WO2024093919A1 - Procédé et appareil de libération de liaison de relais, et dispositif de communication - Google Patents

Procédé et appareil de libération de liaison de relais, et dispositif de communication Download PDF

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Publication number
WO2024093919A1
WO2024093919A1 PCT/CN2023/127780 CN2023127780W WO2024093919A1 WO 2024093919 A1 WO2024093919 A1 WO 2024093919A1 CN 2023127780 W CN2023127780 W CN 2023127780W WO 2024093919 A1 WO2024093919 A1 WO 2024093919A1
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Prior art keywords
relay
request message
link
release
unicast
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PCT/CN2023/127780
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English (en)
Chinese (zh)
Inventor
王文
Original Assignee
维沃移动通信有限公司
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Publication of WO2024093919A1 publication Critical patent/WO2024093919A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/34—Selective release of ongoing connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present application belongs to the field of communication technology, and specifically relates to a relay link release method, device and communication equipment.
  • An end-to-end (UE (User Equipment) to UE, U2U) relay communication system is introduced in the related technology to realize communication between the source UE and the target UE through the relay UE.
  • UE User Equipment
  • PC5 link an end-to-end direct communication interface connection
  • target UEs share the PC5 link between a source UE and a relay UE
  • source UEs share the PC5 link between a relay UE and a target UE.
  • the embodiments of the present application provide a relay link release method, apparatus, and communication device, which can solve the problem of correctly implementing the release of a specific end-to-end U2U relay communication connection in a shared U2U relay communication scenario.
  • a relay link release method comprising: when a first condition is met, a first UE sends a first request message to a relay UE, the first request message being used to request the release of a U2U relay link associated with a second UE; wherein the first condition comprises at least one of the following: the first UE is a UE among at least two third UEs connected to the second UE through the relay UE; the second UE is a UE among at least two fourth UEs connected to the first UE through the relay UE.
  • a relay link release device which may include: a receiving module and a processing module.
  • the receiving module is used to receive a first request message sent by a first UE, and the first request message is used to release a U2U relay link related to a second UE;
  • the processing module is used to perform release-related operations on the U2U relay link related to the second UE in response to the first request message received by the receiving module; wherein the first request message is sent by the first UE when a first condition is satisfied, and the first condition includes at least one of the following: the first UE is a UE among at least two third UEs connected to the second UE through the relay UE; the second UE is a UE among at least two fourth UEs connected to the first UE through the relay UE.
  • a relay link release method comprising: a relay UE receives a first request message sent by a first UE, the first request message being used to release a U2U relay link associated with a second UE; the relay UE responds to the first request message and performs release-related operations on the U2U relay link associated with the second UE; wherein the first request message is sent by the first UE when a first condition is satisfied, and the first condition comprises at least one of the following: the first UE is a UE among at least two third UEs connected to the second UE through the relay UE; the second UE is a UE among at least two fourth UEs connected to the first UE through the relay UE.
  • a relay link release device which may include: a receiving module and a processing module; the receiving module is used to receive a first request message sent by a first UE, the first request message is used to release a U2U relay link related to a second UE; the processing module is used to respond to the first request message received by the receiving module, and perform a release-related operation on the U2U relay link related to the second UE; wherein the first request message is sent by the first UE when a first condition is met, and the first condition includes at least one of the following: the first UE is a U2U relay link related to the second UE; The relay UE is a UE among at least two third UEs connected to the second UE; the second UE is a UE among at least two fourth UEs connected to the first UE through the relay UE.
  • a relay link release method comprising: a second UE receiving a second request message sent by a relay UE, the second request message being used to request the release of a relay link associated with the second UE, the second request message comprising second information used to indicate a first UE, the first UE being connected to the second UE through the relay UE; the second UE releasing the relay link associated with the second UE in response to the second request message;
  • the second request message is sent by the relay UE when the first PC5 unicast link is a shared unicast link, and the first unicast link is a PC5 unicast link between the relay UE and the second UE.
  • a relay link release device which may include: a receiving module and a processing module.
  • the receiving module is used to receive a second request message sent by a relay UE, the second request message is used to request the release of a relay link related to a second UE, the second request message includes second information used to indicate a first UE, and the first UE is connected to the second UE through the relay UE;
  • the processing module is used to release the relay link related to the second UE in response to the second request message received by the receiving module; wherein the second request message is sent by the relay UE when the first PC5 unicast link is a shared unicast link, and the first unicast link is a PC5 unicast link between the relay UE and the second UE.
  • a communication device which includes a processor and a memory, wherein the memory stores programs or instructions that can be executed on the processor, and when the programs or instructions are executed by the processor, the steps of the method of the first aspect are implemented.
  • a communication device which includes a processor and a memory, wherein the memory stores a program or instruction that can be executed on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the third aspect are implemented.
  • a communication device comprising a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the steps of the method described in the fifth aspect are implemented.
  • a terminal comprising a processor and a communication interface, wherein the processor is used to determine whether a first condition is met, and the communication interface is used to send a first request message to the relay UE when the first condition is met, and the first request message is used to request the release of a U2U relay link related to a second UE.
  • a terminal comprising a processor and a communication interface, wherein the communication interface is used to receive a first request message sent by a first UE, the first request message being used to release a U2U relay link associated with a second UE; and the processor is used to perform a release-related operation on the U2U relay link associated with the second UE in response to the first request message received by the communication interface.
  • the first request message is sent by the first UE when a first condition is satisfied, and the first condition includes at least one of the following: the first UE is a UE among at least two third UEs connected to the second UE through the relay UE; and the second UE is a UE among at least two fourth UEs connected to the first UE through the relay UE.
  • a terminal comprising a processor and a communication interface, wherein the communication interface is used to receive a second request message sent by a relay UE, the second request message is used to request the release of a relay link associated with the second UE, the second request message includes second information for indicating a first UE, and the first UE and the second UE are connected through the relay UE; the processor is used to release the relay link associated with the second UE in response to the second request message.
  • the second request message is sent by the relay UE when the first PC5 unicast link is a shared unicast link, and the first unicast link is a PC5 unicast link between the relay UE and the second UE.
  • a communication system including the communication devices described in the seventh and eighth aspects above; the communication device described in the seventh aspect is used to execute the steps of the relay link release method described in the first aspect above, and the communication device described in the eighth aspect is used to execute the steps of the relay link release method described in the third aspect above. Or including the communication devices described in the seventh, eighth and ninth aspects above; the seventh aspect The communication device described in the above aspect is used to execute the steps of the relay link release method described in the first aspect above, the communication device described in the eighth aspect is used to execute the steps of the relay link release method described in the third aspect above, and the communication device described in the ninth aspect is used to execute the steps of the relay link release method described in the fifth aspect above.
