WO2023246770A1 - 由用户设备执行的方法以及用户设备 - Google Patents

由用户设备执行的方法以及用户设备 Download PDF

Info

Publication number
WO2023246770A1
WO2023246770A1 PCT/CN2023/101361 CN2023101361W WO2023246770A1 WO 2023246770 A1 WO2023246770 A1 WO 2023246770A1 CN 2023101361 W CN2023101361 W CN 2023101361W WO 2023246770 A1 WO2023246770 A1 WO 2023246770A1
Authority
WO
WIPO (PCT)
Prior art keywords
scg
spcr
pscell
reconfiguration
information
Prior art date
Application number
PCT/CN2023/101361
Other languages
English (en)
French (fr)
Inventor
常宁娟
刘仁茂
Original Assignee
夏普株式会社
常宁娟
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 夏普株式会社, 常宁娟 filed Critical 夏普株式会社
Publication of WO2023246770A1 publication Critical patent/WO2023246770A1/zh

Links

Classifications

    • 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
    • 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
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present invention relates to the field of wireless communication technology, and more specifically, the present invention relates to a primary and secondary cell related information reporting method and corresponding user equipment in the case of dual connectivity.
  • the purpose of the present invention is to propose a solution to the problem of PSCell information reporting in the next generation wireless access (NR Radio Access, NR) system. More specifically, the present invention is directed at how to successfully execute in the scenario of deactivation of the Secondary Cell Group (SCG) when the user equipment (User Equipment, UE) is configured with dual connectivity (Dual Connectivity, DC).
  • SCG Secondary Cell Group
  • UE User Equipment
  • DC Dual Connectivity
  • a method executed by user equipment UE including: receiving a radio resource control RRC message containing a synchronized reconfiguration of the secondary cell group SCG, that is, a primary and secondary cell PSCell change command; and determining the content of the RRC message. Is it included for de-stimulation? an indication of an active SCG; and if the RRC message does not contain an indication for deactivating the SCG, a decision to perform a successful PSCell change reporting SPCR upon successful completion of a random access triggered by a synchronized reconfiguration for the SCG operate.
  • the method further includes: if the RRC message contains an instruction for deactivating the SCG, not performing SPCR related operations.
  • the method further includes: if the RRC message contains an instruction for deactivating the SCG, performing the SPCR decision operation at any time during the RRC reconfiguration process.
  • a method performed by user equipment UE including: receiving a radio resource control RRC message containing a synchronized reconfiguration of the secondary cell group SCG, that is, a primary and secondary cell PSCell change command; whether synchronous reconfiguration for SCG triggers random access; and if synchronous reconfiguration for SCG triggers random access, perform a successful PSCell change upon successful completion of random access triggered by synchronous reconfiguration for SCG Report SPCR decision actions.
  • the method further includes: if the synchronous reconfiguration for SCG does not trigger random access, not performing SPCR related operations.
  • the method further includes: if the synchronous reconfiguration for SCG does not trigger random access, performing the SPCR decision operation at any time during the RRC reconfiguration process.
  • the method further includes: receiving an RRC message containing the SPCR configuration from the network side.
  • the method further includes: when it is determined that one or more SPCR trigger conditions are met, recording corresponding SPCR information in SPCR-related UE variables.
  • the SPCR information includes at least one of the following: source PSCell information of the PSCell change process, target PSCell information, neighboring cell measurement results, SPCR triggering reasons, associated primary cell PCell information, triggering conditions corresponding to the triggering reasons, and indication information indicating whether the SPCR configuration is configured by the primary node MN or the secondary node SN.
  • a user equipment including: a processor; and a memory storing instructions, wherein the instructions execute the above method when executed by the processor.
  • the present invention can effectively realize the information reporting of PSCell in the NR system. More specifically, it can effectively realize the PSCell change after successfully executing the PSCell change process in the SCG deactivation scenario when the UE is configured with dual connections in the NR system. information record.
  • FIG. 1 is a flowchart illustrating a method performed by a user equipment according to Embodiment 1 of the present invention.
  • FIG. 2 is a flowchart illustrating a method performed by user equipment according to Embodiment 2 of the present invention.
  • FIG. 3 is a flowchart illustrating a method performed by a user equipment according to Embodiment 3 of the present invention.
  • FIG. 4 is a flowchart illustrating a method performed by a user equipment according to Embodiment 4 of the present invention.
  • FIG. 5 is a block diagram showing user equipment UE according to the present invention.
  • LTE Long Term Evolution
  • NR New Radio Access
  • Evolved Universal Terrestrial Radio Access Evolved Universal Terrestrial Radio Access Network E-UTRAN.
  • PSCell change refers to the change of the primary and secondary cells initiated by the network side, including the change of the primary and secondary cells between cells and the change of the primary and secondary cells within the cell, that is, the PSCell of the UE is changed from the source PSCell to the target PSCell.
  • the source PSCell and the target PSCell may be the same cell or different cells.
  • the secret key or security algorithm used for access layer security may or may not be updated accordingly.
  • the security includes encryption, decryption and integrity protection.
  • the source PSCell can also be called the source secondary base station, source secondary cell group (SCG), source beam (beam), source transmission point (Transmission point, TRP) or source cell;
  • the target PSCell can also be called the target secondary cell.
  • the PSCell change command of the present invention is used to trigger the UE to perform PSCell change.
  • it is an RRC reconfiguration message containing a synchronization reconfiguration (Reconfigurationwithsync) information element.
  • RRC reconfiguration message containing a synchronization reconfiguration (Reconfigurationwithsync) for SCG.
  • the PSCell change may also be called a synchronous reconfiguration of the SCG or a synchronous reconfiguration of the PSCell.
  • the synchronization reconfiguration information element may include the configuration information of the target cell, such as the target cell identity, 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 UE Security parameter configuration in the target cell, radio bearer configuration of the UE in the target cell, configuration of timer T304, etc.
  • the cell change command is equivalent to the RRC message containing the cell change command, and refers to the RRC message that triggers the UE to perform cell change or the configuration in the RRC message.
  • Cell change configuration refers to the Full or partial configuration. Cancel, Release, Delete, Empty and Clear can be replaced. Execution, use and application are interchangeable. Configuration and reconfiguration can be replaced. Monitor and detect are interchangeable. Unless otherwise specified, cell changes refer to PSCell changes.
  • the RRC reconfiguration message used for the cell change command carries the RRC configuration from the target base station, including but not limited to the following RRC configuration (for details, please refer to Chapter 6.2.2 in 3GPP Technical Standard Protocol 38.331):
  • -Measurement configuration used to configure intra-frequency, inter-frequency and inter-radio access technology 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.
  • CellGroupConfig information element used to configure the secondary cell group.
  • RLC Radio Link Control
  • MAC Medium Access Control
  • the SpCell configuration includes cell index number, cell change information (reconfigurationWithSync information element), wireless link failure related timer and constant configuration, wireless link detection (Radio Link Monitoring, RLM) configuration, special cell-specific configuration, etc.
  • the reconfigurationwithsync information element includes cell change related information such as serving cell configuration public information, UE's cell radio network temporary identifier C-RNTI in the target cell, cell change process monitoring timer T304 configuration, and random access process to the target cell. Access dedicated configurations, etc.
  • RadiobearerConfig information element used to configure the service data application protocol layer (Service Data Application Protocol, SDAP) of the data radio bearer (Data Radio Bearer, DRB) and/or the signaling radio bearer (Signaling Radio Bearer, SRB) ) and the Packet Data Convergence Protocol (PDCP).
  • SDAP Service Data Application Protocol
  • DRB Data Radio Bearer
  • SRB Signaling Radio Bearer
  • PDCP Packet Data Convergence Protocol
