WO2024027558A1 - 侧链路信道占用时间cot共享方法及终端 - Google Patents

侧链路信道占用时间cot共享方法及终端 Download PDF

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Publication number
WO2024027558A1
WO2024027558A1 PCT/CN2023/109616 CN2023109616W WO2024027558A1 WO 2024027558 A1 WO2024027558 A1 WO 2024027558A1 CN 2023109616 W CN2023109616 W CN 2023109616W WO 2024027558 A1 WO2024027558 A1 WO 2024027558A1
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Prior art keywords
terminal
resources
indication signaling
resource
transmission
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English (en)
French (fr)
Inventor
王欢
纪子超
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access

Definitions

  • the present application belongs to the field of communication technology, and specifically relates to a side-link channel occupancy time COT sharing method and terminal.
  • LBT Listen Before Talk
  • COT Channel Occupancy Time
  • Terminals User Equipment, UE
  • COT sharing can be used for transmission resources that a UE can recommend to another UE in order to make it easier for the other UE to access the channel.
  • the NR sidelink resource selection enhancement scheme there is a minimum time interval limit between the transmission resources of the indication signaling and the recommended resources.
  • the time interval from the indication signaling transmission to the recommended resources is The minimum duration has reached 6ms. Since the length of COT does not exceed 10ms (the typical COT length is less than 6ms), this limits the scope of use of COT sharing.
  • the resource selection for indicating signaling transmission resources is mode 2 resource selection. The interval between the indicated signaling transmission resources and the recommended resources may be much larger than the minimum time interval, which may cause the COT sharing indication to fail.
  • the embodiments of this application provide a side-link COT sharing method and terminal, which can solve the problem in related technologies that the scope of use of COT sharing is limited due to the minimum time interval limit between the transmission resources of the instruction signaling and the recommended resources.
  • a side link COT sharing is provided and applied to the first terminal.
  • the method includes:
  • the first terminal sends indication signaling to the second terminal, the indication signaling is used to indicate recommended resources, and the transmission resources of the indication signaling and the recommended resources are in the same COT.
  • a side-link COT sharing is provided and applied to the second terminal.
  • the method includes:
  • the second terminal receives the indication signaling sent by the first terminal, the indication signaling is used to indicate recommended resources, and the transmission resources of the indication signaling and the recommended resources are in the same COT.
  • a side-link COT sharing device which device includes:
  • the first sending unit is configured to send indication signaling to the second terminal.
  • the indication signaling is used to indicate recommended resources.
  • the transmission resources of the indication signaling and the recommended resources are in the same COT.
  • a side-link COT sharing device which device includes:
  • the first receiving unit is configured to receive indication signaling sent by the first terminal, where the indication signaling is used to indicate recommended resources, and the transmission resources of the indication signaling and the recommended resources are in the same COT.
  • a terminal in a fifth aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor, the following implementations are implemented: The steps of the side-link COT sharing method described in one aspect.
  • a terminal including a processor and a communication interface, wherein the communication interface is used to receive indication signaling sent by the first terminal, the indication signaling is used to indicate recommended resources, and the indication signaling The transmission resource and the recommended resource are in the same COT.
  • a terminal in a seventh aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor, the following implementations are implemented: The steps of the side-link COT sharing method described in the second aspect.
  • a terminal including a processor and a communication interface, wherein the communication interface is used to receive indication signaling sent by the first terminal, the indication signaling is used to indicate recommended resources, and the indication signaling The transmission resource and the recommended resource are in the same COT.
  • a communication system including: a first terminal and a second terminal, where the first terminal can be used to perform:
  • the second terminal may be used to perform the steps of the side-link COT sharing method described in the second aspect.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the side-link COT sharing method as described in the first aspect is implemented. Steps, or steps for implementing the side-link COT sharing method described in the second aspect.
  • a chip in an eleventh aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the method described in the first aspect.
  • Side-link COT sharing method or implement the side-link COT sharing method as described in the second aspect.
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement as described in the first aspect the steps of the side-link COT sharing method, or implement the side-link COT sharing method as described in the second aspect.
  • the terminal can better implement SL.
  • COT sharing expands the usage scenarios of COT sharing.
  • Figure 1 is a block diagram of a wireless communication system applicable to the embodiment of the present application.
  • Figure 2 is a schematic diagram of the minimum time interval between transmission resources and recommended resources for indication signaling in related technologies
  • Figure 3 is one of the flow diagrams of the side-link COT sharing method provided by the embodiment of the present application.
  • Figure 4 is a schematic diagram of resource selection provided by the embodiment of the present application.
  • Figure 5 is a second schematic flowchart of the side-link COT sharing method provided by the embodiment of the present application.
  • Figure 6 is one of the structural schematic diagrams of the side-link COT sharing device provided by the embodiment of the present application.
  • Figure 7 is the second structural schematic diagram of the side-link COT sharing device provided by the embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 9 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and “second” are distinguished objects It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the related objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR New Radio
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12.
  • the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC ultra-mobile personal computer
  • UMPC mobile Internet device
  • MID mobile Internet Device
  • AR augmented reality
  • VR virtual reality
  • robots wearable devices
  • VUE vehicle-mounted equipment
  • PUE pedestrian terminal
  • smart home home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.
  • game consoles personal computers, PC
  • Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, Smart anklets, etc.), smart wristbands, smart clothing, etc.
  • the network side device 12 may include an access network device or a core network device, where the access network device 12 may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or Wireless access network unit.
  • the access network device 12 may include a base station, a WLAN access point or a WiFi node, etc.
  • the base station may be called a Node B, an evolved Node B (eNB), an access point, a Base Transceiver Station (BTS), a radio Base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B, Home Evolved Node B, Transmitting Receiving Point (TRP) or all
  • eNB evolved Node B
  • BTS Base Transceiver Station
  • BSS Basic Service Set
  • ESS Extended Service Set
  • Home Node B Home Evolved Node B
  • TRP Transmitting Receiving Point
  • Core network equipment may include but is not limited to at least one of the following: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Service Discovery function (Edge Application Server Discovery Function, EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), centralized network configuration ( Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (Local NEF, or L-NEF), Binding Support Function (Binding Support Function, BSF), application function (Application Function, AF), etc.
  • MME mobility management entities
  • AMF Access and Mobility Management Function
  • SMF Session Management Function
  • UPF User Plane Function
  • PCF Policy Control Function
  • NR SL resource allocation methods There are two NR SL resource allocation methods, one is based on base station scheduling (mode 1), and the other is based on UE autonomous resource selection (mode 2).
  • mode 1 base station scheduling
  • mode 2 UE autonomous resource selection
  • the sidelink resources used by the UE for data transmission are determined by the base station, and the sending end UE (TX UE) is notified through downlink signaling;
  • TX UE sending end UE
  • the UE is configured in the (pre)
  • the available transmission resources are selected from the resource pool.
  • the UE first performs channel monitoring before resource selection, selects a resource set with less interference based on the channel monitoring results, and then randomly selects resources for transmission from the resource set.
  • the specific working method is as follows: 1) After the resource selection is triggered, the TX UE first determines the resource selection window at the physical PHY layer. The lower boundary of the resource selection window is at the T1 time after the resource selection is triggered, and the upper boundary of the resource selection is At the T2 time after triggering, T1 is selected within a [T1_min, T1_max] range by the UE implementation method, and T2 is the packet delay budget (packet) transmitted in its Transport Block (TB) by the UE implementation method. delay budget, PDB), T2 is not earlier than T1.
  • the PHY layer Before the UE selects resources, the PHY layer needs to determine the candidate resource set (candidate resource set) for resource selection, in which the candidate resource sub-channel The number is determined by the Media Access Control (MAC) layer, and the UE is based on the estimated reference signal received power (RSRP) measurement value on the resource within the resource selection window (for example, by monitoring the physical side link Control channel (Physical Sidelink Control Channel, PSCCH)/Physical Sidelink Shared Channel (Physical Sidelink Shared Channel, PSSCH) estimate) is compared with the corresponding RSRP threshold (threshold). If RSRP is higher than RSRP threshold, then the resource Resource exclusion is performed and cannot be included in the alternative resource collection.
  • RSRP reference signal received power
  • the remaining resources in the resource selection window form a set of alternative resources.
  • the resources in the alternative resource set must account for no less than x% of the resources in the resource selection window. If it is less than x%, the RSRP threshold needs to be increased according to the step value (3dB), and then the resource exclusion operation is performed. , until no less than x% of the resources can be selected.
  • the RSRP comparison is related to the priority of the TB to be transmitted and the priority value demodulated on the PSCCH, and the specific process will not be described again.
  • the PHY layer reports the alternative resource set to the MAC layer.
  • the MAC layer randomly selects transmission resources from the alternative resource set. The number of selected resources is determined according to the decision of the MAC layer.
  • UE-A sends resource recommendation information to UE-B, and UE-B uses the resource recommendation information to select resources.
  • UE-A can recommend resources to UE-B based on the request signaling sent by UE-B, or recommend resources to UE-B based on the UE implementation.
  • the resource recommendation information sent by UE-A to UE-B includes resources that UE-B is inclined to use (preferred resources) and undesirable resources.
  • resources that are preferred to be used by UE-B There are two types of resources that are preferred to be used by UE-B (non-preferred resources).
  • UE-B When UE-B receives the preferred resource indication information, UE-B has two resource selection behaviors, namely 1) UE-B can directly select its transmission resources from the preferred resource, or 2) UE-B combines its own sensing The result is used with the preferred resource for resource selection; when UE-B receives the non-preferred resource, UE-B combines its own sensing result with the non-preferred resource for resource selection.
  • UE-A When UE-A recommends resources to UE-B, UE-A first selects preferred resource/non-preferred resource, and then selects the transmission resource for indication signaling (Inter-UE coordination information/IUC transmission resource).
  • the indication signaling is used Indicates preferred resource/non-preferred resource. Among them, a minimum time interval is agreed between the transmission resource of the instruction signaling and the preferred resource/non-preferred resource, that is, Tproc,0+Tproc,1+Tproc,2.
  • Tproc,0 (refer to Table 8.1.4-1TS 38.214) is the sensing result collection time
  • Tproc,1 (refer to Table 8.1.4-2TS 38.214) is the resource selection preparation and PSCCH/PSSCH transmission preparation time
  • Tproc,2 is the instruction signal The upper limit of the demodulation time of the order.
  • the indication signaling is 2nd SCI
  • Tproc,2 Tproc,0; when the indication signaling is the Media Access Control Layer Control Unit (MAC CE)
  • Tproc,2 Tproc,0+Tproc, 1.
  • the time interval limit can be guaranteed by adjusting the resource selection window, as shown in Figure 2. If the minimum time interval between the signaling transmission resource and the preferred resource/non-preferred resource does not meet, UE-B may not consider the preferred resource/non-preferred resource that does not meet the time interval limit when selecting resources.
  • unlicensed frequency bands can operate in the 5GHz, 37GHz and 60GHz frequency bands. Since unlicensed frequency bands are shared by multiple technologies (RATs), such as WiFi, radar, LTE-LAA, etc., in some countries or regions, the use of unlicensed frequency bands must comply with regulations to ensure that all devices can use this resource fairly. , such as LBT, maximum channel occupancy time (MCOT) and other rules. When the transmission node needs to send information, it needs to perform LBT first, and performs power detection (ED) on the surrounding nodes.
  • RATs such as WiFi, radar, LTE-LAA, etc.
  • the channel When the detected power is lower than a threshold, the channel is considered idle, and the transmission node can to send. Otherwise, the channel is considered busy and the transmitting node cannot send.
  • the transmission node can be a base station, UE, WiFi AP, etc. After the transmission node starts transmitting, the occupied channel time COT cannot exceed MCOT.
  • the transmission node In addition, according to the occupied channel bandwidth (OCB) regulations, in the unlicensed frequency band, the transmission node must occupy at least 70% (60GHz) or 80% (5GHz) of the entire frequency band during each transmission. .
  • Type1LBT is a channel listening mechanism based on back-off. When the transmission node detects that the channel is busy, it backs off and continues listening until it detects that the channel is empty.
  • Type2C means that the sending node does not perform LBT, that is, no LBT or immediate transmission.
  • Type2A and Type2B LBT are one-shot LBT, that is, the node performs an LBT before transmission. If the channel is empty, it will transmit, and if the channel is busy, it will not transmit. The difference is that Type2A performs LBT within 25us, which is suitable for sharing COT when the gap between the two transmissions is greater than or equal to 25us.
  • Type2B performs LBT within 16us, which is suitable for sharing COT when the gap between the two transmissions is equal to 16us.
  • Type2LBT which is suitable for LAA/eLAA/FeLAA.
  • the gap between the two transmissions is greater than or equal to 25us, eNB and UE can use Type 2LBT.
  • the types of LBT are Type1, Type2 and Type3.
  • Type1 is a channel listening mechanism based on fallback
  • Type2 is one-shot LBT, which performs LBT of 5us within 8us
  • Type3 does not perform LBT.
  • the base station When the base station initiates a COT, in addition to using the resources in the COT for downlink transmission, it can also share the resources in the COT with the UE for uplink transmission.
  • the channel access methods that the UE can use are Type 2A LBT, Type 2B LBT or Type 2C LBT.
  • the UE uses Type1LBT to initiate a COT, in addition to using the resources in the COT for uplink transmission, it can also share the resources in the COT with the base station for downlink transmission.
  • the base station sharing the COT initiated by the UE includes two situations: one situation is the base station sharing the COT of the scheduled PUSCH; the other situation is the base station sharing the COT of the scheduling authorization-free PUSCH.
  • FIG 3 is one of the flow diagrams of the side-link COT sharing method provided by the embodiment of the present application. As shown in Figure 3, the method includes:
  • Step 300 The first terminal sends indication signaling to the second terminal, where the indication signaling is used to indicate recommended resources.
  • the recommended resource may be a transmission resource recommended to the second terminal, a shared COT indicated to the second terminal, a moment or time unit or time period to perform type 2LBT, etc. indicated to the second terminal.
  • the type 2LBT includes one or more of type 2A LBT, type 2B LBT and type 2C LBT.
  • the transmission resources of the indication signaling and the recommended resources are in the same COT.
  • the first terminal sends indication signaling to the second terminal.
  • the indication signaling is used to indicate recommended resources.
  • the transmission resources of the indication signaling and the recommended resources are in the same COT, which allows the terminal to update easily realize SL COT sharing and expand the usage scenarios of COT sharing.
  • the embodiment of the present application can enable the terminal to better realize SL COT sharing and expand the usage scenarios of COT sharing by shortening the time interval between the transmission resources of the instruction signaling and the recommended resources.
  • the location of the transmission resource of the instruction signaling includes: the end position of the slot where the instruction signaling is located, the end position of the PSSCH/PSSCH transmission where the instruction signaling is located, etc.
  • the location of the recommended resource includes: the starting location of the recommended transmission resource, the resource location, starting location and/or ending location of the indicated shared COT, etc.
  • the time interval or the length of the minimum time interval between the transmission resources of the indication signaling and the recommended resources includes at least one of the following:
  • the length of the time interval or the minimum time interval is associated with the processing capability level of the terminal.
  • UEs are divided into high-processing-capability UEs and low-processing-capability UEs according to their processing capabilities.
  • a high-processing capability UE requires a shorter time interval.
  • the length of the time interval or the minimum time interval is associated with the subcarrier spacing SCS.
  • the length of the time interval can be defined using finer time granularity, which can shorten the length of the time interval relatively.
  • the length of the time interval or the minimum time interval is agreed, configured or preconfigured by a protocol, or at least one of the components of the length of the time interval or the minimum time interval is agreed, configured or preset by the protocol. configuration.
  • each component may be an upper limit of time required for the second terminal to demodulate the indication signaling, a time limit for the second terminal to collect sensing results and/or an upper limit of preparation for resource selection, or the second terminal preparation side
  • the first terminal sending the instruction signaling to the second terminal includes: the first terminal uses the side link control information format SCI format n to send the instruction signaling to the second terminal.