  • a readable storage medium on which a program or instruction is stored.
  • the program or instruction is executed by a processor, the steps of the method described in the first aspect, the method described in the third aspect, or the method described in the fifth aspect are implemented.
  • a chip comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, the method described in the third aspect, or the method described in the fifth aspect.
  • a computer program/program product is provided, wherein the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the steps of the method described in the first aspect, the method described in the third aspect, or the method described in the fifth aspect.
  • a first user equipment UE when a first condition is met, sends a first request message to a relay UE, and the first request message is used to request the release of a U2U relay link associated with a second UE; wherein the first condition includes at least one of the following: the first UE is a UE in at least two third UEs connected to the second UE through the relay UE; the second UE is a UE in at least two fourth UEs connected to the first UE through the relay UE.
  • FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application.
  • FIG2 is a second block diagram of a wireless communication system applicable to the embodiment of the present application.
  • FIG3 is a third block diagram of a wireless communication system applicable to the embodiment of the present application.
  • FIG4 is a flowchart of a method for releasing a relay link according to an embodiment of the present application.
  • FIG5 is a second flow chart of a relay link release method provided in an embodiment of the present application.
  • FIG6 is a third flow chart of a relay link release method provided in an embodiment of the present application.
  • FIG7 is a fourth flow chart of a relay link release method provided in an embodiment of the present application.
  • FIG8 is a fourth block diagram of a wireless communication system applicable to embodiments of the present application.
  • FIG9 is a fifth flow chart of a relay link release method provided in an embodiment of the present application.
  • FIG10 is a fifth block diagram of a wireless communication system applicable to an embodiment of the present application.
  • FIG11 is a schematic diagram of a structure of a relay link release device according to an embodiment of the present application.
  • FIG. 12 is a second schematic diagram of the structure of the relay link release device provided in an embodiment of the present application.
  • FIG. 13 is a third structural diagram of a relay link release device provided in an embodiment of the present application.
  • FIG14 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • FIG. 15 is a schematic diagram of the structure of a terminal provided in an embodiment of the present application.
  • first, second, etc. in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by “first” and “second” are generally of the same type, and do not limit the number of objects.
  • first pair of in the specification and claims means at least one of the connected objects, and the character “/” generally means that the objects connected before and after are in an “or” relationship.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR new radio
  • FIG1 shows a block diagram of a wireless communication system applicable to an embodiment of the present application.
  • the wireless communication system includes a terminal 11 and a network side device 12 .
  • the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), augmented reality (augmented reality, AR)/virtual reality (virtual reality, VR) equipment, a robot, a wearable device (Wearable Device), a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (personal computer, PC), an ATM or a self-service machine and other terminal side devices, and the wear
  • the network side device 12 may include an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (RAN), a radio access network function or a radio access network unit.
  • the access network device 12 may include a base station, a WLAN access point or a WiFi node, etc.
  • the base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home B node, a home evolved B node, a transmitting and receiving point (TRP) or other appropriate terms in the field, as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary, it should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.
  • the R18 short-range communication project introduces the U2U relay communication scenario.
  • this communication scenario there may be a need to share the PC5 link, which can also be called a shared relay UE.
  • sharing the PC5 link at least one of the following can be effectively avoided:
  • Scenario A The same source UE establishes multiple PC5 links between the source UE and the relay UE through the relay UE.
  • a U2U relay link between the source UE and three target UEs may be implemented.
  • Scenario B The same target UE establishes multiple PC5 links with the relay UE to implement U2U relay communication links with multiple source UEs.
  • the source UE only wants to release the end-to-end U2U relay link with the target UE#1, according to the R17 version and the previous processing of PC5 link release, after the relay UE receives the PC5 link release from the source UE, it will execute the PC5 link release process between the source UE and the relay UE. This will cause the U2U relay communication between the source UE and the target UEs #2 and #3 to be interrupted. Even if the target UE's identifier is carried in the PC5 link release, there is currently no regulation for retaining the PC5 link processing for PC5 link release, so standardized instructions are needed to correctly implement the release of specific end-to-end U2U relay links in shared U2U relay communications. This problem also applies to the above scenario B.
  • the first user equipment UE when the first condition is met, sends a first request message to the relay UE, and the first request message is used to request the release of the U2U relay link associated with the second UE; wherein the first condition includes at least one of the following: the first UE is a UE in at least two third UEs connected to the second UE through the relay UE; the second UE is a UE in at least two fourth UEs connected to the first UE through the relay UE. It can be understood that the first condition is used to characterize the communication scenario of sharing the U2U relay.
  • the first request message may include first information for indicating the second UE, thereby being able to display and indicate the U2U relay link related to the second UE that needs to be released.
  • FIG. 4 shows a flow chart of the relay link release method provided by the embodiment of the present application.
  • the relay link release method provided by the embodiment of the present application may include the following steps 401 to 404.
  • Step 401 The first UE determines whether a first condition is met.
  • the first condition may include at least one of the following (1) and (2):
  • the first UE is a UE among at least two third UEs connected to the second UE through the relay UE;
  • the second UE is a UE among at least two fourth UEs connected to the first UE through the relay UE.
  • satisfying the first condition can be understood as: the U2U relay communication system where the first UE is located satisfies the first condition. Specifically, if the U2U relay communication system where the first UE is located satisfies the first condition, it means that the communication system is a communication system of a shared relay UE, and the first UE continues to execute step 402. If the U2U relay communication system where the first UE is located satisfies the first condition, it means that the communication system is a communication system of a non-shared relay UE, and the first UE directly sends a third request message requesting to release the U2U relay link. For the description of the third request message, refer to the relevant description of the related technology.
  • the third UE and the fourth UE are the source UE and the target UE respectively; or, the third UE and the fourth UE are the target UE and the source UE respectively.
  • the first UE may be a source UE and the second UE may be a target UE; or the first UE may be a target UE and the second UE may be a source UE.
  • the specific method is determined according to actual use requirements and is not limited in the embodiment of the present application.
  • the relay link release process can be initiated by the source UE or the target UE.
  • Step 402 The first UE sends a first request message to the relay UE.
  • Step 403 The relay UE receives the first request message.
  • the first request message may be used to request the release of the U2U relay link associated with the second UE.
  • Mode 2 If the first request message does not include information indicating any third UE, it means that the first request message is used to request the release of the U2U relay link with at least one third UE.
  • the following embodiments are illustrated by taking the first request message including the first information as an example.
  • the first request message is sent by the first UE when the first condition is met.
