CN117835313A

CN117835313A - Information reporting method and user equipment

Info

Publication number: CN117835313A
Application number: CN202211186147.5A
Authority: CN
Inventors: 常宁娟; 刘仁茂
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2024-04-05
Also published as: WO2024067624A1

Abstract

The disclosure provides an information reporting method and user equipment. The information reporting method comprises the following steps: after the UE in double connection successfully completes the primary and secondary cell PSCell change process, the UE triggers the record of a PSCell change report SPCR; the UE judges whether the PScell changing process is accompanied with the switching of a primary cell PCell; the UE includes first reporting information in the SPCR when it is determined that the PSCell changing procedure is accompanied by handover of the primary cell PCell, and includes second reporting information in the SPCR when it is determined that the PSCell changing procedure is not accompanied by handover of the primary cell PCell.

Description

Information reporting method and user equipment

Technical Field

The present disclosure relates to the field of wireless communication technologies, and more particularly, to an information reporting method of primary and secondary cell related information under a dual connection condition and a corresponding user equipment.

Background

A new study of Release 18 technical standards was approved at the third Generation partnership project (3rd Generation Partnership Project:3GPP) RAN#94e, 12, month 2021 (see non-patent literature: 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). The aim of this project was to further enhance the network data collection process in the NR system based on release 17 to better achieve the aim of self-organizing self-optimizing networks and minimizing drive tests. One of the specific technologies studied is to realize information reporting under the successful change scenario of the primary and secondary cells (Primary Secondary cell group Cell, PSCell).

The present disclosure proposes a solution to the information reporting problem of how to implement PSCell in NR systems.

Disclosure of Invention

An object of embodiments of the present disclosure is to propose a solution to the problem of how to implement PSCell information reporting in NR systems. More specifically, the present disclosure proposes a solution to the PSCell change information recording problem after successfully performing a PSCell change procedure when a UE configures a dual connection (Dual Connectivity, DC) in an NR system. The embodiment of the disclosure provides an information reporting method executed in user equipment and corresponding user equipment.

According to a first aspect of the present disclosure, there is provided an information reporting method, including: after the UE in double connection successfully completes the primary and secondary cell PSCell change process, the UE triggers the record of a PSCell change report SPCR; the UE judges whether the PScell changing process is accompanied with the switching of a primary cell PCell; the UE includes first reporting information in the SPCR when it is determined that the PSCell changing procedure is accompanied by handover of the primary cell PCell, and includes second reporting information in the SPCR when it is determined that the PSCell changing procedure is not accompanied by handover of the primary cell PCell.

In the information reporting method of the first aspect, preferably, the first reporting information is target PCell information, and the second reporting information is current PCell information.

In the information reporting method of the first aspect, preferably, the first reporting information is a UE identity C-RNTI for a target MCG or a target PCell, and the second reporting information is a UE identity C-RNTI for a current MCG or a current PCell.

In the information reporting method of the first aspect, preferably, when the RRC message for triggering PSCell change includes both synchronous reconfiguration for SCG and synchronous reconfiguration for MCG, the UE determines that the PSCell change procedure is accompanied by the PCell handover.

In the information reporting method of the first aspect, preferably, the PCell information includes one or more of a physical cell identity PCI, a cell carrier frequency ARFCN, a global cell identity GCI, and a tracking area code TAC.

In the above information reporting method according to the first aspect, it is preferable that the UE includes the first report information or the second report information in the SPCR when a PSCell change command of the PSCell change procedure is received by SRB1, and the UE does not include the first report information and the second report information in the SPCR when the PSCell change command of the PSCell change procedure is received by SRB 3.

In the information reporting method of the first aspect, preferably, when the UE determines that the PSCell change procedure is initiated by a master base station MN, the UE includes the first report information or the second report information in the SPCR.

In the information reporting method of the first aspect, preferably, the UE determines whether to include the first reporting information or the second reporting information in the SPCR based on a corresponding SPCR configuration.

In the information reporting method of the first aspect, preferably, in a case that the UE receives a UEInformationRequest message from a network side, where the UEInformationRequest message carries an instruction/request for requesting the UE to report the saved SPCR, the UE includes the saved content in the SPCR in a UEInformationResponse message, and sends the UEInformationResponse message to the network side.

According to a second aspect of the present disclosure, there is provided a user equipment, UE, comprising: a processor; and a memory storing instructions; wherein the instructions, when executed by the processor, perform the information reporting method according to the context.

Drawings

For a more complete understanding of the present disclosure and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic flowchart showing an information reporting method in embodiment 1 of the present disclosure.

