WO2022257976A1

WO2022257976A1 - Method for performing rrm measurement relaxation, and user equipment

Info

Publication number: WO2022257976A1
Application number: PCT/CN2022/097651
Authority: WO
Inventors: 刘蕾; 刘仁茂
Original assignee: 夏普株式会社; 刘蕾
Priority date: 2021-06-11
Filing date: 2022-06-08
Publication date: 2022-12-15
Also published as: CN115474223A

Abstract

The present invention provides a method for performing RRM measurement relaxation executed by a user equipment, and a user equipment. The method comprises: performing corresponding RRM measurement relaxation evaluation on the basis of an RRM measurement relaxation evaluation configuration received from a base station; reporting an RRM measurement relaxation evaluation result to the base station when the evaluation result is that an RRM measurement relaxation condition is satisfied; and receiving an RRM measurement relaxation indication from the base station, the RRM measurement relaxation indication being used for the user equipment to perform RRM measurement relaxation. The method further comprises: before performing at least one of performing the RRM measurement relaxation evaluation and reporting the RRM measurement relaxation evaluation result to the base station, determining whether a predetermined trigger condition is satisfied; and correspondingly, when the predetermined trigger condition is satisfied, performing the RRM measurement relaxation evaluation, and/or when the predetermined trigger condition is satisfied, reporting the evaluation result to the base station.

Description

Method for performing RRM measurement relaxation and user equipment

technical field

The present invention relates to the technical field of wireless communication, and more specifically, the present invention relates to a method for performing RRM measurement relaxation by user equipment and corresponding user equipment.

Background technique

With the standardization and gradual commercialization of 5G, its application scenarios are becoming more and more diversified. First of all, for industrial wireless sensor scenarios, there are a wide variety of sensors with different uses. Some of these sensors require high reliability, low latency or large bandwidth, some require ultra-low cost and long battery life, and some require something in between. This part of equipment can be considered as some reduced capacity NR equipment (RedCap UE). Second, with the planning and development of smart cities, video surveillance and information collection are commonly used, and wireless devices used for such applications also have similar characteristics of the reduced-capability NR devices mentioned above. Finally, numerous wearable devices, such as smart watches, smart bracelets, health status monitors, etc., also have the characteristics of NR devices with reduced capabilities. For this type of NR equipment with reduced capacity, the original standards cannot well support it to achieve the best performance requirements.

Based on the above reasons, in March 2021, at the 3rd Generation Partnership Project (3rd Generation Partnership Project: 3GPP) RAN#91e plenary meeting, the work item for the reduced capacity NR equipment of version 17 (see non-patent literature: RP- 210918 Revised WID on support of reduced capability NR devices) was approved. This work item identifies the applicable scenarios of the project as industrial wireless sensors, video surveillance, and wearable devices. One of the goals of this work item is the study of power savings and battery life enhancements for reduced-capability NR devices, including reduced downlink control channel (PDCCH) monitoring, eDRX (extended non-active) in RRC inactive or idle states. continuous reception), and radio resource management (RRM) measurement relaxation.

The relaxation of RRM measurement for NR devices with reduced capabilities mainly includes the relaxation of measurement for neighboring cells. RRM measurement relaxation can be performed in RRC idle state, inactive state and connected state. For the RRC connected state, the network can configure the relevant parameters of the RRM measurement relaxation criterion for the RedCap UE, and notify the network when the RedCap UE meets the RRM relaxation criterion, and the network controls whether to perform RRM measurement relaxation and how to perform RRM measurement relaxation.

The present invention discusses when the RedCap UE evaluates the RRM measurement relaxation criterion in the RRC connection state, how to notify the network of satisfying the RRM measurement relaxation criterion, and the specific reporting timing, so that the UE can be more energy-efficient.

Contents of the invention

An object of the present invention is to provide a method performed by a user equipment for performing RRM measurement relaxation.

