Mobility information reporting method and user equipment

Abstract

The present disclosure provides a mobility information reporting method and a user equipment (UE). The mobility information reporting method comprises: the UE creates an item for a primary secondary cell group cell (PSCell) or an item for a primary cell (PCell) in a mobility history information (MHI) variable VarMobilityHistoryReport; and upon determining that a secondary cell group (SCG) has been deactivated in a previous PSCell or a previous PCell, the UE includes SCG activation / deactivation related information in the corresponding item, wherein the SCG activation / deactivation related information is recorded according to different PSCells or PCells.

Description

Mobile information reporting method and user equipment Technical Field

[0001] The present disclosure relates to the field of wireless communication technology, and more specifically, to a mobility information reporting method in a dual connectivity (DC) scenario and a corresponding user equipment. Background Art

[0002] Network optimization in wireless networks can achieve the goal of optimizing network performance. Data collection and analysis are typically performed on existing deployed and operational networks to identify factors affecting network quality. Network performance is then improved by modifying configured network parameters, adjusting network structure, and adjusting deployed equipment. Self-configuration and self-optimization networks (SON) refer to the process of automatically adjusting the network based on user equipment and / or base station measurements and performance measurements. The network can configure UEs to perform measurements for SON. SON functions include many aspects, such as the Automatic Neighbor Relation (ANR) function, which reduces the operator's burden of neighbor management; Mobility Load Balancing (MLB), which balances load between different cells; Mobility Robustness Optimization (MRO), which optimizes mobility performance; Random Access Channel Optimization, which optimizes random access channel parameters; and Radio Link Failure Reporting (RLFR), which optimizes coverage and MRO.

[0003] The 3rd Generation Partnership Project (3GPP) enhanced the mobile information reporting mechanism in the NR system of version 17, and introduced a mobile information reporting mechanism based on the change of the primary secondary cell (PSCell). The activation and deactivation functions of the secondary cell group (SCG) are implemented in the NR system of version 17. In order to better optimize the configuration of dual connectivity and the enabling of SCG activation / deactivation on the network side, one of the purposes of the SON work of version 19 is to enhance the mobile information reporting in the scenario that supports SCG activation / deactivation.

[0004] The purpose of the present disclosure is to implement a mobility information reporting mechanism based on SCG activation / deactivation in an NR system. Furthermore, a solution is proposed for the problem of how a UE records SCG activation / deactivation in a mobility information report when SCG deactivation occurs in a dual connectivity (DC) scenario. Summary of the Invention

[0005] The present disclosure aims to implement a mobility information reporting mechanism based on SCG activation / deactivation in a Release 19 NR system. Furthermore, a solution is provided for the problem of how a UE can record SCG activation / deactivation in a mobility information report when SCG deactivation occurs in a dual connectivity scenario. The present disclosure provides a mobility information reporting method implemented in a user equipment and corresponding user equipment.

[0006] According to the first aspect of the present disclosure, a mobility information reporting method is proposed, including: the user equipment UE creates a primary and secondary cell group cell PSCell item in the visitedPSCellInfoList information element in the mobility history information MHI variable VarMobilityHistoryReport; the UE includes SCG activation / deactivation related information in the item when it determines that the secondary cell group SCG has been deactivated when connected to the PSCell associated with the PSCell item; the SCG activation / deactivation related information is used to distinguish PSCell records.

[0007] In the mobile information reporting method of the first aspect above, it also includes that the SCG activation / deactivation related information is the first SCG information; the UE sets the first SCG information to the time spent in the SCG activation state in the previous PSCell when the UE is connected to the current PCell.

[0008] In the mobile information reporting method of the first aspect above, it also includes that, if the UE is configured with a PSCell, the UE includes an item of the current PSCell in the mobile history information MHI report in the UE information response UEInformationResponse message, and in the PSCell item, the first SCG information is set to the time spent in the SCG activation state in the current PSCell when the UE is connected to the current PCell.

[0009] In the mobile information reporting method of the first aspect mentioned above, it also includes that the UE includes the first SCG information in the PSCell item only when it determines that the value of the first SCG information is different from the value of the timeSpent field of the associated PSCell item.

[0010] In the mobile information reporting method of the first aspect above, it also includes that the SCG activation / deactivation related information is the SCG activation time percentage; the UE sets the SCG activation time percentage to the sum of the time spent in the SCG activation state in the previous PSCell when the UE is connected to the current PCell and the percentage of the time timeSpent spent in the previous PSCell when the UE is connected to the current PCell; and the UE includes the SCG activation time percentage in the associated PSCell item only when it determines that the value of the SCG activation time percentage is not 100%.

[0011] In the above-mentioned mobility information reporting method of the first aspect, it is also included that the SCG activation / deactivation related information is the number of times the SCG of the UE is deactivated in the previous PSCell.

[0012] According to the second aspect of the present disclosure, a mobility information reporting method is proposed, comprising: a user equipment UE creates a primary cell PCell item in a mobility history information MHI variable VarMobilityHistoryReport; the UE includes SCG activation / deactivation related information in the item when it determines that when connected to the PCell associated with the PCell item, dual connectivity DC is configured and the secondary cell group SCG has been deactivated; the SCG activation / deactivation related information is used to distinguish PCell records.

[0013] In the mobility information reporting method of the first aspect above, the SCG activation / deactivation related information is the time spent in the SCG activation state when the UE is connected to the previous PCell.

[0014] In the mobile information reporting method of the above-mentioned first aspect, it also includes, when the UE adds a PSCell item to the first PSCell list in the MHI variable, removing the oldest item in the second PSCell list in the PCell item from the oldest PCell item containing the PSCell list, and if the oldest PCell item contains the SCG activation / deactivation related information, the UE updates the SCG activation / deactivation related information.

[0015] According to a third aspect of the present disclosure, a user equipment (UE) is proposed, comprising: a processor; and a memory storing instructions; wherein the instructions, when executed by the processor, execute the mobility information reporting method described in the context.

[0016] Effects of the Invention

[0017] According to the present invention, a mobile information reporting method executed in a user equipment and a corresponding user equipment are provided, so that when the UE is configured with dual-connection DC and SCG deactivation is enabled, the UE determines how to record and report mobile history information containing SCG activation / deactivation related information, while reporting the corresponding valid SCG activation / deactivation information, further reducing the signaling overhead of UE mobile information reporting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] For a more complete understanding of the present disclosure and its advantages, reference will now be made to the following description taken in conjunction with the accompanying drawings, in which:

[0019] FIG. 1 is a schematic diagram showing a method of recording movement history information MHI in a conventional mechanism.