  • SCI format n includes 1st stage SCI or 2nd stage SCI.
  • SL control information is carried by two levels of SCI, 1st stage SCI and 2nd stage SCI. Among them, 1st stage SCI is mapped to PSCCH, and 2nd stage SCI is mapped to PSSCH.
  • the first terminal uses SCI format n to send indication signaling to the second terminal to indicate recommended resources, thereby shortening the time required for the second terminal to demodulate the indication signaling or the length of the time interval.
  • the UE can send multiple/two 1st stage SCIs at the same time (for example, sending in different sub-channel/interlace/RB set/band), one of which is SCI format n.
  • the advantage is to ensure the demodulation reliability of different types of SCI.
  • the ability to demodulate SCI format n is optional.
  • the method further includes: the first terminal and the second terminal negotiate to determine the ability of the second terminal to demodulate the SCI format n.
  • the first terminal and the second terminal negotiate to determine the second terminal's ability to demodulate SCI format n.
  • the second terminal is not forced to have the ability to demodulate SCI format n, which can reduce the complexity of terminal implementation.
  • the ability to demodulate the SCI format n is configured or pre-configured per resource set (per pool/per BWP/per band/per CC/per RB set).
  • the SCI format n is transmitted together with the transmission block TB, and/or the corresponding PSCCH/PSSCH resource selection is triggered by the Padding TB to transmit the SCI format n.
  • SCI format n can be transmitted together with TB. If there is no TB transmission, corresponding PSCCH/PSSCH resource selection is triggered by Padding TB to transmit the SCI format n.
  • the time and sum of the sensing results collected by the second terminal is a preset value.
  • the second terminal directly selects transmission resources from the resources indicated by the indication signaling for SL transmission after demodulating the indication signaling, the second terminal prepares sensing results and preparation resources.
  • the selected time can be omitted or reduced.
  • the time for the second terminal to collect sensing results and the time for preparation of resource selection are preset values, for example, Tproc,0, Tproc,1, N symbol, 0ms, etc.
  • the second terminal when the second terminal demodulates the indication signaling and directly selects transmission resources for SL transmission from the resources indicated by the indication signaling, the second terminal collects the time and resources of the sensing results.
  • the selected preparation time and the time required to prepare SL PSCCH/PSSCH i.e. Tproc,0+Tproc,1 are preset values (for example, shortened to the time it takes for the UE to prepare for PSCCH/PSSCH transmission, etc.).
  • the method further includes: the first terminal and the second terminal negotiating whether the second terminal can directly select transmission resources for SL transmission from the resources indicated by the indication signaling.
  • the negotiation here may be a one-way notification or a two-way negotiation.
  • the first terminal and the second terminal negotiate whether the second terminal can directly select transmission resources for SL transmission from the resources indicated by the indication signaling. , so that the first terminal determines how to determine recommended resources, and the second terminal determines how to select resources.
  • whether the second terminal can directly select transmission resources for SL transmission from the resources indicated by the indication signaling is configured according to the resource set (per pool/per BWP/per band/per CC/per RB set) or preconfigured.
  • the upper limit of time required for the second terminal to prepare the side link SL physical side link control channel PSCCH/PSSCH satisfies one of the following:
  • the calculation method of the upper limit of the first PUSCH preparation time refers to TS38.214 6.4, in which the d value can be set to the default value, including the d value which can be 0.
  • gNB When gNB schedules PUSCH, it will determine the time interval between PDCCH and PUSCH based on the UE's PUSCH preparation time.
  • PUSCH preparation time is determined based on at least the preset N2 value and d value (d value includes d_2, d_2,1 and d_2,2).
  • d value includes d_2, d_2,1 and d_2,2.
  • the N2 value for high-performance UE and low-performance UE is as shown in Table 1 and Table 2 below respectively:
  • the time for the second terminal to prepare the TB can be specified, so that the second terminal's PSCCH/PSSCH preparation time can be further shortened (for example, the second terminal prepares the TB before decoding the indication information, and after the second terminal decodes the resource indication information of the first terminal) , TB can be directly mapped to physical resources).
  • the time when the second terminal sends a request to the first terminal is defined as the time when the second terminal prepares the TB.
  • the time when the second terminal receives feedback information from the first terminal may also be defined as the time for the second terminal to prepare the TB.
  • the first terminal sends a signaling to the second terminal to instruct the second terminal to prepare the TB, and the second terminal demodulates the signaling and prepares the TB.
  • the first terminal or the second terminal when the first condition is met, sends indication signaling or performs information demodulation according to the time interval or the minimum time interval;
  • the first condition includes at least one of the following:
  • the first terminal or the second terminal transmits on an unlicensed spectrum
  • the second terminal performs sharing-based COT transmission, and the first terminal shares COT with the second terminal;
  • the first terminal uses the side link control information SCI format n to send indication signaling to the second terminal;
  • the second terminal directly selects transmission resources from the resources indicated by the indication signaling to perform SL transmission;
  • the first terminal negotiates with the second terminal to send indication signaling or perform information demodulation according to the time interval or the minimum time interval;
  • UE-A i.e., the first terminal
  • UE-B the second terminal
  • UE-B/UE-A transmits in the unlicensed spectrum (at least including transmission in the 5GHz unlicensed spectrum specified by regulations), and UE-B/UE-A performs information indication/information demodulation according to the above (minimum) time interval;
  • UE-B performs transmission based on COT sharing.
  • UE-A shares COT to UE-B
  • UE-B/UE-A performs information indication/information demodulation according to the above (minimum) time interval;
  • UE-A and UE-B negotiate whether to transmit based on COT sharing;
  • UE-A/UE-B When UE-A uses SCI format n to notify recommended resources, UE-A/UE-B performs information indication/information demodulation according to the above (minimum) time interval;
  • UE-B directly selects transmission resources from the resources indicated by the indication information, and UE-A/UE-B performs information indication/information demodulation according to the above (minimum) time interval;
  • UE-A/UE-B performs information indication/information demodulation according to the above (minimum) time interval, which is configured/preconfigured according to the resource set (per pool/per BWP/per band/per CC/per RB set).
  • the terminal can better realize SL COT sharing and expand the usage scenarios of COT sharing.
  • the method further includes:
  • the first terminal selects the recommended resource and the transmission resource of the indication signaling.
  • the first terminal selects recommended resources and transmission resources for indicating signaling.
  • the indication signaling can be transmitted on the same resource as the data, and selecting the transmission resource for the indication signaling can also be understood as selecting the corresponding data transmission resource.
  • the first terminal selects the recommended resources and the transmission resources of the indication signaling, including at least one of the following:
  • the first terminal selects multiple resources within the first COT length, some of the multiple resources are used to carry indication signaling, and some of the multiple resources are the recommended resources;
  • the first terminal selects multiple resources within the first COT length, including at least one of the following:
  • the medium access control MAC layer of the first terminal selects multiple resources in the same COT from the set of alternative resources;
  • the first resource you can select it randomly or according to preset rules.
  • resources in the same COT as other selected resources will be selected (preferably).
  • candidate resources are located in the same COT, then these candidate resources are (preferably) selected.
  • At least some of the alternative resources in the set of alternative resources reported by the physical PHY layer of the first terminal to the MAC layer are located in the same COT;
  • the PHY layer when the PHY layer excludes resources, it ensures that multiple candidate resources remain within a certain COT length (the number can be indicated by the MAC layer).
  • the PHY layer when the PHY layer excludes resources, it ensures that there are multiple alternative resources remaining within the COT length (the number can be indicated by the MAC layer).
  • the number of such COTs is greater than/not less than x, or the number of such COTs
  • the proportion of the total number of COTs in the resource selection window (as shown in Figure 4) is greater than/not less than x%.
  • Figure 4 is a schematic diagram of resource selection provided by an embodiment of the present application.
  • the transmission resource of the indication signaling is the first resource/resources located in the first COT;
  • the recommended resources are located after the transmission resources of the indication signaling, and the time interval between the transmission resources of the indication signaling and the recommended resources is greater than the minimum time interval.
  • the first terminal first selects the recommended resources, and then selects the transmission resources of the indication signaling, so that the transmission resources of the indication signaling and at least one recommended resource are both within the first COT and meet all requirements.
  • the first terminal first selects the recommended resource, and then selects the transmission resource for the indication signaling, including:
  • the MAC layer of the first terminal selects the first resource as the transmission resource for the indication signaling, and the first resource and the recommended resource are in the same COT.
  • the starting position of the resource selection window of the transmission resource of the indication signaling is the same as the first recommendation
  • the distance of the resources is less than the length of the first COT, wherein the first recommended resources include one of the following: all recommended resources, some recommended resources, at least one recommended resource, and the top N recommended resources.
  • the end position of the resource selection window of the transmission resource of the indication signaling is the same as the first recommendation
  • the distance of the resources is greater than the minimum time interval, wherein the first recommended resource includes one of the following: all recommended resources, some recommended resources, at least one recommended resource, and the top N recommended resources.
  • the first terminal first selects the transmission resource of the indication signaling, and then selects the recommended resource, so that the transmission resource of the indication signaling and at least one recommended resource are both within the first COT and meet all requirements.
  • the first terminal first selects the transmission resource for the indication signaling, and then selects the recommended resource, including:
  • the MAC layer of the first terminal selects the first resource as the recommended resource, and the first resource and the transmission resource of the indication signaling are in the same COT.
  • the end position of the resource selection window of the recommended resource is consistent with the transmission of the first indication signaling.
  • the distance of the resources is less than the length of the first COT, wherein the transmission resources of the first indication signaling include one of the following: transmission resources of all indication signaling, transmission resources of part of the indication signaling, at least one indication signaling transmission resources, the last N indicating signaling transmission resources.
  • the starting position of the resource selection window of the recommended resource is consistent with the transmission of the first indication signaling.
  • the distance of the resources is greater than the minimum time interval, wherein the transmission resources of the first indication signaling include one of the following: transmission resources of all indication signaling, transmission resources of part of the indication signaling, transmission of at least one indication signaling resources, the last N indicating signaling transmission resources.
  • the MAC layer simultaneously triggers the first terminal to select indication signaling transmission resources and recommended resources.
  • the first terminal determines the number of transmission resources and the number of recommended resources in the first COT.
  • the first terminal determines the number of transmission resources and the number of recommended resources in the first COT, including at least one of the following:
  • the first terminal determines the number of transmission resources and the number of recommended resources in the first COT according to the implementation of the first terminal;
  • the first terminal determines the number of transmission resources and the number of recommended resources in the first COT according to the TBS of the TB to be transmitted;
  • the first terminal determines the number of transmission resources in the first COT according to the first ratio configured by the system, and uses other resources in the first COT as the recommended resources;
  • the system configures a percentage of
  • the first terminal determines the number of recommended resources according to the second ratio configured by the system
  • the system configures a percentage Y%. Once LBT is successful for UE-A, the resources (minimum/maximum) shared by UE-A to other UEs account for Y%.
  • the first terminal adjusts the number of recommended resources according to the amount of data received from other terminals or according to the success rate of demodulating data from other terminals.
  • the first terminal adjusts the proportion of resources shared with other UEs according to the amount of data received from other terminals or according to the success rate of demodulating data from other terminals.
  • the length of the first COT is determined according to at least one of the following:
  • the notification information is used to notify the priority information or the COT length of the indication signaling.
  • the length of the first COT is determined based on priority information indicating signaling, where the priority information indicating signaling includes L1priority, PQI, CAPC, etc.
  • the priority information indicating the signaling is agreed upon or configured or pre-configured by the protocol.
  • the length of the first COT is determined based on notification information from the second terminal.
  • the second terminal notifies the first terminal of the transmission priority information, and the first terminal determines the length of the first COT accordingly.
  • the second terminal directly notifies the length of the first COT.
  • the first terminal can also independently determine the length of the first COT, and notify the second terminal of the first COT length or associated priority information.
  • the terminal can better implement SL.
  • COT sharing expands the usage scenarios of COT sharing, and the embodiment of the present application also provides the terminal to select the recommended resources and the transmission resources of the indication signaling based on the shortened time interval between the transmission resources of the indication signaling and the recommended resources. This method can make it easier for UE to indicate recommended transmission resources to other UEs in the form of COT sharing.
  • FIG. 5 is a second schematic flowchart of the side-link COT sharing method provided by an embodiment of the present application. As shown in Figure 5, the side link COT sharing method includes:
  • Step 500 The second terminal receives the indication signaling sent by the first terminal.
  • the indication signaling is used to indicate recommended resources.
  • the transmission resources of the indication signaling and the recommended resources are in the same COT.
  • the time interval or the length of the minimum time interval between the transmission resources of the indication signaling and the recommended resources includes at least one of the following:
  • the length of the time interval or the minimum time interval is associated with the processing capability level of the terminal.
  • the length of the time interval or the minimum time interval is associated with the subcarrier spacing SCS.
  • the length of the time interval or the minimum time interval is agreed, configured or preconfigured by a protocol, or at least one of the components of the length of the time interval or the minimum time interval is agreed, configured or preset by the protocol. configuration.
  • the second terminal receiving the instruction signaling sent by the first terminal includes: the second terminal receiving the instruction signaling sent by the first terminal using the side link control information format SCI format n.
  • the method further includes: the second terminal and the first terminal negotiate to determine the ability of the second terminal to demodulate the SCI format n.
  • the ability of the second terminal to demodulate the SCI format n is configured or pre-configured according to a resource set.
  • the SCI format n is transmitted together with the transmission block TB, and/or the corresponding PSCCH/PSSCH resource selection is triggered by the Padding TB to transmit the SCI format n.
  • the time and sum of the sensing results collected by the second terminal is a preset value.
  • the second terminal when the second terminal demodulates the indication signaling and directly selects transmission resources for SL transmission from the resources indicated by the indication signaling, the second terminal collects the time and resources of the sensing results.
  • the selected preparation time and the time required to prepare SL PSCCH/PSSCH are preset values.
  • the method further includes: the second terminal and the first terminal negotiating whether the second terminal can directly select transmission resources for SL transmission from the resources indicated by the indication signaling.
  • whether the second terminal can directly select transmission resources for SL transmission from the resources indicated by the indication signaling is configured or pre-configured according to the resource set.
  • the upper limit of time required for the second terminal to prepare the side link SL physical side link control channel PSCCH/PSSCH satisfies one of the following:
  • the upper limit of the first PUSCH preparation time is the same;
  • the sum of the upper limit of the time required for the second terminal to prepare the SL PSCCH/PSSCH and the upper limit of the time required for the second terminal to demodulate the indication signaling is the same as the upper limit of the first PUSCH preparation time;
  • the upper limit of the first PSSCH preparation time is the same;
  • the sum of the upper limit of the time required for the second terminal to prepare the SL PSCCH/PSSCH and the upper limit of the time required for the second terminal to demodulate the indication signaling is the same as the upper limit of the first PSSCH preparation time;
  • the upper limit of time required for the second terminal to prepare SL PSCCH/PSSCH is agreed upon or configured or pre-configured by the agreement;
  • the first terminal or the second terminal when the first condition is met, sends indication signaling or performs information demodulation according to the time interval or the minimum time interval;
  • the first condition includes at least one of the following:
  • the first terminal or the second terminal transmits on an unlicensed spectrum
  • the second terminal performs sharing-based COT transmission, and the first terminal shares COT with the second terminal;
  • the first terminal uses the side link control information SCI format n to send indication signaling to the second terminal;
  • the second terminal directly selects transmission resources from the resources indicated by the indication signaling to perform SL transmission;
  • the first terminal negotiates with the second terminal to send indication signaling or perform information demodulation according to the time interval or the minimum time interval;
  • the side-link COT sharing method on the second terminal side provided by this embodiment and the side-link COT sharing method on the first terminal side belong to the same inventive concept. Therefore, for the relevant concepts and descriptions in this embodiment, reference can be made to the aforementioned Chapter 1 The side link COT sharing method on the terminal side will not be described in detail here.
