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WO2022141104A1 - 资源选取方法、装置、设备及存储介质 - Google Patents

资源选取方法、装置、设备及存储介质 Download PDF

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Publication number
WO2022141104A1
WO2022141104A1 PCT/CN2020/141055 CN2020141055W WO2022141104A1 WO 2022141104 A1 WO2022141104 A1 WO 2022141104A1 CN 2020141055 W CN2020141055 W CN 2020141055W WO 2022141104 A1 WO2022141104 A1 WO 2022141104A1
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WIPO (PCT)
Prior art keywords
terminal device
data
resource selection
transmitted
resource
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Application number
PCT/CN2020/141055
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English (en)
French (fr)
Inventor
赵振山
张世昌
林晖闵
丁伊
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN202080107487.7A priority Critical patent/CN116508372A/zh
Priority to PCT/CN2020/141055 priority patent/WO2022141104A1/zh
Publication of WO2022141104A1 publication Critical patent/WO2022141104A1/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 embodiments of the present application relate to the field of wireless communication technologies, and in particular, to a resource selection method, apparatus, device, and storage medium.
  • D2D communication As a key technology for 5th generation mobile networks (5G), device-to-device (D2D) communication, including vehicle-to-vehicle (V2V) communication or vehicle-to-device (V2V) communication vehicle to everything, V2X) communication.
  • D2D communication introduces a sidelink (SL) transmission technology. Different from the traditional cellular system in which the communication data is received or transmitted through the base station, because the terminal-to-terminal direct communication method is adopted, it has higher spectral efficiency and lower transmission delay.
  • SL sidelink
  • the 3rd generation partnership project (3GPP) defines two transmission modes in the V2X technology: one is that the terminal transmits data on the sidelink according to the resources allocated by the base station, and the base station can assign the terminal to the terminal. Resources for a single transfer, or resources for a semi-static transfer. The other is that the terminal determines the candidate resource set according to the existing listening process, and then autonomously selects resources in the candidate resource set for sideline transmission.
  • Periodic services and aperiodic services are supported in NR-V2X.
  • aperiodic services the terminal cannot predict the arrival time of the service.
  • the terminal For terminals with energy-saving requirements, such as handheld terminals, in order to reduce energy consumption, the terminal is not always in the listening state. Therefore, when aperiodic services arrive at a certain time, the terminal does not have the listening results before that time.
  • the resources selected by the terminal of the aperiodic service conflict with each other.
  • Embodiments of the present application provide a resource selection method, apparatus, device, and storage medium, which reduce the probability of resource conflict and improve data transmission performance.
  • an embodiment of the present application provides a resource selection method, the method includes: a terminal device obtains first information, where the first information is used to indicate a data transmission state of the terminal device; Whether the first information satisfies the first condition determines the resource selection method.
  • an embodiment of the present application provides a resource selection device, the device includes: an acquisition module and a determination module.
  • the acquiring module is used to acquire first information, where the first information is used to indicate the data transmission state of the terminal device; the determining module is used to determine the resource selection method according to whether the first information satisfies the first condition .
  • an embodiment of the present application provides an electronic device, including: a memory and a processor, where the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that all The processor executes the computer program to execute the method described in any one of the first aspects of the present application.
  • an embodiment of the present application provides a computer storage medium for storing a computer program, and when the computer program runs on a computer, the computer enables the computer to execute the method described in any one of the first aspect of the present application .
  • an embodiment of the present application provides a computer program, which, when executed by a processor, is used to execute the method described in any one of the first aspect of the present application.
  • an embodiment of the present application provides a computer program product that, when the computer program product runs on a computer, causes the computer to execute the method described in any one of the first aspect of the present application.
  • an embodiment of the present application provides a chip, including: a processing module and a communication interface, the processing module is configured to call and run a computer program stored in the memory from a memory, and execute any of the first aspects of the present application. one of the methods described.
  • Embodiments of the present application provide a resource selection method, apparatus, device, and storage medium, which are used to improve data transmission performance.
  • the terminal device determines the priority of the data to be transmitted, the delay requirement, the number of transmissions or the number of retransmissions and other transmission parameters, or determines whether the sideline feedback of the terminal device is activated, based on the transmission parameters of the data to be transmitted, whether the sideline feedback is activated, etc.
  • the factors determine the resource selection method used.
  • the resource selection method includes a first resource selection method and a second resource selection method.
  • the first resource selection method is that the terminal device determines a resource selection window after the current moment, and randomly selects transmission resources from the resource selection window; the second resource selection method It is that the terminal device determines the candidate resource set according to the listening result of the preset period after the current time, and randomly selects the transmission resource from the candidate resource set. Before using the randomly selected resources to transmit data, re-evaluation or resource pre-emption detection can also be performed, thereby reducing resource conflicts with other terminals and improving data transmission performance.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • FIG. 4 is a resource schematic diagram 1 of selecting a resource provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a physical sideline feedback channel PSFCH resource provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a resource selection method provided by an embodiment of the present application.
  • FIG. 7 is a second schematic diagram of resources for selecting resources provided by an embodiment of the present application.
  • FIG. 8 is a third schematic diagram of resources for selecting resources provided by an embodiment of the present application.
  • FIG. 9 is a fourth schematic diagram of resources for selecting resources provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram five of resources for selecting resources provided by the embodiment of the present application.
  • FIG. 11 is a schematic diagram 6 of resources for selecting resources provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram seven of resources for selecting resources provided by an embodiment of the present application.
  • FIG. 13 is a schematic diagram eight of resources for selecting resources provided by an embodiment of the present application.
  • FIG. 14 is a schematic structural diagram of a resource selection apparatus provided by an embodiment of the present application.
  • FIG. 15 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application.
  • the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or an associated relationship.
  • a indicates B it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • corresponding may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or indicate and be instructed, configure and be instructed configuration, etc.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • the communication system shown in FIG. 1 includes a network device 101 and two terminal devices, which are terminal devices 102 and 103 respectively. Both the terminal device 102 and the terminal device 103 are within the coverage of the network device 101 .
  • the network device 101 is connected in communication with the terminal device 102 and the terminal device 103 respectively, and the terminal device 102 is connected in communication with the terminal device 103 .
  • the terminal device 102 may send a communication message to the terminal device 103 through the network device 101 , and the terminal device 102 may also directly send a communication message to the terminal device 103 .
  • the link for direct communication between the terminal device 102 and the terminal device 103 is called a D2D link, and may also be called a proximity service (proximity service, ProSe) link, a side link, and the like. Transmission resources on the D2D link may be allocated by network equipment.
  • a proximity service proximity service, ProSe
  • Transmission resources on the D2D link may be allocated by network equipment.
  • FIG. 2 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • the communication system shown in FIG. 2 also includes one network device 101 and two terminal devices.
  • the difference from FIG. 1 is that the terminal device 103 is within the coverage of the network device 101 , and the terminal device 104 is outside the coverage of the network device 101 .
  • the network device 101 is connected in communication with the terminal device 103
  • the terminal device 103 is connected in communication with the terminal device 104 .
  • the terminal device 103 may receive the configuration information sent by the network device 101, and perform sideline communication according to the configuration information. Since the terminal device 104 cannot receive the configuration information sent by the network device 101, the terminal device 104 can, according to the pre-configuration information and the information carried in the Physical Sidelink Broadcast Channel (PSBCH) sent by the terminal device 103, sideline communication.
  • PSBCH Physical Sidelink Broadcast Channel
  • FIG. 3 is a schematic diagram of an application scenario provided by an embodiment of the present application. Both the terminal device 104 and the terminal device 105 shown in FIG. 3 are outside the coverage of the network device 101 . Both the terminal device 104 and the terminal device 105 can determine the sideline configuration according to the pre-configuration information, and perform sideline communication.
  • Two transmission modes are defined in the 3GPP protocol: the first transmission mode and the second transmission mode.
  • the first transmission mode the transmission resources of the terminal equipment are allocated by the base station, and the terminal equipment performs data transmission on the sidelink according to the resources allocated by the base station.
  • the base station can allocate resources for a single transmission to the terminal equipment, and can also allocate resources for semi-static transmission to the terminal equipment.
  • the first transmission mode includes transmission mode 3 in LTE-V2X, or transmission mode 1 in NR-V2X.
  • the terminal device 102 is located within the coverage area of the network device 101 , and the network device 101 allocates transmission resources for sideline transmission to the terminal device 102 .
  • the second transmission mode (1) If the terminal device has the interception capability, it can transmit data by means of interception and reservation. Specifically, the terminal device may acquire an available resource set in a network configuration or a preconfigured resource pool by means of listening, and randomly select a resource from the available resource set for data transmission. Because the services in the vehicle network system have periodic characteristics, the terminal equipment usually adopts the semi-static transmission method, that is, after the terminal equipment selects a transmission resource, it will continue to use the resource in multiple transmission cycles, thereby reducing resource reselection. and the probability of resource conflicts.
  • the terminal device will carry the information of reserving resources for the next transmission in the control information of this transmission, so that other terminal devices can judge whether this resource is reserved and used by the terminal device by detecting the control information of the terminal device, so as to reduce the The purpose of resource conflict.
  • the terminal device does not have the ability to listen, it can directly select transmission resources from the resource pool at random.
  • the second transmission mode includes transmission mode 4 in LTE-V2X, or transmission mode 2 in NR-V2X.
  • the terminal device 102 shown in FIG. 1 may autonomously select transmission resources from the resource pool configured by the network to perform sideline transmission.
  • the terminal devices 104 and 105 shown in FIG. 3 are both located outside the coverage of the network device 101, and the terminal devices 104 and 105 can autonomously select transmission resources from the preconfigured resource pool for sideline transmission.
  • resource selection can be performed according to the listening result. Specifically, when new data arrives at time n, the terminal device may select resources within the resource selection window according to the listening result of the preset period before time n.
  • FIG. 4 is a schematic diagram 1 of resources for selecting resources provided by this embodiment of the present application.
  • T 1 ⁇ T proc,1 , T proc,1 is determined according to the processing capability of the terminal device, T 2min ⁇ T 2 ⁇ remaining PDB (packet delay budget, data delay), T 2min is determined according to the configuration parameters, PDB Determined according to the delay of the data to be transmitted, eg.
  • the process for the terminal device to select resources in the resource selection window [n+T 1 , n+T 2 ] includes:
  • Step 1 The terminal device uses all available resources in the resource selection window as a set A;
  • Step 1 If some time slots in the listening window of the terminal device do not have a listening result due to the half-duplex problem, the resources on the time slots corresponding to these time slots in the resource selection window are excluded.
  • Step 2 if the terminal equipment detects the PSCCH in the listening window, measure the reference signal received power (Reference Signal Received Power, RSRP) of the PSCCH, or measure the RSRP of the PSSCH scheduled by the PSCCH, if the measured RSRP is greater than the RSRP threshold , and there is a resource conflict between the reserved transmission resource carried in the SCI of the PSCCH/PSSCH and the sideline data to be transmitted by the terminal device, the terminal device excludes the resource from the set A.
  • the selection of the PSSCH-RSRP threshold is determined by the priority information carried in the detected PSCCH and the priority of the data to be transmitted by the terminal device.
  • Step 3 If the number of remaining resources in set A is less than X% of the total number of resources, the terminal device will increase the RSRP threshold by 3dB, and repeat the above steps until the number of remaining resources in set A is greater than the total number of resources. X%.
  • Step 4 The terminal device reports the determined set A, that is, the candidate resource set (or available resource set) to the upper layer, and the higher layer randomly selects transmission resources from the candidate resource set reported by the physical layer for sideline transmission.
  • the terminal device involved in the embodiments of this application may also be referred to as a terminal, which may be a device with a wireless transceiver function, which may be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it may also be deployed on water (such as ships, etc.); can also be deployed in the air (such as on airplanes, balloons, satellites, etc.).
  • the terminal device may be a user equipment (user equipment, UE), wherein the UE includes a handheld device, a vehicle-mounted device, a wearable device or a computing device with a wireless communication function.
  • the UE may be a mobile phone, a tablet computer, or a computer with a wireless transceiver function.
  • the terminal device may also be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, intelligent Wireless terminals in power grids, wireless terminals in smart cities, wireless terminals in smart homes, and so on.
  • the device for realizing the function of the terminal may be a terminal; it may also be a device capable of supporting the terminal to realize the function, such as a chip system, and the device may be installed in the terminal.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the network device involved in the embodiments of the present application includes a base station (base station, BS), which may be a device deployed in a wireless access network and capable of wirelessly communicating with a terminal.
  • the base station may have various forms, such as a macro base station, a micro base station, a relay station, and an access point.
  • the base station involved in the embodiment of the present application may be a base station in 5G or a base station in LTE, where the base station in 5G may also be called a transmission reception point (transmission reception point, TRP) or gNB.
  • the apparatus for implementing the function of the network device may be a network device; it may also be an apparatus capable of supporting the network device to implement the function, such as a chip system, and the apparatus may be installed in the network device.
  • the technical solutions of the embodiments of the present application are mainly applied to communication systems based on New Radio (NR) technology, such as 5G communication systems, NR-V2X, NR-V2V communication systems, and the like. It can also be applied to other communication systems, as long as there is resource scheduling between entities in the communication system, for example, it can be applied to resource scheduling between network equipment and terminal equipment, or resource scheduling between two terminal equipment, One of the terminal devices assumes the function of accessing the network, etc.
  • NR New Radio
  • X can generally refer to any device with wireless reception and transmission capabilities, including but not limited to slow-moving wireless devices, fast-moving vehicle-mounted devices, and network control nodes with wireless transmission and reception capabilities.
  • NR-V2X communication supports unicast, multicast, and broadcast transmission methods. For unicast transmission, the sending terminal sends data, and there is only one receiving terminal. For multicast transmission, the sending terminal sends data, and the receiving terminal is all terminals in a communication group, or all terminals within a certain transmission distance. For broadcast transmission, the sending terminal sends data, and the receiving terminal is any terminal around the sending terminal.
  • NR-V2X communication needs to support autonomous driving, so it puts forward higher requirements for data interaction between vehicles, such as higher throughput, lower latency, higher reliability, larger coverage, and more flexibility resource allocation, etc.