[0020] FIG2 is a block diagram showing a user equipment UE according to the present invention.

[0021] In the drawings, the same or similar structures are marked with the same or similar reference numerals. DETAILED DESCRIPTION

[0022] Other aspects, advantages, and salient features of the disclosure will become apparent to those skilled in the art from the following detailed description of exemplary embodiments of the disclosure, taken in conjunction with the accompanying drawings.

[0023] In this disclosure, the terms "include" and "including" and their derivatives mean inclusion without limitation; the term "or" is inclusive, meaning and / or.

[0024] In this specification, the various embodiments described below for describing the principles of the present disclosure are merely illustrative 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 intended to assist in a comprehensive understanding of the exemplary embodiments of the present disclosure as defined by the claims and their equivalents. The following description includes a variety of specific details to aid understanding, but these details should be considered merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. In addition, for the sake of clarity and brevity, descriptions of well-known functions and structures have been omitted. In addition, throughout the drawings, the same reference numerals are used for similar functions and operations.

[0025] The following describes multiple embodiments of the present disclosure using the Long Term Evolution (LTE) / NR mobile communication system and its subsequent evolutionary versions as example application environments. However, it should be noted that the present disclosure is not limited to the following embodiments, but is applicable to many other wireless communication systems. Unless otherwise specified, in the present disclosure, the concepts of cell, base station, and cell group can be interchangeable. The primary cell PCell, the primary base station MN, the primary cell group (MCG), the primary beam, and the primary transmission point (TRP) can be interchangeable. The primary and secondary cells PSCell, the secondary base station SN, the secondary cell group (SCG), the secondary beam, and the secondary transmission point (TRP) can be interchangeable. In the present disclosure, the PSCell addition and change command is used to trigger the UE to perform PSCell addition or change. In the NR system, the PSCell addition and change command is a radio resource control (RRC) message containing a synchronous reconfiguration (Reconfiguration with sync) information element for the SCG. Therefore, the addition or change of PSCell is equivalent to the synchronous reconfiguration of SCG or the synchronous reconfiguration of PSCell. The change or switching of the main cell PCell is equivalent to the synchronous reconfiguration of PCell. The PCell change command or switching command is an RRC message containing the synchronous reconfiguration information element for MCG. Among them, the synchronous reconfiguration information element may include the configuration information of the target cell, such as the target cell identifier, the target cell frequency, the public configuration of the target cell such as system information, the random access configuration used by the UE to access the target cell, the security parameter configuration of the UE in the target cell, the wireless bearer configuration of the UE in the target cell, etc. In the present disclosure, cancellation, release, deletion, clearing and clearing can be replaced. Execution, use and application can be replaced. Configuration and reconfiguration can be replaced. Monitoring (monitor) and detection (detect) can be replaced. Triggering and initiating can be replaced. The names of the information elements appearing in the embodiments of the present disclosure are not limited to the upper and lower case of the English letters in their names.

[0026] The following briefly describes the prior art involved in the embodiments of the present disclosure.

[0027] Dual connectivity (DC)

[0028] In the DC scenario, the UE can obtain wireless resources through two base stations at the same time. One of them is the master base station (Master Node, MN), which is the base station where the UE maintains the radio resource control (Radio Resource Control, RRC) connection and is accessed through the initial access process or the switching process; the other is called the secondary base station (Secondary Node, SN), which can provide additional wireless resources for the UE. For a UE, the MN can include one or more service cells, called the Master Cell Group (MCG), which includes a primary cell (PCell); the SN can also include one or more service cells, called the Secondary Cell Group (SCG), which includes a primary and secondary cell group cell / or a primary and secondary cell PSCell. PCell and PSCell can also be collectively referred to as special cells spCell. In this disclosure, SN and SCG, PSCell can be replaced, and MN and MCG, PCell can be replaced.

[0029] SCG activation / deactivation mechanism

[0030] The SCG activation and deactivation mechanism is introduced in version 17. By activating and deactivating the entire SCG cell group to adapt to the dynamically changing UE traffic volume / traffic rate, it is expected to further save the power overhead caused by unnecessary uplink and downlink transmission or link monitoring when the UE traffic volume is low.

[0031] Both MN and SN can request to activate or deactivate SCG. MN decides whether to activate or deactivate SCG and sends SCG activation / deactivation command to UE through RRC message of SRB1. When the RRC message (such as RRC reconfiguration message) received by UE from SRB1 contains scg-State information element (set to deactivated) (i.e., SCG deactivation command), UE considers SCG to be deactivated and performs SCG deactivation operation; otherwise, when the RRC message does not contain scg-State information element (i.e., SCG activation command), UE considers SCG to be activated and performs SCG activation operation. During the SCG deactivation 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 RRC that the SCG is deactivated, stops the RLM for the SCG if the radio link monitoring (RLM) and beam failure detection (BFD) related parameters are not configured (i.e., the bfd-and-RLM information element is not set to true), stops the timer T310 / T312 for the SCG, etc. During the SCG activation operation, the UE performs one or more of the following operations: considers the SCG to be activated, resumes the RLM for the SCG if the UE is configured with a deactivated SCG before receiving the activation command, and indicates to the lower layer of RRC that the SCG is activated.

[0032] 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. When the SCG is in the deactivated state (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 (CSI) of the PSCell used for the SCG, does not send the Uplink Shared Channel (UL-SCH) on the PSCell of the SCG, triggers random access on the PSCell that is not in the SCG, monitors the PDCCH on the PSCell that is not in the SCG, does not monitor the PDCCH of the PSCell used for the SCG, and sends the Physical Uplink Control Channel (PUCCH) on the PSCell that is not in the SCG. When the MAC layer of the UE receives the SCG activation indication from the RRC layer, it activates the SCG. When the SCG is in the activated state (PSCell is activated), the UE is allowed to send SRS on the PSCell of the SCG, report CSI for the PSCell of the SCG, trigger random access on the PSCell of the SCG, monitor PDCCH on the PSCell of the SCG, monitor PDCCH for the PSCell of the SCG, and allow PUCCH to be sent on the PSCell of the SCG. In the present disclosure, activation / deactivation of the SCG and activation / deactivation of the PSCell can be interchangeable.

