WO2023088367A1 - 数据传输方法、远端ue、中继ue及存储介质 - Google Patents

数据传输方法、远端ue、中继ue及存储介质 Download PDF

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Publication number
WO2023088367A1
WO2023088367A1 PCT/CN2022/132574 CN2022132574W WO2023088367A1 WO 2023088367 A1 WO2023088367 A1 WO 2023088367A1 CN 2022132574 W CN2022132574 W CN 2022132574W WO 2023088367 A1 WO2023088367 A1 WO 2023088367A1
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WIPO (PCT)
Prior art keywords
relay
channel quality
remote
link
connection
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PCT/CN2022/132574
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English (en)
French (fr)
Inventor
张明珠
彦楠
严雪
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大唐移动通信设备有限公司
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Publication of WO2023088367A1 publication Critical patent/WO2023088367A1/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
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Definitions

  • the present application relates to the technical field of communication, and specifically, the present application relates to a data transmission method, a remote UE, a relay UE, and a storage medium.
  • the remote UE (User Equipment, User Equipment) needs to discover the relay UE when certain conditions are met, and select the relay UE according to the relay selection criteria. After establishing a PC5 connection with the relay UE, if The current quality of PC5 is poor, and the relay UE is reselected according to the relay reselection criterion, so as to ensure the connection to the relay UE with better quality.
  • the remote UE selects the relay UE, it may be because the relay selection criterion or relay reselection criterion configured on the network side is not suitable, or because the relay UE cannot provide a good The remote UE reselects the relay UE frequently.
  • a data transmission method is provided, which is applied to a remote UE, and the method includes: determining first measurement information when triggering discovery, selection, and/or reselection of a relay UE; reporting the first measurement information to Internet equipment.
  • the first measurement information includes one or more of channel quality related information, terminal device related information, connection duration related information, and a reason for triggering reselection of the relay UE.
  • the channel quality related information includes one or more of the following: the Uu link channel quality of the remote UE; the first PC5 between the remote UE and the selected relay UE Link channel quality; the second PC5 link channel quality between the remote UE and the relay UE connected when reselection is triggered; the third PC5 link between the remote UE and the reselected relay UE channel quality; the configured first channel quality threshold for triggering discovery; the configured second channel quality threshold for selecting/reselecting the relay UE; the configured third channel quality threshold for triggering reselecting the relay UE; the first channel quality The difference between the threshold and the Uu link channel quality; the difference between the second channel quality threshold and the first PC5 link channel quality or the third PC5 link channel; the third channel quality threshold The difference between the channel quality of the second PC5 link or the channel quality of the third PC5 link; the channel quality of the Uu link of the selected relay UE; the channel quality of the Uu link of the reselected relay UE.
  • the terminal device related information includes one or more of the following: identification information and/or location information of the selected relay UE; identification information and/or location information of the reselected relay UE; The identification information and location information of the remote UE.
  • the connection duration related information includes one or more of the following: the duration of the PC5 connection between the remote UE and the selected relay UE; The duration of the PC5 connection.
  • the reasons for triggering the reselection of the relay UE include one or more of the following: the channel quality of the PC5 link with the relay UE that has established a connection is lower than the second channel quality threshold; The PC5 connection with the currently connected relay UE is released by the high-level instructions; when it is detected that the radio link failure RLF occurs during the current PC5 connection process; it is indicated by the high-level.
  • the data transmission method further includes: when the remote UE switches from the PC5 connection to the Uu connection, stop determining the first measurement information.
  • a data transmission method which is applied to a relay UE, and the method includes: determining trigger discovery, performing a PC5 connection with a remote UE, PC5 RLF and/or second measurement information when Uu RLF occurs; Report the second measurement information to a network device.
  • the second measurement information includes one or more of channel quality related information, terminal device related information, and RLF related information.
  • the channel quality related information includes one or more of the following: the Uu link channel quality of the relay UE when the discovery is triggered; the PC5 link channel with the remote UE when the PC5 connection is established Quality: the fourth channel quality threshold and the fifth channel quality threshold configured by the network side when triggering discovery, the fourth channel quality threshold is lower than the fifth channel quality threshold; the number of remote UEs connected at the same time is the lowest The first average PC5 link channel quality when the number is the highest; the second average PC5 link channel quality when the number of simultaneously connected remote UEs is the highest.
  • the terminal device related information includes one or more of the following: the minimum number of simultaneously connected remote UEs; the highest number of simultaneously connected remote UEs.
  • the RLF-related information includes one or more of the following: the number of times Uu RLF occurs; the location information of the relay UE when Uu RLF occurs, the PC5 link channel quality with the remote UE, the Uu One or more of the link channel quality, the number of remote UEs connected at the same time, identification information, and the duration of the PC5 connection between the relay UE and the remote UE; the number of times PC5RLF occurs; the location of the relay UE when PC5RLF occurs One or more of information, PC5 link channel quality with the remote UE, Uu link channel quality, number of remote UEs connected at the same time, identification information, and the duration of the PC5 connection between the remote UE and the relay UE Various.
  • the data transmission method further includes: receiving a report request sent by a remote UE, and reporting one or more of the location information of the relay UE and the channel quality of the Uu link to the remote UE kind.
  • the embodiment of the present application further provides a remote UE, including: a first measurement information determination module, configured to determine the first measurement information when triggering the discovery, selection, and/or reselection of the relay UE; the first measurement information A reporting module, configured to report the first measurement information to the network.
  • a first measurement information determination module configured to determine the first measurement information when triggering the discovery, selection, and/or reselection of the relay UE
  • the first measurement information A reporting module configured to report the first measurement information to the network.
  • the embodiment of the present application further provides a relay UE, including: a second measurement information determination module, configured to determine the first measurement information when triggering discovery, performing a PC5 connection with a remote UE, PC5 RLF and/or Uu RLF occurs.
  • a second measurement information reporting module configured to report the second measurement information to the network device.
  • the embodiment of the present application further provides a UE, including a memory, a transceiver, and a processor.
  • the memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and execute the steps of the data transmission method as described in the first or second aspect .
  • the embodiment of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and operable on the processor.
  • the processor executes the program, the implementation is as provided in the first or second aspect. steps of the method.
  • the embodiment of the present application provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method provided in the first or second aspect are implemented.
  • the embodiment of the present application provides a computer program product, the computer program product includes computer instructions, the computer instructions are stored in a computer-readable storage medium, when the processor of the computer device reads the computer-readable storage medium from the computer-readable storage medium A computer instruction, the processor executes the computer instruction, so that the computer device executes the steps for implementing the method provided in the first or second aspect.
  • FIG. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application.
  • FIG. 2 is a schematic flow diagram of a data transmission method according to an embodiment of the present application.
  • FIG. 3 is a schematic flow diagram of a data transmission method according to another embodiment of the present application.
  • FIG. 4 is an interactive schematic diagram of a remote UE selecting and reselecting a relay UE according to an embodiment of the present application
  • FIG. 5 is a schematic diagram of a range of channel quality thresholds that can be used as a relay UE set by the network side in an embodiment of the present application;
  • FIG. 6 is a schematic diagram of interaction of a relay UE during data transmission according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a remote UE according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a relay UE according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a UE provided in an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • the discovery condition may be: the relay UE can be closer to the edge of the cell, so that the relay service can be provided for more out-of-coverage UEs (hereinafter called remote UEs).
  • remote UEs By setting a high threshold (that is, the Uu link channel quality of the relay UE must not exceed the high threshold), the current relay UE is limited not to be too close to the center of the cell.
  • a low threshold that is, the channel quality of the Uu link of the relay UE must not be lower than this low threshold). threshold
  • the remote UE only when the Uu channel quality of the relay UE (relay UE) is between a low threshold and a high threshold, it is possible to provide the required relay service.
  • the Remote UE For the Remote UE (remote UE), only one threshold is used to judge the trigger.
  • the link channel quality of the remote UE's current Uu where U stands for User to Network interface, and u stands for general, that is, Uu refers to the general use of the user network interface
  • the remote UE can be triggered discovery operation, so as to discover the relay UE providing the relay service for it.
  • the selection condition for the remote UE to trigger the relay UE may be as follows: 1) The quality of the Uu channel directly connected to the current serving cell of the UE is lower than the configured signal strength threshold; or, 2) Instructed by a high layer.
  • the conditions for the remote UE to trigger the reselection of the relay UE can be as follows: 1) The channel quality of the PC5 link with the currently connected U2N relay UE is lower than the (pre)configured signal strength threshold; 2) The current connection with the U2N relay UE The connection between PC5 is released by high-level instructions (for example, when the relay UE detects a radio link failure (Radio link failure, RLF) on the Uu interface, or when the relay UE performs handover to other base stations); 3) when the U2N When the remote UE detects that RLF occurs on the current PC5 port; or, 4) Instructed by a high layer.
  • RLF radio link failure
  • the criteria for the remote UE to select/reselect the relay UE may be as follows:
  • the remote UE compares the channel quality of the PC5 wireless link of the relay UE with the signal strength threshold configured on the network side, and if the channel quality of the PC5 wireless link with the relay UE is higher than the signal strength threshold configured on the network side, select the relay UE. If the channel quality of the PC5 radio link with multiple relay UEs is higher than the signal strength threshold configured by the network side, the remote UE selects one relay UE among the multiple relay UEs.
  • the remote UE may frequently reselect the relay UE due to inappropriate relay selection criteria (and/or inappropriate relay reselection criteria) configured on the network side, Or it may be because the relay UE cannot provide good service when acting as a relay (for example, the channel quality of the Uu link is poor or the channel quality of the PC5 wireless link is poor), which causes the remote UE to reselect the relay frequently.
  • inappropriate relay selection criteria and/or inappropriate relay reselection criteria
  • the relay UE cannot provide good service when acting as a relay (for example, the channel quality of the Uu link is poor or the channel quality of the PC5 wireless link is poor), which causes the remote UE to reselect the relay frequently.
  • the data transmission method provided by the present application can at least solve the above technical problems in the prior art.
  • Fig. 1 exemplarily shows a schematic architecture diagram of a communication system according to an embodiment of the present application.
  • a communication system may include at least one base station and at least one user equipment.