  • the first condition refer to the relevant description in the above step 401.
  • the first information may include at least one of the following: an identifier of the second UE; an Internet Protocol (IP) address of the second UE; a layer (L) 2 identifier of the second UE; a multiple access channel (MAC) address of the second UE.
  • IP Internet Protocol
  • L layer
  • MAC multiple access channel
  • the first request message may be one of the following:
  • the difference between the first request message in mode 1 and the PC5 unicast link release request message in the related art is that the first request message includes the first information.
  • the first request message in mode 2 is the same as the PC5 unicast link release request message in the related art.
  • the first request message further includes first removal operation indication information.
  • the first request message includes the first information and the removal operation indication information.
  • the first removal operation indication information is used for releasing the U2U relay link.
  • the above-mentioned “U2U relay link related to the second UE” may include any one of the following items: a first PC5 unicast link between the relay UE and the second UE; a PC5 context related to the first UE in the first PC5 unicast link.
  • Step 404 The relay UE performs a release-related operation on the U2U relay link related to the second UE in response to the first request message.
  • the relay UE after the relay UE receives the first request message, it can respond to the first request message to determine whether the first PC5 unicast link between the relay UE and the second UE is a shared unicast link, and perform an operation corresponding to the judgment result of the first PC5 unicast link (see steps 404b and 404c below).
  • step 404 is illustrated by taking the first information included in the first request message as an example.
  • the relay UE can directly initiate the release of the U2U relay link between the first UE and at least one fourth UE.
  • the specific release method please refer to the relevant technology.
  • the above step 404 can be specifically implemented through the following step 404a.
  • Step 404a The relay UE responds to the first request message and performs a release-related operation on the U2U relay link related to the second UE according to the first removal operation indication information and the first information.
  • the first removal operation indication information is used for releasing the U2U relay link.
  • the relay UE can determine the "U2U relay link related to the second UE" according to the first information, and determine the "remove” or “release” operation, i.e., release-related operation, according to the first removal operation indication information, thereby implementing the release-related operation of the U2U relay link related to the second UE.
  • step 404 may be specifically implemented through the following step 404b or step 404c.
  • Step 404b In response to the first request message, the relay UE initiates a release process of the first PC5 unicast link when the first PC5 unicast link is a non-shared unicast link.
  • the first PC5 unicast link is a PC5 unicast link between the relay UE and the second UE.
  • Step 404c In response to the first request message, the relay UE sends a second request message to the second UE when the first PC5 unicast link is a shared unicast link.
  • the second request message may be used to request the release of the U2U relay link associated with the second UE, and the second request message includes second information for indicating the first UE, and the first UE is connected to the second UE via the relay UE.
  • the second UE can receive the second request message and, in response to the second request message, perform operations related to releasing the U2U relay link related to the second UE.
  • the second information may include at least one of the following: an identifier of the first UE; an IP address of the first UE; a layer 2 identifier of the first UE; or a MAC address of the first UE.
  • the second UE after the second UE receives the second request message, it can determine the first UE from at least one third UE according to the second information.
  • the second request message may be one of the following: a PC5 unicast link release request message; a PC5 unicast link modification request message; or a dedicated request message for releasing a specific U2U relay link.
  • the second request message when the second request message is a PC5 unicast link modification request message, the second request message may further include second removal operation indication information; wherein the second removal operation indication information is used for releasing the U2U relay link.
  • the relay link release method in a scenario where multiple UEs (such as at least two source UEs or at least two target UEs) share the same relay UE, that is, in a U2U communication scenario that shares the relay UE, when a UE among the multiple UEs needs to release the U2U relay link between it and a specific UE, since the UE can send a release request message including first information indicating the specific UE to the relay UE, it can be ensured that the relay UE can accurately release the U2U link related to the specific UE. .
  • the relay link releasing method provided in the embodiment of the present application may further include the following step 405.
  • Step 405 The first UE maintains the U2U relay link with the fifth UE.
  • the fifth UE includes at least two UEs of the fourth UE except the second UE.
  • the first UE can still communicate with the UEs other than the second UE among the at least two fourth UEs through the relay UE.
  • the relay link release method provided in the embodiment of the present application may further include the following steps 406 and 407 .
  • Step 406 The relay UE sends a first reply message to the first UE.
  • Step 407 The first UE receives a first reply message.
  • the first reply message is used to indicate a release result of the U2U relay link related to the second UE.
  • step 405 may be performed before step 406 , before step 407 , or after step 407 .
  • the first reply message is a PC5 connection release accept message.
  • the first reply message is a PC5 unicast link modification accept message.
  • the first request message is a dedicated request message for releasing a specific U2U relay link, ie, a dedicated PC5-S message
  • the first reply message is a corresponding PC5-S acceptance message.
  • the relay UE can send a first reply message to the first UE after performing the release-related operations of the U2U relay link related to the second UE, the first UE can obtain the release result of the release-related operations of the U2U relay link based on the first reply message.
  • the relay link releasing method provided in the embodiment of the present application may further include at least one of the following steps 408 and 409.
  • Step 408 The relay UE maintains the PC5 unicast link with the sixth UE.
  • Step 409 The relay UE deletes the PC5 context of the second UE.
  • the sixth UE includes: at least two third UEs; and at least two fourth UEs other than the second UE.
  • the relay UE since the relay UE maintains the PC5 unicast link with the at least two third UEs and the UEs other than the second UE among the at least two fourth UEs, it can be ensured that the at least two third UEs and the UEs other than the second UE among the at least two fourth UEs continue to communicate through the relay UE.
  • the relay UE since the relay UE can delete the PC5 context of the second UE after releasing the first PC5 unicast link, the memory usage of the relay UE can be reduced and the space utilization of the relay UE can be improved.
  • the relay link release method provided in the embodiment of the present application may also include the following steps 410 and 411.
  • Step 410 The second UE receives a second request message sent by the relay UE.
  • the second request message is used to request the release of the relay link related to the second UE, and the second request message includes second information for indicating the first UE.
  • Step 411 The second UE releases the relay link related to the second UE in response to the second request message.
  • the second request message is sent by the relay UE when the first PC5 unicast link is a shared unicast link, and the first unicast link is a PC5 unicast link between the relay UE and the second UE.
  • step 410 and step 411 refer to the relevant descriptions in the above embodiments.
  • the second UE releases a relay link related to the second UE includes:
  • the second UE deletes the PC5 context related to the first UE in the first PC5 unicast link.
  • the second UE initiates a release procedure of the first PC5 unicast link.
  • the second UE deletes the PC5 context related to the first UE in the first PC5 unicast link
  • the first UE and the second UE can no longer communicate through the relay UE.
