WO2022068851A1 - 辅链路资源处理方法及装置 - Google Patents

辅链路资源处理方法及装置 Download PDF

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Publication number
WO2022068851A1
WO2022068851A1 PCT/CN2021/121577 CN2021121577W WO2022068851A1 WO 2022068851 A1 WO2022068851 A1 WO 2022068851A1 CN 2021121577 W CN2021121577 W CN 2021121577W WO 2022068851 A1 WO2022068851 A1 WO 2022068851A1
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terminal device
indication field
value
terminal
identifier
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PCT/CN2021/121577
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English (en)
French (fr)
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曲鑫
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北京紫光展锐通信技术有限公司
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Publication of WO2022068851A1 publication Critical patent/WO2022068851A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08User group management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30Services specially adapted for particular environments, situations or purposes
    • H04W4/40Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation

Definitions

  • the embodiments of the present application relate to communication technologies, and in particular, to a method and apparatus for processing secondary link resources.
  • V2X Vehicle to X
  • NR V2X enables the Internet of Vehicles key technical means.
  • a device can acquire transmission resources through a perception-based selection method.
  • the device receives the physical sidelink control channel (PSCCH) sent by other V2X devices within the resource perception window.
  • PSCCH physical sidelink control channel
  • the PSCCH determines the reserved resources of other V2X devices, then excludes the reserved resources from the resource selection window, and selects resources for secondary link communication from the remaining available resources.
  • the device may encounter the half-duplex problem and the hidden node problem, which may lead to resource collision and reduce the reliability of transmission.
  • Embodiments of the present application provide a method and apparatus for processing secondary link resources, so as to overcome the problem of reduced transmission reliability.
  • an embodiment of the present application provides a method for processing secondary link resources, including:
  • the second terminal device receives the indication information sent by the first terminal device, wherein the indication information is used to indicate the first resource;
  • the second terminal device determines, according to the first resource, a secondary link transmission resource of the second terminal device, where the secondary link transmission resource is used for data transmission between the second terminal device and other terminal devices.
  • the indication information includes at least one of the following information: secondary link control information SCI, and high-level instructions.
  • the SCI includes a first indication field, where the first indication field is used to indicate information of the other terminal device.
  • the second terminal device and the first terminal device perform unicast communication, and the other terminal devices include the first terminal device;
  • the value of the first indication field is the M high-order bits of the source layer 2 identifier of the first terminal device; or,
  • the value of the first indication field is the M high-order bits of the destination layer 2 identifier of the first terminal device; or,
  • the value of the first indication field is the M lower bits of the source layer 2 identifier of the first terminal device; or,
  • the value of the first indication field is the M lower bits of the target layer 2 identifier of the first terminal device
  • the M is an integer greater than or equal to 1.
  • the second terminal device and a third terminal device perform unicast communication
  • the third terminal device is a terminal device different from the first terminal device
  • the other terminal devices include all the third terminal equipment
  • the value of the first indication field is the M high-order bits of the source layer 2 identifier of the third terminal device; or,
  • the value of the first indication field is the M high-order bits of the destination layer 2 identifier of the third terminal device; or,
  • the value of the first indication field is the M lower bits of the source layer 2 identifier of the third terminal device; or,
  • the value of the first indication field is the M lower bits of the target layer 2 identifier of the third terminal device
  • the M is an integer greater than or equal to 1.
  • the second terminal device performs multicast communication with a first terminal device group corresponding to the first terminal device, and the other terminal devices include terminal devices in the first terminal device group ;
  • the value of the first indication field is the M high-order bits of the group layer 2 identifier of the first terminal device group; or,
  • the value of the first indication field is the M lower bits of the group layer 2 identifier of the first terminal device group;
  • the M is an integer greater than or equal to 1.
  • the second terminal device performs multicast communication with a second terminal device group corresponding to the third terminal device, and the other terminal devices include terminal devices in the second terminal device group ;
  • the value of the first indication field is the M high-order bits of the group layer 2 identifier of the second terminal device group; or,
  • the value of the first indication field is the M lower bits of the group layer 2 identifier of the second terminal device group;
  • the M is an integer greater than or equal to 1.
  • the first indication field is used to indicate that the other terminal device is not specified
  • the value of the first indication field is a first preset value of M bits, where M is an integer greater than or equal to 1.
  • the high-layer signaling includes a second indication field, where the second indication field is used to indicate information of the other terminal equipment.
  • the second terminal device and the first terminal device perform unicast communication, and the other terminal devices include the first terminal device;
  • the value of the second indication field is the source layer two identifier of the first terminal device; or,
  • the value of the second indication field is the destination layer 2 identifier of the first terminal device.
  • the second terminal device and a third terminal device perform unicast communication
  • the third terminal device is a terminal device different from the first terminal device
  • the other terminal devices include all the third terminal equipment
  • the value of the second indication field is the source layer 2 identifier of the third terminal device.
  • the value of the second indication field is the destination layer 2 identifier of the third terminal device.
  • the second terminal device performs multicast communication with a third terminal device group corresponding to the first terminal device, and the other terminal devices include terminal devices in the third terminal device group ;
  • the value of the second indication field is the group layer 2 identifier of the third terminal device group.
  • the second terminal device performs multicast communication with a fourth terminal device group corresponding to the third terminal device, and the other terminal devices include terminal devices in the fourth terminal device group ;
  • the value of the second indication field is the group layer 2 identifier of the fourth terminal device group.
  • the second indication field is used to indicate that the other terminal device is not specified
  • the value of the second indication field is a second preset value of R bits, where R is the number of bits of the second indication field.
  • the value of the indication field is a state value of X bits, where X is an integer greater than or equal to 1, wherein the state value includes at least any one of the following: the first state value, second state value, third state value;
  • the first state value is used to indicate that the other terminal device includes the first terminal device or a terminal device in a terminal device group corresponding to the first terminal device;
  • the second state value is used to indicate that the other terminal device includes the third terminal device or a terminal device in a terminal device group corresponding to the third terminal device;
  • the third state value is used to indicate that there is no designated other terminal device.
  • the indication information is secondary link control information of two stages, and the indication field is included in the second stage information of the secondary link control information.
  • the indication information is single-phase secondary link control information, and the indication field is included in the secondary link control information.
  • the indication information further includes a resource location indication field, where the resource location indication field is used to indicate a time-frequency domain location where the first resource is located.
  • the indication information further includes a source layer 1 identifier of the first terminal device and a destination layer 1 identifier of the second terminal device.
  • the first resource is a secondary link transmission resource that allows the second terminal device to perform data transmission
  • the first resource is a secondary link transmission resource for which the second terminal device is not allowed to perform data transmission.
  • an apparatus for processing secondary link resources including:
  • a receiving module configured for the second terminal device to receive the indication information sent by the first terminal device, wherein the indication information is used to indicate the first resource
  • a determining module configured for the second terminal device to determine the secondary link transmission resource of the second terminal device according to the first resource, wherein the secondary link transmission resource is used for the second terminal device and other terminals device for data transmission.
  • the indication information includes at least one of the following information: secondary link control information SCI, and high-level instructions.
  • the SCI includes a first indication field, where the first indication field is used to indicate information of the other terminal device.
  • the second terminal device and the first terminal device perform unicast communication, and the other terminal devices include the first terminal device;
  • the value of the first indication field is the M high-order bits of the source layer 2 identifier of the first terminal device; or,
  • the value of the first indication field is the M high-order bits of the destination layer 2 identifier of the first terminal device; or,
  • the value of the first indication field is the M lower bits of the source layer 2 identifier of the first terminal device; or,
  • the value of the first indication field is the M lower bits of the target layer 2 identifier of the first terminal device
  • the M is an integer greater than or equal to 1.
  • the second terminal device and a third terminal device perform unicast communication
  • the third terminal device is a terminal device different from the first terminal device
  • the other terminal devices include all the third terminal equipment
  • the value of the first indication field is the M high-order bits of the source layer 2 identifier of the third terminal device; or,
  • the value of the first indication field is the M high-order bits of the destination layer 2 identifier of the third terminal device; or,
  • the value of the first indication field is the M lower bits of the source layer 2 identifier of the third terminal device; or,
  • the value of the first indication field is the M lower bits of the target layer 2 identifier of the third terminal device
  • the M is an integer greater than or equal to 1.
  • the second terminal device performs multicast communication with a first terminal device group corresponding to the first terminal device, and the other terminal devices include terminal devices in the first terminal device group ;
  • the value of the first indication field is the M high-order bits of the group layer 2 identifier of the first terminal device group; or,
  • the value of the first indication field is the M lower bits of the group layer 2 identifier of the first terminal device group;
  • the M is an integer greater than or equal to 1.
  • the second terminal device performs multicast communication with a second terminal device group corresponding to the third terminal device, and the other terminal devices include terminal devices in the second terminal device group ;
  • the value of the first indication field is the M high-order bits of the group layer 2 identifier of the second terminal device group; or,
  • the value of the first indication field is the M lower bits of the group layer 2 identifier of the second terminal device group;
  • the M is an integer greater than or equal to 1.
  • the first indication field is used to indicate that the other terminal device is not specified
  • the value of the first indication field is a first preset value of M bits, where M is an integer greater than or equal to 1.
  • the high-layer signaling includes a second indication field, where the second indication field is used to indicate information of the other terminal equipment.
  • the second terminal device and the first terminal device perform unicast communication, and the other terminal devices include the first terminal device;
  • the value of the second indication field is the source layer two identifier of the first terminal device; or,
  • the value of the second indication field is the destination layer 2 identifier of the first terminal device.
  • the second terminal device and a third terminal device perform unicast communication
  • the third terminal device is a terminal device different from the first terminal device
  • the other terminal devices include all the third terminal equipment
  • the value of the second indication field is the source layer 2 identifier of the third terminal device.
  • the value of the second indication field is the destination layer 2 identifier of the third terminal device.
  • the second terminal device performs multicast communication with a third terminal device group corresponding to the first terminal device, and the other terminal devices include terminal devices in the third terminal device group ;
  • the value of the second indication field is the group layer 2 identifier of the third terminal device group.
  • the second terminal device performs multicast communication with a fourth terminal device group corresponding to the third terminal device, and the other terminal devices include terminal devices in the fourth terminal device group ;
  • the value of the second indication field is the group layer 2 identifier of the fourth terminal device group.
  • the second indication field is used to indicate that the other terminal device is not specified
  • the value of the second indication field is a second preset value of R bits, where R is the number of bits of the second indication field.
  • the value of the indication field is a state value of X bits, where X is an integer greater than or equal to 1, wherein the state value includes at least any one of the following: the first state value, second state value, third state value;
  • the first state value is used to indicate that the other terminal device includes the first terminal device or a terminal device in a terminal device group corresponding to the first terminal device;
  • the second state value is used to indicate that the other terminal device includes the third terminal device or a terminal device in a terminal device group corresponding to the third terminal device;
  • the third state value is used to indicate that there is no designated other terminal device.
  • the indication information is secondary link control information of two stages, and the indication field is included in the second stage information of the secondary link control information.
  • the indication information is single-phase secondary link control information, and the indication field is included in the secondary link control information.
  • the indication information further includes a resource location indication field, where the resource location indication field is used to indicate a time-frequency domain location where the first resource is located.
  • the indication information further includes a source layer 1 identifier of the first terminal device and a destination layer 1 identifier of the second terminal device.
  • the first resource is a secondary link transmission resource that allows the second terminal device to perform data transmission
  • the first resource is a secondary link transmission resource for which the second terminal device is not allowed to perform data transmission.
  • an embodiment of the present application provides a secondary link resource processing device, including:
  • a processor configured to execute the program stored in the memory, and when the program is executed, the processor is configured to execute the method described in any one of the above first aspect and various possible designs of the first aspect.
  • embodiments of the present application provide a computer-readable storage medium, including instructions, which, when executed on a computer, cause the computer to execute the first aspect and any of the various possible designs of the first aspect. method.
  • Embodiments of the present application provide a method and apparatus for processing secondary link resources.
  • the method includes: a second terminal device receives indication information sent by a first terminal device, where the indication information is used to indicate the first resource.
  • the second terminal device determines the secondary link transmission resource of the second terminal device according to the first resource, where the secondary link transmission resource is used for data transmission between the second terminal device and other terminal devices.
  • the second terminal device determines the secondary link transmission resource for data transmission with other terminal devices according to the first resource indicated by the indication information, so that the hidden node problem and the half-duplex problem can be effectively avoided. to avoid resource collisions and improve transmission reliability.
  • FIG. 1 is a schematic diagram of a V2X communication scenario provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of another V2X communication scenario provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a hidden node provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of resource selection for collaboration between users according to an embodiment of the present application.
  • FIG. 5 is a flowchart of a method for processing secondary link resources provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of implementation when a second terminal device and a first terminal device perform unicast communication according to an embodiment of the present application
  • FIG. 7 is a schematic diagram of implementation when a second terminal device and a terminal device group of a first terminal device perform multicast communication according to an embodiment of the present application;
  • FIG. 8 is a schematic diagram of implementation when a second terminal device and a third terminal device perform unicast communication according to an embodiment of the present application
  • FIG. 9 is a schematic diagram of implementation when a second terminal device and a terminal device group of a third terminal device perform multicast communication according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of implementing broadcast communication by a second terminal device according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of an apparatus for processing secondary link resources provided by an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a hardware structure of a secondary link resource processing device according to an embodiment of the present application.
  • V2X Vehicle to X
  • NR V2X enables the Internet of Vehicles key technical means.
  • V2X communication may include, for example, vehicle-to-vehicle communication (V2V), vehicle-to-roadside infrastructure communication (Vehicle-to-Infrastructure, V2I), vehicle-to-people communication (V2P) ), and vehicle-to-application server communication (Vehicle-to-Network, V2N), etc.
  • V2V vehicle-to-vehicle communication
  • V2I vehicle-to-roadside infrastructure communication
  • V2P vehicle-to-people communication
  • V2N vehicle-to-application server communication
  • V2X devices communicate through sidelinks (sidelinks), where sidelinks may also be referred to as sidelinks, secondary links, sidelinks, and sidelinks.
  • sidelinks may also be referred to as sidelinks, secondary links, sidelinks, and sidelinks.
  • the auxiliary link terminal and the auxiliary link terminal can use the resources configured by the network device to communicate directly through the auxiliary link, such as Internet access, phone calls, location information notification and other security aspects.
  • the signaling interaction does not need to be relayed by network equipment.
  • FIG. 1 is a schematic diagram of a V2X communication scenario provided by an embodiment of the present application
  • FIG. 2 is another method provided by an embodiment of the present application.
  • the first method is the scheduled resource allocation method.
  • the base station configures resources for secondary link communication for the V2X device. For example, see FIG. 1.
  • the base station can base on the request message sent by the terminal device. , dynamically or semi-dynamically schedule resources for terminal devices. In this way, the terminal device can communicate using the resources scheduled by the base station.
  • This method is mainly used in mode 3 (mode 3) in LTE V2X communication and mode 1 (mode 1) in NR V2X communication.
  • the second method is the perception-based resource selection method, which does not require the base station to schedule resources.
  • the base station can, for example, use a system information block (SIB) ) message or radio resource control (radio resource control, RRC) signaling configures a resource pool for the terminal device, or preconfigures a resource pool. In this way, the terminal device can obtain resources from the resource pool for communication.
  • SIB system information block
  • RRC radio resource control
  • the V2X device can receive the secondary link control channel (PSCCH) sent by other V2X devices in the resource awareness window, determine the reserved resources of other V2X devices according to the PSCCH, and then exclude them from the resource selection window.
  • PSCCH secondary link control channel
  • This method is mainly applied to mode 4 (mode4) in LTE V2X communication and mode 2 (mode2) in NR V2X communication.
  • mode4 mode 4
  • mode2 mode 2
  • NR V2X communication In perception-based resource selection,
  • V2X devices cannot receive PSCCH sent by other V2X devices while sending secondary link data, which in turn makes V2X devices unable to respond to the occurrence of The half-duplex time slot excludes the reserved resources of other V2X devices within the resource selection window.
  • a scheme of excluding all possible reserved resources is introduced in LTE V2X communication, that is, when a V2X device sends secondary link data in a certain time slot within the resource awareness window, the The reservation period obtains a group of time slots, and for the time slots in the group of time slots that fall within the resource selection window, all frequency domain resources on these time slots will be excluded.
  • NR V2X communication supports a more flexible reservation period. If the above method of excluding reserved resources in LTE V2X communication is continued, there will be too few resources in the resource selection window, or no resources can be selected, which will lead to NR V2X Communication resource efficiency is reduced, and communication fails.
  • the terminal device will encounter hidden node problems (hidden-node problem), exposed node problems (exposed-node problem), and other
  • hidden node problems hidden-node problem
  • exposed node problems exposed-node problem
  • continuous resource collision caused by the reasons will affect the resource utilization efficiency and transmission reliability of the perception-based resource selection method.
  • FIG. 3 is a schematic diagram of a hidden node provided by an embodiment of the present application.
  • terminal device 1 As shown in Figure 3, it is assumed that there are currently three terminal devices, namely terminal device 1, terminal device 2, and terminal device 3.
  • the terminal device 1 transmits data to the terminal device 2, and the terminal device 3 also transmits data to the terminal device 2.
  • the terminal device 1 and the terminal device 2 are not within the transmission range of each other, they cannot sense each other.
  • the terminal device 1 and the terminal device 2 are called hidden nodes, and the problem of misjudgment due to the transmission distance is called the hidden node problem.
  • the inter-user cooperation mechanism means that a terminal device sends a set of resource information to another terminal device to Help it with resource selection.
  • the secondary link resource processing method provided by the embodiments of the present application specifically proposes how the first terminal device indicates resource information to the second terminal device.
  • the following describes the secondary link resource processing method provided by the present application with reference to specific embodiments.
  • FIG. 4 is a schematic diagram of the selection of cooperative resources among users according to an embodiment of the present application.
  • the second terminal device uses mode 2 in NR V2X communication to select secondary link transmission resources, and sends secondary link data to other terminal devices.
  • the other terminal devices may be one or more, and the second terminal device may The data is sent to the third terminal device through unicast, multicast, or broadcast.