  • the UE establishes links with two base stations at the same time, that is, the radio resources used by the UE are provided by different schedulers located at the two base stations.
  • the wireless access between the two base stations and the UE can be of the same or different standards (Radio Access Technology, RAT).
  • RAT Radio Access Technology
  • both are NR, or one is NR and the other is LTE, also called evolved universal terrestrial wireless access (RAT).
  • Evolved Universal Terrestrial Radio Access, E-UTRA Evolved Universal Terrestrial Radio Access
  • the master base station Master Node, MN
  • MgNB MgNB
  • MeNB serving cell group under the master base station
  • the secondary base station Secondary Node, SN
  • SgNB SgNB
  • SeNB serving cell group under the secondary base station
  • SCG Secondary Cell Group
  • the primary base station is LTE and the secondary base station is NR
  • the DC is called EN-DC (using 4G core network) or NGEN-DC (using 5G core network);
  • the primary base station and secondary base station are both NR the DC is called NR-DC .
  • MCG includes a primary cell (Primary Cell, PCeH) and optionally one or more secondary cells (Secondary Cell, SCell).
  • PCell works on the main frequency, and the UE performs the initial connection establishment process or connection re-establishment process through the main frequency.
  • the SCG contains a primary SCG Cell (PSCell) and optionally one or more SCells.
  • PSCell refers to the SCG cell that the UE performs random access when performing the synchronization reconfiguration process of the SCG.
  • PCell and PSCell are also collectively referred to as special cells SpCell.
  • DC When DC is configured, the DRB and SRB of the UE are supported to be configured as split bearers.
  • 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 SN.
  • the change of PSCell can be initiated by the MN or the SN.
  • the MN or SN can initiate changes to the PSCell based on factors such as the measurement results of the source PSCell or neighboring cells reported by the UE or the load of the neighboring cells.
  • the cell change command package for PSCell Contained in the RRC reconfiguration message of SRB1 and sent to the UE.
  • the PSCell change command is an RRC reconfiguration message for the SCG.
  • the SN When sent to the UE through the MCG link, it is generally included in the mrdc-SecondaryCellGroupConfig information element or nr-SecondaryCellGroupConfig information element and nested in the RRC reconfiguration message of SRB1. If the change of PSCell does not require the participation of the MN, such as the intra-SN PSCell change scenario, the SN can independently generate the RRC reconfiguration message of the PSCell change command and send it to the UE through 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 detects the cell change process through a timer T304.
  • 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 failed or the synchronization reconfiguration failed.
  • the activation and deactivation mechanism of SCG is introduced in version 17.
  • Both the MN and the SN can request activation or deactivation of the SCG.
  • the MN decides whether to activate or deactivate the SCG, and sends the SCG activation and deactivation command to the UE through the RRC message of SRB1.
  • the RRC message (such as RRC reconfiguration message) received by the UE from SRB1 contains the scg-State information element, the UE performs the SCG deactivation operation; otherwise, when the RRC message does not contain the scg-State information element, the UE performs SCG activation operation.
  • the UE performs one or more of the following operations: considers the SCG to be deactivated, resets the MAC of the SCG, indicates to the lower layer of the RRC that the SCG is deactivated, and if the radio link monitoring (Radio Link monitoring, RLM) and Beam Failure Detection (BFD) related parameters (that is, the bfd-and-RLM information element is not set to true), then stop RLM for SCG and stop the timer T310/T312 for SCG. wait.
  • the UE performs one or more of the following operations: it considers the SCG to be activated. If the UE is configured with a deactivation command before receiving the activation command, Activating the SCG restores the RLM to the SCG and indicates to the lower layers of the RRC that the SCG is activated.
  • the MAC layer of the UE When the MAC layer of the UE receives the SCG deactivation indication from the RRC layer, it deactivates all SCells and PSCells of the SCG.
  • the UE When in SCG deactivation (PSCell is deactivated), the UE does not send the Sounding Reference Signal (SRS) on the PSCell of the SCG, does not report the channel status information (Channel Status Information, CSI) for the PSCell of the SCG, Do not send the Uplink-Shared Channel (UL-SCH) on the PSCell of the SCG, trigger random access on the PSCell of the SCG, monitor the PDCCH of the PSCell of the SCG, do not monitor the PDCCH of the PSCell of the SCG, or the PSCell of the SCG Send physical uplink control channel (Physical Uplink Control Channel, PUCCH).
  • SRS Sounding Reference Signal
  • CSI Channel Status Information
  • UL-SCH Uplink-Shared Channel
  • the MAC layer of the UE When the MAC layer of the UE receives the SCG activation indication from the RRC layer, it activates the SCG.
  • SCG activation PSCell is activated
  • the UE When in SCG activation (PSCell is activated), the UE is allowed to send SRS on the PSCell of SCG, report CSI for the PSCell of SCG, trigger random access on the PSCell of SCG, monitor PDCCH on the PSCell of SCG, and monitor for The PDCCH of the PSCell of the SCG and the PUCCH are allowed to be sent in the PSCell of the SCG.
  • activation/deactivation of SCG, resume/suspension of SCG, and activation/deactivation of PSCell can be replaced.
  • the SCG activation and deactivation command is the collective name for the SCG activation command and the SCG deactivation command.
  • Handover information reporting on successful handover is introduced in version 17 of the NR system.
  • Switching here refers to PCell changes or PCell synchronous reconfiguration.
  • the handover command refers to the RRC reconfiguration message containing the synchronized reconfiguration information element for the MCG.
  • the handover information report when the handover is successful is also referred to as the successful handover report (Successful Handover Report, SHR).
  • SHR successful Handover Report
  • the content of the SHR may include one or more of the following: the identity of the source cell for handover; the identity of the target cell for handover; the measurement results of the source cell or target cell for handover; neighbor cells Area measurement results; indicating the reason why the SHR was triggered (that is, which trigger condition is met), etc.
  • the successful handover includes the successful sending of an RRC reconfiguration completion message in response to the handover command RRC reconfiguration message to the target base station or the successful completion of a random access process to the target base station by the MAC layer.
  • the network side needs to configure the information used to trigger a successful handover report to the UE (such as the threshold values corresponding to T310, T312, and T304, and the source cell has experienced a wireless link during the Dual Active Protocol Stack (DAPS) handover execution process. Failure (Radio Link Failure, RLF)), only one or more trigger conditions according to the configured trigger information are met (such as when the handover command is received or when the handover is performed, the operating value of T310 (or T312) of the source cell is consistent with T310 ( Or the percentage of the configured value of T312) exceeds the configured corresponding threshold value. When the switch is successfully completed, the percentage of the operating value of T304 and the configured value of T304 exceeds the configured corresponding threshold value.
  • RLF Radio Link Failure
  • the UE will record the handover information of the successful handover.
  • the trigger conditions related to the source cell such as the T310 threshold or the T312 threshold
  • the trigger conditions related to the target cell such as the T304 threshold
  • These successful handover reports are triggered.
  • the configuration of conditions is included in the successful handover report configuration (such as the successHO-config information element).
  • the UE can inform the network side that there is a successful handover report available on it through an RRC message (as indicated by the successHO-InfoAvailable information element).
  • the network side may request the UE to report its saved successful handover information report through an RRC message (such as the successHO-ReportReq indication in the UEInformationRequest message).
  • the UE will report the saved successful handover report (successHO-Report in the UEInformationResponse message) to the network side in the response RRC message.
  • Successful handover reports saved on the UE can be saved for up to 48 hours.
  • the UE variable used to record SHR is also called SHR
  • the UE variable used to record SPCR is also called SPCR.
  • the SHR mechanism during PCell handover is standardized in the version 17 NR system to further optimize the mobile robustness in handover scenarios.