  • the base station provided in the embodiment of the present application may be a base station (Node B, NB) under the Universal Mobile Telecommunications System (Universal Mobile Telecommunications System, UMTS), an evolved base station (eNodeB, eNB) under the Long Term Evolution (Long Term Evolution, LTE) ) or a base station or controller under the fifth generation mobile communication system.
  • Node B, NB Universal Mobile Telecommunications System
  • eNodeB, eNB evolved base station
  • LTE Long Term Evolution
  • the user equipment (also referred to as terminal equipment) involved in this embodiment of the present application may be a device that provides voice and/or data connectivity to users, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem.
  • the name of the terminal equipment may be different.
  • the terminal equipment may be called User Equipment (User Equipment, UE).
  • the wireless terminal device can communicate with one or more core networks (Core Network, CN) via a radio access network (Radio Access Network, RAN).
  • Core Network Core Network
  • RAN Radio Access Network
  • Wireless terminal equipment can be mobile terminal equipment (such as mobile phones (or called “cellular” phones)) and computers with mobile terminal equipment (such as portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices) ), which exchange language and/or data with the radio access network.
  • the wireless terminal equipment can be a personal communication service (Personal Communication Service, PCS) phone, a cordless phone, a session initiation protocol (Session Initiated Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) and other equipment.
  • PCS Personal Communication Service
  • SIP Session Initiated Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • Wireless terminal equipment can also be called system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), user device (user device), etc., are not limited in this embodiment of the application.
  • the applicable system may be global system of mobile communication (GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal Packet radio service (general packet radio service, GPRS) system, 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 , long term evolution advanced (LTE-A) system, universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G New Radio (New Radio) , NR) system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS general packet radio service
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • FDD frequency division duplex
  • TDD time division duplex
  • LTE-A long term evolution advanced
  • Fig. 2 exemplarily shows a schematic flowchart of a data transmission method according to an embodiment of the present application.
  • the data transmission method is applied to a remote UE.
  • the data transmission method may include steps S101 and S102.
  • step S101 first measurement information when triggering discovery, selection and/or reselection of a relay UE is determined.
  • the embodiment of the present application is not limited to determining the first measurement information when triggering discovery, selection and/or reselection of the relay UE, and may store (or record) the first measurement information when triggering discovery, selection and/or reselection information.
  • the first measurement information to be reported may be determined according to the stored first measurement information.
  • step S102 the first measurement information is reported to the network device.
  • the remote UE determines the first measurement result when triggering the discovery, selection and/or reselection of the relay UE, and reports it to the network side, which can be used by the network side to optimize the selection and selection of the configured relay UE. Reselection information, avoiding the problem of frequent switching when the remote UE chooses to use the relay UE due to inappropriate relay selection criteria and/or inappropriate relay reselection criteria configured on the network side, thereby improving the remote UE's selection of relays The correctness of the UE improves the system performance.
  • the first measurement information includes one or more of channel quality related information, terminal device related information, connection duration related information, and reasons for triggering reselection of the relay UE.
  • the channel quality related information includes one or more of the following 1) to 12).
  • the condition for triggering the discovery is that the Uu link channel quality of the remote UE is lower than the configured first Uu link measurement threshold
  • recording this information can be used by the network side to judge whether the first Uu link measurement threshold needs to be adjusted based on the information. For example, if the network side determines that there are a large number of remote UEs in the network at this time, or the remote UEs are not close to the edge of the cell, or the remote UEs frequently trigger discovery and the channel quality of the Uu link is slightly lower than The first Uu link measurement threshold, then the first Uu link measurement threshold can be lowered.
  • a Uu link may refer to a link based on a Uu interface.
  • this information can help the network side better understand the preference of the remote UE to select the relay UE and the PC5 link channel quality when establishing the PC5 connection.
  • the network side can know the change of the PC5 link channel quality during a PC5 connection, and when frequent reselection occurs, it can Find out the rules of the situation, optimize the Uu link threshold, the PC5 link channel quality threshold, and so on.
  • this information can help the network side better understand the preference of the remote UE to reselect the relay UE and the communication quality of the PC5 link when the PC5 connection is initially established. Combined with the PC5 link channel quality of the currently connected relay UE when reselection is triggered, the network side can better understand the changes in the PC5 link channel quality during a PC5 connection, and when frequent reselections occur, it can Find out the rules, optimize the Uu link threshold, PC5 link channel quality threshold, etc.
  • the configured third channel quality threshold for triggering reselection of the relay UE may be a threshold set for the PC5 link channel quality; the second channel quality threshold may be the same as the third channel quality threshold,
  • the embodiments of the present application do not make specific limitations.
  • the terminal device related information includes one or more of the following: 1) identification information and/or location information of the selected relay UE; 2) identification information and/or location information of the reselected relay UE; 3) remote UE identification and location information.
  • the connection duration-related information includes one or more of the following: 1) the duration of the PC5 connection between the remote UE and the selected relay UE; 2) the duration of the PC5 connection between the remote UE and the reselected relay UE.
  • the reasons for triggering the reselection of the relay UE include one or more of the following: 1) the channel quality of the PC5 link with the relay UE that has established a connection is lower than the second channel quality threshold; 2) the relay UE with the current connection
  • the PC5 connection between UEs is released by high-level instructions; 3) when it is detected that a radio link failure RLF occurs during the current PC5 connection; 4) by high-level instructions.
  • the remote UE when the remote UE switches from the PC5 connection to the Uu connection, it stops recording the first measurement result.
  • the remote UE can measure/obtain relevant information generated during the execution process in real time or as required. Such information can be called is the first measurement information.
  • Fig. 3 exemplarily shows a schematic flowchart of a data transmission method according to another embodiment of the present application.
  • the data transmission method is applied to a relay UE.
  • the data transmission method may include steps S201 and S202.
  • step S201 determine the second measurement information when discovery is triggered, PC5 connection is made with a remote UE, PC5 RLF and/or Uu RLF occurs.
  • step S202 report the second measurement information to the network device.
  • the second measurement information may include one or more of channel quality related information, UE related information, and RLF related information.
  • the channel quality related information may include one or more of the following:
  • the average PC5 link channel quality is obtained by dividing the sum of PC5 link channel qualities of simultaneously connected remote UEs by the number of simultaneously connected remote UEs. Specifically, the first average PC5 link channel quality is obtained by dividing the combination of the PC5 link channel qualities of the minimum number of remote UEs simultaneously connected by the minimum number. The second average PC5 link channel quality is obtained by dividing the PC5 link channel quality of the highest number of remote UEs simultaneously connected by the highest number.
  • the UE-related information includes one or more of the following: 1) the minimum number of simultaneously connected remote UEs; 2) the highest number of simultaneously connected remote UEs quantity.
  • the RLF-related information includes one or more of the following:
  • PC5RLF occurs, the location information of the relay UE, the channel quality of the PC5 link with the remote UE, the channel quality of the Uu link, the number of simultaneously connected remote UEs, identification information, and the distance between the remote UE and the relay UE One or more of the duration of the PC5 connection.
  • the data transmission method further includes: receiving a report request sent by the remote UE, and reporting the location information of the relay UE and the channel quality of the Uu link to the remote UE. one or more of.
  • the remote UE wants to report the location information of the selected relay UE and/or the channel quality of the Uu link to the network side, it needs to request the selected relay UE to report the location information and/or channel quality of the relay UE in advance. or Uu link channel quality, to indicate that the selected relay UE sends location information and/or Uu link channel quality to the remote UE.
  • the remote UE wants to report the location information of the reselected relay UE and/or the channel quality of the Uu link to the network side, it needs to request the reselected relay UE to report the location information and the channel quality of the relay UE in advance. and/or Uu link channel quality, to indicate that the reselected relay UE sends location information and/or Uu link channel quality to the remote UE.
  • FIG. 4 exemplarily shows an interaction schematic diagram of a remote UE selecting and reselecting a relay UE according to an embodiment of the present application.
  • the interaction of the remote UE selecting and reselecting the relay UE may include the following 1-5.
  • the discovery is triggered.
  • the threshold configured to trigger the discovery process for example, the first channel quality threshold
  • the discovery is triggered.
  • other relay UEs can discover that there is a remote UE that needs to perform PC5 connection at this time.
  • the Uu link quality measured by the relay UE is within the range of the high threshold and the low threshold (for example, the fourth channel quality threshold and the fifth channel quality threshold)
  • discovery is performed.
  • the relay UE performs discovery other remote UEs can discover that there is a relay UE that can perform PC5 connection at this time.
  • the information recorded by the remote UE may include: the Uu link channel quality of the remote UE, the threshold configured to trigger the discovery process (the first channel quality threshold), and the indication information indicating that the quality of the Uu link is less than the threshold configured to trigger the discovery process and the difference between the two.
  • the remote UE selects the relay UE according to the channel quality of the PC5 link with the relay UE (there may be one or more relay UEs, and the quality of the PC5 link channel is represented by SD-RSRP). For example, the remote UE measures the channel quality of the PC5 link with the relay UE1, and the measured channel quality of the PC5 link with the relay UE1 at T1 is higher than the configured selection threshold (second channel quality threshold), then The relay UE1 may be selected to establish a PC5 connection.
  • the configured selection threshold second channel quality threshold
  • the information recorded by the remote UE may include: the PC5 link channel quality (SD-RSRP) of the remote UE at the time of discovery, the PC5 link channel quality between the remote UE and the selected relay UE1, and the configured second Channel quality threshold, the comparison result and difference between the PC5 link channel quality between the remote UE and the selected relay UE1 and the second channel quality threshold, the comparison difference, the Uu link channel quality of the relay UE1, and the identity of the relay UE1 information, location information, etc.
  • SD-RSRP PC5 link channel quality
  • the remote UE measures and obtains that the channel quality of the PC5 link with the relay UE1 is lower than the third channel quality threshold, then triggers the relay UE to reselect at T2, and reselects to the relay UE2 at T3.
  • the second channel quality threshold and the third channel quality threshold may be configured as the same threshold, or may be different.
  • the information recorded by the remote UE may include: the channel quality of the PC5 link between the remote UE and the relay UE1 when reselection is triggered, the configured third channel quality threshold and the difference between the two, the remote The PC5 connection duration (T2-T1) between the UE and the relay UE1, and the reason for triggering reselection: the channel quality of the PC5 link between the remote UE and the relay UE1 is lower than the configured third channel threshold; the remote UE and the relay UE1 The channel quality of the PC5 link between the reselected relay UE2, the configured third channel quality threshold and the difference between them, the Uu link quality, identification information, location information, etc. of the relay UE2.
