WO2023226040A1 - 资源排除方法、装置、设备、存储介质及程序产品 - Google Patents

资源排除方法、装置、设备、存储介质及程序产品 Download PDF

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Publication number
WO2023226040A1
WO2023226040A1 PCT/CN2022/095761 CN2022095761W WO2023226040A1 WO 2023226040 A1 WO2023226040 A1 WO 2023226040A1 CN 2022095761 W CN2022095761 W CN 2022095761W WO 2023226040 A1 WO2023226040 A1 WO 2023226040A1
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Prior art keywords
resource
terminal device
resources
time slots
candidate
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PCT/CN2022/095761
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English (en)
French (fr)
Inventor
丁伊
赵振山
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Oppo广东移动通信有限公司
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Priority to PCT/CN2022/095761 priority Critical patent/WO2023226040A1/zh
Publication of WO2023226040A1 publication Critical patent/WO2023226040A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/26—Resource reservation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal

Definitions

  • the embodiments of the present application relate to the field of communication technology, and in particular, to a resource exclusion method, device, equipment, storage medium and program product.
  • 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 exclusion method, device, equipment, storage medium and program product.
  • the technical solutions are as follows:
  • a resource exclusion method is provided.
  • the method is executed by a terminal device.
  • the method includes:
  • the candidate resources are excluded.
  • a resource exclusion device includes:
  • the determination module is used to determine the Q time slots corresponding to the unlistened time slots, where Q is a positive integer
  • An exclusion module configured to exclude the candidate resources if resources corresponding to one or more resource block sets in the Q time slots overlap with candidate resources or resources corresponding to the candidate resources.
  • 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 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 exclusion method.
  • a chip is provided.
  • the chip includes programmable logic circuits and/or program instructions, and is used to implement the above 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. Obtain and execute the computer instructions to implement the above resource exclusion method.
  • a mechanism for exclusion based on resource block sets is designed.
  • the terminal device determines that there is no SL transmission on a certain or certain resource block sets in the unlistened time slots. , the terminal device does not need to perform resource exclusion based on unlistened time slots on these resource block sets to avoid excessive resource exclusion.
  • 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 frequency domain resources of a resource pool provided by an embodiment of the present application.
  • Figure 6 is a schematic diagram of a comb resource block provided by an embodiment of the present application.
  • Figure 7 is a schematic diagram of resource block set division provided by an embodiment of the present application.
  • Figure 8 is a schematic diagram of resource exclusion provided by an embodiment of the present application.
  • Figure 9 is a flow chart of a resource exclusion method provided by an embodiment of the present application.
  • Figure 10 is a schematic diagram of resource exclusion provided by another embodiment of the present application.
  • Figure 11 is a block diagram of a resource exclusion device provided by an embodiment of the present application.
  • Figure 12 is a block diagram of a resource exclusion device provided by another 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 functions of core network equipment are mainly to provide user connections, manage users, and carry services.
  • As a bearer network it provides an interface to external networks.
  • 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.
  • the physical layer structure of SL communication in the NR V2X system is shown in Figure 2.
  • the first symbol in the time slot shown in Figure 2 is the AGC (Automatic Gain Control) symbol.
  • AGC Automatic Gain Control
  • PSCCH Physical Sidelink Control Channel, physical sidelink control channel
  • PSSCH Physical Sidelink Shared Channel, physical sidelink shared channel
  • PSCCH and PSSCH are sent in the same time slot.
  • the above-mentioned first side row control information and second side row control information may be two side row control information with different functions.
  • the first sidelink control information is carried in the PSCCH and mainly includes fields related to resource listening, which is convenient for other terminal equipment to decode and perform resource exclusion and resource selection.
  • the PSSCH also carries second sideline control information.
  • the second sideline control information mainly includes fields related to data demodulation, which facilitates other terminal equipment to demodulate the data in the PSSCH.
  • there may also be symbols corresponding to PSFCH which is used to transmit HARQ feedback information.
  • the symbols corresponding to PSFCH can appear once every 1, 2, or 4 time slots.
  • the GAP symbol between PSSCH and PSFCH in Figure 2 When there is no symbol corresponding to PSFCH in a certain time slot, for example, the GAP symbol between PSSCH and PSFCH in Figure 2, the AGC used to receive PSFCH, and the PSFCH symbol are all used to carry PSSCH.
  • the last symbol in the time slot is the GP (Guard Period, protection interval) symbol, that is, GAP.
  • the next symbol carrying the last symbol of PSSCH or PSFCH is the GP symbol.
  • SL UE performs transceiver conversion within GP symbols and does not transmit.
  • there are PSFCH resources in the time slot there are also GP symbols between the symbols of PSSCH and PSFCH. This is because the UE may transmit on the PSSCH and receive on the PSFCH, and also requires GP symbols for transceiver conversion.
  • 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 in the PSCCH to reserve resources to be used next.
  • 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.
  • the frequency domain resources of the resource pool are continuous, that is, they include N PRB continuous PRBs (Physical Resource Blocks), and N PRBs are determined by the resource pool configuration parameter sl-RB-Number. Further, in order to facilitate scheduling, M consecutive sub-channels are divided into the N PRB consecutive PRBs, and M is determined by the resource pool configuration parameter sl-NumSubchannel. Each subchannel consists of n subCHsize consecutive PRBs, and n subCHsize is determined by the resource pool configuration parameter sl-SubchannelSize.
  • the possible values of sl-SubchannelSize are ⁇ 10,12,15,20,25,50,75,100 ⁇ , which means that the frequency domain width of the subchannel in the resource pool may be ⁇ 10,12,15,20 ,25,50,75,100 ⁇ PRBs.
  • the frequency domain starting position of the resource pool is determined by the configuration parameter sl-StartRB-Subchannel of the resource pool.
  • Figure 5 shows a schematic diagram of the frequency domain resources of the resource pool.
  • the frequency domain starting position of the resource pool within the SL BWP is determined according to the resource pool configuration parameter sl-StartRB-Subchannel.
  • sl-StartRB-Subchannel also indicates the frequency domain starting point of the sub-channel with the lowest index in the resource pool.
  • M consecutive sub-channels are included in N PRB consecutive PRBs.
  • the width of each subchannel is n subCHsize PRBs.
  • the granularity in the frequency domain is a sub-channel, that is, the scheduled resources or autonomously selected resources occupy one or more consecutive sub-channels in the frequency domain.
  • the transmission resources scheduled by the network for the terminal equipment occupy two consecutive sub-channels in the frequency domain.
  • 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
  • RBset 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 7, one resource block actually corresponds to one IRB in Figure 6.
  • 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.
  • LBT On an LBT subband, in some cases, when there is a communication device transmitting, other communication devices cannot successfully access the channel through LBT. For example, when WIFI (Wireless Fidelity, Wireless Fidelity) is transmitting, SL-U users and other WIFI users will detect that the channel is busy, and LBT fails and cannot access the channel for transmission. Similarly, for example, when an SL-U user is transmitting, WIFI users and other SL-U users will also detect that the channel is busy and LBT fails.
  • WIFI Wireless Fidelity, Wireless Fidelity
  • the SL-U system is a synchronous system, that is, all transmissions start at the time slot boundary, and there are GP symbols between time slots, when multiple SL-Us are at the time slot boundary shown in Figure 2 at the same time, LBT succeeds before the AGC symbol , there may be multiple SL-U users transmitting in the same time slot.
  • 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.
  • the terminal device performs resource exclusion on the initialized candidate resource set.
  • Resource exclusion includes resource exclusion based on uninterrupted time slots (the above Step 1-1), and resource exclusion based on the sidelink control information intercepted. Exclude (Step 1-2 above).
  • the terminal device determines the corresponding Q time slots based on the unlistened time slots, and excludes the frequency domain resources corresponding to all sub-channels belonging to the resource pool in the Q time slots.
  • the resource pool may include multiple RB sets.
  • the resource pool includes 2 RB sets, each RB set is 20MHz. Since the channel occupancy situation on each RB set may be different, after determining the corresponding Q time slots based on the unlistened time slots, is it necessary to exclude all the resources corresponding to the RB set in the Q time slots? The current standard Not discussed yet.
  • Step 1-1 The purpose of Step 1-1 is that the terminal device does not listen due to data transmission, so according to each possible resource reservation period, all resources in the corresponding time slot that may be reserved by other SL UEs are excluded.
  • the terminal device transmits on RB set 2 (resource block set 2) in time slot m, resulting in no listening result in time slot m, but the terminal device determines that RB set 1 (resource block set 2) in time slot m Block set 1) is WIFI transmitting, that is, there will be no SL UE transmitting on RB set 1 in time slot m, so there is no need to exclude resources that may be reserved by SL UE in the corresponding time slot on RB set 1 .
  • this application designs a corresponding resource exclusion method based on RB set for the original Step 1-1.
  • 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 at least one of the following steps 910 to 920:
  • Step 910 Determine Q time slots corresponding to the unlistened time slots, where Q is a positive integer.