  • other terminal devices refer to any one or more terminal devices that perform data transmission with the second terminal device.
  • the secondary link transmission resources determined by the second terminal device may include, for example: the second terminal device obtains the secondary link transmission resources through its own perception, and/or the second terminal device obtains the secondary link transmission resources from the first terminal device through cooperation between users A set of secondary link resources, where the first terminal device can determine a set of resources for the second terminal device through a sensing method, and the set of resources can be recommended for use by the first terminal device or not recommended for use by the first terminal device.
  • the second terminal device selects the secondary link transmission resources ultimately used for transmission, for example, it may comprehensively consider acquiring a set of secondary link transmission resources through its own perception and/or obtaining a set of secondary link transmission resources from the first terminal device through cooperation between users channel resources, and the selection of secondary link transmission resources ultimately used for transmission depends on the implementation of the second terminal device.
  • FIG. 5 is a flowchart of the method for processing secondary link resources provided by the embodiment of the present application.
  • the method includes:
  • the second terminal device receives the indication information sent by the first terminal device, where the indication information is used to indicate the first resource.
  • the second terminal device is a terminal device that needs to perform data transmission
  • the first terminal device is a terminal device that indicates resources to the second terminal device.
  • the second terminal device may receive the indication information sent by the first terminal device, where the indication information is used to indicate the first resource.
  • the first terminal device may indicate to the second terminal device the first resource that is allowed to be used by the second terminal device, or may be understood as being recommended for use;
  • the first terminal device may indicate to the second terminal device the first resource that is not allowed to be used by the second terminal device, or may be understood as not recommended to be used.
  • This embodiment does not specifically limit the specific implementation manner of the first resource indicated by the first terminal device, which may specifically depend on the implementation of the first terminal device.
  • the second terminal device determines, according to the first resource, secondary link transmission resources of the second terminal device, where the secondary link transmission resources are used for data transmission between the second terminal device and other terminal devices.
  • the second terminal device After the second terminal device receives the indication information, it can determine the secondary link transmission resource used for data transmission of the second terminal device according to the first resource indicated by the indication information.
  • the second terminal device may, for example, determine that the secondary link transmission resource is the first resource, so that the first resource data transmission on the
  • the second terminal device may exclude the first resource, for example, so that the first resource is outside the first resource.
  • Resources are selected, and the specific implementation mode of the selection can refer to a possible implementation mode of existing people, which is not particularly limited in this embodiment, and at this time, the second terminal device can select other than the first resource
  • the resource is determined as the secondary link transmission resource, so that data transmission is performed on resources other than the first resource.
  • the secondary link transmission resource determined by the second terminal device according to the indication information is used for data transmission with other terminal devices, and the other terminal device is a terminal device for data transmission by the second terminal device, which may be Any terminal device other than the second terminal device.
  • the other terminal devices may be one or more indicated terminal devices. For example, it is currently determined that other terminal devices are the first terminal device, then the indication information sent by the first terminal device at this time is to use It is understood that the first resource indicated by the indication information is only valid for the first terminal device at this time. , for example, currently there is a third terminal device, then the first resource indicated by the indication information is invalid to the third terminal device at this time.
  • the other terminal device may also be a third terminal device, that is, a terminal device other than the first terminal device and the second terminal device.
  • the implementation method is similar to that described above, except that the first resource indicated by the current terminal device is only valid for
  • the third terminal device is valid, which is specifically the resources that the first terminal device is allowed to use or the resources that are not allowed to be used when the first terminal device performs data transmission with the third terminal device, and terminal devices other than the first terminal device and the third terminal device.
  • the indication information may not specifically indicate the terminal device, then the other terminal device is any terminal device except the second terminal device at this time, that is to say, no matter which terminal device the second terminal device communicates with, it needs to be Refer to the first resource indicated by the current indication information.
  • the second terminal device determines the secondary link transmission resources for data transmission with other terminal devices according to the first resource indicated by the indication information, which can effectively avoid concealment. Node problem and half-duplex problem.
  • the second terminal device and the third terminal device cannot perceive each other
  • the first terminal device sends data, in this case, the first terminal device can sense the second terminal device and the third terminal device at the same time, then the first terminal device can, for example, send indication information to the second terminal device to indicate The second terminal device should not send on the first resource that conflicts with the third terminal device, or instruct the second terminal device to send on the first resource that does not conflict with the third terminal device, so that the hidden node problem can be effectively solved, and when When the other terminal device is the third terminal device, the implementation manner is similar.
  • the second terminal device determines the secondary link transmission resource according to the indication information by receiving the indication information sent by the first terminal device, thereby effectively preventing the second terminal device from being unable to target the time slot in which half-duplex occurs. Eliminate the problem of reserved resources of other terminal devices in the resource selection window.
  • the method for processing secondary link resources includes: the second terminal device receives indication information sent by the first terminal device, where the indication information is used to indicate the first resource.
  • the second terminal device determines the secondary link transmission resource of the second terminal device according to the first resource, where the secondary link transmission resource is used for data transmission between the second terminal device and other terminal devices.
  • the second terminal device determines the secondary link transmission resource for data transmission with other terminal devices according to the first resource indicated by the indication information, so that the hidden node problem and the half-duplex problem can be effectively avoided. to avoid resource collisions and improve transmission reliability.
  • the other terminal equipment introduced above may be, for example, the first terminal equipment introduced above, or may also be the third terminal equipment.
  • terminal device or may also be an unspecified terminal device, and in this embodiment, the second terminal device can perform unicast communication and can also perform multicast communication, then the corresponding other terminal device can be a terminal device, or There may be multiple terminal devices, and various possible implementation manners here will be described separately below.
  • FIG. 6 is a schematic diagram of the implementation of the unicast communication between the second terminal device and the first terminal device according to an embodiment of the application. .
  • the second terminal device and the first terminal device perform unicast communication.
  • the first terminal device can receive secondary link data sent by the second terminal device, and the first terminal device can send data to the second terminal device.
  • the terminal device sends indication information to indicate a group of first resources.
  • the first resource may be a set of resources expected by the first terminal device to be used by the second terminal device when the second terminal device sends secondary link data to the first terminal device, or may be a set of resources that the first terminal device does not expect the second terminal device to use A collection of resources used by the device. Therefore, this embodiment mainly solves the hidden node problem encountered when the second terminal device communicates with the first terminal device. In this embodiment, other terminal devices are limited to the first terminal device.
  • the indication information in this embodiment may be secondary link control information (Sidelink control information, SCI).
  • SCI secondary link control information
  • the first terminal device indicates the first resource through the SCI, where, for example, the SCI may include a first indication field, where the first indication field is used to indicate information of other terminal devices.
  • the value of the first indication field may be obtained according to the identifier of the first terminal device.
  • the first terminal device may set the value of the first indication field to the source (source) layer-2 ID (layer-2ID) or destination (layer-2ID) of the first terminal device.
  • the value of the first indication field in the SCI can be any of the following:
  • the value of the first indication field is specifically set to may depend on the selection of the first terminal device, which is not particularly limited in this embodiment.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, by reading the first indication field, it can determine that other terminal devices are the first terminal device, and then the second terminal device and the first terminal device perform data communication between the second terminal device and the first terminal device. During transmission, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the indication information is SCI
  • SCI is physical layer signaling
  • the number of bits of SCI is as small as possible.
  • the M bits of the identifier of the first terminal device are used as the value of the first indication field. Because the second terminal device needs to communicate with the first terminal device, the first terminal device can also be determined only according to the M bits.
  • the value of the first indication field may be a state value of X bits, where X is an integer greater than or equal to 1.
  • the current first indication field includes X bits of information, with a total of 2 X state values: the first state value, the second state value, the third state value, ..., the second X state value, where each state The value may indicate an additional end device.
  • the first terminal device may, for example, set the value of the first indication field to the first state value.
  • the specific implementation manner can be selected according to actual requirements, which is not particularly limited here.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, it can determine that another terminal device is the first terminal device by reading the first indication field, and then the second terminal device and the first terminal device perform data transmission. At the time, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the indication information may adopt two-stage auxiliary link control information formats, namely the first-stage auxiliary link control information (1st stage SCI) and the second-stage auxiliary link control information.
  • the link control information (2nd stage SCI) indicates the first resource.
  • the first indication field may be included in the secondary link control information format of the second stage.
  • the indication information may also adopt a single-phase secondary link control information format, and in this case, the first indication field is included in the single secondary link control information format.
  • the indication information may further include a resource location indication field, where the resource location indication field is used to indicate a time-frequency domain location where the first resource is located.
  • the indication information may further include a source (source) layer-1 ID (layer-1ID) of the first terminal device and a destination (destination) layer-1 ID (layer-1ID) of the second terminal device to indicate the current indication information is sent by the first terminal device to the second terminal device.
  • a source (source) layer-1 ID (layer-1ID) of the first terminal device and a destination (destination) layer-1 ID (layer-1ID) of the second terminal device to indicate the current indication information is sent by the first terminal device to the second terminal device.
  • the instruction information is SCI.
  • the instruction information can also be high-level signaling, wherein, high-level signaling can be, for example, a media access control layer control element (Media Access Control Control Element). , MAC CE) or radio resource control (Radio Resource Control, RRC), carried by the secondary link data channel (Physical Sidelink Shared Channel, PSSCH).
  • high-level signaling can be, for example, a media access control layer control element (Media Access Control Control Element). , MAC CE) or radio resource control (Radio Resource Control, RRC), carried by the secondary link data channel (Physical Sidelink Shared Channel, PSSCH).
  • the first terminal device indicates the first resource through high layer signaling, wherein the high layer signaling may include, for example, a second indication field, where the second indication field is used to indicate information of other terminal devices.
  • the high layer signaling may include, for example, a second indication field, where the second indication field is used to indicate information of other terminal devices.
  • the value of the second indication field may be obtained according to the identifier of the first terminal device.
  • the first terminal device may set the value of the first indication field to the source layer 2 identifier or the destination layer 2 identifier (layer-2ID) of the first terminal device, Indicates that the current other terminal device is the first terminal device.
  • the value of the second indication field in the high-layer signaling can be any of the following:
  • the destination layer 2 identifier of the first terminal device is the destination layer 2 identifier of the first terminal device.
  • the second terminal device When the second terminal device receives the high-level signaling sent by the first terminal device, it can determine that other terminal devices are the first terminal device by reading the second indication field, and then the second terminal device and the first terminal device perform During data transmission, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the second indication field includes the complete layer two identification.
  • the value of the second indication field may be a state value of X bits, where X is an integer greater than or equal to 1.
  • the current second indication field includes X bits of information, with a total of 2 X state values: the first state value, the second state value, the third state value, ..., the second X state value, where each state The value may indicate an additional end device.
  • the first terminal device may, for example, set the value of the first indication field to the first state value.
  • the specific implementation manner can be selected according to actual requirements, which is not particularly limited here.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, it can determine that other terminal devices are the first terminal device by reading the second indication field, and then perform data transmission between the second terminal device and the first terminal device At the time, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the second terminal device will refer to the first resource indicated by the indication information only when transmitting the secondary link data with the first terminal device, and the terminal device other than the first terminal device will refer to the first resource indicated by the indication information.
  • the device does not need to refer to the current indication information when transmitting.
  • the second terminal device and the first terminal device perform unicast communication, and the first terminal device sends indication information to the second terminal device to indicate the first resource, thereby indicating that the second terminal device communicates with the first terminal device.
  • the resources expected to be used by the second terminal device or the resources not expected to be used by the second terminal device can be effectively avoided by the instructions of the first terminal device when the second terminal device performs data transmission.
  • the problem of hidden nodes encountered can effectively avoid resource collision and improve the reliability of transmission.
  • FIG. 7 is a terminal device of the second terminal device and the first terminal device provided by the embodiment of the application.
  • the second terminal device performs multicast communication with the terminal device group corresponding to the first terminal device.
  • the terminal device group may include, for example, the first terminal device 1, the first terminal device 2, the first terminal device Terminal device 3, wherein each first terminal device in the first terminal device group can receive the secondary link data sent by the second terminal device, and one or more first terminal devices in the first terminal device group can respectively send the data to the first terminal device group.
  • the second terminal device sends indication information to indicate a group of first resources.
  • the first resource may be a set of resources expected by the first terminal device to be used by the second terminal device when the second terminal device sends the secondary link data to the terminal device group corresponding to the first terminal device, and may also be the first terminal device A set of resources not expected to be used by the second terminal device. Therefore, this embodiment mainly solves the hidden node problem encountered when the second terminal device communicates with the terminal device group corresponding to the first terminal device. In this embodiment, other terminal devices are limited to the terminal devices corresponding to the third terminal device. Group.
  • the indication information in this embodiment may be an SCI.
  • SCI Session Initiation manner, the indication information in this embodiment is an SCI.
  • the first terminal device indicates the first resource through the SCI, where, for example, the SCI may include a first indication field, where the first indication field is used to indicate information of other terminal devices.
  • the first resource is sent
  • the first terminal device may be any first terminal device in the first terminal device group.
  • the value of the first indication field may be obtained according to the group identifier of the first terminal device group.
  • the first terminal device may set the value of the first indication field to the first M bits in the high-order bits (MSB) or low-order bits (LSB) of a group layer-2 ID (layer-2ID) of a group of terminal devices for multicast communication.
  • the value range of M is 1-24.
  • the value of the first indication field in the SCI can be any of the following:
  • the value of the first indication field is specifically set to may depend on the selection of the first terminal device, which is not particularly limited in this embodiment.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, by reading the first indication field, it can determine that other terminal devices are the terminal devices in the first terminal device group, then the second terminal device and the first terminal device When a terminal device in a terminal device group performs data transmission, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the indication information is SCI
  • SCI is physical layer signaling
  • the number of bits of SCI is as small as possible.
  • the M bits of the group identifier of the first terminal equipment group are used as the value of the first indication field. Because the second terminal equipment needs to communicate with the first terminal equipment group, the first terminal equipment can also be determined only according to the M bits. device group.
  • the value of the first indication field may be a state value of X bits, where X is an integer greater than or equal to 1.
  • the current first indication field includes X bits of information, with a total of 2 X state values: the first state value, the second state value, the third state value, ..., the second X state value, where each state The value may indicate an additional end device.
  • the first terminal device may, for example, set the value of the first indication field to the first state value.
  • the specific implementation manner of each state value can be selected according to actual requirements, which is not particularly limited here.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, by reading the first indication field, it can determine that other terminal devices are terminal devices in the first terminal device group, then the second terminal device and the first terminal device When the terminal equipment in the terminal equipment group performs data transmission, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the indication information may adopt two-stage auxiliary link control information formats, namely the first-stage auxiliary link control information (1st stage SCI) and the second-stage auxiliary link control information.
  • the link control information (2nd stage SCI) indicates the first resource.
  • the first indication field may be included in the secondary link control information format of the second stage.
  • the indication information may also adopt a single-phase secondary link control information format, and in this case, the first indication field is included in the single secondary link control information format.
  • the indication information may further include a resource location indication field, where the resource location indication field is used to indicate a time-frequency domain location where the first resource is located.
  • the indication information may further include a source (source) layer-1 ID (layer-1ID) of the first terminal device and a destination (destination) layer-1 ID (layer-1ID) of the second terminal device to indicate the current indication information is sent by the first terminal device to the second terminal device.
  • a source (source) layer-1 ID (layer-1ID) of the first terminal device and a destination (destination) layer-1 ID (layer-1ID) of the second terminal device to indicate the current indication information is sent by the first terminal device to the second terminal device.
  • the indication information is SCI.
  • the indication information may also be high-level signaling, wherein, for example, the high-level signaling may be MAC CE or RRC, which is carried by PSSCH.
  • the second terminal device currently performs multicast communication with the fourth terminal device group.
  • the first terminal device indicates the first resource through high layer signaling, wherein the high layer signaling may include, for example, a second indication field, where the second indication field is used to indicate information of other terminal devices.
  • the high layer signaling may include, for example, a second indication field, where the second indication field is used to indicate information of other terminal devices.
  • the value of the second indication field may be obtained according to the group identifier of the fourth terminal device group.
  • the first terminal device may set the value of the first indication field to the group layer 2 of the fourth terminal device group for multicast communication
  • the identifier indicates that the current other terminal device is a terminal device in the fourth terminal device group.
  • the value of the second indication field in the high-layer signaling may be:
  • Group layer 2 identifier of the fourth terminal device group.
  • the second terminal device When the second terminal device receives the high-level signaling sent by the first terminal device, by reading the second indication field, it can determine that other terminal devices are the terminal devices in the fourth terminal device group, then the second terminal device and the When the terminal equipment in the fourth terminal equipment group performs data transmission, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the second indication field includes the complete layer two identification.
  • the value of the second indication field may be a state value of X bits, where X is an integer greater than or equal to 1.
  • the current second indication field includes X bits of information, with a total of 2 X state values: the first state value, the second state value, the third state value, ..., the second X state value, where each state The value may indicate an additional end device.
  • the first terminal device may, for example, set the value of the first indication field to the first state value.
  • the specific implementation manner of each state value can be selected according to actual requirements, which is not particularly limited here.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, it can determine that other terminal devices are the terminal devices in the fourth terminal device group by reading the second indication field. When the terminal equipment in the terminal equipment group performs data transmission, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the second terminal device will refer to the first resource indicated by the indication information only when the terminal device group corresponding to the first terminal device transmits the secondary link data, and the second terminal device will refer to the first resource indicated by the indication information only when the terminal device group corresponding to the first terminal device transmits the secondary link data. Terminal devices outside the device group corresponding to the device do not need to refer to the current indication information when transmitting.
  • the terminal device group in this embodiment may include multiple first terminal devices, wherein each first terminal device can send indication information to the second terminal device, and each first terminal device can respectively indicate their respective first resources, then when the second terminal device performs multicast communication with the device group corresponding to the first terminal device, it needs to refer to the first resources sent by each first terminal device, for example, the current first terminal device 1 Indicates that data transmission cannot be performed on resource A, and the first terminal device 2 indicates that data transmission cannot be performed on resource B, then when the second terminal device performs data transmission in the terminal device group corresponding to the first terminal device, it is Neither resource A nor resource B can transmit.
