WO2024067624A1 - 信息报告方法以及用户设备 - Google Patents

信息报告方法以及用户设备 Download PDF

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Publication number
WO2024067624A1
WO2024067624A1 PCT/CN2023/121678 CN2023121678W WO2024067624A1 WO 2024067624 A1 WO2024067624 A1 WO 2024067624A1 CN 2023121678 W CN2023121678 W CN 2023121678W WO 2024067624 A1 WO2024067624 A1 WO 2024067624A1
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Prior art keywords
information
spcr
pscell
pcell
pscell change
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PCT/CN2023/121678
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English (en)
French (fr)
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常宁娟
刘仁茂
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夏普株式会社
常宁娟
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Publication of WO2024067624A1 publication Critical patent/WO2024067624A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections

Definitions

  • the present disclosure relates to the field of wireless communication technology, and more specifically, to a method for reporting information related to primary and secondary cells in a dual-connection situation and a corresponding user equipment.
  • the present disclosure proposes a solution to the problem of how to implement PSCell information reporting in the NR system.
  • the purpose of the embodiments of the present disclosure is to propose a solution to the problem of how to implement PSCell information reporting in an NR system. More specifically, the present disclosure proposes a solution to the problem of how to record PSCell change information after successfully executing the PSCell change process when the UE is configured with dual connectivity (DC) in an NR system.
  • the embodiments of the present disclosure provide an information reporting method executed in a user equipment and a corresponding user equipment.
  • an information reporting method comprising: after a user equipment UE in dual connection successfully completes a primary and secondary cell PSCell change process, the UE triggers a record of a PSCell change report SPCR; the UE determines whether the PSCell change process is accompanied by a switching of a primary cell PCell; after determining that the PSCell change process is accompanied by a switching of a primary cell PCell; When it is determined that the PSCell change process is accompanied by the switching of the primary cell PCell, the UE includes first report information in the SPCR. When it is determined that the PSCell change process is not accompanied by the switching of the primary cell PCell, the UE includes second report information in the SPCR.
  • the first report information is target PCell information
  • the second report information is current PCell information
  • the first reporting information is a UE identifier C-RNTI for a target MCG or a target PCell
  • the second reporting information is a UE identifier C-RNTI for a current MCG or a current PCell.
  • the UE determines that the PSCell change process is accompanied by the PCell switching.
  • the PCell information includes one or more of a physical cell identifier PCI, a cell carrier frequency ARFCN, a global cell identifier GCI, and a tracking area code TAC.
  • the UE when the PSCell change command of the PSCell change process is received through SRB1, the UE includes the first report information or the second report information in the SPCR, and when the PSCell change command of the PSCell change process is received through SRB3, the UE does not include the first report information and the second report information in the SPCR.
  • the UE when the UE determines that the PSCell change process is initiated by the master base station MN, the UE includes the first report information or the second report information in the SPCR.
  • the UE determines whether to include the first report information or the second report information in the SPCR based on a corresponding SPCR configuration.
  • the UEInformationRequest when the UE receives a UEInformationRequest message from the network side, the UEInformationRequest When the message carries an indication/request for requesting the UE to report the stored SPCR, the UE includes the content of the stored SPCR in a UEInformationResponse message and sends it to the network side.
  • a user equipment UE comprising: a processor; and a memory storing instructions; wherein the instructions, when executed by the processor, execute the information reporting method according to the context.
  • FIG1 is a schematic flow chart showing an information reporting method in Embodiment 1 of the present disclosure.
  • FIG. 2 is a schematic flow chart showing an information reporting method in Embodiment 2 of the present disclosure.
  • FIG. 3 is a block diagram showing a user equipment UE involved in the present disclosure.
  • LTE Long Term Evolution
  • NR New Radio Access
  • Evolved Universal Terrestrial Radio Access Evolved Universal Terrestrial Radio Access Network
  • E-UTRA Evolved Universal Terrestrial Radio Access Network
  • the present disclosure involves changes in the primary cell PCell and changes in the primary and secondary cells PSCell.
  • the change in the primary cell PCell is also called switching.
  • the source primary cell may also be referred to as the source primary base station, or the source primary beam (beam), the source transmission point (Transmission point, TRP), the source primary cell (Primary Cell, PCell), the source primary cell group (Master Cell Group, MCG);
  • the target cell may also be referred to as the target base station, or the target beam, the target transmission point, the target primary cell PCell, the target primary cell group MCG.
  • the source PSCell may also be referred to as the source secondary base station, the source secondary cell group (Secondary Cell Group, SCG), the source beam (beam), the source transmission point (Transmission point, TRP) or the source cell;
  • the target PSCell may also be referred to as the target secondary base station, the target beam, the target transmission point, the target secondary cell group SCG or the target cell.
  • the switching command is used to trigger the UE to perform a switching
  • the PSCell change command is used to trigger the UE to perform a PSCell change.
  • it is an RRC reconfiguration message containing a synchronous reconfiguration (Reconfiguration with sync) information element.
  • the switching command is an RRC reconfiguration message containing a synchronous reconfiguration (Reconfiguration with sync) information element for MCG
  • the PSCell change command is an RRC reconfiguration message containing a synchronous reconfiguration (Reconfiguration with sync) information element for SCG.
  • the switching can also be called the synchronous reconfiguration of MCG or the synchronous reconfiguration of PCell
  • the PSCell change can also be called the synchronous reconfiguration of SCG or the synchronous reconfiguration of PSCell.
  • the synchronous reconfiguration information element may include the configuration information of the target cell, such as the target cell identifier, the target cell frequency, the public configuration of the target cell such as system information, the random access configuration used by the UE to access the target cell, the security parameter configuration of the UE in the target cell, the wireless bearer configuration of the UE in the target cell, etc.
  • Cancellation, release, deletion, clearing and clearing can be Replaceable. Execution, use and application are replaceable. Configuration and reconfiguration are replaceable. Monitoring (monitor) and detection (detect) are replaceable. PCell change and PSCell change are sometimes collectively referred to as cell change.
  • the RRC reconfiguration message for the cell change command carries the RRC configuration from the target base station, including but not limited to the following RRC configuration (see section 6.2.2 of 3GPP technical standard protocol 38.331 for details):
  • Measurement configuration used to configure the intra-frequency, inter-frequency and inter-RT measurements performed by the UE, such as measurement object configuration, measurement reporting configuration, measurement gap configuration, etc.
  • the -Cell group configuration (cellGroupConfig information element), used to configure the secondary cell group. It includes the radio link control (RLC) bearer configuration (rlc-bearerToAddModList information element and rlc-bearerToreleaselist information element) corresponding to the data radio bearer/signaling radio bearer, medium access control (MAC) configuration (MAC-cellgroupconfig information element), physical layer configuration, secondary cell addition/modification/release configuration, special cell (SpCell) configuration, etc.
  • the SpCell configuration includes the cell index number, cell change information (reconfigurationWithSync information element), radio link failure related timer and constant configuration, radio link detection (RLM) configuration, special cell dedicated configuration, etc.
  • the reconfigurationwithsync information element includes information related to the cell change, such as public information on the serving cell configuration, the Cell-Radio Network Temporary Identifier (C-RNTI) of the UE in the target cell, configuration of the cell change process monitoring timer T304, and special configuration for random access to the target cell.
  • C-RNTI Cell-Radio Network Temporary Identifier
  • Radio bearerConfig information element used to configure the service data application protocol layer (Service Data Application Protocol, SDAP) and Packet Data Convergence Protocol (Packet Data Convergence Protocol, PDCP).
  • UE establishes links with two base stations at the same time, that is, the wireless resources used by UE are provided by different schedulers located in the two base stations.
  • the wireless access between the two base stations and UE can be the same or different standards (Radio Access Technology, RAT), such as both are NR, or one is NR and the other is LTE, also known as Evolved Universal Terrestrial Radio Access (E-UTRA).
  • RAT Radio Access Technology
  • E-UTRA Evolved Universal Terrestrial Radio Access
  • MN master node
  • MgNB MgNB, MeNB
  • SgNB secondary node
  • SCG secondary cell group
  • the DC is called EN-DC (using 4G core network) or NGEN-DC (using 5G core network)
  • NR-DC NR-DC
  • MCG contains a primary cell (PCell) and one or more optional secondary cells (SCell).
  • PCell operates on the primary frequency, and the UE performs the initial connection establishment process or the connection re-establishment process through the primary frequency.
  • SCG contains a primary SCG cell (PSCell) and one or more optional SCells.
  • PSCell refers to the SCG cell to which the UE performs random access when performing the synchronous reconfiguration process of the SCG.
  • PCell and PSCell are also collectively referred to as special cells SpCell.
