WO2022236829A1 - 载波聚合场景下的资源选择方法、装置、设备及存储介质 - Google Patents

载波聚合场景下的资源选择方法、装置、设备及存储介质 Download PDF

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Publication number
WO2022236829A1
WO2022236829A1 PCT/CN2021/093921 CN2021093921W WO2022236829A1 WO 2022236829 A1 WO2022236829 A1 WO 2022236829A1 CN 2021093921 W CN2021093921 W CN 2021093921W WO 2022236829 A1 WO2022236829 A1 WO 2022236829A1
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Prior art keywords
resource
resources
carrier
resource set
moment
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PCT/CN2021/093921
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English (en)
French (fr)
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WO2022236829A9 (zh
Inventor
丁伊
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to EP21941398.6A priority Critical patent/EP4340485A4/en
Priority to CN202180095876.7A priority patent/CN117016024A/zh
Priority to PCT/CN2021/093921 priority patent/WO2022236829A1/zh
Publication of WO2022236829A1 publication Critical patent/WO2022236829A1/zh
Publication of WO2022236829A9 publication Critical patent/WO2022236829A9/zh
Priority to US18/508,481 priority patent/US20240089925A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular to a resource selection method, device, device, and storage medium in a carrier aggregation scenario.
  • the terminal device can select transmission resources from the resource pool by listening.
  • CA Carrier Aggregation, Carrier Aggregation
  • Embodiments of the present application provide a resource selection method, device, device, and storage medium in a carrier aggregation scenario. Described technical scheme is as follows:
  • a resource selection method in a carrier aggregation scenario is provided, the method is performed by a terminal device, and the method includes:
  • the target resource set includes selected resources on the first carrier indicated at the first moment, and the second moment is located before the first moment.
  • a resource selection method in a carrier aggregation scenario is provided, the method is performed by a terminal device, and the method includes:
  • the first exclusion step determine the resource selection window and resource sensing window corresponding to the first carrier; resources are excluded;
  • the second excluding step during or after performing the first excluding step, according to the selected resources or scheduled resources on the second carrier, perform resource selection in the first resource set exclusion; wherein, the first set of resources refers to a set of resources obtained during or after performing the first exclusion step, after the first exclusion step and the second The resource set obtained in the exclusion step is the second resource set;
  • a resource selection device in a carrier aggregation scenario includes:
  • An evaluation module configured to evaluate target resources in the target resource set according to selected resources or scheduled resources on the second carrier at a second moment
  • the target resource set includes selected resources on the first carrier indicated at the first moment, and the second moment is located before the first moment.
  • a resource selection device in a carrier aggregation scenario includes:
  • An exclusion module configured to perform a first exclusion step: determine a resource selection window and a resource listening window corresponding to the first carrier; Available resources in the resource selection window are excluded;
  • the excluding module is further configured to perform a second excluding step: during or after performing the first excluding step, according to selected resources or scheduled resources on the second carrier, Excluding resources in the first resource set; wherein, the first resource set refers to a resource set obtained during or after performing the first excluding step, after the The resource set obtained by the first excluding step and the second excluding step is a second resource set;
  • a selection module configured to select transmission resources from the second resource set.
  • a terminal device includes a processor
  • the processor is configured to evaluate target resources in the target resource set according to selected resources or scheduled resources on the second carrier at a second moment;
  • the target resource set includes selected resources on the first carrier indicated at the first moment, and the second moment is located before the first moment.
  • a terminal device includes a processor
  • the processor is configured to perform a first exclusion step: determine a resource selection window and a resource listening window corresponding to the first carrier; The available resources in the resource selection window are excluded;
  • the processor is further configured to perform a second excluding step: during or after performing the first excluding step, according to selected resources or scheduled resources on the second carrier, Excluding resources in the first resource set; wherein, the first resource set refers to a resource set obtained during or after performing the first excluding step, after the The resource set obtained by the first excluding step and the second excluding step is a second resource set;
  • the processor is further configured to select a transmission resource from the second resource set.
  • a computer-readable storage medium is provided, and a computer program is stored in the storage medium, and the computer program is used to be executed by a processor, so as to realize resource selection in the above-mentioned carrier aggregation scenario method.
  • a chip is provided, the chip includes a programmable logic circuit and/or a program instruction, and when the chip is running, is used to implement the resource selection method in the above carrier aggregation scenario.
  • a computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and a processor reads from the The computer-readable storage medium reads and executes the computer instructions, so as to implement the resource selection method in the above-mentioned carrier aggregation scenario.
  • This application proposes to evaluate the selected resources on the current carrier according to the latest selected resources or scheduled resources on other carriers at least before transmitting the selected resources of the current carrier. If the currently selected resources cannot be transmitted , triggers resource reselection. In this manner, the problem of inaccurate resource exclusion when the terminal device initially selects resources can be solved, and the accuracy of resource selection in a carrier aggregation scenario is improved.
  • FIG. 1 is a schematic diagram of a network architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a physical layer structure of SL communication provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of time-frequency resource position reservation provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of resource interception and resource selection provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of resource re-evaluation provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of resource selection in a CA scenario provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of resource selection in a CA scenario provided by another embodiment of the present application.
  • FIG. 8 is a flowchart of a resource selection method in a carrier aggregation scenario provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a resource selection scheme involved in the embodiment of FIG. 8;
  • FIG. 10 is a flowchart of a resource selection method in a carrier aggregation scenario provided by another embodiment of the present application.
  • FIG. 11 is a schematic diagram of a resource selection scheme involved in the embodiment of FIG. 10;
  • FIG. 12 is a block diagram of a resource selection device in a carrier aggregation scenario provided by an embodiment of the present application.
  • FIG. 13 is a block diagram of a resource selection device in a carrier aggregation scenario provided by another embodiment of the present application.
  • Fig. 14 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the evolution of the technology and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.
  • FIG. 1 shows a schematic diagram of a network architecture provided by an embodiment of the present application.
  • the network architecture may include: a core network 11 , an access network 12 and a terminal device 13 .
  • the core network 11 includes several core network devices.
  • the functions of the core network equipment are mainly to provide user connections, manage users, and carry out services, and provide an interface to the external network as a bearer network.
  • the core network of the 5G (5th Generation, fifth-generation mobile communication technology) NR (New Radio, new air interface) system may include AMF (Access and Mobility Management Function, access and mobility management function) entities, UPF (User Plane Function, user plane function) entity and SMF (Session Management Function, session management function) entity and other devices.
  • AMF Access and Mobility Management Function, access and mobility management function
  • UPF User Plane Function
  • user plane function User Plane Function
  • SMF Session Management Function, session management function
  • the access network 12 includes several access network devices 14.
  • the access network in the 5G NR system may be called NG-RAN (New Generation-Radio Access Network, New Generation Radio Access Network).
  • the access network device 14 is a device deployed in the access network 12 to provide a wireless communication function for the terminal device 13 .
  • the access network device 14 may include various forms of macro base stations, micro base stations, relay stations, access points and so on.
  • the names of devices with access network device functions may be different.
  • they are called gNodeB or gNB.
  • the name "access network equipment” may change.
  • the above-mentioned devices that provide the wireless communication function for the terminal device 13 are collectively referred to as access network devices.
  • the number of terminal devices 13 is generally multiple, and one or more terminal devices 13 may be distributed in a cell managed by each access network device 14 .
  • the terminal device 13 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of user equipment, mobile stations (Mobile Station, MS) and many more. For convenience of description, the devices mentioned above are collectively referred to as terminal devices.
  • the access network device 14 and the core network device communicate with each other through some air technology, such as the NG interface in the 5G NR system.
  • the access network device 14 and the terminal device 13 communicate with each other through some air technology, such as Uu interface.
  • the terminal device 13 and the terminal device 13 can communicate with each other through a direct connection communication interface (such as PC5 interface) , correspondingly, the communication link established based on the direct communication interface may be called a direct link or SL.
  • SL transmission is the direct communication data transmission between terminal devices through sidelinks. Unlike traditional cellular systems where communication data is received or sent through access network devices, SL transmission has short delay and low overhead.
  • the terminal device in this application refers to any device that communicates using the SL technology.
  • the "5G NR system" in the embodiments of the present disclosure may also be called a 5G system or an NR system, but those skilled in the art can understand its meaning.
  • the technical solution described in the embodiments of the present disclosure can be applied to the 5G NR system, and can also be applied to the subsequent evolution system of the 5G NR system.
  • 3GPP defines two transmission modes: Mode A and Mode B.
  • the transmission resource of the terminal device is allocated by the access network device (such as a base station), and the terminal device transmits communication data on the sidelink according to the transmission resources allocated by the access network device.
  • the access network device such as a base station
  • the transmission resources for a single transmission can be allocated to the terminal equipment, and the transmission resources for semi-static transmission can also be allocated to the terminal equipment.
  • Mode B The terminal device selects transmission resources from the resource pool to transmit communication data. Specifically, the terminal device may select transmission resources from the resource pool by listening, or select transmission resources from the resource pool by random selection.
  • PSCCH Physical Sidelink Control Channel, physical sidelink control channel
  • PSSCH Physical Sidelink Shared Channel, physical sidelink shared channel
  • PSCCH and PSSCH are sent in the same slot.
  • the above-mentioned first lateral control information and second lateral control information may be two lateral control information with different functions.
  • the first sideline control information is carried in the PSCCH, which mainly includes domains related to resource interception, so that other terminal devices can perform resource exclusion and resource selection after decoding.
  • the PSSCH also carries second sidelink control information.
  • the second sidelink control information mainly includes fields related to data demodulation, so as to facilitate other terminal devices to demodulate data in the PSSCH.
  • the terminal device selects the transmission resources to send data by itself.
  • Resource reservation is the premise of resource selection.
  • resource reservation within a TB Transport Block
  • resource reservation between TBs is supported as well as resource reservation between TBs.
  • the terminal device sends the first sideline control information, and uses the "Time resource assignment (time resource assignment)" and "Frequency resource assignment (frequency resource assignment)" fields to indicate the N time-frequency resources of the current TB (including resources currently used for sending).
  • Nmax is equal to 2 or 3.
  • the above N indicated time-frequency resources should be distributed in W time slots.
  • W is equal to 32.
  • the terminal device sends the first sidelink control information in the PSCCH while sending the initial transmission data on the PSSCH, and uses the above two fields to indicate the time-frequency resource positions of the initial transmission and retransmission 1 (i.e.
  • the initial transmission and the retransmission 1 are distributed in 32 time slots in the time domain.
  • the terminal device uses the first sideline control information sent in the PSCCH of retransmission 1 to indicate the time-frequency resource positions of retransmission 1 and retransmission 2, and retransmission 1 and retransmission 2 It is distributed in 32 time slots in the time domain.
  • the "Resource reservation period (resource reservation period)" field is used to reserve resources between TBs.
  • the terminal device uses the "Time resource assignment” and “Frequency resource assignment” fields to indicate the time-frequency resource positions of the initial transmission and retransmission 1 of TB1, record is ⁇ (t 1 , f 1 ), (t 2 , f 2 ) ⁇ .
  • t 1 and t 2 represent the time domain positions of TB1 initial transmission and retransmission 1 resources
  • f 1 and f 2 represent corresponding frequency domain positions.
  • the SCI (Sidelink Control Information, sidelink control information) also indicates the time-frequency resource ⁇ (t 1 +100 ,f 1 ),(t 2 +100,f 2 ) ⁇ , these two resources are used for the transmission of TB2 initial transmission and retransmission 1.
  • the first sideline control information sent in TB1 retransmission 1 also uses the "Resource reservation period" field to reserve the time-frequency resources of TB2 retransmission 1 and retransmission 2.
  • the possible values of the "Resource reservation period" field are 0, 1-99, 100, 200, 300, 400, 500, 600, 700, 800, 900, and 1000 milliseconds.
  • V2X is more flexible.
  • e values are configured, and the terminal device determines possible values according to the used resource pool.
  • the value of e in the resource pool configuration is the resource reservation period set M, for example, e is less than or equal to 16.
  • the above-mentioned inter-TB reservation can be activated or deactivated in units of resource pools.
  • the "Resource reservation period" field is included in the first side line control information.
  • the inter-TB reservation is deactivated, the "Resource reservation period” field is not included in the first side line control information.
  • the value of the "Resource reservation period” field used by the terminal device, that is, the resource reservation period will not change.
  • the control information on one side uses the "Resource reservation period” field to reserve the resources of the next period for the transmission of another TB, so as to achieve periodic semi-persistent transmission.
  • the terminal device can obtain the first sidelink control information sent by other terminal devices by listening to the PSCCH sent by other terminal devices, so as to know the resources reserved by other terminal devices.
  • the terminal device selects resources, it will exclude resources reserved by other terminal devices, thereby avoiding resource collisions.
  • the terminal device In the NR V2X system, in the above mode B, the terminal device needs to select resources by itself.
  • the terminal device triggers resource selection or reselection at time slot n or time slot n is the time slot where the upper layer triggers the physical layer to report the candidate resource set, and the resource selection window starts from n+T 1 to n+T 2 Finish.
  • the terminal device determines T 2min from the value set according to the priority of its data to be sent. For example, when the subcarrier interval is 15kHz, the terminal device determines T 2min from the set ⁇ 1, 5, 10, 20 ⁇ according to the priority of its own data to be sent.
  • T 2min is greater than or equal to the remaining delay budget of the service
  • T 2 is equal to the remaining delay budget of the service.
  • the remaining delay budget is the difference between the time corresponding to the data delay requirement and the current time.
  • the delay requirement is 50 milliseconds.
  • a time slot is 1 millisecond. If the current time is time slot n, the remaining delay budget is 50 milliseconds. If the current time is time slot n+20 , the remaining delay budget is 30 milliseconds.
  • the terminal device performs resource monitoring from nT 0 to nT proc,0 (nT proc,0 is not included), and the value of T 0 is 100 or 1100 milliseconds.
  • T proc,0 is 1, 1, 2, 4 time slots.
  • a terminal device listens to the first sideline control information sent by other terminal devices in each time slot (except its own sending time slot).
  • time slot n triggers resource selection or reselection
  • the terminal device uses nT 0 to The result of nT proc,0 resource snooping.
  • Step 1 The terminal device takes all the available resources belonging to the resource pool used by the terminal device in the resource selection window as the resource set A, and any resource in the set A is recorded as R(x, y), and x and y respectively indicate the frequency domain of the resource location and time domain location. Note that the initial quantity of resources in collection A is M total .
  • the terminal device judges whether the resource R(x, y) or a series of periodic resources corresponding to the resource R(x, y) is the same as the time slot determined in Step 1-1 according to the unlistened time slot or in Step 1-2 according to The resources determined by the intercepted first lateral control information overlap, and if they overlap, the resource R(x,y) is excluded from the resource set A.
  • P rx is one of the resource reservation periods allowed by the resource pool used by the terminal device.
  • the terminal device will judge whether the Q time slots corresponding to each reserved period overlap with the resource R(x, y) or a series of periodic resources corresponding to the resource R(x, y). A resource R(x,y) is excluded from A.
  • the terminal device may not perform the above Step 1-1.
  • Step 1-2 If the terminal device detects the first sidelink control information transmitted in the PSCCH within the time slot m of the resource listening window, measure the SL-RSRP (Sidelink Reference Signal Received Power, sidelink reference signal) of the PSCCH received power) or the SL-RSRP of the PSSCH scheduled by the PSCCH (that is, the SL-RSRP of the PSSCH transmitted in the same time slot as the PSCCH).
  • SL-RSRP Systemlink Reference Signal Received Power, sidelink reference signal
  • the terminal device will reserve resources according to time slot m and the detected first sideline control information.
  • the resource reservation period is used as an interval to determine corresponding Q time slots.
  • the terminal device assumes that it has also received the first sideline control information with the same content in the Q time slots.
  • the terminal device will determine the resource and resource R indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the first sidelink control information received in time slot m and the assumed Q pieces of first sidelink control information received.
  • T scal is equal to the value after converting T 2 into milliseconds.
  • P rx is the resource reservation period carried in the sensed first sideline control information.
  • the terminal device when the resource pool used by the terminal device activates the reservation between TBs, if the terminal device detects the first sideline control in the PSCCH on the resource E(v,m) of time slot m information, the resource reservation period in the first sideline control information is P rx , assuming that the Q value is calculated as 1, the terminal device will assume that the first sideline control information with the same content is also received on the time slot m+P rx . The terminal device will judge the first sideline control information received in time slot m and the "Time resource assignment" and "Frequency resource assignment" fields of the first sideline control information received in time slot m+P rx .
  • resource set A Exclude resource R(x,y) in .
  • the terminal device If the SL-RSRP measured by the terminal device is greater than the SL-RSRP threshold, and the resource pool used by the terminal device deactivates resource reservation between TBs, the terminal device only judges the "Time resource assignment" and "Frequency resource assignment" fields indicate whether the resource overlaps with the resource R(x,y) or a series of resources corresponding to the resource R(x,y), and if so, excludes the resource R from the resource set A( x,y).
  • the terminal device when the resource pool used by the terminal device deactivates the inter-TB reservation, if the terminal device detects the first side row in the PSCCH on the resource E(v,m) of time slot m control information, the terminal device judges that resources 1, 2, and 3 indicated by the fields "Time resource assignment” and "Frequency resource assignment" in the first side line control information are related to resource R(x, y) or resource R(x, y) Whether the corresponding series of periodic resources overlap, and if they overlap and satisfy the RSRP condition, the resource R(x,y) is excluded from the resource set A.
  • resource set A If the remaining resources in resource set A are less than M total *X after the above resources are excluded, raise the SL-RSRP threshold by 3dB and execute Step 1 again.
  • the physical layer reports the resource set A after resource exclusion as a candidate resource set to the upper layer.