  • the remote UE measures and obtains that the channel quality of the PC5 link with the relay UE2 is lower than the third channel quality threshold, then triggers the reselection of the relay UE at T4, and reselects to the relay UE3 at T5.
  • the information recorded by the remote UE may include: the channel quality of the PC5 link between the remote UE and the relay UE2 when the remote UE triggers reselection, the configured third channel quality threshold and the difference between the two.
  • the connection duration (T4-T3) between the UE and the PC5 of the relay UE2, the connection duration (T2-T1) of the PC5 of the UE1 and the relay, and the reason for triggering reselection is that the quality of the link with the PC5 currently connected to the relay UE is lower than the configuration
  • the remote UE After the remote UE enters the connection state or switches to the direct link, it can send the indication information that the first measurement result is valid to the network side, and report the above records after the network side requests to report the quality of the relay UE selection/reselection channel Content.
  • FIG. 5 shows a schematic diagram of a range of channel quality thresholds that can be used as relay UEs set by the network side.
  • a high threshold and a low threshold are configured on the network side, the high threshold corresponds to circle A in Figure 5, and the low threshold corresponds to circle B in the figure.
  • the channel quality of the Uu link of the UE is between the high and low thresholds, it can be used as a relay UE, that is, the UEs located in circle A and circle B can serve as a relay UE.
  • the network side also configures a threshold C (not shown in FIG. 5 ), so that when the channel quality of the Uu link of the UE is lower than the threshold C, the UE can act as a remote UE. If the measured channel quality of the PC5 link between the remote UE and the relay UE is higher than the threshold D (not shown in FIG. 5 ), the relay UE may be selected and communicated with the base station through the relay UE.
  • the base station side After the base station side receives the channel quality of the remote UE in the embodiment shown in Figure 4, it detects that the reason for triggering reselection reported by the remote UE is the PC5 link between the remote UE and the connected relay UE.
  • the channel quality is lower than the configured second channel quality threshold, and the following reasons can be obtained: because the channel quality thresholds corresponding to circle A and circle B configured on the network side are unreasonable, the UE cannot select a suitable relay UE, so that the far The terminal UE has been reselecting; or the threshold D for the remote UE to select the relay UE is unreasonably configured.
  • the network side can lower the threshold corresponding to circle A (the fifth channel quality threshold), or lower the threshold value of D ( The second channel quality threshold) or the third channel quality threshold is increased to optimize the quality of the remote UE selecting the relay UE.
  • Lowering the threshold corresponding to circle A is equivalent to expanding circle A outward.
  • the remote UE will not select a relay UE that is too close to the network side, and the channel quality of the PC5 link of the relay UE selected by the remote UE will not be high. Too close to configure threshold D.
  • Increasing the D threshold is equivalent to increasing the threshold for the remote UE to select the relay UE, so that the remote UE will not select the relay UE that is too close to the circle A.
  • FIG. 6 exemplarily shows a schematic diagram of interaction of a relay UE during data transmission according to an embodiment of the present application.
  • the relay UE can report some measurement information of itself when acting as a relay, to help the network side know the network status of the relay UE when acting as a relay.
  • the measurement information may be how many remote UEs are connected, the PC5 link channel quality of each remote UE or the duration of the connection, and whether the PC5 connection fails due to the poor Uu link channel quality, thus It is for the network side to more accurately judge whether the criterion for selecting and reselecting the relay UE is appropriate, that is, the criterion for whether a certain UE can act as the relay UE.
  • the relay UE When the relay UE measures that the quality of the Uu link is between the fourth channel quality threshold and the fifth channel quality threshold, discovery is triggered. After triggering the discovery, the relay UE can make its remote UE discover that there is a relay UE that can connect to PC5 at this time, and can act as a relay UE after successfully connecting with the remote UE. At this time, the information recorded by the relay UE may include: the Uu link quality of the relay UE, the fourth channel quality threshold and the fifth channel quality threshold configured to trigger the discovery process.
  • the remote UE1/2/3/4 respectively establish a PC5 connection with the relay UE.
  • the information recorded by the relay UE may include: the PC5 link channel quality (SL-RSRP) between the relay UE and the remote UE1/2/3/4, and the identification information of the remote UE, where the remote UE There is a one-to-one correspondence between the identification and the channel quality of the PC5 link between the relay UE and the remote UE.
  • SL-RSRP PC5 link channel quality
  • PC5RLF occurs between the relay UE and the remote UE2, record the PC5RLF once, and record the PC5 link channel quality between the relay UE and the remote UE at each PC5RLF, the Uu link channel quality, and the connection time when PC5RLF occurs.
  • Uu RLF occurs in the relay UE, it will disconnect PC5 connection with all remote UE1/3/4, and record Uu RLF once. At this time, the channel quality and Uu Link channel quality, identification information of the remote UE1/3/4 connected when Uu RLF occurs, and the duration of the PC5 connection between the relay UE and the remote UE1/3/4.
  • the relay UE is successfully rebuilt.
  • the relay UE and the remote UE5/6 are established.
  • PC5 is connected, if Uu RLF occurs subsequently, Uu RLF will be recorded twice (update the number of Uu RLF recorded before), at this time, the channel quality of PC5 link and Uu link channel quality between the remote UE 5/6, Uu RLF will occur.
  • the relay UE will include the indication information of the relay UE selection/reselection process related information in the RRC Reestablishment Complete message.
  • the network side requests to report the measurement information of the relay UE, it will report the above recorded content.
  • the network side After the network side receives the information reported by the relay UE, it detects that the relay UE has two Uu RLFs in the process of acting as a relay UE, one PC5RLF, and six remote UEs.
  • the terminal UE has established a PC5 connection, 5 remote UEs (including remote UE1/3/4/5/6) are disconnected due to Uu RLF, and 1 remote UE (including remote UE2) is due to PC5RLF occurs.
  • the network side After receiving the information reported by the relay UE, the network side detects that the relay UE always disconnects the PC5 connection with the remote UE due to Uu RLF, and judges the PC5 link channel quality and Uu channel quality reported by the relay UE Is it because the B ring is too far away or the A ring is far away.
  • the network side can increase the threshold value B to be closer to the network side; if the location of the relay UE is far from the network side, it is judged that the configuration of circle A is inappropriate, and the threshold value A can be increased to be closer to the network side. The network side is closer.
  • the remote UE can perform a dedicated signaling (such as RRC Setup Complete/RRC Reconfiguration Complete/RRC Reestablishment Complete/RRC Resume Complete ) to report effective relay UE selection/reselection process related information indication information.
  • a dedicated signaling such as RRC Setup Complete/RRC Reconfiguration Complete/RRC Reestablishment Complete/RRC Resume Complete
  • the network side requests the UE to report the relevant information of the target process in dedicated signaling (such as RRC Reconfiguration/UE Information Request).
  • the UE then reports and records related information in dedicated signaling (such as UE Information Response).
  • dedicated signaling such as UE Information Response
  • the embodiment of the present application provides a remote UE.
  • the remote UE may include: a first measurement information determining module 701 and a first measurement information reporting module 702 .
  • the first measurement information determining module 701 is configured to determine first measurement information when triggering discovery, selection and/or reselection of a relay UE.
  • the first measurement information reporting module 702 is configured to report the first measurement information to the network.
  • the first measurement information determining module 702 is further configured to: stop determining the first measurement information when the remote UE switches from the PC5 connection to the Uu connection.
  • the remote UE provided in the embodiment of the present application can specifically execute the above-mentioned embodiment process of the data transmission method applied to the remote UE. For details, please refer to the content of the above-mentioned data transmission method embodiment, which will not be repeated here.
  • the remote UE provided in the embodiment of the present application determines the first measurement result when triggering the discovery, selection and/or reselection of the relay UE, and reports it to the network side, so that the network side can optimize the selection and selection of the configured relay UE.
  • Reselection information avoiding the problem of frequent switching when the remote UE chooses to use the relay UE due to inappropriate relay selection criteria and/or inappropriate relay reselection criteria configured on the network side, thereby improving the remote UE's selection of relays
  • the correctness of the UE improves the system performance.
  • the relay UE may include: a second measurement information determining module 801 and a second measurement information reporting module 802 .
  • the second measurement information determining module 801 is configured to determine the second measurement information when discovery is triggered, PC5 connection with remote UE occurs, PC5 RLF and/or Uu RLF occurs.
  • the second measurement information reporting module 802 is configured to report the second measurement information to the network device.
  • the second measurement information reporting module 802 is further configured to receive a report request sent by the remote UE, and report one or more of the location information of the relay UE and the channel quality of the Uu link to the remote UE.
  • the relay UE provided in the embodiment of the present application specifically executes the flow of the embodiment of the above-mentioned data transmission method applied to the relay UE.
  • the relay UE provided in the embodiment of the present application can be provided by determining the second measurement information when triggering discovery, PC5 connection with the remote UE, PC5 RLF and/or Uu RLF occurs, and reporting the second measurement result to the network device.
  • the network side optimizes the configured relay UE selection and reselection information to avoid frequent switching when the remote UE chooses to use the relay UE due to inappropriate relay selection criteria and relay reselection criteria configured on the network side problem, thereby improving the correctness of the remote UE in selecting the relay UE, and improving system performance.
  • the embodiment of the present application also provides a UE, including a memory 901 , a transceiver 902 and a processor 903 .
  • the memory 901 is used to store computer programs.
  • the transceiver 902 is used to receive and transmit data under the control of the processor 903 .
  • the processor 903 is configured to read a computer program in the memory 901 and perform the following operations: determine first measurement information when triggering discovery, selection and/or reselection of a relay UE; report the first measurement information to a network device.
  • the processor 903 is further configured to perform the following operation: when the remote UE switches from the PC5 connection to the Uu connection, stop determining the first measurement information.
  • the processor 903 is configured to read the computer program in the memory 901 and perform the following operations: determine the second measurement information when triggering discovery, performing PC5 connection with the remote UE, PC5 RLF and/or Uu RLF occurs; report the second Measurement information to network devices.
