Method executed by user equipment, and user equipment

Abstract

Provided in the present invention are a method executed by user equipment and the user equipment. The method comprises: receiving an RRC dedicated message sent by a network, the RRC dedicated message comprising a measurement report configuration; according to the measurement report configuration and a processing strategy for a trigger cell list, judging whether first condition needs to be executed; if it is determined that the first condition needs to be executed, determining a first condition; if it is determined that the first condition is satisfied, initiating a measurement report process.

Description

Method performed by user equipment and user equipment Technical Field

[0001] The present invention relates to the field of wireless communication technology, and more particularly, to a method for initiating a measurement report executed by a user equipment and a corresponding user equipment. Background Art

[0002] In recent years, drone applications have attracted increasing attention, such as multi-drone joint operations, personal entertainment applications, and cargo delivery. These drone applications can be realized or enhanced in terms of service performance based on wireless technology.

[0003] LTE version 15 has been enhanced for drones to meet their data transmission and mobility needs.

[0004] In December 2021, at the RAN#94 plenary meeting, a work item for NR support for drone functions in version 18 was proposed and approved, see the non-patent document: RP-213600 New WID on NR support for UAV (Uncrewed Aerial Vehicles). For the latest revised and approved description of this work item, see the non-patent document: RP-223545 Revised WID on NR support for UAV. One of the goals of this work item is to enhance the measurement report based on the characteristics of drone equipment. Possible enhancements include: measurement reports triggered by UE based on the configured height threshold, including information such as height, position and speed in the measurement report, flight path reports, and reporting of measurement reports based on the number of cells that meet the measurement event triggering conditions at the same time based on the configuration.

[0005] Therefore, it is necessary to discuss how to initiate measurement reports of drone devices after NR supports drone functions, taking into account the altitude characteristics of drone devices, so as to reduce interference and improve performance.

[0006] Summary of the Invention

[0007] In order to solve at least part of the above problems, the present invention provides a method and user equipment executed by a user equipment, which can reduce the overly frequent reporting of measurement reports, save air interface resources and reduce power consumption, reduce interference, and can correctly and timely trigger the reporting of measurement reports, while avoiding the abnormal situation where the measurement report cannot be reported, thereby improving the service performance of the UE in the mobile scenario.

[0008] According to the present invention, a method performed by a user equipment (UE) is proposed, comprising: receiving an RRC-specific message sent by a network, the RRC-specific message including a measurement report configuration; judging whether it is necessary to perform a first condition judgment based on the measurement report configuration and a processing strategy for a triggered cell list; if it is judged that it is necessary to perform the first condition judgment, judging the first condition; and if it is judged that the first condition is met, initiating a measurement report process.

[0009] Preferably, the processing strategy for the trigger cell list includes: retaining the trigger cell list when the altitude range changes; and deleting the trigger cell list when the altitude range changes.

[0010] Preferably, it is determined that the first condition judgment needs to be executed when at least one of the following items is met: the measurement report configuration contains information on the number of height-related trigger cells; the number of cells in the trigger cell list is greater than or equal to the current number of height-based trigger cells; the measurement report configuration does not contain height-related measurement events; and it is decided to retain the saved cell information in the trigger cell list when the height range changes.

[0011] Preferably, the first condition includes at least one of the following: the measurement report process has not been initiated for the measurement ID; the number of report sending times is less than 1 or equal to 0; the current number of height-based trigger cells and the value of the height-based trigger cell number used in the last triggered measurement report for the measurement ID are different; the number of cells reported in the last measurement report sent to the network for the measurement ID is less than or equal to the current number of height-based trigger cells; and the current number of height-based trigger cells is greater than or equal to the number of height-based trigger cells used in the last triggered measurement report for the measurement ID.

[0012] Preferably, if the number of cells in the triggered cell list is less than the number of triggered cells based on height, the cell that triggers the measurement event is added to the triggered cell list. After the cell is added to the triggered cell list, if the number of cells in the triggered cell list is greater than or equal to the number of triggered cells based on height, the measurement report process is initiated if at least one of the following items is met: the number of cells reported in the last measurement report sent to the network for the measurement ID is less than or equal to the current number of triggered cells based on height; and the current number of triggered cells based on height is greater than or equal to the number of triggered cells based on height used in the last triggered measurement report for the measurement ID.

[0013] Preferably, the current number of trigger cells based on altitude refers to the number of trigger cells configured by the network currently in use, or refers to the number of trigger cells based on altitude configured by the network corresponding to the current altitude range.