  • Step 2 The upper layer randomly selects resources from the reported candidate resource set to send data. That is, the terminal device randomly selects a resource from the candidate resource set to send data.
  • the above RSRP threshold is determined by the priority P1 carried in the PSCCH sensed by the terminal device and the priority P2 of the data to be sent by the terminal device.
  • the configuration of the resource pool used by the terminal device includes an SL-RSRP threshold table, and the SL-RSRP threshold table includes SL-RSRP thresholds corresponding to all priority combinations.
  • the configuration of the resource pool can be network configuration or pre-configuration.
  • the SL-RSRP thresholds corresponding to different priority combinations are denoted by ⁇ ij , where i in ⁇ ij is priority j is the value of the priority level P1, and j is the value of the priority level P2.
  • the terminal device When the terminal device detects the PSCCH sent by other terminal devices, obtains the priority P1 carried in the first sidelink control information transmitted in the PSCCH and the priority P2 of the data to be sent, and the terminal device determines the SL by looking up table 1 - RSRP threshold.
  • the terminal device uses the measured PSCCH-RSRP or the PSSCH-RSRP scheduled by the PSCCH to compare with the SL-RSRP threshold depends on the resource pool configuration of the resource pool used by the terminal device.
  • the configuration of the resource pool can be network configuration or pre-configuration.
  • the above X, the possible values of X are ⁇ 20%, 35%, 50% ⁇ .
  • the configuration of the resource pool used by the terminal device includes the corresponding relationship between the priority and the above possible values, and the terminal device determines the value of X according to the priority of the data to be sent and the corresponding relationship.
  • the resource pool configuration can be configured by the network or pre-configured.
  • NR-V2X also supports re-evaluation (re-evaluation) for resources that have been selected but not indicated by sending the first sidelink control information after resource selection is completed.
  • resources x, y, z, u, and v are time-frequency resources selected by the terminal device in time slot n, and resource y is located in time slot m.
  • the terminal device executes at least in time slot mT 3
  • the above Step 1 is performed once, that is, at least in the time slot mT3 , the resource selection window and the resource listening window are determined according to the above, and the above Step 1 is executed to exclude resources in the resource selection window to obtain a candidate resource set.
  • the terminal device performs the above Step 2 to reselect the time-frequency resources in the resource z and u that are not in the candidate resource set.
  • the terminal device can also reselect any selected But the resources not indicated by sending the first side row control information, for example, any one or more resources among the resources z, u and v.
  • the above T 3 is equal to T proc,1 .
  • the dotted arrow indicates that the first lateral control information indication is about to be sent, and the solid arrow indicates that the first lateral control information indication has been sent.
  • the above introduction is an SL communication method in NR-V2X, that is, the terminal device independently selects transmission resources through resource monitoring, and performs data transmission on the sidelink by itself.
  • This SL communication method can also be applied to various SL communications such as direct communication between handheld terminals and direct communication between pedestrians and vehicles.
  • LTE-V2X sidelink sidelink carrier aggregation (Carrier Aggregation, referred to as CA) is supported, and terminal equipment can transmit data in parallel on one or more carriers, thereby improving the throughput of the sidelink transmission system.
  • CA Carrier Aggregation
  • the terminal device in the above-mentioned mode B, the terminal device also needs to exclude resources according to resource listening and/or non-monitoring subframes, obtain candidate resource sets, and then select resources from the candidate resource sets to send data. Due to some conditions, after obtaining the candidate resource set, it is necessary to further exclude candidate resources that cannot be transmitted by the terminal device from the candidate resource set before reporting to the high layer.
  • the terminal device triggers resource selection or reselection in subframe n, and selects resources on carrier 1 .
  • the terminal device determines a resource selection window and a resource listening window, performs resource exclusion, and obtains a candidate resource set, where the candidate resource set includes resource R, resource V, and resource U.
  • the terminal device further excludes candidate resources that cannot be used for transmission from the candidate resource set.
  • Condition 1 The number of simultaneous transmission carriers supported by the terminal equipment
  • a terminal device only supports transmission on two carriers at the same time, and the terminal device has selected resources E and P on carrier 2 and carrier 3 respectively, and resources E and P overlap resource R in the time domain, so the terminal device Resource R needs to be excluded from the candidate resource set. The reason is that if the resource R is selected, the terminal equipment needs to transmit on three carriers at the same time, which exceeds the capability of the terminal equipment.
  • a terminal device does not support aggregation or combination on carrier 1 and carrier 2, that is, it cannot transmit on carrier 1 when transmitting on carrier 2. If the terminal device selects resource E on carrier 2, and resource E and resource R are at the same time domain overlap, the terminal device needs to exclude the resource R from the candidate resource set.
  • the terminal device does not support aggregation or combination on carrier 1 and carrier 2, that is, it cannot transmit on carrier 1 when transmitting on carrier 2. If it needs to transmit on carrier 1 after the transmission on carrier 2 is completed, the device should be readjusted Hardware or RF, then transmitted on Carrier 1. During the readjustment time, the end device cannot transmit. For example, after the terminal device transmits on resource E of carrier 2, it needs to perform radio frequency adjustment between subframes t i to t j , and resource V overlaps with subframes t i to t j in the time domain, then the terminal device needs to start from the candidate resource Resource V is excluded from the set.
  • the terminal device supports two sets of radio frequencies, or called two radio frequency chains (RF Chain).
  • Radio frequency chain 1 is used for transmission on carrier 1 and carrier 2
  • radio frequency chain 2 is used for transmission on carrier 3. Therefore, the terminal device needs to adjust the radio frequency chain 1 to support the transmission of the two carriers.
  • the terminal device if the time for the terminal device to perform radio frequency readjustment after transmission on the resource E of the carrier 2 overlaps with the resource V in the time domain, the terminal device Exclude resource V from the set of candidate resources.
  • the resource selection scheme in the CA scenario in LTE-V2X is introduced above.
  • the standard has not discussed the resource selection scheme in the CA scenario in NR-V2X.
  • a TB can be transmitted up to 32 times, and it supports HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic repeat request) retransmission.
  • HARQ Hybrid Automatic Repeat reQuest, hybrid automatic repeat request
  • the sending end may release the unused selected resources.
  • the terminal device triggers resource selection at time slot n, selects resources on carrier 1, and determines a candidate resource set.
  • the terminal device On carrier 2, the terminal device has selected a large number of resources for one TB. If resources that cannot be sent in the candidate resource set are excluded according to the selected resources on the carrier 2, a large number of candidate resources will be excluded.
  • time slot n if the terminal device receives ACK on carrier 2, the unused selected resources are released, which is equivalent to giving up many resources that could have been used by the terminal device when performing resource selection on time slot n on carrier 1.
  • the terminal device After the resource selection is completed, the terminal device also supports re-selection of the selected resources through re-evaluation (re-evaluation) and other mechanisms. Also for example in FIG. 7 , the terminal device triggers resource selection at time slot n, selects resources on carrier 1, and determines a candidate resource set.
  • the candidate resource set includes resources R, V, and U.
  • the terminal device excludes the candidate resource U based on the selected resource P on the carrier 2 . However, if the terminal device reselects the resource P after the time slot n, this is also equivalent to excluding the candidate resource U that could have been used when the terminal device selects resources in the time slot n.
  • this application draws on the idea of re-evaluation (re-evaluation) mechanism in NR-V2X, and proposes that at least before transmitting the selected resources of the current carrier (such as in the instruction or before transmitting the selected resources of the current carrier), according to the latest selected resources or scheduled resources on other carriers, evaluate the selected resources on the current carrier, and if it is impossible to transmit on the currently selected resources, trigger Resource reselection.
  • re-evaluation re-evaluation
  • FIG. 8 shows a flowchart of a resource selection method in a carrier aggregation scenario provided by an embodiment of the present application.
  • the method can be applied to the network architecture shown in FIG. 1 , for example, the method can be executed by a terminal device.
  • the method may include the steps of:
  • Step 810 Evaluate the target resources in the target resource set according to the selected resources or scheduled resources on the second carrier at the second moment; wherein, the target resource set includes the scheduled resources on the first carrier indicated at the first moment. Select resources, the second moment is before the first moment.
  • the first moment is a time unit where any selected resource is located.
  • the time unit may be a time slot, or a subframe or an OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbol, etc., which is not limited in this application.
  • a certain moment in this application may refer to the time point corresponding to the moment, or may refer to the time unit where the moment is located, such as the time slot, subframe or OFDM symbol to which the moment belongs.
  • the first moment may be time slot m
  • the second moment is before the first moment, for example, the second moment may be time slot mT 3 .
  • the terminal device triggers resource selection (or resource reselection, or high-layer triggers the physical layer to report the candidate resource set) at time slot n on carrier 1, and the terminal device selects Resources x, y, z, u and v.
  • the terminal device For the resources in the target resource set (the target resource set includes the selected resources on carrier 1 indicated by time slot m), the terminal device in time slot mT3 according to the selected resources on carrier 2 and/or carrier 3 or the scheduled resources, evaluating the target resource in the target resource set, for example, the terminal device judges whether to reselect the target resource.
  • the second moment is the first moment minus the first offset, or the second moment is the first moment minus the first offset and the second offset.
  • the first time slot m as an example, in an example, the second time slot is mT 3 , and T 3 is the first offset, for example, T 3 is a value greater than 0.
  • the second moment is the time slot mT 3 -Tr
  • T 3 is the first offset
  • T r is the second offset
  • T 3 is if T 3 is a value greater than 0, the value of T r Instructions can be found below.
  • FIG. 9 only the case where the second moment is the time slot mT 3 is shown as an example, and the case where the second moment is the time slot mT 3 -Tr is not shown in FIG. 9 .
  • the first offset T 3 is a preset value stipulated in a standard, or is configured by the network, or is pre-configured, or depends on the implementation of the terminal device.
  • the first offset T3 is an offset determined from multiple candidate offsets based on subcarrier spacing.
  • the first offset is T proc,0 or T proc,1
  • the T proc,0 and T proc,1 can refer to the introduction in the above content.
  • the second offset T r is a random offset.
  • the second offset T r is greater than 0, and/or, the second offset T r is less than or equal to T max , where T max is a preset value specified by the standard, or configured by the network, or preset configuration, or depending on the implementation of the end device.
  • the second carrier is different from the first carrier, and the second carrier may be one carrier, or may include multiple carriers.
  • the first carrier is carrier 1
  • the second carrier may include carrier 2 and/or carrier 3 .
  • the set of target resources includes one of the following:
  • Selected resources on the first carrier used for transmission at the first moment for example, in Figure 9, the first moment is time slot m, and the target resource set includes resources on carrier 1 used for transmission at time slot m resource y;
  • the indicated selected resource refers to the selected resource indicated by the first sideline control information.
  • the target resource set includes resources y, z, and u indicated by sending the first side-line control information on resource y; in one example, the indicated selected resources are selected through "Time resource assignment " and the selected resources indicated by the "Frequency resource assignment” field, for example, in Figure 9, the first moment is m, the target resource set includes the resource y by sending the first side line control information, and through the first side line The resources y, z and u indicated by the "Time resource assignment" and "Frequency resource assignment" fields in the control information.
  • the target resource set includes "Time The resource assignment" and "Frequency resource assignment” fields indicate the selected resource on the first carrier that is not indicated by the first sideline control information before the first moment.
  • the selected resource on the first carrier indicated at the first moment and indicated before the first moment for example, in FIG.
  • step 810 includes the following steps:
  • the first exclusion step determine the resource selection window and resource listening window corresponding to the first carrier at the second moment; resources are excluded;
  • the second excluding step During the process of executing the first excluding step or after performing the first excluding step, according to the selected resources or scheduled resources on the second carrier, the resources in the first resource set are excluded; wherein, The first set of resources refers to the set of resources obtained during the execution of the first elimination step or after the execution of the first elimination step, and the resource set obtained through the first elimination step and the second elimination step is the second resource collection;
  • the target resource in the target resource set if the target resource is not in the second resource set, reselect the target resource in the second resource set.
  • the first exclusion step can be Step 1 introduced above, and the detailed description of Step 1 can be found above, and only a general description of Step 1 is given here to indicate the timing between each step relation:
  • Step 1 Perform resource exclusion on the resource set A according to the unlistened time slots in the resource listening window (Step 1-1).
  • this step can be decided to execute or not according to whether the resource pool activates inter-TB reservation ;
  • the terminal device executes the second elimination step. That is, the terminal device executes the second exclusion step during or after executing Step 1.
  • the first elimination step includes S1 ⁇ S4 in the above Step 1.
  • the execution sequence can be S1, the second elimination step, S2, S3, S4, Or it may also be S1, S2, S3, the second elimination step, S4, etc., which are not limited in this application.
  • the execution sequence can be Step 1 (including S1, S2, S3 and S4 in turn), the second exclusion step, wherein, Step 1 may be executed once, or may Performed multiple times, the second exclusion step may be performed only once.
  • the second excluding step is to exclude resources in the first resource set.
  • the first resource set includes one of the following:
  • a collection of all available resources in the resource selection window for example, a collection of all available resources belonging to the resource pool used by the terminal device in the resource selection window;
  • the first resource set can be the above-mentioned initial resource set A, or the resource set A after Step 1-1 is executed, or the resource set A after Step 1-2 is executed, or Step 1 is executed The subsequent resource collection A.
  • the resources targeted by the second exclusion step include one of the following:
  • a resource in the time domain position in the first resource set is a positive integer; where a can be a preset value specified by the standard, or configured by the network, or pre-configured, or depends on Implementation of terminal equipment;
  • any one of the first b% resources in the time domain position in the first resource set where b is a value greater than 0; wherein, b can be a preset value specified by a standard, or configured by the network, or pre-configured, or depends on the implementation of the terminal device; optionally, b% is relative to the quantity of resources contained in the first resource set;
  • the third moment is the second moment plus the third offset; combined with the above introduction, the second moment is Time slot mT 3 or time slot mT 3 -Tr, then the third moment is time slot mT 3 +c or time slot mT 3 -Tr+c, c represents the third offset, and c can be a preset value specified in the standard , or configured by the network, or pre-configured, or depends on the implementation of the end device.
  • the third moment is greater than or equal to the moment corresponding to the last resource in the target resource set in the time domain, so as to ensure that the resources in the target resource set can be evaluated more comprehensively during the resource exclusion process , to determine whether it conflicts with selected or scheduled resources on other carriers.
  • the terminal device determines that a certain resource in the first resource set cannot be used for transmission on the first carrier according to the selected resources or scheduled resources on the second carrier, the terminal device performs a check on the resource in the first resource set exclude.
  • the terminal device determines that the resources in the first resource set cannot be used for transmission on the first carrier.
  • the factors include at least one of the following:
  • the terminal device only supports transmission on two carriers at the same time, and the terminal device has selected resources o and a on carrier 2 and carrier 3 respectively, and resource o and a are the same as the resources in the first resource set If overlapped in the time domain, the terminal device determines that transmission on the resource of carrier 1 is not supported, and needs to exclude the resource from the first resource set.
  • the terminal device does not support aggregation or combination on carrier 1 and carrier 2, that is, it cannot transmit on carrier 1 when transmitting on carrier 2. If the terminal device selects resource o on carrier 2, and resource o and Resources in the first resource set overlap in the time domain, and the terminal device determines that transmission on the resource of carrier 1 is not supported, and needs to exclude the resource from the first resource set.
  • the terminal device does not support aggregation or combination on carrier 1 and carrier 2, that is, it cannot transmit on carrier 1 when transmitting on carrier 2, and if it needs to transmit on carrier 1 after the transmission on carrier 2 is completed,
  • the device hardware or radio frequency should be adjusted before transmitting on carrier 1.
  • the end device cannot transmit.
  • the terminal device After the terminal device transmits on the resource o of the carrier 2, it needs to perform radio frequency adjustment between the time slots t i to t j . If the resources in the first resource set overlap with the time slots t i to t j in the time domain, the terminal device The device determines that transmission on the resource of carrier 1 is not supported, and the resource needs to be excluded from the first resource set.
  • the terminal device supports two sets of radio frequencies, or called two radio frequency chains (RF Chain).
  • Radio frequency chain 1 is used for transmission on carrier 1 and carrier 2
  • radio frequency chain 2 is used for transmission on carrier 3. Therefore, the terminal device needs to adjust the radio frequency chain 1 to support the transmission of the two carriers.
  • the terminal device determines that transmission on the resource of carrier 1 is not supported, and needs to exclude the resource from the first resource set.
  • the resource set obtained through the first and second exclusion steps is referred to as the second resource set.
  • the terminal device reselects the target resource in the second resource set.
  • the target resource set includes resource y in FIG. 9 , and if resource y is not included in the second resource set obtained through the first and second exclusion steps, resource y is reselected from the second resource set.
  • the target resource set includes resources y, z, and u in Figure 9, if resource z is not in the second resource set obtained through the first and second exclusion steps, then reselect resources in the second resource set z.
  • the target resource set includes resources z and u in Figure 9, if neither resource z nor u is in the second resource set obtained through the first exclusion step and the second exclusion step, reselect in the second resource set Resources z and u.
  • first elimination step and second elimination step may be performed once, or may be performed multiple times.
  • Step 1 Take the execution of the second elimination step in the process of executing the first elimination step (i.e. Step 1) as an example.
  • Execute S1, S2, S3, the second exclusion step, S4, etc.) and the remaining resources in the resource set obtained after executing S1, S2, S3, etc.) are less than M total *X, then increase the RSRP threshold by a certain value, and then re-execute a new round of exclusion steps, and finally pass
  • M total *X the remaining resources in the finally obtained resource set are greater than or equal to M total *X, then this resource set is determined as the second resource set.
