WO2023050352A1 - 一种发送切换辅助信息的方法、切换方法、装置及介质 - Google Patents

一种发送切换辅助信息的方法、切换方法、装置及介质 Download PDF

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Publication number
WO2023050352A1
WO2023050352A1 PCT/CN2021/122300 CN2021122300W WO2023050352A1 WO 2023050352 A1 WO2023050352 A1 WO 2023050352A1 CN 2021122300 W CN2021122300 W CN 2021122300W WO 2023050352 A1 WO2023050352 A1 WO 2023050352A1
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WIPO (PCT)
Prior art keywords
user equipment
source layer
handover
identifier
relay
Prior art date
Application number
PCT/CN2021/122300
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English (en)
French (fr)
Inventor
杨星
Original Assignee
北京小米移动软件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN202180003061.1A priority Critical patent/CN114080836B/zh
Priority to PCT/CN2021/122300 priority patent/WO2023050352A1/zh
Publication of WO2023050352A1 publication Critical patent/WO2023050352A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present disclosure relates to the technical field of wireless communication, and in particular, to a method for sending handover auxiliary information, a handover method, a device, and a readable storage medium.
  • the communication interface between the user equipment and the base station is called Uu interface.
  • a direct link (sidelink) communication mode is introduced, and the interface between UE and UE is PC5 port.
  • the user equipment not directly connected to the base station device 102 is called remote UE or remote user equipment (remote user equipment, remote UE), and the user equipment serving as a relay node is called Relay UE or relay user equipment (relay user equipment, relay UE).
  • the communication methods between the remote user equipment and the base station may include: 1. direct communication, directly connected to the base station, and realize communication based on the Uu port; 2. relay communication, not directly connected to the base station, but through another user equipment as a relay The nodes communicate with the base station.
  • the present disclosure provides a method for sending handover assistance information, a handover method, a device, and a medium.
  • a method for sending handover assistance information which is applied to a user equipment, including:
  • the user equipment used for sidelink communication sends the source layer 2 identifier of the user equipment to the base station device.
  • the user equipment can actively report the source layer 2 identifier to the base station equipment.
  • the base station device can identify the user equipment corresponding to the identifier, so as to determine the first user equipment that can serve as the relay node.
  • the base station equipment can accurately instruct the second user equipment to handover to the first user equipment, so that the second user equipment is successfully handed over to the relay communication link.
  • the user equipment has a relay function.
  • the user equipment has a relay function, and is in a state of enabling the relay function.
  • the state of being in the state of turning on the relay function includes at least one of the following:
  • the user equipment has a relay function, and the channel transmission quality with the base station equipment meets a set transmission quality requirement.
  • the source layer 2 identifier of the user equipment includes: at least one source layer 2 identifier of the user equipment.
  • the method also includes:
  • the user equipment sends at least one service type corresponding to the source layer 2 identifier to the base station device, where the service type is a relay service type or a non-relay service type.
  • the source layer 2 identifier of the user equipment is: at least one source layer 2 identifier whose service type is a relay service type.
  • the method also includes:
  • the service type is at least one source layer 2 identifier of the relay service type.
  • the indication information is a sequence number in a source layer 2 identification list containing at least one source layer 2 identification sent to the base station device before the source layer 2 identification is changed.
  • a handover method applied to a base station device which includes:
  • the handover measurement result includes the source layer 2 identifier of the first user equipment
  • the base station device can identify the first user equipment corresponding to the identifier according to the source layer 2 identifier reported by the first user equipment, and select the first user equipment as a relay UE according to the handover measurement result reported by the second user equipment. On this basis, when instructing the second user equipment to perform handover, the base station equipment can accurately instruct the handover to the first user equipment, so that the second user equipment is successfully handed over to the relay communication link.
  • a communication device may be used to execute the steps performed by the user equipment in the above first aspect or any possible design of the first aspect.
  • the user equipment can implement each function in the above methods in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • the communication device may include a transceiver module, where the transceiver module may be used to support the communication device to perform communication.
  • the transceiver module is configured to send the source layer 2 identifier of the communication device used for sidelink communication to the base station device.
  • a communication device is provided.
  • the communication apparatus may be used to execute the steps performed by the base station device in the above second aspect or any possible design of the second aspect.
  • the base station equipment can implement each function in the above methods in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • the communication device may include a processing module coupled to each other and a transceiver module, wherein the processing module may be used by the communication device to perform processing operations, such as generating information/messages that need to be sent, or The received signal is processed to obtain information/message, and the transceiver module can be used to support the communication device to communicate. Wherein, the transceiver module can be used to support the communication device to communicate.
  • the transceiver module is configured to receive the source layer 2 identifier sent by the first user equipment, and receive the handover measurement result sent by the second user equipment; wherein the handover measurement result includes the The source layer 2 identifier of the first user equipment.
  • a processing module configured to determine, according to the source layer 2 identifier, that the first user equipment is a relay user equipment.
  • the transceiver module is further configured to send configuration information required for handover to the first user equipment; send a handover command to the second user equipment; wherein the handover command is used to instruct handover to the first user equipment .
  • a communication device including a processor and a memory; the memory is used to store a computer program; the processor is used to execute the computer program, so as to realize the first aspect or the first Any possible design of the aspect.
  • a communication device including a processor and a memory; the memory is used to store a computer program; the processor is used to execute the computer program, so as to realize the second aspect or the second Any possible design of the aspect.
  • a computer-readable storage medium stores instructions (or called computer programs, programs), and when they are invoked and executed on a computer, the The computer implements the above first aspect or any possible design of the first aspect.
  • a computer-readable storage medium stores instructions (or called computer programs, programs), and when they are invoked and executed on a computer, the The computer implements the second aspect or any possible design of the second aspect.
  • FIG. 1 is a schematic diagram of a wireless communication system architecture provided by an embodiment of the present disclosure
  • Fig. 2 is a flow chart showing information interaction according to an exemplary embodiment
  • Fig. 3 is a flowchart showing a method for sending handover assistance information according to an exemplary embodiment
  • Fig. 4 is a flow chart showing another method for sending handover assistance information according to an exemplary embodiment
  • Fig. 5 is a structural diagram of a device for sending handover assistance information according to an exemplary embodiment
  • Fig. 6 is a structural diagram of another device for sending handover assistance information according to an exemplary embodiment
  • Fig. 7 is a structural diagram of a device for a switching method according to an exemplary embodiment
  • Fig. 8 is a structural diagram of an apparatus showing another handover method according to an exemplary embodiment.
  • the method for sending handover assistance information and the handover method provided by the embodiments of the present disclosure may be applied to a wireless communication system 100 , and the wireless communication system may include a user equipment 101 and a base station device 102 .
  • the user equipment 101 is configured to support carrier aggregation, and the user equipment 101 can be connected to multiple carrier components of the base station device 102, including a primary carrier component and one or more secondary carrier components.
  • the application scenarios of the wireless communication system 100 include but are not limited to long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, global Interoperability microwave access (worldwide interoperability for micro wave access, WiMAX) communication system, cloud radio access network (cloud radio access network, CRAN) system, future fifth-generation (5th-Generation, 5G) system, new wireless (new radio, NR) communication system or future evolved public land mobile network (public land mobile network, PLMN) system, etc.
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • TDD time division duplex
  • WiMAX global Interoperability microwave access
  • cloud radio access network cloud radio access network
  • CRAN cloud radio access network
  • 5G fifth-generation
  • new wireless new radio, NR
  • future evolved public land mobile network public land mobile network, PLMN
  • the user equipment 101 shown above may be user equipment (user equipment, UE), terminal (terminal), access terminal, terminal unit, terminal station, mobile station (mobile station, MS), remote station, remote terminal, mobile terminal ( mobile terminal), wireless communication equipment, terminal agent or user equipment, etc.
  • the user equipment 101 may have a wireless transceiver function, which can communicate with one or more network devices of one or more communication systems (such as wireless communication), and accept network services provided by the network devices, where the network devices include but not The illustration is limited to the base station device 102 .
