WO2022205437A1 - 部分侦听的资源选择方法、装置、设备及存储介质 - Google Patents

部分侦听的资源选择方法、装置、设备及存储介质 Download PDF

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Publication number
WO2022205437A1
WO2022205437A1 PCT/CN2021/085359 CN2021085359W WO2022205437A1 WO 2022205437 A1 WO2022205437 A1 WO 2022205437A1 CN 2021085359 W CN2021085359 W CN 2021085359W WO 2022205437 A1 WO2022205437 A1 WO 2022205437A1
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WO
WIPO (PCT)
Prior art keywords
time slot
resource
time
selection
listening
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PCT/CN2021/085359
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English (en)
French (fr)
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WO2022205437A9 (zh
Inventor
丁伊
赵振山
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Oppo广东移动通信有限公司
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Priority to PCT/CN2021/085359 priority Critical patent/WO2022205437A1/zh
Priority to CN202180082499.3A priority patent/CN116602041A/zh
Priority to BR112023017761A priority patent/BR112023017761A2/pt
Priority to KR1020237026883A priority patent/KR20230163359A/ko
Priority to AU2021439069A priority patent/AU2021439069A1/en
Priority to JP2023549110A priority patent/JP2024511270A/ja
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 EP21934094.0A priority patent/EP4266744A4/en
Priority to CN202311417499.1A priority patent/CN117377066A/zh
Publication of WO2022205437A1 publication Critical patent/WO2022205437A1/zh
Publication of WO2022205437A9 publication Critical patent/WO2022205437A9/zh
Priority to US18/353,818 priority patent/US11937220B2/en
Priority to US18/542,523 priority patent/US20240121763A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the field of communications technologies, and in particular, to a method, apparatus, device, and storage medium for resource selection for partial interception.
  • the terminal device can select transmission resources from the resource pool by listening.
  • a partial interception mechanism is introduced, mainly by limiting the number of time units for resource selection and the number of time units for resource interception, so as to achieve the purpose of energy saving.
  • Embodiments of the present application provide a method, apparatus, device, and storage medium for resource selection for partial interception.
  • the technical solution is as follows:
  • a method for selecting a resource for partial listening is provided, the method is executed by a terminal device, and the method includes:
  • the selection time slot is located after the target time, and the listening time slot is located before the target time;
  • a candidate resource set is determined from the available resources in the selection slot based on the listening result in the listening slot, and a transmission resource is selected from the candidate resource set.
  • a resource selection apparatus for partial listening comprising:
  • a time slot determination module configured to determine at least one selection time slot and at least one listening time slot; wherein, the selection time slot is located after the target time, and the listening time slot is located before the target time;
  • a resource selection module configured to determine a candidate resource set from the available resources in the selected time slot based on the listening result in the listening time slot, and select a transmission resource from the candidate resource set.
  • a terminal device includes a processor
  • the processor is configured to determine at least one selection time slot and at least one listening time slot; wherein, the selection time slot is located after the target time, and the listening time slot is located before the target time;
  • the processor is further configured to determine a candidate resource set from the available resources of the selected time slot based on the listening result in the listening time slot, and select a transmission resource from the candidate resource set.
  • a computer-readable storage medium where a computer program is stored in the storage medium, and the computer program is configured to be executed by a processor to implement the above-mentioned method for selecting a resource with partial interception .
  • a chip is provided, the chip includes a programmable logic circuit and/or program instructions, and when the chip is running, it is used to implement the above-mentioned resource selection method for partial snooping.
  • a computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and a processor loads from the computer program.
  • the computer-readable storage medium reads and executes the computer instructions, so as to implement the resource selection method of partial interception.
  • the positions of the selection time slot and the listening time slot are determined, so that the selection time slot is located after the target time, and the listening time slot is located before the target time.
  • a candidate resource set for data transmission is determined in the available resources of the time slot, there will be no time slot that has not been listened to, thereby ensuring the accuracy and reliability of resource selection.
  • FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a physical layer structure of SL communication provided by an embodiment of the present application.
  • 3 is a schematic diagram of time-frequency resource location reservation provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of resource interception and resource selection provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of resource selection for partial interception provided by an embodiment of the present application.
  • FIG. 6 is a flowchart of a method for selecting a resource for partial interception provided by an embodiment of the present application
  • FIG. 7 is a schematic diagram of determining a selection time slot and a listening time slot provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of determining a selection time slot and a listening time slot provided by another embodiment of the present application.
  • FIG. 9 is a schematic diagram of determining a selection time slot and a listening time slot provided by another embodiment of the present application.
  • FIG. 10 is a flowchart of a resource selection method for partial interception provided by another embodiment of the present application.
  • FIG. 11 is a block diagram of a resource selection apparatus for partial interception provided by an embodiment of the present application.
  • FIG. 12 is a block diagram of a resource selection apparatus for partial interception provided by another embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application.
  • the evolution of new business scenarios and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • FIG. 1 shows a schematic diagram of a network architecture provided by an embodiment of the present application.
  • the network architecture may include: a core network 11 , an access network 12 and a terminal device 13 .
  • the core network 11 includes several core network devices.
  • the functions of the core network equipment are mainly to provide user connections, manage users, and carry out services, and serve as the interface to the external network as the bearer network.
  • the core network of the 5G (5th Generation, fifth-generation mobile communication technology) NR system may include AMF (Access and Mobility Management Function) entities, UPF (User Plane Function, user plane function) Entity and SMF (Session Management Function, session management function) entity and other equipment.
  • AMF Access and Mobility Management Function
  • UPF User Plane Function
  • user plane function User plane function
  • SMF Session Management Function, session management function
  • the access network 12 includes several access network devices 14.
  • the access network in the 5G NR system may be called NG-RAN (New Generation-Radio Access Network, new generation radio access network).
  • the access network device 14 is a device deployed in the access network 12 to provide the terminal device 13 with a wireless communication function.
  • the access network equipment 14 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like.
  • the names of devices with access network device functions may be different, for example, in 5G NR systems, they are called gNodeBs or gNBs.
  • the name "Access Network Equipment” may change.
  • the above-mentioned apparatuses for providing a wireless communication function for the terminal equipment 13 are collectively referred to as access network equipment.
  • the number of terminal devices 13 is usually multiple, and one or more terminal devices 13 may be distributed in a cell managed by each access network device 14 .
  • the terminal device 13 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to the wireless modem, as well as various forms of user equipment, mobile stations (Mobile Station, MS) and many more.
  • the devices mentioned above are collectively referred to as terminal devices.
  • the access network equipment 14 and the core network equipment communicate with each other through some air technology, such as the NG interface in the 5G NR system.
  • the access network device 14 and the terminal device 13 communicate with each other through some air technology, such as a Uu interface.
  • the terminal device 13 and the terminal device 13 can communicate with each other through a direct communication interface (such as a PC5 interface) , correspondingly, the communication link established based on the direct-connected communication interface may be referred to as a direct-connected link or SL.
  • SL transmission is the direct communication data transmission between the terminal equipment and the terminal equipment through the side link. Different from the traditional cellular system in which the communication data is received or sent through the access network equipment, the SL transmission has the advantages of short delay and low overhead, etc.
  • the vehicle-to-vehicle communication in the V2X (vehicle to everything, Internet of Vehicles) scenario is taken as an example, and the SL technology can be applied to the scenario of direct communication between various terminal devices.
  • the terminal device in this application refers to any device that communicates using the SL technology.
  • the "5G NR system" in the embodiments of the present disclosure may also be referred to as a 5G system or an NR system, but those skilled in the art can understand its meaning.
  • the technical solutions described in the embodiments of the present disclosure may be applicable to the 5G NR system, and may also be applicable to the subsequent evolution system of the 5G NR system.
  • 3GPP defines two transmission modes: Mode A and Mode B.
  • Mode A The transmission resources of the terminal equipment are allocated by the access network equipment (such as the base station), and the terminal equipment transmits the communication data on the side link according to the transmission resources allocated by the access network equipment.
  • the terminal equipment may be allocated transmission resources for single transmission, or may be allocated transmission resources for semi-static transmission.
  • Mode B The terminal device selects transmission resources in the resource pool by itself to transmit communication data. Specifically, the terminal device may select transmission resources from the resource pool by means of listening, or select transmission resources from the resource pool by means of random selection.
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • PSCCH and PSSCH are transmitted in the same time slot.
  • the above-mentioned first sideline control information and second sideline control information may be two sideline control information with different functions.
  • the first sideline control information is carried in the PSCCH, and mainly includes a field related to resource interception, which is convenient for other terminal devices to perform resource exclusion and resource selection after decoding.
  • the PSSCH in addition to the data, it also carries the second sideline control information
  • the second sideline control information mainly includes a field related to data demodulation, which is convenient for other terminal devices to demodulate the data in the PSSCH.
  • the terminal device selects the transmission resources by itself to send data.
  • Resource reservation is the premise of resource selection.
  • Resource reservation means that the terminal device sends the first sideline control information in the PSCCH to reserve resources to be used next.
  • resource reservation within a TB Transport Block, transport block
  • resource reservation between TBs is supported as well as resource reservation between TBs.
  • the terminal device sends the first sideline control information, and uses the "Time resource assignment" and "Frequency resource assignment” fields to indicate the N time-frequency resources of the current TB (including the resources currently being sent).
  • the above N indicated time-frequency resources should be distributed in W time slots.
  • W is equal to 32.
  • the terminal device uses the first sideline control information sent in the PSCCH of retransmission 1 to indicate the time-frequency resource positions of retransmission 1 and retransmission 2, and retransmission 1 and retransmission 2 It is distributed in 32 time slots in the time domain.
  • the terminal device uses the "Resource reservation period (resource reservation period)" field to perform resource reservation between TBs when sending the first sideline control information.
  • the terminal device uses the "Time resource assignment” and “Frequency resource assignment” fields to indicate the time-frequency resource positions of the initial transmission and retransmission 1 of TB1, and record is ⁇ (t 1 , f 1 ), (t 2 , f 2 ) ⁇ .
  • t 1 and t 2 represent the time domain positions of the TB1 initial transmission and retransmission 1 resources
  • f 1 and f 2 represent the corresponding frequency domain positions.
  • the SCI (Sidelink Control Information, sidelink control information) also indicates time-frequency resources ⁇ (t1+100, f1), (t2+100, f2) ⁇ , these two resources are used for the transmission of TB2 initial transmission and retransmission 1.
  • the first sideline control information sent in TB1 retransmission 1 also uses the "Resource reservation period" field to reserve time-frequency resources for TB2 retransmission 1 and retransmission 2.
  • the possible values of the "Resource reservation period" field are 0, 1-99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000 milliseconds, compared to LTE (Long Term Evaluation , Long Term Evolution) V2X is more flexible.
  • LTE Long Term Evaluation , Long Term Evolution
  • the terminal device determines the possible values according to the resource pool used.
  • the value e in the resource pool configuration is the resource reservation period set M, exemplarily, e is less than or equal to 16.
  • the above-mentioned reservation between TBs can be activated or deactivated in units of resource pools.
  • the "Resource reservation period" field is not included in the first sideline control information.
  • the value of the "Resource reservation period” field used by the terminal device that is, the resource reservation period, will not change.
  • the "Resource reservation period” field reserves the resources of the next cycle for the transmission of another TB, so as to achieve periodic semi-persistent transmission.
  • the terminal device can obtain the first sideline control information sent by the other terminal device by listening to the PSCCH sent by the other terminal device, so as to know the resources reserved by the other terminal device.
  • the terminal device selects resources, it will exclude resources reserved by other terminal devices, thereby avoiding resource collision.
  • the terminal device In the NR V2X system, in the above mode B, the terminal device needs to select resources by itself.
  • the terminal device triggers resource selection or reselection at time slot n or time slot n is the time slot for the higher layer to trigger the physical layer to report the candidate resource set.
  • the terminal device determines T2 min from the set of values according to the priority of the data to be sent by the terminal device. For example, when the subcarrier spacing is 15 kHz, the terminal device determines T2 min from the set ⁇ 1, 5, 10, 20 ⁇ according to the priority of the data to be sent by the terminal device.
  • T2 min is greater than or equal to the remaining delay budget of the service, T2 is equal to the remaining delay budget of the service.
  • the remaining delay budget is the difference between the time corresponding to the data delay requirement and the current time. For example, for a packet arriving at time slot n, the delay requirement is 50 milliseconds. Suppose a time slot is 1 millisecond. If the current time is time slot n, the remaining delay budget is 50 milliseconds. If the current time is time slot n+20 , the remaining delay budget is 30 ms.
  • the terminal device performs resource monitoring from n-T0 to nT proc,0 , and the value of T0 is 100 or 1100 milliseconds.
  • T proc,0 is 1, 1, 2, and 4 time slots.
  • the terminal device will listen to the first sideline control information sent by other terminal devices in each time slot (except its own transmission time slot). After time slot n triggers resource selection or reselection, the terminal device uses n-T0 to the result of nT proc,0 resource snooping.
  • Step 1 The terminal device takes all the available resources belonging to the resource pool used by the terminal device in the resource selection window as the resource set A, and any resource in the set A is denoted as R(x, y), and x and y respectively indicate the frequency domain of the resource location and time domain location.
  • R(x, y) any resource in the set A
  • x and y respectively indicate the frequency domain of the resource location and time domain location.
  • the initial number of resources in set A be M total .
  • the terminal device excludes the resources in the resource set A according to the unlistened time slot (Step 1-1) in the resource listening window and/or the resource listening result (Step 1-2) in the resource listening window.
  • the terminal device determines whether the resource R(x,y) or a series of periodic resources corresponding to the resource R(x,y) is the same as the time slot determined according to the unlistened time slot in Step 1-1 or the time slot determined in Step 1-2.
  • the resources determined by the detected first sideline control information overlap, and if they overlap, the resource R(x, y) is excluded from the resource set A.
  • Step 1-1 If the terminal device sends data in time slot m within the listening window and does not listen, the terminal device will use time slot m and each allowed resource reservation period in the resource pool used by the terminal device to The resource reservation period is an interval, and the corresponding Q time slots are determined.
  • Tscal is equal to the value of T2 converted to milliseconds.
  • Prx is one of the resource reservation periods allowed by the resource pool used by the terminal device.
  • the terminal device does not listen in the time slot m, and performs resource exclusion in turn according to each resource reservation period in the resource reservation period set M in the resource pool configuration used.
  • a certain resource reservation period 1 assuming that the Q value is calculated as 2
  • the corresponding Q timeslots are the next 2 timeslots mapped from timeslot m in subfigure (a) of Figure 4 with the resource reservation period 1 as the interval Timeslots marked with horizontal shading.
  • the corresponding Q time slots are the resource reservation period 2 as the interval mapped from the time slot m in sub-figure (a) of FIG. 4 .
  • the time slot marked by the 1 dotted shadow down.
  • the terminal device will judge whether the Q time slots corresponding to each reservation period overlap with the resource R(x,y) or a series of periodic resources corresponding to the resource R(x,y), if they overlap, the Resource R(x,y) is excluded from A.
  • the terminal device may not perform the above Step 1-1.
  • Step 1-2 If the terminal device senses the first sideline control information transmitted in the PSCCH within the time slot m of the resource listening window, measure the SL-RSRP (Sidelink Reference Signal Received Power, Sidelink Reference Signal) of the PSCCH received power) or the SL-RSRP of the PSSCH scheduled by the PSCCH (ie, the SL-RSRP of the PSSCH sent in the same time slot as the PSCCH).
  • SL-RSRP Systemlink Reference Signal Received Power, Sidelink Reference Signal
  • the terminal device will use the time slot m and the detected first sideline control information carried in the resource prediction
  • the resource reservation period is used as an interval to determine the corresponding Q time slots.
  • the terminal equipment assumes that the first sideline control information of the same content has also been received in the Q time slots.
  • the terminal device will judge the first sideline control information received in the time slot m and the resources indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the Q pieces of the first sideline control information that are supposed to be received and the resource R.
  • sub-picture (b) in Figure 4 when the resource pool used by the terminal device activates the reservation between TBs, if the terminal device senses the first sideline control in PSCCH on the resource E(v,m) of time slot m information, the resource reservation period in the first sideline control information is Prx, and assuming that the Q value is calculated as 1, the terminal device will assume that the first sideline control information with the same content has also been received on the time slot m+Prx.
  • the terminal device will judge the first sideline control information received at time slot m and the resources indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the first sideline control information received at time slot m+Prx Whether 1, 2, 3, 4, 5, and 6 overlap with the resource R(x,y) or a series of periodic resources corresponding to the resource R(x,y), if they overlap and meet the RSRP condition, the resource set A will be selected. Exclude resource R(x,y).
  • the terminal equipment If the SL-RSRP measured by the terminal equipment is greater than the SL-RSRP threshold, and the resource pool used by the terminal equipment deactivates the resource reservation between TBs, the terminal equipment only determines the "Time" of the first sideline control information received in the time slot m. Whether the resource indicated by the "resource assignment” and “Frequency resource assignment” fields overlaps with the resource R(x,y) or a series of resources corresponding to the resource R(x,y), if it overlaps, the resource R is excluded from the resource set A ( x, y).
  • the terminal device when the resource pool used by the terminal device deactivates the reservation between TBs, if the terminal device senses the first side line in the PSCCH on the resource E(v,m) of the time slot m control information, the terminal device determines that the resources 1, 2, and 3 indicated by the "Time resource assignment" and "Frequency resource assignment" fields in the first sideline control information are the same as the resource R(x,y) or the resource R(x, y) Whether a series of corresponding periodic resources overlap, and if they overlap and satisfy the RSRP condition, the resource R(x, y) is excluded from the resource set A.
  • the SL-RSRP threshold is raised by 3dB, and Step 1 is performed again.
  • the physical layer reports the resource set A after resource exclusion to the upper layer as a candidate resource set.
  • Step 2 The upper layer randomly selects resources from the reported candidate resource set to send data. That is, the terminal device randomly selects resources from the candidate resource set to send data.
  • the above RSRP threshold is determined by the priority P1 carried in the PSCCH heard by the terminal device and the priority P2 of the data to be sent by the terminal device.
  • the configuration of the resource pool used by the terminal device includes an SL-RSRP threshold table, and the SL-RSRP threshold table includes the SL-RSRP thresholds corresponding to all priority combinations.
  • the configuration of the resource pool can be network configuration or pre-configured.