According to an aspect of the present invention, there is provided a method for performing RRM measurement relaxation performed by a user equipment, including: performing a corresponding RRM measurement relaxation evaluation based on an RRM measurement relaxation evaluation configuration received from a base station; When the RRM measurement relaxation condition is met, report the RRM measurement relaxation evaluation result to the base station; and receive an RRM measurement relaxation indication from the base station, where the RRM measurement relaxation indication is used for the user equipment to perform RRM measurement relaxation. Wherein, the method further includes: before performing at least one of performing the RRM measurement relaxation evaluation and reporting the RRM measurement relaxation evaluation result to the base station, determining whether a predetermined trigger condition is met; and correspondingly: When the predetermined trigger condition is met, perform the RRM measurement relaxation evaluation; and/or when the predetermined trigger condition is satisfied, report the evaluation result to the base station.

Optionally, the predetermined trigger condition is associated with the RRM measurement relaxation evaluation configuration and the measurement result of the current special cell where the user equipment is located.

Optionally, when the RRM measurement relaxation assessment configuration includes a static assessment configuration, performing the corresponding RRM measurement relaxation assessment includes: performing the corresponding static assessment. The predetermined trigger condition includes obtaining the measurement result of the current special cell of the user equipment and any of the following: the RRM measurement relaxation evaluation configuration does not include at least one of the non-cell edge evaluation configuration and the s-MeasureConfig evaluation configuration One; the RRM measurement relaxation evaluation configuration includes at least one of the non-cell edge evaluation configuration and the s-MeasureConfig evaluation configuration, and correspondingly, the measurement result is not greater than that configured in the RRM measurement relaxation evaluation configuration The threshold value of the measurement result included in one or both of the non-cell-edge evaluation configuration and the s-MeasureConfig evaluation configuration.

Optionally, when the RRM measurement relaxation evaluation configuration includes non-cell-edge evaluation configuration, performing corresponding RRM measurement relaxation evaluation includes: performing corresponding non-cell-edge evaluation. The predetermined trigger condition includes obtaining the measurement result of the current special cell of the user equipment and any one of the following: the RRM measurement relaxation evaluation configuration does not include at least one of static evaluation configuration and s-MeasureConfig evaluation configuration The RRM measurement relaxation evaluation configuration includes the static evaluation configuration, and the static evaluation result corresponding to the static evaluation configuration does not meet the static criterion; the RRM measurement relaxation evaluation configuration includes the s-MeasureConfig evaluation configuration, And the measurement result is not greater than the measurement result threshold included in the s-MeasureConfig evaluation configuration; the RRM measurement relaxation evaluation configuration includes the non-cell edge evaluation configuration and the s-MeasureConfig evaluation configuration, and is consistent with the The static evaluation result corresponding to the static evaluation configuration does not satisfy the static criterion, and the measurement result is not greater than the measurement result threshold included in the s-MeasureConfig evaluation configuration.

Optionally, the static evaluation configuration configured in the RRM measurement relaxation evaluation configuration includes a change threshold value and a duration threshold value of the measurement result of the current special cell, and the static criterion includes the following conditions: The duration during which the change value of the measurement result of the special cell is less than the change threshold is not lower than the duration threshold.

Optionally, the method further includes: within a predetermined time period after reporting the evaluation result to the base station, no longer reporting the RRM measurement relaxation evaluation result to the base station; and/or after reporting the evaluation result to the base station When the number of evaluation results is less than the maximum number of reports and the RRM measurement relaxation evaluation result satisfies the RRM measurement relaxation criterion, report the RRM measurement relaxation evaluation result to the base station.

Optionally, the method further includes: when receiving the RRM measurement relaxation indication from the base station, if the RRM measurement relaxation evaluation configuration does not include the s-MeasureConfig evaluation configuration, or the RRM measurement relaxation evaluation configuration Including the s-MeasureConfig evaluation configuration and the measurement result of the current special cell where the user equipment is located is not greater than the measurement result threshold value included in the s-MeasureConfig evaluation configuration, then perform RRM according to the RRM measurement relaxation indication Measure relaxation.