  • One of the research goals in version 18 is to introduce the PSCell change report (Successful PSCell Change Report, SPCR) in the PSCell change scenario, by reporting successful PSCell changes to the network side
  • SPCR Successessful PSCell Change Report
  • the reporting process of SPCR is similar to SHR, that is, if the UE that successfully executes the PSCell change process determines to generate an SPCR, the UE saves the content of the generated SPCR in the corresponding UE variable, and passes the RRC The message indicates to the network side that there is a saved SPCR on it; after receiving a request from the network side instructing it to report the SPCR, the UE includes the saved SPCR in the RRC message and reports it to the network side.
  • the UE's random access process during the handover process (for the synchronous reconfiguration process of the MCG) is successful.
  • SHR's decision operation will be performed when completed.
  • the operations related to the decision of SHR are to determine whether to record switching information based on the configured trigger information in the SHR configuration and to determine what switching information to record in the SHR based on the trigger cause and switching scenario of the SHR.
  • the SCG change command i.e., the RRC reconfiguration message containing the synchronous reconfiguration information element for SCG
  • SCG deactivation the RRC message carries the value set to true scgState information element
  • the method described in the present invention can be applied to the situation of adding PSCell, that is to say, the change of PSCell can also be the addition of PSCell. Or it can be applied to the situation of conditional PSCell Addition/Change (CPAC), which is also called conditional reconfiguration for SCG.
  • CPAC conditional PSCell Addition/Change
  • FIG. 1 is a diagram illustrating a method performed by a user equipment according to Embodiment 1 of the present invention. flow chart.
  • This embodiment provides a recording method of SPCR executed on the UE.
  • the UE if the PSCell change command indicates SCG deactivation, the UE does not perform the SPCR decision operation. That is to say, when the target SCG is set to be deactivated, the UE does not record the SPCR information related to the PSCell change event (that is, the information related to the successful PSCell change).
  • the network side only hopes to obtain the SPCR information in the normal SCG operating state, that is, when the SCG is activated, as a basis for PSCell mobility optimization, without the need for the UE to report the SPCR information when the SCG is deactivated.
  • the UE does not record SPCR information for the PSCell mobility event when the SCG is deactivated, thereby avoiding the UE energy consumption and air interface signaling overhead caused by unnecessary SPCR recording and reporting.
  • step 101 an RRC message containing a synchronous reconfiguration of the SCG, that is, a PSCell change command, is received.
  • the RRC message is an RRC reconfiguration message.
  • the UE applies the configuration in the RRC message to perform the RRC reconfiguration process.
  • Step 103 If the UE is configured with SPCR configuration, the UE determines whether the RRC message contains an instruction for deactivating the SCG (such as the scg-State information element set to true).
  • step 107 the UE performs the SPCR decision operation when the random access triggered by the synchronization reconfiguration for the SCG is successfully completed. If so, that is, the RRC message contains the deactivation SCG indication, then in step 105, the UE does not perform SPCR related operations.
  • the UE is configured with the SPCR configuration when the UE is connected to the source PSCell. That is to say, step 101 or before step 101 also includes the UE receiving an RRC message containing the SPCR configuration from the network side.
  • the SPCR configuration refers to the configuration used by the UE to report successful PSCell change information to the network side.
  • the SPCR configuration includes the configuration of triggering conditions for the UE to determine whether to successfully record PSCell change information corresponding to a PSCell change record, that is, the configuration of SPCR trigger information.
  • it can be the T310 threshold for PSCell, the T312 threshold for PSCell, or the T304 threshold for SCG.
  • the The threshold value described above is a percentage threshold value.
  • the T310 threshold for PSCell indicates the percentage threshold between the elapsed value of T310 for PSCell and the configured value of T310; the T312 threshold for PSCell indicates the T312 for PSCell The percentage threshold between the elapsed value of T312 and the configured value of T312; the T304 threshold value for SCG indicates the percentage threshold between the elapsed value of T304 for SCG and the configured value of T304 .
  • the UE determines whether to record relevant information of a certain PSCell change process in the UE variable corresponding to the SPCR based on the trigger information in the SPCR configuration. Therefore, the trigger information in the SPCR configuration is also called the SPCR trigger condition in the present invention.
  • the UE When the UE determines that one or more SPCR trigger conditions are met, the UE records the corresponding SPCR information in the SPCR-related UE variables.
  • the satisfaction of the SPCR trigger condition means that the UE determines that one or more trigger information in the SPCR configuration is satisfied.
  • the trigger condition is the T310 threshold value, it refers to the T310 operating value of the source PSCell before executing the synchronous reconfiguration of the PSCell (or when initiating the execution of the PSCell change) when the UE receives the PSCell change command.
  • the UE considers that the SPCR trigger condition is met.
  • the trigger condition is the T312 threshold value, it refers to the running value of T312 of the source PSCell before executing the synchronous reconfiguration of the PSCell (or when initiating the execution of the PSCell change) when the UE receives the PSCell change command.
  • the UE considers that the SPCR trigger condition is met.
  • the trigger condition is the T304 threshold, which means that the ratio of the T304 operating value to the T304 configuration value included in the PSCell change command exceeds the configured threshold, the UE considers that the SPCR trigger condition is met.
  • the SPCR decision operation refers to the above-mentioned decision of whether to record PSCell change-related information based on the trigger information in the SPCR configuration and determining which PSCell change-related information is recorded in the SPCR based on the trigger cause of the SPCR and the PSCell change scenario. (SPCR information).
  • the SPCR information includes source PSCell information (such as source PSCell identification, source PSCell measurement), target PSCell information (such as target PSCell identification, target PSCell measurement), neighboring cell measurement results, SPCR triggering reasons, and associated PCell information (such as PCell identification, PCell measurement), trigger conditions/SPCR corresponding to trigger reasons Indicates whether the configuration is configured by the MN or the SN, etc.
  • source PSCell information such as source PSCell identification, source PSCell measurement
  • target PSCell information such as target PSCell identification, target PSCell measurement
  • neighboring cell measurement results such as SPCR triggering reasons
  • SPCR triggering reasons such as PCell identification, PCell measurement
  • associated PCell information such as PCell identification, PCell measurement
  • trigger conditions/SPCR corresponding to trigger reasons Indicates whether the configuration is configured by the MN or the SN, etc.
  • the present invention does not limit the SPCR information recorded by the UE in the UE variable corresponding to the SPCR. This is only an example.
  • FIG. 2 is a flowchart illustrating a method performed by user equipment according to Embodiment 2 of the present invention.
  • This embodiment provides a recording method of SPCR executed on the UE.
  • the UE if the random access process is not triggered during the RRC reconfiguration process for PSCell change (for example, SCG deactivation is indicated in the RRC message), the UE does not perform the SPCR decision operation. That is to say, when the UE does not perform the random access process to the target PSCell, the UE does not record the relevant SPCR information for this PSCell change event (that is, the information related to the successful PSCell change).
  • This embodiment is a modification of Embodiment 1 to achieve the same effect as in Embodiment 1.
  • step 201 an RRC message containing a synchronous reconfiguration of the SCG, that is, a PSCell change command, is received.
  • the RRC message is an RRC reconfiguration message.
  • the UE applies the configuration in the RRC message to perform the RRC reconfiguration process.
  • step 203 if the UE is configured with SPCR configuration, the UE determines whether the synchronous reconfiguration for SCG in the process triggers random access.