  • DC When DC is configured, DRB and SRB of the UE are supported to be configured as split bearers. When not configured as split SRB, SRB1 and SRB2 are transmitted through the MCG path.
  • SRB3 can also be established for the SN to transmit the configuration associated with the SCG between the SN and the UE. The establishment and release of SRB3 are determined by the SN.
  • the change of PSCell can be initiated by MN or SN.
  • MN or SN can initiate the change of PSCell based on the measurement results of source PSCell or neighboring cells reported by UE or the load of neighboring cells. (regardless of whether it is initiated by the MN or the SN), the cell change command for the PSCell is included in the RRC reconfiguration message of SRB1 and sent to the UE.
  • the PSCell change command is an RRC reconfiguration message for the SCG. When sent to the UE via the MCG link, it is generally included in the mrdc-SecondaryCellGroupConfig information element or the nr-SecondaryCellGroupConfig information element and nested in the RRC reconfiguration message of SRB1.
  • the SN can autonomously generate the RRC reconfiguration message of the PSCell change command and send it to the UE via SRB3 of the SCG link.
  • the UE that receives the PSCell change command immediately applies the configuration of the cell change command to perform the PSCell change, including the random access process to the PSCell.
  • the UE uses a timer T304 to detect the cell change process. When the cell change process is initiated, the UE starts the T304 timer; when the cell change process is completed (the random access process is successfully completed), the UE stops the timer T304; when T304 times out, the UE considers that the PSCell change has failed or the synchronization reconfiguration has failed.
  • the reporting of SCG failure information is implemented through the SCG failure information process.
  • SCG failure includes the following situations: monitoring the RLF of the SCG, monitoring the beam failure of the PSCell when the SCG is deactivated, the synchronization reconfiguration failure of the SCG, the SCG configuration failure, and the receipt of the integrity check failure indication associated with the SRB3 from the bottom layer.
  • the UE usually suspends the SCG transmission, resets the SCG MAC entity, stops the running timer T304, and sends an RRC message of SCG failure information SCGFailureInformation to the network side through the MCG link.
  • SCGFailureInformation the MCG can send an RRC message containing the synchronization reconfiguration of the SCG to the UE, trigger the change of the PSCell, and restore the SCG link; or send an RRC message containing the release SCG link indication to the UE to release the SCG.
  • the network side can also use the information in SCGFailureInformation for SCG mobility optimization.
  • the information in SCGFailureInformation includes: failure type, measurement results corresponding to the measurement configuration associated with the SCG, measurement results corresponding to the measurement configuration associated with the MCG, location information, failed PSCell identifier failedPSCellId, previous PSCell identifier previousPSCellId, timeSCGFailure indicating the time elapsed from the receipt of the RRC reconfiguration message of the most recent SCG synchronous reconfiguration, and information related to the random access process performed perRAInfoList.
  • the handover information report upon successful handover is introduced in the NR system of version 17.
  • handover refers to a PCell change or a synchronous reconfiguration of a PCell.
  • the handover command refers to an RRC reconfiguration message containing a synchronous reconfiguration information element for the MCG.
  • the handover information report upon successful handover is also referred to as a successful handover report (SHR).
  • SHR successful handover report
  • the content of the SHR may include one or more of the following: the source cell identifier of the handover; the target cell identifier of the handover; the measurement results of the source cell or target cell of the handover; the neighbor cell measurement results; the reason why the SHR is triggered (i.e., which trigger condition is met), etc.
  • the handover success includes the successful sending of the RRC reconfiguration completion message for responding to the handover command RRC reconfiguration message to the target base station or the successful completion of the random access process to the target base station by the MAC layer.
  • the network side needs to configure the trigger conditions for the successful switching report to the UE (such as the threshold values corresponding to T310, T312, and T304).
  • the UE Only when one or more of the configured trigger conditions are met (such as the operating value of T310 or T312 of the source cell exceeds the configured corresponding threshold value when the switching command is received, and the operating value of T304 exceeds the configured corresponding threshold value when the switching is successfully completed), the UE will record the switching information of the successful switching.
  • the trigger conditions related to the source cell such as the T310 threshold value or the T312 threshold value
  • the trigger conditions related to the target cell such as the T304 threshold value
  • the UE can inform the network side through an RRC message that there is an available successful switching report (such as indicated by the successHO-InfoAvailable information element).
  • the UE After receiving the indication, the network side, The UE can be requested to report its saved successful handover information report through an RRC message (such as the successHO-ReportReq indication in the UE information request UEInformationRequest message).
  • the UE will report the saved radio link failure report (successHO-Report in the UE information response UEInformationResponse message) to the network side in the response RRC message. This process is called the UE information process.
  • the successful handover report saved on the UE can be saved for up to 48 hours.
  • the SHR mechanism for PCell switching is standardized in the NR system of version 17 to further optimize the mobility robustness in the switching scenario.
  • One of the research goals in version 18 is to introduce a PSCell change report (Successful PSCell Change Report, SPCR) in the PSCell change scenario, and to report the information of the successful PSCell change process to the network side, so that the network side can optimize and adjust the parameters of the PSCell change to improve the mobility robustness of the PSCell.
  • PSCell change report Sauccessful PSCell Change Report, SPCR
  • the reporting process of SPCR is similar to SHR, that is, if the UE that has successfully executed the PSCell change process determines to generate an SPCR, the UE saves the content of the generated SPCR in the corresponding UE variable, and indicates to the network side through the RRC message that there is a saved SPCR on it; after receiving the request from the network side to instruct it to report the SPCR, the UE reports the saved SPCR to the network side including it in the RRC message.
  • the MN also participates in the process. Then in the network optimization process corresponding to the successful PSCell change report, in addition to delivering the SPCR to the SN, there is also the possibility of delivering the SPCR to the MN so that the MN participates in the mobility robustness optimization process of the PSCell.
  • the UE connected to the master base station MN1 successfully performs the change from PSCell1 to PSCell2, generates and saves the SPCR for the PSCell change time. Shortly after the PSCell change is successful, the UE's radio link fails in PSCell2. (Radio Link Failure, RLF).
  • RLF Radio Link Failure
  • the UE sends SCGFailureInformation information to the current main base station MN1 to inform MN1 of the failure event. If the UE has not reported the previously stored SPCR to MN1 before, there is a possibility that the UE reports the SPCR to the network side later, and the MN connected when the UE reports the SPCR has been changed to another base station MN2.
  • MN2 needs to deliver the received SPCR to the relevant base station MN1.
  • the UE first performs a successful PSCell change and RLF occurs on the target PSCell shortly afterwards. In fact, this should be an event of unsuccessful PSCell change.
  • MN1 will receive two reports for the same event, one is the failure report in SCGFailureInformation, and the other is SPCR. In fact, this event should be an event of premature PSCell change or PSCell change to the wrong cell, that is, the SPCR report itself cannot indicate that the PSCell change is successful.
  • MN1 needs to be able to associate the two reports after receiving them, so as to determine that the two reports are for the same PSCell change event of the same UE.
  • MN1 received the two reports at different times, and the SPCR was forwarded by another site MN2. How MN associates the two reports based on the information carried in the two reports and makes a judgment has also become a problem of concern in this disclosure.
  • This embodiment provides an information reporting method performed on a UE.
  • the UE can determine whether to carry the PCell information in the successful PSCell change report SPCR to report to the network side based on whether the PSCell change is accompanied by a PCell change.
  • the PCell information included in the SPCR by the UE enables the base station that retrieves the SPCR from the UE to deliver the SPCR to the correct PCell base station (i.e., the aforementioned MN) based on the PCell information carried in the SPCR.
  • the MN can adjust and optimize the PSCell change parameters based on the information in the received SPCR.
  • Fig. 1 is a schematic flow chart showing the information reporting method in the embodiment 1 of the present disclosure. As shown in Fig. 1 , the information reporting method in the embodiment 1 of the present disclosure may include the following steps.
  • Step 101 After successfully completing a PSCell change process, the UE triggers the recording of the SPCR, that is, the UE determines to save the SPCR information corresponding to the PSCell change process in the corresponding UE variable.
  • the successful completion of a PSCell change process usually refers to the successful completion of the random access process triggered during the synchronous reconfiguration process of the PSCell/SCG, or the response message for responding to the PSCell change command, i.e., the RRC reconfiguration completion message including the synchronous reconfiguration of the SCG, has been sent.
  • the UE triggers the recording of the SPCR, similar to the SHR mechanism in version 17, and the UE triggers the recording of the SPCR when the configured SPCR trigger condition is met. That is, the UE determines whether to save the SPCR information corresponding to the process based on whether the trigger condition in the SPCR configuration is met.
