WO2022027510A1 - 资源指示和资源选择方法以及装置 - Google Patents

资源指示和资源选择方法以及装置 Download PDF

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WO2022027510A1
WO2022027510A1 PCT/CN2020/107564 CN2020107564W WO2022027510A1 WO 2022027510 A1 WO2022027510 A1 WO 2022027510A1 CN 2020107564 W CN2020107564 W CN 2020107564W WO 2022027510 A1 WO2022027510 A1 WO 2022027510A1
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Prior art keywords
resource
terminal device
resources
side link
identifier
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PCT/CN2020/107564
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English (en)
French (fr)
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纪鹏宇
王昕�
张磊
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富士通株式会社
纪鹏宇
王昕�
张磊
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Priority to PCT/CN2020/107564 priority Critical patent/WO2022027510A1/zh
Publication of WO2022027510A1 publication Critical patent/WO2022027510A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria

Definitions

  • the embodiments of the present application relate to the field of communication technologies.
  • Mode 1 In Rel-15 and previous versions of the Internet of Vehicles (V2X, Vehicle to Everything) communication, two allocation methods of side link (Sidelink) resources are supported: Mode 1 and Mode 2.
  • Mode 1 side link resources are allocated by network equipment (such as base stations) and obtained;
  • Mode 2 terminal equipment autonomously selects transmission resources, that is, transmission resources are obtained through sensing or detection-resource selection process.
  • New Radio (NR, New Radio) V2X is one of the research projects of Rel-16 standardization. Compared with Long Term Evolution (LTE, Long Term Evolution) V2X, NR V2X needs to support many new scenarios and new services ( For example, remote driving, autonomous driving and fleet driving, etc.), need to meet higher technical indicators (high reliability, low latency, high data rate, etc.).
  • LTE Long Term Evolution
  • NR V2X needs to support many new scenarios and new services ( For example, remote driving, autonomous driving and fleet driving, etc.), need to meet higher technical indicators (high reliability, low latency, high data rate, etc.).
  • V2X terminal devices due to the half-duplex feature of V2X terminal devices, if two V2X terminal devices send data to each other at the same time, both terminal devices will not be able to receive data normally, and in some cases, continuous transmission and reception collisions may occur. This results in continuous packet loss and greatly reduces reliability.
  • embodiments of the present application provide a resource indication and resource selection method and apparatus.
  • a resource indication method including:
  • the second terminal device generates resource information, the resource information including transmission resources used by the second terminal device for sidelink transmission;
  • the second terminal device sends the resource information to the first terminal device.
  • a resource indication apparatus which is configured in a second terminal device, and the apparatus includes:
  • a generating unit that generates resource information, the resource information including a transmission resource used by the second terminal device for sidelink transmission;
  • a sending unit which sends the resource information to the first terminal device.
  • a resource selection method including:
  • the first terminal device receives resource information sent by the second terminal device or other terminal devices, where the resource information includes sending resources used by the second terminal device for sidelink transmission;
  • the first terminal device performs sidelink resource selection or reselection according to the resource information.
  • a resource selection apparatus which is configured in a first terminal device, and the apparatus includes:
  • a receiving unit which receives resource information sent by a second terminal device or other terminal devices, where the resource information includes sending resources used by the second terminal device for sidelink transmission;
  • a selection unit which performs side link resource selection or reselection according to the resource information.
  • the second terminal device reports resource information to the first terminal device, where the resource information includes sending resources used by the second terminal device for sidelink sending.
  • the first terminal device can select resources according to the resource information, and can avoid selecting these resources, thereby avoiding the generation of the half-duplex problem, and improving the reliability of V2X communication.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a terminal device performing side link resource selection
  • Fig. 3 is a schematic diagram of continuous collision caused by V2X UE due to half-duplex characteristic
  • FIG. 4 is a schematic diagram of a resource indication method according to an embodiment of the present application.
  • FIG. 5 is an exemplary diagram of a scenario including multiple sessions according to an embodiment of the present application.
  • FIG. 6 is another exemplary diagram of a scenario including multiple sessions according to an embodiment of the present application.
  • FIG. 7 is another exemplary diagram of a scenario including multiple sessions according to an embodiment of the present application.
  • FIG. 8 is an example diagram of sending resources in auxiliary information according to an embodiment of the present application.
  • FIG. 9 is another example diagram of sending resources in auxiliary information according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a resource selection method according to an embodiment of the present application.
  • FIG. 11 is an example diagram of resource exclusion when the target identifier in an embodiment of the present application is a second terminal device
  • FIG. 13 is a schematic diagram of a resource indication device according to an embodiment of the present application.
  • FIG. 14 is a schematic diagram of a resource selection apparatus according to an embodiment of the present application.
  • 15 is a schematic diagram of a network device according to an embodiment of the present application.
  • FIG. 16 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terms “first”, “second”, etc. are used to distinguish different elements in terms of numelation, but do not indicate the spatial arrangement or temporal order of these elements, and these elements should not be referred to by these terms restricted.
  • the term “and/or” includes any and all combinations of one or more of the associated listed items.
  • the terms “comprising”, “including”, “having”, etc. refer to the presence of stated features, elements, elements or components, but do not preclude the presence or addition of one or more other features, elements, elements or components.
  • the term "communication network” or “wireless communication network” may refer to a network that conforms to any of the following communication standards, such as Long Term Evolution (LTE, Long Term Evolution), Long Term Evolution Enhanced (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access) and so on.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution Enhanced
  • WCDMA Wideband Code Division Multiple Access
  • High-Speed Packet Access High-Speed Packet Access
  • HSPA High-Speed Packet Access
  • the communication between devices in the communication system can be carried out according to communication protocols at any stage, for example, including but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G , New Radio (NR, New Radio), etc., and/or other communication protocols currently known or to be developed in the future.
  • Network device refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device.
  • Network devices may include but are not limited to the following devices: base station (BS, Base Station), access point (AP, Access Point), transmission and reception point (TRP, Transmission Reception Point), broadcast transmitter, mobility management entity (MME, Mobile Management Entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller) and so on.
  • the base station may include but is not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), and 5G base station (gNB), etc., and may also include a remote radio head (RRH, Remote Radio Head) , Remote Radio Unit (RRU, Remote Radio Unit), relay (relay) or low power node (eg femeto, pico, etc.).
  • RRH Remote Radio Head
  • RRU Remote Radio Unit
  • relay relay
  • low power node eg femeto, pico, etc.
  • base station may include some or all of their functions, each base station may provide communication coverage for a particular geographic area.
  • the term "cell” may refer to a base station and/or its coverage area, depending on the context in which the term is used.
  • the term "User Equipment” (UE, User Equipment) or “Terminal Equipment” (TE, Terminal Equipment or Terminal Device), for example, refers to a device that accesses a communication network through a network device and receives network services.
  • a terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS, Mobile Station), a terminal, a subscriber station (SS, Subscriber Station), an access terminal (AT, Access Terminal), a station, and the like.
  • the terminal device may include but is not limited to the following devices: Cellular Phone (Cellular Phone), Personal Digital Assistant (PDA, Personal Digital Assistant), wireless modem, wireless communication device, handheld device, machine type communication device, laptop computer, Cordless phones, smartphones, smart watches, digital cameras, and more.
  • Cellular Phone Cellular Phone
  • PDA Personal Digital Assistant
  • wireless modem wireless communication device
  • handheld device machine type communication device
  • laptop computer Cordless phones, smartphones, smart watches, digital cameras, and more.
  • the terminal device may also be a machine or device that performs monitoring or measurement, such as but not limited to: Machine Type Communication (MTC, Machine Type Communication) terminals, In-vehicle communication terminals, device-to-device (D2D, Device to Device) terminals, machine-to-machine (M2M, Machine to Machine) terminals, etc.
  • MTC Machine Type Communication
  • D2D Device to Device
  • M2M Machine to Machine
  • network side refers to one side of the network, which may be a certain base station, and may also include one or more network devices as described above.
  • user side or “terminal side” or “terminal device side” refers to the side of a user or terminal, which may be a certain UE, or may include one or more terminal devices as above.
  • equipment may refer to network equipment or terminal equipment.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application, which schematically illustrates the case of a terminal device and a network device as an example.
  • a communication system 100 may include a network device 101 and terminal devices 102 and 103 .
  • FIG. 1 only takes two terminal devices and one network device as an example for description, but the embodiment of the present application is not limited to this.
  • Enhanced Mobile Broadband eMBB, enhanced Mobile Broadband
  • Massive Machine Type Communication mMTC, massive Machine Type Communication
  • Ultra-Reliable and Low Latency Communication URLLC, Ultra-Reliable and Low.
  • -Latency Communication etc.
  • FIG. 1 shows that both terminal devices 102 and 103 are within the coverage of the network device 101, but the present application is not limited to this. Both terminal devices 102 , 103 may not be within the coverage of the network device 101 , or one terminal device 102 may be within the coverage of the network device 101 and the other end device 103 may be outside the coverage of the network device 101 .
  • side link transmission may be performed between the two terminal devices 102 and 103 .
  • the two terminal devices 102 and 103 can both perform side link transmission within the coverage of the network device 101 to implement V2X communication, or both can perform side link transmission outside the coverage of the network device 101 to implement V2X
  • one terminal device 102 is within the coverage of the network device 101 and another terminal device 103 is outside the coverage of the network device 101 to perform side link transmission to implement V2X communication.
  • the terminal devices 102 and/or 103 may autonomously select side link resources (ie, adopt Mode2), and in this case, the side link transmission may be independent of the network device 101, that is, the network device 101 is optional .
  • the embodiment of the present application may also combine the autonomous selection of side link resources (that is, using Mode 2) and the allocation of side link resources by the network device (that is, using Mode 1); the embodiment of the present application does not limit this.
  • terminal equipment can obtain side link transmission resources through the process of sensing detection + resource selection, in which sensing can be continuously performed to obtain the occupancy of resources in the resource pool. For example, the terminal device can estimate the resource occupancy in a later period of time (called the selection window) according to the resource occupancy in the previous period of time (called the perception window).
  • FIG 2 is a schematic diagram of a terminal device performing side link resource selection.
  • the terminal device passes the (n-1000)th to (n-1)th subframes or time slots (that is, the sensing window, sensing window). ) in the side link control information (SCI, Sidelink Control Information) and the detection of time-frequency resource reference signals at different locations, the resource occupancy situation of the perception window can be obtained, and then the (n+T1) to ( resource occupancy of n+T2) subframes or time slots (ie selection window, selection window).
  • SCI Sidelink Control Information
  • the physical layer of the terminal device obtains the granularity R x,y of resource selection from a higher layer (eg, a medium access control (MAC, Media Access Control) layer); the granularity may represent a subframe A series of consecutive sub-channels within the sub-channel, each sub-channel includes more than one consecutive Physical Resource Block (PRB, Physical Resource Block), the number of PRBs can be determined by the resource pool, and the resource pool is configured or pre-configured by network devices (such as base stations).
  • Configuration; the set of resources of size R x,y in all subframes in the entire selection window (hereinafter referred to as Rx ,y candidate resources) is initially defined as Set A.
  • the terminal device may exclude some of the candidate resources in Set A according to the detection result within the sensing window before the data to be sent arrives. For example, in Rel-16's NR V2X, the following R x,y candidate resources need to be excluded:
  • DMRS Demodulation Reference Signal
  • PSSCH Physical Sidelink Shared Channel
  • RSRP Reference Signal Receiving Power
  • Th(prio RX ) takes the value corresponding to The high layer parameter ThresRSRP_pi_pj
  • p j is the priority of the data to be sent by the current UE indicated by the high layer
  • p i is the detected priority of other UEs indicated in the SCI;
  • the resources here refer to the candidate resources of set A in the current selection window, and the resources at the periodic positions that may be reserved in the subsequent cycles of the periodic service.
  • the number of Rx ,y candidate resources remaining in Set A is less than 20% of the initial total, increase the RSRP threshold by 3dB, and re-exclude from the initial Set A , until the number of Rx ,y candidate resources remaining in Set A is greater than or equal to 20% of the initial total.
  • R x,y candidate resources in Set A into Set B in ascending order of S-RSSI, until the number of R x,y candidate resources in Set B is greater than or equal to R x in Set A, y is 20% of the initial total number of candidate resources; where, Set B is an initially empty set, and S-RSSI represents the linear average of the signal strengths of all sub-channels in the Rx ,y candidate resources.
  • the physical layer of the terminal device can report Set B to the MAC layer, and the MAC layer randomly selects in Set B and selects a candidate resource for data transmission.
  • MCS demodulation and coding scheme
  • Preemption detection process needs to be performed on the resources currently sent; and the subsequent resources reserved in the SCI corresponding to the current transmission also need to be re-evaluated. Preemption detection and resource re-evaluation also identify whether reserved or selected resources collide with other resources through the above steps.
  • Figure 3 is a schematic diagram of the continuous collision caused by the half-duplex feature of V2X UE. As shown in Figure 3, due to the half-duplex feature of V2X UE, if two UEs (UE A and UE B) send data to each other at the same time data, which will cause the two UEs to fail to receive the data normally.
  • the side link is described by taking V2X as an example, but the present application is not limited to this, and can also be applied to a side link transmission scenario other than V2X.
  • the terms “side link” and “V2X” are interchangeable, the terms “PSFCH” and “side link feedback channel” are interchangeable, and the terms “PSCCH” and “ “Sidelink Control Channel” or “Sidelink Control Information” are interchangeable, as are the terms “PSSCH” and “Sidelink Data Channel” or “Sidelink Data”.
  • transmitting or receiving PSCCH can be understood as sending or receiving side link control information carried by PSCCH; sending or receiving PSSCH can be understood as sending or receiving side link data carried by PSSCH; sending or receiving PSFCH can be understood as sending or receiving side link feedback information carried by PSFCH.
  • Sidelink transmission also called sidelink transmission
  • PSCCH/PSSCH transmission or sidelink data/information transmission can be understood as PSCCH/PSSCH transmission or sidelink data/information transmission.
  • An embodiment of the present application provides a resource indication method, which is described from a second terminal device.
  • the second terminal device may send resource information (also referred to as a resource set, which may be included in the auxiliary information) to the first terminal device.
  • the resource information may indicate the side link resource itself, or may indicate information related to the side link resource, such as priority, RSRP measurement result, and the like.
  • resource information and “auxiliary information” or “resource set” are interchangeable without causing confusion.
  • FIG. 4 is a schematic diagram of a resource indication method according to an embodiment of the present application. As shown in FIG. 4 , the method includes:
  • a second terminal device generates resource information, where the resource information includes sending resources used by the second terminal device for sidelink sending;
  • the second terminal device sends the resource information to the first terminal device.
  • FIG. 4 only schematically illustrates the embodiment of the present application, but the present application is not limited thereto.
  • the execution order of the various operations can be adjusted appropriately, and other operations can be added or some of the operations can be reduced.
  • Those skilled in the art can make appropriate modifications according to the above content, and are not limited to the description of the above-mentioned FIG. 4 .
  • the first terminal device as the sender of a certain unicast service data, can send a side chain to another terminal device (for example, a second terminal device or a third terminal device) road data.
  • the second terminal device may send side link data to one other terminal device (eg, the first terminal device or the fourth terminal device).