  • step 207 the UE performs the SPCR decision operation when the random access triggered by the synchronous reconfiguration for SCG is successfully completed. If not, that is, the synchronous reconfiguration for SCG does not trigger random access, then in step 205, the UE does not perform SPCR related operations.
  • the UE is configured with the SPCR configuration when the UE is connected to the source PSCell. That is to say, step 201 or before step 201 also includes the UE receiving an RRC message containing the SPCR configuration from the network side.
  • the SPCR configuration is the same as that described in Embodiment 1 and will not be described again here.
  • the SPCR information is the same as that described in Example 1 and will not be described again here.
  • FIG. 3 is a flowchart illustrating a method performed by a user equipment according to Embodiment 3 of the present invention.
  • This embodiment provides a recording method of SPCR executed on the UE.
  • the UE determines when to perform the SPCR decision operation based on whether SCG deactivation is indicated in the PSCell change command.
  • the network side not only hopes to obtain the normal SCG operating status, that is, the SPCR information when the SCG is activated, as a basis for PSCell mobility optimization, but also requires the UE to report the SPCR information when the SCG is deactivated to optimize the PSCell mobility when the SCG is deactivated. performance optimization.
  • the UE performs the SPCR decision operation at an appropriate time during the PSCell change process in which the target PSCell is deactivated, and records the information corresponding to the mobility event in the UE variable of the SPCR.
  • step 301 receive an RRC message containing a synchronous reconfiguration of the SCG, that is, a PSCel1 change command.
  • the RRC message is an RRC reconfiguration message.
  • the UE applies the configuration in the RRC message to perform the RRC reconfiguration process.
  • step 303 if the UE is configured with SPCR configuration, the UE determines whether the RRC message contains an indication for deactivating the SCG (such as an scg-State information element set to true).
  • step 307 the UE performs the SPCR decision operation when the random access triggered by the synchronization reconfiguration for the SCG is successfully completed. If so, that is, the RRC message contains the deactivation SCG indication, then preferably, in step 305, the UE performs the SPCR decision operation at any time during the RRC reconfiguration process. Optionally, the UE performs the SPCR decision operation after completing the synchronization reconfiguration process (that is, after applying the configuration in the synchronization reconfiguration information element) or during the synchronization reconfiguration process.
  • the UE when the UE receives the RRC message in step 301 and determines that the message contains the synchronization reconfiguration information element for the SCG, the UE performs the SPCR decision operation.
  • the UE performs the SPCR decision operation when judging that the configuration in the RRC message can be applied (able to comply).
  • the UE is configured with the SPCR configuration when the UE is connected to the source PSCell. That is to say, step 301 or before step 301 also includes the UE receiving an RRC message containing the SPCR configuration from the network side.
  • the SPCR configuration is the same as that described in Embodiment 1 and will not be described again here.
  • the SPCR information is the same as that described in Example 1 and will not be described again here.
  • FIG. 4 is a flowchart illustrating a method performed by a user equipment according to Embodiment 4 of the present invention.
  • This embodiment provides a recording method of SPCR executed on the UE.
  • the UE determines when to perform the SPCR decision operation based on whether the random access process is triggered during the RRC reconfiguration process for PSCell change.
  • This embodiment is a modification of Embodiment 3 to achieve the same effect as in Embodiment 3.
  • step 401 receive an RRC message containing a synchronous reconfiguration of the SCG, that is, a PSCell change command.
  • the RRC message is an RRC reconfiguration message.
  • the UE applies the configuration in the RRC message to perform the RRC reconfiguration process.
  • step 403 if the UE is configured with SPCR configuration, the UE determines whether the synchronous reconfiguration for SCG in the process triggers random access.
  • step 407 the UE performs the SPCR decision operation when the random access triggered by the synchronous reconfiguration for SCG is successfully completed. If not, that is, the synchronous reconfiguration for SCG does not trigger random access, then preferably, in step 405, the UE performs the SPCR decision operation at any time during the RRC reconfiguration process. Optionally, the UE performs the SPCR decision operation after completing the synchronization reconfiguration process (that is, after applying the configuration in the synchronization reconfiguration information element) or during the synchronization reconfiguration process.
  • the UE when the UE receives the RRC message in step 401 and determines that the message contains the synchronization reconfiguration information element for the SCG, the UE performs the SPCR decision operation.
  • the UE performs the SPCR decision operation when judging that the configuration in the RRC message can be applied (able to comply).
  • the UE is configured with the SPCR configuration when the UE is connected to the source PSCell. That is to say, step 401 or before step 401 also includes the UE receiving an RRC message containing the SPCR configuration from the network side.
  • the SPCR configuration is the same as that described in Embodiment 1 and will not be described again here.
  • the SPCR information is the same as that described in Example 1 and will not be described again here.
  • FIG. 5 is used to illustrate a user equipment that can execute the method performed by the user equipment described in detail above as a modified example of the present invention.
  • FIG. 5 is a block diagram showing user equipment UE according to the present invention.
  • the user equipment UE50 includes a processor 501 and a memory 502.
  • the processor 50l may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like.
  • the memory 502 may include, for example, volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory.
  • Memory 502 stores program instructions. When this instruction is executed by the processor 501, it can execute the above method executed by the user equipment as described in detail in the present invention.
  • the method and related equipment of the present invention have been described above in conjunction with preferred embodiments. Those skilled in the art will understand that the methods shown above are only exemplary. 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, may also include modules that may be developed or developed in the future and may be used for the base station, MME, or UE, and so on.
  • the various identifications shown above are only illustrative and not restrictive, and the present invention is not limited to the specific information elements as examples of these identifications. Many changes and modifications may be made by those skilled in the art in light of the teachings of the illustrated embodiments.
  • the program running on the device according to the present invention may be a program that causes the computer to implement the functions of the embodiments of the present invention by controlling a central processing unit (CPU).
  • the program or by the program Processed information may be temporarily stored in volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory systems.
  • volatile memory such as random access memory RAM
  • HDD hard disk drive
  • non-volatile memory such as flash memory
  • Programs for realizing the functions of each embodiment of the present invention can be recorded on a computer-readable recording medium.
  • Corresponding functions can be realized by causing the computer system to read programs recorded on the recording medium and execute these programs.
  • the so-called “computer system” here may be a computer system embedded in the device, which may include an operating system or hardware (such as peripheral devices).
  • the "computer-readable recording medium” may be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a short-term dynamic storage program recording medium, or any other recording medium readable by a computer.
  • circuits eg, single-chip or multi-chip integrated circuits.
  • Circuitry designed to perform the functions described in this specification may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field-programmable gate array
  • a general-purpose processor can be a microprocessor or any existing processor, controller, microcontroller, or state machine.
  • the above circuit may be a digital circuit or an analog circuit.
  • the present invention is not limited to the above-described embodiment. Although various examples of the embodiments have been described, the invention is not limited thereto.
  • Fixed or non-mobile electronic equipment installed indoors or outdoors can be used as terminal equipment or communication equipment, such as AV equipment, kitchen equipment, cleaning equipment, air conditioners, office equipment, vending machines, and other household appliances.

