WO2024016130A1 - 资源选择方法、排除方法、装置、设备及存储介质 - Google Patents

资源选择方法、排除方法、装置、设备及存储介质 Download PDF

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Publication number
WO2024016130A1
WO2024016130A1 PCT/CN2022/106325 CN2022106325W WO2024016130A1 WO 2024016130 A1 WO2024016130 A1 WO 2024016130A1 CN 2022106325 W CN2022106325 W CN 2022106325W WO 2024016130 A1 WO2024016130 A1 WO 2024016130A1
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Prior art keywords
resource
resources
control information
time
resource set
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PCT/CN2022/106325
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English (en)
French (fr)
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丁伊
赵振山
林晖闵
王昊
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Oppo广东移动通信有限公司
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Priority to PCT/CN2022/106325 priority Critical patent/WO2024016130A1/zh
Publication of WO2024016130A1 publication Critical patent/WO2024016130A1/zh

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

Definitions

  • the embodiments of the present application relate to the field of communication technology, and in particular, to a resource selection method, elimination method, apparatus, equipment and storage medium.
  • SL idelink, sidelink
  • the terminal device can select transmission resources in the resource pool through listening.
  • SL Sidelink, sidelink
  • Embodiments of the present application provide a resource selection method, elimination method, device, equipment and storage medium.
  • the technical solutions are as follows:
  • a resource selection method is provided, the method is executed by a terminal device, and the method includes:
  • transmission resources are selected from the first resource set.
  • Any resource in the first resource set is the first resource, and the first resource corresponds to N in the time domain. Continuous time units, N is an integer greater than 1.
  • a resource exclusion method is provided.
  • the method is executed by a terminal device.
  • the method includes:
  • the RSRP Reference Signal Receiving Power
  • a resource selection device includes:
  • a selection module configured to select a transmission resource in the first resource set after excluding resources from the first resource set, where any resource in the first resource set is a first resource, and the first resource is The domain corresponds to N consecutive time units, and N is an integer greater than 1.
  • a resource exclusion device includes:
  • an exclusion module configured to, after excluding resources from the second resource set, if the number of second resources that meet the first condition in the second resource set is less than the first threshold, raise the reference signal received power RSRP threshold and initialize the After the second resource set is set, resource exclusion is performed again on the second resource set; wherein the first condition includes that there are second unexcluded resources for at least N consecutive time units starting from the time unit where the second resource is located. Resources, N is an integer greater than 1.
  • a terminal device includes a processor and a memory.
  • a computer program is stored in the memory.
  • the processor executes the computer program to implement the above resource selection method. or resource exclusion method.
  • a computer-readable storage medium is provided, and a computer program is stored in the storage medium, and the computer program is used to be executed by a processor to implement the above resource selection method or resource exclusion method. .
  • a chip includes programmable logic circuits and/or program instructions, and is used to implement the above resource selection method or resource exclusion method when the chip is running.
  • a computer program product includes computer instructions.
  • the computer instructions are stored in a computer-readable storage medium.
  • a processor reads the computer-readable storage medium from the computer-readable storage medium.
  • the candidate resource set obtained after resource exclusion includes resources that are continuous in the time domain, thereby ensuring that the terminal device can select resources that are continuous in the time domain when selecting transmission resources from the candidate resource set, supporting B2B (Back to Back, Back-to-back) transmission, which will help improve the utilization of COT (Channel Occupancy Time) and help SL-U users compete for the channel.
  • B2B Back to Back, Back-to-back
  • Figure 1 is a schematic diagram of a network architecture provided by an embodiment of the present application.
  • Figure 2 is a schematic diagram of the physical layer structure of SL communication provided by an embodiment of the present application.
  • Figure 3 is a schematic diagram of time-frequency resource location reservation provided by an embodiment of the present application.
  • Figure 4 is a schematic diagram of resource listening and resource selection provided by an embodiment of the present application.
  • Figure 5 is a schematic diagram of a comb resource block provided by an embodiment of the present application.
  • Figure 6 is a schematic diagram of resource block set division provided by an embodiment of the present application.
  • Figure 7 is a flow chart of a resource selection method provided by an embodiment of the present application.
  • Figure 8 is a schematic diagram of resource selection provided by an exemplary embodiment corresponding to the embodiment of Figure 7;
  • Figure 9 is a flow chart of a resource exclusion method provided by another embodiment of the present application.
  • Figure 10 is a schematic diagram of resource exclusion provided by an exemplary embodiment corresponding to the embodiment of Figure 9;
  • Figure 11 is a block diagram of a resource selection device provided by an embodiment of the present application.
  • Figure 12 is a block diagram of a resource exclusion device provided by an embodiment of the present application.
  • Figure 13 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the network architecture may include: core network 11, access network 12 and terminal equipment 13.
  • the core network 11 includes several core network devices.
  • the main functions of the core network equipment are to provide user connections, manage users, and carry services.
  • As a bearer network it provides an interface to the external network.
  • the core network of the 5G (5th Generation, fifth generation mobile communication technology) NR (New Radio) system can include AMF (Access and Mobility Management Function) entities, UPF (User Devices such as Plane Function (user plane function) entity and SMF (Session Management Function) entity.
  • AMF Access and Mobility Management Function
  • UPF User Devices such as Plane Function (user plane function) entity
  • SMF Session Management Function
  • the access network 12 includes a number of access network devices 14.
  • the access network in the 5G NR system can be called NG-RAN (New Generation-Radio Access Network).
  • the access network device 14 is a device deployed in the access network 12 to provide wireless communication functions for the terminal device 13 .
  • the access network equipment 14 may include various forms of macro base stations, micro base stations, relay stations, access points, etc.
  • the names of devices with access network device functions may be different. For example, in 5G NR systems, they are called gNodeB or gNB. As communication technology evolves, the name "access network equipment" may change.
  • access network devices For convenience of description, in the embodiment of the present disclosure, the above-mentioned devices that provide wireless communication functions for the terminal device 13 are collectively referred to as access network devices.
  • the number of terminal devices 13 is usually multiple, and one or more terminal devices 13 may be distributed in the 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 wireless modems, as well as various forms of user equipment, mobile stations (Mobile Station, MS) etc.
  • 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 the Uu interface.
  • Terminal equipment 13 and terminal equipment 13 can communicate with each other through a direct communication interface (such as PC5 interface) ,
  • a direct communication interface such as PC5 interface
  • the communication link established based on the direct communication interface may be called a direct link or SL.
  • SL transmission is the direct transmission of communication data between terminal devices through side links. Unlike traditional cellular systems in which communication data is received or sent through access network equipment, SL transmission has short delay and low overhead.
  • SL technology can be applied to scenarios where various terminal devices communicate directly.
  • the terminal device in this application refers to any device that communicates using SL technology.
  • the “5G NR system” in the embodiments of this disclosure may also be called a 5G system or an NR system, but those skilled in the art can understand its meaning.
  • the technical solution described in the embodiments of this disclosure can be applied to the 5G NR system, and can also be applied to the subsequent evolution system of the 5G NR system.
  • 3GPP defines two transmission modes: Mode A and Mode B.
  • the transmission resources of the terminal equipment are allocated by the access network equipment (such as the base station).
  • the terminal equipment transmits communication data on the sidelink according to the transmission resources allocated by the access network equipment.
  • the access network equipment may be allocated transmission resources for a single transmission or may be allocated for semi-static transmission.
  • Mode B The terminal device selects transmission resources from the resource pool to transmit communication data. Specifically, the terminal device may select transmission resources from the resource pool by listening, or select transmission resources from the resource pool by random selection.
  • PSCCH Physical Sidelink Control Channel, physical side control channel
  • PSSCH Physical Sidelink Shared Channel, physical side Row shared channel
  • PSCCH and PSSCH are sent in the same time slot.
  • the above-mentioned first-order SCI and second-order SCI may be two side control information with different functions.
  • the first-level SCI is carried in the PSCCH and mainly includes fields related to resource listening, which is convenient for other terminal devices to perform resource exclusion and resource selection after decoding.
  • the PSSCH also carries the second-order SCI.
  • the second-order SCI mainly includes data demodulation-related fields to facilitate other terminal equipment to demodulate the data in the PSSCH.
  • the terminal device selects transmission resources to send data.
  • Resource reservation is the prerequisite for resource selection.
  • Resource reservation means that the terminal equipment sends the first sideline control information (such as the first-order SCI above) in the PSCCH to reserve resources to be used next.
  • first sideline control information such as the first-order SCI above
  • resource reservation within a TB Transport Block
  • resource reservation between TBs is supported as well as resource reservation between TBs.
  • the terminal device sends the first sideline control information, using the "Time resource assignment (time resource assignment)" and “Frequency resource assignment (frequency resource assignment)" fields to indicate the N time-frequency resources of the current TB ( Including the resources currently used for sending).
  • Nmax is equal to 2 or 3.
  • the above-mentioned N indicated time-frequency resources should be distributed within W time slots.
  • W is equal to 32.
  • the "Resource reservation period (resource reservation period)" field is used to reserve resources between TBs.
  • the terminal device uses the "Time resource assignment” and “Frequency resource assignment” fields to indicate the time-frequency resource locations of TB1's initial transmission and retransmission 1. Note that is ⁇ (t 1 ,f 1 ),(t 2 ,f 2 ) ⁇ . Among them, t 1 and t 2 represent the time domain positions of the TB1 initial transmission and retransmission 1 resources, and f 1 and f 2 represent the corresponding frequency domain positions.
  • the SCI (Sidelink Control Information, sidelink control information) also indicates the time-frequency resource ⁇ (t 1 +100 ,f 1 ),(t 2 +100,f 2 ) ⁇ , these two resources are used for the transmission of TB2 initial transmission and retransmission 1.
  • the first sidelink 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.
  • V2X is more flexible.
  • e values are configured, and the terminal device determines the possible values based on the resource pool used.
  • the value of e in the resource pool configuration is the resource reservation period set M. For example, e is less than or equal to 16.
  • the above-mentioned inter-TB reservations can be activated or deactivated on a resource pool basis.
  • the first side row control information includes the "Resource reservation period" field.
  • the "Resource reservation period” field is not included in the first side row control information.
  • the terminal device can obtain the first sideline control information sent by other terminal devices by listening to the PSCCH sent by other terminal devices, thereby learning the resources reserved by other terminal devices.
  • the terminal device selects resources, it will exclude resources reserved by other terminal devices to avoid resource collisions.
  • the terminal device In the NR V2X system, in the above-mentioned mode B, the terminal device needs to select its own resources.
  • the terminal device triggers resource selection or reselection in time slot n or time slot n is the time slot in which the upper layer triggers the physical layer to report the candidate resource set.
  • T proc,1 is 3, 5, 9, and 17 time slots.
  • the terminal device determines T 2min from the value set according to the priority of the data to be sent. For example, when the subcarrier spacing is 15 kHz, the terminal device determines T 2min from the set ⁇ 1, 5, 10, 20 ⁇ according to the priority of the data to be sent.
  • T 2min is greater than or equal to the remaining delay budget of the service
  • T 2 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.
  • the delay requirement is 50 milliseconds. Assume that 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 , then the remaining delay budget is 30 milliseconds.
  • the terminal device performs resource listening from nT 0 to nT proc,0 (excluding nT proc,0 ), and the value of T 0 is 100 or 1100 milliseconds.
  • T proc,0 is 1, 1, 2, and 4 time slots.
  • the terminal device performs resource listening in a time slot belonging to the resource pool used by it within the resource listening window.
  • 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 nT 0 To nT proc,0 resource listening result.
  • Step 1 The terminal device takes all available resources belonging to the resource pool used by the terminal device in the resource selection window 10 as resource set A. Any resource in set A is recorded as R (x, y), x and y respectively indicate the frequency of the resource. domain position and time domain position. Let the initial number of resources in set A be M total . The terminal device excludes resources in resource set A based on the unlistened time slots within the resource listening window 20 (Step 1-1) and/or the resource listening results within the resource listening window 20 (Step 1-2). .
  • the terminal device determines whether the resource R(x,y) or a series of periodic resources corresponding to the resource R(x,y) are consistent with the time slot determined based on the unlistened time slot in Step 1-1 or based on the unlistened time slot in Step 1-2.
  • the resources determined by the intercepted first sidelink control information overlap. 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 t m within the resource listening window 20 and does not listen, the terminal device will reserve data according to time slot t m and each allowed resource in the resource pool used by the terminal device.
  • the resource reservation period is used as the interval to determine the corresponding Q time slots. If the Q time slots overlap with resource R(x,y) or a series of periodic resources corresponding to resource R(x,y), then resource R(x,y) is excluded from resource set A.
  • Q 1 or (Represents rounding up).
  • Tscal is equal to the value of T 2 converted into milliseconds.
  • Prx is one of the resource reservation periods allowed by the resource pool used by the terminal device.
  • Cresel is related to the random count value generated by the terminal device
  • Ptxlg is the number of Ptx converted into logical time slots.
  • Ptx is the resource reservation period of the terminal device.
  • subfigure (a) of Figure 4 shows the case where Cresel is 3, indicating three periodic resources (including R(x, y)) corresponding to the resource R(x, y).
  • the terminal device does not listen in time slot t m , and performs resource exclusion according to each resource reservation period in the resource reservation period set M in the resource pool configuration used.
  • a certain resource reservation period is 1, assuming that the Q value is calculated as 2, then the corresponding Q time slots are mapped from the time slot t m in the subfigure (a) of Figure 4, with the resource reservation period 1 as the interval. 2 time slots marked with horizontal hatching.
  • the corresponding Q time slots are mapped from the time slot t m in the subfigure (a) of Figure 4 and are spaced by the resource reservation period 2.
  • the next 1 dotted shading identifies the time slot.
  • the terminal device will determine whether the Q time slots corresponding to each reservation period overlap with resource R(x,y) or a series of periodic resources corresponding to resource R(x,y). If they overlap, they will be selected from the resource set. Exclude resource R(x,y) from A.
  • the terminal device may not perform the above Step 1-1.
  • Step 1-1 if the remaining resources in resource set A are less than M total *X, initialize resource set A to all available resources belonging to the resource pool used by the terminal device in the resource selection window 10 and then execute Step 1-2.
  • Step 1-2 If the terminal equipment detects the first sidelink control information transmitted in the PSCCH within the time slot t m of the resource listening window 20, measure the SL-RSRP (Sidelink Reference Signal Received Power, sidelink) of the PSCCH. Reference signal received power) or the SL-RSRP of the PSSCH scheduled by the PSCCH (that is, the SL-RSRP of the PSSCH sent in the same time slot as the PSCCH).
  • SL-RSRP Systemlink Reference Signal Received Power, sidelink
  • the terminal device will use the The resource reservation period carried in the row control information is used as the interval to determine the corresponding Q time slots.
  • the terminal equipment assumes that it also receives the first sideline control information with the same content in the Q time slots.
  • the terminal equipment will determine the resources and resources indicated by the "Time resource assignment” and “Frequency resource assignment" fields of the first sideline control information received in time slot t m and the Q first sideline control information received.
  • R(x,y) or a series of periodic resources corresponding to resource R(x,y) overlap, if so, exclude the corresponding resource R(x,y) from set A.
  • the above Q 1 or (Represents rounding up).
  • Tscal is equal to the value of T 2 converted into milliseconds.
  • Prx is the resource reservation period carried in the first sidelink control information detected.
  • Cresel is related to the random count value generated by the terminal device
  • Ptxlg is the number of Ptx converted into logical time slots.
  • Ptx is the resource reservation period of the terminal device.
  • subfigure (b) of Figure 4 shows the case where Cresel is 3, indicating three periodic resources (including R(x, y)) corresponding to the resource R(x, y).