  • the unlistened time slot refers to the time slot in which the terminal device does not listen within the resource listening window. For example, the terminal device sends data in time slot t m within the resource listening window but does not listen, then the time slot t m is Slot not listened to.
  • step 910 includes: determining Q time slots corresponding to the unlistened time slots according to the unlistened time slots and the resource reservation period.
  • the resource reservation period may be a resource reservation period included in a set of resource reservation periods configured in the resource pool.
  • step 910 includes: according to the unlistened time slot and each resource reservation period included in the resource reservation period set configured in the resource pool, or each resource reservation period included in a subset of the resource reservation period set.
  • the Q time slots corresponding to the unlistened time slots are Q time slots starting from the unlistened time slot and separated by the resource reservation period. In some embodiments, for a certain resource reservation period and unlistened time slots, the corresponding Q time slots are determined to be Q time slots starting from the unlistened time slot and separated by the resource reservation period, Q is a positive integer.
  • Q equals 1 or 2 or or Prx is the resource reservation period
  • Tscal is determined based on the resource selection window or the candidate time slot determined by the terminal device. For example, Tscal is determined based on the end time slot of the resource selection window or the last time slot among the candidate time slots determined by the terminal device.
  • the above candidate time slots are determined from the resource selection window. For example, for partial sensing (partial sensing), candidate time slots are time slots within all or part of the time window determined from the resource selection window.
  • Step 920 If the resources corresponding to one or more resource block sets in Q time slots overlap with candidate resources or resources corresponding to the candidate resources, the candidate resources are excluded.
  • the resources corresponding to the one or more resource block sets refer to the resources on the one or more resource block sets, or the resources included in the one or more resource block sets.
  • the resources corresponding to the one or more resource block sets refer to the resources included in the one or more resource block sets and their associated guard zones.
  • the associated guard band mentioned here is one or more guard bands among the guard bands adjacent to the frequency domain position of the one or more resource block sets.
  • the one or more resource block sets include at least one of the following situations 1 to 4.
  • Case 1 The set of resource blocks corresponding to the terminal device's transmission.
  • the set of resource blocks corresponding to transmission by the terminal device refers to the set of resource blocks corresponding to data transmission by the terminal device.
  • the set of resource blocks corresponding to the terminal device's transmission includes: the set of resource blocks corresponding to the terminal device's transmission in the non-listening time slot, or in other words, the set of resource blocks corresponding to the terminal device's transmission in the non-listening time slot.
  • the collection of resource blocks used by the transfer That is to say, the resource block set corresponding to the terminal device's transmission includes: the resource block set corresponding to the terminal device's data transmission in the non-listening time slot, or in other words, the resource block set corresponding to the terminal device's data transmission in the non-listening time slot. The collection of resource blocks to use.
  • the non-listening time slots also include a set of resource blocks corresponding to which the terminal device does not transmit, the resources corresponding to the set of resource blocks within the above Q time slots are also included. There is no need to determine whether there is overlap with the candidate resource or the resource corresponding to the candidate resource, that is, there is no need to perform resource exclusion based on unlistened time slots for the resource block set.
  • resource exclusion based on unlistened time slots is performed for the resource block set corresponding to the terminal device's transmission.
  • the reason is that the resource block set transmitted by the SL terminal may be transmitted by other SL terminals at the same time, so for this The resource block set needs to be excluded based on unlistened time slots to avoid conflicts.
  • Case 2 A collection of resource blocks randomly selected by the terminal device.
  • the resource block set randomly selected by the terminal device includes: U resource block sets randomly selected by the terminal device from the P resource block sets included in the resource pool, P is a positive integer, and U is less than or equal to P positive integer. In some embodiments, P is determined based on the resource pool configuration. In some embodiments, U is configured by the network, or pre-configured, or depends on the implementation of the terminal device, or is a preset value specified by the standard, or is determined based on the measurement results of the terminal device, such as CBR (Channel Busy Ratio). rate), optionally, the CBR in the resource pool.
  • CBR Channel Busy Ratio
  • case 2 may be: the terminal device selects U resource block sets from P resource block sets included in the resource pool, and P is A positive integer, U is a positive integer less than or equal to P.
  • the selection here may be a non-random selection, such as sequential selection. For example, based on the index or identification information of the P resource block sets, U resource block sets are selected in order from small to large or from large to small.
  • the non-listening time slots if within the frequency domain of the resource pool, the non-listening time slots also include a resource block set not selected by the terminal device, the resources corresponding to the resource block set in the above Q time slots do not need to be the same as the candidate ones.
  • the resources or resources corresponding to the candidate resources are judged as to whether they overlap, that is, there is no need to perform resource exclusion based on unlistened time slots for this resource block set.
  • the terminal device can autonomously choose which resource block set or sets to perform resource exclusion based on unlistened time slots, and which resource block set or sets not to perform resource exclusion based on unlistened time slots, instead of in all cases. Resource exclusion based on unlistened time slots is performed on the resource block set to avoid excessive resource exclusion.
  • Case 3 The terminal device determines the set of resource blocks based on channel monitoring.
  • the terminal device performs channel monitoring on the resource block set included in the resource pool before the above-mentioned non-monitoring time slot, and obtains the corresponding monitoring result.
  • the terminal device determines the above one or more resource block sets according to the monitoring results corresponding to each resource block set. Among them, the listening result can be idle or busy.
  • channel monitoring refers to LBT
  • the monitoring result being idle refers to LBT success
  • the monitoring result being busy refers to LBT failure.
  • the channel sensing is channel sensing in GP symbols.
  • the channel monitoring is a fixed time length channel monitoring, such as a fixed time length LBT.
  • the fixed time length LBT may be a Type 2A or Type 2B LBT.
  • the channel monitoring is a random backoff-based channel monitoring, such as a random backoff-based LBT.
  • the random backoff-based LBT may be a Type 1 LBT.
  • the resource block set determined by the terminal device according to channel monitoring includes: a set of resource blocks in the resource pool, and the monitoring result is idle. In some embodiments, the resource block set determined by the terminal device according to channel monitoring includes: among the resource block sets included in the resource pool, the monitoring result is an idle resource block set. In some embodiments, the resource block set determined by the terminal device according to channel monitoring includes: among the resource block sets included in the resource pool, the monitoring result is all or part of the resource block set that is idle.
  • the set of resource blocks determined by the terminal device based on channel monitoring does not include: a set of resource blocks in the resource pool where the monitoring result is busy.
  • the resource block set determined by the terminal device according to channel monitoring does not include: among the resource block sets included in the resource pool, the monitoring result is a busy resource block set. The possible reason is that for the RB set whose listening result is busy, it is likely that WIFI is transmitting on this RB set and other SL terminals cannot transmit, so there is no need to perform resource exclusion based on unlistened time slots for this RB set. Avoid excessive resource exclusion.
  • Case 4 The set of resource blocks determined by the terminal device based on channel measurement.
  • the terminal device performs channel measurements on a set of resource blocks included in the resource pool and obtains corresponding measurement results.
  • the terminal device determines the above one or more resource block sets according to the measurement results corresponding to each resource block set.
  • the measurement results include but are not limited to at least one of the following: CBR, RSSI (Received Signal Strength Indicator, reference signal received power).
  • the terminal device performs channel measurement on a set of resource blocks included in the resource pool within a time window, and obtains corresponding measurement results; wherein the time window is located before the target time slot, and the target time slot is a candidate resource for the upper layer to trigger the lower layer.
  • the time slots reported by the collective are either unlistened time slots or determined based on the first candidate time slot.
  • the target time slot is time slot n
  • the time window can be [n-a, n-b], where a and b can be 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 set of resource blocks determined by the terminal device based on channel measurement includes: a set of resource blocks in the resource pool whose measurement results meet the first condition.
  • the resource block set determined by the terminal device based on channel measurement includes: among the resource block sets included in the resource pool, the resource block set whose measurement result satisfies the first condition.
  • the set of resource blocks whose measurement results satisfy the first condition include at least one of the following: the set of resource blocks whose CBR satisfies the second condition, and the set of resource blocks whose RSSI satisfies the third condition.
  • the set of resource blocks whose CBR meets the second condition includes: T resource block sets with the largest (or highest) CBR, where T is a positive integer; or, the set of resource blocks whose CBR is greater than or equal to the first threshold.
  • T and the first threshold can be configured by the network, or pre-configured, or depend on the implementation of the terminal device, or are preset values stipulated by the standard.
  • resource exclusion based on unlistened time slots does not need to be performed for the set of resource blocks.
  • the set of resource blocks whose RSSI meets the third condition includes: S resource block sets with the largest (or highest) RSSI corresponding ratio, where S is a positive integer; or, the RSSI corresponding ratio is greater than or equal to the th A two-threshold resource block set; where, for any resource block set included in the resource pool, the RSSI corresponding ratio refers to the RSSI measured by the terminal device in the resource unit corresponding to the resource block set is greater than or equal to the threshold value U
  • the number of resource units is the ratio of the total number of resource units corresponding to the resource block set.