  • the second terminal device and the terminal device group corresponding to the first terminal device perform multicast communication, and the first terminal device sends indication information to the second terminal device to indicate the first resource, thereby indicating the
  • the second terminal device communicates with the terminal device group corresponding to the first terminal device, resources that are expected to be used by the second terminal device or resources that are not expected to be used by the second terminal device can be effectively avoided through the instructions of the first terminal device.
  • the problem of hidden nodes that may be encountered by the two terminal equipment during data transmission can effectively avoid resource collision and improve the reliability of transmission.
  • FIG. 8 is a schematic diagram of the implementation of the unicast communication between the second terminal device and the third terminal device according to an embodiment of the application. .
  • the second terminal device and the third terminal device perform unicast communication.
  • the third terminal device can receive the secondary link data sent by the second terminal device, and the first terminal device can send the second terminal device to the second terminal device.
  • the terminal device sends indication information to indicate a group of first resources.
  • the third terminal device is a different terminal device from the second terminal device, and the specific type of the third terminal device can be selected according to actual needs, which is not limited in this embodiment.
  • the first resource may be a set of resources recommended by the first terminal device to be used by the second terminal device according to the sensing result when the second terminal device sends the secondary link data to the third terminal device, and may also be a set of resources that the second terminal device does not recommend to use.
  • a collection of resources used by the device Therefore, this embodiment mainly solves the hidden node problem encountered when the second terminal device communicates with the third terminal device, and other terminal devices are limited to the third terminal device in this embodiment.
  • the indication information in this embodiment may be an SCI.
  • SCI Session Initiation manner, the indication information in this embodiment is an SCI.
  • the first terminal device indicates the first resource through the SCI, where, for example, the SCI may include a first indication field, where the first indication field is used to indicate information of other terminal devices.
  • the value of the first indication field may be obtained according to the identifier of the third terminal device.
  • the first terminal device may set the value of the first indication field to the source (source) layer-2 ID (layer-2ID) or destination (layer-2ID) of the third terminal device.
  • the source layer 2 identifier or the destination layer 2 identifier of the third terminal device may be notified to the first terminal device in advance by the second terminal device.
  • the value of the first indication field in the SCI can be any of the following:
  • the value of the first indication field is specifically set to may depend on the selection of the first terminal device, which is not particularly limited in this embodiment.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, by reading the first indication field, it can determine that the other terminal device is the third terminal device, and then the second terminal device and the third terminal device perform data processing between the second terminal device and the third terminal device.
  • the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the indication information is SCI
  • SCI is physical layer signaling
  • the number of bits of SCI is as small as possible.
  • the M bits of the identifier of the first terminal device are used as the value of the first indication field. Because the second terminal device needs to communicate with the third terminal device, the third terminal device can be determined only according to the M bits.
  • the value of the first indication field may be a state value of X bits, where X is an integer greater than or equal to 1.
  • the current first indication field includes X bits of information, with a total of 2 X state values: the first state value, the second state value, the third state value, ..., the second X state value, where each state The value may indicate an additional end device.
  • the first terminal device may, for example, set the value of the first indication field to the second state value.
  • the specific implementation manner can be selected according to actual requirements, which is not particularly limited here.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, it can determine that the other terminal device is the third terminal device by reading the first indication field, and then perform data transmission between the second terminal device and the third terminal device At the time, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the indication information may adopt two-stage auxiliary link control information formats, namely the first-stage auxiliary link control information (1st stage SCI) and the second-stage auxiliary link control information.
  • the link control information (2nd stage SCI) indicates the first resource.
  • the first indication field may be included in the secondary link control information format of the second stage.
  • the indication information may also adopt a single-phase secondary link control information format, and in this case, the first indication field is included in the single secondary link control information format.
  • the indication information may further include a resource location indication field, where the resource location indication field is used to indicate a time-frequency domain location where the first resource is located.
  • the indication information may also include a source (source) layer-1 ID (layer-1 ID) of the first terminal device and a destination (destination) layer-1 ID (layer-1 ID) of the second terminal device to indicate the current indication
  • the information is sent by the first terminal device to the second terminal device.
  • the indication information is SCI.
  • the indication information may also be high-level signaling, wherein, for example, the high-level signaling may be MAC CE or RRC, which is carried by PSSCH.
  • the first terminal device indicates the first resource through high layer signaling, wherein the high layer signaling may include, for example, a second indication field, where the second indication field is used to indicate information of other terminal devices.
  • the high layer signaling may include, for example, a second indication field, where the second indication field is used to indicate information of other terminal devices.
  • the value of the second indication field may be obtained according to the identity of the third terminal device.
  • the first terminal device may set the value of the first indication field to the source layer 2 identifier or the destination layer 2 identifier (layer-2ID) of the third terminal device, Indicates that the current other terminal device is the third terminal device.
  • the value of the second indication field in the high-layer signaling can be any of the following:
  • the source layer 2 identifier of the third terminal device or,
  • the destination layer 2 identifier of the third terminal device is the destination layer 2 identifier of the third terminal device.
  • the second terminal device When the second terminal device receives the high-level signaling sent by the first terminal device, it can determine that the other terminal device is the third terminal device by reading the second indication field. During data transmission, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the second indication field includes the complete layer two identification.
  • the value of the second indication field may be a state value of X bits, where X is an integer greater than or equal to 1.
  • the current second indication field includes X bits of information, with a total of 2 X state values: the first state value, the second state value, the third state value, ..., the second X state value, where each state The value may indicate an additional end device.
  • the first terminal device may, for example, set the value of the first indication field to the second state value.
  • the specific implementation manner can be selected according to actual requirements, which is not particularly limited here.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, it can determine that the other terminal device is the third terminal device by reading the second indication field, and then perform data transmission between the second terminal device and the third terminal device At the time, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the second terminal device will refer to the first resource indicated by the indication information only when transmitting the secondary link data with the third terminal device, and the terminal device other than the third terminal device will refer to the first resource indicated by the indication information.
  • the device does not need to refer to the current indication information when transmitting.
  • the second terminal device and the third terminal device perform unicast communication, and the first terminal device sends indication information to the second terminal device to indicate the first resource, thereby indicating that the second terminal device communicates with the third terminal device.
  • the first terminal device recommends resources used by the second terminal device or does not recommend resources used by the second terminal device according to the perception result.
  • the terminal equipment transmits data it may encounter the problem of hidden nodes, which effectively avoids resource collision and improves the reliability of transmission.
  • FIG. 9 is the terminal device of the second terminal device and the third terminal device provided by the embodiment of the application.
  • the second terminal device performs multicast communication with the terminal device group corresponding to the third terminal device.
  • the terminal device group may include, for example, the third terminal device 1 , the third terminal device 2 , the third terminal device 2 , and the third terminal device.
  • Terminal device 3 wherein each third terminal device in the terminal device group can receive the secondary link data sent by the second terminal device, and the first terminal device can send indication information to the second terminal device to indicate a group of first resources .
  • the first resource may be a set of resources recommended by the first terminal device to be used by the second terminal device when the second terminal device sends the secondary link data to the terminal device group corresponding to the third terminal device, and may also be the first terminal device A set of resources not recommended for use by the second terminal device. Therefore, this embodiment mainly solves the hidden node problem encountered when the second terminal device communicates with the terminal device group corresponding to the third terminal device. In this embodiment, other terminal devices are limited to the terminal devices corresponding to the third terminal device. Group.
  • the indication information in this embodiment may be an SCI.
  • SCI Session Initiation manner, the indication information in this embodiment is an SCI.
  • the first terminal device indicates the first resource through the SCI, where, for example, the SCI may include a first indication field, where the first indication field is used to indicate information of other terminal devices.
  • the value of the first indication field may be obtained according to the group identifier of the first terminal device group.
  • the first terminal device may set the value of the first indication field to the second terminal device M bits in the high-order bits (MSB) or low-order bits (LSB) of the group layer 2 identifier for the group of terminal equipment to perform multicast communication.
  • M high-order bits
  • LSB low-order bits
  • the second terminal device may notify the first terminal device in advance of the group layer 2 identifier of the second terminal device performing the multicast communication with the terminal device group of the third terminal device.
  • the value of the first indication field in the SCI can be any of the following:
  • the value of the first indication field is specifically set to may depend on the selection of the first terminal device, which is not particularly limited in this embodiment.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, by reading the first indication field, it can determine that other terminal devices are the terminal devices in the second terminal device group, then the second terminal device and the first terminal device When the terminal equipment in the two terminal equipment group performs data transmission, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the indication information is SCI
  • SCI is physical layer signaling
  • the number of bits of SCI is as small as possible.
  • the M bits of the group identifier of the first terminal equipment group are used as the value of the first indication field. Because the second terminal equipment needs to communicate with the second terminal equipment group, the second terminal equipment can also be determined only according to the M bits. device group.
  • the value of the first indication field may be a state value of X bits, where X is an integer greater than or equal to 1.
  • the current first indication field includes X bits of information, with a total of 2 X state values: the first state value, the second state value, the third state value, ..., the second X state value, where each state The value may indicate an additional end device.
  • the first terminal device may, for example, set the value of the first indication field to the second state value.
  • the specific implementation manner of each state value can be selected according to actual requirements, which is not particularly limited here.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, by reading the first indication field, it can determine that other terminal devices are terminal devices in the second terminal device group, then the second terminal device and the second terminal device When the terminal equipment in the terminal equipment group performs data transmission, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the indication information may adopt two-stage auxiliary link control information formats, namely the first-stage auxiliary link control information (1st stage SCI) and the second-stage auxiliary link control information.
  • the link control information (2nd stage SCI) indicates the first resource.
  • the first indication field may be included in the secondary link control information format of the second stage.
  • the indication information may also adopt a single-phase secondary link control information format, and in this case, the first indication field is included in the single secondary link control information format.
  • the indication information may further include a resource location indication field, where the resource location indication field is used to indicate a time-frequency domain location where the first resource is located.
  • the indication information may also include a source (source) layer-1 ID of the first terminal device and a destination (destination) layer-1 ID of the second terminal device, to indicate the current indication
  • the information is sent by the first terminal device to the second terminal device.
  • the indication information is SCI.
  • the indication information may also be high-level signaling, wherein, for example, the high-level signaling may be MAC CE or RRC, which is carried by PSSCH.
  • the second terminal device currently performs multicast communication with the third terminal device group.
  • the first terminal device indicates the first resource through high layer signaling, wherein the high layer signaling may include, for example, a second indication field, where the second indication field is used to indicate information of other terminal devices.
  • the high layer signaling may include, for example, a second indication field, where the second indication field is used to indicate information of other terminal devices.
  • the value of the second indication field may be obtained according to the group identifier of the third terminal device group.
  • the other terminal device is the third terminal device in the third terminal device group
  • the first terminal device may set the value of the first indication field to the group layer 2 of the third terminal device group for multicast communication
  • the identifier indicates that the current other terminal device is a terminal device in the third terminal device group.
  • the value of the second indication field in the high-layer signaling may be:
  • the group layer 2 identifier of the third terminal device group is the group layer 2 identifier of the third terminal device group.
  • the second terminal device When the second terminal device receives the high-level signaling sent by the first terminal device, by reading the second indication field, it can determine that other terminal devices are the terminal devices in the third terminal device group, then the second terminal device and the When the terminal equipment in the third terminal equipment group performs data transmission, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the second indication field includes the complete layer two identification.
  • the value of the second indication field may be a state value of X bits, where X is an integer greater than or equal to 1.
  • the current second indication field includes X bits of information, with a total of 2 X state values: the first state value, the second state value, the third state value, ..., the second X state value, where each state The value may indicate an additional end device.
  • the first terminal device may, for example, set the value of the first indication field to the second state value.
  • the specific implementation manner of each state value can be selected according to actual requirements, which is not particularly limited here.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, by reading the second indication field, it can determine that other terminal devices are terminal devices in the third terminal device group, then the second terminal device and the third terminal device When the terminal equipment in the terminal equipment group performs data transmission, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the second terminal device will refer to the first resource indicated by the indication information only when the terminal device group corresponding to the third terminal device transmits the secondary link data, and only when the terminal device group corresponding to the third terminal device transmits the secondary link data. Terminal devices outside the device group corresponding to the device do not need to refer to the current indication information when transmitting.
  • the second terminal device and the terminal device group corresponding to the third terminal device perform multicast communication, and the first terminal device sends indication information to the second terminal device to indicate the first resource, thereby indicating the
  • the second terminal device communicates with the terminal device group corresponding to the third terminal device, the resources used by the second terminal device or the resources that are not recommended to be used by the second terminal device can be effectively avoided through the instructions of the first terminal device.
  • the problem of hidden nodes that may be encountered by the two terminal equipment during data transmission can effectively avoid resource collision and improve the reliability of transmission.
  • the indication information indicates which one or which group the other terminal equipment is. In another possible implementation manner of the present application, the indication information may not indicate other terminal equipment. When it means that the second terminal device needs to refer to the first resource indicated by the current indication information when performing data transmission with which terminal device.
  • FIG. 10 is a schematic diagram of implementing broadcast communication by a second terminal device according to an embodiment of the present application.
  • the second terminal device performs unicast (refer to FIG. 8 ), multicast (refer to FIG. 9 ) or broadcast communication (refer to FIG. 10 ) with other terminal devices (groups) other than the first terminal device.
  • terminal devices can receive the secondary link data sent by the second terminal device, and the first terminal device can send indication information to the second terminal device to indicate a set of first resources.
  • the first resource may be a set of resources recommended by the first terminal device to be used by the second terminal device when the second terminal device sends secondary link data to other terminal devices, without restricting specific other terminal devices (groups), and may also be A set of resources that the first terminal device does not recommend for use by the second terminal device. Therefore, this embodiment mainly solves the problem that the second terminal device is limited in its own resource sensing due to the half-duplex problem. Therefore, no other specific terminal device is specified in this embodiment.
  • the indication information in this embodiment may be secondary link control information (Sidelink control information, SCI).
  • SCI secondary link control information
  • the first terminal device indicates the first resource through the SCI, where, for example, the SCI may include a first indication field, where the first indication field is used to indicate information of other terminal devices.
  • the value of the first indication field may be that the first terminal device sets the value of the field to a fixed value of M bits, such as M all 0s or all 1s, or M bits of For specific values, etc., the value range of M is 1-24.
  • the value of the first indication field in the SCI may be: the first preset value of M bits, where M is greater than or equal to 1 Integer.
  • the specific implementation manner of the first preset value may be selected according to actual requirements, which is not particularly limited in this embodiment.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, by reading the first indication field, it can determine that other terminal devices that are not currently designated are the first terminal device, then the second terminal device and other terminal devices When the device performs data transmission, it can determine the required secondary link transmission resource according to the first resource indicated by the indication information.
  • the indication information is SCI
  • SCI is physical layer signaling
  • the number of bits of SCI is as small as possible.
  • the first preset value of the M bits is used as the value of the first indication field.
  • the value of the first indication field may be a state value of X bits, where X is an integer greater than or equal to 1.
  • the current first indication field includes X bits of information, with a total of 2 X state values: the first state value, the second state value, the third state value, ..., the second X state value, where each state The value may indicate an additional end device.
  • the first terminal device may, for example, set the value of the first indication field to the third state value.
  • the specific implementation methods of each state value It can be selected according to actual needs, which is not particularly limited here.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, it can determine that no other terminal device is currently specified by reading the first indication field.
  • the required secondary link transmission resources may be determined according to the first resources indicated by the indication information.
  • the indication information may adopt two-stage auxiliary link control information formats, namely the first-stage auxiliary link control information (1st stage SCI) and the second-stage auxiliary link control information.
  • the link control information (2nd stage SCI) indicates the first resource.
  • the first indication field may be included in the secondary link control information format of the second stage.
  • the indication information may also adopt a single-phase secondary link control information format, and in this case, the first indication field is included in the single secondary link control information format.
  • the indication information may further include a resource location indication field, where the resource location indication field is used to indicate a time-frequency domain location where the first resource is located.
  • the indication information may further include a source (source) layer-1 ID (layer-1ID) of the first terminal device and a destination (destination) layer-1 ID (layer-1ID) of the second terminal device to indicate the current indication information is sent by the first terminal device to the second terminal device.
  • a source (source) layer-1 ID (layer-1ID) of the first terminal device and a destination (destination) layer-1 ID (layer-1ID) of the second terminal device to indicate the current indication information is sent by the first terminal device to the second terminal device.
  • the indication information is SCI.
  • the indication information may also be high-level signaling, wherein, for example, the high-level signaling may be MAC CE or RRC, which is carried by PSSCH.
  • the first terminal device indicates the first resource through high layer signaling, wherein the high layer signaling may include, for example, a second indication field, where the second indication field is used to indicate information of other terminal devices.
  • the high layer signaling may include, for example, a second indication field, where the second indication field is used to indicate information of other terminal devices.
  • the value of the second indication field may be that the first terminal device sets the value of the field to a fixed value of R bits, such as R all 0s or all 1s, or R bits of A specific value, etc., R is the number of bits of the second indication field.
  • the value of the second indication field in the high-level signaling may be: the second preset value of the R bit.
  • the second terminal device When the second terminal device receives the high-level signaling sent by the first terminal device, by reading the second indication field, it can determine that no other terminal device is currently specified, and then the second terminal device and other terminal devices perform data transmission in the At all times, the required secondary link transmission resource may be determined according to the first resource indicated by the indication information.
  • the indication information is high-level signaling
  • the high-level signaling is carried by the data channel
  • the bits of the two indication fields are both set to the second preset value.
  • the value of the second indication field may be a state value of X bits, where X is an integer greater than or equal to 1.
  • the current second indication field includes X bits of information, with a total of 2 X state values: the first state value, the second state value, the third state value, ..., the second X state value, where each state The value may indicate an additional end device.
  • the first terminal device may, for example, set the value of the first indication field to the third state value.
  • the specific implementation methods of each state value It can be selected according to actual needs, which is not particularly limited here.
  • the second terminal device When the second terminal device receives the indication information sent by the first terminal device, it can determine that no other terminal device is currently specified by reading the second indication field.
  • the required secondary link transmission resources may be determined according to the first resources indicated by the indication information.