Optionally, the quiescent assessment includes leaving a quiescent state assessment for assessing whether the user equipment leaves a quiescent state and entering a quiescent state assessment for assessing whether the user equipment enters a quiescent state from a non-quiescent state, corresponding to The evaluation criteria for leaving the static state are the same as or stricter than the evaluation criteria for entering the static state.

Optionally, the non-cell-edge assessment includes entering non-cell-edge assessment for assessing whether the user equipment leaves from the cell edge of the current special cell and enters the cell center and for assessing whether the user equipment exits from the cell When the center enters the cell edge and leaves the non-cell edge evaluation, the corresponding condition of leaving the non-cell edge evaluation criterion is the same as or stricter than the condition of the non-cell edge assessment criterion.

Optionally, the user equipment reports a message to the base station through an event-type measurement report.

According to another aspect of the present invention, there is also provided a user equipment, including: a processor; and a memory storing instructions, wherein the instructions execute the above method when executed by the processor.

According to the present invention, RRM measurement relaxation evaluation can be performed at an appropriate timing and/or a report can be sent to a base station at an appropriate timing, so that more energy can be saved.

Description of drawings

FIG. 1 is a schematic diagram illustrating a measurement model of NR according to an embodiment of the present invention.

2A-2C are exemplary flowcharts of a method for performing RRM measurement relaxation performed by a user equipment.

3 is a flowchart of another example of a method for performing RRM measurement relaxation performed by a user equipment

Fig. 4 is a schematic diagram for explaining non-cell edge and cell edge.

Fig. 5 is a brief structural block diagram of the user equipment UE involved in the present invention.

Detailed ways

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

Some of the terms involved in the present invention are described below, and the specific meaning of the terms can be found in the latest standard specification of 3GPP,

RedCap: Reduced capability

UE: User Equipment user equipment

NR: New Radio new generation wireless technology

MAC: Medium Access Control multimedia access control

MAC CE: MAC control element MAC control element

RRM: Radio Resource Management wireless resource management

RRC: Radio Resource Control radio resource control

RRC_CONNECTED: RRC connected state

RRC_INACTIVE: RRC inactive state

RRC_IDLE: RRC idle state

RAN: Radio Access Network, wireless access layer

PDCCH: Physical downlink control channel, physical downlink control channel

PBCH: Physical broadcast channel, physical broadcast channel

SFN: System Frame Number system frame number

PDU: Protocol Data Unit protocol data unit

SSB: SS/PBCH block, synchronization signal/physical broadcast channel block

DCI: Downlink Control Information

C-RNTI: Cell Radio Network Temporary Identification

P-RNTI: Paging RNTI, paging wireless network temporary identifier

PDCCH: Physical Downlink Control Channel Physical Downlink Control Channel

RSRP: Reference Signal Received Power Reference Signal Received Power

RSRQ: Reference Signal Received Quality Reference Signal Received Quality

SpCell: Special Cell special cell

DC: Dual Connectivity dual connection

MCG: Master Cell Group main cell group

SCG: Secondary Cell Group secondary cell group

PCell: Primary Cell main cell

PSCell: Primary SCG Cell SCG primary cell

In the present invention, the network, base station and RAN can be used interchangeably, and 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 a subsequent evolution version of 3GPP Other networks defined in .

In the present invention, the user equipment UE may refer to a device with reduced capability (RedCap UE) described in the background art, or a device with RedCap capability, or a static setting, or a device that supports RRM measurement relaxation, or supports RRM measurement in a connected state Relaxed devices may also refer to other types of NR devices or LTE devices.

The prior art involved in the embodiments of the present invention will be briefly described below.

The measurement model of NR is shown in Fig. 1. In Figure 1:

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

- Layer 1 filtering: Layer 1 (L1) filtering process within the physical layer based on a single beam measurement sample.