  • PSFCH Physical Sidelink Feedback Channel
  • the sending terminal For unicast transmission, the sending terminal sends sidelink data to the receiving terminal, including the Physical Sidelink Control Channel (PSCCH) and the Physical Sidelink Shared Channel (PSSCH), and the receiving terminal sends the data to the sending terminal.
  • Hybrid Automatic Repeat Request (HARQ) feedback information the sending terminal determines whether data retransmission is required according to the feedback information of the receiving terminal. Wherein, the feedback information of HARQ is carried in the PSFCH.
  • End devices can activate or deactivate sideline feedback. If sideline feedback is activated, the receiving terminal receives the sideline data sent by the sending terminal, and needs to feed back HARQ ACK/NACK (acknowledgement/non-acknowledgement) to the sending terminal according to the detection result, and the sending terminal decides to send retransmission data according to the feedback information of the receiving terminal or new data. If the sideline feedback is deactivated, the receiving terminal does not need to send feedback information, and the sending terminal usually sends data in a blind retransmission manner, for example, the sending terminal repeatedly sends a preset number of retransmissions for each sideline data.
  • HARQ ACK/NACK acknowledgement/non-acknowledgement
  • Mode 1 The terminal within a certain distance receives the sideline data of the transmitting terminal. If the detection result is NACK, the sideline feedback needs to be sent; if the detection result is ACK, the sideline feedback does not need to be sent. Terminals outside this distance range do not need to send sideline feedback no matter what the detection result is.
  • Mode 2 For a communication group, all receiving terminals need to send sideline feedback.
  • a communication group includes P terminals. When one terminal acts as a sending terminal to send sideline data, the other P-1 terminals all need to send sideline feedback information.
  • the cycle of the sideline feedback resources can be defined, for example, the cycle is N time slots, and N is 1, 2, 4, etc.
  • the parameter N can be pre-configured or configured by the network.
  • FIG. 5 is a schematic diagram of a PSFCH resource of a physical sideline feedback channel provided by an embodiment of the present application.
  • the period of the PSFCH is 4 time slots.
  • the feedback information of PSSCH transmitted in time slots 2, 3, 4, and 5 is all transmitted in time slot 7. Therefore, time slots 2, 3, 4, and 5 can be regarded as a time slot set.
  • the PSSCH transmitted in the corresponding PSFCH is in the same time slot (time slot 7).
  • GP (Guard Period) in Figure 5 is a guard interval.
  • the transmitting terminal transmits PSSCH/PSCCH in time slot n, and the receiving terminal transmits PSFCH in the first available time slot after time slot n+k, where k is a configuration parameter, for example, k is 2 or 3.
  • the first available time slot can be understood as the first time slot including the PSFCH resource after time slot n+k. Taking Figure 5 as an example, assuming that k is 2, the transmitting terminal sends PSSCH/PSCCH in time slot 4, and the receiving terminal In the first available slot after slot 6 (4+2), ie slot 7, the PSFCH is transmitted.
  • NR-V2X communication supports both periodic services and aperiodic services (or called burst services).
  • periodic services the arrival time of the service has a relatively fixed period, and the terminal can predict the arrival time of the service.
  • aperiodic services the arrival time of the service is uncertain, and the terminal cannot predict the arrival time of the service.
  • the terminal is not always in a listening state, but can only listen to a part of resources, so as to achieve the purpose of energy saving. Therefore, when an aperiodic service arrives at time n, the terminal does not have the listening result before time n, and how the terminal selects resources at this time is an urgent problem to be solved at present.
  • the first resource selection method when data arrives at time n, the terminal randomly selects transmission resources in the resource selection window after time n.
  • Second resource selection method when data arrives at time n, the terminal first listens, listens to a preset period, such as A timeslots, and randomly selects transmission resources from the candidate resource set according to the listening results of the preset period.
  • a preset period such as A timeslots
  • the terminal device can select transmission resources through any of the above resource selection methods, and send data on the selected resources. However, it is possible that two terminal equipments have selected the same transmission resource, and in this case, resource conflict will occur, which reduces the performance of the communication system.
  • the terminal device needs to determine whether there is a resource conflict with other terminals by listening. If there is no resource conflict, it can continue to use the selected transmission resource. If there is a resource conflict, it needs to Perform resource reselection.
  • the terminal device may determine the transmission parameters of the sideline data to be transmitted (such as the priority of the sideline data, the delay requirement, the number of transmissions or the number of retransmissions, etc.), or determine Factors such as whether the sideline feedback of the terminal device is activated determine whether to use the first resource selection method or the second resource selection method for resource selection.
  • FIG. 6 is a schematic flowchart of a resource selection method provided by an embodiment of the present application. As shown in FIG. 6 , the resource selection method provided by this embodiment includes the following steps:
  • Step 201 The terminal device acquires first information, where the first information is used to indicate the data transmission state of the terminal device.
  • the first information includes at least one of the priority of the data (or service) to be transmitted by the terminal device, the number of transmissions, the number of retransmissions, and the delay.
  • the data to be transmitted may be sideline data to be transmitted.
  • the first information is used to indicate whether the sideline feedback of the terminal device is activated.
  • the terminal device in addition to acquiring the first information, the terminal device also needs to acquire configuration information, and the acquired configuration information may be pre-configured or network-configured information.
  • the pre-configured information can be understood as configuration information that is fixed on the terminal device when the terminal device leaves the factory.
  • the terminal device obtains configuration information from a higher layer, and the configuration information may be pre-configured information used to instruct the terminal device to transmit various types of threshold parameters of data (for example, sideline data), or to instruct the terminal device Whether sideline feedback is activated.
  • the configuration information may be pre-configured information used to instruct the terminal device to transmit various types of threshold parameters of data (for example, sideline data), or to instruct the terminal device Whether sideline feedback is activated.
  • the terminal device receives configuration information sent by the network device, and the configuration information is used to indicate various types of threshold parameters for the terminal device to transmit data (for example, sideline data), or to indicate whether the sideline feedback of the terminal device is activation.
  • the configuration information is used to indicate various types of threshold parameters for the terminal device to transmit data (for example, sideline data), or to indicate whether the sideline feedback of the terminal device is activation.
  • the configuration information includes at least one item of priority threshold, transmission times threshold, retransmission times threshold, and delay threshold.
  • Step 202 The terminal device determines a resource selection mode according to whether the first information satisfies the first condition.
  • the resource selection method includes a first resource selection method or a second resource selection method.
  • the first resource selection manner is that the terminal device determines a resource selection window after the current moment, and randomly selects transmission resources from the resource selection window.
  • the second resource selection manner is that the terminal device determines a candidate resource set according to a listening result of a preset period after the current moment, and randomly selects a transmission resource from the candidate resource set.
  • the terminal device randomly selects transmission resources by using the first resource selection method or the second resource selection method, and before using the randomly selected transmission resources to transmit data, the terminal device also needs to perform re-evaluation (re-evaluation). evaluation) or resource pre-emption detection.
  • the above-mentioned current time includes at least one of the following: the time when the data arrives, the time when the resource selection is performed, the time when the resource reselection is performed, or the time when the upper layer requests the terminal device to determine the candidate resource set for selecting the sideline transmission resource.
  • the first information acquired by the terminal device includes the priority of the data to be transmitted by the terminal device, and the terminal device determines the resource selection method according to whether the first information satisfies the first condition, including: The priority of the data to be transmitted and the priority threshold determine the resource selection method.
  • the terminal device determines to use the first resource selection method. If the priority value of the data to be transmitted by the terminal device is greater than or equal to the priority threshold, the terminal device determines to use the second resource selection method.
  • the priority refers to the priority of the data to be transmitted by the terminal device, for example, the priority of the sideline data or the service to be transmitted by the terminal device.
  • the priority is the priority carried in the sidelink control information (Sidelink Control Information, SCI) corresponding to the PSSCH carrying the sideline data when the terminal device sends sideline data to other terminal devices.
  • SCI Sidelink Control Information
  • the priority of the data to be transmitted can be represented by the priority value.
  • the priority value is 0-7, and the priority value is 0, which indicates that the data to be transmitted has the highest priority.
  • the terminal may determine the resource selection method according to the priority of the sideline data to be transmitted.
  • the terminal device may use the first resource selection method to select resources, that is, the terminal device randomly selects resources within the resource selection window. Before using the selected transmission resource for data transmission, the terminal device listens to determine whether the selected resource is available.
  • the terminal device can use the second resource selection method to select resources, that is, the terminal device determines the candidate resource set according to the listening result of the preset time period after the current moment, and randomly selects from the candidate resource set transfer resources. Before using the selected transmission resource for data transmission, the terminal device listens to determine whether the selected resource is available.
  • FIG. 7 is a second schematic diagram of resources for selecting resources provided by an embodiment of the present application. As shown in FIG. 7 , assuming that resource x is located in time slot m, the SCI in resource w has indicated resource x, and the SCI in resource x is about to indicate resource y and resource y. z.
  • the terminal device needs to perform re-evaluation detection to determine whether resources y and z are available. Specifically, the terminal device performs re-evaluation detection at time slot mT 3 , and the corresponding listening window [n+1, mT 3 -T proc, 0 ) at time mT 3 starts from the next time slot at time n. listen. The terminal device determines whether the resources y and z are available according to the listening results in the listening window. If the priority of the data to be transmitted by the terminal device is high, the resources y and z selected by the terminal device are not easily excluded, that is, in the candidate resource set.
  • T proc,0 and T 3 are both determined according to the processing capability of the terminal device. The stronger the processing capability of the terminal device, the smaller the T proc,0 and T 3 are.
  • the terminal device may also perform pre-emption detection, that is, resource preemption detection.
  • pre-emption detection that is, resource preemption detection.
  • the terminal After completing the resource selection, the terminal continues to listen to the SCI. If the time-frequency resource that has been selected and indicated by sending the SCI meets the following three conditions, the terminal triggers resource reselection:
  • the RSRP of the PSCCH corresponding to the sensed SCI or the RSRP of the PSSCH scheduled by the PSCCH is greater than the SL RSRP threshold;
  • the priority of the detected data or service carried in the SCI is higher than the priority of the data to be transmitted by the terminal.
  • pre-emption detection needs to be performed before using resource x for transmission.
  • the terminal device will, according to the listening results for a period of time before mT 3 , such as the listening results in [n+1, mT 3 -T proc, 0 ) as shown in FIG.
  • a candidate resource set is determined within mT 3 +T 1 , mT 3 +T 2 ], if the resource x is not in the candidate resource set and the above three conditions are met, the terminal device needs to perform resource reselection to replace the resource x; otherwise , the terminal device can use the resource x for sideline transmission.
  • FIG. 8 is a schematic diagram 3 of resources for selecting resources provided by an embodiment of the present application.
  • the terminal device needs to perform pre-emption detection to determine the resource y. z is available. Specifically, the terminal device performs pre-emption detection at time slot pT 3 , and the corresponding listening window [n+1, pT 3 -T proc, 0 ) at time pT 3 starts from the next time slot at time n. Listening, and determining whether resources y and z are available according to the listening results, the specific process is the same as the process of determining whether x is available above, and will not be repeated here.
  • the listening window may be [pT 3 -T proc,0 -W, pT 3 -T proc,0 ), that is, the terminal device can be based on the end position of the listening window and the The length W determines the starting position of the listening window.
  • the length W of the listening window can be determined according to the time interval between the two transmission resources indicated by the SCI.
  • the SCI indicates three transmission resources of x, y, and z.
  • the length W of W may be determined according to the time interval between the first transmission resource x and the last transmission resource z, for example, W is 32 time slots.
  • the starting position of the listening window may also be the maximum value among n+1 and pT 3 -T proc,0 -W, expressed as max(n+1, pT 3 -T proc,0 -W).
  • the terminal device determines a candidate resource set within the resource selection window [pT 3 +T 1 , pT 3 +T 2 ] according to the listening result for a period of time before time pT3 , and then determines whether the resource y selected at time n is available.
  • FIG. 9 is a schematic diagram 4 of resources for selecting resources provided by an embodiment of the present application.
  • the second resource selection method is used to select resources, that is, after time n, the terminal device listens first, for example, the listening window is [n+1, n+A), where A is a preconfigured or network configuration parameter.
  • the terminal device selects resources x, y, z in the time slot after n+A according to the listening result.
  • the process of performing re-evaluation and pre-emption detection by the terminal refers to the description in the embodiment of FIG. 7 or FIG. 8 , and details are not repeated here.
  • the resource selection method is determined according to the priority of the sideline data to be transmitted by the terminal.
  • the terminal transmitting high-priority sideline data can use the first resource selection method to select resources, and the selected resources are not easily preempted by other terminals, which can be avoided. Frequent resource re-selection to improve the efficiency of resource selection.
  • the first information acquired by the terminal device includes the transmission times of data to be transmitted by the terminal device, and the terminal device determines a resource selection method according to whether the first information satisfies the first condition, including: The transmission times of the data to be transmitted by the device and the transmission times threshold determine the resource selection method.
  • the transmission times of the data to be transmitted by the terminal device is greater than the transmission times threshold, it is determined to adopt the first resource selection method. If the transmission times of the data to be transmitted by the terminal device is less than or equal to the transmission times threshold, it is determined to adopt the second resource selection method.
  • the terminal device before determining the resource selection method according to the number of transmissions of the sideline data to be transmitted by the terminal device and the threshold of the number of transmissions, the terminal device can determine the number of transmissions of the sideline data to be transmitted in the following manner.
  • the terminal device determines the number of transmission times of the sideline data to be transmitted according to pre-configuration information or network configuration information. That is, the number of transmission times of the sideline data to be transmitted by the terminal device is pre-configured, or configured by the network device.
  • the number of transmissions N of a sideline data can be 1, 2, 4, 8, 16 or 32 through pre-configuration or network configuration, that is, a sideline data block can be transmitted 1 to 32 times.
  • the terminal needs to select transmission resources of N time slots for data transmission.
  • the terminal device determines the transmission times of the sideline data to be transmitted according to the priority of the sideline data to be transmitted.