  • the second terminal equipment will refer to the first resource indicated by the indication information when transmitting secondary link data with each terminal equipment.
  • the first terminal device sends indication information to the second terminal device to indicate the first resource, And indicate that no specific other terminal equipment is currently specified, thereby indicating that when the second terminal equipment communicates with each other terminal equipment, the resources that are expected to be used by the second terminal equipment or the resources that are not expected to be used by the second terminal equipment, through the first terminal equipment.
  • the indication of the terminal device can effectively avoid the problem that the second terminal device is limited in its own resource perception due to the half-duplex problem, effectively avoids resource collision, and improves the reliability of transmission.
  • the meanings of the first state value, the second state value and the third state value are exemplarily introduced.
  • the remaining state values can be used as The state is reserved for subsequent function expansion; or, the specific meaning of each state value is not limited to the above description, and can be selected according to actual needs, which is not limited in this embodiment.
  • the second terminal device determines data processing with other terminal devices according to the first resource indicated by the indication information by receiving the indication information sent by the first terminal device.
  • the secondary link transmission resources of the transmission can effectively avoid the hidden node problem and the half-duplex problem, avoid resource collision, and improve the reliability of transmission.
  • FIG. 11 is a schematic structural diagram of an apparatus for processing secondary link resources according to an embodiment of the present application.
  • the apparatus 110 includes: a receiving module 1101 and a determining module 1102 .
  • the receiving module 1101 is used for the second terminal device to receive the indication information sent by the first terminal device, wherein the indication information is used to indicate the first resource;
  • a determining module 1102 configured for the second terminal device to determine, according to the first resource, the secondary link transmission resource of the second terminal device, where the secondary link transmission resource is used for the second terminal device and other Terminal equipment for data transmission.
  • the indication information includes at least one of the following information: secondary link control information SCI, and high-level instructions.
  • the SCI includes a first indication field, where the first indication field is used to indicate information of the other terminal device.
  • the second terminal device and the first terminal device perform unicast communication, and the other terminal devices include the first terminal device;
  • the value of the first indication field is the M high-order bits of the source layer 2 identifier of the first terminal device; or,
  • the value of the first indication field is the M high-order bits of the destination layer 2 identifier of the first terminal device; or,
  • the value of the first indication field is the M lower bits of the source layer 2 identifier of the first terminal device; or,
  • the value of the first indication field is the M lower bits of the target layer 2 identifier of the first terminal device
  • the M is an integer greater than or equal to 1.
  • the second terminal device and a third terminal device perform unicast communication
  • the third terminal device is a terminal device different from the first terminal device
  • the other terminal devices include all the third terminal equipment
  • the value of the first indication field is the M high-order bits of the source layer 2 identifier of the third terminal device; or,
  • the value of the first indication field is the M high-order bits of the destination layer 2 identifier of the third terminal device; or,
  • the value of the first indication field is the M lower bits of the source layer 2 identifier of the third terminal device; or,
  • the value of the first indication field is the M lower bits of the target layer 2 identifier of the third terminal device
  • the M is an integer greater than or equal to 1.
  • the second terminal device performs multicast communication with a first terminal device group corresponding to the first terminal device, and the other terminal devices include terminal devices in the first terminal device group ;
  • the value of the first indication field is the M high-order bits of the group layer 2 identifier of the first terminal device group; or,
  • the value of the first indication field is the M lower bits of the group layer 2 identifier of the first terminal device group;
  • the M is an integer greater than or equal to 1.
  • the second terminal device performs multicast communication with a second terminal device group corresponding to the third terminal device, and the other terminal devices include terminal devices in the second terminal device group ;
  • the value of the first indication field is the M high-order bits of the group layer 2 identifier of the second terminal device group; or,
  • the value of the first indication field is the M lower bits of the group layer 2 identifier of the second terminal device group;
  • the M is an integer greater than or equal to 1.
  • the first indication field is used to indicate that the other terminal device is not specified
  • the value of the first indication field is a first preset value of M bits, where M is an integer greater than or equal to 1.
  • the high-layer signaling includes a second indication field, where the second indication field is used to indicate information of the other terminal equipment.
  • the second terminal device and the first terminal device perform unicast communication, and the other terminal devices include the first terminal device;
  • the value of the second indication field is the source layer two identifier of the first terminal device; or,
  • the value of the second indication field is the destination layer 2 identifier of the first terminal device.
  • the second terminal device and a third terminal device perform unicast communication
  • the third terminal device is a terminal device different from the first terminal device
  • the other terminal devices include all the third terminal equipment
  • the value of the second indication field is the source layer 2 identifier of the third terminal device.
  • the value of the second indication field is the destination layer 2 identifier of the third terminal device.
  • the second terminal device performs multicast communication with a third terminal device group corresponding to the first terminal device, and the other terminal devices include terminal devices in the third terminal device group ;
  • the value of the second indication field is the group layer 2 identifier of the third terminal device group.
  • the second terminal device performs multicast communication with a fourth terminal device group corresponding to the third terminal device, and the other terminal devices include terminal devices in the fourth terminal device group ;
  • the value of the second indication field is the group layer 2 identifier of the fourth terminal device group.
  • the second indication field is used to indicate that the other terminal device is not specified
  • the value of the second indication field is a second preset value of R bits, where R is the number of bits of the second indication field.
  • the value of the indication field is a state value of X bits, where X is an integer greater than or equal to 1, wherein the state value includes at least any one of the following: the first state value, second state value, third state value;
  • the first state value is used to indicate that the other terminal device includes the first terminal device or a terminal device in a terminal device group corresponding to the first terminal device;
  • the second state value is used to indicate that the other terminal device includes the third terminal device or a terminal device in a terminal device group corresponding to the third terminal device;
  • the third state value is used to indicate that there is no designated other terminal device.
  • the indication information is secondary link control information of two stages, and the indication field is included in the second stage information of the secondary link control information.
  • the indication information is single-phase secondary link control information, and the indication field is included in the secondary link control information.
  • the indication information further includes a resource location indication field, where the resource location indication field is used to indicate a time-frequency domain location where the first resource is located.
  • the indication information further includes a source layer 1 identifier of the first terminal device and a destination layer 1 identifier of the second terminal device.
  • the first resource is a secondary link transmission resource that allows the second terminal device to perform data transmission
  • the first resource is a secondary link transmission resource for which the second terminal device is not allowed to perform data transmission.
  • FIG. 12 is a schematic diagram of the hardware structure of a secondary link resource processing device provided by an embodiment of the present application.
  • the secondary link resource processing device 120 in this embodiment includes: a processor 1201 and a memory 1202;
  • memory 1202 for storing computer-executed instructions