  • the user equipment 101 may be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (PDA) device, a Handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, user equipment in future 5G networks or user equipment in future evolved PLMN networks, etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the network device may be an access network device (or called an access network site).
  • the access network device refers to a device that provides a network access function, such as a radio access network (radio access network, RAN) base station and the like.
  • the network device may include a base station (base station, BS) device 102, or include a base station device and a radio resource management device for controlling the base station device, and the like.
  • the network device may also include a relay station (relay device), an access point, and a base station in a future 5G network, a base station in a future evolved PLMN network or an NR base station, and the like.
  • Network devices can be wearable or in-vehicle.
  • the network device can also be a communication chip with a communication module.
  • network equipment includes but is not limited to: next-generation base station (gnodeB, gNB) in 5G, evolved node B (evolved node B, eNB) in LTE system, radio network controller (radio network controller, RNC), WCDMA Node B (node B, NB) in the system, wireless controller under the CRAN system, base station controller (basestation controller, BSC), base transceiver station (base transceiver station, BTS) in the GSM system or CDMA system, home base station (for example, home evolved nodeB, or home node B, HNB), baseband unit (baseband unit, BBU), transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP) or mobile switching center, etc.
  • gnodeB next-generation base station
  • gNB next-generation base station
  • eNB evolved node B
  • eNB evolved node B
  • RNC radio network controller
  • WCDMA Node B node B
  • Node B node
  • the user equipment 101 may switch the communication link with the base station equipment 102 to a relay link with another user equipment, and the user equipment 101 uses another user equipment to perform relay communication with the base station equipment 102 .
  • RRC Radio Resource Control
  • SLRB Sidelink Radio Bearer
  • the remote UE needs to report the handover measurement result including the relay UE ID to the base station, but the relay UE ID reported by the remote UE at this time is the ID under sidelink communication , the base station cannot identify the corresponding relay UE through the relay UE identifier, so the base station cannot accurately send the configuration for establishing a relay connection to the relay UE, resulting in failure of the remote UE to switch to the relay UE.
  • the user equipment such as the relay UE
  • the relay UE can actively report the source layer 2 identifier of the relay UE based on the direct communication connection with the base station. Therefore, after obtaining the handover measurement result reported by the remote UE, the base station can accurately identify the relay UE selected by the remote UE, and then can instruct the remote UE to switch to the relay UE.
  • FIG. 2 is a flowchart of a method for sending handover assistance information and a handover method according to an exemplary embodiment. As shown in FIG. 2, the method includes:
  • Step S21 the first user equipment 101 - 1 used for sidelink communication sends the source layer 2 identifier of the first user equipment 101 - 1 to the base station device 102 .
  • the second user equipment 101-2 sends the handover measurement result to the base station device 102; wherein, the handover measurement result includes the source layer 2 identifier of the first user equipment 101-1.
  • Step S22 the base station device 102 receives the source layer 2 identifier sent by the first user equipment 101-1, and receives the handover measurement result sent by the second user equipment 101-2.
  • Step S23 the base station device 102 determines according to the source layer 2 identifier that the first user equipment 101-1 is the relay user equipment.
  • Step S24 the base station device 102 sends configuration information required for handover to the first user equipment 101-1.
  • Step S25 the base station device 102 sends a handover command to the second user equipment 101-2; wherein, the handover command is used to instruct handover to the first user equipment 101-1.
  • the first user equipment 101-1 is a type of equipment that can be used as a relay UE in the user equipment 101
  • the second user equipment 101-2 is a type of equipment that can be used as a remote UE in the user equipment 101.
  • the first user equipment 101-1 reports its own source layer 2 identifier.
  • the second user equipment 101-2 reports the handover measurement result including the source layer 2 identifier of the first user equipment 101-1.
  • the handover measurement result is obtained by the second user equipment 101-2 based on the communication measurement with the first user equipment 101-1.
  • the handover measurement result may include: the source layer 2 identity of the first user equipment 101-1, the serving cell identity of the first user equipment 101-1, and the sidelink between the second user equipment 101-2 and the first user equipment 101-1 channel quality.
  • the user equipment can proactively report the source layer 2 identifier to the base station equipment.
  • the base station device identifies the first user equipment corresponding to the source layer 2 identifier according to the source layer 2 identifier reported by the first user equipment, so as to accurately determine the first user equipment that can serve as a relay node.
  • the base station equipment can accurately instruct the second user equipment to handover to the first user equipment, so that the second user equipment is successfully handed over to the relay communication link.
  • An embodiment of the present disclosure provides a method for sending handover assistance information. This method is performed by the user equipment 101 . This method includes:
  • the user equipment 101 used for sidelink communication sends the source layer 2 identifier of the user equipment 101 to the base station device 102 .
  • addressing needs to be performed according to a destination address and a source address.
  • the application layer of the user equipment 101 sends the source layer 2 address and the destination layer 2 address to the access layer, and the length is 24 bits.
  • the low-order 8 bits of the source layer 2 address are carried in the serial communication interface (Serial Communication Interface, SCI), and become the source layer 1 address; the remaining 16 bits are carried in the subheader of the media access control layer (MAC).
  • SCI Serial Communication Interface
  • MAC media access control layer
  • the lower 16 bits of the destination layer 2 address are carried in the SCI and become the destination layer 1 address; the remaining 8 bits are carried in the MAC subheader.
  • the source layer 2 identifier corresponds to the source layer 2 address.
  • the user equipment 101 includes: a first user equipment 101-1 and a second user equipment 101-2.
  • the first user equipment 101-1 is a type of user equipment 101 in the user equipment 101 as a relay UE
  • the second user equipment 101-2 is a type of user equipment 101 in the user equipment 101 that is a remote UE. Both the first user equipment 101-1 and the second user equipment 101-2 can support sidelink communication.
  • the source layer 2 identifier reported by the first user equipment can be identified by the base station device 102, so that the base station device 102 can accurately identify the relay UE, so that the remote UE can be handed over to the relay UE successfully.
  • An embodiment of the present disclosure provides a method for sending handover assistance information. This method is performed by the user equipment 101 . This method includes step S1-1, in this method:
  • the user equipment 101 has a relay function.
  • the user equipment 101 having a relay function may serve as a relay node for other user equipments to communicate with the base station device 102 .
  • the first user equipment 101 - 1 has a relay function and can report its own source layer 2 identifier to the base station device 102 .
  • the second user equipment 101-2 may communicate with the base station through the first user equipment 101-1.
  • An embodiment of the present disclosure provides a method for sending handover assistance information. This method is performed by the user equipment 101 . This method includes step S1-1, in this method:
  • the user equipment 101 has a relay function, and is in a state of enabling the relay function.
  • the user equipment 101 can enable the relay function, or start the discovery process. After the relay function is enabled, the first user equipment 101-1 as the relay UE and the second user equipment as the remote UE User devices 101-2 can discover each other.
  • being in the state of enabling the relay function includes at least one of the following:
  • both the first user equipment 101-1 and the second user equipment 101-2 are in the state of enabling the relay function, and the second user equipment 101-2 may be transmitting to the first user equipment 101-1
  • the relay discovery signal is received, or the relay discovery signal sent by the first user equipment 101-1 is received.
  • the first user equipment 101-1 sends a relay discovery signal to the second user equipment 101-2, or receives the relay discovery signal sent by the second user equipment 101-2.
  • the relay discovery signal carries information such as the identity of the sending end user equipment, the identity of the serving cell, and the like.
  • An embodiment of the present disclosure provides a method for sending handover assistance information. This method is performed by the user equipment 101 . This method includes step S1-1, in this method:
  • the user equipment has a relay function, and the channel transmission quality with the base station equipment 102 meets the set transmission quality requirement.
  • setting the transmission quality requirement includes: the channel transmission quality between the first user equipment 101-1 and the base station device 102 is higher than a first set threshold.