  • Step 1 may be executed multiple times, and after obtaining the resource set with remaining resources greater than or equal to M total *X Afterwards, the second exclusion step is performed once, and the resource set obtained through the second exclusion step is the second resource set. It should be noted that if the second exclusion step is executed during the execution of the first exclusion step (i.e. Step 1) as an example, then due to the existence of S4, Step 1 may be executed multiple times, and after obtaining the resource set with remaining resources greater than or equal to M total *X Afterwards, the second exclusion step is performed once, and the resource set obtained through the second exclusion step is the second resource set. It should be noted that if the second exclusion step is executed during the execution of the first exclusion step (i.e.
  • Step 1) the number of resources in the second resource set is greater than or equal to M total *X; if the first exclusion is performed After the step (that is, Step1), the second exclusion step is performed, and the number of resources in the second resource set is not necessarily greater than or equal to M total *X, and may also be less than M total *X.
  • the above step 810 includes the following steps: for the target resource in the target resource set, if at the second moment, according to the selected resource or the scheduled resource on the second carrier, it is determined that the target resource on the first carrier If the target resource is not supported for transmission, reselect the target resource.
  • the above terminal device determines, according to the selected resource or the scheduled resource on the second carrier, that the factors that do not support transmission using the target resource on the first carrier include at least one of the following:
  • the terminal device only supports transmission on two carriers at the same time, and the terminal device has selected resource o and a on carrier 2 and carrier 3 respectively, and resource o and a are the same as the target resource in the target resource set If overlapped in the time domain, the terminal device determines that transmission on the target resource of carrier 1 is not supported, and reselects the target resource in the target resource set.
  • the terminal device does not support aggregation or combination on carrier 1 and carrier 2, that is, it cannot transmit on carrier 1 when transmitting on carrier 2. If the terminal device selects resource o on carrier 2, and resource o and If the target resources in the target resource set overlap in the time domain, the terminal device judges that transmission on the target resource of carrier 1 is not supported, and reselects the target resource in the target resource set.
  • the terminal device does not support aggregation or combination on carrier 1 and carrier 2, that is, it cannot transmit on carrier 1 when transmitting on carrier 2, and if it needs to transmit on carrier 1 after the transmission on carrier 2 is completed,
  • the device hardware or radio frequency should be adjusted before transmitting on carrier 1.
  • the end device cannot transmit.
  • the terminal equipment After the terminal equipment transmits on resource o of carrier 2, it needs to perform radio frequency adjustment between time slots t i to t j . If the target resource in the target resource set overlaps with time slots t i to t j in the time domain, the terminal equipment The device determines that transmission on the target resource of carrier 1 is not supported, and reselects the target resource in the target resource set.
  • the terminal device supports two sets of radio frequencies, or called two radio frequency chains (RF Chain).
  • Radio frequency chain 1 is used for transmission on carrier 1 and carrier 2
  • radio frequency chain 2 is used for transmission on carrier 3. Therefore, the terminal device needs to adjust the radio frequency chain 1 to support the transmission of the two carriers.
  • the terminal device determines that transmission on the target resource of carrier 1 is not supported, and reselects the target resource in the target resource set.
  • the target resource set includes resource y, if the terminal device determines that it does not support transmission on resource y of carrier 1 according to selected resources or scheduled resources on other carriers (including carrier 2 and/or carrier 3) , then the terminal device reselects resource y.
  • the target resource set includes resources y, z, and u. If the terminal device determines that the resources on carrier 1 are not supported according to the selected resources or scheduled resources on other carriers (including carrier 2 and/or carrier 3), If transmission is performed on resource z, the terminal device reselects resource z.
  • the target resource set includes resources y, z, and u. If the terminal device determines that the resources on carrier 1 are not supported according to the selected resources or scheduled resources on other carriers (including carrier 2 and/or carrier 3), If transmission is performed on resource z and resource u, the terminal device reselects resource z and resource u.
  • the terminal device reselects the target resources, including the following steps:
  • the first exclusion step determining the resource selection window and the resource listening window corresponding to the first carrier; based on the listening result in the resource listening window and/or the unlistened time slot, excluding the available resources in the resource selection window;
  • the second excluding step During the process of executing the first excluding step or after performing the first excluding step, according to the selected resources or scheduled resources on the second carrier, the resources in the first resource set are excluded; wherein, The first set of resources refers to the set of resources obtained during the execution of the first elimination step or after the execution of the first elimination step, and the resource set obtained through the first elimination step and the second elimination step is the second resource collection;
  • the first exclusion step can be Step 1 introduced above, and the detailed description of Step 1 can be found above, and only a general description of Step 1 is given here to indicate the timing between each step relation:
  • Step 1 Perform resource exclusion on the resource set A according to the unlistened time slots in the resource listening window (Step 1-1).
  • this step can be decided to execute or not according to whether the resource pool activates inter-TB reservation ;
  • the terminal device executes the second elimination step. That is, the terminal device executes the second exclusion step during or after executing Step 1.
  • the first elimination step includes S1-S4 in the above Step 1.
  • the execution sequence can be S1, the second elimination step, S2, S3, S4, Or it may also be S1, S2, S3, the second elimination step, S4, etc., which are not limited in this application.
  • the execution sequence can be Step 1 (including S1, S2, S3 and S4 in turn), the second exclusion step, wherein, Step 1 may be executed once, or may Performed multiple times, the second exclusion step may be performed only once.
  • the second excluding step is to exclude resources in the first resource set.
  • the first resource set includes one of the following:
  • a collection of all available resources in the resource selection window for example, a collection of all available resources belonging to the resource pool used by the terminal device in the resource selection window;
  • the first resource set can be the above-mentioned initial resource set A, or the resource set A after Step 1-1 is executed, or the resource set A after Step 1-2 is executed, or Step 1 is executed The subsequent resource collection A.
  • the resources targeted by the second exclusion step include one of the following:
  • a resource in the time domain position in the first resource set is a positive integer; where a can be a preset value specified by the standard, or configured by the network, or pre-configured, or depends on Implementation of terminal equipment;
  • any one of the first b% resources in the time domain position in the first resource set where b is a value greater than 0; wherein, b can be a preset value specified by a standard, or configured by the network, or pre-configured, or depends on the implementation of the terminal device; optionally, b% is relative to the quantity of resources contained in the first resource set;
  • the third moment is the second moment plus the third offset; combined with the above introduction, the second moment is Time slot mT 3 or time slot mT 3 -Tr, then the third moment is time slot mT 3 +c or time slot mT 3 -Tr+c, c represents the third offset, and c can be a preset value specified in the standard , or configured by the network, or pre-configured, or depends on the implementation of the end device.
  • the third moment is greater than or equal to the moment corresponding to the last resource in the target resource set in the time domain.
  • the terminal device determines that a certain resource in the first resource set cannot be used for transmission on the first carrier according to the selected resources or scheduled resources on the second carrier, the terminal device performs a check on the resource in the first resource set exclude.
  • the terminal device determines that the resources in the first resource set cannot be used for transmission on the first carrier.
  • the factors include at least one of the following:
  • the resource set obtained through the first and second exclusion steps is referred to as the second resource set.
  • the terminal device After the terminal device obtains the second resource set, for the target resource in the target resource set that does not support transmission on the first carrier, the terminal device reselects the target resource in the second resource set.
  • first elimination step and second elimination step may be performed once, or may be performed multiple times.
  • Step 1 Take the execution of the second elimination step in the process of executing the first elimination step (i.e. Step 1) as an example.
  • Execute S1, S2, S3, the second exclusion step, S4, etc.) and the remaining resources in the resource set obtained after executing S1, S2, S3, etc.) are less than M total *X, then increase the RSRP threshold by a certain value, and then re-execute a new round of exclusion steps, and finally pass
  • M total *X the remaining resources in the finally obtained resource set are greater than or equal to M total *X, then this resource set is determined as the second resource set.
  • Step 1 may be executed multiple times, and after obtaining the resource set with remaining resources greater than or equal to M total *X Afterwards, the second exclusion step is performed once, and the resource set obtained through the second exclusion step is the second resource set. It should be noted that if the second exclusion step is executed during the execution of the first exclusion step (i.e. Step 1) as an example, then due to the existence of S4, Step 1 may be executed multiple times, and after obtaining the resource set with remaining resources greater than or equal to M total *X Afterwards, the second exclusion step is performed once, and the resource set obtained through the second exclusion step is the second resource set. It should be noted that if the second exclusion step is executed during the execution of the first exclusion step (i.e.
  • Step 1) the number of resources in the second resource set is greater than or equal to M total *X; if the first exclusion is performed After the step (that is, Step1), the second exclusion step is performed, and the number of resources in the second resource set is not necessarily greater than or equal to M total *X, and may also be less than M total *X.
  • This application proposes that at least before transmitting the selected resources of the current carrier (such as before indicating or transmitting the selected resources of the current carrier), according to the latest selected resources or scheduled resources on other carriers, the selected resources on the current carrier Resources are evaluated, and resource reselection is triggered if sending cannot be made on the currently selected resource. In this manner, the problem of inaccurate resource exclusion when the terminal device initially selects resources can be solved, and the accuracy of resource selection in a carrier aggregation scenario is improved.
  • FIG. 10 shows a flowchart of a resource selection method in a carrier aggregation scenario provided by another embodiment of the present application.
  • the method can be applied to the network architecture shown in FIG. 1 , for example, the method can be executed by a terminal device.
  • the method may include the following steps (1010-1030):
  • Step 1010 the first exclusion step: determine the resource selection window and resource listening window corresponding to the first carrier; based on the listening result in the resource listening window and/or the unlistened time slot, check the available resources in the resource selection window to exclude.
  • Step 1020 the second exclusion step: during or after the execution of the first exclusion step, according to the selected resources or scheduled resources on the second carrier, the resources in the first resource set are excluded ;
  • the first resource set refers to the resource set obtained during the execution of the first exclusion step or after the execution of the first exclusion step, and the resource set obtained through the first exclusion step and the second exclusion step is the second resource collection .
  • Step 1030 select transmission resources from the second resource set.
  • the terminal device triggers resource selection (or resource reselection, or a high layer triggers a physical layer to report a candidate resource set) at time slot n.
  • the terminal device determines a resource listening window from nT 0 to nT proc,0 (optionally, nT proc,0 is not included), and a resource selection window from n+T 1 to n+T 2 .
  • the terminal device executes the first exclusion step, and executes the second exclusion step to exclude the resources in the first resource set during the execution of the first exclusion step or after the execution of the first exclusion step.
  • the first exclusion step can be Step 1 introduced above, and the detailed description of Step 1 can be found above, and only a general description of Step 1 is given here to indicate the timing between each step relation:
  • Step 1 Perform resource exclusion on the resource set A according to the unlistened time slots in the resource listening window (Step 1-1).
  • this step can be decided to execute or not according to whether the resource pool activates inter-TB reservation ;
  • the terminal device executes the second elimination step. That is, the terminal device executes the second exclusion step during or after executing Step 1.
  • the first elimination step includes S1-S4 in the above Step 1.
  • the execution sequence can be S1, the second elimination step, S2, S3, S4, Or it may also be S1, S2, S3, the second elimination step, S4, etc., which are not limited in this application.
  • the execution sequence can be Step 1 (including S1, S2, S3 and S4 in turn), the second exclusion step, wherein, Step 1 may be executed once, or may Performed multiple times, the second exclusion step may be performed only once.
  • the second excluding step is to exclude resources in the first resource set.
  • the first resource set includes one of the following:
  • a collection of all available resources in the resource selection window for example, a collection of all available resources belonging to the resource pool used by the terminal device in the resource selection window;
  • the first resource set can be the above-mentioned initial resource set A, or the resource set A after Step 1-1 is executed, or the resource set A after Step 1-2 is executed, or Step 1 is executed The subsequent resource collection A.
  • the resources targeted by the second exclusion step include one of the following:
  • a resource in the time domain position in the first resource set is a positive integer; where a can be a preset value specified by the standard, or configured by the network, or pre-configured, or depends on Implementation of terminal equipment;
  • any one of the first b% resources in the time domain position in the first resource set where b is a value greater than 0; wherein, b can be a preset value specified by a standard, or configured by the network, or pre-configured, or depends on the implementation of the terminal device; optionally, b% is relative to the quantity of resources contained in the first resource set;
  • the fourth moment is the trigger moment plus the fourth offset, where the trigger moment includes one of the following: trigger resource The moment of selection, the moment of triggering resource reselection, and the moment when the higher layer triggers the physical layer to report the set of candidate resources.
  • the fourth offset is a value greater than 0, and the fourth offset may be a preset value specified in a standard, or configured by the network, or pre-configured, or depends on the implementation of the terminal device.
  • the terminal device determines that a certain resource in the first resource set cannot be used for transmission on the first carrier according to the selected resources or scheduled resources on the second carrier, the terminal device performs a check on the resource in the first resource set exclude.
  • the terminal device determines that the resources in the first resource set cannot be used for transmission on the first carrier.
  • the factors include at least one of the following:
  • the terminal device only supports transmission on two carriers at the same time, and the terminal device has selected resources o and a on carrier 2 and carrier 3 respectively, and resources o and a are consistent with resources in the first resource set If overlapped in the time domain, the terminal device determines that transmission on the resource of carrier 1 is not supported, and needs to exclude the resource from the first resource set.
  • the terminal device does not support aggregation or combination on carrier 1 and carrier 2, that is, it cannot transmit on carrier 1 when transmitting on carrier 2. If the terminal device selects resource o on carrier 2, and resource o and Resources in the first resource set overlap in the time domain, and the terminal device determines that transmission on the resource of carrier 1 is not supported, and needs to exclude the resource from the first resource set.
  • the terminal device does not support aggregation or combination on carrier 1 and carrier 2, that is, it cannot transmit on carrier 1 when transmitting on carrier 2, and if it needs to transmit on carrier 1 after the transmission on carrier 2 is completed,
  • the device hardware or radio frequency should be adjusted before transmitting on carrier 1.
  • the end device cannot transmit.
  • the terminal device After the terminal device transmits on the resource o of the carrier 2, it needs to perform radio frequency adjustment between the time slots t i to t j . If the resources in the first resource set overlap with the time slots t i to t j in the time domain, the terminal device The device determines that transmission on the resource of carrier 1 is not supported, and the resource needs to be excluded from the first resource set.
  • the terminal device supports two sets of radio frequencies, or called two radio frequency chains (RF Chain).
  • Radio frequency chain 1 is used for transmission on carrier 1 and carrier 2
  • radio frequency chain 2 is used for transmission on carrier 3. Therefore, the terminal device needs to adjust the radio frequency chain 1 to support the transmission of the two carriers.
  • the terminal device determines that transmission on the resource of carrier 1 is not supported, and needs to exclude the resource from the first resource set.
  • the resource set obtained through the first and second exclusion steps is referred to as the second resource set.
  • the terminal device selects a transmission resource from the second resource set, for example randomly selects a transmission resource from the second resource set.
  • the physical layer reports the second resource set to a high layer, and the high layer selects transmission resources from the second resource set, for example, the high layer randomly selects transmission resources from the second resource set.
  • first elimination step and second elimination step may be performed once, or may be performed multiple times.
  • Step 1 Take the execution of the second elimination step in the process of executing the first elimination step (i.e. Step 1) as an example.
  • Execute S1, S2, S3, the second exclusion step, S4, etc.) and the remaining resources in the resource set obtained after executing S1, S2, S3, etc.) are less than M total *X, then increase the RSRP threshold by a certain value, and then re-execute a new round of exclusion steps, and finally pass
  • M total *X the remaining resources in the finally obtained resource set are greater than or equal to M total *X, then this resource set is determined as the second resource set.
  • Step 1 may be executed multiple times, and after obtaining the resource set with remaining resources greater than or equal to M total *X Afterwards, the second exclusion step is performed once, and the resource set obtained through the second exclusion step is the second resource set. It should be noted that if the second exclusion step is executed during the execution of the first exclusion step (i.e. Step 1) as an example, then due to the existence of S4, Step 1 may be executed multiple times, and after obtaining the resource set with remaining resources greater than or equal to M total *X Afterwards, the second exclusion step is performed once, and the resource set obtained through the second exclusion step is the second resource set. It should be noted that if the second exclusion step is executed during the execution of the first exclusion step (i.e.
  • Step 1) the number of resources in the second resource set is greater than or equal to M total *X; if the first exclusion is performed After the step (that is, Step1), the second exclusion step is performed, and the number of resources in the second resource set is not necessarily greater than or equal to M total *X, and may also be less than M total *X.
  • the available resources in the resource selection window are excluded.
  • the candidate resources at the front position in the time domain on the current carrier are evaluated to solve the problem of a large number of candidate resources being excluded, avoiding The communication reliability of the terminal device is reduced due to the small number of optional resources.
  • FIG. 12 shows a block diagram of an apparatus for selecting resources in a carrier aggregation scenario provided by an embodiment of the present application.
  • the device has the function of realizing the above method example, and the function may be realized by hardware, or may be realized by executing corresponding software by hardware.
  • the apparatus may be the terminal device described above, or may be set in the terminal device.
  • the apparatus 1200 may include: an evaluation module 1210 .
  • An evaluation module 1210 configured to evaluate target resources in the target resource set according to selected resources or scheduled resources on the second carrier at a second moment;
  • the target resource set includes selected resources on the first carrier indicated at the first moment, and the second moment is located before the first moment.
  • the second moment is the first moment minus the first offset, or the second moment is the first moment minus the first offset and the second offset displacement.
  • the first offset is a preset value specified in a standard, or is configured by the network, or is pre-configured, or depends on the implementation of the terminal device.
  • the second offset is a random offset.
  • the second offset is greater than 0, and/or, the second offset is less than or equal to T max , where T max is a preset value specified by a standard, or configured by the network, or preset configuration, or depending on the implementation of the end device.