  • the PC5 context related to the first UE includes: the data transmission bearer used by the second UE to send data to the first UE, and information indicating the first UE
  • the second UE can no longer continue to communicate with the first UE.
  • the second request message is a PC5 unicast link modification request message
  • the second request message also includes second removal operation indication information
  • the second removal operation indication information is used to release the U2U relay link
  • the second UE releases the relay link related to the second UE, which may include: the second UE releases the relay link related to the second UE according to the second information and the second removal operation indication information.
  • the relay UE can determine the "U2U relay link related to the second UE" based on the second information, such as determining that the U2U relay link between the second UE and the first UE needs to be removed; and based on the first removal operation indication information, determine: “remove” or “release” this operation, that is, release related operations.
  • the U2U relay link related to the second UE can be accurately released through the second information and the second removal operation indication information added in the PC5 unicast link modification request message, the flexibility of releasing the relay link can be improved.
  • the second UE can still communicate with at least two third UEs other than the first UE through the relay UE after releasing the U2U relay link related to the second UE.
  • the relay link release method provided in the embodiment of the present application may further include the following step 412.
  • Step 412 The second UE maintains the first PC5 unicast link with the relay UE.
  • the second UE releases the relay link related to the second UE, since the second UE can maintain the first PC5 unicast link between the relay UE, it can ensure that the second UE can communicate with at least two third UEs other than the first UE, thereby improving the stability of the U2U relay communication system.
  • the relay link releasing method provided in the embodiment of the present application may further include the following steps 413 and 414.
  • Step 413 The second UE sends a second reply message to the relay UE.
  • Step 414 The relay UE receives the second reply message.
  • the second reply message is used to indicate the release result of the relay link related to the second UE.
  • the second reply message is a PC5 connection release acceptance message; if the second request message is a PC5 unicast link modification request message, the second reply message is a PC5 unicast link modification acceptance message; if the second request message is a dedicated request message for releasing a specific U2U relay link, that is, a dedicated PC5-S message, the second reply message is the corresponding PC5-S acceptance message.
  • step 406 is specifically performed after the above step 414; and the above step 406 can be specifically implemented by the following step 406a.
  • Step 406a The relay UE sends a first reply message to the first UE according to the second reply message.
  • the relay UE may send a first reply message to the first UE according to the release result indicated by the second reply message. For example, if the second reply message indicates that the relay link associated with the second UE is successfully released, the first reply message also indicates that the relay link associated with the second UE is successfully released; if the second reply message indicates that the release of the relay link associated with the second UE fails, the first reply message also indicates that the release of the relay link associated with the second UE fails.
  • the relay UE can receive the second reply message.
  • the relay UE can know the release result of the relay link related to the second UE; on the other hand, the relay UE can send the first reply message to the first UE based on the second reply message, so that the first UE can know the release result of the relay link related to the second UE. In this way, communication efficiency can be improved.
  • the relay link release method provided in the embodiment of the present application may include the following steps 701 to 703 .
  • Step 701 When a first condition is met, the first UE sends a first request message to the relay UE.
  • Step 702 The relay UE receives a first request message.
  • Step 703 The relay UE initiates a release process of the first PC5 unicast link in response to the first request message.
  • the first request message may include first information.
  • the relay link releasing method provided in the embodiment of the present application may further include the following step 704.
  • Step 704 The first UE maintains the U2U relay link with the fifth UE.
  • the fifth UE includes at least two UEs of the fourth UE except the second UE.
  • the relay link releasing method provided in the embodiment of the present application may further include the following steps 705 and 706.
  • Step 705 The relay UE sends a first reply message to the first UE.
  • Step 706 The first relay UE receives the first reply message.
  • steps 701 to 706 please refer to the relevant description in the above embodiment, which will not be described again to avoid repetition.
  • the first condition includes: the second UE is a UE in at least two fourth UEs connected to the first UE through the relay UE.
  • the first UE is the source UE, and the at least two fourth UEs include: target UE#1, #2, #3; the first information indicates the target UE#1.
  • the PC5 unicast link between the source UE and the relay UE is shared by the target UE#1, #2, #3.
  • the relay link release method provided in this example may include:
  • Step 81 The source UE sends a first request message to the relay UE.
  • the relay UE can receive the first request message.
  • the first request message can be at least one of the following messages: PC5 link release request message (i.e. PC5 unicast link release request message), PC5 link modification request message (PC5 unicast link modification request message), dedicated end-to-end U2U relay link release message (i.e. a dedicated request message for releasing a specific U2U relay link, that is, defining a new PC5-S message).
  • PC5 link release request message i.e. PC5 unicast link release request message
  • PC5 link modification request message PC5 unicast link modification request message
  • dedicated end-to-end U2U relay link release message i.e. a dedicated request message for releasing a specific U2U relay link, that is, defining a new PC5-S message.
  • the first request message is a PC5 link release request message or a dedicated end-to-end U2U relay connection release message:
  • the first request message includes the first information
  • the first request message is used to request the message relay UE to release the end-to-end U2U relay link between the source UE and a specific target UE (such as target UE#1).
  • the first information may include at least one of the following: an identifier of the target UE#1, an IP address of the target UE#1, a MAC address of the target UE#1, and a layer 2 identifier of the target UE#1.
  • the first request message is used to request the message relay UE to release the U2U relay links between the source UE and all target UEs (ie, target UEs #1, #2, and #3).
  • the first request message when the first request message PC5 link modification is requested, includes, in addition to the first information, first removal operation indication information, and the first removal operation indication information is used to release the U2U relay link.
  • Step 82 The relay UE initiates a PC5 unicast link release process with at least one target UE in response to the first request message.
  • the first request message is a PC5 unicast link release request message or a dedicated request message for releasing a specific U2U relay link:
  • the relay UE initiates a PC5 unicast link release process with all target UEs.
  • the relay UE initiates a PC5 unicast link release process with the target UE#1 (such as the target UE#1 in the above figure). Further optionally, after the relay initiates a PC5 unicast link release process with the specific target UE, the relay UE may also maintain the PC5 unicast link with the source UE; And/or, delete the PC5 context of the target UE#1 corresponding to the source UE.
  • the relay UE can specifically initiate a PC5 unicast link release process with a specific target UE (such as target UE#1 in the above figure) based on the first information and the first removal operation indication information. Further optionally, after the relay UE initiates a PC5 unicast link release process with a specific target UE, the relay UE can also delete the PC5 context of the target UE (such as target UE#1) corresponding to the source UE.
  • the relay link releasing method provided in this example may further include the following step 83.
  • Step 83 The relay UE sends a first reply message to the source UE.