  • the first user equipment 101 may enable the relay function.
  • setting the transmission quality requirement includes: the channel transmission quality between the first user equipment 101-1 and the base station device 102 is lower than a second set threshold.
  • the first user equipment 101-1 may enable the relay function.
  • setting the transmission quality requirement includes: the channel transmission quality between the first user equipment 101-1 and the base station device 102 is higher than a first set threshold and lower than a second set threshold. Wherein, the second set threshold is greater than the first set threshold.
  • the first user equipment 101-1 may enable the relay function.
  • the first set threshold is a
  • the second set threshold is b
  • the channel transmission quality between the first user equipment 101-1 and the base station equipment 102 is within (a, b), at this time the first user equipment
  • the device 101-1 may enable the relay function.
  • An embodiment of the present disclosure provides a method for sending handover assistance information. This method is performed by the user equipment 101 . This method includes step S1-1, in this method:
  • the source layer 2 identifier of the user equipment 101 includes: at least one source layer 2 identifier of the user equipment 101 .
  • the user equipment 101 may include multiple source layer 2 identifiers according to different service types.
  • the service type of the user equipment 101 includes a relay service type and a non-relay service type, at least one source layer 2 identifier corresponding to the relay service type may be set, and the source layer 2 identifier corresponding to the non-relay service type may be Set to have at least one.
  • the first user equipment 101-1 may only report the source layer 2 identifier corresponding to the relay service type, and there may be one or more than one source layer 2 identifiers corresponding to the relay service type.
  • FIG. 3 is a flow chart of a method for sending handover assistance information according to an exemplary embodiment. The method includes:
  • Step S301 the user equipment used for sidelink communication sends the source layer 2 identifier of the user equipment to the base station equipment;
  • Step S302 the user equipment 101 sends at least one service type corresponding to the source layer 2 identifier to the base station equipment 102, wherein the service type is a relay service type or a non-relay service type.
  • the first user equipment 101-1 may simultaneously report that the service type corresponding to each source layer 2 identifier is: a relay service type or a non-relay service type.
  • An embodiment of the present disclosure provides a method for sending handover assistance information. This method is performed by the user equipment 101 . This method includes step S1-1, in this method:
  • the source layer 2 identifier of the user equipment 101 is: at least one source layer 2 identifier whose service type is a relay service type.
  • the source layer 2 identifier corresponding to the relay service type may be at least one of multiple source layer 2 identifiers.
  • An embodiment of the present disclosure provides a method for sending handover assistance information. This method is performed by the user equipment 101 . This method includes step S1-1, this method also includes:
  • the service type is at least one source layer 2 identifier of the relay service type.
  • the user equipment 101 when the user equipment 101 reports multiple source layer 2 identifiers, the user equipment 101 needs to determine the source layer 2 identifier in which the service type is a relay service type.
  • FIG. 4 is a flow chart of a method for sending handover assistance information according to an exemplary embodiment. The method includes:
  • Step S401 the user equipment used for sidelink communication sends the source layer 2 identifier of the user equipment to the base station equipment;
  • Step S402 in response to the change of the source layer 2 identity of the user equipment 101, sending the changed source layer 2 identity and/or indication information of the user equipment 101 to the base station; wherein the indication information is used to indicate the source layer before the change 2 identification.
  • the source layer 2 identifier of the user equipment 101 after the source layer 2 identifier of the user equipment 101 is changed, it needs to report to the base station device 102 in time, so that the base station device 102 can re-determine the relay UE according to the changed information.
  • the changed source layer 2 identifier and the source layer 2 identifier before the change may be reported.
  • the changed source layer 2 identifier and indication information may be reported, and the indication information may indicate the address of the source layer 2 identifier before the change.
  • the indication information is a sequence number in a source layer 2 ID list containing at least one source layer 2 ID sent to the base station device before the source layer 2 ID is changed.
  • the transmission after the source layer 2 identification is changed is the Nth transmission, and the latest one may be the (N-1)th transmission.
  • the indication information may be a sequence number in the source layer 2 identification list reported for the (N-1)th time.
  • the embodiment of the present disclosure provides a handover method. This method is performed by the base station device 102 . This method includes:
  • the base station device 102 receives the source layer 2 identifier sent by the first user equipment 101-1, and receives the handover measurement result sent by the second user equipment 101-2; wherein the handover measurement result includes the first user The source layer 2 identity of the device.
  • the base station device 102 determines, according to the source layer 2 identifier, that the first user equipment 101-1 is the relay user equipment.
  • the base station device 102 sends configuration information required for handover to the first user equipment 101-1.
  • the base station device 102 sends a handover command to the second user equipment 101-2; wherein, the handover command is used to instruct handover to the first user equipment.
  • the base station device 102 may determine the relay user equipment (relay UE) corresponding to the source layer 2 identifier according to the information reported by the first user equipment 101-1 and the second user equipment 101-2.
  • the base station device 102 sends the configuration information required for handover to the relay UE, so as to establish a link with the second user equipment 101-2.
  • the handover measurement result includes: source layer 2 identities of multiple first user equipments 101-1, and sidelinks between the second user equipment 101-2 and multiple first user equipments 101-1 channel quality.
  • the base station device 102 may select the target first user equipment as the relay UE according to the handover measurement result.
  • the handover command may carry related information of the selected relay UE, such as source layer 2 identifier and related configuration.
  • the second user equipment 101 - 2 can connect to the base station device 102 through the relay UE selected by the base station device 102 .
  • the base station device can identify the first user equipment corresponding to the identifier according to the source layer 2 identifier reported by the first user equipment, and select the first user equipment as a relay UE according to the handover measurement result reported by the second user equipment. On this basis, when instructing the second user equipment to perform handover, the base station equipment can accurately instruct the handover to the first user equipment, so that the second user equipment is successfully handed over to the relay communication link.
  • the first user equipment 101-1 has a relay function.
  • the first user equipment 101-1 has a relay function, and is in a state of enabling the relay function.
  • the state of enabling the relay function includes at least one of the following:
  • the first user equipment 101-1 has a relay function, and the channel transmission quality with the base station equipment meets a set transmission quality requirement.
  • the source layer 2 identifier of the first user equipment 101-1 includes: at least one source layer 2 identifier of the user equipment.
  • the method also includes:
  • the first user equipment 101-1 sends at least one service type corresponding to the source layer 2 identifier to the base station device, where the service type is a relay service type or a non-relay service type.
  • the source layer 2 identifier of the first user equipment 101-1 is: at least one source layer 2 identifier whose service type is a relay service type.
  • the method also includes:
  • the service type is at least one source layer 2 identifier of the relay service type.
  • the changed source layer 2 identity of the user equipment and/or indication information are sent to the base station; wherein, the indication information uses The source layer 2 identity before indicating the change.
  • the indication information is a sequence number in a source layer 2 ID list containing at least one source layer 2 ID sent to the base station device before the source layer 2 ID is changed.
  • the embodiment of the present disclosure also provides a communication device, which can have the function of the user equipment 101 in the above method embodiment, and is used to execute the user equipment 101 provided by the above embodiment. steps to execute.
  • This function can be implemented by hardware, and can also be implemented by software or hardware executes corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the communication apparatus 500 shown in FIG. 5 may serve as the user equipment 101 involved in the above method embodiment, and execute the steps performed by the user equipment 101 in the above method embodiment.
  • the communication device 500 may include a transceiver module 501 .
  • the transceiver module 501 can be used to support the communication device 500 to communicate, and the transceiver module 502 can have a wireless communication function, for example, can perform wireless communication with other communication devices through a wireless air interface.
  • the transceiver module 501 When executing the steps implemented by the user equipment 101, the transceiver module 501 is configured to send the source layer 2 identifier of the user equipment to the base station equipment; wherein the communication device is a user equipment supporting sidelink communication.
  • the device 600 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, and the like.
  • device 600 may include one or more of the following components: processing component 602, memory 604, power supply component 606, multimedia component 608, audio component 610, input/output (I/O) interface 612, sensor component 614, and communication component 616 .