Fig. 2 is a schematic flowchart showing an information reporting method in embodiment 2 of the present disclosure.

Fig. 3 is a block diagram showing a user equipment UE to which the present disclosure relates.

In the drawings, the same or similar structures are identified by the same or similar reference numerals.

Detailed Description

Other aspects, advantages, and salient features of the present disclosure will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the present disclosure.

In the present disclosure, the terms "include" and "comprise," along with their derivatives, are intended to be inclusive, rather than limiting; the term "or" is inclusive, meaning and/or.

In this specification, the various embodiments described below for the purpose of describing the principles of the present disclosure are illustrative only and should not be construed in any way as limiting the scope of the disclosure. The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the present disclosure defined by the claims and their equivalents. The following description includes numerous specific details to aid in understanding, but these details should be construed as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness. Furthermore, the same reference numerals are used for similar functions and operations throughout the drawings.

Various embodiments in accordance with the present disclosure are described in detail below with a long term evolution system (Long Term Evolution, LTE)/NR mobile communication system and its subsequent evolutions as an example application environment. However, it should be noted that the present disclosure is not limited to the following embodiments, but is applicable to still other wireless communication systems. Unless specifically stated otherwise, in the present disclosure, concepts of cells and base stations may be interchanged; the LTE system is also used to refer to the 5G and later LTE systems (e.g. called the LTE system, or the LTE system that may be connected to the 5G core network), while LTE may be replaced with evolved universal terrestrial radio access (Evolved Universal Terrestrial Radio Access, E-UTRA) or evolved universal terrestrial radio access network E-UTRAN. The present disclosure relates to primary cell PCell changes and primary secondary cell PSCell changes. Wherein the primary cell PCell change is also referred to as handover. The source Primary Cell may also be referred to as a source Primary base station, or source Primary beam (beam), source transmission point (Transmission point, TRP), source Primary Cell (PCell), source Primary Cell group (Master Cell Group, MCG); the target cell may also be referred to as a target base station, or a target beam, a target transmission point, a target primary cell PCell, a target primary cell group MCG. The source PSCell may also be referred to as a source secondary base station, a set of source secondary cells (Secondary Cell Group, SCG), a source beam (beam), a source transmission point (Transmission point, TRP), or a source cell; the target PSCell may also be referred to as a target secondary base station, a target beam, a target transmission point, a target secondary cell group SCG, or a target cell. In the present disclosure, a handover command is used to trigger a UE to perform handover, and a PSCell change command is used to trigger the UE to perform PSCell change. In the NR system, is an RRC reconfiguration message containing a synchronization reconfiguration (reconfigurationwisync) information element, and in particular, the handover command is an RRC reconfiguration message containing a synchronization reconfiguration (reconfigurationwisync) information element for MCG; the PSCell change command is an RRC reconfiguration message containing a synchronization reconfiguration (reconfigurationwisync) information element for SCG. At this time, the handover may also be referred to as a synchronous reconfiguration of the MCG or a synchronous reconfiguration of the PCell; the PSCell change may also be referred to as a synchronous reconfiguration of SCG or a synchronous reconfiguration of PSCell. The synchronization reconfiguration information element may include configuration information of the target cell, for example, target cell identification, target cell frequency, common configuration of the target cell such as system information, random access configuration used by the UE to access the target cell, security parameter configuration of the UE in the target cell, radio bearer configuration of the UE in the target cell, and the like. Cancel, release, delete, empty, clear, etc. may be replaced. Execution, use, and application alternatives. Configuration and reconfiguration may be replaced. Monitoring (monitor) and detection (detect) may be substituted. The PCell change and PSCell change are sometimes collectively referred to as a cell change.

The following describes processes or concepts in the prior art to which the present disclosure relates.

Cell change configuration in NR system:

in NR systems, 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 in 3GPP technical standard protocol 38.331 for details):

-measurement configuration: for configuring intra-frequency, inter-frequency and inter-radio access technology measurements performed by the UE. Such as measurement object configuration, measurement report configuration, measurement gap (gap) configuration, etc.