  • the terminal can better realize SL COT sharing and expand the usage scenarios of COT sharing.
  • the execution subject may be a side-link COT sharing device.
  • the side-link COT sharing device performing the side-link COT sharing method is used as an example to illustrate the side-link COT sharing device provided by the embodiment of the present application.
  • FIG 6 is one of the structural schematic diagrams of the side link COT sharing device provided by the embodiment of the present application. As shown in Figure 6, the side link COT sharing device 600 includes:
  • the first sending unit 610 is configured to send indication signaling to the second terminal.
  • the indication signaling is used to indicate recommended resources.
  • the transmission resources of the indication signaling and the recommended resources are in the same COT.
  • the time interval or the length of the minimum time interval between the transmission resources of the indication signaling and the recommended resources includes at least one of the following:
  • the length of the time interval or the minimum time interval is associated with the processing capability level of the terminal.
  • the length of the time interval or the minimum time interval is associated with the subcarrier spacing SCS.
  • the length of the time interval or the minimum time interval is agreed, configured or preconfigured by a protocol, or at least one of the components of the length of the time interval or the minimum time interval is agreed, configured or preset by the protocol. configuration.
  • the first terminal sending the instruction signaling to the second terminal includes: the first terminal uses the side link control information format SCI format n to send the instruction signaling to the second terminal.
  • the device also includes:
  • the first negotiation unit is used to negotiate with the second terminal to determine the second terminal's ability to demodulate the SCI format n.
  • the ability to demodulate the SCI format n is configured or pre-configured by resource set.
  • the SCI format n is transmitted together with the transmission block TB, and/or the corresponding PSCCH/PSSCH resource selection is triggered by the Padding TB to transmit the SCI format n.
  • the time and sum of the sensing results collected by the second terminal is a preset value.
  • the second terminal when the second terminal demodulates the indication signaling and directly selects transmission resources for SL transmission from the resources indicated by the indication signaling, the second terminal collects the time and resources of the sensing results.
  • the selected preparation time and the time required to prepare SL PSCCH/PSSCH are preset values.
  • the device also includes:
  • the second negotiation unit is configured to negotiate with the second terminal whether the second terminal can directly select transmission resources for SL transmission from the resources indicated by the indication signaling.
  • whether the second terminal can directly select transmission resources for SL transmission from the resources indicated by the indication signaling is configured or pre-configured according to the resource set.
  • the upper limit of time required for the second terminal to prepare the side link SL physical side link control channel PSCCH/PSSCH satisfies one of the following:
  • the upper limit of the first PUSCH preparation time is the same;
  • the sum of the upper limit of the time required for the second terminal to prepare the SL PSCCH/PSSCH and the upper limit of the time required for the second terminal to demodulate the indication signaling is the same as the upper limit of the first PUSCH preparation time;
  • the upper limit of the first PSSCH preparation time is the same;
  • the sum of the upper limit of the time required for the second terminal to prepare the SL PSCCH/PSSCH and the upper limit of the time required for the second terminal to demodulate the indication signaling is the same as the upper limit of the first PSSCH preparation time;
  • the upper limit of time required for the second terminal to prepare SL PSCCH/PSSCH is agreed upon or configured or pre-configured by the agreement;
  • the first terminal or the second terminal when the first condition is met, sends indication signaling or performs information demodulation according to the time interval or the minimum time interval;
  • the first condition includes at least one of the following:
  • the first terminal or the second terminal transmits on an unlicensed spectrum
  • the second terminal performs sharing-based COT transmission, and the first terminal shares COT with the second terminal;
  • the first terminal uses the side link control information SCI format n to send indication signaling to the second terminal;
  • the second terminal directly selects transmission resources from the resources indicated by the indication signaling to perform SL transmission;
  • the first terminal negotiates with the second terminal to send indication signaling or perform information demodulation according to the time interval or the minimum time interval;
  • the terminal can better realize SL COT sharing and expand the usage scenarios of COT sharing.
  • the device also includes:
  • a first selection unit configured to select the recommended resources and the transmission resources of the indication signaling
  • the selection of the recommended resources and the transmission resources of the indication signaling includes at least one of the following:
  • the first terminal selects multiple resources within the first COT length, a part of the multiple resources are used to carry indication signaling, and a part of the multiple resources are the recommended resources;
  • the first terminal first selects the recommended resource, and then selects the transmission resource of the indication signaling, so that the transmission resource of the indication signaling and at least one recommended resource are both within the first COT and satisfy the time Interval or minimum time interval requirements;
  • the first terminal first selects the transmission resource of the indication signaling, and then selects the recommended resource, so that the transmission resource of the indication signaling and at least one recommended resource are both within the first COT and satisfy the time Interval or minimum time interval requirements;
  • the first terminal determines the number of transmission resources and the number of recommended resources in the first COT.
  • the selection of multiple resources within the first COT length includes at least one of the following:
  • the medium access control MAC layer of the first terminal selects multiple resources in the same COT from the candidate resource set;
  • At least some of the candidate resources in the set of candidate resources reported by the physical PHY layer of the first terminal to the MAC layer are located in the same COT;
  • the PHY layer of the first terminal reports the alternative resource set to the MAC layer, it reports the alternative resources located in the same COT;
  • the transmission resource of the indication signaling is one/more resources located at the front of the first COT;
  • the recommended resources are located after the transmission resources of the indication signaling, and the time interval between the transmission resources of the indication signaling and the recommended resources is greater than the minimum time interval.
  • selecting the recommended resources first, and then selecting the transmission resources for the indication signaling includes:
  • the MAC layer of the first terminal selects the first resource as the transmission resource for the indication signaling, and the first resource and the recommended resource are in the same COT.
  • the starting position of the resource selection window of the transmission resource of the indication signaling is the same as the first recommendation
  • the distance of the resources is less than the length of the first COT, wherein the first recommended resources include one of the following: all recommended resources, some recommended resources, at least one recommended resource, and the top N recommended resources.
  • the end position of the resource selection window of the transmission resource of the indication signaling is the same as the first recommendation
  • the distance of the resources is greater than the minimum time interval, wherein the first recommended resource includes one of the following: all recommended resources, some recommended resources, at least one recommended resource, and the top N recommended resources.
  • the first terminal first selects the transmission resource for the indication signaling, and then selects the recommended resource, including:
  • the MAC layer of the first terminal selects the first resource as the recommended resource, and the first resource and the transmission resource of the indication signaling are in the same COT.
  • the starting position of the resource selection window of the recommended resource is consistent with the transmission of the first indication signaling.
  • the distance of the resources is greater than the minimum time interval, wherein the transmission resources of the first indication signaling include one of the following: transmission resources of all indication signaling, transmission resources of part of the indication signaling, transmission of at least one indication signaling resources, the last N indicating signaling transmission resources.
  • the end position of the resource selection window of the recommended resource is consistent with the transmission of the first indication signaling.
  • the distance of the resources is less than the length of the first COT, wherein the transmission resources of the first indication signaling include one of the following: transmission resources of all indication signaling, transmission resources of part of the indication signaling, at least one indication signaling transmission resources, the last N indicating signaling transmission resources.
  • the length of the first COT is determined according to at least one of the following:
  • the notification information is used to notify the priority information or the COT length of the indication signaling.
  • determining the number of transmission resources and the number of recommended resources in the first COT includes at least one of the following:
  • the number of recommended resources is adjusted according to the amount of data received from other terminals or according to the success rate of demodulating data from other terminals.
  • the indication signaling is shortened.
  • the time interval between the transmission resources of the indication signaling and the recommended resources can enable the terminal to better realize SL COT sharing and expand the usage scenarios of COT sharing, and the embodiment of the present application also provides the transmission of the shortened indication signaling.
  • the method for the terminal to select recommended resources and transmission resources for indicating signaling can make it easier for the UE to indicate recommended transmission resources to other UEs in the form of COT sharing.
  • the side-link COT sharing device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • the side-link COT sharing device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figures 3 to 4, and achieve the same technical effect. To avoid duplication, it will not be described again here.
  • FIG 7 is the second structural schematic diagram of the side-link COT sharing device provided by the embodiment of the present application. As shown in Figure 7, the side link COT sharing device 700 includes:
  • the first receiving unit 710 is configured to receive indication signaling sent by the first terminal, where the indication signaling is used to indicate recommended resources, and the transmission resources of the indication signaling and the recommended resources are in the same COT.
  • the time interval or the length of the minimum time interval between the transmission resources of the indication signaling and the recommended resources includes at least one of the following:
  • the length of the time interval or the minimum time interval is associated with the processing capability level of the terminal.
  • the length of the time interval or the minimum time interval is associated with the subcarrier spacing SCS.
  • the length of the time interval or the minimum time interval is agreed, configured or preconfigured by a protocol, or at least one of the components of the length of the time interval or the minimum time interval is agreed, configured or preset by the protocol. configuration.
  • the second terminal receiving the instruction signaling sent by the first terminal includes: the second terminal receiving the instruction signaling sent by the first terminal using the side link control information format SCI format n.
  • the device also includes:
  • the third negotiation unit is used to negotiate with the first terminal to determine the ability of the second terminal to demodulate the SCI format n.
  • the ability of the second terminal to demodulate the SCI format n is configured or pre-configured according to a resource set.
  • the SCI format n is transmitted together with the transmission block TB, and/or the corresponding PSCCH/PSSCH resource selection is triggered by the Padding TB to transmit the SCI format n.
  • the time and sum of the sensing results collected by the second terminal is a preset value.
  • the second terminal when the second terminal demodulates the indication signaling and directly selects transmission resources for SL transmission from the resources indicated by the indication signaling, the second terminal collects the time and resources of the sensing results.
  • the selected preparation time and the time required to prepare SL PSCCH/PSSCH are preset values.
  • the device also includes:
  • the fourth negotiation unit is configured to negotiate with the first terminal whether the second terminal can directly select transmission resources for SL transmission from the resources indicated by the indication signaling.
  • whether the second terminal can directly select transmission resources for SL transmission from the resources indicated by the indication signaling is configured or pre-configured according to the resource set.
  • the upper limit of time required for the second terminal to prepare the side link SL physical side link control channel PSCCH/PSSCH satisfies one of the following:
  • the upper limit of the first PUSCH preparation time is the same;
  • the sum of the upper limit of the time required for the second terminal to prepare the SL PSCCH/PSSCH and the upper limit of the time required for the second terminal to demodulate the indication signaling is the same as the upper limit of the first PUSCH preparation time;
  • the upper limit of the first PSSCH preparation time is the same;
  • the sum of the upper limit of the time required for the second terminal to prepare the SL PSCCH/PSSCH and the upper limit of the time required for the second terminal to demodulate the indication signaling is the same as the upper limit of the first PSSCH preparation time;
  • the upper limit of time required for the second terminal to prepare SL PSCCH/PSSCH is agreed upon or configured or pre-configured by the agreement;
  • the first terminal or the second terminal when the first condition is met, sends indication signaling or performs information demodulation according to the time interval or the minimum time interval;
  • the first condition includes at least one of the following:
  • the first terminal or the second terminal transmits on an unlicensed spectrum
  • the second terminal performs sharing-based COT transmission, and the first terminal shares COT with the second terminal;
  • the first terminal uses the side link control information SCI format n to send indication signaling to the second terminal;
  • the second terminal directly selects transmission resources from the resources indicated by the indication signaling to perform SL transmission;
  • the first terminal negotiates with the second terminal to send indication signaling or perform information demodulation according to the time interval or the minimum time interval;
  • the terminal can better implement SL.
  • COT sharing expands the usage scenarios of COT sharing.
  • the side-link COT sharing device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • the side-link COT sharing device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 5 and achieve the same technical effect. To avoid duplication, the details will not be described here.
  • this embodiment of the present application also provides a communication device 800, which includes a processor 801 and a memory 802.
  • the memory 802 stores programs or instructions that can be run on the processor 801, for example.
  • the communication device 800 is a terminal
  • the program or instruction is executed by the processor 801
  • the steps of the above side-link COT sharing method embodiment are implemented, and the same technical effect can be achieved. To avoid duplication, they will not be described again here.
  • An embodiment of the present application also provides a terminal, including a processor and a communication interface.
  • the communication interface is used to send indication signaling to a second terminal, where the indication signaling is used to indicate recommended resources.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • An embodiment of the present application also provides a terminal, including a processor and a communication interface.
  • the communication interface is used to receive indication signaling sent by the first terminal, where the indication signaling is used to indicate recommended resources.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 9 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 900 includes but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, a processor 910, etc. At least some parts.
  • the terminal 900 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 910 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in FIG. 9 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or may combine certain components, or arrange different components, which will not be described again here.
  • the input unit 904 may include a graphics processing unit (Graphics Processing Unit, GPU) 9041 and a microphone 9042.
  • the graphics processor 9041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras).
  • the display unit 906 may include a display panel 9061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072 .
  • Touch panel 9071 also known as touch screen.
  • the touch panel 9071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 9072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 901 after receiving downlink data from the network side device, the radio frequency unit 901 can transmit it to the processor 910 for processing; in addition, the radio frequency unit 901 can send uplink data to the network side device.
  • the radio frequency unit 901 includes but does not Limited to antennas, amplifiers, transceivers, couplers, low noise amplifiers, duplexers, etc.
  • Memory 909 may be used to store software programs or instructions as well as various data.
  • the memory 909 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc.
  • memory 909 may include volatile memory or non-volatile memory, or memory x09 may include both volatile and non-volatile memory.
  • non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM).
  • RAM Random Access Memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • Synch link DRAM synchronous link dynamic random access memory
  • SLDRAM direct memory bus
  • the processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 910.
  • the radio frequency unit 901 is configured to send indication signaling to the second terminal, where the indication signaling is used to indicate recommended resources.
  • the time interval or the length of the minimum time interval between the transmission resources of the indication signaling and the recommended resources includes at least one of the following:
  • the length of the time interval or the minimum time interval is associated with the processing capability level of the terminal.
  • the length of the time interval or the minimum time interval is associated with the subcarrier spacing SCS.
  • the length of the time interval or the minimum time interval is agreed, configured or preconfigured by a protocol, or at least one of the components of the length of the time interval or the minimum time interval is agreed, configured or preset by the protocol. configuration.
  • the radio frequency unit 901 is configured to send indication signaling to the second terminal using the side link control information format SCI format n.
  • the processor 910 is configured to negotiate with the second terminal to determine the second terminal's ability to demodulate the SCI format n.
  • the ability to demodulate the SCI format n is configured or pre-configured by resource set.
  • the SCI format n is transmitted together with the transmission block TB, and/or the corresponding PSCCH/PSSCH resource selection is triggered by the Padding TB to transmit the SCI format n.
  • the time and sum of the sensing results collected by the second terminal is a preset value.
  • the second terminal when the second terminal demodulates the indication signaling and directly selects transmission resources for SL transmission from the resources indicated by the indication signaling, the second terminal collects the time and resources of the sensing results.
  • the selected preparation time and the time required to prepare SL PSCCH/PSSCH are preset values.
  • processor 910 is also used to:
  • whether the second terminal can directly select transmission resources for SL transmission from the resources indicated by the indication signaling is configured or pre-configured according to the resource set.
  • the upper limit of time required for the second terminal to prepare the side link SL physical side link control channel PSCCH/PSSCH satisfies one of the following: the same as the upper limit of the first PUSCH preparation time; the second terminal prepares the SL
  • the sum of the upper limit of time required for PSCCH/PSSCH and the upper limit of time required for the second terminal to demodulate the indication signaling is the same as the upper limit of the first PUSCH preparation time; taking the upper limit of the first PUSCH preparation time as a reference, round up to the predetermined Assume that the time unit is the same as the upper limit of the first PSSCH preparation time; the upper limit of the time required by the second terminal to prepare SL PSCCH/PSSCH and the upper limit of time required by the second terminal to demodulate the indication signaling
  • the sum of the time upper limit is the same as the first PSSCH preparation time upper limit; taking the first PSSCH preparation time upper limit as a reference, round up to the preset time unit; the second terminal needs to prepare the SL PS
  • the upper limit is agreed upon in the agreement or configured or pre-configured; it is determined based on the time when the second terminal prepares the TB.