  • the processing component 602 generally controls the overall operations of the device 600, such as those associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 602 may include one or more processors 620 to execute instructions to complete all or part of the steps of the above method.
  • processing component 602 may include one or more modules that facilitate interaction between processing component 602 and other components.
  • processing component 602 may include a multimedia module to facilitate interaction between multimedia component 608 and processing component 602 .
  • the memory 604 is configured to store various types of data to support operations at the device 600 . Examples of such data include instructions for any application or method operating on device 600, contact data, phonebook data, messages, pictures, videos, and the like.
  • the memory 604 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic or Optical Disk Magnetic Disk
  • the power supply component 606 provides power to various components of the device 600 .
  • Power components 606 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for device 600 .
  • the multimedia component 608 includes a screen that provides an output interface between the device 600 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.
  • the touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or slide action, but also detect duration and pressure associated with the touch or slide action.
  • the multimedia component 608 includes a front camera and/or a rear camera. When the device 600 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.
  • the audio component 610 is configured to output and/or input audio signals.
  • the audio component 610 includes a microphone (MIC) configured to receive external audio signals when the device 600 is in operation modes, such as call mode, recording mode and voice recognition mode. Received audio signals may be further stored in memory 604 or sent via communication component 616 .
  • the audio component 610 also includes a speaker for outputting audio signals.
  • the I/O interface 612 provides an interface between the processing component 602 and a peripheral interface module.
  • the peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.
  • Sensor assembly 614 includes one or more sensors for providing status assessments of various aspects of device 600 .
  • the sensor component 614 can detect the open/closed state of the device 600, the relative positioning of components, such as the display and keypad of the device 600, and the sensor component 614 can also detect a change in the position of the device 600 or a component of the device 600 , the presence or absence of user contact with the device 600 , the device 600 orientation or acceleration/deceleration and the temperature change of the device 600 .
  • the sensor assembly 614 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact.
  • Sensor assembly 614 may also include optical sensors, such as CMOS or CCD image sensors, for use in imaging applications.
  • the sensor component 614 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 616 is configured to facilitate wired or wireless communication between the apparatus 600 and other devices.
  • the device 600 can access wireless networks based on communication standards, such as WiFi, 4G or 5G, or a combination thereof.
  • the communication component 616 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 616 also includes a near field communication (NFC) module to facilitate short-range communication.
  • NFC near field communication
  • the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID Radio Frequency Identification
  • IrDA Infrared Data Association
  • UWB Ultra Wide Band
  • Bluetooth Bluetooth
  • apparatus 600 may be programmed by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation for performing the methods described above.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLDs programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor or other electronic component implementation for performing the methods described above.
  • non-transitory computer-readable storage medium including instructions, such as the memory 604 including instructions, which can be executed by the processor 620 of the device 600 to implement the above method.
  • the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.
  • the embodiment of the present disclosure also provides a communication device, which can have the function of the base station equipment 102 in the above method embodiment, and can be used to implement the method provided by the above method embodiment. Steps performed by device 102.
  • This function can be implemented by hardware, and can also be implemented by software or hardware executes corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the communication apparatus 700 shown in FIG. 7 may serve as the base station device 102 involved in the above method embodiment, and execute the steps performed by the base station device 102 in the above method embodiment.
  • the communication device 700 may include a processing module 701 and a transceiver module 702 coupled to each other.
  • the processing module 701 may be used by the communication device to perform processing operations, such as generating information/messages to be sent, or processing received signals to obtain information/messages.
  • the transceiver module 702 can be used to support the communication device 700 to communicate, and the transceiver module 702 can have a wireless communication function, for example, it can perform wireless communication with other communication devices through a wireless air interface.
  • the transceiver module 702 When executing the steps implemented by the base station equipment, the transceiver module 702 is configured to receive the source layer 2 identifier sent by the first user equipment, and receive the handover measurement result sent by the second user equipment; wherein the handover measurement result includes the first user equipment The source layer 2 identity.
  • the processing module 701 is configured to determine, according to the source layer 2 identifier, that the first user equipment is a relay user equipment.
  • the transceiver module 702 is further configured to send configuration information required for handover to the first user equipment; send a handover command to the second user equipment; wherein the handover command is used to instruct handover to the first user equipment user equipment.
  • an apparatus 800 includes a memory 801 , a processor 802 , a transceiver component 803 , and a power supply component 806 .
  • the memory 801 is coupled with the processor 802 and can be used to save the programs and data necessary for the communication device 800 to realize various functions.
  • the processor 802 is configured to support the communication device 800 to execute corresponding functions in the above methods, and the functions may be implemented by calling programs stored in the memory 801 .
  • the transceiver component 803 may be a wireless transceiver, and may be used to support the communication device 800 to receive signaling and/or data and send signaling and/or data through a wireless air interface.
  • the transceiver component 803 may also be called a transceiver unit or a communication unit, and the transceiver component 803 may include a radio frequency component 804 and one or more antennas 805, wherein the radio frequency component 804 may be a remote radio unit (remote radio unit, RRU), specifically It can be used for the transmission of radio frequency signals and the conversion of radio frequency signals and baseband signals, and the one or more antennas 805 can be specifically used for radiating and receiving radio frequency signals.
  • RRU remote radio unit
  • the processor 802 can perform baseband processing on the data to be sent, and then output the baseband signal to the radio frequency unit.
  • the radio frequency unit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 802, and the processor 802 converts the baseband signal into data and converts the data to process.
  • the user equipment used for sidelink communication actively reports the source layer 2 identifier to the base station.
  • the base station device can identify the first user equipment corresponding to the identifier according to the source layer 2 identifier reported by the first user equipment; combined with the handover measurement result reported by the second user equipment, the base station device can determine the first user equipment as a relay UE. Therefore, when the base station equipment instructs the second user equipment to perform handover, it can accurately instruct the handover to the first user equipment, so that the second user equipment is successfully handed over to the relay UE communication link.