Cell group configuration (cellGroupConfig information element) for configuring secondary cell groups. Including radio link control (Radio Link Control, RLC) bearer configuration (RLC-beardetoraddmodlist information element and RLC-beardetorelesellist information element) corresponding to the data radio bearer/signaling radio bearer, medium access control (Medium Access Control, MAC) configuration (MAC-cell group configuration), physical layer configuration, secondary cell addition/modification/release configuration, special cell (SpCell) configuration, and the like. The SpCell configuration includes a cell index number, cell change information (reconfiguration wishsync information element), a radio link failure related timer and constant configuration, a radio link detection (Radio Link Monitoring, RLM) configuration, a special cell dedicated configuration, and the like. The reconfiguration wisync information element contains Cell change related information such as common information of serving Cell configuration, cell radio network temporary identifier (Cell-Radio Network Temprory Identifier, C-RNTI) of the UE in the target Cell, configuration of a Cell change procedure monitoring timer T304, random access dedicated configuration for random access procedure to the target Cell, and the like.

-radio bearer configuration (radiobearconfig information element) for configuring the service data application protocol layer (Service Data Application Protocol, SDAP) and the packet data convergence protocol layer (Packet Data Convergence Protocol, PDCP) of the data radio bearer (Data Radio Bearer, DRB) and/or the signaling radio bearer (Signaling Radio Bearer, SRB).

-key update configuration.

Double connection (Dual Connectivity):

in order to improve the data transmission efficiency of the UE, the UE establishes links with two base stations at the same time, i.e. the radio resources used by the UE are provided by different schedulers located at the two base stations. The Radio access between the two base stations and the UE may be of the same or different standards (Radio AccessTechnology, RAT), such as NR, or one is NR and one is LTE also called evolved universal terrestrial Radio access (Evolved Universal Terrestrial Radio Access, E-UTRA). Of these two base stations, one is called Master Node (MN) or MgNB, meNB, and the serving cell group under the Master base station is called Master cell group (Master Cell Group, MCG); the other is called Secondary Node (SN) or SgNB, seNB, and the group of serving cells under the Secondary base station is called Secondary cell group (Secondary Cell Group, SCG). When the primary base station is LTE and the secondary base station is NR, DC is referred to as EN-DC (using a 4G core network) or NGEN-DC (using a 5G core network); DC when both the primary and secondary base stations are NR is referred to as NR-DC. The MCG includes a Primary Cell (PCell) and optionally one or more Secondary cells (scells). The PCell operates on a primary frequency, and the UE performs an initial connection establishment procedure or a connection re-establishment procedure through the primary frequency. The SCG comprises one Primary SCG Cell (PSCell) and optionally one or more scells. PSCell refers to an SCG cell in which a UE performs random access when performing a synchronization reconfiguration procedure of an SCG. PCell and PSCell are also collectively referred to as a special cell SpCell. When DC is configured, DRBs and SRBs supporting the UE are configured as split bearers (split bearers). When not configured as split SRBs, SRB1 and SRB2 are transported over the MCG path. In addition, when the DC is configured, SRB3 may also be established for SN for transmitting configuration associated with SCG between SN and UE, etc. Both the establishment and release of SRB3 are determined by SN.

PSCell change procedure in NR system:

the change of PSCell may be initiated by MN or SN. The MN or SN may initiate a change of the PSCell based on a measurement result of the source PSCell or a neighboring cell reported by the UE or a load of the neighboring cell. During a PSCell change with MN participation (whether MN initiated or SN initiated), a cell change command for PSCell is contained in an RRC reconfiguration message for SRB1 to the UE. The PSCell change command is an RRC reconfiguration message for SCG. When sent to a UE over the MCG link, is typically contained in an mrdc-second cellgroupconfig information element or an hr-second cellgroupconfig information element and is nested in the RRC reconfiguration message of SRB 1. If the PSCell is changed without the participation of MN, such as intra-SN PSCell changing scene, SN may autonomously generate RRC reconfiguration message of PSCell changing command and send the RRC reconfiguration message to UE through SRB3 of SCG link.

The UE that receives the PSCell change command immediately applies the configuration of the cell change command to perform PSCell change, including a random access procedure to PSCell. The UE detects a cell change process through a timer T304, and when the cell change process is initiated, the UE starts the T304 timer; when the cell change procedure is completed (the random access procedure is successfully completed), the UE stops the timer T304; when T304 times out, the UE considers the PSCell change failure or the synchronization reconfiguration failure.