  • the trigger condition can be the T310 threshold value for the PSCell, the T312 threshold value for the PSCell, or the T304 threshold value for the SCG.
  • the threshold value is a percentage threshold value.
  • the UE determines to save the SPCR information corresponding to the process.
  • Step 102 The UE determines whether the PSCell change process is accompanied by the switching of the main cell PCell. If so, the UE includes the target PCell information in the saved SPCR information; if not, the UE includes the current PCell information in the saved SPCR information, that is, the main cell PCell information associated before performing the synchronous reconfiguration of the PSCell when receiving the PSCell change command.
  • Whether the PSCell change process is accompanied by the switching of the primary cell PCell refers to whether the RRC message used to trigger the PSCell change contains both the synchronous reconfiguration for SCG and the synchronous reconfiguration for MCG reconfiguration with Sync information elements.
  • the RRC message triggers both the PSCell change and the PCell switch, that is, the PSCell change process is accompanied by the switching of the PCell.
  • the target PCell refers to the cell corresponding to the cell identifier included in the synchronization reconfiguration information element for MCG.
  • the PCell information is a cell identifier corresponding to the PCell, such as one or more of a physical cell identifier (PCI), an absolute radio frequency channel number (ARFCN), a global cell identifier (GCI), and a tracking area code (TAC).
  • PCI physical cell identifier
  • ARFCN absolute radio frequency channel number
  • GCI global cell identifier
  • TAC tracking area code
  • the PCell information also includes a measurement result of the PCell, i.e., information used to characterize the downlink signal quality of the PCell.
  • the measurement result is the latest measurement result obtained by the UE before performing synchronous reconfiguration of the PSCell upon receiving a PSCell change command.
  • the UE when the PSCell change command is received through SRB1, the UE includes its PCell information in the saved SPCR information.
  • the PSCell change command is received through SRB1, which means that the RRC reconfiguration message for synchronous reconfiguration of the PSCell is included in the mrdc-SecondaryCellGroup and received through SRB1.
  • the PSCell change command when the PSCell change command is received through SRB3, the UE does not include its PCell information in the saved SPCR information.
  • the UE when the UE determines that the PSCell change process is initiated by the MN, the UE includes the corresponding PCell information in the saved SPCR information. The UE determines whether the PSCell change process is initiated by the MN based on the first indication received from the network side.
  • the first indication is used to indicate whether the PSCell change process is initiated by the MN. For example, if the first indication is set to MN, the UE considers that the PSCell change process is initiated by the MN.
  • the first indication can be included in the corresponding PSCell change command, or in the outer RRC reconfiguration message of the PSCell change command, that is, the first indication is set by the MN and included in the RRC reconfiguration message.
  • the UE determines whether to include the corresponding PCell information in the stored SPCR information based on the corresponding SPCR configuration.
  • both the MN and the SN can configure the SPCR configuration of the UE.
  • the UE determines whether to include the corresponding PCell information in the stored SPCR information based on the corresponding SPCR configuration.
  • both the MN and the SN can configure the SPCR configuration of the UE.
  • the UE includes the corresponding PCell information in the SPCR.
  • the UE when the UE generates the SPCR, if it is determined that the SPCR configuration corresponding to the triggering cause of the SPCR is configured by the MN, the UE includes the corresponding PCell information in the SPCR.
  • the UE also includes receiving a PSCell change command from the network side, and applying the command to perform synchronous reconfiguration of the PSCell.
  • this embodiment may also be applicable to the case of adding a PSCell, that is, the PSCell change may also be a PSCell addition.
  • this embodiment may also be applicable to the case of conditional PSCell change (CPC), also known as conditional reconfiguration for SCG.
  • CPC conditional PSCell change
  • This embodiment provides an information reporting method.
  • the UE can carry the C-RNTI for MCG in the successful PSCell change report SPCR and report it to the network side.
  • the C-RNTI for MCG and other information (such as source PSCell identifier, target PSCell identifier) included in the SPCR by the UE enables the base station that retrieves the SPCR from the UE to associate the C-RNTI and other information carried in the SPCR with the corresponding information in the SCGFailureInformation associated with the C-RNTI (such as source PSCell identifier, target PSCell identifier, and failure type set to synchronous reconfiguration failure), and determine that the SPCR report and the SCGFailureInformation are associated with the same PSCell change event of the same UE.
  • the network side can determine that the PSCell change event is an event in which the PSCell changes too early or the PSCell changes to the wrong cell, and is not a successful PSCell change, and thereby perform more accurate adjustment and optimization of the mobility parameters of the PSCell change.
  • Fig. 2 is a schematic flow chart showing the information reporting method in the embodiment 2 of the present disclosure. As shown in Fig. 2, the information reporting method in the embodiment 2 of the present disclosure may include the following steps.
  • Step 201 After successfully completing a PSCell change procedure, the UE triggers the SPCR The record indicates that the UE determines to save the SPCR information corresponding to the PSCell change process in the corresponding UE variable.
  • the successful completion of a PSCell change process usually refers to the successful completion of the random access process triggered during the synchronous reconfiguration process of the PSCell/SCG, or the response message for responding to the PSCell change command, i.e., the RRC reconfiguration completion message including the synchronous reconfiguration of the SCG, has been sent.
  • the UE triggers the recording of the SPCR, similar to the SHR mechanism in version 17, and the UE triggers the recording of the SPCR when the configured SPCR trigger condition is met. That is, the UE determines whether to save the SPCR information corresponding to the process based on whether the trigger condition in the SPCR configuration is met.
  • the trigger condition can be the T310 threshold value for the PSCell, the T312 threshold value for the PSCell, or the T304 threshold value for the SCG.
  • the threshold value is a percentage threshold value.
  • the UE determines to save the SPCR information corresponding to the process.
  • Step 202 The UE includes the UE identifier C-RNTI for MCG, or the C-RNTI for PCell, in the saved SPCR information.
  • the UE determines whether the PSCell change process is accompanied by the switching of the primary cell PCell. If so, the UE includes the UE identifier C-RNTI for the target MCG or target PCell in the saved SPCR information; if not, the UE includes the C-RNTI for the current MCG or PCell in the saved SPCR information, that is, the C-RNTI corresponding to the MCG or PCell associated before performing the synchronous reconfiguration of the PSCell upon receiving the PSCell change command.
  • Whether the PSCell change process is accompanied by the switching of the primary cell PCell refers to whether the RRC message used to trigger the PSCell change contains both the synchronous reconfiguration for SCG and the synchronous reconfiguration for MCG reconfigurationWithSync information elements. If the RRC message used to trigger the PSCell change contains both the synchronous reconfiguration for SCG and the synchronous reconfiguration for MCG reconfigurationWithSync information elements, it is considered that the RRC message triggers the PSCell change and the PCell switching at the same time, that is, the PSCell change process is accompanied by the switching of the PCell.
  • the C-RNTI for the target MCG or target PCell refers to the C-RNTI included in the synchronization reconfiguration information element for the MCG.
  • the UE when the PSCell change command is received through SRB1, the UE includes its C-RNTI for MCG in the saved SPCR information.
  • the PSCell change command is received through SRB1, which means that the RRC reconfiguration message for synchronous reconfiguration of the PSCell is included in the mrdc-SecondaryCellGroup and received through SRB1.
  • the UE when the PSCell change command is received through SRB3, the UE does not include its C-RNTI for MCG in the saved SPCR information.
  • the UE when the UE determines that the PSCell change process is initiated by the MN, the UE includes the C-RNTI for the MCG in the saved SPCR information. The UE determines whether the PSCell change process is initiated by the MN based on the first indication received from the network side.
  • the first indication is used to indicate whether the PSCell change process is initiated by the MN. For example, if the first indication is set to MN, the UE considers that the PSCell change process is initiated by the MN.
  • the first indication can be included in the corresponding PSCell change command, or in the outer RRC reconfiguration message of the PSCell change command, that is, the first indication is set by the MN and included in the RRC reconfiguration message.
  • the UE determines whether the C-RNTI for the MCG is included in the saved SPCR information based on the corresponding SPCR configuration.
  • both the MN and the SN can configure the SPCR configuration of the UE.
  • the UE determines whether the C-RNTI for the MCG is included in the saved SPCR information based on the corresponding SPCR configuration.
  • both the MN and the SN can configure the SPCR configuration of the UE.
  • the UE determines whether the C-RNTI for the MCG is included in the saved SPCR information based on the corresponding SPCR configuration.
  • both the MN and the SN can configure the SPCR configuration of the UE.
  • the UE determines whether the C-RNTI for the MCG is included in the saved SPCR information based on the corresponding SPCR configuration.