  • the terminal equipment will determine the "Time resource assignment" and "Frequency resource assignment" field indications of the first sideline control information received in time slot tm and the first sideline control information received in time slot tm +Prxlg Whether resources 1, 2, 3, 4, 5, 6 overlap with resource R(x,y) or a series of periodic resources corresponding to resource R(x,y). If they overlap and meet the RSRP conditions, they will be selected from the resource set. Exclude resource R(x,y) from A.
  • the terminal device determines the first sideline received in time slot tm . Whether the resource indicated by the "Time resource assignment” and “Frequency resource assignment” fields of the control information on one side overlaps with resource R(x,y) or a series of resources corresponding to resource R(x,y). If it overlaps, then Resource R(x,y) is excluded from resource set A.
  • resource set A If the remaining resources in resource set A are less than M total *X after the above resources are excluded, raise the SL-RSRP threshold by 3dB and perform Step 1 again.
  • the physical layer reports the resource set A after resource exclusion as a candidate resource set to the higher layer.
  • Step 2 The higher level 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, which contains the SL-RSRP thresholds corresponding to all priority combinations. Resource pool configuration can be network configuration or preconfigured.
  • the SL-RSRP thresholds corresponding to different priority combinations are represented by ⁇ ij , where i in ⁇ ij is the priority.
  • the value of priority level P1, j is the value of priority level P2.
  • Table 1 SL-RSRP threshold table
  • the terminal device listens to the PSCCH sent by other terminal devices, it 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.
  • the terminal device determines the SL by looking up Table 1. -RSRP threshold.
  • Resource pool configuration can be network configuration or preconfigured.
  • the possible values of X mentioned above 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.
  • the terminal device determines the value of X based on the priority of the data to be sent and the corresponding relationship.
  • Resource pool configuration can be configured by the network or pre-configured.
  • the terminal device sends the first sideline control information to indicate the time-frequency resources and reserves the resources to be used next.
  • the terminal device that performs resource selection will decode the first sideline control information sent by other terminal devices, learn the resources reserved by other terminal devices, and exclude the corresponding resources when selecting resources, thereby avoiding resource collision.
  • the terminal device performing resource selection performs resource exclusion, the physical time (for example, 100 milliseconds) indicated by the "resource reservation period" field in the decoded first sideline control information will be converted into the corresponding number of logical time slots. Then, use the number of logical time slots to exclude resources:
  • Prsvp is the resource reservation period.
  • Prsvp is the resource reservation period indicated by "resource reservation period" in the first sideline control information heard by the terminal device, or the resource reservation period allowed in the resource pool. , or is the resource reservation period of the terminal device, and P'rsvp is the calculated corresponding number of logical time slots.
  • T’max is an SFN (System Frame Number) period or the number of time slots belonging to the resource pool or transmission resource pool of the terminal device within 10240 milliseconds.
  • the above introduction is an SL communication method in NR-V2X, that is, the terminal device independently selects transmission resources through resource listening and transmits data 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.
  • OCB Olet Control Bandwidth, channel occupied bandwidth
  • PSD Power Spectral Density, power spectral density
  • OCB Interlaced Resource Block, comb resource block
  • the 80% bandwidth requirement here means that the span between the lowest and highest PRB transmission accounts for 80% of the total bandwidth. If it is continuously occupied in the frequency domain as shown in Figure 2, it will occupy 80% of the total bandwidth. Basically, only one user can be transmitted in one time slot. After using the comb structure, the continuous occupancy of the frequency domain in Figure 2 is changed into discrete occupancy, which not only satisfies 80% of the span, but also does not really occupy 80% of the bandwidth.
  • a comb resource includes N discrete PRBs in the frequency domain.
  • a total of M comb resources are included in the frequency band.
  • the PRBs included in the mth comb are ⁇ m,M+m,2M+m,3M+m,... ⁇ .
  • One comb tooth The frequency domain interval of two adjacent PRBs in the tooth is the same, that is, 5 PRBs apart.
  • the number in the box in the figure represents the comb tooth index.
  • the PRB included in a comb tooth can also be called an Interlaced Resource Block (IRB), and the comb tooth can also be called an IRB.
  • IRB Interlaced Resource Block
  • RB set Resource Block set, resource block set
  • SL-U Resource Block set
  • guard bands may or may not be configured between the resource block sets.
  • one RB set corresponds to a frequency domain width of 20MHz.
  • Communication equipment needs to perform LBT (Listen Before Talk) on unlicensed spectrum. Data can only be sent after LBT is successful.
  • the granularity of LBT is an RB set, so an RB set can also be called an LBT subband. That is, if the communication device sends data on a certain RB set, LBT needs to be performed on the corresponding RB set, and the transmission is performed after the LBT is successful.
  • An RB set includes multiple IRBs. For simplicity, in Figure 6, one resource block actually corresponds to one IRB in Figure 5.
  • the BWP configured for communication equipment includes an integer number of RB Sets.
  • the resource pool contains an integer number of RB sets (and guard bands between RB sets), and each RB set contains multiple IRBs.
  • the concept of sub-channel in the resource pool continues to be used, that is, a sub-channel is defined as one or more IRBs.
  • the concept of sub-channel is not used, and the terminal device directly or multiple IRBs.
  • Type 1 Generate a random count value. If the listening time slot is idle, it will be decremented by 1. If it is busy, it will not be decremented. If it is reduced to 0, the channel can be accessed for transmission. If the count value decreases to 0 and the communication device has no data to transmit, then when the communication device needs to send data, it does not need to regenerate the count value. It only needs to perform an LBT with a fixed length of time. If the LBT is successful, the fixed length If the inner channel is free, access the channel.
  • Type 2A The communication device can monitor the channel with a length of 25 microseconds (recorded as Tshort). If the monitoring time slots in Tshort are all idle, the communication device can directly access the channel.
  • Type 2B The communication device can monitor the channel with a length of 16 microseconds (recorded as Tf). If the monitoring time slot in Tf is idle, the communication device can directly access the channel.
  • communication equipment needs to perform LBT first, and can access the channel only after LBT is successful.
  • LBT succeeds and accesses the channel
  • the time it occupies the channel is called COT (Channel Occupancy Time).
  • COT Channel Occupancy Time
  • the concept of B2B transmission may be introduced in SL-U. That is, communication equipment continuously transmits on multiple time slots, improving the utilization of COT.
  • continuous use/occupation of channels is also beneficial to competing with different systems for channels. For example, when the SL-U terminal uses B2B transmission, because the channel is continuously occupied, WIFI (Wireless-Fidelity, Wireless Fidelity) users cannot successfully access the channel with LBT at the same time.
  • WIFI Wireless-Fidelity, Wireless Fidelity
  • the concept of B2B transmission may be introduced in the SL-U system, that is, the terminal device transmits on multiple consecutive time slots. Therefore, how to ensure that the terminal device selects continuous transmission resources in the time domain when selecting resources is a problem that needs to be solved, and the standards for this problem have not yet been discussed.
  • this problem can be solved at the physical layer, that is, the candidate resources in the candidate resource set reported by the physical layer are continuous resources in the time domain, and the higher level still randomly selects resources from the candidate resource set.
  • this problem can also be solved at a high level, that is, the candidate resources in the candidate resource set reported by the physical layer can be discrete or continuous in the time domain.
  • the high level considers B2B transmission when selecting resources in the candidate resource set, and gives priority to the time domain. on continuous resources.
  • this application conducts a classified discussion on the above solutions and refines the relevant terminal device behaviors. Below, the technical solution of the present application will be introduced and explained through several embodiments.
  • Figure 7 shows a flow chart of a resource selection method provided by an embodiment of the present application.
  • This method can be applied to the network architecture shown in Figure 1, for example, the method can be executed by a terminal device.
  • the method may include the following steps:
  • Step 710 After excluding resources from the first resource set, select transmission resources in the first resource set. Any resource in the first resource set is the first resource, and the first resource corresponds to N consecutive times in the time domain. Unit, N is an integer greater than 1.
  • the first resource set may include at least one resource, and each resource in the first resource set is a first resource. That is to say, each resource in the first resource set corresponds to multiple consecutive resources in the time domain. time unit.
  • the first resource corresponds to two or more consecutive time units in the time domain.
  • the "time unit” mentioned in the embodiment of this application may be a time slot, a subframe, or other time unit, which is not limited in this application.
  • the “time unit” mentioned elsewhere in this article please refer to this explanation and will not be repeated.
  • the first resource corresponds to N consecutive time slots in the time domain, and N is an integer greater than 1.
  • the first resource corresponding to N consecutive time units in the time domain means that the first resource corresponds to N consecutive physical time units in the time domain. Taking the time unit as a time slot as an example, the first resource corresponds to N consecutive physical time slots in the time domain.
  • the first resource corresponding to N consecutive time units in the time domain means that the first resource corresponds to N consecutive time units belonging to the resource pool in the time domain.
  • the time unit belonging to the resource pool may also be called a logical time unit, that is, the first resource corresponds to N consecutive logical time units in the time domain.
  • the first resource corresponds to N consecutive time slots belonging to the resource pool in the time domain, or in other words, the first resource corresponds to N consecutive logical time slots in the time domain.
  • the N consecutive time units belonging to the resource pool corresponding to the first resource in the time domain are also N consecutive physical times. unit; if the time unit in the resource pool is a discontinuous physical time unit in the time domain, then the N consecutive time units belonging to the resource pool corresponding to the first resource in the time domain may be N discontinuous physical time unit.
  • the above-mentioned N may be configured by the network, or pre-configured, or configured to the physical layer by the high-level layer of the terminal device, or depend on the implementation of the terminal device, or be a preset value stipulated by the standard.
  • the above N is determined by at least one of the following: COT duration, remaining COT duration, channel access priority, data transmission priority, CBR (Channel Busy Ratio, channel busy rate), and remaining delay budget.
  • N is included in the resource pool configuration.
  • the first resource corresponds to U consecutive sub-channels or IRBs in the frequency domain, each sub-channel includes one or more consecutive IRBs, and U is a positive integer.
  • U when U is equal to 1, the first resource corresponds to one sub-channel or IRB in the frequency domain; when U is greater than or equal to 2, the first resource corresponds to U consecutive sub-channels or IRBs in the frequency domain.
  • U consecutive sub-channels or IRBs are located in the same set of resource blocks.
  • the above U may be configured by the network, or pre-configured, or configured to the physical layer by a higher layer of the terminal device, or depend on the implementation of the terminal device, or be a preset value stipulated by the standard.
  • the terminal device performs the following steps 1 to 3 to exclude resources:
  • the resource selection window is [n+T 1 , n+T 2 ], and the resource listening window is [nT 0 , nT proc,0 ); where n is the terminal device triggering resource selection or reselection.
  • the time unit, or the time unit for the upper layer to trigger the physical layer to report the candidate resource set, T 1 , T 2 , T 0 and T proc,0 are set values. For details, please refer to the introduction above.
  • the initialized first resource set includes at least one first resource within the resource selection window;
  • the above-mentioned first resource set is recorded as resource set A, and resource set A includes resources within the resource selection window.
  • all first resources in the resource selection window are initialized as resource set A, that is, any resource in resource set A is recorded as the first resource.
  • the first resource is R(x,y)
  • x is used to indicate the frequency domain location of the first resource
  • y is used to indicate the time domain location of the first resource.
  • x is used to indicate the frequency domain starting position of the first resource
  • y is used to indicate the time domain starting position of the first resource.
  • R(x,y) represents the consecutive N time slots starting from time slot y, and the time corresponding to the consecutive U sub-channels or IRB starting from sub-channel or IRB x. frequency resources.
  • the number of first resources in the initialized resource set A be M total .
  • a resource exclusion step to exclude resources from the first resource set; wherein, the resource exclusion step includes: a first exclusion step and/or a second exclusion step, and the first exclusion step is used to exclude uninterrupted resources within the resource listening window.
  • the listening time unit performs resource elimination, and the second elimination step is used to exclude resources based on the first sideline control information intercepted within the resource listening window.
  • the first exclusion step includes: determining the non-listening time unit and each resource reservation period in a set of resource reservation periods configured in the resource pool or a subset of the set of resource reservation periods. Listen to the Q1 time units corresponding to the time unit, Q1 is a positive integer; if the Q1 time units overlap with the first resource in the first resource set or the resource corresponding to the first resource, then exclude the first resource set from the first resource set.
  • One resource is for example, the above resource reservation period set or a subset of the resource reservation period set may be configured by the network, or preconfigured, or depend on the implementation of the terminal device.
  • the resource corresponding to the first resource is: a periodic resource whose frequency domain position is the same as the first resource and whose time domain position exists at a fixed time interval.
  • the resources corresponding to the first resource include the first resource.
  • the fixed time interval may be determined according to the resource reservation period of the terminal device.
  • the terminal device may not perform the first exclusion step, that is, the terminal device may not perform the step of excluding resources from the resource set A based on the non-listening time unit within the resource listening window.
  • the second exclusion step includes: if the resource indicated by the first sidelink control information overlaps with the first resource in the first resource set or a resource corresponding to the first resource and meets the RSRP threshold condition, then removing the resource from the first resource set.
  • the first resource is excluded from a resource set.
  • the second exclusion step includes: determining the Q2 corresponding to the first time unit based on the first time unit in which the first sideline control information is intercepted and the resource reservation period indicated in the first sideline control information. time units, and it is assumed that the first sideline control information with the same content will be received within Q2 time units, Q2 is a positive integer; if the resource indicated by the intercepted and assumed first sideline control information will be received If the resource overlaps with the first resource in the first resource set or a resource corresponding to the first resource and satisfies the RSRP threshold condition, the first resource is excluded from the first resource set.
  • the RSRP threshold condition includes: the RSRP of the PSCCH corresponding to the first sidelink control information or the RSRP of the PSSCH scheduled by the PSCCH is greater than the RSRP threshold.
  • the resources indicated by the first sideline control information are resources determined according to at least one of the following indication fields:
  • the first indication domain is used to indicate the time domain location of the resource
  • the second indication field is used to indicate the frequency domain location of the resource
  • the third indication field is used to indicate whether it is a B2B transmission
  • the fourth indication field is used to indicate the transmission round in B2B transmission.
  • This transmission round can be understood as the location of the resource in B2B transmission, or the number of transmissions in B2B transmission, and so on.
  • the fourth indication field is used to indicate the resource corresponding to the first sideline control information, or the resource for transmitting the first sideline control information, the position in the B2B transmission or the number of transmissions in the B2B transmission. .
  • the resources indicated by the first sidelink control information are resources of one or more single time units.
  • the resources indicated by the first sidelink control information are one or more single time slot resources.
  • the resource indicated by the first sidelink control information is one or more B2B transmission groups.
  • the B2B transmission group refers to a group of continuous single-time unit resources.
  • a B2B transmission group refers to a group of contiguous single-slot resources.
  • the resource exclusion step after performing the resource exclusion step and excluding the first resource in resource set A, if the number of remaining first resources in resource set A is less than Z*M total , increase the RSRP threshold H dB, Initialize resource set A and perform the above resource exclusion steps again to exclude the first resource in resource set A; if the number of remaining first resources in resource set A is greater than or equal to Z*M total , there is no need to exclude resource set A Perform resource exclusion again, that is, there is no need to perform resource exclusion on the first resource set again (or stop resource exclusion on the first resource set); where, M total is the total number of first resources included in the initialized resource set A, Z and H are set values.
  • Z and H are configured by the network, or pre-configured, or depend on the implementation of the terminal device, or are preset values specified by the standard.
  • the terminal device selects transmission resources from the resource set A (or candidate resource set) after resource exclusion.