SCG failure information reporting

The information reporting of SCG failure in the current NR system is realized through an SCG failure information flow. When the SCG failure occurs, if the MCG and the SCG transmission are not suspended (suspended), the UE initiates an SCG failure information flow to report the failure of the SCG to the network side. SCG failure includes the following cases: RLF monitoring of SCG, beam failure monitoring of PSCell when SCG is deactivated, synchronization reconfiguration failure of SCG, SCG configuration failure, and receipt of an associated integrity check failure indication from the underlying SRB3, etc. In the SCG failure process, the UE typically suspends 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. Because the connection between the UE and the MCG is normal at this time, according to the content in the SCGFailureInformation, the MCG may send an RRC message containing the synchronous reconfiguration of the SCG to the UE, trigger the change of the PSCell, and restore the SCG link; or sending an RRC message containing an indication to release the SCG link to the UE to release the SCG. In addition, the network side can also be used for SCG mobility optimization based on information in SCGFailureinformation. The information in SCGFai information in version R17 includes: the method includes the steps of failure type, measurement results corresponding to measurement configuration associated with SCG, measurement results corresponding to measurement configuration associated with MCG, location information, failure PSCell identification faildePSCellId, previous PSCell identification previousPSCellId, time CGfailure used for indicating time elapsed since receiving RRC reconfiguration message of synchronous reconfiguration of the latest SCG, and information perRAInfoList related to the executed random access procedure.

Successful handover report:

a report of handover information upon successful handover is introduced in the NR system of release 17. Here handover refers to PCell change or synchronous reconfiguration of PCell. The handover command refers to an RRC reconfiguration message containing a synchronization reconfiguration information element for the MCG. The handover information report at the time of successful handover is also simply referred to as a successful handover report (Successful Handover Report, SHR). This is because performing network optimization in NR systems solely by radio link failure RLF reporting in existing mechanisms may make the data collection procedure lengthy, whereas handover information reporting allows the network side to obtain a sufficient number of samples in the mobility procedure faster when the handover is successful. Second, even for successful handover scenarios, there is room for further optimization of its mobility parameters. For SHR content, one or more of the following may be included: a source cell identifier of the handover; a target cell identifier of the handover; measurement results of the source cell or the target cell switched; neighbor cell measurement results; indicates why the SHR was triggered (i.e., which trigger condition was met), etc. The handover success includes an RRC reconfiguration complete message for responding to a handover command RRC reconfiguration message to the target base station to be successfully transmitted or the MAC layer to successfully complete a random access procedure to the target base station. The network side needs to configure trigger conditions (such as threshold values corresponding to T310, T312 and T304) of successful handover report to the UE, and the UE records the handover information of the successful handover only if one or more configured trigger conditions are met (such as the running value of T310 or T312 of the source cell exceeds the configured corresponding threshold value when a handover command is received, and the running value of T304 when the handover is completed successfully exceeds the configured corresponding threshold value). The trigger condition related to the source cell, such as a T310 threshold or a T312 threshold, is configured by the source cell to the UE, and the trigger condition related to the target cell, such as a T304 threshold, is configured by the target cell to the UE. The UE may inform the network side of the successful handover report (as indicated by the success ho-InfoAvailable information element) available on it through an RRC message. After receiving the indication, the network side can request the UE to report the saved successful handover information report through an RRC message (such as a success HO-ReportReq indication in a UE information request message). The UE will Report the saved radio link failure Report (UE information response ho-Report in the UE information response message) to the network side in a response RRC message. This procedure becomes a UE information (UE information) procedure. The successful handover report stored on the UE may be stored for a maximum of 48 hours.

As described above, the SHR mechanism at PCell handover is standardized in the NR system of release 17 to further optimize the robustness of movement in handover scenarios. One of the research targets in release 18 is to introduce a PSCell change report (Successful PSCell Change Report, SPCR) under a PSCell change scene, and report the information of a successful PSCell change process to the network side, so that the network side can optimize and adjust the parameters of PSCell change to improve the mobility robustness of PSCell. In the present disclosure, it is assumed that the reporting procedure of the SPCR is similar to SHR, that is, if it is determined that an SPCR is to be generated by a UE that successfully performs a PSCell change procedure, the UE stores the content of the generated SPCR in a corresponding UE variable, and indicates to a network side that there is the stored SPCR thereon through an RRC message; after receiving the request of the network side for indicating the network side to report the SPCR, the UE reports the saved SPCR to the network side by including the saved SPCR in the RRC message. Unlike the handover scenario, in the PSCell change scenario, in addition to the participation of the source PSCell and the target PSCell, in the MN-triggered SN modification procedure or the MN-triggered SN change procedure, the MN also participates in the procedure in addition to the participation of the source PSCell and the target PSCell. Then in the network optimization process corresponding to a successful PSCell change report, there is a possibility that in addition to delivering the SPCR to the SN, the SPCR is delivered to the MN to enable the MN to participate in the mobile robustness optimization process of the PSCell. How to implement the SPCR in a scenario where the PSCell changes are accompanied by the PCell changes can be delivered to the relevant MN when considering the mobile robustness optimization problem of the MN participating in the PSCell is one of the problems of interest in this disclosure.

