未侦听时隙(例如第二终端处于发送状态的时隙)上的预留信息的问题，减少第二终端选择到的预留资源与其他终端预留的资源重叠的概率，可以增加传输可靠性进而降低系统中的干扰。
在方法700中，第二预留资源属于第一终端在至少一个时间单元上监听的来自一个或多个其他终端的侧行控制信息SCI指示的至少一个预留资源，也就是说，第一终端根据检测到的来自一个或多个其他终端的SCI获知对应终端的预留资源。同理的，第一终端也可以根据接收到或检测到的来自第二终端的SCI获知第一预留资源。一般 的，第一终端盲检测来自其他终端的SCI，SCI中会指示预留资源的时频位置和/或资源预留周期(Resource reservation period)。示例而非限定的，预留资源的时频位置可以通过SCI中的时频资源分配字段“frequency resource assignment”和“time resource assignment”来指示，资源预留周期可以通过SCI中的字段“resource reservation period”来指示。第一终端根据来自第二终端的SCI中指示的预留时频资源相关的信息确定第一预留资源，其中第一预留资源可以是周期性的或非周期性的。SCI中一般还会指示PSSCH的发送终端和接收终端，例如指示发送终端的身份标识(source identification，S-ID)和接收终端的身份标识(destination identification，D-ID)，或者指示发送终端和接收终端各自对应的组ID或索引号等。来自第二终端的SCI中指示的接收终端可以是第一终端，也可以不是第一终端。如图7所示的示例，可选的在710部分之前，第一终端可以检测来自第二终端的SCI和通信范围内来自其他终端的SCI，上述SCI中指示的接收终端可以不是第一终端，第一终端通过对检测到的SCI进行译码获知第一预留资源和一个或多个其他终端的至少一个预留资源。
可选的，第一终端也可以通过其他方式获知第一预留资源，例如在710部分之前第二终端可以向第一终端发送配置信令，该配置信令指示第二终端预留的资源，该预留的资源可以是用于向其他终端发送侧行数据。其中配置信令可以为SCI、PC5-RRC信令或侧行媒体接入控制层控制单元(sidelink Media Access Control control element，SL MAC CE)等信令。此时第一终端可以通过配置信令获知第二终端的预留资源，不需要通过检测第二终端向其他终端发送的SCI，可以避免漏检等造成的信息缺失，使得准确度更高。并且第二终端可以在向其他终端发送SCI之前向第一终端发送配置信令，这样第一终端可以提前获知第二终端的预留资源，使得第一终端有更长的处理时间以提高确定资源冲突的准确性。
在710部分中，该第二终端未监听的时间单元可以为以下中的一种或多种的组合：第二终端处于发送状态的时间单元、处于所述第二终端的不连续接收DRX开启时间段的时间单元，和，第二终端在部分侦听模式确定的未监听时间单元。应理解，第二终端的处于发送状态的时间单元不仅包括第二终端发送侧行信息的时间单元，也可以包括第二终端发送上行信息的时间单元。
前文描述了由于SL终端在很多情况下不支持全双工，即在同一时刻同时进行发送和接收，因此在终端在自身处于发送状态的时间单元上无法进行侦听(sensing)。除了无法侦听自身处于发送状态的时间单元之外，还存在其他的终端无法进行侦听的情况。其中一种就是终端的不连续接收(discontinuous reception，DRX)关闭时间段(DRX Off Duration)。3GPP在Uu口引入了DRX技术用于省电(Power Saving)。由于终端的数据包的产生一般并不是连续的，在没有数据传输的时候可以通过关闭终端的接收电路来降低功耗，从而提升移动电池的使用时间。所以，终端会被配置若干个连续的DRX周期(DRX cycle)。一个DRX周期包括一个或多个DRX开启时间段(DRX On Duration)，一个DRX周期中的所有DRX On Duration可以合称为激活时间(active time)，或者也可以将每个开启时间段都称为激活时间。DRX周期内开启时间段之外的其他时间为DRX关闭时间段。在NR系统中，每个DRX开启时间段(DRX On Duration)的时长由参数drx-onDurationTimer指示。一个DRX周期中的所有DRX  On Duration在时间上可以是连续，也可以是非连续的。在激活时间内，终端可以监听并接收PDCCH或PSCCH，也可以说此时终端处于激活期。在DRX周期内的其他时间，例如DRX关闭时间段，终端不接收下行信道的数据以节省功耗，也可以说此时终端处于休眠期。上述激活时间可以只包括DRX开启时间段(DRX On Duration)，或者激活时间包括所有可配置的允许终端接收的时间段。一个具体的DRX周期的示例如图8所示，终端被配置了多个DRX周期，每个DRX周期中包括多个DRX开启时间段，DRX周期内除DRX开启时间段之外的时间段为DRX关闭时间段。
同样的对于SL传输场景，未来也同样可以引入DRX技术来降低功耗，从而提升移动电池的使用时间。当发送终端被配置DRX后，在DRX关闭时间段(DRX Off Duration)不接收来自其他终端的数据，即在DRX关闭时间段无法侦听来自其他终端的SCI。此时处于终端的DRX关闭时间段的时间单元也属于终端未侦听的时间单元。
此外，另一种终端有未监听时间单元的情况是SL传输场景中可能存在的部分侦听(partial sensing)资源选择模式。当终端被配置为部分侦听时，终端根据候选资源集合确定出需要进行侦听的时间单元。这些需要进行侦听的时间单元仅占侦听窗口范围中的一部分，在除这些确定出的侦听时间单元之外终端不进行侦听。此时终端在部分侦听模式确定的非监听时间单元也属于终端未侦听的时间单元。应理解，本申请描述的多种未监听时间单元的情形仅作为示例而非限定的，还可以有其他原因导致在侦听窗口内有终端自身未监听的时间单元，并且这些情形可以单独出现，也可以同时出现。类似上文描述的，第二终端无法侦听到这些未监听时隙上的预留信息，进而可能选择到与其他终端预留的资源重叠的资源，造成资源的碰撞，降低了传输可靠性并增大系统的干扰。
一种具体的实施方式中，第一终端在确定资源冲突时，仅根据第二终端未监听的那些时间单元上监听的信息，例如第二终端未监听的那些时间单元上来自其他终端的SCI，而不考虑其他第二终端已监听或可监听的时间单元上的信息，可以降低监听的重复度，降低第一终端的处理复杂度，保证正确率的同时提高效率。可选的，第一终端可以通过监听来自第二终端的侧行信息(例如SCI和/或PSSCH)获知第二终端的处于发送状态的时间单元，即第二终端未监听的时间单元。应理解，第二终端的处于发送状态的时间单元不仅包括第二终端发送侧行信息的时间单元，也可以包括第二终端发送上行信息的时间单元。此时第一终端无需额外的信令交互即可获得第二终端未监听的时间单元的相关信息，可以进一步减小系统的信令开销。或者第一终端可以通过来自第二终端的配置信令获知第二终端未监听的时间单元，其中配置信令可以为SCI、PC5-RRC信令或侧行媒体接入控制层控制单元(sidelink Media Access Control control element，SL MAC CE)等信令。此时第一终端不需要检测第二终端向其他终端发送的SCI来获知第二终端未监听的时间单元的信息，可以避免漏检等造成的信息缺失，使得准确度更高。并且第二终端可以在向其他终端发送SCI之前向第一终端发送配置信令，这样第一终端可以提前获知第二终端未监听的时间单元，使得第一终端有更长的处理时间以提高确定资源冲突的准确性。