[0033] Mobility information reporting mechanism in Release 17 NR system:

[0034] In the present disclosure, mobility history information, mobility information or mobility history report can be replaced with each other. In the NR system of version 16, the UE records the mobility history information (MHI) based on the PCell, and the MHI records the change information of the serving cell / primary cell (PCell) experienced by the UE. The MHI of the PSCell in the RRC connection state is introduced in the NR system of version 17. By obtaining the MHI of the UE, the network side can know the movement trajectory of the UE and determine the movement speed of the UE to a certain extent. When determining the mobility operations of the UE, such as the configuration of the switching parameters and the selection of the switching target cell, the network side can combine the obtained information for more optimized configuration, thereby ensuring the mobility performance of the UE.

[0035] When a UE in RRC idle state or RRC connected state changes its serving cell / primary cell, an entry VisitedCellInfo is added to the UE variable VarMobilityHistoryReport. An entry can contain a visitedCellId information element and a timeSpent information element. The visitedCellId information element records the cell identity (global cell identity or physical cell identity and the carrier frequency of the cell) of the previous serving cell / PCell (previous PCell), and the timeSpent information element records the time spent / spent in the cell. A VisitedCellInfo entry can also contain only a timeSpent information element, that is, it does not contain any cell identity. In this case, the entry records the length of time the UE is without a PCell / serving cell. For example, if the UE was previously in an out of service state or was using other access technologies (Radio Access Technology, RAT) when entering NR, the UE will also add an entry to the variable VarMobilityHistoryReport and use the timeSpent information element to record the time the UE was out of network.

[0036] In the existing MHI mechanism, the records of PCell and PSCell are associated with each other in a nested structure and saved in the same UE variable VarMobilityHistoryReport, as shown in Figure 1. The UE variable VarMobilityHistoryReport of version 17 contains the visitedCellInfoList information element and the visitedPSCellInfoList information element. Each item in the visitedCellInfoList information element records the time the UE has spent in a PCell and the identifier of this cell. It also records the information of one or more PSCells that the UE has recently experienced when connected to this PCell, namely the PSCell list (identified by the visitedPSCellInfoListReport or visitedPSCellInfoList information element). The PSCell list records the information of one or more PSCells that have recently been experienced when connecting to the current PCell (PSCell identifier and the time spent timeSpent, each PSCell item is identified by VisitedPSCellInfo). Similar to the mobility information of the PCell, the PSCell identifier in a PSCell item may not necessarily exist, and is used to record the period of time that the UE is in a DC-free state.

[0037] The 3GPP protocol defines a maximum number of MHI items stored by the UE, such as 16. When the UE performs the above-mentioned operation of adding a new item, if the number of stored items has reached the maximum value, the UE deletes the oldest item in the stored MHI items when adding the new item.

[0038] For a UE in the RRC connected state, if the UE supports preserving MHI and there is an available MHI in the VarMobilityHistoryReport variable, the UE includes an indication (mobilityHistoryAvail information element) in an uplink RRC message (such as RRC Establishment Complete, RRC Recovery Complete, or RRC Reconfiguration Complete) to inform the base station that it has a stored MHI, and sets the value of this information element to TRUE. The base station requests the UE to report the stored MHI by carrying the mobilityHistoryReportReq information element set to TRUE in the UEInformationRequest message. The UE then reports the relevant mobility history information to the base station in the mobilityHistoryReport information element in the response UEInformationResponse message.

[0039] In this disclosure, MHI variables (such as VarMobilityHistoryReport variables) and MHI reports are not distinguished and can be used interchangeably to refer to MHI information recorded or reported by the UE.

[0040] As mentioned above, the PSCell mobility history information of version 17 includes the PCell list and the nested PSCell list history information. The purpose of the enhancement work on the mobility history information of version 19 is to enhance the SCG activation / deactivation mechanism, and to carry SCG activation / deactivation related information in the mobility history information so that the network side can obtain the historical information of the UE's DC configuration and SCG activation / deactivation status, thereby providing a reference for the subsequent DC configuration and SCG activation / deactivation decisions of the UE and other users in the network. 3GPP reference R2-2312678 proposes to include SCG activation / deactivation information in the MHI, such as the SCG activation time or the percentage of the SCG activation time. The present disclosure mainly focuses on how to include SCG activation / deactivation related information in the MHI, so that the network side can obtain the statistical information of SCG activation / deactivation on the UE side, and reduce the signaling overhead caused by the UE reporting the MHI containing SCG activation / deactivation information.

[0041] In order to solve the above-mentioned problems, the present disclosure describes the following embodiments as examples. However, all the described embodiments are merely examples and do not limit the present disclosure.

[0042] Example 1

[0043] This embodiment provides a method for recording PSCell mobility history information implemented on a UE. In this embodiment, the UE distinguishes between PSCells and records information related to the SCG activation / deactivation status, thereby achieving more refined recording of information related to the SCG activation / deactivation status. This enables the network side to obtain more accurate SCG activation / deactivation information, thereby better configuring DC and enabling SCG activation / deactivation.

[0044] When the UE adds a new PSCell entry in the UE variable VarMobilityHistoryReport, the UE includes SCG activation / deactivation related information for the newly included entry.

[0045] Optionally, the UE determines whether the SCG has been deactivated (whether SCG deactivation has occurred or whether it has been in an SCG deactivated state) when connected to the PSCell associated with the PSCell item (for example, called the previous PSCell). If so, the UE includes SCG activation / deactivation related information in the PSCell item.

[0046] In one implementation, the SCG activation / deactivation related information is the first SCG information, that is, the time when the SCG is in the activated state.

[0047] When the UE adds a new PSCell item in the UE variable VarMobilityHistoryReport (i.e., MHI variable), for the newly included item, the UE sets the first SCG information to the time spent in the SCG activation state in the previous PSCell when the UE was connected to the current PCell. Optionally, considering that the UE may be in the SCG activation state discontinuously in the previous PSCell, the first SCG information is the sum of the time the UE was in the SCG activation state in the previous PSCell. For example, in chronological order: in PSCell1, the SCG is activated at time point T1, deactivated at time point T2, activated at time point T3, deactivated at time point T4, and the UE leaves the PSCell at time T5 (such as the SCG is released, or the UE changes the PSCell to the new PSCell2). Then the first SCG information is the sum of the time the UE was in the SCG activation state in the previous PSCell1, that is, (T2-T1)+(T4-T3).