  • the transmission resource is selected randomly.
  • the technical solution provided by this embodiment defines that the resources in the resource set are resources corresponding to multiple continuous time units in the time domain.
  • the candidate resource set obtained after resource exclusion of the resource set also includes the time domain. This ensures that the terminal device can select continuous resources in the time domain when selecting transmission resources from the candidate resource set, supporting B2B transmission, which is conducive to improving the utilization of COT and helping SL-U users to compete for channels. .
  • the terminal device determines the resource selection window 10 from n+T 1 to n+T 2 and the resource listening window 20 from nT 0 to nT proc,0 (excluding nT proc,0 ) , take the resources corresponding to 3 time slots in any time domain and one sub-channel in the frequency domain within the resource selection window 10 as R(x, y).
  • x represents the starting position in the frequency domain of R(x,y)
  • y represents the starting position in the time domain.
  • the example R(x,y) in Figure 8 corresponds to one subchannel in the frequency domain, and one subchannel corresponds to one IRB.
  • one IRB includes three PRBs.
  • the terminal device does not listen in time slot m, and then excludes resources from resource set A according to the resource reservation period set M in the resource pool configuration used. Resource exclusion is performed for each resource reservation period in the resource reservation period. For one of the resource reservation periods 1, assuming that the Q value is calculated as 2, the corresponding Q time slots are mapped from time slot m in subfigure (a) of Figure 8 The next two time slots marked with horizontal hatching are separated by resource reservation period 1.
  • the corresponding Q time slots are the interfaces mapped from the time slot m in the subfigure (a) of Figure 8 with the resource reservation period 2 as the interval.
  • the time slots are identified by 1 dot shading down. If the corresponding Q time slots determined by the terminal device based on the unlistened time slots overlap with R(x,y) or the resources corresponding to R(x,y), then the resource R(x,y) is excluded from the resource set A. .
  • Resource set A is excluded based on the sidelink control information heard.
  • the terminal device detects the sidelink control information on time slot m.
  • the sidelink control information indicates the sidelink control information.
  • the resources identified by the line shading indicate two B2B groups. If the resources indicated by the sideline control information overlap with the resource R(x,y) or the resource corresponding to the resource R(x,y), and the sideline control If the RSRP of the PSCCH corresponding to the information or the PSSCH scheduled by the PSCCH is greater than the RSRP threshold, the resource R(x, y) is excluded from the resource set A.
  • the resources corresponding to the above R(x,y) are periodic resources with the same frequency domain position as R(x,y) and a fixed time interval in the time domain position.
  • the fixed time interval is determined according to the resource reservation period of the terminal device, and the resources corresponding to R(x, y) include resources R(x, y). For example, in Figure 8, there are three transmission resources corresponding to R(x, y).
  • the side row control information is used to eliminate resources until the number of remaining R(x,y) after resource set A is eliminated is greater than or equal to Z*M total .
  • transmission resources are randomly selected.
  • Figure 9 shows a flow chart of a resource exclusion method provided by an embodiment of the present application.
  • This method can be applied to the network architecture shown in Figure 1, for example, the method can be executed by a terminal device.
  • the method may include the following steps:
  • Step 910 After excluding resources from the second resource set, if the number of second resources that meet the first condition in the second resource set is less than the first threshold, raise the RSRP threshold, initialize the second resource set, and then re-allocate the second resource.
  • the set is used to exclude resources; wherein, the first condition includes that there are second resources that have not been excluded for at least N consecutive time units starting from the time unit where the second resource is located, and N is an integer greater than 1.
  • the second resource is a single time unit resource, that is, the second resource only corresponds to one time unit in the time domain.
  • the "time unit” mentioned in the embodiment of this application may be a time slot, a subframe, or other time unit, which is not limited in this application.
  • the “time unit” mentioned elsewhere in this article please refer to this explanation and will not be repeated.
  • the second resource only corresponds to one time slot in the time domain, and the second resource may also be called a single time slot resource.
  • the RSRP threshold is raised. , and then perform resource exclusion on the second resource set again after initializing the second resource set.
  • At least N consecutive time units are at least N consecutive physical time units. Taking the time unit as a time slot as an example, at least N consecutive time units are at least N consecutive physical time slots.
  • At least N consecutive time units are at least N consecutive time units belonging to the resource pool.
  • the time unit belonging to the resource pool can also be called a logical time unit, that is, at least N consecutive logical time units. Taking the time unit as a time slot as an example, at least N consecutive time units are at least N consecutive time slots belonging to the resource pool, or at least N consecutive logical time slots.
  • time units in the resource pool are continuous physical time units in the time domain, then at least N continuous time units belonging to the resource pool are also at least N continuous physical time units; if the time units in the resource pool The time unit is a non-continuous physical time unit in the time domain, so at least N consecutive time units belonging to the resource pool may be at least N non-continuous physical time units.
  • the first condition includes that there are non-excluded second resources for N consecutive time units starting from the time unit where the second resource is located.
  • N can be configured by the network, or pre-configured, or configured by the higher layer of the terminal device to the physical layer, or depend on the implementation of the terminal device, or be a preset value specified by the standard.
  • the second resource corresponds to U consecutive sub-channels or comb resource blocks IRB in the frequency domain, each sub-channel includes one or more consecutive IRBs, and U is a positive integer.
  • the second resource corresponds to one sub-channel or IRB in the frequency domain; when U is greater than or equal to 2, the second resource corresponds to U consecutive sub-channels or IRBs in the frequency domain.
  • U consecutive sub-channels or IRBs are located in the same set of resource blocks.
  • the above U may be configured by the network, or pre-configured, or configured to the physical layer by a higher layer of the terminal device, or depend on the implementation of the terminal device, or be a preset value stipulated by the standard.
  • the terminal device performs the following steps 1 to 3 to exclude resources:
  • the resource selection window is [n+T 1 , n+T 2 ], and the resource listening window is [nT 0 , nT proc,0 ); where n is the terminal device triggering resource selection or reselection.
  • the time unit, or the time unit for the upper layer to trigger the physical layer to report the candidate resource set, T 1 , T 2 , T 0 and T proc,0 are set values. For details, please refer to the introduction above.
  • the initialized second resource set includes at least one second resource within the resource selection window;
  • the above-mentioned second resource set is recorded as resource set A, and resource set A includes all available resources within the resource selection window.
  • the available resources are resources of a single time unit, such as resources of a single time slot.
  • the available resources are resources in a resource pool.
  • all second resources within the resource selection window are initialized as resource set A, that is, any resource in resource set A is recorded as a second resource, and the second resource is a single time unit resource.
  • the second resource is R(x,y), x is used to indicate the frequency domain location of the second resource, and y is used to indicate the time domain location of the second resource.
  • y is used to indicate the time domain starting position of the second resource.
  • R(x,y) represents the consecutive U sub-channels or IRBs located at time slot y starting from sub-channel or IRB x.
  • let the number of second resources in the initialized resource set A be M total .
  • a resource exclusion step to exclude resources from the second resource set; wherein the resource exclusion step includes: a first exclusion step and/or a second exclusion step, and the first exclusion step is used to exclude uninterpreted resources within the resource listening window.
  • the listening time unit performs resource elimination, and the second elimination step is used to exclude resources based on the first sideline control information intercepted within the resource listening window.
  • the first exclusion step includes: determining the non-listening time unit and each resource reservation period in a set of resource reservation periods configured in the resource pool or a subset of the set of resource reservation periods. Listen to the Q1 time units corresponding to the time unit, Q1 is a positive integer; if the Q1 time units overlap with the second resource in the second resource set or the resource corresponding to the second resource, then exclude the third resource from the second resource set.
  • Two resources For example, the above resource reservation period set or a subset of the resource reservation period set may be configured by the network, or preconfigured, or depend on the implementation of the terminal device.
  • the resource corresponding to the second resource is: a periodic resource whose frequency domain position is the same as the second resource and whose time domain position exists at a fixed time interval.
  • the resources corresponding to the second resource include the second resource.
  • the fixed time interval may be determined according to the resource reservation period of the terminal device.
  • the terminal device may not perform the first exclusion step, that is, the terminal device may not perform the step of excluding resources from the resource set A based on the non-listening time unit within the resource listening window.
  • the second exclusion step includes: if the resource indicated by the first sidelink control information overlaps with the second resource in the second resource set or the resource corresponding to the second resource and meets the RSRP threshold condition, then removing the resource from the second resource set. The second resource is excluded from the second resource set.
  • the second exclusion step includes: determining the Q2 corresponding to the first time unit based on the first time unit in which the first sideline control information is intercepted and the resource reservation period indicated in the first sideline control information. time units, and it is assumed that the first sideline control information with the same content will be received within Q2 time units, Q2 is a positive integer; if the resource indicated by the intercepted and assumed first sideline control information will be received If the resource overlaps with the second resource or a resource corresponding to the second resource in the second resource set and meets the RSRP threshold condition, the second resource is excluded from the second resource set.
  • the RSRP threshold condition includes: the RSRP of the PSCCH corresponding to the first sidelink control information or the RSRP of the PSSCH scheduled by the PSCCH is greater than the RSRP threshold.
  • the resources indicated by the first sideline control information are resources determined according to at least one of the following indication fields:
  • the first indication domain is used to indicate the time domain location of the resource
  • the second indication field is used to indicate the frequency domain location of the resource
  • the third indication field is used to indicate whether it is a B2B transmission
  • the fourth indication field is used to indicate the transmission round in B2B transmission.
  • This transmission round can be understood as the location of the resource in B2B transmission, or the number of transmissions in B2B transmission, and so on.
  • the fourth indication field is used to indicate the resource corresponding to the first sideline control information, or the resource for transmitting the first sideline control information, the position in the B2B transmission or the number of transmissions in the B2B transmission. .
  • the resources indicated by the first sidelink control information are resources of one or more single time units.
  • the resources indicated by the first sidelink control information are one or more single time slot resources.
  • the resource indicated by the first sidelink control information is one or more B2B transmission groups.
  • the B2B transmission group refers to a group of continuous single-time unit resources.
  • a B2B transmission group refers to a group of contiguous single-slot resources.
  • condition 1 includes that the number of second resources remaining in the second resource set is less than the second threshold; condition 2 includes that the number of second resources that meet the first condition in the second resource set is less than the first threshold, and the first condition is as above introduce.
  • the RSRP threshold H dB is increased, and the second resource set is initialized.
  • resource set perform the resource exclusion step again to exclude the second resource in the second resource set; if the second resource set after resource exclusion does not meet condition 1, then the second resource set after resource exclusion is determined is the final second resource set.
  • Condition 1 is as above.
  • the RSRP threshold H dB is increased and the second resource set is initialized.
  • resource set perform the resource exclusion step again to exclude the second resource in the second resource set; if the second resource set after resource exclusion does not meet condition 2, the second resource set after resource exclusion is determined is the final second resource set.
  • Condition 2 is as above.
  • the resource exclusion step after performing the resource exclusion step to exclude the second resource in the second resource set, if the second resource set after resource exclusion satisfies at least one of condition 1 and condition 2, then increase RSRP threshold H dB, initialize the second resource set, perform the resource exclusion step again, and exclude the second resource in the second resource set; if the second resource set after resource exclusion does not meet condition 1 and does not meet condition 2, Then the second resource set after resource exclusion is determined as the finally obtained second resource set.
  • Condition 1 and Condition 2 are as described above. In this embodiment, as long as the second resource set satisfies at least one of condition 1 and condition 2, the resource exclusion step is reinitialized and executed again, so that the final second resource set has both sufficient resources and sufficient resources. Many continuous resources.
  • the above first condition is that there are at least N consecutive time slots in the same resource block set starting from the time slot where the resource R(x, y) is located, which are not excluded or remaining.
  • R(x,y) For example, the above-mentioned first condition is that there are R(x, y) that are not excluded or remaining in the same resource block set for N consecutive time slots starting from the time slot where the resource R(x, y) is located.
  • the second resources within at least N consecutive (or N consecutive) time units are located in the same resource block set.
  • the frequency domain positions of the second resources within at least N consecutive (or N consecutive) time units are the same or different.
  • the frequency domain positions of R(x, y) in at least N consecutive (or N consecutive) time slots are the same.
  • the frequency domain positions of R(x, y) in at least N consecutive (or N consecutive) time slots are different.
  • the above-mentioned first threshold can be configured by the network, or pre-configured, or configured to the physical layer by a higher layer of the terminal device, or depends on the implementation of the terminal device, or is a preset value stipulated by the standard.
  • the first threshold is determined based on at least one of the following: COT duration, remaining COT duration, channel access priority, data transmission priority, CBR, and remaining delay budget.
  • the first threshold is Z*M total , and Z can be configured by the network, or pre-configured, or configured to the physical layer by the upper layer of the terminal device, or depends on the implementation of the terminal device, or is a preset value specified by the standard. .
  • the above-mentioned second threshold may be configured by the network, or pre-configured, or configured to the physical layer by a higher layer of the terminal device, or depend on the implementation of the terminal device, or be a preset value stipulated by the standard.
  • the second threshold is X*M total , and .
  • the second resource set after resource exclusion is recorded as a candidate resource set, and the terminal device selects transmission resources from the candidate resource set.
  • the terminal device preferentially selects resources that are continuous in the time domain as transmission resources from the candidate resource set.
  • the technical solution provided by this embodiment ensures that there is a certain number of continuous resources in the time domain in the candidate resource set obtained after resource exclusion during resource exclusion, thereby ensuring that the terminal device selects transmission resources from the candidate resource set.
  • continuous resources in the time domain can be selected to support B2B transmission, which will help improve the utilization of COT and help SL-U users compete for channels.
  • one sub-channel in Figure 10 corresponds to an IRB (that is, each label in the frequency domain 0, 1, 2, 3, 4 in the figure represents an IRB), assuming R (x, y ) are the resources corresponding to two consecutive sub-channels starting from sub-channel , R(0,1) represents the resources corresponding to sub-channels 0 and 1 in time slot 1.
  • Initialize resource set A to all R(x,y) in time slots 0-11.
  • R(x ,y) is M total .
  • resource exclusion is performed based on uninterrupted time slots and/or based on intercepted sidelink control information.
  • the remaining resources after exclusion are as shown in Figure 10, including R(1,1), R(0, 2), R(1,2), R(2,2)...R(2,6), R(3,6), R(2,7),..., R(1,11).
  • N configured by the high layer to the physical layer is 2, and the high layer configures the physical layer parameter Z, and the first threshold is Z*M total .
  • resource set A after resource exclusion satisfies at least one of condition 1 and condition 2
  • increase the RSRP threshold by 3dB initialize resource set A, and perform the above resource exclusion on resource set A again.
  • Condition 1 The number of remaining R(x,y) in resource set A is less than X*M total .
  • Condition 2 The number of remaining R(x,y) in resource set A that satisfies the first condition is less than Z*M total .
  • the first condition is that there are R(x,y) that are not excluded or remaining in N time slots starting from the time slot where R(x,y) is located, and there are R(x,y) in the N time slots.
  • the frequency domain positions of the remaining R(x,y) are the same.
  • the remaining R(x,y) that meet the conditions in Figure 10 include R(1,1), R(0,2), R(1,2), R(2,2), R(2,6), R(3,6), R(2,7), R(3,7), R(0,8), R(1,8), R(0,9).
  • the first condition is that there are R(x,y) that are not excluded or remaining in N time slots starting from the time slot where R(x,y) is located, and there are R(x,y) in the N time slots.
  • the frequency domain positions of the remaining R(x,y) can be the same or different.