  • S, the second threshold and the threshold value U may be configured by the network, or pre-configured, or depend on the implementation of the terminal device, or be preset values stipulated by the standard.
  • the resource units corresponding to the resource block set are resource units included in the resource block set.
  • the resource units corresponding to the above resource block set are resource units included in the resource block set and its associated guard zone.
  • the associated guard band mentioned here is one or more guard bands among the guard bands adjacent to the frequency domain position of the resource block set.
  • a resource unit is a sub-channel or an IRB (Intercomb Resource Block).
  • resource exclusion based on unlistened time slots does not need to be performed for the set of resource blocks.
  • resource exclusion based on unlistened slots is performed by selecting resource block sets corresponding to some RSSIs with a higher ratio, while resource block sets corresponding to some RSSIs with a lower ratio may not perform resource exclusion based on unlistened slots.
  • Resource exclusion because there is less data transmission on the resource block set with a lower RSSI ratio, there is no need to perform resource exclusion based on unlistened time slots for the resource block set with a lower RSSI ratio, to avoid excessive resource exclusion.
  • the candidate resource is any resource included in the candidate resource set, and the candidate resource set is a set of available resources within the resource selection window, or a set of resources within the candidate time slot determined for the terminal device.
  • the candidate resources are resources within the candidate time slot determined by the terminal device.
  • the resources corresponding to the candidate resources include: a series of resources whose frequency domain positions are the same as the candidate resources, and whose time domain positions are spaced by the resource reservation period of the terminal device.
  • the candidate resources and the resources corresponding to the candidate resources refer to the above regarding resource R(x, y) and the periodic resources corresponding to the resource R(x, y).
  • the resource corresponding to the candidate resource includes the candidate resource.
  • the terminal device excludes the candidate resource from the candidate resource set.
  • the terminal device determines the corresponding Q time slots based on the unlistened time slots and the resource reservation period.
  • the terminal device assumes that it has received the sidelink control information in the Q time slots.
  • the Q sidelink control information is The information indicates the resources corresponding to the one or more resource block sets (for a certain time slot among the Q time slots, it is assumed that sidelink control information is received in this time slot, and the sidelink control information indicates that the time slot resources corresponding to one or more resource block sets within the resource block set), if the resources indicated by the Q pieces of sidelink control information overlap with candidate resources or resources corresponding to the candidate resources, the terminal device excludes the candidate resources from the candidate resource set.
  • the resources corresponding to the one or more resource block sets are: all resources on the one or more resource block sets, or all IRBs, or all sub-channels, or the one or more resource block sets. All resources or all IRBs or all sub-channels contained in its associated guard band. Illustratively, candidate resources occupy contiguous sub-channels or IRBs.
  • the technical solution provided by the embodiment of this application is to design a mechanism for excluding resources based on a set of resource blocks in SL for the step of excluding resources based on unlistened time slots.
  • the terminal device When there is no SL transmission on some resource block sets, the terminal device does not need to perform resource exclusion based on unlistened time slots on these resource block sets to avoid excessive resource exclusion.
  • 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.
  • the resource selection window starts from n+T 1 and ends in n+T 2. Finish.
  • the terminal device performs resource listening from nT 0 to nT proc,0 (excluding nT proc,0 ).
  • T 1 , T 2 , T 0 , T proc,0 refer to the above introduction.
  • the terminal device takes all available resources in the resource selection window that belong to the resource pool used by the terminal device as resource set A.
  • Any resource in the resource set A is recorded as R(x, y).
  • x and y respectively indicate the frequency domain of the resource. location and time domain location.
  • the resource pool used by the terminal device contains 3 RB sets, namely RB set 1, 2 and 3.
  • the resource R(x,y) may be continuous or non-continuous in the frequency domain.
  • R(x,y) occupies continuous PRBs in the frequency domain, or R(x,y) includes One or more IRBs.
  • Figure 10 only gives a continuous example.
  • the terminal device transmits on RB set 2 and 3 of time slot m. Therefore, for the resource reservation period P1, if all resources corresponding to RB set 2 and 3 in the two time slots determined according to it , that is, the resource marked by the horizontal line hatch in Figure 10 overlaps with R(x, y) or the periodic resource corresponding to R(x, y), then the resource R(x, y) is excluded from the resource set A.
  • the resource reservation period P2 if all the resources corresponding to RB set 2 and 3 in one time slot are determined based on it, that is, the resources identified by the dotted shadow in Figure 10 are related to R(x,y) or R(x, If the periodic resources corresponding to y) overlap, then the resource R(x, y) is excluded from the resource set A. It should be noted that since the RB sets transmitted by terminal devices in different unlistened time slots are different, the RB sets used when excluding data based on different unlistened time slots will also be different.
  • the terminal device randomly selects RB set 2 and 3 from the RB set included in the resource pool. Therefore, for the resource reservation period P1, if RB set 2 and 3 correspond to the two time slots determined according to it, All resources, that is, the resources marked by the horizontal lines in Figure 10 overlap with R(x,y) or the periodic resources corresponding to R(x,y), then the resource R(x,y) is excluded from the resource set A. .
  • the resource reservation period P2 if all the resources corresponding to RB set 2 and 3 in one time slot are determined based on it, that is, the resources identified by the dotted shadow in Figure 10 are related to R(x,y) or R(x, If the periodic resources corresponding to y) overlap, then the resource R(x, y) is excluded from the resource set A.
  • the number of selected RB sets is the same, for example, the number is 2.
  • the number of selected RB sets is random. Select 2 RB sets.
  • the terminal device randomly selects 2 RB sets and excludes them based on the same RB set based on different listening time slots.
  • the number of RB sets selected by the terminal device can be determined based on the CBR measured by the terminal device.
  • the terminal device performs channel monitoring on RB set 1, 2 and 3 before time slot m, and the channel monitoring result on RB set 1 is busy (busy means that WIFI is likely to be transmitting, and other SL terminals cannot transmission, there is no need to perform resource exclusion based on unlistened time slots for this RB set 1). Therefore, for the resource reservation period P1, if all the resources corresponding to RB set 2 and 3 in the two time slots determined based on it, That is, if the resources marked by the horizontal lines in Figure 10 overlap with R(x, y) or the periodic resources corresponding to R(x, y), then the resource R(x, y) is excluded from the resource set A.
  • the resource reservation period P2 if all the resources corresponding to RB set 2 and 3 in one time slot are determined based on it, that is, the resources identified by dotted shadow in Figure 10 are related to R(x,y) or R(x, If the periodic resources corresponding to y) overlap, then the resource R(x, y) is excluded from the resource set A. It should be noted that because the results of channel monitoring before different unlistened time slots may be different, the RB set based on the exclusion based on different unlistened time slots may also be different.
  • the terminal device measures [n-1000, n-1] on RB set 1, 2 and 3 respectively.
  • the sub-channels or IRBs whose RSSI measurement value is higher than the configuration threshold U account for the total number of sub-channels or the total number of IRBs.
  • the ratio ⁇ The two RB sets with the largest (or highest) ratio ⁇ are determined to be RB set 2 and 3.
  • the number of RB sets determined is configured by the network.
  • the resource reservation period P1 if all the resources corresponding to RB set 2 and 3 in the two time slots determined according to it, that is, the resources marked by the horizontal line hatch in Figure 10 are the same as R(x, y) or R( If the periodic resources corresponding to x, y) overlap, then the resource R(x, y) is excluded from the resource set A.
  • the resource reservation period P2 if all the resources corresponding to RB set 2 and 3 in one time slot are determined based on it, that is, the resources identified by the dotted shadow in Figure 10 are related to R(x,y) or R(x, If the periodic resources corresponding to y) overlap, then the resource R(x, y) is excluded from the resource set A.
  • RB set 2 and 3 are used when excluding all unlistened time slots.
  • Figure 11 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 1100 may include: a determination module 1110 and an exclusion module 1120.
  • the determination module 1110 is used to determine Q time slots corresponding to the unlistened time slots, where Q is a positive integer.
  • the exclusion module 1120 is configured to exclude the candidate resources if the resources corresponding to one or more resource block sets in the Q time slots overlap with candidate resources or resources corresponding to the candidate resources.
  • the one or more resource block sets include at least one of the following:
  • the set of resource blocks corresponding to the transmission by the terminal device
  • the set of resource blocks determined by the terminal device based on channel measurements.
  • the set of resource blocks corresponding to transmission by the terminal device includes: a set of resource blocks corresponding to transmission by the terminal device in the non-listening time slot.
  • the resource block set randomly selected by the terminal device includes: U resource block sets randomly selected by the terminal device from P resource block sets included in the resource pool, P is a positive integer, and U is A positive integer less than or equal to P.
  • U is configured by the network, or pre-configured, or depends on the implementation of the terminal device, or is a preset value specified by the standard, or is determined based on the measurement results of the terminal device.
  • the set of resource blocks determined by the terminal device according to channel monitoring includes: a set of resource blocks in the resource pool, and the monitoring result is idle.