  • the first terminal or the second terminal when the first condition is met, sends indication signaling or performs information demodulation according to the time interval or the minimum time interval;
  • the first condition includes at least one of the following:
  • the first terminal or the second terminal transmits on an unlicensed spectrum
  • the second terminal performs sharing-based COT transmission, and the first terminal shares COT with the second terminal;
  • the first terminal uses the side link control information SCI format n to send indication signaling to the second terminal;
  • the second terminal directly selects transmission resources from the resources indicated by the indication signaling to perform SL transmission;
  • the first terminal negotiates with the second terminal to send indication signaling or perform information demodulation according to the time interval or the minimum time interval;
  • the terminal can better realize SL COT sharing and expand the usage scenarios of COT sharing.
  • the processor 910 is further configured to: select the recommended resources and the transmission resources of the indication signaling;
  • the selection of the recommended resources and the transmission resources of the indication signaling includes at least one of the following:
  • the first terminal selects multiple resources within the first COT length, a part of the multiple resources are used to carry indication signaling, and a part of the multiple resources are the recommended resources;
  • the first terminal first selects the recommended resource, and then selects the transmission resource of the indication signaling, so that the transmission resource of the indication signaling and at least one recommended resource are both within the first COT and satisfy the time Interval or minimum time interval requirements;
  • the first terminal first selects the transmission resource of the indication signaling, and then selects the recommended resource, so that the transmission resource of the indication signaling and at least one recommended resource are both within the first COT and satisfy the time Interval or minimum time interval requirements;
  • the first terminal determines the number of transmission resources and the number of recommended resources in the first COT.
  • the selection of multiple resources within the first COT length includes at least one of the following:
  • the medium access control MAC layer of the first terminal selects multiple resources in the same COT from the candidate resource set;
  • At least some of the candidate resources in the set of candidate resources reported by the physical PHY layer of the first terminal to the MAC layer are located in the same COT;
  • the PHY layer of the first terminal reports the alternative resource set to the MAC layer, it reports the alternative resources located in the same COT;
  • the transmission resource of the indication signaling is one/more resources located at the front of the first COT;
  • the recommended resources are located after the transmission resources of the indication signaling, and the time interval between the transmission resources of the indication signaling and the recommended resources is greater than the minimum time interval.
  • selecting the recommended resources first, and then selecting the transmission resources for the indication signaling includes:
  • the MAC layer of the first terminal selects the first resource as the transmission resource for the indication signaling, and the first resource and the recommended resource are in the same COT.
  • the starting position of the resource selection window of the transmission resource of the indication signaling is the same as the first recommendation
  • the distance of the resources is less than the length of the first COT, wherein the first recommended resources include one of the following: all recommended resources, some recommended resources, at least one recommended resource, and the top N recommended resources.
  • the end position of the resource selection window of the transmission resource of the indication signaling is the same as the first recommendation
  • the distance of the resources is greater than the minimum time interval, wherein the first recommended resource includes one of the following: all recommended resources, some recommended resources, at least one recommended resource, and the top N recommended resources.
  • selecting the transmission resource of the indication signaling first, and then selecting the recommended resource includes:
  • the MAC layer of the first terminal selects the first resource as the recommended resource, and the first resource and the transmission resource of the indication signaling are in the same COT.
  • the starting position of the resource selection window of the recommended resource is consistent with the transmission of the first indication signaling.
  • the distance of the resources is greater than the minimum time interval, wherein the transmission resources of the first indication signaling include one of the following: transmission resources of all indication signaling, transmission resources of part of the indication signaling, transmission of at least one indication signaling resources, the last N indicating signaling transmission resources.
  • the end position of the resource selection window of the recommended resource is consistent with the transmission of the first indication signaling.
  • the distance of the resources is less than the length of the first COT, wherein the transmission resources of the first indication signaling include one of the following: transmission resources of all indication signaling, transmission resources of part of the indication signaling, at least one indication signaling transmission resources, the last N indicating signaling transmission resources.
  • the length of the first COT is determined according to at least one of the following:
  • the notification information is used to notify the priority information or the COT length of the indication signaling.
  • determining the number of transmission resources and the number of recommended resources in the first COT includes at least one of the following:
  • the number of recommended resources is adjusted according to the amount of data received from other terminals or according to the success rate of demodulating data from other terminals.
  • the terminal can better implement SL.
  • COT sharing expands the usage scenarios of COT sharing, and the embodiment of the present application also provides the terminal to select the recommended resources and the transmission resources of the indication signaling based on the shortened time interval between the transmission resources of the indication signaling and the recommended resources. This method can make it easier for UE to indicate recommended transmission resources to other UEs in the form of COT sharing.
  • the radio frequency unit 901 is configured to receive indication signaling sent by the first terminal, where the indication signaling is used to indicate recommended resources.
  • the time interval or the length of the minimum time interval between the transmission resources of the indication signaling and the recommended resources includes at least one of the following:
  • the length of the time interval or the minimum time interval is associated with the processing capability level of the terminal.
  • the length of the time interval or the minimum time interval is associated with the subcarrier spacing SCS.
  • the length of the time interval or the minimum time interval is agreed, configured or preconfigured by a protocol, or at least one of the components of the length of the time interval or the minimum time interval is agreed, configured or preset by the protocol. configuration.
  • the radio frequency unit 901 is configured to receive indication signaling sent by the first terminal using the side link control information format SCI format n.
  • processor 910 is used for:
  • the ability of the second terminal to demodulate the SCI format n is configured or pre-configured according to a resource set.
  • the SCI format n is transmitted together with the transmission block TB, and/or the corresponding PSCCH/PSSCH resource selection is triggered by the Padding TB to transmit the SCI format n.
  • the time and sum of the sensing results collected by the second terminal is a preset value.
  • the second terminal when the second terminal demodulates the indication signaling and directly selects transmission resources for SL transmission from the resources indicated by the indication signaling, the second terminal collects the time and resources of the sensing results.
  • the selected preparation time and the time required to prepare SL PSCCH/PSSCH are preset values.
  • processor 910 is used for:
  • whether the second terminal can directly select transmission resources for SL transmission from the resources indicated by the indication signaling is configured or pre-configured according to the resource set.
  • the upper limit of the time required for the second terminal to prepare the side link SL physical side link control channel PSCCH/PSSCH Satisfies one of the following: the same as the first PUSCH preparation time upper limit; the sum of the upper time limit required by the second terminal to prepare the SL PSCCH/PSSCH and the upper limit of time required by the second terminal to demodulate the indication signaling and the first
  • the upper limit of the first PUSCH preparation time is the same; the first PUSCH preparation time upper limit is used as a reference, rounded up to the preset time unit; the same as the first PSSCH preparation time upper limit; the upper limit of the time required for the second terminal to prepare SL PSCCH/PSSCH
  • the sum of the upper limit of time required by the second terminal to demodulate the indication signaling is the same as the upper limit of the first PSSCH preparation time; using the upper limit of the first PSSCH preparation time as a reference, round up to the preset time unit; the second The sum of the upper limit of time required for the terminal to prepare the SL