[0048] Optionally, when the UE receives a UEInformationRequest message from the network side with the mobilityHistoryReportReq information element set to true, if the UE is configured with a PSCell, the UE includes an item of the current PSCell in the MHI report of the UEInformationResponse. For this PSCell item, the UE sets the first SCG information to the time (total) spent in the SCG activation state in the current PSCell when the UE is connected to the current PCell.

[0049] In the existing mechanism, when the UE adds a PSCell item in the MHI variable, the UE sets the timeSpent field to the time spent by the UE in the previous PSCell (when the PSCell item is added to the MHI report in the UEInformationResponse, it refers to the current PSCell) when the UE is connected to the current PCell. Therefore, the UE optionally determines whether the value of the first SCG information is different from the value of the timeSpent field of the associated PSCell item. If so, the UE includes the first SCG information in the PSCell item. Optionally, if not, the UE does not include the first SCG information in the PSCell item (that is, the first SCG information corresponding to the PSCell item does not exist).

[0050] In another implementation, the SCG activation / deactivation related information is the second SCG information, that is, the time in the SCG deactivation state. When the UE adds a new PSCell item in the UE variable VarMobilityHistoryReport, for the newly included item, the UE sets the second SCG information to the time spent in the SCG deactivation state in the previous PSCell when the UE was connected to the current PCell. Optionally, considering that the UE may be in the SCG deactivation state discontinuously in the previous PSCell, the second SCG information is the sum of the time the UE was in the SCG deactivation state in the previous PSCell. For example, in chronological order: in PSCell1, the SCG is activated at time point T1, deactivated at time point T2, activated at time point T3, deactivated at time point T4, and the UE leaves the PSCell at time T5 (such as the SCG is released, or the UE changes the PSCell to the new PSCell2). Then the second SCG information is the sum of the time that the UE was in the SCG deactivated state in the previous PSCell1, that is, (T3-T2)+(T5-T4). Optionally, when the UE receives a UEInformationRequest message with the mobilityHistoryReportReq information element set to true from the network side, if the UE is configured with a PSCell, the UE includes an item of the current PSCell in the MHI report. For this PSCell item, the UE sets the second SCG information to the time (sum) spent in the SCG deactivated state in the current PSCell when the UE was connected to the current PCell. Optionally, if the time that the UE was in the SCG deactivated state in the PSCell is zero, the UE does not include the second SCG information in the MHI report / MHI variable.

[0051] In yet another implementation, the SCG activation / deactivation related information is third SCG information, namely, the percentage of time in the SCG activation state.

[0052] When the UE adds a new PSCell entry in the UE variable VarMobilityHistoryReport (i.e., MHI variable), for the newly included entry, the UE sets the third SCG information to the percentage of the time (total) spent in the SCG activation state in the previous PSCell when the UE was connected to the current PCell and the time spent in the previous PSCell when the UE was connected to the current PCell (i.e., the value of the timeSpent information element associated with the PSCell). Optionally, taking into account that the UE may be in the SCG activation state discontinuously in the previous PSCell, for example, in chronological order: in PSCell1, at time T1, the UE enters the PSCell and the SCG is activated, at time T2, the SCG is deactivated, at time T3, the SCG is activated, at time T4, the SCG is deactivated, and at time T5, the UE leaves the PSCell (e.g., the SCG is released, or the UE changes the PSCell to a new PSCell2). Then the third SCG information is the percentage rate value of [(T2-T1)+(T4-T3)] and (T5-T1).

[0053] Optionally, when the UE receives a UEInformationRequest message with the mobilityHistoryReportReq information element set to true from the network side, if the UE is configured with a PSCell, the UE includes an item of the current PSCell in the MHI report of the UEInformationResponse. For this PSCell item, the UE sets the third SCG information to the time (total) spent in the SCG activation state in the current PSCell when the UE is connected to the current PCell and the percentage rate of the time spent in the current PSCell when the UE is connected to the current PCell.

[0054] Optionally, the UE determines whether the value of the third SCG information is not 100%. If not, the UE includes the third SCG information in the PSCell item.

[0055] Optionally, the value of the third SCG information is selected from the following set {25%; 50%; 75%} and is set to one of the sets. For example, when the time (total) spent in the SCG activation state in the previous PSCell (or current PSCell) when the UE is connected to the current PCell and the percentage rate of the time spent in the current PSCell when the UE is connected to the current PCell are less than or equal to 25%, the third SCG information is set to 25%; when the time (total) spent in the SCG activation state in the previous PSCell (or current PSCell) when the UE is connected to the current PCell and the percentage rate of the time spent in the current PSCell when the UE is connected to the current PCell are less than or equal to 50% and greater than or equal to 25%, the third SCG information is set to 50%; when the time (total) spent in the SCG activation state in the previous PSCell (or current PSCell) when the UE is connected to the current PCell and the percentage rate of the time spent in the current PSCell when the UE is connected to the current PCell are greater than or equal to 50%, the third SCG information is set to 75%.

[0056] Optionally, the value of the third SCG information is selected from the following set {20%; 40%; 60%; 80%} and is set to one of the set.

[0057] In yet another implementation, the SCG activation / deactivation related information is fourth SCG information, namely, the percentage of time in the SCG deactivation state.

[0058] When the UE adds a new PSCell item in the UE variable VarMobilityHistoryReport (i.e., MHI variable), for the newly included item, the UE sets the fourth SCG information to the percentage of the time (total) spent in the SCG deactivated state in the previous PSCell when the UE was connected to the current PCell and the time spent in the previous PSCell when the UE was connected to the current PCell (i.e., the value of the timeSpent information element associated with the PSCell). Optionally, considering that the UE may be in the SCG activated state discontinuously in the previous PSCell, for example, in chronological order: in PSCell1, at time T1, the UE enters the PSCell and the SCG is activated, at time T2, the SCG is deactivated, at time T3, the SCG is activated, at time T4, the SCG is deactivated, and at time T5, the UE leaves the PSCell (such as the SCG is released, or the UE changes the PSCell to the new PSCell2). Then the fourth SCG information is the percentage rate value of [(T3-T2)+(T5-T4)] and (T5-T1).

[0059] Optionally, when the UE receives a UEInformationRequest message with the mobilityHistoryReportReq information element set to true from the network side, if the UE is configured with a PSCell, the UE includes an item of the current PSCell in the MHI report of the UEInformationResponse. For this PSCell item, the UE sets the fourth SCG information to the time (total) spent in the SCG deactivation state in the current PSCell when the UE is connected to the current PCell and the percentage rate of the time spent in the current PSCell when the UE is connected to the current PCell.