  • the resource block set determined by the terminal device based on channel monitoring does not include: in the resource pool, the resource block set whose monitoring result is busy.
  • the device 1100 further includes: a monitoring module 1130, configured to perform channel monitoring on the resource block set included in the resource pool before the non-listening time slot, to obtain Corresponding monitoring results.
  • a monitoring module 1130 configured to perform channel monitoring on the resource block set included in the resource pool before the non-listening time slot, to obtain Corresponding monitoring results.
  • the set of resource blocks determined by the terminal device based on channel measurements includes: a set of resource blocks in the resource pool whose measurement results meet the first condition.
  • the resource block set whose measurement result satisfies the first condition includes at least one of the following: the resource block set whose CBR satisfies the second condition; and the resource block set whose RSSI satisfies the third condition.
  • the set of resource blocks whose CBR meets the second condition includes: T resource block sets with the largest CBR, where T is a positive integer; or a set of resource blocks whose CBR is greater than or equal to the first threshold.
  • the resource block set whose RSSI meets the third condition includes: S resource block sets whose RSSI corresponding ratio is the largest, S is a positive integer; or, the RSSI corresponding ratio is greater than or equal to the second threshold.
  • Resource block set wherein, for any resource block set included in the resource pool, the ratio corresponding to the RSSI means that in the resource unit corresponding to the resource block set, the RSSI measured by the terminal device is greater than or equal to the threshold.
  • one resource unit is a sub-channel or an comb resource block IRB.
  • the device 1100 further includes: a measurement module 1140, configured to perform channel measurements on a set of resource blocks included in the resource pool within a time window to obtain corresponding measurement results; wherein , the time window is located before the target time slot, and the target time slot is the time slot in which the upper layer triggers the lower layer to report the candidate resource set, or is the unlistened time slot, or is determined based on the first candidate time slot.
  • a measurement module 1140 configured to perform channel measurements on a set of resource blocks included in the resource pool within a time window to obtain corresponding measurement results; wherein , the time window is located before the target time slot, and the target time slot is the time slot in which the upper layer triggers the lower layer to report the candidate resource set, or is the unlistened time slot, or is determined based on the first candidate time slot.
  • the determining module 1110 is configured to determine Q time slots corresponding to the unlistened time slots according to the unlistened time slots and the resource reservation period.
  • the determining module 1110 is configured to determine the non-listening time slot and each resource reservation period included in the resource reservation period set configured in the resource pool, or the resource reservation For each resource reservation period included in the subset of the period set, the Q time slots corresponding to the unlistened time slots are determined.
  • the Q time slots corresponding to the non-interception time slots are Q time slots starting from the non-interception time slot and separated by the resource reservation period.
  • Q equals 1 or 2 or or Prx is the resource reservation period
  • Tscal is determined based on the resource selection window or the candidate time slot determined by the terminal device.
  • the candidate resource is any resource included in a candidate resource set, which is a set of available resources within a resource selection window, or is a resource within a candidate time slot determined by the terminal device. composed collection.
  • the resources corresponding to the candidate resources include: a series of resources whose frequency domain positions are the same as the candidate resources and whose time domain positions are spaced by the resource reservation period of the terminal device.
  • 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 used to determine the Q time slots corresponding to the unlistened time slots, where Q is a positive integer; if the resources corresponding to one or more resource block sets within the Q time slots are equal to If candidate resources or resources corresponding to the candidate resources overlap, the candidate resources are excluded.