-A ¹ : the measurement result of a single beam obtained after layer 1 filtering, and this result is reported from the physical layer to the RRC layer (that is, reported from L1 to L3).

- Beam selection/combination: From the beam measurement results reported by the physical layer, select/combine certain measurements to obtain cell measurement results.

-B: The cell measurement result is reported to the RRC layer (ie L3).

- Layer 3 cell quality filtering: perform filtering processing on cell measurement results according to filtering parameters, etc.

-C: Measurement results to be used as input for the evaluation of reporting criteria.

-Evaluate the reporting criteria: according to the configuration parameters of the measurement report, evaluate whether it is necessary to trigger the reporting of the measurement report.

-D: report a measurement report containing cell measurement results to the base station on the air interface

- Layer 3 Beam Filtering: Layer 3 (L3) filtering is performed on measurements from individual beams.

-E: Single beam measurements obtained after filtering operations.

- Beam selection report: Select the measurement results of X beams from the measurement results of K beams obtained at point E.

-F: report the measurement report containing the beam measurement results to the base station on the air interface

In the RRC connected state, the base station can perform measurement configuration on the UE through an RRC reconfiguration message (RRCReconfiguration). The measurement configuration can include the information element s-MeasureConfig, which can include the RSRP threshold configuration. If the base station does not configure this information element, or if this information element is configured and the RSRP of the SpCell cell obtained by the UE after layer 3 filtering is lower than the configured RSRP threshold, the UE measures the neighboring cells according to the measurement configuration; otherwise, it does not need to Measurements of neighboring cells. The SpCell refers to the PCell of the MCG or the PSCell of the SCG for the DC scenario, and refers to the PCell for the non-DC scenario.

In RRC connected state, the base station can send measurement configuration to UE, including measurement object configuration, measurement report configuration, measurement identification configuration, quality configuration, measurement interval (gap) configuration, etc. In the measurement report configuration, you can configure the types of triggered measurement reports, including periodic measurement reports and event measurement reports. For the event measurement report, the base station configures the trigger criteria of the measurement report, that is, threshold values such as various RSRP/RSRP and time, and the UE can send the measurement report to the base station when the criteria are satisfied. After sending the event-triggered measurement report, the UE periodically reports the event-triggered measurement report to the base station before receiving a response from the base station.

In 3GPP Release 16, RRM measurement relaxation for RRC idle state and inactive state is standardized and defined in the latest 3GPP standard specification TS 38.304 (see section 5.2.4.9). The base station broadcasts the RRM measurement relaxation configuration parameters in the RRC idle state and inactive state through system messages, including the switch of low-speed mobile evaluation and non-cell edge evaluation, the decision threshold and decision time parameters of low-speed mobile and non-cell edge evaluation, etc. First, the UE normally measures the quality of its own cell, and when the quality of its own cell is lower than the threshold value broadcast by the base station through the system message for starting the measurement of neighboring cells, it judges and executes RRM measurement relaxation. If the base station configures low-speed evaluation and non-cell-edge evaluation at the same time, the UE evaluates whether it is moving at a low speed or is not at the edge of the cell. After the cell performs normal neighbor cell measurement for a period of time (the length of time the base station broadcasts through system messages), the UE may not perform neighbor cell measurement within 1 hour; if the UE evaluation result only meets low-speed movement or is not at the edge of the cell In one of them, the UE may use a longer time interval to measure neighboring cells. If the base station only configures low-speed evaluation, the UE evaluates that it is moving at a low speed, and the UE can use a longer time interval to measure neighboring cells. If the base station only configures non-cell-edge evaluation, and the UE evaluates that it is not at the cell edge, the UE can use a longer time interval to measure neighboring cells.

For RRC connected state, the base station can configure static evaluation and/or non-cell edge evaluation for RRM measurement relaxation for RedCap UE. When the base station configures different evaluation criteria, how the UE determines whether to perform the evaluation of the RRM measurement relaxation criteria according to the configuration, when to report the condition of satisfying the criteria to the base station, and how to report to the base station need to be studied.