[0060] Optionally, the UE determines whether the value of the fourth SCG information is not 0. If not, the UE includes the fourth SCG information in the PSCell item.

[0061] Optionally, the value of the fourth SCG information is selected from the following set {25%; 50%; 75%} and is set to one of the sets. For example, when the time (total) spent in the SCG activation state in the previous PSCell (or current PSCell) when the UE is connected to the current PCell and the percentage rate of the time spent in the current PSCell when the UE is connected to the current PCell are less than or equal to 25%, the fourth SCG information is set to 25%; when the time (total) spent in the SCG activation state in the previous PSCell (or current PSCell) when the UE is connected to the current PCell and the percentage rate of the time spent in the current PSCell when the UE is connected to the current PCell are less than or equal to 50% and greater than or equal to 25%, the fourth SCG information is set to 50%; when the time (total) spent in the SCG activation state in the previous PSCell (or current PSCell) when the UE is connected to the current PCell and the percentage rate of the time spent in the current PSCell when the UE is connected to the current PCell are greater than or equal to 50%, the fourth SCG information is set to 75%.

[0062] Optionally, the value of the fourth SCG information is selected from the following set {20%; 40%; 60%; 80%} and is set to one of the set.

[0063] In yet another implementation, the SCG activation / deactivation related information is the fifth SCG information, ie, an indication that the SCG is deactivated.

[0064] When the UE adds a new PSCell item in the UE variable VarMobilityHistoryReport (i.e., MHI variable), for the newly included item, if the UE was in the SCG deactivated state in the PSCell when connected to the current PCell (the SCG was deactivated, the UE sets the fifth SCG information to true (or describes it as including the fifth SCG information). The fifth SCG information is used to indicate whether the SCG of the UE has been deactivated in the associated PSCell (whether the SCG has been in a deactivated state); if it is set to true, it means that the SCG of the UE has been deactivated in the associated PSCell.

[0065] Optionally, when the UE receives a UEInformationRequest message with the mobilityHistoryReportReq information element set to true from the network side, if the UE is configured with a PSCell, the UE includes an item of the current PSCell in the MHI report of the UEInformationResponse. For this PSCell item, if the UE was in an SCG deactivated state in the PSCell when connected to the current PCell (the SCG was deactivated, the UE sets the fifth SCG information to true (or describes it as including the fifth SCG information).

[0066] In another implementation, the SCG activation / deactivation related information is the sixth SCG information, that is, the number of times in the SCG deactivated state. When the UE adds a new PSCell item in the UE variable VarMobilityHistoryReport, for the newly included item, the UE sets the sixth SCG information to the number of times the SCG was deactivated in the previous PSCell when the UE was connected to the current PCell. For example, in chronological order: in PSCell1, at time point T1, the UE enters the PSCell and the SCG is activated, at time point T2, the SCG is deactivated, at time point T3, the SCG is activated, at time point T4, the SCG is deactivated, and at time T5, the UE leaves the PSCell (such as the SCG is released, or the UE changes the PSCell to the new PSCell2). Then the sixth SCG information is the number of times the UE's SCG was deactivated in the previous PSCell1, that is, 2 times.

[0067] Optionally, when the UE receives a UEInformationRequest message with the mobilityHistoryReportReq information element set to true from the network side, if the UE is configured with a PSCell, the UE includes an item for the current PSCell in the MHI report. For this PSCell item, the UE sets the sixth SCG information to the number of times the SCG was deactivated in the current PSCell when the UE was connected to the current PCell. Optionally, if the SCG is not deactivated in the PSCell, the UE does not include the sixth SCG information in the MHI report / MHI variable.

[0068] Optionally, when a PSCell is added, or when a PSCell is changed or released, or when a PCell is switched but the PSCell is not changed (the UE continues to be connected to the same PSCell during / before and after the PCell change), the UE adds a new PSCell entry in the MHI variable.

[0069] Optionally, for a PSCell item in an MHI variable, when the time the UE is in the SCG deactivated state in the PSCell is much longer than the time it is in the SCG activated state, the UE includes one or more of the aforementioned first to sixth SCG information in the PSCell item. For example, when the difference between the time (total) spent in the SCG activated state in the previous PSCell when the UE is connected to the current PCell and the time spent in the previous PSCell when the UE is connected to the current PCell (i.e., the value of the timeSpent information element associated with the PSCell) exceeds a threshold value TH1, or, when the difference between the time (total) spent in the SCG deactivated state in the previous PSCell when the UE is connected to the current PCell and the time spent in the previous PSCell when the UE is connected to the current PCell is lower than a threshold value TH2, or, when the UE is connected When the time (total) spent in the SCG activation state in the previous PSCell when the UE is connected to the current PCell and the percentage of the time spent in the previous PSCell when the UE is connected to the current PCell are lower than a threshold value TH3, or when the time (total) spent in the SCG deactivation state in the previous PSCell when the UE is connected to the current PCell and the percentage of the time spent in the previous PSCell when the UE is connected to the current PCell are higher than a threshold value TH4, the UE includes one or more of the aforementioned first SCG information to the sixth SCG information in the PSCell item.

[0070] Optionally, for a PSCell item in an MHI variable, when the time the UE is in the SCG deactivated state in the PSCell is much less than the time it is in the SCG activated state, the UE includes one or more of the aforementioned first to sixth SCG information in the PSCell item. For example, when the difference between the time (total) spent in the SCG activated state in the previous PSCell when the UE is connected to the current PCell and the time spent in the previous PSCell when the UE is connected to the current PCell (i.e., the value of the timeSpent information element associated with the PSCell) is lower than a threshold value TH5, or, when the difference between the time (total) spent in the SCG deactivated state in the previous PSCell when the UE is connected to the current PCell and the time spent in the previous PSCell when the UE is connected to the current PCell exceeds a threshold value TH6, or, when the UE is connected When the time (total) spent in the SCG activation state in the previous PSCell when the UE is connected to the current PCell and the percentage of the time spent in the previous PSCell when the UE is connected to the current PCell are higher than a threshold value TH7, or when the time (total) spent in the SCG deactivation state in the previous PSCell when the UE is connected to the current PCell and the percentage of the time spent in the previous PSCell when the UE is connected to the current PCell are lower than a threshold value TH8, the UE includes one or more of the aforementioned first SCG information to the sixth SCG information in the PSCell item.

[0071] Optionally, the threshold values ​​TH1-TH8 are configured to the UE by the base station through an RRC message.

