WO2024093919A1 - 中继链路释放方法、装置及通信设备 - Google Patents

中继链路释放方法、装置及通信设备 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)
French (fr)
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/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/30Connection release
    • H04W76/34Selective release of ongoing connections
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/04Terminal 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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Abstract

本申请公开了一种中继链路释放方法、装置及通信设备,属于通信技术领域,本申请实施例的中继链路释放方法包括:在满足第一条件的情况下,第一用户设备UE向中继UE发送第一请求消息,第一请求消息用于请求释放与第二UE相关的U2U中继链接;其中,第一条件包括以下至少之一:第一UE为通过中继UE与第二UE连接的至少两个第三UE中的UE;第二UE为通过中继UE与第一UE连接的至少两个第四UE中的UE。

Description

中继链路释放方法、装置及通信设备
相关申请的交叉引用
本申请主张在2022年11月04日在中国提交申请号为202211380001.4的中国专利的优先权,其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域,具体涉及一种中继链路释放方法、装置及通信设备。
背景技术
相关技术中引入了端到端(UE(User Equipment)to UE,U2U)中继通信***,以通过中继UE实现源UE与目标UE之间的通信。
在U2U中继通信***中,可能存在共享端到端直连通信接口连接(PC5 link),简称为PC5连接的需求,多个目标UE共享源UE与中继UE之间的PC5 link,或者多个源UE共享中继UE与目标UE之间的PC5 link。
然而,在共享PC5 link的场景中,其链路释放过程并未明晰。因此,如何在共享U2U中继通信场景中正确实现的特定端到端U2U中继通信连接释放,是亟待解决的问题。
发明内容
本申请实施例提供一种中继链路释放方法、装置及通信设备,能够解决在共享U2U中继通信场景中正确实现的特定端到端U2U中继通信连接释放的问题。
第一方面,提供了一种中继链路释放方法,该方法包括:在满足第一条件的情况下,第一UE向中继UE发送第一请求消息,第一请求消息用于请求释放与第二UE相关的U2U中继链接;其中,第一条件包括以下至少之一:第一UE为通过中继UE与第二UE连接的至少两个第三UE中的UE;第二UE为通过中继UE与第一UE连接的至少两个第四UE中的UE。
第二方面,提供了一种中继链路释放装置,该装置可以包括:接收模块和处理模块。接收模块,用于接收第一UE发送的第一请求消息,第一请求消息用于释放与第二UE相关的U2U中继链接;处理模块,用于响应于接收模块接收的第一请求消息,执行对与第二UE相关的U2U中继链接的释放相关操作;其中,第一请求消息是第一UE在满足第一条件的情况下发送的,第一条件包括以下至少之一:第一UE为通过中继UE与第二UE连接的至少两个第三UE中的UE;第二UE为通过中继UE与第一UE连接的至少两个第四UE中的UE。
第三方面,提供了一种中继链路释放方法,该方法包括:中继UE接收第一UE发送的第一请求消息,第一请求消息用于释放与第二UE相关的U2U中继链接;中继UE响应于第一请求消息,执行对与第二UE相关的U2U中继链接的释放相关操作;其中,第一请求消息是第一UE在满足第一条件的情况下发送的,第一条件包括以下至少之一:第一UE为通过中继UE与第二UE连接的至少两个第三UE中的UE;第二UE为通过中继UE与第一UE连接的至少两个第四UE中的UE。
第四方面,提供了一种中继链路释放装置,该装置可以包括:接收模块和处理模块;接收模块,用于接收第一UE发送的第一请求消息,第一请求消息用于释放与第二UE相关的U2U中继链接;处理模块,用于响应于接收模块接收的第一请求消息,执行对与第二UE相关的U2U中继链接的释放相关操作;其中,第一请求消息是第一UE在满足第一条件的情况下发送的,第一条件包括以下至少之一:第一UE为通过中 继UE与第二UE连接的至少两个第三UE中的UE;第二UE为通过中继UE与第一UE连接的至少两个第四UE中的UE。
第五方面,提供了一种中继链路释放方法,该方法包括:第二UE接收中继UE发送的第二请求消息,第二请求消息用于请求释放与第二UE相关的中继链接,第二请求消息包括用于指示第一UE的第二信息,第一UE与第二UE通过中继UE连接;第二UE响应于第二请求消息,释放与第二UE相关的中继链接;
其中,第二请求消息是中继UE在第一PC5单播链接为共享单播链接的情况下发送的,第一单播链接为中继UE与第二UE之间的PC5单播链接。
第六方面,提供了一种中继链路释放装置,该装置可以包括:接收模块和处理模块。接收模块,用于接收中继UE发送的第二请求消息,第二请求消息用于请求释放与第二UE相关的中继链接,第二请求消息包括用于指示第一UE的第二信息,第一UE与第二UE通过中继UE连接;处理模块,用于响应于接收模块接收的第二请求消息,释放与第二UE相关的中继链接;其中,第二请求消息是中继UE在第一PC5单播链接为共享单播链接的情况下发送的,第一单播链接为中继UE与第二UE之间的PC5单播链接。
第七方面,提供了一种通信设备,该通信设备包括处理器和存储器,存储器存储可在处理器上运行的程序或指令,程序或指令被处理器执行时实现如第一方面的方法的步骤。
第八方面,提供了一种通信设备,该通信设备包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第三方面所述的方法的步骤。
第九方面,提供了一种通信设备,该通信设备包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第五方面所述的方法的步骤。
第十方面,提供了一种终端,包括处理器及通信接口,其中,所述处理器用于判断是否满足第一条件,所述通信接口用于在满足第一条件的情况下,向中继UE发送第一请求消息,所述第一请求消息用于请求释放与第二UE相关的U2U中继链接。
第十一方面,提供了一种终端,包括处理器及通信接口,其中,所述通信接口用于接收第一UE发送的第一请求消息,所述第一请求消息用于释放与第二UE相关的U2U中继链接;所述处理器用于响应于通信接口接收的第一请求消息,执行对所述与第二UE相关的U2U中继链接的释放相关操作。其中,所述第一请求消息是所述第一UE在满足第一条件的情况下发送的,所述第一条件包括以下至少之一:所述第一UE为通过所述中继UE与所述第二UE连接的至少两个第三UE中的UE;所述第二UE为通过所述中继UE与所述第一UE连接的至少两个第四UE中的UE。
第十二方面,提供了一种终端,包括处理器及通信接口,其中,所述通信接口用于接收中继UE发送的第二请求消息,所述第二请求消息用于请求释放与所述第二UE相关的中继链接,所述第二请求消息包括用于指示第一UE的第二信息,所述第一UE与所述第二UE通过所述中继UE连接;所述处理器用于响应于所述第二请求消息,释放所述与第二UE相关的中继链接。其中,所述第二请求消息是所述中继UE在第一PC5单播链接为共享单播链接的情况下发送的,所述第一单播链接为所述中继UE与所述第二UE之间的PC5单播链接。
第十三方面,提供了一种通信***,包括上述第七方面和第八方面所述的通信设备;所述第七方面所述的通信设备用于执行上述第一方面所述的中继链路释放方法的步骤,所述第八方面所述的通信设备用于执行上述第三方面所述的中继链路释放方法的步骤。或者包括上述第七方面、第八方面和第九方面所述的通信设备;所述第七方 面所述的通信设备用于执行上述第一方面所述的中继链路释放方法的步骤,所述第八方面所述的通信设备用于执行上述第三方面所述的中继链路释放方法的步骤,所述第九方面所述的通信设备用于执行上述第五方面所述的中继链路释放方法的步骤。
第十四方面,提供了一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如第一方面所述的方法、第三方面所述的方法,或者第五方面所述的方法的步骤。
第十五方面,提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如第一方面所述的方法、第三方面所述的方法,或者第五方面所述的方法。
第十六方面,提供了一种计算机程序/程序产品,所述计算机程序/程序产品被存储在存储介质中,所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面所述的方法、第三方面所述的方法,或者第五方面所述的方法的步骤。
在本申请实施例中,在满足第一条件的情况下,第一用户设备UE向中继UE发送第一请求消息,所述第一请求消息用于请求释放与第二UE相关的U2U中继链接;其中,所述第一条件包括以下至少之一:所述第一UE为通过所述中继UE与所述第二UE连接的至少两个第三UE中的UE;所述第二UE为通过所述中继UE与所述第一UE连接的至少两个第四UE中的UE。通过该方案,在多个UE(如至少两个源UE或至少两个目标UE)共用相同中继UE的场景中,即在共享中继UE的U2U通信场景中,当该多个UE中的UE需要释放其与特定UE之间U2U中继链接时,由于该UE可以向中继UE发送对应的释放请求消息,因此可以确保中继UE可以准确地对与特定UE相关的U2U链路进行释放。
附图说明
图1是本申请实施例可应用的一种无线通信***的框图之一;
图2是本申请实施例可应用的一种无线通信***的框图之二;
图3是本申请实施例可应用的一种无线通信***的框图之三;
图4是本申请实施例提供的一种中继链接释放方法的流程示意图之一;
图5是本申请实施例提供的一种中继链接释放方法的流程示意图之二;