  • the first terminal device as the sender of a certain multicast service data, can send side link data to multiple terminal devices belonging to the same group, and the first terminal device can belong to multiple groups and send the data to multiple terminal devices. Multiple groups send sidelink data.
  • the second terminal device may send sidelink data to multiple terminal devices belonging to the same group, and the second terminal device may belong to multiple groups and send sidelink data to multiple groups.
  • the first terminal device as a sender of a certain service data, can send side link data to multiple terminal devices.
  • the second terminal device can send side link data to multiple terminal devices.
  • a third terminal device one or more other terminal devices different from the first terminal device and the second terminal device will be collectively referred to as a third terminal device.
  • the second terminal device may send auxiliary information to the first terminal device (UE A), where the auxiliary information includes the second The resource to be sent by the terminal device (herein referred to as the sending resource); the first terminal device can avoid sending the side link in the same time slot as the second terminal device according to the auxiliary information, so as to avoid the transmission between the first terminal device and the second terminal device.
  • the sending resource The resource to be sent by the terminal device (herein referred to as the sending resource); the first terminal device can avoid sending the side link in the same time slot as the second terminal device according to the auxiliary information, so as to avoid the transmission between the first terminal device and the second terminal device.
  • a half-duplex problem occurs between the second terminal devices.
  • the sending resource indicated in the resource information is the resource used by the second terminal device to communicate with the first terminal device and/or other terminal devices, in the form of a unicast service and/or a multicast service
  • the sender of the corresponding side link transmission is the second terminal device
  • the receiver is the first terminal device and/or other terminal devices.
  • the auxiliary information of the second terminal device may indicate other resources besides its sending resources, such as resources (interference resources) occupied by other terminal devices perceived by the second terminal device,
  • the auxiliary information may also indicate signal strength, priority, and so on.
  • the transmission resource can be indicated by an explicit method, such as the logical channel identifier (LCID) corresponding to the medium access control (MAC) control element (CE, Control Element), or the side link control information (SCI, such as the 2nd of the PSSCH) stage SCI) indication field, or the Information Element (IE, Information Element) of the Radio Resource Control (RRC) message explicitly indicates that a certain resource set is the sending resource set; it can also be indicated by an implicit method, such as the Transmission resources and interference resources are divided into two different sets. Only the sending resources of the second terminal device in the auxiliary information will be described below, and other resources (eg, interference resources) or information may refer to related technologies, and descriptions are omitted herein.
  • LCID logical channel identifier
  • CE medium access control
  • SCI such as the 2nd of the PSSCH
  • IE Information Element
  • RRC Radio Resource Control
  • the sending resources are periodic resources, or the sending resources are aperiodic resources.
  • the resource in the auxiliary information is aperiodic, its time-frequency location can be indicated; for the time domain location, it can be identified by a system frame number (SFN, System FrameNumber) and a slot index offset (slot index offset).
  • SFN System Frame Number
  • slot index offset slot index offset
  • the first end device and/or the second end device may be multi-session.
  • the transmission resources of UE B are not necessarily all used to communicate with UE A, but can also be used to communicate with other terminal devices.
  • the usage of the resource can be identified to perform different processing.
  • the device or the group in which the device is associated with the sending resource can be identified.
  • the resource may be said to be associated with the UE, and/or the destination identifier of the sidelink transmission corresponding to the resource is A certain group ID, the resource can be said to be associated with the group.
  • FIG. 5 is an example diagram of a scene including multiple sessions according to an embodiment of the present application
  • FIG. 6 is another example diagram of a scene including multiple sessions according to an embodiment of the present application
  • Another example image of a scenario for a session As shown in Figures 5 to 7, there may be multiple unicast/multicast sessions for one UE at the same time.
  • UE B corresponds to the second UE
  • UE A corresponds to the first UE
  • side link transmission is performed between UE A and UE B.
  • UE A has side link data (such as unicast services) sent to UE B and determines the corresponding resources, and its corresponding destination ID (destination ID) is the ID of UE B; and the side link data (for example, multicast services) sent by the group where UE B is located, and determine the corresponding resources, and the corresponding destination identifiers are the identifiers of the groups where UE A and UE B are located.
  • side link data such as unicast services
  • destination ID destination ID
  • the side link data for example, multicast services
  • UE B has sidelink data (such as unicast services) sent to UE A and determines the corresponding resources, and the corresponding destination identifier is the identifier of UE A; or UE B has information to UE A and UE B where The side link data (for example, multicast services) sent by the group and the corresponding resources are determined, and the corresponding destination identifiers are the identifiers of the groups where UE A and UE B are located.
  • sidelink data such as unicast services
  • UE B has information to UE A and UE B where The side link data (for example, multicast services) sent by the group and the corresponding resources are determined, and the corresponding destination identifiers are the identifiers of the groups where UE A and UE B are located.
  • side link transmission is performed between UE A and UE B, and at the same time, UE B also performs side link transmission to UE C.
  • UE A has sidelink data sent to UE B and determines the corresponding resources, and its corresponding destination identifier is the identifier of UE B, or UE A has sidelink data sent to the group where UE A and UE B belong And the corresponding resources are determined, and the corresponding destination identifiers are the identifiers of the groups where UE A and UE B are located.
  • UE B has some side link data sent to UE A and determines the corresponding resources, and its corresponding destination ID is the ID of UE A, or UE B has a side link sent to UE A and UE B's group
  • the corresponding destination identifier is the identifier of the group where UE A and UE B are located; UE B has other side link data sent to UE C and determines the corresponding resources, the corresponding The destination identifier is the identifier of UE C, or UE B has sidelink data sent to the group where UE C and UE B are located and determines the corresponding resources, and the corresponding destination identifier is the identifier of the group where UE C and UE B are located.
  • side link transmission is performed between UE A and UE B; at the same time, UE B also performs side link transmission to UE C, and UE A also performs side link transmission to UE D.
  • UE A has some side link data sent to UE B and determines the corresponding resources, and its corresponding destination identifier is the identifier of UE B, or UE A has side chain data sent to the group of UE A and UE B.
  • the corresponding destination identifier is the identifier of the group where UE A and UE B are located; UE A has other side link data sent to UE D and determines the corresponding resources, the corresponding The destination identifier is the identifier of UE D, or UE A has sidelink data sent to the group where UE A and UE D are located and determines the corresponding resources, and the corresponding destination identifier is the identifier of the group where UE D and UE A are located.
  • UE B has some side link data sent to UE A and determines the corresponding resources, and its corresponding destination ID is the ID of UE A, or UE B has a side link sent to UE A and UE B's group
  • the corresponding destination identifier is the identifier of the group where UE A and UE B are located; UE B has other side link data sent to UE C and determines the corresponding resources, the corresponding The destination identifier is the identifier of UE C, or UE B has sidelink data sent to the group where UE C and UE B are located and determines the corresponding resources, and the corresponding destination identifier is the identifier of the group where UE C and UE B are located.
  • UE A may perform a corresponding resource exclusion process (possibly corresponding to resource selection/resource selection) according to these transmission resources reselection/resource re-evaluation/preemption detection). For example, UE A can select a resource in a different time slot than UE B's transmission resource for sidelink transmission, avoiding the half-duplex problem between UE A and UE B.
  • the transmission resources included in the auxiliary information notified by UE B to UE A if the destination identifier of the side link transmission corresponding to the transmission resources of UE B is distinguished, it may be possible to avoid excessive resource exclusion by UE A.
  • UE A will use resources corresponding to UE B to UE A during resource exclusion. All resources in the time slot where the resources used for the transmission of UE B to UE C and the resources used for transmission by UE B are excluded. However, if the destination identifier sent by the side link of UE A is UE D (or the group where UE A and UE D are located) at this time, the resources used for sending from UE B to UE C will not be sent to the UE.
  • a half-duplex problem occurs between A and UE B; therefore, if all candidate resources in the time slot where such resources are located are excluded, the candidate resources of UE A will be reduced, which is not conducive to the randomness of resource selection. Affects the transmission performance of UE A.
  • the sending resources in the resource information in this embodiment of the present application may be classified, for example, may be classified into a first resource set and a second resource set.
  • the destination identifiers sent through the corresponding side links can be classified, but the present application is not limited to this.
  • the resource information includes one or more sending resources; at least a part of the one or more sending resources belongs to the first resource set.
  • the destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the first terminal device, and/or the destination identifier sent by the side link corresponding to the resource in the first resource set is the first terminal device and The identifier of the group in which the second terminal device is located. That is, the resources in the first resource set are used to send sidelink data (unicast and/or multicast) to the first terminal device, and may be referred to as being associated with the first terminal device.
  • the logical channel identifier (LCID) corresponding to the medium access control (MAC) control element (CE, Control Element) indicates that the destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the first terminal device
  • the indication field of the side link control information indicates that the destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the first terminal device
  • the information element (IE, Information Element) of the resource control (RRC) message indicates that the destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the first terminal device.
  • the logical channel identifier (LCID) corresponding to the MAC CE indicates that the destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the group where the first terminal device and the second terminal device are located, or, by The indication field of the SCI indicates that the destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the group where the first terminal device and the second terminal device are located, or the IE of the RRC message indicates the resource in the first resource set.
  • the destination identifier sent by the corresponding side link is the identifier of the group where the first terminal device and the second terminal device are located.
  • the second terminal device sends unicast service data (eg, unicast data packets) to the first terminal device by using the resources in the first resource set; or, the second terminal device uses the resources in the first resource set
  • the resource sends multicast service data (eg, multicast data packets) to the group where the first terminal device and the second terminal device are located.
  • the resource information includes one or more sending resources; at least a part of the one or more sending resources belongs to the second resource set.
  • the second resource set is different from the first resource set and may be said to be not associated with the first terminal device.
  • the number of the second resource set is one, and the resources in the second resource set are used by the second terminal device to send unicast service data and/or multicast to a third terminal device different from the first terminal device Service data;
  • the destination identifier sent by the side link corresponding to the resources in the second resource set (maybe some resources or all resources) is the identifier of the third terminal device, and/or, in the second resource set
  • the destination identifier sent by the side link corresponding to the resource (may be a part of the resource or all the resource) is the identifier of the group to which the third terminal device and the second terminal device are located.
  • the number of the second resource set is one, and the resources in the second resource set are used by the second terminal device to send unicast service data and/or groups to multiple third terminal devices different from the first terminal device broadcast service data;
  • the destination identifier sent by the side links corresponding to some resources in the second resource set is an identifier of a third terminal device, and/or the destination identifier sent by the side links corresponding to some resources in the second resource set is An identifier of the group in which the third terminal device and the second terminal device are located.
  • the number of second resource sets is multiple, and the resources in one second resource set are used by the second terminal device to send unicast service data and/or multicast to a third terminal device different from the first terminal device Service data;
  • the destination identifier sent by the side link corresponding to the resource (may be a part of the resource, or all the resource) in a second resource set is an identifier of a third terminal device, and/or, in a second resource set
  • the destination identifier sent by the side link corresponding to the resource (may be a part of the resource or all the resource) is the identifier of a third terminal device and the group where the second terminal device is located.
  • the resources in the second resource set (may be part of the resources or all the resources) are used by the second terminal device to send broadcast service data (for example, broadcast data packets).
  • broadcast service data for example, broadcast data packets
  • FIG. 8 is an example diagram of sending resources in auxiliary information according to an embodiment of the present application, and shows a situation of a second resource set.
  • UE B corresponds to the second UE
  • UE A corresponds to the first UE.
  • the sending resources included in the auxiliary information sent by UE B to UE A include resource set #1 and resource set #2.
  • the resource set #1 corresponds to the resources that UE B uses to send to UE A or the group to which UE A and UE B belong, and this correspondence can be explicitly or implicitly notified to UE A.
  • the set can be indicated by the set ID as the first resource set, and the resources included in the set are the resources used by UE B to send to UE A or the group to which UE A and UE B belong; it can also be indicated by the destination UE ID
  • the corresponding resource is the resource that UE B uses to send to UE A, or the group to which UE A and UE B belong.
  • the set to which the corresponding resource belongs is the first resource set; the set ID and the destination UE ID can also be indicated. .
  • the corresponding set ID can also be indicated by the LCID corresponding to the MAC CE, or the corresponding field in the SCI, or the IE in the RRC message, but the present application is not limited to this. Furthermore, if the resource set is to be explicitly associated with the destination identification, additional bits may also be used to indicate in the above possible information. It should be noted that the resource set #1 or the resource set #2 may be an empty set.
  • a part of resources in the second resource set is associated with a third terminal device (eg UE C in FIG. 8 ), and another part of resources in the second resource set is associated with another third terminal device (eg UE C in FIG. 8 ) E) association, another part of the resources in the second resource set are used for broadcasting services.
  • a third terminal device eg UE C in FIG. 8
  • another part of resources in the second resource set is associated with another third terminal device (eg UE C in FIG. 8 ) E) association
  • another part of the resources in the second resource set are used for broadcasting services.
  • Fig. 9 is another example diagram of sending resources in auxiliary information according to an embodiment of the present application, and shows a situation where multiple second resource sets are assembled.
  • UE B corresponds to the second UE
  • UE A corresponds to the first UE.
  • the sending resources included in the auxiliary information sent by UE B to UE A include resource set #1, resource set #2...resource set #N.
  • Resource set #1 corresponds to the resources used by UE B to send to UE A or the group to which UE A and UE B belong.
  • Resource set #2...resource set #N respectively correspond to the remaining destination UEs or groups. This correspondence can be explicitly It can also be implicitly notified to UE A; resource set #2...resource set #N can also be used for broadcast services.
  • the corresponding set ID can also be indicated by the LCID corresponding to the MAC CE, or the corresponding field in the SCI, or the IE in the RRC message, but the present application is not limited to this. Furthermore, if the resource set is to be explicitly associated with the destination identification, additional bits may also be used to indicate in the above possible information. It should be noted that, resource set #1 or resource set #2 or ... resource set #N may be an empty set.
  • the first terminal device will exclude all candidate resources of the time slot where the resource is located, therefore, the auxiliary information may only indicate the corresponding index of the time slot where the resource is located (index) without indicating specific frequency domain resources, thereby reducing the overhead of auxiliary information.
  • the second terminal device reports resource information to the first terminal device, where the resource information includes sending resources used by the second terminal device for sidelink sending.
  • the first terminal device can perform resource selection according to the resource information, and can avoid selecting these resources so as to avoid the generation of the half-duplex problem.
  • the transmission resources in the resource information are classified, which can avoid excessive exclusion of resources by the first terminal device and avoid too few candidate resources, thereby ensuring the randomness of resource selection, and reducing the collision probability of resource selection, ensuring that The transmission performance of the first terminal device.
  • This embodiment of the present application provides a resource selection method, which is described from the first terminal device.
  • the first terminal device may receive resource information sent by the second terminal device (refer to the description of the embodiment of the first aspect), and may also receive resource information forwarded by other terminal devices.
  • the same content as the embodiment of the first aspect will not be repeated.
  • FIG. 10 is a schematic diagram of a resource selection method according to an embodiment of the present application. As shown in FIG. 10 , the method includes:
  • a first terminal device receives resource information sent by a second terminal device or other terminal devices, where the resource information includes sending resources used by the second terminal device for sidelink sending;
  • the first terminal device performs side link resource selection or reselection according to the resource information.
  • FIG. 10 only schematically illustrates the embodiment of the present application, but the present application is not limited thereto.