  • 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, in which a computer program is stored, and the computer program is configured to be executed by a processor to implement the above 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).
  • An embodiment of the present application also provides a chip, which includes programmable logic circuits and/or program instructions, and is used to implement the above resource exclusion method when the chip is running.
  • Embodiments of the present application also provide a computer program product or computer program.
  • the computer program product or computer program includes computer instructions.
  • the computer instructions are stored in a computer-readable storage medium.
  • the processor reads the computer instructions from the computer-readable storage medium.
  • the medium reads and executes the computer instructions to implement the above 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

一种资源排除方法、装置、设备、存储介质及程序产品，涉及通信技术领域。上述方法包括：确定未侦听时隙对应的Q个时隙，Q为正整数(910)；若Q个时隙内一个或多个资源块集合对应的资源，与候选资源或该候选资源对应的资源重叠，则排除该候选资源(920)。针对SL中根据未侦听时隙进行资源排除的步骤，设计了基于资源块集合进行排除的机制，当终端设备确定在未侦听时隙内某个或某些资源块集合上没有SL传输时，终端设备无需在这些资源块集合上进行基于未侦听时隙的资源排除，避免资源排除过量。

Description

资源排除方法、装置、设备、存储介质及程序产品 技术领域
本申请实施例涉及通信技术领域，特别涉及一种资源排除方法、装置、设备、存储介质及程序产品。
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排除方法、装置、设备、存储介质及程序产品。所述技术方案如下：
根据本申请实施例的一个方面，提供了一种资源排除方法，所述方法由终端设备执行，所述方法包括：
确定未侦听时隙对应的Q个时隙，Q为正整数；
若所述Q个时隙内一个或多个资源块集合对应的资源，与候选资源或所述候选资源对应的资源重叠，则排除所述候选资源。
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：
确定模块，用于确定未侦听时隙对应的Q个时隙，Q为正整数；
排除模块，用于若所述Q个时隙内一个或多个资源块集合对应的资源，与候选资源或所述候选资源对应的资源重叠，则排除所述候选资源。
根据本申请实施例的一个方面，提供了一种终端设备，所述终端设备包括处理器和存储器，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：
针对SL中根据未侦听时隙进行资源排除的步骤，设计了基于资源块集合进行排除的机制，当终端设备确定在未侦听时隙内某个或某些资源块集合上没有SL传输时，终端设备无需在这些资源块集合上进行基于未侦听时隙的资源排除，避免资源排除过量。
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资源池的频域资源的示意图；
图6是本申请一个实施例提供的梳齿资源块的示意图；
图7是本申请一个实施例提供的资源块集合划分的示意图；
图8是本申请一个实施例提供的资源排除的示意图；
图9是本申请一个实施例提供的资源排除方法的流程图；
图10是本申请另一个实施例提供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排除装置的框图；
图12是本申请另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。图2所示的时隙中第一个符号为AGC(Automatic Gain Control，自动增益控制)符号，当SL UE进行接收时，可以在该符号中对接收功率进行调整，调整为适合解调的功率。当SL UE进行发送时，在AGC符号上重复发送该符号之后一个符号中的内容。图2中，PSCCH(Physical Sidelink Control Channel，物理侧行控制信道)用于承载第一侧行控制信息，PSSCH(Physical Sidelink Shared Channel，物理侧行共享信道)用于承载数据和第二侧行控制信息。PSCCH和PSSCH在同一时隙中发送。上述第一侧行控制信息和第二侧行控制信息可以是两个具有不同作用的侧行控制信息。例如，第一侧行控制信息承载在PSCCH中，主要包含资源侦听相关的域，方便其他终端设备解码后进行资源排除与资源选择。在PSSCH中，除了数据外，还承载第二侧行控制信息，第二侧行控制信息主要包括数据解调相关的域，方便其他终端设备解调该PSSCH中的数据。在某一个时隙中，还可能存在PSFCH对应的符号，PSFCH用于传输HARQ反馈信息。取决于资源池配置，PSFCH对应的符号可以每1,2,4个时隙出现一次。当某个时隙不存在PSFCH对应的符号时，例如图2中的PSSCH与PSFCH之间的GAP符号、用于接收PSFCH的AGC以及PSFCH符号均用于承载PSSCH。通常情况下，时隙中的最后一个符号为GP(Guard Period，保护间隔)符号，即GAP。或者说承载PSSCH或PSFCH的最后一个符号的下一个符号为GP符号。SL UE在GP符号内进行收发转换，不进行传输。当时隙中存在PSFCH资源时，PSSCH与PSFCH的符号之间也存在GP符号。这是因为UE可能在PSSCH发送，在PSFCH进行接收，也需要GP符号进行收发转换。
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 PCTCN2022095761-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 PCTCN2022095761-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 PCTCN2022095761-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 PCTCN2022095761-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.NR-V2X中的资源池
在NR-V2X中，资源池的频域资源是连续的，即包括N PRB个连续的PRB(Physical Resource Block，物理资源块)，N PRB由资源池配置参数sl-RB-Number确定。进一步地，为了便于调度，在该N PRB个连续的PRB中划分出M个连续的子信道，M由资源池配置参数sl-NumSubchannel确定。每个子信道由n subCHsize个连续的PRB组成,n subCHsize由资源池配置参数sl-SubchannelSize确定。在NR-V2X中，sl-SubchannelSize可能的取值为{10,12,15,20,25,50,75,100}，即表示资源池内子信道的频域宽度可能为{10,12,15,20,25,50,75,100}个PRB。此外，资源池的频域起始位置由资源池的配置参数sl-StartRB-Subchannel确定。
如图5所示为资源池的频域资源示意图，根据资源池配置参数sl-StartRB-Subchannel确定该资源池在SL BWP内的频域起始位置。同时sl-StartRB-Subchannel也表示该资源池内索引最低的子信道的频域起点。在N PRB个连续的PRB中包括M个连续的子信道。每个子信道的宽度为n subCHsize个PRB。需要指出的是，从物理层的角度，如果N PRB不能被n subCHsize整除，则在资源池中N PRB除以n subCHsize后剩余的PRB不用于SL传输，即会浪费索引值最大的几个PRB。当终端设备被网络调度或自主选取传输资源时，频域上的粒度为一个子信道，即被调度的资源或自主选取的资源在频域上占一个或多个连续的子信道。例如图5中，终端设备被网络调度的传输资源在频域上占两个连续的子信道。
6.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6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RBset(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7中，一个资源块实际对应图6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。
在一个LBT子带上，在某些情况下，当存在通信设备进行发送时，其他通信设备无法LBT成功接入信道。例如当WIFI(Wireless Fidelity，无线保真)进行传输时，SL-U用户和其他的WIFI用户都会检测信道忙碌，LBT失败无法接入信道进行传输。同样，例如SL-U用户进行传输时，WIFI用户和其他SL-U用户也会检测信道忙碌，LBT失败。然而由于SL-U系统是同步系统，即均在时隙边界开始传输，且时隙间存在GP符号，当多个SL-U同时在图2所示的时隙边界，即AGC符号前LBT成功，会存在多个SL-U用户在同一时隙内进行传输的情况。
7.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。
根据上文所述，终端设备对初始化的候选资源集合进行资源排除，资源排除包括根据未侦听的时隙进行资源排除(上述Step1-1)，以及根据侦听到的侧行控制信息进行资源排除(上述Step1-2)。在Step 1-1中，终端设备根据未侦听时隙确定对应的Q个时隙，把该Q个时隙内属于资源池的全部子信道对应的频域资源均排除掉。然而，在SL-U系统中，资源池中可能包括多个RB set，例如资源池包括2个RB set，每个RB set 20MHz。由于各个RB set上的信道占用情况可能不同，当根据未侦听时隙确定对应的Q个时隙后，是否有必要将该Q个时隙内全部RB set对应的资源均排除掉，目前标准还未讨论。