  • the pre-configured information or network configuration information includes the corresponding relationship between the priority of the sideline data to be transmitted and the number of transmissions, the terminal device according to the priority of the sideline data to be transmitted, and the priority of the sideline data to be transmitted. The corresponding relationship with the transmission times determines the transmission times of the sideline data to be transmitted.
  • the terminal may determine the resource selection manner according to the number of transmissions of the sideline data to be transmitted.
  • the terminal device can use the second resource selection method to select resources, that is, the terminal device determines the candidate resource set according to the listening results of the preset time period after the current moment, and randomly selects from the candidate resource set. transfer resources.
  • the terminal device listens to determine whether the selected resource is available. For example, the terminal device performs re-evaluation or pre-emption detection before using transmission resources for data transmission. Specifically, for the process of performing re-evaluation and pre-emption detection by the terminal, reference may be made to the description in the foregoing embodiment, and details are not described herein again.
  • the terminal can use the first resource selection method to select resources, that is, the terminal equipment is in the resource selection mode. Randomly select resources in the selection window.
  • the terminal device listens to determine whether the selected resource is available. For example, the terminal device performs re-evaluation or pre-emption detection before using the transmission resource for data transmission. Specifically, for the process of performing re-evaluation and pre-emption detection by the terminal, reference may be made to the description in the foregoing embodiment, and details are not described herein again.
  • FIG. 10 is a schematic diagram 5 of resources for selecting resources provided by this embodiment of the present application.
  • time slot n sideline data arrives, and the delay of the sideline data is 20ms, which corresponds to 20 time slots. It is assumed that sideline data The number of times of transmission is 16 times.
  • the terminal device should use the first resource selection method to select resources, that is, randomly select resources on 16 time slots in the resource selection window, including resources x, y, z in Figure 10. .
  • the terminal device Before using resources x, y, z, the terminal device needs to perform re-evaluation or pre-emption detection to determine whether the selected resources x, y, z have resource conflicts, and if there is a resource conflict, perform resource reselection.
  • the terminal device uses the second resource selection method to select resources, the terminal device must first perform resource listening after time slot n, and the terminal device can listen to four time slots at most. As a result of listening, select transmission resources in the remaining 16 time slots. Since there are only 16 remaining time slots, the terminal device needs to select a transmission resource in each of the remaining time slots, which will lead to The probability of resource conflict with other terminal equipment increases, reducing transmission performance.
  • FIG. 11 is a schematic diagram 6 of resources for selecting resources provided by this embodiment of the present application.
  • the terminal device can use the second resource selection method to select resources, that is, to perform resource selection first. Listening, as shown in Figure 11, listens to 8 time slots after time slot n, and then selects transmission resources on 4 time slots in the remaining 12 time slots, due to the number of remaining time slots It is far greater than the required number of transmissions. Therefore, the probability of resource conflict between the terminal device and other terminal devices is low, and the transmission resources selected according to the listening result can also achieve the goal of reducing transmission conflicts with other terminal devices.
  • the resource selection method is determined according to the transmission times of the sideline data to be transmitted by the terminal equipment.
  • the terminal with many transmission times can use the first resource selection method to select resources, and select the required time slot in the time slot within the time delay range. It is possible to avoid the problem that the number of available time slots is reduced due to the resource listening first, and the probability of collision with other terminals is increased.
  • the first information acquired by the terminal device includes the number of retransmissions of data to be transmitted by the terminal device, and the terminal device determines a resource selection method according to whether the first information satisfies the first condition, including: The number of retransmissions of the data to be transmitted by the device and the threshold of the number of retransmissions determine the resource selection method.
  • the terminal device determines whether the number of retransmissions of the data to be transmitted by the terminal device is greater than the threshold of the number of retransmissions. If the number of retransmissions of the data to be transmitted by the terminal device is less than or equal to the threshold of the number of retransmissions, it is determined to adopt the second resource selection method.
  • the terminal device needs to determine the number of retransmissions of the sideline data to be transmitted before determining the resource selection method according to the number of retransmissions of the sideline data to be transmitted by the terminal device and the threshold of the number of retransmissions.
  • the number of retransmissions the number of transmissions - 1.
  • the terminal may determine the resource selection manner according to the number of retransmissions of the sideline data.
  • the terminal device can use the second resource selection method to select resources, that is, the terminal device determines the candidate resource set according to the listening result of the preset time period after the current time, and randomly selects the resource from the candidate resource set. Select a transport resource.
  • the terminal device listens to determine whether the selected resource is available. For example, the terminal device performs re-evaluation or pre-emption detection before using transmission resources for data transmission. Specifically, for the process of performing re-evaluation and pre-emption detection by the terminal, reference may be made to the description in the foregoing embodiment, and details are not described herein again.
  • the terminal can use the first resource selection method to select resources, that is, the terminal equipment is in the Resources are randomly selected in the resource selection window.
  • the terminal device listens to determine whether the selected resource is available. For example, the terminal device performs re-evaluation or pre-emption detection before using the transmission resource for data transmission. Specifically, for the process of performing re-evaluation and pre-emption detection by the terminal, reference may be made to the description in the foregoing embodiment, and details are not described herein again.
  • the resource selection method is determined according to the number of retransmissions of the sideline data to be transmitted by the terminal equipment.
  • the terminal with a large number of retransmissions can use the first resource selection method to select resources, and select the required resources in the time slot within the delay range.
  • the number of time slots for data transmission can avoid the problem that the number of available time slots is reduced due to the resource listening first, and the probability of collision with other terminals is increased.
  • the first information acquired by the terminal device includes the time delay of the data to be transmitted by the terminal device, and the terminal device determines the resource selection method according to whether the first information satisfies the first condition, including: The time delay of the data to be transmitted and the time delay threshold determine the resource selection method.
  • the delay threshold determines whether the delay of the data to be transmitted by the terminal device is less than the delay threshold. If the delay of the data to be transmitted by the terminal device is greater than or equal to the delay threshold, it is determined to adopt the second resource selection method.
  • the terminal may determine the resource selection method according to the delay of the sideline data to be transmitted.
  • the terminal device may use the first resource selection method to select resources, that is, the terminal device randomly selects resources within the resource selection window. Before using the selected transmission resource for data transmission, the terminal device listens to determine whether the selected resource is available. For example, the terminal device performs re-evaluation or pre-emption detection before using transmission resources for data transmission. Specifically, for the process of performing re-evaluation and pre-emption detection by the terminal, reference may be made to the description in the foregoing embodiment, and details are not described herein again.
  • the terminal device can use the second resource selection method to select resources, that is, the terminal device determines the candidate resource set according to the listening result of the preset time period after the current moment, from Transmission resources are randomly selected from the candidate resource set. Before using the selected transmission resource for data transmission, the terminal device listens to determine whether the selected resource is available. For example, the terminal device performs re-evaluation or pre-emption detection before using transmission resources for data transmission. Specifically, for the process of performing re-evaluation and pre-emption detection by the terminal, reference may be made to the description in the foregoing embodiment, and details are not described herein again.
  • the terminal device can use the first resource selection method to randomly select the resources in the resource selection window corresponding to the time slot n. Select a resource and perform re-evaluation or pre-emption detection to determine whether the resource is available before using the resource. It should be noted that, if the terminal device uses the second resource selection method to select resources at this time, the number of selectable resources will be small, which increases the probability of resource conflict. For example, when sideline data arrives in time slot n, the terminal device listens from time slot n+1 to time slot n+6. At this time, the resource selection window corresponds to time slot n+7 to time slot n+10, that is, 4 There are only a few time slots, resulting in very few selectable resources and a high probability of resource conflict.
  • Fig. 12 is a schematic diagram 7 of resources for selecting resources provided by this embodiment of the present application.
  • the terminal device can listen first, for example, listen to A from time slot n+1 time slots, select resources x, y, z within the resource selection window [m+T 1 , m+T 2 ] according to the listening result.
  • the probability of resource conflict between y, z and other terminal devices is low.
  • the terminal device may perform re-evaluation or pre-emption detection before using the resources x, y, and z for data transmission.
  • the resource selection method is determined according to the time delay requirement of the sideline data to be transmitted by the terminal equipment.
  • the terminal with high time delay requirement can select the resource by using the first resource selection method, and the resource can be selected as soon as possible.
  • the time domain position of the selected resource is close to In this way, transmission resources can be selected within the delay range; terminals with low delay requirements can use the second resource selection method to select resources, and select resources according to the listening results of a certain period of time.
  • the first information acquired by the terminal device is used to indicate whether the sideline feedback of the terminal device is activated, and the terminal device determines the resource selection method according to whether the first information satisfies the first condition, including:
  • the terminal device determines to use the first resource selection method
  • the terminal device determines to use the second resource selection method.
  • NR-V2X if sideline feedback is activated, after receiving the sideline data from the sending terminal, the receiving terminal needs to send the sideline feedback information to the sending terminal, and the sideline feedback information is carried in the PSFCH. Since the receiving terminal needs processing time to detect the PSSCH, the time interval between the PSFCH and its associated PSSCH is specified in NR-V2X as 2 or 3 time slots, denoted as a, and the specific time interval can be pre-configured or network configuration. of. After the sending terminal sends the PSSCH, it needs to detect the PSFCH sent by the receiving terminal. If the PSFCH carries NACK, the sending terminal needs to retransmit the data, and the sending terminal needs to detect the PSFCH and prepare for the data retransmission. Processing time, such as the time is b time slots. Therefore, for the sending terminal, the time interval between the transmission resources of two adjacent sideline transmissions is at least a+b time slots.
  • FIG. 13 is a schematic diagram 8 of resources for selecting resources provided by this embodiment of the application.
  • the period of the PSFCH is 2 time slots, and the PSFCH and its associated PSSCH are the same.
  • the minimum time interval between time slots is 2 time slots.
  • the corresponding PSFCH is in time slot 3.
  • the sending terminal needs to send a retransmission on the side of time slot 5, and the time interval between two adjacent transmissions is 4. time slot.
  • the sending terminal may select two adjacent time slots for sideline transmission, and the time interval between two adjacent transmission resources is one time slot at this time.
  • the transmitting terminal can select resources by using the first resource selection method, so that the transmitting terminal can select transmission resources as soon as possible, so that more time slots can be selected. If the sending terminal sideline feedback is deactivated, the sending terminal can use the second resource selection method to select resources. At this time, the time interval between two adjacent transmission resources is 1 timeslot, and the terminal can have more timeslots for resource selection. , therefore, the terminal can perform resource listening first, and select resources according to the listening result.
  • the above-mentioned several embodiments determine the resource selection method from factors such as the priority of the data or service to be transmitted, the number of transmissions, the number of retransmissions, the delay requirement, whether the sideline feedback is activated, etc.
  • the probability of resource conflict of other terminals improves the sideline data transmission performance.
  • the resource selection mode may also be determined by a combination of two or more transmission parameters of the data to be transmitted in the first information.
  • the following takes side-traffic as an example to list several possible options. Implementation plan.
  • the first information acquired by the terminal device includes the transmission times and delay of the sideline data to be transmitted. Specifically, if the ratio of the number of times of sideline data transmission to the number of time slots corresponding to the time delay of the sideline data is greater than or equal to the first threshold, the terminal device may use the first resource selection method.
  • the first threshold is the ratio of the transmission times threshold to the delay threshold. If the ratio of the number of times of sideline data transmission to the number of time slots corresponding to the time delay of the sideline data is smaller than the first threshold, the terminal device may use the second resource selection method.
  • the number of transmissions of the sideline data is the maximum number of transmissions preconfigured or configured by the network.
  • the first threshold may be preconfigured or network configured.
  • the first information acquired by the terminal device includes the number of retransmissions and time delay of the sideline data to be transmitted. Specifically, if the ratio of the number of retransmissions of the sideline data to the number of time slots corresponding to the delay of the sideline data is greater than or equal to the second threshold, the terminal device may use the first resource selection method.
  • the second threshold is the ratio of the retransmission times threshold to the delay threshold. If the ratio of the number of retransmissions of the sideline data to the number of time slots corresponding to the delay of the sideline data is smaller than the second threshold, the terminal device may use the second resource selection method.
  • the number of retransmissions of the sideline data is the maximum number of retransmissions pre-configured or configured by the network.
  • the second threshold may be preconfigured or network configured.
  • the first information acquired by the terminal device includes the priority and time delay of the sideline data to be transmitted, and the terminal device determines the resource selection method according to whether the first information satisfies the first condition, including: if If the priority value of the sideline data to be transmitted is less than the priority threshold, and the delay of the sideline data is less than the delay threshold, the terminal device adopts the first resource selection method, otherwise the second resource selection method is adopted; When the priority value of the sideline data is greater than the priority threshold, and the delay of the sideline data is greater than the delay threshold, the terminal device adopts the second resource selection method; otherwise, the first resource selection method is adopted.
  • the first information acquired by the terminal device includes the priority of the sideline data to be transmitted and the number of times of transmission, and the terminal device determines the resource selection method according to whether the first information satisfies the first condition, including: if The priority value of the sideline data to be transmitted is less than the priority threshold, and the transmission times of the sideline data is greater than the transmission times threshold, the terminal device adopts the first resource selection method, otherwise the second resource selection method is adopted; The priority value of the sideline data is greater than the priority threshold, and the transmission times of the sideline data is less than the transmission times threshold, the terminal device adopts the second resource selection mode, otherwise the first resource selection mode is adopted.
  • the first information acquired by the terminal device includes the priority of the sideline data to be transmitted and the number of retransmissions
  • the terminal device determines the resource selection method according to whether the first information satisfies the first condition, including: If the priority value of the sideline data to be transmitted is smaller than the priority threshold, and the number of retransmissions of the sideline data is greater than the threshold of the number of retransmissions, the terminal device adopts the first resource selection method, otherwise, the second resource selection method is adopted; or, If the priority value of the sideline data to be transmitted is greater than the priority threshold, and the number of retransmissions of the sideline data is less than the threshold of the number of retransmissions, the terminal device adopts the second resource selection method; otherwise, the first resource selection method is adopted.