[0014] In addition, according to the present invention, a user equipment is proposed, comprising: a processor; and a memory storing instructions, wherein the instructions execute the above method when executed by the processor.

[0015] According to the present invention, it is possible to reduce overly frequent measurement report reporting, save air interface resources and reduce power consumption, reduce interference, and correctly and timely trigger the reporting of measurement reports, avoid abnormal situations where measurement reports cannot be reported, and improve the service performance of UE in mobile scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a schematic diagram showing a measurement model of NR.

[0017] FIG2 is a simplified structural block diagram of a user equipment UE according to the present invention. DETAILED DESCRIPTION

[0018] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the present invention is not limited to the specific embodiments described below. In addition, for the sake of simplicity, detailed descriptions of known technologies that are not directly related to the present invention are omitted to prevent confusion in understanding the present invention.

[0019] The following describes some of the terms involved in this invention. The specific meanings of the terms can be found in the latest 3GPP standards.

[0020] UE:User Equipment

[0021] NR: New Radio, a new generation of wireless technology

[0022] E-UTRA: Evolved Universal Terrestrial Radio Access

[0023] LTE: Long Term Evolution

[0024] MAC: Medium Access Control

[0025] MAC CE: MAC control element

[0026] RLC: Radio Link Control

[0027] SDAP: Service Data Adaptation Protocol

[0028] PDCP: Packet Data Convergence Protocol

[0029] RRC: Radio Resource Control

[0030] RRC_CONNECTED: RRC connected state

[0031] RRC_INACTIVE: RRC inactive state

[0032] RRC_IDLE: RRC idle state

[0033] RAN: Radio Access Network, wireless access layer

[0034] AS: Access Stratum, access layer

[0035] IE: Information Element

[0036] CE: Control Element

[0037] MIB: Master Information Block

[0038] NR — New Radio

[0039] SIB: System Information Block

[0040] NG-RAN: Next-generation radio access network

[0041] DCI: Downlink Control Information, downlink control information

[0042] PHY: physical layer, physical layer

[0043] RB: radio bearer

[0044] DRB: Data Radio Bearer

[0045] SRB: Signaling Radio Bearer

[0046] Uu: air interface

[0047] NAS: Non-Access-Stratum

[0048] UAV: uncrewed aerial vehicles, drones

[0049] TDD: Time Division Duplex

[0050] RSRP: Reference Signal Received Power

[0051] RSRQ: Reference Signal Received Quality

[0052] SS: Synchronization Signal

[0053] PBCH: Physical Boardcast Channel, physical broadcast channel

[0054] SSB: SS / PBCH block, synchronization signal / PBCH block

[0055] CSI-RS: Channel State Information Reference Signal

[0056] PCell: Primary Cell

[0057] SpCell:Special Cell, special cell

[0058] SMTC: SSB Measurement Timing Configuration, SSB measurement timing configuration

[0059] In the present invention, network (network or NW), base station (base station or gNB or eNB) and RAN can be used interchangeably. The network can be a long-term evolution LTE network, a new radio access technology (New RAT, NR) network, an enhanced long-term evolution eLTE network, or other networks defined in subsequent evolution versions of 3GPP.

[0060] In the present invention, the user equipment UE may refer to the NR device supporting the NR UAV function described in the background technology, or the LTE device supporting the LTE UAV function, or may refer to other types of NR devices or LTE devices.

[0061] In the present invention, "UAV (unmanned aerial vehicle) UE", "Aerial (air) UE", "flying (flying) UE" and other names representing UE with drone functions can be used interchangeably.

[0062] In the present invention, "configure", "set" and "present" can be used interchangeably.

[0063] In the present invention, “used,” “available,” “active,” “applied,” “performed,” and “enabled” may be used interchangeably.

[0064] In the present invention, “use,” “make available,” “apply,” “implement,” “enable,” “activate,” “perform,” “do,” etc. may be used interchangeably.

[0065] In the present invention, "feedback", "submit", "report", "send", "transmit or transport", "inform", "indicate" and "provide" can be used interchangeably.

[0066] In the present invention, "trigger" and "initiate" can be used interchangeably.

[0067] In the present invention, "associate", "correspond" and "map" can be used interchangeably.

[0068] In the present invention, "measurement configuration" may refer to at least one of the following: measurement ID, measurement object, measurement report configuration, measurement quantity configuration, one or some parameters of the measurement object and / or measurement report configuration and / or measurement quantity configuration.