  • the execution order of the various operations can be adjusted appropriately, and other operations can be added or some of the operations can be reduced.
  • Those skilled in the art can make appropriate modifications according to the above content, and are not limited to the description of the above-mentioned FIG. 10 .
  • the second terminal device may send auxiliary information to the first terminal device (UE A), or may send auxiliary information to The other terminal equipment is forwarded to the first terminal equipment (UE A) by the other terminal equipment.
  • the auxiliary information includes the resources to be sent by the second terminal device, and the first terminal device can avoid sending in the same time slot as the second terminal device according to the auxiliary information, thereby avoiding the need for the first terminal device and the second terminal device to transmit in the same time slot.
  • a half-duplex problem occurs between devices.
  • the first terminal device performs side link resource selection or reselection according to the resource information when the side link transmission needs to be performed; or performs side link resource reselection according to the resource information , the resource reselection is triggered by the result of resource re-evaluation or preemption detection performed by the first terminal device.
  • resource selection/resource reselection/resource re-evaluation/preemption detection For the specific content of resource selection/resource reselection/resource re-evaluation/preemption detection, reference may be made to related technologies, which will not be repeated here.
  • the first terminal device further excludes the corresponding resource from the candidate resource set according to the sending resource of the second terminal device in the resource information based on the destination identifier sent by the side link of the first terminal device.
  • the resource selection of the first terminal device may be performed by the physical layer, and the destination identifier sent by the side link may be provided to the physical layer by the MAC layer of the first terminal device.
  • the resource selection of the first terminal device may be performed by the physical layer, and the destination identifier sent by the side link may be provided to the physical layer by the MAC layer of the first terminal device.
  • the first terminal device when the destination identifier sent by the side link of the first terminal device is the identifier of the second terminal device, or the identifier of the group in which the first terminal device and the second terminal device are located, the first terminal device The device excludes all candidate resources in the time slot where all resources in all resource sets in the resource information are located.
  • FIG. 11 is an example diagram of resource exclusion when the target identifier in an embodiment of the present application is a second terminal device.
  • the sending resource is as described in the embodiment of the first aspect, including resource set #1, resource set #2 . . . resource set #N.
  • the first UE (UE B) When performing resource exclusion, all candidate resources in time slots (as shown in FIG. 11 , including time slots 1101 , 1102 , 1103 , and 1104 ) in all resource sets are excluded.
  • the first terminal device performs sidelink reception in the time slot where the resources of the first resource set in the resource information are located; wherein, the destination identifier of the sidelink transmission corresponding to the resources in the first resource set is: The identifier of the first terminal device, or, the destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the group where the first terminal device and the second terminal device are located.
  • the first terminal device may perform side link reception in time slot 1101 as shown in FIG. 11 , of course, the first terminal device may also perform side link reception in time slots 1102, 1103, and 1104, or in time slots 1102, 1102, and 1104. 1103 and 1104 perform side link transmission to other terminal devices.
  • the first terminal device A terminal device excludes all candidate resources in the time slot where all the resources in the first resource set in the resource information are located.
  • the first terminal device may also exclude candidate resources that overlap with resources of other resource sets other than the first resource set in the resource information.
  • FIG. 12 is an example diagram of resource exclusion when the destination identifier is not the second terminal device according to an embodiment of the present application.
  • the sending resources may be as described in the embodiment of the first aspect, including resource set #1, resource set #2 . . . resource set #N.
  • the first UE performs resource selection/reselection/re-evaluation and preemption detection with a target identifier other than the second UE (not UE B, such as UE D)
  • the first UE performs When the resource is excluded, all candidate resources in the time slot (as shown in FIG. 12 , including the time slot 1201 ) where all the resources in the first resource set are located are excluded.
  • all candidate resources in the time slots are not excluded, but only candidates that overlap with these resources are excluded. resource. Thereby, excessive exclusion of resources can be avoided.
  • the first terminal device further determines whether to exclude resources from other resource sets according to measurement results of reference signal received power (RSRP) of resources in other resource sets other than the first resource set in the resource information Overlapping candidate resources.
  • RSRP reference signal received power
  • all candidate resources in the time slot are not excluded, but according to the corresponding resources of these resources.
  • the measurement results of RSRP determine whether to exclude candidate resources that overlap with these resources. For details on how to determine and how to exclude, you can refer to related technologies.
  • the first terminal device performs sidelink reception in the time slot where the resources of the first resource set in the resource information are located; wherein, the destination identifier of the sidelink transmission corresponding to the resources in the first resource set is: The identifier of the first terminal device, or, the destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the group where the first terminal device and the second terminal device are located.
  • the first terminal device may perform side link reception at timeslot 1201 as shown in FIG. 12 .
  • the other resource set is a second resource set, and the resources in the second resource set are used by the second terminal device to send unicast service data to a third terminal device different from the first terminal device and/or multicast service data;
  • the destination identifier sent by the side link corresponding to the resource (may be a part of the resource or all the resource) in the second resource set is the identifier of the third terminal device, and/or, the first The destination identifiers sent by the side links corresponding to the resources in the second resource set (which may be part of the resources or all the resources) are the identifiers of the groups where the third terminal device and the second terminal device are located.
  • the other resource set is a second resource set, and the resources in the second resource set are used by the second terminal device to send unicast services to multiple third terminal devices different from the first terminal device data and/or multicast service data;
  • the destination identifier sent by the side link corresponding to some resources in the second resource set is the identifier of a third terminal device, and/or, the side link corresponding to some resources in the second resource set
  • the sent destination identifier is an identifier of a group where the third terminal device and the second terminal device are located.
  • the other resource sets are multiple second resource sets, and the resources of one second resource set are used by the second terminal device to send a unicast service to a third terminal device different from the first terminal device data and/or multicast service data;
  • the destination identifier sent by the side link corresponding to the resource (may be a part of the resource or all the resource) in a second resource set is an identifier of a third terminal device, and/or,
  • the destination identifier sent by the side link corresponding to the resource (may be a part of the resource or all the resource) in a second resource set is an identifier of a group where the third terminal device and the second terminal device are located.
  • the resources in the second resource set (which may be part of the resources, or all the resources) are used by the second terminal device to send the broadcast service data.
  • the first terminal device may use these resources for sidelink transmission.
  • the specific content of the side link transmission reference may be made to the related art.
  • the second terminal device reports resource information to the first terminal device, where the resource information includes sending resources used by the second terminal device for sidelink sending.
  • the first terminal device can perform resource selection according to the resource information, and can avoid selecting these resources so as to avoid the generation of the half-duplex problem.
  • the transmission resources in the resource information are classified, which can avoid excessive exclusion of resources by the first terminal device, avoid too few candidate resources, thereby ensure the randomness of resource selection, and can reduce the collision probability of resource selection, ensuring that The transmission performance of the first terminal device.
  • Embodiments of the present application provide a resource indication device.
  • the apparatus may be, for example, a terminal device (eg, the aforementioned second terminal device), or may be one or some components or components configured in the terminal device, and the same content as the embodiment of the first aspect will not be repeated.
  • FIG. 13 is a schematic diagram of a resource indicating device according to an embodiment of the present application. As shown in FIG. 13 , the resource indication apparatus 1300 includes:
  • a sending unit 1302 which sends the resource information to the first terminal device.
  • the sending resources are periodic resources, or the sending resources are aperiodic resources.
  • the resource information includes one or more sending resources; at least a part of the one or more sending resources belongs to the first resource set.
  • the destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the first terminal device, and/or the edge corresponding to the resource in the first resource set
  • the destination identifier sent by the link is the identifier of the group to which the first terminal device and the second terminal device belong.
  • the logical channel identifier corresponding to the medium access control element indicates that the destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the first terminal device, or, through The indication field of the side link control information indicates that the destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the first terminal device, or the information element of the radio resource control message indicates that the The destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the first terminal device.
  • the logical channel identifier corresponding to the medium access control element indicates that the destination identifier sent by the side link corresponding to the resource in the first resource set is the first terminal device and the second terminal.
  • the sending unit 1302 is further configured to: use the resources in the first resource set to send unicast service data to the first terminal device; or, use the resources in the first resource set to send unicast service data to the first terminal device The group in which the first terminal device and the second terminal device are located sends multicast service data.
  • the resource information includes one or more sending resources; at least a part of the one or more sending resources belongs to the second resource set.
  • the number of the second resource set is one, and the resources in the second resource set are used by the second terminal device to provide a third terminal device different from the first terminal device Sending unicast service data and/or multicast service data;
  • the destination identifier sent by the side link corresponding to the resource in the second resource set is the identifier of the third terminal device, and/or, the second resource set
  • the destination identifier sent by the side link corresponding to the medium resource is the identifier of the group in which the third terminal device and the second terminal device are located.
  • the number of the second resource set is one, and the resources in the second resource set are used by the second terminal device to provide multiple third terminals different from the first terminal device
  • the device sends unicast service data and/or multicast service data;
  • the destination identifier sent by the side link corresponding to some resources in the second resource set is an identifier of a third terminal device, and/or, the second resource
  • the destination identifiers sent by the side links corresponding to some of the resources in the set are the identifiers of a third terminal device and a group where the second terminal device is located.
  • the number of the second resource set is multiple, and the resources in one second resource set are used by the second terminal device to provide a third terminal device different from the first terminal device Send unicast service data and/or multicast service data;
  • the destination identifier sent by the side link corresponding to the resource in a second resource set is an identifier of a third terminal device, and/or, the resource in a second resource set is sent.
  • the destination identifier sent by the corresponding side link is an identifier of a third terminal device and a group where the second terminal device is located.
  • the resources in the second resource set are used by the second terminal device for sending broadcast service data.
  • the resource indicating apparatus 1300 may further include other components or modules, and for the specific content of these components or modules, reference may be made to the related art.
  • FIG. 13 only exemplarily shows the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used.
  • the above-mentioned components or modules may be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc. The implementation of this application does not limit this.
  • the second terminal device reports resource information to the first terminal device, where the resource information includes sending resources used by the second terminal device for sidelink sending.
  • the first terminal device can perform resource selection according to the resource information, and can avoid selecting these resources so as to avoid the generation of the half-duplex problem.
  • the sending resources in the resource information are classified by the destination identifier sent by the corresponding side link, which can avoid excessive exclusion of resources by the first terminal device, avoid too few candidate resources, and ensure the randomness of resource selection, and The collision probability of resource selection can be reduced, and the transmission performance of the first terminal device can be guaranteed.
  • Embodiments of the present application provide a resource selection apparatus.
  • the apparatus may be, for example, a terminal device (eg, the aforementioned first terminal device), or one or some components or components configured in the terminal device, and the same content as the embodiment of the second aspect will not be repeated.
  • FIG. 14 is a schematic diagram of a resource selection apparatus according to an embodiment of the present application. As shown in FIG. 14, the resource selection apparatus 1400 includes:
  • a receiving unit 1401 which receives resource information sent by a second terminal device or other terminal devices, where the resource information includes sending resources used by the second terminal device for sidelink transmission;
  • a selection unit 1402 which performs side link resource selection or reselection according to the resource information.
  • the first terminal device may use these resources for sidelink transmission.
  • the selection unit 1402 performs resource selection/reselection
  • the first terminal device may use these resources for sidelink transmission.
  • the specific content of the side link transmission reference may be made to the related art.
  • the side link resource selection or reselection is performed according to the resource information; or, the side link resource reselection is performed according to the resource information.
  • the resource reselection is triggered by the result of resource re-evaluation or preemption detection.
  • the selecting unit 1402 further excludes the corresponding candidate from the candidate resource set based on the destination identifier sent by the side link of the first terminal device and according to the sending resource of the second terminal device in the resource information resources to perform the sidelink resource selection or reselection.
  • the destination identifier sent on the side link of the first terminal device is the identifier of the second terminal device, or the identifier of the group to which the first terminal device and the second terminal device belong.
  • the selecting unit 1402 excludes all candidate resources in the time slot where all resources in all resource sets in the resource information are located.
  • the receiving unit 1401 is further configured to: perform side link reception in the time slot where the resources of the first resource set in the resource information are located; wherein, the side links corresponding to the resources in the first resource set
  • the destination identifier sent by the channel is the identifier of the first terminal device, or the destination identifier sent by the side link corresponding to the resource in the first resource set is the location where the first terminal device and the second terminal device are located. the identity of the group.
  • the destination identifier sent on the side link of the first terminal device is not the identifier of the second terminal device, or is not the location where the first terminal device and the second terminal device are located.
  • the selection unit 1402 excludes all candidate resources in the time slot where all the resources in the first resource set in the resource information are located.
  • the selection unit 1402 further excludes candidate resources that overlap with resources in other resource sets other than the first resource set in the resource information.
  • the selecting unit 1402 further determines, according to the measurement result of the reference signal received power of the resources in the other resource sets other than the first resource set in the resource information, whether to exclude the resources in the other resource sets Overlapping candidate resources.
  • the receiving unit 1401 is further configured to: perform side link reception in the time slot where the resources of the first resource set in the resource information are located; wherein, the side links corresponding to the resources in the first resource set
  • the destination identifier sent by the channel is the identifier of the first terminal device, or the destination identifier sent by the side link corresponding to the resource in the first resource set is the location where the first terminal device and the second terminal device are located. the identity of the group.
  • the resource selection apparatus 1400 may also include other components or modules, and for the specific content of these components or modules, reference may be made to related technologies.
  • FIG. 14 only exemplarily shows the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used.
  • the above-mentioned components or modules may be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc., which are not limited in the implementation of this application.
  • the second terminal device reports resource information to the first terminal device, where the resource information includes sending resources used by the second terminal device for sidelink sending.
  • the first terminal device can perform resource selection according to the resource information, and can avoid selecting these resources so as to avoid the generation of the half-duplex problem.
  • the sending resources in the resource information are classified by the destination identifier sent by the corresponding side link, which can avoid excessive exclusion of resources by the first terminal device, avoid too few candidate resources, and ensure the randomness of resource selection, and The collision probability of resource selection can be reduced, and the transmission performance of the first terminal device can be guaranteed.
  • An embodiment of the present application further provides a communication system, and reference may be made to FIG. 1 , and the same content as the embodiments of the first aspect to the fourth aspect will not be repeated.
  • the communication system 100 may include at least:
  • a first terminal device which receives resource information, where the resource information includes transmission resources used by the second terminal device for sidelink transmission; and performs sidelink resource selection or reselection according to the resource information;
  • the second terminal device generates and sends the resource information.
  • the embodiment of the present application also provides a network device, which may be, for example, a base station, but the present application is not limited to this, and may also be other network devices.
  • a network device which may be, for example, a base station, but the present application is not limited to this, and may also be other network devices.
  • FIG. 15 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • the network device 1500 may include: a processor 1510 (eg, a central processing unit CPU) and a memory 1520 ; the memory 1520 is coupled to the processor 1510 .
  • the memory 1520 can store various data; in addition, the program 1530 for information processing is also stored, and the program 1530 is executed under the control of the processor 1510 .
  • the network device 1500 may further include: a transceiver 1540, an antenna 1550, etc.; wherein, the functions of the above components are similar to those in the prior art, and are not repeated here. It is worth noting that the network device 1500 does not necessarily include all the components shown in FIG. 15 ; in addition, the network device 1500 may also include components not shown in FIG. 15 , and reference may be made to the prior art.