  • the first information acquired by the terminal device includes the delay of the sideline data to be transmitted and the number of times of transmission, and the terminal device determines the resource selection method according to whether the first information satisfies the first condition, including: if The delay of the sideline data to be transmitted is less than the delay threshold, and the transmission times of the sideline data is greater than the transmission times threshold, the terminal device adopts the first resource selection method, otherwise, the second resource selection method is adopted; If the delay of the line data is greater than the delay threshold, and the transmission times of the sideline data is less than the transmission times threshold, the terminal device adopts the second resource selection mode, otherwise, the first resource selection mode is adopted.
  • the first information acquired by the terminal device includes the delay of the sideline data to be transmitted and the number of retransmissions
  • the terminal device determines the resource selection method according to whether the first information satisfies the first condition, including: If the delay of the sideline data to be transmitted is less than the delay threshold, and the number of retransmissions of the sideline data is greater than the threshold of the number of retransmissions, the terminal device adopts the first resource selection method; otherwise, the second resource selection method is adopted; If the delay of the transmitted sideline data is greater than the delay threshold, and the number of retransmissions of the sideline data is less than the threshold of the number of retransmissions, the terminal device adopts the second resource selection method; otherwise, the first resource selection method is adopted.
  • the above embodiment shows the criteria for the terminal device to determine to use the first resource selection method or the second resource selection method, according to the priority of the sideline data to be transmitted by the terminal device, the number of transmissions or retransmissions, the delay requirement, the side
  • the resource selection method is determined by factors such as whether line feedback is activated, so that the terminal equipment can reduce the probability of resource conflict with other terminal equipment and improve the transmission performance of sideline data under the premise of satisfying the delay.
  • FIG. 14 is a schematic structural diagram of a resource selection apparatus provided by an embodiment of the present application.
  • the resource selection apparatus 300 provided by this embodiment includes:
  • an obtaining module 301 configured to obtain first information, where the first information is used to indicate the data transmission state of the terminal device;
  • the determining module 302 is configured to determine a resource selection mode according to whether the first information satisfies the first condition.
  • the first information includes at least one item of the priority of the data to be transmitted by the terminal device, the number of transmissions, the number of retransmissions, and the delay.
  • the first information includes the priority of the data to be transmitted by the terminal device
  • the determining module is specifically configured to, according to the priority of the data to be transmitted by the terminal device and the priority threshold, Determine how resources are selected.
  • the determining module is specifically used for:
  • the priority value of the data to be transmitted by the terminal device is greater than or equal to the priority threshold, it is determined to adopt the second resource selection method.
  • the first information includes the transmission times of the data to be transmitted by the terminal device
  • the determining module is specifically configured to determine the resource according to the transmission times of the data to be transmitted by the terminal device and a threshold of the transmission times Selection method.
  • the determining module is specifically used for:
  • the transmission times of the data to be transmitted by the terminal device is greater than the transmission times threshold, determine to use the first resource selection method
  • the transmission times of the data to be transmitted by the terminal device is less than or equal to the transmission times threshold, it is determined to adopt the second resource selection method.
  • the determining module is further configured to determine the transmission times of the data to be transmitted.
  • the determining module is specifically configured to determine the transmission times of the data to be transmitted according to pre-configuration information or network configuration information.
  • the determining module is specifically configured to determine the transmission times of the data to be transmitted according to the priority of the data to be transmitted.
  • the resource first information includes the number of retransmissions of the data to be transmitted by the terminal device
  • the determining module is specifically configured to retransmit the data to be transmitted by the terminal device according to the number of times and the number of retransmissions
  • the threshold determines the resource selection method
  • the determining module is specifically used for:
  • the terminal device If the number of retransmissions of the data to be transmitted by the terminal device is less than or equal to the threshold of the number of retransmissions, it is determined to adopt the second resource selection method.
  • the first information includes the time delay of the data to be transmitted by the terminal device
  • the determining module is specifically configured to determine the resource according to the time delay of the data to be transmitted by the terminal device and a time delay threshold Selection method.
  • the determining module is specifically used for:
  • the delay of the data to be transmitted by the terminal device is greater than or equal to the delay threshold, it is determined to adopt the second resource selection method.
  • the first information is used to indicate whether sideline feedback of the terminal device is activated.
  • the determining module is specifically used for:
  • the first information indicates that the sideline feedback of the terminal device is activated, determine to use the first resource selection method
  • the first information indicates that the sideline feedback of the terminal device is not activated, it is determined to adopt the second resource selection method.
  • the resource selection method includes a first resource selection method
  • the first resource selection method is that the terminal device determines a resource selection window after the current moment, and randomly selects transmission resources from the resource selection window;
  • the current time includes at least one of the following: the time when data arrives, the time when resource selection is performed, the time when resource reselection is performed, and the time when a higher layer requests the terminal device to determine a candidate resource set for selecting sideline transmission resources.
  • the resource selection method includes a second resource selection method
  • the second resource selection method is that the terminal device determines a candidate resource set according to a listening result of a preset period after the current moment, and randomly selects a transmission resource from the candidate resource set;
  • the current time includes at least one of the following: the time when the data arrives, the time when the resource selection is performed, the time when the resource reselection is performed, or the time when the upper layer requests the terminal device to determine a candidate resource set for selecting a sideline transmission resource .
  • the terminal device performs re-evaluation (re-evaluation) or resource pre-emption (pre-emption) detection before using the randomly selected transmission resource to transmit data.