Step 1-1的目的是，终端设备由于数据传输未进行侦听，因此根据每一种可能的资源预留周期，将对应时隙内的可能被其他SL UE预留的全部资源均排除掉。但在图8中，假设终端设备在时隙m中RB set 2(资源块集合2)上进行传输导致在时隙m没有侦听结果，但终端设备判断在时隙m中RB set 1(资源块集合1)上是WIFI在传输，即在时隙m中RB set 1上不会有SL UE进行传输，因此也就没有必要排除RB set 1上对应时隙内可能被SL UE预留的资源。
因此，本申请针对原有Step 1-1设计了相应的基于RB set的资源排除方法。
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910～920中的至少一个步骤：
步骤910，确定未侦听时隙对应的Q个时隙，Q为正整数。
未侦听时隙是指资源侦听窗内终端设备没有进行侦听的时隙，例如终端设备在资源侦听窗内时隙t m发送数据，没有进行侦听，则该时隙t m为未侦听时隙。
在一些实施例中，步骤910包括：根据未侦听时隙以及资源预留周期，确定未侦听时隙对应的Q个时隙。示例性地，资源预留周期可以是资源池中配置的资源预留周期集合中包括的资源预留周期。
在一些实施例中，步骤910包括：根据未侦听时隙以及资源池中配置的资源预留周期集合中包括的每一种资源预留周期，或资源预留周期集合的子集中包括的每一种资源预留周期，确定未侦听时隙对应的Q个时隙。记资源预留周期集合为M，终端设备根据M或M的子集中包括的每一种资源预留周期，均进行对候选资源的排除。在一些实施例中，上述M或M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。
在一些实施例中，未侦听时隙对应的Q个时隙为从该未侦听时隙开始，以资源预留周期为间隔的Q个时隙。在一些实施例中，针对某一资源预留周期和未侦听时隙，确定对应的Q个时隙为从未侦听时隙开始，以该资源预留周期为间隔的Q个时隙，Q为正整数。
在一些实施例中，Q等于1或2或
Figure PCTCN2022095761-appb-000005
或
Figure PCTCN2022095761-appb-000006
Prx为资源预留周期，Tscal根据资源选择窗或终端设备确定的候选时隙确定。例如，Tscal根据资源选择窗的结束时隙或终端设备确定的候选时隙中的最后一个时隙确定。上述候选时隙从资源选择窗中确定。例如，针对partialsensing(部分侦听)，候选时隙是从资源选择窗中确定的全部或部分时间窗内的时隙。
步骤920，若Q个时隙内一个或多个资源块集合对应的资源，与候选资源或该候选资源对应的资源重叠，则排除该候选资源。
在一些实施例中，上述一个或多个资源块集合对应的资源，是指该一个或多个资源块集合上的资源，或者说该一个或多个资源块集合包括的资源。
在一些实施例中，上述一个或多个资源块集合对应的资源，是指该一个或多个资源块集合及其关联的保护带包括的资源。这里所说的关联的保护带，为与该一个或多个资源块集合频域位置相邻的保护带中的一个或多个保护带。
在一些实施例中，上述一个或多个资源块集合，包括以下情况1～4中的至少之一。
情况1：终端设备进行传输所对应的资源块集合。
在一些实施例中，终端设备进行传输所对应的资源块集合，是指终端设备数据传输所对应的资源块集合。
在一些实施例中，终端设备进行传输所对应的资源块集合，包括：终端设备在未侦听时隙内进行传输所对应的资源块集合，或者说，终端设备在未侦听时隙内进行传输所使用的资源块集合。也就是说，终端设备进行传输所对应的资源块集合，包括：终端设备在未侦听时隙内数据传输所对应的资源块集合，或者说，终端设备在未侦听时隙内数据传输所使用的资源块集合。
在一些实施例中，如果资源池的频域范围内，在未侦听时隙内还包括终端设备不进行传输所对应的资源块集合，在上述Q个时隙内该资源块集合对应的资源无需与候选资源或该候选资源对应的资源进行是否重叠的判断，即针对该资源块集合不需要执行基于未侦听时隙的资源排除。
在此示例中，针对终端设备进行传输所对应的资源块集合执行基于未侦听时隙的资源排除，原因是SL终端传输的资源块集合上，可能同时存在其他SL终端的传输，所以针对该资源块集合要做基于未侦听时隙的资源排除，以避免冲突。
情况2：终端设备随机选择的资源块集合。
在一些实施例中，终端设备随机选择的资源块集合，包括：终端设备在资源池包括的P个资源块集合中随机选择的U个资源块集合，P为正整数，U为小于或等于P的正整数。在一些实施例中，P根据资源池配置确定。在一些实施例中，U由网络配置，或预配置，或取决于终端设备的实现，或由标准规定的预设值，或基于终端设备的测量结果确定，如CBR(Channel Busy Ratio，信道繁忙率)，可选地，为资源池中的CBR。
在一些实施例中，针对该情况2，也可以不采用随机选择的方式，例如该情况2可以是：终端设备在资源池包括的P个资源块集合中选择的U个资源块集合，P为正整数，U为小于或等于P的正整数。这里的选择可以是非随机选择的方式，例如按序选择，例如根据P个资源块集合的索引或标识信息，按照从小到大的顺序或者从大到小的顺序，选择U个资源块集合。
在一些实施例中，如果资源池的频域范围内，在未侦听时隙内还包括终端设备未选择的资源块集合，在上述Q个时隙内该资源块集合对应的资源无需与候选资源或该候选资源对应的资源进行是否重叠的判断，即针对该资源块集合不需要执行基于未侦听时隙的资源排除。
在此示例中，终端设备可以自主选择针对哪个或哪些资源块集合执行基于未侦听时隙的资源排除，哪个或哪些资源块集合不执行基于未侦听时隙的资源排除，而不是在全部资源块集合上均执行基于未侦听时隙的资源排除，避免资源排除过量。
情况3：终端设备根据信道监听确定的资源块集合。
在一些实施例中，终端设备在上述未侦听时隙前，在资源池包括的资源块集合上进行信道监听，得到相应的监听结果。终端设备根据各个资源块集合分别对应的监听结果，确定上述一个或多个资源块集合。其中，监听结果可以是空闲或忙碌。
在一些实施例中，信道监听指LBT，监听结果为空闲是指LBT成功，监听结果为忙碌是指LBT失败。在一些实施例中，信道监听是在GP符号中的信道监听。在一些实施例中，信道监听为固定时间长度的信道监听，例如固定时间长度的LBT，上述固定时间长度的LBT可以是Type2A或Type 2B的LBT。在一些实施例中，信道监听为基于随机退避的信道监听，例如基于随机退避的LBT，该基于随机退避的LBT可以是Type 1的LBT。
在一些实施例中，终端设备根据信道监听确定的资源块集合，包括：资源池中，监听结果为空闲的资源块集合。在一些实施例中，终端设备根据信道监听确定的资源块集合，包括：资源池包括的资源块集合中，监听结果为空闲的资源块集合。在一些实施例中，终端设备根据信道监听确定的资源块集合，包括：资源池包括的资源块集合中，监听结果为空闲的全部或部分资源块集合。
在一些实施例中，终端设备根据信道监听确定的资源块集合，不包括：资源池中，监听结果为忙碌的资源块集合。在一些实施例中，终端设备根据信道监听确定的资源块集合，不包括：资源池包括的资源块集合中，监听结果为忙碌的资源块集合。可能的原因在于，对于监听结果为忙碌的RB set，在该RB set上很可能是WIFI在传输，其他SL终端无法进行传输，则无需针对该RB set执行基于未侦听时隙的资源排除，避免资源排除过量。
情况4：终端设备根据信道测量确定的资源块集合。
在一些实施例中，终端设备在资源池包括的资源块集合上进行信道测量，得到相应的测量结果。终端设备根据各个资源块集合分别对应的测量结果，确定上述一个或多个资源块集合。其中，测量结果包括但不限于以下至少之一：CBR、RSSI(Received Signal Strength Indicator，参考信号接收功率)。
在一些实施例中，终端设备在时间窗口内对资源池包括的资源块集合进行信道测量，得到相应的测量结果；其中，时间窗口位于目标时隙之前，目标时隙为高层触发底层进行候选资源集合上报的时隙，或为未侦听时隙，或根据第一个候选时隙确定。例如，目标时隙为时隙n，时间窗口可以是[n-a,n-b]，其中，a和b可以由网络配置，或预配置，或取决于终端设 备的实现，或由标准规定的预设值。
在一些实施例中，终端设备根据信道测量确定的资源块集合，包括：资源池中，测量结果满足第一条件的资源块集合。在一些实施例中，终端设备根据信道测量确定的资源块集合，包括：资源池包括的资源块集合中，测量结果满足第一条件的资源块集合。在一些实施例中，测量结果满足第一条件的资源块集合，包括以下至少之一：CBR满足第二条件的资源块集合，RSSI满足第三条件的资源块集合。
在一些实施例中，CBR满足第二条件的资源块集合，包括：CBR最大(或者说最高)的T个资源块集合，T为正整数；或者，CBR大于或等于第一阈值的资源块集合。其中，T和第一阈值可以由网络配置，或预配置，或取决于终端设备的实现，或由标准规定的预设值。在一些实施例中，对于CBR不满足第二条件的资源块集合，针对该资源块集合不需要执行基于未侦听时隙的资源排除。在此示例中，通过选择针对一些CBR较高的资源块集合执行基于未侦听时隙的资源排除，而针对一些CBR较低的资源块集合可以不执行基于未侦听时隙的资源排除，因为CBR较低的资源块集合上数据传输较少，无需针对CBR较低的资源块集合执行基于未侦听时隙的资源排除，避免资源排除过量。
在一些实施例中，RSSI满足第三条件的资源块集合，包括：RSSI对应的比率最大(或者说最高)的S个资源块集合，S为正整数；或者，RSSI对应的比率大于或等于第二阈值的资源块集合；其中，对于资源池包括的任意一个资源块集合，RSSI对应的比率是指该资源块集合对应的资源单元中，终端设备测量得到的RSSI大于或等于门限值U的资源单元数量，与资源块集合对应的资源单元总数量的比值。其中，S、第二阈值和门限值U可以由网络配置，或预配置，或取决于终端设备的实现，或由标准规定的预设值。示例性地，上述资源块集合对应的资源单元，为该资源块集合包括的资源单元。示例性地，上述资源块集合对应的资源单元，为该资源块集合及其关联的保护带包括的资源单元。这里所说的关联的保护带，为与该资源块集合频域位置相邻的保护带中的一个或多个保护带。在一些实施例中，一个资源单元为一个子信道或一个IRB(梳齿资源块)。在一些实施例中，对于RSSI不满足第三条件的资源块集合，针对该资源块集合不需要执行基于未侦听时隙的资源排除。在此示例中，通过选择一些RSSI对应的比率较高的资源块集合执行基于未侦听时隙的资源排除，而一些RSSI对应的比率较低的资源块集合可以不执行基于未侦听时隙的资源排除，因为RSSI对应的比率较低的资源块集合上数据传输较少，无需针对RSSI对应的比率较低的资源块集合执行基于未侦听时隙的资源排除，避免资源排除过量。
在一些实施例中，候选资源为候选资源集合中包括的任意一个资源，候选资源集合为资源选择窗内的可用资源构成的集合，或为终端设备确定的候选时隙内的资源构成的集合。示例性地，候选资源为终端设备确定的候选时隙内的资源。
在一些实施例中，候选资源对应的资源包括：与候选资源频域位置相同，时域位置以终端设备的资源预留周期为间隔的一系列资源。例如，候选资源以及该候选资源对应的资源参照上文关于资源R(x,y)和该资源R(x,y)对应的周期性资源。在一些实施例中，候选资源对应的资源包括该候选资源。
在一些实施例中，若根据未侦听时隙以及资源预留周期确定的Q个时隙中，上述一个或多个资源块集合对应的资源与候选资源或该候选资源对应的资源重叠，则终端设备从候选资源集合中排除该候选资源。