  • the processor 1201 is configured to execute the computer-executed instructions stored in the memory, so as to implement each step performed by the method for processing secondary link resources in the foregoing embodiment. For details, refer to the relevant descriptions in the foregoing method embodiments.
  • the memory 1202 may be independent or integrated with the processor 1201 .
  • the secondary link resource processing device further includes a bus 1203 for connecting the memory 1202 and the processor 1201 .
  • Embodiments of the present application further provide a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when the processor executes the computer-executable instructions, the above-mentioned secondary link resource processing device implements the execution Secondary link resource processing method.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are only illustrative.
  • the division of the modules is only a logical function division. In actual implementation, there may be other division methods.
  • multiple modules may be combined or integrated. to another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or modules, and may be in electrical, mechanical or other forms.
  • the above-mentioned integrated modules implemented in the form of software functional modules may be stored in a computer-readable storage medium.
  • the above-mentioned software function modules are stored in a storage medium, and include several instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to execute the various embodiments of the present application. part of the method.
  • processor may be a central processing unit (English: Central Processing Unit, referred to as: CPU), or other general-purpose processors, digital signal processors (English: Digital Signal Processor, referred to as: DSP), application-specific integrated circuits (English: Application Specific Integrated Circuit, referred to as: ASIC) and so on.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the invention can be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the memory may include high-speed RAM memory, and may also include non-volatile storage NVM, such as at least one magnetic disk memory, and may also be a U disk, a removable hard disk, a read-only memory, a magnetic disk or an optical disk, and the like.
  • NVM non-volatile storage
  • the bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, or the like.
  • ISA Industry Standard Architecture
  • PCI Peripheral Component
  • EISA Extended Industry Standard Architecture
  • the bus can be divided into address bus, data bus, control bus and so on.
  • the buses in the drawings of the present application are not limited to only one bus or one type of bus.
  • the above-mentioned storage medium may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Except programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM erasable except programmable read only memory
  • PROM programmable read only memory
  • ROM read only memory
  • magnetic memory flash memory
  • flash memory magnetic disk or optical disk.
  • a storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

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Abstract

本申请实施例提供一种辅链路资源处理方法及装置,该方法包括:第二终端设备接收第一终端设备发送的指示信息,其中,指示信息用于指示第一资源。第二终端设备根据第一资源,确定第二终端设备的辅链路传输资源,其中,辅链路传输资源用于第二终端设备和其他终端设备进行数据传输。第二终端设备通过接收第一终端设备发送的指示信息,以根据指示信息指示的第一资源确定和其他终端设备进行数据传输的辅链路传输资源,从而能够有效的避免隐藏节点问题和半双工问题,以避免资源碰撞,提升传输的可靠性。

Description

辅链路资源处理方法及装置
本申请要求于2020年09月29日提交中国专利局、申请号为202011053785.0、申请名称为“辅链路资源处理方法及装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信技术,尤其涉及一种辅链路资源处理方法及装置。
背景技术
车与万物(vehicle to X,V2X)通信是协议第16(Release 16,R16)版本的一个关键技术方向,NR V2X作为长期演进(Long Term Evolution,LTE)V2X的增强,是使能车联网的关键技术手段。
目前,在V2X通信中,设备可以通过基于感知的选择方式获取传输资源,其通常是设备在资源感知窗内,接收其他V2X设备发送的辅链路控制信道(physical sidelink control channel,PSCCH),根据PSCCH确定出其他V2X设备的预留资源,然后从资源选择窗中排除预留资源,从剩余可用的资源中选择出用于辅链路通信的资源。
然而,在基于感知的选择方式获取传输资源时,设备可能会遇到半双工问题、隐藏节点问题,从而会发生资源碰撞,导致传输的可靠性降低。
发明内容
本申请实施例提供一种辅链路资源处理方法及装置,以克服传输的可靠性降低的问题。
第一方面,本申请实施例提供一种辅链路资源处理方法,包括:
第二终端设备接收第一终端设备发送的指示信息,其中,所述指示信息用于指示第一资源;
所述第二终端设备根据所述第一资源,确定第二终端设备的辅链路传输资源,其中,所述辅链路传输资源用于所述第二终端设备和其他终端设备进行数据传输。
在一种可能的设计中,所述指示信息包括如下信息中的至少一种:辅链路控制信息SCI、高层指令。
在一种可能的设计中,所述SCI包括第一指示域,其中,所述第一指示域用于指示所述其他终端设备的信息。
在一种可能的设计中,所述第二终端设备和所述第一终端设备进行单播通信,所述其他终端设备包括所述第一终端设备;
所述第一指示域的值为所述第一终端设备的源层二标识的M个高比特位;或者,
所述第一指示域的值为所述第一终端设备的目的层二标识的M个高比特位;或者,
所述第一指示域的值为所述第一终端设备的源层二标识的M个低比特位;或者,
所述第一指示域的值为所述第一终端设备的目的层二标识的M个低比特位;
其中,所述M为大于等于1的整数。
在一种可能的设计中,所述第二终端设备和第三终端设备进行单播通信,所述第三终端设备为和所述第一终端设备不同的终端设备,所述其他终端设备包括所述第三终端设备;
所述第一指示域的值为所述第三终端设备的源层二标识的M个高比特位;或者,
所述第一指示域的值为所述第三终端设备的目的层二标识的M个高比特位;或者,
所述第一指示域的值为所述第三终端设备的源层二标识的M个低比特位;或者,
所述第一指示域的值为所述第三终端设备的目的层二标识的M个低比特位;
其中,所述M为大于等于1的整数。
在一种可能的设计中,所述第二终端设备和所述第一终端设备对应的第一终端设备组进行组播通信,所述其他终端设备包括所述第一终端设备组中的终端设备;
所述第一指示域的值为所述第一终端设备组的组层二标识的M个高比特位;或者,
所述第一指示域的值为所述第一终端设备组的组层二标识的M个低比特位;
其中,所述M为大于等于1的整数。
在一种可能的设计中,所述第二终端设备和所述第三终端设备对应的第二终端设备组进行组播通信,所述其他终端设备包括所述第二终端设备组中的终端设备;
所述第一指示域的值为所述第二终端设备组的组层二标识的M个高比特位;或者,
所述第一指示域的值为所述第二终端设备组的组层二标识的M个低比特位;
其中,所述M为大于等于1的整数。
在一种可能的设计中,所述第一指示域用于指示不指定所述其他终端设备;
所述第一指示域的值为M个比特的第一预设值,其中,所述M为大于等于1的整数。
在一种可能的设计中,所述高层信令包括第二指示域,其中,所述第二指示域用于指示所述其他终端设备的信息。
在一种可能的设计中,所述第二终端设备和所述第一终端设备进行单播通信,所述其他终端设备包括所述第一终端设备;
所述第二指示域的值为所述第一终端设备的源层二标识;或者,
所述第二指示域的值为所述第一终端设备的目的层二标识。
在一种可能的设计中,所述第二终端设备和第三终端设备进行单播通信,所述第三终端设备为和所述第一终端设备不同的终端设备,所述其他终端设备包括所述第三终端设备;
所述第二指示域的值为所述第三终端设备的源层二标识;或者,
所述第二指示域的值为所述第三终端设备的目的层二标识。
在一种可能的设计中,所述第二终端设备和所述第一终端设备对应的第三终端设备组进行组播通信,所述其他终端设备包括所述第三终端设备组中的终端设备;
所述第二指示域的值为所述第三终端设备组的组层二标识。
在一种可能的设计中,所述第二终端设备和所述第三终端设备对应的第四终端设备组进行组播通信,所述其他终端设备包括所述第四终端设备组中的终端设备;
所述第二指示域的值为所述第四终端设备组的组层二标识。
在一种可能的设计中,所述第二指示域用于指示不指定所述其他终端设备;
所述第二指示域的值为R比特的第二预设值,其中,所述R为所述第二指示域的比特数。
在一种可能的设计中,所述指示域的值为X个比特的状态值,所述X为大于等于1的整数,其中,所述状态值包括至少包括如下中的任一种:第一状态值、第二状态值、第三状态值;
所述第一状态值用于指示所述其他终端设备包括所述第一终端设备或者所述第一终端设备对应的终端设备组中的终端设备;
所述第二状态值用于指示所述其他终端设备包括所述第三终端设备或者所述第三终端设备对应的终端设备组中的终端设备;
所述第三状态值用于指示不存在指定所述其他终端设备。
在一种可能的设计中,所述指示信息为两个阶段的辅链路控制信息,所述指示域包括在所述辅链路控制信息的第二阶段信息中。
在一种可能的设计中,所述指示信息为单阶段的辅链路控制信息,所述指示域包括在所述辅链路控制信息中。
在一种可能的设计中,所述指示信息中还包括资源位置指示域,其中,所述资源位置指示域用于指示所述第一资源所在的时频域位置。
在一种可能的设计中,所述指示信息中还包括所述第一终端设备的源层一标识和所述第二终端设备的目的层一标识。
在一种可能的设计中,所述第一资源为允许所述第二终端设备进行数据传输的辅链路传输资源;或者
所述第一资源为不允许所述第二终端设备进行数据传输的辅链路传输资源。
第二方面,本申请实施例提供一种辅链路资源处理装置,包括:
接收模块,用于第二终端设备接收第一终端设备发送的指示信息,其中,所述指示信息用于指示第一资源;
确定模块,用于所述第二终端设备根据所述第一资源,确定第二终端设备的辅链路传输资源,其中,所述辅链路传输资源用于所述第二终端设备和其他终端设备进行数据传输。
在一种可能的设计中,所述指示信息包括如下信息中的至少一种:辅链路控制信息SCI、高层指令。
在一种可能的设计中,所述SCI包括第一指示域,其中,所述第一指示域用于指示所述其他终端设备的信息。
在一种可能的设计中,所述第二终端设备和所述第一终端设备进行单播通信,所述其他终端设备包括所述第一终端设备;
所述第一指示域的值为所述第一终端设备的源层二标识的M个高比特位;或者,
所述第一指示域的值为所述第一终端设备的目的层二标识的M个高比特位;或者,
所述第一指示域的值为所述第一终端设备的源层二标识的M个低比特位;或者,
所述第一指示域的值为所述第一终端设备的目的层二标识的M个低比特位;
其中,所述M为大于等于1的整数。
在一种可能的设计中,所述第二终端设备和第三终端设备进行单播通信,所述第三终端设备为和所述第一终端设备不同的终端设备,所述其他终端设备包括所述第三终端设备;
所述第一指示域的值为所述第三终端设备的源层二标识的M个高比特位;或者,
所述第一指示域的值为所述第三终端设备的目的层二标识的M个高比特位;或者,
所述第一指示域的值为所述第三终端设备的源层二标识的M个低比特位;或者,
所述第一指示域的值为所述第三终端设备的目的层二标识的M个低比特位;
其中,所述M为大于等于1的整数。
在一种可能的设计中,所述第二终端设备和所述第一终端设备对应的第一终端设备组进行组播通信,所述其他终端设备包括所述第一终端设备组中的终端设备;
所述第一指示域的值为所述第一终端设备组的组层二标识的M个高比特位;或者,
所述第一指示域的值为所述第一终端设备组的组层二标识的M个低比特位;
其中,所述M为大于等于1的整数。
在一种可能的设计中,所述第二终端设备和所述第三终端设备对应的第二终端设备组进行组播通信,所述其他终端设备包括所述第二终端设备组中的终端设备;
所述第一指示域的值为所述第二终端设备组的组层二标识的M个高比特位;或者,
所述第一指示域的值为所述第二终端设备组的组层二标识的M个低比特位;
其中,所述M为大于等于1的整数。
在一种可能的设计中,所述第一指示域用于指示不指定所述其他终端设备;
所述第一指示域的值为M个比特的第一预设值,其中,所述M为大于等于1的整数。
在一种可能的设计中,所述高层信令包括第二指示域,其中,所述第二指示域用于指示所述其他终端设备的信息。
在一种可能的设计中,所述第二终端设备和所述第一终端设备进行单播通信,所述其他终端设备包括所述第一终端设备;
所述第二指示域的值为所述第一终端设备的源层二标识;或者,
所述第二指示域的值为所述第一终端设备的目的层二标识。
在一种可能的设计中,所述第二终端设备和第三终端设备进行单播通信,所述第三终端设备为和所述第一终端设备不同的终端设备,所述其他终端设备包括所述第三终端设备;
所述第二指示域的值为所述第三终端设备的源层二标识;或者,
所述第二指示域的值为所述第三终端设备的目的层二标识。
在一种可能的设计中,所述第二终端设备和所述第一终端设备对应的第三终端设备组进行组播通信,所述其他终端设备包括所述第三终端设备组中的终端设备;
所述第二指示域的值为所述第三终端设备组的组层二标识。
在一种可能的设计中,所述第二终端设备和所述第三终端设备对应的第四终端设备组进行组播通信,所述其他终端设备包括所述第四终端设备组中的终端设备;
所述第二指示域的值为所述第四终端设备组的组层二标识。
在一种可能的设计中,所述第二指示域用于指示不指定所述其他终端设备;
所述第二指示域的值为R比特的第二预设值,其中,所述R为所述第二指示域的比特数。
在一种可能的设计中,所述指示域的值为X个比特的状态值,所述X为大于等于1的整数,其中,所述状态值包括至少包括如下中的任一种:第一状态值、第二状态值、第三状态值;
所述第一状态值用于指示所述其他终端设备包括所述第一终端设备或者所述第一终端设备对应的终端设备组中的终端设备;
所述第二状态值用于指示所述其他终端设备包括所述第三终端设备或者所述第三终端设备对应的终端设备组中的终端设备;
所述第三状态值用于指示不存在指定所述其他终端设备。
在一种可能的设计中,所述指示信息为两个阶段的辅链路控制信息,所述指示域包括在所述辅链路控制信息的第二阶段信息中。
在一种可能的设计中,所述指示信息为单阶段的辅链路控制信息,所述指示域包括在所述辅链路控制信息中。
在一种可能的设计中,所述指示信息中还包括资源位置指示域,其中,所述资源位置指示域用于指示所述第一资源所在的时频域位置。
在一种可能的设计中,所述指示信息中还包括所述第一终端设备的源层一标识和所述第二终端设备的目的层一标识。
在一种可能的设计中,所述第一资源为允许所述第二终端设备进行数据传输的辅链路传输资源;或者
所述第一资源为不允许所述第二终端设备进行数据传输的辅链路传输资源。
第三方面,本申请实施例提供一种辅链路资源处理设备,包括:
存储器,用于存储程序;
处理器,用于执行所述存储器存储的所述程序,当所述程序被执行时,所述处理器用于执行如上第一方面以及第一方面各种可能的设计中任一所述的方法。
第四方面,本申请实施例提供一种计算机可读存储介质,包括指令,当其在计算机上运行时,使得计算机执行如上第一方面以及第一方面各种可能的设计中任一所述的方法。
本申请实施例提供一种辅链路资源处理方法及装置,该方法包括:第二终端设备接收第一终端设备发送的指示信息,其中,指示信息用于指示第一资源。第二终端设备根据第一资源,确定第二终端设备的辅链路传输资源,其中,辅链路传输资源用于第二终端设备和其他终端设备进行数据传输。第二终端设备通过接收第一终端设备发送的指示信息,以根据指示信息指示的第一资源确定和其他终端设备进行数据传输的辅链路传输资源,从而能够有效的避免隐藏节点问题和半双工问题,以避免资源碰撞,提升传输的可靠性。
附图说明
图1为本申请实施例提供的一种V2X通信的场景示意图;
图2为本申请实施例提供的另一种V2X通信的场景示意图;
图3为本申请实施例提供的隐藏节点的示意图;
图4为本申请实施例提供的用户间协作资源选择的示意图;
图5为本申请实施例提供的辅链路资源处理方法的流程图;
图6为本申请实施例提供的第二终端设备和第一终端设备进行单播通信时的实现示意图;
图7为本申请实施例提供的第二终端设备和第一终端设备的终端设备组进行组播通信时的实现示意图;
图8为本申请实施例提供的第二终端设备和第三终端设备进行单播通信时的实现示意图;
图9为本申请实施例提供的第二终端设备和第三终端设备的终端设备组进行组播通信时的实现示意图;
图10为本申请实施例提供的第二终端设备进行广播通信的实现示意图;
图11为本申请实施例提供的辅链路资源处理装置的结构示意图;
图12为本申请实施例提供的辅链路资源处理设备的硬件结构示意图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
为了下述各实施例的描述清楚简洁,首先给出相关技术的简要介绍:
车与万物(vehicle to X,V2X)通信是协议第16(Release 16,R16)版本的一个关键技术方向,NR V2X作为长期演进(Long Term Evolution,LTE)V2X的增强,是使能车联网的关键技术手段。
示例性的,V2X通信例如可以包括车与车通信(Vehicle-to-Vehicle,V2V)、车与路侧基础设施通信(Vehicle-to-Infrastructure,V2I)、车与人通信(Vehicle to People,V2P),以及车与应用服务器通信(Vehicle-to-Network,V2N)等。本申请实施例对于V2X的具体通信场景不进行限定,其可以根据实际需求进行选择和扩展。
在V2X通信中,V2X设备之间通过辅链路(sidelink)进行辅链路通信,其中,sidelink还可以称为旁链路、副链路、侧链路和边链路等。
在一种可能的实现方式中,辅链路终端和辅链路终端之间可以使用网络设备配置的资源,通过辅链路直接进行通信,比如上网、打电话、位置信息的通知等安全等方面的信令交互,不需要经过网络设备中转。
针对V2X通信,有两种资源分配方式,下面分别结合图1和图2进行介绍,图1为本申请实施例提供的一种V2X通信的场景示意图,图2为本申请实施例提供的另一种V2X通信的场景示意图。
第一种方式是调度资源分配(scheduled resource allocation)方式,该种方式 中,由基站为V2X设备配置用于辅链路通信的资源,例如可以参见图1,基站可以基于终端设备发送的请求消息,动态或半动态的为终端设备调度资源。这样,终端设备可以使用基站调度的资源进行通信。该方式主要应用于LTE V2X通信中的模式3(mode3)和NR V2X通信中的模式1(mode 1)。