  • the first terminal or the second terminal when the first condition is met, sends indication signaling or performs information demodulation according to the time interval or the minimum time interval;
  • the first condition includes at least one of the following: the first terminal or the second terminal transmits on an unlicensed spectrum; the second terminal performs sharing-based COT transmission, and the first terminal shares COT to the second terminal; the first terminal uses side link control information SCI format n to send indication signaling to the second terminal; the second terminal directly selects transmission resources from the resources indicated by the indication signaling.
  • SL transmission the first terminal negotiates with the second terminal to send instruction signaling or perform information demodulation according to the time interval or the minimum time interval; configure or pre-configure according to the resource set.
  • the terminal can better realize SL COT sharing and expand the usage scenarios of COT sharing.
  • Embodiments of the present application also provide a readable storage medium, with programs or instructions stored on the readable storage medium.
  • the program or instructions are executed by a processor, each process of the above side-link COT sharing method embodiment is implemented, and can achieve the same technical effect, so to avoid repetition, we will not repeat them here.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the above side-link COT sharing method.
  • Each process of the embodiment can achieve the same technical effect, so to avoid repetition, it will not be described again here.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above-mentioned side link COT sharing.
  • Each process of the method embodiment can achieve the same technical effect, so to avoid repetition, it will not be described again here.
  • An embodiment of the present application also provides a communication system, including: a first terminal and a second terminal.
  • the first terminal can be used to perform the steps of the side link COT sharing method as described above.
  • the second terminal can be used to Perform the steps of the side-link COT sharing method as described above.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation.
  • the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to related technologies.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk, CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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Abstract

本申请公开了一种侧链路信道占用时间COT共享方法及终端，属于通信技术领域，本申请实施例的侧链路信道占用时间COT共享方法包括：第一终端向第二终端发送指示信令，所述指示信令用于指示推荐资源，所述指示信令的传输资源和所述推荐资源处于同一个COT内。

Description

侧链路信道占用时间COT共享方法及终端
相关申请的交叉引用
本申请主张在2022年08月01日在中国提交申请号为202210917418.3的中国专利的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域，具体涉及一种侧链路信道占用时间COT共享方法及终端。
背景技术
在非授权频谱(unlicensed spectrum)上进行侧链路(sidelink，SL)传输前需要进行先听后说(Listen Before Talk，LBT)，如果设备间共享了信道占用时间(Channel Occupancy Time，COT)，使用共享COT的终端(User Equipment，UE)仅需要做较短的LBT或者不做LBT，这样可以提高设备接入信道的概率。COT共享(COT sharing)可以用于UE可以向另一个UE推荐的传输资源，以便使得所述另一个UE更容易接入信道。
但是，根据NR sidelink资源选择增强方案，指示信令的传输资源与推荐资源间存在最小时间间隔限制，对于15kHz子载波间隔((sub-carrier space，SCS)，从指示信令传输到推荐资源的最小时长达到了6ms，由于COT的长度最长不超过10ms(典型COT长度小于6ms)，这使得COT sharing的使用范围受到了限制。另外，指示信令传输资源的资源选择为mode 2资源选择，指示信令传输资源与推荐资源间的间隔可能远大于所述最小时间间隔，这可能导致COT sharing指示失败。
发明内容
本申请实施例提供一种侧链路COT共享方法及终端，能够解决相关技术中由于指示信令的传输资源与推荐资源间存在最小时间间隔限制，导致COT sharing的使用范围受到限制的问题。
第一方面，提供了一种侧链路COT共享，应用于第一终端，该方法包括：
第一终端向第二终端发送指示信令，所述指示信令用于指示推荐资源，所述指示信令的传输资源和所述推荐资源处于同一个COT内。
第二方面，提供了一种侧链路COT共享，应用于第二终端，该方法包括：
第二终端接收第一终端发送的指示信令，所述指示信令用于指示推荐资源，所述指示信令的传输资源和所述推荐资源处于同一个COT内。
第三方面，提供了一种侧链路COT共享装置，该装置包括：
第一发送单元，用于向第二终端发送指示信令，所述指示信令用于指示推荐资源，所述指示信令的传输资源和所述推荐资源处于同一个COT内。
第四方面，提供了一种侧链路COT共享装置，该装置包括：
第一接收单元，用于接收第一终端发送的指示信令，所述指示信令用于指示推荐资源，所述指示信令的传输资源和所述推荐资源处于同一个COT内。
第五方面，提供了一种终端，该终端包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的侧链路COT共享方法的步骤。
第六方面，提供了一种终端，包括处理器及通信接口，其中，所述通信接口用于接收第一终端发送的指示信令，所述指示信令用于指示推荐资源，所述指示信令的传输资源和所述推荐资源处于同一个COT内。
第七方面，提供了一种终端，该终端包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第二方面所述的侧链路COT共享方法的步骤。
第八方面，提供了一种终端，包括处理器及通信接口，其中，所述通信接口用于接收第一终端发送的指示信令，所述指示信令用于指示推荐资源，所述指示信令的传输资源和所述推荐资源处于同一个COT内。
第九方面，提供了一种通信系统，包括：第一终端及第二终端，所述第一终端可用于执行如 第一方面所述的侧链路COT共享方法的步骤，所述第二终端可用于执行如第二方面所述的侧链路COT共享方法的步骤。
第十方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的侧链路COT共享方法的步骤，或者实现如第二方面所述的侧链路COT共享方法的步骤。
第十一方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的侧链路COT共享方法，或实现如第二方面所述的侧链路COT共享方法。
第十二方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面所述的侧链路COT共享方法的步骤，或实现如第二方面所述的侧链路COT共享方法。
在本申请实施例中，通过使指示信令的传输资源和所述推荐资源处于同一个COT内，缩短指示信令的传输资源与推荐资源之间的时间间隔，可以使终端更好地实现SL COT共享，扩展COT共享的使用场景。
附图说明
图1为本申请实施例可应用的一种无线通信系统的框图；
图2为相关技术中指示信令的传输资源与推荐资源的最小时间间隔示意图；
图3为本申请实施例提供的侧链路COT共享方法的流程示意图之一；
图4为本申请实施例提供的资源选择的示意图；
图5为本申请实施例提供的侧链路COT共享方法的流程示意图之二；
图6为本申请实施例提供的侧链路COT共享装置的结构示意图之一；
图7为本申请实施例提供的侧链路COT共享装置的结构示意图之二；
图8为本申请实施例提供的通信设备的结构示意图；
图9为实现本申请实施例的一种终端的硬件结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、增强现实(augmented reality，AR)/虚拟现实(virtual reality，VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(VUE)、行人终端(PUE)、智能家居(具有无线通信功能的家居设备，如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer， PC)、柜员机或者自助机等终端侧设备，可穿戴式设备包括：智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是，在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备，其中，接入网设备12也可以称为无线接入网设备、无线接入网(Radio Access Network,RAN)、无线接入网功能或无线接入网单元。接入网设备12可以包括基站、WLAN接入点或WiFi节点等，基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例进行介绍，并不限定基站的具体类型。核心网设备可以包含但不限于如下至少一项：核心网节点、核心网功能、移动管理实体(Mobility Management Entity，MME)、接入移动管理功能(Access and Mobility Management Function，AMF)、会话管理功能(Session Management Function，SMF)、用户平面功能(User Plane Function，UPF)、策略控制功能(Policy Control Function，PCF)、策略与计费规则功能单元(Policy and Charging Rules Function，PCRF)、边缘应用服务发现功能(Edge Application Server Discovery Function，EASDF)、统一数据管理(Unified Data Management，UDM)，统一数据仓储(Unified Data Repository，UDR)、归属用户服务器(Home Subscriber Server，HSS)、集中式网络配置(Centralized network configuration，CNC)、网络存储功能(Network Repository Function，NRF)，网络开放功能(Network Exposure Function，NEF)、本地NEF(Local NEF，或L-NEF)、绑定支持功能(Binding Support Function，BSF)、应用功能(Application Function，AF)等。需要说明的是，在本申请实施例中仅以NR系统中的核心网设备为例进行介绍，并不限定核心网设备的具体类型。
下面对本申请涉及的相关内容进行介绍。
一、NR sidelink资源分配/选择
NR SL资源分配方式有两种，一种基于基站调度(mode 1)，另一种基于UE自主资源选择(mode 2)。对于基站调度的资源分配方式，UE用于数据传输的sidelink资源由基站决定，并通过下行信令通知发送端UE(TX UE)；对于UE自主选择的资源分配方式，UE在(预)配置的资源池中选择可用的传输资源，UE在资源选择之前先进行信道监听，根据信道监听结果选择出干扰较小的资源集合，再从所述资源集合中随机选择用于传输的资源。
对于mode 2，具体的工作方式如下：1)TX UE在资源选择被触发后，首先物理PHY层确定资源选择窗口，资源选择窗口的下边界在资源选择触发后的T1时间，资源选择的上边界在触发后的T2时间，其中T1是UE实现的方式在一个[T1_min,T1_max]范围内选择的，T2是UE实现的方式在其传输块(Transport Block，TB)传输的包时延预算(packet delay budget，PDB)内选择的值，T2不早于T1。2)UE在资源选择的之前，PHY层需要确定资源选择的备选资源集合(candidate resource set)，其中备选资源sub-channel的个数由媒介访问控制(Media Access Control，MAC)层确定，UE根据资源选择窗口内的资源上预估的参考信号接收功率(reference signal received power，RSRP)测量值(例如通过监听物理侧链路控制信道(Physical Sidelink Control Channel，PSCCH)/物理侧链路共享信道(Physical Sidelink Shared Channel，PSSCH)预估)与相应的RSRP门限(threshold)做对比，如果RSRP高于RSRP threhold，那么对该资源进行资源排除，不能纳入备选资源集合。进行资源排除后资源选择窗口内剩余的资源组成备选资源集合。备选资源集合中的资源在资源选择窗口中的资源的占比要不少于x％，如果少于x％，RSRP threshold需要按照步进值(3dB)进行增加，再进行所述资源排除操作，直到可以选出不少于所述x％的资源。另外，所述RSRP对比与待传输TB的优先级(priority)以及PSCCH上解调的priority值相关，具体过程不赘述。3)备选资源集合确定后，PHY层将备选资源集合上报到MAC层，MAC层随机在备选资源集合中选择传输资源，所选资源的个数根据MAC层的决策确定。
下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的侧链路COT共享方法及终端进行详细地说明。
二、NR sidelink资源选择增强方案
NR SL mode 2资源选择增强方案中引入终端间协调(inter-UE coordination)的概念。UE-A向UE-B发送资源推荐信息，UE-B利用资源推荐信息进行资源选择。其中，UE-A可以基于UE-B发送的request信令向UE-B推荐资源，或者基于UE实现向UE-B推荐资源。
UE-A向UE-B发送的资源推荐信息包括，倾向UE-B使用的资源(preferred resource)和不 倾向UE-B使用的资源(non-preferred resource)两种。UE-B收到preferred resource指示信息的时候，UE-B的资源选择行为有两种，即1)UE-B可以直接从preferred resource中选择其传输资源，或者2)UE-B结合自身的sensing结果和preferred resource进行资源选择；UE-B收到non-preferred resource的时候，UE-B结合自身的sensing结果和non-preferred resource进行资源选择。
UE-A向UE-B推荐资源时，UE-A首先选择preferred resource/non-preferred resource，再选择指示信令的传输资源(Inter-UE coordination information/IUC传输资源)，该指示信令用于指示preferred resource/non-preferred resource。其中，指示信令的传输资源和preferred resource/non-preferred resource间约定了最小时间间隔，即Tproc,0+Tproc,1+Tproc,2。Tproc,0(参考Table 8.1.4-1TS 38.214)为sensing结果收集时间，Tproc,1(参考Table 8.1.4-2TS 38.214)为资源选择准备和PSCCH/PSSCH传输准备时间，Tproc,2为指示信令的解调时间上限。当指示信令为2nd SCI时，Tproc,2＝Tproc,0；当指示信令为媒介访问控制层控制单元(Media Access Control Control Unit，MAC CE)时，Tproc,2＝Tproc,0+Tproc,1。UE-A在选择指示信令的传输资源时，通过资源选择窗口的调整，可以保证所述时间间隔限制，如图2所示。如果指示信令的传输资源和preferred resource/non-preferred resource间不满足最小时间间隔，UE-B在资源选择时，可以不考虑不满足时间间隔限制的preferred resource/non-preferred resource。
三、Sidelink在非授权频谱的技术介绍
对于SL-U(非授权频谱的sidelink)，需要在发送SL数据前，通过LBT获取信道。下面对LBT技术做简要的介绍：
在未来通信系统中，共享频谱例如非授权频段(unlicensed band)可以作为授权频段(licensed band)的补充帮助运营商对服务进行扩容。为了与NR部署保持一致并尽可能的最大化基于NR的非授权接入，非授权频段可以工作在5GHz，37GHz和60GHz频段。由于非授权频段由多种技术(RATs)共用，例如WiFi，雷达，LTE-LAA等，因此在某些国家或者区域，非授权频段在使用时必须符合regulation以保证所有设备可以公平的使用该资源，例如LBT，最大信道占用时间(maximum channel occupancy time，MCOT)等规则。当传输节点需要发送信息是，需要先做LBT时，对周围的节点进行功率检测(energy detection，ED)，当检测到的功率低于一个门限时，认为信道为空(idle)，传输节点可以进行发送。反之，则认为信道为忙，传输节点不能进行发送。传输节点可以是基站，UE，WiFi AP等等。传输节点开始传输后，占用的信道时间COT不能超过MCOT。此外，根据占用信道带宽(occupied channel bandwidth，OCB)规则(regulation)，在非授权频段上，传输节点在每次传输时要占用整个频带的至少70％(60GHz)或者80％(5GHz)的带宽。
在NRU中常用的LBT的类型(type)可以分为Type1，Type2A，Type2B和Type2C。Type1LBT是基于回退(back-off)的信道侦听机制，当传输节点侦听到信道为忙时，进行回退，继续做侦听，直到侦听到信道为空。Type2C是发送节点不做LBT，即no LBT或者立即传输(immediate transmission)。Type2A和Type2B LBT是one-shot LBT，即节点在传输前做一次LBT，信道为空则进行传输，信道为忙则不传输。区别是Type2A在25us内做LBT，适用于在共享COT时，两个传输之间的gap大于等于25us。而Type2B在16us内做LBT，适用于在共享COT时，两个传输之间的gap等于16us。此外，还有Type2LBT，适用于LAA/eLAA/FeLAA，当共享COT时，两个传输之间的gap大于等于25us，eNB和UE可以采用Type 2LBT。此外，在frequency range2-2中，LBT的类型有Type1，Type2和Type3。Type1是基于回退的信道侦听机制，Type2是one-shot LBT，在8us内做5us的LBT，Type3是不做LBT。
四、COT共享
1)基站侧的信道占用时间共享
当基站发起COT后，除了可以将该COT内的资源用于下行传输，还可以将该COT内的资源共享给UE进行上行传输。COT内的资源共享给UE进行上行传输时，UE可以使用的信道接入方式为Type 2A LBT，Type 2B LBT或Type 2C LBT。
2)UE侧的信道占用时间共享
当UE使用Type1LBT发起COT后，除了可以将该COT内的资源用于上行传输，还可以将该COT内的资源共享给基站进行下行传输。在NR-U系统中，基站共享UE发起的COT包括两种情况：一种情况是基站共享调度的PUSCH的COT；另一种情况是基站共享免调度授权的PUSCH的COT。
图3为本申请实施例提供的侧链路COT共享方法的流程示意图之一。如图3所示，该方法包括：
步骤300、第一终端向第二终端发送指示信令，所述指示信令用于指示推荐资源。
其中，推荐资源可以是向第二终端推荐的传输资源，向第二终端指示的共享COT，向第二终端指示执行type 2LBT的时刻或时间单元或时间段等。所述type 2LBT包括type 2A LBT,type 2B LBT和type 2C LBT中的一种或多种。
所述指示信令的传输资源和所述推荐资源处于同一个COT内。
在本申请实施例中，通过第一终端向第二终端发送指示信令，指示信令用于指示推荐资源，指示信令的传输资源和所述推荐资源处于同一个COT内，可以使终端更好地实现SL COT共享，扩展COT共享的使用场景。