  • the embodiment of the present application also provides a terminal device, but the present application is not limited to this, and may also be other devices.
  • FIG. 16 is a schematic diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 1600 may include a processor 1610 and a memory 1620 ; the memory 1620 stores data and programs, and is coupled to the processor 1610 .
  • this figure is exemplary; other types of structures may be used in addition to or in place of this structure to implement telecommunication functions or other functions.
  • the processor 1610 may be configured to execute a program to implement the resource indication method described in the embodiment of the first aspect.
  • the processor 1610 may be configured to perform the following controls: generate resource information, the resource information including the transmission resources used by the second terminal device for sidelink transmission; and send the resource information to the first terminal device .
  • the processor 1610 may be configured to execute a program to implement the resource selection method described in the embodiments of the second aspect.
  • the processor 1610 may be configured to control the following: receive resource information sent by the second terminal device or other terminal devices, the resource information including the sending resources used by the second terminal device for sidelink transmission; and Side link resource selection or reselection is performed according to the resource information.
  • the terminal device 1600 may further include: a communication module 1630 , an input unit 1640 , a display 1650 , and a power supply 1660 .
  • the functions of the above components are similar to those in the prior art, and details are not repeated here. It is worth noting that the terminal device 1600 does not necessarily include all the components shown in FIG. 16 , and the above components are not required; in addition, the terminal device 1600 may also include components not shown in FIG. 16 . There is technology.
  • the embodiment of the present application further provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the resource indication method according to the embodiment of the first aspect.
  • An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the resource indication method described in the embodiment of the first aspect.
  • the embodiment of the present application further provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the resource selection method according to the embodiment of the second aspect.
  • the embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program causes the terminal device to execute the resource selection method described in the embodiment of the second aspect.
  • the apparatuses and methods above in the present application may be implemented by hardware, or may be implemented by hardware combined with software.
  • the present application relates to a computer-readable program that, when executed by logic components, enables the logic components to implement the above-described apparatus or constituent components, or causes the logic components to implement the above-described various methods or steps.
  • the present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, and the like.
  • the method/apparatus described in conjunction with the embodiments of this application may be directly embodied as hardware, a software module executed by a processor, or a combination of the two.
  • one or more of the functional block diagrams shown in the figures and/or one or more combinations of the functional block diagrams may correspond to either software modules or hardware modules of the computer program flow.
  • These software modules may respectively correspond to the various steps shown in the figure.
  • These hardware modules can be implemented by, for example, solidifying these software modules using a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • a software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium can be coupled to the processor, such that the processor can read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and storage medium may reside in an ASIC.
  • the software module can be stored in the memory of the mobile terminal, or can be stored in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • the functional blocks and/or one or more combinations of the functional blocks described in the figures can be implemented as a general-purpose processor, a digital signal processor (DSP) for performing the functions described in this application ), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof.
  • DSP digital signal processor
  • ASICs Application Specific Integrated Circuits
  • FPGAs Field Programmable Gate Arrays
  • One or more of the functional blocks and/or one or more combinations of the functional blocks described with respect to the figures can also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors processor, one or more microprocessors in communication with the DSP, or any other such configuration.
  • a resource indication method comprising:
  • the second terminal device generates resource information, the resource information including transmission resources used by the second terminal device for sidelink transmission;
  • the second terminal device sends the resource information to the first terminal device.
  • Supplement 2 The method according to Supplement 1, wherein the sending resources are periodic resources, or the sending resources are aperiodic resources.
  • Supplement 3 The method according to Supplement 1 or 2, wherein the resource information includes one or more sending resources; and at least a part of the one or more sending resources belongs to the first resource set.
  • Supplement 4 The method according to Supplement 3, wherein the destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the first terminal device, and/or the first The destination identifier sent by the side link corresponding to the resource in a resource set is the identifier of the group in which the first terminal device and the second terminal device are located.
  • Supplement 5 The method according to Supplement 4, wherein a logical channel identifier corresponding to a medium access control (MAC) control element (CE) is used to indicate that the resource sent by the side link corresponding to the resource in the first resource set is used.
  • the destination identifier is the identifier of the first terminal device, or the destination identifier sent by the side link corresponding to the resource in the first resource set is indicated by the indication field of the side link control information (SCI) as the first
  • SCI side link control information
  • the identifier of the terminal device, or, through an information element (IE) of a Radio Resource Control (RRC) message it is indicated that the destination identifier of the sidelink transmission corresponding to the resource in the first resource set is the identifier of the first terminal device.
  • IE information element
  • RRC Radio Resource Control
  • Supplement 6 The method according to Supplement 4, wherein a logical channel identifier corresponding to a medium access control (MAC) control element (CE) is used to instruct the side link corresponding to the resource in the first resource set to transmit
  • the destination identifier is the identifier of the group in which the first terminal device and the second terminal device are located, or the edge corresponding to the resource in the first resource set is indicated by the indication field of the side link control information (SCI).
  • the destination identifier sent by the link is the identifier of the group to which the first terminal device and the second terminal device are located, or the information element (IE) of the radio resource control (RRC) message indicates that the first resource set is in the first resource set.
  • the destination identifier sent by the side link corresponding to the resource is the identifier of the group to which the first terminal device and the second terminal device belong.
  • Supplement 7 The method according to any one of Supplementary Notes 3 to 6, wherein the method further comprises:
  • the second terminal device sends unicast service data to the first terminal device by using the resources in the first resource set; or, the second terminal device uses the resources in the first resource set to send the unicast service data to the first terminal device;
  • the group to which the first terminal device and the second terminal device are located sends multicast service data.
  • Supplement 8 The method according to Supplement 1 or 2, wherein the resource information includes one or more sending resources; and at least a part of the one or more sending resources belongs to the second resource set.
  • Supplement 9 The method according to Supplement 8, wherein the number of the second resource set is one, and the resources in the second resource set are used by the second terminal equipment
  • a third terminal device of a terminal device sends unicast service data and/or multicast service data.
  • Supplement 10 The method according to Supplement 9, wherein the destination identifier sent by the side link corresponding to the resource in the second resource set is the identifier of the third terminal device, and/or the first The destination identifier sent by the side link corresponding to the resource in the second resource set is the identifier of the group to which the third terminal device and the second terminal device belong.
  • Supplement 11 The method according to Supplement 8, wherein the number of the second resource set is one, and the resources in the second resource set are used by the second terminal equipment
  • a plurality of third terminal devices of a terminal device send unicast service data and/or multicast service data.
  • Supplement 12 The method according to Supplement 11, wherein the destination identifier sent by the side link corresponding to the part of the resources in the second resource set is an identifier of a third terminal device, and/or the first The destination identifier sent by the side link corresponding to the part of the resources in the second resource set is a third terminal device and the identifier of the group where the second terminal device is located.
  • Supplement 13 The method according to Supplement 8, wherein the number of the second resource set is multiple, and the resources in one second resource set are used by the second terminal device to send a different set of resources to the second resource set.
  • a third terminal device of a terminal device sends unicast service data and/or multicast service data.
  • Supplement 14 The method according to Supplement 13, wherein the destination identifier sent by the side link corresponding to the resource in the second resource set is an identifier of a third terminal device, and/or, a second resource set
  • the destination identifier sent by the side link corresponding to the resource in is the identifier of a third terminal device and the group where the second terminal device is located.
  • Supplement 15 The method according to any one of Supplementary Notes 8 to 14, wherein the resources in the second resource set are used by the second terminal device to send broadcast service data.
  • a resource selection method comprising:
  • the first terminal device receives resource information sent by the second terminal device or other terminal devices, where the resource information includes sending resources used by the second terminal device for sidelink transmission;
  • the first terminal device performs sidelink resource selection or reselection according to the resource information.
  • Supplementary note 17 The method according to supplementary note 16, wherein the first terminal device performs the sidelink resource selection or reselection according to the resource information when the sidelink transmission needs to be performed;
  • the side link resource reselection is performed according to the resource information, and the resource reselection is triggered by a result of resource re-evaluation or preemption detection performed by the first terminal device.
  • Supplement 18 The method according to Supplement 16 or 17, wherein the first terminal device is further based on the destination identifier sent by the side link of the first terminal device, according to the first terminal device in the resource information.
  • the corresponding candidate resources are excluded from the candidate resource set to perform the side link resource selection or reselection.
  • Supplement 19 The method according to Supplement 18, wherein the destination identifier sent on the side link of the first terminal device is the identifier of the second terminal device, or the first terminal device and the other terminal device.
  • the first terminal device excludes all candidate resources in the time slot in which all resources in all resource sets in the resource information are located.
  • Supplement 20 The method according to Supplement 19, wherein the method further comprises:
  • the first terminal device performs side link reception in the time slot where the resources of the first resource set in the resource information are located; wherein, the destination identifier of the side link transmission corresponding to the resources in the first resource set is the The identifier of the first terminal device, or the destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the group in which the first terminal device and the second terminal device belong.
  • Supplement 21 The method according to Supplement 18, wherein the destination identifier sent on the side link of the first terminal device is not the identifier of the second terminal device, or is not the first terminal device and the identifier of the group in which the second terminal device is located, the first terminal device excludes all candidate resources in the time slot in which all the resources in the first resource set in the resource information are located.
  • Supplement 22 The method according to Supplement 21, wherein the first terminal device further excludes candidate resources that overlap with resources in other resource sets other than the first resource set in the resource information.
  • Supplementary note 23 The method according to supplementary note 21, wherein the first terminal device is further based on the reference signal received power (RSRP) of the resources in the resource information other than the first resource set except the first resource set
  • RSRP reference signal received power
  • Supplementary Note 24 The method according to any one of Supplementary Notes 21 to 23, wherein the method further comprises:
  • the first terminal device performs side link reception in the time slot where the resources of the first resource set in the resource information are located; wherein, the destination identifier of the side link transmission corresponding to the resources in the first resource set is the The identifier of the first terminal device, or the destination identifier sent by the side link corresponding to the resource in the first resource set is the identifier of the group in which the first terminal device and the second terminal device belong.
  • Supplementary note 25 The method according to supplementary note 22 or 23, wherein the other resource set is a second resource set, and the resources in the second resource set are used by the second terminal equipment
  • a third terminal device of the first terminal device sends unicast service data and/or multicast service data.
  • Supplement 26 The method according to Supplement 25, wherein the destination identifier sent by the side link corresponding to the resource in the second resource set is the identifier of the third terminal device, and/or the first The destination identifier sent by the side link corresponding to the resource in the second resource set is the identifier of the group to which the third terminal device and the second terminal device are located.
  • Supplement 27 The method according to Supplement 22 or 23, wherein the other resource set is a second resource set, and the resources in the second resource set are used by the second terminal equipment
  • a plurality of third terminal devices of the first terminal device send unicast service data and/or multicast service data.
  • Supplement 28 The method according to Supplement 27, wherein the destination identifier sent by the side link corresponding to some of the resources in the second resource set is an identifier of a third terminal device, and/or the first The destination identifier sent by the side link corresponding to the part of the resources in the second resource set is a third terminal device and the identifier of the group where the second terminal device is located.
  • Supplementary Note 29 The method according to Supplementary Note 22 or 23, wherein the other resource sets are multiple second resource sets, and the resources of one second resource set are used by the second terminal device to send information to different from the other resource sets.
  • a third terminal device of the first terminal device sends unicast service data and/or multicast service data.
  • Supplement 30 The method according to Supplement 29, wherein the destination identifier sent by the side link corresponding to the resource in the second resource set is an identifier of a third terminal device, and/or, a second resource set
  • the destination identifier sent by the side link corresponding to the resource in is the identifier of a third terminal device and the group where the second terminal device is located.
  • Supplementary note 31 The method according to any one of supplementary notes 25 to 30, wherein the resources in the second resource set are used by the second terminal device to send broadcast service data.
  • a terminal device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to realize the resource according to any one of Supplementary Notes 1 to 15
  • the instruction method or is configured to execute the computer program to implement the resource selection method described in any one of Supplementary Notes 16 to 31.