  • the processor 903 is further configured to perform the following operations: receive a report request sent by the remote UE, and report one or more of the location information of the relay UE and the channel quality of the Uu link to the remote UE.
  • the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors 903 represented by processor 903 and various circuits of memory 901 represented by memory 901 are linked together.
  • the bus architecture can also link together various other circuits such as peripheral devices, voltage regulators and power management circuits, etc., which are well known in the art, so the embodiments of this application will not further describe them .
  • Bus interface 904 provides the interface.
  • Transceiver 902 may be a plurality of elements, including a transmitter and a receiver, providing a means for communicating with various other devices over transmission media. These transmission media include transmission media such as wireless channels, wired channels, and optical cables.
  • Processor 903 is responsible for managing the bus architecture and general processing.
  • the memory 901 may store data used by the processor 903 when performing operations.
  • the processor 903 can be a central processing device (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device , CPLD), the processor 903 may also adopt a multi-core architecture.
  • CPU central processing device
  • ASIC Application Specific Integrated Circuit
  • FPGA field programmable gate array
  • CPLD Complex Programmable Logic Device
  • the processor 903 is configured to execute any data transmission method provided in the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory 901 .
  • the processor 903 and the memory 901 may also be arranged physically separately.
  • An embodiment of the present application provides an electronic device, the electronic device includes: a memory and a processor; at least one program stored in the memory for execution by the processor, compared with the prior art, it can be realized: by determining Trigger the first measurement information when the relay UE is discovered, selected and/or reselected and reported to the network side, which can be used by the network side to optimize the configured relay UE selection and reselection information, and avoid relay selection due to network side configuration. Inappropriate criteria and/or inappropriate relay reselection criteria lead to frequent switching when the remote UE chooses to use the relay UE, thereby improving the correctness of the remote UE in selecting the relay UE and improving system performance.
  • the electronic device 1000 shown in FIG. 10 includes: a processor 1001 and a memory 1003 .
  • the processor 1001 is connected to the memory 1003 , such as through a bus 1002 .
  • the electronic device 1000 may further include a transceiver 1004 . It should be noted that, in practical applications, the transceiver 1004 is not limited to one.
  • the structure of the electronic device 1000 does not limit the embodiment of the present application.
  • Processor 1001 can be CPU (Central Processing Unit, central processing unit), general purpose processor, DSP (Digital Signal Processor, data signal processor), ASIC (Application Specific Integrated Circuit, application specific integrated circuit), FPGA (Field-Programmable Gate Array, Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor 1001 may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of DSP and a microprocessor, and the like.
  • Bus 1002 may include a path for communicating information between the components described above.
  • the bus 1002 may be a PCI (Peripheral Component Interconnect, Peripheral Component Interconnect Standard) bus or an EISA (Extended Industry Standard Architecture, Extended Industry Standard Architecture) bus, etc.
  • the bus 1002 can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 10 , but it does not mean that there is only one bus or one type of bus.
  • Memory 1003 can be ROM (Read Only Memory, read-only memory) or other types of static storage devices that can store static information and instructions, RAM (Random Access Memory, random access memory) or other types of memory that can store information and instructions Dynamic storage devices can also be EEPROM (Electrically Erasable Programmable Read Only Memory, Electrically Erasable Programmable Read Only Memory), CD-ROM (Compact Disc ReadOnly Memory, CD-ROM) or other CD-ROM storage, CD-ROM storage (including compact CD-ROM , Laser Disc, Optical Disc, Digital Versatile Disc, Blu-ray Disc, etc.), magnetic disk storage medium or other magnetic storage device, or any Other media, but not limited to.
  • EEPROM Electrically Erasable Programmable Read Only Memory
  • CD-ROM Compact Disc ReadOnly Memory
  • CD-ROM Compact Disc ReadOnly Memory
  • CD-ROM storage including compact CD-ROM , Laser Disc, Optical Disc, Digital Versatile Disc, Blu-ray Disc, etc.
  • the memory 1003 is used to store application program codes for executing the solutions of the present application, and the execution is controlled by the processor 1001 .
  • the processor 1001 is configured to execute the application program code stored in the memory 1003, so as to realize the contents shown in the foregoing method embodiments.
  • An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and when it is run on a computer, the computer can execute the corresponding content in the foregoing method embodiments.