[0069] It should be noted that in this specification, two things connected by "and", "or", or "and / or" may represent different ways of expressing the same meaning in different application scenarios. There may be a relationship of inclusion and being included between the two, and they do not necessarily refer to completely different content.

[0070] Hereinafter, a description is given of related technologies of the present invention.

[0071] NR measurement

[0072] The measurement model of NR is shown in Figure 1.

[0073] -A: Measurement samples of a single beam inside the physical layer.

[0074] - Layer 1 filtering: The layer 1 (L1) filtering process performed within the physical layer based on single beam measurement samples.

[0075] -A 1 : The measurement result of a single beam obtained after layer 1 filtering. This result is reported from the physical layer to the RRC layer (i.e., from L1 to L3).

[0076] -Beam selection / merging: Select / merge certain measurements from the beam measurement results reported by the physical layer to obtain the measurement results of the cell.

[0077] -B: The cell measurement results are reported to the RRC layer (i.e. L3).

[0078] - Layer 3 cell quality filtering: Filters the cell measurement results according to filtering parameters.

[0079] -C: Measurement results, used as input for reporting criteria evaluation.

[0080] - Evaluate reporting criteria: Evaluate whether to trigger measurement report reporting based on the configuration parameters of the measurement report.

[0081] -D: Reports a measurement report containing cell measurement results to the base station over the air interface

[0082] - Layer 3 beam filtering: Layer 3 (L3) filtering is performed on the measurement results of a single beam.

[0083] -E: Measurement results of a single beam after filtering operation.

[0084] -Beam selection reporting: The measurement results of X beams are selected from the measurement results of K beams obtained at point E.

[0085] -F: Reports a measurement report containing beam measurement results to the base station over the air interface

[0086] In the RRC connected state, the network sends a measurement configuration (MeasConfig) to the UE via an RRC reconfiguration message. The measurement configuration may include: measurement object configuration, measurement report configuration, measurement identifier configuration, measurement quantity configuration, measurement interval configuration, etc. The UE saves the measurement configuration in the UE's measurement configuration variable (VarMeasConfig).

[0087] Measurement objects: These are objects that the UE needs to measure. The network can configure a measurement object list containing multiple measurement objects. The measurement object configuration primarily includes the time-frequency resource location and subcarrier spacing of the reference signal used for measurement, as well as the measurement frequency information. Measurement objects are identified by measurement object identifiers, with each measurement object corresponding to one measurement object identifier.

[0088] Reporting configurations: Each measurement object can correspond to one or more reporting configurations. The network can configure a reporting configuration list to contain multiple measurement reporting configurations. A measurement reporting configuration primarily includes reporting criteria, measurement events, reference signal type, and report format. Measurement reports are identified by a measurement report identifier, and each measurement report corresponds to a measurement report identifier.

[0089] Measurement identities (Measurement IDs): Used to associate measurement object identifiers (IDs) with measurement report identifiers (IDs). Each measurement identity is associated with one measurement object identifier and one measurement report identifier. The network can configure the measurement identity list to contain multiple measurement identities.

[0090] Quantity configurations: mainly include the configuration of measurement filter parameters.

[0091] Measurement gaps: The time period that a UE may use for measurement.

[0092] In the measurement report configuration, you can configure the type of triggered measurement report, including periodic triggered measurement report and event triggered measurement report. For event triggered measurement report, the network configures the triggering conditions of the measurement report, such as RSRP / RSRQ and time thresholds. When the conditions are met, the UE sends a measurement report to the network. After sending an event-triggered measurement report, the UE can periodically report the measurement report of the event to the base station multiple times. That is, after sending a measurement report triggered by an event, the UE starts a periodic report timer for the measurement ID associated with the event. After the periodic report timer expires, the measurement report corresponding to the measurement ID associated with the event is reported again.

[0093] For a measurement ID, if the measurement report type (corresponding to the measurement ID) is set to event triggered eventTriggered, and for one or more cells in all cell measurement results after layer 3 filtering, the triggering entry condition applied to the measurement event (corresponding to the measurement ID) is met within a period of time (e.g., trigger time timeToTrigger), if the cell is (or includes) the first cell that triggered the measurement event, the UE adds a measurement report entry to the measurement report list variable (VarMeasReportList) for the measurement ID, includes the cell(s) that triggered the measurement event, or the concerned cells, in the cellsTriggeredList, and initiates the measurement reporting procedure. If the triggering event is related to a neighboring cell, such as Event A3 (neighboring cell quality is better than SpCell and exceeds a threshold), Event A4 (neighboring cell quality exceeds a threshold), Event A5 (SpCell is below threshold 1 and neighboring cell quality is above threshold 2), etc., the cells included in cellsTriggeredList are neighboring cells.