  • both the MN and the SN can configure the SPCR configuration of the UE.
  • the UE determines whether the C-RNTI for the MCG is included in the saved SPCR information based on the corresponding S
  • the UE also includes receiving a PSCell change command from the network side, and applying the command to perform synchronous reconfiguration of the PSCell.
  • this embodiment may also be applicable to the case of PSCell addition, that is, the PSCell change may also be PSCell addition.
  • this embodiment may also be applicable to the case of conditional PSCell change (CPC), also known as conditional reconfiguration for SCG.
  • CPC conditional PSCell change
  • This embodiment provides a method for reporting PSCell change information executed on a UE.
  • the UE can report relevant information to the base station in the SPCR to provide more accurate PSCell change information to the network side.
  • This embodiment provides a method for the signaling process when the UE reports the information report described in Embodiment 1 and Embodiment 2 through the RRC process.
  • Step 301 The UE receives a UEInformationRequest message from the network side, which carries an indication/request for requesting the UE to report a stored SPCR.
  • Step 302 The UE includes the content of the stored SPCR in a UEInformationResponse message and sends the UEInformationResponse message to the network side.
  • the SPCR report included in the UEInformationResponse message includes at least the PCell related information in the above-mentioned embodiment 1 or the C-RNTI information for MCG in embodiment 2.
  • This embodiment provides a method for reporting PSCell change information, wherein the UE reports the stored SPCR only to the site associated with the information in the SPCR, thereby avoiding signaling overhead caused by unnecessary SPCR reporting.
  • the UE sends a second indication to the network side, and the second indication is used to indicate that there is an available SPCR saved on the UE.
  • the network side determines that there is a relevant SPCR on the UE based on the indication, and thereby obtains the SPCR from the UE through the UEInformation process (as described in Example 3).
  • the current serving cell of the UE is the PCell of the UE (in the PSCell change scenario accompanied by the PCell change, it refers to the target PCell or the source PCell).
  • the judgment that the current serving cell of the UE is consistent with the cell corresponding to the PSCell change event associated with the information in the SPCR may be made by the UE based on whether the identifier of the current serving cell is the same as the relevant cell identifier recorded in the SPCR.
  • FIG3 is a block diagram of the user equipment UE involved in the present invention.
  • the user equipment UE50 includes a processor 501 and a memory 502.
  • the processor 501 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc.
  • the memory 502 may include, for example, a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memories, etc.
  • Program instructions are stored on the memory 502. When the instructions are executed by the processor 501, various methods such as the above-mentioned mobile information reporting method described in detail in the present invention may be executed.
  • the method of the present invention and the equipment involved have been described above in conjunction with the preferred embodiments. It will be appreciated by those skilled in the art that the method shown above is exemplary only. The method of the present invention is not limited to the steps and sequence shown above.
  • the base station and user equipment shown above may include more modules, for example, modules that can be developed or developed in the future and can be used for base stations, MMEs, or UEs, etc.
  • the various identifiers shown above are exemplary only and not restrictive, and the present invention is not limited to the specific information elements that are examples of these identifiers. Those skilled in the art may make many changes and modifications based on the teachings of the illustrated embodiments.
  • the program running on the device may be a program that enables a computer to implement the functions of the embodiments of the present disclosure by controlling a central processing unit (CPU).
  • the program or the information processed by the program may be temporarily stored in a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memory. system.
  • the program for realizing the functions of each embodiment of the present disclosure can be recorded on a computer-readable recording medium.
  • the corresponding functions can be realized by making a computer system read the program recorded on the recording medium and executing these programs.