图6是本申请实施例提供的一种中继链接释放方法的流程示意图之三;
图7是本申请实施例提供的一种中继链接释放方法的流程示意图之四;
图8是本申请实施例可应用的一种无线通信***的框图之四;
图9是本申请实施例提供的一种中继链接释放方法的流程示意图之五;
图10是本申请实施例可应用的一种无线通信***的框图之五;
图11是本申请实施例提供的中继链路释放装置的结构示意图之一;
图12是本申请实施例提供的中继链路释放装置的结构示意图之二;
图13是本申请实施例提供的中继链路释放装置的结构示意图之三;
图14是本申请实施例提供的通信设备的结构示意图;
图15是本申请实施例提供的终端的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象,而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换,以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施,且“第一”、“第二”所区别的对象通常为一类,并不限定对象的个数,例如第一对 象可以是一个,也可以是多个。此外,说明书以及权利要求中“和/或”表示所连接对象的至少其中之一,字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是,本申请实施例所描述的技术不限于长期演进型(Long Term Evolution,LTE)/LTE的演进(LTE-Advanced,LTE-A)***,还可用于其他无线通信***,诸如码分多址(Code Division Multiple Access,CDMA)、时分多址(Time Division Multiple Access,TDMA)、频分多址(Frequency Division Multiple Access,FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access,SC-FDMA)和其他***。本申请实施例中的术语“***”和“网络”常被可互换地使用,所描述的技术既可用于以上提及的***和无线电技术,也可用于其他***和无线电技术。以下描述出于示例目的描述了新空口(New Radio,NR)***,并且在以下大部分描述中使用NR术语,但是这些技术也可应用于NR***应用以外的应用,如第6代(6th Generation,6G)通信***。
图1示出本申请实施例可应用的一种无线通信***的框图。无线通信***包括终端11和网络侧设备12。其中,终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant,PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer,UMPC)、移动上网装置(Mobile Internet Device,MID)、增强现实(augmented reality,AR)/虚拟现实(virtual reality,VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(VUE)、行人终端(PUE)、智能家居(具有无线通信功能的家居设备,如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer,PC)、柜员机或者自助机等终端侧设备,可穿戴式设备包括:智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是,在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备,其中,接入网设备12也可以称为无线接入网设备、无线接入网(Radio Access Network,RAN)、无线接入网功能或无线接入网单元。接入网设备12可以包括基站、WLAN接入点或WiFi节点等,基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station,BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set,BSS)、扩展服务集(Extended Service Set,ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point,TRP)或所述领域中其他某个合适的术语,只要达到相同的技术效果,所述基站不限于特定技术词汇,需要说明的是,在本申请实施例中仅以NR***中的基站为例进行介绍,并不限定基站的具体类型。
下面结合附图,通过一些实施例及其应用场景对本申请实施例提供的中继链路释放方法、装置、UE及通信***进行详细地说明。
R18近距离通信课题中引入了U2U中继通信场景,对于该通信场景,可能存在共享PC5 link的需求,也可以称为共享中继UE,通过共享PC5 link可以有效避免以下至少一项:
场景A、同一个源端UE通过中继UE分别建立多条源端UE与中继UE的PC5链接。
例如,如图2所示,通过共享源端UE与中继UE之间的PC5中继链接,可以实现源端UE与3个目标UE之间的U2U中继链接。
场景B、同一个目标UE与中继UE建立多条PC5 link来实现与多个源端UE的U2U中继通链接。
例如,如图3所示,通过共享目标UE与中继UE之间的PC5链接,可以实现3 源端UE与目标UE之间的U2U中继链接。
然而,上述共享PC5连接的方式:存在特定之间的U2U relay连接的释放,会导致其他U2U relay连接被释放的潜在风险。
如上述场景A,若源端UE只想和目标UE#1释放端到端U2U中继链接,如按照R17版本以及之前对PC5 link release的处理,中继UE收到源端UE的PC5 link release后,则会执行源端UE与中继UE之间的PC5 link释放过程。导致源端UE与目标UE#2和#3的U2U中继通信中断。即便在PC5 link release中携带了目标UE的标识,但是目前对于PC5 link release还没有规定保留PC5 link的处理,因此需要标准化说明,来正确实现共享U2U中继通信中特定端到端U2U中继链接的释放。此问题同理适用于上述场景B。
因此如何在共享U2U中继的通信场景中正确实现的特定端到端连接释放,是亟待解决的问题。
而在本申请实施例提供的中继链路释放方法中,在满足第一条件的情况下,第一用户设备UE向中继UE发送第一请求消息,第一请求消息用于请求释放与第二UE相关的U2U中继链接;其中,第一条件包括以下至少之一:第一UE为通过中继UE与第二UE连接的至少两个第三UE中的UE;第二UE为通过中继UE与第一UE连接的至少两个第四UE中的UE。可以理解,第一条件用于表征共享U2U中继的通信场景。如此,在多个UE(如至少两个源UE或至少两个目标UE)共用相同中继UE的场景中,即在共享中继UE的U2U通信场景中,当该多个UE中的UE需要释放其与特定UE之间U2U中继链接时,由于该UE可以向中继UE发送包括指示特定UE的第一信息的释放请求消息,因此可以确保中继UE可以准确地对与特定UE相关的U2U链路进行释放。
需要说明的是,在第一请求消息中可以包括用于指示第二UE的第一信息,进而能够显示指示需要释放的与第二UE相关的U2U中继链接。
本申请实施例提供了一种中继链路释放方法,图4示出了本申请实施例提供的中继链路释放方法的流程示意图,如图4所示,本申请实施例提供的中继链路释放方法可以包括下述的步骤401至步骤404。
步骤401、第一UE判断是否满足第一条件。
其中,第一条件可以包括以下(1)和(2)中至少之一:
第一UE为通过中继UE与第二UE连接的至少两个第三UE中的UE;
第二UE为通过中继UE与第一UE连接的至少两个第四UE中的UE。
本申请实施例中,满足第一条件可以理解为:第一UE所处的U2U中继通信***满足第一条件。具体的,若第一UE所处的U2U中继通信***满足第一条件,则表示,该通信***为共享中继UE的通信***,第一UE继续执行步骤402。若第一UE所处的U2U中继通信***满足第一条件,则表示该通信***为非共享中继UE的通信***,第一UE直接发送请求释放U2U中继链接的第三请求消息即可,对于第三请求消息的描述,参见相关技术的相关描述。
可选地,第三UE和第四UE分别为源UE和目标UE;或者,第三UE和第四UE分别为目标UE和源UE。
也就是说,在本申请实施例提供的中继链路释放方法中,第一UE可以为源UE、第二UE可以为目标UE;或者,第一UE可以为目标UE、第二UE可以为源UE。具体根据实际使用需求确定,本申请实施例不作限定。
换句话说,在本申请实施例提供的中继链路释放方法中可以由源UE或目标UE发起中继链路释放过程。
步骤402、第一UE向中继UE发送第一请求消息。
步骤403、中继UE接收第一请求消息。
可选地,方式1,若第一请求消息包括用于指示第二UE的第一信息,第一请求消息可以用于请求释放与第二UE相关的U2U中继链接。
方式2,若第一请求消息中不包括指示任一第三UE的信息,则表示第一请求消息用于请求释放与至少一个第三UE之间的U2U中继链接。
为了便于理解本申请实施例提供的中继链路释放方法,除特别说明外,下述实施例中均以第一请求消息中包括第一信息为例进行示意。
可以理解,对于中继UE来说,第一请求消息是第一UE在满足第一条件的情况下发送的。对于第一条件的描述参见上述步骤401中的相关描述。
可选地,所述第一信息可以包括以下至少之一:第二UE的标识;第二UE的互联网协议(Internet Protocol,IP)地址;第二UE的层(Layer,L)2标识;第二UE的多址接入信道(Multiple Access Channel,MAC)地址。如此,由于第一请求消息中可以包括:第二UE的标识、IP地址、MAC地址和层2地址中的至少一项,因此当中继UE接收到第一请求消息之后,可以根据第一信息,准确地对与第二UE相关的U2U中继链路进行释放。
可选地,所述第一请求消息可以为以下之一:
PC5单播链接释放请求消息;
PC5单播链接修改(modification)请求消息;
用于释放特定U2U中继链接的专用请求消息。
可选地,在第一请求消息为PC5单播链接释放请求消息的情况下,方式1中的第一请求消息与相关技术中PC5单播链接释放请求消息的差异在于,第一请求消息中包括第一信息。方式2中的第一请求消息与相关技术中PC5单播链接释放请求消息相同。