  • the source UE can receive the first reply message.
  • the first reply message is used to instruct the relay UE to release the release result of the U2U relay link between the source UE and all target UEs or specific target UEs.
  • a bidirectional arrow in FIG. 8 is used to represent: a PC5 unicast link between a UE (source UE or target UE) and a relay UE.
  • scenario 1 for the shared U2U relay connection scenario, when the source UE needs to release a specific end-to-end U2U relay connection: the source UE instructs the relay UE to release the end-to-end U2U relay connection for the specific target UE, and the relay UE releases the PC5 link connection with the specific target UE according to the instruction, and retains the PC5 link connection between the relay UE and the source UE.
  • the relay link release method provided in the embodiment of the present application may include the following steps 91 to 95 .
  • Step 91 When a first condition is met, the first UE sends a first request message to the relay UE.
  • Step 92 The relay UE receives the first request message.
  • Step 93 The relay UE sends a second request message to the second UE in response to the first request message.
  • Step 94 The second UE receives the second request message.
  • Step 95 In response to the second request message, the second UE deletes the PC5 context associated with the first UE in the first unicast link. In other words, the second UE can delete the PC5 context of the first UE corresponding to the second UE.
  • the relay link releasing method provided in the embodiment of the present application may further include the following steps 96 and 97.
  • Step 96 The second UE sends a second reply message to the first UE.
  • Step 97 The relay UE receives the second reply message.
  • the relay link releasing method provided in the embodiment of the present application may further include the following steps 98 and 99.
  • Step 98 The relay UE sends a first reply message to the first UE based on the second reply message.
  • Step 99 The first UE receives a first reply message.
  • steps 91 to 99 please refer to the relevant description in the above embodiment, which will not be described again to avoid repetition.
  • the first condition includes: the second UE is a UE in at least two fourth UEs connected to the first UE via the relay UE.
  • the at least two third UEs include: the source UE UE#1, #2, #3; the first information indicates the target UE#1.
  • the PC5 unicast link between the target UE and the relay UE is shared by the source UE#1, #2, #3.
  • the relay link release method provided in this example may include:
  • Step 101 The source UE sends a first request message to the relay UE.
  • the relay UE can receive the first request message.
  • Step 102 The relay UE sends a second request message to the target UE in response to the PC5 unicast link release request message.
  • the target UE can receive the second request message.
  • the second request message can be at least one of the following messages: PC5 link release request message, PC5 link modification request message, dedicated end-to-end U2U relay connection release message (defining a new PC5-S message).
  • the second request message is a PC5 link release request message or a dedicated end-to-end U2U relay connection release message:
  • the second request message includes the second information
  • the second request message is used to request the target UE to release the end-to-end U2U relay link between the target UE and the specific source UE. If the second request message does not include the second information, the second request message is used to request the target UE to release the end-to-end U2U relay link between the target UE and all source UEs.
  • the second information may include at least one of the following:
  • Source UE identifier i.e., the identifier of the source UE#3 mentioned above
  • the IP address or MAC address of the source UE (such as the IP address or MAC address of the source UE#3 above);
  • the L2 identifier of the source UE (such as the layer 2 identifier of the source UE#3 mentioned above).
  • the PC5 link modification request message includes, in addition to the second information, a "remove" operation indication (i.e., second removal operation indication information), and the second removal operation indication information is used to instruct the target UE to release the end-to-end U2U relay link between the target UE and a specific source UE.
  • a "remove" operation indication i.e., second removal operation indication information
  • Step 103 The target UE initiates a PC5 unicast link release process with at least one source UE in response to the second request message.
  • the second request is a PC5 link release request or a dedicated end-to-end U2U relay connection release message:
  • the target UE executes the PC5 unicast link release process with the relay UE, that is, releases the end-to-end relay communication link between the target UE and all source UEs.
  • the target UE executes the following operations: retaining the PC5 unicast link with the relay UE and deleting the PC5 context of the source UE corresponding to the target UE.
  • the target UE deletes the PC5 context of the source UE (i.e., source UE#1) corresponding to the target UE according to the second information and the second removal operation indication information.
  • Step 104 The target UE sends a second reply message to the relay UE.
  • the relay UE can receive the second reply message.
  • Step 105 The relay sends a first reply message to the source UE#3.
  • the source UE#2 can receive the first reply message.
  • the source UE needs to release the specific end to
  • the source UE instructs the relay UE to release the end-to-end U2U relay connection to the specific target UE;
  • the relay UE can instruct the target UE to release the end-to-end U2U relay connection to the specific source UE according to the first request message, and the target UE deletes the PC5 link context with the source UE according to the instruction, and retains the PC5 link connection with the relay UE.
  • the relay link release method provided in the embodiment of the present application may be executed by a relay link release device.
  • the relay link release method executed by the relay link release device is taken as an example to illustrate the relay link release device provided in the embodiment of the present application.
  • FIG11 shows a schematic structural diagram of the relay link release device provided by the embodiment of the present application.
  • the relay link release device 110 provided by the embodiment of the present application may include: a sending module 111.
  • a sending module 111 configured to send a first request message to the relay UE when a first condition is met, where the first request message is used to request to release the U2U relay link associated with the second UE;
  • the first condition includes at least one of the following:
  • the first UE is a UE among at least two third UEs connected to the second UE through the relay UE;
  • the second UE is a UE among at least two fourth UEs connected to the first UE through the relay UE.
  • the first information when the first request message includes first information for indicating the second UE, includes at least one of the following: an identifier of the second UE; an Internet Protocol IP address of the second UE; a layer 2 identifier of the second UE; or a MAC address of the second UE.
  • the first request message is one of the following: a PC5 unicast link release request message; a PC5 unicast link modification request message; or a dedicated request message for releasing a specific U2U relay link.
  • the first request message when the first request message is a PC5 unicast link modification request message, the first request message also includes first removal operation indication information; wherein the first removal operation indication information is used for releasing the U2U relay link.
  • the relay link releasing device 110 further includes: a first receiving module
  • the first receiving module is used to receive a first reply message sent by the relay UE after the sending module 111 sends the first request message to the relay UE, where the first reply message is used to indicate a release result of the U2U relay link related to the second UE.
  • the relay link release device 110 also includes: a processing module; a processing module, used to maintain the U2U relay link between the fifth UE and the fifth UE after the sending module 111 sends a first request message to the relay UE; wherein the fifth UE includes at least two UEs among the fourth UEs except the second UE.
  • the above-mentioned U2U relay link related to the second UE includes any one of the following: a first PC5 unicast link between the relay UE and the second UE; a PC5 context related to the first UE in the first PC5 unicast link.