可选的，在方法700中第一终端仅监听(monitor)第二终端未监听的时间单元。也就是说，第一终端只在第二终端未监听的至少一个时间单元上监听的来自一个或多 个其他终端的侧行控制信息，而在其他不属于第二终端未监听的时间单元上不进行监听。此时第一终端可以通过来自第二终端的配置信令获知第二终端未监听的时间单元，具体方式和上述的过程相同，此处不再赘述。由于第一终端可以再侦听前获知第二终端在哪些时间单元上无法进行侦听，第一终端可以仅监听这些时间单元，即可以有效地辅助第二终端的资源确定过程，提高传输可靠性，又可以减少第一终端的功率损耗，降低第一终端的操作复杂度，提高整体性能。
应理解，第一终端在第二终端未监听的至少一个时间单元上监听来自一个或多个其他终端的SCI，这些SCI指示的至少一个预留资源包括与第一预留资源有资源冲突的第二预留资源。其中指示第二预留资源的SCI(来自其他终端)与指示第一预留资源的SCI(来自第二终端)可以位于不同的时间单元，也就是说，当确定是否有其他预留资源与第一预留资源有冲突时，第一终端不仅考虑指示第一预留资源的SCI所在的时间单元。例如，假设第一终端在时间单元k被触发冲突指示信息的发送，那么第一终端需要监听时间单元k之前的，或在时间单元k之前的一个时间范围内的第二终端未监听的时间单元。可选的，第一终端需要确定与时间单元k相关的所有需监听的时间单元上来自一个或多个其他终端的SCI指示的预留资源是否造成资源冲突。需监听的时间单元与时间单元k相关可以理解为这些需监听的时间单元是根据时间单元k和/或其他参数确定的。
下面结合附图通过两个具体的示例来说明。假设一个SL资源池共包括10个子信道(subchannel)，可以理解为该SL资源池中一个时间单元上包括10个可用于SL传输的子信道，示例性的此处以子信道编号0到9来表示。如图9所示，第二终端在时间单元n中的子信道3和4上发送了侧行信息，侧行信息可以包括SCI和侧行数据，或者侧行信息仅包括SCI。其中第二终端发送的SCI指示了时间单元m上的第一预留资源，具体的第一预留资源位于子信道2。另外第一终端在时间单元n中的子信道1上检测到第三终端发送的SCI，该SCI指示了第三终端的第二预留资源，该第二预留资源也位于时间单元m中的子信道2上。此时指示第二预留资源的SCI(来自第三终端)与指示第一预留资源的SCI(来自第二终端)位于相同的时间单元n。如图10所示，第二终端在时间单元n中的子信道3和4上发送了侧行信息，其中第二终端发送的SCI指示了时间单元m上的第一预留资源，具体的第一预留资源位于子信道2。另外第一终端在时间单元n+1中的子信道1上检测到第三终端发送的SCI，该SCI指示了第三终端的第二预留资源，该第二预留资源也位于时间单元m中的子信道2上。其中时间单元n和时间单元n+1都属于第二终端未监听的时间单元，且与第一终端发送冲突指示信息的时间单元k相关。此时指示第二预留资源的SCI(来自第三终端)与指示第一预留资源的SCI(来自第二终端)位于不同的时间单元。应理解，子信道为频域上的调度单位，此处及全文其他地方仅以子信道为单位作为示例进行描述，本申请中的频域单位也可以替换为物理资源块(physical resource block，PRB)、资源块(resource block，RB)、资源单元(resource element，RE)或控制信道元素(control channel element，CCE)等。
一种可选的实施方式中，在710部分，第一终端确定第一预留资源和第二预留资源有资源冲突，包括：第一终端确定该第一预留资源与该第二预留资源在时域上有重 叠(overlapping)。或者说此时第一终端将第一预留资源和第二预留资源在时域上重叠确定为第一预留资源和第二预留资源有资源冲突。一般的，终端指示的预留资源位于一个时间单元内，也就是说，第一预留资源与第二预留资源在时域上有重叠表示该第一预留资源与该第二预留资源位于相同的时间单元。若第一预留资源或第二预留资源包含多于一个时间单元，那么第一预留资源和第二预留资源占用的时间单元部分相同或全部相同都属于在时域上有重叠。该种实施方式中，第一终端仅根据时域上是否有重叠来确定资源冲突，可以简化第一终端的行为，可以减小第一终端确定资源冲突的复杂度。
另一种可选的实施方式中，资源冲突可以具体分为两种类型：第一种为时频资源重叠，如图11中的(1)所示，第二终端预留的资源为时间单元中的子信道3和4，第三终端预留的资源为同一时间单元中的子信道2和3，则两者预留的资源中子信道3是重叠的，也就是说第二终端预留的资源和第三终端预留的资源在时频域上有重叠。应理解，在时频域上有重叠可以包括全部重叠和部分重叠，在图11中的(1)，第二终端预留的资源与第三终端预留的资源只在子信道3上重叠，此时上述两个预留资源在时频域上为部分重叠。这种情况下，若第二终端和第三终端在不知情的情况下在各自预留的资源上进行传输，那么传输之间就会产生碰撞，导致通信错误。第二种为收发并存，即第一预留资源与第二预留资源在时域上重叠，且第一预留资源和第二预留资源分别用于同一终端发送侧行信息和接收侧行信息。此时不限定第一预留资源与第二预留资源在频域上是否重叠。在很多情况下SL终端不支持全双工，也就是说在一个时间单元上SL不支持同时进行发送和接收。因此若两个预留资源位于相同的时间单元上，虽然频域上可能不重叠的两个资源理论上不会造成传输碰撞，但是当两个预留资源是分别用于同一终端的发送和接收时仍然会因为该终端不支持全双工而造成通信错误，导致至少一个传输失败。如图11中的(2)所示，第二终端预留的资源为时间单元上的子信道3和4，第三终端预留的资源为时间单元上的子信道1。若第二终端预留的子信道3和4用于向第三终端发送数据，那么意味着第三终端需要在该时间单元上的子信道1发送数据并在子信道3和4接收数据。若第三终端预留的子信道1用于向第二终端发送数据，那么意味着第二终端需要在该时间单元上的子信道3和4发送数据并在子信道1接收数据。上述两种情况都属于在该时间单元上出现了收发并存。
在该种实施方式中，在710部分，所述第二预留资源与所述第一预留资源有资源冲突，包括：所述第一预留资源与所述第二预留资源有时频重叠；和/或，所述第一预留资源与所述第二预留资源在时域上重叠，且所述第一预留资源和所述第二预留资源分别用于所述第二终端发送侧行信息和用于所述第二终端接收侧行信息；和/或，所述第一预留资源与所述第二预留资源在时域上重叠，且所述第一预留资源和所述第二预留资源分别用于第三终端接收侧行信息和用于所述第三终端发送侧行信息，其中所述第三终端为指示所述第二预留资源的侧行控制信息的发送终端。也就是说，第一终端确定第二预留资源与第一预留资源有资源冲突可以是上述的三种情况中的一种，或是上述三种情况的任意组合。