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Abstract

本申请实施例提供一种资源指示和资源选择方法以及装置；所述资源指示方法包括：第二终端设备向第一终端设备上报资源信息，该资源信息包括所述第二终端设备用于进行边链路发送的发送资源。由此，第一终端设备能够根据该资源信息进行资源选择，可以避免选择这些资源从而避免半双工问题的产生，提高V2X通信的可靠性。

Description

资源指示和资源选择方法以及装置 技术领域
本申请实施例涉及通信技术领域。
背景技术
在Rel-15以及之前版本的车联网(V2X，Vehicle to Everything)通信中，支持边链路(Sidelink)资源的两种分配方式：Mode 1和Mode 2。对于Mode 1，边链路资源由网络设备(例如基站)进行分配而获得；对于Mode 2，终端设备自主地选择发送资源，即发送资源通过感知(sensing)或检测-资源选择过程获得。
另一方面，新无线(NR，New Radio)V2X是目前Rel-16标准化的研究项目之一，相比于长期演进(LTE，Long Term Evolution)V2X，NR V2X需要支持诸多新场景和新业务(例如远程驾驶、自动驾驶和车队行驶等)，需要满足更高的技术指标(高可靠、低时延、高数据速率等)。
应该注意，上面对技术背景的介绍只是为了方便对本申请的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本申请的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
发明人发现：由于V2X终端设备的半双工特性，两个V2X终端设备如果同时向对方发送数据，会导致两个终端设备均无法正常接收，某些情况下还有可能会造成连续的收发碰撞导致连续丢包，使可靠性大大地降低。
针对上述问题的至少之一，本申请实施例提供一种资源指示和资源选择方法以及装置。
根据本申请实施例的一个方面，提供一种资源指示方法，包括：
第二终端设备生成资源信息，所述资源信息包括所述第二终端设备用于进行边链路发送的发送资源；以及
所述第二终端设备向第一终端设备发送所述资源信息。
根据本申请实施例的另一个方面，提供一种资源指示装置，配置于第二终端设备，所述装置包括：
生成单元，其生成资源信息，所述资源信息包括第二终端设备用于进行边链路发送的发送资源；以及
发送单元，其向第一终端设备发送所述资源信息。
根据本申请实施例的另一个方面，提供一种资源选择方法，包括：
第一终端设备接收第二终端设备或其他终端设备发送的资源信息，所述资源信息包括所述第二终端设备用于进行边链路发送的发送资源；以及
所述第一终端设备根据所述资源信息进行边链路资源选择或重选。
根据本申请实施例的另一个方面，提供一种资源选择装置，配置于第一终端设备，所述装置包括：
接收单元，其接收第二终端设备或其他终端设备发送的资源信息，所述资源信息包括所述第二终端设备用于进行边链路发送的发送资源；以及
选择单元，其根据所述资源信息进行边链路资源选择或重选。
本申请实施例的有益效果之一在于：第二终端设备向第一终端设备上报资源信息，该资源信息包括所述第二终端设备用于进行边链路发送的发送资源。由此，第一终端设备能够根据该资源信息进行资源选择，可以避免选择这些资源从而避免半双工问题的产生，提高V2X通信的可靠性。
参照后文的说明和附图，详细公开了本申请的特定实施方式，指明了本申请的原理可以被采用的方式。应该理解，本申请的实施方式在范围上并不因而受到限制。在所附权利要求的精神和条款的范围内，本申请的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本申请实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
图1是本申请实施例的通信系统的示意图；
图2是终端设备进行边链路资源选择的一示意图；
图3是V2X UE由于半双工特性引起的连续碰撞的一示意图；
图4是本申请实施例的资源指示方法的一示意图；
图5是本申请实施例的包括多个会话的场景的一示例图；
图6是本申请实施例的包括多个会话的场景的另一示例图；
图7是本申请实施例的包括多个会话的场景的另一示例图；
图8是本申请实施例的辅助信息中发送资源的一示例图；
图9是本申请实施例的辅助信息中发送资源的另一示例图；
图10是本申请实施例的资源选择方法的一示意图；
图11是本申请实施例的目的标识为第二终端设备时的资源排除的一示例图；
图12是本申请实施例的目的标识不为第二终端设备时的资源排除的一示例图；
图13是本申请实施例的资源指示装置的一示意图；
图14是本申请实施例的资源选择装置的一示意图；
图15是本申请实施例的网络设备的示意图；
图16是本申请实施例的终端设备的示意图。
具体实施方式
参照附图，通过下面的说明书，本申请的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本申请的特定实施方式，其表明了其中可以采用本申请的原则的部分实施方式，应了解的是，本申请不限于所描述的实施方式，相反，本申请包括落入所附权利要求的范围内的全部修改、变型以及等同物。
在本申请实施例中，术语“第一”、“第二”等用于对不同元素从称谓上进行区分，但并不表示这些元素的空间排列或时间顺序等，这些元素不应被这些术语所限制。术语“和/或”包括相关联列出的术语的一种或多个中的任何一个和所有组合。术语“包含”、“包括”、“具有”等是指所陈述的特征、元素、元件或组件的存在，但并不排除存在或添加一个或多个其他特征、元素、元件或组件。
在本申请实施例中，单数形式“一”、“该”等包括复数形式，应广义地理解为“一种”或“一类”而并不是限定为“一个”的含义；此外术语“所述”应理解为既包括单数形式也包括复数形式，除非上下文另外明确指出。此外术语“根据”应理解为“至少部分根据……”，术语“基于”应理解为“至少部分基于……”，除非上下文另外明确指出。
在本申请实施例中，术语“通信网络”或“无线通信网络”可以指符合如下任意通信标 准的网络，例如长期演进(LTE，Long Term Evolution)、增强的长期演进(LTE-A，LTE-Advanced)、宽带码分多址接入(WCDMA，Wideband Code Division Multiple Access)、高速报文接入(HSPA，High-Speed Packet Access)等等。
并且，通信系统中设备之间的通信可以根据任意阶段的通信协议进行，例如可以包括但不限于如下通信协议：1G(generation)、2G、2.5G、2.75G、3G、4G、4.5G以及5G、新无线(NR，New Radio)等等，和/或其他目前已知或未来将被开发的通信协议。
在本申请实施例中，术语“网络设备”例如是指通信系统中将终端设备接入通信网络并为该终端设备提供服务的设备。网络设备可以包括但不限于如下设备：基站(BS，Base Station)、接入点(AP、Access Point)、发送接收点(TRP，Transmission Reception Point)、广播发射机、移动管理实体(MME、Mobile Management Entity)、网关、服务器、无线网络控制器(RNC，Radio Network Controller)、基站控制器(BSC，Base Station Controller)等等。
其中，基站可以包括但不限于：节点B(NodeB或NB)、演进节点B(eNodeB或eNB)以及5G基站(gNB)，等等，此外还可包括远端无线头(RRH，Remote Radio Head)、远端无线单元(RRU，Remote Radio Unit)、中继(relay)或者低功率节点(例如femeto、pico等等)。并且术语“基站”可以包括它们的一些或所有功能，每个基站可以对特定的地理区域提供通信覆盖。术语“小区”可以指的是基站和/或其覆盖区域，这取决于使用该术语的上下文。
在本申请实施例中，术语“用户设备”(UE，User Equipment)或者“终端设备”(TE，Terminal Equipment或Terminal Device)例如是指通过网络设备接入通信网络并接收网络服务的设备。终端设备可以是固定的或移动的，并且也可以称为移动台(MS，Mobile Station)、终端、用户台(SS，Subscriber Station)、接入终端(AT，Access Terminal)、站，等等。
其中，终端设备可以包括但不限于如下设备：蜂窝电话(Cellular Phone)、个人数字助理(PDA，Personal Digital Assistant)、无线调制解调器、无线通信设备、手持设备、机器型通信设备、膝上型计算机、无绳电话、智能手机、智能手表、数字相机，等等。
再例如，在物联网(IoT，Internet of Things)等场景下，终端设备还可以是进行监控或测量的机器或装置，例如可以包括但不限于：机器类通信(MTC，Machine Type Communication)终端、车载通信终端、设备到设备(D2D，Device to Device)终端、机器到机器(M2M，Machine to Machine)终端，等等。
此外，术语“网络侧”或“网络设备侧”是指网络的一侧，可以是某一基站，也可以包括如上的一个或多个网络设备。术语“用户侧”或“终端侧”或“终端设备侧”是指用户或终端的一侧，可以是某一UE，也可以包括如上的一个或多个终端设备。本文在没有特别指出的情况下，“设备”可以指网络设备，也可以指终端设备。
以下通过示例对本申请实施例的场景进行说明，但本申请不限于此。
图1是本申请实施例的通信系统的示意图，示意性说明了以终端设备和网络设备为例的情况，如图1所示，通信系统100可以包括网络设备101和终端设备102、103。为简单起见，图1仅以两个终端设备和一个网络设备为例进行说明，但本申请实施例不限于此。
在本申请实施例中，网络设备101和终端设备102、103之间可以进行现有的业务或者未来可实施的业务发送。例如，这些业务可以包括但不限于：增强的移动宽带(eMBB，enhanced Mobile Broadband)、大规模机器类型通信(mMTC，massive Machine Type Communication)和高可靠低时延通信(URLLC，Ultra-Reliable and Low-Latency Communication)，等等。
值得注意的是，图1示出了两个终端设备102、103均处于网络设备101的覆盖范围内，但本申请不限于此。两个终端设备102、103可以均不在网络设备101的覆盖范围内，或者一个终端设备102在网络设备101的覆盖范围之内而另一个终端设备103在网络设备101的覆盖范围之外。
在本申请实施例中，两个终端设备102、103之间可以进行边链路发送。例如，两个终端设备102、103可以都在网络设备101的覆盖范围之内进行边链路发送以实现V2X通信，也可以都在网络设备101的覆盖范围之外进行边链路发送以实现V2X通信，还可以一个终端设备102在网络设备101的覆盖范围之内而另一个终端设备103在网络设备101的覆盖范围之外进行边链路发送以实现V2X通信。
在本申请实施例中，终端设备102和/或103可以自主选择边链路资源(即采用Mode2)，在这种情况下边链路发送可以与网络设备101无关，即网络设备101是可选的。当然，本申请实施例也可以将自主选择边链路资源(即采用Mode 2)和由网络设备分配边链路资源(即采用Mode 1)结合起来；本申请实施例不对此进行限制。
在LTE V2X中，终端设备能够通过感知检测+资源选择的过程来获得边链路发送资源，其中可以持续不断地进行感知(sensing)来获得资源池内资源的占用情况。例如，终端设备可以根据前一段时间内(称为感知窗)的资源占用情况来估计后一段时间内(称 为选择窗)的资源占用情况。
图2是终端设备进行边链路资源选择的一示意图，如图2所示，终端设备例如通过第(n-1000)至第(n-1)个子帧或时隙(即感知窗，sensing window)内的边链路控制信息(SCI，Sidelink Control Information)和对不同位置时频资源参考信号的检测，可以获得该感知窗的资源占用情况，进而可以估计出第(n+T1)至第(n+T2)个子帧或时隙(即选择窗，selection window)的资源占用情况。
例如，当有待发送的边链路数据时，终端设备的物理层从高层(例如介质访问控制(MAC，Media Access Control)层)获得资源选择的粒度R x,y；该粒度可以表示一个子帧内的一系列连续的子信道，每个子信道包括多于一个的连续物理资源块(PRB，Physical Resource Block)，PRB个数可以由资源池决定，资源池由网络设备(例如基站)配置或预配置；整个选择窗中的所有子帧内R x,y大小的资源(以下简称为R x,y候选资源)的集合被初始化定义为Set A。
终端设备可以根据在待发送数据到达之前在该感知窗内进行检测的结果，排除Set A中的部分候选资源。例如，在Rel-16的NR V2X中，以下的R x,y候选资源需要被排除：
——在时隙
Figure PCTCN2020107564-appb-000001
检测到SCI，从对应的SCI format1-A中获得了指示的预留周期P rsvp_RX和指示的对应数据的优先级prio RX；
——与检测到的SCI format 1-A对应的物理边链路控制信道(PSCCH，Physical Sidelink Control Channel)的解调参考信号(DMRS，De-modulation Reference Signal)或物理边链路共享信道(PSSCH，Physical Sidelink Shared Channel)的DMRS(取决于资源池的配置)的参考信号接收功率(RSRP，Reference Signal Receiving Power)的测量结果大于Th(prio RX)；其中，Th(prio RX)取值为对应的高层参数ThresRSRP_pi_pj，p j是高层指示的当前UE待发送数据的优先级，p i是检测到的其他UE的SCI中指示的优先级；
——对应的SCI format 1-A指示的资源以及其可能预留的下一个周期的资源(对于小于100ms的短周期，可能包括多个)，与当前发送的候选集合Set A中的资源
Figure PCTCN2020107564-appb-000002
存在重叠(overlap)，j＝0,1,…,C resel-1。这里资源是指当前选择窗内的set A的候选资源，以及周期业务其后续周期可能预留的周期位置上的资源。
如果经过了上面的资源排除之后，Set A中所剩余的R x,y候选资源个数不足初始总数 的20％，则将该RSRP门限值增大3dB，从初始的Set A中重新进行排除，直到Set A中剩余的R x,y候选资源个数大于或等于初始总数的20％为止。
将Set A中的R x,y候选资源按照S-RSSI由小到大的顺序放入Set B，直到Set B中的R x,y候选资源的个数大于或等于Set A中的R x,y候选资源初始总数的20％；其中，Set B是一个初始为空的集合，S-RSSI表示R x,y候选资源中所有子信道的信号强度的线性平均值。
然后，终端设备的物理层可以将Set B上报给MAC层，MAC层在Set B中进行随机选择，选择一个候选资源进行数据发送。此外，在指示的资源中选择一个解调和编码方案(MCS，Modulation and Coding Scheme)进行数据发送。
值得注意的是，以上仅对NR V2X中感知检测+资源选择的过程进行了示意性说明。关于上述过程的具体内容，还可以参考3GPP TS 36.213 V15.2.0中第14.1.1.6等处的内容。
由于V2X UE具有半双工特性，在相同时间内收发不能同时进行。由于UE在进行发送的时隙内不能进行感知(sensing)，会导致下述资源也需要从候选资源集合中排除：
——UE在感知窗内对时隙
Figure PCTCN2020107564-appb-000003
没有进行检测的资源；
——对所有sl-ResourceReservePeriodList对应的周期候选值，在时隙
Figure PCTCN2020107564-appb-000004
可能进行了周期预留的对应时隙的资源；即如果所有可能预留的时隙在选择窗内，则该时隙内的所有候选资源均需要排除。
此外，由于NR V2X中支持了非周期业务，在实际发送之前，需要对当前发送的资源进行抢占检测过程；并且，也需要对当前发送对应的SCI中预留的后续资源进行重评估。抢占检测和资源重评估也是通过上述步骤来识别预留或选择的资源是否与其它资源发生碰撞。
图3是V2X UE由于半双工特性引起的连续碰撞的一示意图，如图3所示，由于V2X UE的半双工特性，两个UE(UE A和UE B)之间如果同时向对方发送数据，会导致两个UE均无法正常接收。
特别是对于周期业务，两个UE相互发送的周期和偏移均相同的情况下，有可能会造成连续的收发碰撞导致连续丢包，使可靠性大大地降低，且在单播和组播场景下更加明显。现有Rel-16 V2X中没对这个问题进行优化，这也是Rel-17 V2X中的重点研究的问题。
在本申请实施例中，以V2X为例对边链路进行说明，但本申请不限于此，还可以 适用于V2X以外的边链路发送场景。在以下的说明中，在不引起混淆的情况下，术语“边链路”和“V2X”可以互换，术语“PSFCH”和“边链路反馈信道”可以互换，术语“PSCCH”和“边链路控制信道”或“边链路控制信息”可以互换，术语“PSSCH”和“边链路数据信道”或“边链路数据”也可以互换。