  • the target resource set includes one of the following:
  • the evaluation module 1210 is configured to:
  • Executing the first exclusion step determining the resource selection window and the resource listening window corresponding to the first carrier at the second moment; based on the listening results and/or unlistened time slots in the resource listening window, Excluding available resources within the resource selection window;
  • Executing the second exclusion step during the execution of the first exclusion step or after the execution of the first exclusion step, according to the selected resources or scheduled resources on the second carrier, for the first resource set
  • the resources are excluded; wherein, the first set of resources refers to the set of resources obtained during the process of executing the first exclusion step or after the execution of the first exclusion step, after the first exclusion step and the set of resources
  • the resource set obtained in the second exclusion step is the second resource set;
  • the target resource in the target resource set if the target resource is not in the second resource set, reselect the target resource in the second resource set.
  • the evaluation module 1210 is configured to:
  • the target resources in the target resource set if it is determined at the second moment based on the selected resources or the scheduled resources on the second carrier that the use of the target resources is not supported on the first carrier transmission, reselect the target resource.
  • the evaluation module 1210 is configured to:
  • Executing a first exclusion step determining a resource selection window and a resource listening window corresponding to the first carrier; Exclude available resources within;
  • Executing the second exclusion step during the execution of the first exclusion step or after the execution of the first exclusion step, according to the selected resources or scheduled resources on the second carrier, for the first resource set
  • the resources are excluded; wherein, the first set of resources refers to the set of resources obtained during the process of executing the first exclusion step or after the execution of the first exclusion step, after the first exclusion step and the set of resources
  • the resource set obtained in the second exclusion step is the second resource set;
  • the first resource set includes one of the following:
  • the resources targeted by the second exclusion step include one of the following:
  • FIG. 13 shows a block diagram of an apparatus for selecting resources in a carrier aggregation scenario provided by another embodiment of the present application.
  • the device has the function of realizing the above method example, and the function may be realized by hardware, or may be realized by executing corresponding software by hardware.
  • the apparatus may be the terminal device described above, or may be set in the terminal device.
  • the apparatus 1300 may include: an exclusion module 1310 and a selection module 1320 .
  • the exclusion module 1310 is configured to perform a first exclusion step: determine a resource selection window and a resource listening window corresponding to the first carrier; Exclude the available resources in the above resource selection window;
  • the excluding module 1310 is further configured to perform a second excluding step: during or after performing the first excluding step, according to the selected resource or the scheduled resource on the second carrier , excluding resources in the first resource set; wherein, the first resource set refers to a resource set obtained during or after performing the first excluding step, after the The resource set obtained by the first excluding step and the second excluding step is a second resource set;
  • a selection module 1320 configured to select transmission resources from the second resource set.
  • the first resource set includes one of the following:
  • the resources targeted by the second exclusion step include one of the following:
  • the fourth moment is the trigger moment plus a fourth offset, wherein the trigger moment includes one of the following : The moment when resource selection is triggered, the moment when resource reselection is triggered, and the moment when the higher layer triggers the physical layer to report the set of candidate resources.
  • the device provided by the above embodiment realizes its functions, it only uses the division of the above-mentioned functional modules as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • FIG. 14 shows a schematic structural diagram of a terminal device 140 provided by an embodiment of the present application.
  • the terminal device may be used to perform the resource selection method in the above-mentioned carrier aggregation scenario.
  • the terminal device 140 may include: a processor 141 , a receiver 142 , a transmitter 143 , a memory 144 and a bus 145 .
  • the processor 141 includes one or more processing cores, and the processor 141 executes various functional applications and information processing by running software programs and modules.
  • the receiver 142 and the transmitter 143 can be realized as a transceiver 146, and the transceiver 146 can be a communication chip.
  • the memory 144 is connected to the processor 141 through the bus 145 .
  • the memory 144 may be used to store a computer program, and the processor 141 is used to execute the computer program, so as to implement various steps performed by the terminal device in the foregoing method embodiments.
  • memory 144 can be realized by any type of volatile or nonvolatile storage device or their combination, and volatile or nonvolatile storage device includes but not limited to: RAM (Random-Access Memory, random access memory) And ROM (Read-Only Memory, read-only memory), EPROM (Erasable Programmable Read-Only Memory, erasable programmable read-only memory), EEPROM (Electrically Erasable Programmable Read-Only Memory, electrically erasable programmable read-only memory memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory, CD-ROM), DVD (Digital Video Disc, high-density digital video disc) or other optical storage, tape cartridges, tapes, disks storage or other magnetic storage devices.
  • RAM Random-Access Memory, random access memory
  • ROM Read-Only Memory, read-only memory
  • EPROM Erasable Programmable Read-Only Memory, erasable programmable read-only memory
  • EEPROM Electrically Eras
  • the processor 141 is configured to, at a second moment, evaluate target resources in the target resource set according to selected resources or scheduled resources on the second carrier;
  • the target resource set includes selected resources on the first carrier indicated at the first moment, and the second moment is located before the first moment.
  • the processor 141 is configured to perform the first exclusion step: determine a resource selection window and a resource listening window corresponding to the first carrier; based on the listening result in the resource listening window and/or non-listening time slots, excluding available resources in the resource selection window;
  • the processor 141 is further configured to perform a second excluding step: during or after performing the first excluding step, according to the selected resource or the scheduled resource on the second carrier , excluding resources in the first resource set; wherein, the first resource set refers to a resource set obtained during or after performing the first excluding step, after the The resource set obtained by the first excluding step and the second excluding step is a second resource set;
  • the processor 141 is further configured to select a transmission resource from the second resource set.
  • An embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is used to be executed by a processor of a terminal device, so as to implement the resource selection method in the above-mentioned carrier aggregation scenario .
  • the computer-readable storage medium may include: ROM (Read-Only Memory, read-only memory), RAM (Random-Access Memory, random access memory), SSD (Solid State Drives, solid state drive) or an optical disc, etc.
  • the random access memory may include ReRAM (Resistance Random Access Memory, resistive random access memory) and DRAM (Dynamic Random Access Memory, dynamic random access memory).
  • the embodiment of the present application also provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip runs on a terminal device, it is used to implement the resource selection method in the above carrier aggregation scenario.
  • the embodiment of the present application also provides a computer program product or computer program, the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processor of the terminal device reads from the computer The readable storage medium reads and executes the computer instructions, so as to implement the resource selection method in the above carrier aggregation scenario.
  • the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
  • the "plurality” mentioned herein means two or more.
  • “And/or” describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently.
  • the character “/” generally indicates that the contextual objects are an "or” relationship.
  • the numbering of the steps described herein only exemplarily shows a possible sequence of execution among the steps.
  • the above-mentioned steps may not be executed according to the order of the numbers, such as two different numbers