  • the resource selection apparatus provided in the embodiment of the present application is used to execute the technical solution executed by the terminal device in the foregoing method embodiment, and its implementation principle and technical effect are similar, and details are not described herein again.
  • each module of the resource selection apparatus is only a division of logical functions, and may be fully or partially integrated into one physical entity in actual implementation, or may be physically separated.
  • these modules can all be implemented in the form of software calling through processing elements; they can also all be implemented in hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in hardware.
  • the processing module may be a separately established processing element, or may be integrated into a certain chip of the above-mentioned device to be implemented, in addition, it may also be stored in the memory of the above-mentioned device in the form of program code, and a certain processing element of the above-mentioned device Call and execute the function of the above determined module.
  • the implementation of other modules is similar.
  • all or part of these modules can be integrated together, and can also be implemented independently.
  • the processing element described here may be an integrated circuit with signal processing capability.
  • each step of the above-mentioned method or each of the above-mentioned modules can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.
  • the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more application specific integrated circuits (ASIC), or one or more microprocessors (digital) signal processor, DSP), or, one or more field programmable gate arrays (field programmable gate array, FPGA), etc.
  • ASIC application specific integrated circuits
  • DSP digital signal processor
  • FPGA field programmable gate array
  • the processing element may be a general-purpose processor, such as a central processing unit (central processing unit, CPU) or other processors that can call program codes.
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).
  • SOC system-on-a-chip
  • the above-mentioned embodiments it may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media.
  • the usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.
  • FIG. 15 is a schematic diagram of a hardware structure of an electronic device provided by an embodiment of the present application.
  • the electronic device 400 provided by this embodiment may include: a processor 401 , a memory 402 , and a communication interface 403 .
  • the memory 402 is used to store computer programs; the processor 401 is used to execute the computer programs stored in the memory 402 to implement the method executed by the terminal device in any of the above method embodiments.
  • the communication interface 403 is used for data communication or signal communication with other devices.
  • the memory 402 may be independent or integrated with the processor 401 .
  • the electronic device 400 may further include: a bus 404 for connecting the memory 402 and the processor 401 .
  • the determination module 302 in FIG. 14 may be integrated in the processor 401 to be implemented, and the acquisition module 301 may be integrated in the communication interface 403 to be implemented.
  • the electronic device provided in this embodiment can be used to execute the method executed by the terminal device in any of the above method embodiments, and the implementation principle and technical effect thereof are similar, and are not repeated here.
  • Embodiments of the present application further provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, are used to implement the terminal in any of the foregoing method embodiments The technical solution of the equipment.
  • the embodiments of the present application further provide a computer program, which, when the computer program is executed by the processor, is used to execute the technical solution of the terminal device in any of the foregoing method embodiments.
  • Embodiments of the present application further provide a computer program product, including program instructions, where the program instructions are used to implement the technical solution of the terminal device in any of the foregoing method embodiments.
  • Embodiments of the present application further provide a chip, including: a processing module and a communication interface, where the processing module can execute the technical solutions of the terminal device in the foregoing method embodiments.
  • the chip also includes a storage module (eg, memory), the storage module is used for storing instructions, the processing module is used for executing the instructions stored in the storage module, and the execution of the instructions stored in the storage module causes the processing module to execute any of the foregoing.
  • a storage module eg, memory
  • the storage module is used for storing instructions
  • the processing module is used for executing the instructions stored in the storage module
  • the execution of the instructions stored in the storage module causes the processing module to execute any of the foregoing.
  • At least two means two or more, and "a plurality” means two or more.
  • “And/or”, which describes the association relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, which can indicate: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related objects before and after are an “or” relationship; in the formula, the character “/” indicates that the related objects are a “division” relationship.
  • “At least one item(s) below” or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • At least one item (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple indivual.

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  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

本申请提供一种资源选取方法、装置、设备及存储介质，用于提升数据传输性能。终端设备确定终端设备待传输数据的优先级、时延需求、传输次数或重传次数等传输参数，或者确定终端设备侧行反馈是否激活，基于待传输数据的传输参数、侧行反馈是否激活等因素确定采用的资源选取方式。其中，资源选取方式包括第一资源选取方式和第二资源选取方式，第一资源选取方式是终端设备确定当前时刻之后的资源选择窗，从资源选择窗中随机选取传输资源；第二资源选取方式是终端设备根据当前时刻之后的预设时段的侦听结果，确定候选资源集合，从候选资源集合中随机选取传输资源。

Description

资源选取方法、装置、设备及存储介质 技术领域
本申请实施例涉及无线通信技术领域，尤其涉及一种资源选取方法、装置、设备及存储介质。
背景技术
作为面向第五代移动通信(5th generation mobile networks，5G)的关键技术，设备到设备(device-to-device，D2D)通信，包括车对车(vehicle to vehicle，V2V)通信或车到设备(vehicle to everything，V2X)通信。D2D通信引入了侧行链路(sidelink，SL)传输技术。与传统的蜂窝系统中通信数据通过基站接收或发送数据的方式不同，由于采用终端到终端直接通信的方式，因此具有更高的频谱效率以及更低的传输时延。
目前第三代合作伙伴计划(3rd generation partnership project，3GPP)在V2X技术中，定义了两种传输模式：一种是终端根据基站分配的资源在侧行链路上传输数据，基站可以为终端分配单次传输的资源，或者分配半静态传输的资源。另一种是终端根据现有的侦听流程确定候选资源集合，进而在候选资源集合中自主选取资源进行侧行传输。
在NR-V2X中支持周期性业务和非周期性业务(或称为突发burst业务)。对于非周期性业务，终端无法预知业务的到达时间。对于具有节能需求的终端，如手持终端，为了降低能耗，终端并不是一直处于侦听状态，因此会出现某时刻非周期业务到达时，终端没有该时刻之前的侦听结果，因此可能和有非周期业务的终端选取的资源相冲突。
发明内容
本申请实施例提供一种资源选取方法、装置、设备及存储介质，降低资源冲突概率，提高数据传输性能。
第一方面，本申请实施例提供一种资源选取方法，该方法包括：终端设备获取第一信息，所述第一信息用于指示所述终端设备的数据传输状态；所述终端设备根据所述第一信息是否满足第一条件，确定资源选取方式。
第二方面，本申请实施例提供一种资源选取装置，该装置包括：获取模块和确定模块。其中，获取模块，用于获取第一信息，所述第一信息用于指示所述终端设备的数据传输状态；确定模块，用于根据所述第一信息是否满足第一条件，确定资源选取方式。
第三方面，本申请实施例提供一种电子设备，包括：存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，使得所述处理器运行所述计算机程序执行本申请第一方面中任一项所述的方法。
第四方面，本申请实施例提供一种计算机存储介质，用于存储计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行本申请第一方面中任一项所述的方法。
第五方面，本申请实施例提供一种计算机程序，所述计算机程序被处理器执行时，用于执行本申请第一方面中任一项所述的方法。
第六方面，本申请实施例提供一种计算机程序产品，当所述计算机程序产品在计算机上运行时，使得所述计算机执行本申请第一方面中任一项所述的方法。
第七方面，本申请实施例提供一种芯片，包括：处理模块与通信接口，所述处理模块用于从存储器中调用并运行所述存储器中存储的计算机程序，执行本申请第一方 面中任一项所述的方法。
本申请实施例提供一种资源选取方法、装置、设备及存储介质，用于提升数据传输性能。终端设备确定终端设备待传输数据的优先级、时延需求、传输次数或重传次数等传输参数，或者确定终端设备侧行反馈是否激活，基于待传输数据的传输参数、侧行反馈是否激活等因素确定采用的资源选取方式。其中，资源选取方式包括第一资源选取方式和第二资源选取方式，第一资源选取方式是终端设备确定当前时刻之后的资源选择窗，从资源选择窗中随机选取传输资源；第二资源选取方式是终端设备根据当前时刻之后的预设时段的侦听结果，确定候选资源集合，从候选资源集合中随机选取传输资源。在使用随机选取的资源传输数据之前，还可以进行重评估(re-evaluation)或资源抢占(pre-emption)检测，从而降低与其他终端发生资源冲突，提升数据传输性能。
附图说明
图1为本申请实施例提供的一种应用场景示意图；
图2为本申请实施例提供的一种应用场景示意图；
图3为本申请实施例提供的一种应用场景示意图；
图4为本申请实施例提供的选取资源的资源示意图一；
图5为本申请实施例提供的物理侧行反馈信道PSFCH资源的示意图；
图6为本申请实施例提供的一种资源选取方法的流程示意图；
图7为本申请实施例提供的选取资源的资源示意图二；
图8为本申请实施例提供的选取资源的资源示意图三；
图9为本申请实施例提供的选取资源的资源示意图四；
图10为本申请实施例提供的选取资源的资源示意图五；
图11为本申请实施例提供的选取资源的资源示意图六；
图12为本申请实施例提供的选取资源的资源示意图七；
图13为本申请实施例提供的选取资源的资源示意图八；
图14为本申请实施例提供的一种资源选取装置的结构示意图；