[0072] Optionally, when the UE supports MHI based on SCG activation / deactivation, the UE executes the method described in this embodiment.

[0073] Example 2

[0074] This embodiment provides a method for recording PSCell mobility history information implemented on a UE. Unlike Example 1, in which the UE records SCG activation / deactivation information for each PSCell entry, this embodiment records SCG activation / deactivation information for each PCell. By reducing the accuracy of the recorded SCG activation / deactivation information, the signaling overhead and resulting energy consumption of the UE recording and reporting MHI are reduced.

[0075] When the UE adds a new PCell entry in the MHI variable, the UE includes SCG activation / deactivation related information for the newly included entry. Optionally, the UE determines whether the SCG has been deactivated (whether SCG deactivation has occurred or whether it has been in an SCG deactivated state) when connected to the PCell associated with the PCell entry (such as the previous PCell) when DC is configured. If so, the UE includes SCG activation / deactivation related information in the PCell entry.

[0076] In one implementation, the SCG activation / deactivation related information is the seventh SCG information, that is, the time in the SCG activation state.

[0077] When the UE adds a new PCell item in the UE variable VarMobilityHistoryReport (i.e., MHI variable), for the newly included item, the UE sets the seventh SCG information to the time the UE spent in the SCG activation state when it was connected to the previous PCell. Optionally, the UE may go through multiple PSCells before connecting to the previous PCell, that is, multiple PSCell items are nested in the PCell item, then the seventh SCG information is set to the sum of the time the UE is in the SCG activation state in the PSCells associated with the multiple PSCell items. For example, in chronological order, when the UE is connected to PCell1, the UE goes through PSCell1, PSCell2, and PSCell3 in sequence until the UE releases PCell1 or switches out of PCell1; and the time the UE is in the SCG activation state in these three PSCells is T1, T2, and T3, respectively, then the seventh SCG information is set to the sum of these three times, that is, (T1+T2+T3).

[0078] Optionally, when the UE receives a UEInformationRequest message with the mobilityHistoryReportReq information element set to true from the network side, the UE includes an item for the current PCell in the MHI report of the UEInformationResponse. For this PCell item, if the UE was configured with DC / SCG / PSCell when connected to the PCell, the UE sets the seventh SCG information to the time spent in the SCG activation state when the UE was connected to the current PCell. As mentioned above, the seventh SCG information is the sum of the time spent in the SCG activation state in the PSCell associated with all PSCell items when the UE was connected to the current PCell.

[0079] Optionally, the UE determines whether the value of the seventh SCG information is different from the sum of the values ​​of the timeSpent fields in all PSCell items associated with the PCell. If so, the UE includes the seventh SCG information in the PSCell item.

[0080] In another implementation, the SCG activation / deactivation related information is the eighth SCG information, that is, the time in the SCG deactivation state. When the UE adds a new PCell item in the UE variable VarMobilityHistoryReport (that is, the MHI variable), for the newly included item, the UE sets the eighth SCG information to the time spent in the SCG deactivation state when the UE was connected to the previous PCell. Optionally, the UE may go through multiple PSCells before connecting to the previous PCell, that is, multiple PSCell items are nested in the PCell item, then the eighth SCG information is set to the sum of the time the UE is in the SCG deactivation state in the PSCells associated with the multiple PSCell items. For example, in chronological order, when the UE is connected to PCell1, the UE goes through PSCell1, PSCell2 and PSCell3 in sequence until the UE releases PCell1 or switches out of PCell1; and the time the UE is in the SCG deactivation state in these three PSCells is T1, T2 and T3, respectively, then the eighth SCG information is set to the sum of these three times, that is, (T1+T2+T3).

[0081] Optionally, when the UE receives a UEInformationRequest message with the mobilityHistoryReportReq information element set to true from the network side, the UE includes an item of the current PCell in the MHI report of the UEInformationResponse. For this PCell item, if DC / SCG is configured when the UE is connected to the PCell, the UE sets the eighth SCG information to the time spent in the SCG deactivation state when the UE is connected to the current PCell. As mentioned above, the eighth SCG information is the sum of the time spent in the SCG deactivation state in the PSCell associated with all PSCell items when the UE is connected to the current PCell.

[0082] In yet another implementation, the SCG activation / deactivation related information is the ninth SCG information, ie, an indication that the SCG is deactivated.

[0083] When the UE adds a new PCell item in the MHI variable, for the newly included item, if the UE has been in the SCG deactivated state in the previous PCell (the SCG has been deactivated, the UE sets the ninth SCG information to true (or describes it as the UE containing the ninth SCG information). The ninth SCG information is used to indicate whether the SCG of the UE has been deactivated in the previous PCell (whether the SCG has been in a deactivated state); if it is set to true, it means that the SCG of the UE has been deactivated in the previous PCell.

[0084] Optionally, when the UE receives a UEInformationRequest message from the network side with the mobilityHistoryReportReq information element set to true, the UE includes an item of the current PCell in the MHI report of the UEInformationResponse. For this PCell item, if the UE was in the SCG deactivated state (SCG was deactivated) when connected to the current PCell, the UE sets the ninth SCG information to true (or describes it as including the ninth SCG information).

[0085] In another implementation, the SCG activation / deactivation related information is the tenth SCG information, that is, the number of times in the SCG deactivated state. When the UE adds a new PCell item in the UE variable VarMobilityHistoryReport, for the newly included item, the UE sets the tenth SCG information to the sum of the number of times the SCG was deactivated when the UE was in the previous PCell. For example, in chronological order, when the UE is connected to PCell1, the UE successively experiences PSCell1, PSCell2 and PSCell3 until the UE releases PCell1 or switches out of PCell1; and the number of times the SCG is deactivated that the UE experiences in these three PSCells is N1, N2 and N3, respectively, then the tenth SCG information is set to the sum of these three numbers, that is, (N1+N2+N3).

[0086] Optionally, when the UE receives a UEInformationRequest message with the mobilityHistoryReportReq information element set to true from the network side, the UE includes an entry for the current PCell in the MHI report. For this PCell entry, the UE sets the tenth SCG information to the number of times the SCG was deactivated when the UE was connected to the current PCell. Optionally, if the SCG is not deactivated or DC is not configured for the UE in the PCell, the UE does not include the tenth SCG information in the MHI report / MHI variable.

[0087] Optionally, when the UE is in the RRC connected state, when the PCell changes, ie, when switching, the UE adds a new PCell item in the MHI variable.