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Abstract

本公开提供了一种发送切换辅助信息的方法、切换方法、装置及介质，应用于无线通信系统，其中发送切换辅助信息的方法包括：用于侧行链路sidelink通信的UE向基站设备发送所述UE的源层2标识。切换方法包括：接收第一UE发送的源层2标识以及接收第二UE发送的切换测量结果；根据源层2标识确定第一UE为中继UE；将切换所需配置信息发送至第一UE；向第二UE发送切换命令。本公开中，UE主动向基站上报源层2标识。基站设备根据第一UE上报的源层2标识，可识别到标识对应的第一UE；结合第二UE上报的切换测量结果，基站设备能够确定第一UE作为中继UE。从而基站设备命令第二UE进行切换时，能够准确指示切换至第一UE，使第二UE成功切换至中继通信链路。

Description

一种发送切换辅助信息的方法、切换方法、装置及介质 技术领域
本公开涉及无线通信技术领域，尤其涉及一种发送切换辅助信息的方法、切换方法、装置及可读存储介质。
背景技术
新空口(new radio，NR)系统中，用户设备与基站之间的通信接口称为Uu口。
为了支持用户设备(User Equipment，UE)与UE之间的直接通信，引入了直连链路(sidelink)通信方式，UE与UE之间的接口为PC5端口。如图1所示，在中继通信中，与基站设备102未直接连接的用户设备称为远端UE或远端用户设备(remote user equipment，remote UE)，作为中继节点的用户设备称为中继UE或中继用户设备(relay user equipment，relay UE)。远端用户设备与基站的通信方式可以包括：一、直接通信，与基站直接连接，基于Uu口实现通信；二、中继通信，与基站不直接连接，而是通过另一用户设备作为中继节点与基站实现通信。
发明内容
有鉴于此，本公开提供了一种发送切换辅助信息的方法、切换方法、装置及介质。
根据本公开实施例的第一方面，提供一种发送切换辅助信息的方法，应用于用户设备，其中，包括：
用于侧行链路sidelink通信的所述用户设备向基站设备发送所述用户设备的源层2标识。
采用此方法，用户设备可主动向基站设备上报源层2标识。基站设备根据用户设备上报的源层2标识，可识别到标识对应的用户设备，从而确定可作为中继节点的第一用户设备。在此基础上，基站设备在命令第二用户设备进行切换时，能够准确指示第二用户设备切换至第一用户设备，从而使第二用户设备成功切换至中继通信链路。
在一可能的实施方式中，其中，
所述用户设备具有中继功能。
在一可能的实施方式中，其中，
所述用户设备具有中继功能，以及，处于开启所述中继功能的状态。
在一可能的实施方式中，其中，
所述处于开启所述中继功能的状态，包括以下中的至少一种：
发送中继发现信号；
接收中继发现信号。
在一可能的实施方式中，其中，
所述用户设备具有中继功能，以及，与所述基站设备之间的信道传输质量满足设定传输质量要求。
在一可能的实施方式中，其中，
所述用户设备的源层2标识包括：所述用户设备的至少一个源层2标识。
在一可能的实施方式中，其中，
所述方法还包括：
所述用户设备向所述基站设备发送至少一个源层2标识对应的业务类型，其中，所述业务类型是中继业务类型或者非中继业务类型。
在一可能的实施方式中，其中，
所述用户设备的源层2标识为：业务类型是中继业务类型的至少一个源层2标识。
在一可能的实施方式中，其中，
所述方法还包括：
确定业务类型是中继业务类型的至少一个源层2标识。
在一可能的实施方式中，其中，
响应于所述用户设备的源层2标识发生更改，向基站发送所述用户设备的更改后的源层2标识和/或指示信息；其中，所述指示信息用于指示更改前的源层2标识。
在一可能的实施方式中，其中，
所述指示信息是源层2标识发生更改前向所述基站设备发送的包含至少一个所述源层2标识的源层2标识列表中的序号。
根据本公开实施例的第二方面，提供一种切换方法，应用于基站设备，其中，包括：
接收第一用户设备发送的源层2标识，以及，接收第二用户设备发送的切换测量结果； 其中，切换测量结果中包括所述第一用户设备的源层2标识；
根据所述源层2标识确定所述第一用户设备为中继用户设备；
向所述第一用户设备发送切换所需配置信息；
向所述第二用户设备发送切换命令；其中，所述切换命令用于指示切换至所述第一用户设备。
采用此方法，基站设备根据第一用户设备上报的源层2标识，可识别到标识对应的第一用户设备，根据第二用户设备上报的切换测量结果可选取第一用户设备作为中继UE。在此基础上，基站设备在命令第二用户设备进行切换时，能够准确指示切换至第一用户设备，从而使第二用户设备成功切换至中继通信链路。
根据本公开实施例的第三方面，提供一种通信装置。该通信装置可用于执行上述第一方面或第一方面的任一可能的设计中由用户设备执行的步骤。该用户设备可通过硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各方法中的各功能。
在通过软件模块实现第三方面所示通信装置时，该通信装置可包括收发模块，其中，收发模块可用于支持通信装置进行通信。
在执行上述第一方面所述步骤时，收发模块，用于向基站设备发送用于侧行链路sidelink通信的通信装置的源层2标识。
根据本公开实施例的第四方面，提供一种通信装置。该通信装置可用于执行上述第二方面或第二方面的任一可能的设计中由基站设备执行的步骤。该基站设备可通过硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各方法中的各功能。
在通过软件模块实现第四方面所示通信装置时，该通信装置可包括相互耦合的处理模块以及收发模块，其中，处理模块可用于通信装置执行处理操作，如生成需要发送的信息/消息，或对接收的信号进行处理以得到信息/消息，收发模块可用于支持通信装置进行通信。其中，收发模块可用于支持通信装置进行通信。
在执行上述第二方面所述步骤时，收发模块，用于接收第一用户设备发送的源层2标识，以及，接收第二用户设备发送的切换测量结果；其中，切换测量结果中包括所述第一用户设备的源层2标识。处理模块，用于根据所述源层2标识确定所述第一用户设备为中继用户设备。所述收发模块，还用于向所述第一用户设备发送切换所需配置信息；向所述第二用户设备发送切换命令；其中，所述切换命令用于指示切换至所述第一用户设备。
根据本公开实施例的第五方面，提供一种通信装置，包括处理器以及存储器；所述存储器用于存储计算机程序；所述处理器用于执行所述计算机程序，以实现第一方面或第一方面的任意一种可能的设计。
根据本公开实施例的第六方面，提供一种通信装置，包括处理器以及存储器；所述存储器用于存储计算机程序；所述处理器用于执行所述计算机程序，以实现第二方面或第二方面的任意一种可能的设计。
根据本公开实施例的第七方面，提供一种计算机可读存储介质，所述计算机可读存储介质中存储有指令(或称计算机程序、程序)，当其在计算机上被调用执行时，使得计算机执行上述第一方面或第一方面的任意一种可能的设计。
根据本公开实施例的第八方面，提供一种计算机可读存储介质，所述计算机可读存储介质中存储有指令(或称计算机程序、程序)，当其在计算机上被调用执行时，使得计算机执行上述第二方面或第二方面的任意一种可能的设计。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处所说明的附图用来提供对本公开实施例的进一步理解，构成本申请的一部分，本公开实施例的示意性实施例及其说明用于解释本公开实施例，并不构成对本公开实施例的不当限定。在附图中：
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开实施例的实施例，并与说明书一起用于解释本公开实施例的原理。
图1是本公开实施例提供的一种无线通信系统架构示意图；
图2是根据一示例性实施例示出的一种信息交互的流程图；
图3是根据一示例性实施例示出的一种发送切换辅助信息方法的流程图；
图4是根据一示例性实施例示出的另一种发送切换辅助信息方法的流程图；
图5是根据一示例性实施例示出的一种发送切换辅助信息的装置的结构图；
图6是根据一示例性实施例示出的另一种发送切换辅助信息的装置的结构图；
图7是根据一示例性实施例示出的一种切换方法的装置的结构图；
图8是根据一示例性实施例示出的另一种切换方法的装置的结构图。
具体实施方式
现结合附图和具体实施方式对本公开实施例进一步说明。
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
如图1所示，本公开实施例提供的发送切换辅助信息的方法及切换方法可应用于无线通信系统100，该无线通信系统可以包括用户设备101以及基站设备102。其中，用户设备101被配置为支持载波聚合，用户设备101可连接至基站设备102的多个载波单元，包括一个主载波单元以及一个或多个辅载波单元。
应理解，以上无线通信系统100既可适用于低频场景，也可适用于高频场景。无线通信系统100的应用场景包括但不限于长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)系统、全球互联微波接入(worldwide interoperability for micro wave access，WiMAX)通信系统、云无线接入网络(cloud radio access network，CRAN)系统、未来的第五代(5th-Generation，5G)系统、新无线(new radio，NR)通信系统或未来的演进的公共陆地移动网络(public land mobile network，PLMN)系统等。