  • the SL-RSRP thresholds corresponding to different priority combinations are represented by ⁇ ij , where i in ⁇ ij is the priority The value of the priority level P1, j is the value of the priority level P2.
  • the terminal device When the terminal device detects the PSCCH sent by other terminal devices, obtains the priority P1 carried in the first sideline control information transmitted in the PSCCH and the priority P2 of the data to be sent, and the terminal device determines the SL by looking up Table 1. -RSRP threshold.
  • the terminal device uses the measured PSCCH-RSRP or the PSSCH-RSRP scheduled by the PSCCH to compare with the SL-RSRP threshold depends on the resource pool configuration of the resource pool used by the terminal device.
  • the configuration of the resource pool can be network configuration or pre-configured.
  • the configuration of the resource pool used by the terminal device includes the corresponding relationship between the priority and the above possible values, and the terminal device determines the value of X according to the priority of the data to be sent and the corresponding relationship.
  • the resource pool configuration can be either configured by the network or pre-configured.
  • the above introduction is an SL communication method in NR-V2X, that is, the terminal device autonomously selects transmission resources through resource listening, and performs data transmission on the sidelink by itself.
  • This SL communication method can also be applied to various SL communications such as direct communication between handheld terminals and direct communication between pedestrians and vehicles.
  • the above-mentioned method for the terminal equipment to autonomously select transmission resources through resource listening does not take into account the saving of power consumption.
  • the resource selection method for partial listening is an energy-saving and power-saving resource selection designed for power-sensitive terminals such as handheld terminals. In this way, the purpose of energy saving and power saving is achieved mainly by limiting the number of time units for resource selection and the number of time units for resource listening.
  • the so-called partial interception means that the terminal device determines the subframes to be intercepted in the resource interception window according to the at least Y subframes determined in the resource selection window and the interception bitmap in the resource pool configuration.
  • the resources in the at least Y subframes are excluded, and resources are selected from the resources that are not excluded to transmit data.
  • the determination of the above-mentioned at least Y subframes depends on the implementation of the terminal device, and Y should be greater than or equal to the configuration parameter minNumCandidateSF of the resource pool used by the terminal device.
  • the length of the above-mentioned listening bitmap is 10 bits.
  • the configuration parameter minNumCandidateSF represents the minimum number of candidate subframes.
  • the terminal device determines Y subframes from t 1 to t Y in the resource selection window, and the listening bitmap in the used resource pool configuration is (1001001000) 2 . Because the 1st, 4th, and 7th bits in the above bitmap are 1, the terminal device should listen to the resource listening window t 1 -Pstep to t Y -Pstep, t 1 -4*Pstep to t Y -4* Pstep and t 1 -7*Pstep to t Y -7*Pstep subframes sent by other terminal equipment in the SCI.
  • the above Pstep is 100 milliseconds. If the terminal equipment reuses the frequency band used by the TDD (Time Division Duplexing, time division duplexing) cellular system, Pstep should be adjusted according to the ratio of uplink and downlink subframes.
  • the terminal device triggers resource selection or reselection at time n, it will exclude the resources in the above Y subframes according to the listening results in the subframes determined in the above resource listening window, and finally remove the resources from the remaining Y subframes. Select the resource to send data in the resource.
  • the terminal device predicts that the next resource reselection may occur at time n, so as to determine the corresponding Y subframes, according to the Y subframes. frame determines the corresponding listening subframe. When the time reaches the listening subframe, the listening is performed, and when the time reaches the time n, resource selection or resource reselection is triggered to select resources from the Y subframes according to the listening result.
  • the standardization is discussing the resource selection mechanism for partial listening for NR SL transmission, starting from the partial listening resource selection mechanism for SL transmission in LTE V2X introduced above.
  • the maximum value of T2 is 100 milliseconds, and for any subframe y1 in the determined at least Y subframes, the maximum listening subframe determined according to the subframe is y1-Pstep in the time domain. And Pstep also corresponds to 100 milliseconds, so there is no situation that the definite listening subframe appears after time n.
  • the maximum value of T2 is the residual delay budget of the service.
  • T2 the residual delay budget of the service.
  • the present application determines the positions of the selection time slot and the listening time slot, so that the selection time slot is located after the target time, and the listening time slot is located before the target time, so as to ensure that When a candidate resource set for data transmission is determined from the available resources of the selected time slot, there is no time slot that has not been listened to, thereby ensuring the accuracy and reliability of resource selection.
  • FIG. 6 shows a flowchart of a resource selection method for partial listening provided by an embodiment of the present application.
  • the method can be applied to the network architecture shown in FIG. 1 , for example, the method can be executed by a terminal device.
  • the method may include the following steps (610-620):
  • Step 610 Determine at least one selection time slot and at least one listening time slot; wherein, the selection time slot is located after the target time, and the listening time slot is located before the target time.
  • the terminal device determines at least one selection time slot from the resource selection window.
  • the start time of the resource selection window can be expressed as n+T1
  • the end time of the resource selection window can be expressed as n+T2; way is determined.
  • the starting time of the resource selection window can be expressed as n+T1
  • the resource The end time of the selection window can be expressed as n+T2; wherein, T1 and T2 can be determined in the manner described above.
  • the terminal device determines the resource selection window n+T1 to n+T2, and selects the resource from the resource selection window. At least one selection slot is determined from n+T1 to n+T2.
  • the number of the selected time slots determined above is greater than or equal to a number threshold.
  • the above-determined number of selected time slots is greater than or equal to Y, and Y is greater than or equal to a number threshold.
  • the number threshold is configured by the network device, or pre-configured, or predefined in the communication protocol, or determined by the terminal device itself.
  • the selected time slot determined above is a continuous time slot, or a non-consecutive time slot.
  • the multiple selection time slots may be consecutive time slots (that is, there is no space between any group of adjacent selection time slots). spaced time slots), or the plurality of selected time slots may also be non-consecutive time slots (that is, there are at least one group of adjacent selected time slots with spaced time slots between them).
  • the above-mentioned group of adjacent selection time slots refers to arranging the above-mentioned multiple selection time slots in the time domain in chronological order, and the i-th selection time slot and the i+1-th selection time slot are a group of phases.
  • the adjacent selected time slot, i is a positive integer.
  • the terminal device determines at least one listening time slot according to the determined at least one selection time slot and the resource reservation period set in the resource configuration pool, and ensures that each determined listening time slot is before the target time.
  • the target time is any one of the following: the time when resource selection is triggered, the time when resource reselection is triggered, the time when the higher layer triggers the physical layer to report the candidate resource set, the time when the determination of the candidate resource set is triggered, and the time when the candidate resource set is determined , the time when the physical layer reports the candidate resource set to the upper layer.
  • the terminal device may determine at least one selection time unit and at least one listening time unit; wherein the selection time unit is located after the target time, and the listening time unit is located before the target time.
  • each selection time unit in the at least one selection time unit determined by the terminal device is located after the target moment; and/or, each listening time unit in the at least one listening time unit determined by the terminal device, are located before the target time.
  • the above-mentioned time unit may be any time-domain measurement unit, including but not limited to any of the following: frame, subframe, time slot, and subslot.
  • the target time mentioned in this application may be a time point, or may be a time unit to which the time point corresponding to the target time belongs.
  • the time unit may be a time slot
  • the target time may refer to the time slot to which the time point corresponding to the target time belongs, for example, the time slot may be referred to as a target time slot.
  • the A time unit/moment mentioned in this application is located before the B time unit/moment, which means that the A time unit/moment is less than or equal to the B time unit/moment; correspondingly, the A time unit/moment is located in the B time unit/moment After the time unit/moment, it means that the A time unit/moment is greater than or equal to the B time unit/moment.
  • the selection time slot mentioned above is located after the target time, it means that the selection time slot is greater than or equal to the target time; the listening time slot mentioned above is located before the target time, it means that the listening time slot is smaller than or equal to the target time equal to the target time.
  • the description about the sequence of two time units/moments in other places follows the explanation here, and will not be repeated in other places.
  • Step 620 Based on the listening result in the listening time slot, determine a candidate resource set from the available resources in the selected time slot, and select a transmission resource from the candidate resource set.
  • the terminal device excludes the available resources in the at least one selection time slot determined above based on the listening result in the at least one listening time slot determined above, constructs a candidate resource set, and selects from the candidate resource set.
  • the transport resource sends data.
  • the positions of the selection time slot and the listening time slot are determined, so that the selection time slot is located after the target time, and the detection time slot is located after the target time.
  • the listening time slot is located before the target time, so as to ensure that when the candidate resource set for data transmission is determined from the available resources of the selected time slot, there will be no time slot that has not been listened to, thus ensuring the accuracy of resource selection. and reliability.
  • the terminal device determines at least one selection time slot and at least one listening time slot by: determining at least one selection time slot from the resource selection window; for any selection time slot, the selection time slot The target candidate time slot corresponding to the slot is determined as the listening time slot; wherein, the target candidate time slot is located before the first moment, and the interval between the target candidate time slot and the selected time slot is an integer multiple of the resource reservation period, and the first moment is determined based on the target moment.
  • the interval duration between the target candidate time slot and the selected time slot is i times the resource reservation period, and i is the smallest positive integer that causes the target candidate time slot to be located before the first time instant.
  • the listening time slot determined according to ty is ty-Px, where Px is all values of the resource reservation period set in the resource pool configuration.
  • Px is all values of the resource reservation period set in the resource pool configuration.
  • the listening time slot is ty-i*Px, and i is the smallest positive integer satisfying that ty-i*Px is less than or equal to the first moment; if ty-i*Px is less than or equal to the first moment If Px is less than or equal to the first moment, the listening time slot is ty-Px.
  • the first moment is the target moment, or the first moment is the target moment minus the first offset.
  • the first offset is an offset determined from a plurality of candidate offsets based on the subcarrier spacing.
  • the first offset is T proc,0 or T proc,1 .
  • the first moment may also be a time point, or a time unit to which the time point corresponding to the first moment belongs. For example, when the target time is the target time slot n, suppose the first time is recorded as the first time slot A, and the first time slot A may be the target time slot n, or the target time slot n minus the first time slot A. Offset.
  • the selected time slots determined by the terminal device are t1, t2 and t3, and the values of the resource reservation period set in the resource pool configuration are P1 and P2, then according to the detection time determined by t1 and t2.
  • the listening time slots are t1-P1, t1-P2, t2-P1 and t2-P2. Since t3-P1 is greater than the target time slot n, the listening time slots determined according to t3 are t3-2*P1 and t3-P2.
  • the determined listening time slot is located before the target time, so as to ensure that the available resources in the selected time slot are excluded to construct candidate resources for data transmission During aggregation, there will be no time slots that have not been listened to, thereby ensuring the accuracy and reliability of resource selection.
  • the terminal device determines at least one selection time slot and at least one listening time slot by: determining the maximum threshold value of the selection time slot based on the target time; selecting the window from the resource based on the maximum threshold value Determine at least one selection time slot in the selection time slot, the selection time slot is located before the maximum threshold value; based on the selection time slot and the resource reservation period, the listening time slot is determined.
  • the terminal device adds the target time and the second offset to obtain the maximum threshold value of the selected time slot.
  • the terminal device adds the first time and the second offset to obtain the maximum threshold value of the selected time slot, where the first time is determined based on the target time.
  • the first moment is the target moment minus the first offset.
  • the second offset is determined based on the minimum value in the resource reservation period set in the resource pool configuration (for example, the second offset may be the minimum value in the resource reservation period set in the resource pool configuration, It can also be an integer multiple of the minimum value); or, the second offset is determined based on the minimum value of the resource reservation period in the resource pool used by the terminal device (for example, the second offset can be the resource used by the terminal device.
  • the minimum value of the resource reservation period in the pool may also be an integer multiple of the minimum value); or, the second offset is configured by the network device, or the second offset is pre-configured.
  • the first offset is an offset determined from a plurality of candidate offsets based on the subcarrier spacing.
  • the first offset is T proc,0 or T proc,1 .
  • T proc,0 and T proc,1 please refer to the introduction in the above content.
  • the terminal device when the terminal device determines the selection time slot according to the above method and ensures that the determined selection time slot is located before the maximum threshold value, the terminal device subtracts the determined selection time slot by an integer of the resource reservation period. times to get the listening time slot. For example, the terminal device can obtain the listening time slot by subtracting the resource reservation period from the determined selection time slot, or can obtain the listening time slot by subtracting k times the resource reservation period from the determined selection time slot, where k is Integer greater than 1.
  • the terminal device may The determined selection time slot is subtracted from the resource reservation period to obtain the listening time slot.
  • the second offset is k times the minimum value of the resource reservation period set in the resource pool configuration, or k times the minimum value of the resource reservation period in the resource pool used by the terminal device, or the network equipment
  • the terminal device can obtain the listening time slot by subtracting k times the resource reservation period from the determined selected time slot.
  • At least one selection time slot determined by the terminal device within the resource selection window should be less than or equal to the maximum threshold value.
  • the target time is the target time slot n
  • at least one selected time slot determined by the terminal device in the resource selection window should be less than or equal to the time slot n+W
  • this W is the second offset introduced above, which is It can be determined according to the minimum value of the resource reservation period set in the resource pool configuration, or can also be determined by the minimum value of the resource reservation period in the resource pool used by the terminal device, or configured or pre-configured by the network device.
  • the terminal device determines the listening time slot according to ty as ty-Px, where Px is all values of the resource reservation period set in the resource pool configuration. Or, for a certain selected time slot ty, the terminal device determines the listening time slot according to ty as ty-k*Px, where Px is all the values of the resource reservation period set in the resource pool configuration, and k is positive Integer or smallest positive integer such that ty-k*Px is before the target time.
  • the selection time slots determined by the terminal device are t1, t2 and t3, the values of the resource reservation period set in the resource pool configuration are P1 and P2, and the minimum value in the resource reservation period set is P1 and P2.
  • the value is P1.
  • the determined selected time slot is located before the maximum threshold value, so that the listening time determined based on the selected time slot and the resource reservation period is made
  • the time slot is located before the target time, so as to ensure that when the available resources in the selected time slot are excluded to construct a candidate resource set for data transmission, there will be no time slot that has not been listened to, thereby ensuring the accuracy and reliability of resource selection. sex.
  • the terminal device determines at least one selection slot and at least one listening slot by: determining at least one selection slot from a resource selection window; based on at least one selection slot and resource reservation Period, at least one listening time slot is determined; wherein, the target time is located after the last listening time slot and/or before the first selection time slot.
  • the listening time slot determined according to ty is ty-Px, where Px is all values of the resource reservation period set in the resource pool configuration.
  • the target time is greater than or equal to the last (maximum in time domain) listening time slot determined by the terminal device and/or less than or equal to the first (minimum in time domain) selection time slot determined by the terminal device.
  • the listening time slot determined according to ty is ty-k*Px, where Px is all values of the resource reservation period set in the resource pool configuration, and k is positive. Integer.
  • the target time is greater than or equal to the last (maximum in time domain) listening time slot determined by the terminal device and/or less than or equal to the first (minimum in time domain) selection time slot determined by the terminal device.
  • the target moment is the first selected time slot minus the third offset.
  • the third offset is an offset determined from a plurality of candidate offsets based on the subcarrier spacing.
  • the third offset is T proc,0 or T proc,1 , and the T proc,0 and T proc,1 can be referred to the description in the above content.
  • the terminal device continues to listen in the determined listening time slot; wherein, the second moment is any one of the following: the moment of triggering resource selection, the triggering resource The time of reselection, the time when the high layer triggers the physical layer to report the candidate resource set; the third time is any one of the following: the time when the candidate resource set is triggered to be determined, the time when the candidate resource set is determined, and the time when the physical layer reports the candidate resource set to the high layer .
  • the selection time slots determined by the terminal device are t1, t2 and t3, and the listening time slots determined by the terminal device are t1-P1, t2-P1, t3-P1, t1-P2, t2 -P2 and t3-P2.
  • the terminal device triggers resource selection or resource reselection or the higher layer triggers the physical layer to report the candidate resource set, and at this time, the time slot t3-P1 has not been listened to.
  • the terminal equipment reports the candidate resource set in time slot m.
  • the time slot m is greater than or equal to the determined last listening time slot t3-P1 and less than or equal to the determined first selection time slot t1.
  • time slot m is time slot t1-T proc,0 or time slot t1-T proc,1 .
  • the terminal equipment continues to listen on the listening time slot t3-P1 which is greater than or equal to time slot n and less than or equal to time slot m.
  • a timer (timer) is introduced, and the terminal device starts the timer at a second moment, where the second moment is any one of the following: the moment when the resource selection is triggered, the moment when the resource reselection is triggered, and the high layer triggers the physical layer to report the candidate Resource set time; when the timer reaches the set time (eg 0), perform any of the following operations: trigger to determine the candidate resource set, determine the candidate resource set, and report the candidate resource set to the higher layer by the physical layer.
  • the second moment is any one of the following: the moment when the resource selection is triggered, the moment when the resource reselection is triggered, and the high layer triggers the physical layer to report the candidate Resource set time; when the timer reaches the set time (eg 0), perform any of the following operations: trigger to determine the candidate resource set, determine the candidate resource set, and report the candidate resource set to the higher layer by the physical layer.
  • the setting of the timer ensures that the time when the physical layer reports the candidate resource set or the terminal device determines the candidate resource set or the terminal device triggers the determination of the candidate resource set is greater than or equal to the last listening time slot determined by the terminal device and/or less than or Equal to the first selection slot determined by the terminal equipment.
  • the target time (such as the time when the physical layer reports the candidate resource set or the terminal device determines the candidate resource set or the terminal device triggers the determination of the candidate resource set) is controlled so that the target time is located at the last listening time After the selected time slot and/or before the first selected time slot, it is ensured that when the available resources in the selected time slot are excluded to construct a candidate resource set for data transmission, there will be no time slots that have not been listened to, thereby ensuring that Accuracy and reliability of resource selection.
  • the above step 620 may include the following sub-steps:
  • the first sideline control information is carried in the PSCCH, and mainly includes fields related to resource interception, which is convenient for other terminal devices to perform resource exclusion and resource selection after decoding.
  • the channel quality can be RSRP of SL, or RSRQ (Reference Signal Receiving Quality, reference signal receiving quality) of SL, SINR (Signal to Interference plus Noise Ratio, signal to interference plus noise ratio), etc., which are not limited in this application. .