在方法700中，可选的，第一终端是否发送冲突指示信息还要根据RSRP测量结果。例如第一终端在满足以下条件的情况下发送冲突指示信息：(1)第一终端确定第 一预留资源与第二预留资源有资源冲突；(2)第一终端确定与第三终端之间的链路上的参考信号接收功率RSRP测量值高于第一门限，或，第一终端确定第一终端与第三终端之间的链路上的RSRP测量值高于第一终端与第二终端之间的链路上的RSRP测量值。因此在第一终端发送冲突指示信息之前，方法700还可以包括：第一终端确定与第三终端之间的链路上的参考信号接收功率RSRP测量值高于第一门限；或，第一终端确定第一终端与第三终端之间的链路上的RSRP测量值高于第一终端与第二终端之间的链路上的RSRP测量值。该种实施方式中，第一终端可以更加准确的判断资源冲突是否会对第一终端的传输造成影响。例如当RSRP的测量结果低于一定门限时，即使第一预留资源和第二预留资源在时频域上发生重叠，其他终端在第二预留资源上的传输也不会对第二终端造成严重干扰，此时在确定有资源冲突的情况下第一终端也不向第二终端或第三终端发送冲突指示信息。进一步增加传输可靠性，避免不必要的资源重选或资源放弃。
在方法700中，可选的，上述的条件(2)可以应用于一个系统中确定资源冲突的部分场景中。示例的，当资源冲突类型为时频资源重叠，且第一终端为第二预留资源对应的接收终端时，第一终端在满足上述条件(1)和(2)的情况下发送冲突指示信息。在资源冲突类型为时频资源重叠，且第一终端不为第二预留资源对应的接收终端时，第一终端仅考虑资源冲突，即第一终端在满足条件(1)的情况下发送冲突指示信息。另外当资源冲突类型为收发并存时，第一终端仅考虑时域重叠，即第一终端在确定第一预留资源与第二预留资源在时域上有重叠的情况下发送冲突指示信息。由于当第一终端为第二预留资源对应的接收终端时，其他终端与第二终端的资源冲突会直接干扰第一终端的接收，并且此时第一终端可以准确测量到第三终端到第一终端的链路上的参考信号接收功率RSRP，因此第一终端对其他终端的侦听结果可以反映真实的干扰状况，所以在这种情况下，第一终端可以在满足上述条件(1)和(2)的情况下发送冲突指示信息。当第一终端不是第二预留资源对应的接收终端时，第一终端只能测量到其他终端与第一终端之间的链路上的RSRP值，不能测量到其他终端与第二终端对应接收终端之间的链路上的RSRP值，因此第一终端的RSRP测量结果无法准确反映其他终端与第二终端的接收终端之间的链路上的干扰情况，所以，在这种情况下，第一终端可以仅考虑资源冲突，即第一终端在满足条件(1)的情况下发送冲突指示信息。
在720部分，第一终端发送冲突指示信息，可以包括：第一终端向第二终端发送冲突指示信息。或者第一终端向第三终端发送冲突指示信息，第三终端为指示第二预留资源的侧行控制信息SCI的发送终端。也就是说第一终端发送冲突指示信息的目的终端可以是第二终端或第三终端。示例的，若第一终端向第二终端发送冲突指示信息，该冲突指示信息用于指示第一预留资源上的资源冲突，若第一终端向第三终端发送冲突指示信息，该冲突指示信息用于指示第二预留资源上的资源冲突。或者可选的，不管冲突指示信息的目的终端是第二终端或第三终端，冲突指示信息指示第一预留资源和第二预留资源上的资源冲突。在一种可能的实施方式中，在第一预留资源对应的优先级值小于第二预留资源对应的优先级值的情况下，第一终端向第三终端发送所述冲 突指示信息。并且在第二预留资源对应的优先级值小于第一预留资源对应的优先级值的情况下，第一终端向第二终端发送所述冲突指示信息。其中，第一预留资源对应的优先级值可以是由该第一预留资源相关的侧行控制信息指示的，第二预留资源对应的优先级值可以是由该第二预留资源相关的侧行控制信息指示的。这里仅作为示例，本申请实施例不排除其他获取预留资源对应的优先级值的方式。应理解，一般的优先级值越高表示优先级越低，相应的优先级越低表示优先级越高。该种实施方式中，第一终端根据预留资源对应的优先级确定冲突指示信息的目的终端，具体的第一终端向优先级较低的终端发送冲突指示信息，这样优先级较低的终端可以根据冲突指示信息对存在资源冲突的预留资源进行重选，或者根据冲突指示信息确定存在资源冲突的预留资源需要进行重选。能够更加合理地解决资源冲突的情况，保障高优先级的数据优先传输，并节约无线信令。
在720部分中，冲突指示信息用于指示第一预留资源和/或第二预留资源上的资源冲突，具体的冲突指示信息可以是以下三种指示方式中的一种。应理解，以下以冲突指示信息用于指示第一预留资源上的资源冲突为例进行描述，实际中可以替换为第一预留资源和/或第二预留资源。
方式一：冲突指示信息用于指示第一预留资源是否存在资源冲突。也就是说，冲突指示信息指示第一预留资源存在资源冲突，或第一预留资源上不存在资源冲突。一种具体的示例中，冲突指示信息承载于包含一个或多个比特的字段，该字段的不同取值分别用于指示以下信息中的一种：第一预留资源存在资源冲突；第一预留资源上不存在资源冲突。或者信令中包含承载冲突指示信息的字段用于指示第一预留资源存在资源冲突，信令中不包含承载冲突指示信息的字段用于指示第一预留资源上不存在资源冲突。例如，冲突指示信息为一个包含1比特的字段，该1比特取值为1指示第一预留资源存在资源冲突，该1比特取值为0指示第一预留资源上不存在资源冲突。再例如，冲突指示信息为预定义或配置的两个序列，发送序列1用于指示第一预留资源存在资源冲突，发送序列2用于指示第一预留资源上不存在资源冲突。方式一的指示方式占用通信资源少，且简单易实现。另外的方式一通过两个序列的指示方式无需编码和CRC校验，实现复杂度低。
方式二：冲突指示信息用于指示第一预留资源中存在资源冲突的一个或多个子信道。假设第二终端指示了在时间单元m上预留子信道4和子信道5。通过方式一指示资源冲突时，第二终端只能获知自身预留的子信道4和5上发生了资源冲突，但是不能知道具体哪个子信道上有资源重叠。若此时第二终端在基于冲突指示信息进行资源重选，如图3所示候选资源包含两个连续的子信道的情况下，第二终端需要避开所有可能的有资源冲突的位置，也就是说第二终端在进行资源重选时需要排除以下三种子信道组合：子信道3和4，子信道4和5，子信道5和6。若只有子信道4上有资源重叠，那么子信道5和6构成的候选资源实际上是可用的。通过方式二可以指示资源冲突的具体位置，冲突指示信息指示第一预留资源中存在资源冲突的一个或多个子信道，或者说冲突指示信息指示第一预留资源中存在资源冲突的一个或多个子信道的位置。比如采用多个比特或者多个序列指示第一预留资源的每个子信道上是否存在冲突。当采用多个序列时，每个序列可以对应一个循环偏移量，该循环偏移量决定序列的相位旋 转值。将某个基础序列按照不同的相位进行旋转，最终可以得到不同个的序列。