第二种方式是基于感知的资源选择方式,该方式不需要基站对资源进行调度,如图2所示,在基于感知的资源选择方式中,基站例如可以通过系统消息块(system information block,SIB)消息或无线资源控制(radio resource control,RRC)信令为终端设备配置资源池,或者预配置资源池。这样,终端设备可以从资源池中获取资源以进行通信。
具体的,V2X设备可以在资源感知窗内接收其他V2X设备发送的辅链路控制信道(physical sidelink control channel,PSCCH),根据PSCCH确定出其他V2X设备的预留资源,然后从资源选择窗中排除预留资源,从剩余可用的资源中选择出用于辅链路通信的资源的过程。该方式主要应用于LTE V2X通信中的模式4(mode4)和NR V2X通信中的模式2(mode2)。基于感知的资源选择方式中,
本申请实施例描述的系统架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案,并不构成对于本申请实施例提供的技术方案的限定,本领域普通技术人员可知,随着网络架构的演变和新业务场景的出现,本申请实施例提供的技术方案对于类似的技术问题,同样适用。
目前,在LTE V2X通信和NR V2X通信中,由于半双工(half duplex)原因,导致V2X设备在发送辅链路数据的同时,无法接收其他V2X设备发送的PSCCH,进而导致V2X设备无法针对发生半双工的时隙排除资源选择窗口内其他V2X设备的预留资源。
此时,LTE V2X通信中引入了排除所有可能预留资源的方案,即当V2X设备在资源感知窗内的某个时隙发送辅链路数据时,根据该时隙和预留资源的所有可能预留周期得到一组时隙,对于该组时隙内落入资源选择窗口的时隙,将排除该些时隙上的所有频域资源。
然而,NR V2X通信支持更灵活的预留周期,若继续沿用上述LTE V2X通信中排除预留资源的方法,则将导致资源选择窗口内的资源过少,或无资源可选,进而导致NR V2X通信资源效率降低,通信失败。
综上所述,在感知的资源选择方式中,上述提到的半双工问题会导致通信资源利用效率降低。
除了上述提到的半双工问题,终端设备在基于感知的资源选择方式获取传输资源时,还会遇到隐藏节点问题(hidden-node problem),暴露节点问题(exposed-node problem),以及其他原因导致的连续资源碰撞,这些都将影响基于感知的资源选择方式的资源利用效率,及传输可靠性。
此处结合图3对隐藏节点进行简单介绍,图3为本申请实施例提供的隐藏节点的示意图。
如图3所示,假设当前存在3个终端设备,分别是终端设备1、终端设备2、终端设备3.
其中,终端设备1向终端设备2传输数据,终端设备3也向终端设备2传输数据, 但是因为终端设备1和终端设备2不在彼此的传输范围内,因此也就无法感知到对方,从而可能会出现终端设备1和终端设备3同时向终端设备2发送数据的情况,其中,来自终端设备1和终端设备3的数据会在终端设备2处发生冲突,从而导致数据丢失,网络性能下降,其中,终端设备1和终端设备2就被称为隐藏节点,这种因为传送距离而发生误判的问题称为隐藏节点问题。
为了解决上述介绍的一系列问题,目前计划将用户间协作机制引入NR V2X通信中的模式2(mode2),其中用户间协作机制是指一个终端设备向另外一个终端设备发送一组资源信息,以帮助其进行资源选择。
本申请实施例提供的辅链路资源处理方法,具体提出了第一终端设备如何向第二终端设备指示资源信息,下面结合具体的实施例对本申请提供的辅链路资源处理方法进行介绍。
首先结合图4对本申请中的用户间协作资源选择进行简单说明,图4为本申请实施例提供的用户间协作资源选择的示意图。
如图4所示,第二终端设备采用NR V2X通信中的mode 2选择辅链路传输资源,向其他终端设备发送辅链路数据,其他终端设备可以为一个或多个,第二终端设备可以通过单播,组播,或广播的方式向第三终端设备发送,在本实施例中,其他终端设备是指和第二终端设备进行数据传输的任意一个或多个终端设备。
其中,第二终端设备确定的辅链路传输资源例如可以包括:第二终端设备通过自身感知获取辅链路传输资源,和/或,第二终端设备通过用户间协作从第一终端设备处获得一组辅链路资源,其中第一终端设备可以通过感知的方法为第二终端设备确定一组资源,该组资源可以为推荐第一终端设备使用的,或不推荐第一终端设备使用的。
第二终端设备在选择最终用于传输的辅链路传输资源时,例如可以综合考虑通过自身感知获取辅链路传输资源集合和/或通过用户间协作从第一终端设备处获得一组辅链路资源,选择最终用于传输的辅链路传输资源取决于第二终端设备的实现。
基于图4介绍的内容,下面结合图5对本申请实施例提供的方法进行详细介绍,图5为本申请实施例提供的辅链路资源处理方法的流程图。
如图5所示,该方法包括:
S501、第二终端设备接收第一终端设备发送的指示信息,其中,指示信息用于指示第一资源。
在本实施例中,第二终端设备为需要进行数据传输的终端设备,第一终端设备为向第二终端设备指示资源的终端设备。
其中,第二终端设备可以接收第一终端设备发送的指示信息,其中,指示信息用于指示第一资源。
在一种可能的实现方式中,第一终端设备可以为第二终端设备指示允许第二终端设备使用的第一资源,或者可以理解为建议使用的;
在另一种可能的实现方式中,第一终端设备可以为第二终端设备指示不允许第二终端设备使用的第一资源,或者可以理解为不建议使用的。
本实施例对第一终端设备指示的第一资源的具体实现方式不做特别限制,其可以具体取决于第一终端设备的实现。
S502、第二终端设备根据第一资源,确定第二终端设备的辅链路传输资源,其中,辅链路传输资源用于第二终端设备和其他终端设备进行数据传输。
在第二终端设备接收到指示信息之后,就可以根据指示信息所指示的第一资源,确定第二终端设备的用于数据传输的辅链路传输资源。
在一种可能的实现方式中,若第一资源为第一终端设备允许第二终端设备使用的资源,则第二终端设备例如可以确定辅链路传输资源为第一资源,从而在第一资源上进行数据传输;
在另一种可能的实现方式中,若第一资源为第一终端设备不允许第二终端设备使用的资源,则第二终端设备例如可以将第一资源排除,从而在第一资源之外的资源进行选择,其中,选择的具体实现方式可以参照现有的人一种可能的实现方式,本实施例对此不做特别限制,则此时第二终端设备可以将在第一资源之外选择的资源确定为辅链路传输资源,从而在除第一资源之外的资源上进行数据传输。
在本实施例中,第二终端设备根据指示信息确定的辅链路传输资源是用于和其他终端设备进行数据传输的,其他终端设备是第二终端设备进行数据传输的终端设备,其可以是第二终端设备之外的任意一个终端设备。
在一种可能的实现方式中,其他终端设备可以为指示的一个或者多个终端设备,比如说当前确定其他终端设备为第一终端设备,那么此时第一终端设备发送的指示信息,就是用于指示第二终端设备在和第一终端设备进行数据传输的时候,允许使用的资源或者不允许使用的资源,可以理解的是,此时指示信息指示的第一资源仅对第一终端设备有效,例如当前还存在第三终端设备,那么此时指示信息指示的第一资源对第三终端设备是无效的。
或者,其他终端设备还可以为第三终端设备,也就是第一终端设备和第二终端设备之外的终端设备,其实现方式与上述介绍的类似,只是当前终端设备指示的第一资源仅对第三终端设备有效,其具体为第一终端设备在和第三终端设备进行数据传输时,允许使用的资源或者不允许使用的资源,在第一终端设备和第三终端设备之外的终端设备进行通信的时候,无需参考当前的指示信息指示的第一资源。
或者,指示信息还可以不具体指示终端设备,则此时其他终端设备是除了第二终端设备之外的任意一个终端设备,也就是说无论当前第二终端设备和哪个终端设备进行通信,都需要参考当前指示信息指示的第一资源。
本实施例对其他终端设备的具体实现方式不做特别限制,其可以根据实际需求进行相应的选择。
在本实施例中,第二终端设备通过接收第一终端设备发送的指示信息,以根据指示信息指示的第一资源确定和其他终端设备进行数据传输的辅链路传输资源,能够有效的避免隐藏节点问题和半双工问题。
例如针对隐藏节点问题,假设当前第一终端设备为其他终端设备,第二终端设备和第三终端设备互为隐藏节点,那么第二终端设备和第三终端设备互相感知不到对方,可能同时向第一终端设备发送数据,在这种情况下,第一终端设备可以同时感知到第二终端设备和第三终端设备,那么第一终端设备例如就可以向第二终端设备发送指示信息,以指示第二终端设备不要在和第三终端设备冲突的第一资源上发送,或者指示 第二终端设备在和第三终端设备不冲突的第一资源上发送,从而能够有效解决隐藏节点问题,以及当其他终端设备为第三终端设备时,实现方式类似。
以及针对半双工问题,第二终端设备通过接收第一终端设备发送的指示信息,从而根据指示信息确定辅链路传输资源,从而能够有效避免第二终端设备无法针对发生半双工的时隙排除资源选择窗口内其他终端设备的预留资源的问题。
本申请实施例提供的辅链路资源处理方法,包括:第二终端设备接收第一终端设备发送的指示信息,其中,指示信息用于指示第一资源。第二终端设备根据第一资源,确定第二终端设备的辅链路传输资源,其中,辅链路传输资源用于第二终端设备和其他终端设备进行数据传输。第二终端设备通过接收第一终端设备发送的指示信息,以根据指示信息指示的第一资源确定和其他终端设备进行数据传输的辅链路传输资源,从而能够有效的避免隐藏节点问题和半双工问题,以避免资源碰撞,提升传输的可靠性。
在上述实施例的基础上,下面对本申请实施例分情况进行进一步的详细说明,在本实施例中,上述介绍的其他终端设备例如可以为上述介绍的第一终端设备,或者还可以为第三终端设备,或者还可以为不指定的终端设备,以及在本实施例中,第二终端设备可以进行单播通信,还可以进行组播通信,则对应的其他终端设备可以是一个终端设备,还可以是多个终端设备,下面对此处各种可能的实现方式分别进行说明。
首先结合图6对第二终端设备和第一终端设备进行单播通信的实现方式进行介绍,图6为本申请实施例提供的第二终端设备和第一终端设备进行单播通信时的实现示意图。
在本实施例中,第二终端设备和第一终端设备进行单播通信,参见图6,第一终端设备可以接收第二终端设备发送的辅链路数据,以及第一终端设备可以向第二终端设备发送指示信息,以指示一组第一资源。
其中,第一资源可以为第二终端设备向第一终端设备发送辅链路数据时,第一终端设备所期待第二终端设备使用的资源集合,还可以为第一终端设备不期待第二终端设备使用的资源集合。因此本实施例主要解决第二终端设备与第一终端设备进行通信时,遇到的隐藏节点问题,在本实施例中其他终端设备就限制为第一终端设备。
在一种可能的实现方式中,本实施例中的指示信息可以为辅链路控制信息(Sidelink control information,SCI),下面对本实施例中指示信息为SCI的实现方式进行介绍。
具体的,第一终端设备通过SCI指示第一资源,其中,SCI例如可以包括第一指示域,其中,第一指示域用于指示其他终端设备的信息。
在一种可能的实现方式中,第一指示域的取值可以是根据第一终端设备的标识得到的。
在当前实施例中,其他终端设备为第一终端设备,则第一终端设备可以将第一指示域的值设置为第一终端设备的源(source)层二标识(layer-2ID)或目的(destination)层二标识的高位比特(Most Significant Bit,MSB)或低位比特(Least Significant Bit,LSB)的M个比特,其中,M为大于等于1的整数,M个取值范围为 1-24。
也就是说,当指示信息为SCI,并且其他终端设备是第一终端设备时,SCI中的第一指示域的值可以为如下中的任一种:
第一终端设备的源层二标识的M个高比特位;或者,
第一终端设备的目的层二标识的M个高比特位;或者,
第一终端设备的源层二标识的M个低比特位;或者,
第一终端设备的目的层二标识的M个低比特位。
在实际实现过程中,第一指示域的值具体设置为哪一种实现方式,可以取决于第一终端设备的选择,本实施例对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取该第一指示域,可以确定其他终端设备为第一终端设备,则在第二终端设备和第一终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在指示信息为SCI的实现方式下,因为SCI是物理层信令,为了提高信令的可靠性,希望SCI的比特数尽可能的少,因此在本实施例中具体是取第一终端设备的标识的M个比特位作为第一指示域的取值,因为第二终端设备需要和第一终端设备进行通信,因此仅根据M个比特位也可以确定第一终端设备。
在另一种可能的实现方式中,第一指示域的取值可以为X比特的状态值,其中,X为大于等于1的整数。
可以理解的是,当前第一指示域包括X比特信息,共有2 X的状态值:第一状态值,第二状态值,第三状态值,……,第2 X状态值,其中每个状态值可以指示一种其他终端设备。
假设当前第一状态值用于指示其他终端设备包括第一终端设备,则第一终端设备例如可以将第一指示域的取值设置为第一状态值,在实际实现过程中,各个状态值的具体实现方式可以根据实际需求进行选择,此处对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取第一指示域,可以确定其他终端设备为第一终端设备,则在第二终端设备和第一终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
在上述介绍的SCI的取值的两种可能的实现方式中,指示信息可以采用两个阶段辅链路控制信息格式,即第一阶段辅链路控制信息(1st stage SCI)和第二阶段辅链路控制信息(2nd stage SCI)指示第一资源。此时,第一指示域可以包括在第二阶段辅链路控制信息格式中。
或者,指示信息还可以采用单阶段辅链路控制信息格式,此时,第一指示域包括在单辅链路控制信息格式中。
在本实施例中,指示信息还可以包括资源位置指示域,资源位置指示域用于指示第一资源所在的时频域位置。
以及,指示信息还可以包括第一终端设备的源(source)层一标识(layer-1ID)和第二终端设备的目的(destination)层一标识(layer-1ID),用来指示当前的指示信息是由第一终端设备发送给第二终端设备的。
上述介绍的是指示信息为SCI的实现方式,在另一种可能的实现方式中,指示信 息还可以为高层信令,其中,高层信令例如可以为媒体访问控制层控制元素(Media Access ControlControl Element,MAC CE)或无线资源控制(Radio Resource Control,RRC),由辅链路数据信道(Physical Sidelink Shared Channel,PSSCH)承载。
具体的,第一终端设备通过高层信令指示第一资源,其中,高层信令例如可以包括第二指示域,其中,第二指示域用于指示其他终端设备的信息。
在一种可能的实现方式中,第二指示域的取值可以是根据第一终端设备的标识得到的。
在当前实施例中,其他终端设备为第一终端设备,则第一终端设备可以将第一指示域的值设置为第一终端设备的源层二标识或目的层二标识(layer-2ID),表明当前的其他终端设备为第一终端设备。
也就是说,当指示信息为高层信令,并且其他终端设备是第一终端设备时,高层信令中的第二指示域的值可以为如下中的任一种:
第一终端设备的源层二标识;或者,
第一终端设备的目的层二标识。
第二终端设备在收到第一终端设备发送的高层信令时,通过读取该第二指示域,可以确定其他终端设备为第一终端设备,则在第二终端设备和第一终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在指示信息为高层信令的实现方式下,因为高层信令是用数据信道承载的,所以对比特数没有特殊的要求,此时为了提升性能,可以在高层信令的第二指示域中包括完整的层二标识。
在另一种可能的实现方式中,第二指示域的取值可以为X比特的状态值,其中,X为大于等于1的整数。
可以理解的是,当前第二指示域包括X比特信息,共有2 X的状态值:第一状态值,第二状态值,第三状态值,……,第2 X状态值,其中每个状态值可以指示一种其他终端设备。
假设当前第一状态值用于指示其他终端设备包括第一终端设备,则第一终端设备例如可以将第一指示域的取值设置为第一状态值,在实际实现过程中,各个状态值的具体实现方式可以根据实际需求进行选择,此处对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取第二指示域,可以确定其他终端设备为第一终端设备,则在第二终端设备和第一终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在本实施例中,第二终端设备仅在和第一终端设备传输辅链路数据的时候,会参考指示信息指示的第一资源,在和第一终端设备之外的终端设备进行传输的时候无需参考当前的指示信息。
综上所示,在本实施例中,第二终端设备和第一终端设备进行单播通信,第一终端设备向第二终端设备发送指示信息指示第一资源,从而指示在第二终端设备和第一终端设备进行通信的时候,期望第二终端设备使用的资源或不期望第二终端设备使用的资源,通过第一终端设备的指示,可以有效避免第二终端设备在进行数据传输时,可能遇到的隐藏节点的问题,有效避免了资源碰撞,提升传输的可靠性。
下面结合图7对第二终端设备和第一终端设备对应的终端设备组进行组播通信的实现方式进行介绍,图7为本申请实施例提供的第二终端设备和第一终端设备的终端设备组进行组播通信时的实现示意图。
在本实施例中,第二终端设备与第一终端设备对应的终端设备组进行组播通信,参见图7,终端设备组中例如可以包括第一终端设备1、第一终端设备2、第一终端设备3,其中,第一终端设备组的各个第一终端设备可以接收第二终端设备发送的辅链路数据,以及第一终端设备组中的一个或多个第一终端设备可以分别向第二终端设备发送指示信息,以指示一组第一资源。
其中,第一资源可以为第二终端设备向第一终端设备对应的终端设备组发送辅链路数据时,第一终端设备所期待第二终端设备使用的资源集合,还可以为第一终端设备不期待第二终端设备使用的资源集合。因此本实施例主要解决第二终端设备与第一终端设备对应的终端设备组进行通信时,遇到的隐藏节点问题,在本实施例中其他终端设备就限制为第三终端设备对应的终端设备组。
在一种可能的实现方式中,本实施例中的指示信息可以为SCI,下面对本实施例中指示信息为SCI的实现方式进行介绍。
具体的,第一终端设备通过SCI指示第一资源,其中,SCI例如可以包括第一指示域,其中,第一指示域用于指示其他终端设备的信息,在当前实现方式中,发送第一资源的第一终端设备可以为第一终端设备组中的任一个第一终端设备。
在一种可能的实现方式中,第一指示域的取值可以是根据第一终端设备组的组标识得到的。
在当前实施例中,假设第一终端设备对应第一终端设备组,则其他终端设备为第一终端设备组中的终端设备,则第一终端设备可以将第一指示域的值设置为第一终端设备组进行组播通信的组(group)层二标识(layer-2ID)的高位比特(MSB)或低位比特(LSB)中的M个比特。M的取值范围为1-24。
也就是说,当指示信息为SCI,并且其他终端设备是第一终端设备组中的终端设备时,SCI中的第一指示域的值可以为如下中的任一种:
第一终端设备组的组层二标识的M个高比特位;或者,
第一终端设备组的组层二标识的M个低比特位。
在实际实现过程中,第一指示域的值具体设置为哪一种实现方式,可以取决于第一终端设备的选择,本实施例对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取该第一指示域,可以确定其他终端设备为第一终端设备组中的终端设备,则在第二终端设备和第一终端设备组中的终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在指示信息为SCI的实现方式下,因为SCI是物理层信令,为了提高信令的可靠性,希望SCI的比特数尽可能的少,因此在本实施例中具体是取第一终端设备组的组标识的M个比特位作为第一指示域的取值,因为第二终端设备需要和第一终端设备组进行通信,因此仅根据M个比特位也可以确定第一终端设备组。
在另一种可能的实现方式中,第一指示域的取值可以为X比特的状态值,其中,X为大于等于1的整数。
可以理解的是,当前第一指示域包括X比特信息,共有2 X的状态值:第一状态值,第二状态值,第三状态值,……,第2 X状态值,其中每个状态值可以指示一种其他终端设备。
假设当前第一状态值用于指示其他终端设备包括第一终端设备组中的终端设备,则第一终端设备例如可以将第一指示域的取值设置为第一状态值,在实际实现过程中,各个状态值的具体实现方式可以根据实际需求进行选择,此处对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取第一指示域,可以确定其他终端设备为第一终端设备组中的终端设备,则在第二终端设备和第一终端设备组中的终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
在上述介绍的SCI的取值的两种可能的实现方式中,指示信息可以采用两个阶段辅链路控制信息格式,即第一阶段辅链路控制信息(1st stage SCI)和第二阶段辅链路控制信息(2nd stage SCI)指示第一资源。此时,第一指示域可以包括在第二阶段辅链路控制信息格式中。
或者,指示信息还可以采用单阶段辅链路控制信息格式,此时,第一指示域包括在单辅链路控制信息格式中。
在本实施例中,指示信息还可以包括资源位置指示域,资源位置指示域用于指示第一资源所在的时频域位置。
以及,指示信息还可以包括第一终端设备的源(source)层一标识(layer-1ID)和第二终端设备的目的(destination)层一标识(layer-1ID),用来指示当前的指示信息是由第一终端设备发送给第二终端设备的。
上述介绍的是指示信息为SCI的实现方式,在另一种可能的实现方式中,指示信息还可以为高层信令,其中,高层信令例如可以为MAC CE或RRC,由PSSCH承载。
假设在本实施例中第一终端设备对应的是第四终端设备组,则当前第二终端设备与第四终端设备组进行组播通信。
具体的,第一终端设备通过高层信令指示第一资源,其中,高层信令例如可以包括第二指示域,其中,第二指示域用于指示其他终端设备的信息。
在一种可能的实现方式中,第二指示域的取值可以是根据第四终端设备组的组标识得到的。
在当前实施例中,其他终端设备为第四终端设备组中的第一终端设备,则第一终端设备可以将第一指示域的值设置为第四终端设备组进行组播通信的组层二标识,表明当前的其他终端设备为第四终端设备组中的终端设备。
也就是说,当指示信息为高层信令,并且其他终端设备是第四终端设备组中的终端设备时,高层信令中的第二指示域的值可以为:
第四终端设备组的组层二标识。
第二终端设备在收到第一终端设备发送的高层信令时,通过读取该第二指示域,可以确定其他终端设备为第四终端设备组中的终端设备,则在第二终端设备和第四终 端设备组中的终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在指示信息为高层信令的实现方式下,因为高层信令是用数据信道承载的,所以对比特数没有特殊的要求,此时为了提升性能,可以在高层信令的第二指示域中包括完整的层二标识。