可选地，本申请实施例通过缩短指示信令的传输资源与推荐资源之间的时间间隔，可以使终端更好地实现SL COT共享，扩展COT共享的使用场景。
需要说明的是，指令信令的传输资源所在的位置包括：指示信令所在的slot的结束位置，指示信令所在的PSSCH/PSSCH传输的结束位置等。
推荐资源所在的位置包括：推荐的传输资源的开始位置，指示的共享COT的资源位置、开始位置和/或结束位置等。
可选地，所述指示信令的传输资源与所述推荐资源之间的时间间隔或最小时间间隔的长度包括以下至少一项：
第二终端解调所述指示信令所需的时间上限；
第二终端收集感知结果的时间和/或资源选择的准备的时间上限；
第二终端准备侧链路SL物理侧链路控制信道PSCCH/物理侧链路共享信道PSSCH所需的时间上限。
可选地，所述时间间隔或最小时间间隔的长度与终端的处理能力等级相关联。例如，根据UE的处理能力分为高处理能力UE和低处理能力UE，高处理能力UE需要的时间间隔长度更小。
可选地，所述时间间隔或最小时间间隔的长度与子载波间隔SCS相关联。在高SCS的资源配置下，能够使用更精细的时间粒度定义时间间隔的长度，可以相对缩短时间间隔长度。
可选地，所述时间间隔或最小时间间隔的长度由协议约定、配置或预配置，或者所述时间间隔或最小时间间隔的长度的各组成部分中的至少一项由协议约定、配置或预配置。
此处，各组成部分可以是第二终端解调所述指示信令所需的时间上限、第二终端收集感知结果的时间和/或资源选择的准备的时间上限，或者，第二终端准备侧链路SL物理侧链路控制信道PSCCH/物理侧链路共享信道PSSCH所需的时间上限。
可选地，所述第一终端向第二终端发送指示信令包括：所述第一终端使用侧链路控制信息格式SCI format n向第二终端发送指示信令。
其中，SCI format n包括1st stage SCI或者2nd stage SCI。
SL控制信息由两级SCI携带，1st stage SCI和2nd stage SCI。其中，1st stage SCI映射到PSCCH，2nd stage SCI映射到PSSCH。
第一终端使用SCI format n向第二终端发送指示信令，以指示推荐资源，从而可以缩短第二终端解调指示信令所需要的时间或者所述时间间隔的长度。
可选地，在SCI format n为1st stage SCI的情况下，UE可以同时发送多种/两种1st stage SCI(例如在不同的sub-channel/interlace/RB set/band发送)，其中一种为SCI format n。好处是保证不同种类SCI的解调可靠性。
可选地，解调SCI format n的能力是可选的。
可选地，所述方法还包括：所述第一终端和第二终端协商确定所述第二终端解调所述SCI format n的能力。
第一终端和第二终端协商确定第二终端解调SCI format n的能力，不强制第二终端具有解调SCI format n的能力，从而可以降低终端实现的复杂度。
可选地，解调所述SCI format n的能力是按资源集合(per pool/per BWP/per band/per CC/per RB set)配置或预配置的。
需要说明的是，如果per pool/per BWP/per band/per CC/per RB set要求终端解调SCI format n，那么在该资源集合中进行接收和/或发送的终端都需要解调该SCI format n。
可选地，所述SCI format n和传输块TB一起传输，和/或，由Padding TB触发相应PSCCH/PSSCH资源选择，以传输所述SCI format n。
可以理解的是，如果存在TB传输，则SCI format n可以和TB一起传输。如果不存在TB传输，则由填充(Padding)TB触发相应PSCCH/PSSCH资源选择以传输所述SCI format n。
可选地，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源中选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间和资源选择的准备的时间为预设的值。
可以理解的是，若所述第二终端解调所述指示信令后直接从所述指示信令指示的资源中选择传输资源进行SL传输，则第二终端准备感知(sensing)结果和准备资源选择的时间可以省略或者缩减。
可选的，所述第二终端收集感知结果的时间和资源选择的准备的时间为预设的值，例如，Tproc,0，Tproc,1，N symbol，0ms等。
可选地，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间、资源选择的准备的时间和准备SL PSCCH/PSSCH所需的时间(即Tproc,0+Tproc,1)为预设的值(例如缩短到UE准备PSCCH/PSSCH传输的时间等)。
可选地，所述方法还包括：所述第一终端和第二终端协商所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输。
需要说明的是，此处协商可以是单向通知或者双向协商，所述第一终端和第二终端协商所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输，以便于第一终端确定如何确定推荐资源，以及第二终端确定如何进行资源选择。
可选地，所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输，是按照资源集合(per pool/per BWP/per band/per CC/per RB set)配置或预配置的。
可选地，所述第二终端准备侧链路SL物理侧链路控制信道PSCCH/PSSCH所需的时间上限满足以下其中之一：
a)与第一PUSCH准备时间上限相同；
第一PUSCH准备时间上限的计算方法参考TS38.214 6.4，其中d值可以设为预设值，包括d值可以取0。
gNB调度PUSCH的时候，会基于UE的PUSCH preparation time确定PDCCH和PUSCH间的时间间隔。TS38.214 6.4章节中，PUSCH preparation time至少基于预设N2值和d值(d值包括d_2，d_2,1和d_2,2)确定的。其中，N2值对于高性能UE和低性能UE取值分别如下表1和表2所示：
表1:PUSCH preparation time for PUSCH timing capability 1
表2:PUSCH preparation time for PUSCH timing capability 2
b)所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PUSCH准备时间上限相同；
c)以第一PUSCH准备时间上限为参考，向上取整到预设时间单元(例如slot)；
d)与第一PSSCH准备时间上限相同；
gNB调度PSSCH的时候，会基于UE的PSSCH preparation time确定PDCCH和PSSCH间的时间间隔。TS38.214 8.6章节中，PSSCH preparation time至少基于预设N2值和d值(d值包括d_2,1,其中d_2,1＝1)确定的。其中，N2值如下：
表3:PSSCH preparation time
e)所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PSSCH准备时间上限相同；
f)以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；
g)所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和，以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；
h)所述第二终端准备SL PSCCH/PSSCH所需的时间上限是协议约定或配置或预配置的；
i)根据所述第二终端准备TB的时间确定。
可以规定第二终端准备TB的时间，那么第二终端的PSCCH/PSSCH准备时间可以进一步缩短(例如，第二终端在解码指示信息之前准备TB，第二终端解码完第一终端的资源指示信息后，可以直接将TB映射到物理资源)。
其中，第二终端向第一终端发送请求(request)的时间规定为第二终端准备TB的时间。
也可以将第二终端收到第一终端的反馈信息(例如request信令的HARQ反馈，request信息关联的反馈信息)的时间规定为第二终端准备TB的时间。第一终端向第二终端发送信令指示第二终端准备TB，第二终端解调该信令后准备TB。
可选地，在满足第一条件的情况下，所述第一终端或第二终端按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
其中，所述第一条件包括以下至少一项：
所述第一终端或第二终端在非授权频谱上进行传输；
所述第二终端进行基于共享的COT传输，所述第一终端将COT共享给所述第二终端；
所述第一终端使用侧链路控制信息SCI format n向第二终端发送指示信令；
所述第二终端直接从所述指示信令指示的资源中选择传输资源进行SL传输；
所述第一终端与所述第二终端协商按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
按照资源集合配置或预配置。
例如，满足下述至少一个条件的情况下，UE-A(即第一终端)/UE-B(第二终端)假设所述缩短的(最小)时间间隔：
UE-B/UE-A在unlicensed spectrum进行传输(至少包括在regulation规定的5GHz unlicensed spectrum进行传输)，UE-B/UE-A按上述(最小)时间间隔进行信息指示/信息解调；
UE-B进行基于COT sharing传输，UE-A将COT分享给UE-B的时候，UE-B/UE-A按上述(最小)时间间隔进行信息指示/信息解调；
UE-A和UE-B进行协商是否基于COT sharing进行传输；
UE-A使用SCI format n通知推荐资源时，UE-A/UE-B按上述(最小)时间间隔进行信息指示/信息解调；
UE-B直接从指示信息指示的资源中选择传输资源，UE-A/UE-B按上述(最小)时间间隔进行信息指示/信息解调；
UE-A和UE-B间协商(可以为单向通知，或者双向协商)，UE-A/UE-B是否按上述(最小)时间间隔进行信息指示/信息解调；
UE-A/UE-B按上述(最小)时间间隔进行信息指示/信息解调，是按资源集合(per pool/per BWP/per band/per CC/per RB set)配置/预配置的。
在本申请实施例中，通过缩短指示信令的传输资源与推荐资源之间的时间间隔，可以使终端更好地实现SL COT共享，扩展COT共享的使用场景。
在上述各实施例的基础上，所述方法还包括：
所述第一终端选择所述推荐资源和所述指示信令的传输资源。
可以理解的是，为了实现COT共享，第一终端选择推荐资源和指示信令的传输资源。需要说 明的是，指示信令可以和数据在同样资源上传输，选择指示信令的传输资源也可以理解为选择相应的数据传输资源。
其中，所述第一终端选择所述推荐资源和所述指示信令的传输资源，包括以下至少一项：
1)所述第一终端选择第一COT长度内的多个资源，所述多个资源中的一部分资源用于携带指示信令，所述多个资源中的一部分资源为所述推荐资源；
可选地，所述第一终端选择第一COT长度内的多个资源，包括以下至少一项：
a)所述第一终端的媒介访问控制MAC层从备选资源集合中选择在同一个COT内的多个资源；
例如，选择第一个资源时可以随机选则或者按照预设规则选择，选择其他资源时，(优先)选择和其他已选资源在同一个COT内的资源。
又例如，PHY层上报的备选资源中，多个备选资源(个数趋近于MAC层将要选择的资源个数)位于同一个COT内，那么(优先)选择这些备选资源。
b)所述第一终端的物理PHY层向MAC层上报的备选资源集中至少部分备选资源位于同一个COT内；
例如，PHY层进行资源排除的时候，保证某COT长度内剩余多个备选资源(个数可以为MAC层指示的)。
又例如，PHY层进行资源排除的时候，保证COT长度内剩余多个备选资源(个数可以为MAC层指示的)，这样的COT个数大于/不小于x个，或者，这样的COT个数占资源选择窗内总的COT个数(如图4所示)的比例大于/不小于x％。图4为本申请实施例提供的资源选择的示意图。
c)所述第一终端的PHY层向MAC层上报备选资源集时，上报位于同一个COT内的备选资源；
d)所述指示信令的传输资源为位于所述第一COT内靠前的一个/多个资源；
e)所述推荐资源位于所述指示信令的传输资源之后，所述指示信令的传输资源与所述推荐资源之间的时间间隔大于所述最小时间间隔。
2)所述第一终端先选择所述推荐资源，再选择所述指示信令的传输资源，使得所述指示信令的传输资源和至少一个推荐资源均在所述第一COT内且满足所述时间间隔或最小时间间隔要求；
可选地，所述第一终端先选择所述推荐资源，再选择所述指示信令的传输资源，包括：
所述第一终端的MAC层选择第一资源作为指示信令的传输资源，所述第一资源与推荐资源在同一个COT内。
可选地，在所述第一终端先选择所述推荐资源，再选择所述指示信令的传输资源的情况下，所述指示信令的传输资源的资源选择窗口的开始位置与第一推荐资源的距离小于所述第一COT的长度，其中，所述第一推荐资源包括以下之一：所有推荐资源，部分推荐资源，至少一个推荐资源，前N个推荐资源。
可选地，在所述第一终端先选择所述推荐资源，再选择所述指示信令的传输资源的情况下，所述指示信令的传输资源的资源选择窗口的结束位置与第一推荐资源的距离大于所述最小时间间隔，其中，所述第一推荐资源包括以下之一：所有推荐资源，部分推荐资源，至少一个推荐资源，前N个推荐资源。
3)所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源，使得所述指示信令的传输资源和至少一个推荐资源均在所述第一COT内且满足所述时间间隔或最小时间间隔要求；
可选地，所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源，包括：
第一终端的MAC层选择第一资源作为推荐资源，第一资源与指示信令的传输资源在同一个COT内。
可选地，在所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源的情况下，所述推荐资源的资源选择窗口的结束位置与第一指示信令的传输资源的距离小于所述第一COT的长度，其中，所述第一指示信令的传输资源包括以下之一：所有指示信令的传输资源，部分指示信令的传输资源，至少一个指示信令的传输资源，后N个指示信令的传输资源。
可选地，在所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源的情况下，所述推荐资源的资源选择窗口的开始位置与第一指示信令的传输资源的距离大于所述最小时间间隔，其中，所述第一指示信令的传输资源包括以下之一：所有指示信令的传输资源，部分指示信令的传输资源，至少一个指示信令的传输资源，后N个指示信令的传输资源。
需要说明的是，在本申请实施例中可以假设MAC层同时触发第一终端选择指示信令传输资源和推荐资源。
4)所述第一终端确定第一COT内所述传输资源的数量以及所述推荐资源的数量。
可选地，所述第一终端确定第一COT内所述传输资源的数量以及所述推荐资源的数量，包括以下至少一项：
a)所述第一终端根据所述第一终端的实现确定第一COT内所述传输资源的数量以及所述推荐资源的数量；
b)所述第一终端根据待传输的TB的TBS确定第一COT内所述传输资源的数量以及所述推荐资源的数量；
c)所述第一终端根据系统配置的第一比值，确定第一COT内所述传输资源的数量，将所述第一COT内的其他资源作为所述推荐资源；
例如，系统配置一个百分比X％，第一终端一旦LBT成功，自己使用(最少/最多)X％的资源，其余资源可以共享给其他UE。
d)所述第一终端根据系统配置的第二比值，确定所述推荐资源的数量；
例如，系统配置一个百分比Y％，UE-A一旦LBT成功，share给其他UE的资源(最少/最多)占比Y％。
e)所述第一终端根据接收到的来自其他终端的数据的数量或者根据解调来自其他终端的数据的成功率，调整所述推荐资源的数量。
第一终端根据接收到的来自其他终端的数据的数量或者根据解调来自其他终端的数据的成功率，调整share给其他UE的资源的比例。
例如，一段时间没收到自其他UE的数据，或接收的数据很少，或者接收的数据经常解错，说明所述其他UE的LBT失败概率较大，需要share COT给其他UE。
可选地，所述第一COT的长度根据以下至少一项确定：
指示信令的优先级信息；
第二终端的通知信息，所述通知信息用于通知所述指示信令的优先级信息或COT长度。
一种实施方式中，根据指示信令的优先级信息确定第一COT的长度，其中，指示信令的优先级信息包括L1priority,PQI,CAPC等。指示信令的优先级信息由协议约定或配置或预配置。
一种实施方式中，根据第二终端的通知信息，确定第一COT的长度。
例如，第二终端将传输的优先级信息通知给第一终端，第一终端据此确定第一COT的长度。
例如，第二终端直接通知第一COT的长度。
在一些可选的实施例中，第一终端也可以自主确定第一COT的长度，并将第一COT长度或者关联的优先级信息通知给第二终端。
在本申请实施例中，通过使指示信令的传输资源和所述推荐资源处于同一个COT内，缩短指示信令的传输资源与推荐资源之间的时间间隔，可以使终端更好地实现SL COT共享，扩展COT共享的使用场景，并且本申请实施例还提供了在采用缩短的指示信令的传输资源与推荐资源之间的时间间隔基础上，终端选择推荐资源和指示信令的传输资源的方法，可以使得UE较方便地向其他UE以COT sharing的形式指示推荐的传输资源。
图5为本申请实施例提供的侧链路COT共享方法的流程示意图之二。如图5所示，该侧链路COT共享方法包括：
步骤500、第二终端接收第一终端发送的指示信令，所述指示信令用于指示推荐资源，所述指示信令的传输资源和所述推荐资源处于同一个COT内。
可选地，所述指示信令的传输资源与所述推荐资源之间的时间间隔或最小时间间隔的长度包括以下至少一项：
第二终端解调所述指示信令所需的时间上限；
第二终端收集感知结果的时间和/或资源选择的准备的时间上限；
第二终端准备侧链路SL物理侧链路控制信道PSCCH/物理侧链路共享信道PSSCH所需的时间上限。
可选地，所述时间间隔或最小时间间隔的长度与终端的处理能力等级相关联。
可选地，所述时间间隔或最小时间间隔的长度与子载波间隔SCS相关联。
可选地，所述时间间隔或最小时间间隔的长度由协议约定、配置或预配置，或者所述时间间隔或最小时间间隔的长度的各组成部分中的至少一项由协议约定、配置或预配置。
可选地，所述第二终端接收第一终端发送的指示信令包括：第二终端接收所述第一终端使用侧链路控制信息格式SCI format n发送的指示信令。
可选地，所述方法还包括：所述第二终端和第一终端协商确定所述第二终端解调所述SCI format n的能力。
可选地，所述第二终端解调所述SCI format n的能力是按资源集合配置或预配置的。
可选地，所述SCI format n和传输块TB一起传输，和/或，由Padding TB触发相应PSCCH/PSSCH资源选择，以传输所述SCI format n。
可选地，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源中选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间和资源选择的准备的时间为预设的值。
可选地，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间、资源选择的准备的时间和准备SL PSCCH/PSSCH所需的时间为预设的值。
可选地，所述方法还包括：所述第二终端和第一终端协商所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输。
可选地，所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输，是按照资源集合配置或预配置的。
可选地，所述第二终端准备侧链路SL物理侧链路控制信道PSCCH/PSSCH所需的时间上限满足以下其中之一：
与第一PUSCH准备时间上限相同；
所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PUSCH准备时间上限相同；
以第一PUSCH准备时间上限为参考，向上取整到预设时间单元；
与第一PSSCH准备时间上限相同；
所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PSSCH准备时间上限相同；
以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；
所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和，以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；
所述第二终端准备SL PSCCH/PSSCH所需的时间上限是协议约定或配置或预配置的；
根据所述第二终端准备TB的时间确定。
可选地，在满足第一条件的情况下，所述第一终端或第二终端按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
其中，所述第一条件包括以下至少一项：
所述第一终端或第二终端在非授权频谱上进行传输；
所述第二终端进行基于共享的COT传输，所述第一终端将COT共享给所述第二终端；
所述第一终端使用侧链路控制信息SCI format n向第二终端发送指示信令；
所述第二终端直接从所述指示信令指示的资源中选择传输资源进行SL传输；
所述第一终端与所述第二终端协商按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
按照资源集合配置或预配置。
本实施例提供的第二终端侧的侧链路COT共享方法与第一终端侧的侧链路COT共享方法属于同一发明构思，因此，对于本实施例中的相关概念和描述，可以参考前述第一终端侧的侧链路COT共享方法，在此不再赘述。
在本申请实施例中，通过缩短指示信令的传输资源与推荐资源之间的时间间隔，可以使终端更好地实现SL COT共享，扩展COT共享的使用场景。
本申请实施例提供的侧链路COT共享方法，执行主体可以为侧链路COT共享装置。本申请实施例中以侧链路COT共享装置执行侧链路COT共享方法为例，说明本申请实施例提供的侧链路COT共享装置。
图6为本申请实施例提供的侧链路COT共享装置的结构示意图之一，如图6所示，该侧链路COT共享装置600包括：
第一发送单元610，用于向第二终端发送指示信令，所述指示信令用于指示推荐资源，所述指示信令的传输资源和所述推荐资源处于同一个COT内。
可选地，所述指示信令的传输资源与所述推荐资源之间的时间间隔或最小时间间隔的长度包括以下至少一项：
第二终端解调所述指示信令所需的时间上限；
第二终端收集感知结果的时间和/或资源选择的准备的时间上限；
第二终端准备侧链路SL物理侧链路控制信道PSCCH/物理侧链路共享信道PSSCH所需的时间上限。
可选地，所述时间间隔或最小时间间隔的长度与终端的处理能力等级相关联。
可选地，所述时间间隔或最小时间间隔的长度与子载波间隔SCS相关联。
可选地，所述时间间隔或最小时间间隔的长度由协议约定、配置或预配置，或者所述时间间隔或最小时间间隔的长度的各组成部分中的至少一项由协议约定、配置或预配置。
可选地，所述第一终端向第二终端发送指示信令包括：所述第一终端使用侧链路控制信息格式SCI format n向第二终端发送指示信令。
可选地，所述装置还包括：