以上所示用户设备101可以是用户设备(user equipment，UE)、终端(terminal)、接入终端、终端单元、终端站、移动台(mobile station，MS)、远方站、远程终端、移动终端(mobile terminal)、无线通信设备、终端代理或用户设备等。该用户设备101可具备无线收发功能，其能够与一个或多个通信系统的一个或多个网络设备进行通信(如无线通信)，并接受网络设备提供的网络服务，这里的网络设备包括但不限于图示基站设备102。
其中，用户设备101可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理personal digital assistant，PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、未来5G网络中的用户设备或者未来演进的PLMN网络中的用户设备等。
网络设备可以是接入网设备(或称接入网站点)。其中，接入网设备是指有提供网络接入功能的设备，如无线接入网(radio access network，RAN)基站等等。网络设备具体可包括基站(base station，BS)设备102，或包括基站设备以及用于控制基站设备的无线资源管理设备等。该网络设备还可包括中继站(中继设备)、接入点以及未来5G网络中的基站、未来演进的PLMN网络中的基站或者NR基站等。网络设备可以是可穿戴设备或车载设备。网络设备也可以是具有通信模块的通信芯片。
比如，网络设备包括但不限于：5G中的下一代基站(gnodeB，gNB)、LTE系统中的演进型节点B(evolved node B，eNB)、无线网络控制器(radio network controller，RNC)、WCDMA系统中的节点B(node B，NB)、CRAN系统下的无线控制器、基站控制器(basestation controller，BSC)、GSM系统或CDMA系统中的基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved nodeB，或home node B，HNB)、基带单元(baseband unit，BBU)、传输点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)或移动交换中心等。
在用户设备101与基站设备102通信过程中，随着用户设备101的移动，可能会远离基站设备102的网络覆盖范围。此种场景下，用户设备101可将与基站设备102之间的通信链路，切换至与另一用户设备的中继链路，用户设备101利用另一用户设备与基站设备102进行中继通信。
在中继通信中，远端UE与中继UE之间可通过侧行链路无线承载(Sidelink Radio Bearer，SLRB)来传输数据和无线资源控制(Radio Resource Control，RRC)信令。
在远端UE从基站切换至中继UE的过程中，远端UE需将包含中继UE标识的切换测量结果上报基站，但此时远端UE上报的中继UE标识为sidelink通信下的标识，基站无法通过该中继UE标识识别对应的中继UE，因此基站无法准确向中继UE发送用于建立中继连接的配置，导致远端UE切换至中继UE失败。
本公开中，用户设备如中继UE，基于与基站的直接通信连接，可主动上报中继UE的源层2标识。从而基站在获取到远端UE上报的切换测量结果后，可以准确识别到远端UE选取的中继UE，进而可命令远端UE切换至中继UE。
本公开实施例提供了一种发送切换辅助信息方法及切换方法。参照图2，图2是根据一示例性实施例示出的发送切换辅助信息方法及切换方法的流程图，如图2所示，此方法包括：
步骤S21、用于侧行链路sidelink通信的第一用户设备101-1向基站设备102发送第一用户设备101-1的源层2标识。第二用户设备101-2向基站设备102发送切换测量结果；其中，切换测量结果中包括第一用户设备101-1的源层2标识。
步骤S22、基站设备102接收第一用户设备101-1发送的源层2标识，以及，接收第二用户设备101-2发送的切换测量结果。
步骤S23、基站设备102根据源层2标识确定第一用户设备101-1为中继用户设备。
步骤S24、基站设备102向第一用户设备101-1发送切换所需配置信息。
步骤S25、基站设备102向第二用户设备101-2发送切换命令；其中，切换命令用于指示切换至第一用户设备101-1。
在一些可能的实施方式中，在步骤S22中，第一用户设备101-1为用户设备101中可作为中继UE的一类设备，第二用户设备101-2为用户设备101中作为远端UE的一类设备。第一用户设备101-1上报自身的源层2标识。第二用户设备101-2上报包含第一用户设备101-1源层2标识的切换测量结果。
在一些可能的实施方式中，切换测量结果是第二用户设备101-2基于与第一用户设备101-1的通信测量获得的。切换测量结果可以包括：第一用户设备101-1的源层2标识，第一用户设备101-1的服务小区标识，以及第二用户设备101-2与第一用户设备101-1间的sidelink信道质量。
本公开的方法中，用户设备可主动向基站设备上报源层2标识。基站设备根据第一用户设备上报的源层2标识，识别到源层2标识对应的第一用户设备，从而准确确定可作为中继节点的第一用户设备。在此基础上，基站设备在命令第二用户设备进行切换时，能够准确指示第二用户设备切换至第一用户设备，从而使第二用户设备成功切换至中继通信链路。
本公开实施例提供了一种发送切换辅助信息方法。此方法被用户设备101执行。此方法包括：
S1-1、用于侧行链路sidelink通信的所述用户设备101向基站设备102发送用户设备101的源层2标识。
在一些可能的实施方式中，用户设备101之间基于侧行链路通信过程中，用户设备101发送sidelink数据时，需要根据目的地址和源地址来进行寻址。用户设备101的应用层将源 层2地址和目的层2地址发送给接入层，长度均为24比特。其中，源层2地址的低位8比特在串行通信接口(Serial Communication Interface，SCI)中携带，成为源层1地址；剩余的16比特在媒体接入控制层(MAC)子头中携带。目的层2地址的低位16比特在SCI中携带，成为目的层1地址；剩余的8比特在MAC子头中携带。其中，源层2标识对应于源层2地址。
在一些可能的实施方式中，用户设备101包括：第一用户设备101-1和第二用户设备101-2。第一用户设备101-1是用户设备101中作为中继UE的一类用户设备101，第二用户设备101-2是用户设备101中作为远端UE的一类用户设备101。第一用户设备101-1及第二用户设备101-2均可支持侧行链路通信。
本公开的方法中，第一用户设备上报的源层2标识可供基站设备102识别，从而基站设备102可准确识别中继UE，使远端UE可以成功切换至中继UE。
本公开实施例提供了一种发送切换辅助信息方法。此方法被用户设备101执行。此方法包括步骤S1-1，此方法中：
所述用户设备101具有中继功能。
在一些可能的实施方式中，具有中继功能的用户设备101可以作为其他用户设备与基站设备102通信的中继节点。
在一个示例中，第一用户设备101-1具有中继功能，可向基站设备102上报自身的源层2标识。在第二用户设备101-2与基站设备102的通信质量下降时，第二用户设备101-2可通过第一用户设备101-1与基站通信。
本公开实施例提供了一种发送切换辅助信息方法。此方法被用户设备101执行。此方法包括步骤S1-1，此方法中：
所述用户设备101具有中继功能，以及，处于开启中继功能的状态。
在一些可能的实施方式中，用户设备101可开启中继功能，或称启动发现过程，在开启中继功能后，作为中继UE的第一用户设备101-1与作为远端UE的第二用户设备101-2可彼此发现。
在一些可能的实施方式中，处于开启中继功能的状态包括以下中的至少一种：
发送中继发现信号；
接收中继发现信号。
在一些可能的实施方式中，第一用户设备101-1与第二用户设备101-2均处于开启中继 功能的状态，第二用户设备101-2可以向第一用户设备101-1发送中继发现信号，或者接收第一用户设备101-1发送的中继发现信号。或者，第一用户设备101-1向第二用户设备101-2发送中继发现信号，或者接收第二用户设备101-2发送的中继发现信号。
在一些可能的实施方式中，中继发现信号中携带发送端用户设备的标识、服务小区标识等信息。
本公开实施例提供了一种发送切换辅助信息方法。此方法被用户设备101执行。此方法包括步骤S1-1，此方法中：
所述用户设备具有中继功能，以及，与基站设备102之间的信道传输质量满足设定传输质量要求。
在一些可能的实施方式中，设定传输质量要求包括：第一用户设备101-1与基站设备102间的信道传输质量高于第一设定门限。在满足此设定传输质量要求，第一用户设备101可以开启中继功能。
在一些可能的实施方式中，设定传输质量要求包括：第一用户设备101-1与基站设备102间的信道传输质量低于第二设定门限。在满足此设定传输质量要求，第一用户设备101-1可以开启中继功能。
在一些可能的实施方式中，设定传输质量要求包括：第一用户设备101-1与基站设备102间的信道传输质量高于第一设定门限且低于第二设定门限。其中，第二设定门限大于第一设定门限。在满足此设定传输质量要求，第一用户设备101-1可以开启中继功能。
在一个示例中，第一设定门限为a，第二设定门限为b，第一用户设备101-1与基站设备102间的信道传输质量在(a，b)内，此时第一用户设备101-1可以开启中继功能。
本公开实施例提供了一种发送切换辅助信息方法。此方法被用户设备101执行。此方法包括步骤S1-1，此方法中：