在另一种可能的实现方式中,第二指示域的取值可以为X比特的状态值,其中,X为大于等于1的整数。
可以理解的是,当前第二指示域包括X比特信息,共有2 X的状态值:第一状态值,第二状态值,第三状态值,……,第2 X状态值,其中每个状态值可以指示一种其他终端设备。
假设当前第一状态值用于指示其他终端设备包括第一终端设备对应的设备组,则第一终端设备例如可以将第一指示域的取值设置为第一状态值,在实际实现过程中,各个状态值的具体实现方式可以根据实际需求进行选择,此处对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取第二指示域,可以确定其他终端设备为第四终端设备组中的终端设备,则在第二终端设备和第四终端设备组中的终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在本实施例中,第二终端设备仅在和第一终端设备对应的终端设备组传输辅链路数据的时候,会参考指示信息指示的第一资源,在和第一终端设备对应的设备组之外的终端设备进行传输的时候无需参考当前的指示信息。
以及值得说明的是,本实施例中的终端设备组中可以包括多个第一终端设备,其中每个第一终端设备都可以向第二终端设备发送指示信息,以及每个第一终端设备可以分别指示各自的第一资源,则第二终端设备在和第一终端设备对应的设备组进行组播通信的时候,需要参考各个第一终端设备发送的第一资源,例如当前第一终端设备1指示不能在资源A上进行数据传输,以及第一终端设备2指示不能在资源B上进行数据传输,则第二终端设备在和第一终端设备对应的终端设备组进行数据传输的时候,就在资源A和资源B上都不能进行传输。
综上所示,在本实施例中,第二终端设备和第一终端设备对应的终端设备组进行组播通信,第一终端设备向第二终端设备发送指示信息指示第一资源,从而指示在第二终端设备和第一终端设备对应的终端设备组进行通信的时候,期望第二终端设备使用的资源或不期望第二终端设备使用的资源,通过第一终端设备的指示,可以有效避免第二终端设备在进行数据传输时,可能遇到的隐藏节点的问题,有效避免了资源碰撞,提升传输的可靠性。
下面结合图8对第二终端设备和第三终端设备进行单播通信的实现方式进行介绍,图8为本申请实施例提供的第二终端设备和第三终端设备进行单播通信时的实现示意图。
在本实施例中,第二终端设备和第三终端设备进行单播通信,参见图8,第三终端设备可以接收第二终端设备发送的辅链路数据,以及第一终端设备可以向第二终端 设备发送指示信息,以指示一组第一资源。
在本实施例中,第三终端设备是和第二终端设备不同的终端设备,第三终端设备的具体萱蕚可以根据实际需求进行选择,本实施例对此不做限定。
其中,第一资源可以为第二终端设备向第三终端设备发送辅链路数据时,第一终端设备根据其感知结果,建议第二终端设备使用的资源集合,还可以为不建议第二终端设备使用的资源集合。因此本实施例主要解决第二终端设备与第三终端设备进行通信时,遇到的隐藏节点问题,在本实施例中其他终端设备就限制为第三终端设备。
在一种可能的实现方式中,本实施例中的指示信息可以为SCI,下面对本实施例中指示信息为SCI的实现方式进行介绍。
具体的,第一终端设备通过SCI指示第一资源,其中,SCI例如可以包括第一指示域,其中,第一指示域用于指示其他终端设备的信息。
在一种可能的实现方式中,第一指示域的取值可以是根据第三终端设备的标识得到的。
在当前实施例中,其他终端设备为第三终端设备,则第一终端设备可以将第一指示域的值设置为第三终端设备的源(source)层二标识(layer-2ID)或目的(destination)层二标识的高位比特(Most Significant Bit,MSB)或低位比特(Least Significant Bit,LSB)的M个比特,其中,M为大于等于1的整数,M个取值范围为1-24。
其中,第三终端设备的源层二标识或目的层二标识可以由第二终端设备提前告知第一终端设备。
也就是说,当指示信息为SCI,并且其他终端设备是第三终端设备时,SCI中的第一指示域的值可以为如下中的任一种:
第三终端设备的源层二标识的M个高比特位;或者,
第三终端设备的目的层二标识的M个高比特位;或者,
第三终端设备的源层二标识的M个低比特位;或者,
第三终端设备的目的层二标识的M个低比特位。
在实际实现过程中,第一指示域的值具体设置为哪一种实现方式,可以取决于第一终端设备的选择,本实施例对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取该第一指示域,可以确定其他终端设备为第三终端设备,则在第二终端设备和第三终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在指示信息为SCI的实现方式下,因为SCI是物理层信令,为了提高信令的可靠性,希望SCI的比特数尽可能的少,因此在本实施例中具体是取第一终端设备的标识的M个比特位作为第一指示域的取值,因为第二终端设备需要和第三终端设备进行通信,因此仅根据M个比特位也可以确定第三终端设备。
在另一种可能的实现方式中,第一指示域的取值可以为X比特的状态值,其中,X为大于等于1的整数。
可以理解的是,当前第一指示域包括X比特信息,共有2 X的状态值:第一状态值,第二状态值,第三状态值,……,第2 X状态值,其中每个状态值可以指示一种其他终 端设备。
假设当前第二状态值用于指示其他终端设备包括第三终端设备,则第一终端设备例如可以将第一指示域的取值设置为第二状态值,在实际实现过程中,各个状态值的具体实现方式可以根据实际需求进行选择,此处对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取第一指示域,可以确定其他终端设备为第三终端设备,则在第二终端设备和第三终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
在上述介绍的SCI的取值的两种可能的实现方式中,指示信息可以采用两个阶段辅链路控制信息格式,即第一阶段辅链路控制信息(1st stage SCI)和第二阶段辅链路控制信息(2nd stage SCI)指示第一资源。此时,第一指示域可以包括在第二阶段辅链路控制信息格式中。
或者,指示信息还可以采用单阶段辅链路控制信息格式,此时,第一指示域包括在单辅链路控制信息格式中。
在本实施例中,指示信息还可以包括资源位置指示域,资源位置指示域用于指示第一资源所在的时频域位置。
以及,指示信息还可以包括第一终端设备的源(source)层一标识(layer-1 ID)和第二终端设备的目的(destination)层一标识(layer-1ID),用来指示当前的指示信息是由第一终端设备发送给第二终端设备的。
上述介绍的是指示信息为SCI的实现方式,在另一种可能的实现方式中,指示信息还可以为高层信令,其中,高层信令例如可以为MAC CE或RRC,由PSSCH承载。
具体的,第一终端设备通过高层信令指示第一资源,其中,高层信令例如可以包括第二指示域,其中,第二指示域用于指示其他终端设备的信息。
在一种可能的实现方式中,第二指示域的取值可以是根据第三终端设备的标识得到的。
在当前实施例中,其他终端设备为第三终端设备,则第一终端设备可以将第一指示域的值设置为第三终端设备的源层二标识或目的层二标识(layer-2ID),表明当前的其他终端设备为第三终端设备。
也就是说,当指示信息为高层信令,并且其他终端设备是第三终端设备时,高层信令中的第二指示域的值可以为如下中的任一种:
第三终端设备的源层二标识;或者,
第三终端设备的目的层二标识。
第二终端设备在收到第一终端设备发送的高层信令时,通过读取该第二指示域,可以确定其他终端设备为第三终端设备,则在第二终端设备和第三终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在指示信息为高层信令的实现方式下,因为高层信令是用数据信道承载的,所以对比特数没有特殊的要求,此时为了提升性能,可以在高层信令的第二指示域中包括完整的层二标识。
在另一种可能的实现方式中,第二指示域的取值可以为X比特的状态值,其中,X为大于等于1的整数。
可以理解的是,当前第二指示域包括X比特信息,共有2 X的状态值:第一状态值,第二状态值,第三状态值,……,第2 X状态值,其中每个状态值可以指示一种其他终端设备。
假设当前第二状态值用于指示其他终端设备包括第三终端设备,则第一终端设备例如可以将第一指示域的取值设置为第二状态值,在实际实现过程中,各个状态值的具体实现方式可以根据实际需求进行选择,此处对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取第二指示域,可以确定其他终端设备为第三终端设备,则在第二终端设备和第三终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在本实施例中,第二终端设备仅在和第三终端设备传输辅链路数据的时候,会参考指示信息指示的第一资源,在和第三终端设备之外的终端设备进行传输的时候无需参考当前的指示信息。
综上所示,在本实施例中,第二终端设备和第三终端设备进行单播通信,第一终端设备向第二终端设备发送指示信息指示第一资源,从而指示在第二终端设备和第三终端设备进行通信的时候,第一终端设备根据其感知结果,推荐第二终端设备使用的资源或不推荐第二终端设备使用的资源,通过第一终端设备的指示,可以有效避免第二终端设备在进行数据传输时,可能遇到的隐藏节点的问题,有效避免了资源碰撞,提升传输的可靠性。
下面结合图9对第二终端设备和第三终端设备对应的终端设备组进行组播通信的实现方式进行介绍,图9为本申请实施例提供的第二终端设备和第三终端设备的终端设备组进行组播通信时的实现示意图。
在本实施例中,第二终端设备与第三终端设备对应的终端设备组进行组播通信,参见图9,终端设备组中例如可以包括第三终端设备1、第三终端设备2、第三终端设备3,其中,终端设备组的各个第三终端设备可以接收第二终端设备发送的辅链路数据,以及第一终端设备可以向第二终端设备发送指示信息,以指示一组第一资源。
其中,第一资源可以为第二终端设备向第三终端设备对应的终端设备组组发送辅链路数据时,第一终端设备建议第二终端设备使用的资源集合,还可以为第一终端设备不建议第二终端设备使用的资源集合。因此本实施例主要解决第二终端设备与第三终端设备对应的终端设备组进行通信时,遇到的隐藏节点问题,在本实施例中其他终端设备就限制为第三终端设备对应的终端设备组。
在一种可能的实现方式中,本实施例中的指示信息可以为SCI,下面对本实施例中指示信息为SCI的实现方式进行介绍。
具体的,第一终端设备通过SCI指示第一资源,其中,SCI例如可以包括第一指示域,其中,第一指示域用于指示其他终端设备的信息。
在一种可能的实现方式中,第一指示域的取值可以是根据第一终端设备组的组标识得到的。
在当前实施例中,假设第三终端设备对应第二终端设备组,则其他终端设备为第二终端设备组中的终端设备,则第一终端设备可以将第一指示域的值设置为第二终端 设备组进行组播通信的组层二标识的高位比特(MSB)或低位比特(LSB)中的M个比特。M的取值范围为1-24。
其中,第二终端设备与第三终端设备的终端设备组进行组播通信的组层二标识可以由第二终端设备提前告知第一终端设备。
也就是说,当指示信息为SCI,并且其他终端设备是第二终端设备组中的第三终端设备时,SCI中的第一指示域的值可以为如下中的任一种:
第二终端设备组的组层二标识的M个高比特位;或者,
第二终端设备组的组层二标识的M个低比特位。
在实际实现过程中,第一指示域的值具体设置为哪一种实现方式,可以取决于第一终端设备的选择,本实施例对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取该第一指示域,可以确定其他终端设备为第二终端设备组中的终端设备,则在第二终端设备和第二终端设备组中的终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在指示信息为SCI的实现方式下,因为SCI是物理层信令,为了提高信令的可靠性,希望SCI的比特数尽可能的少,因此在本实施例中具体是取第一终端设备组的组标识的M个比特位作为第一指示域的取值,因为第二终端设备需要和第二终端设备组进行通信,因此仅根据M个比特位也可以确定第二终端设备组。
在另一种可能的实现方式中,第一指示域的取值可以为X比特的状态值,其中,X为大于等于1的整数。
可以理解的是,当前第一指示域包括X比特信息,共有2 X的状态值:第一状态值,第二状态值,第三状态值,……,第2 X状态值,其中每个状态值可以指示一种其他终端设备。
假设当前第二状态值用于指示其他终端设备包括第二终端设备组中的终端设备,则第一终端设备例如可以将第一指示域的取值设置为第二状态值,在实际实现过程中,各个状态值的具体实现方式可以根据实际需求进行选择,此处对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取第一指示域,可以确定其他终端设备为第二终端设备组中的终端设备,则在第二终端设备和第二终端设备组中的终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
在上述介绍的SCI的取值的两种可能的实现方式中,指示信息可以采用两个阶段辅链路控制信息格式,即第一阶段辅链路控制信息(1st stage SCI)和第二阶段辅链路控制信息(2nd stage SCI)指示第一资源。此时,第一指示域可以包括在第二阶段辅链路控制信息格式中。
或者,指示信息还可以采用单阶段辅链路控制信息格式,此时,第一指示域包括在单辅链路控制信息格式中。
在本实施例中,指示信息还可以包括资源位置指示域,资源位置指示域用于指示第一资源所在的时频域位置。
以及,指示信息还可以包括第一终端设备的源(source)层一标识(layer-1ID)和 第二终端设备的目的(destination)层一标识(layer-1 ID),用来指示当前的指示信息是由第一终端设备发送给第二终端设备的。
上述介绍的是指示信息为SCI的实现方式,在另一种可能的实现方式中,指示信息还可以为高层信令,其中,高层信令例如可以为MAC CE或RRC,由PSSCH承载。
假设在本实施例中第三终端设备对应的是第三终端设备组,则当前第二终端设备与第三终端设备组进行组播通信。
具体的,第一终端设备通过高层信令指示第一资源,其中,高层信令例如可以包括第二指示域,其中,第二指示域用于指示其他终端设备的信息。
在一种可能的实现方式中,第二指示域的取值可以是根据第三终端设备组的组标识得到的。
在当前实施例中,其他终端设备为第三终端设备组中的第三终端设备,则第一终端设备可以将第一指示域的值设置为第三终端设备组进行组播通信的组层二标识,表明当前的其他终端设备为第三终端设备组中的终端设备。
也就是说,当指示信息为高层信令,并且其他终端设备是第三终端设备组中的终端设备时,高层信令中的第二指示域的值可以为:
第三终端设备组的组层二标识。
第二终端设备在收到第一终端设备发送的高层信令时,通过读取该第二指示域,可以确定其他终端设备为第三终端设备组中的终端设备,则在第二终端设备和第三终端设备组中的终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在指示信息为高层信令的实现方式下,因为高层信令是用数据信道承载的,所以对比特数没有特殊的要求,此时为了提升性能,可以在高层信令的第二指示域中包括完整的层二标识。
在另一种可能的实现方式中,第二指示域的取值可以为X比特的状态值,其中,X为大于等于1的整数。
可以理解的是,当前第二指示域包括X比特信息,共有2 X的状态值:第一状态值,第二状态值,第三状态值,……,第2 X状态值,其中每个状态值可以指示一种其他终端设备。
假设当前第二状态值用于指示其他终端设备包括第三终端设备对应的设备组,则第一终端设备例如可以将第一指示域的取值设置为第二状态值,在实际实现过程中,各个状态值的具体实现方式可以根据实际需求进行选择,此处对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取第二指示域,可以确定其他终端设备为第三终端设备组中的终端设备,则在第二终端设备和第三终端设备组中的终端设备进行数据传输的时候,可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在本实施例中,第二终端设备仅在和第三终端设备对应的终端设备组传输辅链路数据的时候,会参考指示信息指示的第一资源,在和第三终端设备对应的设备组之外的终端设备进行传输的时候无需参考当前的指示信息。
综上所示,在本实施例中,第二终端设备和第三终端设备对应的终端设备组进行 组播通信,第一终端设备向第二终端设备发送指示信息指示第一资源,从而指示在第二终端设备和第三终端设备对应的终端设备组进行通信的时候,推荐第二终端设备使用的资源或不推荐第二终端设备使用的资源,通过第一终端设备的指示,可以有效避免第二终端设备在进行数据传输时,可能遇到的隐藏节点的问题,有效避免了资源碰撞,提升传输的可靠性。
上述介绍的各个实施例均是指示信息中指示了其他终端设备具体是哪一个或者那一组,在本申请的另一种可能的实现方式中,指示信息中还可以不指示其他终端设备,此时表示第二终端设备无论在和哪个终端设备进行数据传输时,都需要参考当前指示信息所指示的第一资源。
例如可以结合上述的图8、图9以及当前的图10理解本实施例,图10为本申请实施例提供的第二终端设备进行广播通信的实现示意图。
在本实施例中,第二终端设备与非第一终端设备的其他终端设备(组)进行单播(参见图8),组播(参见图9)或广播通信(参见图10).
则其他终端设备可以接收第二终端设备发送的辅链路数据,以及第一终端设备可以向第二终端设备发送指示信息,以指示一组第一资源。
其中,第一资源可以为第二终端设备向其他终端设备发送辅链路数据时,不限制特定的其他终端设备(组),第一终端设备建议第二终端设备使用的资源集合,还可以为第一终端设备不建议第二终端设备使用的资源集合。因此本实施例主要解决第二终端设备因半双工问题,自身进行资源感知受限的问题,因此在本实施例中不指定特定的其他终端设备。
在一种可能的实现方式中,本实施例中的指示信息可以为辅链路控制信息(Sidelink control information,SCI),下面对本实施例中指示信息为SCI的实现方式进行介绍。
具体的,第一终端设备通过SCI指示第一资源,其中,SCI例如可以包括第一指示域,其中,第一指示域用于指示其他终端设备的信息。
在一种可能的实现方式中,第一指示域的取值可以是第一终端设备将该域的值设置为M个比特的固定值,如M个全0或全1,或者M个比特的特定值等,M的取值范围为1-24。
也就是说,当指示信息为SCI,并且不指定特定的其他终端设备时,SCI中的第一指示域的值可以为:M个比特的第一预设值,其中,M为大于等于1的整数。
在实际实现过程中,第一预设值具体实现方式可以根据实际需求进行选择,本实施例对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取该第一指示域,可以确定当前没有指定的其他终端设备为第一终端设备,则在第二终端设备和其他终端设备进行数据传输的时候,均可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在指示信息为SCI的实现方式下,因为SCI是物理层信令,为了提高信令的可靠性,希望SCI的比特数尽可能的少,因此在本实施例中具体是取M个 比特位的第一预设值作为第一指示域的取值。
在另一种可能的实现方式中,第一指示域的取值可以为X比特的状态值,其中,X为大于等于1的整数。
可以理解的是,当前第一指示域包括X比特信息,共有2 X的状态值:第一状态值,第二状态值,第三状态值,……,第2 X状态值,其中每个状态值可以指示一种其他终端设备。
假设当前第三状态值用于指示不指定其他终端设备,则第一终端设备例如可以将第一指示域的取值设置为第三状态值,在实际实现过程中,各个状态值的具体实现方式可以根据实际需求进行选择,此处对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取第一指示域,可以确定当前不指定其他终端设备,则在第二终端设备和其他终端设备进行数据传输的时候,均可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
在上述介绍的SCI的取值的两种可能的实现方式中,指示信息可以采用两个阶段辅链路控制信息格式,即第一阶段辅链路控制信息(1st stage SCI)和第二阶段辅链路控制信息(2nd stage SCI)指示第一资源。此时,第一指示域可以包括在第二阶段辅链路控制信息格式中。
或者,指示信息还可以采用单阶段辅链路控制信息格式,此时,第一指示域包括在单辅链路控制信息格式中。
在本实施例中,指示信息还可以包括资源位置指示域,资源位置指示域用于指示第一资源所在的时频域位置。
以及,指示信息还可以包括第一终端设备的源(source)层一标识(layer-1ID)和第二终端设备的目的(destination)层一标识(layer-1ID),用来指示当前的指示信息是由第一终端设备发送给第二终端设备的。
上述介绍的是指示信息为SCI的实现方式,在另一种可能的实现方式中,指示信息还可以为高层信令,其中,高层信令例如可以为MAC CE或RRC,由PSSCH承载。
具体的,第一终端设备通过高层信令指示第一资源,其中,高层信令例如可以包括第二指示域,其中,第二指示域用于指示其他终端设备的信息。
在一种可能的实现方式中,第二指示域的取值可以是第一终端设备将该域的值设置为R个比特的固定值,如R个全0或全1,或者R个比特的特定值等,R为第二指示域的比特数。
也就是说,当指示信息为高层信令,并且不指定其他终端设备时,高层信令中的第二指示域的值可以为:R比特的第二预设值。
第二终端设备在收到第一终端设备发送的高层信令时,通过读取该第二指示域,可以确定当前不指定其他终端设备,则在第二终端设备和其他终端设备进行数据传输的时候,均可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在指示信息为高层信令的实现方式下,因为高层信令是用数据信道承载的,所以对比特数没有特殊的要求,此时为了提升性能,可以在高层信令的第二指示域的比特均设置为第二预设值。
在另一种可能的实现方式中,第二指示域的取值可以为X比特的状态值,其中,X 为大于等于1的整数。
可以理解的是,当前第二指示域包括X比特信息,共有2 X的状态值:第一状态值,第二状态值,第三状态值,……,第2 X状态值,其中每个状态值可以指示一种其他终端设备。
假设当前第三状态值用于指示不指定其他终端设备,则第一终端设备例如可以将第一指示域的取值设置为第三状态值,在实际实现过程中,各个状态值的具体实现方式可以根据实际需求进行选择,此处对此不做特别限制。