可选地,在第一请求消息为PC5单播链路修改请求消息的情况下,第一请求消息中还包括第一移除操作指示信息。第一请求消息包括第一信息和移除操作指示信息。
其中,第一移除操作指示信息用于U2U中继链接的释放。
对于“PC5单播链接释放请求消息”和“PC5单播链接修改请求消息”的其他描述,参见相关技术。
可选地,上述“与第二UE相关的U2U中继链接”,可以包括以下任一项:中继UE与第二UE之间的第一PC5单播链接;第一PC5单播链接中与第一UE相关的PC5上下文。
步骤404、中继UE响应于第一请求消息,执行对与第二UE相关的U2U中继链接的释放相关操作。
对于“与第二UE相关的U2U中继链接”的描述,参见上述实施例中对“与第二UE相关的U2U中继链接”的相关描述。
本申请实施例中,中继UE接收到第一请求消息之后,可以响应于第一请求消息,判断中继UE与第二UE之间的第一PC5单播链接是否为共享单播链接,并执行与第一PC5单播链接的判断结果对应的操作(参见下述的步骤404b和步骤404c)。
需要说明的是,步骤404是以第一请求消息中包括第一信息为例进行示意的,实际实现中,若第一请求消息中不包括第一信息,则中继UE可以直接发起释放第一UE与至少一个第四UE之间的U2U中继链接,具体释放方式参见相关技术。
可选地,在第一请求消息为PC5单播链接修改请求消息,且第一请求消息还包括第一移除操作指示信息的情况下,上述步骤404具体可以通过下述的步骤404a实现。
步骤404a、中继UE响应于第一请求消息,根据第一移除操作指示信息和第一信息,执行对与第二UE相关的U2U中继链接的释放相关操作。
其中,第一移除操作指示信息用于U2U中继链接的释放。
可以理解,中继UE可以根据第一信息确定出“与第二UE相关的U2U中继链接”;并根据第一移除操作指示信息,确定出:“移除”或“释放”这一操作,即释放相关操作。从而实现对:与第二UE相关的U2U中继链接的释放相关操作。
可选地,在第一请求消息中包括第一信息的情况下,上述步骤404具体可以通过下述的步骤404b或步骤404c实现。
步骤404b、中继UE响应于第一请求消息,在第一PC5单播链接为非共享单播链接的情况下,中继UE发起第一PC5单播链接的释放过程。
其中,第一PC5单播链接为中继UE与第二UE之间的PC5单播链接。
步骤404c、中继UE响应于第一请求消息,在第一PC5单播链接为共享单播链接的情况下,向第二UE发送第二请求消息。
其中,第二请求消息可以用于请求释放与第二UE相关的U2U中继链接,且第二请求消息包括用于指示第一UE的第二信息,第一UE与第二UE通过中继UE连接。
可以理解,中继UE向第二UE发送第二请求消息之后,第二UE可以接收第二请求消息,并响应于第二请求消息,执行与第二UE相关的U2U中继链接的释放相关操作。
可选地,第二信息可以包括以下至少之一:第一UE的标识;第一UE的IP地址;第一UE的层2标识;第一UE的MAC地址。
如此,当第二UE接收到第二请求消息之后,可以根据第二信息从至少一个第三UE中确定出第一UE。
可选地,第二请求消息可以为以下之一:PC5单播链接释放请求消息;PC5单播链接修改请求消息;用于释放特定U2U中继链接的专用请求消息。
对于第二请求消息的其他描述,参见上述实施例中对第一请求消息的相关描述。
可选地,在第二请求消息为PC5单播链接修改请求消息的情况下,第二请求消息中还可以包括第二移除操作指示信息;其中,第二移除操作指示信息用于U2U中继链接的释放。
在本申请实施例提供的中继链路释放方法中,在多个UE(如至少两个源UE或至少两个目标UE)共用相同中继UE的场景中,即在共享中继UE的U2U通信场景中,当该多个UE中的UE需要释放其与特定UE之间U2U中继链接时,由于该UE可以向中继UE发送包括指示特定UE的第一信息的释放请求消息,因此可以确保中继UE可以准确地对与特定UE相关的U2U链路进行释放。。
可选地,在上述步骤404之后,本申请实施例提供的中继链路释放方法还可以包括下述的步骤405。
步骤405、第一UE保持与第五UE之间的U2U中继链接。
其中,第五UE包括至少两个第四UE中除第二UE之外的UE。
如此,可以确保在释放与第二UE相关的U2U中继链接之后,第一UE仍然能够通过中继UE与至少两个第四UE中除第二UE之外的UE进行通信。
可选地,结合上述图4,如图5所示,在上述步骤404之后,本申请实施例提供的中继链路释放方法还可以包括下述的步骤406和步骤407。
步骤406、中继UE向第一UE发送第一回复消息。
步骤407、第一UE接收第一回复消息。
其中,第一回复消息用于指示与第二UE相关的U2U中继链接的释放结果。
需要说明的是,步骤405可以在步骤406之前执行,步骤407之前执行或在步骤407之后执行。
可选地,若第一请求消息是PC5单播链接释放请求消息,则第一回复消息为PC5连接释放接受消息。
若第一请求消息是PC5单播链接修改请求消息,则第一回复消息为PC5单播链接修改接受(accept)消息。
若第一请求消息是用于释放特定U2U中继链接的专用请求消息,即一个专用的PC5-S信息,那则第一回复消息为对应的PC5-S接受消息。
如此,由于中继UE可以在执行与第二UE先关的U2U中继链接的释放相关操作之后,可以向第一UE发送第一回复消息,因此可以使得第一UE可以根据第一回复消息获知与U2U中继链接的释放相关操作的释放结果。
可选地,在上述步骤404a之后,本申请实施例提供的中继链路释放方法还可以包括下述的步骤408和步骤409中的至少一项。
步骤408、中继UE保持与第六UE之间的PC5单播链接。
步骤409、中继UE删第二UE的PC5上下文。
其中,第六UE包括:至少两个第三UE;至少两个第四UE中除第二UE之外的UE。
如此,一方面,由于中继UE保持与至少两个第三UE、至少两个第四UE中除第二UE之外的UE之间的PC5单播链接,因此可以确保至少两个第三UE与至少两个第四UE中除第二UE之外的UE,继续通过中继UE进行通信。另一方面,由于中继UE可以在释放第一PC5单播链接之后,删第二UE的PC5上下文,因此可以降低中继UE的内存占用,提高中继UE的空间利用率。
可选地,结合上述图4,如图6所示,在上述步骤404b(即中继UE向第二UE发送第二请求消息)之后,本申请实施例提供的中继链路释放方法还可以包括下述的步骤410和步骤411。
步骤410、第二UE接收中继UE发送的第二请求消息。
其中,第二请求消息用于请求释放与第二UE相关的中继链接,第二请求消息包括用于指示所述第一UE的第二信息。
步骤411、第二UE响应于第二请求消息,释放与第二UE相关的中继链接。
其中,第二请求消息是中继UE在第一PC5单播链接为共享单播链接的情况下发送的,第一单播链接为中继UE与第二UE之间的PC5单播链接。
对于步骤410和步骤411的其他描述,参见上述实施例中的相关描述。
可选地,“第二UE释放与第二UE相关的中继链接”包括:
在第二请求消息中包括第二信息情况下,第二UE删除第一PC5单播链接中与第一UE相关的PC5上下文。
在第二请求消息中不包括指示UE的信息(如第二信息)的情况下,第二UE发起第一PC5单播链接的释放过程。
可以理解,在第二UE删除第一PC5单播链接中与第一UE相关的PC5上下文之后,第一UE与第二UE之间无法再通过中继UE进行通信。具体而言,由于与第一UE相关的PC5上下文中包括:第二UE向第一UE发送数据所使用的数据发送承载、以及指示第一UE的信息,因此在将第一PC5单播链接中与第一UE相关的PC5上下文删除之后,第二UE无法再继续与第一UE进行通信。
可选地,在第二请求消息为PC5单播链接修改请求消息,且第二请求消息还包括第二移除操作指示信息,第二移除操作指示信息用于U2U中继链接的释放的情况下,第二UE释放与第二UE相关的中继链接,可以包括:第二UE根据第二信息和第二移除操作指示信息,释放与第二UE相关的中继链接。
可以理解,中继UE可以根据第二信息确定出“与第二UE相关的U2U中继链接”,如确定出需要移除第二UE与第一UE之间的U2U中继链接;并根据第一移除操作指示信息,确定出:“移除”或“释放”这一操作,即释放相关操作。
如此,由于可以通过PC5单播链接修改请求消息中添加的第二信息和第二移除操作指示信息,对与第二UE相关的U2U中继链接进行准确地释放,因此可以提高释放中继链路的灵活性。
如此,在第一UE需求释放与第二UE相关的U2U中继链接的情况下,且中继UE与第二UE之间的PC5单播链接为共享单播链接时,由于可以由第二UE执行与第二UE相关的U2U中继链接的释放操作,因此可以确保第二UE能够在释放与第二UE相关的U2U中继链接之后,仍然能够通过中继UE与至少两个第三UE中除第一UE外的UE进行通信。
可选地,在第二请求消息为PC5单播链接释放请求消息或PC5单播链接修改请求消息的情况下,在上述步骤410之后,本申请实施例提供的中继链路释放方法还可以包括下述的步骤412。
步骤412、第二UE保持与中继UE之间的第一PC5单播链接。
如此,在第二UE释放与第二UE相关的中继链接的情况下,由于第二UE能够保持与中继UE之间的第一PC5单播链接,因此可以确保第二UE能中继UE与至少两个第三UE中除第一UE外的UE进行通信,提高U2U中继通信***的稳定性。
需要说明的是,本申请实施例不限定步骤411与步骤412之间的执行顺序。
可选地,在上述步骤411之后,本申请实施例提供的中继链路释放方法还可以包括下述的步骤413和步骤414。
步骤413、第二UE向中继UE发送第二回复消息。
步骤414、中继UE接收第二回复消息。
其中,第二回复消息用于指示与第二UE相关的中继链接的释放结果。
可选地,若第二请求消息是PC5单播链接释放请求消息,则第二回复消息为PC5连接释放接受消息;若第二请求消息是PC5单播链接修改请求消息,则第二回复消息为PC5单播链接修改接受(accept)消息;若第二请求消息是用于释放特定U2U中继链接的专用请求消息,即一个专用的PC5-S信息,则第二回复消息为对应的PC5-S接受消息。
可选地,在本申请实施例提供的中继链路释放方法中包括上述406的情况下,步骤406具体在上述步骤414之后执行;且上述步骤406具体可以通过下述的步骤406a实现。
步骤406a、中继UE根据第二回复消息,向第一UE发送第一回复消息。