  • whether the terminal device uses the measured channel quality of the PSCCH or the channel quality of the PSSCH scheduled by the PSCCH to compare with the channel quality threshold depends on the resource pool configuration of the resource pool used by the terminal device.
  • the configuration of the resource pool can be network configuration or pre-configured.
  • the resource pool used by the terminal device activates the resource reservation between TBs, then according to the target listening time slot and the resource reservation period carried in the first sideline control information, determine Q time slots, Q is a positive integer;
  • the terminal device determines Q time slots located after the target listening time slot with the resource reservation period carried in the first sideline control information as an interval.
  • the first time slot in the Q time slots is the target listening time slot+resource reservation period
  • the second time slot in the Q time slots is the target listening time slot+2*resource reservation cycle, and so on.
  • the terminal device takes the determined available resource in at least one selected time slot as the resource set A, and any available resource in the resource set A is denoted as R(x, y).
  • x and y indicate the frequency domain location and time domain location of the resource, respectively.
  • the terminal device determines Q time slots, and the terminal device assumes that it has also received the same content in the above Q time slots.
  • the first sideline control information the terminal device will determine the time-frequency resources in the first sideline control information received in the target listening time slot and the Q first sideline control information assumed to be received in the Q time slots Whether the time-frequency resources indicated by the indication fields (including the "Time resource assignment” and "Frequency resource assignment” fields) exist, whether the available resource R(x,y) or the periodic resource corresponding to the available resource R(x,y) exists Overlapping, if there is overlap, the available resource R(x,y) is excluded from the selection slot. Optionally, if there is no overlap, the available resource R(x,y) is reserved.
  • a candidate resource set is obtained, and a transmission resource is selected from the candidate resource set.
  • the physical layer obtains a candidate resource set based on the exclusion result of the available resources in the selected time slot, and the physical layer reports the candidate resource set to a higher layer.
  • the upper layer randomly selects transmission resources from the candidate resource set to send data.
  • Prx is the resource reservation period carried in the first sideline control information
  • Tscal is any of the following:
  • the difference between the last selected time slot and the second time slot is converted into a value after milliseconds, and the second time is any one of the following: the time when the resource selection is triggered, the time when the resource reselection is triggered, and the higher layer triggers the physical layer
  • the moment when the candidate resource set is reported for example, t3-n in Figure 7 or Figure 8 is converted into milliseconds;
  • the difference between the last selected time slot and the third time slot is converted into a value after milliseconds, and the third time is any of the following: the time when the candidate resource set is triggered, the time when the candidate resource set is determined, the physical layer The moment when the candidate resource set is reported to the upper layer; for example, t3-m in Figure 9 is converted into milliseconds;
  • This situation corresponds to the solution of determining the target candidate time slot as the listening time slot described in the above embodiments.
  • the listening time slot determined by this scheme if the listening time slot is determined by using the resource reservation period P, it is assumed that the resource reservation period in the first sideline control information heard in the listening time slot is the resource reservation period If it is equal to P, then Q is directly equal to i used to determine the listening time slot.
  • the first condition includes at least one of the following:
  • the fourth time determined based on the target listening time slot is located after the last listening time slot determined by the terminal device, and the fourth time is equal to the sum of the target listening time slot and Prx, or, the fourth time is equal to the target listening time
  • the sum of time slot and Prxlg, Prxlg is the number after Prx is converted into logical time slot;
  • Prxlg after Prx is converted into logical time slots in the above (1) exemplarily, it can be as follows: Assuming that one time slot is equal to 1 millisecond and Prx is 5 milliseconds, among these 5 time slots, there are 2 time slots It may be the downlink time slot in TDD mode or the time slot for sending synchronization signals. These time slots are not included in the resource pool of SL, so it is necessary to convert the 5 milliseconds represented by Prx into 3 time slots of logical time slots, namely Prxlg.
  • step 620 may further include the following sub-steps: if the measured channel quality is greater than the channel quality threshold, and the resource pool used by the terminal device deactivates the resource reservation between TBs, if the If the time-frequency resource indicated by the time-frequency resource indication field in the first sideline control information of the , overlaps the available resource or the periodic resource corresponding to the available resource, the available resource is excluded from the selection time slot.
  • the terminal device determines the time frequency in the first sideline control information received in the target listening time slot. For the time-frequency resources indicated by the resource indication fields (including the "Time resource assignment” and “Frequency resource assignment” fields), whether the available resource R(x,y) or the periodic resource corresponding to the available resource R(x,y) is There is overlap, and if there is overlap, the available resource R(x,y) is excluded from the selection slot. Optionally, if there is no overlap, the available resource R(x,y) is reserved.
  • the channel quality threshold value is raised by a set value, and the measured channel quality and the channel quality threshold value are compared again, Re-exclude all available resources in the determined at least one selected time slot, until the number of remaining resources is greater than or equal to the threshold value, and determine the remaining resources as a candidate resource set.
  • the threshold value is determined based on the total number of available resources contained in the selected time slot. For example, the total number of available resources included in the selected time slot is M total , and the threshold value is M total *X%.
  • the possible values of X are ⁇ 20, 35, 50 ⁇ .
  • the configuration of the resource pool used by the terminal device includes the corresponding relationship between the priority and the above possible values, and the terminal device determines the value of X according to the priority of the data to be sent and the corresponding relationship.
  • the resource pool configuration can be either configured by the network or pre-configured.
  • FIG. 10 shows a flowchart of a resource selection method for partial listening provided by another embodiment of the present application.
  • the method can be applied to the network architecture shown in FIG. 1 , for example, the method can be executed by a terminal device.
  • the method may include the following steps (1010-1050):
  • Step 1010 Determine at least one selection time slot and at least one listening time slot.
  • the selection time slot is located after the target time and the listening time slot is located before the target time.
  • the number of the selected time slots determined above is greater than or equal to a number threshold.
  • the above-determined number of selected time slots is greater than or equal to Y, and Y is greater than or equal to a number threshold.
  • the number threshold is configured by the network device, or pre-configured, or predefined in the communication protocol, or determined by the terminal device itself.
  • the multiple selected time slots are consecutive time slots, or non-consecutive time slots.
  • Step 1020 for any available resource in the selected time slot, if the first sideline control information transmitted in the PSCCH is sensed in the target listening time slot, measure the channel quality of the PSCCH or the PSSCH scheduled by the PSCCH.
  • Step 1030 if the measured channel quality is greater than the channel quality threshold, and the resource pool used by the terminal device activates resource reservation between TBs, then according to the target listening time slot and the resource reservation period carried in the first sideline control information, Determine Q time slots, where Q is a positive integer.
  • Prx is the resource reservation period carried in the first sideline control information
  • Tscal is any of the following:
  • the difference between the last selected time slot and the second time slot is converted into a value after milliseconds, and the second time is any one of the following: the time when the resource selection is triggered, the time when the resource reselection is triggered, and the higher layer triggers the physical layer The moment when the candidate resource set is reported;
  • the difference between the last selected time slot and the third time slot is converted into a value after milliseconds, and the third time is any of the following: the time when the candidate resource set is triggered, the time when the candidate resource set is determined, the physical layer The moment when the candidate resource set is reported to the upper layer;
  • the first condition includes at least one of the following:
  • the fourth time determined based on the target listening time slot is located after the last listening time slot determined by the terminal device, and the fourth time is equal to the sum of the target listening time slot and Prx, or, the fourth time is equal to the target listening time
  • the sum of time slot and Prxlg, Prxlg is the number after Prx is converted into logical time slot;
  • Step 1040 if the first sideline control information received in the target listening time slot and the time frequency indicated by the time-frequency resource indication field in the Q first sideline control information received in the Q time slots are assumed to be the time-frequency If there is overlap with the available resource or the periodic resource corresponding to the available resource, the available resource is excluded from the selection time slot.
  • Step 1050 Obtain a candidate resource set based on the exclusion result of the available resources in the selected time slot, and select a transmission resource from the candidate resource set.
  • the method in this embodiment further includes the following steps: if the measured channel quality is greater than the channel quality threshold, and the resource pool used by the terminal device deactivates the resource reservation between TBs, then if the channel quality is received in the target listening time slot If the time-frequency resource indicated by the time-frequency resource indication field in the first sideline control information of the , overlaps the available resource or the periodic resource corresponding to the available resource, the available resource is excluded from the selection time slot.
  • the channel quality threshold value is raised by a set value, and the measured channel quality and the channel quality threshold value are compared again, Re-exclude all available resources in the determined at least one selected time slot, until the number of remaining resources is greater than or equal to the threshold value, and determine the remaining resources as a candidate resource set.
  • FIG. 11 shows a block diagram of a resource selection apparatus for partial listening provided by an embodiment of the present application.
  • the apparatus has the function of implementing the above method example, and the function may be implemented by hardware or by executing corresponding software in hardware.
  • the apparatus may be the terminal equipment described above, or may be provided in the terminal equipment.
  • the apparatus 1100 may include: a time slot determination module 1110 and a resource selection module 1120 .
  • the time slot determination module 1110 is configured to determine at least one selection time slot and at least one listening time slot, wherein the selection time slot is located after the target time, and the listening time slot is located before the target time.
  • the resource selection module 1120 is configured to determine a candidate resource set from the available resources of the selected time slot based on the listening result in the listening time slot, and select a transmission resource from the candidate resource set.
  • the target time is any one of the following: the time when resource selection is triggered; the time when resource reselection is triggered; the time when the high layer triggers the physical layer to report the candidate resource set; the triggering determination of the candidate resource set the time when the candidate resource set is determined; the time when the physical layer reports the candidate resource set to the upper layer.
  • the time slot determination module 1110 is configured to: determine the at least one selected time slot from the resource selection window; for any of the selected time slots, determine the target corresponding to the selected time slot The candidate time slot is determined as the listening time slot; wherein, the target candidate time slot is located before the first moment, and the interval time between the target candidate time slot and the selected time slot is an integer multiple of the resource reservation period, and the The first moment is determined based on the target moment.
  • the interval duration between the target candidate time slot and the selected time slot is i times the resource reservation period, and the i is such that the target candidate time slot is located at the first moment.
  • the first moment is the target moment, or the first moment is the target moment minus a first offset.
  • the first offset is an offset determined from a plurality of candidate offsets based on the subcarrier spacing.
  • the time slot determination module 1110 is configured to: determine the maximum threshold value of the selected time slot based on the target time; determine the maximum threshold value from the resource selection window based on the maximum threshold value at least one selection time slot, the selection time slot is located before the maximum threshold value; based on the selection time slot and the resource reservation period, the listening time slot is determined.
  • the time slot determination module 1110 is configured to: add the target time and the second offset to obtain the maximum threshold value of the selected time slot.
  • the second offset is determined based on the minimum value in the resource reservation period set in the resource pool configuration; or, the second offset is based on the resource reservation in the resource pool used by the terminal device.
  • the minimum value of the period is determined; or, the second offset is configured by the network device, or the second offset is pre-configured.
  • the time slot determination module 1110 is configured to subtract an integer multiple of the resource reservation period from the selected time slot to obtain the listening time slot.
  • the time slot determining module 1110 is configured to: determine the at least one selection time slot from a resource selection window; and determine the at least one selection time slot based on the at least one selection time slot and a resource reservation period One listening time slot; wherein, the target time is located after the last listening time slot and/or before the first selection time slot.
  • the target moment is the first selected time slot minus a third offset.
  • the third offset is an offset determined from a plurality of candidate offsets based on the subcarrier spacing.
  • the apparatus 1100 further includes: an information listening module 1130 .
  • the information listening module 1130 is configured to continue to listen in the determined listening time slot between the second time and the third time.
  • the second moment is any one of the following: the moment when resource selection is triggered, the moment when resource reselection is triggered, and the moment when the higher layer triggers the physical layer to report the candidate resource set;
  • the third moment is any one of the following: Trigger the time when the candidate resource set is determined, the time when the candidate resource set is determined, and the time when the physical layer reports the candidate resource set to the higher layer.
  • the apparatus 1110 further includes: a timer starting module 1140 and an operation executing module 1150 .
  • the timer starting module 1140 is configured to start the timer at a second time, where the second time is any one of the following: the time when resource selection is triggered, the time when resource reselection is triggered, and the higher layer triggers the physical layer to report the candidate resource set moment.
  • the operation execution module 1150 is configured to perform any one of the following operations when the timer reaches the set time: triggering and determining the candidate resource set, determining the candidate resource set, and reporting the candidate resource set to the higher layer by the physical layer .
  • the number of the selected time slots is greater than or equal to a number threshold; wherein, the number threshold is configured by the network device, or pre-configured, or predefined in a communication protocol, or determined by the terminal device.
  • the selected time slots are consecutive time slots, or, non-consecutive time slots.
  • the resource selection module 1120 is used to:
  • the first sidelink control information transmitted in the physical sidelink control channel PSCCH is sensed in the target listening timeslot, measure the PSCCH or the PSCCH schedule.
  • the resource pool used by the terminal device activates resource reservation between transport blocks TB, then according to the target listening time slot and the information carried in the first sideline control information Resource reservation period, determining Q timeslots, where Q is a positive integer;
  • the available resource is excluded from the selection time slot;
  • the candidate resource set is obtained, and transmission resources are selected from the candidate resource set.
  • the Q 1;
  • Tscal is any of the following: the difference between the end time of the resource selection window and the target time is converted into milliseconds The remaining delay budget of the service; the remaining delay budget of the service is converted into a value after milliseconds; the difference between the last selected time slot and the second time slot is converted into a value after milliseconds, and the second time is Any one of the following: the moment when resource selection is triggered, the moment when resource reselection is triggered, and the moment when the higher layer triggers the physical layer to report the candidate resource set; the difference between the last selection slot and the third moment is converted into milliseconds later value, the third time is any one of the following: the time when the candidate resource set is triggered, the time when the candidate resource set is determined, the time when the physical layer reports the candidate resource set to the upper layer; the last time slot is selected The difference with the first selection time slot is converted into the value after milli
  • the first condition includes at least one of the following:
  • the fourth time instant determined based on the target listening time slot is located after the last listening time slot determined by the terminal device, and the fourth time instant is equal to the sum of the target listening time slot and Prx, or, the The fourth moment is equal to the sum of the target listening time slot and Prxlg, and Prxlg is the number after Prx is converted into a logical time slot;
  • Prx is less than Tscal.
  • the resource selection module 1120 is further configured to: if the measured channel quality is greater than the channel quality threshold, and the resource pool used by the terminal device deactivates the resource reservation between TBs, if the If the time-frequency resource indicated by the time-frequency resource indication field in the first sideline control information received in the target listening time slot overlaps with the available resource or the periodic resource corresponding to the available resource, then The available resources are excluded from the selection slot.
  • the resource selection module 1120 is further configured to: if the number of the remaining resources after the resource exclusion in the selected time slot is less than a threshold value, then raise the channel quality threshold by a set value, and Re-comparing the measured channel quality with the channel quality threshold, and re-exclude all available resources in the determined at least one selected time slot, until the number of remaining resources is greater than or equal to the When the threshold value is set, the remaining resources are determined as the candidate resource set; wherein, the threshold value is determined based on the total number of available resources included in the selected time slot.
  • the device provided in the above embodiment realizes its functions, only the division of the above functional modules is used as an example for illustration. In practical applications, the above functions can be allocated to different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • FIG. 13 shows a schematic structural diagram of a terminal device 130 provided by an embodiment of the present application.
  • the terminal device can be used to perform the above-mentioned resource selection method for partial listening.
  • the terminal device 130 may include: a processor 131 , a receiver 132 , a transmitter 133 , a memory 134 and a bus 135 .
  • the processor 131 includes one or more processing cores, and the processor 131 executes various functional applications and information processing by running software programs and modules.
  • the receiver 132 and the transmitter 133 may be implemented as a transceiver 136, which may be a communication chip.
  • the memory 134 is connected to the processor 131 through the bus 135 .
  • the memory 134 can be used to store a computer program, and the processor 131 is used to execute the computer program, so as to implement various steps performed by the terminal device in the above method embodiments.
  • the memory 134 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, and the volatile or non-volatile storage device includes but is not limited to: RAM (Random-Access Memory, random access memory) and ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory, Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory, Electrically Erasable Programmable Read-Only Memory) memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory), DVD (Digital Video Disc, high-density digital video disc) or other optical storage, tape cassettes, magnetic tapes, magnetic disks storage or other magnetic storage devices. in:
  • the processor 131 is configured to determine at least one selection time slot and at least one listening time slot; wherein, the selection time slot is located after the target time, and the listening time slot is located before the target time;
  • the processor 131 is further configured to, based on the listening result in the listening time slot, determine a candidate resource set from the available resources in the selected time slot, and select a transmission resource from the candidate resource set.
  • the target time is any one of the following: the time when resource selection is triggered; the time when resource reselection is triggered; the time when the high layer triggers the physical layer to report the candidate resource set; the triggering determination of the candidate resource set the time when the candidate resource set is determined; the time when the physical layer reports the candidate resource set to the upper layer.
  • the processor 131 is configured to: determine the at least one selection time slot from the resource selection window; for any of the selection time slots, select the target candidate time slot corresponding to the selection time slot , which is determined as the listening time slot; wherein, the target candidate time slot is located before the first moment, and the interval between the target candidate time slot and the selection time slot is an integer multiple of the resource reservation period, and the first moment is determined based on the target moment.
  • the interval duration between the target candidate time slot and the selected time slot is i times the resource reservation period, and the i is such that the target candidate time slot is located at the first moment.
  • the first moment is the target moment, or the first moment is the target moment minus a first offset.
  • the first offset is an offset determined from a plurality of candidate offsets based on the subcarrier spacing.
  • the processor 131 is configured to: determine a maximum threshold value of the selection time slot based on the target moment; determine the at least one selection from a resource selection window based on the maximum threshold value time slot, the selected time slot is located before the maximum threshold value; based on the selected time slot and the resource reservation period, the listening time slot is determined.
  • the processor 131 is configured to: add the target time and the second offset to obtain the maximum threshold value of the selected time slot.
  • the second offset is determined based on the minimum value in the resource reservation period set in the resource pool configuration; or, the second offset is based on the resource reservation in the resource pool used by the terminal device.
  • the minimum value of the period is determined; or, the second offset is configured by the network device, or the second offset is pre-configured.
  • the processor 131 is configured to subtract an integer multiple of the resource reservation period from the selected time slot to obtain the listening time slot.