  • the so-called "computer system” herein can be a computer system embedded in the device, and can include an operating system or hardware (such as a peripheral device).
  • "Computer-readable recording medium” can be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium of a short-term dynamic storage program, or any other recording medium readable by a computer.
  • circuits e.g., monolithic or multi-chip integrated circuits.
  • Circuits designed to perform the functions described in this specification may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above devices.
  • DSPs digital signal processors
  • ASICs application-specific integrated circuits
  • FPGAs field programmable gate arrays
  • the general-purpose processor may be a microprocessor, or any existing processor, controller, microcontroller, or state machine.
  • the above circuits may be digital circuits or analog circuits. In the case where new integrated circuit technologies have emerged to replace existing integrated circuits due to advances in semiconductor technology, one or more embodiments of the present disclosure may also be implemented using these new integrated circuit technologies.
  • present disclosure is not limited to the above-mentioned embodiments. Although various examples of the embodiments have been described, the present disclosure is not limited thereto.
  • Fixed or non-mobile electronic devices installed indoors or outdoors can be used as terminal devices or communication devices, such as AV equipment, kitchen equipment, cleaning equipment, air conditioners, office equipment, vending machines, and other household appliances.

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Abstract

本公开提供了一种信息报告方法以及用户设备。信息报告方法包括：处于双连接的用户设备UE在成功完成主辅小区PSCell变更过程后，所述UE触发PSCell变更报告SPCR的记录；所述UE判断所述PSCell变更过程是否伴随着主小区PCell的切换；在判断出所述PSCell变更过程伴随着主小区PCell的切换的情况下，所述UE在所述SPCR中包含第一报告信息，在判断出所述PSCell变更过程没有伴随着主小区PCell的切换的情况下，所述UE在所述SPCR中包含第二报告信息。

Description

信息报告方法以及用户设备 技术领域
本公开涉及无线通信技术领域，更具体地，本公开涉及双连接情况下的主辅小区相关信息的信息报告方法以及对应的用户设备。
背景技术
2021年12月，在第三代合作伙伴计划(3rd Generation Partnership Project：3GPP)RAN#94e次全会上批准了一个Release 18技术标准的新的研究项目(参见非专利文献：RP-213553：New WID on further enhancement of data collection for SON(Self-Organising Networks)/MDT(Minimization of Drive Tests)in NR and EN-DC)。这个项目的研究目的是对基于版本17的NR系统中的网络数据收集过程进行进一步增强，以更好地实现自组织自优化网络以及最小化路测的目的。其中研究的具体技术之一是实现主辅小区(Primary Secondary cell group Cell，PSCell)成功变更场景下的信息报告。
本公开针对在NR系统中如何实现PSCell的信息报告问题提出解决方法。
发明内容
本公开实施例的目的在于如何实现在NR系统中PSCell信息报告的问题提出解决方法。更具体地，本公开针对在NR系统中如何在UE配置了双连接(Dual Connectivity，DC)时在成功执行了PSCell变更过程后的PSCell变更信息记录问题提出了解决方法。本公开实施例提供了在用户设备中执行的信息报告方法以及相应的用户设备。
根据本公开的第一方面，提出了一种信息报告方法，包括：处于双连接的用户设备UE在成功完成主辅小区PSCell变更过程后，所述UE触发PSCell变更报告SPCR的记录；所述UE判断所述PSCell变更过程是否伴随着主小区PCell的切换；在判断出所述PSCell变更过 程伴随着主小区PCell的切换的情况下，所述UE在所述SPCR中包含第一报告信息，在判断出所述PSCell变更过程没有伴随着主小区PCell的切换的情况下，所述UE在所述SPCR中包含第二报告信息。
在上述第一方面的信息报告方法中，优选地，所述第一报告信息是目标PCell信息，所述第二报告信息是当前PCell信息。
在上述第一方面的信息报告方法中，优选地，所述第一报告信息是用于目标MCG或目标PCell的UE标识C-RNTI，所述第二报告信息用于当前MCG或当前PCell的UE标识C-RNTI。
在上述第一方面的信息报告方法中，优选地，在用于触发PSCell变更的RRC消息中同时包含了用于SCG的同步重配置和用于MCG的同步重配置时，所述UE判断出所述PSCell变更过程伴随着所述PCell切换。
在上述第一方面的信息报告方法中，优选地，所述PCell信息包含物理小区标识PCI、小区载波频率ARFCN、全局小区标识GCI、跟踪区域码TAC的一种或多种。
在上述第一方面的信息报告方法中，优选地，在所述PSCell变更过程的PSCell变更命令是通过SRB1接收时，所述UE在所述SPCR中包含所述第一报告信息或者所述第二报告信息，在所述PSCell变更过程的PSCell变更命令是通过SRB3接收时，所述UE不在所述SPCR中包含所述第一报告信息以及所述第二报告信息。
在上述第一方面的信息报告方法中，优选地，在所述UE判断出所述PSCell变更过程是由主基站MN发起时，所述UE在所述SPCR中包含所述第一报告信息或者所述第二报告信息。
在上述第一方面的信息报告方法中，优选地，所述UE基于对应的SPCR配置来确定是否在所述SPCR中包含所述第一报告信息或者所述第二报告信息。
在上述第一方面的信息报告方法中，优选地，在所述UE收到来自网络侧的UEInformationRequest消息，所述UEInformationRequest 消息携带了用于请求所述UE上报所保存的所述SPCR的指示/请求的情况下，所述UE将所保存的所述SPCR中的内容包含在UEInformationResponse消息中，并向网络侧发送。
根据本公开的第二方面，提出了一种用户设备UE，包括：处理器；以及存储器，存储有指令；其中，所述指令在由所述处理器运行时执行根据上下文所述的信息报告方法。
附图说明
为了更完整地理解本公开及其优势，现在将参考结合附图的以下描述，其中：
图1是表示本公开的实施例1中的信息报告方法的示意流程图。
图2是表示本公开的实施例2中的信息报告方法的示意流程图。
图3是表示本公开所涉及的用户设备UE的框图。
在附图中，相同或相似的结构均以相同或相似的附图标记进行标识。
具体实施方式
根据结合附图对本公开示例性实施例的以下详细描述，本公开的其它方面、优势和突出特征对于本领域技术人员将变得显而易见。
在本公开中，术语“包括”和“含有”及其派生词意为包括而非限制；术语“或”是包含性的，意为和/或。
在本说明书中，下述用于描述本公开原理的各种实施例只是说明，不应该以任何方式解释为限制公开的范围。参照附图的下述描述用于帮助全面理解由权利要求及其等同物限定的本公开的示例性实施例。下述描述包括多种具体细节来帮助理解，但这些细节应认为仅仅是示例性的。因此，本领域普通技术人员应认识到，在不背离本公开的范围和精神的情况下，可以对本文中描述的实施例进行多种改变和修改。此外，为了清楚和简洁起见，省略了公知功能和结构的描述。此外，贯穿附图，相同参考数字用于相似功能和操作。