  • the steps are executed at the same time, or two steps with different numbers are executed in the reverse order as shown in the illustration, which is not limited in this embodiment of the present application.
  • the functions described in the embodiments of the present application may be implemented by hardware, software, firmware or any combination thereof.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage media may be any available media that can be accessed by a general purpose or special purpose computer.

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Abstract

本申请公开了一种载波聚合场景下的资源选择方法、装置、设备及存储介质，涉及通信技术领域。所述方法包括：在第二时刻根据第二载波上的已选资源或已调度资源，对目标资源集合中的目标资源进行评估；其中，目标资源集合包括在第一时刻指示的第一载波上的已选资源，第二时刻位于第一时刻之前。本申请提出至少在传输当前载波的已选资源之前，根据其他载波上最新的已选资源或已调度资源情况，对当前载波上的已选资源进行评估，如果无法在当前已选资源上进行发送，则触发资源重选。通过这种方式，能够解决终端设备在初始选择资源时排除资源不准确的问题，提高了载波聚合场景下选择资源的准确性。

Description

载波聚合场景下的资源选择方法、装置、设备及存储介质 技术领域
本申请实施例涉及通信技术领域，特别涉及一种载波聚合场景下的资源选择方法、装置、设备及存储介质。
背景技术
在SL(Sidelink，侧行链路)通信中，终端设备可以通过侦听方式在资源池中选择传输资源。在支持SL的CA(Carrier Aggregation，载波聚合)场景下，终端设备如何进行资源选择还需进一步研究。
发明内容
本申请实施例提供了一种载波聚合场景下的资源选择方法、装置、设备及存储介质。所述技术方案如下：
根据本申请实施例的一个方面，提供了一种载波聚合场景下的资源选择方法，所述方法由终端设备执行，所述方法包括：
在第二时刻根据第二载波上的已选资源或已调度资源，对目标资源集合中的目标资源进行评估；
其中，所述目标资源集合包括在第一时刻指示的第一载波上的已选资源，所述第二时刻位于所述第一时刻之前。
根据本申请实施例的一个方面，提供了一种载波聚合场景下的资源选择方法，所述方法由终端设备执行，所述方法包括：
第一排除步骤：确定第一载波对应的资源选择窗和资源侦听窗；基于所述资源侦听窗中的侦听结果和/或未侦听时隙，对所述资源选择窗内的可用资源进行排除；
第二排除步骤：在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后，根据第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，所述第一资源集合是指在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后得到的资源集合，经过所述第一排除步骤和所述第二排除步骤得到的资源集合为第二资源集合；
从所述第二资源集合中选择传输资源。
根据本申请实施例的一个方面，提供了一种载波聚合场景下的资源选择装置，所述装置包括：
评估模块，用于在第二时刻根据第二载波上的已选资源或已调度资源，对目标资源集合中的目标资源进行评估；
其中，所述目标资源集合包括在第一时刻指示的第一载波上的已选资源，所述第二时刻位于所述第一时刻之前。
根据本申请实施例的一个方面，提供了一种载波聚合场景下的资源选择装置，所述装置包括：
排除模块，用于执行第一排除步骤：确定第一载波对应的资源选择窗和资源侦听窗；基于所述资源侦听窗中的侦听结果和/或未侦听时隙，对所述资源选择窗内的可用资源进行排除；
所述排除模块，还用于执行第二排除步骤：在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后，根据第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，所述第一资源集合是指在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后得到的资源集合，经过所述第一排除步骤和所述第二排除步骤得到的资源集合为第二资源集合；
选择模块，用于从所述第二资源集合中选择传输资源。
根据本申请实施例的一个方面，提供了一种终端设备，所述终端设备包括处理器；
所述处理器，用于在第二时刻根据第二载波上的已选资源或已调度资源，对目标资源集合中的目标资源进行评估；
其中，所述目标资源集合包括在第一时刻指示的第一载波上的已选资源，所述第二时刻位于所述第一时刻之前。
根据本申请实施例的一个方面，提供了一种终端设备，所述终端设备包括处理器；
所述处理器，用于执行第一排除步骤：确定第一载波对应的资源选择窗和资源侦听窗；基于所述资源侦听窗中的侦听结果和/或未侦听时隙，对所述资源选择窗内的可用资源进行排除；
所述处理器，还用于执行第二排除步骤：在执行所述第一排除步骤的过程中或者在执行所述第一排除 步骤之后，根据第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，所述第一资源集合是指在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后得到的资源集合，经过所述第一排除步骤和所述第二排除步骤得到的资源集合为第二资源集合；
所述处理器，还用于从所述第二资源集合中选择传输资源。
根据本申请实施例的一个方面，提供了一种计算机可读存储介质，所述存储介质中存储有计算机程序，所述计算机程序用于被处理器执行，以实现上述载波聚合场景下的资源选择方法。
根据本申请实施例的一个方面，提供了一种芯片，所述芯片包括可编程逻辑电路和/或程序指令，当所述芯片运行时，用于实现上述载波聚合场景下的资源选择方法。
根据本申请实施例的一个方面，提供了一种计算机程序产品或计算机程序，所述计算机程序产品或计算机程序包括计算机指令，所述计算机指令存储在计算机可读存储介质中，处理器从所述计算机可读存储介质读取并执行所述计算机指令，以实现上述载波聚合场景下的资源选择方法。
本申请实施例提供的技术方案可以包括如下有益效果：
本申请提出至少在传输当前载波的已选资源之前，根据其他载波上最新的已选资源或已调度资源情况，对当前载波上的已选资源进行评估，如果无法在当前已选资源上进行发送，则触发资源重选。通过这种方式，能够解决终端设备在初始选择资源时排除资源不准确的问题，提高了载波聚合场景下选择资源的准确性。
附图说明
图1是本申请一个实施例提供的网络架构的示意图；
图2是本申请一个实施例提供的SL通信的物理层结构的示意图；
图3是本申请一个实施例提供的时频资源位置预留的示意图；
图4是本申请一个实施例提供的资源侦听和资源选择的示意图；
图5是本申请一个实施例提供的资源重评估的示意图；
图6是本申请一个实施例提供的CA场景下的资源选择的示意图；
图7是本申请另一个实施例提供的CA场景下的资源选择的示意图；
图8是本申请一个实施例提供的载波聚合场景下的资源选择方法的流程图；
图9是图8实施例涉及的资源选择方案的示意图；
图10是本申请另一个实施例提供的载波聚合场景下的资源选择方法的流程图；
图11是图10实施例涉及的资源选择方案的示意图；
图12是本申请一个实施例提供的载波聚合场景下的资源选择装置的框图；
图13是本申请另一个实施例提供的载波聚合场景下的资源选择装置的框图；
图14是本申请一个实施例提供的终端设备的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
本申请实施例描述的网络架构以及业务场景是为了更加清楚地说明本申请实施例的技术方案，并不构成对本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
请参考图1，其示出了本申请一个实施例提供的网络架构的示意图。该网络架构可以包括：核心网11、接入网12和终端设备13。
核心网11中包括若干核心网设备。核心网设备的功能主要是提供用户连接、对用户的管理以及对业务完成承载，作为承载网络提供到外部网络的接口。例如，5G(5th Generation，第五代移动通信技术)NR(New Radio，新空口)系统的核心网中可以包括AMF(Access and Mobility Management Function，接入和移动性管理功能)实体、UPF(User Plane Function，用户平面功能)实体和SMF(Session Management Function，会话管理功能)实体等设备。
接入网12中包括若干接入网设备14。5G NR系统中的接入网可以称为NG-RAN(New Generation-Radio Access Network，新一代无线接入网)。接入网设备14是一种部署在接入网12中用以为终端设备13提供无线通信功能的装置。接入网设备14可以包括各种形式的宏基站，微基站，中继站，接入点等等。在采用不同的无线接入技术的系统中，具备接入网设备功能的设备的名称可能会有所不同，例如在5G NR系统中，称为gNodeB或者gNB。随着通信技术的演进，“接入网设备”这一名称可能会变化。为方便描述，本公开实施例中，上述为终端设备13提供无线通信功能的装置统称为接入网设备。
终端设备13的数量通常为多个，每一个接入网设备14所管理的小区内可以分布一个或多个终端设备13。终端设备13可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其他处理设备，以及各种形式的用户设备、移动台(Mobile Station，MS)等等。为方便描述，上面提到的设备统称为终端设备。接入网设备14与核心网设备之间通过某种空中技术相互通信，例如5G NR系统中的NG接口。接入网设备14与终端设备13之间通过某种空中技术互相通信，例如Uu接口。
终端设备13和终端设备13(例如车载设备与其它设备(如其它车载设备、手机、RSU(Road Side Unit，路测单元)等))之间可以通过直连通信接口(如PC5接口)互相通信，相应地，该基于直连通信接口建立的通信链路可以称为直连链路或SL。SL传输即为终端设备与终端设备之间通过侧行链路直接进行通信数据传输，不同于传统的蜂窝系统中通信数据通过接入网设备接收或者发送，SL传输具有时延短、开销小等特点，适合用于地理位置接近的两个终端设备(如车载设备和地理位置接近的其它周边设备)之间的通信。需要说明的是，在图1中，仅以V2X(vehicle to everything，车联网)场景下的车对车通信为示例，SL技术可以应用于各种终端设备之间直接进行通信的场景。或者说，本申请中的终端设备是指任意一种利用SL技术通信的设备。
本公开实施例中的“5G NR系统”也可以称为5G系统或者NR系统，但本领域技术人员可以理解其含义。本公开实施例描述的技术方案可以适用于5G NR系统，也可以适用于5G NR系统后续的演进系统。
关于SL传输，3GPP定义了两种传输模式：模式A和模式B。
模式A：终端设备的传输资源是由接入网设备(如基站)分配的，终端设备根据接入网设备分配的传输资源在侧行链路上进行通信数据的传输，其中，接入网设备既可以为终端设备分配单次传输的传输资源，也可以为终端设备分配半静态传输的传输资源。
模式B：终端设备自行在资源池中选取传输资源进行通信数据的传输。具体地，终端设备可以通过侦听的方式在资源池中选取传输资源，或者通过随机选取的方式在资源池中选取传输资源。
接下来主要介绍NR V2X系统中SL通信，终端设备自主进行资源选择的方法(也即上述模式B)。
NR V2X系统中SL通信的物理层结构如图2所示。PSCCH(Physical Sidelink Control Channel，物理侧行控制信道)用于承载第一侧行控制信息，PSSCH(Physical Sidelink Shared Channel，物理侧行共享信道)用于承载数据和第二侧行控制信息。PSCCH和PSSCH在同一时隙中发送。上述第一侧行控制信息和第二侧行控制信息可以是两个具有不同作用的侧行控制信息。例如，第一侧行控制信息承载在PSCCH中，主要包含资源侦听相关的域，方便其他终端设备解码后进行资源排除与资源选择。在PSSCH中，除了数据外，还承载第二侧行控制信息，第二侧行控制信息主要包括数据解调相关的域，方便其他终端设备解调该PSSCH中的数据。
在NR V2X系统中，上述模式B下，终端设备自行选择传输资源来发送数据。资源预留则是资源选择的前提。
资源预留是指终端设备在PSCCH中发送第一侧行控制信息预留接下来要使用的资源。在NR V2X系统中，支持TB(Transport Block，传输块)内的资源预留也支持TB间的资源预留。
如图3所示，终端设备发送第一侧行控制信息，利用其中“Time resource assignment(时间资源分配)”和“Frequency resource assignment(频率资源分配)”域指示当前TB的N个时频资源(包括当前发送所用的资源)。其中N≤Nmax，在NR V2X中，Nmax等于2或3。同时，上述N个被指示的时频资源应分布在W个时隙内。在NR V2X中，W等于32。例如，图3所示的TB1中，终端设备在PSSCH发送初传数据的同时在PSCCH中发送第一侧行控制信息，利用上述两个域指示初传和重传1的时频资源位置(即此时N＝2)，即预留重传1的时频资源。并且，初传和重传1在时域上分布在32个时隙内。同理，在图3所示的TB1中，终端设备利用重传1的PSCCH中发送的第一侧行控制信息指示重传1和重传2的时频资源位置，重传1与重传2在时域上分布在32个时隙内。
同时，终端设备发送第一侧行控制信息时利用“Resource reservation period(资源预留周期)”域进行TB间的资源预留。例如图3中，终端设备在发送TB1的初传的第一侧行控制信息时，利用“Time resource assignment”和“Frequency resource assignment”域指示TB1初传和重传1的时频资源位置，记为{(t 1,f 1),(t 2,f 2)}。其中t 1、t 2代表TB1初传和重传1资源的时域位置，f 1、f 2代表相应的频域位置。如果该第一侧行控制信息中，“Resource reservation period”域的取值为100毫秒，则该SCI(Sidelink Control Information，侧行链路控制信息)同时指示了时频资源{(t 1+100,f 1),(t 2+100,f 2)}，这两个资源用于TB2初传和重传1的传输。同理，在TB1重传1中发送的第一侧行控制信息，也利用“Resource reservation period”域预留了TB2重传1和重传2的时频资源。在NR V2X中，“Resource reservation period”域可能的取值为0、1-99、100、200、300、400、500、600、700、800、900、1000毫秒，相比较LTE(Long Term Evaluation，长期演进)V2X更为灵活。但在每个资源池中，只配置了其中的e种取值，终端设备根据所用的资源池确定可能使用的值。 记资源池配置中的e种取值为资源预留周期集合M，示例性地，e小于等于16。
此外，通过网络配置或预配置，上述TB间的预留可以以资源池为单位激活或去激活。当激活TB间的预留时，第一侧行控制信息中包括“Resource reservation period”域。当去激活TB间的预留时，第一侧行控制信息中不包括“Resource reservation period”域。在激活TB间的预留时，一般情况下，在触发资源重选之前，终端设备所用的“Resource reservation period”域的取值，即资源预留周期都不会变，终端设备每发送一次第一侧行控制信息，都利用其中的“Resource reservation period”域预留下个周期的资源，用于另一个TB的传输，从而达到周期性地半持续传输。
当终端设备工作在上述模式B下，终端设备可以通过侦听其他终端设备发送的PSCCH，获取其他终端设备发送的第一侧行控制信息，从而得知其他终端设备所预留的资源。终端设备在进行资源选择时，会排除其他终端设备预留的资源，从而避免资源碰撞。
在NR V2X系统中，上述模式B下，终端设备需要自行选择资源。
如图4所示，终端设备在时隙n触发资源选择或重选或时隙n是高层触发物理层上报候选资源集合的时隙，资源选择窗从n+T 1开始，到n+T 2结束。0<＝T 1<＝T proc,1，当子载波间隔是15，30，60，120kHz时，T proc,1为3，5，9，17个时隙。T 2min<＝T 2<＝业务的剩余时延预算，T 2min的取值集合为{1,5,10,20}*2 μ个时隙，其中μ＝0,1,2,3对应于子载波间隔是15，30，60，120kHz的情况，终端设备根据自身待发送数据的优先级从该取值集合中确定T 2min。例如当子载波间隔是15kHz时，终端设备根据自身待发送数据的优先级从集合{1,5,10,20}中确定T 2min。当T 2min大于等于业务的剩余时延预算时，T 2等于业务的剩余时延预算。剩余时延预算即数据的时延要求的对应时刻与当前时刻的差值。例如时隙n到达的数据包，时延要求为50毫秒，假设一个时隙为1毫秒，如果当前时刻为时隙n，则剩余时延预算为50毫秒，若当前时刻为时隙n+20，则剩余时延预算为30毫秒。
终端设备在n-T 0到n-T proc,0进行资源侦听(不包括n-T proc,0)，T 0的取值为100或1100毫秒。当子载波间隔是15，30，60，120kHz时，T proc,0为1，1，2，4个时隙。实际上，终端设备在每个时隙(除了自己的发送时隙)都会侦听其他终端设备发送的第一侧行控制信息，当时隙n触发资源选择或重选后，终端设备使用n-T 0到n-T proc,0资源侦听的结果。
Step 1：终端设备将资源选择窗内所有属于终端设备所用资源池的可用资源作为资源集合A，集合A中的任意一个资源记为R(x,y)，x和y分别指示资源的频域位置和时域位置。记集合A中资源的初始数量为M total。终端设备根据资源侦听窗内的未侦听时隙(Step 1-1)和/或资源侦听窗内的资源侦听结果(Step 1-2)对资源集合A中的资源进行排除。终端设备判断资源R(x,y)或与资源R(x,y)对应的一系列周期性资源是否与Step 1-1中根据未侦听时隙确定的时隙或Step 1-2中根据侦听到的第一侧行控制信息确定的资源重叠，若重叠则从资源集合A中排除资源R(x,y)。
Step 1-1：如果终端设备在侦听窗内时隙m发送数据，没有进行侦听，则终端设备将根据时隙m和终端设备所用资源池中每一种允许的资源预留周期，以该资源预留周期为间隔，确定对应的Q个时隙。若该Q个时隙与资源R(x,y)或与资源R(x,y)对应的一系列周期性资源重叠，则从资源集合A中排除资源R(x,y)。上述Q＝1或者
Figure PCTCN2021093921-appb-000001
(代表向上取整)。T scal等于T 2转化为毫秒后的值。P rx为终端设备所用资源池允许的资源预留周期的一种。
例如图4中的子图(a)，终端设备在时隙m没有进行侦听，依次根据所用资源池配置中的资源预留周期集合M中每一种资源预留周期进行资源排除，对于其中某个资源预留周期1，假定Q值计算为2，则对应的Q个时隙为图4子图(a)中从时隙m映射的以资源预留周期1为间隔接下来的2个以横线阴影标识的时隙。对于其中某个资源预留周期2，假定Q值计算Q＝1，则对应的Q个时隙为图4子图(a)中从时隙m映射的以资源预留周期2为间隔的接下来的1个点状阴影标识的时隙。
终端设备将判断每一种预留周期对应的Q个时隙，是否与资源R(x,y)或与资源R(x,y)对应的一系列周期性资源重叠，若重叠则从资源集合A中排除资源R(x,y)。
可选地，当终端设备所用资源池去激活TB间的预留时，终端设备可以不执行上述Step 1-1。
Step 1-2：如果终端设备在资源侦听窗的时隙m内侦听到PSCCH中传输的第一侧行控制信息，测量该PSCCH的SL-RSRP(Sidelink Reference Signal Received Power，侧行参考信号接收功率)或者该PSCCH调度的PSSCH的SL-RSRP(即与该PSCCH在同一时隙中发送的PSSCH的SL-RSRP)。
如果测量的SL-RSRP大于SL-RSRP阈值，且终端设备所用资源池激活TB间的资源预留，则终端设备将根据时隙m和侦听到的第一侧行控制信息中携带的资源预留周期，以该资源预留周期为间隔，确定对应的Q个时隙。终端设备假定在该Q个时隙中也收到了相同内容的第一侧行控制信息。终端设备将判断在时隙m收到的第一侧行控制信息和这些假定收到的Q个第一侧行控制信息的“Time resource assignment”和“Frequency resource assignment”域指示的资源与资源R(x,y)或与资源R(x,y)对应的一系列周期性资源是否重叠，若重叠则从集合A中排除对应资源R(x,y)。上述Q＝1或者
Figure PCTCN2021093921-appb-000002
(代表向上取整)。T scal 等于T 2转化为毫秒后的值。P rx为侦听到的第一侧行控制信息中携带的资源预留周期。
例如图4中的子图(b)，当终端设备所用资源池激活TB间的预留，如果终端设备在时隙m资源E(v,m)上侦听到PSCCH中的第一侧行控制信息，该第一侧行控制信息中的资源预留周期为P rx，假定Q值计算为1，终端设备将假定在时隙m+P rx上也收到了相同内容的第一侧行控制信息。终端设备将判断在时隙m收到的第一侧行控制信息和假定在时隙m+P rx收到的第一侧行控制信息的“Time resource assignment”和“Frequency resource assignment”域指示的资源1、2、3、4、5、6与资源R(x,y)或与资源R(x,y)对应的一系列周期性资源是否重叠，若重叠且满足RSRP条件则从资源集合A中排除资源R(x,y)。