图15为本申请实施例提供的一种电子设备的硬件结构示意图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例的说明书、权利要求书及上述附图中的术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
应理解，在本申请的实施例中提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。
在本申请实施例的描述中，术语“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配 置等关系。
在介绍本申请实施例提供的技术方案之前，首先对本申请实施例可能的应用场景进行说明。
示例性的，图1为本申请实施例提供的一种应用场景示意图。图1所示的通信系统中包括一个网络设备101以及两个终端设备，分别为终端设备102和103，终端设备102和终端设备103均处于网络设备101的覆盖范围内。网络设备101分别与终端设备102、终端设备103通信连接，终端设备102与终端设备103通信连接。示例性的，终端设备102可以通过网络设备101向终端设备103发送通信消息，终端设备102还可以直接向终端设备103发送通信消息。其中，终端设备102与终端设备103之间直接通信的链路称为D2D链路，也可以称为临近服务(proximity service，ProSe)链路、侧行链路等。D2D链路上的传输资源可以由网络设备分配。
示例性的，图2为本申请实施例提供的一种应用场景示意图。图2所示的通信系统同样包括一个网络设备101以两个终端设备，与图1不同的是，终端设备103处于网络设备101的覆盖范围内，终端设备104在网络设备101的覆盖范围之外。网络设备101与终端设备103通信连接，终端设备103与终端设备104通信连接。示例性的，终端设备103可以接收网络设备101发送的配置信息，根据配置信息进行侧行通信。由于终端设备104无法接收网络设备101发送的配置信息，终端设备104可以根据预配置(pre-configuration)信息以及终端设备103发送的侧行广播信道(Physical Sidelink Broadcast Channel，PSBCH)中携带的信息，进行侧行通信。
示例性的，图3为本申请实施例提供的一种应用场景示意图。图3所示的终端设备104和终端设备105均在网络设备101的覆盖范围之外。终端设备104与终端设备105均可以根据预配置信息确定侧行配置，进行侧行通信。
在3GPP协议定义了两种传输模式：第一传输模式和第二传输模式。
第一传输模式：终端设备的传输资源是由基站分配的，终端设备根据基站分配的资源在侧行链路上进行数据传输。基站可以为终端设备分配单次传输的资源，也可以为终端设备分配半静态传输的资源。例如，第一传输模式包括LTE-V2X中的传输模式3，或NR-V2X中的传输模式1。
示例性的，图1中，终端设备102位于网络设备101覆盖范围内，网络设备101位终端设备102分配侧行传输使用的传输资源。
第二传输模式：(1)终端设备如果具备侦听能力，可采用侦听和预留的方式传输数据。具体的，终端设备可以在网络配置或预配置的资源池中，通过侦听的方式获取可用的资源集合，从可用的资源集合中随机选取一个资源进行数据传输。由于车辆网系统中的业务具有周期性特征，因此终端设备通常采用半静态传输的方式，即终端设备选取一个传输资源后，会在多个传输周期中持续的使用该资源，从而降低资源重选以及资源冲突的概率。终端设备会在本次传输的控制信息中携带预留下次传输资源的信息，从而使得其他终端设备可以通过检测该终端设备的控制信息判断这块资源是否被终端设备预留和使用，达到降低资源冲突的目的。(2)终端设备如果不具备侦听能力，可直接在资源池中随机选取传输资源。例如，第二传输模式包括LTE-V2X中的传输模式4，或NR-V2X中的传输模式2。
示例性的，图1所示的终端设备102可以在网络配置的资源池中自主选取传输资源进行侧行传输。图3所示的终端设备104和105均位于网络设备101覆盖范围外，终端设备104和105可以在预配置的资源池中自主选取传输资源进行侧行传输。
基于上述描述可知，终端设备工作在NR-V2X中的传输模式2时，可以根据侦听结果进行资源选取。具体的，当在时刻n有新的数据达到时，终端设备可根据时刻n之前的预设时段的侦听结果，在资源选择窗内进行资源选取。
示例性的，图4为本申请实施例提供的选取资源的资源示意图一，如图4所示， 在时刻n有业务数据到达时，终端设备在时刻n对应的资源选择窗[n+T 1,n+T 2]内随机选取资源，例如选取了4个资源，分别为资源w、x、y、z，T 1＝1，T 2＝100。其中，0≤T 1≤T proc,1，T proc,1是根据终端设备的处理能力确定，T 2min≤T 2≤剩余PDB(packet delay budget，数据延迟)，T 2min根据配置参数确定，PDB根据待传输数据的时延确定，例如。
具体的，终端设备在资源选择窗[n+T 1,n+T 2]进行资源选取的过程包括：
步骤0、终端设备将资源选择窗内所有可用的资源作为一个集合A；
步骤1、如果终端设备在侦听窗内的某些时隙由于半双工问题导致没有侦听结果，则这些时隙在资源选择窗内对应的时隙上的资源被排除掉。
步骤2、如果终端设备在侦听窗内检测到PSCCH，测量该PSCCH的参考信号接收功率(Reference Signal Received Power,RSRP)，或者，测量该PSCCH调度的PSSCH的RSRP，如果测量的RSRP大于RSRP门限，且承载在PSCCH/PSSCH的SCI中预留的传输资源与终端设备待传输的侧行数据存在资源冲突，则终端设备在集合A中排除该资源。其中，PSSCH-RSRP门限的选取是由检测到的PSCCH中携带的优先级信息和终端设备待传输数据的优先级确定的。
步骤3、如果集合A中剩余的资源个数小于总资源个数的X％，终端设备会提升RSRP的门限3dB，并且重复上述步骤，直至集合A中剩余的资源个数大于总资源个数的X％。其中，X是高层配置参数，例如X＝20,30或50。
步骤4、终端设备将确定的集合A，即候选资源集合(或称为可用资源集合)，上报给高层，高层从物理层上报的候选资源集合中随机选取传输资源用于侧行传输。
本申请实施例涉及到的终端设备还可以称为终端，可以是一种具有无线收发功能的设备，其可以部署在陆地上，包括室内或室外、手持或车载；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)。终端设备可以是用户设备(user equipment，UE)，其中，UE包括具有无线通信功能的手持式设备、车载设备、可穿戴设备或计算设备。示例性地，UE可以是手机(mobile phone)、平板电脑或带无线收发功能的电脑。终端设备还可以是虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制中的无线终端、无人驾驶中的无线终端、远程医疗中的无线终端、智能电网中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。本申请实施例中，用于实现终端的功能的装置可以是终端；也可以是能够支持终端实现该功能的装置，例如芯片系统，该装置可以被安装在终端中。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。
本申请实施例涉及到的网络设备包括基站(base station，BS)，可以是一种部署在无线接入网中能够和终端进行无线通信的设备。其中，基站可能有多种形式，比如宏基站、微基站、中继站和接入点等。示例性地，本申请实施例涉及到的基站可以是5G中的基站或LTE中的基站，其中，5G中的基站还可以称为发送接收点(transmission reception point，TRP)或gNB。本申请实施例中，用于实现网络设备的功能的装置可以是网络设备；也可以是能够支持网络设备实现该功能的装置，例如芯片系统，该装置可以被安装在网络设备中。
本申请实施例的技术方案主要应用于基于新空口(New Radio,NR)技术的通信系统，例如5G通信系统、NR-V2X、NR-V2V通信系统等。也可以应用于其它的通信系统，只要该通信系统中存在实体之间的资源调度即可，例如可以应用在网络设备和终端设备之间的资源调度，或者两个终端设备之间的资源调度，其中一个终端设备承担接入网络的功能等。
需要说明的是，本申请实施例描述的系统架构以及应用场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的问题，同样适用。
NR-V2X通信中，X可以泛指任意具有无线接收和发送能力的设备，包括但不限于慢速移动的无线装置，快速移动的车载设备，具有无线发射接收能力的网络控制节点等。NR-V2X通信支持单播、组播、广播的传输方式。对于单播传输，发送终端发送数据，接收终端只有一个。对于组播传输，发送终端发送数据，接收终端是一个通信组内的所有终端，或者是在一定传输距离内的所有终端。对于广播传输，发送终端发送数据，接收终端是发送终端周围的任意一个终端。
NR-V2X通信需要支持自动驾驶，因此对车辆之间数据交互提出了更高的要求，如更高的吞吐量、更低的时延、更高的可靠性、更大的覆盖范围、更灵活的资源分配等。为了提高通信的可靠性，在NR-V2X中引入了物理侧行反馈信道(Physical Sidelink Feedback Channel，PSFCH)。
对于单播传输，发送终端向接收终端发送侧行数据，包括物理侧行控制信道(Physical Sidelink Control Channel，PSCCH)和物理侧行共享信道(Physical Sidelink Shared Channel，PSSCH)，接收终端向发送终端发送混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)的反馈信息，发送终端根据接收终端的反馈信息判断是否需要进行数据重传。其中，HARQ的反馈信息承载在PSFCH中。
终端设备可以激活或去激活侧行反馈。如果侧行反馈被激活，接收终端接收发送终端发送的侧行数据，需要根据检测结果向发送终端反馈HARQ ACK/NACK(确认/不确认)，发送终端根据接收终端的反馈信息决定发送重传数据或新数据。如果侧行反馈被去激活，接收终端不需要发送反馈信息，发送终端通常采用盲重传的方式发送数据，例如发送终端对每个侧行数据重复发送预设的重传次数。
对于组播传输，支持如下两种侧行反馈方式：
方式1：在一定距离范围内的终端接收发送终端的侧行数据，如果检测结果是NACK，则需要发送侧行反馈；如果检测结果是ACK，则不需要发送侧行反馈。在该距离范围外的终端，无论检测结果是什么都不需要发送侧行反馈。
方式2：对于一个通信组，所有的接收终端都需要发送侧行反馈。例如，一个通信组包括P个终端，当一个终端作为发送终端发送侧行数据时，其他的P-1个终端都需要发送侧行反馈信息。
为了降低PSFCH信道的开销，可定义侧行反馈资源的周期，例如周期为N个时隙slot，N取1、2、4等，参数N可以是预配置或网络配置的。
示例性的，图5为本申请实施例提供的物理侧行反馈信道PSFCH资源的示意图，如图5所示，PSFCH的周期为4个时隙。其中时隙2、3、4、5中传输的PSSCH，其反馈信息都是在时隙7中传输，因此可以把时隙2、3、4、5看作一个时隙集合，该时隙集合中传输的PSSCH，其对应的PSFCH是在相同的时隙(时隙7)中。图5中的GP(Guard Period)为保护间隔。
发送终端在时隙n发送PSSCH/PSCCH，接收终端在时隙n+k之后的第一个可用时隙发送PSFCH，其中k是配置参数，例如k取2或3。第一个可用时隙可以理解为时隙n+k之后的第一个包括PSFCH资源的时隙，以图5为例，假设k取2，发送终端在时隙4发送PSSCH/PSCCH，接收终端在时隙6(4+2)之后的第一个可用时隙，即时隙7，发送PSFCH。
NR-V2X通信中支持周期性业务和非周期业务(或称为突发业务)两种，对于周期性业务，业务的到达时间是具有相对固定的周期，终端可以预知业务的到达时间。然而，对于非周期性业务，业务的到达时间是不确定的，终端无法预知业务的到达时间。对于具有节能需求的终端，终端并不是一直处于侦听状态，而是只能侦听一部分资源，从而达到节能的目的。因此会出现当时刻n有非周期业务到达时，终端没有时刻n之前的侦听结果，此时终端如何进行资源选取是目前亟待解决的问题。
为了解决上述问题，本申请实施例提供的技术方案提供如下两种资源选取方式：
第一资源选取方式：在时刻n有数据到达时，终端在时刻n之后的资源选择窗中随机选取传输资源。
第二资源选取方式：在时刻n有数据到达时，终端先进行侦听，侦听预设时段，例如A个时隙，根据预设时段的侦听结果从候选资源集合中随机选取传输资源。
终端设备可以通过上述任意一种资源选取方式选取传输资源，在选取的资源上进行数据发送。然而，有可能存在两个终端设备选取了相同的传输资源，此时会发生资源冲突，降低通信系统的性能。为了解决这个问题，终端设备在使用选取的传输资源传输数据之前，还需要通过侦听确定是否与其他终端存在资源冲突，如果没有资源冲突，可以继续使用选取的传输资源，如果有资源冲突，需要进行资源重选。
由于存在上述两种资源选取方式，终端在接收到突发业务数据时，如何确定采用哪一种资源选取方式是需要进一步讨论的问题。对此，本申请实施例提供的技术方案中，终端设备可以根据待传输的侧行数据的传输参数(如侧行数据的优先级、时延需求、传输次数或重传次数等)，或者确定终端设备侧行反馈是否激活，等因素确定采用第一资源选取方式或第二资源选取方式进行资源选取。
下面通过具体实施例对本申请实施例提供的技术方案进行详细说明。需要说明的是，本申请实施例提供的技术方案可以包括以下内容中的部分或全部，下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例中不再赘述。
图6为本申请实施例提供的一种资源选取方法的流程示意图。如图6所示，本实施例提供的资源选取方法，包括如下几个步骤：
步骤201、终端设备获取第一信息，第一信息用于指示终端设备的数据传输状态。
在本申请的一个实施例中，第一信息包括终端设备待传输数据(或者业务)的优先级、传输次数、重传次数、时延的至少一项。在侧行通信中，待传输数据可以是待传输的侧行数据。
在本申请的一个实施例中，第一信息用于指示终端设备侧行反馈是否激活。
需要说明的是，终端设备除了获取第一信息之外，还需要获取配置信息，获取的配置信息可以是预配置或网络配置的信息。预配置的信息可以理解为终端设备在出厂时就固定在终端设备上的配置信息。
在本申请的一个实施例中，终端设备从高层获取配置信息，配置信息可以是预配置的信息，用于指示终端设备传输数据(例如侧行数据)的各类门限参数，或者，指示终端设备侧行反馈是否激活。
在本申请的一个实施例中，终端设备接收网络设备发送的配置信息，配置信息用于指示终端设备传输数据(例如侧行数据)的各类门限参数，或者，指示终端设备侧行反馈是否被激活。
可选的，配置信息包括优先级门限、传输次数门限、重传次数门限、时延门限的至少一项。
步骤202、终端设备根据第一信息是否满足第一条件，确定资源选取方式。
本实施例中，资源选取方式包括第一资源选取方式或第二资源选取方式。
其中，第一资源选取方式是终端设备确定当前时刻之后的资源选择窗，从资源选择窗中随机选取传输资源。第二资源选取方式是终端设备根据当前时刻之后的预设时段的侦听结果，确定候选资源集合，从候选资源集合中随机选取传输资源。
可选的，在一些实施例中，终端设备采用第一资源选取方式或第二资源选取方式随机选取传输资源，在使用随机选取的传输资源传输数据之前，终端设备还需要进行重评估(re-evaluation)或资源抢占(pre-emption)检测。
上述当前时刻包括以下至少一种：数据到达的时刻，进行资源选择的时刻，进行 资源重选的时刻，或高层请求终端设备确定候选资源集合用于选取侧行传输资源的时刻。
在本申请的一个实施例中，终端设备获取的第一信息包括终端设备待传输数据的优先级，终端设备根据第一信息是否满足第一条件，确定资源选取方式，包括：终端设备根据终端设备待传输数据的优先级以及优先级门限，确定资源选取方式。
具体的，若终端设备待传输数据的优先级取值小于优先级门限，终端设备确定采用第一资源选取方式。若终端设备待传输数据的优先级取值大于或等于优先级门限，终端设备确定采用第二资源选取方式。
本实施例中，优先级是指终端设备待传输数据的优先级，例如终端设备待传输的侧行数据或者业务的优先级。在一些实施例中，该优先级为终端设备向其他终端设备发送侧行数据时，在承载侧行数据的PSSCH对应的侧行链路控制信息(Sidelink Control Information，SCI)中携带的优先级。
具体的，可以通过优先级取值表示待传输数据的优先级。示例性的，优先级取值越低表示待传输数据的优先级越高，如优先级取值为0-7，优先级取值为0表示待传输数据为最高优先级。
以侧行通信为例，终端可以根据待传输侧行数据的优先级确定资源选取方式。
对于高优先级的侧行数据，终端设备可以采用第一资源选取方式进行资源选取，即终端设备在资源选择窗内随机选取资源。在使用选取的传输资源进行数据传输之前，终端设备进行侦听，判断选取的资源是否可用。
对于低优先级的侧行数据，终端设备可以采用第二资源选取方式进行资源选取，即终端设备根据当前时刻之后的预设时段的侦听结果，确定候选资源集合，从候选资源集合中随机选取传输资源。在使用选取的传输资源进行数据传输之前，终端设备进行侦听，判断选取的资源是否可用。
示例性的，参照图4，在时刻n有侧行数据达到时，若终端设备确定待传输的侧行数据的优先级高，则采用第一资源选取方式选取资源，例如在时刻n对应的资源选择窗[n+1,n+100]内随机选取资源w、x、y、z。图7为本申请实施例提供的选取资源的资源示意图二，如图7所示，假设资源x位于时隙m，资源w中的SCI已经指示资源x，资源x中的SCI即将指示资源y和z。
可选的，在使用资源x进行侧行传输之前，终端设备需要进行重评估(re-evaluation)检测，以判断资源y和z是否可用。具体的，终端设备在时隙m-T 3进行re-evaluation检测，在m-T 3时刻对应的侦听窗[n+1,m-T 3-T proc,0)，即从n时刻的下一个时隙，开始侦听。终端设备根据侦听窗内的侦听结果判定资源y,z是否可用，如果终端设备待传输数据的优先级高，则终端设备选取的资源y,z不容易被排除掉，即候选资源集合中保留资源y,z，终端设备可以使用资源y,z进行侧行传输，不需要进行资源重选。其中，T proc,0和T 3都是根据终端设备的处理能力确定，终端设备的处理能力越强，T proc,0和T 3越小。
可选的，在一些实施例中，在使用资源x进行侧行传输之前，终端设备还可以进行pre-emption检测，即资源抢占检测。在NR-V2X中，关于pre-emption检测的结论都是以被强占终端的角度描述。在完成资源选择后，终端仍然持续侦听SCI，如果已经选择的且已通过发送SCI指示的时频资源满足以下三个条件，终端触发资源重选：
1)侦听到的SCI中预留的资源与终端已选且已指示的资源重叠，包括全部重叠或部分重叠；
2)侦听到的SCI对应的PSCCH的RSRP或PSCCH调度的PSSCH的RSRP大于SL RSRP门限；