Hereinafter, a description will be given of related art of the present invention.

Through the present invention, the UE can evaluate and report the relaxation criterion on the RRM side when necessary according to different configuration conditions of the base station, thereby achieving the effect of further saving power consumption without affecting transmission performance.

Hereinafter, several embodiments of the present invention for the above-mentioned problems are described in detail.

Example 1

2A to 2C show flowcharts of different examples of this embodiment. In FIGS. 2A to 2C , for convenience of description, the same steps are denoted by the same reference numerals.

As shown in FIG. 2A to FIG. 2C , this embodiment includes

steps

201 , 203 , 205 , 207 and 209 , and may optionally include step 20A in different stages of execution, that is, trigger condition judgment processing.

Optionally, in step 201, the UE receives the RRM measurement relaxation evaluation configuration sent by the base station.

Wherein, the base station may send the RRM measurement relaxation evaluation configuration through a system message (such as but not limited to one of SIB1, SIB2, SIB3, SIB4, SIB5, or adding a new SIB), or RRC dedicated signaling (such as but not limited to : RRC reconfiguration message, RRC release message, etc., or add a new RRC message).

Among them, the RRM measurement relaxation evaluation configuration may include one or more of the following:

1) static evaluation configuration;

2) Non-cell edge evaluation configuration;

3) s-MeasureConfig evaluates the configuration.

Each of these configurations may include their respective switch configurations, ie for enabling related functions.

The s-MeasureConfig may contain the RSRP threshold value of version 16 (ie ssb-RSRP, csi-RSRP), and may also contain the RSRP and/or RSRQ threshold value dedicated to the stationary UE or the RedCap UE.

Among them, the non-cell edge evaluation can include RSRP and/or RSRQ threshold value, which is used for static UE or RedCap UE to evaluate whether it is at the cell edge, and the RSRP and/or RSRQ threshold value can be smaller than the RSRP/RSRQ threshold configured in s-MeasureConfig RSRQ threshold. Non-cell edge estimates can also be expressed as s-MeasureConfig for stationary devices.

Wherein, the static evaluation may include information such as RSRP and/or RSRQ change threshold, time threshold, and the like.

Optionally, in step 203, the UE evaluates the RRM measurement relaxation criterion.

Wherein, optionally, as shown in FIG. 2A and FIG. 2B , before performing the evaluation of the RRM measurement relaxation criterion, it may be determined in 20A whether a predetermined trigger condition is met. The predetermined trigger condition may be associated with the RRM measurement relaxation evaluation configuration and the measurement result of the current special cell where the user equipment is located. The measurement result may be the RSRP and/or RSRQ of the current special cell obtained by measuring the current special cell. Correspondingly, the measurement result threshold value in the present invention may be an RSRP threshold value and/or an RSRQ threshold value.

When the RRM measurement relaxation evaluation configuration includes the static evaluation configuration, the UE may perform static criterion evaluation (also referred to as UE performing entry resting state assessment, hereinafter used interchangeably):

1) Optionally, if neither s-MeasureConfig nor non-cell edge evaluation is configured;

2) Optionally, if s-MeasureConfig is not configured, or if s-MeasureConfig is configured and the RSRP and/or RSRQ of SpCell is less than (or less than or equal to) the RSRP and/or RSRQ threshold value configured in s-MeasureConfig;

3) Optionally, if non-cell edge evaluation is not configured, or if non-cell edge evaluation is configured and the RSRP and/or RSRQ of SpCell is less than (or less than or equal to) the RSRP and/or RSRQ threshold configured in non-cell edge evaluation value;

4) Optionally, if s-MeasureConfig is configured but non-cell edge evaluation is not configured, and the RSRP and/or RSRQ of the SpCell is less than (or less than or equal to) the RSRP and/or RSRQ threshold configured in s-MeasureConfig;