另外，发送(transmitting)或接收(receiving)PSCCH可以理解为发送或接收由PSCCH承载的边链路控制信息；发送或接收PSSCH可以理解为发送或接收由PSSCH承载的边链路数据；发送或接收PSFCH可以理解为发送或接收由PSFCH承载的边链路反馈信息。边链路发送(Sidelink transmission，也可称为边链路传输)可以理解为PSCCH/PSSCH发送或者边链路数据/信息发送。
第一方面的实施例
本申请实施例提供一种资源指示方法，从第二终端设备进行说明。其中第二终端设备可以向第一终端设备发送资源信息(也可称为资源集合，可以包含在辅助信息内)。资源信息可以指示边链路资源本身，也可以指示与边链路资源相关的信息，例如优先级、RSRP测量结果等。在以下的说明中，在不引起混淆的情况下，术语“资源信息”和“辅助信息”或“资源集合”可以互换。
图4是本申请实施例的资源指示方法的一示意图，如图4所示，该方法包括：
401，第二终端设备生成资源信息，所述资源信息包括所述第二终端设备用于进行边链路发送的发送资源；以及
402，所述第二终端设备向第一终端设备发送所述资源信息。
值得注意的是，以上附图4仅对本申请实施例进行了示意性说明，但本申请不限于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图4的记载。
在本申请实施例中，以单播业务为例，第一终端设备作为某一单播业务数据的发送方，可以向一个其他终端设备(例如第二终端设备或第三终端设备)发送边链路数据。第二终端设备作为另一单播业务数据的发送方，可以向一个其他终端设备(例如第一终端设备或第四终端设备)发送边链路数据。
以组播业务为例，第一终端设备作为某一组播业务数据的发送方，可以向属于同一组的多个终端设备发送边链路数据，并且第一终端设备可以属于多个组并向多个组发送 边链路数据。第二终端设备作为另一业务数据的发送方，可以向属于同一组的多个终端设备发送边链路数据，并且第二终端设备可以属于多个组并向多个组发送边链路数据。
以广播业务为例，第一终端设备作为某一业务数据的发送方，可以向多个终端设备发送边链路数据。第二终端设备作为另一业务数据的发送方，可以向多个终端设备发送边链路数据。
以下为简单起见，将不同于第一终端设备和第二终端设备的一个或多个其他终端设备统称为第三终端设备。
在本申请实施例中，考虑到要避免半双工问题导致的数据包丢失问题，第二终端设备(UE B)可以发送辅助信息给第一终端设备(UE A)，辅助信息中包括第二终端设备要进行发送的资源(本文称为发送资源)；第一终端设备则可以根据此辅助信息避免与第二终端设备在相同的时隙进行边链路发送，从而避免在第一终端设备和第二终端设备之间产生半双工问题。
在本申请实施例中，资源信息(辅助信息)中指示的发送资源是第二终端设备用于与第一终端设备和/或其它终端设备通信的资源，以单播业务和/或组播业务为例，其对应的边链路发送的发送方为第二终端设备，接收方为第一终端设备和/或其他终端设备。
值得注意的是，第二终端设备的辅助信息中除了指示其发送资源外，还可以指示其它资源，例如第二终端设备感知到的其它终端设备占用的资源(干扰资源)、第二终端设备用于边链路接收的资源(接收资源)，此外，辅助信息还可以指示信号强度、优先级等等。
发送资源可以通过显式方法被指示，例如通过介质访问控制(MAC)控制元素(CE，Control Element)所对应的逻辑信道标识(LCID)，或者边链路控制信息(SCI，例如为PSSCH的2nd stage SCI)的指示域，或者，无线资源控制(RRC)消息的信息元素(IE，Information Element)显式地指示某个资源集合为发送资源集合；也可以通过隐式方法被指示，例如可以将发送资源与干扰资源分为两个不同的集合。以下仅对辅助信息中的第二终端设备的发送资源进行说明，其他资源(例如干扰资源)或信息可以参考相关技术，在本文中省略说明。
在一些实施例中，所述发送资源为周期性资源，或者，所述发送资源为非周期性资源。例如，如果辅助信息中的资源是非周期性的，则可以指示其时频位置；对于时域位置，可以由系统帧号(SFN，System FrameNumber)和时隙索引偏移(slot index offset)标识。如果辅助信息中的资源是周期性的，还需要指示对应的周期，例如以时隙或者毫 秒为单位。
在一些实施例中，第一终端设备和/或第二终端设备可以是多会话的。例如，UE B的发送资源不一定都是用于和UE A通信的，还可以用于与其他终端设备通信。在UE A进行资源排除的过程中，可以辨别该资源的用途来进行不同的处理。
因此，对于辅助信息中的发送资源，可以标识与该发送资源关联的设备或设备所在的组。在本申请实施例中，资源所对应的边链路发送的目的标识为某一UE ID，则可以称该资源与该UE关联，和/或，资源所对应的边链路发送的目的标识为某一组ID，则可以称该资源与该组关联。
图5是本申请实施例的包括多个会话的场景的一示例图，图6是本申请实施例的包括多个会话的场景的另一示例图；图7是本申请实施例的包括多个会话的场景的另一示例图。如图5至7所示，对于一个UE可能同时有多个单播/组播会话。
如图5所示，UE B对应第二UE，UE A对应第一UE；在场景1中，UE A和UE B之间进行边链路发送。例如，UE A有向UE B发送的边链路数据(例如为单播业务)并确定了相应的资源，其对应的目的标识(destination ID)为UE B的标识；或者UE A有向UE A和UE B所在组发送的边链路数据(例如为组播业务)并确定了相应的资源，其对应的目的标识为UE A和UE B所在的组的标识。
例如，UE B有向UE A发送的边链路数据(例如为单播业务)并确定了相应的资源，其对应的目的标识为UE A的标识；或者UE B有向UE A和UE B所在组发送的边链路数据(例如为组播业务)并确定了相应的资源，其对应的目的标识为UE A和UE B所在的组的标识。
如图6所示，在场景2下，UE A和UE B之间进行边链路发送，同时，UE B还向UE C进行边链路发送。例如，UE A有向UE B发送的边链路数据并确定了相应的资源，其对应的目的标识为UE B的标识，或者UE A有向UE A和UE B所在组发送的边链路数据并确定了相应的资源，其对应的目的标识为UE A和UE B所在的组的标识。
例如，UE B有向UE A发送的某些边链路数据并确定了相应的资源，其对应的目的标识为UE A的标识，或者UE B有向UE A和UE B所在组发送的边链路数据并确定了相应的资源，其对应的目的标识为UE A和UE B所在的组的标识；UE B有向UE C发送的另一些边链路数据并确定了相应的资源，其对应的目的标识为UE C的标识，或者UE B有向UE C和UE B所在组发送的边链路数据并确定了相应的资源，其对应的目的标识为UE C和UE B所在的组的标识。
如图7所示，在场景3下，UE A和UE B之间进行边链路发送；同时，UE B还向UE C进行边链路发送，UE A还向UE D进行边链路发送。例如，UE A有向UE B发送的某些边链路数据并确定了相应的资源，其对应的目的标识为UE B的标识，或者UE A有向UE A和UE B所在组发送的边链路数据并确定了相应的资源，其对应的目的标识为UE A和UE B所在的组的标识；UE A有向UE D发送的另一些边链路数据并确定了相应的资源，其对应的目的标识为UE D的标识，或者UE A有向UE A和UE D所在组发送的边链路数据并确定了相应的资源，其对应的目的标识为UE D和UE A所在的组的标识。
例如，UE B有向UE A发送的某些边链路数据并确定了相应的资源，其对应的目的标识为UE A的标识，或者UE B有向UE A和UE B所在组发送的边链路数据并确定了相应的资源，其对应的目的标识为UE A和UE B所在的组的标识；UE B有向UE C发送的另一些边链路数据并确定了相应的资源，其对应的目的标识为UE C的标识，或者UE B有向UE C和UE B所在组发送的边链路数据并确定了相应的资源，其对应的目的标识为UE C和UE B所在的组的标识。
对于上述场景1至3，在UE A接收到UE B发送的辅助信息内所指示的UE B的发送资源后，UE A可以根据这些发送资源进行对应的资源排除过程(可能对应于资源选择/资源重选/资源重评估/抢占检测)。例如，UE A可以选择与UE B的发送资源在不同时隙的资源来进行边链路发送，避免在UE A和UE B之间产生半双工问题。
进一步地，针对UE B通知给UE A的辅助信息中包含的发送资源，如果对UE B的发送资源所对应的边链路发送的目的标识加以区分，可能会避免UE A进行过度的资源排除。
例如，在场景3中，如果不对UE B向UE A的发送所使用的资源和UE B向UE C的发送所使用的资源进行区分，UE A会在资源排除时将对应于UE B向UE A的发送所使用的资源和UE B向UE C的发送所使用的资源的所在时隙的所有资源均进行排除。但是，如果此时UE A的边链路发送的目的标识是UE D(或者UE A和UE D所在的组)，则对于UE B向UE C的发送所使用的资源而言，不会在UE A和UE B之间产生半双工问题；所以如果对这类资源所在的时隙内的所有候选资源均排除的话，会造成UE A的候选资源减少，不利于资源选择的随机性，可能会影响UE A的发送性能。
针对以上候选资源被过度排除的问题，本申请实施例的资源信息中的发送资源可以被分类，例如可以被分类为第一资源集合和第二资源集合。具体地，可以通过所对应的 边链路发送的目的标识被分类，但本申请不限于此。
在一些实施例中，资源信息中包括一个或多个发送资源；所述一个或多个发送资源中的至少一部分资源属于第一资源集合。
例如，第一资源集合中资源所对应边链路发送的目的标识为第一终端设备的标识，和/或，第一资源集合中资源所对应边链路发送的目的标识为第一终端设备和第二终端设备所在的组的标识。即，第一资源集合中的资源用于向第一终端设备发送边链路数据(单播和/或组播)，可以称为与第一终端设备相关联。
例如，通过介质访问控制(MAC)控制元素(CE，Control Element)所对应的逻辑信道标识(LCID)指示第一资源集合中资源所对应边链路发送的目的标识为第一终端设备的标识，或者，通过边链路控制信息(SCI，例如为PSSCH的2nd stage SCI)的指示域指示第一资源集合中资源所对应边链路发送的目的标识为第一终端设备的标识，或者，通过无线资源控制(RRC)消息的信息元素(IE，Information Element)指示第一资源集合中资源所对应边链路发送的目的标识为第一终端设备的标识。
再例如，通过MAC CE所对应的逻辑信道标识(LCID)指示第一资源集合中资源所对应边链路发送的目的标识为第一终端设备和第二终端设备所在的组的标识，或者，通过SCI的指示域指示第一资源集合中资源所对应边链路发送的目的标识为第一终端设备和第二终端设备所在的组的标识，或者，通过RRC消息的IE指示第一资源集合中资源所对应边链路发送的目的标识为第一终端设备和第二终端设备所在的组的标识。
在一些实施例中，第二终端设备使用第一资源集合中的资源向第一终端设备发送单播业务数据(例如为单播数据包)；或者，第二终端设备使用第一资源集合中的资源向第一终端设备和第二终端设备所在的组发送组播业务数据(例如为组播数据包)。
在一些实施例中，资源信息中包括一个或多个发送资源；所述一个或多个发送资源中的至少一部分资源属于第二资源集合。第二资源集合不同于第一资源集合，可以称为与第一终端设备不关联。
例如，第二资源集合的数目为一个，所述第二资源集合中的资源被第二终端设备用于向不同于第一终端设备的一个第三终端设备发送单播业务数据和/或组播业务数据；第二资源集合中的资源(可能是部分资源，也可能是全部资源)所对应边链路发送的目的标识为所述第三终端设备的标识，和/或，第二资源集合中资源(可能是部分资源，也可能是全部资源)所对应边链路发送的目的标识为所述第三终端设备和所述第二终端设备所在的组的标识。
例如，第二资源集合的数目为一个，所述第二资源集合中的资源被第二终端设备用于向不同于第一终端设备的多个第三终端设备发送单播业务数据和/或组播业务数据；第二资源集合中部分资源所对应边链路发送的目的标识为一个第三终端设备的标识，和/或，第二资源集合中部分资源所对应边链路发送的目的标识为一个第三终端设备和第二终端设备所在的组的标识。
例如，第二资源集合的数目为多个，一个第二资源集合中的资源被第二终端设备用于向不同于第一终端设备的一个第三终端设备发送单播业务数据和/或组播业务数据；一个第二资源集合中资源(可能是部分资源，也可能是全部资源)所对应边链路发送的目的标识为一个第三终端设备的标识，和/或，一个第二资源集合中资源(可能是部分资源，也可能是全部资源)所对应边链路发送的目的标识为一个第三终端设备和所述第二终端设备所在的组的标识。
再例如，第二资源集合中的资源(可能是部分资源，也可能是全部资源)被第二终端设备用于发送广播业务数据(例如为广播数据包)。
图8是本申请实施例的辅助信息中发送资源的一示例图，示出了一个第二资源集合的情况。如图8所示，UE B对应第二UE，UE A对应第一UE。UE B发送给UE A的辅助信息中包含的发送资源包括资源集合#1和资源集合#2。
资源集合#1对应于UE B用来发送给UE A或UE A和UE B所属的组的资源，此对应关系可以显式地也可以隐式地通知给UE A。例如，可以通过集合ID来指示该集合为第一资源集合，该集合包括的资源为UE B用来发送给UE A或UE A和UE B所属的组的资源；也可以通过目的UE ID来指示对应资源为UE B用来发送给UE A，或UE A和UE B所属的组的资源，此时该对应资源所属的集合为第一资源集合；还可以将集合ID和目的UE ID均进行指示。
对应的集合ID也可以通过MAC CE对应的LCID，或SCI中的对应域，或RRC消息中的IE进行指示，但本申请不限于此。此外，如果要显式地将资源集合与目的标识关联，则也可以用额外的比特在上述可能的信息中进行指示。需要说明的是，资源集合#1或资源集合#2可以为空集。
例如，第二资源集合中的一部分资源与一个第三终端设备(例如图8中的UE C)关联，第二资源集合中的另一部分资源与另一个第三终端设备(例如图8中的UE E)关联，所述第二资源集合中的再一部分资源用于广播业务。
图9是本申请实施例的辅助信息中发送资源的另一示例图，示出了多个第二资源集 合的情况。如图9所示，UE B对应第二UE，UE A对应第一UE。UE B发送给UE A的辅助信息中包含的发送资源包括资源集合#1，资源集合#2…资源集合#N。
资源集合#1对应于UE B用来发送给UE A或UE A和UE B所属的组的资源，资源集合#2…资源集合#N分别与其余目的UE或组对应，此对应关系可以显式地也可以隐式地通知给UE A；资源集合#2…资源集合#N也可以用于广播业务。
对应的集合ID也可以通过MAC CE对应的LCID，或SCI中的对应域，或RRC消息中的IE进行指示，但本申请不限于此。此外，如果要显式地将资源集合与目的标识关联，则也可以用额外的比特在上述可能的信息中进行指示。需要说明的是，资源集合#1或资源集合#2或…资源集合#N可以为空集。
在一些实施例中，对于包含在第一资源集合中的资源，第一终端设备会将该资源所在时隙的所有候选资源排除，因此，辅助信息中可以只指示该资源所在时隙的对应索引(index)，而不用指示具体的频域资源，由此可以减小辅助信息的开销。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
由上述实施例可知，第二终端设备向第一终端设备上报资源信息，该资源信息包括所述第二终端设备用于进行边链路发送的发送资源。由此，第一终端设备能够根据该资源信息进行资源选择，可以避免选择这些资源从而避免半双工问题的产生。
进一步地，所述资源信息中的发送资源被分类，能够避免第一终端设备对资源的过度排除，避免候选资源过少从而保证资源选择的随机性，并且能够减小资源选择的碰撞概率，保证第一终端设备的发送性能。
第二方面的实施例
本申请实施例提供一种资源选择方法，从第一终端设备进行说明。其中第一终端设备可以接收第二终端设备发送的资源信息(参见第一方面实施例的说明)，也可以接收其他终端设备转发的资源信息。与第一方面的实施例相同的内容不再赘述。
图10是本申请实施例的资源选择方法的一示意图，如图10所示，该方法包括：
1001，第一终端设备接收第二终端设备或其他终端设备发送的资源信息，所述资源信息包括所述第二终端设备用于进行边链路发送的发送资源；以及
1002，所述第一终端设备根据所述资源信息进行边链路资源选择或重选。
值得注意的是，以上附图10仅对本申请实施例进行了示意性说明，但本申请不限于此。例如可以适当地调整各个操作之间的执行顺序，此外还可以增加其他的一些操作或者减少其中的某些操作。本领域的技术人员可以根据上述内容进行适当地变型，而不仅限于上述附图10的记载。
在本申请实施例中，考虑到要避免半双工问题导致的数据包丢失问题，第二终端设备(UE B)可以发送辅助信息给第一终端设备(UE A)，也可以发送辅助信息给其他终端设备，由该其他终端设备转发给第一终端设备(UE A)。该辅助信息中包括第二终端设备要进行发送的资源，第一终端设备则可以根据此辅助信息避免与第二终端设备在相同的时隙进行发送，从而避免在第一终端设备和第二终端设备之间产生半双工问题。
在一些实施例中，第一终端设备在需要进行边链路发送的情况下，根据所述资源信息进行边链路资源选择或重选；或者，根据所述资源信息进行边链路资源重选，所述资源重选由第一终端设备进行资源重评估或抢占检测的结果触发。关于资源选择/资源重选/资源重评估/抢占检测的具体内容，可以参考相关技术，在此不再赘述。
在一些实施例中，第一终端设备还基于所述第一终端设备的边链路发送的目的标识，根据所述资源信息中的第二终端设备的发送资源，从候选资源集合中排除对应的候选资源以进行边链路资源选择或重选。
例如，第一终端设备的资源选择可以由物理层进行，边链路发送的目的标识可以由该第一终端设备的MAC层向该物理层提供。关于资源排除的具体内容，可以参考相关技术。