  • the network side by determining the first measurement information when triggering the discovery, selection and/or reselection of the relay UE and reporting it to the network side, it is possible for the network side to optimize the configured relay UE selection and reselection information, Avoid the problem of frequent switching when the remote UE chooses to use the relay UE due to inappropriate relay selection criteria and/or inappropriate relay reselection criteria configured on the network side, thereby improving the correctness of the remote UE in selecting the relay UE , to improve system performance.
  • An embodiment of the present application provides a computer program, the computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, when the processor of the computer device reads the computer instructions from the computer-readable storage medium, the processor Executing the computer instructions causes the computer device to execute the content shown in the foregoing method embodiments.
  • the network side Compared with the prior art, by determining the first measurement information when triggering the discovery, selection and/or reselection of the relay UE and reporting it to the network side, it is possible for the network side to optimize the configured relay UE selection and reselection information, Avoid the problem of frequent switching when the remote UE chooses to use the relay UE due to inappropriate relay selection criteria and/or inappropriate relay reselection criteria configured on the network side, thereby improving the correctness of the remote UE in selecting the relay UE , to improve system performance.
  • the data transmission method, the remote UE, the relay UE, and the storage medium provided by the embodiments of the present application can be used by the network side by determining the first measurement information when triggering discovery, selection, and/or reselection of the relay UE and reporting to the network side.

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Abstract

本申请实施例提供了一种数据传输方法、远端UE、中继UE及存储介质。该数据传输方法包括：确定触发发现、选择和/或重选中继UE时的第一测量信息；上报所述第一测量信息至网络设备。

Description

数据传输方法、远端UE、中继UE及存储介质
相关申请的交叉引用
本申请要求于2021年11月17日在中国国家知识产权局提交的申请号为CN202111362392.2的中国专利申请的优选权，其全部内容通过引用整体并入本文。
技术领域
本申请涉及通信技术领域，具体而言，本申请涉及一种数据传输方法、远端UE、中继UE及存储介质。
背景技术
在sidelink relay场景下，远端UE(用户设备，User Equipment)在满足某些条件时需要发现中继UE，并根据中继选择准则选择中继UE，在和中继UE建立PC5连接后，如果当前的PC5质量较差，则根据中继重选准则重选中继UE，以保证连接到质量更好的中继UE。
在远端UE选择中继UE的过程中，可能会因为网络侧配置的中继选择准则不合适或者中继重选准则不合适，或者因为中继UE在充当中继的时候不能提供较好的服务而导致远端UE在频繁地重选中继UE。
发明内容
第一方面，提供了一种数据传输方法，应用于远端UE，所述方法包括：确定触发发现、选择和/或重选中继UE时的第一测量信息；上报所述第一测量信息至网络设备。
在一个可能的实现方式中，所述第一测量信息包括信道质量相关信息、终端设备相关信息、连接时长相关信息以及触发重选中继UE的原因中的一种或多种。
在一个可能的实现方式中，信道质量相关信息包括以下一种或多种：所述远端UE的Uu链路信道质量；所述远端UE与所选择的中继UE之间的第一PC5链路信道质量；所述远端UE与触发重选时连接的中继UE间的第二PC5链路信道质量；所述远端UE与所重选的中继UE之间的第三PC5链路信道质量；配置的触发发现的第一信道质量阈值；配置的选择/重选中继UE的第二信道质量阈值；配置的触发重选中继UE的第三信道质量阈值；所述第一信道质量阈值与所述Uu链路信道质量间的差值；所述第二信道质量阈值与所述第一PC5链路信道质量或第三PC5链路信道间的差值；所述第三信道质量阈值与所述第二PC5链路信道质量或所述第三PC5链路信道质量 间的差值；选择的中继UE的Uu链路信道质量；重选的中继UE的Uu链路信道质量。
在一个可能的实现方式中，终端设备相关信息包括以下一种或多种：选择的中继UE的标识信息和/或位置信息；重选的中继UE的标识信息和/或位置信息；所述远端UE的标识信息和位置信息。
在一个可能的实现方式中，连接时长相关信息包括以下一种或多种：所述远端UE与选择的中继UE进行PC5连接的时长；所述远端UE与重选的中继UE进行PC5连接的时长。
在一个可能的实现方式中，触发重选中继UE的原因，包括以下一种或多种：与已建立连接的中继UE之间的PC5链路信道质量低于所述第二信道质量阈值；与当前连接的中继UE之间的PC5连接由高层指示进行释放；当检测到当前PC5连接过程中发生无线链路失败RLF；由高层指示。
在一个可能的实现方式中，数据传输方法还包括：当所述远端UE从PC5连接切换到Uu连接时，停止确定所述第一测量信息。
第二方面，提供了一种数据传输方法，应用于中继UE，所述方法包括：确定触发发现、与远端UE进行PC5连接、发生PC5RLF和/或发生Uu RLF时的第二测量信息；上报所述第二测量信息至网络设备。
在一个可能的实现方式中，第二测量信息包括信道质量相关信息、终端设备相关信息、RLF相关信息中的一种或多种。
在一个可能的实现方式中，信道质量相关信息包括以下一种或多种：触发发现时所述中继UE的Uu链路信道质量；建立PC5连接时与远端UE之间的PC5链路信道质量；网络侧配置的触发发现时的第四信道质量阈值和第五信道质量阈值，所述第四信道质量阈值低于所述第五信道质量阈值；在同时连接的远端UE的数量为最低数量时的第一平均PC5链路信道质量；在同时连接的远端UE的数量为最高数量时的第二平均PC5链路信道质量。
在一个可能的实现方式中，终端设备相关信息包括以下一种或多种：同时连接的远端UE的最低数量；同时连接的远端UE的最高数量。
在一个可能的实现方式中，RLF相关信息包括以下一种或多种：发生Uu RLF的次数；发生Uu RLF时中继UE的位置信息、与远端UE之间的PC5链路信道质量、Uu链路信道质量、同时连接的远端UE的数量、标识信息以及中继UE与远端UE进行PC5连接的时长中的一种或多种；发生PC5RLF的次数；发生PC5RLF时中继UE的位置信息、与远端UE之间的PC5链路信道质量、Uu链路信道质量、同时连接的远端UE的数量、标识信息以及远端UE与中继UE进行PC5连接的时长中的一种或多种。
在一个可能的实现方式中，数据传输方法还包括：接收远端UE发送的上报请求，向所述远端UE上报所述中继UE的位置信息和Uu链路信道质量中的一种或多种。
第三方面，本申请实施例还提供一种远端UE，包括：第一测量信息确定模块，用于确定触发发现、选择和/或重选中继UE时的第一测量信息；第一测量信息上报模块，用于上报所述第一测量信息至网络。
第四方面，本申请实施例还提供一种中继UE，包括：第二测量信息确定模块，用于确定触发发现、与远端UE进行PC5连接、发生PC5RLF和/或发生Uu RLF时的第二测量信息；第二测量信息上报模块，用于上报所述第二测量信息至网络设备。
第五方面，本申请实施例还提供一种UE，包括存储器，收发机和处理器。
存储器用于存储计算机程序；收发机用于在所述处理器的控制下收发数据；处理器用于读取所述存储器中的计算机程序并执行如第一或第二方面所述数据传输方法的步骤。
第六方面，本申请实施例提供一种电子设备，包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序，处理器执行程序时实现如第一或第二方面所提供的方法的步骤。
第七方面，本申请实施例提供一种计算机可读存储介质，其上存储有计算机程序，该计算机程序被处理器执行时实现如第一或第二方面所提供的方法的步骤。
第八方面，本申请实施例提供一种计算机程序产品，该计算机程序产品包括计算机指令，该计算机指令存储在计算机可读存储介质中，当计算机设备的处理器从计算机可读存储介质读取该计算机指令，处理器执行该计算机指令，使得该计算机设备执行实现如第一或第二方面所提供的方法的步骤。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对本申请实施例描述中所需要使用的附图作简单地介绍。
图1为本申请实施例的一种通信系统的示意性架构图；
图2为本申请实施例的数据传输方法的流程示意图；
图3为本申请另一个实施例的数据传输方法的流程示意图；
图4为本申请实施例的远端UE选择和重选中继UE的交互示意图；
图5为本申请实施例网络侧设置的可作为中继UE的信道质量阈值的范围示意图；
图6为本申请实施例的中继UE在数据传输过程中的交互示意图；
图7为本申请实施例的远端UE的结构示意图；
图8为本申请实施例的中继UE的结构示意图；
图9为本申请实施例提供的一种UE的结构示意图；
图10为本申请实施例提供的一种电子设备的结构示意图。
具体实施方式
下面详细描述本申请的实施例，实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能解释为对本申请的限制。
本技术领域技术人员可以理解，除非特意声明，这里使用的单数形式“一”、“一个”和“该”也可以包括复数形式。应该进一步理解的是，本申请的说明书中使用的措辞“包括”是指存在特征、整数、步骤、操作、元件和/或组件，但是并不排除存在或添加一个或多个其他特征、整数、步骤、操作、元件、组件和/或它们的组。应该理解，当我们称元件被“连接”或“耦接”到另一元件时，它可以直接连接或耦接到其他元件，或者也可以存在中间元件。此外，这里使用的“连接”或“耦接”可以包括无线连接或无线耦接。这里使用的措辞“和/或”包括一个或更多个相关联的列出项的全部或任一单元和全部组合。
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
首先，对本申请涉及的几个名词进行介绍和解释。
一)sidelink relay中继UE和远端UE发现过程。