5) Optionally, if non-cell edge evaluation is configured but s-MeasureConfig is not configured, and the RSRP and/or RSRQ of SpCell is less than (or less than or equal to) the RSRP and/or RSRQ threshold value configured in non-cell edge evaluation

6) Optionally, if both s-MeasureConfig and non-cell edge evaluation are configured, and the RSRP and/or RSRQ of SpCell is less than (or less than or equal to) the RSRP threshold in s-MeasureConfig is greater than or equal to (or greater than) non-cell RSRP and/or RSRQ thresholds configured in edge evaluation;

7) Optionally, if the base station is configured with static evaluation configuration, when the RSRP and/or RSRQ measurement result of the SpCell is acquired.

Wherein, the preconditions of scenarios 1) to 6) are that the UE has received that the base station configures the static evaluation configuration, and the UE has obtained the RSRP and/or RSRQ measurement results of the SpCell.

Wherein, optionally, when the RRM measurement relaxation evaluation configuration includes static evaluation configuration, the UE may perform non-cell edge evaluation (also It can be referred to as the UE performing non-cell edge assessment, which can be used interchangeably in the following):

1) Optionally, if neither static evaluation nor s-MeasureConfig is configured;

2) Optionally, if the static evaluation is not configured, or if the static criterion is configured and the static criterion is not satisfied after evaluation, evaluate the non-cell edge criterion;

3) Optionally, if s-MeasureConfig is not configured, or if s-MeasureConfig is configured and the RSRP and/or RSRQ of SpCell is less than (or less than or equal to) the RSRP and/or RSRQ threshold value configured in s-MeasureConfig;

4) Optionally, if s-MeasureConfig is configured but static evaluation is not configured, and the RSRP and/or RSRQ of the SpCell is less than (or less than or equal to) the RSRP and/or RSRQ threshold configured in s-MeasureConfig;

5) Optionally, if static evaluation is configured but s-MeasureConfig is not configured, and the evaluation does not meet the static criterion;

6) Optionally, if both s-MeasureConfig and static evaluation are configured, and the RSRP and/or RSRQ of SpCell is less than (or less than or equal to) the RSRP and/or RSRQ threshold value configured in s-MeasureConfig, and the evaluation does not meet static criterion;

7) Optionally, if the base station is configured with non-cell edge evaluation configuration, when the RSRP and/or RSRQ measurement results of SpCell are obtained;

Wherein, optionally, the preconditions of scenarios 1) to 6) may be that the UE has received that the base station configures the non-cell edge evaluation configuration, and the UE has acquired the RSRP and/or RSRQ measurement results of the SpCell.

Wherein, the conditions met by the static criterion, for example: the change of RSRP and/or RSRQ of the SpCell is less than the RSRP and/or RSRQ change threshold for a period of time, this period of time is the time threshold configured in the static criterion.

Then, in 205, the UE may determine whether the RRM relaxation measurement evaluation result meets the measurement relaxation condition, that is, whether the RRM relaxation measurement criterion is satisfied.

Optionally, in step 205, if the UE is evaluated and determined to satisfy the RRM measurement relaxation (ie satisfy the stationary criterion and/or the non-cell-edge criterion), send a report to the base station, that is, send the RRM relaxation measurement evaluation result to the base station.

Wherein, optionally, the report may include: static indication and/or non-cell edge indication. The report can be reported to the base station through the UEAssistanceInformation message, or other RRC proprietary messages, or MAC CE. This report can also be regarded as entering a static state and/or entering a non-cell edge, which can be used interchangeably hereinafter, and the condition for judging entry is to judge static evaluation and/or non-cell edge evaluation.