  • the processor 131 is configured to: determine the at least one selection time slot from a resource selection window; and determine the at least one listening time slot based on the at least one selection time slot and a resource reservation period time slot; wherein, the target time is located after the last listening time slot and/or before the first selection time slot.
  • the target moment is the first selected time slot minus a third offset.
  • the third offset is an offset determined from a plurality of candidate offsets based on the subcarrier spacing.
  • the processor 131 is further configured to continue to listen in the determined listening time slot between the second time and the third time.
  • the second moment is any one of the following: the moment when resource selection is triggered, the moment when resource reselection is triggered, and the moment when the higher layer triggers the physical layer to report the candidate resource set;
  • the third moment is any one of the following: Trigger the time when the candidate resource set is determined, the time when the candidate resource set is determined, and the time when the physical layer reports the candidate resource set to the higher layer.
  • the processor 131 is further configured to start a timer at a second moment, where the second moment is any one of the following: a moment when resource selection is triggered, a moment when resource reselection is triggered, and a higher layer triggers the physical layer to report the Describe the moment of the candidate resource set.
  • the processor 131 is further configured to perform any one of the following operations when the timer reaches a set time: trigger to determine the candidate resource set, determine the candidate resource set, and report the candidate resource to the higher layer by the physical layer gather.
  • the number of the selected time slots is greater than or equal to a number threshold; wherein, the number threshold is configured by the network device, or pre-configured, or predefined in a communication protocol, or determined by the terminal device.
  • the selected time slots are consecutive time slots, or, non-consecutive time slots.
  • the processor 131 is used to:
  • the first sidelink control information transmitted in the physical sidelink control channel PSCCH is sensed in the target listening timeslot, measure the PSCCH or the PSCCH schedule.
  • the resource pool used by the terminal device activates resource reservation between transport blocks TB, then according to the target listening time slot and the information carried in the first sideline control information Resource reservation period, determining Q timeslots, where Q is a positive integer;
  • the available resource is excluded from the selection time slot;
  • the candidate resource set is obtained, and transmission resources are selected from the candidate resource set.
  • the Q 1;
  • Tscal is any of the following: the difference between the end time of the resource selection window and the target time is converted into milliseconds The remaining delay budget of the service; the remaining delay budget of the service is converted into a value after milliseconds; the difference between the last selected time slot and the second time slot is converted into a value after milliseconds, and the second time is Any one of the following: the moment when resource selection is triggered, the moment when resource reselection is triggered, and the moment when the higher layer triggers the physical layer to report the candidate resource set; the difference between the last selection slot and the third moment is converted into milliseconds later value, the third time is any one of the following: the time when the candidate resource set is triggered, the time when the candidate resource set is determined, the time when the physical layer reports the candidate resource set to the upper layer; the last time slot is selected The difference with the first selection time slot is converted into the value after milli
  • the first condition includes at least one of the following:
  • the fourth time instant determined based on the target listening time slot is located after the last listening time slot determined by the terminal device, and the fourth time instant is equal to the sum of the target listening time slot and Prx, or, the The fourth moment is equal to the sum of the target listening time slot and Prxlg, and Prxlg is the number after Prx is converted into a logical time slot;
  • Prx is less than Tscal.
  • the processor 131 is further configured to: if the measured channel quality is greater than the channel quality threshold, and the resource pool used by the terminal device deactivates the resource reservation between TBs, if the If the time-frequency resource indicated by the time-frequency resource indication field in the first sideline control information received in the target listening time slot overlaps with the available resource or the periodic resource corresponding to the available resource, the The available resources are excluded from the selected time slot.
  • the processor 131 is further configured to: if the number of remaining resources in the selected time slot after resource exclusion is less than a threshold value, raise the channel quality threshold by a set value, and reset the channel quality threshold.
  • the measured channel quality is compared with the channel quality threshold, and all available resources in the determined at least one selected time slot are re-excluded until the number of remaining resources is greater than or equal to the threshold
  • the threshold value is determined based on the total number of available resources included in the selected time slot.
  • Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is configured to be executed by a processor of a terminal device to implement the above-mentioned method for selecting a resource for partial interception.
  • the computer-readable storage medium may include: ROM (Read-Only Memory, read-only memory), RAM (Random-Access Memory, random access memory), SSD (Solid State Drives, solid-state hard disk), or an optical disk.
  • the random access memory may include ReRAM (Resistance Random Access Memory, resistive random access memory) and DRAM (Dynamic Random Access Memory, dynamic random access memory).
  • An embodiment of the present application further provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on a terminal device, it is used to implement the above-mentioned resource selection method for partial interception.
  • Embodiments of the present application further provide a computer program product or computer program, where the computer program product or computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium, and the processor of the terminal device can download the computer from the computer.
  • the readable storage medium reads and executes the computer instructions, so as to implement the resource selection method of partial interception.
  • 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.
  • plural refers to two or more.
  • “And/or”, which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone.
  • the character “/” generally indicates that the associated objects are an "or" relationship.
  • the numbering of the steps described in this document only exemplarily shows a possible execution sequence between the steps.
  • the above steps may also be executed in different order, such as two different numbers.
  • the steps are performed at the same time, or two steps with different numbers are performed in a reverse order to that shown in the figure, which is not limited in this embodiment of the present application.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

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Abstract

本申请公开了一种部分侦听的资源选择方法、装置、设备及存储介质，涉及通信技术领域。所述方法包括：确定至少一个选择时隙和至少一个侦听时隙；其中，选择时隙位于目标时刻之后，且侦听时隙位于目标时刻之前；基于侦听时隙中的侦听结果，从选择时隙的可用资源中确定候选资源集合，从候选资源集合中选择传输资源。本申请在部分侦听的资源选择过程中，通过对选择时隙和侦听时隙的位置进行确定，以使得选择时隙位于目标时刻之后，侦听时隙位于目标时刻之前，这样就能够保证在从选择时隙的可用资源中确定用于数据传输的候选资源集合时，不会存在还未侦听的时隙，从而保证资源选择的准确性和可靠性。

Description

部分侦听的资源选择方法、装置、设备及存储介质 技术领域
本申请实施例涉及通信技术领域，特别涉及一种部分侦听的资源选择方法、装置、设备及存储介质。
背景技术
在SL(Sidelink，侧行链路)通信中，终端设备可以通过侦听方式在资源池中选择传输资源。
为了节约终端设备的功耗，引入了部分侦听机制，主要通过限制进行资源选择的时间单元数目与进行资源侦听的时间单元数目，以达到节能省电的目的。
目前，针对NR(New Radio，新空口)系统中部分侦听机制下的资源选择方法，还需进一步研究。
发明内容
本申请实施例提供了一种部分侦听的资源选择方法、装置、设备及存储介质。所述技术方案如下：
根据本申请实施例的一个方面，提供了一种部分侦听的资源选择方法，所述方法由终端设备执行，所述方法包括：
确定至少一个选择时隙和至少一个侦听时隙；其中，所述选择时隙位于目标时刻之后，且所述侦听时隙位于所述目标时刻之前；
基于所述侦听时隙中的侦听结果，从所述选择时隙的可用资源中确定候选资源集合，从所述候选资源集合中选择传输资源。
根据本申请实施例的一个方面，提供了一种部分侦听的资源选择装置，所述装置包括：
时隙确定模块，用于确定至少一个选择时隙和至少一个侦听时隙；其中，所述选择时隙位于目标时刻之后，且所述侦听时隙位于所述目标时刻之前；
资源选择模块，用于基于所述侦听时隙中的侦听结果，从所述选择时隙的可用资源中确定候选资源集合，从所述候选资源集合中选择传输资源。
根据本申请实施例的一个方面，提供了一种终端设备，所述终端设备包括处理器；
所述处理器，用于确定至少一个选择时隙和至少一个侦听时隙；其中，所述选择时隙位于目标时刻之后，且所述侦听时隙位于所述目标时刻之前；
所述处理器，还用于基于所述侦听时隙中的侦听结果，从所述选择时隙的可用资源中确定候选资源集合，从所述候选资源集合中选择传输资源。