Landscapes

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

Abstract

根据本发明，提出了一种由用户设备UE执行的方法，包括：接收包含用于辅小区组SCG的同步重配置的无线资源控制RRC消息即主辅小区PSCell变更命令；判断所述RRC消息中是否包含用于去激活SCG的指示；以及若所述RRC消息中不包含用于去激活SCG的指示，则在成功完成由用于SCG的同步重配置所触发的随机接入之时执行成功PSCell变更报告SPCR的决定操作。

Description

由用户设备执行的方法以及用户设备 技术领域
本发明涉及无线通信技术领域，更具体地，本发明涉及双连接情况下的主辅小区相关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。
发明内容
为了解决上述问题中的至少一部分，本发明的目的在于如何实现在下一代无线接入(NR Radio Access，NR)系统中PSCell信息报告的问题提出解决方法。更具体地，本发明针对在NR系统中如何在用户设备(User Equipment，UE)配置了双连接(Dual Connectivity，DC)时在辅小区组(Secondary Cell Group，SCG)去激活的场景下成功执行了PSCell变更过程后的PSCell变更信息记录问题提出了解决方法。
根据本发明，提出了一种由用户设备UE执行的方法，包括：接收包含用于辅小区组SCG的同步重配置的无线资源控制RRC消息即主辅小区PSCell变更命令；判断所述RRC消息中是否包含用于去激 活SCG的指示；以及若所述RRC消息中不包含用于去激活SCG的指示，则在成功完成由用于SCG的同步重配置所触发的随机接入之时执行成功PSCell变更报告SPCR的决定操作。
优选地，所述方法还包括：若所述RRC消息中包含用于去激活SCG的指示，则不执行SPCR相关操作。
优选地，所述方法还包括：若所述RRC消息中包含用于去激活SCG的指示，则在RRC重配置过程中的任意时刻执行SPCR的决定操作。
另外，根据本发明，提出了一种由用户设备UE执行的方法，包括：接收包含用于辅小区组SCG的同步重配置的无线资源控制RRC消息即主辅小区PSCell变更命令；判断用于SCG的同步重配置是否触发了随机接入；以及若用于SCG的同步重配置触发了随机接入，则在成功完成由用于SCG的同步重配置所触发的随机接入之时执行成功PSCell变更报告SPCR的决定操作。
优选地，所述方法还包括：若用于SCG的同步重配置未触发随机接入，则不执行SPCR相关操作。
优选地，所述方法还包括：若用于SCG的同步重配置未触发随机接入，则在RRC重配置过程中的任意时刻执行SPCR的决定操作。
优选地，所述方法在接收所述PSCell变更命令的过程中或之前还包括：从网络侧接收包含SPCR配置的RRC消息。
优选地，所述方法还包括：当判断一个或多个SPCR触发条件满足，则在SPCR相关的UE变量中记录对应的SPCR信息。
优选地，所述SPCR信息包含以下至少一项：PSCell变更过程的源PSCell信息、目标PSCell信息、邻小区测量结果、SPCR的触发原因、所关联的主小区PCell信息、触发原因对应的触发条件、以及表示SPCR配置是由主节点MN配置还是由辅节点SN配置的指示信息。
此外，根据本发明，提出了一种用户设备，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上述的方法。
本发明能够在NR系统中有效实现PSCell的信息报告，更具体地，有效实现了针对在NR系统中在UE配置了双连接时在SCG去激活的场景下成功执行了PSCell变更过程后的PSCell变更信息记录。
附图说明
为了更完整地理解本发明及其优势，现在将参考结合附图的以下描述，其中：
图1是示出了根据本发明的实施例1的由用户设备执行的方法的流程图。
图2是示出了根据本发明的实施例2的由用户设备执行的方法的流程图。
图3是示出了根据本发明的实施例3的由用户设备执行的方法的流程图。
图4是示出了根据本发明的实施例4的由用户设备执行的方法的流程图。
图5是表示本发明所涉及的用户设备UE的框图。
具体实施方式
根据结合附图对本发明示例性实施例的以下详细描述，本发明的其它方面、优势和突出特征对于本领域技术人员将变得显而易见。
在本发明中，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，下述用于描述本发明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发明的示例性实施例。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，在不背离本发明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，具体描述了根据本发明的多个实施方式。然而，需要指出的是，本发明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，在本发明中，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。在本发明中，PSCell变更指的是网络侧发起的主辅小区的变更，包含小区间的主辅小区变更也包含小区内的主辅小区变更，即UE的PSCell从源PSCell变更为目标PSCell，其中源PSCell和目标PSCell可以是同一个小区也可以是不同的小区。在此过程中，用于接入层安全的秘钥或安全算法也可随之更新或不更新。所述安全包括加密解密和完整性保护。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。本发明所述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，更进一步地，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，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、定时器T304的配置等。为便于描述，本发明中小区变更命令和包含小区变更命令的RRC消息等同，指触发UE执行小区变更的RRC消息或RRC消息中的配置。小区变更配置指小区变更命令中的 全部或部分配置。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，如无特殊说明，小区变更指的是PSCell变更。
下列描述了本发明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，PCeH)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SRBl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激活/去激活(activation/deactivation)机制
版本17中引入SCG的激活去激活机制，通过将整个SCG小区组激活和去激活以适应动态变化的UE业务量/业务速率，以期望在UE业务量低时进一步节省不必要的上下行发送或链路监测所带来的功率开销。
MN和SN都可以请求激活或去激活SCG。由MN来决定是否激活或去激活SCG，并通过SRB1的RRC消息向UE发送SCG激活去激活命令。当UE从SRB1上收到的RRC消息(如RRC重配置消息)包含了scg-State信息元素时，UE执行SCG的去激活操作；否则当RRC消息中不包含scg-State信息元素时，UE执行SCG的激活操作。在SCG去激活过程中，UE执行下述操作的一个或多个：认为SCG是去激活的、重置SCG的MAC、向RRC的下层指示SCG被去激活、若未配置无线链路监测(Radio Link monitoring，RLM)和波束失败检测(Beam Failure Detection，BFD)相关参数(即bfd-and-RLM信息元素未设置为true)，则停止对SCG的RLM、停止用于SCG的定时器T310/T312等。在SCG激活的过程中，UE执行下述一个或多个操作：认为SCG被激活、若接收到该激活命令之前UE被配置了一个去 激活SCG，则恢复对SCG的RLM、以及向RRC的下层指示SCG被激活。
UE的MAC层收到RRC层的SCG去激活指示时，去激活SCG所有的SCell和PSCell。当处于SCG deactivation时(PSCell是去激活的)，UE不在SCG的PSCell上发送探测参考信号(Sounding Reference Signal，SRS)、不上报用于SCG的PSCell的信道状态信息(Channel Status Information，CSI)、不在SCG的PSCell上发送上行共享信道(Uplink-Shared Channel，UL-SCH)、不在SCG的PSCell触发随机接入、不在SCG的PSCell监听PDCCH、不监听用于SCG的PSCell的PDCCH、不在SCG的PSCell发送物理上行控制信道(Physical Uplink Control Channel，PUCCH)。UE的MAC层收到RRC层的SCG激活指示时，激活SCG。当处于SCG activation时(PSCell是激活的)，UE允许在SCG的PSCell上发送SRS、上报用于SCG的PSCell的CSI、在SCG的PSCell触发随机接入、在SCG的PSCell监听PDCCH、监听用于SCG的PSCell的PDCCH以及允许在SCG的PSCell发送PUCCH。本发明中，SCG的激活/去激活、SCG的恢复(resume)/挂起(suspension)，和PSCell的激活/去激活之间可以替换。SCG激活去激活命令是对SCG激活命令和SCG去激活命令的统称。