  • the relay link release device in a scenario where multiple UEs (such as at least two source UEs or at least two target UEs) share the same relay UE, that is, in a U2U communication scenario of a shared relay UE, when the relay link release device in the multiple UEs needs to release the U2U relay link between it and a specific UE, since the relay link release device can send a release request message including first information indicating the specific UE to the relay UE, it can ensure that the relay UE can accurately release the U2U link related to the specific UE.
  • FIG. 12 shows a structural schematic diagram of the relay link release device provided by the embodiment of the present application.
  • the relay link release device 120 provided by the embodiment of the present application may include: a receiving module 121 and a processing module 122.
  • the receiving module 121 is configured to receive a first request message sent by the first UE, where the first request message is used to release a U2U relay link associated with the second UE;
  • the processing module 122 is configured to perform a release-related operation on the U2U relay link related to the second UE in response to the first request message received by the receiving module 121;
  • the first request message is sent by the first UE when a first condition is met, and the first condition includes at least one of the following:
  • the first UE is a UE among at least two third UEs connected to the second UE through the relay UE;
  • the second UE is a UE among at least two fourth UEs connected to the first UE through the relay UE.
  • processing module 122 is specifically configured to:
  • the first PC5 unicast link is a non-shared unicast link, initiating a release process of the first PC5 unicast link;
  • the first PC5 unicast link is a PC5 unicast link between the relay UE and the second UE;
  • the second request message is used to request the release of the U2U relay link related to the second UE, and the second request message includes second information for indicating the first UE.
  • the first request message includes first information for indicating the second UE, and the first information includes at least one of the following: an identifier of the second UE; an IP address of the second UE; a layer 2 identifier of the second UE; or a MAC address of the second UE.
  • the processing module 122 is also used to maintain the PC5 unicast link with the sixth UE after initiating the release process of the first PC5 unicast link; and/or, delete the PC5 context of the second UE; wherein the sixth UE includes: at least two third UEs; and at least two fourth UEs other than the second UE.
  • the first request message is one of the following: a PC5 unicast link release request message; a PC5 unicast link modification request message; or a dedicated request message for releasing a specific U2U relay link.
  • the first request message is a PC5 unicast link modification request message, and the first request message also includes first removal operation indication information;
  • the processing module 122 is specifically configured to execute a release-related operation on the U2U relay link related to the second UE according to the first removal operation indication information and the first information.
  • the second information includes at least one of the following: an identifier of the first UE; an IP address of the first UE; a layer 2 identifier of the first UE; or a MAC address of the first UE.
  • the second request message is one of the following: a PC5 unicast link release request message; a PC5 unicast link modification request message; or a dedicated request message for releasing a specific U2U relay link.
  • the second request message is a PC5 unicast link modification request message, and the second request message also includes second removal operation indication information; wherein the second removal operation indication information is used for releasing the U2U relay link.
  • the relay link releasing device 120 further includes: a sending module
  • the sending module is used to send a first reply message to the first UE after the processing module 122 performs the release-related operation on the U2U relay link related to the second UE, where the first reply message is used to indicate the release result of the U2U relay link related to the second UE.
  • the receiving module 121 is further configured to receive a second reply message sent by the second UE before the sending module sends the first reply message to the first UE, where the second reply is used to indicate a release result of the U2U relay link related to the second UE;
  • the sending module is specifically used to send a first reply message to the first UE according to the second reply message.
  • the relay link release device when a first request message is received requesting the first UE to release the relay link related to the second UE, since only the relay link related to the specific UE can be released according to the request message, it can be ensured that the first UE and/or the second UE can continue to communicate with other UEs through the relay UE, thereby improving the stability performance of the communication system.
  • FIG. 13 shows a structural schematic diagram of the relay link release device provided by the embodiment of the present application.
  • the relay link release device 130 provided by the embodiment of the present application may include: a receiving module 131 and a processing module 132.
  • the receiving module 131 is used to receive a second request message sent by the relay UE, where the second request message is used to request to release the relay link related to the second UE, and the second request message includes second information used to indicate the first UE, and the first UE is connected to the second UE through the relay UE;
  • the processing module 132 is configured to release the relay link related to the second UE in response to the second request message received by the receiving module 131;
  • the second request message is sent by the relay UE when the first PC5 unicast link is a shared unicast link, and the first unicast link is a PC5 unicast link between the relay UE and the second UE.
  • the processing module 132 is specifically configured to delete the PC5 context related to the first UE in the first PC5 unicast link.
  • the second information includes at least one of the following: an identifier of the first UE; an IP address of the first UE; a layer 2 identifier of the first UE; or a MAC address of the first UE.
  • the second request message is one of the following: a PC5 unicast link release request message; a PC5 unicast link modification request message; or a dedicated request message for releasing a specific U2U relay link.
  • the second request message is a PC5 unicast link release request message or a PC5 unicast link modification request message
  • the processing module 132 is further configured to maintain the first PC5 unicast link after the receiving module 131 receives the second request message sent by the relay UE.
  • the second request message is a PC5 unicast link modification request message, and the second request message also includes second removal operation indication information, and the second removal operation indication information is used for releasing the U2U relay link;
  • the processing module 132 is specifically configured to release the relay link related to the second UE according to the second information and the second removal operation indication information.
  • the relay link release device 130 further includes: a sending module.
  • the sending module is used to send a second reply message to the relay UE after the processing module 132 releases the relay link related to the second UE, and the second reply message is used to indicate the release result of the relay link related to the second UE.
  • the relay link release device when the first UE needs to release the U2U relay link related to the relay link release device, and the PC5 unicast link between the relay UE and the relay link release device is a shared unicast link, since the release operation of the U2U relay link related to the relay link release device can be performed by the relay link release device, it can be ensured that the relay link release device can still communicate with at least two third UEs other than the first UE through the relay UE after releasing the U2U relay link related to the relay link release device.
  • the relay link release device in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip.
  • the electronic device can be a terminal, or it can be other devices other than a terminal.
  • the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.
  • the relay link release device provided in the embodiment of the present application can implement the various processes implemented by the method embodiments of Figures 4 to 10 and achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • an embodiment of the present application further provides a communication device 1400, including a processor 1401 and a memory 1402, and the memory 1402 stores programs or instructions that can be executed on the processor 1401.
  • the communication device 1400 is a terminal
  • the program or instruction is executed by the processor 1401 to implement the various steps of the above-mentioned relay link release method embodiment, and can achieve the same technical effect.