在一些实施例中，在第一终端设备的边链路发送的目的标识为第二终端设备的标识，或者为第一终端设备和第二终端设备所在的组的标识的情况下，第一终端设备排除所述资源信息中所有资源集合内的所有资源所在时隙内的全部候选资源。
图11是本申请实施例的目的标识为第二终端设备时的资源排除的一示例图。其中，发送资源如第一方面的实施例所述，包括资源集合#1，资源集合#2…资源集合#N。
如图11所示，如果第一UE(UE A)进行资源选择/重选/重评估和抢占检测过程所对应的边链路发送的目的标识是第二UE(UE B)，在第一UE进行资源排除时，对于所有的资源集合内的资源所在时隙(如图11所示，包括时隙1101、1102、1103、1104)内的全部候选资源均被排除。
在一些实施例中，第一终端设备在所述资源信息中第一资源集合的资源所在的时隙进行边链路接收；其中，第一资源集合中资源所对应边链路发送的目的标识为第一终端 设备的标识，或者，第一资源集合中资源所对应边链路发送的目的标识为第一终端设备和第二终端设备所在的组的标识。
例如，第一终端设备可以在如图11所示的时隙1101进行边链路接收，当然第一终端设备也可以在时隙1102、1103、1104进行边链路接收，或者在时隙1102、1103、1104向其他终端设备进行边链路发送。
在一些实施例中，在第一终端设备的边链路发送的目的标识不为第二终端设备的标识，或者不为第一终端设备和第二终端设备所在的组的标识的情况下，第一终端设备排除所述资源信息中第一资源集合内的所有资源所在时隙内的全部候选资源。此外，第一终端设备还可以排除与所述资源信息中除第一资源集合的其他资源集合的资源重叠的候选资源。
图12是本申请实施例的目的标识不为第二终端设备时的资源排除的一示例图。其中发送资源可以如第一方面的实施例所述，包括资源集合#1，资源集合#2…资源集合#N。
如图12所示，如果第一UE(UE A)进行资源选择/重选/重评估和抢占检测过程的目的标识不是第二UE(不是UE B，例如是UE D)，在第一UE进行资源排除时，对于第一资源集合内的所有资源所在时隙(如图12所示，包括时隙1201)内的全部候选资源均被排除。
如图12所示，对于其他资源集合的资源，并不排除所在时隙(如图12所示，包括时隙1202、1203、1204)内的所有候选资源，而只排除与这些资源重叠的候选资源。由此，能够避免资源的过度排除。
例如，在时隙1202内子信道C1上具有资源集合#2的资源R1，如果某个候选资源A的时域位置与时隙1202至少部分重叠并且频域位置至少与该资源R1部分重叠，则排除该候选资源A；如果某个候选资源B的时域位置与时隙1202至少部分重叠但频域位置与该资源R1不重叠，则不排除该候选资源B。
在一些实施例中，第一终端设备还根据所述资源信息中除第一资源集合的其他资源集合中的资源的参考信号接收功率(RSRP)的测量结果，确定是否排除与其他资源集合的资源重叠的候选资源。
例如，对于图12中所示的其他资源集合的资源，并不排除所在时隙(如图12所示，包括时隙1202、1203、1204)内的所有候选资源，而是根据这些资源所对应的RSRP的测量结果，确定是否排除与这些资源重叠的候选资源。具体的如何确定和如何排除， 可以参考相关技术。
在一些实施例中，第一终端设备在所述资源信息中第一资源集合的资源所在的时隙进行边链路接收；其中，第一资源集合中资源所对应边链路发送的目的标识为第一终端设备的标识，或者，第一资源集合中资源所对应边链路发送的目的标识为第一终端设备和第二终端设备所在的组的标识。
例如，第一终端设备可以在如图12所示的时隙1201进行边链路接收。
在一些实施例中，所述其他资源集合为一个第二资源集合，第二资源集合中的资源被第二终端设备用于向不同于第一终端设备的一个第三终端设备发送单播业务数据和/或组播业务数据；第二资源集合中资源(可能是部分资源，也可能是全部资源)所对应边链路发送的目的标识为所述第三终端设备的标识，和/或，第二资源集合中资源(可能是部分资源，也可能是全部资源)所对应边链路发送的目的标识为所述第三终端设备和第二终端设备所在的组的标识。
在一些实施例中，所述其他资源集合为一个第二资源集合，第二资源集合中的资源被第二终端设备用于向不同于第一终端设备的多个第三终端设备发送单播业务数据和/或组播业务数据；第二资源集合中部分资源所对应边链路发送的目的标识为一个第三终端设备的标识，和/或，第二资源集合中部分资源所对应边链路发送的目的标识为一个第三终端设备和第二终端设备所在的组的标识。
在一些实施例中，所述其他资源集合为多个第二资源集合，一个第二资源集合的资源被第二终端设备用于向不同于第一终端设备的一个第三终端设备发送单播业务数据和/或组播业务数据；一个第二资源集合中资源(可能是部分资源，也可能是全部资源)所对应边链路发送的目的标识为一个第三终端设备的标识，和/或，一个第二资源集合中资源(可能是部分资源，也可能是全部资源)所对应边链路发送的目的标识为一个第三终端设备和第二终端设备所在的组的标识。
在一些实施例中，第二资源集合中的资源(可能是部分资源，也可能是全部资源)被第二终端设备用于发送广播业务数据。
在一些实施例中，第一终端设备在进行资源选择/重选之后，可以使用这些资源进行边链路发送。关于边链路发送的具体内容可以参考相关技术。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
由上述实施例可知，第二终端设备向第一终端设备上报资源信息，该资源信息包括所述第二终端设备用于进行边链路发送的发送资源。由此，第一终端设备能够根据该资源信息进行资源选择，可以避免选择这些资源从而避免半双工问题的产生。
进一步地，所述资源信息中的发送资源被分类，能够避免第一终端设备对资源的过度排除，避免候选资源过少从而保证资源选择的随机性，并且能够减小资源选择的碰撞概率，保证第一终端设备的发送性能。
第三方面的实施例
本申请实施例提供一种资源指示装置。该装置例如可以是终端设备(例如前述的第二终端设备)，也可以是配置于终端设备的某个或某些部件或者组件，与第一方面的实施例相同的内容不再赘述。
图13是本申请实施例的资源指示装置的一示意图。如图13所示，资源指示装置1300包括：
生成单元1301，其生成资源信息，所述资源信息包括第二终端设备用于进行边链路发送的发送资源；以及
发送单元1302，其向第一终端设备发送所述资源信息。
在一些实施例中，所述发送资源为周期性资源，或者，所述发送资源为非周期性资源。
在一些实施例中，所述资源信息中包括一个或多个发送资源；所述一个或多个发送资源中的至少一部分资源属于第一资源集合。
在一些实施例中，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，和/或，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识。
在一些实施例中，通过介质访问控制控制元素所对应的逻辑信道标识指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，或者，通过边链路控制信息的指示域指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，或者，通过无线资源控制消息的信息元素指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识。
在一些实施例中，通过介质访问控制控制元素所对应的逻辑信道标识指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端 设备所在的组的标识，或者，通过边链路控制信息的指示域指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识，或者，通过无线资源控制消息的信息元素指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识。
在一些实施例中，发送单元1302还用于：使用所述第一资源集合中的资源向所述第一终端设备发送单播业务数据；或者，使用所述第一资源集合中的资源向所述第一终端设备和所述第二终端设备所在的组发送组播业务数据。
在一些实施例中，所述资源信息中包括一个或多个发送资源；所述一个或多个发送资源中的至少一部分资源属于第二资源集合。
在一些实施例中，所述第二资源集合的数目为一个，所述第二资源集合中的资源被所述第二终端设备用于向不同于所述第一终端设备的一个第三终端设备发送单播业务数据和/或组播业务数据；所述第二资源集合中资源所对应边链路发送的目的标识为所述第三终端设备的标识，和/或，所述第二资源集合中资源所对应边链路发送的目的标识为所述第三终端设备和所述第二终端设备所在的组的标识。
在一些实施例中，所述第二资源集合的数目为一个，所述第二资源集合中的资源被所述第二终端设备用于向不同于所述第一终端设备的多个第三终端设备发送单播业务数据和/或组播业务数据；所述第二资源集合中部分资源所对应边链路发送的目的标识为一个第三终端设备的标识，和/或，所述第二资源集合中部分资源所对应边链路发送的目的标识为一个第三终端设备和所述第二终端设备所在的组的标识。
在一些实施例中，所述第二资源集合的数目为多个，一个第二资源集合中的资源被所述第二终端设备用于向不同于所述第一终端设备的一个第三终端设备发送单播业务数据和/或组播业务数据；一个第二资源集合中资源所对应边链路发送的目的标识为一个第三终端设备的标识，和/或，一个第二资源集合中资源所对应边链路发送的目的标识为一个第三终端设备和所述第二终端设备所在的组的标识。
在一些实施例中，所述第二资源集合中的资源被所述第二终端设备用于发送广播业务数据。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
值得注意的是，以上仅对与本申请相关的各部件或模块进行了说明，但本申请不限 于此。资源指示装置1300还可以包括其他部件或者模块，关于这些部件或者模块的具体内容，可以参考相关技术。
此外，为了简单起见，图13中仅示例性示出了各个部件或模块之间的连接关系或信号走向，但是本领域技术人员应该清楚的是，可以采用总线连接等各种相关技术。上述各个部件或模块可以通过例如处理器、存储器、发射机、接收机等硬件设施来实现；本申请实施并不对此进行限制。
由上述实施例可知，第二终端设备向第一终端设备上报资源信息，该资源信息包括所述第二终端设备用于进行边链路发送的发送资源。由此，第一终端设备能够根据该资源信息进行资源选择，可以避免选择这些资源从而避免半双工问题的产生。
进一步地，所述资源信息中的发送资源通过所对应边链路发送的目的标识被分类，能够避免第一终端设备对资源的过度排除，避免候选资源过少从而保证资源选择的随机性，并且能够减小资源选择的碰撞概率，保证第一终端设备的发送性能。
第四方面的实施例
本申请实施例提供一种资源选择装置。该装置例如可以是终端设备(例如前述的第一终端设备)，也可以是配置于终端设备的某个或某些部件或者组件，与第二方面的实施例相同的内容不再赘述。
图14是本申请实施例的资源选择装置的一示意图。如图14所示，资源选择装置1400包括：
接收单元1401，其接收第二终端设备或其他终端设备发送的资源信息，所述资源信息包括所述第二终端设备用于进行边链路发送的发送资源；以及
选择单元1402，其根据所述资源信息进行边链路资源选择或重选。
在一些实施例中，选择单元1402在进行资源选择/重选之后，第一终端设备可以使用这些资源进行边链路发送。关于边链路发送的具体内容可以参考相关技术。
在一些实施例中，在需要进行边链路发送的情况下，根据所述资源信息进行所述边链路资源选择或重选；或者，根据所述资源信息进行所述边链路资源重选，所述资源重选由资源重评估或抢占检测的结果触发。
在一些实施例中，选择单元1402还基于第一终端设备的边链路发送的目的标识，根据所述资源信息中的所述第二终端设备的发送资源，从候选资源集合中排除对应的候选资源以进行所述边链路资源选择或重选。
在一些实施例中，在所述第一终端设备的边链路发送的目的标识为所述第二终端设备的标识，或者为所述第一终端设备和所述第二终端设备所在的组的标识的情况下，选择单元1402排除所述资源信息中所有资源集合内的所有资源所在时隙内的全部候选资源。
在一些实施例中，接收单元1401还用于：在所述资源信息中第一资源集合的资源所在的时隙进行边链路接收；其中，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，或者，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识。
在一些实施例中，在所述第一终端设备的边链路发送的目的标识不为所述第二终端设备的标识，或者不为所述第一终端设备和所述第二终端设备所在的组的标识的情况下，选择单元1402排除所述资源信息中第一资源集合内的所有资源所在时隙内的全部候选资源。
在一些实施例中，选择单元1402还排除与所述资源信息中除所述第一资源集合的其他资源集合中的资源重叠的候选资源。
在一些实施例中，选择单元1402还根据所述资源信息中除所述第一资源集合的其他资源集合中的资源的参考信号接收功率的测量结果，确定是否排除与所述其他资源集合的资源重叠的候选资源。
在一些实施例中，接收单元1401还用于：在所述资源信息中第一资源集合的资源所在的时隙进行边链路接收；其中，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，或者，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识。
以上各个实施例仅对本申请实施例进行了示例性说明，但本申请不限于此，还可以在以上各个实施例的基础上进行适当的变型。例如，可以单独使用上述各个实施例，也可以将以上各个实施例中的一种或多种结合起来。
值得注意的是，以上仅对与本申请相关的各部件或模块进行了说明，但本申请不限于此。资源选择装置1400还可以包括其他部件或者模块，关于这些部件或者模块的具体内容，可以参考相关技术。
此外，为了简单起见，图14中仅示例性示出了各个部件或模块之间的连接关系或信号走向，但是本领域技术人员应该清楚的是，可以采用总线连接等各种相关技术。上述各个部件或模块可以通过例如处理器、存储器、发射机、接收机等硬件设施来实现； 本申请实施并不对此进行限制。
由上述实施例可知，第二终端设备向第一终端设备上报资源信息，该资源信息包括所述第二终端设备用于进行边链路发送的发送资源。由此，第一终端设备能够根据该资源信息进行资源选择，可以避免选择这些资源从而避免半双工问题的产生。
进一步地，所述资源信息中的发送资源通过所对应边链路发送的目的标识被分类，能够避免第一终端设备对资源的过度排除，避免候选资源过少从而保证资源选择的随机性，并且能够减小资源选择的碰撞概率，保证第一终端设备的发送性能。
第五方面的实施例
本申请实施例还提供一种通信系统，可以参考图1，与第一方面至第四方面的实施例相同的内容不再赘述。
在一些实施例中，通信系统100至少可以包括：
第一终端设备，其接收资源信息，所述资源信息包括第二终端设备用于进行边链路发送的发送资源；以及根据所述资源信息进行边链路资源选择或重选；
第二终端设备，生成并发送所述资源信息。
本申请实施例还提供一种网络设备，例如可以是基站，但本申请不限于此，还可以是其他的网络设备。
图15是本申请实施例的网络设备的构成示意图。如图15所示，网络设备1500可以包括：处理器1510(例如中央处理器CPU)和存储器1520；存储器1520耦合到处理器1510。其中该存储器1520可存储各种数据；此外还存储信息处理的程序1530，并且在处理器1510的控制下执行该程序1530。
此外，如图15所示，网络设备1500还可以包括：收发机1540和天线1550等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，网络设备1500也并不是必须要包括图15中所示的所有部件；此外，网络设备1500还可以包括图15中没有示出的部件，可以参考现有技术。
本申请实施例还提供一种终端设备，但本申请不限于此，还可以是其他的设备。
图16是本申请实施例的终端设备的示意图。如图16所示，该终端设备1600可以包括处理器1610和存储器1620；存储器1620存储有数据和程序，并耦合到处理器1610。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
例如，处理器1610可以被配置为执行程序而实现如第一方面的实施例所述的资源指示方法。例如处理器1610可以被配置为进行如下的控制：生成资源信息，所述资源信息包括所述第二终端设备用于进行边链路发送的发送资源；以及向第一终端设备发送所述资源信息。
再例如，处理器1610可以被配置为执行程序而实现如第二方面的实施例所述的资源选择方法。例如处理器1610可以被配置为进行如下的控制：接收第二终端设备或其他终端设备发送的资源信息，所述资源信息包括所述第二终端设备用于进行边链路发送的发送资源；以及根据所述资源信息进行边链路资源选择或重选。
如图16所示，该终端设备1600还可以包括：通信模块1630、输入单元1640、显示器1650、电源1660。其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，终端设备1600也并不是必须要包括图16中所示的所有部件，上述部件并不是必需的；此外，终端设备1600还可以包括图16中没有示出的部件，可以参考现有技术。
本申请实施例还提供一种计算机程序，其中当在终端设备中执行所述程序时，所述程序使得所述终端设备执行第一方面的实施例所述的资源指示方法。
本申请实施例还提供一种存储有计算机程序的存储介质，其中所述计算机程序使得终端设备执行第一方面的实施例所述的资源指示方法。