[0088] Optionally, for a PCell item in an MHI variable, when the time the UE is in the SCG deactivated state in the PCell is much longer than the time it is in the SCG activated state (such as exceeding a threshold value TH9), the UE includes one of the aforementioned seventh to tenth SCG information in the PCell item.

[0089] Optionally, for a PCell item in an MHI variable, when the time that the UE is in the SCG deactivated state in the PCell is much less than the time in the SCG activated state (such as exceeding a threshold value TH10), the UE includes one or more of the aforementioned seventh SCG information to the tenth SCG information in the PCell item.

[0090] Optionally, the threshold value TH9 or TH10 is configured to the UE by the base station through RRC signaling.

[0091] Optionally, when the UE supports MHI based on SCG activation / deactivation, the UE executes the method described in this embodiment.

[0092] Example 3

[0093] This embodiment provides a method for recording and reporting mobile history information implemented on a UE. This embodiment and 2 are not exclusive and can coexist, for example, as a supplement to embodiment 2. In this embodiment, when the UE adds a new item to the MHI variable, if the UE removes the oldest item, then for the recorded SCG activation / deactivation information in the MHI variable, the UE updates the SCG activation / deactivation information, so that the SCG activation / deactivation information recorded by the UE can be updated to the latest value based on the relevant information in the item in the latest MHI variable, so that the network can obtain more accurate SCG activation / deactivation information in the MHI.

[0094] In this embodiment, when the UE adds an item to a (latest) PSCell list (herein referred to as the first PSCell list) in the MHI variable, the UE may remove the oldest item in the PSCell list (herein referred to as the second PSCell list) in the PCell item from the oldest PCell item containing the PSCell list. At this time, the UE may perform the following operation: if the oldest PCell item contains SCG activation / deactivation information, the UE updates the SCG activation / deactivation information. Optionally, the SCG activation / deactivation information is one or more of the first SCG information to the tenth SCG information in the aforementioned embodiment. Optionally, the UE updating the SCG activation / deactivation information means that the UE updates the new SCG activation / deactivation information based on the latest (i.e., after removing the item in the oldest PSCell list) PSCell list (the second PSCell list) information and records it in the MHI variable. Optionally, the PSCell list is represented by the visitedPSCellInfoList or visitedPSCellInfoListReport information element.

[0095] For example, the MHI variable includes the following items in chronological order:

[0096] PCell 1{(PSCell A, time spent); (PSCell B, time spent); (time spent); (PSCell C, time spent); SCG activation / deactivation information 1};

[0097] Pcell 2 {……},

[0098] .......;

[0099] PCell N{.......}.

[0100] If the UE needs to remove the oldest PSCell item (i.e., PSCell A's item) in the PSCell list in the oldest PCell item (i.e., PCell1's item), the PSCell list after removing PSCell A's item in the PCell1's item is updated to PCell 1{(PSCell B, time spent); (time spent); (PSCell C, time spent); SCG activation / deactivation information 1}. At this time, the UE needs to update the SCG activation / deactivation information SCG activation / deactivation information 1) according to the updated PSCell list. This is because, in this SCG activation / deactivation information recording method, the SCG activation / deactivation information is recorded for each PCell and is recorded based on the PSCell information associated with the PCell. When the PSCell information (PSCell list) associated with the PCell item changes, the recorded SCG activation / deactivation information also needs to be updated synchronously. In the above example, the SCG activation / deactivation information SCG activation / deactivation information 1 in the PCell1 item is recorded based on the PSCell list (i.e., (PSCell A, time spent); (PSCell B, time spent); (time spent); (PSCell C, time spent)). When the PSCell list is updated to a new PSCell list (i.e., (PSCell B, time spent); (time spent); (PSCell C, time spent)), the SCG activation / deactivation information SCG activation / deactivation information 1 in the PCell1 item also needs to be updated accordingly.For example, when the SCG activation / deactivation information is the sum of the SCG activation time of the UE in the previous PCell (i.e., the seventh SCG information), before removing the item of PSCell A, SCG activation / deactivation information 1 records the sum of the SCG activation time of the UE in PCell1, that is, the sum of the time when the UE is in the SCG activation state in PSCell A, PSCell B and PSCell C; when the item of PSCellA is removed, SCG activation / deactivation information 1 is updated to the sum of the time when the UE is in the SCG activation state in PSCell B and PSCell C.

[0101] Optionally, when a PSCell is added, or when a PSCell is changed or released, or when a PCell is switched but the PSCell is not changed (the UE continues to be connected to the same PSCell during / before and after the PCell change), the UE adds a new PSCell entry in the MHI variable.

[0102] Example 4

[0103] This embodiment provides a method for recording and reporting mobility history information implemented on a UE. Unlike the previous embodiment, in this embodiment, the UE records the SCG in an activated state and the SCG in a deactivated state in different PSCell items in chronological order, and uses the SCG deactivation indication to distinguish which items are PSCell items for recording the SCG deactivation status, thereby recording more detailed SCG activation / deactivation information.

[0104] In this embodiment, when the UE adds an item to the PSCell list, if the item records the SCG deactivation state (e.g., the timeSpent information element in the item is the time the UE spent in the SCG deactivation state), the UE sets an SCG deactivation indication in the item, which is used to indicate that the item records the time the UE was in the SCG deactivation state. Optionally, the item also includes a PSCell identifier, that is, the identifier of the connected PSCell when the UE is in the SCG deactivation state.

[0105] Optionally, the SCG deactivation indication is set to true, indicating that the item records the time when the UE is in the SCG deactivated state. Optionally, when the item is not used to record the time when the UE is in the SCG deactivated state, the SCG deactivation indication does not exist.

[0106] Optionally, when the UE activates the SCG, if the UE receives an SCG activation command, if it is in the SCG deactivation state before activating the SCG, the UE adds an item to the PSCell list.

[0107] Optionally, when the UE releases the SCG / DC / PSCell, if the UE receives an SCG / DC / PSCell release indication, if the UE is in an SCG deactivated state before releasing the SCG / DC / PSCell, the UE adds an item to the PSCell list.

[0108] Optionally, when the PSCell is changed, if the UE is in an SCG deactivated state before the PSCell is changed, the UE adds an item to the PSCell list.