作为示例但不限定的，如图11(1)所示的情形，每个预留资源和候选资源包括两个连续的子信道，第三终端预留了时间单元m上的子信道2和3(第二预留资源)，第二终端预留了时间单元m上的子信道3和4(第一预留资源)，此时子信道3上发生了资源重叠。冲突指示信息可以是包括2个比特的字段，第一个比特用于指示第一预留资源中编号较小的子信道上是否有重叠，第二个比特用于指示第一预留资源中编号较大的子信道上是否有重叠，比特取值为1指示有重叠，取值为0指示没有重叠。那么当冲突指示信息的两比特取值为‘10’时，则第二终端可以获知子信道3上发生资源重叠。当采用多个序列指示时，冲突指示信息还可以是4个序列，每个序列对应一个循环偏移量。每2个序列为一个序列对。每个序列对指示一个子信道上的资源重叠情况。例如第一个序列对中的第一个序列用于指示第一预留资源中编号较小的子信道上有重叠，另外一个序列用于指示第一预留资源中编号较小的子信道上没有重叠。第二个序列对中的第一个序列用于指示第一预留资源中编号较大的子信道上有重叠，另外一个序列用于指示第一预留资源中编号较大的子信道上没有重叠。应理解，上述示例中冲突指示信息也可以包括多于两个比特，例如包括一些预留比特等。通过方式二的指示第二终端在基于冲突指示信息进行资源重选的时候可以确定需要排除包括子信道3的组合：子信道2和3，子信道3和4。因此方式二可以更加精细得指示预留资源上资源冲突的具体位置，当终端基于冲突指示信息进行重选或其他相应操作时能够避免过度的资源排除，从而避免资源浪费。
方式三：冲突指示信息用于指示第一预留资源所在的时隙中存在资源冲突的一个或多个子信道。或者说冲突指示信息用于指示第一预留资源所在的时隙中每个子信道上是否存在资源冲突。比如，采用多个比特或者多组序列指示第二预留资源所在的时间单元上的每个子信道是否存在冲突。一个具体的示例中，假设SL资源池包括10个子信道，冲突指示信息可以为包括10比特的比特地图(bitmap)，每个比特位上的取值用于指示对应编号的子信道是否有资源冲突。例如图11(1)所示的情形，第二终端预留了子信道3和4，第三终端预留了子信道2和3，此时冲突指示信息的10个比特的取值可以为：‘0001000000’，指示子信道3上资源重叠。或此时冲突指示信息的10个比特的取值可以为：‘0011000000’，接收终端可以基于冲突指示信息确定有资源冲突的两个预留资源占用的子信道。再例如图11(2)所示的收发并存的情形，第一预留资源包括子信道3和4，第二预留资源包括子信道1，此时冲突指示信息可以指示该第一预留资源和第二预留资源的位置，具体的，冲突指示信息的10个比特的取值可以为：‘0101100000’。方式三可以指示更加详细的资源占用情况，因此接收终端可以基于冲突指示信息更加准确的进行资源重选或其他相应操作，防止重选时再度选择已经被占用的资源，同时避免过度的资源排除导致的资源浪费。
进一步的，通过方式三冲突指示信息还可以指示该预留时间单元上其他终端的预留资源。例如，假设在图11(1)所示的情形中还存在第四终端预留了子信道8和9，那么此时冲突指示信息的比特取值可以为：‘0011000011’。则接收终端可以获知子信道2，3，4，8和9存在资源冲突或被占用，因此接收终端(第二终端或第三终端)在重选的时候需要排除包括子信道2,3,4,8,9的组合。例如当候选资源大小为两个连续 的子信道时，重选时需要排除子信道1和2，子信道2和3，子信道3和4，子信道4和5，子信道7和8，以及子信道8和9。
可选的，在资源冲突的类型为收发并存的情况下，第一终端发送的冲突指示信息采用上述方式一的指示方式。对于接收终端来说若存在收发并存的资源冲突，重选的资源优选地应该避开预留资源所在的时隙，因此冲突指示信息可以只指示预留资源是否存在资源冲突。
在720部分中，可选的，冲突指示信息直接指示接收终端需要进行资源重选。此时720部分可以替换为：第一终端发送冲突指示信息，其中，冲突指示信息用于指示所述第一预留资源需要被重选或所述第二预留资源需要被重选。
可选的，不管采用上述任一种指示方式，冲突指示信息在指示预留资源上的资源冲突之外还可以指示资源冲突类型。例如冲突指示信息中包括额外的1比特，用于指示资源冲突类型。与本申请上文中描述相同的，资源冲突类型包括时频重叠和收发并存(也可以成为半双工)。
在720部分中，对应的，第二终端或第三终端接收冲突指示信息。可选的，方法700还包括第二终端或第三终端对预留资源进行重选，或丢弃预留资源上的传输。以第二终端为例进行描述，第二终端接收到该冲突指示信息后，可以重选第一预留资源，或者第二终端放弃第一预留资源上的传输。可选的，当冲突指示信息中还指示资源冲突类型为第二终端自身存在收发并存时，第二终端可以有以下几种操作：1)第二终端重选第一预留资源，并且在进行资源重选时，重选的资源时需要避免与第一预留资源有时域重叠，也就是说重选的资源必须与第一预留资源位于不同的时间单元中；2)第二终端不在第一预留资源上发送数据，并且在第一预留资源上接收数据；3)第二终端放弃在第一预留资源上接收数据，并且继续在第一预留资源上发送数据。另外可选的，当第二终端接收冲突指示信息，并且冲突指示信息还指示资源冲突类型为第三终端(第二终端的接收终端)存在收发并存时，第二终端可以有以下几种操作：1)第二终端重选第一预留资源，且重选的资源必须与第二预留资源位于不同的时间单元中；2)第二终端放弃在第一预留资源上发送侧行信息。
应理解，上一段中只示例性的详细描述了第二终端接收到冲突指示信息后的行为，当第一终端向第三终端发送冲突指示信息，即第三终端接收冲突指示信息时，也可以有相应的操作，此处不再赘述。
一种可选的实施方式中，在第二终端接收到冲突指示信息后，还要根据RSRP的测量结果验证冲突指示信息的有效性。例如如果第二终端与第一终端之间链路上的RSRP测量值高于一个门限，则表示冲突指示信息有效，其中该门限可以是预定义或网络设备配置的。则该种实施方式中，在第二终端接收到该冲突指示信息且冲突指示信息有效的情况下，第二终端可以根据冲突指示信息重选第一预留资源，或者第二终端丢弃第一预留资源，也就是说不在第一预留资源上发送数据。或者该种实施方式中，在冲突指示信息有效的情况下，第二终端也可以不执行重选或放弃，例如当第二终端根据冲突指示信息确定资源冲突为收发并存时，第二终端可以保留第一预留资源，并不接收第二预留资源上的侧行数据。当然当第二终端根据冲突指示信息确定资源冲突为收发并存时，第二终端也可以接收第二预留资源上的侧行数据，并对第一预留资源 进行重选。
在方法700中，第一终端发送冲突指示信息，可以包括：第一终端在协作资源上发送所述冲突指示信息，协作资源为根据第二终端的发送资源确定的，或协作资源为根据第一预留资源确定的。其中协作资源可以理解为用于发送冲突指示信息的资源，参照上文中的描述，第一终端和第二终端可以是处于UE协作机制的终端对，此时第一终端可以被称为第二终端的协作终端，第二终端可以被称为被协作终端。在本申请提供的方法应用于UE协作场景时，第一终端可以通过协作信息向第二终端发送冲突指示信息，并且用于发送协作信息的资源可以和第一预留资源之间有对应关系，或者用于发送协作信息的资源可以和承载指示第一预留资源的SCI的资源之间有对应关系。通过资源之间的对应关系或映射关系，协作终端可以确定发送冲突指示信息的资源，并且被协作终端也可以根据资源的映射关系确定出可能发送的冲突指示信息的资源位置，进而去相应的资源上进行盲检。这样协作终端和被协作终端之间能够不通过信令的指示而直接获知可能出现的冲突指示信息的发送位置，提高了协作通信的效率。