本申请实施例还提供一种计算机程序，其中当在终端设备中执行所述程序时，所述程序使得所述终端设备执行第二方面的实施例所述的资源选择方法。
本申请实施例还提供一种存储有计算机程序的存储介质，其中所述计算机程序使得终端设备执行第二方面的实施例所述的资源选择方法。
本申请以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本申请涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本申请还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本申请实施例描述的方法/装置可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图中所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可插入移动终端的存储卡中。例如，若设备(如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对附图中描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件或者其任意适当组合。针对附图描述的功能方框中的一个或多个和/或功能方框的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本申请进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本申请保护范围的限制。本领域技术人员可以根据本申请的精神和原理对本申请做出各种变型和修改，这些变型和修改也在本申请的范围内。
关于包括以上实施例的实施方式，还公开下述的附记：
附记1、一种资源指示方法，包括：
第二终端设备生成资源信息，所述资源信息包括所述第二终端设备用于进行边链路发送的发送资源；以及
所述第二终端设备向第一终端设备发送所述资源信息。
附记2、根据附记1所述的方法，其中，所述发送资源为周期性资源，或者，所述发送资源为非周期性资源。
附记3、根据附记1或2所述的方法，其中，所述资源信息中包括一个或多个发送资源；所述一个或多个发送资源中的至少一部分资源属于第一资源集合。
附记4、根据附记3所述的方法，其中，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，和/或，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识。
附记5、根据附记4所述的方法，其中，通过介质访问控制(MAC)控制元素(CE)所对应的逻辑信道标识指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，或者，通过边链路控制信息(SCI)的指示域指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，或者，通过无线资源控制(RRC)消息的信息元素(IE)指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识。
附记6、根据附记4所述的方法，其中，，通过介质访问控制(MAC)控制元素(CE)所对应的逻辑信道标识指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识，或者，通过边链路控制信息(SCI)的指示域指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识，或者，通过无线资源控制(RRC)消息的信息元素(IE)指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识。
附记7、根据附记3至6任一项所述的方法，其中，所述方法还包括：
所述第二终端设备使用所述第一资源集合中的资源向所述第一终端设备发送单播业务数据；或者，所述第二终端设备使用所述第一资源集合中的资源向所述第一终端设备和所述第二终端设备所在的组发送组播业务数据。
附记8、根据附记1或2所述的方法，其中，所述资源信息中包括一个或多个发送资源；所述一个或多个发送资源中的至少一部分资源属于第二资源集合。
附记9、根据附记8所述的方法，其中，所述第二资源集合的数目为一个，所述第二资源集合中的资源被所述第二终端设备用于向不同于所述第一终端设备的一个第三终端设备发送单播业务数据和/或组播业务数据。
附记10、根据附记9所述的方法，其中，所述第二资源集合中的资源所对应边链路发送的目的标识为所述第三终端设备的标识，和/或，所述第二资源集合中的资源所对应边链路发送的目的标识为所述第三终端设备和所述第二终端设备所在的组的标识。
附记11、根据附记8所述的方法，其中，所述第二资源集合的数目为一个，所述第二资源集合中的资源被所述第二终端设备用于向不同于所述第一终端设备的多个第三终端设备发送单播业务数据和/或组播业务数据。
附记12、根据附记11所述的方法，其中，所述第二资源集合中的部分资源所对应边链路发送的目的标识为一个第三终端设备的标识，和/或，所述第二资源集合中的部分 资源所对应边链路发送的目的标识为一个第三终端设备和所述第二终端设备所在的组的标识。
附记13、根据附记8所述的方法，其中，所述第二资源集合的数目为多个，一个第二资源集合中的资源被所述第二终端设备用于向不同于所述第一终端设备的一个第三终端设备发送单播业务数据和/或组播业务数据。
附记14、根据附记13所述的方法，其中，一个第二资源集合中的资源所对应边链路发送的目的标识为一个第三终端设备的标识，和/或，一个第二资源集合中的资源所对应边链路发送的目的标识为一个第三终端设备和所述第二终端设备所在的组的标识。
附记15、根据附记8至14任一项所述的方法，其中，所述第二资源集合中的资源被所述第二终端设备用于发送广播业务数据。
附记16、一种资源选择方法，包括：
第一终端设备接收第二终端设备或其他终端设备发送的资源信息，所述资源信息包括所述第二终端设备用于进行边链路发送的发送资源；以及
所述第一终端设备根据所述资源信息进行边链路资源选择或重选。
附记17、根据附记16所述的方法，其中，所述第一终端设备在需要进行边链路发送的情况下，根据所述资源信息进行所述边链路资源选择或重选；
或者，根据所述资源信息进行所述边链路资源重选，所述资源重选由所述第一终端设备进行资源重评估或抢占检测的结果触发。
附记18、根据附记16或17所述的方法，其中，所述第一终端设备还基于所述第一终端设备的边链路发送的目的标识，根据所述资源信息中的所述第二终端设备的发送资源，从候选资源集合中排除对应的候选资源以进行所述边链路资源选择或重选。
附记19、根据附记18所述的方法，其中，在所述第一终端设备的边链路发送的目的标识为所述第二终端设备的标识，或者为所述第一终端设备和所述第二终端设备所在的组的标识的情况下，所述第一终端设备排除所述资源信息中所有资源集合内的所有资源所在时隙内的全部候选资源。
附记20、根据附记19所述的方法，其中，所述方法还包括：
所述第一终端设备在所述资源信息中第一资源集合的资源所在的时隙进行边链路接收；其中，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，或者，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识。
附记21、根据附记18所述的方法，其中，在所述第一终端设备的边链路发送的目的标识不为所述第二终端设备的标识，或者不为所述第一终端设备和所述第二终端设备所在的组的标识的情况下，所述第一终端设备排除所述资源信息中第一资源集合内的所有资源所在时隙内的全部候选资源。
附记22、根据附记21所述的方法，其中，所述第一终端设备还排除与所述资源信息中除所述第一资源集合的其他资源集合中的资源重叠的候选资源。
附记23、根据附记21所述的方法，其中，所述第一终端设备还根据所述资源信息中除所述第一资源集合的其他资源集合中的资源的参考信号接收功率(RSRP)的测量结果，确定是否排除与所述其他资源集合的资源重叠的候选资源。
附记24、根据附记21至23任一项所述的方法，其中，所述方法还包括：
所述第一终端设备在所述资源信息中第一资源集合的资源所在的时隙进行边链路接收；其中，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，或者，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识。
附记25、根据附记22或23所述的方法，其中，所述其他资源集合为一个第二资源集合，所述第二资源集合中的资源被所述第二终端设备用于向不同于所述第一终端设备的一个第三终端设备发送单播业务数据和/或组播业务数据。
附记26、根据附记25所述的方法，其中，所述第二资源集合中的资源所对应边链路发送的目的标识为所述第三终端设备的标识，和/或，所述第二资源集合中的资源所对应边链路发送的目的标识为所述第三终端设备和所述第二终端设备所在的组的标识。
附记27、根据附记22或23所述的方法，其中，所述其他资源集合为一个第二资源集合，所述第二资源集合中的资源被所述第二终端设备用于向不同于所述第一终端设备的多个第三终端设备发送单播业务数据和/或组播业务数据。
附记28、根据附记27所述的方法，其中，所述第二资源集合中的部分资源所对应边链路发送的目的标识为一个第三终端设备的标识，和/或，所述第二资源集合中的部分资源所对应边链路发送的目的标识为一个第三终端设备和所述第二终端设备所在的组的标识。
附记29、根据附记22或23所述的方法，其中，所述其他资源集合为多个第二资源集合，一个第二资源集合的资源被所述第二终端设备用于向不同于所述第一终端设备的一个第三终端设备发送单播业务数据和/或组播业务数据。
附记30、根据附记29所述的方法，其中，一个第二资源集合中的资源所对应边链路发送的目的标识为一个第三终端设备的标识，和/或，一个第二资源集合中的资源所对应边链路发送的目的标识为一个第三终端设备和所述第二终端设备所在的组的标识。
附记31、根据附记25至30任一项所述的方法，其中，所述第二资源集合中的资源被所述第二终端设备用于发送广播业务数据。
附记32、一种终端设备，包括存储器和处理器，所述存储器存储有计算机程序，所述处理器被配置为执行所述计算机程序而实现如附记1至15任一项所述的资源指示方法，或者被配置为执行所述计算机程序而实现如附记16至31任一项所述的资源选择方法。

Claims (20)

  1. 一种资源指示装置，配置于第二终端设备，所述装置包括：
    生成单元，其生成资源信息，所述资源信息包括第二终端设备用于进行边链路发送的发送资源；以及
    发送单元，其向第一终端设备发送所述资源信息。
  2. 根据权利要求1所述的装置，其中，所述发送资源为周期性资源，或者，所述发送资源为非周期性资源。
  3. 根据权利要求1所述的装置，其中，所述资源信息中包括一个或多个发送资源；所述一个或多个发送资源中的至少一部分资源属于第一资源集合；
    其中，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，和/或，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识。
  4. 根据权利要求3所述的装置，其中，通过介质访问控制控制元素所对应的逻辑信道标识指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，或者，通过边链路控制信息的指示域指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，或者，通过无线资源控制消息的信息元素指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识。
  5. 根据权利要求3所述的装置，其中，通过介质访问控制控制元素所对应的逻辑信道标识指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识，或者，通过边链路控制信息的指示域指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识，或者，通过无线资源控制消息的信息元素指示所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识。
  6. 根据权利要求3所述的装置，其中，所述发送单元还用于：
    使用所述第一资源集合中的资源向所述第一终端设备发送单播业务数据；或者，使用所述第一资源集合中的资源向所述第一终端设备和所述第二终端设备所在的组发送组播业务数据。
  7. 根据权利要求1所述的装置，其中，所述资源信息中包括一个或多个发送资源； 所述一个或多个发送资源中的至少一部分资源属于第二资源集合。
  8. 根据权利要求7所述的装置，其中，所述第二资源集合的数目为一个，所述第二资源集合中的资源被所述第二终端设备用于向不同于所述第一终端设备的一个第三终端设备发送单播业务数据和/或组播业务数据；或者被用于发送广播业务数据；
    所述第二资源集合中的资源所对应边链路发送的目的标识为所述第三终端设备的标识，和/或，所述第二资源集合中的资源所对应边链路发送的目的标识为所述第三终端设备和所述第二终端设备所在的组的标识，和/或，所述第二资源集合中的资源所对应边链路发送的目的标识为广播标识。
  9. 根据权利要求7所述的装置，其中，所述第二资源集合的数目为一个，所述第二资源集合中的资源被所述第二终端设备用于向不同于所述第一终端设备的多个第三终端设备发送单播业务数据和/或组播业务数据；或者被用于发送广播业务数据；
    所述第二资源集合中的部分资源所对应边链路发送的目的标识为一个第三终端设备的标识，和/或，所述第二资源集合中的部分资源所对应边链路发送的目的标识为一个第三终端设备和所述第二终端设备所在的组的标识，和/或，所述第二资源集合中的部分资源所对应边链路发送的目的标识为广播标识。
  10. 根据权利要求7所述的装置，其中，所述第二资源集合的数目为多个，一个第二资源集合中的资源被所述第二终端设备用于向不同于所述第一终端设备的一个第三终端设备发送单播业务数据和/或组播业务数据；或者被用于发送广播业务数据；
    一个第二资源集合中的资源所对应边链路发送的目的标识为一个第三终端设备的标识，和/或，一个第二资源集合中的资源所对应边链路发送的目的标识为一个第三终端设备和所述第二终端设备所在的组的标识，和/或，一个第二资源集合中的资源所对应边链路发送的目的标识为广播标识。
  11. 一种资源选择装置，配置于第一终端设备，所述装置包括：
    接收单元，其接收第二终端设备或其他终端设备发送的资源信息，所述资源信息包括所述第二终端设备用于进行边链路发送的发送资源；以及
    选择单元，其根据所述资源信息进行边链路资源选择或重选。
  12. 根据权利要求11所述的装置，其中，在需要进行边链路发送的情况下，根据所述资源信息进行所述边链路资源选择或重选；
    或者，根据所述资源信息进行所述边链路资源重选，所述边链路资源重选由资源重评估或抢占检测的结果触发。
  13. 根据权利要求11所述的装置，其中，所述选择单元还基于第一终端设备的边链路发送的目的标识，根据所述资源信息中的所述第二终端设备的发送资源，从候选资源集合中排除对应的候选资源以进行所述边链路资源选择或重选。
  14. 根据权利要求13所述的装置，其中，在所述第一终端设备的边链路发送的目的标识为所述第二终端设备的标识，或者为所述第一终端设备和所述第二终端设备所在的组的标识的情况下，所述选择单元排除所述资源信息中所有资源集合内的所有资源所在时隙内的全部候选资源。
  15. 根据权利要求14所述的装置，其中，所述接收单元还用于：
    在所述资源信息中第一资源集合的资源所在的时隙进行边链路接收；其中，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，或者，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识。
  16. 根据权利要求13所述的装置，其中，在所述第一终端设备的边链路发送的目的标识不为所述第二终端设备的标识，或者不为所述第一终端设备和所述第二终端设备所在的组的标识的情况下，所述选择单元排除所述资源信息中第一资源集合内的所有资源所在时隙内的全部候选资源。
  17. 根据权利要求16所述的装置，其中，所述选择单元还排除与所述资源信息中除所述第一资源集合的其他资源集合中的资源重叠的候选资源。
  18. 根据权利要求16所述的装置，其中，所述选择单元还根据所述资源信息中除所述第一资源集合的其他资源集合中的资源的参考信号接收功率的测量结果，确定是否排除与所述其他资源集合的资源重叠的候选资源。
  19. 根据权利要求16所述的装置，其中，所述接收单元还用于：
    在所述资源信息中第一资源集合的资源所在的时隙进行边链路接收；其中，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备的标识，或者，所述第一资源集合中的资源所对应边链路发送的目的标识为所述第一终端设备和所述第二终端设备所在的组的标识。
  20. 一种通信系统，包括：
    第一终端设备，其接收资源信息，所述资源信息包括第二终端设备用于进行边链路发送的发送资源；以及根据所述资源信息进行边链路资源选择或重选；
    第二终端设备，生成并发送所述资源信息。
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