根据本申请实施例的一个方面，提供了一种计算机可读存储介质，所述存储介质中存储有计算机程序，所述计算机程序用于被处理器执行，以实现上述部分侦听的资源选择方法。
根据本申请实施例的一个方面，提供了一种芯片，所述芯片包括可编程逻辑电路和/或程序指令，当所述芯片运行时，用于实现上述部分侦听的资源选择方法。
根据本申请实施例的一个方面，提供了一种计算机程序产品或计算机程序，所述计算机程序产品或计算机程序包括计算机指令，所述计算机指令存储在计算机可读存储介质中，处理器从所述计算机可读存储介质读取并执行所述计算机指令，以实现上述部分侦听的资源选择方法。
本申请实施例提供的技术方案可以包括如下有益效果：
在部分侦听的资源选择过程中，通过对选择时隙和侦听时隙的位置进行确定，以使得选择时隙位于目标时刻之后，侦听时隙位于目标时刻之前，这样就能够保证从选择时隙的可用资源中确定用于数据传输的候选资源集合时，不会存在还未侦听的时隙，从而保证资源选择的准确性和可靠性。
附图说明
图1是本申请一个实施例提供的网络架构的示意图；
图2是本申请一个实施例提供的SL通信的物理层结构的示意图；
图3是本申请一个实施例提供的时频资源位置预留的示意图；
图4是本申请一个实施例提供的资源侦听和资源选择的示意图；
图5是本申请一个实施例提供的部分侦听的资源选择的示意图；
图6是本申请一个实施例提供的部分侦听的资源选择方法的流程图；
图7是本申请一个实施例提供的确定选择时隙和侦听时隙的示意图；
图8是本申请另一个实施例提供的确定选择时隙和侦听时隙的示意图；
图9是本申请另一个实施例提供的确定选择时隙和侦听时隙的示意图；
图10是本申请另一个实施例提供的部分侦听的资源选择方法的流程图；
图11是本申请一个实施例提供的部分侦听的资源选择装置的框图；
图12是本申请另一个实施例提供的部分侦听的资源选择装置的框图；
图13是本申请一个实施例提供的终端设备的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
本申请实施例描述的网络架构以及业务场景是为了更加清楚地说明本申请实施例的技术方案，并不构成对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技术问题，同样适用。
请参考图1，其示出了本申请一个实施例提供的网络架构的示意图。该网络架构可以包括：核心网11、接入网12和终端设备13。
核心网11中包括若干核心网设备。核心网设备的功能主要是提供用户连接、对用户的管理以及对业务完成承载，作为承载网络提供到外部网络的接口。例如，5G(5th Generation，第五代移动通信技术)NR系统的核心网中可以包括AMF(Access and Mobility Management Function，接入和移动性管理功能)实体、UPF(User Plane Function，用户平面功能)实体和SMF(Session Management Function，会话管理功能)实体等设备。
接入网12中包括若干接入网设备14。5G NR系统中的接入网可以称为NG-RAN(New Generation-Radio Access Network，新一代无线接入网)。接入网设备14是一种部署在接入网12中用以为终端设备13提供无线通信功能的装置。接入网设备14可以包括各种形式的宏基站，微基站，中继站，接入点等等。在采用不同的无线接入技术的系统中，具备接入网设备功能的设备的名称可能会有所不同，例如在5G NR系统中，称为gNodeB或者gNB。随着通信技术的演进，“接入网设备”这一名称可能会变化。为方便描述，本公开实施例中，上述为终端设备13提供无线通信功能的装置统称为接入网设备。
终端设备13的数量通常为多个，每一个接入网设备14所管理的小区内可以分布一个或多个终端设备13。终端设备13可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其他处理设备，以及各种形式的用户设备、移动台(Mobile Station，MS)等等。为方便描述，上面提到的设备统称为终端设备。接入网设备14与核心网设备之间通过某种空中技术相互通信，例如5G NR系统中的NG接口。接入网设备14与终端设备13之间通过某种空中技术互相通信，例如Uu接口。
终端设备13和终端设备13(例如车载设备与其它设备(如其它车载设备、手机、RSU(Road Side Unit，路测单元)等))之间可以通过直连通信接口(如PC5接口)互相通信，相应地，该基于直连通信接口建立的通信链路可以称为直连链路或SL。SL传输即为终端设备与终端设备之间通过侧行链路直接进行通信数据传输，不同于传统的蜂窝系统中通信数据通过接入网设备接收或者发送，SL传输具有时延短、开销小等特点，适合用于地理位置接近的两个终端设备(如车载设备和地理位置接近的其它周边设备)之间的通信。需要说明的是，在图1中，仅以V2X(vehicle to everything，车联网)场景下的车对车通信为示例，SL技术可以应用于各种终端设备之间直接进行通信的场景。或者说，本申请中的终端设备是指任意一种利用SL技术通信的设备。
本公开实施例中的“5G NR系统”也可以称为5G系统或者NR系统，但本领域技术人员可以理解其含义。本公开实施例描述的技术方案可以适用于5G NR系统，也可以适用于5G NR系统后续的演进系统。
关于SL传输，3GPP定义了两种传输模式：模式A和模式B。
模式A：终端设备的传输资源是由接入网设备(如基站)分配的，终端设备根据接入网设备分配的传输资源在侧行链路上进行通信数据的传输，其中，接入网设备既可以为终端设备分配单次传输的传输资源，也可以为终端设备分配半静态传输的传输资源。
模式B：终端设备自行在资源池中选取传输资源进行通信数据的传输。具体地，终端设备可以通过侦听的方式在资源池中选取传输资源，或者通过随机选取的方式在资源池中选取传输资源。
接下来主要介绍NR V2X系统中SL通信，终端设备自主进行资源选择的方法(也即上述模式B)。
NR V2X系统中SL通信的物理层结构如图2所示。PSCCH(Physical Sidelink Control Channel，物理侧行控制信道)用于承载第一侧行控制信息，PSSCH(Physical Sidelink Shared Channel，物理侧行共享信道)用于承载数据和第二侧行控制信息。PSCCH和PSSCH在同一时隙中发送。上述第一侧行控制信息和第二侧行控制信息可以是两个具有不同作用的侧行控制信息。例如，第一侧行控制信息承载在PSCCH中，主要包含资源侦听相关的域，方便其他终端设备解码后进行资源排除与资源选择。在PSSCH中，除了数 据外，还承载第二侧行控制信息，第二侧行控制信息主要包括数据解调相关的域，方便其他终端设备解调该PSSCH中的数据。
在NR V2X系统中，上述模式B下，终端设备自行选择传输资源来发送数据。资源预留则是资源选择的前提。
资源预留是指终端设备在PSCCH中发送第一侧行控制信息预留接下来要使用的资源。在NR V2X系统中，支持TB(Transport Block，传输块)内的资源预留也支持TB间的资源预留。
如图3所示，终端设备发送第一侧行控制信息，利用其中“Time resource assignment(时间资源分配)”和“Frequency resource assignment(频率资源分配)”域指示当前TB的N个时频资源(包括当前发送所用的资源)。其中N≤Nmax，在NR V2X中，Nmax等于2或3。同时，上述N个被指示的时频资源应分布在W个时隙内。在NR V2X中，W等于32。例如，图3所示的TB1中，终端设备在PSSCH发送初传数据的同时在PSCCH中发送第一侧行控制信息，利用上述两个域指示初传和重传1的时频资源位置(即此时N＝2)，即预留重传1的时频资源。并且，初传和重传1在时域上分布在32个时隙内。同理，在图3所示的TB1中，终端设备利用重传1的PSCCH中发送的第一侧行控制信息指示重传1和重传2的时频资源位置，重传1与重传2在时域上分布在32个时隙内。
同时，终端设备发送第一侧行控制信息时利用“Resource reservation period(资源预留周期)”域进行TB间的资源预留。例如图3中，终端设备在发送TB1的初传的第一侧行控制信息时，利用“Time resource assignment”和“Frequency resource assignment”域指示TB1初传和重传1的时频资源位置，记为{(t 1,f 1),(t 2,f 2)}。其中t 1、t 2代表TB1初传和重传1资源的时域位置，f 1、f 2代表相应的频域位置。如果该第一侧行控制信息中，“Resource reservation period”域的取值为100毫秒，则该SCI(Sidelink Control Information，侧行链路控制信息)同时指示了时频资源{(t1+100,f1),(t2+100,f2)}，这两个资源用于TB2初传和重传1的传输。同理，在TB1重传1中发送的第一侧行控制信息，也利用“Resource reservation period”域预留了TB2重传1和重传2的时频资源。在NR V2X中，“Resource reservation period”域可能的取值为0、1-99、100、200、300、400、500、600、700、800、900、1000毫秒，相比较LTE(Long Term Evaluation，长期演进)V2X更为灵活。但在每个资源池中，只配置了其中的e种取值，终端设备根据所用的资源池确定可能使用的值。记资源池配置中的e种取值为资源预留周期集合M，示例性地，e小于等于16。
此外，通过网络配置或预配置，上述TB间的预留可以以资源池为单位激活或去激活。当去激活TB间的预留时，第一侧行控制信息中不包括“Resource reservation period”域。一般情况下，在触发资源重选之前，终端设备所用的“Resource reservation period”域的取值，即资源预留周期都不会变，终端设备每发送一次第一侧行控制信息，都利用其中的“Resource reservation period”域预留下个周期的资源，用于另一个TB的传输，从而达到周期性地半持续传输。
当终端设备工作在上述模式B下，终端设备可以通过侦听其他终端设备发送的PSCCH，获取其他终端设备发送的第一侧行控制信息，从而得知其他终端设备所预留的资源。终端设备在进行资源选择时，会排除其他终端设备预留的资源，从而避免资源碰撞。
在NR V2X系统中，上述模式B下，终端设备需要自行选择资源。
如图4所示，终端设备在时隙n触发资源选择或重选或时隙n是高层触发物理层上报候选资源集合的时隙，资源选择窗从n+T1开始，到n+T2结束。0<＝T1<＝T proc,1，当子载波间隔是15，30，60，120kHz时，T proc,1为3，5，9，17个时隙。T2 min<＝T2<＝业务的剩余时延预算，T2 min的取值集合为{1,5,10,20}*2 μ个时隙，其中μ＝0,1,2,3对应于子载波间隔是15，30，60，120kHz的情况，终端设备根据自身待发送数据的优先级从该取值集合中确定T2 min。例如当子载波间隔是15kHz时，终端设备根据自身待发送数据的优先级从集合{1,5,10,20}中确定T2 min。当T2 min大于等于业务的剩余时延预算时，T2等于业务的剩余时延预算。剩余时延预算即数据的时延要求的对应时刻与当前时刻的差值。例如时隙n到达的数据包，时延要求为50毫秒，假设一个时隙为1毫秒，如果当前时刻为时隙n，则剩余时延预算为50毫秒，若当前时刻为时隙n+20，则剩余时延预算为30毫秒。
终端设备在n-T0到n-T proc,0进行资源侦听，T0的取值为100或1100毫秒。当子载波间隔是15，30，60，120kHz时，T proc,0为1，1，2，4个时隙。实际上，终端设备在每个时隙(除了自己的发送时隙)都会侦听其他终端设备发送的第一侧行控制信息，当时隙n触发资源选择或重选后，终端设备使用n-T0到n-T proc,0资源侦听的结果。
Step 1：终端设备将资源选择窗内所有属于终端设备所用资源池的可用资源作为资源集合A，集合A中的任意一个资源记为R(x,y)，x和y分别指示资源的频域位置和时域位置。记集合A中资源的初始数量为M total。终端设备根据资源侦听窗内的未侦听时隙(Step 1-1)和/或资源侦听窗内的资源侦听结果(Step 1-2)对资源集合A中的资源进行排除。终端设备判断资源R(x,y)或与资源R(x,y)对应的一系列周期性资源是否与Step 1-1中根据未侦听时隙确定的时隙或Step 1-2中根据侦听到的第一侧行控制信息确定的资源重叠，若重叠则从资源集合A中排除资源R(x,y)。
Step 1-1：如果终端设备在侦听窗内时隙m发送数据，没有进行侦听，则终端设备将根据时隙m和终端设备所用资源池中每一种允许的资源预留周期，以该资源预留周期为间隔，确定对应的Q个时隙。若该Q个时隙与资源R(x,y)或与资源R(x,y)对应的一系列周期性资源重叠，则从资源集合A中排除资源R(x,y)。上述Q＝1或者
Figure PCTCN2021085359-appb-000001
(代表向上取整)。Tscal等于T2转化为毫秒后的值。Prx为终端设备所用资源池允许的资源预留周期的一种。
例如图4中的子图(a)，终端设备在时隙m没有进行侦听，依次根据所用资源池配置中的资源预留周期集合M中每一种资源预留周期进行资源排除，对于其中某个资源预留周期1，假定Q值计算为2，则对应的Q个时隙为图4子图(a)中从时隙m映射的以资源预留周期1为间隔接下来的2个以横线阴影标识的时隙。对于其中某个资源预留周期2，假定Q值计算Q＝1，则对应的Q个时隙为图4子图(a)中从时隙m映射的以资源预留周期2为间隔的接下来的1个点状阴影标识的时隙。
终端设备将判断每一种预留周期对应的Q个时隙，是否与资源R(x,y)或与资源R(x,y)对应的一系列周期性资源重叠，若重叠则从资源集合A中排除资源R(x,y)。
可选地，当终端设备所用资源池去激活TB间的预留时，终端设备可以不执行上述Step 1-1。
Step 1-2：如果终端设备在资源侦听窗的时隙m内侦听到PSCCH中传输的第一侧行控制信息，测量该PSCCH的SL-RSRP(Sidelink Reference Signal Received Power，侧行参考信号接收功率)或者该PSCCH调度的PSSCH的SL-RSRP(即与该PSCCH在同一时隙中发送的PSSCH的SL-RSRP)。
如果测量的SL-RSRP大于SL-RSRP阈值，且终端设备所用资源池激活TB间的资源预留，则终端设备将根据时隙m和侦听到的第一侧行控制信息中携带的资源预留周期，以该资源预留周期为间隔，确定对应的Q个时隙。终端设备假定在该Q个时隙中也收到了相同内容的第一侧行控制信息。终端设备将判断在时隙m收到的第一侧行控制信息和这些假定收到的Q个第一侧行控制信息的“Time resource assignment”和“Frequency resource assignment”域指示的资源与资源R(x,y)或与资源R(x,y)对应的一系列周期性资源是否重叠，若重叠则从集合A中排除对应资源R(x,y)。上述Q＝1或者
Figure PCTCN2021085359-appb-000002
(代表向上取整)。Tscal等于T2转化为毫秒后的值。Prx为侦听到的第一侧行控制信息中携带的资源预留周期。
例如图4中的子图(b)，当终端设备所用资源池激活TB间的预留，如果终端设备在时隙m资源E(v,m)上侦听到PSCCH中的第一侧行控制信息，该第一侧行控制信息中的资源预留周期为Prx，假定Q值计算为1，终端设备将假定在时隙m+Prx上也收到了相同内容的第一侧行控制信息。终端设备将判断在时隙m收到的第一侧行控制信息和假定在时隙m+Prx收到的第一侧行控制信息的“Time resource assignment”和“Frequency resource assignment”域指示的资源1、2、3、4、5、6与资源R(x,y)或与资源R(x,y)对应的一系列周期性资源是否重叠，若重叠且满足RSRP条件则从资源集合A中排除资源R(x,y)。
如果终端设备测量的SL-RSRP大于SL-RSRP阈值，且终端设备所用资源池去激活TB间的资源预留，则终端设备只判断在时隙m收到的第一侧行控制信息的“Time resource assignment”与“Frequency resource assignment”域指示的资源是否与资源R(x,y)或与资源R(x,y)对应的一系列资源重叠，若重叠则从资源集合A中排除资源R(x,y)。
例如图4中的子图(b)，当终端设备所用资源池去激活TB间的预留，如果终端设备在时隙m资源E(v,m)上侦听到PSCCH中的第一侧行控制信息，则终端设备判断该第一侧行控制信息中“Time resource assignment”和“Frequency resource assignment”域指示的资源1、2、3与资源R(x,y)或与资源R(x,y)对应的一系列周期性资源是否重叠，若重叠且满足RSRP条件则从资源集合A中排除资源R(x,y)。
如果在上述资源排除后资源集合A中剩余资源不足M total*X％，则将SL-RSRP阈值抬升3dB，重新执行Step 1。物理层将资源排除后的资源集合A作为候选资源集合上报给高层。
Step 2：高层从上报的候选资源集合中随机选择资源发送数据。即终端设备从候选资源集合中随机选择资源发送数据。
需要注意的是：
1.上述RSRP阈值是由终端设备侦听到的PSCCH中携带的优先级P1和终端设备待发送数据的优先级P2决定的。终端设备所用资源池的配置中包含一张SL-RSRP阈值表，该SL-RSRP阈值表包含了所有优先级组合对应的SL-RSRP阈值。资源池的配置可以是网络配置或者预配置的。
例如，如表1所示，假设P1与P2的优先级等级可选值均为0-7，则不同优先级组合对应的SL-RSRP阈值用γ ij表示，其中，γ ij中的i为优先级等级P1的取值，j为优先级等级P2的取值。
表1 SL-RSRP阈值表
Figure PCTCN2021085359-appb-000003
Figure PCTCN2021085359-appb-000004
当终端设备侦听到其他终端设备发送的PSCCH，获取该PSCCH中传输的第一侧行控制信息中携带的优先级P1以及待发送数据的优先级P2，终端设备通过查表1的方式确定SL-RSRP阈值。
2.终端设备利用测量到的PSCCH-RSRP还是该PSCCH调度的PSSCH-RSRP与SL-RSRP阈值进行比较，取决于终端设备所用资源池的资源池配置。资源池的配置可以是网络配置或者预配置的。
3.上述X％，X可能的取值为{20,35,50}。终端设备所用资源池的配置中包含优先级与上述可能取值的对应关系，终端设备根据待发送数据的优先级及该对应关系，确定X的值。资源池配置可以是由网络配置或者预配置。
上述介绍为NR-V2X中的一种SL通信方式，即终端设备通过资源侦听自主选取传输资源，自行在侧行链路上进行数据传输。该SL通信的方式也可应用在手持终端与手持终端间的直接通信，行人与车辆间的直接通信等各种SL通信中。
上述介绍的终端设备通过资源侦听自主选取传输资源的方式并未考虑到节约功耗，部分侦听的资源选择方法就是针对例如手持终端这种功耗敏感的终端设计的节能省电的资源选择方式，其主要通过限制进行资源选择的时间单元数目与进行资源侦听的时间单元数目，以达到节能省电的目的。
接下来结合图5说明LTE-V2X中用于SL通信的部分侦听的资源选择方法。所谓部分侦听，是指终端设备根据在资源选择窗内确定的至少Y个子帧以及资源池配置中的侦听位图，确定在资源侦听窗内应侦听的子帧。在进行资源选择时，根据上述在资源侦听窗内确定的子帧中的侦听结果，对上述至少Y个子帧内的资源进行资源排除，从其中未排除的资源里选择资源发送数据。注意，上述至少Y个子帧的确定取决于终端设备实现，且Y应大于等于终端设备所用资源池的配置参数minNumCandidateSF。此外，上述侦听位图的长度为10比特。其中，配置参数minNumCandidateSF表示候选子帧的最小数目。
例如图5中，假定终端设备在资源选择窗内确定了t 1到t Y共Y个子帧，其所用资源池配置中的侦听位图为(1001001000) 2。因为上述位图中的第1、4、7位为1，所以该终端设备应侦听资源侦听窗内t 1-Pstep到t Y-Pstep、t 1-4*Pstep到t Y-4*Pstep和t 1-7*Pstep到t Y-7*Pstep子帧内其他终端设备发送的SCI。在多数情况下，例如当终端设备所用频段为V2X专有频段或终端设备复用FDD(Frequency Division Duplexing，频分双工)蜂窝通信系统所用频段，上述Pstep为100毫秒。如果该终端设备复用TDD(Time Division Duplexing，时分双工)蜂窝系统所用的频段，Pstep应根据上下行子帧的配比进行调整。终端设备在n时刻触发资源选择或重选时，将根据上述资源侦听窗内确定的子帧内的侦听结果，排除上述Y个子帧中的资源，并最终从该Y个子帧中的剩余资源中选择资源发送数据。