[0094] For a measurement ID, if the measurement report type (corresponding to the measurement ID) is set to event triggered eventTriggered, and for one or more cells in all cell measurement results after layer 3 filtering, the trigger leaving condition (leaving condition) applied to the measurement event (corresponding to the measurement ID) is met within a period of time (e.g., trigger time timeToTrigger), and the cell is included in the cellsTriggeredList, the UE deletes the cell from the cellsTriggeredList of the measurement ID in VarMeasReportList. If the leaving report parameter (reportOnLeave) configured by the network is set to TRUE, the UE initiates the measurement reporting process. If the cellsTriggeredList of the measurement ID in VarMeasReportList is empty, the UE deletes the measurement report entry of the measurement ID in VarMeasReportList, and stops the periodic reporting timer of the measurement ID if it is running.

[0095] The measurement configuration variable and the measurement report list variable are both variables within the UE. The measurement configuration variable contains the cumulative configuration of the measurements to be performed by the UE. The measurement report list variable contains the measurement result information that meets the triggering conditions.

[0096] Trigger measurement report based on numberOfTriggeringCells

[0097] When the UE is at a certain height, due to the reduction of obstructions, it may be able to measure more neighboring cells, and the changes in the quality and number of neighboring cells that can be measured will also be faster than when it is on the ground. In order to reduce the reporting of measurement reports and thus reduce the interference caused by UAV UEs, the network can configure an indication of the number of cells that trigger a measurement event (numberOfTriggeringCells). This parameter can be set for measurement events related to neighboring cells, such as eventA3, eventA4, and eventA5. For LTE networks, this parameter can refer to the number of E-UTRA cells that trigger a measurement event. For NR networks, this parameter can refer to the number of NR cells that trigger a measurement event. After the introduction of this parameter, the UE will only trigger a measurement report when the number of cells that meet the measurement event triggering conditions reaches numberOfTriggeringCells for the first time. Even if more cells are found to meet the measurement event triggering conditions, the measurement event will no longer be triggered.

[0098] If the trigger type of the measurement report is event triggered and the corresponding configuration contains the number of triggering cells (numberOfTriggeringCells), if one or more cells meet the triggering conditions of the measurement event, perform the following operations:

[0099] - For the first cell that triggers the event, a measurement report entry is included in the measurement report list variable;

[0100] - If the number of cells in the triggering cell list (cellsTriggeredList) is greater than or equal to numberOfTriggeringCells, the cell(s) that triggered the event, or the concerned cell(s), are included in cellsTriggeredList;

[0101] -Otherwise (i.e., the number of cells in cellsTriggeredList is less than numberOfTriggeringCells), the cell(s) that triggered the event, or the concerned cell(s), are included / added to cellsTriggeredList. If the number of cells in cellsTriggeredList is greater than or equal to numberOfTriggeringCells after adding the cells, the number of reports sent (numberOfReportsSent) is set to 0, and the measurement report process is initiated.

[0102] The cellsTriggeredList is included in the measurement report list variable, which is a variable inside the UE and includes measurement information that meets the triggering condition.

[0103] Triggered measurement reporting based on highly correlated numberOfTriggeringCells

[0104] Furthermore, when the UE is in different altitude ranges, the network can configure different numberOfTriggeringCells, that is, configure highly correlated numberOfTriggeringCells. When the UE changes altitude and enters different altitude ranges, it can use the numberOfTriggeringCells corresponding to the altitude range to determine whether to trigger a measurement report. In the process of this change, the UE may delete the cells and / or the measurement results corresponding to the cells previously saved in cellsTriggeredList, or it may retain the cells and / or the measurement results corresponding to the cells previously saved in cellsTriggeredList to reduce the delay of the measurement report.

[0105] This invention discusses a method for triggering measurement reports based on the number of height-based trigger cells configured in the network. This invention can reduce overly frequent measurement report submissions, conserve air interface resources, reduce power consumption, and mitigate interference. It can also accurately and timely trigger measurement report submissions, avoiding abnormal situations where measurement reports cannot be triggered, and improving UE service performance in mobile scenarios.