  • the remaining R(x,y) that meet the conditions in Figure 10 include R(1,1), R(0,2), R(1,2), R(2,2), R(2,6), R(3,6), R(2,7), R(3,7), R(0,8), R(1,8), R(2,8), R(3,8), R (0,9), R(1,9), R(0,10), R(3,10), R(1,11).
  • the terminal device reports the resource set A after resource exclusion to the higher layer, and the higher layer selects resources in the resource set A.
  • the terminal device initializes the resource set A to be all available resources within the resource selection window, and the terminal device performs resource exclusion based on the non-listening time unit and/or based on the intercepted sideline control information for the resource set A. , please refer to the above introduction for specific steps.
  • the terminal device selects transmission resources from the resource set A (or candidate resource set) after resource exclusion.
  • the terminal device selects transmission resources from the candidate resource set, it preferentially selects time-frequency resources that are continuous in the time domain as transmission resources. For example, when the terminal device randomly selects transmission resources from resource set A, it preferentially selects time-frequency resources that are continuous in the time domain. For example, when the terminal device selects the initial transmission and retransmission of TB 1, the initial transmission and retransmission of TB 1 occupy consecutive time slots. For example, when the terminal device has determined transmission resources for TB 2, when selecting the transmission resources of TB 1, the transmission resources of TB 1 and TB 2 occupy consecutive time slots.
  • the continuous time slots are continuous physical time slots.
  • the continuous time slots are continuous time slots in the resource pool.
  • TB 1 and TB 2 are two different transmission blocks.
  • the candidate resource set reported by the physical layer of the terminal device to the higher layer includes R(1,1), R(0,2), R(1,2), R(2,2), R(2,6), R(3,6), R(2,7), R(3,7), R(0,8), R(1,8), R(0,9).
  • TB 1 corresponds to three transmissions, that is, one initial transmission and two retransmissions. Then the higher layer of the terminal device selects resources R(2,6), R(2,7) and R(0,8) for the transmission of TB 1.
  • the candidate resource set reported by the physical layer of the terminal device to the higher layer includes R(1,1), R(0,2), R(1,2), R(2,2), R(2,6) , R(3,6), R(2,7), R(3,7), R(0,8), R(1,8), R(0,9).
  • the transmission resources of TB2 determined by the terminal equipment are located in time slots 1, 6 and 8.
  • TB1 corresponds to three transmissions, that is, one initial transmission and two retransmissions.
  • the terminal device selects resources R(1,2), R(2,7) and R(0,9) for the transmission of TB 1.
  • the technical solution provided by this embodiment supports B2B transmission by giving priority to resources that are continuous in the time domain when selecting transmission resources from the candidate resource set obtained through resource exclusion, which is beneficial to improving the utilization rate of COT and conducive to SL-U users compete for the channel.
  • Figure 11 shows a block diagram of a resource selection device provided by an embodiment of the present application.
  • the device has the function of implementing the above resource selection method example, and the function can be implemented by hardware, or can also be implemented by hardware executing corresponding software.
  • the device can be the terminal equipment introduced above, or can be set in the terminal equipment.
  • the device 1100 may include: a selection module 1110.
  • the selection module 1110 is configured to select transmission resources in the first resource set after excluding resources from the first resource set. Any resource in the first resource set is the first resource, and the first resource is the first resource.
  • the resource corresponds to N consecutive time units in the time domain, and N is an integer greater than 1.
  • the first resource corresponds to N consecutive time units in the time domain, including:
  • the first resource corresponds to N consecutive physical time units in the time domain
  • the first resource corresponds to N consecutive time units belonging to the resource pool in the time domain.
  • the first resource corresponds to U consecutive sub-channels or IRBs in the frequency domain, each of the sub-channels includes one or more consecutive IRBs, and U is a positive integer.
  • the U consecutive sub-channels or IRBs are located in the same set of resource blocks.
  • the device 1100 further includes an exclusion module 1120 for:
  • a resource exclusion step to exclude resources from the first resource set; wherein the resource exclusion step includes: a first exclusion step and/or a second exclusion step, and the first exclusion step is used to detect resources according to the resource exclusion step.
  • the non-listening time unit within the listening window is used to exclude resources, and the second excluding step is used to exclude resources according to the first sideline control information intercepted within the resource listening window.
  • the first exclusion step includes:
  • the first resource is excluded from the first resource set.
  • the second exclusion step includes:
  • the resource indicated by the first sidelink control information overlaps with the first resource in the first resource set or a resource corresponding to the first resource and meets the RSRP threshold condition, it is excluded from the first resource set. the first resource;
  • Q2 time units corresponding to the first time unit are determined, and it is assumed that The first sideline control information with the same content will be received within the Q2 time units, and Q2 is a positive integer; if the resource indicated by the intercepted and assumed to be received first sideline control information If the resource overlaps with the first resource in the first resource set or a resource corresponding to the first resource and satisfies the RSRP threshold condition, the first resource is excluded from the first resource set.
  • the resources indicated by the first sideline control information are resources determined according to at least one of the following indication fields:
  • the first indication domain is used to indicate the time domain location of the resource
  • the second indication field is used to indicate the frequency domain location of the resource
  • the third indication field is used to indicate whether it is a B2B transmission
  • the fourth indication field is used to indicate the transmission round in B2B transmission.
  • the resources indicated by the first sidelink control information are one or more single-time unit resources; or, the resources indicated by the first sidelink control information are one or more B2B transmission groups.
  • the resource corresponding to the first resource is a periodic resource that has the same frequency domain position as the first resource and a fixed time interval in the time domain position.
  • the N is determined by at least one of the following: COT duration, remaining COT duration, channel access priority, data transmission priority, CBR, and remaining delay budget.
  • Figure 12 shows a block diagram of a resource exclusion device provided by an embodiment of the present application.
  • the device has the function of implementing the above example of the resource exclusion method.
  • the function can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the device can be the terminal equipment introduced above, or can be set in the terminal equipment.
  • the device 1200 may include: an exclusion module 1210.
  • the exclusion module 1210 is configured to, after excluding resources from the second resource set, if the number of second resources that meet the first condition in the second resource set is less than the first threshold, raise the reference signal received power RSRP threshold, After initializing the second resource set, perform resource exclusion on the second resource set again; wherein the first condition includes that the second resource exists and has not been excluded for at least N consecutive time units starting from the time unit where the second resource is located.
  • the second resource, N is an integer greater than 1.
  • the second resource is a single time unit resource.
  • the second resource corresponds to U consecutive sub-channels or IRBs in the frequency domain, each of the sub-channels includes one or more consecutive IRBs, and U is a positive integer.
  • the U consecutive sub-channels or IRBs are located in the same set of resource blocks.
  • the exclusion module 1210 is also configured to: if the number of second resources in the second resource set that meet the first condition is less than the first threshold, and the number of second resources in the second resource set is If the number of remaining second resources is less than the second threshold, perform the steps of raising the RSRP threshold, initializing the second resource set, and then excluding resources from the second resource set again.
  • the at least N consecutive time units are: at least N consecutive physical time units; or, at least N consecutive time units belonging to the resource pool.
  • the exclusion module 1210 is also used to:
  • a resource exclusion step to exclude resources from the second resource set; wherein the resource exclusion step includes: a first exclusion step and/or a second exclusion step, and the first exclusion step is used to detect resources according to the resource exclusion step.
  • the non-listening time unit within the listening window is used to exclude resources, and the second excluding step is used to exclude resources according to the first sideline control information intercepted within the resource listening window.
  • the first exclusion step includes:
  • the second resource is excluded from the second resource set.
  • the second exclusion step includes:
  • the resource indicated by the first sidelink control information overlaps with the second resource in the second resource set or the resource corresponding to the second resource and meets the RSRP threshold condition, then it is excluded from the second resource set. the second resource;
  • Q2 time units corresponding to the first time unit are determined, and it is assumed that The first sideline control information with the same content will be received within the Q2 time units, and Q2 is a positive integer; if the resource indicated by the intercepted and assumed to be received first sideline control information If the resource overlaps with the second resource in the second resource set or a resource corresponding to the second resource and satisfies the RSRP threshold condition, the second resource is excluded from the second resource set.
  • the resources indicated by the first sideline control information are resources determined according to at least one of the following indication fields:
  • the first indication domain is used to indicate the time domain location of the resource
  • the second indication field is used to indicate the frequency domain location of the resource
  • the third indication field is used to indicate whether it is a B2B transmission
  • the fourth indication field is used to indicate the transmission round in B2B transmission.
  • the resources indicated by the first sideline control information are one or more single-time unit transmission resources; or, the resources indicated by the first sideline control information are one or more B2B transmission groups. .
  • the resource corresponding to the second resource is a periodic resource that has the same frequency domain position as the second resource and a fixed time interval in the time domain position.
  • the first threshold is determined based on at least one of the following: COT duration, remaining COT duration, channel access priority, data transmission priority, CBR, and remaining delay budget.
  • the terminal device 1300 may include: a processor 1301, a transceiver 1302, and a memory 1303.
  • the processor 1301 includes one or more processing cores.
  • the processor 1301 executes various functional applications and information processing by running software programs and modules.
  • the transceiver 1302 may include a receiver and a transmitter.
  • the receiver and the transmitter may be implemented as the same wireless communication component, and the wireless communication component may include a wireless communication chip and a radio frequency antenna.
  • Memory 1303 may be connected to processor 1301 and transceiver 1302.
  • the memory 1303 can be used to store a computer program executed by the processor, and the processor 1301 is used to execute the computer program to implement each step in the above method embodiment.
  • the processor 1301 is configured to select transmission resources in the first resource set after excluding resources from the first resource set, and any resource in the first resource set is the first resource.
  • the first resource corresponds to N consecutive time units in the time domain, and N is an integer greater than 1.
  • the processor 1301 after the processor 1301 performs resource exclusion on the second resource set, if the number of second resources that meet the first condition in the second resource set is less than the first threshold, raise the reference Signal received power RSRP threshold, after initializing the second resource set, perform resource exclusion on the second resource set again; wherein the first condition includes at least N consecutive times starting from the time unit where the second resource is located There are second resources that have not been excluded in all units, and N is an integer greater than 1.
  • memory may be implemented by any type of volatile or non-volatile storage device, or combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable only Read memory, erasable programmable read-only memory, static ready-access memory, read-only memory, magnetic memory, flash memory, programmable read-only memory.
  • Embodiments of the present application also provide a computer-readable storage medium.
  • a computer program is stored in the storage medium, and the computer program is used to be executed by a processor to implement the above resource selection method or resource exclusion method.
  • the computer-readable storage medium may include: ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives, solid state drive) or optical disk, etc.
  • random access memory can include ReRAM (Resistance Random Access Memory, resistive random access memory) and DRAM (Dynamic Random Access Memory, dynamic random access memory).
  • Embodiments of the present application also provide a chip, which includes programmable logic circuits and/or program instructions, and is used to implement the above resource selection method or resource exclusion method when the chip is running.
  • Embodiments of the present application also provide a computer program product.
  • the computer program product includes computer instructions.
  • the computer instructions are stored in a computer-readable storage medium.
  • the processor reads and executes the instructions from the computer-readable storage medium. Described computer instructions are used to implement the above resource selection method or resource exclusion method.
  • the "instruction” mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.
  • correlate can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed, configuration and being. Configuration and other relationships.
  • predefined can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices).
  • devices for example, including terminal devices and network devices.
  • predefined can refer to what is defined in the protocol.
  • the "protocol” may refer to a standard protocol in the communication field, which may include, for example, LTE protocol, NR protocol, and related protocols applied in future communication systems. This application is not limited to this.
  • the "plurality” mentioned in this article means two or more than two.
  • “And/or” describes the relationship between related objects, indicating that there can be three relationships.
  • a and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone.
  • the character “/” generally indicates that the related objects are in an "or” relationship.
  • step numbers described in this article only illustrate a possible execution sequence between the steps.
  • the above steps may not be executed in the numbering sequence, such as two different numbers.
  • the steps are executed simultaneously, or two steps with different numbers are executed in the reverse order as shown in the figure, which is not limited in the embodiments of the present application.
  • Computer-readable media includes computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • Storage media can be any available media that can be accessed by a general purpose or special purpose computer.