如果终端设备测量的SL-RSRP大于SL-RSRP阈值，且终端设备所用资源池去激活TB间的资源预留，则终端设备只判断在时隙m收到的第一侧行控制信息的“Time resource assignment”与“Frequency resource assignment”域指示的资源是否与资源R(x,y)或与资源R(x,y)对应的一系列资源重叠，若重叠则从资源集合A中排除资源R(x,y)。
例如图4中的子图(b)，当终端设备所用资源池去激活TB间的预留，如果终端设备在时隙m资源E(v,m)上侦听到PSCCH中的第一侧行控制信息，则终端设备判断该第一侧行控制信息中“Time resource assignment”和“Frequency resource assignment”域指示的资源1、2、3与资源R(x,y)或与资源R(x,y)对应的一系列周期性资源是否重叠，若重叠且满足RSRP条件则从资源集合A中排除资源R(x,y)。
如果在上述资源排除后资源集合A中剩余资源不足M total*X，则将SL-RSRP阈值抬升3dB，重新执行Step 1。物理层将资源排除后的资源集合A作为候选资源集合上报给高层。
Step 2：高层从上报的候选资源集合中随机选择资源发送数据。即终端设备从候选资源集合中随机选择资源发送数据。
需要注意的是：
1.上述RSRP阈值是由终端设备侦听到的PSCCH中携带的优先级P1和终端设备待发送数据的优先级P2决定的。终端设备所用资源池的配置中包含一张SL-RSRP阈值表，该SL-RSRP阈值表包含了所有优先级组合对应的SL-RSRP阈值。资源池的配置可以是网络配置或者预配置的。
例如，如表1所示，假设P1与P2的优先级等级可选值均为0-7，则不同优先级组合对应的SL-RSRP阈值用γ ij表示，其中，γ ij中的i为优先级等级P1的取值，j为优先级等级P2的取值。
表1 SL-RSRP阈值表
Figure PCTCN2021093921-appb-000003
当终端设备侦听到其他终端设备发送的PSCCH，获取该PSCCH中传输的第一侧行控制信息中携带的优先级P1以及待发送数据的优先级P2，终端设备通过查表1的方式确定SL-RSRP阈值。
2.终端设备利用测量到的PSCCH-RSRP还是该PSCCH调度的PSSCH-RSRP与SL-RSRP阈值进行比较，取决于终端设备所用资源池的资源池配置。资源池的配置可以是网络配置或者预配置的。
3.上述X，X可能的取值为{20％,35％,50％}。终端设备所用资源池的配置中包含优先级与上述可能取值的对应关系，终端设备根据待发送数据的优先级及该对应关系，确定X的值。资源池配置可以是由网络配置或者预配置。
此外，在NR-V2X中还支持在完成资源选择之后，对于已选但未通过发送第一侧行控制信息指示的资源进行re-evaluation(重评估)。
如图5所示，资源x、y、z、u、v是终端设备在时隙n已经选择的时频资源，资源y位于时隙m。对于终端设备即将在资源y发送第一侧行控制信息进行首次指示的资源z和u(资源y之前已经被资源x中的第一侧行控制信息指示)，终端设备至少在时隙m-T 3执行一次上述Step 1，即至少在时隙m-T 3按上述确定资源选择窗与资源侦听窗，并执行上述Step 1对资源选择窗内的资源进行排除，得到候选资源集合。如果资源z或u不在候选资源集合中，则终端设备执行上述Step 2重选资源z和u中不在候选资源集合中的时频资源，取决于终端设备实现，终端设备也可以重选任何已经选择但未通过发送第一侧行控制信息指示的资源，例如资源z、u和v中的任意一个或多个资源。上述T 3等于T proc,1。图5中虚线箭头表示即将发送 第一侧行控制信息指示，实线箭头表示已经发送第一侧行控制信息指示。
上述介绍为NR-V2X中的一种SL通信方式，即终端设备通过资源侦听自主选取传输资源，自行在侧行链路上进行数据传输。该SL通信的方式也可应用在手持终端与手持终端间的直接通信，行人与车辆间的直接通信等各种SL通信中。
在LTE-V2X中支持侧行链路Sidelink的载波聚合(Carrier Aggregation，简称CA)，终端设备可以在一个或多个载波上并行地传输数据，进而提升侧行传输系统的吞吐量。
在LTE-V2X中CA场景下，上述模式B下，终端设备同样要根据资源侦听和/或未侦听子帧进行资源排除，获取候选资源集合，进而从候选资源集合中选择资源发送数据。受限于一些条件，当获取候选资源集合后，向高层上报前，需要从候选资源集合中进一步排除终端设备无法进行传输的候选资源。
例如图6中，终端设备在子帧n触发资源选择或重选，在载波1上选择资源。终端设备确定资源选择窗和资源侦听窗，进行资源排除，获取候选资源集合，候选资源集合包括资源R、资源V和资源U。受限于以下条件，终端设备进一步从候选资源集合中排除无法用于传输的候选资源。
条件1：终端设备支持的同时进行发送的载波数目
例如终端设备只支持同时在两个载波上进行传输，且终端设备已经在载波2和载波3上分别选择了资源E和P，且资源E和P与资源R在时域上重叠，因此终端设备需从候选资源集合中排除资源R。原因在于：如果选择资源R，终端设备需同时在三个载波上传输，超出了终端设备的能力。
条件2：载波聚合或结合的限制
例如终端设备不支持在载波1和载波2上进行聚合或结合，即在载波2传输时不能在载波1上传输，如果终端设备在载波2上选择了资源E，且资源E与资源R在时域上重叠，则终端设备需从候选资源集合中排除资源R。
条件3：由于射频重新调整导致的中断
例如终端设备不支持在载波1和载波2上进行聚合或结合，即在载波2传输时不能在载波1上传输，当在载波2上传输完成后如果需要在载波1上传输，应重新调整设备硬件或射频，再在载波1上传输。在重新调整的时间内，终端设备无法进行传输。例如终端设备在载波2的资源E上传输后，需要在子帧t i到t j间进行射频调整，资源V与子帧t i到t j在时域上重叠，则终端设备需从候选资源集合中排除资源V。
又例如终端设备支持两套射频，或者称为两个射频链(RF Chain)。射频链1用于载波1和载波2上的传输，射频链2用于载波3上的传输。因此，终端设备需要调整射频链1从而支持两个载波的传输，同理，终端设备在载波2的资源E上传输后进行射频重新调整的时间如果与资源V在时域上重叠，则终端设备从候选资源集合中排除资源V。
上文介绍了LTE-V2X中CA场景下的资源选择方案，目前标准暂未对NR-V2X中CA场景下的资源选择方案进行讨论。
其次，根据上述描述可以得知，如果重用LTE-V2X中的方法，根据其他载波上的已选资源对当前载波上的候选资源集合进行排除，排除终端设备无法进行传输的资源，会存在如下问题。
问题1：在NR-V2X中一个TB最多传输32次，且支持HARQ(Hybrid Automatic Repeat reQuest，混合自动重传请求)重传。当接收端针对该TB反馈ACK(Acknowledgement，肯定确认)表示接收成功后，发送端可以释放未使用的已选资源。在图7中，终端设备在时隙n触发了资源选择，在载波1上选择资源，确定候选资源集合。在载波2上，终端设备针对一个TB已经选择了大量资源。如果根据载波2上的已选资源排除候选资源集合中的无法进行发送的资源，将会导致大量候选资源被排除。并且在时隙n后，如果终端设备在载波2上收到了ACK，释放了未使用的已选资源，这等同于终端设备在载波1上时隙n进行资源选择时放弃了许多本可以使用的候选资源。
问题2：在NR-V2X中，终端设备在完成资源选择后还支持通过re-evaluation(重评估)等机制对已选资源进行重选。同样例如在图7中，终端设备在时隙n触发了资源选择，在载波1上选择资源，确定候选资源集合，候选资源集合包括资源R、V和U。终端设备根据在载波2上的已选资源P排除了候选资源U。但如果终端设备在时隙n后对资源P进行了重选，这同样等同于终端设备在时隙n选择资源时排除了本可以使用的候选资源U。
针对上述终端设备在初始选择资源时排除资源不准确的问题，本申请借鉴NR-V2X中的re-evaluation(重评估)机制的思想，提出至少在传输当前载波的已选资源之前(如在指示或传输当前载波的已选资源之前)，根据其他载波上最新的已选资源或已调度资源情况，对当前载波上的已选资源进行评估，如果无法在当前已选资源上进行发送，则触发资源重选。通过这种方式，能够解决终端设备在初始选择资源时排除资源不准确的问题，提高了载波聚合场景下选择资源的准确性。
下面，将通过几个示例性实施例对本申请技术方案进行介绍说明。
请参考图8，其示出了本申请一个实施例提供的载波聚合场景下的资源选择方法的流程图。该方法可应用于图1所示的网络架构中，例如该方法可以由终端设备执行。该方法可以包括如下步骤：
步骤810，在第二时刻根据第二载波上的已选资源或已调度资源，对目标资源集合中的目标资源进行评估；其中，目标资源集合包括在第一时刻指示的第一载波上的已选资源，第二时刻位于第一时刻之前。
可选地，第一时刻是任意一个已选资源所在的时间单元。可选地，该时间单元可以是时隙，也可以是子帧或OFDM(Orthogonal Frequency Division Multiplexing，正交频分复用)符号等，本申请对此不作限定。本申请中的某一时刻，可以是指该时刻所对应的时间点，也可以是指该时刻所在的时间单元，如该时刻所属的时隙或子帧或OFDM符号等。
结合参考图9，第一时刻可以是时隙m，第二时刻位于第一时刻之前，例如第二时刻可以是时隙m-T 3。以第一载波为图9所示的载波1为例，在载波1上，终端设备在时隙n触发资源选择(或资源重选，或高层触发物理层上报候选资源集合)，终端设备选择了资源x、y、z、u和v。对于目标资源集合中的资源(目标资源集合包括在时隙m指示的载波1上的已选资源)，终端设备在时隙m-T 3根据载波2和/或载波3上的已选资源或已调度资源，对目标资源集合中的目标资源进行评估，例如终端设备判断是否对该目标资源进行重选。
可选地，第二时刻为第一时刻减去第一偏移量，或者，第二时刻为第一时刻减去第一偏移量和第二偏移量。以第一时刻为时隙m为例，在一个示例中，第二时刻为时隙m-T 3，T 3为第一偏移量，如T 3是大于0的数值。在另一个示例中，第二时刻为时隙m-T 3-Tr，T 3为第一偏移量，T r为第二偏移量，如T 3是大于0的数值，有关T r的取值说明可参见下文。另外，在图9中，仅示例性示出了第二时刻为时隙m-T 3的情况，对于第二时刻为时隙m-T 3-Tr的情况在图9中并未示出。
可选地，对于上述第一偏移量T 3，该第一偏移量T 3是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现。在一个示例中，第一偏移量T 3是基于子载波间隔从多个候选偏移量中确定的一个偏移量。例如，第一偏移量为T proc,0或T proc,1，该T proc,0和T proc,1可参见上文内容中的介绍说明。
可选地，对于上述第二偏移量T r，该第二偏移量T r为随机偏移量。可选地，第二偏移量T r大于0，和/或，第二偏移量T r小于或等于T max，其中，T max是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现。
可选地，第二载波是不同于第一载波的载波，第二载波可以是一个载波，也可以包括多个载波。例如在图9中，第一载波为载波1，第二载波可以包括载波2和/或载波3。
在示例性实施例中，目标资源集合包括以下之一：
(1)在第一时刻用于传输的第一载波上的已选资源；例如在图9中，第一时刻为时隙m，目标资源集合包括在时隙m用于传输的载波1上的资源y；
(2)在第一时刻指示的第一载波上的已选资源；其中，指示的已选资源是指通过第一侧行控制信息指示的已选资源，例如在图9中，第一时刻为m，目标资源集合包括在资源y上通过发送第一侧行控制信息指示的资源y、z和u；在一个示例中，指示的已选资源是通过第一侧行控制信息中“Time resource assignment”和“Frequency resource assignment”域指示的已选资源，例如在图9中，第一时刻为m，目标资源集合包括在资源y上通过发送第一侧行控制信息，并通过该第一侧行控制信息中“Time resource assignment”和“Frequency resource assignment”域指示的资源y、z和u。
(3)在第一时刻指示，且未在第一时刻之前指示的第一载波上的已选资源；例如在图9中，第一时刻为m，目标资源集合包括在资源y上通过发送第一侧行控制信息指示的，且未被之前发送的第一侧行控制信息指示的资源z和u；在一个示例中，目标资源集合包括在第一时刻通过第一侧行控制信息中“Time resource assignment”和“Frequency resource assignment”域指示，且未在第一时刻之前通过第一侧行控制信息指示的第一载波上的已选资源。
(4)在第一时刻指示，且已在第一时刻之前指示的第一载波上的已选资源；例如在图9中，第一时刻为m，目标资源集合包括在资源y上通过发送第一侧行控制信息指示的，且已被之前发送的第一侧行控制信息指示的资源y；在一个示例中，目标资源集合包括在第一时刻通过第一侧行控制信息中“Time resource assignment”和“Frequency resource assignment”域指示，且已在第一时刻之前通过第一侧行控制信息指示的第一载波上的已选资源。
在一示例性实施例中，上述步骤810包括如下步骤：
第一排除步骤：在第二时刻确定第一载波对应的资源选择窗和资源侦听窗；基于资源侦听窗中的侦听结果和/或未侦听时隙，对资源选择窗内的可用资源进行排除；
第二排除步骤：在执行第一排除步骤的过程中或者在执行第一排除步骤之后，根据第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，第一资源集合是指在执行第一排除步骤的过程中或者在执行第一排除步骤之后得到的资源集合，经过第一排除步骤和第二排除步骤得到的资源集合 为第二资源集合；
对于目标资源集合中的目标资源，若目标资源不在第二资源集合中，则在第二资源集合中重选目标资源。
在本申请实施例中，第一排除步骤可以是上文介绍的Step 1，有关Step 1的详细介绍说明可参见上文，这里仅对Step 1进行概括性说明，用于表明各个步骤间的时序关系：
S1、将资源选择窗内的所有可用资源初始化为资源集合A，记资源集合A中全部可用资源的数量为M total；
S2、根据资源侦听窗内的未侦听时隙对资源集合A进行资源排除(Step 1-1)，可选地，该步骤可根据资源池是否激活TB间预留来决定执行或不执行；
S3、根据资源侦听窗内侦听到的第一侧行控制信息对资源集合A中的资源进行排除(Step 1-2)；
S4、如果资源集合A中剩余资源不足M total*X，则提升RSRP阈值LdB(L为大于0的数值，如L＝3)，重新执行Step 1。
终端设备在执行第一排除步骤的过程中或者在执行第一排除步骤之后，执行第二排除步骤。也即，终端设备在执行Step 1的过程中或者在执行Step 1之后，执行第二排除步骤。例如，第一排除步骤包括上文Step 1中的S1～S4，以在执行Step 1的过程中执行第二排除步骤为例，执行时序可以是S1、第二排除步骤、S2、S3、S4，或者也可以是S1、S2、S3、第二排除步骤、S4，等等，本申请对此不作限定。又例如，以在执行Step 1之后执行第二排除步骤为例，执行时序可以是Step 1(依次包括S1、S2、S3和S4)、第二排除步骤，其中，Step 1可能执行一次，也可能执行多次，第二排除步骤可以仅执行一次。另外，第二排除步骤是针对第一资源集合中的资源进行排除。
可选地，第一资源集合包括以下之一：
(1)资源选择窗内的所有可用资源的集合，例如资源选择窗内属于终端设备所用资源池的所有可用资源的集合；
(2)基于资源侦听窗中的侦听结果对资源选择窗内的可用资源进行排除得到的剩余资源集合；
(3)基于资源侦听窗中的未侦听时隙对资源选择窗内的可用资源进行排除得到的剩余资源集合；
(4)基于资源侦听窗中的侦听结果和未侦听时隙，对资源选择窗内的可用资源进行排除得到的剩余资源集合。
也即，第一资源集合可以是上述初始的资源集合A，或者是执行完Step 1-1后的资源集合A，或者是执行完Step 1-2后的资源集合A，或者是执行完Step 1后的资源集合A。
可选地，第二排除步骤所针对的资源包括以下之一：
(1)第一资源集合中的任意一个资源；
(2)第一资源集合中时域位置前a个资源中的任意一个资源，a为正整数；其中，a可以是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现；
(3)第一资源集合中时域位置前b％个资源中的任意一个资源，b为大于0的数值；其中，b可以是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现；可选地，b％是相对于第一资源集合中包含的资源数量而言的；
(4)第一资源集合中时域位置小于或等于第三时刻的资源中的任意一个资源，该第三时刻为第二时刻加上第三偏移量；结合上文介绍，第二时刻为时隙m-T 3或时隙m-T 3-Tr，那么第三时刻为时隙m-T 3+c或时隙m-T 3-Tr+c，c代表第三偏移量，c可以是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现。可选地，第三时刻大于或等于目标资源集合中时域位置最靠后的资源所对应的时刻，以尽可能地保证在资源排除过程中能够对目标资源集合中的资源进行更加全面地评估，以判断其是否与其他载波上的已选资源或已调度资源发生冲突。
如果终端设备根据第二载波上的已选资源或已调度资源，确定第一资源集合中的某一资源不能用于在第一载波上传输，则终端设备对第一资源集合中的该资源进行排除。示例性地，上述终端设备根据第二载波上的已选资源或已调度资源，确定第一资源集合中的资源不能用于在第一载波上传输的因素包括以下至少一个：
(1)终端设备支持的同时进行发送的载波数目
例如图9中，终端设备只支持同时在两个载波上进行传输，且终端设备已经在载波2和载波3上分别选择了资源o和a，且资源o和a与第一资源集合中的资源在时域上重叠，则终端设备确定不支持在载波1的该资源上进行传输，需从第一资源集合中排除该资源。
(2)载波聚合或结合的限制
例如图9中，终端设备不支持在载波1和载波2上进行聚合或结合，即在载波2传输时不能在载波1上传输，如果终端设备在载波2上选择了资源o，且资源o与第一资源集合中的资源在时域上重叠，则终 端设备判断不支持在载波1的该资源上进行传输，需从第一资源集合中排除该资源。
(3)由于射频重新调整导致的中断
例如图9中，终端设备不支持在载波1和载波2上进行聚合或结合，即在载波2传输时不能在载波1上传输，当在载波2上传输完成后如果需要在载波1上传输，应重新调整设备硬件或射频，再在载波1上传输。在重新调整的时间内，终端设备无法进行传输。终端设备在载波2的资源o上传输后，需要在时隙t i到t j间进行射频调整，若第一资源集合中的资源与时隙t i到t j在时域上重叠，则终端设备判断不支持在载波1的该资源上进行传输，需从第一资源集合中排除该资源。
又例如终端设备支持两套射频，或者称为两个射频链(RF Chain)。射频链1用于载波1和载波2的传输，射频链2用于载波3上的传输。因此，终端设备需要调整射频链1从而支持两个载波的传输，同理，终端设备在载波2的资源o上传输后进行射频重新调整的时间如果与第一资源集合中的资源在时域上重叠，则终端设备判断不支持在载波1的该资源上进行传输，需从第一资源集合中排除该资源。
在本申请实施例中，将经过第一排除步骤和第二排除步骤得到的资源集合称为第二资源集合。对于目标资源集合中的目标资源，若目标资源不在第二资源集合中，则终端设备在第二资源集合中重选该目标资源。
例如，目标资源集合包括图9中的资源y，如果资源y不在经过第一排除步骤和第二排除步骤得到的第二资源集合中，则在第二资源集合中重选资源y。
又例如，目标资源集合包括图9中的资源y、z和u，如果资源z不在经过第一排除步骤和第二排除步骤得到的第二资源集合中，则在第二资源集合中重选资源z。
又例如，目标资源集合包括图9中的资源z和u，如果资源z和u均不在经过第一排除步骤和第二排除步骤得到的第二资源集合中，则在第二资源集合中重选资源z和u。
需要说明的是，上述第一排除步骤和第二排除步骤可能执行一遍，也可能执行多遍。以在执行第一排除步骤(即Step 1)的过程中执行第二排除步骤为例，当经过一轮排除步骤(例如按序执行S1、第二排除步骤、S2、S3、S4，或者按序执行S1、S2、S3、第二排除步骤、S4，等等)后得到的资源集合中剩余资源不足M total*X，则提升RSRP阈值一定数值，然后重新执行新一轮的排除步骤，最终经过若干轮排除步骤之后，最终得到的资源集合中剩余资源大于或等于M total*X，则将该资源集合确定为第二资源集合。或者，以执行第一排除步骤(即Step 1)之后执行第二排除步骤为例，那么由于S4的存在，Step 1可能会执行多遍，在得到剩余资源大于或等于M total*X的资源集合之后，执行一次第二排除步骤，经过第二排除步骤得到的资源集合即为第二资源集合。需要说明的是，如果在执行第一排除步骤(即Step 1)的过程中执行第二排除步骤，第二资源集合中的资源数量是大于或等于M total*X的；如果在执行第一排除步骤(即Step1)之后执行第二排除步骤，第二资源集合中的资源数量不一定大于或等于M total*X，也可能小于M total*X。
在另一示例性实施例中，上述步骤810包括如下步骤：对于目标资源集合中的目标资源，若在第二时刻根据第二载波上的已选资源或已调度资源，确定在第一载波上不支持使用目标资源进行传输，则对目标资源进行重选。
示例性地，上述终端设备根据第二载波上的已选资源或已调度资源，确定在第一载波上不支持使用目标资源进行传输的因素包括以下至少一个：
(1)终端设备支持的同时进行发送的载波数目
例如图9中，终端设备只支持同时在两个载波上进行传输，且终端设备已经在载波2和载波3上分别选择了资源o和a，且资源o和a与目标资源集合中的目标资源在时域上重叠，则终端设备确定不支持在载波1的该目标资源上进行传输，则针对目标资源集合中的该目标资源进行重选。
(2)载波聚合或结合的限制