下文以长期演进系统(Long Term Evolution，LTE)/NR移动通信系统及其后续的演进版本作为示例应用环境，具体描述了根据本公开的多个实施方式。然而，需要指出的是，本公开不限于以下实施方式，而是可适用于更多其它的无线通信系统。若无特殊说明，在本公开中，小区和基站的概念可以互相替换；LTE系统也用于指代5G及其之后的LTE系统(如称为eLTE系统，或者可以连接到5G核心网的LTE系统)，同时LTE可以用演进的通用陆地无线接入(Evolved Universal Terrestrial Radio Access，E-UTRA)或演进的通用陆地无线接入网E-UTRAN来替换。在本公开中涉及主小区PCell变更和主辅小区PSCell的变更。其中，主小区PCell变更也称切换。源主小区也可称为源主基站，或称源主光束(beam)、源传输点(Transmission point，TRP)，源主小区(Primary Cell，PCell)，源主小区组(Master Cell Group，MCG)；目标小区也可称为目标基站，或目标光束、目标传输点，目标主小区PCell，目标主小区组MCG。源PSCell也可称为源辅基站、源辅小区组(Secondary Cell Group，SCG)、称源光束(beam)、源传输点(Transmission point，TRP)或源小区；目标PSCell也可称为目标辅基站、目标光束、目标传输点、目标辅小区组SCG或目标小区。本公开中切换命令用于触发UE执行切换，PSCell变更命令用于触发UE执行PSCell变更。在NR系统中是包含同步重配置(Reconfigurationwithsync)信息元素的RRC重配置消息，具体地，切换命令是包含用于MCG的同步重配置(Reconfigurationwithsync)信息元素的RRC重配置消息；PSCell变更命令是包含用于SCG的同步重配置(Reconfigurationwithsync)信息元素的RRC重配置消息。此时，切换也可称为MCG的同步重配置或PCell的同步重配置；PSCell变更也可称为SCG的同步重配置或PSCell的同步重配置。其中，所述同步重配置信息元素可以包含目标小区的配置信息，例如目标小区标识、目标小区频率、目标小区的公共配置如系统信息、UE接入到目标小区所使用的随机接入配置、UE在目标小区的安全参数配置、UE在目标小区的无线承载配置等。取消、释放、删除、清空和清除等可 以替换。执行、使用和应用可替换。配置和重配置可以替换。监测(monitor)和检测(detect)可替换。PCell变更和PSCell变更有时也统称小区变更。
下列描述了本公开涉及的现有技术中的过程或概念。
NR系统中的小区变更配置：
在NR系统中，用于小区变更命令的RRC重配置消息承载着来自目标基站的RRC配置，包含但不限于下述RRC配置(具体请参见3GPP技术标准协议38.331中的6.2.2章节)：
-测量配置：用于配置UE所执行的频率内、频率间和无线接入技术间的测量。如测量对象配置、测量上报配置、测量空隙(gap)配置等。
-小区组配置(cellGroupConfig信息元素)，用于配置辅小区组。包括数据无线承载/信令无线承载对应的无线链路控制(Radio Link Control，RLC)承载配置(rlc-bearerToAddModList信息元素和rlc-bearerToreleaselist信息元素)、媒介接入控制(Medium Access Control，MAC)配置(MAC-cellgroupconfig信息元素)、物理层配置、辅小区添加/修改/释放配置、特殊小区(Special cell，SpCell)配置等。其中，SpCell配置中包含小区索引号、小区变更信息(reconfigurationWithSync信息元素)、无线链路失败相关定时器及常数配置、无线链路检测(Radio Link Monitoring，RLM)配置、特殊小区专用配置等。其中reconfigurationwithsync信息元素包含小区变更相关信息如服务小区配置公共信息、UE在目标小区的小区无线网络临时标识(Cell-Radio Network Temprory Identifier，C-RNTI)、小区变更过程监控定时器T304配置、用于向目标小区随机接入过程的随机接入专用配置等。
-无线承载配置(radiobearerConfig信息元素)，用于配置数据无线承载(Data Radio Bearer，DRB)和/或信令无线承载(Signaling Radio Bearer，SRB)的服务数据应用协议层(Service Data  Application Protocol，SDAP)和包数据汇聚协议层(Packet Data Convergence Protocol，PDCP)。
-密钥更新配置。
双连接(Dual Connectivity)：
为了提高UE的数据传输效率，UE同时与两个基站建立链路，也就是UE所使用的无线资源由位于两个基站的不同调度器提供。这两个基站与UE之间的无线接入可以是相同或不同的制式(Radio Access Technology，RAT)，如都是NR，或一个是NR，一个是LTE也称演进的通用陆地无线接入(Evolved Universal Terrestrial Radio Access，E-UTRA)。在这两个基站中，一个称为主基站(Master Node，MN)或MgNB、MeNB，主基站下的服务小区组称为主小区组(Master Cell Group，MCG)；另一个称为辅基站(Secondary Node，SN)或SgNB、SeNB，辅基站下的服务小区组称为辅小区组(Secondary Cell Group，SCG)。当主基站是LTE，辅基站是NR时的DC称为EN-DC(使用4G核心网)或NGEN-DC(使用5G核心网)；当主基站和辅基站都是NR时的DC称为NR-DC。MCG包含一个主小区(Primary Cell，PCell)和可选的一个或多个辅小区(Secondary Cell，SCell)。PCell工作在主频率上，UE通过主频率执行初始连接建立过程或连接重建立过程。SCG包含一个主SCG小区(Primary SCG Cell，PSCell)和可选的一个或多个SCell。PSCell是指UE在执行SCG的同步重配置过程时执行随机接入的SCG小区。PCell和PSCell也统称为特殊小区SpCell。在配置了DC时，支持对UE的DRB和SRB配置为分裂承载(split bearer)。在未配置为split SRB时，SRB1和SRB2是通过MCG路径传输的。此外，在配置了DC时，也可以为SN建立SRB3，用于传输SN和UE之间与SCG关联的配置等。SRB3的建立和释放都是由SN来决定的。
NR系统中的PSCell变更过程：
PSCell的变更可以由MN发起，也可以由SN发起。MN或SN可以基于UE上报的对源PSCell或邻小区的测量结果或邻小区的负载等因素，来发起PSCell的变更。在有MN参与的PSCell变更过程中 (无论是MN发起还是SN发起的)，用于PSCell的小区变更命令包含在SRB1的RRC重配置消息中发给UE。PSCell变更命令是对于SCG的RRC重配置消息。当通过MCG链路发送给UE时，一般包含在mrdc-SecondaryCellGroupConfig信息元素或nr-SecondaryCellGroupConfig信息元素中并嵌套在SRB1的RRC重配置消息中。若PSCell的变更无需MN参与，如intra-SN的PSCell变更场景，此时SN可以自主生成PSCell变更命令的RRC重配置消息并通过SCG链路的SRB3发送给UE。
收到PSCell变更命令的UE立即应用该小区变更命令的配置执行PSCell变更，包含到PSCell的随机接入过程。UE通过一个定时器T304来检测小区变更过程，当小区变更过程发起时，UE开启T304定时器；当小区变更过程完成(随机接入过程成功完成)时，UE停止定时器T304；当T304超时，UE认为PSCell变更失败或同步重配置失败。
SCG失败信息上报
当前NR系统中对SCG失败的信息上报是通过SCG失败信息流程来实现的。当发生SCG失败时，若此时MCG和SCG传输都未被挂起(suspended)，UE会发起SCG失败信息流程向网络侧报告SCG的失败。SCG失败包括下述几种情况：监测到SCG的RLF、SCG处于去激活时监测到PSCell的波束失败、SCG的同步重配置失败、SCG配置失败和收到来自底层的SRB3相关联的完整性校验失败指示等。在SCG失败过程中，UE通常会挂起SCG传输、重置SCG MAC实体、停止正在运行的定时器T304，并通过MCG链路向网络侧发送SCG失败信息SCGFailureInformation的RRC消息。因为此时UE和MCG之间的连接是一般情况下，根据SCGFailureInformation中内容，MCG可以向UE发送包含SCG的同步重配置的RRC消息，触发PSCell的变更，恢复SCG链路；或者向UE发送包含释放SCG链路指示的RRC消息以释放SCG。此外，网络侧还可以基于SCGFailureInformation中的信息用于SCG移动性优化。R17版本中 SCGFailureInformation中的信息包括：失败类型、SCG相关联的测量配置所对应的测量结果、MCG相关联的测量配置所对应的测量结果、位置信息、失败PSCell标识failedPSCellId、前PSCell标识previousPSCellId、用于指示从收到最近一个SCG的同步重配置的RRC重配置消息所经历的时间timeSCGFailure和所执行的随机接入过程相关的信息perRAInfoList。
成功切换报告：
版本17的NR系统中引入成功切换时的切换信息报告。此处切换指的是PCell变更或PCell的同步重配置。切换命令指的是包含用于MCG的同步重配置信息元素的RRC重配置消息。成功切换时的切换信息报告也简称成功切换报告(Successful Handover Report，SHR)。这是因为，在NR系统中单靠已有机制中的无线链路失败RLF报告来执行网络优化可能会使得数据收集过程变得漫长，而在切换成功时切换信息报告使得网络侧能更快获得移动性过程中的足够样本数。其次，即使是对于成功的切换场景，其移动性参数还是有进一步优化的空间的。对于SHR的内容，可以包含下述一种或多种：切换的源小区标识；切换的目标小区标识；切换的源小区或目标小区的测量结果；邻居小区测量结果；指示SHR被触发的原因(即哪一个触发条件被满足)等。所述切换成功包括用于向目标基站响应切换命令RRC重配置消息的RRC重配置完成消息成功发送或者MAC层成功完成到目标基站的随机接入过程。网络侧需要向UE配置成功切换报告的触发条件(如T310、T312、T304对应的门限值)，只有当配置的一个或多个触发条件满足(如收到切换命令时源小区的T310或T312的运行值超过所配置的对应的门限值，切换成功完成时的T304的运行值超过了所配置的对应的门限值)时，UE才会记录所述成功切换的切换信息。其中，与源小区相关的触发条件如T310门限值或T312门限值由源小区配置给UE，与目标小区相关的触发条件如T304门限值由目标小区配置给UE。UE可以通过RRC消息告知网络侧其上有可用的成功切换报告(如successHO-InfoAvailable信息元素来指示)。网络侧在收到所述指示后， 可以通过RRC消息(如UE信息请求UEInformationRequest消息中的successHO-ReportReq指示)来请求UE上报其保存的成功切换信息报告。UE会在响应RRC消息中将所保存的无线链路失败报告(UE信息响应UEInformationResponse消息中的successHO-Report)上报给网络侧。该过程成为UE信息(UE information)过程。UE上保存的成功切换报告最多可以保存48小时。