用户设备101的源层2标识包括：用户设备101的至少一个源层2标识。
在一些可能的实施方式中，用户设备101根据不同的业务类型，可以包括多个源层2标识。例如，用户设备101的业务类型包括中继业务类型和非中继业务类型，对应于中继业务类型的源层2标识可以设置有至少一个，对应于非中继业务类型的源层2标识可以设置有至少一个。
在一个示例中，第一用户设备101-1可以只上报对应于中继业务类型的源层2标识，对 应于中继业务类型的源层2标识可以是一个或多于一个。
本公开实施例提供了一种发送切换辅助信息方法。此方法被用户设备101执行。参照图3，图3是根据一示例性实施例示出的发送切换辅助信息方法的流程图，此方法包括：
步骤S301，用于侧行链路sidelink通信的所述用户设备向基站设备发送所述用户设备的源层2标识；
步骤S302、用户设备101向基站设备102发送至少一个源层2标识对应的业务类型，其中，业务类型是中继业务类型或者非中继业务类型。
在一示例中，第一用户设备101-1上报源层2标识的过程中，可同步上报每个源层2标识对应的业务类型是：中继业务类型或非中继业务类型。
本公开实施例提供了一种发送切换辅助信息方法。此方法被用户设备101执行。此方法包括步骤S1-1，此方法中：
用户设备101的源层2标识为：业务类型是中继业务类型的至少一个源层2标识。
在一些可能的实施方式中，第一用户设备101-1上报的源层2标识可以是多个。对应于中继业务类型的源层2标识可以是多个源层2标识中的至少一个。
本公开实施例提供了一种发送切换辅助信息方法。此方法被用户设备101执行。此方法包括步骤S1-1，此方法还包括：
确定业务类型是中继业务类型的至少一个源层2标识。
在一些可能的实施方式中，当用户设备101上报多个源层2标识，用户设备101需要确定其中业务类型是中继业务类型的源层2标识。
本公开实施例提供了一种发送切换辅助信息方法。此方法被用户设备101执行。参照图4，图4是根据一示例性实施例示出的发送切换辅助信息方法的流程图，此方法包括：
步骤S401，用于侧行链路sidelink通信的所述用户设备向基站设备发送所述用户设备的源层2标识；
步骤S402，响应于所述用户设备101的源层2标识发生更改，向基站发送用户设备101的更改后的源层2标识和/或指示信息；其中，指示信息用于指示更改前的源层2标识。
在一些可能的实施方式中，用户设备101的源层2标识发生更改后，需要及时上报基站设备102，以便于基站设备102根据更改后的信息重新确定中继UE。
在一示例中，用户设备101的源层2标识发生更改后，可上报更改后的源层2标识以及更改前的源层2标识。
在一示例中，用户设备101的源层2标识发生更改后，可上报更改后的源层2标识以及指示信息，指示信息可以指示更改前的源层2标识的地址。
在一些可能的实施方式中，指示信息是源层2标识发生更改前向所述基站设备发送的包含至少一个所述源层2标识的源层2标识列表中的序号。
在一个示例中，源层2标识发生更改后的发送为第N次发送，最近一次可以是第(N-1)次。指示信息可以是第(N-1)次上报的源层2标识列表中的序号。
本公开实施例提供了一种切换方法。此方法被基站设备102执行。此方法包括：
S2-1、基站设备102接收第一用户设备101-1发送的源层2标识，以及，接收第二用户设备101-2发送的切换测量结果；其中，切换测量结果中包括所述第一用户设备的源层2标识。
S2-2、基站设备102根据源层2标识确定第一用户设备101-1为中继用户设备。
S2-3、基站设备102将切换所需配置信息发送至第一用户设备101-1。
S2-4、基站设备102向第二用户设备101-2发送切换命令；其中，切换命令用于指示切换至第一用户设备。
在一些可能的实施方式中，基站设备102根据第一用户设备101-1和第二用户设备101-2上报的信息，可以确定源层2标识所对应的中继用户设备(中继UE)。基站设备102将切换所需的配置信息发送至中继UE，以用于建立与第二用户设备101-2的链接。
在一些可能的实施方式中，切换测量结果中包括：多个第一用户设备101-1的源层2标识，以及第二用户设备101-2与多个第一用户设备101-1间的sidelink信道质量。基站设备102可以根据切换测量结果选取目标第一用户设备作为中继UE。
在一些可能的实施方式中，切换命令中可携带所选取的中继UE的相关信息，如源层2标识和相关配置。第二用户设备101-2在收到切换命令后，可通过基站设备102选取的中继UE与基站设备102连接。
采用此方法，基站设备根据第一用户设备上报的源层2标识，可识别到标识对应的第一用户设备，根据第二用户设备上报的切换测量结果可选取第一用户设备作为中继UE。在此基础上，基站设备在命令第二用户设备进行切换时，能够准确指示切换至第一用户设备，从而使第二用户设备成功切换至中继通信链路。
在一些可能的实施方式中，第一用户设备101-1具有中继功能。
在一些可能的实施方式中，所述第一用户设备101-1具有中继功能，以及，处于开启所述中继功能的状态。
在一些可能的实施方式中，所述处于开启所述中继功能的状态，包括以下中的至少一种：
发送中继发现信号；
接收中继发现信号。
在一些可能的实施方式中，所述第一用户设备101-1具有中继功能，以及，与所述基站设备之间的信道传输质量满足设定传输质量要求。
在一些可能的实施方式中，所述第一用户设备101-1的源层2标识包括：所述用户设备的至少一个源层2标识。
在一些可能的实施方式中，所述方法还包括：
所述第一用户设备101-1向所述基站设备发送至少一个源层2标识对应的业务类型，其中，所述业务类型是中继业务类型或者非中继业务类型。
在一些可能的实施方式中，所述第一用户设备101-1的源层2标识为：业务类型是中继业务类型的至少一个源层2标识。
在一些可能的实施方式中，所述方法还包括：
确定业务类型是中继业务类型的至少一个源层2标识。
在一些可能的实施方式中，响应于所述用户设备的源层2标识发生更改，向基站发送所述用户设备的更改后的源层2标识和/或指示信息；其中，所述指示信息用于指示更改前的源层2标识。
在一些可能的实施方式中，所述指示信息是源层2标识发生更改前向所述基站设备发送的包含至少一个所述源层2标识的源层2标识列表中的序号。
基于与以上方法实施例相同的构思，本公开实施例还提供一种通信装置，该通信装置可具备上述方法实施例中的用户设备101的功能，并用于执行上述实施例提供的由用户设备101执行的步骤。该功能可以通过硬件实现，也可以通过软件或者硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
在一种可能的实现方式中，如图5所示的通信装置500可作为上述方法实施例所涉及的用户设备101，并执行上述方法实施例中由用户设备101执行的步骤。如图5所示，该通信装置500可包括收发模块501。该收发模块501可用于支持通信装置500进行通信，收发模块502可具备无线通信功能，例如能够通过无线空口与其他通信装置进行无线通信。
在执行由用户设备101实施的步骤时，收发模块501，用于向基站设备发送所述用户设备的源层2标识；其中，所述通信装置是支持侧行链路通信的用户设备。
当该通信装置为用户设备101时，其结构还可如图6所示。装置600可以是移动电话，计算机，数字广播终端，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图6，装置600可以包括以下一个或多个组件：处理组件602，存储器604，电源组件606，多媒体组件608，音频组件610，输入/输出(I/O)的接口612，传感器组件614，以及通信组件616。
处理组件602通常控制装置600的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件602可以包括一个或多个处理器620来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件602可以包括一个或多个模块，便于处理组件602和其他组件之间的交互。例如，处理组件602可以包括多媒体模块，以方便多媒体组件608和处理组件602之间的交互。
存储器604被配置为存储各种类型的数据以支持在设备600的操作。这些数据的示例包括用于在装置600上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器604可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件606为装置600的各种组件提供电力。电源组件606可以包括电源管理系统，一个或多个电源，及其他与为装置600生成、管理和分配电力相关联的组件。
多媒体组件608包括在所述装置600和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动 作的边界，而且还检测与所述触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件608包括一个前置摄像头和/或后置摄像头。当设备600处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件610被配置为输出和/或输入音频信号。例如，音频组件610包括一个麦克风(MIC)，当装置600处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器604或经由通信组件616发送。在一些实施例中，音频组件610还包括一个扬声器，用于输出音频信号。