[0109] Optionally, if the item is a record of the SCG deactivation status, it means that the item is added in one of the following situations: Case 1: When the UE activates the SCG, if the UE receives an SCG activation command, if the UE is in the SCG deactivation state before activating the SCG, the UE adds an item to the PSCell list; Case 2: When the UE releases the SCG / DC / PSCell, if the UE receives an SCG / DC / PSCell release indication, if the UE is in the SCG deactivation state before releasing the SCG / DC / PSCell, the UE adds an item to the PSCell list. Case 3: When the PSCell changes, if the UE is in the SCG deactivation state before the PSCell changes, the UE adds an item to the PSCell list.

[0110] Example 5

[0111] This embodiment illustrates the user equipment UE of the present disclosure. Figure 2 is a block diagram of the user equipment UE involved in the present invention. As shown in Figure 2, the user equipment UE20 includes a processor 201 and a memory 202. The processor 201 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc. The memory 202 may include, for example, a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memory, etc. Program instructions are stored on the memory 202. When the instructions are executed by the processor 201, various methods such as the above-mentioned mobile information reporting method described in detail in the present invention can be executed.

[0112] In the present disclosure, some different embodiments may work together. Unless otherwise specified, the concepts or definitions between the embodiments may be universal.

[0113] In this disclosure, "base station" refers to a mobile communications data and control switching center with high transmission power and wide coverage area, including functions such as resource allocation and scheduling, and data reception and transmission. "User equipment" refers to a user's mobile terminal, such as a mobile phone or laptop, that can wirelessly communicate with a base station or micro base station.

[0114] The method and related devices of the present disclosure have been described above in conjunction with preferred embodiments. Those skilled in the art will appreciate that the method shown above is merely exemplary. The method of the present disclosure is not limited to the steps and sequence shown above. The base station and user equipment shown above may include more modules, for example, modules that can be developed or will be developed in the future and can be used for the base station, MME, or UE, etc. The various identifiers shown above are merely exemplary and not restrictive, and the present disclosure is not limited to the specific information elements used as examples of these identifiers. Those skilled in the art may make many changes and modifications based on the teachings of the illustrated embodiments.

[0115] The program running on the device according to the present disclosure may be a program that controls a central processing unit (CPU) to enable a computer to implement the functions of the embodiments of the present disclosure. The program or the information processed by the program may be temporarily stored in a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memory systems.

[0116] The program for realizing each embodiment function of the present disclosure can be recorded on a computer-readable recording medium. The corresponding function can be realized by making a computer system read the program recorded on the recording medium and executing these programs. The so-called "computer system" herein can be a computer system embedded in the device, and can include an operating system or hardware (such as a peripheral device). "Computer-readable recording medium" can be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a short-term dynamic storage program recording medium or any other recording medium that is computer-readable.

[0117] The various features or functional modules of the devices used in the above embodiments can be implemented or executed by circuits (e.g., single-chip or multi-chip integrated circuits). The circuits 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 devices. The general-purpose processor may be a microprocessor, or any existing processor, controller, microcontroller, or state machine. The above circuits may be digital circuits or analog circuits. In the case where new integrated circuit technologies have emerged to replace existing integrated circuits due to advances in semiconductor technology, one or more embodiments of the present disclosure may also be implemented using these new integrated circuit technologies.

[0118] Furthermore, 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 can be used as terminal devices or communication devices, such as AV equipment, kitchen equipment, cleaning equipment, air conditioners, office equipment, vending machines, and other household appliances.

[0119] As described 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-mentioned embodiments, and the present disclosure also includes any design changes that do not deviate from the main purpose 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 different embodiments are also included in the technical scope of the present disclosure. In addition, components with the same effect described in the above-mentioned embodiments can be replaced with each other.

Claims

1. A mobile information reporting method, comprising: The user equipment UE creates a primary and secondary cell group cell PSCell item in the visitedPSCellInfoList information element in the mobility history information MHI variable VarMobilityHistoryReport; The UE includes SCG activation / deactivation related information in the item when it determines that the secondary cell group SCG has been deactivated when connected to the PSCell associated with the PSCell item; The SCG activation / deactivation related information is used to distinguish PSCell records.

2. The mobile information reporting method according to claim 1, wherein: The SCG activation / deactivation related information is first SCG information; The UE sets the first SCG information to the time spent in the SCG activation state in the previous PSCell when the UE is connected to the current PCell.

3. The mobile information reporting method according to claim 1 or 2, wherein: If the UE is configured with a PSCell, the UE includes an entry for the current PSCell in the mobility history information MHI report in the UEInformationResponse message, and In the PSCell item, the first SCG information is set to the time spent in the SCG activation state in the current PSCell when the UE is connected to the current PCell.

4. The mobile information reporting method according to claim 1 or 2, wherein: The UE includes the first SCG information in the PSCell item only when it determines that the value of the first SCG information is different from the value of the timeSpent field of the associated PSCell item. The mobile information reporting method according to claim 1 , wherein: The SCG activation / deactivation related information is the SCG activation time percentage; The UE sets the SCG activation time percentage to the sum of the time spent in the SCG activation state in the previous PSCell when the UE was connected to the current PCell and the percentage of the time spent in the previous PSCell when the UE was connected to the current PCell; and The UE includes the SCG activation time percentage in the associated PSCell item only when it determines that the value of the SCG activation time percentage is not 100%. The mobile information reporting method according to claim 1 , wherein: The SCG activation / deactivation related information is the number of times the SCG of the UE was deactivated in the previous PSCell.

7. A mobile information reporting method, comprising: The user equipment UE creates a primary cell PCell entry in the mobility history information MHI variable VarMobilityHistoryReport; When the UE determines that dual connectivity DC is configured and the secondary cell group SCG has been deactivated when connected to the PCell associated with the PCell item, the UE includes SCG activation / deactivation related information in the item; The SCG activation / deactivation related information is used to distinguish PCell records.

8. The mobile information reporting method according to claim 7, wherein: The SCG activation / deactivation related information is the time spent in the SCG activation state when the UE was connected to the previous PCell.

9. The mobile information reporting method according to claim 7 or 8, wherein: When the UE adds a PSCell entry to the first PSCell list in the MHI variable, remove the oldest entry in the second PSCell list from the oldest PCell entry in the PSCell list, and, If the oldest PCell item contains the SCG activation / deactivation related information, the UE updates the SCG activation / deactivation related information.

10. A user equipment comprising: processor; as well as a memory, wherein instructions are stored in the memory; When the instructions are executed by the processor, the user equipment is caused to execute the mobility information reporting method according to any one of claims 1 to 9.

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