  • the communication device 1400 is a communication device corresponding to the first UE-side method
  • the program or instruction is executed by the processor 1401 to implement the various steps performed by the first UE in the above-mentioned relay link release method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • the program or instruction is processed
  • the program or instruction is executed by the processor 1401 to implement the various steps performed by the second UE in the above-mentioned relay link release method embodiment, and can achieve the same technical effect. To avoid repetition, it is not repeated here.
  • the communication device 1400 is a communication device corresponding to the second UE side method
  • the program or instruction is executed by the processor 1401, it implements the various steps performed by the second UE in the above-mentioned relay link release method embodiment, and can achieve the same technical effect. To avoid repetition, it is not repeated here.
  • An embodiment of the present application also provides a communication device, including a processor and a communication interface.
  • the processor is used to determine whether the first condition is met, and the communication interface is used to send a first request message to the relay UE when the first condition is met, and the first request message is used to request the release of the U2U relay link associated with the second UE.
  • This terminal embodiment corresponds to the above-mentioned first UE side method embodiment, and each implementation process and implementation method of the above-mentioned relay UE side method embodiment can be applied to this terminal embodiment and can achieve the same technical effect.
  • the communication interface is used to receive a first request message sent by a first UE, and the first request message is used to release a U2U relay link related to a second UE; the processor is used to perform release-related operations on the U2U relay link related to the second UE in response to the first request message received by the communication interface.
  • the first request message is sent by the first UE when a first condition is met, and the first condition includes at least one of the following: the first UE is a UE among at least two third UEs connected to the second UE through a relay UE; the second UE is a UE among at least two fourth UEs connected to the first UE through a relay UE.
  • This terminal embodiment corresponds to the above-mentioned relay UE side method embodiment, and each implementation process and implementation method of the above-mentioned relay UE side method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • the communication interface is used to receive a second request message sent by the relay UE, the second request message is used to request the release of the relay link related to the second UE, the second request message includes second information for indicating the first UE, and the first UE and the second UE are connected through the relay UE; the processor is used to release the relay link related to the second UE in response to the second request message.
  • the second request message is sent by the relay UE when the first PC5 unicast link is a shared unicast link, and the first unicast link is a PC5 unicast link between the relay UE and the second UE.
  • This terminal embodiment corresponds to the above-mentioned second UE side method embodiment, and each implementation process and implementation method of the above-mentioned second UE side method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG15 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.
  • the terminal 1500 includes but is not limited to: a radio frequency unit 1501, a network module 1502, an audio output unit 1503, an input unit 1504, a sensor 1505, a display unit 1506, a user input unit 1507, an interface unit 1508, a memory 1509 and at least some of the components of the processor 1510.
  • the terminal 1500 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 1510 through a power management system, so as to implement functions such as managing charging, discharging, and power consumption management through the power management system.
  • a power source such as a battery
  • the terminal structure shown in FIG15 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange components differently, which will not be described in detail here.
  • the radio frequency unit 1501 is used to send a first request message to the relay UE when the first condition is met, where the first request message is used to request to release the U2U relay link related to the second UE;
  • the first condition includes at least one of the following:
  • the first UE is a UE among at least two third UEs connected to the second UE through the relay UE;
  • the second UE is a UE among at least two fourth UEs connected to the first UE through the relay UE.
  • the first request message includes first information for indicating the second UE, and the first information includes at least one of the following: an identifier of the second UE; an Internet Protocol IP address of the second UE; a layer 2 identifier of the second UE; or a MAC address of the second UE.
  • the first request message is one of the following:
  • the first request message when the first request message is a PC5 unicast link modification request message, the first request message further includes first removal operation indication information;
  • the first removal operation indication information is used for releasing the U2U relay link.
  • the first radio frequency unit 1501 is used to receive a first reply message sent by the relay UE after sending a first request message to the relay UE, where the first reply message is used to indicate a release result of the U2U relay link related to the second UE.
  • the processor 1510 is configured to maintain the U2U relay link with the fifth UE after the radio frequency unit 1501 sends the first request message to the relay UE;
  • the fifth UE includes at least two UEs of the fourth UE except the second UE.
  • the U2U relay link related to the second UE includes any one of the following:
  • the PC5 context associated with the first UE in the first PC5 unicast link is associated with the first UE in the first PC5 unicast link.
  • the terminal improved by the embodiments of the present application, in a scenario where multiple UEs (such as at least two source UEs or at least two target UEs) share the same relay UE, that is, in a U2U communication scenario of a shared relay UE, when a terminal among the multiple UEs needs to release the U2U relay link between it and a specific UE, since the terminal can send a release request message including first information indicating the specific UE to the relay UE, it can be ensured that the relay UE can accurately release the U2U link related to the specific UE.
  • the radio frequency unit 1501 is used to receive a first request message sent by the first UE, where the first request message is used to release the U2U relay link related to the second UE; optionally, the first request message includes first information used to indicate the second UE;
  • the processor 1510 is configured to perform a release-related operation on a U2U relay link related to a second UE in response to a first request message received by the radio frequency unit 1501;
  • the first request message is sent by the first UE when a first condition is met, and the first condition includes at least one of the following:
  • the first UE is a UE among at least two third UEs connected to the second UE through the relay UE;
  • the second UE is a UE among at least two fourth UEs connected to the first UE through the relay UE.
  • the processor 1510 is specifically configured to:
  • the first PC5 unicast link is a non-shared unicast link, initiating a release process of the first PC5 unicast link;
  • the first PC5 unicast link is a PC5 unicast link between the relay UE and the second UE;
  • the second request message is used to request the release of the U2U relay link related to the second UE, and the second request message includes second information for indicating the first UE.
  • the first request message includes first information for indicating the second UE, and the first information includes at least one of the following: an identifier of the second UE; an IP address of the second UE; a layer 2 identifier of the second UE; or a MAC address of the second UE.
  • the processor 1510 is further configured to maintain the PC5 unicast link with the sixth UE after initiating the release process of the first PC5 unicast link; and/or delete the PC5 context of the second UE;
  • the sixth UE includes: at least two third UEs; and at least two fourth UEs other than the second UE.
  • the first request message is one of the following: a PC5 unicast link release request message; a PC5 unicast link modification request message; or a dedicated request message for releasing a specific U2U relay link.
  • the first request message is a PC5 unicast link modification request message, and the first request message also includes first removal operation indication information;
  • the processor 1510 is specifically configured to perform a release-related operation on a U2U relay link related to the second UE according to the first removal operation indication information and the first information.
  • the second information includes at least one of the following: an identifier of the first UE; an IP address of the first UE; a layer 2 identifier of the first UE; or a MAC address of the first UE.