如上所述，版本17的NR系统中标准化了对PCell切换时SHR机制以进一步对切换场景下的移动鲁棒性进行优化。而版本18中一个研究目标是引入对PSCell变更场景下的PSCell变更报告(Successful PSCell Change Report，SPCR)，通过向网络侧上报成功的PSCell变更过程的信息，使得网络侧能对PSCell变更的参数进行优化和调整，以提高PSCell的移动鲁棒性。在本公开中，假定SPCR的上报过程与SHR类似，即在成功执行了PSCell变更过程的UE若确定要生成一个SPCR，则UE在对应的UE变量中保存所生成的SPCR的内容，并通过RRC消息向网络侧指示其上有保存的SPCR；在收到网络侧的指示其上报SPCR的请求后，UE将所保存的SPCR包含在RRC消息中上报给网络侧。与切换场景不同的是，在PSCell变更场景下，除了源PSCell和目标PSCell的参与，在MN触发的SN修改过程或MN触发的SN变更过程中，除了源PSCell和目标PSCell的参与，MN也参与到了该过程中。那么在成功PSCell变更报告对应的网络优化过程中，除了将SPCR递送给SN外，还存在将SPCR递送给MN以使得MN参与到PSCell的移动鲁棒性优化过程中的可能性。那么在考虑MN参与PSCell的移动鲁棒性优化问题时，在PSCell变更同时伴随着PCell变更的场景下如何实现所述SPCR可以递送给相关的MN，成为本公开中所关注的一个问题。
此外，考虑下述场景：连接到主基站MN1的UE成功执行了从PSCell1到PSCell2的变更，生成并保存了对于该次PSCell变更时间的SPCR。PSCell变更成功后不久发生了UE在PSCell2的无线链路失败 (Radio Link Failure，RLF)。当发生PSCell2的RLF时，UE向当前的主基站MN1发送SCGFailureInformation信息以告知MN1此次失败事件。若此前UE尚未将之前存储的SPCR上报给MN1，那么存在一种可能性，UE在之后将SPCR上报给网络侧，而UE上报SPCR时所连接的MN已变更成另一个基站MN2。那么MN2需要将接收到的SPCR递送至相关基站MN1。在这种场景下，UE先执行了成功的PSCell变更随后不久在目标PSCell上又发生了RLF，实际上这应该是一个PSCell变更不成功的事件。对于这个事件，如上所述，MN1会收到针对同一个事件的两个报告，一个是SCGFailureInformation中的失败报告，一个是SPCR。实际上，这个事件应该是个PSCell变更过早或PSCell变更到错误小区事件，也就是说SPCR报告本身并不能指示这个PSCell变更是成功的。要达成这样的分析和结论，就需要MN1在收到上述两个报告后能够将这两个报告关联起来，从而判断这两个报告是针对同一个UE的同一次PSCell变更事件的。而在上述场景1中，MN1是在不同时刻收到了两个报告，且SPCR是通过另一个站点MN2转递收到的。MN如何基于这两个报告中携带的信息来将这两个报告关联起来进行判断也成为本公开所关注的一个问题。
下述各实施例基于上述问题给出解决方法，如无特殊说明，实施例之间并不是互斥的，实施例之间可以结合，或者一些概念或定义在各实施例之间是可以通用的。
实施例1
该实施例给出了一种在UE上执行的信息报告方法。通过该实施例所述方法，UE可以基于PSCell变更是否伴随着PCell的变更来确定是否在成功PSCell变更报告SPCR中携带PCell信息以上报给网络侧。UE在SPCR中包含的PCell信息，使得从UE上取回SPCR的基站可以根据SPCR中携带的PCell信息，将该SPCR递送给正确的PCell基站(即前述MN)。所述MN可以基于所收到的SPCR中的信息来进行PSCell变更参数的调整和优化。
以下，对本公开的实施例1进行详细说明。图1是表示本公开的实施例1中的信息报告方法的示意流程图，如图1所示，本公开的实施例1中的信息报告方法可以包含如下步骤。
步骤101：在成功完成一个PSCell变更过程后，UE触发了SPCR的记录，即UE确定在对应的UE变量中保存该PSCell变更过程对应的SPCR信息。
所述成功完成一个PSCell变更过程，通常指的是用于PSCell/SCG的同步重配置过程中所触发随机接入过程成功完成，或者用于响应PSCell变更命令即包含SCG的同步重配置的RRC重配置消息的响应消息即RRC重配置完成消息已发送。
可选地，UE触发了SPCR的记录，类似于版本17中的SHR机制，UE在所配置的SPCR触发条件满足时触发SPCR的记录。即UE根据SPCR配置中的触发条件是否满足来确定是否保存该过程对应的SPCR信息。举例来说，所述触发条件可以是用于PSCell的T310门限值、用于PSCell的T312门限值，或者用于SCG的T304门限值。在一种方式中，所述门限值是一个百分比例门限值。例如，当UE收到PSCell变更命令时执行PSCell的同步重配置前的源PSCell的T310的运行值与T310的配置值的比率超过了所配置的门限值时，UE确定保存该过程对应的SPCR信息。
步骤102：UE判断此次PSCell变更过程是否同时伴随着主小区PCell的切换，若是，则UE在所保存的SPCR信息中，包含目标PCell信息；若否，则UE在所保存的SPCR信息中，包含当前PCell的信息，即在收到PSCell变更命令时执行PSCell的同步重配置前所关联的主小区PCell信息。
所谓PSCell变更过程是否同时伴随着主小区PCell的切换，指的是用于触发PSCell变更的RRC消息中是否同时包含了用于SCG的同步重配置和用于MCG的同步重配置reconfigurationWithSync信息元素。用于触发PSCell变更的RRC消息中同时包含了用于SCG的同步重配置和用于MCG的同步重配置reconfigurationWithSync信息元素，则认 为所述RRC消息同时触发了PSCell变更和PCell切换，即PSCell变更过程伴随着PCell的切换。
所述目标PCell指的是用于MCG的同步重配置信息元素中所包含的小区标识所对应的小区。
优选地，所述PCell信息，是所述PCell对应的小区标识，如物理小区标识(Physical Cell Identity，PCI)、小区载波频率(Absolute Radio Frequency Channel Number，ARFCN)、全局小区标识(Global Cell Identity，GCI)、跟踪区域码(Tracking Area Code，TAC)的一种或多种。备选地，所述PCell信息还包括PCell的测量结果，即用于表征PCell下行链路信号质量的信息。可选地，所述测量结果是UE在收到PSCell变更命令时执行PSCell的同步重配置前所获得的最新的测量结果。
可选地，在一种实现方式1中，当所述PSCell变更命令是通过SRB1接收时，UE在所保存的SPCR信息中包含其PCell信息。可选地，所述PSCell变更命令是通过SRB1接收，指的是所述用于PSCell的同步重配置的RRC重配置消息是包含在mrdc-SecondaryCellGroup中通过SRB1接收的。在该实现方式中，当所述PSCell变更命令是通过SRB3接收时，UE不在所保存的SPCR信息中包含其PCell信息。
可选地，在一种实现方式2中，当UE判断所述PSCell变更过程是由MN发起时，UE在所保存的SPCR信息中包含对应的PCell信息。UE基于从网络侧接收到的第一指示来确定所述PSCell变更过程是否由MN发起。所述第一指示用于指示该PSCell变更过程是否是由MN发起的。例如，若所述第一指示设置为MN，则UE认为所述PSCell变更过程是由MN发起的。所述第一指示可以包含在对应的PSCell变更命令中，也可以包含在PSCell变更命令的外层RRC重配置消息中，即由MN设置该第一指示并包含在RRC重配置消息中。
可选地，在一种实现方式3中，UE基于对应的SPCR配置来确定是否在所保存的SPCR信息中包含对应的PCell信息。在该实现方式中，MN和SN都可以配置UE的SPCR配置。可选地，若只有MN或 SN其中的一方对UE配置了SPCR配置，那么UE在生成SPCR时，判断若所对应的SPCR配置是由MN配置的，则UE在SPCR中包含对应的PCell信息。可选地，UE在生成SPCR时，判断若触发SPCR的触发原因对应的SPCR配置是由MN配置的，则UE在SPCR中包含对应的PCell信息。
显然地，在步骤101之前还包括UE从网络侧接收PSCell变更命令，并应用该命令执行到PSCell的同步重配置。
可选地，该实施例也可适用于PSCell添加的情况，也就是说所述PSCell变更也可以是PSCell添加。
可选地，该实施例也可适用于条件PSCell变更(Conditional PSCell Change，CPC)的情况，也称用于SCG的条件重配置。
实施例2
该实施例给出了一种信息报告方法。通过该实施例所述方法，UE可以在成功PSCell变更报告SPCR中携带用于MCG的C-RNTI上报给网络侧。UE在SPCR中包含的用于MCG的C-RNTI及其他信息(如源PSCell标识、目标PSCell标识)，使得从UE上取回SPCR的基站可以根据SPCR中携带的C-RNTI及其他信息，和收到对应的与该C-RNTI相关联的SCGFailureInformation中的信息(如源PSCell标识、目标PSCell标识，设置为同步重配置失败的失败类型)进行关联，确定所述SPCR报告和所述SCGFailureInformation是关联到同一个UE的同一个PSCell变更事件的。从而网络侧可以确定所述PSCell变更事件是一个PSCell变更过早或PSCell变更到错误小区的事件，并不是一次成功的PSCell变更，并以此对PSCell变更的移动性参数执行更准确的调整和优化。
以下，对本公开的实施例2进行详细说明。图2是表示本公开的实施例2中的信息报告方法的示意流程图，如图2所示，本公开的实施例2中的信息报告方法可以包含如下步骤。
步骤201：在成功完成一个PSCell变更过程后，UE触发了SPCR 的记录，即UE确定在对应的UE变量中保存该PSCell变更过程对应的SPCR信息。
所述成功完成一个PSCell变更过程，通常指的是用于PSCell/SCG的同步重配置过程中所触发随机接入过程成功完成，或者用于响应PSCell变更命令即包含SCG的同步重配置的RRC重配置消息的响应消息即RRC重配置完成消息已发送。
可选地，UE触发了SPCR的记录，类似于版本17中的SHR机制，UE在所配置的SPCR触发条件满足时触发SPCR的记录。即UE根据SPCR配置中的触发条件是否满足来确定是否保存该过程对应的SPCR信息。举例来说，所述触发条件可以是用于PSCell的T310门限值、用于PSCell的T312门限值，或者用于SCG的T304门限值。在一种方式中，所述门限值是一个百分比例门限值。例如，当UE收到PSCell变更命令时执行PSCell的同步重配置前的源PSCell的T310的运行值与T310的配置值的比率超过了所配置的门限值时，UE确定保存该过程对应的SPCR信息。
步骤202：UE在所保存的SPCR信息中包含用于MCG的UE标识C-RNTI，或称用于PCell的C-RNTI。可选地，UE判断此次PSCell变更过程是否同时伴随着主小区PCell的切换，若是，则UE在所保存的SPCR信息中，包含用于目标MCG或目标PCell的UE标识C-RNTI；若否，则UE在所保存的SPCR信息中，包含用于当前MCG或PCell的C-RNTI，即在收到PSCell变更命令时执行PSCell的同步重配置前所关联的MCG或PCell对应的C-RNTI。