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配置用于触发成功切换报告的信息(如T310、T312、T304对应的门限值，双激活协议栈(Dual Active Protocol Stack，DAPS)切换执行过程中源小区经历了无线链路失败(Radio Link Failure，RLF))，只有根据所配置的触发信息的一个或多个触发条件满足(如收到切换命令时或执行切换时源小区的T310(或T312)的运行值与T310(或T312)的配置值的百分比超过所配置的对应的门限值，切换成功完成时的T304的运行值与T304的配置值的百分比超过了所配置的对应的门限值，DAPS切换执行过程中源小区发生了RLF)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，这些成功切换报告触发条件的配置包含在成功切换报告配置中(如successHO-config信息元素)。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消息中将所保存的成功切换报告(UEInformationResponse消息中的successHO-Report)上报给网络侧。UE上保存的成功切换报告最多可以保存48小时。本发明中，为了描述方便，用于记录SHR的UE变量也称SHR，用于记录SPCR的UE变量也称SPCR。
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。在本发明中，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。在R17的SHR机制中，因为NR系统的切换过程总是伴随着向目标小区的随机接入过程的执行，因此UE在切换过程(用于MCG的同步重配置过程)中的随机接入过程成功完成时会执行SHR的决定操作。SHR的决定相关的操作即基于所配置的SHR配置中的触发信息来确定是否记录切换信息以及根据SHR的触发原因和切换场景来确定在SHR中记录哪些切换信息。与切换场景不同的是，在PSCell变更场景下，若SCG变更命令(即包含用于SCG的同步重配置信息元素的RRC重配置消息)中指示了SCG去激活(RRC消息中携带了设置为true的scgState信息元素)，那么UE在该RRC重配置过程中执行同步重配置时，并不会发起到目标小区的随机接入过程，而是要等到之后SCG被激活时才判断是否发起随机接入过程。那么在SCG去激活情况下执行的PSCell变更时，是否执行以及何时执行SPCR的决定操作成功本发明所关注的问题。本发明中所述方法可适用于PSCell添加的情况，也就是说所述PSCell变更也可以是PSCell添加。或者可适用于条件PSCell添加或变更(Conditional PSCell Addition/Change，CPAC)的情况，也称用于SCG的条件重配置。
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
图1是示出了根据本发明的实施例1的由用户设备执行的方法的 流程图。
该实施例给出了一种在UE上执行的SPCR的记录方法。在该实施例中，若PSCell变更命令中指示了SCG去激活，则UE不执行SPCR的决定操作。也就是说对于目标SCG被设置为去激活时，UE不对该次PSCell变更事件记录相关的SPCR信息(即成功PSCell变更相关信息)。在一些网络中，网络侧仅希望获取正常SCG运行状态即SCG激活时的SPCR信息来作为PSCell移动性优化的依据，而无需UE上报SCG去激活时的SPCR信息。考虑到这种需求，通过本实施例，UE不对SCG去激活时的PSCell移动性事件记录SPCR信息，从而避免不必要的SPCR记录和上报而带来的UE能耗和空口信令开销。
如图1所示，在步骤101，接收包含用于SCG的同步重配置的RRC消息，即PSCell变更命令。
优选地，该RRC消息为RRC重配置消息。UE应用该RRC消息中的配置执行RRC重配置过程。
步骤103：若UE被配置了SPCR配置，则UE判断所述RRC消息中是否包含用于去激活SCG的指示(如设置为true的scg-State信息元素)。
若否，即所述RRC消息中不包含去激活SCG指示，则在步骤107，UE在成功完成由用于SCG的同步重配置所触发的随机接入之时执行SPCR的决定操作。若是，即所述RRC消息中包含去激活SCG指示，则在步骤105，UE不执行SPCR相关操作。
优选地，UE被配置了SPCR配置是UE在连接到源PSCell时被配置了SPCR配置。也就是说，在步骤101中或步骤101之前还包括UE从网络侧接收包含SPCR配置的RRC消息。
所述SPCR配置指用于UE向网络侧上报成功PSCell变更信息的配置。优选地，所述SPCR配置包含用于UE确定是否对一个PSCell变更记录对应的成功PSCell变更信息的触发条件的配置，即SPCR触发信息的配置。例如可以是用于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，用于PSCell的T310门限值指示了用于PSCell的T310的运行值(elapsed value)和T310的配置值之间的百分比门限；用于PSCell的T312门限值指示了用于PSCell的T312的运行值(elapsed value)和T312的配置值之间的百分比门限；用于SCG的T304门限值指示了用于SCG的T304的运行值(elapsed value)和T304的配置值之间的百分比门限。UE根据SPCR配置中的触发信息来确定是否在SPCR对应的UE变量中记录某次PSCell变更过程的相关信息。因此本发明中也称SPCR配置中的触发信息为SPCR触发条件。当UE判断一个或多个SPCR触发条件满足，则UE在SPCR相关的UE变量中记录对应的SPCR信息。所述SPCR触发条件满足指的是UE判断SPCR配置中的一个或多个触发信息满足。例如触发条件为T310门限值时，指的是所述当UE收到PSCell变更命令时执行PSCell的同步重配置前(或发起PSCell变更的执行时)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认为该SPCR触发条件满足。当触发条件为T312门限值时，指的是所述当UE收到PSCell变更命令时执行PSCell的同步重配置前(或发起PSCell变更的执行时)的源PSCell的T312的运行值与T312的配置值的比率超过了所配置的门限值时，UE认为该SPCR触发条件满足。当触发条件为T304门限值时，指的是T304的运行值与包含在PSCell变更命令中的T304的配置值的比率超过了所配置的门限值时，UE认为该SPCR触发条件满足。
所述SPCR的决定操作即指的是上述根据SPCR配置中的触发信息来决定是否记录PSCell变更相关的信息以及根据SPCR的触发原因和PSCell变更的场景来确定在SPCR中记录哪些PSCell变更相关的信息(SPCR信息)。
优选地，SPCR信息包含PSCell变更过程的源PSCell信息(如源PSCell标识、源PSCell测量)、目标PSCell信息(如目标PSCell标识、目标PSCell测量)、邻小区测量结果、SPCR的触发原因、所关联的PCell信息(如PCell标识、PCell测量)、触发原因对应的触发条件/SPCR 配置是由MN配置的还是由SN配置的指示信息等。本发明并不限定UE在SPCR对应的UE变量中所记录的SPCR信息是哪些信息，此处仅为举例。
实施例2
图2是示出了根据本发明的实施例2的由用户设备执行的方法的流程图。
该实施例给出了一种在UE上执行的SPCR的记录方法。在该实施例中，若用于PSCell变更的RRC重配置过程中未触发随机接入过程(如RRC消息中指示了SCG去激活)，则UE不执行SPCR的决定操作。也就是说当UE未执行到目标PSCell的随机接入过程时，UE不对该次PSCell变更事件记录相关的SPCR信息(即成功PSCell变更相关信息)。该实施例是实施例1的变形例，以达到和实施例1中相同的效果。
如图2所示，在步骤201，接收包含用于SCG的同步重配置的RRC消息，即PSCell变更命令。
优选地，该RRC消息为RRC重配置消息。UE应用该RRC消息中的配置执行RRC重配置过程。
在步骤203，若UE被配置了SPCR配置，则UE判断该过程中用于SCG的同步重配置是否触发了随机接入。
若是，即用于SCG的同步重配置触发了随机接入，则在步骤207，UE在成功完成由用于SCG的同步重配置所触发的随机接入之时执行SPCR的决定操作。若否，即用于SCG的同步重配置未触发随机接入，则在步骤205，UE不执行SPCR相关操作。
优选地，UE被配置了SPCR配置是UE在连接到源PSCell时被配置了SPCR配置。也就是说，在步骤201中或步骤201之前还包括UE从网络侧接收包含SPCR配置的RRC消息。