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Abstract

一种资源选择方法、排除方法、装置、设备及存储介质，涉及通信技术领域。上述方法包括：对第一资源集合进行资源排除后，在第一资源集合中选择传输资源，第一资源集合中的任意一个资源为第一资源，第一资源在时域上对应N个连续的时间单元，N为大于1的整数(710)。在资源排除后得到的候选资源集合中，包括时域上连续的资源，从而保证终端设备在从候选资源集合中选择传输资源时，能够选择时域上连续的资源，支持B2B传输，进而有利于提升COT的利用率以及有利于SL-U用户竞争信道。

Description

资源选择方法、排除方法、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，特别涉及一种资源选择方法、排除方法、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。随着技术的演进，终端设备如何进行资源选择和资源排除还需进一步研究。
发明内容
本申请实施例提供了一种资源选择方法、排除方法、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，提供了一种资源选择方法，所述方法由终端设备执行，所述方法包括：
对第一资源集合进行资源排除后，在所述第一资源集合中选择传输资源，所述第一资源集合中的任意一个资源为第一资源，所述第一资源在时域上对应N个连续的时间单元，N为大于1的整数。
根据本申请实施例的一个方面，提供了一种资源排除方法，所述方法由终端设备执行，所述方法包括：
对第二资源集合进行资源排除后，若所述第二资源集合中满足第一条件的第二资源的数量小于第一阈值，则抬升RSRP(Reference Signal Receiving Power，参考信号接收功率)阈值，初始化所述第二资源集合后重新对所述第二资源集合进行资源排除；其中，所述第一条件包括从所述第二资源所在的时间单元开始连续至少N个时间单元均存在未被排除的第二资源，N为大于1的整数。
根据本申请实施例的一个方面，提供了一种资源选择装置，所述装置包括：
选择模块，用于对第一资源集合进行资源排除后，在所述第一资源集合中选择传输资源，所述第一资源集合中的任意一个资源为第一资源，所述第一资源在时域上对应N个连续的时间单元，N为大于1的整数。
根据本申请实施例的一个方面，提供了一种资源排除装置，所述装置包括：
排除模块，用于对第二资源集合进行资源排除后，若所述第二资源集合中满足第一条件的第二资源的数量小于第一阈值，则抬升参考信号接收功率RSRP阈值，初始化所述第二资源集合后重新对所述第二资源集合进行资源排除；其中，所述第一条件包括从所述第二资源所在的时间单元开始连续至少N个时间单元均存在未被排除的第二资源，N为大于1的整数。
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和存储器，所述存储器中存储有计算机程序，所述处理器执行所述计算机程序以实现上述资源选择方法或资源排除方法。
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，以实现上述资源选择方法或资源排除方法。
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，用于实现上述资源选择方法或资源排除方法。
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，所述计算机程序产品包括计算机指令，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，以实现上述资源选择方法或资源排除方法。
本申请实施例提供的技术方案可以包括如下有益效果：
在资源排除后得到的候选资源集合中，包括时域上连续的资源，从而保证终端设备在从候选资源集合中选择传输资源时，能够选择时域上连续的资源，支持B2B(Back to Back，背靠背)传输，进而有利于提升COT(Channel Occupancy Time，信道占用时间)的利用率以及有利于SL-U用户竞争信道。
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梳齿资源块的示意图；
图6是本申请一个实施例提供的资源块集合划分的示意图；
图7是本申请一个实施例提供的资源选择方法的流程图；
图8是图7实施例对应的一示例性实施例给出的资源选择的示意图；
图9是本申请另一个实施例提供的资源排除方法的流程图；
图10是图9实施例对应的一示例性实施例给出的资源排除的示意图；
图11是本申请一个实施例提供的资源选择装置的框图；
图12是本申请一个实施例提供的资源排除装置的框图；
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(New Radio，新空口)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。
在介绍本申请技术方案之前，先对本申请涉及的一些背景技术知识进行介绍说明。以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合，其均属于本申请实施例的保护范围。本申请实施例包括以下内容中的至少部分内容。
1.SL传输
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)。
2.NR V2X物理层结构
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1st-stage-SCI(即第一阶SCI(Sidelink Control Information，侧行链路控制信息))，PSSCH(Physical Sidelink Shared Channel，物理侧行共享信道)用于承载数据和2nd-stage-SCI(即第二阶SCI)。PSCCH和PSSCH在同一时隙中发送。上述第一阶SCI和第二阶SCI可以是两个具有不同作用的侧行控制信息。例如，第一阶SCI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，还承载第二阶SCI，第二阶SCI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。
3.NR V2X中的资源预留
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(如上文中的第一阶SCI)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{(t 1+100,f 1),(t 2+100,f 2)}，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。当激活TB间的预留时，第一侧行控制信息中包括“Resource reservation period”域。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。在激活TB间的预留时，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。
4.NR V2X侦听的资源选择方法
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10从n+T 1开始，到n+T 2结束。0<＝T 1<＝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。T 2min<＝T 2<＝业务的剩余时延预算，T 2min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T 2min。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T 2min。当T 2min大于等于业务的剩余时延预算时，T 2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-T 0到n-T proc,0进行资源侦听(不包括n-T proc,0)，T 0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。可选地，终端设备在资源侦听窗内属于其所用资源池的时隙中进行资源侦听。可选地，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-T 0到n-T proc,0资源侦听的结果。
Step 1：终端设备将资源选择窗10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20内的未侦听时隙(Step 1-1)和/或资源侦听窗20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：如果终端设备在资源侦听窗20内时隙t m发送数据，没有进行侦听，则终端设备将根据时隙t 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 PCTCN2022106325-appb-000001
(代表向上取整)。Tscal等于T 2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。可选地，与资源R(x,y)对应的一系列周期性资源为R(x,y+j*Ptxlg)，j＝0,1,2,…,Cresel-1。其中Cresel与终端设备生成的随机计数值相关，Ptxlg为Ptx转化为逻辑时隙后的数目。Ptx为终端设备的资源预留周期。例如图4子图(a)中为Cresel为3的情况，表示与资源R(x,y)对应的3个周期性资源(包括R(x,y))。
例如图4中的子图(a)，终端设备在时隙t 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t 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t 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。
可选地，当执行完Step 1-1后，如果资源集合A中剩余资源小于M total*X，则将资源集合A初始化为资源选择窗10内所有属于终端设备所用资源池的可用资源再执行Step 1-2。
Step 1-2：如果终端设备在资源侦听窗20的时隙t 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，且终端设备收到的第一侧行控制信息中包含“Resource reservation period”域，则终端设备将根据时隙t 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t 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 PCTCN2022106325-appb-000002
(代表向上取整)。Tscal等于T 2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。可选地，与资源R(x,y)对应的一系列周期性资源为R(x,y+j*Ptxlg)，j＝0,1,2,…,Cresel-1。其中Cresel与终端设备生成的随机计数值相关，Ptxlg为Ptx转化为逻辑时隙后的数目。Ptx为终端设备的资源预留周期。例如图4子图(b)中为Cresel为3的情况，表示与资源R(x,y)对应的3个周期性资源(包括R(x,y))。
例如图4中的子图(b)，当终端设备收到的第一侧行控制信息中包含“Resource reservation period”域，如果终端设备在时隙t 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t m+Prxlg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t m收到的第一侧行控制信息和假定在时隙t m+Prxlg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，且终端设备收到的第一侧行控制信息中不包含“Resource reservation period”域，则终端设备只判断在时隙t 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)，当终端设备收到的第一侧行控制信息中不包含“Resource reservation period”域，如果终端设备在时隙t 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 PCTCN2022106325-appb-000003
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。
(4)将资源预留周期转化为逻辑时隙：
在上文中提到，终端设备发送第一侧行控制信息指示时频资源，预留接下来将要使用的资源。而进行资源选择的终端设备在侦听时，会解码其他终端设备发送的第一侧行控制信息，获知其他终端设备所预留的资源，在资源选择时排除对应资源，从而避免资源碰撞。进行资源选择的终端设备在进行资源排除时，针对解码的第一侧行控制信息中的“resource reservation period”域指示的物理时间(例如100毫秒)，会将其转化为相应的逻辑时隙数目后，再利用该逻辑时隙的数目进行资源排除：
Figure PCTCN2022106325-appb-000004
上述公式中，Prsvp为资源预留周期，如Prsvp为终端设备侦听到的第一侧行控制信息中“resource reservation period”指示的资源预留周期，或为资源池中允许的资源预留周期，或为终端设备的资源预留周期，P’rsvp为计算出的对应的逻辑时隙数目。T’max为一个SFN(System Frame Number，系统帧号)周期或10240毫秒内属于终端设备的资源池或发送资源池的时隙数目。
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。
5.SL-U(Unlicensed)的物理层结构
当NR SL技术工作在非授权频谱上，系统设计需要考虑相关区域的法规需求，如OCB(Occupied Channel Bandwidth，信道占用带宽)和PSD(Power Spectral Density，功率谱密度)需求。例如，对于5GHz频段范围内的非授权频谱，欧洲的法规需求包括最小信道占用带宽以及最大功率谱密度的需求，对于OCB 的需求，终端设备使用该信道进行数据传输时，所占用的信道带宽不低于总信道带宽的80％；为了满足OCB占用需求，SL-U可以借鉴NR-U中的IRB(Interlaced Resource Block，梳齿资源块)结构。例如，此处的80％的带宽要求，是指传输最低与最高的PRB之间的跨度占总带宽的80％。如果还按照图2频域上连续占用，则得占用总带宽的80％，基本上一个时隙只能传一个用户。使用梳齿结构后，将图2频域连续占用变成离散占用，这样既满足了80％的跨度，也不用真的占80％的带宽。
一个梳齿资源包括频域离散的N个PRB，频带范围内共计包括M个梳齿资源，第m个梳齿包括的PRB为{m,M+m,2M+m,3M+m,……}。
如图5所示：系统带宽包括20个PRB(一个PRB对应12个子载波)，包括5个梳齿(即M＝5)，每个梳齿包括4个PRB(即N＝4)，一个梳齿中相邻两个PRB的频域间隔相同，即相距5个PRB，图中方框内的数字表示梳齿索引。需要说明的是，一个梳齿中包括的PRB又可称为梳齿资源块(Interlaced Resource Block，IRB)，梳齿又可称为IRB。
除了IRB结构外，SL-U中还可能引入RB set(Resource Block set，资源块集合)的概念。
将载波上的频域资源分为若干资源块集合，资源块集合之间可以配置保护频带(简称“保护带”)，也可以不配置保护频带。例如，一个RB set对应20MHz的频域宽度。通信设备在非授权频谱上需要进行LBT(Listen Before Talk，先听后说)，LBT成功后才能发送数据，进行LBT的粒度为一个RB set，因此一个RB set又可以称为一个LBT子带。即如果通信设备在某一个RB set上发送数据，需要在对应的RB set上进行LBT，LBT成功后进行传输。一个RB set包括多个IRB，为了简化，图6中，一个资源块实际对应图5中的一个IRB。一般情况下，为通信设备配置的BWP包括整数个RB Set。
在SL-U中，一种可能的设计是，资源池包含整数个RB set(以及RB set间的保护带)，每个RB set包含多个IRB。进一步地，一种可能是，资源池中的子信道的概念继续使用，即一个子信道定义为一个或多个的IRB，另一种可能是，不使用子信道的概念，终端设备直接在一个或多个IRB上进行传输。
6.LBT的具体分类
Type 1：生成随机计数值，若监听时隙为空闲则减1，若忙碌则不减，减到0为可接入信道进行传输。若计数值减到0，且通信设备无数据进行传输，则当通信设备需要发送数据时，无需从新生成计数值，只需进行一个时长为固定时间长度的LBT，若LBT成功，即该固定长度内信道空闲，则接入信道。
Type 2A：通信设备可以监听25微秒长度(记为Tshort)的信道，如果Tshort内的监听时隙均为空闲，则通信设备可以直接接入信道。
Type 2B：通信设备可以监听16微秒长度的信道(记为Tf)，如果Tf内的监听时隙为空闲，则通信设备可以直接接入信道。
7.B2B(Back to Back，背靠背)传输