[0106] Hereinafter, several embodiments of the present invention for solving the above problems are described in detail.

[0107] In the present invention, "retaining / maintaining the stored cell information in cellsTriggeredList when the altitude range changes" and "deleting / removing the stored cell information in cellsTriggeredList when the altitude range changes" can be called the UE's "processing strategy for the triggered cell list".

[0108] In the present invention, the number of triggering cells based on height and the number of triggering cells not based on height can use the same name (for example: numberOfTriggeringCells), and can be distinguished by being contained in different information elements. Optionally, the number of triggering cells based on height and the number of triggering cells not based on height can also use different names, for example, the number of triggering cells based on height is numberOfTriggeringCellsHeightBased, and the number of triggering cells not based on height is numberOfTriggeringCells. In the following embodiments, the number of triggering cells based on height and the number of triggering cells not based on height use the same name (i.e., numberOfTriggeringCells) but are contained in different information elements for description as an example, that is, unless otherwise specified, numberOfTriggeringCells refers to the number of triggering cells based on height configured by the network, that is, the number of triggering cells based on height contained in the height-related triggering cell number information. If the number of triggering cells based on height and the number of triggering cells not based on height use different names, the numberOfTriggeringCells in the following embodiments can be replaced with the name corresponding to the number of triggering cells based on height (for example, numberOfTriggeringCellsHeightBased).

[0109] Example 1

[0110] Optionally, in step one, the UE receives an RRC-specific message sent by the network, and the RRC-specific message (for example, an RRC reconfiguration RRCReconfiguration message) includes a measurement configuration. The measurement configuration may include but is not limited to: measurement object configuration, measurement report configuration, measurement identifier (measId) configuration, and highly correlated trigger cell number information. The highly correlated trigger cell number information includes but is not limited to: height range (for example, minimum height value, maximum height value, height hysteresis, etc.), and the number of trigger cells based on height (for example, numberOfTriggeringCells) (corresponding to the height range). Optionally, the highly correlated trigger cell number information may be in the form of a list (for example, numberOfTriggeringCellsHeightBasedList), that is, it includes multiple height ranges and the corresponding number of trigger cells based on height. Optionally, the highly correlated trigger cell number information may be included in the measurement report configuration (reportConfig).

[0111] Optionally, the measurement configuration or measurement report configuration may further include the number of trigger cells that are not based on altitude, that is, the number of trigger cells that are not included in the height-related trigger cell number information, to indicate the number of trigger cells that are not related to altitude. Optionally, if the height-related trigger cell number information includes the number of trigger cells based on altitude, that is, the UE is configured with the number of trigger cells based on altitude, the UE ignores the number of trigger cells that are not based on altitude.

[0112] Optionally, in sub-step 1 of step 2, (for each measId included in the measurement configuration variable VarMeasConfig) the UE may perform a first conditional judgment when at least one of the following conditions is met:

[0113] -The trigger type of the measurement report is event triggered;

[0114] -The corresponding reportConfig contains information on the number of height-related triggering cells, and / or the number of triggering cells based on height, and / or the number of triggering cells not based on height;

[0115] - One or more cells meet the triggering conditions of the measurement event (i.e., the measurement event corresponding to the measId);

[0116] - The number of cells in the triggered cell list (cellsTriggeredList) is greater than or equal to the current numberOfTriggeringCells (one or more cells that meet the measurement event triggering conditions in this judgment have not been added to cellsTriggeredList);

[0117] - The measurement report configuration does not contain highly relevant measurement events (e.g. eventA3H1, eventA4H1, eventA5H1, eventA3H2, eventA4H2, eventA5H2);

[0118] -The UE decides to retain / maintain the saved cell information in cellsTriggeredList when the altitude range changes.

[0119] Optionally, "the cell meets the triggering condition of the measurement event" means that all measurement results of the cell after layer 3 filtering meet the entry condition of the measurement event during the triggering time (timeToTrigger).

[0120] Optionally, (for each measId included in the measurement configuration variable VarMeasConfig) the UE performs a first condition judgment, where the first condition includes at least one of the following:

[0121] -The measurement report process has not been initiated for the measId;

[0122] -The value of numberOfReportsSent is less than 1 (or equal to 0);

[0123] - the current numberOfTriggeringCells is different from the numberOfTriggeringCells used in the last triggered measurement report for the measId;

[0124] - the number of cells reported in the last measurement report sent to the network for the measId is less than (or equal to) the current numberOfTriggeringCells;

[0125] -The current numberOfTriggeringCells is greater than (or equal to) the numberOfTriggeringCells used in the last triggered measurement report of the measId.