发现条件可以为：中继UE能够更多的靠近小区边缘，这样能够为更多的覆盖外UE(后续称之为远端UE)提供中继服务。通过设置一个高阈值(即中继UE的Uu链路信道质量不得超过该高阈值)来限定当前中继UE不要过于靠近小区中心。同时，为了保证中继UE能够提供高质量的中继服务，需要使中继UE不能过远的远离小区中心，并通过一个低阈值(即中继UE的Uu链路信道质量不得低于该低阈值)来进行限定。也就是说，只有当relay UE(中继UE)的Uu信道质量处于低阈值和高阈值之间时，才可能提供所需的中继服务。对于Remote UE(远端UE)而言，仅采用一个阈值门限来判断触发。当远端UE当前Uu(其中，U表示用户网络接口(User to Network interface)，u表示通用，即Uu指用户网络接口通用)链路信道质量低于该阈值门限时，即可触发远端UE的发现操作，从而发现为其提供中继服务的中继UE。
二)sidelink relay中继UE选择和重选过程。
远端UE触发中继UE的选择条件可以如下：1)UE当前服务小区直接连接的Uu信道质量低于配置的信号强度门限；或者，2)由高层指示。
远端UE触发中继UE的重选条件可以如下：1)与当前连接U2N中继UE之间的PC5链路信道质量低于(预)配置信号强度门限；2)与当前连接U2N中继UE之间的PC5连接由高层指示进行释放(例如，当中继UE检测到Uu口发生无线链路失败(Radio link failure，RLF)时，或当中继UE执行切换到其它基站时)；3)当U2N远端UE检测到当前PC5口发生RLF时；或者，4)由高层指示。
远端UE选择/重选中继UE的标准可以如下：
远端UE比较中继UE的PC5无线链路信道质量和网络侧配置的信号强度门限， 如果和中继UE的PC5无线链路信道质量高于网络侧配置的信号强度门限，则选择该中继UE。如果和多个中继UE的PC5无线链路信道质量均高于网络侧配置的信号强度门限，则由远端UE选择该多个中继UE中的一个中继UE。
在远端UE选择中继UE的过程中，可能会因为网络侧配置的中继选择准则不合适(和/或中继重选准则不合适)而导致远端UE在频繁地重选中继UE，或者可能会因为中继UE在充当中继的时候不能提供较好的服务(例如，Uu链路信道质量较差或者PC5无线链路信道质量较差)而导致远端UE在频繁地重选中继UE。
本申请提供的数据传输方法，至少可以解决现有技术的如上技术问题。
下面以具体的实施例对本申请的技术方案以及本申请的技术方案如何解决上述技术问题进行详细说明。下面这几个具体的实施例可以相互结合，对于相同或相似的概念或过程可能在某些实施例中不再赘述。下面将结合附图，对本申请的实施例进行描述。
图1示例性地示出本申请实施例的通信系统的示意性架构图。
参见图1，通信系统可以包括至少一个基站和至少一个用户设备。
本申请实施例提供的基站可以为通用移动通信系统(Universal Mobile Telecommunications System，UMTS)下的基站(Node B，NB)、长期演进技术(Long Term Evolution，LTE)下的演进型基站(eNodeB，eNB)或者第五代移动通信系统下的基站或控制器。
本申请实施例涉及的用户设备(也称终端设备)，可以是指向用户提供语音和/或数据连通性的设备、具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备等。在不同的系统中，终端设备的名称可能也不相同，例如在5G系统中，终端设备可以称为用户设备(User Equipment，UE)。无线终端设备可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网(Core Network，CN)进行通信。无线终端设备可以是移动终端设备(如移动电话(或称为“蜂窝”电话))和具有移动终端设备的计算机(例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置)，它们与无线接入网交换语言和/或数据。例如，无线终端设备可以为个人通信业务(Personal Communication Service，PCS)电话、无绳电话、会话发起协议(Session Initiated Protocol，SIP)话机、无线本地环路(Wireless Local Loop，WLL)站、个人数字助理(Personal Digital Assistant，PDA)等设备。无线终端设备也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、用户装置(user device)等，本申请实施例中并不限定。
此外，本申请实施例提供的技术方案可以适用于多种系统，尤其是5G系统。例 如，适用的系统可以是全球移动通讯(global system of mobile communication，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)通用分组无线业务(general packet radio service，GPRS)系统、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、高级长期演进(long term evolution advanced，LTE-A)系统、通用移动系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)系统、5G新空口(New Radio，NR)系统等。这多种系统中均包括终端设备和网络设备。系统中还可以包括核心网部分，例如演进的分组系统(Evolved Packet System，EPS)、5G系统(5GS)等。
图2示例性地示出了本申请实施例的数据传输方法的流程示意图。该数据传输方法应用于远端UE。如图2所示，该数据传输方法可以包括步骤S101和S102。
在步骤S101中，确定触发发现、选择和/或重选中继UE时的第一测量信息。
需要说明的是，本申请实施例不限于在触发发现、选择和/或重选中继UE时确定第一测量信息，可以在触发发现、选择和/或重选时存储(或者记录)第一测量信息。在需要将第一测量信息上报至网络设备时，可以根据存储的第一测量信息，确定需要上报的第一测量信息。
在步骤S102中，上报第一测量信息至网络设备。
本申请实施例的远端UE通过确定触发发现、选择和/或重选中继UE时的第一测量结果，并上报到网络侧，能够供网络侧用于优化所配置的中继UE的选择和重选信息，避免因为网络侧配置的中继选择准则不合适和/或中继重选准则不合适而导致远端UE选择使用中继UE时频繁切换的问题，进而提升远端UE选择中继UE的正确性，提升系统性能。
在本申请的另一个实施例中，第一测量信息包括信道质量相关信息、终端设备相关信息、连接时长相关信息以及触发重选中继UE的原因中的一种或多种。
信道质量相关信息包括以下1)至12)中的一种或多种。
1)远端UE的Uu链路信道质量。
由于触发发现的条件是远端UE的Uu链路信道质量低于配置的第一Uu链路测量阈值，因此记录该信息能够供网络侧根据该信息判断是否需要调整第一Uu链路测量阈值。例如，如果网络侧确定此时网络中充当远端UE的数量较多，或者远端UE并不靠近小区边缘，或者远端UE频繁触发发现且每次触发发现时Uu链路信道质量略低于第一Uu链路测量阈值，那么就可以将第一Uu链路测量阈值调低一些。
在本申请中，Uu链路可以指基于Uu接口的链路。
2)远端UE与所选择的中继UE之间的第一PC5链路信道质量。
记录该信息能够供网络侧更了解远端UE选择中继UE的偏好以及建立PC5连接 时的PC5链路信道质量。结合触发重选时与当前连接的中继UE的第二PC5链路信道质量，网络侧能够了解一次PC5连接过程中PC5链路信道质量的变化情况，并且当出现频繁重选时，可以根据变化情况找出规律，优化Uu链路阈值、PC5链路信道质量阈值等等。
3)远端UE与触发重选时连接的中继UE间的第二PC5链路信道质量。
4)远端UE与所重选的中继UE之间的第三PC5链路信道质量。
记录该信息能够供网络侧更了解远端UE重选中继UE的偏好以及在刚开始建立PC5连接时的PC5链路通信质量。结合触发重选时与当前连接的中继UE的PC5链路信道质量，网络侧能够更了解一次PC5连接过程中PC5链路信道质量的变化情况，并且当出现频繁重选时，可以根据变化情况找出规律，优化Uu链路阈值、PC5链路信道质量阈值等等。
5)配置的触发发现的第一信道质量阈值。
6)配置的选择/重选中继UE的第二信道质量阈值。
7)配置的触发重选中继UE的第三信道质量阈值；具体地，第三信道质量阈值可以是针对PC5链路信道质量设置的阈值；第二信道质量阈值可以与第三信道质量阈值相同，本申请实施例不作具体的限定。
8)第一信道质量阈值与Uu链路信道质量之间的差值。
9)第二信道质量阈值与第一PC5链路信道质量或第三PC5链路信道之间的差值。
10)第三信道质量阈值与第二PC5链路信道质量或第三PC5链路信道质量之间的差值。
11)选择的中继UE的Uu链路信道质量。
12)重选的中继UE的Uu链路信道质量。
终端设备相关信息包括以下一种或多种：1)选择的中继UE的标识信息和/或位置信息；2)重选的中继UE的标识信息和/或位置信息；3)远端UE的标识信息和位置信息。
连接时长相关信息包括以下一种或多种：1)远端UE与选择的中继UE进行PC5连接的时长；2)远端UE与重选的中继UE进行PC5连接的时长。触发重选中继UE的原因，包括以下一种或多种：1)与已建立连接的中继UE之间的PC5链路信道质量低于第二信道质量阈值；2)与当前连接的中继UE之间的PC5连接由高层指示进行释放；3)当检测到当前PC5连接过程中发生无线链路失败RLF；4)由高层指示。
在上述各实施例的基础上，作为一种可选实施例，当远端UE从PC5连接切换到Uu连接，则停止记录第一测量结果。
需要说明的是，远端UE在执行发现中继UE、选择中继UE、重选中继UE的过程中，可以实时地或者按照需要测量/获取执行过程中产生的相关信息，这些信息可 以称之为第一测量信息。
图3示例性地示出了本申请另一个实施例的数据传输方法的流程示意图。该数据传输方法应用于中继UE。如图3所示，该数据传输方法可以包括步骤S201和S202。
在步骤S201中，确定触发发现、与远端UE进行PC5连接、发生PC5RLF和/或发生Uu RLF时的第二测量信息。
在步骤S202中，上报第二测量信息至网络设备。
在上述各实施例的基础上，作为一种可选实施例，第二测量信息可以包括信道质量相关信息、UE相关信息、RLF相关信息中的一种或多种。
在上述各实施例的基础上，作为一种可选实施例，信道质量相关信息包括可以以下一种或多种：
1)触发发现时中继UE的Uu链路信道质量；
2)建立PC5连接时与远端UE之间的PC5链路信道质量；
3)网络侧配置的触发发现时的第四信道质量阈值和第五信道质量阈值，第四信道质量阈值低于第五信道质量阈值；
4)在同时连接的远端UE的数量为最低数量时的第一平均PC5链路信道质量；
5)在同时连接的远端UE的数量为最高数量时的第二平均PC5链路信道质量。
平均PC5链路信道质量根据同时连接的远端UE的PC5链路信道质量的总和除以同时连接的远端UE的数量得到。具体的，对于第一平均PC5链路信道质量，是根据同时连接的最低数量的远端UE的PC5链路信道质量的综合，除以该最低数量获得的。对于第二平均PC5链路信道质量，是根据同时连接的最高数量的远端UE的PC5链路信道质量的综合，除以该最高数量获得的。
在上述各实施例的基础上，作为一种可选实施例，UE相关信息包括以下一种或多种：1)同时连接的远端UE的最低数量；2)同时连接的远端UE的最高数量。
在上述各实施例的基础上，作为一种可选实施例，RLF相关信息包括以下一种或多种：
1)发生Uu RLF的次数；
2)发生Uu RLF时中继UE的位置信息、与远端UE之间的PC5链路信道质量、Uu链路信道质量、同时连接的远端UE的数量、标识信息以及中继UE与远端UE进行PC5连接的时长中的一种或多种；
3)发生PC5RLF的次数；
4)发生PC5RLF时中继UE的位置信息、与远端UE之间的PC5链路信道质量、Uu链路信道质量、同时连接的远端UE的数量、标识信息以及远端UE与中继UE进行PC5连接的时长中的一种或多种。
在上述各实施例的基础上，作为一种可选实施例，数据传输方法还包括：接收远端UE发送的上报请求，向远端UE上报中继UE的位置信息和Uu链路信道质量中的 一种或多种。
也就是说，如果远端UE想要向网络侧上报选择的中继UE的位置信息和或Uu链路信道质量时，需要预先向选择的中继UE请求上报该中继UE的位置信息和/或Uu链路信道质量，以指示选择的中继UE向远端UE发送位置信息和/或Uu链路信道质量。
同理，如果远端UE想要向网络侧上报重选的中继UE的位置信息和或Uu链路信道质量时，需要预先向重选的中继UE请求上报该中继UE的位置信息和/或Uu链路信道质量，以指示重选的中继UE向远端UE发送位置信息和/或Uu链路信道质量。
图4示例性地示出了本申请实施例的远端UE选择和重选中继UE的交互示意图。如图4所示，远端UE选择和重选中继UE的交互可以包括以下1-5。