第一协商单元，用于和第二终端协商确定所述第二终端解调所述SCI format n的能力。
可选地，解调所述SCI format n的能力是按资源集合配置或预配置的。
可选地，所述SCI format n和传输块TB一起传输，和/或，由Padding TB触发相应PSCCH/PSSCH资源选择，以传输所述SCI format n。
可选地，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源中选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间和资源选择的准备的时间为预设的值。
可选地，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间、资源选择的准备的时间和准备SL PSCCH/PSSCH所需的时间为预设的值。
可选地，所述装置还包括：
第二协商单元，用于和第二终端协商所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输。
可选地，所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输，是按照资源集合配置或预配置的。
可选地，所述第二终端准备侧链路SL物理侧链路控制信道PSCCH/PSSCH所需的时间上限满足以下其中之一：
与第一PUSCH准备时间上限相同；
所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PUSCH准备时间上限相同；
以第一PUSCH准备时间上限为参考，向上取整到预设时间单元；
与第一PSSCH准备时间上限相同；
所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PSSCH准备时间上限相同；
以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；
所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和，以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；
所述第二终端准备SL PSCCH/PSSCH所需的时间上限是协议约定或配置或预配置的；
根据所述第二终端准备TB的时间确定。
可选地，在满足第一条件的情况下，所述第一终端或第二终端按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
其中，所述第一条件包括以下至少一项：
所述第一终端或第二终端在非授权频谱上进行传输；
所述第二终端进行基于共享的COT传输，所述第一终端将COT共享给所述第二终端；
所述第一终端使用侧链路控制信息SCI format n向第二终端发送指示信令；
所述第二终端直接从所述指示信令指示的资源中选择传输资源进行SL传输；
所述第一终端与所述第二终端协商按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
按照资源集合配置或预配置。
在本申请实施例中，通过缩短指示信令的传输资源与推荐资源之间的时间间隔，可以使终端更好地实现SL COT共享，扩展COT共享的使用场景。
可选地，所述装置还包括：
第一选择单元，用于选择所述推荐资源和所述指示信令的传输资源；
其中，所述选择所述推荐资源和所述指示信令的传输资源，包括以下至少一项：
所述第一终端选择第一COT长度内的多个资源，所述多个资源中的一部分资源用于携带指示信令，所述多个资源中的一部分资源为所述推荐资源；
所述第一终端先选择所述推荐资源，再选择所述指示信令的传输资源，使得所述指示信令的传输资源和至少一个推荐资源均在所述第一COT内且满足所述时间间隔或最小时间间隔要求；
所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源，使得所述指示信令的传输资源和至少一个推荐资源均在所述第一COT内且满足所述时间间隔或最小时间间隔要求；
所述第一终端确定第一COT内所述传输资源的数量以及所述推荐资源的数量。
可选地，所述选择第一COT长度内的多个资源，包括以下至少一项：
所述第一终端的媒介访问控制MAC层从备选资源集合中选择在同一个COT内的多个资源；
所述第一终端的物理PHY层向MAC层上报的备选资源集中至少部分备选资源位于同一个COT内；
所述第一终端的PHY层向MAC层上报备选资源集时，上报位于同一个COT内的备选资源；
所述指示信令的传输资源为位于所述第一COT内靠前的一个/多个资源；
所述推荐资源位于所述指示信令的传输资源之后，所述指示信令的传输资源与所述推荐资源之间的时间间隔大于所述最小时间间隔。
可选地，所述先选择所述推荐资源，再选择所述指示信令的传输资源，包括：
所述第一终端的MAC层选择第一资源作为指示信令的传输资源，所述第一资源与推荐资源在同一个COT内。
可选地，在所述第一终端先选择所述推荐资源，再选择所述指示信令的传输资源的情况下，所述指示信令的传输资源的资源选择窗口的开始位置与第一推荐资源的距离小于所述第一COT的长度，其中，所述第一推荐资源包括以下之一：所有推荐资源，部分推荐资源，至少一个推荐资源，前N个推荐资源。
可选地，在所述第一终端先选择所述推荐资源，再选择所述指示信令的传输资源的情况下，所述指示信令的传输资源的资源选择窗口的结束位置与第一推荐资源的距离大于所述最小时间间隔，其中，所述第一推荐资源包括以下之一：所有推荐资源，部分推荐资源，至少一个推荐资源，前N个推荐资源。
可选地，所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源，包括：
第一终端的MAC层选择第一资源作为推荐资源，第一资源与指示信令的传输资源在同一个COT内。
可选地，在所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源的情况下，所述推荐资源的资源选择窗口的开始位置与第一指示信令的传输资源的距离大于所述最小时间间隔，其中，所述第一指示信令的传输资源包括以下之一：所有指示信令的传输资源，部分指示信令的传输资源，至少一个指示信令的传输资源，后N个指示信令的传输资源。
可选地，在所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源的情况下，所述推荐资源的资源选择窗口的结束位置与第一指示信令的传输资源的距离小于所述第一COT的长度，其中，所述第一指示信令的传输资源包括以下之一：所有指示信令的传输资源，部分指示信令的传输资源，至少一个指示信令的传输资源，后N个指示信令的传输资源。
可选地，所述第一COT的长度根据以下至少一项确定：
指示信令的优先级信息；
第二终端的通知信息，所述通知信息用于通知所述指示信令的优先级信息或COT长度。
可选地，所述确定第一COT内所述传输资源的数量以及所述推荐资源的数量，包括以下至少一项：
根据所述第一终端的实现确定第一COT内所述传输资源的数量以及所述推荐资源的数量；
根据待传输的TB的TBS确定第一COT内所述传输资源的数量以及所述推荐资源的数量；
根据系统配置的第一比值，确定第一COT内所述传输资源的数量，将所述第一COT内的其他资源作为所述推荐资源；
根据系统配置的第二比值，确定所述推荐资源的数量；
根据接收到的来自其他终端的数据的数量或者根据解调来自其他终端的数据的成功率，调整所述推荐资源的数量。
在本申请实施例中，通过使指示信令的传输资源和所述推荐资源处于同一个COT内，缩短指 示信令的传输资源与推荐资源之间的时间间隔，可以使终端更好地实现SL COT共享，扩展COT共享的使用场景，并且本申请实施例还提供了在采用缩短的指示信令的传输资源与推荐资源之间的时间间隔基础上，终端选择推荐资源和指示信令的传输资源的方法，可以使得UE较方便地向其他UE以COT sharing的形式指示推荐的传输资源。
本申请实施例中的侧链路COT共享装置可以是电子设备，例如具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端，也可以为除终端之外的其他设备。示例性的，终端可以包括但不限于上述所列举的终端11的类型，其他设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，本申请实施例不作具体限定。
本申请实施例提供的侧链路COT共享装置能够实现图3至图4的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
图7为本申请实施例提供的侧链路COT共享装置的结构示意图之二。如图7所示，该侧链路COT共享装置700包括：
第一接收单元710，用于接收第一终端发送的指示信令，所述指示信令用于指示推荐资源，所述指示信令的传输资源和所述推荐资源处于同一个COT内。
可选地，所述指示信令的传输资源与所述推荐资源之间的时间间隔或最小时间间隔的长度包括以下至少一项：
第二终端解调所述指示信令所需的时间上限；
第二终端收集感知结果的时间和/或资源选择的准备的时间上限；
第二终端准备侧链路SL物理侧链路控制信道PSCCH/物理侧链路共享信道PSSCH所需的时间上限。
可选地，所述时间间隔或最小时间间隔的长度与终端的处理能力等级相关联。
可选地，所述时间间隔或最小时间间隔的长度与子载波间隔SCS相关联。
可选地，所述时间间隔或最小时间间隔的长度由协议约定、配置或预配置，或者所述时间间隔或最小时间间隔的长度的各组成部分中的至少一项由协议约定、配置或预配置。
可选地，所述第二终端接收第一终端发送的指示信令包括：第二终端接收所述第一终端使用侧链路控制信息格式SCI format n发送的指示信令。
可选地，所述装置还包括：
第三协商单元，用于和第一终端协商确定所述第二终端解调所述SCI format n的能力。
可选地，所述第二终端解调所述SCI format n的能力是按资源集合配置或预配置的。
可选地，所述SCI format n和传输块TB一起传输，和/或，由Padding TB触发相应PSCCH/PSSCH资源选择，以传输所述SCI format n。
可选地，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源中选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间和资源选择的准备的时间为预设的值。
可选地，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间、资源选择的准备的时间和准备SL PSCCH/PSSCH所需的时间为预设的值。
可选地，所述装置还包括：
第四协商单元，用于和第一终端协商所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输。
可选地，所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输，是按照资源集合配置或预配置的。
可选地，所述第二终端准备侧链路SL物理侧链路控制信道PSCCH/PSSCH所需的时间上限满足以下其中之一：
与第一PUSCH准备时间上限相同；
所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PUSCH准备时间上限相同；
以第一PUSCH准备时间上限为参考，向上取整到预设时间单元；
与第一PSSCH准备时间上限相同；
所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PSSCH准备时间上限相同；
以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；
所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和，以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；
所述第二终端准备SL PSCCH/PSSCH所需的时间上限是协议约定或配置或预配置的；
根据所述第二终端准备TB的时间确定。
可选地，在满足第一条件的情况下，所述第一终端或第二终端按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
其中，所述第一条件包括以下至少一项：
所述第一终端或第二终端在非授权频谱上进行传输；
所述第二终端进行基于共享的COT传输，所述第一终端将COT共享给所述第二终端；
所述第一终端使用侧链路控制信息SCI format n向第二终端发送指示信令；
所述第二终端直接从所述指示信令指示的资源中选择传输资源进行SL传输；
所述第一终端与所述第二终端协商按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
按照资源集合配置或预配置。
在本申请实施例中，通过使指示信令的传输资源和所述推荐资源处于同一个COT内，缩短指示信令的传输资源与推荐资源之间的时间间隔，可以使终端更好地实现SL COT共享，扩展COT共享的使用场景。
本申请实施例中的侧链路COT共享装置可以是电子设备，例如具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端，也可以为除终端之外的其他设备。示例性的，终端可以包括但不限于上述所列举的终端11的类型，其他设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，本申请实施例不作具体限定。
本申请实施例提供的侧链路COT共享装置能够实现图5的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
可选的，如图8所示，本申请实施例还提供一种通信设备800，包括处理器801和存储器802，存储器802上存储有可在所述处理器801上运行的程序或指令，例如，该通信设备800为终端时，该程序或指令被处理器801执行时实现上述侧链路COT共享方法实施例的各个步骤，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供一种终端，包括处理器和通信接口，通信接口用于向第二终端发送指示信令，所述指示信令用于指示推荐资源。该终端实施例与上述终端侧方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中，且能达到相同的技术效果。
本申请实施例还提供一种终端，包括处理器和通信接口，通信接口用于接收第一终端发送的指示信令，所述指示信令用于指示推荐资源。该终端实施例与上述终端侧方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中，且能达到相同的技术效果。
具体地，图9为实现本申请实施例的一种终端的硬件结构示意图。
该终端900包括但不限于：射频单元901、网络模块902、音频输出单元903、输入单元904、传感器905、显示单元906、用户输入单元907、接口单元908、存储器909以及处理器910等中的至少部分部件。
本领域技术人员可以理解，终端900还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器910逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图9中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元904可以包括图形处理单元(Graphics Processing Unit，GPU)9041和麦克风9042，图形处理器9041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元906可包括显示面板9061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板9061。用户输入单元907包括触控面板9071以及其他输入设备9072中的至少一种。触控面板9071，也称为触摸屏。触控面板9071可包括触摸检测装置和触摸控制器两个部分。其他输入设备9072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元901接收来自网络侧设备的下行数据后，可以传输给处理器910进行处理；另外，射频单元901可以向网络侧设备发送上行数据。通常，射频单元901包括但不 限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器909可用于存储软件程序或指令以及各种数据。存储器909可主要包括存储程序或指令的第一存储区和存储数据的第二存储区，其中，第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器909可以包括易失性存储器或非易失性存储器，或者，存储器x09可以包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synch link DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本申请实施例中的存储器909包括但不限于这些和任意其它适合类型的存储器。
处理器910可包括一个或多个处理单元；可选的，处理器910集成应用处理器和调制解调处理器，其中，应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作，调制解调处理器主要处理无线通信信号，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器910中。
其中，射频单元901，用于向第二终端发送指示信令，所述指示信令用于指示推荐资源。
可选地，所述指示信令的传输资源与所述推荐资源之间的时间间隔或最小时间间隔的长度包括以下至少一项：
第二终端解调所述指示信令所需的时间上限；
第二终端收集感知结果的时间和/或资源选择的准备的时间上限；
第二终端准备侧链路SL物理侧链路控制信道PSCCH/物理侧链路共享信道PSSCH所需的时间上限。
可选地，所述时间间隔或最小时间间隔的长度与终端的处理能力等级相关联。
可选地，所述时间间隔或最小时间间隔的长度与子载波间隔SCS相关联。
可选地，所述时间间隔或最小时间间隔的长度由协议约定、配置或预配置，或者所述时间间隔或最小时间间隔的长度的各组成部分中的至少一项由协议约定、配置或预配置。
可选地，所述射频单元901用于：使用侧链路控制信息格式SCI format n向第二终端发送指示信令。
可选地，所述处理器910用于：和第二终端协商确定所述第二终端解调所述SCI format n的能力。
可选地，解调所述SCI format n的能力是按资源集合配置或预配置的。
可选地，所述SCI format n和传输块TB一起传输，和/或，由Padding TB触发相应PSCCH/PSSCH资源选择，以传输所述SCI format n。
可选地，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源中选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间和资源选择的准备的时间为预设的值。
可选地，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间、资源选择的准备的时间和准备SL PSCCH/PSSCH所需的时间为预设的值。
可选地，所述处理器910还用于：
和第二终端协商所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输。
可选地，所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输，是按照资源集合配置或预配置的。
可选地，所述第二终端准备侧链路SL物理侧链路控制信道PSCCH/PSSCH所需的时间上限满足以下其中之一：与第一PUSCH准备时间上限相同；所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PUSCH准备时间上限相同；以第一PUSCH准备时间上限为参考，向上取整到预设时间单元；与第一PSSCH准备时间上限相同；所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需 的时间上限之和与第一PSSCH准备时间上限相同；以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和，以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；所述第二终端准备SL PSCCH/PSSCH所需的时间上限是协议约定或配置或预配置的；根据所述第二终端准备TB的时间确定。
可选地，在满足第一条件的情况下，所述第一终端或第二终端按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
其中，所述第一条件包括以下至少一项：
所述第一终端或第二终端在非授权频谱上进行传输；
所述第二终端进行基于共享的COT传输，所述第一终端将COT共享给所述第二终端；
所述第一终端使用侧链路控制信息SCI format n向第二终端发送指示信令；
所述第二终端直接从所述指示信令指示的资源中选择传输资源进行SL传输；
所述第一终端与所述第二终端协商按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
按照资源集合配置或预配置。
在本申请实施例中，通过缩短指示信令的传输资源与推荐资源之间的时间间隔，可以使终端更好地实现SL COT共享，扩展COT共享的使用场景。
可选地，所述处理器910还用于：选择所述推荐资源和所述指示信令的传输资源；
其中，所述选择所述推荐资源和所述指示信令的传输资源，包括以下至少一项：
所述第一终端选择第一COT长度内的多个资源，所述多个资源中的一部分资源用于携带指示信令，所述多个资源中的一部分资源为所述推荐资源；
所述第一终端先选择所述推荐资源，再选择所述指示信令的传输资源，使得所述指示信令的传输资源和至少一个推荐资源均在所述第一COT内且满足所述时间间隔或最小时间间隔要求；
所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源，使得所述指示信令的传输资源和至少一个推荐资源均在所述第一COT内且满足所述时间间隔或最小时间间隔要求；
所述第一终端确定第一COT内所述传输资源的数量以及所述推荐资源的数量。
可选地，所述选择第一COT长度内的多个资源，包括以下至少一项：
所述第一终端的媒介访问控制MAC层从备选资源集合中选择在同一个COT内的多个资源；
所述第一终端的物理PHY层向MAC层上报的备选资源集中至少部分备选资源位于同一个COT内；
所述第一终端的PHY层向MAC层上报备选资源集时，上报位于同一个COT内的备选资源；
所述指示信令的传输资源为位于所述第一COT内靠前的一个/多个资源；
所述推荐资源位于所述指示信令的传输资源之后，所述指示信令的传输资源与所述推荐资源之间的时间间隔大于所述最小时间间隔。
可选地，所述先选择所述推荐资源，再选择所述指示信令的传输资源，包括：
所述第一终端的MAC层选择第一资源作为指示信令的传输资源，所述第一资源与推荐资源在同一个COT内。
可选地，在所述第一终端先选择所述推荐资源，再选择所述指示信令的传输资源的情况下，所述指示信令的传输资源的资源选择窗口的开始位置与第一推荐资源的距离小于所述第一COT的长度，其中，所述第一推荐资源包括以下之一：所有推荐资源，部分推荐资源，至少一个推荐资源，前N个推荐资源。