所谓PSCell变更过程是否同时伴随着主小区PCell的切换，指的是用于触发PSCell变更的RRC消息中是否同时包含了用于SCG的同步重配置和用于MCG的同步重配置reconfigurationWithSync信息元素。用于触发PSCell变更的RRC消息中同时包含了用于SCG的同步重配置和用于MCG的同步重配置reconfigurationWithSync信息元素，则认为所述RRC消息同时触发了PSCell变更和PCell切换，即PSCell变更过程伴随着PCell的切换。
所述用于目标MCG或目标PCell的C-RNTI指的是用于MCG的同步重配置信息元素中所包含的C-RNTI。
可选地，在一种实现方式1中，当所述PSCell变更命令是通过SRB1接收时，UE在所保存的SPCR信息中包含其用于MCG的C-RNTI。可选地，所述PSCell变更命令是通过SRB1接收，指的是所述用于PSCell的同步重配置的RRC重配置消息是包含在mrdc-SecondaryCellGroup中通过SRB1接收的。在该实现方式中，当所述PSCell变更命令是通过SRB3接收时，UE不在所保存的SPCR信息中包含其用于MCG的C-RNTI。
可选地，在一种实现方式2中，当UE判断所述PSCell变更过程是由MN发起时，UE在所保存的SPCR信息中包含用于MCG的C-RNTI。UE基于从网络侧接收到的第一指示来确定所述PSCell变更过程是否由MN发起。所述第一指示用于指示该PSCell变更过程是否是由MN发起的。例如，若所述第一指示设置为MN，则UE认为所述PSCell变更过程是由MN发起的。所述第一指示可以包含在对应的PSCell变更命令中，也可以包含在PSCell变更命令的外层RRC重配置消息中，即由MN设置该第一指示并包含在RRC重配置消息中。
可选地，在一种实现方式3中，UE基于对应的SPCR配置来确定是否在所保存的SPCR信息中包含用于MCG的C-RNTI。在该实现方式中，MN和SN都可以配置UE的SPCR配置。可选地，若只有MN或SN其中的一方对UE配置了SPCR配置，那么UE在生成SPCR时，判断若所对应的SPCR配置是由MN配置的，则UE在SPCR中包含用于MCG的C-RNTI。可选地，UE在生成SPCR时，判断若触发SPCR的触发原因对应的SPCR配置是由MN配置的，则UE在SPCR中包含用于MCG的C-RNTI。
显然地，在步骤201之前还包括UE从网络侧接收PSCell变更命令，并应用该命令执行到PSCell的同步重配置。
可选地，该实施例也可适用于PSCell添加的情况，也就是说所述PSCell变更也可以是PSCell添加。
可选地，该实施例也可适用于条件PSCell变更(Conditional PSCell Change，CPC)的情况，也称用于SCG的条件重配置。
实施例3
该实施例给出了一种在UE上执行的PSCell变更信息报告方法。通过该实施例所述方法，则UE可以在SPCR中将相关信息上报给基站，以向网络侧提供更精确的PSCell变更信息。该实施例给出了UE通过RRC过程上报实施例1和实施例2中所述信息报告时的信令流程的方法。
步骤301：UE收到来自网络侧的UEInformationRequest消息，其中携带了用于请求UE上报所保存的SPCR的指示/请求。
步骤302：UE将所保存的SPCR中的内容包含在UEInformationResponse消息中，向网络侧发送UEInformationResponse消息。所述UEInformationResponse消息中包含的SPCR报告中至少包含前述实施例1中的PCell相关信息或实施例2中的用于MCG的C-RNTI信息。
实施例4
该实施例给出了一种PSCell变更信息报告方法。其中，UE仅向SPCR中信息所关联的站点上报所保存的SPCR，从而避免不必要的SPCR上报而带来的信令开销。
在该实施例中，若UE上有保存的可用的SPCR，且UE当前的服务小区与SPCR中信息所关联的PSCell变更事件对应的小区一致的情况下，UE向网络侧发送第二指示，所述第二指示用于指示UE上有保存的可用的SPCR。网络侧基于所述指示确定UE上有相关的SPCR，从而通过UEInformation过程(如实施例3所述)从UE上获取所述SPCR。
所述UE当前的服务小区是UE的PCell(在伴随PCell变更的PSCell变更场景下指的是目标PCell或源PCell)，源PSCell和目标 PSCell中的一种或多种。SPCR中信息所关联的PSCell变更事件对应的小区指示的SPCR中所记录的PSCell变更事件中的源PSCell、目标PSCell、PSCell变更同时伴随PCell变更时的目标PCell或源PCell中的一种或多种。
所述UE当前的服务小区与SPCR中信息所关联的PSCell变更事件对应的小区一致的判断可以是UE基于当前的服务小区的标识与SPCR中所记录的相关小区标识是否相同来判断。
实施例5
该实施例对本公开的用户设备UE进行说明。图3是表示本发明所涉及的用户设备UE的框图。如图3所示，该用户设备UE50包括处理器501和存储器502。处理器501例如可以包括微处理器、微控制器、嵌入式处理器等。存储器502例如可以包括易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器等。存储器502上存储有程序指令。该指令在由处理器501运行时，可以执行本发明中详细描述的上述移动信息报告方法等的各种方法。
上文已经结合优选实施例对本公开的方法和涉及的设备进行了描述。本领域技术人员可以理解，上面示出的方法仅是示例性的。本公开的方法并不局限于上面示出的步骤和顺序。上面示出的基站和用户设备可以包括更多的模块，例如还可以包括可以开发的或者将来开发的可用于基站、MME、或UE的模块等等。上文中示出的各种标识仅是示例性的而不是限制性的，本公开并不局限于作为这些标识的示例的具体信元。本领域技术人员根据所示实施例的教导可以进行许多变化和修改。
运行在根据本公开的设备上的程序可以是通过控制中央处理单元(CPU)来使计算机实现本公开的实施例功能的程序。该程序或由该程序处理的信息可以临时存储在易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器 系统中。
用于实现本公开各实施例功能的程序可以记录在计算机可读记录介质上。可以通过使计算机系统读取记录在所述记录介质上的程序并执行这些程序来实现相应的功能。此处的所谓“计算机系统”可以是嵌入在该设备中的计算机系统，可以包括操作系统或硬件(如外围设备)。“计算机可读记录介质”可以是半导体记录介质、光学记录介质、磁性记录介质、短时动态存储程序的记录介质、或计算机可读的任何其他记录介质。
用在上述实施例中的设备的各种特征或功能模块可以通过电路(例如，单片或多片集成电路)来实现或执行。设计用于执行本说明书所描述的功能的电路可以包括通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、或其他可编程逻辑器件、分立的门或晶体管逻辑、分立的硬件组件、或上述器件的任意组合。通用处理器可以是微处理器，也可以是任何现有的处理器、控制器、微控制器、或状态机。上述电路可以是数字电路，也可以是模拟电路。因半导体技术的进步而出现了替代现有集成电路的新的集成电路技术的情况下，本公开的一个或多个实施例也可以使用这些新的集成电路技术来实现。
此外，本公开并不局限于上述实施例。尽管已经描述了所述实施例的各种示例，但本公开并不局限于此。安装在室内或室外的固定或非移动电子设备可以用作终端设备或通信设备，如AV设备、厨房设备、清洁设备、空调、办公设备、自动贩售机、以及其他家用电器等。
如上，已经参考附图对本公开的实施例进行了详细描述。但是，具体的结构并不局限于上述实施例，本公开也包括不偏离本公开主旨的任何设计改动。另外，可以在权利要求的范围内对本公开进行多种改动，通过适当地组合不同实施例所公开的技术手段所得到的实施例也包含在本公开的技术范围内。此外，上述实施例中所描述的具有相同效果的组件可以相互替代。

Claims (10)

  1. 一种信息报告方法，包括：
    处于双连接的用户设备UE在成功完成主辅小区PSCell变更过程后，所述UE触发PSCell变更报告SPCR的记录；
    所述UE判断所述PSCell变更过程是否伴随着主小区PCell的切换；
    在判断出所述PSCell变更过程伴随着主小区PCell的切换的情况下，所述UE在所述SPCR中包含第一报告信息，
    在判断出所述PSCell变更过程没有伴随着主小区PCell的切换的情况下，所述UE在所述SPCR中包含第二报告信息。
  2. 根据权利要求1所述的信息报告方法，其中，
    所述第一报告信息是目标PCell信息，所述第二报告信息是当前PCell信息。
  3. 根据权利要求1所述的信息报告方法，其中，
    所述第一报告信息是用于目标MCG或目标PCell的UE标识C-RNTI，所述第二报告信息用于当前MCG或当前PCell的UE标识C-RNTI。
  4. 根据权利要求1至3的任意一项所述的信息报告方法，其中，
    在用于触发PSCell变更的RRC消息中同时包含了用于SCG的同步重配置和用于MCG的同步重配置时，所述UE判断出所述PSCell变更过程伴随着所述PCell切换。
  5. 根据权利要求1或者2所述的信息报告方法，其中，
    所述PCell信息包含物理小区标识PCI、小区载波频率ARFCN、全局小区标识GCI、跟踪区域码TAC的一种或多种。
  6. 根据权利要求1所述的信息报告方法，其中，
    在所述PSCell变更过程的PSCell变更命令是通过SRB1接收时，所述UE在所述SPCR中包含所述第一报告信息或者所述第二报 告信息，
    在所述PSCell变更过程的PSCell变更命令是通过SRB3接收时，所述UE不在所述SPCR中包含所述第一报告信息以及所述第二报告信息。
  7. 根据权利要求1所述的信息报告方法，其中，
    在所述UE判断出所述PSCell变更过程是由主基站MN发起时，所述UE在所述SPCR中包含所述第一报告信息或者所述第二报告信息。
  8. 根据权利要求1所述的信息报告方法，其中，
    所述UE基于对应的SPCR配置来确定是否在所述SPCR中包含所述第一报告信息或者所述第二报告信息。
  9. 根据权利要求1所述的信息报告方法，其中，
    在所述UE收到来自网络侧的UEInformationRequest消息，所述UEInformationRequest消息携带了用于请求所述UE上报所保存的所述SPCR的指示/请求的情况下，所述UE将所保存的所述SPCR中的内容包含在UEInformationResponse消息中，并向网络侧发送。
  10. 一种用户设备，包括：
    处理器；以及
    存储器，所述存储器上存储有指令；
    其中，所述指令在由所述处理器运行时，使所述用户设备执行根据权利要求1-9中任意一项所述的信息报告方法。
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