注意，上述机制适合应用于可以预测触发资源选择或重选的时刻n的情况下，例如，终端设备预测下次资源重选可能发生在时刻n，从而确定对应的Y个子帧，根据该Y个子帧确定相应的侦听子帧。当时间进行到侦听子帧时则进行侦听，当时间进行到时刻n时触发资源选择或资源重选从而根据侦听结果从Y个子帧中选择资源。
目前标准化正在讨论用于NR SL传输的部分侦听的资源选择机制，以上述介绍的LTE V2X中用于SL传输的部分侦听资源选择机制为起点。在LTE V2X中，T2的最大值为100毫秒，对于确定的至少Y个子帧中的任意一个子帧y1，根据该子帧确定的侦听子帧在时域上最大为y1-Pstep。而Pstep也对应为100毫秒，因此不会出现确定的侦听子帧出现在时刻n之后的情况。
但在NR SL中，T2的最大值为业务的剩余时延预算，对于确定的至少Y个时隙中的任意一个时隙y1，当根据时隙y1确定对应的侦听时隙时，也需要设计相应的机制保证确定的侦听时隙不会出现在时隙n之后。否则，假设确定的侦听时隙y-P1在时隙n之后，就会出现在时隙n触发了资源选择，此时却仍然存在还未侦听的时隙，从而影响选择资源的可靠性。这种问题在业务的剩余时延预算较大时更为明显。
本申请在部分侦听的资源选择过程中，通过对选择时隙和侦听时隙的位置进行确定，以使得选择时隙位于目标时刻之后，侦听时隙位于目标时刻之前，这样就能够保证在从选择时隙的可用资源中确定用于数据传输的候选资源集合时，不会存在还未侦听的时隙，从而保证资源选择的准确性和可靠性。
下面，将通过几个示例性实施例对本申请技术方案进行介绍说明。
请参考图6，其示出了本申请一个实施例提供的部分侦听的资源选择方法的流程图。该方法可应用于图1所示的网络架构中，例如该方法可以由终端设备执行。该方法可以包括如下几个步骤(610～620)：
步骤610，确定至少一个选择时隙和至少一个侦听时隙；其中，选择时隙位于目标时刻之后，且侦听时隙位于目标时刻之前。
可选地，终端设备从资源选择窗中确定至少一个选择时隙。在一个示例中，假设目标时刻记为n，资源选择窗的起始时刻可以表示为n+T1，资源选择窗的结束时刻可以表示为n+T2；其中，T1和T2可以采用上文介绍的方式确定。在另一个示例中，假设终端设备触发资源选择或终端设备触发资源重选或高层触发物理层上报候选资源集合的时刻记为n，则资源选择窗的起始时刻可以表示为n+T1，资源选择窗的结束时刻可以表示为n+T2；其中，T1和T2可以采用上文介绍的方式确定。
可选地，终端设备预测将在目标时刻n触发资源选择或触发资源重选或高层触发物理层上报候选资源集合，则终端设备确定资源选择窗n+T1到n+T2，从该资源选择窗n+T1到n+T2中确定至少一个选择时隙。
可选地，上述确定的选择时隙的数量大于等于数量阈值。在一个示例中，上述确定的选择时隙的数量大于或等于Y，Y大于或等于数量阈值。其中，该数量阈值由网络设备配置，或预配置，或通信协议中预定义，或终端设备自行确定。
可选地，上述确定的选择时隙为连续的时隙，或，非连续的时隙。例如，在确定的选择时隙的数量为多个(即大于等于2)的情况下，该多个选择时隙可以是连续的时隙(即任意一组相邻的选择时隙之间并无间隔时隙)，或者该多个选择时隙也可以是非连续的时隙(即存在至少一组相邻的选择时隙之间具有间隔时隙)。上述一组相邻的选择时隙，是指将上述多个选择时隙在时域上按照时间先后顺序进行排列，第i个选择时隙与第i+1个选择时隙即为一组相邻的选择时隙，i为正整数。
可选地，终端设备根据确定的至少一个选择时隙和资源配置池中的资源预留周期集合，确定至少一个侦听时隙，并保证确定的每一个侦听时隙均在目标时刻之前。
可选地，目标时刻为以下任一时刻：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报候选资源集合的时刻、触发确定候选资源集合的时刻、确定候选资源集合的时刻、物理层向高层上报候选资源集合的时刻。
在示例性实施例中，终端设备可以确定至少一个选择时间单元和至少一个侦听时间单元；其中，选择时间单元位于目标时刻之后，且侦听时间单元位于目标时刻之前。可选地，终端设备确定的至少一个选择时间单元中的每一个选择时间单元，均位于目标时刻之后；和/或，终端设备确定的至少一个侦听时间单元中的每一个侦听时间单元，均位于目标时刻之前。上述时间单元可以是任意一种时域计量单位，包括但不限于以下任意一种：帧、子帧、时隙、子时隙。
另外，本申请中提及的目标时刻，可以是一个时间点，也可以是该目标时刻对应的时间点所属的一个时间单元。例如，该时间单元可以是时隙，那么目标时刻可以是指该目标时刻对应的时间点所属的时隙，例如该时隙可以称为目标时隙。
需要说明的是，本申请中提及的A时间单元/时刻位于B时间单元/时刻之前，是指A时间单元/时刻小于或等于B时间单元/时刻；相应地，A时间单元/时刻位于B时间单元/时刻之后，是指A时间单元/时刻大于或等于B时间单元/时刻。例如，上文所述的选择时隙位于目标时刻之后，是指该选择时隙大于或等于目标时刻；上文所述的侦听时隙位于目标时刻之前，是指该侦听时隙小于或等于目标时刻。在本申请中，其他地方关于两个时间单元/时刻前后顺序的说明，均遵循此处的解释，在其他地方将不再重复赘述。
步骤620，基于侦听时隙中的侦听结果，从选择时隙的可用资源中确定候选资源集合，从候选资源集合中选择传输资源。
可选地，终端设备基于上述确定的至少一个侦听时隙中的侦听结果，对上述确定的至少一个选择时隙中的可用资源进行排除，构造候选资源集合，从该候选资源集合中选择传输资源发送数据。
综上所述，本申请实施例提供的技术方案，在部分侦听的资源选择过程中，通过对选择时隙和侦听时隙的位置进行确定，以使得选择时隙位于目标时刻之后，侦听时隙位于目标时刻之前，这样就能够保证在从选择时隙的可用资源中确定用于数据传输的候选资源集合时，不会存在还未侦听的时隙，从而保证资源选择的准确性和可靠性。
在一示例性实施例中，终端设备通过如下方式确定至少一个选择时隙和至少一个侦听时隙：从资源选择窗中确定至少一个选择时隙；对于任一选择时隙，将该选择时隙对应的目标候选时隙，确定为侦听时隙；其中，目标候选时隙位于第一时刻之前，且与选择时隙之间的间隔时长是资源预留周期的整数倍，该第一时刻是基于目标时刻确定的。
可选地，目标候选时隙与选择时隙之间的间隔时长是资源预留周期的i倍，且i是使得目标候选时隙位于第一时刻之前的最小正整数。
可选地，对于任意一个确定的选择时隙ty，根据ty确定的侦听时隙为ty-Px，其中Px为资源池配置中的资源预留周期集合的所有取值。对于某一个Px，如果ty-Px大于或等于第一时刻，则侦听时隙为ty-i*Px，i为满足ty-i*Px小于或等于第一时刻的最小正整数；如果ty-Px小于或等于第一时刻，则侦听时隙为ty-Px。
可选地，第一时刻为目标时刻，或者，第一时刻为目标时刻减去第一偏移量。可选地，第一偏移量是 基于子载波间隔从多个候选偏移量中确定的一个偏移量。例如，第一偏移量为T proc,0或T proc,1，该T proc,0和T proc,1可参见上文内容中的介绍说明。另外，第一时刻同样可以是一个时间点，或者是该第一时刻对应的时间点所属的一个时间单元。例如，在目标时刻为目标时隙n的情况下，假设第一时刻记为第一时隙A，该第一时隙A可以是目标时隙n，也可以是目标时隙n减去第一偏移量。
示例性地，如图7所示，终端设备确定的选择时隙为t1、t2和t3，资源池配置中的资源预留周期集合的取值为P1和P2，则根据t1和t2确定的侦听时隙为t1-P1、t1-P2、t2-P1和t2-P2。由于t3-P1大于目标时隙n，则根据t3确定的侦听时隙为t3-2*P1和t3-P2。
在本实施例中，通过对侦听时隙的位置进行控制，使得确定的侦听时隙位于目标时刻之前，从而保证在对选择时隙中的可用资源进行排除构造用于数据传输的候选资源集合时，不会存在还未侦听的时隙，进而保证资源选择的准确性和可靠性。
在另一示例性实施例中，终端设备通过如下方式确定至少一个选择时隙和至少一个侦听时隙：基于目标时刻确定选择时隙的最大门限值；基于最大门限值从资源选择窗中确定至少一个选择时隙，该选择时隙位于最大门限值之前；基于选择时隙和资源预留周期，确定侦听时隙。
在一个示例中，终端设备将目标时刻与第二偏移量相加，得到选择时隙的最大门限值。
在另一个示例中，终端设备将第一时刻与第二偏移量相加，得到选择时隙的最大门限值，该第一时刻是基于目标时刻确定的。可选地，第一时刻为目标时刻减去第一偏移量。
可选地，第二偏移量是基于资源池配置中资源预留周期集合中的最小值确定的(例如，第二偏移量可以是资源池配置中资源预留周期集合中的最小值，也可以是该最小值的整数倍)；或者，第二偏移量是基于终端设备所用资源池中的资源预留周期的最小值确定的(例如，第二偏移量可以是终端设备所用资源池中的资源预留周期的最小值，也可以是该最小值的整数倍)；或者，第二偏移量是网络设备配置的，或者，第二偏移量是预配置的。
可选地，第一偏移量是基于子载波间隔从多个候选偏移量中确定的一个偏移量。例如，第一偏移量为T proc,0或T proc,1，该T proc,0和T proc,1可参见上文内容中的介绍说明。
可选地，终端设备在按照上述方式确定出选择时隙，确保该确定的选择时隙位于最大门限值之前的情况下，终端设备将该确定的选择时隙减去资源预留周期的整数倍，得到侦听时隙。例如，终端设备可以将该确定的选择时隙减去资源预留周期得到侦听时隙，也可以将该确定的选择时隙减去k倍的资源预留周期得到侦听时隙，k为大于1的整数。示例性地，在第二偏移量是资源池配置中资源预留周期集合中的最小值，或是终端设备所用资源池中的资源预留周期的最小值的情况下，终端设备可以将该确定的选择时隙减去资源预留周期得到侦听时隙。或者，在第二偏移量是资源池配置中资源预留周期集合中的最小值的k倍，或是终端设备所用资源池中的资源预留周期的最小值的k倍，或是网络设备配置或预配置的情况下，终端设备可以将该确定的选择时隙减去k倍的资源预留周期得到侦听时隙。
可选地，终端设备在资源选择窗内确定的至少一个选择时隙应小于或等于最大门限值。例如，目标时刻为目标时隙n，那么终端设备在资源选择窗内确定的至少一个选择时隙应小于或等于时隙n+W，该W即为上文介绍的第二偏移量，其可以根据资源池配置中资源预留周期集合中的最小值确定，或者W也可以由终端设备所用资源池中的资源预留周期的最小值确定，或者由网络设备配置或预配置。终端设备对于某一个确定的选择时隙ty，根据ty确定的侦听时隙为ty-Px，其中Px为资源池配置中的资源预留周期集合的所有取值。或者，终端设备对于某一个确定的选择时隙ty，根据ty确定的侦听时隙为ty-k*Px，其中Px为资源池配置中的资源预留周期集合的所有取值，k为正整数或使得ty-k*Px在目标时刻之前的最小正整数。
示例性地，如图8所示，终端设备确定的选择时隙为t1、t2和t3，资源池配置中的资源预留周期集合的取值为P1和P2，资源预留周期集合中的最小值为P1。终端设备确定的选择时隙为t1、t2和t3均小于时隙n+W，W＝P1。这保证了终端设备确定的侦听时隙t1-P1、t2-P1、t3-P1、t1-P2、t2-P2和t3-P2均在目标时隙n之前。
在本实施例中，通过对选择时隙的最大门限值进行控制，使得确定的选择时隙位于该最大门限值之前，进而使得基于选择时隙和资源预留周期确定出的侦听时隙位于目标时刻之前，从而保证在对选择时隙中的可用资源进行排除构造用于数据传输的候选资源集合时，不会存在还未侦听的时隙，进而保证资源选择的准确性和可靠性。
在另一示例性实施例中，终端设备通过如下方式确定至少一个选择时隙和至少一个侦听时隙：从资源选择窗中确定至少一个选择时隙；基于至少一个选择时隙和资源预留周期，确定至少一个侦听时隙；其中，目标时刻位于最后一个侦听时隙之后和/或第一个选择时隙之前。
可选地，对于任意一个确定的选择时隙ty，根据ty确定的侦听时隙为ty-Px，其中Px为资源池配置中 的资源预留周期集合的所有取值。目标时刻大于或等于终端设备确定的最后一个(即时域上最大)侦听时隙和/或小于或等于终端设备确定的第一个(即时域上最小)选择时隙。
可选地，对于任意一个确定的选择时隙ty，根据ty确定的侦听时隙为ty-k*Px，其中Px为资源池配置中的资源预留周期集合的所有取值，k为正整数。目标时刻大于或等于终端设备确定的最后一个(即时域上最大)侦听时隙和/或小于或等于终端设备确定的第一个(即时域上最小)选择时隙。
可选地，目标时刻为第一个选择时隙减去第三偏移量。可选地，第三偏移量是基于子载波间隔从多个候选偏移量中确定的一个偏移量。例如，第三偏移量为T proc,0或T proc,1，该T proc,0和T proc,1可参见上文内容中的介绍说明。
可选地，在第二时刻和第三时刻之间，终端设备继续在确定的所述侦听时隙内侦听；其中，第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报候选资源集合的时刻；第三时刻为以下任意一种：触发确定候选资源集合的时刻、确定候选资源集合的时刻、物理层向高层上报候选资源集合的时刻。
示例性地，如图9所示，终端设备确定的选择时隙为t1、t2和t3，终端设备确定的侦听时隙为t1-P1、t2-P1、t3-P1、t1-P2、t2-P2和t3-P2。在目标时隙n，终端设备触发资源选择或资源重选或高层触发物理层上报候选资源集合，此时时隙t3-P1还未侦听。终端设备在时隙m上报候选资源集合。时隙m大于或等于确定的最后一个侦听时隙t3-P1，且小于或等于确定的第一个选择时隙t1。示例性地，时隙m为时隙t1-T proc,0或时隙t1-T proc,1。终端设备在大于或等于时隙n与小于或等于时隙m的侦听时隙t3-P1上继续侦听。
可选地，引入定时器(timer)，终端设备在第二时刻启动定时器，该第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报候选资源集合的时刻；当定时器到达设定时刻(如0)时，执行以下任一项操作：触发确定候选资源集合、确定候选资源集合、物理层向高层上报候选资源集合。定时器的设置，保证了物理层进行候选资源集合上报或终端设备确定候选资源集合或终端设备触发确定候选资源集合的时刻，大于或等于终端设备确定的最后一个侦听时隙和/或小于或等于终端设备确定的第一个选择时隙。
在本实施例中，通过对目标时刻(如物理层进行候选资源集合上报或终端设备确定候选资源集合或终端设备触发确定候选资源集合的时刻)进行控制，使得该目标时刻位于最后一个侦听时隙之后和/或第一个选择时隙之前，从而保证在对选择时隙中的可用资源进行排除构造用于数据传输的候选资源集合时，不会存在还未侦听的时隙，进而保证资源选择的准确性和可靠性。
在一示例性实施例中，上述步骤620可以包括如下几个子步骤：
1、对于选择时隙中的任一可用资源，若在目标侦听时隙内侦听到PSCCH中传输的第一侧行控制信息，测量该PSCCH或该PSCCH调度的PSSCH的信道质量；
第一侧行控制信息承载在PSCCH中，主要包含资源侦听相关的域，方便其他终端设备解码后进行资源排除与资源选择。信道质量可以是SL的RSRP，也可以是SL的RSRQ(Reference Signal Receiving Quality，参考信号接收质量)、SINR(Signal to Interference plus Noise Ratio，信号与干扰加噪声比)等，本申请对此不作限定。
可选地，终端设备利用测量到的PSCCH的信道质量还是该PSCCH调度的PSSCH的信道质量与信道质量阈值进行比较，取决于终端设备所用资源池的资源池配置。资源池的配置可以是网络配置或者预配置的。
2、若测量得到的信道质量大于信道质量阈值，且终端设备所用资源池激活TB间的资源预留，则根据目标侦听时隙和第一侧行控制信息中携带的资源预留周期，确定Q个时隙，Q为正整数；
可选地，终端设备以第一侧行控制信息中携带的资源预留周期为间隔，确定位于目标侦听时隙之后的Q个时隙。例如，该Q个时隙中的第1个时隙为目标侦听时隙+资源预留周期，该Q个时隙中的第2个时隙为目标侦听时隙+2*资源预留周期，以此类推。
3、如果在目标侦听时隙中收到的第一侧行控制信息和Q个时隙中假定收到的Q个第一侧行控制信息中的时频资源指示域所指示的时频资源，与该可用资源或该可用资源对应的周期性资源存在重叠，则从选择时隙中排除该可用资源；
终端设备将确定的至少一个选择时隙中的可用资源作为资源集合A，资源集合A中任意一个可用资源记为R(x,y)。x和y分别指示资源的频域位置和时域位置。记资源集合A中资源的初始数量为M total。
若测量得到的信道质量大于信道质量阈值，且终端设备所用资源池激活TB间的资源预留，那么终端设备确定Q个时隙，终端设备假定在上述Q个时隙中也收到了相同内容的第一侧行控制信息，终端设备将判断在目标侦听时隙中收到的第一侧行控制信息和Q个时隙中假定收到的Q个第一侧行控制信息中的时频资源指示域(包括“Time resource assignment”和“Frequency resource assignment”域)所指示的时频资源，与可用资源R(x,y)或该可用资源R(x,y)对应的周期性资源是否存在重叠，若存在重叠，则从选择时隙中排 除该可用资源R(x,y)。可选地，若不存在重叠，则保留该可用资源R(x,y)。
4、基于选择时隙中可用资源的排除结果，得到候选资源集合，从候选资源集合中选择传输资源。
可选地，物理层基于选择时隙中可用资源的排除结果，得到候选资源集合，物理层将该候选资源集合上报给高层。高层从候选资源集合中随机选择传输资源发送数据。
在一个示例中，Q＝1。
在另一个示例中，
Figure PCTCN2021085359-appb-000005
其中，
Figure PCTCN2021085359-appb-000006
代表向上取整，Prx为第一侧行控制信息中携带的资源预留周期，Tscal为以下任意一项：
(1)资源选择窗的结束时刻与目标时刻之间的差值转化为毫秒后的值；
(2)业务的剩余时延预算；
(3)业务的剩余时延预算转化为毫秒后的值；
(4)最后一个选择时隙与第二时刻之间的差值转化为毫秒后的值，第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报候选资源集合的时刻；例如图7或图8中的t3-n再转化为毫秒；
(5)最后一个选择时隙与第三时刻之间的差值转化为毫秒后的值，第三时刻为以下任意一种：触发确定候选资源集合的时刻、确定候选资源集合的时刻、物理层向高层上报候选资源集合的时刻；例如图9中的t3-m再转化为毫秒；
(6)最后一个选择时隙与第一个选择时隙的差值转化为毫秒后的值；
(7)最后一个选择时隙与最后一个侦听时隙的差值转化为毫秒后的值；
(8)资源选择窗的结束时刻与最后一个侦听时隙的差值转化为毫秒后的值；
(9)确定的选择时隙的数目。
在另一个示例中，Q＝i，i是目标侦听时隙与选择时隙之间的间隔时长与资源预留周期之间的倍数。这种情况对应于上文实施例介绍的将目标候选时隙确定为侦听时隙的方案。对于采用这种方案确定的侦听时隙，如果利用资源预留周期P确定该侦听时隙，假设在该侦听时隙中侦听到的第一侧行控制信息中的资源预留周期等于P，则Q直接等于确定该侦听时隙时用的i。
可选地，在满足第一条件的情况下，
Figure PCTCN2021085359-appb-000007
其中，第一条件包括以下至少一项：
(1)基于目标侦听时隙确定的第四时刻位于终端设备确定的最后一个侦听时隙之后，第四时刻等于目标侦听时隙与Prx之和，或，第四时刻等于目标侦听时隙与Prxlg之和，Prxlg为Prx转化为逻辑时隙后的数目；
(2)Prx小于Tscal。
对于上述(1)中Prx转化为逻辑时隙后的数目Prxlg，示例性地，可以如下：假设一个时隙等于1毫秒，Prx为5毫秒，在这5个时隙中，有2个时隙可能是TDD模式下的下行时隙或者是发送同步信号的时隙，这些时隙并不包含在SL的资源池中，因此需要将Prx代表的5毫秒转化为逻辑时隙3个时隙，即Prxlg。
可选地，步骤620还可以包括如下子步骤：若测量得到的信道质量大于信道质量阈值，且终端设备所用资源池去激活TB间的资源预留，则如果在目标侦听时隙中收到的第一侧行控制信息中的时频资源指示域所指示的时频资源，与该可用资源或该可用资源对应的周期性资源存在重叠，则从选择时隙中排除该可用资源。
若测量得到的信道质量大于信道质量阈值，且终端设备所用资源池去激活TB间的资源预留，那么终端设备只判断在目标侦听时隙收到的第一侧行控制信息中的时频资源指示域(包括“Time resource assignment”和“Frequency resource assignment”域)所指示的时频资源，与可用资源R(x,y)或该可用资源R(x,y)对应的周期性资源是否存在重叠，若存在重叠，则从选择时隙中排除该可用资源R(x,y)。可选地，若不存在重叠，则保留该可用资源R(x,y)。