可选地，在所述第一终端先选择所述推荐资源，再选择所述指示信令的传输资源的情况下，所述指示信令的传输资源的资源选择窗口的结束位置与第一推荐资源的距离大于所述最小时间间隔，其中，所述第一推荐资源包括以下之一：所有推荐资源，部分推荐资源，至少一个推荐资源，前N个推荐资源。
可选地，所述先选择所述指示信令的传输资源，再选择所述推荐资源，包括：
第一终端的MAC层选择第一资源作为推荐资源，第一资源与指示信令的传输资源在同一个COT内。
可选地，在所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源的情况下，所述推荐资源的资源选择窗口的开始位置与第一指示信令的传输资源的距离大于所述最小时间间隔，其中，所述第一指示信令的传输资源包括以下之一：所有指示信令的传输资源，部分指示信令的传输资源，至少一个指示信令的传输资源，后N个指示信令的传输资源。
可选地，在所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源的情况下，所述推荐资源的资源选择窗口的结束位置与第一指示信令的传输资源的距离小于所述第一COT的长度，其中，所述第一指示信令的传输资源包括以下之一：所有指示信令的传输资源，部分指示信令的传输资源，至少一个指示信令的传输资源，后N个指示信令的传输资源。
可选地，所述第一COT的长度根据以下至少一项确定：
指示信令的优先级信息；
第二终端的通知信息，所述通知信息用于通知所述指示信令的优先级信息或COT长度。
可选地，所述确定第一COT内所述传输资源的数量以及所述推荐资源的数量，包括以下至少一项：
根据所述第一终端的实现确定第一COT内所述传输资源的数量以及所述推荐资源的数量；
根据待传输的TB的TBS确定第一COT内所述传输资源的数量以及所述推荐资源的数量；
根据系统配置的第一比值，确定第一COT内所述传输资源的数量，将所述第一COT内的其他资源作为所述推荐资源；
根据系统配置的第二比值，确定所述推荐资源的数量；
根据接收到的来自其他终端的数据的数量或者根据解调来自其他终端的数据的成功率，调整所述推荐资源的数量。
在本申请实施例中，通过使指示信令的传输资源和所述推荐资源处于同一个COT内，缩短指示信令的传输资源与推荐资源之间的时间间隔，可以使终端更好地实现SL COT共享，扩展COT共享的使用场景，并且本申请实施例还提供了在采用缩短的指示信令的传输资源与推荐资源之间的时间间隔基础上，终端选择推荐资源和指示信令的传输资源的方法，可以使得UE较方便地向其他UE以COT sharing的形式指示推荐的传输资源。
在一些可选的实施例中，射频单元901，用于接收第一终端发送的指示信令，所述指示信令用于指示推荐资源。
可选地，所述指示信令的传输资源与所述推荐资源之间的时间间隔或最小时间间隔的长度包括以下至少一项：
第二终端解调所述指示信令所需的时间上限；
第二终端收集感知结果的时间和/或资源选择的准备的时间上限；
第二终端准备侧链路SL物理侧链路控制信道PSCCH/物理侧链路共享信道PSSCH所需的时间上限。
可选地，所述时间间隔或最小时间间隔的长度与终端的处理能力等级相关联。
可选地，所述时间间隔或最小时间间隔的长度与子载波间隔SCS相关联。
可选地，所述时间间隔或最小时间间隔的长度由协议约定、配置或预配置，或者所述时间间隔或最小时间间隔的长度的各组成部分中的至少一项由协议约定、配置或预配置。
可选地，所述射频单元901用于：接收所述第一终端使用侧链路控制信息格式SCI format n发送的指示信令。
可选地，所述处理器910用于：
和第一终端协商确定所述第二终端解调所述SCI format n的能力。
可选地，所述第二终端解调所述SCI format n的能力是按资源集合配置或预配置的。
可选地，所述SCI format n和传输块TB一起传输，和/或，由Padding TB触发相应PSCCH/PSSCH资源选择，以传输所述SCI format n。
可选地，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源中选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间和资源选择的准备的时间为预设的值。
可选地，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间、资源选择的准备的时间和准备SL PSCCH/PSSCH所需的时间为预设的值。
可选地，所述处理器910用于：
和第一终端协商所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输。
可选地，所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输，是按照资源集合配置或预配置的。
可选地，所述第二终端准备侧链路SL物理侧链路控制信道PSCCH/PSSCH所需的时间上限 满足以下其中之一：与第一PUSCH准备时间上限相同；所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PUSCH准备时间上限相同；以第一PUSCH准备时间上限为参考，向上取整到预设时间单元；与第一PSSCH准备时间上限相同；所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PSSCH准备时间上限相同；以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和，以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；所述第二终端准备SL PSCCH/PSSCH所需的时间上限是协议约定或配置或预配置的；根据所述第二终端准备TB的时间确定。
可选地，在满足第一条件的情况下，所述第一终端或第二终端按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
其中，所述第一条件包括以下至少一项：所述第一终端或第二终端在非授权频谱上进行传输；所述第二终端进行基于共享的COT传输，所述第一终端将COT共享给所述第二终端；所述第一终端使用侧链路控制信息SCI format n向第二终端发送指示信令；所述第二终端直接从所述指示信令指示的资源中选择传输资源进行SL传输；所述第一终端与所述第二终端协商按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；按照资源集合配置或预配置。
在本申请实施例中，通过缩短指示信令的传输资源与推荐资源之间的时间间隔，可以使终端更好地实现SL COT共享，扩展COT共享的使用场景。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述侧链路COT共享方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述侧链路COT共享方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现上述侧链路COT共享方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供了一种通信系统，包括：第一终端及第二终端，所述第一终端可用于执行如上所述的侧链路COT共享方法的步骤，所述第二终端可用于执行如上所述的侧链路COT共享方法的步骤。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对相关技术做出贡献的部分可以以计算机软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (44)

  1. 一种侧链路信道占用时间COT共享方法，包括：
    第一终端向第二终端发送指示信令，所述指示信令用于指示推荐资源，所述指示信令的传输资源和所述推荐资源处于同一个COT内。
  2. 根据权利要求1所述的方法，其中，所述指示信令的传输资源与所述推荐资源之间的时间间隔或最小时间间隔的长度包括以下至少一项：
    第二终端解调所述指示信令所需的时间上限；
    第二终端收集感知结果的时间和/或资源选择的准备的时间上限；
    第二终端准备侧链路SL物理侧链路控制信道PSCCH/物理侧链路共享信道PSSCH所需的时间上限。
  3. 根据权利要求2所述的方法，其中，所述时间间隔或最小时间间隔的长度与终端的处理能力等级相关联。
  4. 根据权利要求2所述的方法，其中，所述时间间隔或最小时间间隔的长度与子载波间隔SCS相关联。
  5. 根据权利要求2所述的方法，其中，所述时间间隔或最小时间间隔的长度由协议约定、配置或预配置，或者所述时间间隔或最小时间间隔的长度的各组成部分中的至少一项由协议约定、配置或预配置。
  6. 根据权利要求1-5中任一项所述的方法，其中，所述第一终端向第二终端发送指示信令包括：所述第一终端使用侧链路控制信息格式SCI format n向第二终端发送指示信令。
  7. 根据权利要求6所述的方法，其中，所述方法还包括：所述第一终端和第二终端协商确定所述第二终端解调所述SCI format n的能力。
  8. 根据权利要求6所述的方法，其中，所述第二终端解调所述SCI format n的能力是按资源集合配置或预配置的。
  9. 根据权利要求6所述的方法，其中，所述SCI format n和传输块TB一起传输，和/或，由Padding TB触发相应PSCCH/PSSCH资源选择，以传输所述SCI format n。
  10. 根据权利要求2所述的方法，其中，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源中选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间和资源选择的准备的时间为预设的值。
  11. 根据权利要求2所述的方法，其中，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间、资源选择的准备的时间和准备SL PSCCH/PSSCH所需的时间为预设的值。
  12. 根据权利要求10或11所述的方法，其中，所述方法还包括：所述第一终端和第二终端协商所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输。
  13. 根据权利要求10或11所述的方法，其中，所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输，是按照资源集合配置或预配置的。
  14. 根据权利要求2所述的方法，其中，所述第二终端准备侧链路SL物理侧链路控制信道PSCCH/PSSCH所需的时间上限满足以下其中之一：
    与第一PUSCH准备时间上限相同；
    所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PUSCH准备时间上限相同；
    以第一PUSCH准备时间上限为参考，向上取整到预设时间单元；
    与第一PSSCH准备时间上限相同；
    所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PSSCH准备时间上限相同；
    以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；
    所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和，以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；
    所述第二终端准备SL PSCCH/PSSCH所需的时间上限是协议约定或配置或预配置的；
    根据所述第二终端准备TB的时间确定。
  15. 根据权利要求2所述的方法，其中，在满足第一条件的情况下，所述第一终端或第二终端按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
    其中，所述第一条件包括以下至少一项：
    所述第一终端或第二终端在非授权频谱上进行传输；
    所述第二终端进行基于共享的COT传输，所述第一终端将COT共享给所述第二终端；
    所述第一终端使用侧链路控制信息SCI format n向第二终端发送指示信令；
    所述第二终端直接从所述指示信令指示的资源中选择传输资源进行SL传输；
    所述第一终端与所述第二终端协商按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
    按照资源集合配置或预配置。
  16. 根据权利要求1-15中任一项所述的方法，其中，所述方法还包括：
    所述第一终端选择所述推荐资源和所述指示信令的传输资源；
    其中，所述第一终端选择所述推荐资源和所述指示信令的传输资源，包括以下至少一项：
    所述第一终端选择第一COT长度内的多个资源，所述多个资源中的一部分资源用于携带指示信令，所述多个资源中的一部分资源为所述推荐资源；
    所述第一终端先选择所述推荐资源，再选择所述指示信令的传输资源，使得所述指示信令的传输资源和至少一个推荐资源均在所述第一COT内且满足所述时间间隔或最小时间间隔要求；
    所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源，使得所述指示信令的传输资源和至少一个推荐资源均在所述第一COT内且满足所述时间间隔或最小时间间隔要求；
    所述第一终端确定第一COT内所述传输资源的数量以及所述推荐资源的数量。
  17. 根据权利要求16所述的方法，其中，所述第一终端选择第一COT长度内的多个资源，包括以下至少一项：
    所述第一终端的媒介访问控制MAC层从备选资源集合中选择在同一个COT内的多个资源；
    所述第一终端的物理PHY层向MAC层上报的备选资源集中至少部分备选资源位于同一个COT内；
    所述第一终端的PHY层向MAC层上报备选资源集时，上报位于同一个COT内的备选资源；
    所述指示信令的传输资源为位于所述第一COT内靠前的一个/多个资源；
    所述推荐资源位于所述指示信令的传输资源之后，所述指示信令的传输资源与所述推荐资源之间的时间间隔大于所述最小时间间隔。
  18. 根据权利要求16所述的方法，其中，所述第一终端先选择所述推荐资源，再选择所述指示信令的传输资源，包括：
    所述第一终端的MAC层选择第一资源作为指示信令的传输资源，所述第一资源与推荐资源在同一个COT内。
  19. 根据权利要求16所述的方法，其中，在所述第一终端先选择所述推荐资源，再选择所述指示信令的传输资源的情况下，所述指示信令的传输资源的资源选择窗口的开始位置与第一推荐资源的距离小于所述第一COT的长度，其中，所述第一推荐资源包括以下之一：所有推荐资源，部分推荐资源，至少一个推荐资源，前N个推荐资源。
  20. 根据权利要求16所述的方法，其中，在所述第一终端先选择所述推荐资源，再选择所述指示信令的传输资源的情况下，所述指示信令的传输资源的资源选择窗口的结束位置与第一推荐资源的距离大于所述最小时间间隔，其中，所述第一推荐资源包括以下之一：所有推荐资源，部分推荐资源，至少一个推荐资源，前N个推荐资源。
  21. 根据权利要求16所述的方法，其中，所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源，包括：
    第一终端的MAC层选择第一资源作为推荐资源，第一资源与指示信令的传输资源在同一个COT内。
  22. 根据权利要求16所述的方法，其中，在所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源的情况下，所述推荐资源的资源选择窗口的开始位置与第一指示信令的传输资源的距离大于所述最小时间间隔，其中，所述第一指示信令的传输资源包括以下之一：所有指示信令的传输资源，部分指示信令的传输资源，至少一个指示信令的传输资源，后N个指示信令的传输资源。
  23. 根据权利要求16所述的方法，其中，在所述第一终端先选择所述指示信令的传输资源，再选择所述推荐资源的情况下，所述推荐资源的资源选择窗口的结束位置与第一指示信令的传输资源的距离小于所述第一COT的长度，其中，所述第一指示信令的传输资源包括以下之一：所有指示信令的传输资源，部分指示信令的传输资源，至少一个指示信令的传输资源，后N个指示信令的传输资源。
  24. 根据权利要求16-23中任一项所述的方法，其中，所述第一COT的长度根据以下至少一项确定：
    指示信令的优先级信息；
    第二终端的通知信息，所述通知信息用于通知所述指示信令的优先级信息或COT长度。
  25. 根据权利要求16所述的方法，其中，所述第一终端确定第一COT内所述传输资源的数量以及所述推荐资源的数量，包括以下至少一项：
    所述第一终端根据所述第一终端的实现确定第一COT内所述传输资源的数量以及所述推荐资源的数量；
    所述第一终端根据待传输的TB的TBS确定第一COT内所述传输资源的数量以及所述推荐资源的数量；
    所述第一终端根据系统配置的第一比值，确定第一COT内所述传输资源的数量，将所述第一COT内的其他资源作为所述推荐资源；
    所述第一终端根据系统配置的第二比值，确定所述推荐资源的数量；
    所述第一终端根据接收到的来自其他终端的数据的数量或者根据解调来自其他终端的数据的成功率，调整所述推荐资源的数量。
  26. 一种侧链路信道占用时间COT共享方法，包括：
    第二终端接收第一终端发送的指示信令，所述指示信令用于指示推荐资源，所述指示信令的传输资源和所述推荐资源处于同一个COT内。
  27. 根据权利要求26所述的方法，其中，所述指示信令的传输资源与所述推荐资源之间的时间间隔或最小时间间隔的长度包括以下至少一项：
    第二终端解调所述指示信令所需的时间上限；
    第二终端收集感知结果的时间和/或资源选择的准备的时间上限；
    第二终端准备侧链路SL物理侧链路控制信道PSCCH/物理侧链路共享信道PSSCH所需的时间上限。
  28. 根据权利要求27所述的方法，其中，所述时间间隔或最小时间间隔的长度与终端的处理能力等级相关联。
  29. 根据权利要求27所述的方法，其中，所述时间间隔或最小时间间隔的长度与子载波间隔SCS相关联。
  30. 根据权利要求27所述的方法，其中，所述时间间隔或最小时间间隔的长度由协议约定、配置或预配置，或者所述时间间隔或最小时间间隔的长度的各组成部分中的至少一项由协议约定、配置或预配置。
  31. 根据权利要求27所述的方法，其中，所述第二终端接收第一终端发送的指示信令包括：第二终端接收所述第一终端使用侧链路控制信息格式SCI format n发送的指示信令。
  32. 根据权利要求31所述的方法，其中，所述方法还包括：所述第二终端和第一终端协商确定所述第二终端解调所述SCI format n的能力。
  33. 根据权利要求31所述的方法，其中，所述第二终端解调所述SCI format n的能力是按资源集合配置或预配置的。
  34. 根据权利要求31所述的方法，其中，所述SCI format n和传输块TB一起传输，和/或，由Padding TB触发相应PSCCH/PSSCH资源选择，以传输所述SCI format n。
  35. 根据权利要求27所述的方法，其中，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源中选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间和资源选择的准备的时间为预设的值。
  36. 根据权利要求27所述的方法，其中，在所述第二终端解调所述指示信令后直接从所述指示信令指示的资源选择传输资源进行SL传输的情况下，所述第二终端收集感知结果的时间、资源选择的准备的时间和准备SL PSCCH/PSSCH所需的时间为预设的值。
  37. 根据权利要求35或36所述的方法，其中，所述方法还包括：所述第二终端和第一终端协商所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输。
  38. 根据权利要求35或36所述的方法，其中，所述第二终端是否可以直接从所述指示信令指示的资源选择传输资源进行SL传输，是按照资源集合配置或预配置的。
  39. 根据权利要求27所述的方法，其中，所述第二终端准备侧链路SL物理侧链路控制信道PSCCH/PSSCH所需的时间上限满足以下其中之一：
    与第一PUSCH准备时间上限相同；
    所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PUSCH准备时间上限相同；
    以第一PUSCH准备时间上限为参考，向上取整到预设时间单元；
    与第一PSSCH准备时间上限相同；
    所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和与第一PSSCH准备时间上限相同；
    以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；
    所述第二终端准备SL PSCCH/PSSCH所需的时间上限和第二终端解调所述指示信令所需的时间上限之和，以第一PSSCH准备时间上限为参考，向上取整到预设时间单元；
    所述第二终端准备SL PSCCH/PSSCH所需的时间上限是协议约定或配置或预配置的；
    根据所述第二终端准备TB的时间确定。
  40. 根据权利要求27所述的方法，其中，在满足第一条件的情况下，所述第一终端或第二终端按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
    其中，所述第一条件包括以下至少一项：
    所述第一终端或第二终端在非授权频谱上进行传输；
    所述第二终端进行基于共享的COT传输，所述第一终端将COT共享给所述第二终端；
    所述第一终端使用侧链路控制信息SCI format n向第二终端发送指示信令；
    所述第二终端直接从所述指示信令指示的资源中选择传输资源进行SL传输；
    所述第一终端与所述第二终端协商按照所述时间间隔或最小时间间隔发送指示信令或进行信息解调；
    按照资源集合配置或预配置。
  41. 一种侧链路信道占用时间COT共享装置，包括：
    第一发送单元，用于向第二终端发送指示信令，所述指示信令用于指示推荐资源，所述指示信令的传输资源和所述推荐资源处于同一个COT内。
  42. 一种侧链路信道占用时间COT共享装置，包括：第一接收单元，用于接收第一终端发送的指示信令，所述指示信令用于指示推荐资源，所述指示信令的传输资源和所述推荐资源处于同一个COT内。
  43. 一种终端，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至25任一项所述的侧链路信道占用时间COT共享方法的步骤，或实现如权利要求26至40任一项所述的侧链路信道占用时间COT共享方法的步骤。
  44. 一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1至25任一项所述的侧链路信道占用时间COT共享方法，或者实现如权利要求26至40任一项所述的侧链路信道占用时间COT共享方法的步骤。
PCT/CN2023/109616 2022-08-01 2023-07-27 侧链路信道占用时间cot共享方法及终端 Ceased WO2024027558A1 (zh)

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