本申请实施例提供了协作资源的映射方式，具体可以分为以下两种。
第一种：前向映射。也就是说协作资源是根据第二终端的发送资源确定的。示例而非限定的，如图12所示，假设第二终端在时间单元n上的子信道3和4进行了传输，第一终端根据该传输资源确定在时隙k上的子信道l内的第t个RB上发送冲突指示信息。
第二种：后向映射。也就是说协作信息的发送资源是根据第二终端的预留资源(例如第一预留资源)确定的。示例而非限定的，如图13所示，假设第二终端在时间单元n上的子信道3和4进行了传输，并且指示了时间单元m上的子信道2和3为预留资源，在该预留资源有资源冲突的情况下第一终端根据第二终端的预留资源，确定在时间单元k上的子信道l内的第t个RB上发送协作消息。
应理解，本申请实施例中描述的协作终端和被协作终端只是为了方便理解和描述，并不说明处于UE协作场景中或处于UE协作关系的终端一定被命名为协作终端或被协作终端，只要是能够支持UE协作功能的终端都可以被称作协作终端或被协作终端。
应理解，本申请实施例的各个方案可以进行合理的组合使用，并且实施例中出现的各个术语的解释或说明可以在各个实施例中互相参考或解释，对此不作限定。
还应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定。上述各个过程涉及的各种数字编号或序号仅为描述方便进行的区分，而不应对本申请实施例的实施过程构成任何限定。
以上，结合图7至图13详细说明了本申请实施例提供的方法。以下，结合图14至图16详细说明本申请实施例提供的装置。
图14是本申请实施例提供的通信装置的示意性框图。该通信装置可以是终端，也可以是具备终端功能的部件或组件，也可以是应用于终端中的芯片(例如基带芯片)，所述功能或模块可以通过软件实现，或者通过硬件实现，也可以通过硬件执行相应的软件实现，还可以通过软件和硬件结合的方式实现。该通信装置也可以是其他通信模块，用于实现本申请方法实施例中的方法。如图14所示，该通信装置1000可以包括收发模块1100和处理模块1200。可选的，还可以包括存储模块1300。
在一种可能的设计中，如图14中的处理模块和收发模块可能由一个或者多个处理器来实现，或者由一个或者多个处理器和存储器来实现；或者由一个或多个处理器和收发器实现；或者由一个或者多个处理器、存储器和收发器实现，本申请实施例对此不作限定。所述处理器、存储器、收发器可以单独设置，也可以集成。
可选的，本申请实施例中的通信装置1000中各个模块可以用于执行本申请中图7描述的方法700和本申请中描述的各个实施例及实施方式。该通信装置可以应用于上述方法实施例中描述的第一终端，或应用于上述方法实施例中描述的第二终端或第三终端。
在一些实施例中，处理模块1200用于在确定第一预留资源和第二预留资源有资源冲突，其中，所述第一预留资源为来自第二终端的侧行控制信息指示的预留资源，所述第二预留资源属于所述第一终端在至少一个时间单元上监听的来自一个或多个其他终端的侧行控制信息指示的至少一个预留资源，所述至少一个时间单元为所述第二终端未监听的时间单元。收发模块1100用于发送冲突指示信息，其中，所述冲突指示信息用于指示所述第一预留资源或所述第二预留资源上的资源冲突。
通信装置1000通过监听第二终端未监听的至少一个时间单元确定第二终端指示的第一预留资源与其他终端指示的第二预留资源有资源冲突，并发送冲突指示信息，可以改善第二终端无法侦听到这些未侦听时隙(例如第二终端处于发送状态的时隙)上的预留信息的问题，减少第二终端选择到的预留资源与其他终端预留的资源重叠的概率，可以增加传输可靠性进而降低系统中的干扰。
应理解，通信装置1000中的各模块实现本申请中实施例提供的方法的具体过程中涉及到的参数、方案细节、实施方式以及有益效果等均可参照上述方法实施例中的详细说明，为了简洁，在装置实施例部分不再赘述。
一些实施例中，通信装置1000中的处理模块1200可以根据收发模块1100检测到的来自一个或多个其他终端的SCI获知对应终端的预留资源。同理的，处理模块1200也可以根据收发模块1100接收到或检测到的来自第二终端的SCI获知第一预留资源。一般的，收发模块1100盲检测来自其他终端的SCI，SCI中会指示预留资源的时频位置和/或资源预留周期(Resource reservation period)。可选的，收发模块1100可以检测来自第二终端的SCI和通信范围内来自其他终端的SCI，上述SCI中指示的接收终端可以不是通信装置1000，通信装置1000中的处理模块1200通过对检测到的SCI进行译码获知第一预留资源和一个或多个其他终端的至少一个预留资源。
一些实施例中，通信装置1000也可以通过其他方式获知第一预留资源，例如收发模块1100可以接收来自第二终端的配置信令，该配置信令指示第二终端预留的资源，该预留的资源可以是用于向其他终端发送侧行数据。其中配置信令可以是配置信令可以为SCI、PC5-RRC信令或侧行媒体接入控制层控制单元(sidelink Media Access Control control element，SL MAC CE)等信令。
具体的，上述的第二终端未监听的时间单元可以为以下中的一种或多种的组合：第二终端处于发送状态的时间单元、处于所述第二终端的不连续接收DRX开启时间段的时间单元，和，第二终端在部分侦听模式确定的未监听时间单元。
可选的，通信装置1000仅监听(monitor)第二终端未监听的时间单元。也就是 说，通信装置1000只在第二终端未监听的至少一个时间单元上监听的来自一个或多个其他终端的侧行控制信息，而在其他不属于第二终端未监听的时间单元上不进行监听。
一种可选的实施方式中，处理模块1200用于确定第一预留资源和第二预留资源有资源冲突，包括：处理模块1200用于确定该第一预留资源与该第二预留资源在时域上有重叠(overlapping)。或者说此时处理模块1200用于将第一预留资源和第二预留资源在时域上重叠确定为第一预留资源和第二预留资源有资源冲突。一般的，终端指示的预留资源位于一个时间单元内，也就是说，第一预留资源与第二预留资源在时域上有重叠表示该第一预留资源与该第二预留资源位于相同的时间单元。若第一预留资源或第二预留资源包含多于一个时间单元，那么第一预留资源和第二预留资源占用的时间单元部分相同或全部相同都属于在时域上有重叠。