可选地,中继UE可以根据第二回复消息所指示的释放结果,向第一UE发送第一回复消息。如,若第二回复消息指示成功释放与第二UE相关的中继链接,则第一回复消息也指示成功释放与第二UE相关的中继链接;若第二回复消息指示与第二UE相关的中继链接释放失败,则第一回复消息也指示与第二UE相关的中继链接释放失败。
如此,由于第二UE可以向中继UE发送指示与第二UE相关的中继链接的释放结果的第二回复消息,从而中继UE可以接收到第二回复消息。如此,一方面可以使得中继UE知晓与第二UE相关的中继链接的释放结果;另一方面,可以使得中继UE能够基于第二回复消息,向第一UE发送第一回复消息,以便于第一UE知晓与第二UE相关的中继链接的释放结果。如此可以提高通信效率。
下面分别以第一PC5单播链接为非共享单播链接(场景一)和共享单播链接(场景二)为例,对本申请实施例提供的中继链路释放方法进行示例性地描述。
场景一:在第一PC5单播链接为非共享单播链接的情况下,如图7所示,本申请实施例提供的中继链路释放方法可以包括下述的步骤701至步骤703。
步骤701、在满足第一条件的情况下,第一UE向中继UE发送第一请求消息。
步骤702、中继UE接收第一请求消息。
步骤703、中继UE响应于第一请求消息,发起第一PC5单播链接的释放过程。
其中,第一请求消息中可以包括第一信息。
可选地,在步骤701之后,本申请实施例提供的中继链路释放方法还可以包括下述的步骤704。
步骤704、第一UE保持与第五UE之间的U2U中继链接。
其中,第五UE包括至少两个第四UE中除第二UE之外的UE。
可选地,在步骤703之后,本申请实施例提供的中继链路释放方法还可以包括下述的步骤705和步骤706。
步骤705、中继UE向第一UE发送第一回复消息。
步骤706、第一中继UE接收第一回复消息。
对于步骤701至步骤706详细描述,参见上述实施例中的相关描述,为了避免重复,不再赘述。
下面结合具体示例对场景1进行示例性地说明。
示例性地,假设第一条件包括:第二UE为通过中继UE与第一UE连接的至少两个第四UE中的UE。结合上述图2,如图8所示,假设第一UE为源UE,至少两个第四UE包括:目标UE#1,#2,#3;第一信息指示目标UE#1。可以看出源UE与中继UE之间的PC5单播链接被目标UE#1,#2,#3共享。参照图8,本示例提供的中继链接释放方法可以包括:
步骤81、源UE向中继UE第一请求消息。
可以理解,在源UE发送第一请求消息之后,中继UE可以接收第一请求消息。
其中,第一请求消息可以是以下至少一项消息:PC5 link release请求消息(即PC5单播链接释放请求消息)、PC5 link modification请求消息(PC5单播链接修改请求消息)、专用释放端到端的U2U中继链接释放消息(即用于释放特定U2U中继链接的专用请求消息,也即定义一条新的PC5-S消息)。
可选地,在第一请求消息为PC5 link release请求消息或者专用释放端到端的U2U relay连接释放消息时:
若第一请求消息中包含第一信息,则第一请求消息用于请求消息中继UE释放源UE与特定目标UE(如目标UE#1)的端到端U2U中继链接。
其中,第一信息可以包括以下至少一项:目标UE#1的标识、目标UE#1的IP地址、目标UE#1的mac地址、目标UE#1的层2标识。
若第一请求消息不包含第一信息,则第一请求消息用于请求消息中继UE释放源UE与所有目标UE(即目标UE#1,#2和#3)的U2U中继链接。
可选地,在第一请求消息PC5 link modification请求时,第一请求消息中除了第一信息,还包括第一移除操作指示信息,第一移除操作指示信息用于U2U中继链接的释放。
步骤82、中继UE响应于第一请求消息,发起与至少一个目标UE之间的PC5单播链接释放过程。
可选地,在第一请求消息为PC5单播链接释放请求消息或者用于释放特定U2U中继链接的专用请求消息时:
若第一请求消息中不包括第一信息,则中继UE发起与所有目标UE的PC5单播链接释放过程。
若第一信息中包括第一信息,则中继UE发起与目标UE#1之间的PC5单播链接释放过程(如上图的目标UE#1)。进一步可选地,可选地,中继发起与特定目标UE之间的PC5单播链接释放过程之后,中继UE还可以保持与源UE的PC5单播链接; 和/或,删除源UE对应的目标UE#1的PC5 context。
可选地,当第一请求消息为PC5单播链接修改请求消息,也称为:PC5 link modification请求消息时:中继UE根据第一信息和第一移除操作指示信息,中继UE具体可以发起与特定目标UE的PC5单播链接释放过程(如上图的目标UE#1)。进一步可选地,中继UE发起与特定目标UE的PC5单播链接释放过程之后,中继UE还可以删除源UE对应的目标UE(如目标UE#1)的PC5 context。
可选地,在步骤82之后,本示例提供的中继链接释放方法还可以包括下述的步骤83。
步骤83、中继UE向源UE发送第一回复消息。
可以理解,中继UE向源UE发送第一回复消息之后,源UE可以接收第一回复消息。
其中,第一回复消息用于指示中继UE释放源UE与所有目标UE或特定目标UE之间的U2U中继链接的释放结果。
需要说明的是,图8中的一个双向箭头用于表示:一个UE(源UE或目标UE)与中继UE之间的PC5单播链接。
例如:从图8可以看出,中继UE发起与目标UE#1之间的PC5单播链接的释放过程之前,中继UE与目标UE#1之间具有双向箭头;而在中继UE发起与目标UE#1之间的PC5单播链接的释放过程之后,中继UE与目标UE#1之间无双向箭头。
可以看出,在场景1中,对于共享U2U relay连接场景,源UE需要释放特定端到端的U2U relay连接时:源UE指示中继UE对特定目标UE的端到端的U2U relay连接释放,中继UE根据指示释放与特定目标UE的PC5 link连接,保留所述中继UE与源端UE的PC5 link连接。
场景二:在第一PC5单播链接为共享单播链接的情况下,如图9所示,本申请实施例提供的中继链路释放方法可以包括下述的步骤91至步骤步骤95。
步骤91、在满足第一条件的情况下,第一UE向中继UE发送第一请求消息。
步骤92、中继UE接收第一请求消息。
步骤93、中继UE响应于第一请求消息,向第二UE发送第二请求消息。
步骤94、第二UE接收第二请求消息。
步骤95、第二UE响应于第二请求消息,删除第二UE删除第一单播链接中与第一UE相关的PC5上下文。换句话说,第二UE可以删除第二UE对应的第一UE的PC5 context。
可选地,在步骤95之后,本申请实施例提供的中继链路释放方法还可以包括下述的步骤96和步骤97。
步骤96、第二UE向第一UE发送第二回复消息。
步骤97、中继UE接收第二回复消息。
可选地,在步骤97之后,本申请实施例提供的中继链路释放方法还可以包括下述的步骤98和步骤99。
步骤98、中继UE根据第二回复消息,向第一UE发送第一回复消息。
步骤99、第一UE接收第一回复消息。
对于步骤91至步骤99的详细描述,参见上述实施例中的相关描述,为了避免重复,不再赘述。
对于本申请实施例中的其他描述,参见上述实施例中的相关描述。
下面结合具体示例对场景2进行示例性地说明。
示例性地,假设第一条件包括:第二UE为通过中继UE与第一UE连接的至少两个第四UE中的UE。结合上述图2,如图10所示,假设至少两个第三UE包括:源 UE#1,#2,#3;第一信息指示目标UE#1。可以看出目标UE与中继UE之间的PC5单播链接被源UE#1,#2,#3共享。那么,参照图10,当源端UE#1不再需要和目标UE执行U2U中继通信时,本示例提供的中继链接释放方法可以包括:
步骤101、源UE向中继UE发送第一请求消息。
可以理解,源UE#3向中继UE发送第一请求消息之后,中继UE可以接收第一请求消息。
步骤102、中继UE响应于PC5单播链接释放请求消息,向目标UE发送第二请求消息。
可以理解,中继UE向目标UE发送第二请求消息之后,目标UE可以接收第二请求消息。
其中,第二请求消息可以是以下至少一项消息:PC5 link release请求消息、PC5 link modification请求消息、专用释放端到端的U2U relay连接释放消息(定义一条新的PC5-S消息)。
可选地,在第二请求消息为PC5 link release请求消息或者专用释放端到端的U2U relay连接释放消息时:
若第二请求消息中包含第二信息,则第二请求消息用于请求目标UE释放目标UE与特定源端UE的端到端U2U中继链接。若第二请求消息不包含上述第二信息,则第二请求消息用于请求目标UE释放目标UE与所有源端UE的端到端U2U中继链接。
其中,第二信息可以包括以下至少一项:
源UE标识(即上述源端UE#3的标识);
源端UE的IP地址或者mac地址(如上述源端UE#3的IP地址或者mac地址);
源端UE的L2标识(如上述源端UE#3的层2标识)。
可选地,在第二请求消息为PC5 link modification请求消息的情况下,该PC5 link modification请求消息中除了第二信息,还包括“移除”操作指示(即第二移除操作指示信息),第二移除操作指示信息用于指示目标UE释放目标UE与特定源UE的端到端U2U中继链接。
步骤103、目标UE响应于第二请求消息,发起与至少一个源UE之间的PC5单播链接释放过程。
具体的,在第二请求为PC5 link释放请求或者专用释放端到端的U2U relay连接释放消息时:
若第二请求消息中不包含第二信息,则目标UE执行与中继UE的PC5单播链接释放过程,即释放目标UE与所有源UE的端到端中继通信链接。
若第二请求消息中包含第二信息,则目标UE执行:保留与所述中继UE的PC5单播链接,删除所述目标UE对应的源端UE的PC5 context的操作。
可选地,在第二请求消息为PC5 link modification请求时,目标UE根据第二信息和第二移除操作指示信息,删除目标UE对应的源端UE(即源端UE#1)的PC5 context。
步骤104、目标UE向中继UE发送第二回复消息。
可以理解,目标UE向中继UE发送第二回复消息之后,中继UE可以接收第二回复消息。
步骤105、中继向源UE#3发送第一回复消息。
可以理解,中继UE向第一UE发送第一回复消息之后,源UE#2可以接收第一回复消息。