  • the second request message is one of the following: a PC5 unicast link release request message; a PC5 unicast link modification request message; or a dedicated request message for releasing a specific U2U relay link.
  • the second request message is a PC5 unicast link modification request message, and the second request message also includes second removal operation indication information; wherein the second removal operation indication information is used for releasing the U2U relay link.
  • the radio frequency unit 1501 is used to send a first reply message to the first UE after the processor 1510 performs a release-related operation on the U2U relay link related to the second UE, and the first reply message is used to indicate the release result of the U2U relay link related to the second UE.
  • the radio frequency unit 1501 is further configured to receive a second reply message sent by the second UE before sending the first reply message to the first UE, where the second reply is used to indicate a release result of the U2U relay link related to the second UE;
  • the radio frequency unit 1501 is specifically configured to send a first reply message to the first UE according to the second reply message.
  • the terminal when a first request message is received requesting the first UE to release a relay link related to a second UE, since only the relay link related to the specific UE can be released according to the request message, it can be ensured that the first UE and/or the second UE can continue to communicate with other UEs through the relay UE, thereby improving the stability performance of the communication system.
  • the radio frequency unit 1501 is used to receive a second request message sent by the relay UE, the second request message is used to request to release the relay link related to the second UE, the second request message includes second information used to indicate the first UE, and the first UE is connected to the second UE through the relay UE;
  • the processor 1510 is configured to release the relay link related to the second UE in response to the second request message received by the radio frequency unit 1501;
  • the second request message is sent by the relay UE when the first PC5 unicast link is a shared unicast link, and the first unicast link is a PC5 unicast link between the relay UE and the second UE.
  • the processor 1510 is specifically configured to delete a PC5 context related to the first UE in the first PC5 unicast link.
  • the second information includes at least one of the following: an identifier of the first UE; an IP address of the first UE;
  • Layer 2 identification of the first UE MAC address of the first UE.
  • the second request message is one of the following: a PC5 unicast link release request message; a PC5 unicast link modification request message; or a dedicated request message for releasing a specific U2U relay link.
  • the second request message is a PC5 unicast link release request message or a PC5 unicast link modification request message
  • the processor 1510 is further configured to maintain the first PC5 unicast link after the radio frequency unit 1501 receives the second request message sent by the relay UE.
  • the second request message is a PC5 unicast link modification request message, and the second request message also includes second removal operation indication information, and the second removal operation indication information is used for releasing the U2U relay link;
  • the processor 1510 is specifically configured to release the relay link related to the second UE according to the second information and the second removal operation indication information.
  • the terminal further includes: a radio frequency unit 1501.
  • the radio frequency unit 1501 is configured to send a second reply message to the relay UE after the processor 1510 releases the relay link related to the second UE, where the second reply message is used to indicate a release result of the relay link related to the second UE.
  • the terminal when the first UE needs to release the U2U relay link related to the terminal, and the PC5 unicast link between the relay UE and the terminal is a shared unicast link, since the terminal can perform the release operation of the U2U relay link related to the terminal, it can be ensured that the terminal can still communicate with at least two third UEs other than the first UE through the relay UE after releasing the U2U relay link related to the terminal.
  • the input unit 1504 may include a graphics processing unit (Graphics Processing Unit, GPU) 15041 and a microphone 15042, and the graphics processor 15041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode.
  • the display unit 1506 may include a display panel 15061, and the display panel 15061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc.
  • the user input unit 1507 includes a touch panel 15071 and at least one of other input devices 15072.
  • the touch panel 15071 is also called a touch screen.
  • the touch panel 15071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 15072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.
  • the radio frequency unit 1501 can transmit the data to the processor 1510 for processing; in addition, the radio frequency unit 1501 can send uplink data to the network side device.
  • the radio frequency unit 1501 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.
  • the memory 1509 can be used to store software programs or instructions and various data.
  • the memory 1509 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc.
  • the memory 1509 may include a volatile memory or a non-volatile memory, or the memory 1509 may include both volatile and non-volatile memories.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM).
  • the memory 1509 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.
  • the processor 1510 may include one or more processing units; optionally, the processor 1510 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1510.
  • An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored.
  • a program or instruction is stored.
  • each process of the above-mentioned relay link release method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
  • the processor is a processor in the terminal described in the above embodiment.
  • the readable storage medium may be non-volatile or non-transient.
  • the readable memory may include a computer-readable storage medium. Such as computer read-only memory ROM, random access memory RAM, disk or CD-ROM, etc.
  • An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned relay link release method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.
  • An embodiment of the present application further provides a computer program/program product, which is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the various processes of the above-mentioned relay link release method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • the embodiment of the present application also provides a communication system, which includes: a communication device corresponding to the first UE side method embodiment and a communication device corresponding to the relay UE side method embodiment.
  • the communication device corresponding to the first UE side method embodiment is used to execute the steps in the first UE side method embodiment
  • the communication device corresponding to the relay UE side method embodiment is used to execute the steps in the relay UE side method embodiment.
  • the communication system includes: a communication device corresponding to the first UE-side method embodiment, a communication device corresponding to the relay UE-side method embodiment, and a communication device corresponding to the second UE-side method embodiment.
  • the communication device corresponding to the first UE-side method embodiment is used to execute the steps in the first UE-side method embodiment
  • the communication device corresponding to the relay UE-side method embodiment is used to execute the steps in the relay UE-side method embodiment
  • the communication device corresponding to the second UE-side method embodiment is used to execute the steps in the second UE-side method embodiment.
  • the technical solution of the present application can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.
  • a storage medium such as ROM/RAM, a magnetic disk, or an optical disk
  • a terminal which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande se rapporte au domaine technique des communications, et divulgue un procédé et un appareil de libération de liaison de relais, et un dispositif de communication. Le procédé de libération de liaison de relais de modes de réalisation de la présente demande comprend : lorsqu'une première condition est satisfaite, un premier équipement utilisateur (UE) envoie un premier message de demande à un UE relais, le premier message de demande étant utilisé pour demander de libérer une liaison relais U2U associée à un deuxième UE, et la première condition comprenant au moins l'un des éléments suivants : le premier UE est un UE dans au moins deux troisièmes UE connectés au deuxième UE au moyen de l'UE relais, et le deuxième UE est un UE dans au moins deux quatrièmes UE connectés au premier UE au moyen de l'UE relais.
PCT/CN2023/127780 2022-11-04 2023-10-30 Procédé et appareil de libération de liaison de relais, et dispositif de communication WO2024093919A1 (fr)

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CN202211380001.4A CN118042651A (zh) 2022-11-04 2022-11-04 中继链路释放方法、装置及通信设备
CN202211380001.4 2022-11-04

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