Furthermore, consider the following scenario: the UE connected to the primary base station MN1 successfully performs a change from PSCell1 to PSCell2, and generates and saves the SPCR for the time of the change of the secondary PSCell. A radio link failure (Radio Link Failure, RLF) of the UE in PSCell2 occurs shortly after the PSCell change is successful. When RLF of PSCell2 occurs, UE sends SCGFailureInformation information to current primary base station MN1 to inform MN1 of this failure event. If the UE has not reported the SPCR stored previously to the MN1 before, there is a possibility that the UE reports the SPCR to the network side later, and the MN connected when the UE reported the SPCR has changed to another base station MN2. MN2 needs to deliver the received SPCR to the relevant base station MN1. In this scenario, the UE performs a successful PSCell change first and then RLF occurs on the target PSCell shortly, which should be actually an unsuccessful PSCell change event. For this event, as described above, MN1 will receive two reports for the same event, one being a failure report in the SCGFailureInformation and one being the SPCR. In practice, this event should be a premature PSCell change or a PSCell change to wrong cell event, that is, the SPCR report itself cannot indicate that this PSCell change was successful. To achieve such analysis and conclusion, MN1 needs to be able to correlate the two reports after receiving them, and thus determine that the two reports are for the same PSCell change event of the same UE. In scenario 1, the MN1 receives two reports at different times, and the SPCR is forwarded to the other station MN2. How the MN makes decisions about correlating these two reports based on the information carried in the two reports is also a problem of concern for the present disclosure.

The embodiments described below provide solutions to the above problems, and embodiments are not mutually exclusive, embodiments may be combined, or some concepts or definitions may be used between embodiments unless specifically stated.

Example 1

This embodiment presents an information reporting method performed on a UE. By the method in this embodiment, the UE may determine whether to report the PCell information to the network side by carrying the PCell information in the successful PSCell change report SPCR based on whether the PSCell change is accompanied by the PCell change. The PCell information contained in the SPCR by the UE allows the base station retrieving 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 may make adjustments and optimizations of PSCell change parameters based on information in the received SPCR.

Hereinafter, embodiment 1 of the present disclosure will be described in detail. Fig. 1 is a schematic flowchart showing an information reporting method in embodiment 1 of the present disclosure, and as shown in fig. 1, the information reporting method in embodiment 1 of the present disclosure may include the following steps.

Step 101: after a PSCell change procedure is successfully completed, the UE triggers the recording of the SPCR, i.e., the UE determines to save the SPCR information corresponding to the PSCell change procedure in the corresponding UE variable.

The successful completion of a PSCell change procedure generally refers to that the random access procedure triggered in the synchronization reconfiguration procedure for PSCell/SCG is successfully completed, or that a response message, i.e. an RRC reconfiguration complete message, for responding to a PSCell change command, i.e. an RRC reconfiguration message including the synchronization reconfiguration of SCG, is sent.

Optionally, the UE triggers the recording of the SPCR, similar to the SHR mechanism in release 17, when the configured SPCR trigger condition is met. I.e. the UE determines whether to save the SPCR information corresponding to the procedure according to whether the trigger condition in the SPCR configuration is satisfied. For example, the trigger condition may be a T310 threshold for PSCell, a T312 threshold for PSCell, or a T304 threshold for SCG. In one form the threshold is a percentage threshold. For example, when the UE receives the PSCell change command and the ratio of the running value of T310 to the configuration value of T310 of the source PSCell before performing synchronous reconfiguration of PSCell exceeds the configured threshold, the UE determines to save the SPCR information corresponding to the procedure.

Step 102: the UE judges whether the PSCell changing process is accompanied with the switching of the PCell of the main cell at the same time, if so, the UE comprises target PCell information in the stored SPCR information; if not, the UE includes information of the current PCell in the stored SPCR information, that is, primary cell PCell information associated with the primary cell before performing synchronous reconfiguration of the PSCell when a PSCell change command is received.

Whether the PSCell change procedure is accompanied by handover of the primary cell PCell or not refers to whether the RRC message for triggering PSCell change contains both a synchronization reconfiguration information element for SCG and a synchronization reconfiguration information element for MCG. The RRC message for triggering PSCell change includes both a synchronous reconfiguration for SCG and a synchronous reconfiguration for MCG, and the RRC message is considered to trigger PSCell change and PCell handover at the same time, i.e., the PSCell change procedure is accompanied by PCell handover.

The target PCell refers to a cell corresponding to a cell identifier included in a synchronization reconfiguration information element for MCG.