对于场景2中的其他描述,可以引用和参见上述实施例中的相关描述,为了避免重复,此处不再赘述。
可以看出,在场景2中,对于共享U2U relay连接场景,源UE需要释放特定端到 端的U2U relay连接时:源UE指示中继UE对特定目标UE的端到端的U2U relay连接释放;中继UE可以根据第一请求消息,指示目标UE对特定源端UE的端到端的U2U relay连接释放,目标UE根据指示删除所述与源端UE的PC5 link context,保留与所述中继UE的PC5 link连接。
本申请实施例提供的中继链路释放方法,执行主体可以为中继链路释放装置。本申请实施例中以中继链路释放装置执行中继链路释放方法为例,说明本申请实施例提供的中继链路释放装置。
本申请实施例提供了一种中继链路释放装置,图11示出了本申请实施例提供的中继链路释放装置的结构示意图,如图11所示,本申请实施例提供的中继链路释放装置110可以包括:发送模块111。
发送模块111,用于在满足第一条件的情况下,向中继UE发送第一请求消息,第一请求消息用于请求释放与第二UE相关的U2U中继链接;
其中,第一条件包括以下至少之一:
第一UE为通过中继UE与第二UE连接的至少两个第三UE中的UE;
第二UE为通过中继UE与第一UE连接的至少两个第四UE中的UE。
一种可能的实现方式中,在所述第一请求消息包括用于指示所述第二UE的第一信息的情况下,第一信息包括以下至少之一:第二UE的标识;第二UE的互联网协议IP地址;第二UE的层2标识;第二UE的MAC地址。
一种可能的实现方式中,第一请求消息为以下之一:PC5单播链接释放请求消息;PC5单播链接修改请求消息;用于释放特定U2U中继链接的专用请求消息。
一种可能的实现方式中,在第一请求消息为PC5单播链路修改请求消息的情况下,第一请求消息中还包括第一移除操作指示信息;其中,第一移除操作指示信息用于U2U中继链接的释放。
一种可能的实现方式中,中继链路释放装置110还包括:第一接收模块;
第一接收模块,用于在发送模块111向中继UE发送第一请求消息之后,接收中继UE发送的第一回复消息,第一回复消息用于指示与第二UE相关的U2U中继链接的释放结果。
一种可能的实现方式中,中继链路释放装置110还包括:处理模块;处理模块,用于在发送模块111向中继UE发送第一请求消息之后,保持与第五UE之间的U2U中继链接;其中,第五UE包括至少两个第四UE中除第二UE之外的UE。
一种可能的实现方式中,上述与第二UE相关的U2U中继链接,包括以下任一项:中继UE与第二UE之间的第一PC5单播链接;第一PC5单播链接中与第一UE相关的PC5上下文。
在本申请实施例提高的中继链路释放装置中,在多个UE(如至少两个源UE或至少两个目标UE)共用相同中继UE的场景中,即在共享中继UE的U2U通信场景中,当该多个UE中的中继链路释放装置需要释放其与特定UE之间U2U中继链接时,由于该中继链路释放装置可以向中继UE发送包括指示特定UE的第一信息的释放请求消息,因此可以确保中继UE可以准确地对与特定UE相关的U2U链路进行释放。
本申请实施例提供了一种中继链路释放装置,图12示出了本申请实施例提供的中继链路释放装置的结构示意图,如图12示,本申请实施例提供的中继链路释放装置120可以包括:接收模块121和处理模块122。
接收模块121,用于接收第一UE发送的第一请求消息,第一请求消息用于释放与第二UE相关的U2U中继链接;
处理模块122,用于响应于接收模块121接收的第一请求消息,执行对与第二UE相关的U2U中继链接的释放相关操作;
其中,第一请求消息是第一UE在满足第一条件的情况下发送的,第一条件包括以下至少之一:
第一UE为通过中继UE与第二UE连接的至少两个第三UE中的UE;
第二UE为通过中继UE与第一UE连接的至少两个第四UE中的UE。
一种可能的实现方式中,处理模块122,具体用于:
在第一PC5单播链接为非共享单播链接的情况下,发起第一PC5单播链接的释放过程;
在第一PC5单播链接为共享单播链接的情况下,向第二UE发送第二请求消息;
其中,第一PC5单播链接为中继UE与第二UE之间的PC5单播链接;
其中,第二请求消息用于请求释放与第二UE相关的U2U中继链接,第二请求消息包括用于指示第一UE的第二信息。
一种可能的实现方式中,在所述第一请求消息包括用于指示所述第二UE的第一信息,第一信息包括以下至少之一:第二UE的标识;第二UE的IP地址;第二UE的层2标识;第二UE的MAC地址。
一种可能的实现方式中,处理模块122,还用于在发起第一PC5单播链接的释放过程之后,保持与第六UE之间的PC5单播链接;和/或,删除第二UE的PC5上下文;其中,第六UE包括:至少两个第三UE;至少两个第四UE中除第二UE之外的UE。
一种可能的实现方式中,第一请消息求消息为以下之一:PC5单播链接释放请求消息;PC5单播链接修改请求消息;用于释放特定U2U中继链接的专用请求消息。
一种可能的实现方式中,第一请求消息为PC5单播链接修改请求消息,且第一请求消息还包括第一移除操作指示信息;
处理模块122,具体用于根据第一移除操作指示信息和第一信息,执行对与第二UE相关的U2U中继链接的释放相关操作。
一种可能的实现方式中,第二信息包括以下至少之一:第一UE的标识;第一UE的IP地址;第一UE的层2标识;第一UE的MAC地址。
一种可能的实现方式中,第二请求消息为以下之一:PC5单播链接释放请求消息;PC5单播链接修改请求消息;用于释放特定U2U中继链接的专用请求消息。
一种可能的实现方式中,第二请求消息为PC5单播链接修改请求消息,且第二请求消息中还包括第二移除操作指示信息;其中,第二移除操作指示信息用于U2U中继链接的释放。
一种可能的实现方式中,中继链路释放装置120还包括:发送模块;
发送模块,用于在处理模块122执行对与第二UE相关的U2U中继链接的释放相关操作之后,向第一UE发送第一回复消息,第一回复消息用于指示与第二UE相关的U2U中继链接的释放结果。
一种可能的实现方式中,接收模块121,还用于在发送模块向第一UE发送第一回复消息之前,接收第二UE发送的第二回复消息,第二回复用于指示与第二UE相关的U2U中继链接的释放结果;
发送模块,具体用于根据第二回复消息,向第一UE发送第一回复消息。
在本申请实施例提供的中继链路释放装置中,在接收到请求第一UE发送的释放与第二UE相关的中继链路的第一请求消息时,由于可以根据该根据该请求消息仅对该与特定UE相关的中继链路进行释放,因此可以确保第一UE和/或第二UE能够继续通过中继UE其他UE进行通信,如此可以提高通信***的稳定性能。
本申请实施例提供了一种中继链路释放装置,图13示出了本申请实施例提供的中继链路释放装置的结构示意图,如图13所示,本申请实施例提供的中继链路释放装置130可以包括:接收模块131和处理模块132。
接收模块131,用于接收中继UE发送的第二请求消息,第二请求消息用于请求释放与第二UE相关的中继链接,第二请求消息包括用于指示第一UE的第二信息,第一UE与第二UE通过中继UE连接;
处理模块132,用于响应于接收模块131接收的第二请求消息,释放与第二UE相关的中继链接;
其中,第二请求消息是中继UE在第一PC5单播链接为共享单播链接的情况下发送的,第一单播链接为中继UE与第二UE之间的PC5单播链接。
一种可能的实现方式中,处理模块132,具体用于删除第一PC5单播链接中与第一UE相关的PC5上下文。
一种可能的实现方式中,第二信息包括以下至少之一:第一UE的标识;第一UE的IP地址;第一UE的层2标识;第一UE的MAC地址。
一种可能的实现方式中,第二请求消息为以下之一:PC5单播链接释放请求消息;PC5单播链接修改请求消息;用于释放特定U2U中继链接的专用请求消息。
一种可能的实现方式中,第二请求消息为PC5单播链接释放请求消息或PC5单播链接修改请求消息;
处理模块132,还用于在接收模块131接收中继UE发送的第二请求消息之后,保持第一PC5单播链接。
一种可能的实现方式中,第二请求消息为PC5单播链接修改请求消息,且第二请求消息还包括第二移除操作指示信息,第二移除操作指示信息用于U2U中继链接的释放;
处理模块132,具体用于根据第二信息和第二移除操作指示信息,释放与第二UE相关的中继链接。
一种可能的实现方式中,中继链路释放装置130还包括:发送模块。发送模块,用于在处理模块132释放与第二UE相关的中继链接之后,向中继UE发送第二回复消息,第二回复消息用于指示与第二UE相关的中继链接的释放结果。
在本申请实施例提供的中继链路释放装置中,在第一UE需求释放与中继链路释放装置相关的U2U中继链接的情况下,且中继UE与中继链路释放装置之间的PC5单播链接为共享单播链接时,由于可以由中继链路释放装置执行与中继链路释放装置相关的U2U中继链接的释放操作,因此可以确保中继链路释放装置能够在释放与中继链路释放装置相关的U2U中继链接之后,仍然能够通过中继UE与至少两个第三UE中除第一UE外的UE进行通信。
本申请实施例中的中继链路释放装置可以是电子设备,例如具有操作***的电子设备,也可以是电子设备中的部件,例如集成电路或芯片。该电子设备可以是终端,也可以为除终端之外的其他设备。示例性的,终端可以包括但不限于上述所列举的终端11的类型,其他设备可以为服务器、网络附属存储器(Network Attached Storage,NAS)等,本申请实施例不作具体限定。
本申请实施例提供的中继链路释放装置能够实现图4至图10的方法实施例实现的各个过程,并达到相同的技术效果,为避免重复,这里不再赘述。
可选的,如图14所示,本申请实施例还提供一种通信设备1400,包括处理器1401和存储器1402,存储器1402上存储有可在处理器1401上运行的程序或指令,例如,该通信设备1400为终端时,该程序或指令被处理器1401执行时实现上述中继链路释放方法实施例的各个步骤,且能达到相同的技术效果。该通信设备1400为第一UE侧方法对应的通信设备时,该程序或指令被处理器1401执行时实现上述中继链路释放方法实施例中第一UE执行的各个步骤,且能达到相同的技术效果,为避免重复,这里不再赘述。该通信设备1400为中继UE侧方法对应的通信设备时,该程序或指令被处 理器1401执行时实现上述中继链路释放方法实施例中中继UE执行的各个步骤,且能达到相同的技术效果,为避免重复,这里不再赘述。该通信设备1400为第二UE侧方法对应的通信设备时,该程序或指令被处理器1401执行时实现上述中继链路释放方法实施例中第二UE执行的各个步骤,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供一种通信设备,包括处理器及通信接口。