例如图9中，终端设备不支持在载波1和载波2上进行聚合或结合，即在载波2传输时不能在载波1上传输，如果终端设备在载波2上选择了资源o，且资源o与目标资源集合中的目标资源在时域上重叠，则终端设备判断不支持在载波1的该目标资源上进行传输，则针对目标资源集合中的该目标资源进行重选。
(3)由于射频重新调整导致的中断
例如图9中，终端设备不支持在载波1和载波2上进行聚合或结合，即在载波2传输时不能在载波1上传输，当在载波2上传输完成后如果需要在载波1上传输，应重新调整设备硬件或射频，再在载波1上传输。在重新调整的时间内，终端设备无法进行传输。终端设备在载波2的资源o上传输后，需要在时隙t i到t j间进行射频调整，若目标资源集合中的目标资源与时隙t i到t j在时域上重叠，则终端设备判断不支持在载波1的该目标资源上进行传输，则针对目标资源集合中的该目标资源进行重选。
又例如终端设备支持两套射频，或者称为两个射频链(RF Chain)。射频链1用于载波1和载波2的传输，射频链2用于载波3上的传输。因此，终端设备需要调整射频链1从而支持两个载波的传输，同理，终端设备在载波2的资源o上传输后进行射频重新调整的时间如果与目标资源集合中的目标资源在时域上 重叠，则终端设备判断不支持在载波1的该目标资源上进行传输，则针对目标资源集合中的该目标资源进行重选。
例如图9中，目标资源集合包括资源y，如果终端设备根据其他载波(包括载波2和/或载波3)上的已选资源或已调度资源，确定不支持在载波1的资源y上进行传输，则终端设备重选资源y。
又例如图9中，目标资源集合包括资源y、z和u，如果终端设备根据其他载波(包括载波2和/或载波3)上的已选资源或已调度资源，确定不支持在载波1的资源z上进行传输，则终端设备重选资源z。
又例如图9中，目标资源集合包括资源y、z和u，如果终端设备根据其他载波(包括载波2和/或载波3)上的已选资源或已调度资源，确定不支持在载波1的资源z和资源u上进行传输，则终端设备重选资源z和资源u。
另外，针对目标资源集合中不支持在第一载波上进行传输的目标资源，终端设备对该目标资源进行重选，包括如下步骤：
第一排除步骤：确定第一载波对应的资源选择窗和资源侦听窗；基于资源侦听窗中的侦听结果和/或未侦听时隙，对资源选择窗内的可用资源进行排除；
第二排除步骤：在执行第一排除步骤的过程中或者在执行第一排除步骤之后，根据第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，第一资源集合是指在执行第一排除步骤的过程中或者在执行第一排除步骤之后得到的资源集合，经过第一排除步骤和第二排除步骤得到的资源集合为第二资源集合；
在第二资源集合中，重选目标资源。
在本申请实施例中，第一排除步骤可以是上文介绍的Step 1，有关Step 1的详细介绍说明可参见上文，这里仅对Step 1进行概括性说明，用于表明各个步骤间的时序关系：
S1、将资源选择窗内的所有可用资源初始化为资源集合A，记资源集合A中全部可用资源的数量为M total；
S2、根据资源侦听窗内的未侦听时隙对资源集合A进行资源排除(Step 1-1)，可选地，该步骤可根据资源池是否激活TB间预留来决定执行或不执行；
S3、根据资源侦听窗内侦听到的第一侧行控制信息对资源集合A中的资源进行排除(Step 1-2)；
S4、如果资源集合A中剩余资源不足M total*X，则提升RSRP阈值LdB(L为大于0的数值，如L＝3)，重新执行Step 1。
终端设备在执行第一排除步骤的过程中或者在执行第一排除步骤之后，执行第二排除步骤。也即，终端设备在执行Step 1的过程中或者在执行Step 1之后，执行第二排除步骤。例如，第一排除步骤包括上文Step 1中的S1～S4，以在执行Step 1的过程中执行第二排除步骤为例，执行时序可以是S1、第二排除步骤、S2、S3、S4，或者也可以是S1、S2、S3、第二排除步骤、S4，等等，本申请对此不作限定。又例如，以在执行Step 1之后执行第二排除步骤为例，执行时序可以是Step 1(依次包括S1、S2、S3和S4)、第二排除步骤，其中，Step 1可能执行一次，也可能执行多次，第二排除步骤可以仅执行一次。另外，第二排除步骤是针对第一资源集合中的资源进行排除。
可选地，第一资源集合包括以下之一：
(1)资源选择窗内的所有可用资源的集合，例如资源选择窗内属于终端设备所用资源池的所有可用资源的集合；
(2)基于资源侦听窗中的侦听结果对资源选择窗内的可用资源进行排除得到的剩余资源集合；
(3)基于资源侦听窗中的未侦听时隙对资源选择窗内的可用资源进行排除得到的剩余资源集合；
(4)基于资源侦听窗中的侦听结果和未侦听时隙，对资源选择窗内的可用资源进行排除得到的剩余资源集合。
也即，第一资源集合可以是上述初始的资源集合A，或者是执行完Step 1-1后的资源集合A，或者是执行完Step 1-2后的资源集合A，或者是执行完Step 1后的资源集合A。
可选地，第二排除步骤所针对的资源包括以下之一：
(1)第一资源集合中的任意一个资源；
(2)第一资源集合中时域位置前a个资源中的任意一个资源，a为正整数；其中，a可以是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现；
(3)第一资源集合中时域位置前b％个资源中的任意一个资源，b为大于0的数值；其中，b可以是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现；可选地，b％是相对于第一资源集合中包含的资源数量而言的；
(4)第一资源集合中时域位置小于或等于第三时刻的资源中的任意一个资源，该第三时刻为第二时刻加上第三偏移量；结合上文介绍，第二时刻为时隙m-T 3或时隙m-T 3-Tr，那么第三时刻为时隙m-T 3+c 或时隙m-T 3-Tr+c，c代表第三偏移量，c可以是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现。可选地，第三时刻大于或等于目标资源集合中时域位置最靠后的资源所对应的时刻。
如果终端设备根据第二载波上的已选资源或已调度资源，确定第一资源集合中的某一资源不能用于在第一载波上传输，则终端设备对第一资源集合中的该资源进行排除。示例性地，上述终端设备根据第二载波上的已选资源或已调度资源，确定第一资源集合中的资源不能用于在第一载波上传输的因素包括以下至少一个：
(1)终端设备支持的同时进行发送的载波数目
(2)载波聚合或结合的限制
(3)由于射频重新调整导致的中断
在本申请实施例中，将经过第一排除步骤和第二排除步骤得到的资源集合称为第二资源集合。终端设备在得到第二资源集合之后，对于目标资源集合中不支持在第一载波上进行传输的目标资源，终端设备在该第二资源集合中重选该目标资源。
需要说明的是，上述第一排除步骤和第二排除步骤可能执行一遍，也可能执行多遍。以在执行第一排除步骤(即Step 1)的过程中执行第二排除步骤为例，当经过一轮排除步骤(例如按序执行S1、第二排除步骤、S2、S3、S4，或者按序执行S1、S2、S3、第二排除步骤、S4，等等)后得到的资源集合中剩余资源不足M total*X，则提升RSRP阈值一定数值，然后重新执行新一轮的排除步骤，最终经过若干轮排除步骤之后，最终得到的资源集合中剩余资源大于或等于M total*X，则将该资源集合确定为第二资源集合。或者，以执行第一排除步骤(即Step 1)之后执行第二排除步骤为例，那么由于S4的存在，Step 1可能会执行多遍，在得到剩余资源大于或等于M total*X的资源集合之后，执行一次第二排除步骤，经过第二排除步骤得到的资源集合即为第二资源集合。需要说明的是，如果在执行第一排除步骤(即Step 1)的过程中执行第二排除步骤，第二资源集合中的资源数量是大于或等于M total*X的；如果在执行第一排除步骤(即Step1)之后执行第二排除步骤，第二资源集合中的资源数量不一定大于或等于M total*X，也可能小于M total*X。
本申请提出至少在传输当前载波的已选资源之前(如在指示或传输当前载波的已选资源之前)，根据其他载波上最新的已选资源或已调度资源情况，对当前载波上的已选资源进行评估，如果无法在当前已选资源上进行发送，则触发资源重选。通过这种方式，能够解决终端设备在初始选择资源时排除资源不准确的问题，提高了载波聚合场景下选择资源的准确性。
请参考图10，其示出了本申请另一个实施例提供的载波聚合场景下的资源选择方法的流程图。该方法可应用于图1所示的网络架构中，例如该方法可以由终端设备执行。该方法可以包括如下步骤(1010～1030)：
步骤1010，第一排除步骤：确定第一载波对应的资源选择窗和资源侦听窗；基于资源侦听窗中的侦听结果和/或未侦听时隙，对资源选择窗内的可用资源进行排除。
步骤1020，第二排除步骤：在执行第一排除步骤的过程中或者在执行第一排除步骤之后，根据第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，第一资源集合是指在执行第一排除步骤的过程中或者在执行第一排除步骤之后得到的资源集合，经过第一排除步骤和第二排除步骤得到的资源集合为第二资源集合。
步骤1030，从第二资源集合中选择传输资源。
结合参考图11，终端设备在时隙n触发资源选择(或资源重选，或高层触发物理层上报候选资源集合)。终端设备确定从n-T 0到n-T proc,0的资源侦听窗(可选地，不包括n-T proc,0)，以及从n+T 1到n+T 2的资源选择窗。终端设备执行第一排除步骤，并在执行第一排除步骤的过程中或者在执行第一排除步骤之后，执行第二排除步骤对第一资源集合中的资源进行排除。
在本申请实施例中，第一排除步骤可以是上文介绍的Step 1，有关Step 1的详细介绍说明可参见上文，这里仅对Step 1进行概括性说明，用于表明各个步骤间的时序关系：
S1、将资源选择窗内的所有可用资源初始化为资源集合A，记资源集合A中全部可用资源的数量为M total；
S2、根据资源侦听窗内的未侦听时隙对资源集合A进行资源排除(Step 1-1)，可选地，该步骤可根据资源池是否激活TB间预留来决定执行或不执行；
S3、根据资源侦听窗内侦听到的第一侧行控制信息对资源集合A中的资源进行排除(Step 1-2)；
S4、如果资源集合A中剩余资源不足M total*X，则提升RSRP阈值LdB(L为大于0的数值，如L＝3)，重新执行Step 1。
终端设备在执行第一排除步骤的过程中或者在执行第一排除步骤之后，执行第二排除步骤。也即，终端设备在执行Step 1的过程中或者在执行Step 1之后，执行第二排除步骤。例如，第一排除步骤包括上文Step 1中的S1～S4，以在执行Step 1的过程中执行第二排除步骤为例，执行时序可以是S1、第二排除步骤、 S2、S3、S4，或者也可以是S1、S2、S3、第二排除步骤、S4，等等，本申请对此不作限定。又例如，以在执行Step 1之后执行第二排除步骤为例，执行时序可以是Step 1(依次包括S1、S2、S3和S4)、第二排除步骤，其中，Step 1可能执行一次，也可能执行多次，第二排除步骤可以仅执行一次。另外，第二排除步骤是针对第一资源集合中的资源进行排除。
可选地，第一资源集合包括以下之一：
(1)资源选择窗内的所有可用资源的集合，例如资源选择窗内属于终端设备所用资源池的所有可用资源的集合；
(2)基于资源侦听窗中的侦听结果对资源选择窗内的可用资源进行排除得到的剩余资源集合；
(3)基于资源侦听窗中的未侦听时隙对资源选择窗内的可用资源进行排除得到的剩余资源集合；
(4)基于资源侦听窗中的侦听结果和未侦听时隙，对资源选择窗内的可用资源进行排除得到的剩余资源集合。
也即，第一资源集合可以是上述初始的资源集合A，或者是执行完Step 1-1后的资源集合A，或者是执行完Step 1-2后的资源集合A，或者是执行完Step 1后的资源集合A。
可选地，第二排除步骤所针对的资源包括以下之一：
(1)第一资源集合中的任意一个资源；
(2)第一资源集合中时域位置前a个资源中的任意一个资源，a为正整数；其中，a可以是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现；
(3)第一资源集合中时域位置前b％个资源中的任意一个资源，b为大于0的数值；其中，b可以是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现；可选地，b％是相对于第一资源集合中包含的资源数量而言的；
(4)第一资源集合中时域位置小于或等于第四时刻的资源中的任意一个资源，第四时刻为触发时刻加上第四偏移量，其中，触发时刻包括以下之一：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报候选资源集合的时刻。可选地，第四偏移量为大于0的数值，第四偏移量可以是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现。
如果终端设备根据第二载波上的已选资源或已调度资源，确定第一资源集合中的某一资源不能用于在第一载波上传输，则终端设备对第一资源集合中的该资源进行排除。示例性地，上述终端设备根据第二载波上的已选资源或已调度资源，确定第一资源集合中的资源不能用于在第一载波上传输的因素包括以下至少一个：
(1)终端设备支持的同时进行发送的载波数目
例如图11中，终端设备只支持同时在两个载波上进行传输，且终端设备已经在载波2和载波3上分别选择了资源o和a，且资源o和a与第一资源集合中的资源在时域上重叠，则终端设备确定不支持在载波1的该资源上进行传输，需从第一资源集合中排除该资源。
(2)载波聚合或结合的限制
例如图11中，终端设备不支持在载波1和载波2上进行聚合或结合，即在载波2传输时不能在载波1上传输，如果终端设备在载波2上选择了资源o，且资源o与第一资源集合中的资源在时域上重叠，则终端设备判断不支持在载波1的该资源上进行传输，需从第一资源集合中排除该资源。
(3)由于射频重新调整导致的中断
例如图11中，终端设备不支持在载波1和载波2上进行聚合或结合，即在载波2传输时不能在载波1上传输，当在载波2上传输完成后如果需要在载波1上传输，应重新调整设备硬件或射频，再在载波1上传输。在重新调整的时间内，终端设备无法进行传输。终端设备在载波2的资源o上传输后，需要在时隙t i到t j间进行射频调整，若第一资源集合中的资源与时隙t i到t j在时域上重叠，则终端设备判断不支持在载波1的该资源上进行传输，需从第一资源集合中排除该资源。
又例如终端设备支持两套射频，或者称为两个射频链(RF Chain)。射频链1用于载波1和载波2的传输，射频链2用于载波3上的传输。因此，终端设备需要调整射频链1从而支持两个载波的传输，同理，终端设备在载波2的资源o上传输后进行射频重新调整的时间如果与第一资源集合中的资源在时域上重叠，则终端设备判断不支持在载波1的该资源上进行传输，需从第一资源集合中排除该资源。
在本申请实施例中，将经过第一排除步骤和第二排除步骤得到的资源集合称为第二资源集合。终端设备在得到该第二资源集合之后，从第二资源集合中选择传输资源，例如从第二资源集合中随机选择传输资源。可选地，物理层将上述第二资源集合上报给高层，高层从第二资源集合中选择传输资源，例如高层从第二资源集合中随机选择传输资源。
需要说明的是，上述第一排除步骤和第二排除步骤可能执行一遍，也可能执行多遍。以在执行第一排除步骤(即Step 1)的过程中执行第二排除步骤为例，当经过一轮排除步骤(例如按序执行S1、第二排除 步骤、S2、S3、S4，或者按序执行S1、S2、S3、第二排除步骤、S4，等等)后得到的资源集合中剩余资源不足M total*X，则提升RSRP阈值一定数值，然后重新执行新一轮的排除步骤，最终经过若干轮排除步骤之后，最终得到的资源集合中剩余资源大于或等于M total*X，则将该资源集合确定为第二资源集合。或者，以执行第一排除步骤(即Step 1)之后执行第二排除步骤为例，那么由于S4的存在，Step 1可能会执行多遍，在得到剩余资源大于或等于M total*X的资源集合之后，执行一次第二排除步骤，经过第二排除步骤得到的资源集合即为第二资源集合。需要说明的是，如果在执行第一排除步骤(即Step 1)的过程中执行第二排除步骤，第二资源集合中的资源数量是大于或等于M total*X的；如果在执行第一排除步骤(即Step1)之后执行第二排除步骤，第二资源集合中的资源数量不一定大于或等于M total*X，也可能小于M total*X。
本申请对于载波聚合场景，在执行针对当前载波的第一排除步骤(即基于资源侦听窗中的侦听结果和/或未侦听时隙，对资源选择窗内的可用资源进行排除)的过程中或者在执行该第一排除步骤之后，根据其他载波上的已选资源或已调度资源，对当前载波上时域位置靠前的候选资源进行评估，解决大量候选资源被排除的问题，避免终端设备由于可选资源数目较少导致的通信可靠性降低。
下述为本申请装置实施例，可以用于执行本申请方法实施例。对于本申请装置实施例中未披露的细节，请参照本申请方法实施例。
请参考图12，其示出了本申请一个实施例提供的载波聚合场景下的资源选择装置的框图。该装置具有实现上述方法示例的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该装置可以是上文介绍的终端设备，也可以设置于在终端设备中。如图12所示，该装置1200可以包括：评估模块1210。
评估模块1210，用于在第二时刻根据第二载波上的已选资源或已调度资源，对目标资源集合中的目标资源进行评估；
其中，所述目标资源集合包括在第一时刻指示的第一载波上的已选资源，所述第二时刻位于所述第一时刻之前。
在示例性实施例中，所述第二时刻为所述第一时刻减去第一偏移量，或者，所述第二时刻为所述第一时刻减去第一偏移量和第二偏移量。
可选地，所述第一偏移量是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现。
可选地，所述第二偏移量为随机偏移量。
可选地，所述第二偏移量大于0，和/或，所述第二偏移量小于或等于T max，其中，T max是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现。
可选地，所述目标资源集合包括以下之一：
在所述第一时刻用于传输的所述第一载波上的已选资源；
在所述第一时刻指示的所述第一载波上的已选资源；
在所述第一时刻指示，且未在所述第一时刻之前指示的所述第一载波上的已选资源；
在所述第一时刻指示，且已在所述第一时刻之前指示的所述第一载波上的已选资源。
在示例性实施例中，所述评估模块1210，用于：
执行第一排除步骤：在所述第二时刻确定所述第一载波对应的资源选择窗和资源侦听窗；基于所述资源侦听窗中的侦听结果和/或未侦听时隙，对所述资源选择窗内的可用资源进行排除；
执行第二排除步骤：在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后，根据所述第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，所述第一资源集合是指在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后得到的资源集合，经过所述第一排除步骤和所述第二排除步骤得到的资源集合为第二资源集合；
对于所述目标资源集合中的目标资源，若所述目标资源不在所述第二资源集合中，则在所述第二资源集合中重选所述目标资源。
在示例性实施例中，所述评估模块1210，用于：
对于所述目标资源集合中的目标资源，若在所述第二时刻根据所述第二载波上的已选资源或已调度资源，确定在所述第一载波上不支持使用所述目标资源进行传输，则对所述目标资源进行重选。
可选地，所述评估模块1210，用于：
执行第一排除步骤：确定所述第一载波对应的资源选择窗和资源侦听窗；基于所述资源侦听窗中的侦听结果和/或未侦听时隙，对所述资源选择窗内的可用资源进行排除；
执行第二排除步骤：在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后，根据所述第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，所述第一资源集合是指在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后得到的资源集合，经过所述第一排除 步骤和所述第二排除步骤得到的资源集合为第二资源集合；
在所述第二资源集合中，重选所述目标资源。
可选地，所述第一资源集合包括以下之一：
所述资源选择窗内的所有可用资源的集合；
基于所述资源侦听窗中的侦听结果对所述资源选择窗内的可用资源进行排除得到的剩余资源集合；
基于所述资源侦听窗中的未侦听时隙对所述资源选择窗内的可用资源进行排除得到的剩余资源集合；
基于所述资源侦听窗中的侦听结果和未侦听时隙，对所述资源选择窗内的可用资源进行排除得到的剩余资源集合。
可选地，所述第二排除步骤所针对的资源包括以下之一：
所述第一资源集合中的任意一个资源；
所述第一资源集合中时域位置前a个资源中的任意一个资源，a为正整数；
所述第一资源集合中时域位置前b％个资源中的任意一个资源，b为大于0的数值；
所述第一资源集合中时域位置小于或等于第三时刻的资源中的任意一个资源，所述第三时刻为所述第二时刻加上第三偏移量。
请参考图13，其示出了本申请另一个实施例提供的载波聚合场景下的资源选择装置的框图。该装置具有实现上述方法示例的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。该装置可以是上文介绍的终端设备，也可以设置于在终端设备中。如图13所示，该装置1300可以包括：排除模块1310和选择模块1320。
排除模块1310，用于执行第一排除步骤：确定第一载波对应的资源选择窗和资源侦听窗；基于所述资源侦听窗中的侦听结果和/或未侦听时隙，对所述资源选择窗内的可用资源进行排除；
所述排除模块1310，还用于执行第二排除步骤：在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后，根据第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，所述第一资源集合是指在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后得到的资源集合，经过所述第一排除步骤和所述第二排除步骤得到的资源集合为第二资源集合；
选择模块1320，用于从所述第二资源集合中选择传输资源。