Preferably, the PCell information is one or more of a cell identity corresponding to the PCell, such as a physical cell identity (Physical Cell Identity, PCI), a cell carrier frequency (Absolute Radio Frequency Channel Number, ARFCN), a global cell identity (Global Cell Identity, GCI), and a tracking area code (Tracking Area Code, TAC). Alternatively, the PCell information further includes measurement results of the PCell, i.e., information for characterizing the PCell downlink signal quality. Optionally, the measurement result is a latest measurement result obtained by the UE before performing synchronous reconfiguration of the PSCell upon receiving the PSCell change command.

Optionally, in one implementation 1, when the PSCell change command is received through SRB1, the UE includes PCell information thereof in the saved SPCR information. Optionally, the PSCell change command is received through SRB1, and the RRC reconfiguration message for synchronous reconfiguration of PSCell is received through SRB1 in mrdc-second cell group. In this implementation, when the PSCell change command is received through SRB3, the UE does not include its PCell information in the stored SPCR information.

Optionally, in one implementation 2, when the UE determines that the PSCell change procedure is initiated by the MN, the UE includes corresponding PCell information in the stored SPCR information. The UE determines whether the PSCell change procedure is initiated by the MN based on a first indication received from the network side. The first indication is used to indicate whether the PSCell change procedure was initiated by the MN. For example, if the first indication is set to MN, the UE considers the PSCell change procedure to be initiated by MN. The first indication may be included in the corresponding PSCell change command or in an 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.

Optionally, in one implementation 3, the UE determines whether to include the corresponding PCell information in the saved SPCR information based on the corresponding SPCR configuration. In this implementation, both the MN and SN may configure the SPCR configuration of the UE. Optionally, if only one of the MN or the SN configures the SPCR configuration for the UE, the UE determines that if the corresponding SPCR configuration is configured by the MN when generating the SPCR, the UE includes corresponding PCell information in the SPCR. Optionally, when the UE generates the SPCR, it is determined that if the SPCR configuration corresponding to the trigger reason for triggering the SPCR is configured by the MN, the UE includes corresponding PCell information in the SPCR.

Obviously, the method further includes that the UE receives a PSCell change command from the network side before step 101, and applies the command to perform synchronous reconfiguration to the PSCell.

Alternatively, this embodiment may also be applied to the case of PSCell addition, that is, the PSCell change may also be PSCell addition.

Alternatively, this embodiment may also be applied to the case of Conditional PSCell change (Conditional PSCellChange, CPC), also referred to as Conditional reconfiguration for SCG.

Example 2

This embodiment presents an information reporting method. By the method of the embodiment, the UE can report the C-RNTI for the MCG to the network side in the successful PSCell change report SPCR. The C-RNTI and other information (such as a source PSCell identifier and a target PSCell identifier) for the MCG are contained in the SPCR by the UE, so that a base station retrieving the SPCR from the UE can be associated with the corresponding information (such as the source PSCell identifier and the target PSCell identifier, which are set as failure types of synchronous reconfiguration failure) in the SCGFairuteinformation associated with the C-RNTI according to the C-RNTI and other information carried in the SPCR, and the SPCR report and the SCGFairuteinformation are determined to be associated to the same PSCell change event of the same UE. The network side can determine that the PSCell change event is an event that the PSCell change is early or the PSCell is changed to the wrong cell, and the PSCell change is not successful, and thus more accurate adjustment and optimization of the mobility parameters of the PSCell change are performed.

Hereinafter, embodiment 2 of the present disclosure will be described in detail. Fig. 2 is a schematic flowchart showing the information reporting method in embodiment 2 of the present disclosure, and as shown in fig. 2, the information reporting method in embodiment 2 of the present disclosure may include the following steps.

Step 201: after a PSCell change procedure is successfully completed, the UE triggers the recording of the SPCR, i.e., the UE determines to save the SPCR information corresponding to the PSCell change procedure in the corresponding UE variable.

Step 202: the UE includes a UE identity C-RNTI for the MCG, or C-RNTI for the PCell, in the stored SPCR information. Optionally, the UE determines whether the PSCell changing process is accompanied with the switching of the PCell of the primary cell, if yes, the UE includes a UE identifier C-RNTI for the target MCG or the target PCell in the stored SPCR information; if not, the UE includes the C-RNTI for the current MCG or PCell in the stored SPCR information, that is, the C-RNTI corresponding to the MCG or PCell associated before performing the synchronous reconfiguration of the PSCell when the PSCell change command is received.