另一种可选的实施方式中，所述第二预留资源与所述第一预留资源有资源冲突，包括：所述第一预留资源与所述第二预留资源有时频重叠；和/或，所述第一预留资源与所述第二预留资源在时域上重叠并频域上不重叠，且所述第一预留资源和所述第二预留资源分别用于所述第二终端发送侧行信息和用于所述第二终端接收侧行信息；和/或，所述第一预留资源与所述第二预留资源在时域上重叠并频域上不重叠，且所述第一预留资源和所述第二预留资源分别用于第三终端发送侧行信息和用于所述第三终端接收侧行信息，其中所述第三终端为指示所述第二预留资源的侧行控制信息的发送终端。
在一些实施例中，处理模块1200还用于确定通信装置1000与第三终端之间的链路上的参考信号接收功率RSRP测量值高于第一门限；或，处理模块1200还用于确定通信装置1000与第三终端之间的链路上的RSRP测量值高于通信装置1000与第二终端之间的链路上的RSRP测量值。此时相当于收发模块1100是否发送冲突指示信息还要根据RSRP测量结果。例如收发模块1100用于在满足以下条件的情况下发送冲突指示信息：(1)第一预留资源与第二预留资源有资源冲突；(2)通信装置1000与第三终端之间的链路上的参考信号接收功率RSRP测量值高于第一门限，或，通信装置1000与第三终端之间的链路上的RSRP测量值高于通信装置1000与第二终端之间的链路上的RSRP测量值。
可选的，上述的条件(2)可以应用于一个系统中确定资源冲突的部分场景中。示例的，当资源冲突类型为时频资源重叠，且通信装置1000为第二预留资源对应的接收端时，收发模块1100用于在满足上述条件(1)和(2)的情况下发送冲突指示信息。在资源冲突类型为时频资源重叠，且通信装置1000不为第二预留资源对应的接收端时，通信装置1000仅考虑资源冲突，即收发模块1100用于在满足条件(1)的情况下发送冲突指示信息。另外当资源冲突类型为收发并存时，通信装置1000仅考虑时域重叠，即收发模块1100用于在处理模块1200确定第一预留资源与第二预留资源在时域上有重叠的情况下发送冲突指示信息。
在一些实施例中，收发模块1100用于发送冲突指示信息，可以包括：收发模块1100用于向第二终端发送冲突指示信息。或者收发模块1100用于向第三终端发送冲突指示信息，第三终端为指示第二预留资源的侧行控制信息SCI的发送终端。也就是说收发模块1100发送冲突指示信息的目的终端可以是第二终端或第三终端。在一种可 能的实施方式中，在第一预留资源对应的优先级值小于第二预留资源对应的优先级值的情况下，收发模块1100用于向第三终端发送所述冲突指示信息。并且在第二预留资源对应的优先级值小于第一预留资源对应的优先级值的情况下，收发模块1100用于向第二终端发送所述冲突指示信息。其中，第一预留资源对应的优先级值可以是由该第一预留资源相关的侧行控制信息指示的，第二预留资源对应的优先级值可以是由该第二预留资源相关的侧行控制信息指示的。这里仅作为示例，本申请实施例不排除其他获取预留资源对应的优先级值的方式。应理解，一般的优先级值越高表示优先级越低，相应的优先级越低表示优先级越高。
可选的，冲突指示信息用于指示第一预留资源是否存在资源冲突。也就是说，冲突指示信息指示第一预留资源存在资源冲突，或第一预留资源上不存在资源冲突。
可选的，冲突指示信息用于指示第一预留资源中存在资源冲突的一个或多个子信道。
可选的，冲突指示信息用于指示第一预留资源所在的时隙中存在资源冲突的一个或多个子信道。或者说冲突指示信息用于指示第一预留资源所在的时隙中每个子信道上是否存在资源冲突。
冲突指示信息还可以包括其他指示内容，具体的指示方式与上文方法实施例部分的描述相同，此处不再赘述。
在一种实施方式中，收发模块1100用于发送冲突指示信息，可以包括：收发模块1100用于在协作资源上发送所述冲突指示信息，协作资源为根据第二终端的发送资源确定的，或协作资源为根据第一预留资源确定的。其中协作资源可以理解为用于发送冲突指示信息的资源，参照上文中的描述，通信装置1000和第二终端可以是处于UE协作机制的终端对。协作资源的映射方式与上文方法实施例部分的描述相同，此处不再赘述。
在方法700中，第一终端发送冲突指示信息，可以包括：第一终端在协作资源上发送所述冲突指示信息，协作资源为根据第二终端的发送资源确定的，或协作资源为根据第一预留资源确定的。其中协作资源可以理解为用于发送冲突指示信息的资源，参照上文中的描述，第一终端和第二终端可以是处于UE协作机制的终端对，此时第一终端可以被称为第二终端的协作终端，第二终端可以被称为被协作终端。
通信装置1000也可以应用于上述方法实施例中描述的第二终端或第三终端，下面以应用于第二终端为例进行描述。在一些实施例中，收发模块1100用于接收来自第一终端的冲突指示信息，其中，所述冲突指示信息用于指示第一预留资源或第二预留资源上的资源冲突，所述第一预留资源为通信装置1000的预留资源，所述第二预留资源属于所述第一终端在至少一个时间单元上监听的来自一个或多个其他终端的侧行控制信息指示的至少一个预留资源，所述至少一个时间单元为所述第二终端未监听的时间单元。处理模块1200用于重选第一预留资源，或者处理模块1200用于丢弃第一预留资源，丢弃第一预留资源可以理解为不在第二预留资源上发送数据。可选的，处理模块1200也可以不用于重选或放弃第一预留资源，例如当处理模块1200根据冲突指示信息确定资源冲突为收发并存时，可以保留第一预留资源，并处理模块1200用于不接收第二预留资源上的侧行数据。或者，当处理模块1200根据冲突指示信息确定资源冲 突为收发并存时，处理模块1200用于接收第二预留资源上的侧行数据，并处理模块1200用于对第一预留资源进行重选。
应理解，通信装置1000中的各模块实现本申请中实施例提供的方法的具体过程中涉及到的参数、方案细节、实施方式以及有益效果等均可参照上述方法实施例中的详细说明，为了简洁，在部分不再赘述。
当通信装置1000为终端，或具备终端功能的组件时，收发模块1100可以对应于图16示出的终端2000中的收发器2100，处理模块1200可以对应于图16示出的终端2000中的基带处理器2400，存储模块1300可以对应于图16示出的终端2000中的存储器2300。当通信装置1000为应用于终端中的通信芯片时，通信装置1000可以对应于图16示出的基带处理器2400(或称为基带芯片)，此时收发模块1100可以为输入/输出接口，处理模块1200可以包括基带芯片中的一个或多个CPU处理器、数字信号处理器等，存储模块1300可以为基带芯片内的存储器或者为基带芯片外的存储器。
图15是本申请实施例提供的处理装置1200的结构示意图。如图所示，该处理装置1200包括处理模块1202和接口模块1201。可选的，该处理模块还可以包括存储模块1203。其中，处理模块1202、接口模块1201和存储模块1203之间互相耦合或连接，互相之间可以传递控制和/或数据信号，该存储模块1203用于存储计算机程序，该处理模块1202用于从该存储模块1203中调用并运行该计算机程序，以实现上述的方法500、600或700。应理解，图中所示的处理装置1200仅为示例。在具体实现时，该存储模块1203也可以集成在处理模块1202中，或者独立于处理模块1202。本申请对此不做限定。