[0126] When the UE determines that the first condition is met, the UE sets the number of measurement report sending times (numberOfReportsSent) (corresponding to the measId) to 0, and initiates the measurement report process.

[0127] Optionally, numberOfReportsSent is defined in the measurement report variable list (VarMeasReportList).

[0128] Optionally, the current numberOfTriggeringCells may refer to the numberOfTriggeringCells currently used, or may refer to the numberOfTriggeringCells corresponding to the altitude range in which the UE is currently located.

[0129] Optionally, numberOfTriggeringCells refers to the number of height-based triggering cells configured by the network, that is, the number of height-based triggering cells included in the height-related triggering cell number information.

[0130] Optionally, in sub-step 2 of step 2, if the number of cells in the triggered cell list (cellsTriggeredList) is less than numberOfTriggeringCells, the cell(s) that triggered the measurement event, or the concerned cell(s), are included / added in cellsTriggeredList. After the cell is added to cellsTriggeredList, if the number of cells in cellsTriggeredList is greater than or equal to numberOfTriggeringCells, the number of sent reports (numberOfReportsSent) (corresponding to the measId) is set to 0, and the measurement report process is initiated.

[0131] Alternatively, optionally, in sub-step 2 of step 2, if the number of cells in the triggered cell list (cellsTriggeredList) is less than numberOfTriggeringCells, the cell (one or more) that triggers the measurement event, or the concerned cell (one or more), is included / added in cellsTriggeredList. After the cell is added to cellsTriggeredList, if the number of cells in cellsTriggeredList is greater than or equal to numberOfTriggeringCells, if at least one of the following conditions is met, the number of sent reports (numberOfReportsSent) (corresponding to the measId) is set to 0, and the measurement report process is initiated:

[0132] -The current numberOfTriggeringCells is greater than (or equal to) the numberOfTriggeringCells used in the last triggered measurement report of the measId;

[0133] - The number of cells reported in the last measurement report sent to the network for the measId is less than (or equal to) the current numberOfTriggeringCells.

[0134] Optionally, step 2 occurs after the UE performs measurement and performs layer 3 filtering on the measurement result.

[0135] Optionally, in step 3, the UE reports a measurement report to the network via RRC dedicated signaling (eg, a MeasurementReport message). Optionally, the measurement report carries the current numberOfTriggeringCells.

[0136] Example 2

[0137] Optionally, step 1 of this embodiment is the same as step 1 of embodiment 1.

[0138] Optionally, in sub-step 1 of step 2, (for each measId included in the measurement configuration variable VarMeasConfig) the UE may perform a second conditional judgment when at least one of the following conditions is met:

[0139] -The trigger type of the measurement report is event triggered;

[0140] -The corresponding reportConfig contains information on the number of height-related triggering cells, and / or the number of triggering cells based on height, and / or the number of triggering cells not based on height;

[0141] - One or more cells meet the triggering conditions of the measurement event (i.e., the measurement event corresponding to the measId);

[0142] - The number of cells in the triggered cell list (cellsTriggeredList) is greater than or equal to the current numberOfTriggeringCells (one or more cells that meet the measurement event triggering conditions in this judgment have not been added to cellsTriggeredList);

[0143] - The measurement report configuration does not contain highly relevant measurement events (e.g. eventA3H1, eventA4H1, eventA5H1, eventA3H2, eventA4H2, eventA5H2);

[0144] -The UE decides to delete / remove the stored cell information in cellsTriggeredList when the altitude range changes.

[0145] Optionally, "the cell meets the triggering condition of the measurement event" means that all measurement results of the cell after layer 3 filtering meet the entry condition of the measurement event during the triggering time (timeToTrigger).

[0146] Optionally, (for each measId included in the measurement configuration variable VarMeasConfig) the UE performs a second condition judgment, where the second condition includes at least one of the following:

[0147] - the current numberOfTriggeringCells is different from the numberOfTriggeringCells used in the last triggered measurement report for the measId;

[0148] -The current numberOfTriggeringCells is greater than (or equal to) the numberOfTriggeringCells used in the last triggered measurement report of the measId;

[0149] - The number of cells reported in the last measurement report sent to the network for the measId is less than (or equal to) the current numberOfTriggeringCells.