SPCR配置同实施例1中所述，此处不赘述。
SPCR的决定操作同实施例1中所述，此处不赘述。
SPCR信息同实施例1中所述，此处不赘述。
实施例3
图3是示出了根据本发明的实施例3的由用户设备执行的方法的流程图。
该实施例给出了一种在UE上执行的SPCR的记录方法。在该实施例中，UE基于PSCell变更命令中是否指示了SCG去激活来判断何时执行SPCR的决定操作。在一些网络中，网络侧不仅希望获取正常SCG运行状态即SCG激活时的SPCR信息来作为PSCell移动性优化的依据，也需要UE上报SCG去激活时的SPCR信息以对SCG去激活时的PSCell移动性进行优化。考虑到这种需求，通过本实施例，UE在目标PSCell被去激活的PSCell变更过程中在合适的时间来执行SPCR的决定操作，并在SPCR的UE变量中记录该次移动事件对应的信息。
如图3所示，在步骤301：接收包含用于SCG的同步重配置的RRC消息，即PSCel1变更命令。
优选地，该RRC消息为RRC重配置消息。UE应用该RRC消息中的配置执行RRC重配置过程。
在步骤303，若UE被配置了SPCR配置，则UE判断所述RRC消息中是否包含用于去激活SCG的指示(如设置为true的scg-State信息元素)。
若否，即所述RRC消息中不包含去激活SCG指示，则在步骤307，UE在成功完成由用于SCG的同步重配置所触发的随机接入之时执行SPCR的决定操作。若是，即所述RRC消息中包含去激活SCG指示，则优选地，在步骤305，UE在RRC重配置过程中的任意时刻执行SPCR的决定操作。可选地，UE在执行完同步重配置过程后(即应用了同步重配置信息元素中的配置后)或在执行同步重配置过程中执行SPCR的决定操作。可选地，UE在接收到步骤301中的RRC消息时判断该消息中包含用于SCG的同步重配置信息元素时执行SPCR的决定操作。可选地，UE在判断可以应用(able to comply)该RRC消息中的配置时执行SPCR的决定操作。
优选地，UE被配置了SPCR配置是UE在连接到源PSCell时被配置了SPCR配置。也就是说，在步骤301中或步骤301之前还包括UE从网络侧接收包含SPCR配置的RRC消息。
SPCR配置同实施例1中所述，此处不赘述。
SPCR的决定操作同实施例1中所述，此处不赘述。
SPCR信息同实施例1中所述，此处不赘述。
实施例4
图4是示出了根据本发明的实施例4的由用户设备执行的方法的流程图。
该实施例给出了一种在UE上执行的SPCR的记录方法。在该实施例中，UE基于用于PSCell变更的RRC重配置过程中是否触发随机接入过程来判断何时执行SPCR的决定操作。该实施例是实施例3的变形例，以达到和实施例3中相同的效果。
如图4所示，在步骤401：接收包含用于SCG的同步重配置的RRC消息，即PSCell变更命令。
优选地，该RRC消息为RRC重配置消息。UE应用该RRC消息中的配置执行RRC重配置过程。
在步骤403，若UE被配置了SPCR配置，则UE判断该过程中用于SCG的同步重配置是否触发了随机接入。
若是，即用于SCG的同步重配置触发了随机接入，则在步骤407，UE在成功完成由用于SCG的同步重配置所触发的随机接入之时执行SPCR的决定操作。若否，即用于SCG的同步重配置未触发随机接入，则优选地，则在步骤405，UE在RRC重配置过程中的任意时刻执行SPCR的决定操作。可选地，UE在执行完同步重配置过程后(即应用了同步重配置信息元素中的配置后)或在执行同步重配置过程中执行SPCR的决定操作。可选地，UE在接收到步骤401中的RRC消息时判断该消息中包含用于SCG的同步重配置信息元素时执行SPCR的决定操作。可选地，UE在判断可以应用(able to comply)该RRC消息中的配置时执行SPCR的决定操作。
优选地，UE被配置了SPCR配置是UE在连接到源PSCell时被配置了SPCR配置。也就是说，在步骤401中或步骤401之前还包括UE从网络侧接收包含SPCR配置的RRC消息。
SPCR配置同实施例1中所述，此处不赘述。
SPCR的决定操作同实施例1中所述，此处不赘述。
SPCR信息同实施例1中所述，此处不赘述。
[变形例]
下面，利用图5来说明作为一种变形例的可执行本发明上面所详细描述的用户设备执行的方法的用户设备。
图5是表示本发明所涉及的用户设备UE的框图。
如图5所示，该用户设备UE50包括处理器501和存储器502。处理器50l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，可以执行本发明详细描述的由用户设备执行的上述方法。
上文已经结合优选实施例对本发明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。本发明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，本发明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。
运行在根据本发明的设备上的程序可以是通过控制中央处理单元(CPU)来使计算机实现本发明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。
用于实现本发明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，本发明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，本发明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，但本发明并不局限于此。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，已经参考附图对本发明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，本发明也包括不偏离本发明主旨的任何设计改动。另外，可以在权利要求的范围内对本发明进行多种改动，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发明的技术范围内。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. 一种由用户设备UE执行的方法，包括：
    接收包含用于辅小区组SCG的同步重配置的无线资源控制RRC消息即主辅小区PSCell变更命令；
    判断所述RRC消息中是否包含用于去激活SCG的指示；以及
    若所述RRC消息中不包含用于去激活SCG的指示，则在成功完成由用于SCG的同步重配置所触发的随机接入之时执行成功PSCell变更报告SPCR的决定操作。
  2. 根据权利要求1所述的方法，还包括：
    若所述RRC消息中包含用于去激活SCG的指示，则不执行SPCR相关操作。
  3. 根据权利要求1所述的方法，还包括：
    若所述RRC消息中包含用于去激活SCG的指示，则在RRC重配置过程中的任意时刻执行SPCR的决定操作。
  4. 一种由用户设备UE执行的方法，包括：
    接收包含用于辅小区组SCG的同步重配置的无线资源控制RRC消息即主辅小区PSCell变更命令；
    判断用于SCG的同步重配置是否触发了随机接入；以及
    若用于SCG的同步重配置触发了随机接入，则在成功完成由用于SCG的同步重配置所触发的随机接入之时执行成功PSCell变更报告SPCR的决定操作。
  5. 根据权利要求4所述的方法，还包括：
    若用于SCG的同步重配置未触发随机接入，则不执行SPCR相关操作。
  6. 根据权利要求4所述的方法，还包括：
    若用于SCG的同步重配置未触发随机接入，则在RRC重配置过程中的任意时刻执行SPCR的决定操作。
  7. 根据权利要求1-5的任一项所述的方法，
    在接收所述PSCell变更命令的过程中或之前还包括：
    从网络侧接收包含SPCR配置的RRC消息。
  8. 根据权利要求7所述的方法，还包括：
    当判断一个或多个SPCR触发条件满足，则在SPCR相关的UE变量中记录对应的SPCR信息。
  9. 根据权利要求8所述的方法，其中，
    所述SPCR信息包含以下至少一项：PSCell变更过程的源PSCell信息、目标PSCell信息、邻小区测量结果、SPCR的触发原因、所关联的主小区PCell信息、触发原因对应的触发条件、以及表示SPCR配置是由主节点MN配置还是由辅节点SN配置的指示信息。
  10. 一种用户设备，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权利要求1至9的任一项所述的方法。
PCT/CN2023/101361 2022-06-21 2023-06-20 由用户设备执行的方法以及用户设备 WO2023246770A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210707951.7A CN117320086A (zh) 2022-06-21 2022-06-21 由用户设备执行的方法以及用户设备
CN202210707951.7 2022-06-21