图16是本申请实施例提供的终端2000的结构示意图。该终端能够执行本发明实施例提供的方法。如图所示，该终端2000包括收发器2100、应用处理器2200、存储器2300和基带处理器2400。
收发器2100可以调节(例如，模拟转换、滤波、放大和上变频等)该输出采样并生成上行链路信号，该上行链路信号经由天线发射给上述实施例中所述的基站。在下行链路上，天线接收接入网设备发射的下行链路信号。收发器2100可以调节(例如，滤波、放大、下变频以及数字化等)从天线接收的信号并提供输入采样。具体的收发器2100可以由射频芯片实现。
基带处理器2400也可以称为基带芯片，该基带处理器处理经数字化的收到信号以提取该信号中传达的信息或数据比特。在一个可能的设计中，基带处理器2400可包括编码器，调制器，解码器，解调器。编码器用于对待发送信号进行编码。例如，编码器可用于接收要在上行链路上发送的业务数据和/或信令消息，并对业务数据和信令消息进行处理(例如，格式化、编码、或交织等)。调制器用于对编码器的输出信号进行调制。例如，调制器可对编码器的输出信号(数据和/或信令)进行符号映射和/或调制等处理，并提供输出采样。解调器用于对输入信号进行解调处理。例如，解调器处理输入采样并提供符号估计。解码器用于对解调后的输入信号进行解码。例如，解码器对解调后的输入信号解交织、和/或解码等处理，并输出解码后的信号(数据和/或信令)。编码器、调制器、解调器和解码器可以由合成的调制解调处理器来实现。这些单元根据无线接入网采用的无线接入技术来进行处理。可选的，基带处理器2400中可 以包括存储器。
基带处理器2400可以从应用处理器2200接收可表示语音、数据或控制信息的数字化数据，并对这些数字化数据处理后以供传输。所属调制解调器处理器可以支持多种通信系统的多种无线通信协议中的一种或多种，例如LTE,新空口NR，通用移动通信系统(Universal Mobile Telecommunications System，UMTS)，高速分组接入(High Speed Packet Access，HSPA)等等。可选的，基带处理器2400中也可以包括一个或多个存储器。
可选的，该基带处理器2400和应用处理器2200可以是集成在一个处理器芯片中。
存储器2300用于存储用于支持所述终端设备通信的程序代码(有时也称为程序，指令，软件等)和/或数据。
需要说明的是，该存储器2300或基带处理器2400中的存储器可以包括一个或多个存储单元，例如，可以是基带处理器2400或应用处理器2200内部的存储单元，或者可以是与应用处理器2200或基带处理器2400独立的外部存储单元，或者还可以是包括应用处理器2200或基带处理器2400内部的存储单元以及与应用处理器2200或基带处理器2400独立的外部存储单元的部件。
基带处理器2400可以包括中央处理器(Central Processing Unit，CPU)，通用处理器，数字信号处理器(Digital Signal Processor，DSP)，专用集成电路(Application-Specific Integrated Circuit，ASIC)，现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件、其他集成电路、或者其任意组合。基带处理器2400可以实现或执行结合本发明实施例公开内容所描述的各种示例性的逻辑方框，模块和电路。基带处理器2400也可以是实现计算功能器件的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合或者片上系统(system-on-a-chip，SOC)等等。
应理解，图16所示的终端2000能够实现前述方法实施例中的各个过程。终端2000中的各个模块的操作或功能，分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述，为避免重复，此处适当省略详细描述。
本申请实施例还提供一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时可以实现上述方法实施例提供的方法。
本申请实施例还提供一种包含指令的计算机程序产品，该指令被执行时执行上述方法实施例中终端侧的方法。
应理解，本申请实施例中提及的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本申请实施例中提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器
(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、 可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器
(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)集成在处理器中。
应注意，本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设 备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (24)

  1. 一种通信方法，其特征在于，包括：
    第一终端确定第一预留资源和第二预留资源有资源冲突，其中，所述第一预留资源为来自第二终端的侧行控制信息指示的预留资源，所述第二预留资源属于所述第一终端在至少一个时隙上监听的来自一个或多个其他终端的侧行控制信息指示的至少一个预留资源，所述至少一个时隙为所述第二终端未监听的时隙；
    所述第一终端发送冲突指示信息，其中，所述冲突指示信息用于指示所述第一预留资源或所述第二预留资源上的资源冲突。
  2. 根据权利要求1所述的方法，其特征在于，所述第二终端未监听的时隙包括以下中的一种或多种的组合：所述第二终端处于发送状态的时隙、处于所述第二终端的不连续接收DRX开启时间段的时隙，和，所述第二终端在部分感知模式确定的非监听时隙。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第二预留资源与所述第一预留资源有资源冲突，包括：
    所述第一预留资源与所述第二预留资源有时频重叠；和/或，
    所述第一预留资源与所述第二预留资源在时域上重叠，且所述第一预留资源和所述第二预留资源分别用于所述第二终端发送侧行信息和用于所述第二终端接收侧行信息；和/或，
    所述第一预留资源与所述第二预留资源在时域上重叠，且所述第一预留资源和所述第二预留资源分别用于第三终端接收侧行信息和用于所述第三终端发送侧行信息，其中所述第三终端为指示所述第二预留资源的侧行控制信息的发送终端。
  4. 根据权利要求1或2所述的方法，其特征在于，所述第二预留资源与所述第一预留资源有资源冲突，为所述第一预留资源与所述第二预留资源在时域上重叠。