根据上文所述，在非授权频谱上，通信设备需要先进行LBT，LBT成功后才可以接入信道。当通信设备LBT成功，接入信道后，其占用信道的时间称为COT(Channel Occupancy Time，信道占用时间)，在COT内，通信设备可以连续传输也可以非连续传输。因此，为了能够更充分地利用LBT成功后发起的COT，在SL-U中可能引入B2B传输的概念。即通信设备连续地在多个时隙上进行传输，提升COT的利用率。同时连续地使用/占用信道也有利于与异系统竞争信道。例如，当SL-U终端采用B2B传输时，由于信道被连续占用，WIFI(Wireless-Fidelity，无线保真)用户无法同时LBT成功接入信道。
根据上文所述，在SL-U系统中可能引入B2B传输的概念，即终端设备在多个连续的时隙上进行传输。因此，如何在进行资源选择时保证终端设备选择时域上连续的传输资源是需要解决的问题，该问题标准还未讨论。具体地，该问题可以在物理层解决，即物理层上报的候选资源集合中的候选资源就是时域上连续的资源，高层仍然随机在候选资源集合中进行资源选择。或者，该问题也可以在高层解决，即物理层上报的候选资源集合中的候选资源可以是时域上离散的或连续的，高层在候选资源集合中选择资源时考虑B2B传输，优先选择时域上连续的资源。为此，本申请针对上述解决方案进行分类讨论，细化相关终端设备行为。下面，将通过几个实施例对本申请技术方案进行介绍说明。
请参考图7，其示出了本申请一个实施例提供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步骤：
步骤710，对第一资源集合进行资源排除后，在第一资源集合中选择传输资源，第一资源集合中的任意一个资源为第一资源，第一资源在时域上对应N个连续的时间单元，N为大于1的整数。
第一资源集合中可以包括至少一个资源，该第一资源集合中的每一个资源均为第一资源，也就是说，该第一资源集合中的每一个资源均在时域上对应多个连续的时间单元。
在本申请实施例中，第一资源在时域上对应2个或者2个以上连续的时间单元。在本申请实施例中提 及的“时间单元”，可以是时隙，也可以是子帧，或者是其他时间单元，本申请对此不作限定。对于本文中其他地方提及的“时间单元”，均可参考此解释，将不作重复赘述。示例性地，第一资源在时域上对应N个连续的时隙，N为大于1的整数。
在一些实施例中，第一资源在时域上对应N个连续的时间单元，是指第一资源在时域上对应N个连续的物理时间单元。以时间单元为时隙为例，第一资源在时域上对应N个连续的物理时隙。
在一些实施例中，第一资源在时域上对应N个连续的时间单元，是指第一资源在时域上对应N个连续的属于资源池的时间单元。属于资源池的时间单元也可以称为逻辑时间单元，即第一资源在时域上对应N个连续的逻辑时间单元。以时间单元为时隙为例，第一资源在时域上对应N个连续的属于资源池的时隙，或者说第一资源在时域上对应N个连续逻辑时隙。
需要说明的是，如果资源池中的时间单元是时域上连续的物理时间单元，那么第一资源在时域上对应的N个连续的属于资源池的时间单元，也是N个连续的物理时间单元；如果资源池中的时间单元是时域上非连续的物理时间单元，那么第一资源在时域上对应的N个连续的属于资源池的时间单元，则有可能是N个非连续的物理时间单元。
另外，上述N可以由网络配置，或预配置，或终端设备的高层配置给物理层，或取决于终端设备的实现，或为标准规定的预设值。可选地，上述N由以下至少之一确定：COT时长、剩余COT时长、信道接入优先级、数据传输的优先级、CBR(Channel Busy Ratio，信道繁忙率)、剩余时延预算。可选地，N包含在资源池配置中。
在一些实施例中，第一资源在频域上对应U个连续的子信道或IRB，每个子信道包括一个或多个连续的IRB，U为正整数。其中，在U等于1时，第一资源在频域上对应1个子信道或IRB；在U大于或等于2时，第一资源在频域上对应U个连续的子信道或IRB。示例性地，U个连续的子信道或IRB位于同一资源块集合中。可选地，上述U可以由网络配置，或预配置，或终端设备的高层配置给物理层，或取决于终端设备的实现，或为标准规定的预设值。
在一些实施例中，终端设备执行如下步骤1～3进行资源排除：
1、确定资源选择窗和资源侦听窗；
在一些实施例中，资源选择窗为[n+T 1，n+T 2]，资源侦听窗为[n-T 0，n-T proc,0)；其中，n为终端设备触发资源选择或重选的时间单元，或者为高层触发物理层上报候选资源集合的时间单元，T 1、T 2、T 0和T proc,0为设定值，具体可参见上文中的介绍说明。
2、确定初始化的第一资源集合，初始化的第一资源集合包括资源选择窗内的至少一个第一资源；
示例性地，将上述第一资源集合记为资源集合A，资源集合A中包括资源选择窗内的资源。在一些实施例中，将资源选择窗内所有的第一资源初始化为资源集合A，即对于资源集合A中的任意一个资源记为第一资源。示例性地，第一资源为R(x,y)，x用于指示第一资源的频域位置，y用于指示第一资源的时域位置。可选地，x用于指示第一资源的频域起始位置，y用于指示第一资源的时域起始位置。示例性地，以时间单元是时隙为例，R(x,y)表示从时隙y开始连续的N个时隙，以及从子信道或IRB x开始的连续U个子信道或IRB对应的时频资源。可选地，记初始化的资源集合A中的第一资源的数目为M total。
3、执行资源排除步骤，对第一资源集合进行资源排除；其中，资源排除步骤包括：第一排除步骤和/或第二排除步骤，第一排除步骤用于根据资源侦听窗内的未侦听时间单元进行资源排除，第二排除步骤用于根据资源侦听窗内侦听到的第一侧行控制信息进行资源排除。
在一些实施例中，第一排除步骤包括：根据未侦听时间单元以及资源池中配置的资源预留周期集合或资源预留周期集合的子集中的每一种资源预留周期，确定未侦听时间单元对应的Q1个时间单元，Q1为正整数；若Q1个时间单元与第一资源集合中的第一资源或该第一资源对应的资源重叠，则从第一资源集合中排除该第一资源。示例性地，上述资源预留周期集合或资源预留周期集合的子集可以由网络配置，或预配置，或取决于终端设备的实现。示例性地，第一资源对应的资源为：与第一资源频域位置相同，且时域位置存在固定时间间隔的周期性资源。可选地，第一资源对应的资源包括第一资源。可选地，该固定时间间隔可以根据终端设备的资源预留周期确定。可选地，终端设备可以不执行该第一排除步骤，即不执行根据资源侦听窗内的未侦听时间单元对资源集合A进行资源排除的步骤。
在一些实施例中，第二排除步骤包括：若第一侧行控制信息指示的资源与第一资源集合中的第一资源或该第一资源对应的资源重叠且满足RSRP阈值条件，则从第一资源集合中排除该第一资源。
在一些实施例中，第二排除步骤包括：根据侦听到第一侧行控制信息的第一时间单元以及第一侧行控制信息中指示的资源预留周期，确定第一时间单元对应的Q2个时间单元，并假定在Q2个时间单元内将收到同样内容的第一侧行控制信息，Q2为正整数；若侦听到的和假定将收到的第一侧行控制信息指示的资源与第一资源集合中的第一资源或该第一资源对应的资源重叠且满足RSRP阈值条件，则从第一资源集合中排除该第一资源。
示例性地，RSRP阈值条件包括：第一侧行控制信息对应的PSCCH的RSRP或该PSCCH调度的PSSCH的RSRP大于RSRP阈值。
在一些实施例中，第一侧行控制信息指示的资源是根据以下指示域中的至少之一确定的资源：
第一指示域，用于指示资源的时域位置；
第二指示域，用于指示资源的频域位置；
第三指示域，用于指示是否为B2B传输；
第四指示域，用于指示为B2B传输中的传输轮次，该传输轮次可以理解为资源在B2B传输中的位置，或B2B传输中的第几次传输，等等。示例性地，第四指示域用于指示该第一侧行控制信息对应的资源，或者说传输该第一侧行控制信息的资源，在B2B传输中的位置或B2B传输中的第几次传输。
在一些实施例中，第一侧行控制信息指示的资源是一个或多个单时间单元的资源。例如，第一侧行控制信息指示的资源是一个或多个单时隙的资源。
在一些实施例中，第一侧行控制信息指示的资源是一个或多个B2B传输组。其中，B2B传输组是指一组连续的单时间单元的资源。例如，B2B传输组是指一组连续的单时隙资源。
在一些实施例中，在执行资源排除步骤，对资源集合A中的第一资源进行排除之后，若资源集合A中剩余的第一资源的数量小于Z*M total，则增加RSRP阈值H dB，初始化资源集合A，再次执行上述资源排除步骤，对资源集合A中的第一资源进行排除；若资源集合A中剩余的第一资源的数量大于或等于Z*M total，则无需对资源集合A再次进行资源排除，即无需对第一资源集合再次进行资源排除(或者说停止对第一资源集合进行资源排除)；其中，M total为初始化的资源集合A中包括的第一资源的总数量，Z和H为设定值。可选地，Z和H由网络配置，或预配置，或取决于终端设备的实现，或为标准规定的预设值。终端设备从资源排除后的资源集合A(或称为候选资源集合)中选择传输资源。可选地，选择传输资源为随机选择。
本实施例提供的技术方案，通过定义资源集合中的资源是在时域上对应多个连续时间单元的资源，这样在对该资源集合进行资源排除后得到的候选资源集合中，也是包括时域上连续的资源，从而保证终端设备在从候选资源集合中选择传输资源时，能够选择时域上连续的资源，支持B2B传输，进而有利于提升COT的利用率以及有利于SL-U用户竞争信道。
示例性地，如图8所示，终端设备确定从n+T 1到n+T 2的资源选择窗10和n-T 0到n-T proc,0的资源侦听窗20(不包括n-T proc,0)，将资源选择窗10内任意一个时域上对应3个时隙，频域上对应一个子信道的资源作为R(x,y)。x表示R(x,y)频域的起始位置，y表示时域的起始位置。图8中的示例R(x,y)频域上对应一个子信道，一个子信道对应1个IRB，该示例中一个IRB中包括3个PRB。
将资源选择窗10内全部的R(x,y)初始化为资源集合A，记初始化的资源集合A中R(x,y)的数量为M total，根据未侦听时隙和/或侦听到的侧行控制信息对资源集合A进行排除。
根据未侦听时隙对资源集合A进行资源排除，如图8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8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8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。若终端设备根据未侦听时隙确定的对应Q个时隙与R(x,y)或与R(x,y)对应的资源重叠，则从资源集合A中排除资源R(x,y)。
根据侦听到的侧行控制信息对资源集合A进行资源排除，如图8中的子图(b)，终端设备在时隙m上侦听到侧行控制信息，该侧行控制信息指示横线阴影标识的资源或者说指示了两个B2B组，若该侧行控制信息指示的资源与资源R(x,y)或与资源R(x,y)对应的资源重叠，且该侧行控制信息对应的PSCCH或该PSCCH调度的PSSCH的RSRP大于RSRP阈值，则从资源集合A中排除资源R(x,y)。
上述R(x,y)对应的资源为与R(x,y)频域位置相同，时域位置存在固定时间间隔的周期性资源。固定时间间隔根据终端设备的资源预留周期确定，且与R(x,y)对应的资源包括资源R(x,y)。例如图8中，为与R(x,y)对应的3个传输资源。
若经资源排除后的资源集合A中R(x,y)的数量小于Z*M total，则初始化资源集合A，抬升RSRP阈值3dB，再次执行基于未侦听时隙和/或基于侦听到的侧行控制信息进行资源排除，直至资源集合A经排除后剩余R(x,y)的数量大于或等于Z*M total。在资源排除后的资源集合A中，随机选择传输资源。
请参考图9，其示出了本申请一个实施例提供的资源排除方法的流程图。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步骤：
步骤910，对第二资源集合进行资源排除后，若第二资源集合中满足第一条件的第二资源的数量小于第一阈值，则抬升RSRP阈值，初始化第二资源集合后重新对第二资源集合进行资源排除；其中，第一条件包括从第二资源所在的时间单元开始连续至少N个时间单元均存在未被排除的第二资源，N为大于1的整数。
在本申请实施例中，第二资源为单时间单元的资源，即第二资源在时域上只对应1个时间单元。在本申请实施例中提及的“时间单元”，可以是时隙，也可以是子帧，或者是其他时间单元，本申请对此不作限定。对于本文中其他地方提及的“时间单元”，均可参考此解释，将不作重复赘述。示例性地，第二资源在时域上只对应1个时隙，第二资源也可称为单时隙资源。
在一些实施例中，若第二资源集合中满足第一条件的第二资源的数量小于第一阈值，且第二资源集合中剩余的第二资源的数量小于第二阈值，则执行抬升RSRP阈值，初始化第二资源集合后重新对第二资源集合进行资源排除。
在一些实施例中，连续至少N个时间单元为至少N个连续的物理时间单元。以时间单元为时隙为例，连续至少N个时间单元为至少N个连续的物理时隙。
在一些实施例中，连续至少N个时间单元为至少N个连续的属于资源池的时间单元。属于资源池的时间单元也可以称为逻辑时间单元，即至少N个连续的逻辑时间单元。以时间单元为时隙为例，连续至少N个时间单元为至少N个连续的属于资源池的时隙，或者说至少N个连续的逻辑时隙。
需要说明的是，如果资源池中的时间单元是时域上连续的物理时间单元，那么至少N个连续的属于资源池的时间单元，也是至少N个连续的物理时间单元；如果资源池中的时间单元是时域上非连续的物理时间单元，那么至少N个连续的属于资源池的时间单元，则有可能是至少N个非连续的物理时间单元。
在一些实施例中，第一条件包括从第二资源所在的时间单元开始连续N个时间单元均存在未被排除的第二资源。可选地，N可以由网络配置，或预配置，或终端设备的高层配置给物理层，或取决于终端设备的实现，或为标准规定的预设值。
在一些实施例中，第二资源在频域上对应U个连续的子信道或梳齿资源块IRB，每个子信道包括一个或多个连续的IRB，U为正整数。其中，在U等于1时，第二资源在频域上对应1个子信道或IRB；在U大于或等于2时，第二资源在频域上对应U个连续的子信道或IRB。示例性地，U个连续的子信道或IRB位于同一资源块集合中。可选地，上述U可以由网络配置，或预配置，或终端设备的高层配置给物理层，或取决于终端设备的实现，或为标准规定的预设值。
在一些实施例中，终端设备执行如下步骤1～3进行资源排除：
1、确定资源选择窗和资源侦听窗；
在一些实施例中，资源选择窗为[n+T 1，n+T 2]，资源侦听窗为[n-T 0，n-T proc,0)；其中，n为终端设备触发资源选择或重选的时间单元，或者为高层触发物理层上报候选资源集合的时间单元，T 1、T 2、T 0和T proc,0为设定值，具体可参见上文中的介绍说明。
2、确定初始化的第二资源集合，初始化的第二资源集合包括资源选择窗内的至少一个第二资源；
示例性地，将上述第二资源集合记为资源集合A，资源集合A中包括资源选择窗内全部的可用资源。示例性地，可用资源为单时间单元的资源，如单时隙的资源。示例性地，可用资源为资源池内的资源。在一些实施例中，将资源选择窗内所有的第二资源初始化为资源集合A，即对于资源集合A中的任意一个资源记为第二资源，第二资源为单时间单元的资源。示例性地，第二资源为R(x,y)，x用于指示第二资源的频域位置，y用于指示第二资源的时域位置。可选地，y用于指示第二资源的时域起始位置。示例性地，R(x,y)表示位于时隙y从子信道或IRB x开始的连续U个子信道或IRB。可选地，记初始化的资源集合A中的第二资源的数目为M total。
3、执行资源排除步骤，对第二资源集合进行资源排除；其中，资源排除步骤包括：第一排除步骤和/或第二排除步骤，第一排除步骤用于根据资源侦听窗内的未侦听时间单元进行资源排除，第二排除步骤用于根据资源侦听窗内侦听到的第一侧行控制信息进行资源排除。
在一些实施例中，第一排除步骤包括：根据未侦听时间单元以及资源池中配置的资源预留周期集合或资源预留周期集合的子集中的每一种资源预留周期，确定未侦听时间单元对应的Q1个时间单元，Q1为正整数；若Q1个时间单元与第二资源集合中的第二资源或该第二资源对应的资源重叠，则从第二资源集合中排除该第二资源。示例性地，上述资源预留周期集合或资源预留周期集合的子集可以由网络配置，或预配置，或取决于终端设备的实现。示例性地，第二资源对应的资源为：与第二资源频域位置相同，且时域位置存在固定时间间隔的周期性资源。可选地，第二资源对应的资源包括第二资源。可选地，该固定时间间隔可以根据终端设备的资源预留周期确定。可选地，终端设备可以不执行该第一排除步骤，即不执行根据资源侦听窗内的未侦听时间单元对资源集合A进行资源排除的步骤。
在一些实施例中，第二排除步骤包括：若第一侧行控制信息指示的资源与第二资源集合中的第二资源 或该第二资源对应的资源重叠且满足RSRP阈值条件，则从第二资源集合中排除该第二资源。
在一些实施例中，第二排除步骤包括：根据侦听到第一侧行控制信息的第一时间单元以及第一侧行控制信息中指示的资源预留周期，确定第一时间单元对应的Q2个时间单元，并假定在Q2个时间单元内将收到同样内容的第一侧行控制信息，Q2为正整数；若侦听到的和假定将收到的第一侧行控制信息指示的资源与第二资源集合中的第二资源或第二资源对应的资源重叠且满足RSRP阈值条件，则从第二资源集合中排除第二资源。
示例性地，RSRP阈值条件包括：第一侧行控制信息对应的PSCCH的RSRP或该PSCCH调度的PSSCH的RSRP大于RSRP阈值。
在一些实施例中，第一侧行控制信息指示的资源是根据以下指示域中的至少之一确定的资源：
第一指示域，用于指示资源的时域位置；
第二指示域，用于指示资源的频域位置；
第三指示域，用于指示是否为B2B传输；
第四指示域，用于指示为B2B传输中的传输轮次，该传输轮次可以理解为资源在B2B传输中的位置，或B2B传输中的第几次传输，等等。示例性地，第四指示域用于指示该第一侧行控制信息对应的资源，或者说传输该第一侧行控制信息的资源，在B2B传输中的位置或B2B传输中的第几次传输。
在一些实施例中，第一侧行控制信息指示的资源是一个或多个单时间单元的资源。例如，第一侧行控制信息指示的资源是一个或多个单时隙的资源。