1.当远端UE测量的Uu链路信道质量小于触发发现过程配置的阈值(例如第一信道质量阈值)，则触发发现。远端UE触发发现后可以使其他中继UE发现此时有远端UE需要进行PC5连接。同时，若中继UE测量Uu链路质量在高阈值和低阈值范围内(例如第四信道质量阈值和第五信道质量阈值)，则进行发现。中继UE进行发现后可以使其他远端UE发现此时有中继UE可以进行PC5连接。
此时远端UE记录的信息可以包括：远端UE的Uu链路信道质量、触发发现过程配置的阈值(第一信道质量阈值)、以及Uu链路质量小于触发发现过程配置的阈值的指示信息和两者之间的差值。
2.远端UE根据与中继UE之间PC5链路信道质量(中继UE可以为一个或者多个，PC5链路信道质量以SD-RSRP表征)选择中继UE。例如，远端UE测量与中继UE1之间的PC5链路信道质量，T1时刻测量的与中继UE1之间的PC5链路信道质量高于配置的选择阈值(第二信道质量阈值)，则可以选择该中继UE1建立PC5连接。
此时远端UE记录的信息可以包括：远端UE在发现时的PC5链路信道质量(SD-RSRP)，远端UE与选择的中继UE1间的PC5链路信道质量，配置的第二信道质量阈值，远端UE与选择的中继UE1间的PC5链路信道质量与第二信道质量阈值的大小比较结果、比较差值，中继UE1的Uu链路信道质量，中继UE1的标识信息、位置信息等。
3.远端UE测量得到与中继UE1之间的PC5链路信道质量低于第三信道质量阈值，则T2时刻触发中继UE重选，并在T3时刻重选到中继UE2。需要注意的是，第二信道质量阈值和第三信道质量阈值可以配置为同一阈值，也可以不同。
此时远端UE记录的信息可以包括：触发重选时的远端UE与中继UE1之间的PC5链路信道质量，配置的第三信道质量阈值以及两者之间的差值，远端UE与中继UE1间的PC5连接时长(T2-T1)，以及触发重选的原因：远端UE和中继UE1间的PC5链路信道质量低于配置的第三信道阈值；远端UE与重选的中继UE2之间的PC5链路信道质量，配置的第三信道质量阈值以及两者之间的差值，中继UE2的Uu链路质 量、标识信息、位置信息等。
4.远端UE测量得到与中继UE2之间的PC5链路信道质量低于第三信道质量阈值，则T4时刻触发中继UE重选，并在T5时刻重选到中继UE3。
此时远端UE记录的信息可以包括：远端UE触发重选时的与中继UE2之间的PC5链路信道质量，配置的第三信道质量阈值以及两者之间的差值，远端UE与中继UE2的PC5连接时长(T4-T3)，与中继UE1的PC5连接时长(T2-T1)，以及触发重选的原因是和当前连接中继UE的PC5链路质量低于配置的第三信道质量阈值；与重选中继UE3之间的PC5链路信道质量，配置的第三信道质量阈值以及两者之间的差值，中继UE3的Uu链路质量、标识信息和位置信息。
5.远端UE进入连接态后或者切换到直连链路后，可向网络侧发送第一测量结果有效的指示信息，当网络侧请求上报中继UE选择/重选信道质量后上报以上记录的内容。
图5示出了网络侧设置的可作为中继UE的信道质量阈值的范围示意图。如图5所示，网络侧配置了高阈值门限和低阈值门限，高阈值门限对应图5中的A圈，低阈值门限对应图中的B圈。UE的Uu链路信道质量处于高、低阈值门限之间时，可作为中继UE，也即位于A圈和B圈内的UE可以充当中继UE。网络侧还配置了阈值C(图5中未示出)，使得UE的Uu链路信道质量低于阈值C时，可以充当远端UE。如果远端UE测量的与中继UE之间的PC5链路信道质量高于阈值D(图5中未示出)，则可以进行选择中继UE，并通过中继UE和基站进行通信。
基站侧接收到图4所示实施例中的远端UE的信道质量后，检测到远端UE上报的触发重选的原因，都是远端UE与连接的中继UE之间的PC5链路信道质量低于配置的第二信道质量阈值，可以得到如下原因：由于网络侧配置的A圈和B圈对应的信道质量阈值不合理，导致UE不能选择到一个合适的中继UE，以至于远端UE一直在进行重选；或者远端UE进行选择中继UE的阈值D配置的不合理。
网络侧的优化方法：因为影响PC5链路信道质量的主要原因是UE之间相隔的距离，所以网络侧可以通过把A圈对应的阈值(第五信道质量阈值)调低，或者把D阈值(第二信道质量阈值)或者第三信道质量阈值调高，来优化远端UE选择中继UE的质量。
A圈对应的阈值调低，相当于把A圈往外扩，远端UE不会选择到离网络侧太近的中继UE，则远端UE选择的中继UE的PC5链路信道质量不会太靠近配置阈值D。
D阈值调高，相当于把远端UE选择中继UE的阈值调高，使得远端UE不会选择到离A圈太近的中继UE。
图6示例性地示出了本申请实施例的中继UE在数据传输过程中的交互示意图。中继UE可以上报自己在充当中继时的一些测量信息，帮助网络侧得知中继UE在充当中继的时候的网络状况。例如，测量信息可以是与多少个远端UE进行连接，每个 远端UE的PC5链路信道质量或者连接的时长，以及是否是由于Uu链路信道质量太差才导致PC5连接失败，由此供网络侧更准确判断选择重选中继UE的准则是否合适，即某个UE是否可以充当中继UE的准则。
如图6所示：
1.中继UE测量Uu链路质量在第四信道质量阈值和第五信道质量阈值之间，则触发发现。中继UE触发发现后可以使其远端UE发现此时有中继UE可以进行PC5连接，在与远端UE连接成功后，可充当中继UE。此时中继UE记录的信息可以包括：中继UE的Uu链路质量、触发发现过程配置的第四信道质量阈值和第五信道质量阈值。
2.远端UE1/2/3/4分别和中继UE建立PC5连接。
此时中继UE记录的信息可以包括：中继UE与远端UE1/2/3/4之间的PC5链路信道质量(SL-RSRP)，以及远端UE的标识信息，其中远端UE标识和中继UE与远端UE的PC5链路信道质量是一一对应的。
3.若中继UE和远端UE2发生PC5RLF，则记录一次PC5RLF，并记录每次PC5RLF时中继UE与远端UE间的PC5链路信道质量、Uu链路信道质量、发生PC5RLF时连接的远端UE2的标识信息，中继UE与远端UE2进行PC5连接的时长。
4.中继UE发生Uu RLF，则与所有的远端UE1/3/4断开PC5连接，则记录一次Uu RLF，此时与远端UE1/3/4间的PC5链路信道质量、Uu链路信道质量、发生Uu RLF时连接的远端UE1/3/4的标识信息，中继UE与远端UE1/3/4进行PC5连接的时长。
5.中继UE重建成功，当满足充当中继UE的条件时，继续进行发现，使其他远端UE发现该中继UE可以进行PC5连接，图示中中继UE与远端UE5/6建立PC5连接，后续发生Uu RLF，则记录两次Uu RLF(更新之前记录的Uu RLF次数)，此时与远端UE 5/6间的PC5链路信道质量、Uu链路信道质量，发生Uu RLF时的连接的远端UE5/6的标识信息，与远端UE5/6进行PC5连接的时长。
6.中继UE会在RRC Reestablishment Complete消息中包含中继UE选择/重选过程相关信息的指示信息，当网络侧请求上报中继UE的测量信息时，上报以上记录的内容。
在图6所示实施例的基础上，网络侧接收到中继UE上报的信息后，检测到中继UE在充当中继UE的过程中发生了两次Uu RLF，一次PC5RLF，与6个远端UE建立过PC5连接，5个远端UE(包括远端UE1/3/4/5/6)是因为发生Uu RLF发生PC5连接断开，1个远端UE(包括远端UE2)是因为发生PC5RLF。
网络侧接收到中继UE上报的信息后，检测到中继UE总是因为Uu RLF导致与远端UE之间断开PC5连接，并通过中继UE上报的PC5链路信道质量和Uu信道质量判断是因为B圈配置的太远还是A圈配置的远。
如果PC5链路信道质量较好，Uu信道质量较差，同时中继UE的位置离网络侧 较远，则判断B圈配置的不合适，导致中继UE离网络侧太远不能提供较好的Uu链路通信，所以网络侧可以把阈值B调高，离网络侧更近；如果中继UE的位置离网络侧较远，则判断A圈配置的不合适，可以把阈值A调高，离网络侧更近。
在上述各实施例的基础上，作为一种可选实施例，远端UE进入连接态后，远端UE可以在专用信令(例如RRC Setup Complete/RRC Reconfiguration Complete/RRC Reestablishment Complete/RRC Resume Complete)中上报有有效的中继UE选择/重选过程相关信息的指示信息。
网络侧在专用信令(例如RRC Reconfiguration/UE Information Request)中请求UE上报目标过程的相关信息。
UE后续在专用信令(例如UE Information Response)中上报记录相关信息。
本申请实施例提供了一种远端UE。如图7所示，该远端UE可以包括：第一测量信息确定模块701和第一测量信息上报模块702。
第一测量信息确定模块701用于确定触发发现、选择和/或重选中继UE时的第一测量信息。
第一测量信息上报模块702用于上报第一测量信息至网络。
第一测量信息确定模块702还用于：当远端UE从PC5连接切换到Uu连接时，停止确定第一测量信息。
本申请实施例提供的远端UE，可以具体执行上述应用于远端UE的数据传输方法的实施例流程，具体请详见上述数据传输方法实施例的内容，在此不再赘述。本申请实施例提供的远端UE，通过确定触发发现、选择和/或重选中继UE时的第一测量结果，并上报到网络侧，能够供网络侧优化所配置的中继UE的选择和重选信息，避免因为网络侧配置的中继选择准则不合适和/或中继重选准则不合适而导致远端UE选择使用中继UE时频繁切换的问题，进而提升远端UE选择中继UE的正确性，提升系统性能。
本申请实施例提供了一种中继UE。如图8所示，该中继UE可以包括：第二测量信息确定模块801和第二测量信息上报模块802。
第二测量信息确定模块801用于确定触发发现、与远端UE进行PC5连接、发生PC5RLF和/或发生Uu RLF时的第二测量信息。
第二测量信息上报模块802用于上报第二测量信息至网络设备。
第二测量信息上报模块802还用于接收远端UE发送的上报请求，向远端UE上报中继UE的位置信息和Uu链路信道质量中的一种或多种。
本申请实施例提供的中继UE，具体执行上述应用于中继UE的数据传输方法的实施例流程，具体请详见上述数据传输方法实施例的内容，在此不再赘述。本申请实施例提供的中继UE，通过确定触发发现、与远端UE进行PC5连接、发生PC5RLF和/或发生Uu RLF时的第二测量信息，并上报第二测量结果至网络设备，能够供网络 侧优化所配置的中继UE的选择和重选信息，避免因为网络侧配置的中继选择准则不合适和中继重选准则不合适而导致远端UE选择使用中继UE时频繁切换的问题，进而提升远端UE选择中继UE的正确性，提升系统性能。
如图9所示，本申请的实施例还提供了一种UE，包括存储器901、收发机902和处理器903。
存储器901用于存储计算机程序。
收发机902用于在处理器903的控制下接收和发送数据。
处理器903用于读取存储器901中的计算机程序并执行以下操作：确定触发发现、选择和/或重选中继UE时的第一测量信息；上报第一测量信息至网络设备。
处理器903还用于执行以下操作：当所述远端UE从PC5连接切换到Uu连接时，停止确定所述第一测量信息。
或者，处理器903用于读取存储器901中的计算机程序并执行以下操作：确定触发发现、与远端UE进行PC5连接、发生PC5RLF和/或发生Uu RLF时的第二测量信息；上报第二测量信息至网络设备。
处理器903还用于执行以下操作：接收远端UE发送的上报请求，向所述远端UE上报所述中继UE的位置信息和Uu链路信道质量中的一种或多种。
在图9中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器903代表的一个或多个处理器903和存储器901代表的存储器901的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本申请实施例不再对其进行进一步描述。总线接口904提供接口。收发机902可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。这些传输介质包括无线信道、有线信道、光缆等传输介质。处理器903负责管理总线架构和通常的处理。存储器901可以存储处理器903在执行操作时所使用的数据。
处理器903可以是中央处埋器(CPU)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device，CPLD)，处理器903也可以采用多核架构。
处理器903通过调用存储器901存储的计算机程序，用于按照获得的可执行指令执行本申请实施例提供的任一数据传输方法。处理器903与存储器901也可以物理上分开布置。