[0150] When the UE determines that the second condition is met, the UE sets the number of measurement report sending times (numberOfReportsSent) (corresponding to the measId) to 0, and initiates the measurement report process.

[0151] Optionally, numberOfReportsSent is defined in the measurement report variable list (VarMeasReportList). Optionally, current numberOfTriggeringCells may refer to the currently used numberOfTriggeringCells, or may refer to the numberOfTriggeringCells corresponding to the altitude range in which the UE is currently located.

[0152] Optionally, numberOfTriggeringCells refers to the number of height-based triggering cells configured by the network, that is, the number of height-based triggering cells included in the height-related triggering cell number information.

[0153] Optionally, sub-step 2 of step 2 of this embodiment is the same as sub-step 2 of step 2 of embodiment 1.

[0154] Optionally, step 2 occurs after the UE performs measurement and performs layer 3 filtering on the measurement result.

[0155] Optionally, step three of this embodiment is the same as step three of embodiment 1.

[0156] Example 3

[0157] According to Example 1, the steps of this embodiment are the same as step 1 of Example 1. Further, compared with step 1 of Example 1, in step 1 of this embodiment, the measurement object configuration may further include highly correlated measurement SSB information, and / or the measurement report configuration may further include highly correlated measurement events.

[0158] The height-related measured SSB information includes, but is not limited to, a height range (e.g., minimum height value, maximum height value, height hysteresis, etc.), and a measured SSB (corresponding to a certain height range). The measured SSB may refer to a set of synchronization signal SS blocks (one or more) to be measured within the SMTC measurement interval (duration).

[0159] Height-related measurement events include, but are not limited to, eventA3H1, eventA4H1, eventA5H1, eventA3H2, eventA4H2, and eventA5H2. The entry conditions for these events must satisfy both the A measurement condition (for example, the quality of the neighboring cell is above a certain threshold) and the H measurement condition (the UE's height is below or above a certain threshold).

[0160] Optionally, in step 2, when the UE changes its altitude range and thus changes the measured SSB, if the UE decides to retain the previous measurement results (after layer 3 filtering, corresponding to the cell), the UE also retains the cell information stored in cellsTriggeredList; if the UE decides to delete the previous measurement results (after layer 3 filtering, corresponding to the cell), the UE also deletes the cell information stored in cellsTriggeredList.

[0161] Optionally, when the UE changes its altitude range and thus changes the measurement event, if the UE decides to retain the previous measurement results (after layer three filtering, corresponding to the cell), the UE also retains the cell information stored in cellsTriggeredList; if the UE decides to delete the previous measurement results (after layer three filtering, corresponding to the cell), the UE also deletes the cell information stored in cellsTriggeredList.

[0162] Optionally, when the altitude range is changed and thus the numberOfTriggeringCells is changed, if the UE decides to retain the cell information stored in cellsTriggeredList, the UE also retains the previous measurement results (after layer three filtering, corresponding to the cell); if the UE decides to delete the cell information previously stored in cellsTriggeredList, the UE also retains the previous measurement results (after layer three filtering, corresponding to the cell).

[0163] Optionally, step 2 occurs after the UE performs measurement and performs layer 3 filtering on the measurement result.

[0164] Example 4

[0165] According to Example 1, Example 2 and Example 3, optionally, the UE decides on a processing strategy for the triggered cell list, that is, the UE decides to retain / maintain the cell information stored in cellsTriggeredList when the altitude range changes, or the UE decides to delete / remove the cell information stored in cellsTriggeredList when the altitude range changes, and the decision can be made based on a triggered cell list processing strategy indication sent by the network. Optionally, the triggered cell list processing strategy indication can be included in the measurement configuration. Optionally, in a case where the triggered cell list processing strategy indication indicates retaining the cell information, the UE retains / maintains the cell information stored in cellsTriggeredList when the altitude range changes; in a case where the triggered cell list processing strategy indication indicates deleting the cell information, the UE deletes the cell information stored in cellsTriggeredList when the altitude range changes.

[0166] Optionally, the UE may determine its own altitude range based on height-related trigger cell number information, and / or height-related measurement events, and / or height-related measurement SSB information.