3)侦听到的SCI中携带的数据或业务的优先级高于终端待传输数据的优先级。
在图7中，由于资源x已经被资源w发送的SCI指示预留，因此在使用资源x进行传输前需要进行pre-emption检测。具体的，终端设备会根据m-T 3时刻之前的一段时间的侦听结果，如图7中所示的[n+1,m-T 3-T proc,0)内的侦听结果，在资源选择窗[m-T 3+T 1,m-T 3+T 2]内确定候选资源集合，如果资源x不在该候选资源集合中，并且满足上述3个条件，则终端设备需要进行资源重选，以替代资源x；否则，终端设备可以使用资源x进行侧行传输。
基于图7所示的示例，若终端设备使用资源x发送了侧行数据，且预留了资源y和z，假设资源y位于时隙p。示例性的，图8为本申请实施例提供的选取资源的资源示意图三，如图8所示，终端设备在使用资源y进行侧行传输之前，需要进行pre-emption检测，以判断资源y，z是否可用。具体的，终端设备在时隙p-T 3进行pre-emption检测，在p-T 3时刻对应的侦听窗[n+1,p-T 3-T proc,0)，即从n时刻的下一个时隙，开始侦听，并且根据侦听结果确定资源y，z是否可用，具体过程同上述确定x是否可用的过程相同，此处不再赘述。
可选的，在一些实施例中，侦听窗可以为[p-T 3-T proc,0-W,p-T 3-T proc,0)，即终端设备根据侦听窗的结束位置以及侦听窗的长度W，确定侦听窗的起始位置，侦听窗的长度W可根据SCI指示的两个传输资源之间的时间间隔确定，例如SCI指示x,y,z三个传输资源，侦听窗的长度W可根据第一个传输资源x与最后一个传输资源z之间的时间间隔确定，如W为32个时隙。
可选的，在一些实施例中，侦听窗的起始位置还可以是n+1和p-T 3-T proc,0-W中的最大值，表示为max(n+1,p-T 3-T proc,0-W)。终端设备根据p-T 3时刻之前的一段时间的侦听结果，在资源选择窗[p-T 3+T 1,p-T 3+T 2]内确定候选资源集合，进而确定n时刻选取的资源y是否可用。
示例性的，图9为本申请实施例提供的选取资源的资源示意图四，如图9所示，在时刻n有侧行数据达到时，若终端设备确定待传输的侧行数据的优先级低，则采用第二资源选取方式选取资源，即在时刻n之后，终端设备先进行侦听，例如侦听窗为[n+1,n+A)，其中A为预配置或网络配置参数。终端设备根据侦听结果在n+A之后的时隙中选取资源x,y,z。在使用选取的资源x,y,z之前，终端进行re-evaluation和pre-emption检测的过程参见图7或图8实施例中的描述，此处不再赘述。
上述实施例是根据终端待传输侧行数据的优先级确定资源选取方式，传输高优先级侧行数据的终端可采用第一资源选取方式选取资源，选取的资源不容易被其他终端抢占，可以避免频繁进行资源重选，提高资源选取的效率。
在本申请的一个实施例中，终端设备获取的第一信息包括终端设备待传输数据的传输次数，终端设备根据第一信息是否满足第一条件，确定资源选取方式，包括：终端设备根据传终端设备待传输数据的传输次数以及传输次数门限，确定资源选取方式。
具体的，若终端设备待传输数据的传输次数大于传输次数门限，确定采用第一资源选取方式。若终端设备待传输数据的传输次数小于或等于传输次数门限，确定采用第二资源选取方式。
以侧行通信为例，终端设备在根据终端设备待传输的侧行数据的传输次数以及传输次数门限，确定资源选取方式之前，可通过如下方式确定待传输的侧行数据的传输次数。
在一种可能的实施方式中，终端设备根据预配置信息或网络配置信息确定待传输的侧行数据的传输次数。即终端设备待传输的侧行数据的传输次数是预配置的，或者，网络设备配置的。
在NR-V2X中，可通过预配置或网络的方式配置一个侧行数据的传输次数N为1,2,4,8,16或32，即一个侧行数据块可以传输1至32次。对于需要N次传输的侧行数 据，终端需要选取N个时隙的传输资源，进行数据传输。
在一种可能的实施方式中，终端设备根据待传输的侧行数据的优先级，确定待传输的侧行数据的传输次数。具体的，预配置信息或网络配置信息包括待传输的侧行数据的优先级与传输次数的对应关系，终端设备根据待传输的侧行数据的优先级，以及待传输的侧行数据的优先级与传输次数的对应关系，确定待传输的侧行数据的传输次数。
在一些实施例中，终端可以根据待传输侧行数据的传输次数确定资源选取方式。
对于传输次数少的侧行数据，终端设备可以采用第二资源选取方式进行资源选取，即终端设备根据当前时刻之后的预设时段的侦听结果，确定候选资源集合，从候选资源集合中随机选取传输资源。在使用选取的传输资源进行数据传输之前，终端设备进行侦听，判断选取的资源是否可用。例如终端设备在使用传输资源进行数据传输前，进行re-evaluation或pre-emption检测。具体的，终端进行re-evaluation和pre-emption检测的过程参见上述实施例中的描述，此处不再赘述。
对于传输次数多的侧行数据，由于终端要保证在时延范围内有足够的时隙可以用于该数据的传输，因此，终端可以采用第一资源选取方式进行资源选取，即终端设备在资源选择窗内随机选取资源。在使用选取的传输资源进行数据传输之前，终端设备进行侦听，判断选取的资源是否可用。例如，终端设备在使用传输资源进行数据传输前，进行re-evaluation或pre-emption检测。具体的，终端进行re-evaluation和pre-emption检测的过程参见上述实施例中的描述，此处不再赘述。
示例性的，图10为本申请实施例提供的选取资源的资源示意图五，在时隙n有侧行数据到达，该侧行数据的时延为20ms，对应20个时隙，假设侧行数据的传输次数为16次，此时终端设备应采用第一资源选取方式进行资源选取，即先在资源选择窗内随机选取16个时隙上的资源，包括图10中的资源x,y,z。在使用资源x,y,z之前，终端设备需进行re-evaluation或pre-emption检测，判断选取的资源x,y,z是否存在资源冲突，如果存在资源冲突，则进行资源重选。需要说明的是，如果终端设备采用第二资源选取方式进行资源选取，终端设备在时隙n之后首先要进行资源侦听，终端设备最多能侦听4个时隙，根据这4个时隙的侦听结果，在剩下的16个时隙中选取传输资源，由于剩下的时隙只有16个，因此该终端设备需要在剩下的每个时隙上都选取一个传输资源，这会导致与其他终端设备的资源冲突的概率增大，降低传输性能。
示例性的，图11为本申请实施例提供的选取资源的资源示意图六，假设上述侧行数据的传输次数为4次，则终端设备可以采用第二资源选取方式进行资源选取，即先进行资源侦听，如图11所示，侦听时隙n之后的8个时隙，然后在剩下的12个时隙中选取4个时隙上的传输资源，由于剩下的时隙的个数远大于所需的传输次数，因此，终端设备与其他终端设备资源冲突的概率低，并且根据侦听结果选取的传输资源也可以达到降低与其他终端设备传输冲突的目标。
上述实施例是根据终端设备待传输侧行数据的传输次数确定资源选取方式，传输次数多的终端可采用第一资源选取方式选取资源，在时延范围内的时隙内选取所需的时隙个数进行数据的传输，可以避免由于先进行资源侦听导致可用时隙数减少，而提高与其他终端传输冲突概率的问题。
在本申请的一个实施例中，终端设备获取的第一信息包括终端设备待传输数据的重传次数，终端设备根据第一信息是否满足第一条件，确定资源选取方式，包括：终端设备根据终端设备待传输数据的重传次数以及重传次数门限，确定资源选取方式。
具体的，若终端设备待传输数据的重传次数大于重传次数门限，确定采用第一资源选取方式。若终端设备待传输数据的重传次数小于或等于重传次数门限，确定采用 第二资源选取方式。
以侧行通信为例，终端设备在根据终端设备待传输的侧行数据的重传次数以及重传次数门限，确定资源选取方式之前，需确定待传输的侧行数据的重传次数。其中，重传次数＝传输次数-1。传输次数的确定方式可参见上述实施例，本实施例不再赘述。
在一些实施例中，终端可以根据侧行数据的重传次数确定资源选取方式。
对于重传次数少的侧行数据，终端设备可以采用第二资源选取方式进行资源选取，即终端设备根据当前时刻之后的预设时段的侦听结果，确定候选资源集合，从候选资源集合中随机选取传输资源。在使用选取的传输资源进行数据传输之前，终端设备进行侦听，判断选取的资源是否可用。例如终端设备在使用传输资源进行数据传输前，进行re-evaluation或pre-emption检测。具体的，终端进行re-evaluation和pre-emption检测的过程参见上述实施例中的描述，此处不再赘述。
对于重传次数多的侧行数据，由于终端要保证在时延范围内有足够的时隙可以用于该数据的传输，因此，终端可以采用第一资源选取方式进行资源选取，即终端设备在资源选择窗内随机选取资源。在使用选取的传输资源进行数据传输之前，终端设备进行侦听，判断选取的资源是否可用。例如，终端设备在使用传输资源进行数据传输前，进行re-evaluation或pre-emption检测。具体的，终端进行re-evaluation和pre-emption检测的过程参见上述实施例中的描述，此处不再赘述。
上述实施例是根据终端设备待传输侧行数据的重传次数确定资源选取方式，重传次数多的终端可采用第一资源选取方式选取资源，在时延范围内的时隙内选取所需的时隙个数进行数据的传输，可以避免由于先进行资源侦听导致可用时隙数减少，而提高与其他终端传输冲突概率的问题。
在本申请的一个实施例中，终端设备获取的第一信息包括终端设备待传输数据的时延，终端设备根据第一信息是否满足第一条件，确定资源选取方式，包括：终端设备根据终端设备待传输数据的时延以及时延门限，确定资源选取方式。
具体的，若终端设备待传输数据的时延小于时延门限，确定采用第一资源选取方式。若终端设备待传输数据的时延大于或等于时延门限，确定采用第二资源选取方式。
以侧行通信为例，终端可以根据待传输侧行数据的时延确定资源选取方式。
对于时延低(即时延需求高)的侧行数据，终端设备可以采用第一资源选取方式进行资源选取，即终端设备在资源选择窗内随机选取资源。在使用选取的传输资源进行数据传输之前，终端设备进行侦听，判断选取的资源是否可用。例如终端设备在使用传输资源进行数据传输前，进行re-evaluation或pre-emption检测。具体的，终端进行re-evaluation和pre-emption检测的过程参见上述实施例中的描述，此处不再赘述。
对于时延高(即时延需求低)的侧行数据，终端设备可以采用第二资源选取方式进行资源选取，即终端设备根据当前时刻之后的预设时段的侦听结果，确定候选资源集合，从候选资源集合中随机选取传输资源。在使用选取的传输资源进行数据传输之前，终端设备进行侦听，判断选取的资源是否可用。例如终端设备在使用传输资源进行数据传输前，进行re-evaluation或pre-emption检测。具体的，终端进行re-evaluation和pre-emption检测的过程参见上述实施例中的描述，此处不再赘述。
示例性的，假设待传输的侧行数据的时延为10ms，当该侧行数据在时隙n到达时，终端设备可以采用第一资源选取方式，在时隙n对应的资源选择窗内随机选取资源，在使用资源之前，进行re-evaluation或pre-emption检测，判断资源是否可用。需要说明的是，如果终端设备此时采用第二资源选取方式进行资源选取，会导致可选资源数很少，增大资源冲突的概率。例如，在时隙n有侧行数据到达，终端设备在时隙n+1至时隙n+6进行侦听，此时资源选择窗对应时隙n+7至时隙n+10，即4个时隙，导致可选取的资源非常少，资源冲突概率大。
示例性的，假设待传输的侧行数据的时延为100ms，当该侧行数据在时隙n到达时，终端设备可以采用第二资源选取方式进行资源选取，即终端设备先进行资源侦听，再根据侦听结果选取资源。图12为本申请实施例提供的选取资源的资源示意图七，如图12所示，由于侧行数据的时延高，终端设备可以先进行侦听，例如，从时隙n+1侦听A个时隙，根据侦听结果在资源选择窗[m+T 1,m+T 2]内选取资源x,y,z，由于终端设备是根据侦听结果选取的传输资源，因此，资源x,y,z与其他终端设备之间的资源冲突概率低。进一步的，终端设备在使用资源x,y,z进行数据传输之前，可以进行re-evaluation或pre-emption检测。
上述实施例是根据终端设备待传输侧行数据的时延需求确定资源选取方式，时延需求高的终端可采用第一资源选取方式选取资源，可以尽快选取资源，选取的资源的时域位置靠前，从而实现在时延范围内选取到传输资源；时延需求低的终端可采用第二资源选取方式选取资源，根据一定时段的侦听结果选取资源，选取的资源与其他终端资源冲突的概率低。
在本申请的一个实施例中，终端设备获取的第一信息用于指示终端设备的侧行反馈是否激活，终端设备根据第一信息是否满足第一条件，确定资源选取方式，包括：
若第一信息指示终端设备的侧行反馈激活，终端设备确定采用第一资源选取方式；或者
若第一信息指示终端设备的侧行反馈没有激活，终端设备确定采用第二资源选取方式。
在NR-V2X中，如果侧行反馈被激活，接收终端接收来自发送终端的侧行数据后，需要向发送终端发送侧行反馈信息，侧行反馈信息承载在PSFCH中。由于接收终端检测PSSCH需要处理时间，因此，在NR-V2X中规定PSFCH与其关联的PSSCH之间的时间间隔为2或3个时隙，记为a，具体的时间间隔可以是预配置或网络配置的。发送终端发送PSSCH后，需要检测接收终端发送的PSFCH，如果该PSFCH承载的是NACK，则发送终端需要进行数据重传，而发送终端检测PSFCH与准备数据重传都需要处理时间，如该时间为b个时隙。因此，对于发送终端而言，相邻两个侧行传输的传输资源之间的时间间隔至少为a+b个时隙。
示例性的，图13为本申请实施例提供的选取资源的资源示意图八，如图13所示，假设发送终端侧行反馈被激活，PSFCH的周期为2个时隙，PSFCH与其关联的PSSCH之间的最小时间间隔为2个时隙，此时，在时隙1发送的PSSCH，其对应的PSFCH位于时隙3。假设发送终端检测PSFCH与准备数据重传的时间为1个时隙，即b＝1，则发送终端需要在时隙5发送侧行重传，此时相邻两次传输的时间间隔为4个时隙。如果发送终端侧行反馈没有被激活，则发送终端可以选取相邻的2个时隙进行侧行传输，此时相邻两个传输资源的时间间隔为1个时隙。
因此，如果发送终端侧行反馈被激活，发送终端可采用第一资源选取方式选取资源，使得发送终端可以尽快的选取传输资源，从而可以有更多的时隙可供选取。如果发送终端侧行反馈去激活，发送终端可以采用第二资源选取方式选取资源，此时相邻两个传输资源的时间间隔为1个时隙，终端可以有更多的时隙可以进行资源选取，因此，终端可以先进行资源侦听，根据侦听结果进行资源选取。
上述几个实施例分别从待传输数据或业务的优先级、传输次数、重传次数、时延需求、侧行反馈是否激活等因素确定资源选取方式，使得终端在满足延迟的前提下，降低与其他终端发生资源冲突的概率，提高了侧行数据传输性能。
除此之外，在一些实施例中，还可以通过第一信息中待传输数据的两个或两个以上传输参数的组合确定资源选取方式，下面以侧行通行为例，列举几种可能的实现方案。
在本申请的一个实施例中，终端设备获取的第一信息包括待传输的侧行数据的传输次数以及时延。具体的，若侧行数据的传输次数与该侧行数据的时延所对应的时隙个数的比值大于或等于第一门限，终端设备可采用第一资源选取方式。其中，第一门限是传输次数门限与时延门限的比值。若侧行数据的传输次数与该侧行数据的时延所对应的时隙个数的比值小于第一门限，终端设备可采用第二资源选取方式。其中，侧行数据的传输次数是预配置或网络配置的最大传输次数。第一门限可以是预配置或网络配置的。
在本申请的一个实施例中，终端设备获取的第一信息包括待传输的侧行数据的重传次数以及时延。具体的，若侧行数据的重传次数与该侧行数据的时延所对应的时隙个数的比值大于或等于第二门限，终端设备可采用第一资源选取方式。其中，第二门限是重传次数门限与时延门限的比值。若侧行数据的重传次数与该侧行数据的时延所对应的时隙个数的比值小于第二门限，终端设备可采用第二资源选取方式。其中，侧行数据的重传次数是预配置或网络配置的最大重传次数。第二门限可以是预配置或网络配置的。
在本申请的一个实施例中，终端设备获取的第一信息包括待传输的侧行数据的优先级以及时延，终端设备根据第一信息是否满足第一条件，确定资源选取方式，包括：若待传输的侧行数据的优先级取值小于优先级门限，且侧行数据的时延小于时延门限，终端设备采用第一资源选取方式，否则采用第二资源选取方式；或者，若待传输的侧行数据的优先级取值大于优先级门限，且侧行数据的时延大于时延门限时，终端设备采用第二资源选取方式，否则采用第一资源选取方式。
在本申请的一个实施例中，终端设备获取的第一信息包括待传输的侧行数据的优先级以及传输次数，终端设备根据第一信息是否满足第一条件，确定资源选取方式，包括：若待传输的侧行数据的优先级取值小于优先级门限，且侧行数据的传输次数大于传输次数门限，终端设备采用第一资源选取方式，否则采用第二资源选取方式；或者，若待传输的侧行数据的优先级取值大于优先级门限，且侧行数据的传输次数小于传输次数门限，终端设备采用第二资源选取方式，否则采用第一资源选取方式。
在本申请的一个实施例中，终端设备获取的第一信息包括待传输的侧行数据的优先级以及重传次数，终端设备根据第一信息是否满足第一条件，确定资源选取方式，包括：若待传输的侧行数据的优先级取值小于优先级门限，且侧行数据的重传次数大于重传次数门限，终端设备采用第一资源选取方式，否则采用第二资源选取方式；或者，若待传输的侧行数据的优先级取值大于优先级门限，且侧行数据的重传次数小于重传次数门限，终端设备采用第二资源选取方式，否则采用第一资源选取方式。
在本申请的一个实施例中，终端设备获取的第一信息包括待传输的侧行数据的时延以及传输次数，终端设备根据第一信息是否满足第一条件，确定资源选取方式，包括：若待传输的侧行数据的时延小于时延门限，且侧行数据的传输次数大于传输次数门限，终端设备采用第一资源选取方式，否则采用第二资源选取方式；或者，若待传输的侧行数据的时延大于时延门限，且侧行数据的传输次数小于传输次数门限，终端设备采用第二资源选取方式，否则采用第一资源选取方式。
在本申请的一个实施例中，终端设备获取的第一信息包括待传输的侧行数据的时延以及重传次数，终端设备根据第一信息是否满足第一条件，确定资源选取方式，包括：若待传输的侧行数据的时延小于时延门限，且侧行数据的重传次数大于重传次数门限，终端设备采用第一资源选取方式，否则采用第二资源选取方式；或者，若待传输的侧行数据的时延大于时延门限，且侧行数据的重传次数小于重传次数门限，终端设备采用第二资源选取方式，否则采用第一资源选取方式。
综上，上述实施例示出了终端设备确定使用第一资源选取方式或第二资源选取方 式的准则，根据终端设备待传输侧行数据的优先级、传输次数或重传次数、时延需求、侧行反馈是否激活等因素确定资源选取方式，使得终端设备在满足时延的前提下，降低与其他终端设备资源冲突的概率，提升侧行数据的传输性能。
示例性的，图14为本申请实施例提供的一种资源选取装置的结构示意图，如图14所示，本实施例提供的资源选取装置300，包括：
获取模块301，用于获取第一信息，所述第一信息用于指示所述终端设备的数据传输状态；
确定模块302，用于根据所述第一信息是否满足第一条件，确定资源选取方式。
可选的，所述第一信息包括所述终端设备待传输数据的优先级、传输次数、重传次数、时延的至少一项。