Publications (1)

Publication Number Publication Date
WO2023246770A1 true WO2023246770A1 (zh) 2023-12-28

Family

ID=89272459

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/101361 WO2023246770A1 (zh) 2022-06-21 2023-06-20 由用户设备执行的方法以及用户设备

Country Status (2)

Country Link
CN (1) CN117320086A (zh)
WO (1) WO2023246770A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150110271A (ko) * 2014-03-21 2015-10-02 삼성전자주식회사 복수의 캐리어들을 지원하는 이동 통신 시스템에서 신호 송/수신 방법 및 장치
CN110545567A (zh) * 2019-09-29 2019-12-06 展讯通信（上海）有限公司 小区条件更新方法及用户设备、计算机可读存储介质
CN114640429A (zh) * 2020-12-15 2022-06-17 夏普株式会社 由用户设备执行的方法及用户设备
CN114641082A (zh) * 2020-12-16 2022-06-17 夏普株式会社 小区变更方法以及用户设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150110271A (ko) * 2014-03-21 2015-10-02 삼성전자주식회사 복수의 캐리어들을 지원하는 이동 통신 시스템에서 신호 송/수신 방법 및 장치
CN110545567A (zh) * 2019-09-29 2019-12-06 展讯通信（上海）有限公司 小区条件更新方法及用户设备、计算机可读存储介质
CN114640429A (zh) * 2020-12-15 2022-06-17 夏普株式会社 由用户设备执行的方法及用户设备
CN114641082A (zh) * 2020-12-16 2022-06-17 夏普株式会社 小区变更方法以及用户设备

Also Published As

Publication number Publication date
CN117320086A (zh) 2023-12-29

Similar Documents

Publication Publication Date Title
US20230345312A1 (en) User mobility method and device
WO2021228137A1 (zh) 小区变更方法以及用户设备
JP7028978B2 (ja) 無線通信ネットワークにおけるユーザ装置、ネットワークノードおよび方法
WO2021190608A1 (zh) 无线链路失败报告方法以及用户设备
US20190380081A1 (en) Method and device for user mobility
WO2020151653A1 (zh) 由用户设备执行的切换方法以及用户设备
WO2020221193A1 (zh) 条件切换方法及对应的用户设备
BR112021010921A2 (pt) Suspend-resume em handover condicional
WO2022127731A1 (zh) 小区变更方法以及用户设备
WO2022012363A1 (zh) 切换信息报告方法及用户设备
US20230180330A1 (en) Radio link failure recovery method and corresponding user equipment
WO2021254197A1 (zh) 由用户设备执行的方法以及用户设备
WO2023134763A1 (zh) 信息报告方法以及用户设备
WO2023040955A1 (zh) 切换信息报告方法以及用户设备
WO2023125649A1 (zh) 连接建立失败报告方法和用户设备
WO2022127730A1 (zh) 由用户设备执行的方法以及用户设备
WO2023246770A1 (zh) 由用户设备执行的方法以及用户设备
WO2024008076A1 (zh) 切换信息报告方法以及用户设备
WO2023241622A1 (zh) 由用户设备执行的方法、用户设备以及信息报告方法
WO2024017237A1 (zh) 由用户设备执行的方法以及用户设备
WO2024027704A1 (zh) 切换信息报告方法以及用户设备
WO2024067624A1 (zh) 信息报告方法以及用户设备
WO2024094056A1 (zh) 信息报告方法以及用户设备
WO2022257974A1 (zh) 切换信息报告方法、用户设备以及通信系统
WO2023005967A1 (zh) 切换信息报告方法以及用户设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23826417

Country of ref document: EP

Kind code of ref document: A1