[0167] Example 5

[0168] According to Example 1, the steps of this embodiment are the same as step 1 of Example 1. Furthermore, compared to step 1 of Example 1, in step 1 of this embodiment, the measurement object configuration may further include highly relevant measurement SSB information, and / or the measurement report configuration may further include highly relevant measurement events (e.g., eventA3H1, eventA4H1, eventA5H1, eventA3H2, eventA4H2, eventA5H2).

[0169] Optionally, the height range in the highly correlated trigger cell number information and the height range in the highly correlated measurement SSB information are configured identically.

[0170] Optionally, the height range in the height-related triggering cell number information and the height range in the height-related measurement event are configured the same.

[0171] Figure 2 is a simplified block diagram of the user equipment (UE) according to the present invention. As shown in Figure 2 , the user equipment (UE) 200 includes a processor 201 and a memory 202. Processor 201 may include, for example, a microprocessor, a microcontroller, or an embedded processor. 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. Memory 202 stores program instructions. When executed by processor 201, these instructions may execute the method described in detail herein.

[0172] The program running on the device according to the present invention can be a program that controls the central processing unit (CPU) to enable the computer to implement the functions of the embodiments of the present invention. The program or the information processed by the program can 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.

[0173] The program for realizing each embodiment of the present invention function can be recorded on a computer-readable recording medium. Can realize corresponding function by making a computer system read the program recorded on the recording medium and executing these programs. So-called "computer system" herein can be the computer system embedded in the device, can include operating system or hardware (such as 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.

[0174] 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 event that new integrated circuit technologies have emerged to replace existing integrated circuits due to advances in semiconductor technology, one or more embodiments of the present invention may also be implemented using these new integrated circuit technologies.

[0175] Furthermore, the present invention is not limited to the above-described embodiments. Although various examples of the embodiments have been described, the present invention 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.

[0176] As described above, embodiments of the present invention 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 invention also includes any design changes that do not deviate from the main purpose of the present invention. In addition, various modifications can be made to the present invention 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 invention. In addition, components with the same effect described in the above embodiments can be replaced with each other.

Claims

1. A method performed by a user equipment UE, comprising: Receiving an RRC-specific message sent by a network, where the RRC-specific message includes a measurement report configuration; Determine whether to execute the first condition judgment according to the measurement report configuration and the processing strategy for the triggered cell list; In the case where it is determined that the first condition needs to be executed, the first condition is determined; as well as When it is determined that the first condition is met, a measurement report process is initiated.

2. The method according to claim 1, wherein: The processing strategy for the triggering cell list includes: Maintaining a list of triggering cells as the altitude range changes; and The trigger cell list is deleted when the altitude range changes.

3. The method according to claim 1, wherein: If at least one of the following conditions is met, it is determined that the first condition judgment needs to be performed: The measurement report configuration contains information on the number of highly correlated trigger cells; The number of cells in the trigger cell list is greater than or equal to the current number of height-based trigger cells; The measurement report configuration does not include highly relevant measurement events; as well as Determines to retain saved cell information in the trigger cell list when the altitude range changes.

4. The method according to claim 1, wherein: The first condition includes at least one of the following: A measurement report process has not been initiated for the measurement ID; The number of report sending times is less than 1 or equal to 0; The current number of triggered cells based on height is different from the value of the number of triggered cells based on height used in the last triggered measurement report for the measurement ID; The number of cells reported in the last measurement report sent to the network for the measurement ID is less than or equal to the current number of height-based triggered cells; as well as The current number of height-based triggered cells is greater than or equal to the number of height-based triggered cells used in the last triggered measurement report of the measurement ID.

5. The method according to claim 1, wherein: If the number of cells in the trigger cell list is less than the number of triggered cells based on height, the cell that triggered the measurement event is added to the trigger cell list. After the cell is added to the trigger cell list, if the number of cells in the trigger cell list is greater than or equal to the number of triggered cells based on height, the measurement report process is initiated if at least one of the following is met: The number of cells reported in the last measurement report sent to the network for the measurement ID is less than or equal to the current number of height-based triggered cells; as well as The current number of height-based triggered cells is greater than or equal to the number of height-based triggered cells used in the last triggered measurement report of the measurement ID.

6. The method according to claim 4 or 5, wherein: The current number of height-based trigger cells refers to the number of height-based trigger cells configured in the network currently in use, or refers to the number of height-based trigger cells configured in the network corresponding to the current height range.

7. A user equipment, comprising: processor; as well as Memory, which stores instructions, Wherein, when the instructions are executed by the processor, the method according to any one of claims 1 to 6 is performed.

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