  5. 根据权利要求1～4任一项所述的方法，其特征在于，所述第一终端发送冲突指示信息，包括：
    所述第一终端向所述第二终端发送所述冲突指示信息；或，
    所述第一终端向第三终端发送所述冲突指示信息，所述第三终端为指示所述第二预留资源的侧行控制信息的发送终端。
  6. 根据权利要求1～4任一项所述的方法，其特征在于，所述第一终端发送冲突指示信息，包括：
    在所述第一预留资源对应的优先级值小于所述第二预留资源对应的优先级值的情况下，所述第一终端向第三终端发送所述冲突指示信息，所述第三终端为指示所述第二预留资源的侧行控制信息的发送终端；
    在所述第二预留资源对应的优先级值小于所述第一预留资源对应的优先级值的情况下，所述第一终端向所述第二终端发送所述冲突指示信息；
    其中，所述第一预留资源对应的优先级值是由所述第一预留资源相关的侧行控制信息指示的，所述第二预留资源对应的优先级值是由所述第二预留资源相关的侧行控制信息指示的。
  7. 根据权利要求1～6任一项所述的方法，其特征在于，所述第一终端发送冲突指示信息之前，所述方法还包括：
    所述第一终端确定与第三终端之间的链路上的参考信号接收功率RSRP测量值高于第一门限；或，
    所述第一终端确定所述第一终端与第三终端之间的链路上的RSRP测量值高于所述第一终端与所述第二终端之间的链路上的RSRP测量值。
  8. 根据权利要求1～7任一项所述的方法，其特征在于，所述冲突指示信息承载于包含一个或多个比特的字段，所述字段的不同取值分别用于指示以下信息中的一种：
    所述第一预留资源存在资源冲突；
    所述第一预留资源上不存在资源冲突。
  9. 根据权利要求1～7任一项所述的方法，其特征在于，所述冲突指示信息用于指示所述第一预留资源或所述第二预留资源上的资源冲突，包括：
    所述冲突指示信息用于指示所述第一预留资源中存在资源冲突的一个或多个子信道。
  10. 根据权利要求1～7任一项所述的方法，其特征在于，所述冲突指示信息用于指示所述第一预留资源或所述第二预留资源上的资源冲突，包括：
    所述冲突指示信息用于指示所述第一预留资源所在的时隙中存在资源冲突的一个或多个子信道。
  11. 根据权利要求1～10任一项所述的方法，其特征在于，所述第一终端发送冲突指示信息，包括：
    所述第一终端在协作资源上发送所述冲突指示信息，所述协作资源为根据所述第二终端的发送资源确定的，或所述协作资源为根据所述第一预留资源确定的。
  12. 一种通信装置，其特征在于，包括：
    处理模块，用于确定第一预留资源和第二预留资源有资源冲突，其中，所述第一预留资源为来自第二终端的侧行控制信息指示的预留资源，所述第二预留资源属于所述通信装置在至少一个时隙上监听的来自一个或多个其他终端的侧行控制信息指示的至少一个预留资源，所述至少一个时隙为所述第二终端未监听的时隙；
    收发模块，用于发送冲突指示信息，其中，所述冲突指示信息用于指示所述第一预留资源或所述第二预留资源上的资源冲突。
  13. 根据权利要求12所述的装置，其特征在于，所述第二终端未监听的时隙包括以下中的一种或多种的组合：所述第二终端处于发送状态的时隙、处于所述第二终端的不连续接收DRX开启时间段的时隙，和，所述第二终端在部分感知模式确定的非监听时隙。
  14. 根据权利要求12或13所述的装置，其特征在于，所述第二预留资源与所述第一预留资源有资源冲突，包括：
    所述第一预留资源与所述第二预留资源有时频重叠；和/或，
    所述第一预留资源与所述第二预留资源在时域上重叠并频域上不重叠，且所述第一预留资源和所述第二预留资源分别用于所述第二终端发送侧行信息和用于所述第二终端接收侧行信息；和/或，
    所述第一预留资源与所述第二预留资源在时域上重叠并频域上不重叠，且所述第一预留资源和所述第二预留资源分别用于第三终端发送侧行信息和用于所述第三终端接收侧行信息，其中所述第三终端为指示所述第二预留资源的侧行控制信息的发送终端。
  15. 根据权利要求12或13所述的装置，其特征在于，所述第二预留资源与所述第一预留资源有资源冲突，为所述第一预留资源与所述第二预留资源在时域上重叠。
  16. 根据权利要求12～15任一项所述的装置，其特征在于，所述收发模块用于向所述第二终端发送所述冲突指示信息；或，
    所述收发模块用于向第三终端发送所述冲突指示信息，所述第三终端为指示所述第二预留资源的侧行控制信息的发送终端。
  17. 根据权利要求12～15任一项所述的装置，其特征在于，所述收发模块用于在所述第一预留资源对应的优先级值小于所述第二预留资源对应的优先级值的情况下，向第三终端发送所述冲突指示信息，所述第三终端为指示所述第二预留资源的侧行控制信息的发送终端；
    所述收发模块用于在所述第二预留资源对应的优先级值小于所述第一预留资源对应的优先级值的情况下，向所述第二终端发送所述冲突指示信息；
    其中，所述第一预留资源对应的优先级值是由所述第一预留资源相关的侧行控制信息指示的，所述第二预留资源对应的优先级值是由所述第二预留资源相关的侧行控制信息指示的。
  18. 根据权利要求12～17任一项所述的装置，其特征在于，所述处理模块还用于确定与第三终端之间的链路上的参考信号接收功率RSRP测量值高于第一门限；或，
    所述处理模块还用于确定所述通信装置与第三终端之间的链路上的RSRP测量值高于所述通信装置与所述第二终端之间的链路上的RSRP测量值。
  19. 根据权利要求12～18任一项所述的装置，其特征在于，所述冲突指示信息承载于包含一个或多个比特的字段，所述字段的不同取值分别用于指示以下信息中的一种：
    所述第一预留资源存在资源冲突；
    所述第一预留资源上不存在资源冲突。
  20. 根据权利要求12～18任一项所述的装置，其特征在于，所述冲突指示信息用于指示所述第一预留资源或所述第二预留资源上的资源冲突，包括：
    所述冲突指示信息用于指示所述第一预留资源中存在资源冲突的一个或多个子信道。
  21. 根据权利要求12～18任一项所述的装置，其特征在于，所述冲突指示信息用于指示所述第一预留资源或所述第二预留资源上的资源冲突，包括：
    所述冲突指示信息用于指示所述第一预留资源所在的时隙中存在资源冲突的一个或多个子信道。
  22. 根据权利要求12～21任一项所述的装置，其特征在于，所述收发模块用于在协作资源上发送所述冲突指示信息，所述协作资源为根据所述第二终端的发送资源确定的，或所述协作资源为根据所述第一预留资源确定的。
  23. 一种计算机可读存储介质，其特征在于，包括指令，当所述指令在计算机上运行时，使得计算机执行如权利要求1至11任一项所述的方法。
  24. 一种计算机程序产品，包括计算机程序或指令，其特征在于，所述计算机程序或指令被计算机执行时使得所述计算机实现如权利要求1至11中任一项所述的方法。
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