The C-RNTI for the target MCG or the target PCell refers to a C-RNTI contained in a synchronization reconfiguration information element for the MCG.

Optionally, in one implementation 1, when the PSCell change command is received through SRB1, the UE includes its C-RNTI for the MCG in the saved SPCR information. Optionally, the PSCell change command is received through SRB1, and the RRC reconfiguration message for synchronous reconfiguration of PSCell is received through SRB1 in mrdc-second cell group. In this implementation, when the PSCell change command is received over SRB3, the UE does not include its C-RNTI for the MCG in the saved SPCR information.

Optionally, in one implementation 2, when the UE determines that the PSCell change procedure is initiated by the MN, the UE includes a C-RNTI for the MCG in the stored SPCR information. The UE determines whether the PSCell change procedure is initiated by the MN based on a first indication received from the network side. The first indication is used to indicate whether the PSCell change procedure was initiated by the MN. For example, if the first indication is set to MN, the UE considers the PSCell change procedure to be initiated by MN. The first indication may be included in the corresponding PSCell change command or in an 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.

Optionally, in one implementation 3, the UE determines whether the C-RNTI for the MCG is included in the saved SPCR information based on the corresponding SPCR configuration. In this implementation, both the MN and SN may configure the SPCR configuration of the UE. Optionally, if only one of the MN or SN configures the SPCR configuration for the UE, the UE determines that if the corresponding SPCR configuration is configured by the MN when generating the SPCR, the UE includes the C-RNTI for the MCG in the SPCR. Optionally, when the UE generates the SPCR, it is determined that if the SPCR configuration corresponding to the trigger reason for triggering the SPCR is configured by the MN, the UE includes the C-RNTI for the MCG in the SPCR.

Obviously, the method further includes, before step 201, that the UE receives a PSCell change command from the network side, and applies the command to perform synchronous reconfiguration to the PSCell.

Alternatively, this embodiment may also be applied to the case of conditional PSCell changes (Conditional PSCell Change, CPC), also referred to as conditional reconfiguration for SCG.

Example 3

This embodiment presents a PSCell change information reporting method performed on a UE. By the method in this embodiment, the UE may report the related information to the base station in the SPCR, so as to provide more accurate PSCell change information to the network side. This embodiment shows a method for reporting the signaling procedure when the UE reports the information described in embodiment 1 and embodiment 2 through the RRC procedure.

Step 301: the UE receives a ueinfo request message from the network side, which carries an indication/request for requesting the UE to report the saved SPCR.

Step 302: the UE includes the saved content in the SPCR in a UEInformationResponse message, and sends the UEInformationResponse message to the network side. The SPCR report included in the ueinfo response message includes at least the PCell related information in the foregoing embodiment 1 or the C-RNTI information for MCG in embodiment 2.

Example 4

This embodiment presents a PSCell change information reporting method. The UE only reports the saved SPCR to the site associated with the information in the SPCR, so that the signaling overhead caused by unnecessary SPCR reporting is avoided.

In this embodiment, if there is a stored available SPCR on the UE, and 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, the UE sends a second indication to the network side, where the second indication is used to indicate that there is a stored available SPCR on the UE. The network side determines that there is an associated SPCR on the UE based on the indication, so that the SPCR is obtained from the UE through a UEInformation procedure (as described in embodiment 3).

The current serving cell of the UE is one or more of a PCell of the UE (a target PCell or a source PCell in a PSCell change scenario accompanying a PCell change), a source PSCell, and a target PSCell. The change of the source PSCell and the target PSCell, PSCell in the PSCell change event recorded in the SPCR indicated by the cell corresponding to the PSCell change event associated with the information in the SPCR is accompanied by one or more of the target PCell and the source PCell at the time of the PCell change.

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 based on whether the identity of the current serving cell is the same as the identity of the related cell recorded in the SPCR.

Example 5

This embodiment illustrates the user equipment UE of the present disclosure. Fig. 3 is a block diagram showing a user equipment UE according to the present invention. As shown in fig. 3, the user equipment UE50 comprises a processor 501 and a memory 502. The processor 501 may include, for example, a microprocessor, microcontroller, embedded processor, or the like. The memory 502 may include, for example, volatile memory (such as random access memory RAM), a Hard Disk Drive (HDD), non-volatile memory (such as flash memory), or other memory. The memory 502 has stored thereon program instructions. The instructions, when executed by the processor 501, may perform various methods of the mobile information reporting method and the like described in detail herein.