Wherein, optionally, as shown in FIG. 2B and FIG. 2C , before sending the report to the base station, the UE may determine in 20A whether a predetermined trigger condition is satisfied, and further send the report to the base station in 207 when it is determined that the predetermined trigger condition is satisfied. Report. If the predetermined trigger condition is not met, no report is sent. The predetermined trigger condition here may be the same as the predetermined trigger condition described above. For example, if it is in one of the static assessment scenarios in step 20A, and the static criterion is satisfied, a report is sent to the base station. Optionally, if the UE is in one of the non-cell-edge evaluation scenarios in step 20A and meets the non-cell-edge criterion, then send a report to the base station. For example, after receiving the static evaluation configuration configured by the base station, the UE evaluates the static criterion when it obtains the RSRP and/or RSRQ measurement results of SpCell; and if s-MeasureConfig is not configured, or if s-MeasureConfig is configured and SpCell /or when the RSRQ is less than (or less than or equal to) the RSRP and/or the RSRQ threshold configured in s-MeasureConfig, if the inactivity criterion is satisfied, the inactivity indication is reported to the base station. Optionally, the scenario where the UE sends the report to the base station may also be that, after judging that both the static criterion and the non-cell edge criterion are satisfied, the UE sends the report to the base station.

Optionally, after the UE sends the report to the base station, it starts the timer T1, and during the running of the timer T1, even if the RRM measurement relaxation criterion is satisfied, the report is not reported to the base station; that is, only when T1 is not running, the RRM measurement relaxation criterion is satisfied Reported to the base station. If the T1 timer expires, if the RRM measurement relaxation criterion is satisfied, the report is reported to the base station.

Optionally, after the UE sends the report to the base station, the counter N1 is incremented by 1. Only when the value of N1 is less than (or less than or equal to) Nmax, the report is reported to the base station. Nmax is the maximum number of reports configured by the base station.

Optionally, in step 207, the UE receives the RRM measurement relaxation configuration or the RRM measurement relaxation indication sent by the base station.

Optionally, if s-MeasureConfig is not configured, or if s-MeasureConfig is configured and the RSRP and/or RSRQ of SpCell is less than (or less than or equal to) the RSRP and/or RSRQ threshold value configured in s-MeasureConfig, the UE according to the RRM Measurement relaxation configuration or RRM measurement relaxation indication, perform relaxed measurement on neighboring cells or stop neighboring cell measurement for a period of time; otherwise, UE does not need to process the configuration of the base station, and does not perform neighboring cell measurement.

Optionally, during T1 running, if receiving the RRM measurement relaxation configuration or RRM measurement relaxation instruction sent by the base station, the UE stops the T1 timer.

After receiving the RRM measurement relaxation configuration or the RRM measurement relaxation instruction sent by the base station, the UE clears the counter N1 to zero.

Although the process of whether the predetermined trigger condition is satisfied is shown as the same number in FIG. 2B to FIG. 2C , the predetermined trigger condition used in the judgment before performing the RRM measurement relaxation evaluation and before sending the report to the base station may be the same or may be different. For example, as shown in FIG. 2B , in the case where the process of 20A is performed before performing RRM measurement relaxation evaluation and before sending a report to the base station, different predetermined trigger conditions may be adopted.

Example 2

This embodiment includes

steps

301, 303 and 305.

Optionally, in step 301, the UE performs an assessment of leaving the static state and/or leaving the non-cell edge. And in step 303, it is judged whether the evaluation criteria for leaving static and/or whether the criteria for leaving the non-cell edge are satisfied.

Among them, the conditions for leaving the static state and/or leaving the non-cell edge are as follows:

1) Does not meet the stationary evaluation criterion and/or the non-cell edge criterion;

2) Satisfy the leaving-stationary evaluation criterion and/or the non-cell-edge criterion.

When performing RRM relaxation evaluation, for the RRM measurement relaxation evaluation criterion that needs to send a report to the base station if the criterion is satisfied, the condition of the RRM measurement relaxation assessment criterion can be made stricter than the condition of the criterion that does not need to be reported. In the following, static evaluation and non-cell edge evaluation are taken as examples to illustrate this.