在本申请的一个实施例中，所述第一信息包括所述终端设备待传输数据的优先级，所述确定模块，具体用于根据所述终端设备待传输数据的优先级以及优先级门限，确定资源选取方式。
在本申请的一个实施例中，所述确定模块，具体用于：
若所述终端设备待传输数据的优先级取值小于所述优先级门限，确定采用第一资源选取方式；或者
若所述终端设备待传输数据的优先级取值大于或等于所述优先级门限，确定采用第二资源选取方式。
在本申请的一个实施例中，所述第一信息包括所述终端设备待传输数据的传输次数，所述确定模块，具体用于根据终端设备待传输数据的传输次数以及传输次数门限，确定资源选取方式。
在本申请的一个实施例中，所述确定模块，具体用于：
若所述终端设备待传输数据的传输次数大于所述传输次数门限，确定采用第一资源选取方式；或者
若所述终端设备待传输数据的传输次数小于或等于所述传输次数门限，确定采用第二资源选取方式。
在本申请的一个实施例中，所述确定模块，还用于确定所述待传输数据的传输次数。
在本申请的一个实施例中，所述确定模块，具体用于根据预配置信息或网络配置信息确定所述待传输数据的传输次数。
在本申请的一个实施例中，所述确定模块，具体用于根据所述待传输数据的优先级，确定所述待传输数据的传输次数。
在本申请的一个实施例中，所述资源第一信息包括所述终端设备待传输数据的重传次数，所述确定模块，具体用于根据终端设备待传输数据的重传次数以及重传次数门限，确定资源选取方式。
在本申请的一个实施例中，所述确定模块，具体用于：
若所述终端设备待传输数据的重传次数大于所述重传次数门限，确定采用第一资源选取方式；或者
若所述终端设备待传输数据的重传次数小于或等于所述重传次数门限，确定采用第二资源选取方式。
在本申请的一个实施例中，所述第一信息包括所述终端设备待传输数据的时延，所述确定模块，具体用于根据终端设备待传输数据的时延以及时延门限，确定资源选取方式。
在本申请的一个实施例中，所述确定模块，具体用于：
若所述终端设备待传输数据的时延小于所述时延门限，确定采用第一资源选取方 式；或者
若所述终端设备待传输数据的时延大于或等于所述时延门限，确定采用第二资源选取方式。
可选的，所述第一信息用于指示所述终端设备的侧行反馈是否被激活。
在本申请的一个实施例中，所述确定模块，具体用于：
若所述第一信息指示所述终端设备的侧行反馈激活，确定采用第一资源选取方式；或者
若所述第一信息指示所述终端设备的侧行反馈没有激活，确定采用第二资源选取方式。
在本申请的一个实施例中，所述资源选取方式包括第一资源选取方式；
所述第一资源选取方式是终端设备确定当前时刻之后的资源选择窗，从所述资源选择窗中随机选取传输资源；
其中，所述当前时刻包括以下至少一种：数据到达的时刻，进行资源选择的时刻，进行资源重选的时刻，高层请求所述终端设备确定候选资源集合用于选取侧行传输资源的时刻。
在本申请的一个实施例中，所述资源选取方式包括第二资源选取方式，
所述第二资源选取方式是终端设备根据当前时刻之后的预设时段的侦听结果，确定候选资源集合，从所述候选资源集合中随机选取传输资源；
其中，所述当前时刻包括以下至少一种：数据到达的时刻，进行资源选择的时刻，进行资源重选的时刻，或高层请求所述终端设备确定候选资源集合用于选取侧行传输资源的时刻。
在本申请的一个实施例中，所述终端设备在使用所述随机选取的传输资源传输数据之前，进行重评估(re-evaluation)或资源抢占(pre-emption)检测。
本申请实施例提供的资源选取装置，用于执行前述方法实施例中的终端设备执行的技术方案，其实现原理和技术效果类似，在此不再赘述。
需要说明的是，应理解以上资源选取装置的各个模块的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。且这些模块可以全部以软件通过处理元件调用的形式实现；也可以全部以硬件的形式实现；还可以部分模块通过处理元件调用软件的形式实现，部分模块通过硬件的形式实现。例如，处理模块可以为单独设立的处理元件，也可以集成在上述装置的某一个芯片中实现，此外，也可以以程序代码的形式存储于上述装置的存储器中，由上述装置的某一个处理元件调用并执行以上确定模块的功能。其它模块的实现与之类似。此外这些模块全部或部分可以集成在一起，也可以独立实现。这里所述的处理元件可以是一种集成电路，具有信号的处理能力。在实现过程中，上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。
例如，以上这些模块可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(application specific integrated circuit，ASIC)，或，一个或多个微处理器(digital signal processor，DSP)，或，一个或者多个现场可编程门阵列(field programmable gate array，FPGA)等。再如，当以上某个模块通过处理元件调度程序代码的形式实现时，该处理元件可以是通用处理器，例如中央处理器(central processing unit，CPU)或其它可以调用程序代码的处理器。再如，这些模块可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令 时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘solid state disk(SSD))等。
图15为本申请实施例提供的一种电子设备的硬件结构示意图，如图15所示，本实施例提供的电子设备400，可以包括：处理器401、存储器402和通信接口403。其中，存储器402，用于存储计算机程序；处理器401，用于执行存储器402存储的计算机程序，以实现上述任一方法实施例中终端设备所执行的方法。通信接口403，用于与其他设备进行数据通信或者信号通信。
可选的，存储器402既可以是独立的，也可以跟处理器401集成在一起。当所述存储器402是独立于处理器401之外的器件时，所述电子设备400还可以包括：总线404，用于连接所述存储器402和处理器401。
在一种可能的实施方式中，图14中的确定模块302可以集成在处理器401中实现，获取模块301可以集成在通信接口403中实现。
本实施例提供的电子设备，可用于执行上述任一方法实施例中终端设备所执行的方法，其实现原理和技术效果类似，此处不再赘述。
本申请实施例还提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机执行指令，当所述计算机执行指令被处理器执行时用于实现前述任一方法实施例中终端设备的技术方案。
本申请实施例还提供一种计算机程序，当该计算机程序被处理器执行时，用于执行前述任一方法实施例中终端设备的技术方案。
本申请实施例还提供一种计算机程序产品，包括程序指令，程序指令用于实现前述任一方法实施例中终端设备的技术方案。
本申请实施例还提供了一种芯片，包括：处理模块与通信接口，该处理模块能执行前述方法实施例中终端设备的技术方案。
进一步地，该芯片还包括存储模块(如，存储器)，存储模块用于存储指令，处理模块用于执行存储模块存储的指令，并且对存储模块中存储的指令的执行使得处理模块执行前述任一方法实施例中终端设备的技术方案。
本申请中，“至少两个”是指两个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系；在公式中，字符“/”，表示前后关联对象是一种“相除”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中，a，b，c可以是单个，也可以是多个。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。
可以理解的是，在本申请的实施例中，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，而不应对本申请的实施例的实施过程构成任何限定。

Claims (41)

  1. 一种资源选取方法，其特征在于，包括：
    终端设备获取第一信息，所述第一信息用于指示所述终端设备的数据传输状态；
    所述终端设备根据所述第一信息是否满足第一条件，确定资源选取方式。
  2. 根据权利要求1所述的方法，其特征在于，所述第一信息包括所述终端设备待传输数据的优先级、传输次数、重传次数、时延的至少一项。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一信息包括所述终端设备待传输数据的优先级，所述终端设备根据所述第一信息是否满足第一条件，确定资源选取方式，包括：
    所述终端设备根据所述终端设备待传输数据的优先级以及优先级门限，确定资源选取方式。
  4. 根据权利要求3所述的方法，其特征在于，所述终端设备根据所述终端设备待传输数据的优先级以及优先级门限，确定资源选取方式，包括：
    若所述终端设备待传输数据的优先级取值小于所述优先级门限，确定采用第一资源选取方式；或者
    若所述终端设备待传输数据的优先级取值大于或等于所述优先级门限，确定采用第二资源选取方式。
  5. 根据权利要求1或2所述的方法，其特征在于，所述第一信息包括所述终端设备待传输数据的传输次数，所述终端设备根据所述第一信息是否满足第一条件，确定资源选取方式，包括：
    所述终端设备根据所述终端设备待传输数据的传输次数以及传输次数门限，确定资源选取方式。
  6. 根据权利要求5所述的方法，其特征在于，所述终端设备根据所述终端设备待传输数据的传输次数以及传输次数门限，确定资源选取方式，包括：
    若所述终端设备待传输数据的传输次数大于所述传输次数门限，确定采用第一资源选取方式；或者
    若所述终端设备待传输数据的传输次数小于或等于所述传输次数门限，确定采用第二资源选取方式。
  7. 根据权利要求5或6所述的方法，其特征在于，所述方法还包括：
    所述终端设备确定所述待传输数据的传输次数。
  8. 根据权利要求7所述的方法，其特征在于，所述终端设备确定所述待传输数据的传输次数，包括：
    所述终端设备根据预配置信息或网络配置信息确定所述待传输数据的传输次数。
  9. 根据权利要求7或8所述的方法，其特征在于，所述终端设备确定所述待传输数据的传输次数，包括：
    所述终端设备根据所述待传输数据的优先级，确定所述待传输数据的传输次数。
  10. 根据权利要求1或2所述的方法，其特征在于，所述第一信息包括所述终端设备待传输数据的重传次数，所述终端设备根据所述第一信息是否满足第一条件，确定资源选取方式，包括：
    所述终端设备根据所述终端设备待传输数据的重传次数以及重传次数门限，确定资源选取方式。
  11. 根据权利要求10所述的方法，其特征在于，所述终端设备根据所述终端设备待传输数据的重传次数以及重传次数门限，确定资源选取方式，包括：
    若所述终端设备待传输数据的重传次数大于所述重传次数门限，确定采用第一资源选取方式；或者
    若所述终端设备待传输数据的重传次数小于或等于所述重传次数门限，确定采用第二资源选取方式。
  12. 根据权利要求1或2所述的方法，其特征在于，所述第一信息包括所述终端设备待传输数据的时延，所述终端设备根据所述第一信息是否满足第一条件，确定资源选取方式，包括：
    所述终端设备根据所述终端设备待传输数据的时延以及时延门限，确定资源选取方式。
  13. 根据权利要求12所述的方法，其特征在于，所述终端设备根据所述终端设备待传输数据的时延以及时延门限，确定资源选取方式，包括：
    若所述终端设备待传输数据的时延小于所述时延门限，确定采用第一资源选取方式；或者
    若所述终端设备待传输数据的时延大于或等于所述时延门限，确定采用第二资源选取方式。
  14. 根据权利要求1所述的方法，其特征在于，所述第一信息用于指示所述终端设备的侧行反馈是否被激活。
  15. 根据权利要求1或14所述的方法，其特征在于，所述终端设备根据所述第一信息是否满足第一条件，确定资源选取方式，包括：
    若所述第一信息指示所述终端设备的侧行反馈激活，所述终端设备确定采用第一资源选取方式；或者
    若所述第一信息指示所述终端设备的侧行反馈没有激活，所述终端设备确定采用第二资源选取方式。
  16. 根据权利要求1-15中任一项所述的方法，其特征在于，所述资源选取方式包括第一资源选取方式；
    所述第一资源选取方式是所述终端设备确定当前时刻之后的资源选择窗，从所述资源选择窗中随机选取传输资源；
    其中，所述当前时刻包括以下至少一种：数据到达的时刻，进行资源选择的时刻，进行资源重选的时刻，高层请求所述终端设备确定候选资源集合用于选取侧行传输资源的时刻。
  17. 根据权利要求1-16中任一项所述的方法，其特征在于，所述资源选取方式包括第二资源选取方式，
    所述第二资源选取方式是所述终端设备根据当前时刻之后的预设时段的侦听结果，确定候选资源集合，从所述候选资源集合中随机选取传输资源；
    其中，所述当前时刻包括以下至少一种：数据到达的时刻，进行资源选择的时刻，进行资源重选的时刻，或高层请求所述终端设备确定候选资源集合用于选取侧行传输资源的时刻。
  18. 根据权利要求16或17所述的方法，其特征在于，所述方法还包括：
    所述终端设备在使用所述随机选取的传输资源传输数据之前，进行重评估(re-evaluation)或资源抢占(pre-emption)检测。
  19. 一种资源选取装置，其特征在于，包括：
    获取模块，用于获取第一信息，所述第一信息用于指示终端设备的数据传输状态；
    确定模块，用于根据所述第一信息是否满足第一条件，确定资源选取方式。
  20. 根据权利要求19所述的装置，其特征在于，所述第一信息包括所述终端设备待传输数据的优先级、传输次数、重传次数、时延的至少一项。
  21. 根据权利要求19或20所述的装置，其特征在于，所述第一信息包括所述终端设备待传输数据的优先级，所述确定模块，具体用于根据所述终端设备待传输数据 的优先级以及优先级门限，确定资源选取方式。
  22. 根据权利要求21所述的装置，其特征在于，所述确定模块，具体用于：
    若所述终端设备待传输数据的优先级取值小于所述优先级门限，确定采用第一资源选取方式；或者
    若所述终端设备待传输数据的优先级取值大于或等于所述优先级门限，确定采用第二资源选取方式。
  23. 根据权利要求19或20所述的装置，其特征在于，所述第一信息包括所述终端设备待传输数据的传输次数，所述确定模块，具体用于根据所述终端设备待传输数据的传输次数以及传输次数门限，确定资源选取方式。
  24. 根据权利要求23所述的装置，其特征在于，所述确定模块，具体用于：
    若所述终端设备待传输数据的传输次数大于所述传输次数门限，确定采用第一资源选取方式；或者
    若所述终端设备待传输数据的传输次数小于或等于所述传输次数门限，确定采用第二资源选取方式。
  25. 根据权利要求23或24所述的装置，其特征在于，所述确定模块，还用于：
    确定所述待传输数据的传输次数。
  26. 根据权利要求25所述的装置，其特征在于，所述确定模块，具体用于：
    根据预配置信息或网络配置信息确定所述待传输数据的传输次数。
  27. 根据权利要求25或26所述的装置，其特征在于，所述确定模块，具体用于根据所述待传输数据的优先级，确定所述待传输数据的传输次数。
  28. 根据权利要求19或20所述的装置，其特征在于，所述第一信息包括所述终端设备待传输数据的重传次数，所述确定模块，具体用于根据所述终端设备待传输数据的重传次数以及重传次数门限，确定资源选取方式。
  29. 根据权利要求28所述的装置，其特征在于，所述确定模块，具体用于：
    若所述终端设备待传输数据的重传次数大于所述重传次数门限，确定采用第一资源选取方式；或者
    若所述终端设备待传输数据的重传次数小于或等于所述重传次数门限，确定采用第二资源选取方式。
  30. 根据权利要求19或20所述的装置，其特征在于，所述第一信息包括所述终端设备待传输数据的时延，所述确定模块，具体用于根据所述终端设备待传输数据的时延以及时延门限，确定资源选取方式。
  31. 根据权利要求30所述的装置，其特征在于，所述确定模块，具体用于：
    若所述终端设备待传输数据的时延小于所述时延门限，确定采用第一资源选取方式；或者
    若所述终端设备待传输数据的时延大于或等于所述时延门限，确定采用第二资源选取方式。
  32. 根据权利要求19所述的装置，其特征在于，所述第一信息用于指示所述终端设备的侧行反馈是否被激活。
  33. 根据权利要求19或32所述的装置，其特征在于，所述确定模块，具体用于：
    若所述第一信息指示所述终端设备的侧行反馈激活，确定采用第一资源选取方式；或者
    若所述第一信息指示所述终端设备的侧行反馈没有激活，确定采用第二资源选取方式。
  34. 根据权利要求19-33中任一项所述的装置，其特征在于，所述资源选取方式包括第一资源选取方式；
    所述第一资源选取方式是终端设备确定当前时刻之后的资源选择窗，从所述资源选择窗中随机选取传输资源；
    其中，所述当前时刻包括以下至少一种：数据到达的时刻，进行资源选择的时刻，进行资源重选的时刻，高层请求所述终端设备确定候选资源集合用于选取侧行传输资源的时刻。
  35. 根据权利要求19-34中任一项所述的装置，其特征在于，所述资源选取方式包括第二资源选取方式，
    所述第二资源选取方式是终端设备根据当前时刻之后的预设时段的侦听结果，确定候选资源集合，从所述候选资源集合中随机选取传输资源；
    其中，所述当前时刻包括以下至少一种：数据到达的时刻，进行资源选择的时刻，进行资源重选的时刻，或高层请求所述终端设备确定候选资源集合用于选取侧行传输资源的时刻。
  36. 根据权利要求34或35所述的装置，其特征在于，所述终端设备在使用所述随机选取的传输资源传输数据之前，进行重评估(re-evaluation)或资源抢占(pre-emption)检测。
  37. 一种电子设备，其特征在于，包括：存储器和处理器，所述存储器用于存储计算机程序，所述处理器用于从所述存储器中调用并运行所述计算机程序，使得所述处理器运行所述计算机程序执行如权利要求1-18中任一项所述的方法。
  38. 一种计算机存储介质，其特征在于，用于存储计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1-18中任一项所述的方法。
  39. 一种计算机程序，其特征在于，所述计算机程序被处理器执行时，用于执行如权利要求1-18中任一项所述的方法。
  40. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如权利要求1-18中任一项所述的方法。
  41. 一种芯片，其特征在于，包括：处理模块与通信接口，所述处理模块用于从存储器中调用并运行所述存储器中存储的计算机程序，执行如权利要求1-18中任一项所述的方法。
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