可选地，若选择时隙中经资源排除后的剩余资源的数量小于门限值，则将信道质量阈值抬升一设定数值，并重新将测量得到的信道质量和信道质量阈值进行比对，重新对确定的至少一个选择时隙中的全部可用资源进行排除，直至剩余资源的数量大于或等于门限值时，将剩余资源确定为候选资源集合。可选地，门限值是基于选择时隙中包含的可用资源的总数量确定的。例如，选择时隙中包含的可用资源的总数量为M total，门限值为M total*X％。可选地，X可能的取值为{20,35,50}。终端设备所用资源池的配置中包含优先级与上述可能取值的对应关系，终端设备根据待发送数据的优先级及该对应关系，确定X的值。资源池配置可以是由网络配置或者预配置。
请参考图10，其示出了本申请另一个实施例提供的部分侦听的资源选择方法的流程图。该方法可应用于图1所示的网络架构中，例如该方法可以由终端设备执行。该方法可以包括如下几个步骤(1010～1050)：
步骤1010，确定至少一个选择时隙和至少一个侦听时隙。
可选地，选择时隙位于目标时刻之后，且侦听时隙位于目标时刻之前。
可选地，上述确定的选择时隙的数量大于等于数量阈值。在一个示例中，上述确定的选择时隙的数量大于或等于Y，Y大于或等于数量阈值。其中，该数量阈值由网络设备配置，或预配置，或通信协议中预定义，或终端设备自行确定。
可选地，在确定的选择时隙的数量为多个的情况下，该多个选择时隙为连续的时隙，或，非连续的时隙。
步骤1020，对于选择时隙中的任一可用资源，若在目标侦听时隙内侦听到PSCCH中传输的第一侧行控制信息，测量该PSCCH或PSCCH调度的PSSCH的信道质量。
步骤1030，若测量得到的信道质量大于信道质量阈值，且终端设备所用资源池激活TB间的资源预留，则根据目标侦听时隙和第一侧行控制信息中携带的资源预留周期，确定Q个时隙，Q为正整数。
在一个示例中，Q＝1。
在另一个示例中，
Figure PCTCN2021085359-appb-000008
其中，
Figure PCTCN2021085359-appb-000009
代表向上取整，Prx为第一侧行控制信息中携带的资源预留周期，Tscal为以下任意一项：
(1)资源选择窗的结束时刻与目标时刻之间的差值转化为毫秒后的值；
(2)业务的剩余时延预算；
(3)业务的剩余时延预算转化为毫秒后的值；
(4)最后一个选择时隙与第二时刻之间的差值转化为毫秒后的值，第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报候选资源集合的时刻；
(5)最后一个选择时隙与第三时刻之间的差值转化为毫秒后的值，第三时刻为以下任意一种：触发确定候选资源集合的时刻、确定候选资源集合的时刻、物理层向高层上报候选资源集合的时刻；
(6)最后一个选择时隙与第一个选择时隙的差值转化为毫秒后的值；
(7)最后一个选择时隙与最后一个侦听时隙的差值转化为毫秒后的值；
(8)资源选择窗的结束时刻与最后一个侦听时隙的差值转化为毫秒后的值；
(9)确定的选择时隙的数目。
在另一个示例中，Q＝i，i是目标侦听时隙与选择时隙之间的间隔时长与资源预留周期之间的倍数。
可选地，在满足第一条件的情况下，
Figure PCTCN2021085359-appb-000010
其中，第一条件包括以下至少一项：
(1)基于目标侦听时隙确定的第四时刻位于终端设备确定的最后一个侦听时隙之后，第四时刻等于目标侦听时隙与Prx之和，或，第四时刻等于目标侦听时隙与Prxlg之和，Prxlg为Prx转化为逻辑时隙后的数目；
(2)Prx小于Tscal。
步骤1040，如果在目标侦听时隙中收到的第一侧行控制信息和Q个时隙中假定收到的Q个第一侧行控制信息中的时频资源指示域所指示的时频资源，与该可用资源或该可用资源对应的周期性资源存在重叠，则从选择时隙中排除该可用资源。
步骤1050，基于选择时隙中可用资源的排除结果，得到候选资源集合，从候选资源集合中选择传输资源。
可选地，本实施例方法还包括如下步骤：若测量得到的信道质量大于信道质量阈值，且终端设备所用资源池去激活TB间的资源预留，则如果在目标侦听时隙中收到的第一侧行控制信息中的时频资源指示域所指示的时频资源，与该可用资源或该可用资源对应的周期性资源存在重叠，则从选择时隙中排除该可用资源。
可选地，若选择时隙中经资源排除后的剩余资源的数量小于门限值，则将信道质量阈值抬升一设定数值，并重新将测量得到的信道质量和信道质量阈值进行比对，重新对确定的至少一个选择时隙中的全部可用资源进行排除，直至剩余资源的数量大于或等于门限值时，将剩余资源确定为候选资源集合。
对于本实施例中未详细说明的细节，可参见上文实施例中的介绍说明，此处不再赘述。
下述为本申请装置实施例，可以用于执行本申请方法实施例。对于本申请装置实施例中未披露的细节，请参照本申请方法实施例。
请参考图11，其示出了本申请一个实施例提供的部分侦听的资源选择装置的框图。该装置具有实现上述方法示例的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该装置可以是上文介绍的终端设备，也可以设置于在终端设备中。如图11所示，该装置1100可以包括：时隙确定模块1110和资源选择模块1120。
时隙确定模块1110，用于确定至少一个选择时隙和至少一个侦听时隙；其中，所述选择时隙位于目标时刻之后，且所述侦听时隙位于所述目标时刻之前。
资源选择模块1120，用于基于所述侦听时隙中的侦听结果，从所述选择时隙的可用资源中确定候选资源集合，从所述候选资源集合中选择传输资源。
在示例性实施例中，所述目标时刻为以下任一时刻：触发资源选择的时刻；触发资源重选的时刻；高层触发物理层上报所述候选资源集合的时刻；触发确定所述候选资源集合的时刻；确定所述候选资源集合的时刻；物理层向高层上报所述候选资源集合的时刻。
在示例性实施例中，所述时隙确定模块1110，用于：从资源选择窗中确定所述至少一个选择时隙；对于任一所述选择时隙，将所述选择时隙对应的目标候选时隙，确定为所述侦听时隙；其中，所述目标候选时隙位于第一时刻之前，且与所述选择时隙之间的间隔时长是资源预留周期的整数倍，所述第一时刻是基于所述目标时刻确定的。
可选地，所述目标候选时隙与所述选择时隙之间的间隔时长是所述资源预留周期的i倍，且所述i是使得所述目标候选时隙位于所述第一时刻之前的最小正整数。
可选地，所述第一时刻为所述目标时刻，或者，所述第一时刻为所述目标时刻减去第一偏移量。
可选地，所述第一偏移量是基于子载波间隔从多个候选偏移量中确定的一个偏移量。
在示例性实施例中，所述时隙确定模块1110，用于：基于所述目标时刻确定所述选择时隙的最大门限值；基于所述最大门限值从资源选择窗中确定所述至少一个选择时隙，所述选择时隙位于所述最大门限值之前；基于所述选择时隙和资源预留周期，确定所述侦听时隙。
可选地，所述时隙确定模块1110，用于：将所述目标时刻与第二偏移量相加，得到所述选择时隙的最大门限值。
可选地，所述第二偏移量是基于资源池配置中资源预留周期集合中的最小值确定的；或者，所述第二偏移量是基于终端设备所用资源池中的资源预留周期的最小值确定的；或者，所述第二偏移量是网络设备配置的，或者，所述第二偏移量是预配置的。
可选地，所述时隙确定模块1110，用于将所述选择时隙减去所述资源预留周期的整数倍，得到所述侦听时隙。
在示例性实施例中，所述时隙确定模块1110，用于：从资源选择窗中确定所述至少一个选择时隙；基于所述至少一个选择时隙和资源预留周期，确定所述至少一个侦听时隙；其中，所述目标时刻位于最后一个侦听时隙之后和/或第一个选择时隙之前。
可选地，所述目标时刻为所述第一个选择时隙减去第三偏移量。
可选地，所述第三偏移量是基于子载波间隔从多个候选偏移量中确定的一个偏移量。
可选地，如图12所示，所述装置1100还包括：信息侦听模块1130。
信息侦听模块1130，用于在第二时刻和第三时刻之间，继续在确定的所述侦听时隙内侦听。其中，所述第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报所述候选资源集合的时刻；所述第三时刻为以下任意一种：触发确定所述候选资源集合的时刻、确定所述候选资源集合的时刻、物理层向高层上报所述候选资源集合的时刻。
可选地，如图12所示，所述装置1110还包括：定时器启动模块1140和操作执行模块1150。
定时器启动模块1140，用于在第二时刻启动定时器，所述第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报所述候选资源集合的时刻。
操作执行模块1150，用于当所述定时器到达设定时刻时，执行以下任一项操作：触发确定所述候选资源集合、确定所述候选资源集合、物理层向高层上报所述候选资源集合。
在示例性实施例中，所述选择时隙的数量大于等于数量阈值；其中，所述数量阈值由网络设备配置，或预配置，或通信协议中预定义，或终端设备自行确定。
在示例性实施例中，所述选择时隙为连续的时隙，或，非连续的时隙。
在示例性实施例中，所述资源选择模块1120，用于：
对于所述选择时隙中的任一可用资源，若在目标侦听时隙内侦听到物理侧行控制信道PSCCH中传输的第一侧行控制信息，测量所述PSCCH或所述PSCCH调度的物理侧行共享信道PSSCH的信道质量；
若测量得到的所述信道质量大于信道质量阈值，且终端设备所用资源池激活传输块TB间的资源预留，则根据所述目标侦听时隙和所述第一侧行控制信息中携带的资源预留周期，确定Q个时隙，所述Q为正整数；
如果在所述目标侦听时隙中收到的第一侧行控制信息和所述Q个时隙中假定收到的Q个第一侧行控制信息中的时频资源指示域所指示的时频资源，与所述可用资源或所述可用资源对应的周期性资源存在重叠，则从所述选择时隙中排除所述可用资源；
基于所述选择时隙中可用资源的排除结果，得到所述候选资源集合，从所述候选资源集合中选择传输资源。
可选地，所述Q＝1；
或者，所述
Figure PCTCN2021085359-appb-000011
其中，
Figure PCTCN2021085359-appb-000012
代表向上取整，Prx为所述第一侧行控制信息中携带的资源预留周期，Tscal为以下任意一项：资源选择窗的结束时刻与所述目标时刻之间的差值转化为毫秒后的值；业务 的剩余时延预算；业务的剩余时延预算转化为毫秒后的值；最后一个选择时隙与第二时刻之间的差值转化为毫秒后的值，所述第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报所述候选资源集合的时刻；最后一个选择时隙与第三时刻之间的差值转化为毫秒后的值，所述第三时刻为以下任意一种：触发确定所述候选资源集合的时刻、确定所述候选资源集合的时刻、物理层向高层上报所述候选资源集合的时刻；最后一个选择时隙与第一个选择时隙的差值转化为毫秒后的值；最后一个选择时隙与最后一个侦听时隙的差值转化为毫秒后的值；资源选择窗的结束时刻与最后一个侦听时隙的差值转化为毫秒后的值；确定的所述选择时隙的数目；
或者，所述Q＝i，所述i是所述目标侦听时隙与所述选择时隙之间的间隔时长与所述资源预留周期之间的倍数。
可选地，在满足第一条件的情况下，所述
Figure PCTCN2021085359-appb-000013
其中，所述第一条件包括以下至少一项：
基于所述目标侦听时隙确定的第四时刻位于所述终端设备确定的最后一个侦听时隙之后，所述第四时刻等于所述目标侦听时隙与Prx之和，或，所述第四时刻等于所述目标侦听时隙与Prxlg之和，Prxlg为Prx转化为逻辑时隙后的数目；
Prx小于Tscal。
可选地，所述资源选择模块1120，还用于：若测量得到的所述信道质量大于所述信道质量阈值，且所述终端设备所用资源池去激活TB间的资源预留，则如果在所述目标侦听时隙中收到的第一侧行控制信息中的时频资源指示域所指示的时频资源，与所述可用资源或所述可用资源对应的周期性资源存在重叠，则从所述选择时隙中排除所述可用资源。
可选地，所述资源选择模块1120，还用于：若所述选择时隙中经资源排除后的剩余资源的数量小于门限值，则将所述信道质量阈值抬升一设定数值，并重新将测量得到的所述信道质量和所述信道质量阈值进行比对，重新对确定的所述至少一个选择时隙中的全部可用资源进行排除，直至所述剩余资源的数量大于或等于所述门限值时，将所述剩余资源确定为所述候选资源集合；其中，所述门限值是基于所述选择时隙中包含的可用资源的总数量确定的。
需要说明的一点是，上述实施例提供的装置在实现其功能时，仅以上述各个功能模块的划分进行举例说明，实际应用中，可以根据实际需要而将上述功能分配由不同的功能模块完成，即将设备的内容结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
请参考图13，其示出了本申请一个实施例提供的终端设备130的结构示意图，例如，该终端设备可以用于执行上述部分侦听的资源选择方法。具体来讲：该终端设备130可以包括：处理器131、接收器132、发射器133、存储器134和总线135。
处理器131包括一个或者一个以上处理核心，处理器131通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
接收器132和发射器133可以实现为一个收发器136，该收发器136可以是一块通信芯片。
存储器134通过总线135与处理器131相连。
存储器134可用于存储计算机程序，处理器131用于执行该计算机程序，以实现上述方法实施例中的终端设备执行的各个步骤。
此外，存储器134可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，易失性或非易失性存储设备包括但不限于：RAM(Random-Access Memory，随机存储器)和ROM(Read-Only Memory，只读存储器)、EPROM(Erasable Programmable Read-Only Memory，可擦写可编程只读存储器)、EEPROM(Electrically Erasable Programmable Read-Only Memory，电可擦写可编程只读存储器)、闪存或其他固态存储其技术，CD-ROM(Compact Disc Read-Only Memory，只读光盘)、DVD(Digital Video Disc，高密度数字视频光盘)或其他光学存储、磁带盒、磁带、磁盘存储或其他磁性存储设备。其中：
所述处理器131，用于确定至少一个选择时隙和至少一个侦听时隙；其中，所述选择时隙位于目标时刻之后，且所述侦听时隙位于所述目标时刻之前；
所述处理器131，还用于基于所述侦听时隙中的侦听结果，从所述选择时隙的可用资源中确定候选资源集合，从所述候选资源集合中选择传输资源。
在示例性实施例中，所述目标时刻为以下任一时刻：触发资源选择的时刻；触发资源重选的时刻；高层触发物理层上报所述候选资源集合的时刻；触发确定所述候选资源集合的时刻；确定所述候选资源集合的时刻；物理层向高层上报所述候选资源集合的时刻。
在示例性实施例中，所述处理器131用于：从资源选择窗中确定所述至少一个选择时隙；对于任一所述选择时隙，将所述选择时隙对应的目标候选时隙，确定为所述侦听时隙；其中，所述目标候选时隙位于第一时刻之前，且与所述选择时隙之间的间隔时长是资源预留周期的整数倍，所述第一时刻是基于所述目 标时刻确定的。
可选地，所述目标候选时隙与所述选择时隙之间的间隔时长是所述资源预留周期的i倍，且所述i是使得所述目标候选时隙位于所述第一时刻之前的最小正整数。
可选地，所述第一时刻为所述目标时刻，或者，所述第一时刻为所述目标时刻减去第一偏移量。
可选地，所述第一偏移量是基于子载波间隔从多个候选偏移量中确定的一个偏移量。
在示例性实施例中，所述处理器131用于：基于所述目标时刻确定所述选择时隙的最大门限值；基于所述最大门限值从资源选择窗中确定所述至少一个选择时隙，所述选择时隙位于所述最大门限值之前；基于所述选择时隙和资源预留周期，确定所述侦听时隙。
可选地，所述处理器131用于：将所述目标时刻与第二偏移量相加，得到所述选择时隙的最大门限值。
可选地，所述第二偏移量是基于资源池配置中资源预留周期集合中的最小值确定的；或者，所述第二偏移量是基于终端设备所用资源池中的资源预留周期的最小值确定的；或者，所述第二偏移量是网络设备配置的，或者，所述第二偏移量是预配置的。
可选地，所述处理器131用于将所述选择时隙减去所述资源预留周期的整数倍，得到所述侦听时隙。
在示例性实施例中，所述处理器131用于：从资源选择窗中确定所述至少一个选择时隙；基于所述至少一个选择时隙和资源预留周期，确定所述至少一个侦听时隙；其中，所述目标时刻位于最后一个侦听时隙之后和/或第一个选择时隙之前。
可选地，所述目标时刻为所述第一个选择时隙减去第三偏移量。
可选地，所述第三偏移量是基于子载波间隔从多个候选偏移量中确定的一个偏移量。
可选地，所述处理器131还用于在第二时刻和第三时刻之间，继续在确定的所述侦听时隙内侦听。其中，所述第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报所述候选资源集合的时刻；所述第三时刻为以下任意一种：触发确定所述候选资源集合的时刻、确定所述候选资源集合的时刻、物理层向高层上报所述候选资源集合的时刻。
可选地，所述处理器131还用于在第二时刻启动定时器，所述第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报所述候选资源集合的时刻。
所述处理器131还用于当所述定时器到达设定时刻时，执行以下任一项操作：触发确定所述候选资源集合、确定所述候选资源集合、物理层向高层上报所述候选资源集合。
在示例性实施例中，所述选择时隙的数量大于等于数量阈值；其中，所述数量阈值由网络设备配置，或预配置，或通信协议中预定义，或终端设备自行确定。
在示例性实施例中，所述选择时隙为连续的时隙，或，非连续的时隙。
在示例性实施例中，所述处理器131用于：
对于所述选择时隙中的任一可用资源，若在目标侦听时隙内侦听到物理侧行控制信道PSCCH中传输的第一侧行控制信息，测量所述PSCCH或所述PSCCH调度的物理侧行共享信道PSSCH的信道质量；
若测量得到的所述信道质量大于信道质量阈值，且终端设备所用资源池激活传输块TB间的资源预留，则根据所述目标侦听时隙和所述第一侧行控制信息中携带的资源预留周期，确定Q个时隙，所述Q为正整数；
如果在所述目标侦听时隙中收到的第一侧行控制信息和所述Q个时隙中假定收到的Q个第一侧行控制信息中的时频资源指示域所指示的时频资源，与所述可用资源或所述可用资源对应的周期性资源存在重叠，则从所述选择时隙中排除所述可用资源；
基于所述选择时隙中可用资源的排除结果，得到所述候选资源集合，从所述候选资源集合中选择传输资源。
可选地，所述Q＝1；
或者，所述
Figure PCTCN2021085359-appb-000014
其中，
Figure PCTCN2021085359-appb-000015
代表向上取整，Prx为所述第一侧行控制信息中携带的资源预留周期，Tscal为以下任意一项：资源选择窗的结束时刻与所述目标时刻之间的差值转化为毫秒后的值；业务的剩余时延预算；业务的剩余时延预算转化为毫秒后的值；最后一个选择时隙与第二时刻之间的差值转化为毫秒后的值，所述第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报所述候选资源集合的时刻；最后一个选择时隙与第三时刻之间的差值转化为毫秒后的值，所述第三时刻为以下任意一种：触发确定所述候选资源集合的时刻、确定所述候选资源集合的时刻、物理层向高层上报所述候选资源集合的时刻；最后一个选择时隙与第一个选择时隙的差值转化为毫秒后的值；最后一个选择时隙与最后一个侦听时隙的差值转化为毫秒后的值；资源选择窗的结束时刻与最后一个侦听时隙的差值转化为毫秒后的值；确定的所述选择时隙的数目；
或者，所述Q＝i，所述i是所述目标侦听时隙与所述选择时隙之间的间隔时长与所述资源预留周期之间的倍数。
可选地，在满足第一条件的情况下，所述
Figure PCTCN2021085359-appb-000016
其中，所述第一条件包括以下至少一项：
基于所述目标侦听时隙确定的第四时刻位于所述终端设备确定的最后一个侦听时隙之后，所述第四时刻等于所述目标侦听时隙与Prx之和，或，所述第四时刻等于所述目标侦听时隙与Prxlg之和，Prxlg为Prx转化为逻辑时隙后的数目；
Prx小于Tscal。
可选地，所述处理器131还用于：若测量得到的所述信道质量大于所述信道质量阈值，且所述终端设备所用资源池去激活TB间的资源预留，则如果在所述目标侦听时隙中收到的第一侧行控制信息中的时频资源指示域所指示的时频资源，与所述可用资源或所述可用资源对应的周期性资源存在重叠，则从所述选择时隙中排除所述可用资源。
可选地，所述处理器131还用于：若所述选择时隙中经资源排除后的剩余资源的数量小于门限值，则将所述信道质量阈值抬升一设定数值，并重新将测量得到的所述信道质量和所述信道质量阈值进行比对，重新对确定的所述至少一个选择时隙中的全部可用资源进行排除，直至所述剩余资源的数量大于或等于所述门限值时，将所述剩余资源确定为所述候选资源集合；其中，所述门限值是基于所述选择时隙中包含的可用资源的总数量确定的。