另一种说法为，终端设备根据未侦听时隙以及资源预留周期确定对应的Q个时隙，终端设备假定在该Q个时隙中收到了侧行控制信息，该Q个侧行控制信息指示了该一个或多个资源块集合对应的资源(对于该Q个时隙中的某个时隙，假定在该时隙收到了侧行控制信息，该侧行控制信息指示了该时隙内一个或多个资源块集合对应的资源)，若该Q个侧行控制信息指示的资源与候选资源或该候选资源对应的资源重叠，则终端设备从候选资源集合中排除该候选资源。
示例性地，上述一个或多个资源块集合对应的资源为：该一个或多个资源块集合上的全部资源或者说全部的IRB或者说全部的子信道，或者该一个或多个资源块集合及其关联的保护带所包含的全部资源或全部的IRB或全部的子信道。示例性地，候选资源占用连续的子信道或IRB。
本申请实施例提供的技术方案，针对SL中根据未侦听时隙进行资源排除的步骤，设计了基于资源块集合进行排除的机制，当终端设备确定在未侦听时隙内某个或某些资源块集合上没有SL传输时，终端设备无需在这些资源块集合上进行基于未侦听时隙的资源排除，避免资源排除过量。
如图10所示，终端设备在时隙n触发资源选择或重选或时隙n是高层触发物理层上报候选资源集合的时隙，资源选择窗从n+T 1开始，到n+T 2结束。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 1,T 2,T 0,T proc,0参照上文介绍。
终端设备将资源选择窗内所有属于该终端设备所用资源池的可用资源作为资源集合A，该资源集合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。终端设备所用资源池包含3个RB set，即RB set 1、2和3。在一些实施例中，资源R(x,y)在频域上可以是连续的或非连续的，比如R(x,y)在频域上占连续的PRB，或者R(x,y)包括一个或多个IRB。图10仅是给出了一个连续的示例。
例如图10，终端设备在时隙m进行传输没有进行侦听，依次根据所用资源池配置中的资源预留周期集合M(假设M包括资源预留周期P1和P2)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P1，假定Q值计算为2，则对应的Q个时隙为图10中从时隙m映射的以资源预留周期P1为间隔接下来的2个包含横线阴影标识的时隙。对于其中某个资源预留周期P2，假定Q值计算为Q＝1，则对应的Q个时隙为图10中从时隙m映射的以资源预留周期P2为间隔的接下来的1个包括点状阴影标识的时隙。
在一些实施例中，终端设备在时隙m的RB set 2和3上进行传输，因此，对于资源预留周期P1，若根据其确定的两个时隙中RB set 2和3对应的全部资源，即图10中横线阴影标识的资源与R(x,y)或与R(x,y)对应的周期性资源重叠，则从资源集合A中排除资源R(x,y)。对于资源预留周期P2，若根据其确定的1个时隙中RB set 2和3对应的全部资源，即图10中点状阴影标识的资源与R(x,y)或与R(x,y)对应的周期性资源重叠，则从资源集合A中排除资源R(x,y)。需要注意的是，由于终端设备在不同的未侦听时隙进行传输的RB set不同，所以根据不同的未侦听时隙进行排除时所使用的RB set也会不同。
在一些实施例中，终端设备随机从资源池包括的RB set内选择了RB set 2和3，因此，对于资源预留周期P1，若根据其确定的两个时隙中RB set 2和3对应的全部资源，即图10中横线阴影标识的资源与R(x,y)或与R(x,y)对应的周期性资源重叠，则从资源集合A中排除资源R(x,y)。对于资源预留周期P2，若根据其确定的1个时隙中RB set 2和3对应的全部资源，即图10中点状阴影标识的资源与R(x,y)或与R(x,y)对应的周期性资源重叠，则从资源集合A中排除资源R(x,y)。可选地，终端设备根据不同的未侦听时隙进行排除时，选择的RB set的数量是相同的，例如该数量为2，终端设备根据不同的未侦听时隙进行排除时，都随机选择2个RB set。可选地，终端设备的高层触发底层上报候选资源集合之后，终端设备随机选择2个RB set，在根据不同的侦听时隙进行排除时基于同样的RB set。终端设备选择的RB set的数量可以根据终端设备测量的CBR确定。
在一些实施例中，终端设备在时隙m前的RB set 1、2和3上均进行信道监听，RB set 1上信道监听结果为忙碌(忙碌表示很可能是WIFI在传，其他SL终端无法传输，则无需针对该RB set 1执行基于未侦听时隙的资源排除)，因此，对于资源预留周期P1，若根据其确定的两个时隙中RB set 2和3对应的全部资源，即图10中横线阴影标识的资源与R(x,y)或与R(x,y)对应的周期性资源重叠，则从资源集合A中排除资源R(x,y)。对于资源预留周期P2， 若根据其确定的1个时隙中RB set 2和3对应的全部资源，即图10中点状阴影标识的资源与R(x,y)或与R(x,y)对应的周期性资源重叠，则从资源集合A中排除资源R(x,y)。需要注意的是，因为在不同的未侦听时隙前做信道监听的结果可能不同，所以根据不同的未侦听时隙进行排除时基于的RB set也可能不同。
在一些实施例中，终端设备在RB set 1、2和3上分别测量[n-1000,n-1]中，RSSI测量值高于配置门限U的子信道或IRB占子信道总数或IRB总数的比率α。确定比率α最大(或者说最高)的两个RB set为RB set 2和3，确定RB set的数量由网络配置。因此，对于资源预留周期P1，若根据其确定的两个时隙中RB set 2和3对应的全部资源，即图10中横线阴影标识的资源与R(x,y)或与R(x,y)对应的周期性资源重叠，则从资源集合A中排除资源R(x,y)。对于资源预留周期P2，若根据其确定的1个时隙中RB set 2和3对应的全部资源，即图10中点状阴影标识的资源与R(x,y)或与R(x,y)对应的周期性资源重叠，则从资源集合A中排除资源R(x,y)。在该实施例中，针对所有的未侦听时隙进行排除时，均使用RB set 2和3。
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11所示，该装置1100可以包括：确定模块1110和排除模块1120。
确定模块1110，用于确定未侦听时隙对应的Q个时隙，Q为正整数。
排除模块1120，用于若所述Q个时隙内一个或多个资源块集合对应的资源，与候选资源或所述候选资源对应的资源重叠，则排除所述候选资源。
在一些实施例中，所述一个或多个资源块集合，包括以下至少之一：
终端设备进行传输所对应的资源块集合；
所述终端设备随机选择的资源块集合；
所述终端设备根据信道监听确定的资源块集合；
所述终端设备根据信道测量确定的资源块集合。
在一些实施例中，所述终端设备进行传输所对应的资源块集合，包括：所述终端设备在所述未侦听时隙内进行传输所对应的资源块集合。
在一些实施例中，所述终端设备随机选择的资源块集合，包括：所述终端设备在资源池包括的P个资源块集合中随机选择的U个资源块集合，P为正整数，U为小于或等于P的正整数。
在一些实施例中，U由网络配置，或预配置，或取决于所述终端设备的实现，或由标准规定的预设值，或基于所述终端设备的测量结果确定。
在一些实施例中，所述终端设备根据信道监听确定的资源块集合，包括：资源池中，监听结果为空闲的资源块集合。
在一些实施例中，所述终端设备根据信道监听确定的资源块集合，不包括：所述资源池中，监听结果为忙碌的资源块集合。
在一些实施例中，如图12所示，所述装置1100还包括：监听模块1130，用于在所述未侦听时隙前在所述资源池包括的资源块集合上进行信道监听，得到相应的监听结果。
在一些实施例中，所述终端设备根据信道测量确定的资源块集合，包括：资源池中，测量结果满足第一条件的资源块集合。
在一些实施例中，所述测量结果满足第一条件的资源块集合，包括以下至少之一：CBR满足第二条件的资源块集合；RSSI满足第三条件的资源块集合。
在一些实施例中，所述CBR满足第二条件的资源块集合，包括：CBR最大的T个资源 块集合，T为正整数；或者，CBR大于或等于第一阈值的资源块集合。
在一些实施例中，所述RSSI满足第三条件的资源块集合，包括：RSSI对应的比率最大的S个资源块集合，S为正整数；或者，RSSI对应的比率大于或等于第二阈值的资源块集合；其中，对于所述资源池包括的任意一个资源块集合，所述RSSI对应的比率是指所述资源块集合对应的资源单元中，所述终端设备测量得到的RSSI大于或等于门限值的资源单元数量，与所述资源块集合对应的资源单元总数量的比值。
在一些实施例中，一个所述资源单元为一个子信道或一个梳齿资源块IRB。
在一些实施例中，如图12所示，所述装置1100还包括：测量模块1140，用于在时间窗口内对所述资源池包括的资源块集合进行信道测量，得到相应的测量结果；其中，所述时间窗口位于目标时隙之前，所述目标时隙为高层触发底层进行候选资源集合上报的时隙，或为所述未侦听时隙，或根据第一个候选时隙确定。
在一些实施例中，所述确定模块1110，用于根据所述未侦听时隙以及资源预留周期，确定所述未侦听时隙对应的Q个时隙。
在一些实施例中，所述确定模块1110，用于根据所述未侦听时隙以及资源池中配置的资源预留周期集合中包括的每一种资源预留周期，或所述资源预留周期集合的子集中包括的每一种资源预留周期，确定所述未侦听时隙对应的所述Q个时隙。
在一些实施例中，所述未侦听时隙对应的Q个时隙为从所述未侦听时隙开始，以所述资源预留周期为间隔的Q个时隙。
在一些实施例中，Q等于1或2或
Figure PCTCN2022095761-appb-000007
或
Figure PCTCN2022095761-appb-000008
Prx为资源预留周期，Tscal根据资源选择窗或终端设备确定的候选时隙确定。
在一些实施例中，所述候选资源为候选资源集合中包括的任意一个资源，所述候选资源集合为资源选择窗内的可用资源构成的集合，或为终端设备确定的候选时隙内的资源构成的集合。
在一些实施例中，所述候选资源对应的资源包括：与所述候选资源频域位置相同，时域位置以终端设备的资源预留周期为间隔的一系列资源。
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。
在一些实施例中，处理器1301，用于确定未侦听时隙对应的Q个时隙，Q为正整数；若所述Q个时隙内一个或多个资源块集合对应的资源，与候选资源或所述候选资源对应的资源重叠，则排除所述候选资源。
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，用于实现上述资源排除方法。
本申请实施例还提供了一种计算机程序产品或计算机程序，所述计算机程序产品或计算机程序包括计算机指令，所述计算机指令存储在计算机可读存储介质中，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 (44)

  1. 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：
    确定未侦听时隙对应的Q个时隙，Q为正整数；
    若所述Q个时隙内一个或多个资源块集合对应的资源，与候选资源或所述候选资源对应的资源重叠，则排除所述候选资源。
  2. 根据权利要求1所述的方法，其特征在于，所述一个或多个资源块集合，包括以下至少之一：
    所述终端设备进行传输所对应的资源块集合；
    所述终端设备随机选择的资源块集合；
    所述终端设备根据信道监听确定的资源块集合；
    所述终端设备根据信道测量确定的资源块集合。