第二终端设备在收到第一终端设备发送的指示信息时,通过读取第二指示域,可以确定当前不指定其他终端设备,则在第二终端设备和其他终端设备进行数据传输的时候,均可以根据指示信息指示的第一资源确定需要的辅链路传输资源。
可以理解的是,在本实施例中,因为没有指定特定的其他终端设备,因此第二终端设备在和各个终端设备传输辅链路数据的时候,均会参考指示信息指示的第一资源。
综上所示,在本实施例中,无论是第二终端设备和其他终端设备进行单播通信、组播通信还是广播通信,第一终端设备向第二终端设备发送指示信息指示第一资源,并且指示当前不指定特定的其他终端设备,从而指示在第二终端设备和各个其他终端设备进行通信的时候,期望第二终端设备使用的资源或不期望第二终端设备使用的资源,通过第一终端设备的指示,可以有效避免第二终端设备因半双工问题,自身进行资源感知受限的问题,有效避免了资源碰撞,提升传输的可靠性。
上述介绍的各个实施例中,在介绍状态值的时候,示例性的介绍了第一状态值、第二状态值和第三状态值的含义,在实际实现过程中,剩余的状态值例如可以作为预留状态,以供后续功能扩展使用;或者,各个状态值的具体含义并不限于上述的介绍,其可以根据实际需求进行选择,本实施例对此不做限定。
综上所述,本申请实施例提供的辅链路资源处理方法,其中第二终端设备通过接收第一终端设备发送的指示信息,以根据指示信息指示的第一资源确定和其他终端设备进行数据传输的辅链路传输资源,从而能够有效的避免隐藏节点问题和半双工问题,以避免资源碰撞,提升传输的可靠性。
图11为本申请实施例提供的辅链路资源处理装置的结构示意图。如图11所示,该装置110包括:接收模块1101以及确定模块1102。
接收模块1101,用于第二终端设备接收第一终端设备发送的指示信息,其中,所述指示信息用于指示第一资源;
确定模块1102,用于所述第二终端设备根据所述第一资源,确定第二终端设备的辅链路传输资源,其中,所述辅链路传输资源用于所述第二终端设备和其他终端设备进行数据传输。
在一种可能的设计中,所述指示信息包括如下信息中的至少一种:辅链路控制信息SCI、高层指令。
在一种可能的设计中,所述SCI包括第一指示域,其中,所述第一指示域用于指示所述其他终端设备的信息。
在一种可能的设计中,所述第二终端设备和所述第一终端设备进行单播通信,所 述其他终端设备包括所述第一终端设备;
所述第一指示域的值为所述第一终端设备的源层二标识的M个高比特位;或者,
所述第一指示域的值为所述第一终端设备的目的层二标识的M个高比特位;或者,
所述第一指示域的值为所述第一终端设备的源层二标识的M个低比特位;或者,
所述第一指示域的值为所述第一终端设备的目的层二标识的M个低比特位;
其中,所述M为大于等于1的整数。
在一种可能的设计中,所述第二终端设备和第三终端设备进行单播通信,所述第三终端设备为和所述第一终端设备不同的终端设备,所述其他终端设备包括所述第三终端设备;
所述第一指示域的值为所述第三终端设备的源层二标识的M个高比特位;或者,
所述第一指示域的值为所述第三终端设备的目的层二标识的M个高比特位;或者,
所述第一指示域的值为所述第三终端设备的源层二标识的M个低比特位;或者,
所述第一指示域的值为所述第三终端设备的目的层二标识的M个低比特位;
其中,所述M为大于等于1的整数。
在一种可能的设计中,所述第二终端设备和所述第一终端设备对应的第一终端设备组进行组播通信,所述其他终端设备包括所述第一终端设备组中的终端设备;
所述第一指示域的值为所述第一终端设备组的组层二标识的M个高比特位;或者,
所述第一指示域的值为所述第一终端设备组的组层二标识的M个低比特位;
其中,所述M为大于等于1的整数。
在一种可能的设计中,所述第二终端设备和所述第三终端设备对应的第二终端设备组进行组播通信,所述其他终端设备包括所述第二终端设备组中的终端设备;
所述第一指示域的值为所述第二终端设备组的组层二标识的M个高比特位;或者,
所述第一指示域的值为所述第二终端设备组的组层二标识的M个低比特位;
其中,所述M为大于等于1的整数。
在一种可能的设计中,所述第一指示域用于指示不指定所述其他终端设备;
所述第一指示域的值为M个比特的第一预设值,其中,所述M为大于等于1的整数。
在一种可能的设计中,所述高层信令包括第二指示域,其中,所述第二指示域用于指示所述其他终端设备的信息。
在一种可能的设计中,所述第二终端设备和所述第一终端设备进行单播通信,所述其他终端设备包括所述第一终端设备;
所述第二指示域的值为所述第一终端设备的源层二标识;或者,
所述第二指示域的值为所述第一终端设备的目的层二标识。
在一种可能的设计中,所述第二终端设备和第三终端设备进行单播通信,所述第三终端设备为和所述第一终端设备不同的终端设备,所述其他终端设备包括所述第三终端设备;
所述第二指示域的值为所述第三终端设备的源层二标识;或者,
所述第二指示域的值为所述第三终端设备的目的层二标识。
在一种可能的设计中,所述第二终端设备和所述第一终端设备对应的第三终端设 备组进行组播通信,所述其他终端设备包括所述第三终端设备组中的终端设备;
所述第二指示域的值为所述第三终端设备组的组层二标识。
在一种可能的设计中,所述第二终端设备和所述第三终端设备对应的第四终端设备组进行组播通信,所述其他终端设备包括所述第四终端设备组中的终端设备;
所述第二指示域的值为所述第四终端设备组的组层二标识。
在一种可能的设计中,所述第二指示域用于指示不指定所述其他终端设备;
所述第二指示域的值为R比特的第二预设值,其中,所述R为所述第二指示域的比特数。
在一种可能的设计中,所述指示域的值为X个比特的状态值,所述X为大于等于1的整数,其中,所述状态值包括至少包括如下中的任一种:第一状态值、第二状态值、第三状态值;
所述第一状态值用于指示所述其他终端设备包括所述第一终端设备或者所述第一终端设备对应的终端设备组中的终端设备;
所述第二状态值用于指示所述其他终端设备包括所述第三终端设备或者所述第三终端设备对应的终端设备组中的终端设备;
所述第三状态值用于指示不存在指定所述其他终端设备。
在一种可能的设计中,所述指示信息为两个阶段的辅链路控制信息,所述指示域包括在所述辅链路控制信息的第二阶段信息中。
在一种可能的设计中,所述指示信息为单阶段的辅链路控制信息,所述指示域包括在所述辅链路控制信息中。
在一种可能的设计中,所述指示信息中还包括资源位置指示域,其中,所述资源位置指示域用于指示所述第一资源所在的时频域位置。
在一种可能的设计中,所述指示信息中还包括所述第一终端设备的源层一标识和所述第二终端设备的目的层一标识。
在一种可能的设计中,所述第一资源为允许所述第二终端设备进行数据传输的辅链路传输资源;或者
所述第一资源为不允许所述第二终端设备进行数据传输的辅链路传输资源。
图12为本申请实施例提供的辅链路资源处理设备的硬件结构示意图,如图12所示,本实施例的辅链路资源处理设备120包括:处理器1201以及存储器1202;其中
存储器1202,用于存储计算机执行指令;
处理器1201,用于执行存储器存储的计算机执行指令,以实现上述实施例中辅链路资源处理方法所执行的各个步骤。具体可以参见前述方法实施例中的相关描述。
可选地,存储器1202既可以是独立的,也可以跟处理器1201集成在一起。
当存储器1202独立设置时,该辅链路资源处理设备还包括总线1203,用于连接所述存储器1202和处理器1201。
本申请实施例还提供一种计算机可读存储介质,所述计算机可读存储介质中存储有计算机执行指令,当处理器执行所述计算机执行指令时,实现如上辅链路资源处理设备所执行的辅链路资源处理方法。
在本申请所提供的几个实施例中,应该理解到,所揭露的设备和方法,可以通过 其它的方式实现。例如,以上所描述的设备实施例仅仅是示意性的,例如,所述模块的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个模块可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或模块的间接耦合或通信连接,可以是电性,机械或其它的形式。
上述以软件功能模块的形式实现的集成的模块,可以存储在一个计算机可读取存储介质中。上述软件功能模块存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)或处理器(英文:processor)执行本申请各个实施例所述方法的部分步骤。
应理解,上述处理器可以是中央处理单元(英文:Central Processing Unit,简称:CPU),还可以是其他通用处理器、数字信号处理器(英文:Digital Signal Processor,简称:DSP)、专用集成电路(英文:Application Specific Integrated Circuit,简称:ASIC)等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合发明所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。
存储器可能包含高速RAM存储器,也可能还包括非易失性存储NVM,例如至少一个磁盘存储器,还可以为U盘、移动硬盘、只读存储器、磁盘或光盘等。
总线可以是工业标准体系结构(Industry Standard Architecture,ISA)总线、外部设备互连(Peripheral Component,PCI)总线或扩展工业标准体系结构(Extended Industry Standard Architecture,EISA)总线等。总线可以分为地址总线、数据总线、控制总线等。为便于表示,本申请附图中的总线并不限定仅有一根总线或一种类型的总线。
上述存储介质可以是由任何类型的易失性或非易失性存储设备或者它们的组合实现,如静态随机存取存储器(SRAM),电可擦除可编程只读存储器(EEPROM),可擦除可编程只读存储器(EPROM),可编程只读存储器(PROM),只读存储器(ROM),磁存储器,快闪存储器,磁盘或光盘。存储介质可以是通用或专用计算机能够存取的任何可用介质。
本领域普通技术人员可以理解:实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时,执行包括上述各方法实施例的步骤;而前述的存储介质包括:ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是:以上各实施例仅用以说明本申请的技术方案,而非对其限制;尽管参照前述各实施例对本申请进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (42)

  1. 一种辅链路资源处理方法,其特征在于,包括:
    第二终端设备接收第一终端设备发送的指示信息,其中,所述指示信息用于指示第一资源;
    所述第二终端设备根据所述第一资源,确定第二终端设备的辅链路传输资源,其中,所述辅链路传输资源用于所述第二终端设备和其他终端设备进行数据传输。
  2. 根据权利要求1所述的方法,其特征在于,所述指示信息包括如下信息中的至少一种:辅链路控制信息SCI、高层指令。
  3. 根据权利要求2所述的方法,其特征在于,所述SCI包括第一指示域,其中,所述第一指示域用于指示所述其他终端设备的信息。
  4. 根据权利要求3所述的方法,其特征在于,所述第二终端设备和所述第一终端设备进行单播通信,所述其他终端设备包括所述第一终端设备;
    所述第一指示域的值为所述第一终端设备的源层二标识的M个高比特位;或者,
    所述第一指示域的值为所述第一终端设备的目的层二标识的M个高比特位;或者,
    所述第一指示域的值为所述第一终端设备的源层二标识的M个低比特位;或者,
    所述第一指示域的值为所述第一终端设备的目的层二标识的M个低比特位;
    其中,所述M为大于等于1的整数。
  5. 根据权利要求3所述的方法,其特征在于,所述第二终端设备和第三终端设备进行单播通信,所述第三终端设备为和所述第一终端设备不同的终端设备,所述其他终端设备包括所述第三终端设备;
    所述第一指示域的值为所述第三终端设备的源层二标识的M个高比特位;或者,
    所述第一指示域的值为所述第三终端设备的目的层二标识的M个高比特位;或者,
    所述第一指示域的值为所述第三终端设备的源层二标识的M个低比特位;或者,
    所述第一指示域的值为所述第三终端设备的目的层二标识的M个低比特位;
    其中,所述M为大于等于1的整数。
  6. 根据权利要求3所述的方法,其特征在于,所述第二终端设备和所述第一终端设备对应的第一终端设备组进行组播通信,所述其他终端设备包括所述第一终端设备组中的终端设备;
    所述第一指示域的值为所述第一终端设备组的组层二标识的M个高比特位;或者,
    所述第一指示域的值为所述第一终端设备组的组层二标识的M个低比特位;
    其中,所述M为大于等于1的整数。
  7. 根据权利要求3所述的方法,其特征在于,所述第二终端设备和所述第三终端设备对应的第二终端设备组进行组播通信,所述其他终端设备包括所述第二终端设备组中的终端设备;
    所述第一指示域的值为所述第二终端设备组的组层二标识的M个高比特位;或者,
    所述第一指示域的值为所述第二终端设备组的组层二标识的M个低比特位;
    其中,所述M为大于等于1的整数。
  8. 根据权利要求3所述的方法,其特征在于,所述第一指示域用于指示不指定所述其他终端设备;
    所述第一指示域的值为M个比特的第一预设值,其中,所述M为大于等于1的整数。
  9. 根据权利要求2所述的方法,其特征在于,所述高层信令包括第二指示域,其中,所述第二指示域用于指示所述其他终端设备的信息。
  10. 根据权利要求9所述的方法,其特征在于,所述第二终端设备和所述第一终端设备进行单播通信,所述其他终端设备包括所述第一终端设备;
    所述第二指示域的值为所述第一终端设备的源层二标识;或者,
    所述第二指示域的值为所述第一终端设备的目的层二标识。
  11. 根据权利要求9所述的方法,其特征在于,所述第二终端设备和第三终端设备进行单播通信,所述第三终端设备为和所述第一终端设备不同的终端设备,所述其他终端设备包括所述第三终端设备;
    所述第二指示域的值为所述第三终端设备的源层二标识;或者,
    所述第二指示域的值为所述第三终端设备的目的层二标识。
  12. 根据权利要求9所述的方法,其特征在于,所述第二终端设备和所述第一终端设备对应的第三终端设备组进行组播通信,所述其他终端设备包括所述第三终端设备组中的终端设备;
    所述第二指示域的值为所述第三终端设备组的组层二标识。
  13. 根据权利要求9所述的方法,其特征在于,所述第二终端设备和所述第三终端设备对应的第四终端设备组进行组播通信,所述其他终端设备包括所述第四终端设备组中的终端设备;
    所述第二指示域的值为所述第四终端设备组的组层二标识。
  14. 根据权利要求9所述的方法,其特征在于,所述第二指示域用于指示不指定所述其他终端设备;
    所述第二指示域的值为R比特的第二预设值,其中,所述R为所述第二指示域的比特数。
  15. 根据权利要求2-14任一项所述的方法,其特征在于,所述指示域的值为X个比特的状态值,所述X为大于等于1的整数,其中,所述状态值包括至少包括如下中的任一种:第一状态值、第二状态值、第三状态值;
    所述第一状态值用于指示所述其他终端设备包括所述第一终端设备或者所述第一终端设备对应的终端设备组中的终端设备;
    所述第二状态值用于指示所述其他终端设备包括所述第三终端设备或者所述第三终端设备对应的终端设备组中的终端设备;
    所述第三状态值用于指示不存在指定所述其他终端设备。
  16. 根据权利要求1-15任一项所述的方法,其特征在于,所述指示信息为两个阶段的辅链路控制信息,所述指示域包括在所述辅链路控制信息的第二阶段信息中。
  17. 根据权利要求1-15任一项所述的方法,其特征在于,所述指示信息为单阶段的辅链路控制信息,所述指示域包括在所述辅链路控制信息中。
  18. 根据权利要求1-17任一项所述的方法,其特征在于,所述指示信息中还包括资源位置指示域,其中,所述资源位置指示域用于指示所述第一资源所在的时频域位置。
  19. 根据权利要求1-18任一项所述的方法,其特征在于,所述指示信息中还包括所述第一终端设备的源层一标识和所述第二终端设备的目的层一标识。
  20. 根据权利要求1-19任一项所述的方法,其特征在于,
    所述第一资源为允许所述第二终端设备进行数据传输的辅链路传输资源;或者
    所述第一资源为不允许所述第二终端设备进行数据传输的辅链路传输资源。
  21. 一种辅链路资源处理装置,其特征在于,包括:
    接收模块,用于第二终端设备接收第一终端设备发送的指示信息,其中,所述指示信息用于指示第一资源;
    确定模块,用于所述第二终端设备根据所述第一资源,确定第二终端设备的辅链路传输资源,其中,所述辅链路传输资源用于所述第二终端设备和其他终端设备进行数据传输。
  22. 根据权利要求21所述的装置,其特征在于,所述指示信息包括如下信息中的至少一种:辅链路控制信息SCI、高层指令。
  23. 根据权利要求22所述的装置,其特征在于,所述SCI包括第一指示域,其中,所述第一指示域用于指示所述其他终端设备的信息。
  24. 根据权利要求23所述的装置,其特征在于,所述第二终端设备和所述第一终端设备进行单播通信,所述其他终端设备包括所述第一终端设备;
    所述第一指示域的值为所述第一终端设备的源层二标识的M个高比特位;或者,
    所述第一指示域的值为所述第一终端设备的目的层二标识的M个高比特位;或者,
    所述第一指示域的值为所述第一终端设备的源层二标识的M个低比特位;或者,
    所述第一指示域的值为所述第一终端设备的目的层二标识的M个低比特位;
    其中,所述M为大于等于1的整数。
  25. 根据权利要求23所述的装置,其特征在于,所述第二终端设备和第三终端设备进行单播通信,所述第三终端设备为和所述第一终端设备不同的终端设备,所述其他终端设备包括所述第三终端设备;
    所述第一指示域的值为所述第三终端设备的源层二标识的M个高比特位;或者,
    所述第一指示域的值为所述第三终端设备的目的层二标识的M个高比特位;或者,
    所述第一指示域的值为所述第三终端设备的源层二标识的M个低比特位;或者,
    所述第一指示域的值为所述第三终端设备的目的层二标识的M个低比特位;
    其中,所述M为大于等于1的整数。
  26. 根据权利要求23所述的装置,其特征在于,所述第二终端设备和所述第一终端设备对应的第一终端设备组进行组播通信,所述其他终端设备包括所述第一终端设备组中的终端设备;
    所述第一指示域的值为所述第一终端设备组的组层二标识的M个高比特位;或者,
    所述第一指示域的值为所述第一终端设备组的组层二标识的M个低比特位;
    其中,所述M为大于等于1的整数。
  27. 根据权利要求23所述的装置,其特征在于,所述第二终端设备和所述第三终端设备对应的第二终端设备组进行组播通信,所述其他终端设备包括所述第二终端设备组中的终端设备;
    所述第一指示域的值为所述第二终端设备组的组层二标识的M个高比特位;或者,
    所述第一指示域的值为所述第二终端设备组的组层二标识的M个低比特位;
    其中,所述M为大于等于1的整数。
  28. 根据权利要求23所述的装置,其特征在于,所述第一指示域用于指示不指定所述其他终端设备;
    所述第一指示域的值为M个比特的第一预设值,其中,所述M为大于等于1的整数。
  29. 根据权利要求22所述的装置,其特征在于,所述高层信令包括第二指示域,其中,所述第二指示域用于指示所述其他终端设备的信息。
  30. 根据权利要求29所述的装置,其特征在于,所述第二终端设备和所述第一终端设备进行单播通信,所述其他终端设备包括所述第一终端设备;
    所述第二指示域的值为所述第一终端设备的源层二标识;或者,
    所述第二指示域的值为所述第一终端设备的目的层二标识。
  31. 根据权利要求29所述的装置,其特征在于,所述第二终端设备和第三终端设备进行单播通信,所述第三终端设备为和所述第一终端设备不同的终端设备,所述其他终端设备包括所述第三终端设备;
    所述第二指示域的值为所述第三终端设备的源层二标识;或者,
    所述第二指示域的值为所述第三终端设备的目的层二标识。
  32. 根据权利要求29所述的装置,其特征在于,所述第二终端设备和所述第一终端设备对应的第三终端设备组进行组播通信,所述其他终端设备包括所述第三终端设备组中的终端设备;
    所述第二指示域的值为所述第三终端设备组的组层二标识。
  33. 根据权利要求29所述的装置,其特征在于,所述第二终端设备和所述第三终端设备对应的第四终端设备组进行组播通信,所述其他终端设备包括所述第四终端设备组中的终端设备;
    所述第二指示域的值为所述第四终端设备组的组层二标识。
  34. 根据权利要求29所述的装置,其特征在于,所述第二指示域用于指示不指定所述其他终端设备;
    所述第二指示域的值为R比特的第二预设值,其中,所述R为所述第二指示域的比特数。
  35. 根据权利要求22-34任一项所述的装置,其特征在于,所述指示域的值为X个比特的状态值,所述X为大于等于1的整数,其中,所述状态值包括至少包括如下中的任一种:第一状态值、第二状态值、第三状态值;
    所述第一状态值用于指示所述其他终端设备包括所述第一终端设备或者所述第一终端设备对应的终端设备组中的终端设备;
    所述第二状态值用于指示所述其他终端设备包括所述第三终端设备或者所述第三终端设备对应的终端设备组中的终端设备;
    所述第三状态值用于指示不存在指定所述其他终端设备。
  36. 根据权利要求21-35任一项所述的装置,其特征在于,所述指示信息为两个阶段的辅链路控制信息,所述指示域包括在所述辅链路控制信息的第二阶段信息中。
  37. 根据权利要求21-35任一项所述的装置,其特征在于,所述指示信息为单阶段的辅链路控制信息,所述指示域包括在所述辅链路控制信息中。
  38. 根据权利要求21-37任一项所述的装置,其特征在于,所述指示信息中还包括资源位置指示域,其中,所述资源位置指示域用于指示所述第一资源所在的时频域位置。
  39. 根据权利要求21-38任一项所述的装置,其特征在于,所述指示信息中还包括所述第一终端设备的源层一标识和所述第二终端设备的目的层一标识。
  40. 根据权利要求21-39任一项所述的装置,其特征在于,
    所述第一资源为允许所述第二终端设备进行数据传输的辅链路传输资源;或者
    所述第一资源为不允许所述第二终端设备进行数据传输的辅链路传输资源。
  41. 一种辅链路资源处理设备,其特征在于,包括:
    存储器,用于存储程序;
    处理器,用于执行所述存储器存储的所述程序,当所述程序被执行时,所述处理器用于执行如权利要求1至20中任一所述的方法。
  42. 一种计算机可读存储介质,其特征在于,包括指令,当其在计算机上运行时,使得计算机执行如权利要求1至20中任一所述的方法。
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