其中,处理器用于判断是否满足第一条件,通信接口用于在满足第一条件的情况下,向中继UE发送第一请求消息,第一请求消息用于请求释放与第二UE相关的U2U中继链接。该终端实施例与上述第一UE侧方法实施例对应,上述中继UE侧方法实施例的各个实施过程和实现方式均可适用于该终端实施例中,且能达到相同的技术效果。
或者,包括处理器及通信接口,其中,通信接口用于接收第一UE发送的第一请求消息,第一请求消息用于释放与第二UE相关的U2U中继链接;处理器用于响应于通信接口接收的第一请求消息,执行对与第二UE相关的U2U中继链接的释放相关操作。其中,第一请求消息是第一UE在满足第一条件的情况下发送的,第一条件包括以下至少之一:第一UE为通过中继UE与第二UE连接的至少两个第三UE中的UE;第二UE为通过中继UE与第一UE连接的至少两个第四UE中的UE。该终端实施例与上述中继UE侧方法实施例对应,上述中继UE侧方法实施例的各个实施过程和实现方式均可适用于该终端实施例中,且能达到相同的技术效果。
或者,通信接口用于接收中继UE发送的第二请求消息,第二请求消息用于请求释放与第二UE相关的中继链接,第二请求消息包括用于指示第一UE的第二信息,第一UE与第二UE通过中继UE连接;处理器用于响应于第二请求消息,释放与第二UE相关的中继链接。其中,第二请求消息是中继UE在第一PC5单播链接为共享单播链接的情况下发送的,第一单播链接为中继UE与第二UE之间的PC5单播链接。该终端实施例与上述第二UE侧方法实施例对应,上述第二UE侧方法实施例的各个实施过程和实现方式均可适用于该终端实施例中,且能达到相同的技术效果。
具体地,图15为实现本申请实施例的一种终端的硬件结构示意图。
该终端1500包括但不限于:射频单元1501、网络模块1502、音频输出单元1503、输入单元1504、传感器1505、显示单元1506、用户输入单元1507、接口单元1508、存储器1509以及处理器1510等中的至少部分部件。
本领域技术人员可以理解,终端1500还可以包括给各个部件供电的电源(比如电池),电源可以通过电源管理***与处理器1510逻辑相连,从而通过电源管理***实现管理充电、放电、以及功耗管理等功能。图15中示出的终端结构并不构成对终端的限定,终端可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置,在此不再赘述。
其中,射频单元1501,用于在满足第一条件的情况下,向中继UE发送第一请求消息,第一请求消息用于请求释放与第二UE相关的U2U中继链接;
其中,第一条件包括以下至少之一:
第一UE为通过中继UE与第二UE连接的至少两个第三UE中的UE;
第二UE为通过中继UE与第一UE连接的至少两个第四UE中的UE。
一种可能的实现方式中,所述第一请求消息包括用于指示所述第二UE的第一信息,第一信息包括以下至少之一:第二UE的标识;第二UE的互联网协议IP地址;第二UE的层2标识;第二UE的MAC地址。
一种可能的实现方式中,第一请求消息为以下之一:
PC5单播链接释放请求消息;
PC5单播链接修改请求消息;
用于释放特定U2U中继链接的专用请求消息。
一种可能的实现方式中,在第一请求消息为PC5单播链路修改请求消息的情况下,第一请求消息中还包括第一移除操作指示信息;
其中,第一移除操作指示信息用于U2U中继链接的释放。
一种可能的实现方式中,第一射频单元1501,用于在向中继UE发送第一请求消息之后,接收中继UE发送的第一回复消息,第一回复消息用于指示与第二UE相关的U2U中继链接的释放结果。
一种可能的实现方式中,处理器1510,用于在射频单元1501向中继UE发送第一请求消息之后,保持与第五UE之间的U2U中继链接;
其中,第五UE包括至少两个第四UE中除第二UE之外的UE。
一种可能的实现方式中,上述与第二UE相关的U2U中继链接,包括以下任一项:
中继UE与第二UE之间的第一PC5单播链接;
第一PC5单播链接中与第一UE相关的PC5上下文。
在本申请实施例提高的终端中,在多个UE(如至少两个源UE或至少两个目标UE)共用相同中继UE的场景中,即在共享中继UE的U2U通信场景中,当该多个UE中的终端需要释放其与特定UE之间U2U中继链接时,由于该终端可以向中继UE发送包括指示特定UE的第一信息的释放请求消息,因此可以确保中继UE可以准确地对与特定UE相关的U2U链路进行释放。
或者:其中,射频单元1501,用于接收第一UE发送的第一请求消息,第一请求消息用于释放与第二UE相关的U2U中继链接;可选的,第一请求消息包括用于指示第二UE的第一信息;
处理器1510,用于响应于射频单元1501接收的第一请求消息,执行对与第二UE相关的U2U中继链接的释放相关操作;
其中,第一请求消息是第一UE在满足第一条件的情况下发送的,第一条件包括以下至少之一:
第一UE为通过中继UE与第二UE连接的至少两个第三UE中的UE;
第二UE为通过中继UE与第一UE连接的至少两个第四UE中的UE。
一种可能的实现方式中,处理器1510,具体用于:
在第一PC5单播链接为非共享单播链接的情况下,发起第一PC5单播链接的释放过程;
在第一PC5单播链接为共享单播链接的情况下,通过射频单元1501向第二UE发送第二请求消息;
其中,第一PC5单播链接为中继UE与第二UE之间的PC5单播链接;
其中,第二请求消息用于请求释放与第二UE相关的U2U中继链接,第二请求消息包括用于指示第一UE的第二信息。
一种可能的实现方式中,所述第一请求消息包括用于指示所述第二UE的第一信息,第一信息包括以下至少之一:第二UE的标识;第二UE的IP地址;第二UE的层2标识;第二UE的MAC地址。
一种可能的实现方式中,处理器1510,还用于在发起第一PC5单播链接的释放过程之后,保持与第六UE之间的PC5单播链接;和/或,删除第二UE的PC5上下文;
其中,第六UE包括:至少两个第三UE;至少两个第四UE中除第二UE之外的UE。
一种可能的实现方式中,第一请消息求消息为以下之一:PC5单播链接释放请求消息;PC5单播链接修改请求消息;用于释放特定U2U中继链接的专用请求消息。
一种可能的实现方式中,第一请求消息为PC5单播链接修改请求消息,且第一请求消息还包括第一移除操作指示信息;
处理器1510,具体用于根据第一移除操作指示信息和第一信息,执行对与第二UE相关的U2U中继链接的释放相关操作。
一种可能的实现方式中,第二信息包括以下至少之一:第一UE的标识;第一UE的IP地址;第一UE的层2标识;第一UE的MAC地址。
一种可能的实现方式中,第二请求消息为以下之一:PC5单播链接释放请求消息;PC5单播链接修改请求消息;用于释放特定U2U中继链接的专用请求消息。
一种可能的实现方式中,第二请求消息为PC5单播链接修改请求消息,且第二请求消息中还包括第二移除操作指示信息;其中,第二移除操作指示信息用于U2U中继链接的释放。
一种可能的实现方式中,射频单元1501,用于在处理器1510执行对与第二UE相关的U2U中继链接的释放相关操作之后,向第一UE发送第一回复消息,第一回复消息用于指示与第二UE相关的U2U中继链接的释放结果。
一种可能的实现方式中,射频单元1501,还用于在向第一UE发送第一回复消息之前,接收第二UE发送的第二回复消息,第二回复用于指示与第二UE相关的U2U中继链接的释放结果;
射频单元1501,具体用于根据第二回复消息,向第一UE发送第一回复消息。
在本申请实施例提供的终端中,在接收到请求第一UE发送的释放与第二UE相关的中继链路的第一请求消息时,由于可以根据该根据该请求消息仅对该与特定UE相关的中继链路进行释放,因此可以确保第一UE和/或第二UE能够继续通过中继UE其他UE进行通信,如此可以提高通信***的稳定性能。
或者:其中,射频单元1501,用于接收中继UE发送的第二请求消息,第二请求消息用于请求释放与第二UE相关的中继链接,第二请求消息包括用于指示第一UE的第二信息,第一UE与第二UE通过中继UE连接;
处理器1510,用于响应于射频单元1501接收的第二请求消息,释放与第二UE相关的中继链接;
其中,第二请求消息是中继UE在第一PC5单播链接为共享单播链接的情况下发送的,第一单播链接为中继UE与第二UE之间的PC5单播链接。
一种可能的实现方式中,处理器1510,具体用于删除第一PC5单播链接中与第一UE相关的PC5上下文。
一种可能的实现方式中,第二信息包括以下至少之一:第一UE的标识;第一UE的IP地址;
第一UE的层2标识;第一UE的MAC地址。
一种可能的实现方式中,第二请求消息为以下之一:PC5单播链接释放请求消息;PC5单播链接修改请求消息;用于释放特定U2U中继链接的专用请求消息。
一种可能的实现方式中,第二请求消息为PC5单播链接释放请求消息或PC5单播链接修改请求消息;
处理器1510,还用于在射频单元1501接收中继UE发送的第二请求消息之后,保持第一PC5单播链接。
一种可能的实现方式中,第二请求消息为PC5单播链接修改请求消息,且第二请求消息还包括第二移除操作指示信息,第二移除操作指示信息用于U2U中继链接的释放;
处理器1510,具体用于根据第二信息和第二移除操作指示信息,释放与第二UE相关的中继链接。
一种可能的实现方式中,终端还包括:射频单元1501。射频单元1501,用于在处理器1510释放与第二UE相关的中继链接之后,向中继UE发送第二回复消息,第二回复消息用于指示与第二UE相关的中继链接的释放结果。
在本申请实施例提供的终端中,在第一UE需求释放与终端相关的U2U中继链接的情况下,且中继UE与终端之间的PC5单播链接为共享单播链接时,由于可以由终端执行与终端相关的U2U中继链接的释放操作,因此可以确保终端能够在释放与终端相关的U2U中继链接之后,仍然能够通过中继UE与至少两个第三UE中除第一UE外的UE进行通信。