在一些实施例中，第一侧行控制信息指示的资源是一个或多个B2B传输组。其中，B2B传输组是指一组连续的单时间单元的资源。例如，B2B传输组是指一组连续的单时隙资源。
在一些实施例中，在执行资源排除步骤，对第二资源集合中的第二资源进行排除之后，若经资源排除后的第二资源集合满足如下条件1和/或条件2，则增加RSRP阈值H dB，初始化第二资源集合，再次执行资源排除步骤，对第二资源集合中的第二资源进行排除；若经资源排除后的第二资源集合不满足如下条件1和/或条件2，则将该经资源排除后的第二资源集合确定为最终得到的第二资源集合(或称为候选资源集合)。其中，条件1包括第二资源集合中剩余的第二资源的数量小于第二阈值；条件2包括第二资源集合中满足第一条件的第二资源的数量小于第一阈值，第一条件如上文介绍。
在一些实施例中，在执行资源排除步骤，对第二资源集合中的第二资源进行排除之后，若经资源排除后的第二资源集合满足条件1，则增加RSRP阈值H dB，初始化第二资源集合，再次执行资源排除步骤，对第二资源集合中的第二资源进行排除；若经资源排除后的第二资源集合不满足条件1，则将该经资源排除后的第二资源集合确定为最终得到的第二资源集合。条件1如上所述。
在一些实施例中，在执行资源排除步骤，对第二资源集合中的第二资源进行排除之后，若经资源排除后的第二资源集合满足条件2，则增加RSRP阈值H dB，初始化第二资源集合，再次执行资源排除步骤，对第二资源集合中的第二资源进行排除；若经资源排除后的第二资源集合不满足条件2，则将该经资源排除后的第二资源集合确定为最终得到的第二资源集合。条件2如上所述。
在一些实施例中，在执行资源排除步骤，对第二资源集合中的第二资源进行排除之后，若经资源排除后的第二资源集合满足条件1和条件2中的至少之一，则增加RSRP阈值H dB，初始化第二资源集合，再次执行资源排除步骤，对第二资源集合中的第二资源进行排除；若经资源排除后的第二资源集合不满足条件1且不满足条件2，则将该经资源排除后的第二资源集合确定为最终得到的第二资源集合。条件1、条件2如上所述。在此实施例中，只要第二资源集合满足条件1和条件2中的至少之一，就重新初始化再次执行资源排除步骤，使得最终得到的第二资源集合中既有足够的资源，又有足够多的连续的资源。
示例性地，以时间单元为时隙为例，上述第一条件为从资源R(x,y)所在时隙开始在同一资源块集合内连续至少N个时隙均存在未被排除或剩余的R(x,y)。示例性地，上述第一条件为从资源R(x,y)所在时隙开始在同一资源块集合内连续N个时隙均存在未被排除或剩余的R(x,y)。可选地，上述连续至少N个(或连续N个)时间单元内的第二资源位于同一资源块集合。可选地，上述连续至少N个(或连续N个)时间单元内的第二资源的频域位置相同或不同。示例性地，所述连续至少N个(或连续N个)时隙内的R(x,y)的频域位置相同。示例性地，所述连续至少N个(或连续N个)时隙内的R(x,y)的频域位置不同。
可选地，上述第一阈值可以由网络配置，或预配置，或由终端设备的高层配置给物理层，或取决于终端设备的实现，或为标准规定的预设值。可选地，第一阈值根据以下至少之一确定：COT时长、剩余COT时长、信道接入优先级、数据传输的优先级、CBR、剩余时延预算。示例性地，第一阈值为Z*M total，Z可以由网络配置，或预配置，或由终端设备的高层配置给物理层，或取决于终端设备的实现，或为标准规定的预设值。
可选地，上述第二阈值可以由网络配置，或预配置，或由终端设备的高层配置给物理层，或取决于终端设备的实现，或为标准规定的预设值。示例性地，第二阈值为X*M total，X可以由网络配置，或预配置， 或由终端设备的高层配置给物理层，或取决于终端设备的实现，或为标准规定的预设值。
可选地，将经资源排除后的第二资源集合记为候选资源集合，终端设备从该候选资源集合中选择传输资源。可选地，终端设备从该候选资源集合中，优先选择时域上连续的资源作为传输资源。
本实施例提供的技术方案，通过在资源排除时，保证经资源排除后得到的候选资源集合中，存在一定数量的时域上连续的资源，从而保证终端设备在从候选资源集合中选择传输资源时，能够选择时域上连续的资源，支持B2B传输，进而有利于提升COT的利用率以及有利于SL-U用户竞争信道。
示例性地，如图10所示，图10中一个子信道对应一个IRB(即图中频域上0、1、2、3、4中的每一个标号代表一个IRB)，假设R(x,y)为时隙y内频域上从子信道x开始2个连续的子信道对应的资源(即上述U＝2)，例如R(0,0)表示时隙0内子信道0和1对应的资源，R(0,1)表示时隙1内子信道0和1对应的资源，将资源集合A初始化为时隙0-11内全部的R(x,y)，初始化的资源集合A中R(x,y)的总数为M total。针对资源集合A进行基于未侦听时隙和/或基于侦听到的侧行控制信息的资源排除，排除后剩余的资源如图10所示，包括R(1,1)，R(0,2)，R(1,2)，R(2,2)…R(2,6)，R(3,6)，R(2,7)，…，R(1,11)。
假设高层配置给物理层的N为2，且高层配置给物理层参数Z，第一阈值为Z*M total。
若经资源排除后的资源集合A满足条件1和条件2中的至少之一，则增加RSRP阈值3dB，初始化资源集合A，再次对资源集合A进行上述资源排除。
条件1：资源集合A中剩余的R(x,y)的数量小于X*M total。
条件2：资源集合A中满足第一条件的剩余R(x,y)的数目小于Z*M total。
假设所述第一条件为从所述R(x,y)所在时隙开始连续N个时隙均存在未被排除或剩余的R(x,y)，且所述N个时隙内存在的剩余R(x,y)的频域位置相同。则图10中满足条件的剩余R(x,y)包括R(1,1)，R(0,2)，R(1,2)，R(2,2)，R(2,6)，R(3,6)，R(2,7)，R(3,7)，R(0,8)，R(1,8)，R(0,9)。
假设所述第一条件为从所述R(x,y)所在时隙开始连续N个时隙均存在未被排除或剩余的R(x,y)，且所述N个时隙内存在的剩余R(x,y)的频域位置可以相同也可以不同。则图10中满足条件的剩余R(x,y)包括R(1,1)，R(0,2)，R(1,2)，R(2,2)，R(2,6)，R(3,6)，R(2,7)，R(3,7)，R(0,8)，R(1,8)，R(2,8)，R(3,8)，R(0,9)，R(1,9)，R(0,10)，R(3,10)，R(1,11)。
终端设备将资源排除后的资源集合A上报给高层，高层在所述资源集合A中进行资源选择。
在一些实施例中，终端设备初始化资源集合A为资源选择窗内全部的可用资源，终端设备针对资源集合A进行基于未侦听时间单元和/或基于侦听到的侧行控制信息的资源排除，具体步骤可参照上文介绍。终端设备在资源排除后的资源集合A(或称为候选资源集合)中选择传输资源。
终端设备在从候选资源集合中选择传输资源时，优先选择时域上连续的时频资源作为传输资源。示例性地，终端设备随机从资源集合A中选择传输资源时优先选择时域上连续的时频资源。示例性地，终端设备选择TB 1的初传和重传时，使得TB 1的初传和重传占用连续的时隙。示例性地，当终端设备针对TB 2已经确定了传输资源，在选择TB 1的传输资源时，使得TB 1和TB 2的传输资源占用连续的时隙。可选地，所述连续的时隙为连续的物理时隙。可选地，所述连续的时隙为资源池内连续的时隙。另外，TB 1和TB 2是两个不同的传输块。
例如，终端设备的物理层向高层上报的候选资源集合包括R(1,1)，R(0,2)，R(1,2)，R(2,2)，R(2,6)，R(3,6)，R(2,7)，R(3,7)，R(0,8)，R(1,8)，R(0,9)。TB 1对应三次传输，即初传一次，重传两次，则终端设备的高层选择资源R(2,6)，R(2,7)和R(0,8)用于TB 1的传输。
又例如，终端设备的物理层向高层上报的候选资源集合包括R(1,1)，R(0,2)，R(1,2)，R(2,2)，R(2,6)，R(3,6)，R(2,7)，R(3,7)，R(0,8)，R(1,8)，R(0,9)。终端设备确定的TB2的传输资源位于时隙1、6和8。TB1对应三次传输，即初传一次，重传两次，则终端设备选择资源R(1,2)，R(2,7)和R(0,9)用于TB 1的传输。
本实施例提供的技术方案，通过在从经资源排除得到的候选资源集合中选择传输资源时，优先选择时域上连续的资源，从而支持B2B传输，进而有利于提升COT的利用率以及有利于SL-U用户竞争信道。
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资源选择装置的框图。该装置具有实现上述资源选择方法示例的功能，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，也可以设置在终端设备中。如图11所示，该装置1100可以包括：选择模块1110。
所述选择模块1110，用于对第一资源集合进行资源排除后，在所述第一资源集合中选择传输资源，所述第一资源集合中的任意一个资源为第一资源，所述第一资源在时域上对应N个连续的时间单元，N为大 于1的整数。
在一些实施例中，所述第一资源在时域上对应N个连续的时间单元，包括：
所述第一资源在时域上对应N个连续的物理时间单元；
或者，
所述第一资源在时域上对应N个连续的属于资源池的时间单元。
在一些实施例中，所述第一资源在频域上对应U个连续的子信道或IRB，每个所述子信道包括一个或多个连续的IRB，U为正整数。
在一些实施例中，所述U个连续的子信道或IRB位于同一资源块集合中。
在一些实施例中，如图11所示，所述装置1100还包括排除模块1120，用于：
确定资源选择窗和资源侦听窗；
确定初始化的第一资源集合，所述初始化的第一资源集合包括所述资源选择窗内的至少一个所述第一资源；
执行资源排除步骤，对所述第一资源集合进行资源排除；其中，所述资源排除步骤包括：第一排除步骤和/或第二排除步骤，所述第一排除步骤用于根据所述资源侦听窗内的未侦听时间单元进行资源排除，所述第二排除步骤用于根据所述资源侦听窗内侦听到的第一侧行控制信息进行资源排除。
在一些实施例中，所述第一排除步骤包括：
根据所述未侦听时间单元以及资源池中配置的资源预留周期集合或所述资源预留周期集合的子集中的每一种资源预留周期，确定所述未侦听时间单元对应的Q1个时间单元，Q1为正整数；
若所述Q1个时间单元与所述第一资源集合中的第一资源或所述第一资源对应的资源重叠，则从所述第一资源集合中排除所述第一资源。
在一些实施例中，所述第二排除步骤包括：
若所述第一侧行控制信息指示的资源与所述第一资源集合中的第一资源或所述第一资源对应的资源重叠且满足RSRP阈值条件，则从所述第一资源集合中排除所述第一资源；
或者，
根据侦听到所述第一侧行控制信息的第一时间单元以及所述第一侧行控制信息中指示的资源预留周期，确定所述第一时间单元对应的Q2个时间单元，并假定在所述Q2个时间单元内将收到同样内容的所述第一侧行控制信息，Q2为正整数；若侦听到的和假定将收到的所述第一侧行控制信息指示的资源与所述第一资源集合中的第一资源或所述第一资源对应的资源重叠且满足RSRP阈值条件，则从所述第一资源集合中排除所述第一资源。
在一些实施例中，所述第一侧行控制信息指示的资源是根据以下指示域中的至少之一确定的资源：
第一指示域，用于指示资源的时域位置；
第二指示域，用于指示资源的频域位置；
第三指示域，用于指示是否为B2B传输；
第四指示域，用于指示为B2B传输中的传输轮次。
在一些实施例中，所述第一侧行控制信息指示的资源是一个或多个单时间单元的资源；或者，所述第一侧行控制信息指示的资源是一个或多个B2B传输组。
在一些实施例中，所述第一资源对应的资源为：与所述第一资源频域位置相同，且时域位置存在固定时间间隔的周期性资源。
在一些实施例中，所述N由以下至少之一确定：COT时长、剩余COT时长、信道接入优先级、数据传输的优先级、CBR、剩余时延预算。
请参考图12，其示出了本申请一个实施例提供的资源排除装置的框图。该装置具有实现上述资源排除方法示例的功能，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，也可以设置在终端设备中。如图12所示，该装置1200可以包括：排除模块1210。
所述排除模块1210，用于对第二资源集合进行资源排除后，若所述第二资源集合中满足第一条件的第二资源的数量小于第一阈值，则抬升参考信号接收功率RSRP阈值，初始化所述第二资源集合后重新对所述第二资源集合进行资源排除；其中，所述第一条件包括从所述第二资源所在的时间单元开始连续至少N个时间单元均存在未被排除的第二资源，N为大于1的整数。
在一些实施例中，所述第二资源为单时间单元的资源。
在一些实施例中，所述第二资源在频域上对应U个连续的子信道或IRB，每个所述子信道包括一个或多个连续的IRB，U为正整数。
在一些实施例中，所述U个连续的子信道或IRB位于同一资源块集合中。
在一些实施例中，所述排除模块1210，还用于若所述第二资源集合中满足所述第一条件的第二资源的数量小于所述第一阈值，且所述第二资源集合中剩余的第二资源的数量小于第二阈值，则执行所述抬升RSRP阈值，初始化所述第二资源集合后重新对所述第二资源集合进行资源排除的步骤。
在一些实施例中，所述连续至少N个时间单元为：至少N个连续的物理时间单元；或者，至少N个连续的属于资源池的时间单元。
在一些实施例中，所述排除模块1210，还用于：
确定资源选择窗和资源侦听窗；
确定初始化的第二资源集合，所述初始化的第二资源集合包括所述资源选择窗内的至少一个所述第二资源；
执行资源排除步骤，对所述第二资源集合进行资源排除；其中，所述资源排除步骤包括：第一排除步骤和/或第二排除步骤，所述第一排除步骤用于根据所述资源侦听窗内的未侦听时间单元进行资源排除，所述第二排除步骤用于根据所述资源侦听窗内侦听到的第一侧行控制信息进行资源排除。
在一些实施例中，所述第一排除步骤包括：
根据所述未侦听时间单元以及资源池中配置的资源预留周期集合或所述资源预留周期集合的子集中的每一种资源预留周期，确定所述未侦听时间单元对应的Q1个时间单元，Q1为正整数；
若所述Q1个时间单元与所述第二资源集合中的第二资源或所述第二资源对应的资源重叠，则从所述第二资源集合中排除所述第二资源。
在一些实施例中，所述第二排除步骤包括：
若所述第一侧行控制信息指示的资源与所述第二资源集合中的第二资源或所述第二资源对应的资源重叠且满足RSRP阈值条件，则从所述第二资源集合中排除所述第二资源；
或者，
根据侦听到所述第一侧行控制信息的第一时间单元以及所述第一侧行控制信息中指示的资源预留周期，确定所述第一时间单元对应的Q2个时间单元，并假定在所述Q2个时间单元内将收到同样内容的所述第一侧行控制信息，Q2为正整数；若侦听到的和假定将收到的所述第一侧行控制信息指示的资源与所述第二资源集合中的第二资源或所述第二资源对应的资源重叠且满足RSRP阈值条件，则从所述第二资源集合中排除所述第二资源。
在一些实施例中，所述第一侧行控制信息指示的资源是根据以下指示域中的至少之一确定的资源：
第一指示域，用于指示资源的时域位置；
第二指示域，用于指示资源的频域位置；
第三指示域，用于指示是否为B2B传输；
第四指示域，用于指示为B2B传输中的传输轮次。
在一些实施例中，所述第一侧行控制信息指示的资源是一个或多个单时间单元的传输资源；或者，所述第一侧行控制信息指示的资源是一个或多个B2B传输组。
在一些实施例中，所述第二资源对应的资源为：与所述第二资源频域位置相同，且时域位置存在固定时间间隔的周期性资源。
在一些实施例中，所述第一阈值根据以下至少之一确定：COT时长、剩余COT时长、信道接入优先级、数据传输的优先级、CBR、剩余时延预算。
需要说明的是，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。有关装置实施例中未详细说明的细节，可参考上述方法实施例。
请参考图13，其示出了本申请一个实施例提供的终端设备的结构示意图。该终端设备1300可以包括：处理器1301、收发器1302以及存储器1303。
处理器1301包括一个或者一个以上处理核心，处理器1301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。
收发器1302可以包括接收器和发射器，比如，该接收器和发射器可以实现为同一个无线通信组件，该无线通信组件可以包括一块无线通信芯片以及射频天线。
存储器1303可以与处理器1301以及收发器1302相连。
存储器1303可用于存储处理器执行的计算机程序，处理器1301用于执行该计算机程序，以实现上述 方法实施例中的各个步骤。
在一示例性实施例中，处理器1301用于对第一资源集合进行资源排除后，在所述第一资源集合中选择传输资源，所述第一资源集合中的任意一个资源为第一资源，所述第一资源在时域上对应N个连续的时间单元，N为大于1的整数。
在另一示例性实施例中，处理器1301用于对第二资源集合进行资源排除后，若所述第二资源集合中满足第一条件的第二资源的数量小于第一阈值，则抬升参考信号接收功率RSRP阈值，初始化所述第二资源集合后重新对所述第二资源集合进行资源排除；其中，所述第一条件包括从所述第二资源所在的时间单元开始连续至少N个时间单元均存在未被排除的第二资源，N为大于1的整数。
对于本实施例中未详细说明的细节，可参见上文实施例，此处不再一一赘述。
此外，存储器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：磁盘或光盘，电可擦除可编程只读存储器，可擦除可编程只读存储器，静态随时存取存储器，只读存储器，磁存储器，快闪存储器，可编程只读存储器。
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处理器执行，以实现上述资源选择方法或资源排除方法。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，当所述芯片运行时，用于实现上述资源选择方法或资源排除方法。
本申请实施例还提供了一种计算机程序产品，所述计算机程序产品包括计算机指令，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，以实现上述资源选择方法或资源排除方法。