本申请实施例还提供了一种计算机可读存储介质，所述存储介质中存储有计算机程序，所述计算机程序用于被终端设备的处理器执行，以实现上述部分侦听的资源选择方法。
可选地，该计算机可读存储介质可以包括：ROM(Read-Only Memory，只读存储器)、RAM(Random-Access Memory，随机存储器)、SSD(Solid State Drives，固态硬盘)或光盘等。其中，随机存取记忆体可以包括ReRAM(Resistance Random Access Memory，电阻式随机存取记忆体)和DRAM(Dynamic Random Access Memory，动态随机存取存储器)。
本申请实施例还提供了一种芯片，所述芯片包括可编程逻辑电路和/或程序指令，当所述芯片在终端设备上运行时，用于实现上述部分侦听的资源选择方法。
本申请实施例还提供了一种计算机程序产品或计算机程序，所述计算机程序产品或计算机程序包括计算机指令，所述计算机指令存储在计算机可读存储介质中，终端设备的处理器从所述计算机可读存储介质读取并执行所述计算机指令，以实现上述部分侦听的资源选择方法。
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。
在本文中提及的“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这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
另外，本文中描述的步骤编号，仅示例性示出了步骤间的一种可能的执行先后顺序，在一些其它实施例中，上述步骤也可以不按照编号顺序来执行，如两个不同编号的步骤同时执行，或者两个不同编号的步骤按照与图示相反的顺序执行，本申请实施例对此不作限定。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请实施例所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述仅为本申请的示例性实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (48)

  1. 一种部分侦听的资源选择方法，其特征在于，所述方法由终端设备执行，所述方法包括：
    确定至少一个选择时隙和至少一个侦听时隙；其中，所述选择时隙位于目标时刻之后，且所述侦听时隙位于所述目标时刻之前；
    基于所述侦听时隙中的侦听结果，从所述选择时隙的可用资源中确定候选资源集合，从所述候选资源集合中选择传输资源。
  2. 根据权利要求1所述的方法，其特征在于，所述目标时刻为以下任一时刻：
    触发资源选择的时刻；
    触发资源重选的时刻；
    高层触发物理层上报所述候选资源集合的时刻；
    触发确定所述候选资源集合的时刻；
    确定所述候选资源集合的时刻；
    物理层向高层上报所述候选资源集合的时刻。
  3. 根据权利要求1或2所述的方法，其特征在于，所述确定至少一个选择时隙和至少一个侦听时隙，包括：
    从资源选择窗中确定所述至少一个选择时隙；
    对于任一所述选择时隙，将所述选择时隙对应的目标候选时隙，确定为所述侦听时隙；其中，所述目标候选时隙位于第一时刻之前，且与所述选择时隙之间的间隔时长是资源预留周期的整数倍，所述第一时刻是基于所述目标时刻确定的。
  4. 根据权利要求3所述的方法，其特征在于，所述目标候选时隙与所述选择时隙之间的间隔时长是所述资源预留周期的i倍，且所述i是使得所述目标候选时隙位于所述第一时刻之前的最小正整数。
  5. 根据权利要求3或4所述的方法，其特征在于，所述第一时刻为所述目标时刻，或者，所述第一时刻为所述目标时刻减去第一偏移量。
  6. 根据权利要求5所述的方法，其特征在于，所述第一偏移量是基于子载波间隔从多个候选偏移量中确定的一个偏移量。
  7. 根据权利要求1或2所述的方法，其特征在于，所述确定至少一个选择时隙和至少一个侦听时隙，包括：
    基于所述目标时刻确定所述选择时隙的最大门限值；
    基于所述最大门限值从资源选择窗中确定所述至少一个选择时隙，所述选择时隙位于所述最大门限值之前；
    基于所述选择时隙和资源预留周期，确定所述侦听时隙。
  8. 根据权利要求7所述的方法，其特征在于，所述基于所述目标时刻确定所述选择时隙的最大门限值，包括：
    将所述目标时刻与第二偏移量相加，得到所述选择时隙的最大门限值。
  9. 根据权利要求8所述的方法，其特征在于，
    所述第二偏移量是基于资源池配置中资源预留周期集合中的最小值确定的；
    或者，
    所述第二偏移量是基于所述终端设备所用资源池中的资源预留周期的最小值确定的；
    或者，
    所述第二偏移量是网络设备配置的，或者，所述第二偏移量是预配置的。
  10. 根据权利要求7至9任一项所述的方法，其特征在于，所述基于所述选择时隙和资源预留周期，确定所述侦听时隙，包括：
    将所述选择时隙减去所述资源预留周期的整数倍，得到所述侦听时隙。
  11. 根据权利要求1或2所述的方法，其特征在于，所述确定至少一个选择时隙和至少一个侦听时隙，包括：
    从资源选择窗中确定所述至少一个选择时隙；
    基于所述至少一个选择时隙和资源预留周期，确定所述至少一个侦听时隙；
    其中，所述目标时刻位于最后一个侦听时隙之后和/或第一个选择时隙之前。
  12. 根据权利要求11所述的方法，其特征在于，所述目标时刻为所述第一个选择时隙减去第三偏移量。
  13. 根据权利要求12所述的方法，其特征在于，所述第三偏移量是基于子载波间隔从多个候选偏移量 中确定的一个偏移量。
  14. 根据权利要求11至13任一项所述的方法，其特征在于，所述方法还包括：
    在第二时刻和第三时刻之间，继续在确定的所述侦听时隙内侦听；
    其中，所述第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报所述候选资源集合的时刻；所述第三时刻为以下任意一种：触发确定所述候选资源集合的时刻、确定所述候选资源集合的时刻、物理层向高层上报所述候选资源集合的时刻。
  15. 根据权利要求11至14任一项所述的方法，其特征在于，所述方法还包括：
    在第二时刻启动定时器，所述第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报所述候选资源集合的时刻；
    当所述定时器到达设定时刻时，执行以下任一项操作：触发确定所述候选资源集合、确定所述候选资源集合、物理层向高层上报所述候选资源集合。
  16. 根据权利要求1至15任一项所述的方法，其特征在于，所述选择时隙的数量大于等于数量阈值；其中，所述数量阈值由网络设备配置，或预配置，或通信协议中预定义，或所述终端设备自行确定。
  17. 根据权利要求1至16任一项所述的方法，其特征在于，所述选择时隙为连续的时隙，或，非连续的时隙。
  18. 根据权利要求1至17任一项所述的方法，其特征在于，所述基于所述侦听时隙中的侦听结果，从所述选择时隙的可用资源中确定候选资源集合，从所述候选资源集合中选择传输资源，包括：
    对于所述选择时隙中的任一可用资源，若在目标侦听时隙内侦听到物理侧行控制信道PSCCH中传输的第一侧行控制信息，测量所述PSCCH或所述PSCCH调度的物理侧行共享信道PSSCH的信道质量；
    若测量得到的所述信道质量大于信道质量阈值，且所述终端设备所用资源池激活传输块TB间的资源预留，则根据所述目标侦听时隙和所述第一侧行控制信息中携带的资源预留周期，确定Q个时隙，所述Q为正整数；
    如果在所述目标侦听时隙中收到的第一侧行控制信息和所述Q个时隙中假定收到的Q个第一侧行控制信息中的时频资源指示域所指示的时频资源，与所述可用资源或所述可用资源对应的周期性资源存在重叠，则从所述选择时隙中排除所述可用资源；
    基于所述选择时隙中可用资源的排除结果，得到所述候选资源集合，从所述候选资源集合中选择传输资源。
  19. 根据权利要求18所述的方法，其特征在于，
    所述Q＝1；
    或者，
    所述
    Figure PCTCN2021085359-appb-100001
    其中，
    Figure PCTCN2021085359-appb-100002
    代表向上取整，Prx为所述第一侧行控制信息中携带的资源预留周期，Tscal为以下任意一项：资源选择窗的结束时刻与所述目标时刻之间的差值转化为毫秒后的值；业务的剩余时延预算；业务的剩余时延预算转化为毫秒后的值；最后一个选择时隙与第二时刻之间的差值转化为毫秒后的值，所述第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报所述候选资源集合的时刻；最后一个选择时隙与第三时刻之间的差值转化为毫秒后的值，所述第三时刻为以下任意一种：触发确定所述候选资源集合的时刻、确定所述候选资源集合的时刻、物理层向高层上报所述候选资源集合的时刻；最后一个选择时隙与第一个选择时隙的差值转化为毫秒后的值；最后一个选择时隙与最后一个侦听时隙的差值转化为毫秒后的值；资源选择窗的结束时刻与最后一个侦听时隙的差值转化为毫秒后的值；确定的所述选择时隙的数目；
    或者，
    所述Q＝i，所述i是所述目标侦听时隙与所述选择时隙之间的间隔时长与所述资源预留周期之间的倍数。
  20. 根据权利要求19所述的方法，其特征在于，在满足第一条件的情况下，所述
    Figure PCTCN2021085359-appb-100003
    其中，所述第一条件包括以下至少一项：
    基于所述目标侦听时隙确定的第四时刻位于所述终端设备确定的最后一个侦听时隙之后，所述第四时刻等于所述目标侦听时隙与Prx之和，或，所述第四时刻等于所述目标侦听时隙与Prxlg之和，Prxlg为Prx转化为逻辑时隙后的数目；
    Prx小于Tscal。
  21. 根据权利要求18至20任一项所述的方法，其特征在于，所述方法还包括：
    若测量得到的所述信道质量大于所述信道质量阈值，且所述终端设备所用资源池去激活TB间的资源预留，则如果在所述目标侦听时隙中收到的第一侧行控制信息中的时频资源指示域所指示的时频资源，与所述可用资源或所述可用资源对应的周期性资源存在重叠，则从所述选择时隙中排除所述可用资源。
  22. 根据权利要求18至21任一项所述的方法，其特征在于，所述基于所述选择时隙中可用资源的排除结果，得到所述候选资源集合，包括：
    若所述选择时隙中经资源排除后的剩余资源的数量小于门限值，则将所述信道质量阈值抬升一设定数值，并重新将测量得到的所述信道质量和所述信道质量阈值进行比对，重新对确定的所述至少一个选择时隙中的全部可用资源进行排除，直至所述剩余资源的数量大于或等于所述门限值时，将所述剩余资源确定为所述候选资源集合；
    其中，所述门限值是基于所述选择时隙中包含的可用资源的总数量确定的。
  23. 一种部分侦听的资源选择装置，其特征在于，所述装置包括：
    时隙确定模块，用于确定至少一个选择时隙和至少一个侦听时隙；其中，所述选择时隙位于目标时刻之后，且所述侦听时隙位于所述目标时刻之前；
    资源选择模块，用于基于所述侦听时隙中的侦听结果，从所述选择时隙的可用资源中确定候选资源集合，从所述候选资源集合中选择传输资源。
  24. 根据权利要求23所述的装置，其特征在于，所述目标时刻为以下任一时刻：
    触发资源选择的时刻；
    触发资源重选的时刻；
    高层触发物理层上报所述候选资源集合的时刻；
    触发确定所述候选资源集合的时刻；
    确定所述候选资源集合的时刻；
    物理层向高层上报所述候选资源集合的时刻。
  25. 根据权利要求23或24所述的装置，其特征在于，所述时隙确定模块，用于：
    从资源选择窗中确定所述至少一个选择时隙；
    对于任一所述选择时隙，将所述选择时隙对应的目标候选时隙，确定为所述侦听时隙；其中，所述目标候选时隙位于第一时刻之前，且与所述选择时隙之间的间隔时长是资源预留周期的整数倍，所述第一时刻是基于所述目标时刻确定的。
  26. 根据权利要求25所述的装置，其特征在于，所述目标候选时隙与所述选择时隙之间的间隔时长是所述资源预留周期的i倍，且所述i是使得所述目标候选时隙位于所述第一时刻之前的最小正整数。
  27. 根据权利要求25或26所述的装置，其特征在于，所述第一时刻为所述目标时刻，或者，所述第一时刻为所述目标时刻减去第一偏移量。
  28. 根据权利要求27所述的装置，其特征在于，所述第一偏移量是基于子载波间隔从多个候选偏移量中确定的一个偏移量。
  29. 根据权利要求23或24所述的装置，其特征在于，所述时隙确定模块，用于：
    基于所述目标时刻确定所述选择时隙的最大门限值；
    基于所述最大门限值从资源选择窗中确定所述至少一个选择时隙，所述选择时隙位于所述最大门限值之前；
    基于所述选择时隙和资源预留周期，确定所述侦听时隙。
  30. 根据权利要求29所述的装置，其特征在于，所述时隙确定模块，用于：
    将所述目标时刻与第二偏移量相加，得到所述选择时隙的最大门限值。
  31. 根据权利要求30所述的装置，其特征在于，
    所述第二偏移量是基于资源池配置中资源预留周期集合中的最小值确定的；
    或者，
    所述第二偏移量是基于终端设备所用资源池中的资源预留周期的最小值确定的；
    或者，
    所述第二偏移量是网络设备配置的，或者，所述第二偏移量是预配置的。
  32. 根据权利要求29至31任一项所述的装置，其特征在于，所述时隙确定模块，用于：
    将所述选择时隙减去所述资源预留周期的整数倍，得到所述侦听时隙。
  33. 根据权利要求23或24所述的装置，其特征在于，所述时隙确定模块，用于：
    从资源选择窗中确定所述至少一个选择时隙；
    基于所述至少一个选择时隙和资源预留周期，确定所述至少一个侦听时隙；
    其中，所述目标时刻位于最后一个侦听时隙之后和/或第一个选择时隙之前。
  34. 根据权利要求33所述的装置，其特征在于，所述目标时刻为所述第一个选择时隙减去第三偏移量。
  35. 根据权利要求34所述的装置，其特征在于，所述第三偏移量是基于子载波间隔从多个候选偏移量 中确定的一个偏移量。
  36. 根据权利要求33至35任一项所述的装置，其特征在于，所述装置还包括：
    信息侦听模块，用于在第二时刻和第三时刻之间，继续在确定的所述侦听时隙内侦听；
    其中，所述第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报所述候选资源集合的时刻；所述第三时刻为以下任意一种：触发确定所述候选资源集合的时刻、确定所述候选资源集合的时刻、物理层向高层上报所述候选资源集合的时刻。
  37. 根据权利要求33至36任一项所述的装置，其特征在于，所述装置还包括：
    定时器启动模块，用于在第二时刻启动定时器，所述第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报所述候选资源集合的时刻；
    操作执行模块，用于当所述定时器到达设定时刻时，执行以下任一项操作：触发确定所述候选资源集合、确定所述候选资源集合、物理层向高层上报所述候选资源集合。
  38. 根据权利要求23至37任一项所述的装置，其特征在于，所述选择时隙的数量大于等于数量阈值；其中，所述数量阈值由网络设备配置，或预配置，或通信协议中预定义，或终端设备自行确定。
  39. 根据权利要求23至38任一项所述的装置，其特征在于，所述选择时隙为连续的时隙，或，非连续的时隙。
  40. 根据权利要求23至39任一项所述的装置，其特征在于，所述资源选择模块，用于：
    对于所述选择时隙中的任一可用资源，若在目标侦听时隙内侦听到物理侧行控制信道PSCCH中传输的第一侧行控制信息，测量所述PSCCH或所述PSCCH调度的物理侧行共享信道PSSCH的信道质量；
    若测量得到的所述信道质量大于信道质量阈值，且终端设备所用资源池激活传输块TB间的资源预留，则根据所述目标侦听时隙和所述第一侧行控制信息中携带的资源预留周期，确定Q个时隙，所述Q为正整数；
    如果在所述目标侦听时隙中收到的第一侧行控制信息和所述Q个时隙中假定收到的Q个第一侧行控制信息中的时频资源指示域所指示的时频资源，与所述可用资源或所述可用资源对应的周期性资源存在重叠，则从所述选择时隙中排除所述可用资源；
    基于所述选择时隙中可用资源的排除结果，得到所述候选资源集合，从所述候选资源集合中选择传输资源。
  41. 根据权利要求40所述的装置，其特征在于，
    所述Q＝1；
    或者，
    所述
    Figure PCTCN2021085359-appb-100004
    其中，
    Figure PCTCN2021085359-appb-100005
    代表向上取整，Prx为所述第一侧行控制信息中携带的资源预留周期，Tscal为以下任意一项：资源选择窗的结束时刻与所述目标时刻之间的差值转化为毫秒后的值；业务的剩余时延预算；业务的剩余时延预算转化为毫秒后的值；最后一个选择时隙与第二时刻之间的差值转化为毫秒后的值，所述第二时刻为以下任意一种：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报所述候选资源集合的时刻；最后一个选择时隙与第三时刻之间的差值转化为毫秒后的值，所述第三时刻为以下任意一种：触发确定所述候选资源集合的时刻、确定所述候选资源集合的时刻、物理层向高层上报所述候选资源集合的时刻；最后一个选择时隙与第一个选择时隙的差值转化为毫秒后的值；最后一个选择时隙与最后一个侦听时隙的差值转化为毫秒后的值；资源选择窗的结束时刻与最后一个侦听时隙的差值转化为毫秒后的值；确定的所述选择时隙的数目；
    或者，
    所述Q＝i，所述i是所述目标侦听时隙与所述选择时隙之间的间隔时长与所述资源预留周期之间的倍数。
  42. 根据权利要求41所述的装置，其特征在于，在满足第一条件的情况下，所述
    Figure PCTCN2021085359-appb-100006
    其中，所述第一条件包括以下至少一项：
    基于所述目标侦听时隙确定的第四时刻位于所述终端设备确定的最后一个侦听时隙之后，所述第四时刻等于所述目标侦听时隙与Prx之和，或，所述第四时刻等于所述目标侦听时隙与Prxlg之和，Prxlg为Prx转化为逻辑时隙后的数目；
    Prx小于Tscal。
  43. 根据权利要求40至42任一项所述的装置，其特征在于，所述资源选择模块，还用于：
    若测量得到的所述信道质量大于所述信道质量阈值，且所述终端设备所用资源池去激活TB间的资源预留，则如果在所述目标侦听时隙中收到的第一侧行控制信息中的时频资源指示域所指示的时频资源，与所述可用资源或所述可用资源对应的周期性资源存在重叠，则从所述选择时隙中排除所述可用资源。
  44. 根据权利要求40至43任一项所述的装置，其特征在于，所述资源选择模块，还用于：
    若所述选择时隙中经资源排除后的剩余资源的数量小于门限值，则将所述信道质量阈值抬升一设定数值，并重新将测量得到的所述信道质量和所述信道质量阈值进行比对，重新对确定的所述至少一个选择时隙中的全部可用资源进行排除，直至所述剩余资源的数量大于或等于所述门限值时，将所述剩余资源确定为所述候选资源集合；
    其中，所述门限值是基于所述选择时隙中包含的可用资源的总数量确定的。
  45. 一种终端设备，其特征在于，所述终端设备包括处理器；
    所述处理器，用于确定至少一个选择时隙和至少一个侦听时隙；其中，所述选择时隙位于目标时刻之后，且所述侦听时隙位于所述目标时刻之前；
    所述处理器，还用于基于所述侦听时隙中的侦听结果，从所述选择时隙的可用资源中确定候选资源集合，从所述候选资源集合中选择传输资源。
  46. 一种计算机可读存储介质，其特征在于，所述存储介质中存储有计算机程序，所述计算机程序用于被处理器执行，以实现如权利要求1至22任一项所述的部分侦听的资源选择方法。
  47. 一种芯片，其特征在于，所述芯片包括可编程逻辑电路和/或程序指令，当所述芯片运行时，用于实现如权利要求1至22任一项所述的部分侦听的资源选择方法。
  48. 一种计算机程序产品或计算机程序，其特征在于，所述计算机程序产品或计算机程序包括计算机指令，所述计算机指令存储在计算机可读存储介质中，处理器从所述计算机可读存储介质读取并执行所述计算机指令，以实现如权利要求1至22任一项所述的部分侦听的资源选择方法。
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