应理解的是,本申请实施例中,输入单元1504可以包括图形处理单元(GraphicsProcessingUnit,GPU)15041和麦克风15042,图形处理器15041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元1506可包括显示面板15061,可以采用液晶显示器、有机发光二极管等形式来配置显示面板15061。用户输入单元1507包括触控面板15071以及其他输入设备15072中的至少一种。触控面板15071,也称为触摸屏。触控面板15071可包括触摸检测装置和触摸控制器两个部分。其他输入设备15072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆,在此不再赘述。
本申请实施例中,射频单元1501接收来自网络侧设备的下行数据后,可以传输给处理器1510进行处理;另外,射频单元1501可以向网络侧设备发送上行数据。通常,射频单元1501包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器1509可用于存储软件程序或指令以及各种数据。存储器1509可主要包括存储程序或指令的第一存储区和存储数据的第二存储区,其中,第一存储区可存储操作***、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外,存储器1509可以包括易失性存储器或非易失性存储器,或者,存储器1509可以包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-OnlyMemory,ROM)、可编程只读存储器(ProgrammableROM,PROM)、可擦除可编程只读存储器(ErasablePROM,EPROM)、电可擦除可编程只读存储器(ElectricallyEPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(RandomAccessMemory,RAM),静态随机存取存储器(StaticRAM,SRAM)、动态随机存取存储器(DynamicRAM,DRAM)、同步动态随机存取存储器(SynchronousDRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(DoubleDataRateSDRAM,DDRSDRAM)、增强型同步动态随机存取存储器(EnhancedSDRAM,ESDRAM)、同步连接动态随机存取存储器(SynchlinkDRAM,SLDRAM)和直接内存总线随机存取存储器(DirectRambusRAM,DRRAM)。本申请实施例中的存储器1509包括但不限于这些和任意其它适合类型的存储器。
处理器1510可包括一个或多个处理单元;可选的,处理器1510集成应用处理器和调制解调处理器,其中,应用处理器主要处理涉及操作***、用户界面和应用程序等的操作,调制解调处理器主要处理无线通信信号,如基带处理器。可以理解的是,上述调制解调处理器也可以不集成到处理器1510中。
本申请实施例还提供一种可读存储介质,所述可读存储介质上存储有程序或指令,该程序或指令被处理器执行时实现上述中继链路释放方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
其中,所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质,可以是非易失性的,也可以是非瞬态的。可读存储器,可以包括计算机可读存储介质, 如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
本申请实施例另提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现上述中继链路释放方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
应理解,本申请实施例提到的芯片还可以称为***级芯片,***芯片,芯片***或片上***芯片等。
本申请实施例另提供了一种计算机程序/程序产品,所述计算机程序/程序产品被存储在存储介质中,所述计算机程序/程序产品被至少一个处理器执行以实现上述中继链路释放方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供了一种通信***,该通信***包括:与上述第一UE侧方法实施例对应的通信设备和与上述中继UE侧方法实施例对应的通信设备。与上述第一UE侧方法实施例对应的通信设备用于执行上述第一UE侧方法实施例中的步骤,与上述中继UE侧方法实施例对应的通信设备用于执行中继UE侧方法实施例中的的步骤。
或者该通信***包括:与上述第一UE侧方法实施例对应的通信设备、与上述中继UE侧方法实施例对应的通信设备以及与上述第二UE侧方法实施例对应的通信设备。与上述第一UE侧方法实施例对应的通信设备用于执行上述第一UE侧方法实施例中的步骤,与上述中继UE侧方法实施例对应的通信设备用于执行中继UE侧方法实施例中的的步骤,与上述第二UE侧方法实施例对应的通信设备用于执行上述第二UE侧方法实施例中的步骤。
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外,需要指出的是,本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能,还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能,例如,可以按不同于所描述的次序来执行所描述的方法,并且还可以添加、省去、或组合各种步骤。另外,参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端(可以是手机,计算机,服务器,空调器,或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述,但是本申请并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本申请的启示下,在不脱离本申请宗旨和权利要求所保护的范围情况下,还可做出很多形式,均属于本申请的保护之内。

Claims (42)

  1. 一种中继链路释放方法,所述方法包括:
    在满足第一条件的情况下,第一用户设备UE向中继UE发送第一请求消息,所述第一请求消息用于请求释放与第二UE相关的U2U中继链接;
    其中,所述第一条件包括以下至少之一:
    所述第一UE为通过所述中继UE与所述第二UE连接的至少两个第三UE中的UE;
    所述第二UE为通过所述中继UE与所述第一UE连接的至少两个第四UE中的UE。
  2. 根据权利要求1所述的方法,其中,所述第一请求消息包括用于指示所述第二UE的第一信息,所述第一信息包括以下至少之一:
    所述第二UE的标识;
    所述第二UE的互联网协议IP地址;
    所述第二UE的层2标识;
    所述第二UE的多址接入信道MAC地址。
  3. 根据权利要求1所述的方法,其中,所述第一请求消息为以下之一:
    直连通信接口PC5单播链接释放请求消息;
    PC5单播链接修改请求消息;
    用于释放特定U2U中继链接的专用请求消息。
  4. 根据权利要求3所述的方法,其中,在所述第一请求消息为PC5单播链路修改请求消息的情况下,所述第一请求消息中还包括第一移除操作指示信息;
    其中,所述第一移除操作指示信息用于U2U中继链接的释放。
  5. 根据权利要求2所述的方法,其中,所述第一UE向中继UE发送第一请求消息之后,所述方法还包括:
    所述第一UE接收所述中继UE发送的第一回复消息,所述第一回复消息用于指示所述与第二UE相关的U2U中继链接的释放结果。
  6. 根据权利要求1所述的方法,其中,所述第一UE向中继UE发送第一请求消息之后,所述方法还包括:
    所述第一UE保持与第五UE之间的U2U中继链接;
    其中,所述第五UE包括所述至少两个第四UE中除所述第二UE之外的UE。
  7. 根据权利要求1所述的方法,其中,所述与第二UE相关的U2U中继链接,包括以下任一项:
    所述中继UE与所述第二UE之间的第一PC5单播链接;
    所述第一PC5单播链接中与所述第一UE相关的PC5上下文。
  8. 一种中继链路释放方法,所述方法包括:
    中继UE接收第一UE发送的第一请求消息,所述第一请求消息用于释放与第二UE相关的U2U中继链接;
    所述中继UE响应于所述第一请求消息,执行对所述与第二UE相关的U2U中继链接的释放相关操作;
    其中,所述第一请求消息是所述第一UE在满足第一条件的情况下发送的,所述第一条件包括以下至少之一:
    所述第一UE为通过所述中继UE与所述第二UE连接的至少两个第三UE中的UE;
    所述第二UE为通过所述中继UE与所述第一UE连接的至少两个第四UE中的UE。
  9. 根据权利要求8所述的方法,其中,所述执行对所述与第二UE相关的U2U中继链接的释放相关操作,包括以下之一:
    在第一PC5单播链接为非共享单播链接的情况下,所述中继UE发起所述第一PC5单播链接的释放过程;
    在所述第一PC5单播链接为共享单播链接的情况下,所述中继UE向所述第二UE发送第二请求消息;
    其中,所述第一PC5单播链接为所述中继UE与所述第二UE之间的PC5单播链接;
    其中,所述第二请求消息用于请求释放所述与第二UE相关的U2U中继链接,所述第二请求消息包括用于指示所述第一UE的第二信息。
  10. 根据权利要求8所述的方法,其中,所述第一请求消息包括用于指示所述第二UE的第一信息,所述第一信息包括以下至少之一:
    所述第二UE的标识;
    所述第二UE的IP地址;
    所述第二UE的层2标识;
    所述第二UE的多址接入信道MAC地址。
  11. 根据权利要求9所述的方法,其中,所述中继UE发起所述第一PC5单播链接的释放过程之后,所述方法还包括以下至少之一:
    所述中继UE保持与第六UE之间的PC5单播链接;
    所述中继UE删除所述第二UE的PC5上下文;
    其中,所述第六UE包括:
    所述至少两个第三UE;
    所述至少两个第四UE中除所述第二UE之外的UE。
  12. 根据权利要求8所述的方法,其中,所述第一请消息求消息为以下之一:
    PC5单播链接释放请求消息;
    PC5单播链接修改请求消息;