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。
在本申请一些实施例中，“预定义的”可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不作限定。比如预定义的可以是指协议中定义的。
在本申请一些实施例中，所述“协议”可以指通信领域的标准协议，例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议，本申请对此不作限定。
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。
在本文中提及的“大于或等于”可表示大于等于或大于，“小于或等于”可表示小于等于或小于。
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 (52)

  1. 一种资源选择方法，其特征在于，所述方法由终端设备执行，所述方法包括：
    对第一资源集合进行资源排除后，在所述第一资源集合中选择传输资源，所述第一资源集合中的任意一个资源为第一资源，所述第一资源在时域上对应N个连续的时间单元，N为大于1的整数。
  2. 根据权利要求1所述的方法，其特征在于，所述第一资源在时域上对应N个连续的时间单元，包括：
    所述第一资源在时域上对应N个连续的物理时间单元；
    或者，
    所述第一资源在时域上对应N个连续的属于资源池的时间单元。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一资源在频域上对应U个连续的子信道或梳齿资源块IRB，每个所述子信道包括一个或多个连续的IRB，U为正整数。
  4. 根据权利要求3所述的方法，其特征在于，所述U个连续的子信道或IRB位于同一资源块集合中。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，所述方法还包括：
    确定资源选择窗和资源侦听窗；
    确定初始化的第一资源集合，所述初始化的第一资源集合包括所述资源选择窗内的至少一个所述第一资源；
    执行资源排除步骤，对所述第一资源集合进行资源排除；其中，所述资源排除步骤包括：第一排除步骤和/或第二排除步骤，所述第一排除步骤用于根据所述资源侦听窗内的未侦听时间单元进行资源排除，所述第二排除步骤用于根据所述资源侦听窗内侦听到的第一侧行控制信息进行资源排除。
  6. 根据权利要求5所述的方法，其特征在于，所述第一排除步骤包括：
    根据所述未侦听时间单元以及资源池中配置的资源预留周期集合或所述资源预留周期集合的子集中的每一种资源预留周期，确定所述未侦听时间单元对应的Q1个时间单元，Q1为正整数；
    若所述Q1个时间单元与所述第一资源集合中的第一资源或所述第一资源对应的资源重叠，则从所述第一资源集合中排除所述第一资源。
  7. 根据权利要求5或6所述的方法，其特征在于，所述第二排除步骤包括：
    若所述第一侧行控制信息指示的资源与所述第一资源集合中的第一资源或所述第一资源对应的资源重叠且满足参考信号接收功率RSRP阈值条件，则从所述第一资源集合中排除所述第一资源；
    或者，
    根据侦听到所述第一侧行控制信息的第一时间单元以及所述第一侧行控制信息中指示的资源预留周期，确定所述第一时间单元对应的Q2个时间单元，并假定在所述Q2个时间单元内将收到同样内容的所述第一侧行控制信息，Q2为正整数；若侦听到的和假定将收到的所述第一侧行控制信息指示的资源与所述第一资源集合中的第一资源或所述第一资源对应的资源重叠且满足RSRP阈值条件，则从所述第一资源集合中排除所述第一资源。
  8. 根据权利要求7所述的方法，其特征在于，所述第一侧行控制信息指示的资源是根据以下指示域中的至少之一确定的资源：
    第一指示域，用于指示资源的时域位置；
    第二指示域，用于指示资源的频域位置；
    第三指示域，用于指示是否为背靠背B2B传输；
    第四指示域，用于指示为B2B传输中的传输轮次。
  9. 根据权利要求7或8所述的方法，其特征在于，
    所述第一侧行控制信息指示的资源是一个或多个单时间单元的资源；
    或者，
    所述第一侧行控制信息指示的资源是一个或多个B2B传输组。
  10. 根据权利要求6至9任一项所述的方法，其特征在于，所述第一资源对应的资源为：与所述第一资源频域位置相同，且时域位置存在固定时间间隔的周期性资源。
  11. 根据权利要求1至10任一项所述的方法，其特征在于，所述N由以下至少之一确定：信道占用时间COT时长、剩余COT时长、信道接入优先级、数据传输的优先级、信道繁忙率CBR、剩余时延预算。
  12. 一种资源排除方法，其特征在于，所述方法由终端设备执行，所述方法包括：
    对第二资源集合进行资源排除后，若所述第二资源集合中满足第一条件的第二资源的数量小于第一阈值，则抬升参考信号接收功率RSRP阈值，初始化所述第二资源集合后重新对所述第二资源集合进行资源排除；其中，所述第一条件包括从所述第二资源所在的时间单元开始连续至少N个时间单元均存在未被排 除的第二资源，N为大于1的整数。
  13. 根据权利要求12所述的方法，其特征在于，所述第二资源为单时间单元的资源。
  14. 根据权利要求12或13所述的方法，其特征在于，所述第二资源在频域上对应U个连续的子信道或梳齿资源块IRB，每个所述子信道包括一个或多个连续的IRB，U为正整数。
  15. 根据权利要求14所述的方法，其特征在于，所述U个连续的子信道或IRB位于同一资源块集合中。
  16. 根据权利要求12至15任一项所述的方法，其特征在于，所述方法还包括：
    若所述第二资源集合中满足所述第一条件的第二资源的数量小于所述第一阈值，且所述第二资源集合中剩余的第二资源的数量小于第二阈值，则执行所述抬升RSRP阈值，初始化所述第二资源集合后重新对所述第二资源集合进行资源排除的步骤。
  17. 根据权利要求12至16任一项所述的方法，其特征在于，所述连续至少N个时间单元为：
    至少N个连续的物理时间单元；
    或者，
    至少N个连续的属于资源池的时间单元。
  18. 根据权利要求12至17任一项所述的方法，其特征在于，所述方法还包括：
    确定资源选择窗和资源侦听窗；
    确定初始化的第二资源集合，所述初始化的第二资源集合包括所述资源选择窗内的至少一个所述第二资源；
    执行资源排除步骤，对所述第二资源集合进行资源排除；其中，所述资源排除步骤包括：第一排除步骤和/或第二排除步骤，所述第一排除步骤用于根据所述资源侦听窗内的未侦听时间单元进行资源排除，所述第二排除步骤用于根据所述资源侦听窗内侦听到的第一侧行控制信息进行资源排除。
  19. 根据权利要求18所述的方法，其特征在于，所述第一排除步骤包括：
    根据所述未侦听时间单元以及资源池中配置的资源预留周期集合或所述资源预留周期集合的子集中的每一种资源预留周期，确定所述未侦听时间单元对应的Q1个时间单元，Q1为正整数；
    若所述Q1个时间单元与所述第二资源集合中的第二资源或所述第二资源对应的资源重叠，则从所述第二资源集合中排除所述第二资源。
  20. 根据权利要求18或19所述的方法，其特征在于，所述第二排除步骤包括：
    若所述第一侧行控制信息指示的资源与所述第二资源集合中的第二资源或所述第二资源对应的资源重叠且满足RSRP阈值条件，则从所述第二资源集合中排除所述第二资源；
    或者，
    根据侦听到所述第一侧行控制信息的第一时间单元以及所述第一侧行控制信息中指示的资源预留周期，确定所述第一时间单元对应的Q2个时间单元，并假定在所述Q2个时间单元内将收到同样内容的所述第一侧行控制信息，Q2为正整数；若侦听到的和假定将收到的所述第一侧行控制信息指示的资源与所述第二资源集合中的第二资源或所述第二资源对应的资源重叠且满足RSRP阈值条件，则从所述第二资源集合中排除所述第二资源。
  21. 根据权利要求20所述的方法，其特征在于，所述第一侧行控制信息指示的资源是根据以下指示域中的至少之一确定的资源：
    第一指示域，用于指示资源的时域位置；
    第二指示域，用于指示资源的频域位置；
    第三指示域，用于指示是否为背靠背B2B传输；
    第四指示域，用于指示为B2B传输中的传输轮次。
  22. 根据权利要求20或21所述的方法，其特征在于，
    所述第一侧行控制信息指示的资源是一个或多个单时间单元的传输资源；
    或者，
    所述第一侧行控制信息指示的资源是一个或多个B2B传输组。
  23. 根据权利要求19至22任一项所述的方法，其特征在于，所述第二资源对应的资源为：与所述第二资源频域位置相同，且时域位置存在固定时间间隔的周期性资源。
  24. 根据权利要求12至23任一项所述的方法，其特征在于，所述第一阈值根据以下至少之一确定：信道占用时间COT时长、剩余COT时长、信道接入优先级、数据传输的优先级、信道繁忙率CBR、剩余时延预算。
  25. 一种资源选择装置，其特征在于，所述装置包括：
    选择模块，用于对第一资源集合进行资源排除后，在所述第一资源集合中选择传输资源，所述第一资 源集合中的任意一个资源为第一资源，所述第一资源在时域上对应N个连续的时间单元，N为大于1的整数。
  26. 根据权利要求25所述的装置，其特征在于，所述第一资源在时域上对应N个连续的时间单元，包括：
    所述第一资源在时域上对应N个连续的物理时间单元；
    或者，
    所述第一资源在时域上对应N个连续的属于资源池的时间单元。
  27. 根据权利要求25或26所述的装置，其特征在于，所述第一资源在频域上对应U个连续的子信道或梳齿资源块IRB，每个所述子信道包括一个或多个连续的IRB，U为正整数。
  28. 根据权利要求27所述的装置，其特征在于，所述U个连续的子信道或IRB位于同一资源块集合中。
  29. 根据权利要求25至28任一项所述的装置，其特征在于，所述装置还包括排除模块，用于：
    确定资源选择窗和资源侦听窗；
    确定初始化的第一资源集合，所述初始化的第一资源集合包括所述资源选择窗内的至少一个所述第一资源；
    执行资源排除步骤，对所述第一资源集合进行资源排除；其中，所述资源排除步骤包括：第一排除步骤和/或第二排除步骤，所述第一排除步骤用于根据所述资源侦听窗内的未侦听时间单元进行资源排除，所述第二排除步骤用于根据所述资源侦听窗内侦听到的第一侧行控制信息进行资源排除。
  30. 根据权利要求29所述的装置，其特征在于，所述第一排除步骤包括：
    根据所述未侦听时间单元以及资源池中配置的资源预留周期集合或所述资源预留周期集合的子集中的每一种资源预留周期，确定所述未侦听时间单元对应的Q1个时间单元，Q1为正整数；
    若所述Q1个时间单元与所述第一资源集合中的第一资源或所述第一资源对应的资源重叠，则从所述第一资源集合中排除所述第一资源。
  31. 根据权利要求29或30所述的装置，其特征在于，所述第二排除步骤包括：
    若所述第一侧行控制信息指示的资源与所述第一资源集合中的第一资源或所述第一资源对应的资源重叠且满足参考信号接收功率RSRP阈值条件，则从所述第一资源集合中排除所述第一资源；
    或者，
    根据侦听到所述第一侧行控制信息的第一时间单元以及所述第一侧行控制信息中指示的资源预留周期，确定所述第一时间单元对应的Q2个时间单元，并假定在所述Q2个时间单元内将收到同样内容的所述第一侧行控制信息，Q2为正整数；若侦听到的和假定将收到的所述第一侧行控制信息指示的资源与所述第一资源集合中的第一资源或所述第一资源对应的资源重叠且满足RSRP阈值条件，则从所述第一资源集合中排除所述第一资源。
  32. 根据权利要求31所述的装置，其特征在于，所述第一侧行控制信息指示的资源是根据以下指示域中的至少之一确定的资源：
    第一指示域，用于指示资源的时域位置；
    第二指示域，用于指示资源的频域位置；
    第三指示域，用于指示是否为背靠背B2B传输；
    第四指示域，用于指示为B2B传输中的传输轮次。
  33. 根据权利要求31或32所述的装置，其特征在于，
    所述第一侧行控制信息指示的资源是一个或多个单时间单元的资源；
    或者，
    所述第一侧行控制信息指示的资源是一个或多个B2B传输组。
  34. 根据权利要求30至33任一项所述的装置，其特征在于，所述第一资源对应的资源为：与所述第一资源频域位置相同，且时域位置存在固定时间间隔的周期性资源。
  35. 根据权利要求25至34任一项所述的装置，其特征在于，所述N由以下至少之一确定：信道占用时间COT时长、剩余COT时长、信道接入优先级、数据传输的优先级、信道繁忙率CBR、剩余时延预算。
  36. 一种资源排除装置，其特征在于，所述装置包括：
    排除模块，用于对第二资源集合进行资源排除后，若所述第二资源集合中满足第一条件的第二资源的数量小于第一阈值，则抬升参考信号接收功率RSRP阈值，初始化所述第二资源集合后重新对所述第二资源集合进行资源排除；其中，所述第一条件包括从所述第二资源所在的时间单元开始连续至少N个时间单元均存在未被排除的第二资源，N为大于1的整数。
  37. 根据权利要求36所述的装置，其特征在于，所述第二资源为单时间单元的资源。
  38. 根据权利要求36或37所述的装置，其特征在于，所述第二资源在频域上对应U个连续的子信道或梳齿资源块IRB，每个所述子信道包括一个或多个连续的IRB，U为正整数。
  39. 根据权利要求38所述的装置，其特征在于，所述U个连续的子信道或IRB位于同一资源块集合中。
  40. 根据权利要求36至39任一项所述的装置，其特征在于，
    所述排除模块，还用于若所述第二资源集合中满足所述第一条件的第二资源的数量小于所述第一阈值，且所述第二资源集合中剩余的第二资源的数量小于第二阈值，则执行所述抬升RSRP阈值，初始化所述第二资源集合后重新对所述第二资源集合进行资源排除的步骤。
  41. 根据权利要求36至40任一项所述的装置，其特征在于，所述连续至少N个时间单元为：
    至少N个连续的物理时间单元；
    或者，
    至少N个连续的属于资源池的时间单元。
  42. 根据权利要求36至41任一项所述的装置，其特征在于，所述排除模块，还用于：
    确定资源选择窗和资源侦听窗；
    确定初始化的第二资源集合，所述初始化的第二资源集合包括所述资源选择窗内的至少一个所述第二资源；
    执行资源排除步骤，对所述第二资源集合进行资源排除；其中，所述资源排除步骤包括：第一排除步骤和/或第二排除步骤，所述第一排除步骤用于根据所述资源侦听窗内的未侦听时间单元进行资源排除，所述第二排除步骤用于根据所述资源侦听窗内侦听到的第一侧行控制信息进行资源排除。
  43. 根据权利要求42所述的装置，其特征在于，所述第一排除步骤包括：
    根据所述未侦听时间单元以及资源池中配置的资源预留周期集合或所述资源预留周期集合的子集中的每一种资源预留周期，确定所述未侦听时间单元对应的Q1个时间单元，Q1为正整数；
    若所述Q1个时间单元与所述第二资源集合中的第二资源或所述第二资源对应的资源重叠，则从所述第二资源集合中排除所述第二资源。
  44. 根据权利要求42或43所述的装置，其特征在于，所述第二排除步骤包括：
    若所述第一侧行控制信息指示的资源与所述第二资源集合中的第二资源或所述第二资源对应的资源重叠且满足RSRP阈值条件，则从所述第二资源集合中排除所述第二资源；
    或者，
    根据侦听到所述第一侧行控制信息的第一时间单元以及所述第一侧行控制信息中指示的资源预留周期，确定所述第一时间单元对应的Q2个时间单元，并假定在所述Q2个时间单元内将收到同样内容的所述第一侧行控制信息，Q2为正整数；若侦听到的和假定将收到的所述第一侧行控制信息指示的资源与所述第二资源集合中的第二资源或所述第二资源对应的资源重叠且满足RSRP阈值条件，则从所述第二资源集合中排除所述第二资源。
  45. 根据权利要求44所述的装置，其特征在于，所述第一侧行控制信息指示的资源是根据以下指示域中的至少之一确定的资源：
    第一指示域，用于指示资源的时域位置；
    第二指示域，用于指示资源的频域位置；
    第三指示域，用于指示是否为背靠背B2B传输；
    第四指示域，用于指示为B2B传输中的传输轮次。
  46. 根据权利要求44或45所述的装置，其特征在于，
    所述第一侧行控制信息指示的资源是一个或多个单时间单元的传输资源；
    或者，
    所述第一侧行控制信息指示的资源是一个或多个B2B传输组。
  47. 根据权利要求43至46任一项所述的装置，其特征在于，所述第二资源对应的资源为：与所述第二资源频域位置相同，且时域位置存在固定时间间隔的周期性资源。
  48. 根据权利要求36至47任一项所述的装置，其特征在于，所述第一阈值根据以下至少之一确定：信道占用时间COT时长、剩余COT时长、信道接入优先级、数据传输的优先级、信道繁忙率CBR、剩余时延预算。
  49. 一种终端设备，其特征在于，所述终端设备包括处理器和存储器，所述存储器中存储有计算机程序，所述处理器执行所述计算机程序以实现如权利要求1至24任一项所述的方法。
  50. 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24任一项所述的方法。
  51. 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24任一项所述的方法。
  52. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机指令，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24任一项所述的方法。
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