  3. 根据权利要求2所述的方法，其特征在于，所述终端设备进行传输所对应的资源块集合，包括：所述终端设备在所述未侦听时隙内进行传输所对应的资源块集合。
  4. 根据权利要求2或3所述的方法，其特征在于，所述终端设备随机选择的资源块集合，包括：所述终端设备在资源池包括的P个资源块集合中随机选择的U个资源块集合，P为正整数，U为小于或等于P的正整数。
  5. 根据权利要求4所述的方法，其特征在于，U由网络配置，或预配置，或取决于所述终端设备的实现，或由标准规定的预设值，或基于所述终端设备的测量结果确定。
  6. 根据权利要求2至5任一项所述的方法，其特征在于，所述终端设备根据信道监听确定的资源块集合，包括：资源池中，监听结果为空闲的资源块集合。
  7. 根据权利要求6所述的方法，其特征在于，所述终端设备根据信道监听确定的资源块集合，不包括：所述资源池中，监听结果为忙碌的资源块集合。
  8. 根据权利要求6或7所述的方法，其特征在于，所述方法还包括：
    在所述未侦听时隙前在所述资源池包括的资源块集合上进行信道监听，得到相应的监听结果。
  9. 根据权利要求2至8任一项所述的方法，其特征在于，所述终端设备根据信道测量确定的资源块集合，包括：资源池中，测量结果满足第一条件的资源块集合。
  10. 根据权利要求9所述的方法，其特征在于，所述测量结果满足第一条件的资源块集合，包括以下至少之一：
    信道繁忙率CBR满足第二条件的资源块集合；
    参考信号接收功率RSSI满足第三条件的资源块集合。
  11. 根据权利要求10所述的方法，其特征在于，所述CBR满足第二条件的资源块集合，包括：
    CBR最大的T个资源块集合，T为正整数；
    或者，
    CBR大于或等于第一阈值的资源块集合。
  12. 根据权利要求10或11所述的方法，其特征在于，所述RSSI满足第三条件的资源块集合，包括：
    RSSI对应的比率最大的S个资源块集合，S为正整数；
    或者，
    RSSI对应的比率大于或等于第二阈值的资源块集合；
    其中，对于所述资源池包括的任意一个资源块集合，所述RSSI对应的比率是指所述资源块集合对应的资源单元中，所述终端设备测量得到的RSSI大于或等于门限值的资源单元数量，与所述资源块集合对应的资源单元总数量的比值。
  13. 根据权利要求12所述的方法，其特征在于，一个所述资源单元为一个子信道或一个梳齿资源块IRB。
  14. 根据权利要求9至13任一项所述的方法，其特征在于，所述方法还包括：
    在时间窗口内对所述资源池包括的资源块集合进行信道测量，得到相应的测量结果；
    其中，所述时间窗口位于目标时隙之前，所述目标时隙为高层触发底层进行候选资源集合上报的时隙，或为所述未侦听时隙，或根据第一个候选时隙确定。
  15. 根据权利要求1至14任一项所述的方法，其特征在于，所述确定未侦听时隙对应的Q个时隙，包括：
    根据所述未侦听时隙以及资源预留周期，确定所述未侦听时隙对应的Q个时隙。
  16. 根据权利要求15所述的方法，其特征在于，所述根据所述未侦听时隙以及资源预留周期，确定所述未侦听时隙对应的Q个时隙，包括：
    根据所述未侦听时隙以及资源池中配置的资源预留周期集合中包括的每一种资源预留周期，或所述资源预留周期集合的子集中包括的每一种资源预留周期，确定所述未侦听时隙对应的Q个时隙。
  17. 根据权利要求15或16所述的方法，其特征在于，所述未侦听时隙对应的Q个时隙为从所述未侦听时隙开始，以所述资源预留周期为间隔的Q个时隙。
  18. 根据权利要求15至17任一项所述的方法，其特征在于，Q等于1或2或
    Figure PCTCN2022095761-appb-100001
    或
    Figure PCTCN2022095761-appb-100002
    Prx为资源预留周期，Tscal根据资源选择窗或所述终端设备确定的候选时隙确定。
  19. 根据权利要求1至18任一项所述的方法，其特征在于，所述候选资源为候选资源集合中包括的任意一个资源，所述候选资源集合为资源选择窗内的可用资源构成的集合，或为所述终端设备确定的候选时隙内的资源构成的集合。
  20. 根据权利要求1至19任一项所述的方法，其特征在于，所述候选资源对应的资源包括：与所述候选资源频域位置相同，时域位置以所述终端设备的资源预留周期为间隔的一系列资源。
  21. 一种资源排除装置，其特征在于，所述装置包括：
    确定模块，用于确定未侦听时隙对应的Q个时隙，Q为正整数；
    排除模块，用于若所述Q个时隙内一个或多个资源块集合对应的资源，与候选资源或所述候选资源对应的资源重叠，则排除所述候选资源。
  22. 根据权利要求21所述的装置，其特征在于，所述一个或多个资源块集合，包括以下至少之一：
    终端设备进行传输所对应的资源块集合；
    所述终端设备随机选择的资源块集合；
    所述终端设备根据信道监听确定的资源块集合；
    所述终端设备根据信道测量确定的资源块集合。
  23. 根据权利要求22所述的装置，其特征在于，所述终端设备进行传输所对应的资源块集合，包括：所述终端设备在所述未侦听时隙内进行传输所对应的资源块集合。
  24. 根据权利要求22或23所述的装置，其特征在于，所述终端设备随机选择的资源块集合，包括：所述终端设备在资源池包括的P个资源块集合中随机选择的U个资源块集合，P为正整数，U为小于或等于P的正整数。
  25. 根据权利要求24所述的装置，其特征在于，U由网络配置，或预配置，或取决于所述终端设备的实现，或由标准规定的预设值，或基于所述终端设备的测量结果确定。
  26. 根据权利要求22至25任一项所述的装置，其特征在于，所述终端设备根据信道监听确定的资源块集合，包括：资源池中，监听结果为空闲的资源块集合。
  27. 根据权利要求26所述的装置，其特征在于，所述终端设备根据信道监听确定的资源块集合，不包括：所述资源池中，监听结果为忙碌的资源块集合。
  28. 根据权利要求26或27所述的装置，其特征在于，所述装置还包括：
    监听模块，用于在所述未侦听时隙前在所述资源池包括的资源块集合上进行信道监听，得到相应的监听结果。
  29. 根据权利要求22至28任一项所述的装置，其特征在于，所述终端设备根据信道测量确定的资源块集合，包括：资源池中，测量结果满足第一条件的资源块集合。
  30. 根据权利要求29所述的装置，其特征在于，所述测量结果满足第一条件的资源块集合，包括以下至少之一：
    信道繁忙率CBR满足第二条件的资源块集合；
    参考信号接收功率RSSI满足第三条件的资源块集合。
  31. 根据权利要求30所述的装置，其特征在于，所述CBR满足第二条件的资源块集合，包括：
    CBR最大的T个资源块集合，T为正整数；
    或者，
    CBR大于或等于第一阈值的资源块集合。
  32. 根据权利要求30或31所述的装置，其特征在于，所述RSSI满足第三条件的资源块集合，包括：
    RSSI对应的比率最大的S个资源块集合，S为正整数；
    或者，
    RSSI对应的比率大于或等于第二阈值的资源块集合；
    其中，对于所述资源池包括的任意一个资源块集合，所述RSSI对应的比率是指所述资源块集合对应的资源单元中，所述终端设备测量得到的RSSI大于或等于门限值的资源单元数量，与所述资源块集合对应的资源单元总数量的比值。
  33. 根据权利要求32所述的装置，其特征在于，一个所述资源单元为一个子信道或一个梳齿资源块IRB。
  34. 根据权利要求29至33任一项所述的装置，其特征在于，所述装置还包括：
    测量模块，用于在时间窗口内对所述资源池包括的资源块集合进行信道测量，得到相应的测量结果；
    其中，所述时间窗口位于目标时隙之前，所述目标时隙为高层触发底层进行候选资源集合上报的时隙，或为所述未侦听时隙，或根据第一个候选时隙确定。
  35. 根据权利要求21至34任一项所述的装置，其特征在于，
    所述确定模块，用于根据所述未侦听时隙以及资源预留周期，确定所述未侦听时隙对应的Q个时隙。
  36. 根据权利要求35所述的装置，其特征在于，
    所述确定模块，用于根据所述未侦听时隙以及资源池中配置的资源预留周期集合中包括的每一种资源预留周期，或所述资源预留周期集合的子集中包括的每一种资源预留周期，确定所述未侦听时隙对应的Q个时隙。
  37. 根据权利要求35或36所述的装置，其特征在于，所述未侦听时隙对应的Q个时隙为从所述未侦听时隙开始，以所述资源预留周期为间隔的Q个时隙。
  38. 根据权利要求35至37任一项所述的装置，其特征在于，Q等于1或2或
    Figure PCTCN2022095761-appb-100003
    或
    Figure PCTCN2022095761-appb-100004
    Prx为资源预留周期，Tscal根据资源选择窗或终端设备确定的候选时隙确定。
  39. 根据权利要求21至38任一项所述的装置，其特征在于，所述候选资源为候选资源集合中包括的任意一个资源，所述候选资源集合为资源选择窗内的可用资源构成的集合，或为终端设备确定的候选时隙内的资源构成的集合。
  40. 根据权利要求21至39任一项所述的装置，其特征在于，所述候选资源对应的资源包括：与所述候选资源频域位置相同，时域位置以终端设备的资源预留周期为间隔的一系列资源。
  41. 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20任一项所述的方法。
  42. 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20任一项所述的方法。
  43. 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20任一项所述的方法。
  44. 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20任一项所述的方法。
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CN109565793A (zh) * 2017-10-31 2019-04-02 Oppo广东移动通信有限公司 一种终端选择资源的方法及装置、计算机存储介质
WO2021258301A1 (zh) * 2020-06-23 2021-12-30 Oppo广东移动通信有限公司 资源排除方法、装置、终端设备及存储介质
WO2022140934A1 (zh) * 2020-12-28 2022-07-07 Oppo广东移动通信有限公司 无线通信的方法和终端设备
WO2023279536A1 (zh) * 2021-07-05 2023-01-12 Oppo广东移动通信有限公司 资源重选方法、装置、设备及存储介质

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CN109565793A (zh) * 2017-10-31 2019-04-02 Oppo广东移动通信有限公司 一种终端选择资源的方法及装置、计算机存储介质
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