    用于释放特定U2U中继链接的专用请求消息。
  13. 根据权利要求12所述的方法,其中,所述第一请求消息包括用于指示所述第二UE的第一信息,所述第一请求消息为PC5单播链接修改请求消息,且所述第一请求消息还包括第一移除操作指示信息;
    所述执行对所述与第二UE相关的U2U中继链接的释放相关操作,包括:
    所述中继UE根据所述第一移除操作指示信息和所述第一信息,执行对所述与第二UE相关的U2U中继链接的释放相关操作。
  14. 根据权利要求8所述的方法,其中,所述第二信息包括以下至少之一:
    所述第一UE的标识;
    所述第一UE的IP地址;
    所述第一UE的层2标识;
    所述第一UE的MAC地址。
  15. 根据权利要求8所述的方法,其中,所述第二请求消息为以下之一:
    PC5单播链接释放请求消息;
    PC5单播链接修改请求消息;
    用于释放特定U2U中继链接的专用请求消息。
  16. 根据权利要求15所述的方法,其中,所述第二请求消息为PC5单播链接修改请求消息,且所述第二请求消息中还包括第二移除操作指示信息;
    其中,所述第二移除操作指示信息用于U2U中继链接的释放。
  17. 根据权利要求8所述的方法,其中,所述执行对所述与第二UE相关的U2U中继链接的释放相关操作之后,所述方法还包括:
    所述中继UE向所述第一UE发送第一回复消息,所述第一回复消息用于指示所述与第二UE相关的U2U中继链接的释放结果。
  18. 根据权利要求17所述的方法,其中,所述中继UE向所述第一UE发送第一回复消息之前,所述方法还包括:
    所述中继UE接收所述第二UE发送的第二回复消息,所述第二回复用于指示所述与第二UE相关的U2U中继链接的释放结果;
    所述中继UE向所述第一UE发送第一回复消息,包括:
    所述中继UE根据所述第二回复消息,向所述第一UE发送所述第一回复消息。
  19. 一种中继链路释放方法,所述方法包括:
    第二UE接收中继UE发送的第二请求消息,所述第二请求消息用于请求释放与所述第二UE相关的中继链接,所述第二请求消息包括用于指示第一UE的第二信息,所述第一UE与所述第二UE通过所述中继UE连接;
    所述第二UE响应于所述第二请求消息,释放所述与第二UE相关的中继链接;
    其中,所述第二请求消息是所述中继UE在第一PC5单播链接为共享单播链接的情况下发送的,所述第一单播链接为所述中继UE与所述第二UE之间的PC5单播链接。
  20. 根据权利要求19所述的方法,其中,所述释放所述与第二UE相关的中继链接,包括:
    所述第二UE删除所述第一PC5单播链接中与所述第一UE相关的PC5上下文。
  21. 根据权利要求19所述的方法,其中,所述第二信息包括以下至少之一:
    所述第一UE的标识;
    所述第一UE的IP地址;
    所述第一UE的层2标识;
    所述第一UE的MAC地址。
  22. 根据权利要求19所述的方法,其中,所述第二请求消息为以下之一:
    PC5单播链接释放请求消息;
    PC5单播链接修改请求消息;
    用于释放特定U2U中继链接的专用请求消息。
  23. 根据权利要求22所述的方法,其中,所述第二请求消息为PC5单播链接释放请求消息或PC5单播链接修改请求消息;
    所述第二UE接收中继UE发送的第二请求消息之后,所述方法还包括:
    所述第二UE保持与所述中继UE之间的第一PC5单播链接。
  24. 根据权利要求22所述的方法,其中,所述第二请求消息为PC5单播链接修改请求消息,且所述第二请求消息还包括第二移除操作指示信息,所述第二移除操作指示信息用于U2U中继链接的释放;
    所述释放所述与第二UE相关的中继链接,包括:
    所述第二UE根据所述第二信息和所述第二移除操作指示信息,释放所述与第二UE相关的中继链接。
  25. 根据权利要求19所述的方法,其中,所述释放所述与第二UE相关的中继链接之后,所述方法还包括:
    所述第二UE向所述中继UE发送第二回复消息,所述第二回复消息用于指示所述与第二UE相关的中继链接的释放结果。
  26. 一种中继链路释放装置,所述装置包括:发送模块;
    所述发送模块,用于在满足第一条件的情况下,向中继UE发送第一请求消息,所述第一请求消息用于请求释放与第二UE相关的U2U中继链接;
    其中,所述第一条件包括以下至少之一:
    第一UE为通过所述中继UE与所述第二UE连接的至少两个第三UE中的UE;
    所述第二UE为通过所述中继UE与所述第一UE连接的至少两个第四UE中的UE。
  27. 根据权利要求26所述的装置,其中,所述第一请求消息包括用于指示所述第二UE的第一信息,所述第一信息包括以下至少之一:
    所述第二UE的标识;
    所述第二UE的互联网协议IP地址;
    所述第二UE的层2标识;
    所述第二UE的多址接入信道MAC地址。
  28. 根据权利要求26所述的装置,其中,所述第一请求消息为以下之一:
    PC5单播链接释放请求消息;
    PC5单播链接修改请求消息;
    用于释放特定U2U中继链接的专用请求消息。
  29. 根据权利要求28所述的装置,其中,在所述第一请求消息为PC5单播链路修改请求消息的情况下,所述第一请求消息中还包括第一移除操作指示信息;
    其中,所述第一移除操作指示信息用于U2U中继链接的释放。
  30. 根据权利要求27所述的装置,其中,所述装置还包括:第一接收模块;
    所述第一接收模块,用于在所述发送模块向中继UE发送第一请求消息之后,接收所述中继UE发送的第一回复消息,所述第一回复消息用于指示所述与第二UE相关的U2U中继链接的释放结果。
  31. 根据权利要求26所述的装置,其中,所述装置还包括:处理模块;
    所述处理模块,用于在所述发送模块向中继UE发送第一请求消息之后,保持与第五UE之间的U2U中继链接;
    其中,所述第五UE包括所述至少两个第四UE中除所述第二UE之外的UE。
  32. 根据权利要求26所述的装置,其中,所述与第二UE相关的U2U中继链接,包括以下任一项:
    所述中继UE与所述第二UE之间的第一PC5单播链接;
    所述第一PC5单播链接中与所述第一UE相关的PC5上下文。
  33. 一种中继链路释放装置,所述装置包括:接收模块和处理模块;
    所述接收模块,用于接收第一UE发送的第一请求消息,所述第一请求消息用于释放与第二UE相关的U2U中继链接;
    所述处理模块,用于响应于所述接收模块接收的所述第一请求消息,执行对所述与第二UE相关的U2U中继链接的释放相关操作;
    其中,所述第一请求消息是所述第一UE在满足第一条件的情况下发送的,所述第一条件包括以下至少之一:
    所述第一UE为通过中继UE与所述第二UE连接的至少两个第三UE中的UE;
    所述第二UE为通过所述中继UE与所述第一UE连接的至少两个第四UE中的UE。
  34. 根据权利要求33所述的装置,其中,所述处理模块,具体用于:
    在第一PC5单播链接为非共享单播链接的情况下,发起所述第一PC5单播链接的释放过程;
    在所述第一PC5单播链接为共享单播链接的情况下,向所述第二UE发送第二请 求消息;
    其中,所述第一PC5单播链接为所述中继UE与所述第二UE之间的PC5单播链接;
    其中,所述第二请求消息用于请求释放所述与第二UE相关的U2U中继链接,所述第二请求消息包括用于指示所述第一UE的第二信息。
  35. 根据权利要求33所述的装置,其中,所述处理模块,还用于在发起所述第一PC5单播链接的释放过程之后,保持与第六UE之间的PC5单播链接;和/或,删除所述第二UE的PC5上下文;
    其中,所述第六UE包括:所述至少两个第三UE;所述至少两个第四UE中除所述第二UE之外的UE。
  36. 一种中继链路释放装置,所述装置包括:接收模块和处理模块;
    所述接收模块,用于接收中继UE发送的第二请求消息,所述第二请求消息用于请求释放与所述第二UE相关的中继链接,所述第二请求消息包括用于指示第一UE的第二信息,所述第一UE与所述第二UE通过所述中继UE连接;
    所述处理模块,用于响应于所述接收模块接收的第二请求消息,释放所述与第二UE相关的中继链接;
    其中,所述第二请求消息是所述中继UE在第一PC5单播链接为共享单播链接的情况下发送的,所述第一单播链接为所述中继UE与所述第二UE之间的PC5单播链接。
  37. 根据权利要求36所述的装置,其中,所述处理模块,具体用于删除所述第一PC5单播链接中与所述第一UE相关的PC5上下文。
  38. 一种通信设备,包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求1至7中任一项所述的中继链路释放方法的步骤。
  39. 一种通信设备,包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求8至18中任一项所述的中继链路释放方法的步骤。
  40. 一种通信设备,包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求19至25中任一项所述的中继链路释放方法的步骤。
  41. 一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如权利要求1至7中任一项所述的中继链路释放方法,或者如权利要求8至18中任一项所述的中继链路释放方法,或者如权利要求9至25中任一项所述的中继链路释放方法的步骤。
  42. 一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如权利要求1至7中任一项所述的中继链路释放方法,或者如权利要求8至18中任一项所述的中继链路释放方法,或者如权利要求9至25中任一项所述的中继链路释放方法。
PCT/CN2023/127780 2022-11-04 2023-10-30 中继链路释放方法、装置及通信设备 WO2024093919A1 (zh)

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