I/O接口612为处理组件602和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件614包括一个或多个传感器，用于为装置600提供各个方面的状态评估。例如，传感器组件614可以检测到设备600的打开/关闭状态，组件的相对定位，例如所述组件为装置600的显示器和小键盘，传感器组件614还可以检测装置600或装置600一个组件的位置改变，用户与装置600接触的存在或不存在，装置600方位或加速/减速和装置600的温度变化。传感器组件614可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件614还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件614还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件616被配置为便于装置600和其他设备之间有线或无线方式的通信。装置600可以接入基于通信标准的无线网络，如WiFi，4G或5G，或它们的组合。在一个示例性实施例中，通信组件616经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，所述通信组件616还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，装置600可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器604，上述指令可由装置600的处理器620执行以完成上述方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
基于与以上方法实施例相同的构思，本公开实施例还提供一种通信装置，该通信装置可具备上述方法实施例中的基站设备102的功能，并可用于执行上述方法实施例提供的由基站设备102执行的步骤。该功能可以通过硬件实现，也可以通过软件或者硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块。
在一种可能的实现方式中，如图7所示的通信装置700可作为上述方法实施例所涉及的基站设备102，并执行上述方法实施例中由基站设备102执行的步骤。如图7所示，该通信装置700可包括相互耦合的处理模块701以及收发模块702。该处理模块701可用于通信装置执行处理操作，如生成需要发送的信息/消息，或对接收的信号进行处理以得到信息/消息。收发模块702可用于支持通信装置700进行通信，收发模块702可具备无线通信功能，例如能够通过无线空口与其他通信装置进行无线通信。
在执行基站设备实施的步骤时，收发模块702用于接收第一用户设备发送的源层2标识，以及，接收第二用户设备发送的切换测量结果；其中，切换测量结果中包括第一用户设备的源层2标识。处理模块701用于根据所述源层2标识确定所述第一用户设备为中继用户设备。所述收发模块702，还用于将切换所需配置信息发送至所述第一用户设备；向所述第二用户设备发送切换命令；其中，所述切换命令用于指示切换至所述第一用户设备。
当该通信装置为网络设备时，其结构还可如图8所示。以基站设备102为例说明通信装置的结构。如图8所示，装置800包括存储器801、处理器802、收发组件803、电源组件806。其中，存储器801与处理器802耦合，可用于保存通信装置800实现各功能所必要的程序和数据。该处理器802被配置为支持通信装置800执行上述方法中相应的功能，所述功能可通过调用存储器801存储的程序实现。收发组件803可以是无线收发器，可用于支持通信装置800通过无线空口进行接收信令和/或数据，以及发送信令和/或数据。收发组件803也可被称为收发单元或通信单元，收发组件803可包括射频组件804以及一个或多个天线805，其中，射频组件804可以是远端射频单元(remote radio unit，RRU)，具体可用于射频信号的传输以及射频信号与基带信号的转换，该一个或多个天线805具体可用于进行射频信号的辐射和接收。
当通信装置800需要发送数据时，处理器802可对待发送的数据进行基带处理后，输出基带信号至射频单元，射频单元将基带信号进行射频处理后将射频信号通过天线以电磁波的形式进行发送。当有数据发送到通信装置800时，射频单元通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器802，处理器802将基带信号转换为数据并对该数据进行处理。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开实施例的其它实施方案。本申请旨在涵盖本公开实施例的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开实施例的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开实施例的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开实施例并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开实施例的范围仅由所附的权利要求来限制。
工业实用性
用于侧行链路sidelink通信的用户设备主动向基站上报源层2标识。基站设备根据第一用户设备上报的源层2标识，可识别到标识对应的第一用户设备；结合第二用户设备上报的切换测量结果，基站设备能够确定第一用户设备作为中继UE。从而基站设备命令第二用户设备进行切换时，能够准确指示切换至第一用户设备，从而使第二用户设备成功切换至中继UE通信链路。

Claims (18)

  1. 一种发送切换辅助信息的方法，应用于用户设备，其中，包括：
    用于侧行链路sidelink通信的所述用户设备向基站设备发送所述用户设备的源层2标识。
  2. 如权利要求1所述的方法，其中，所述用户设备具有中继功能。
  3. 如权利要求1所述的方法，其中，所述用户设备具有中继功能，以及，处于开启所述中继功能的状态。
  4. 如权利要求3所述的方法，其中，
    所述处于开启所述中继功能的状态，包括以下中的至少一种：
    发送中继发现信号；
    接收中继发现信号。
  5. 如权利要求1所述的方法，其中，所述用户设备具有中继功能，以及，与所述基站设备之间的信道传输质量满足设定传输质量要求。
  6. 如权利要求1所述的方法，其中，
    所述用户设备的源层2标识包括：所述用户设备的至少一个源层2标识。
  7. 如权利要求6所述的方法，其中，
    所述方法还包括：
    所述用户设备向所述基站设备发送至少一个源层2标识对应的业务类型，其中，所述业务类型是中继业务类型或者非中继业务类型。
  8. 如权利要求1所述的方法，其中，
    所述用户设备的源层2标识为：业务类型是中继业务类型的至少一个源层2标识。
  9. 如权利要求8所述的方法，其中，
    所述方法还包括：
    确定业务类型是中继业务类型的至少一个源层2标识。
  10. 如权利要求1所述的方法，其中，
    响应于所述用户设备的源层2标识发生更改，向基站发送所述用户设备的更改后的源 层2标识和/或指示信息；其中，所述指示信息用于指示更改前的源层2标识。
  11. 如权利要求10所述的方法，其中，
    所述指示信息是源层2标识发生更改前向所述基站设备发送的包含至少一个所述源层2标识的源层2标识列表中的序号。
  12. 一种切换方法，应用于基站设备，其中，包括：
    接收第一用户设备发送的源层2标识，以及，接收第二用户设备发送的切换测量结果；其中，切换测量结果中包括所述第一用户设备的源层2标识；
    根据所述源层2标识确定所述第一用户设备为中继用户设备；
    向所述第一用户设备发送切换所需配置信息；
    向所述第二用户设备发送切换命令；其中，所述切换命令用于指示切换至所述第一用户设备。
  13. 一种通信装置，包括：
    收发模块，向基站设备发送用于侧行链路sidelink通信的通信装置的源层2标识。
  14. 一种通信装置，包括：
    收发模块，用于接收第一用户设备发送的源层2标识，以及，接收第二用户设备发送的切换测量结果；其中，切换测量结果中包括所述第一用户设备的源层2标识；
    处理模块，用于根据所述源层2标识确定所述第一用户设备为中继用户设备；
    所述收发模块，还用于向所述第一用户设备发送切换所需配置信息；向所述第二用户设备发送切换命令；其中，所述切换命令用于指示切换至所述第一用户设备。
  15. 一种通信装置，包括处理器以及存储器；
    所述存储器用于存储计算机程序；
    所述处理器用于执行所述计算机程序，以实现如权利要求1-11中任一项所述的方法。
  16. 一种通信装置，包括处理器以及存储器；
    所述存储器用于存储计算机程序；
    所述处理器用于执行所述计算机程序，以实现如权利要求12中任一项所述的方法。
  17. 一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当所述指令在计算机上被调用执行时，使得所述计算机执行如权利要求1-11中任一项所述的方法。
  18. 一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当所述指令在计算机上被调用执行时，使得所述计算机执行如权利要求12中任一项所述的方法。
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