The method of the present disclosure and the apparatus involved have been described above in connection with the preferred embodiments. Those skilled in the art will appreciate that the methods shown above are merely exemplary. The methods of the present disclosure are not limited to the steps and sequences shown above. The base stations and user equipments shown above may comprise further modules, e.g. may also comprise modules that may be developed or developed in the future that may be used for base stations, MMEs, or UEs, etc. The various identifiers shown above are merely exemplary and are not limiting, and the present disclosure is not limited to specific cells as examples of such identifiers. Many variations and modifications may be made by one of ordinary skill in the art in light of the teachings of the illustrated embodiments.

The program running on the apparatus according to the present disclosure may be a program for causing a computer to realize the functions of the embodiments of the present disclosure by controlling a Central Processing Unit (CPU). The program or information processed by the program may be temporarily stored in a volatile store such as a random access memory RAM, a Hard Disk Drive (HDD), a nonvolatile store such as a flash memory, or other memory system.

A program for realizing the functions of the embodiments of the present disclosure may be recorded on a computer-readable recording medium. The corresponding functions can be realized by causing a computer system to read programs recorded on the recording medium and execute the programs. The term "computer system" as used herein may be a computer system embedded in the device and may include an operating system or hardware (e.g., peripheral devices). The "computer-readable recording medium" may be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium in which a program is stored dynamically at a short time, or any other recording medium readable by a computer.

The various features or functional modules of the apparatus used in the embodiments described above may be implemented or performed by circuitry (e.g., single-chip or multi-chip integrated circuits). Circuits designed to perform the functions described herein 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 device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The circuit may be a digital circuit or an analog circuit. Where new integrated circuit technologies are presented as an alternative to 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.

Further, the present disclosure is not limited to the above-described 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 may be used as terminal devices or communication devices such as AV devices, kitchen devices, cleaning devices, air conditioners, office devices, vending machines, and other home appliances, etc.

As above, the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings. However, the specific structure is not limited to the above-described embodiments, and the present disclosure also includes any design modifications without departing from the gist of the present disclosure. In addition, various modifications can be made to the present disclosure within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments are also included in the technical scope of the present disclosure. Further, the components having the same effects described in the above embodiments may be replaced with each other.

Claims

1. An information reporting method, comprising:

after the UE in double connection successfully completes the primary and secondary cell PSCell change process, the UE triggers the record of a PSCell change report SPCR;

the UE judges whether the PScell changing process is accompanied with the switching of a primary cell PCell;

in case it is determined that the PSCell change procedure is accompanied by handover of a primary cell PCell, the UE includes first reporting information in the SPCR,

if it is determined that the PSCell change procedure is not accompanied by handover of the primary cell PCell, the UE includes second report information in the SPCR.

2. The information reporting method as claimed in claim 1, wherein,

the first reporting information is target PCell information, and the second reporting information is current PCell information.

3. The information reporting method as claimed in claim 1, wherein,

the first reporting information is a UE identity C-RNTI for the target MCG or the target PCell, and the second reporting information is a UE identity C-RNTI for the current MCG or the current PCell.

4. The information reporting method as claimed in any one of claims 1 to 3, wherein,

when the RRC message for triggering PSCell change includes both synchronous reconfiguration for SCG and synchronous reconfiguration for MCG, the UE determines that the PSCell change procedure is accompanied by the PCell handover.

5. The information reporting method according to claim 1 or 2, wherein,

the PCell information includes one or more of a physical cell identity PCI, a cell carrier frequency ARFCN, a global cell identity GCI, and a tracking area code TAC.

6. The information reporting method as claimed in claim 1, wherein,

when a PSCell change command of the PSCell change procedure is received through SRB1, the UE includes the first report information or the second report information in the SPCR,

when a PSCell change command of the PSCell change procedure is received by SRB3, the UE does not include the first report information and the second report information in the SPCR.

7. The information reporting method as claimed in claim 1, wherein,

and when the UE judges that the PScell changing process is initiated by a master base station MN, the UE comprises the first report information or the second report information in the SPCR.

8. The information reporting method as claimed in claim 1, wherein,

the UE determines whether to include the first reporting information or the second reporting information in the SPCR based on a corresponding SPCR configuration.

9. The information reporting method as claimed in claim 1, wherein,

and under the condition that the UE receives a UEInformationRequest message from a network side, the UEInformationRequest message carries an instruction/request for requesting the UE to report the saved SPCR, the UE includes the saved content in the SPCR in a UEInformationResponse message and sends the UEInformationRequest message to the network side.

10. A user equipment, comprising:

a processor; and

a memory having instructions stored thereon;

wherein the instructions, when executed by the processor, cause the user equipment to perform the information reporting method according to any one of claims 1-9.