可选地，所述第一资源集合包括以下之一：
所述资源选择窗内的所有可用资源的集合；
基于所述资源侦听窗中的侦听结果对所述资源选择窗内的可用资源进行排除得到的剩余资源集合；
基于所述资源侦听窗中的未侦听时隙对所述资源选择窗内的可用资源进行排除得到的剩余资源集合；
基于所述资源侦听窗中的侦听结果和未侦听时隙，对所述资源选择窗内的可用资源进行排除得到的剩余资源集合。
可选地，所述第二排除步骤所针对的资源包括以下之一：
所述第一资源集合中的任意一个资源；
所述第一资源集合中时域位置前a个资源中的任意一个资源，a为正整数；
所述第一资源集合中时域位置前b％个资源中的任意一个资源，b为大于0的数值；
所述第一资源集合中时域位置小于或等于第四时刻的资源中的任意一个资源，所述第四时刻为触发时刻加上第四偏移量，其中，所述触发时刻包括以下之一：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报候选资源集合的时刻。
需要说明的一点是，上述实施例提供的装置在实现其功能时，仅以上述各个功能模块的划分进行举例说明，实际应用中，可以根据实际需要而将上述功能分配由不同的功能模块完成，即将设备的内容结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
请参考图14，其示出了本申请一个实施例提供的终端设备140的结构示意图，例如，该终端设备可以用于执行上述载波聚合场景下的资源选择方法。具体来讲：该终端设备140可以包括：处理器141、接收器142、发射器143、存储器144和总线145。
处理器141包括一个或者一个以上处理核心，处理器141通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
接收器142和发射器143可以实现为一个收发器146，该收发器146可以是一块通信芯片。
存储器144通过总线145与处理器141相连。
存储器144可用于存储计算机程序，处理器141用于执行该计算机程序，以实现上述方法实施例中的终端设备执行的各个步骤。
此外，存储器144可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，易失性或非易失性存储设备包括但不限于：RAM(Random-Access Memory，随机存储器)和ROM(Read-Only Memory，只读存储器)、EPROM(Erasable Programmable Read-Only Memory，可擦写可编程只读存储器)、EEPROM(Electrically Erasable Programmable Read-Only Memory，电可擦写可编程只读存储器)、闪存或其他固态存储其技术，CD-ROM(Compact Disc Read-Only Memory，只读光盘)、DVD(Digital Video Disc，高密度数字视频光盘)或其他光学存储、磁带盒、磁带、磁盘存储或其他磁性存储设备。
在一示例性实施例中，所述处理器141，用于在第二时刻根据第二载波上的已选资源或已调度资源，对目标资源集合中的目标资源进行评估；
其中，所述目标资源集合包括在第一时刻指示的第一载波上的已选资源，所述第二时刻位于所述第一时刻之前。
在另一示例性实施例中，所述处理器141，用于执行第一排除步骤：确定第一载波对应的资源选择窗和资源侦听窗；基于所述资源侦听窗中的侦听结果和/或未侦听时隙，对所述资源选择窗内的可用资源进行排除；
所述处理器141，还用于执行第二排除步骤：在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后，根据第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，所述第一资源集合是指在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后得到的资源集合，经过所述第一排除步骤和所述第二排除步骤得到的资源集合为第二资源集合；
所述处理器141，还用于从所述第二资源集合中选择传输资源。
对于上述实施例中未详细说明的细节，可参见上文方法实施例中的介绍说明，此处不再赘述。
本申请实施例还提供了一种计算机可读存储介质，所述存储介质中存储有计算机程序，所述计算机程序用于被终端设备的处理器执行，以实现上述载波聚合场景下的资源选择方法。
可选地，该计算机可读存储介质可以包括：ROM(Read-Only Memory，只读存储器)、RAM(Random-Access Memory，随机存储器)、SSD(Solid State Drives，固态硬盘)或光盘等。其中，随机存取记忆体可以包括ReRAM(Resistance Random Access Memory，电阻式随机存取记忆体)和DRAM(Dynamic Random Access Memory，动态随机存取存储器)。
本申请实施例还提供了一种芯片，所述芯片包括可编程逻辑电路和/或程序指令，当所述芯片在终端设备上运行时，用于实现上述载波聚合场景下的资源选择方法。
本申请实施例还提供了一种计算机程序产品或计算机程序，所述计算机程序产品或计算机程序包括计算机指令，所述计算机指令存储在计算机可读存储介质中，终端设备的处理器从所述计算机可读存储介质读取并执行所述计算机指令，以实现上述载波聚合场景下的资源选择方法。
应理解，在本申请的实施例中提到的“指示”可以是直接指示，也可以是间接指示，还可以是表示具有关联关系。举例说明，A指示B，可以表示A直接指示B，例如B可以通过A获取；也可以表示A间接指示B，例如A指示C，B可以通过C获取；还可以表示A和B之间具有关联关系。
在本申请实施例的描述中，术语“对应”可表示两者之间具有直接对应或间接对应的关系，也可以表示两者之间具有关联关系，也可以是指示与被指示、配置与被配置等关系。
在本文中提及的“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
另外，本文中描述的步骤编号，仅示例性示出了步骤间的一种可能的执行先后顺序，在一些其它实施例中，上述步骤也可以不按照编号顺序来执行，如两个不同编号的步骤同时执行，或者两个不同编号的步骤按照与图示相反的顺序执行，本申请实施例对此不作限定。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本申请实施例所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述仅为本申请的示例性实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (33)

  1. 一种载波聚合场景下的资源选择方法，其特征在于，所述方法由终端设备执行，所述方法包括：
    在第二时刻根据第二载波上的已选资源或已调度资源，对目标资源集合中的目标资源进行评估；
    其中，所述目标资源集合包括在第一时刻指示的第一载波上的已选资源，所述第二时刻位于所述第一时刻之前。
  2. 根据权利要求1所述的方法，其特征在于，所述第二时刻为所述第一时刻减去第一偏移量，或者，所述第二时刻为所述第一时刻减去第一偏移量和第二偏移量。
  3. 根据权利要求2所述的方法，其特征在于，所述第一偏移量是标准规定的预设值，或由网络配置，或预配置，或取决于所述终端设备的实现。
  4. 根据权利要求2或3所述的方法，其特征在于，所述第二偏移量为随机偏移量。
  5. 根据权利要求2至4任一项所述的方法，其特征在于，所述第二偏移量大于0，和/或，所述第二偏移量小于或等于T max，其中，T max是标准规定的预设值，或由网络配置，或预配置，或取决于所述终端设备的实现。
  6. 根据权利要求1至5任一项所述的方法，其特征在于，所述目标资源集合包括以下之一：
    在所述第一时刻用于传输的所述第一载波上的已选资源；
    在所述第一时刻指示的所述第一载波上的已选资源；
    在所述第一时刻指示，且未在所述第一时刻之前指示的所述第一载波上的已选资源；
    在所述第一时刻指示，且已在所述第一时刻之前指示的所述第一载波上的已选资源。
  7. 根据权利要求1至6任一项所述的方法，其特征在于，所述在第二时刻根据第二载波上的已选资源或已调度资源，对目标资源集合中的目标资源进行评估，包括：
    第一排除步骤：在所述第二时刻确定所述第一载波对应的资源选择窗和资源侦听窗；基于所述资源侦听窗中的侦听结果和/或未侦听时隙，对所述资源选择窗内的可用资源进行排除；
    第二排除步骤：在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后，根据所述第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，所述第一资源集合是指在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后得到的资源集合，经过所述第一排除步骤和所述第二排除步骤得到的资源集合为第二资源集合；
    对于所述目标资源集合中的目标资源，若所述目标资源不在所述第二资源集合中，则在所述第二资源集合中重选所述目标资源。
  8. 根据权利要求1至6任一项所述的方法，其特征在于，所述在第二时刻根据第二载波上的已选资源或已调度资源，对目标资源集合中的目标资源进行评估，包括：
    对于所述目标资源集合中的目标资源，若在所述第二时刻根据所述第二载波上的已选资源或已调度资源，确定在所述第一载波上不支持使用所述目标资源进行传输，则对所述目标资源进行重选。
  9. 根据权利要求8所述的方法，其特征在于，所述对所述目标资源进行重选，包括：
    第一排除步骤：确定所述第一载波对应的资源选择窗和资源侦听窗；基于所述资源侦听窗中的侦听结果和/或未侦听时隙，对所述资源选择窗内的可用资源进行排除；
    第二排除步骤：在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后，根据所述第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，所述第一资源集合是指在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后得到的资源集合，经过所述第一排除步骤和所述第二排除步骤得到的资源集合为第二资源集合；
    在所述第二资源集合中，重选所述目标资源。
  10. 根据权利要求7或9所述的方法，其特征在于，所述第一资源集合包括以下之一：
    所述资源选择窗内的所有可用资源的集合；
    基于所述资源侦听窗中的侦听结果对所述资源选择窗内的可用资源进行排除得到的剩余资源集合；
    基于所述资源侦听窗中的未侦听时隙对所述资源选择窗内的可用资源进行排除得到的剩余资源集合；
    基于所述资源侦听窗中的侦听结果和未侦听时隙，对所述资源选择窗内的可用资源进行排除得到的剩余资源集合。
  11. 根据权利要求7、9或10所述的方法，其特征在于，所述第二排除步骤所针对的资源包括以下之一：
    所述第一资源集合中的任意一个资源；
    所述第一资源集合中时域位置前a个资源中的任意一个资源，a为正整数；
    所述第一资源集合中时域位置前b％个资源中的任意一个资源，b为大于0的数值；
    所述第一资源集合中时域位置小于或等于第三时刻的资源中的任意一个资源，所述第三时刻为所述第二时刻加上第三偏移量。
  12. 一种载波聚合场景下的资源选择方法，其特征在于，所述方法由终端设备执行，所述方法包括：
    第一排除步骤：确定第一载波对应的资源选择窗和资源侦听窗；基于所述资源侦听窗中的侦听结果和/或未侦听时隙，对所述资源选择窗内的可用资源进行排除；
    第二排除步骤：在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后，根据第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，所述第一资源集合是指在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后得到的资源集合，经过所述第一排除步骤和所述第二排除步骤得到的资源集合为第二资源集合；
    从所述第二资源集合中选择传输资源。
  13. 根据权利要求12所述的方法，其特征在于，所述第一资源集合包括以下之一：
    所述资源选择窗内的所有可用资源的集合；
    基于所述资源侦听窗中的侦听结果对所述资源选择窗内的可用资源进行排除得到的剩余资源集合；
    基于所述资源侦听窗中的未侦听时隙对所述资源选择窗内的可用资源进行排除得到的剩余资源集合；
    基于所述资源侦听窗中的侦听结果和未侦听时隙，对所述资源选择窗内的可用资源进行排除得到的剩余资源集合。
  14. 根据权利要求12或13所述的方法，其特征在于，所述第二排除步骤所针对的资源包括以下之一：
    所述第一资源集合中的任意一个资源；
    所述第一资源集合中时域位置前a个资源中的任意一个资源，a为正整数；
    所述第一资源集合中时域位置前b％个资源中的任意一个资源，b为大于0的数值；
    所述第一资源集合中时域位置小于或等于第四时刻的资源中的任意一个资源，所述第四时刻为触发时刻加上第四偏移量，其中，所述触发时刻包括以下之一：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报候选资源集合的时刻。
  15. 一种载波聚合场景下的资源选择装置，其特征在于，所述装置包括：
    评估模块，用于在第二时刻根据第二载波上的已选资源或已调度资源，对目标资源集合中的目标资源进行评估；
    其中，所述目标资源集合包括在第一时刻指示的第一载波上的已选资源，所述第二时刻位于所述第一时刻之前。
  16. 根据权利要求15所述的装置，其特征在于，所述第二时刻为所述第一时刻减去第一偏移量，或者，所述第二时刻为所述第一时刻减去第一偏移量和第二偏移量。
  17. 根据权利要求16所述的装置，其特征在于，所述第一偏移量是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现。
  18. 根据权利要求16或17所述的装置，其特征在于，所述第二偏移量为随机偏移量。
  19. 根据权利要求16至18任一项所述的装置，其特征在于，所述第二偏移量大于0，和/或，所述第二偏移量小于或等于T max，其中，T max是标准规定的预设值，或由网络配置，或预配置，或取决于终端设备的实现。
  20. 根据权利要求16至19任一项所述的装置，其特征在于，所述目标资源集合包括以下之一：
    在所述第一时刻用于传输的所述第一载波上的已选资源；
    在所述第一时刻指示的所述第一载波上的已选资源；
    在所述第一时刻指示，且未在所述第一时刻之前指示的所述第一载波上的已选资源；
    在所述第一时刻指示，且已在所述第一时刻之前指示的所述第一载波上的已选资源。
  21. 根据权利要求15至20任一项所述的装置，其特征在于，所述评估模块，用于：
    执行第一排除步骤：在所述第二时刻确定所述第一载波对应的资源选择窗和资源侦听窗；基于所述资源侦听窗中的侦听结果和/或未侦听时隙，对所述资源选择窗内的可用资源进行排除；
    执行第二排除步骤：在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后，根据所述第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，所述第一资源集合是指在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后得到的资源集合，经过所述第一排除步骤和所述第二排除步骤得到的资源集合为第二资源集合；
    对于所述目标资源集合中的目标资源，若所述目标资源不在所述第二资源集合中，则在所述第二资源集合中重选所述目标资源。
  22. 根据权利要求15至20任一项所述的装置，其特征在于，所述评估模块，用于：
    对于所述目标资源集合中的目标资源，若在所述第二时刻根据所述第二载波上的已选资源或已调度资 源，确定在所述第一载波上不支持使用所述目标资源进行传输，则对所述目标资源进行重选。
  23. 根据权利要求22所述的装置，其特征在于，所述评估模块，用于：
    执行第一排除步骤：确定所述第一载波对应的资源选择窗和资源侦听窗；基于所述资源侦听窗中的侦听结果和/或未侦听时隙，对所述资源选择窗内的可用资源进行排除；
    执行第二排除步骤：在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后，根据所述第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，所述第一资源集合是指在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后得到的资源集合，经过所述第一排除步骤和所述第二排除步骤得到的资源集合为第二资源集合；
    在所述第二资源集合中，重选所述目标资源。
  24. 根据权利要求21或23所述的装置，其特征在于，所述第一资源集合包括以下之一：
    所述资源选择窗内的所有可用资源的集合；
    基于所述资源侦听窗中的侦听结果对所述资源选择窗内的可用资源进行排除得到的剩余资源集合；
    基于所述资源侦听窗中的未侦听时隙对所述资源选择窗内的可用资源进行排除得到的剩余资源集合；
    基于所述资源侦听窗中的侦听结果和未侦听时隙，对所述资源选择窗内的可用资源进行排除得到的剩余资源集合。
  25. 根据权利要求21、23或24所述的装置，其特征在于，所述第二排除步骤所针对的资源包括以下之一：
    所述第一资源集合中的任意一个资源；
    所述第一资源集合中时域位置前a个资源中的任意一个资源，a为正整数；
    所述第一资源集合中时域位置前b％个资源中的任意一个资源，b为大于0的数值；
    所述第一资源集合中时域位置小于或等于第三时刻的资源中的任意一个资源，所述第三时刻为所述第二时刻加上第三偏移量。
  26. 一种载波聚合场景下的资源选择装置，其特征在于，所述装置包括：
    排除模块，用于执行第一排除步骤：确定第一载波对应的资源选择窗和资源侦听窗；基于所述资源侦听窗中的侦听结果和/或未侦听时隙，对所述资源选择窗内的可用资源进行排除；
    所述排除模块，还用于执行第二排除步骤：在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后，根据第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，所述第一资源集合是指在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后得到的资源集合，经过所述第一排除步骤和所述第二排除步骤得到的资源集合为第二资源集合；
    选择模块，用于从所述第二资源集合中选择传输资源。
  27. 根据权利要求26所述的装置，其特征在于，所述第一资源集合包括以下之一：
    所述资源选择窗内的所有可用资源的集合；
    基于所述资源侦听窗中的侦听结果对所述资源选择窗内的可用资源进行排除得到的剩余资源集合；
    基于所述资源侦听窗中的未侦听时隙对所述资源选择窗内的可用资源进行排除得到的剩余资源集合；
    基于所述资源侦听窗中的侦听结果和未侦听时隙，对所述资源选择窗内的可用资源进行排除得到的剩余资源集合。
  28. 根据权利要求26或27所述的装置，其特征在于，所述第二排除步骤所针对的资源包括以下之一：
    所述第一资源集合中的任意一个资源；
    所述第一资源集合中时域位置前a个资源中的任意一个资源，a为正整数；
    所述第一资源集合中时域位置前b％个资源中的任意一个资源，b为大于0的数值；
    所述第一资源集合中时域位置小于或等于第四时刻的资源中的任意一个资源，所述第四时刻为触发时刻加上第四偏移量，其中，所述触发时刻包括以下之一：触发资源选择的时刻、触发资源重选的时刻、高层触发物理层上报候选资源集合的时刻。
  29. 一种终端设备，其特征在于，所述终端设备包括处理器；
    所述处理器，用于在第二时刻根据第二载波上的已选资源或已调度资源，对目标资源集合中的目标资源进行评估；
    其中，所述目标资源集合包括在第一时刻指示的第一载波上的已选资源，所述第二时刻位于所述第一时刻之前。
  30. 一种终端设备，其特征在于，所述终端设备包括处理器；
    所述处理器，用于执行第一排除步骤：确定第一载波对应的资源选择窗和资源侦听窗；基于所述资源侦听窗中的侦听结果和/或未侦听时隙，对所述资源选择窗内的可用资源进行排除；
    所述处理器，还用于执行第二排除步骤：在执行所述第一排除步骤的过程中或者在执行所述第一排除 步骤之后，根据第二载波上的已选资源或已调度资源，对第一资源集合中的资源进行排除；其中，所述第一资源集合是指在执行所述第一排除步骤的过程中或者在执行所述第一排除步骤之后得到的资源集合，经过所述第一排除步骤和所述第二排除步骤得到的资源集合为第二资源集合；
    所述处理器，还用于从所述第二资源集合中选择传输资源。
  31. 一种计算机可读存储介质，其特征在于，所述存储介质中存储有计算机程序，所述计算机程序用于被处理器执行，以实现如权利要求1至14任一项所述的载波聚合场景下的资源选择方法。
  32. 一种芯片，其特征在于，所述芯片包括可编程逻辑电路和/或程序指令，当所述芯片运行时，用于实现如权利要求1至14任一项所述的载波聚合场景下的资源选择方法。
  33. 一种计算机程序产品或计算机程序，其特征在于，所述计算机程序产品或计算机程序包括计算机指令，所述计算机指令存储在计算机可读存储介质中，处理器从所述计算机可读存储介质读取并执行所述计算机指令，以实现如权利要求1至14任一项所述的载波聚合场景下的资源选择方法。
PCT/CN2021/093921 2021-05-14 2021-05-14 载波聚合场景下的资源选择方法、装置、设备及存储介质 WO2022236829A1 (zh)

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