本申请实施例中提供了一种电子设备，该电子设备包括：存储器和处理器；至少一个程序，存储于存储器中，用于被处理器执行时，与现有技术相比可实现：通过确定触发发现、选择和/或重选中继UE时的第一测量信息并上报到网络侧，能够供网络侧优化所配置的中继UE的选择和重选信息，避免因为网络侧配置的中继选择准则不 合适和/或中继重选准则不合适而导致远端UE选择使用中继UE时频繁切换的问题，进而提升远端UE选择中继UE的正确性，提升系统性能。
在一个可选实施例中提供了一种电子设备，如图10所示。图10所示的电子设备1000包括：处理器1001和存储器1003。处理器1001和存储器1003相连，如通过总线1002相连。可选地，电子设备1000还可以包括收发器1004。需要说明的是，实际应用中收发器1004不限于一个。该电子设备1000的结构并不构成对本申请实施例的限定。
处理器1001可以是CPU(Central Processing Unit，中央处理器)，通用处理器，DSP(Digital Signal Processor，数据信号处理器)，ASIC(Application Specific Integrated Circuit，专用集成电路)，FPGA(Field-Programmable Gate Array，现场可编程门阵列)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。处理器1001也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等。
总线1002可以包括一通路，在上述组件之间传送信息。总线1002可以是PCI(Peripheral Component Interconnect，外设部件互连标准)总线或EISA(Extended Industry Standard Architecture，扩展工业标准结构)总线等。总线1002可以分为地址总线、数据总线、控制总线等。为便于表示，图10中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
存储器1003可以是ROM(Read Only Memory，只读存储器)或可存储静态信息和指令的其他类型的静态存储设备，RAM(Random Access Memory，随机存取存储器)或者可存储信息和指令的其他类型的动态存储设备，也可以是EEPROM(Electrically Erasable Programmable Read Only Memory，电可擦可编程只读存储器)、CD-ROM(Compact Disc ReadOnly Memory，只读光盘)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。
存储器1003用于存储执行本申请方案的应用程序代码，并由处理器1001来控制执行。处理器1001用于执行存储器1003中存储的应用程序代码，以实现前述方法实施例所示的内容。
本申请实施例提供了一种计算机可读存储介质，该计算机可读存储介质上存储有计算机程序，当其在计算机上运行时，使得计算机可以执行前述方法实施例中相应内容。与现有技术相比，通过确定触发发现、选择和/或重选中继UE时的第一测量信息并上报到网络侧，能够供网络侧优化所配置的中继UE的选择和重选信息，避免因为网络侧配置的中继选择准则不合适和/或中继重选准则不合适而导致远端UE选择使 用中继UE时频繁切换的问题，进而提升远端UE选择中继UE的正确性，提升系统性能。
本申请实施例提供了一种计算机程序，该计算机程序包括计算机指令，该计算机指令存储在计算机可读存储介质中，当计算机设备的处理器从计算机可读存储介质读取该计算机指令，处理器执行该计算机指令，使得该计算机设备执行如前述方法实施例所示的内容。与现有技术相比，通过确定触发发现、选择和/或重选中继UE时的第一测量信息并上报到网络侧，能够供网络侧优化所配置的中继UE的选择和重选信息，避免因为网络侧配置的中继选择准则不合适和/或中继重选准则不合适而导致远端UE选择使用中继UE时频繁切换的问题，进而提升远端UE选择中继UE的正确性，提升系统性能。
本申请实施例提供的数据传输方法、远端UE、中继UE及存储介质，通过确定触发发现、选择和/或重选中继UE时的第一测量信息并上报到网络侧，能够供网络侧优化所配置的中继UE的选择和重选信息，避免因为网络侧配置的中继选择准则不合适和/或中继重选准则不合适而导致远端UE选择使用中继UE时频繁切换的问题，进而提升远端UE选择中继UE的正确性，提升系统性能。
应该理解的是，虽然附图的流程图中的各个步骤按照箭头的指示依次显示，但是这些步骤并不是必然按照箭头指示的顺序依次执行。除非本文中有明确的说明，这些步骤的执行并没有严格的顺序限制，其可以以其他的顺序执行。而且，附图的流程图中的至少一部分步骤可以包括多个子步骤或者多个阶段，这些子步骤或者阶段并不必然是在同一时刻执行完成，而是可以在不同的时刻执行，其执行顺序也不必然是依次进行，而是可以与其他步骤或者其他步骤的子步骤或者阶段的至少一部分轮流或者交替地执行。
以上仅是本申请的部分实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本申请的保护范围。

Claims (26)

  1. 一种数据传输方法，应用于远端用户设备(UE)，所述方法包括：
    确定触发发现、选择和/或重选中继UE时的第一测量信息；
    上报所述第一测量信息至网络设备。
  2. 根据权利要求1所述的数据传输方法，其中，所述第一测量信息包括信道质量相关信息、终端设备相关信息、连接时长相关信息以及触发重选中继UE的原因中的一种或多种。
  3. 根据权利要求2所述的数据传输方法，其中，所述信道质量相关信息包括以下一种或多种：
    所述远端UE的Uu链路信道质量；
    所述远端UE与所选择的中继UE之间的第一PC5链路信道质量；
    所述远端UE与触发重选时连接的中继UE之间的第二PC5链路信道质量；
    所述远端UE与所重选的中继UE之间的第三PC5链路信道质量；
    配置的触发发现的第一信道质量阈值；
    配置的选择/重选中继UE的第二信道质量阈值；
    配置的触发重选中继UE的第三信道质量阈值；
    所述第一信道质量阈值与所述Uu链路信道质量之间的差值；
    所述第二信道质量阈值与所述第一PC5链路信道质量或所述第三PC5链路信道之间的差值；
    所述第三信道质量阈值与所述第二PC5链路信道质量或所述第三PC5链路信道质量之间的差值；
    选择的中继UE的Uu链路信道质量；
    重选的中继UE的Uu链路信道质量。
  4. 根据权利要求2所述的数据传输方法，其中，所述终端设备相关信息包括以下一种或多种：
    选择的中继UE的标识信息和/或位置信息；
    重选的中继UE的标识信息和/或位置信息；
    所述远端UE的标识信息和位置信息。
  5. 根据权利要求2所述的数据传输方法，其中，所述连接时长相关信息包括以下一种或多种：
    所述远端UE与选择的中继UE进行PC5连接的时长；
    所述远端UE与重选的中继UE进行PC5连接的时长。
  6. 根据权利要求3所述的数据传输方法，其中，所述触发重选中继UE的原因，包括以下一种或多种：
    与已建立连接的中继UE之间的PC5链路信道质量低于所述第二信道质量阈值；
    与当前连接的中继UE之间的PC5连接由高层指示进行释放；
    当检测到当前PC5连接过程中发生无线链路失败RLF；
    由高层指示。
  7. 根据权利要求1所述的数据传输方法，还包括：
    当所述远端UE从PC5连接切换到Uu连接时，停止确定所述第一测量信息。
  8. 一种数据传输方法，应用于中继用户设备(UE)，所述方法包括：
    确定触发发现、与远端UE进行PC5连接、发生PC5无线链路失败(RLF)和/或发生Uu RLF时的第二测量信息；
    上报所述第二测量信息至网络设备。
  9. 根据权利要求8所述的数据传输方法，其中，所述第二测量信息包括信道质量相关信息、终端设备相关信息、RLF相关信息中的一种或多种。
  10. 根据权利要求9所述的数据传输方法，其中，所述信道质量相关信息包括以下一种或多种：
    触发发现时所述中继UE的Uu链路信道质量；
    建立PC5连接时与远端UE之间的PC5链路信道质量；
    网络侧配置的触发发现时的第四信道质量阈值和第五信道质量阈值，所述第四信道质量阈值低于所述第五信道质量阈值；
    在同时连接的远端UE的数量为最低数量时的第一平均PC5链路信道质量；
    在同时连接的远端UE的数量为最高数量时的第二平均PC5链路信道质量。
  11. 根据权利要求9所述的数据传输方法，其中，所述终端设备相关信息包括以下一种或多种：
    同时连接的远端UE的最低数量；
    同时连接的远端UE的最高数量。
  12. 根据权利要求9所述的数据传输方法，其中，所述RLF相关信息包括以下一种或多种：
    发生Uu RLF的次数；
    发生Uu RLF时中继UE的位置信息、与远端UE之间的PC5链路信道质量、Uu链路信道质量、同时连接的远端UE的数量、标识信息以及中继UE与远端UE进行PC5连接的时长中的一种或多种；
    发生PC5 RLF的次数；
    发生PC5 RLF时中继UE的位置信息、与远端UE之间的PC5链路信道质量、Uu链路信道质量、同时连接的远端UE的数量、标识信息以及远端UE与中继UE进行PC5连接的时长中的一种或多种。
  13. 根据权利要求8所述的数据传输方法，还包括：
    接收远端UE发送的上报请求，向所述远端UE上报所述中继UE的位置信息和Uu链路信道质量中的一种或多种。
  14. 一种远端用户设备(UE)，包括：
    第一测量信息确定模块，被配置为确定触发发现、选择和/或重选中继UE时的第一测量信息；
    第一测量信息上报模块，被配置为上报所述第一测量信息至网络。
  15. 根据权利要求14所述的远端UE，其中，所述第一测量信息包括信道质量相关信息、终端设备相关信息、连接时长相关信息以及触发重选中继UE的原因中的一种或多种。
  16. 根据权利要求14所述的远端UE，其中，所述第一测量信息确定模块还被配置为：当所述远端UE从PC5连接切换到Uu连接时，停止确定所述第一测量信息。
  17. 一种中继用户设备(UE)，包括：
    第二测量信息确定模块，被配置为确定触发发现、与远端UE进行PC5连接、发生PC5无线链路失败(RLF)和/或发生Uu RLF时的第二测量信息；
    第二测量信息上报模块，被配置为上报所述第二测量信息至网络设备。
  18. 根据权利要求17所述的中继UE，其中，所述第二测量信息包括信道质量相关信息、终端设备相关信息、RLF相关信息中的一种或多种。
  19. 根据权利要求17所述的中继UE，其中，所述第二测量信息上报模块还被配置为接收远端UE发送的上报请求，向所述远端UE上报所述中继UE的位置信息和Uu链路信道质量中的一种或多种。
  20. 一种用户设备(UE)，包括存储器，收发机和处理器：
    所述存储器被配置为存储计算机程序；
    所述收发机被配置为在所述处理器的控制下收发数据；
    所述处理器被配置为执行所述存储器中的计算机程序并实现如下操作：
    确定触发发现、选择和/或重选中继UE时的第一测量信息；
    上报所述第一测量信息至网络设备。
  21. 根据权利要求20所述的UE，其中，所述第一测量信息包括信道质量相关信息、终端设备相关信息、连接时长相关信息以及触发重选中继UE的原因中的一种或多种。
  22. 根据权利要求20所述的UE，其中，所述处理器还被配置为：当所述远端UE从PC5连接切换到Uu连接时，停止确定所述第一测量信息。
  23. 一种用户设备(UE)，包括存储器，收发机和处理器：
    所述存储器被配置为存储计算机程序；
    所述收发机被配置为在所述处理器的控制下收发数据；
    所述处理器被配置为执行所述存储器中的计算机程序并实现如下操作：
    确定触发发现、与远端UE进行PC5连接、发生PC5无线链路失败(RLF)和/或发生Uu RLF时的第二测量信息；
    上报所述第二测量信息至网络设备。
  24. 根据权利要求23所述的UE，其中，所述第二测量信息包括信道质量相关信息、终端设备相关信息、RLF相关信息中的一种或多种。
  25. 根据权利要求23所述的UE，其中，所述处理器还被配置为：接收远端UE发送的上报请求，向所述远端UE上报所述中继UE的位置信息和Uu链路信道质量中的一种或多种。
  26. 一种计算机可读存储介质，所述计算机可读存储介质存储计算机指令，所述计算机指令使所述计算机执行如权利要求1至13中任意一项所述数据传输方法的步骤。
PCT/CN2022/132574 2021-11-17 2022-11-17 数据传输方法、远端ue、中继ue及存储介质 WO2023088367A1 (zh)

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