The quiescent assessment may include leaving a quiescent state assessment for assessing whether the UE leaves the quiescent state and entering a quiescent state assessment for assessing whether the UE enters a quiescent state from a non-quiescent state, and the corresponding leaving quiescent state assessment criteria may be the same as entering a quiescent state assessment The criteria are the same, or can also be stricter than the criteria for entering the quiescent state evaluation criteria. When the conditions for leaving the quiescent state evaluation criteria are stricter, it is possible to prevent false positives from sending reports when they are not needed. Wherein, the so-called "strict" means that the condition for leaving the static state evaluation criterion is higher than the condition for entering the static state evaluation criterion. For example, in the case of both using the threshold value, the threshold value of the evaluation criterion for leaving the static state may be higher than the evaluation criterion for entering the static state. For another example, in the case that only one of the RSRP threshold and the RSRQ threshold is used in the evaluation criterion for entering the quiescent state, both the RSRP threshold and the RSRQ threshold may be used for the evaluation criterion for leaving the quiescent state. That is, the evaluation criteria for leaving the static state may add other conditions on the basis of the static state evaluation criteria.

Fig. 4 is a schematic diagram for explaining non-cell edge (ie cell center) and cell edge. Referring to FIG. 4 , the non-cell-edge assessment may include entering non-cell-edge assessment for assessing whether the UE leaves the cell edge of the current special cell and entering the cell center and leaving non-cell-edge assessment for assessing whether the UE enters the cell edge from the cell center Evaluation, the corresponding condition for leaving the non-cell-edge evaluation criterion is the same as or stricter than the condition for entering the non-cell-edge assessment criterion. When the condition of the evaluation criterion for leaving the cell edge is stricter, it can prevent misjudgment from sending a report when it is not needed. Wherein, the so-called "strict" means that the conditions for leaving the cell edge evaluation criteria are higher than the conditions for entering the cell edge evaluation criteria. For example, in the case of both using the threshold value, the threshold value of the evaluation criterion for leaving the cell edge may be higher than the evaluation criterion for entering the cell edge. For another example, in the case that only one of the RSRP threshold value and the RSRQ threshold value is used as the evaluation criterion for entering the cell edge, both the RSRP threshold value and the RSRQ threshold value may be used for the evaluation criterion for leaving the cell edge. That is, the evaluation criterion for leaving the cell edge may add other conditions on the basis of the evaluation criterion for the cell edge.

Wherein, leaving the quiescent evaluation criterion, different RSRP and/or RSRQ threshold values from the quiescent assessment criterion in Embodiment 1 may be used. Apart from the non-cell-edge evaluation criteria, different RSRP and/or RSRQ threshold values from the non-cell-edge evaluation criteria in Embodiment 1 may be used.

Optionally, if the UE is in one of the scenarios in which the UE performs the evaluation of entering the static state in step 20A in Embodiment 1, the evaluation of leaving the static state is performed. However, it is not required that the UE performs the evaluation for leaving the static state and the evaluation for entering the static state in the same scenario.

Optionally, if the UE is in one of the scenarios in which the UE performs the non-cell-edge assessment in step 20A in Embodiment 1, the non-cell-edge assessment is performed. However, it is not required that the UE performs the assessment of leaving the non-cell edge and the assessment of entering the non-cell edge in the same scenario.

Optionally, in step 305, when the UE leaves the stationary state and/or leaves a non-cell edge (ie, enters a cell edge, or leaves a cell center), it reports to the base station.

Optionally, if the UE is in one of the scenarios in which the UE performs the evaluation of entering the static state in step 20A of Embodiment 1, and the UE meets the leaving condition, report leaving the static state to the base station. However, it is not required that the reporting of leaving the quiescent state, the assessment of entering the quiescent state, and the reporting of entering the quiescent state are performed in the same scenario.

Optionally, if the UE is in one of the scenarios in which the UE enters the non-cell edge in step 20A of Embodiment 1, and the UE meets the conditions for leaving the non-cell edge, it reports leaving the non-cell edge to the base station. However, it is not required that the UE reports leaving the non-cell edge, evaluates entering the non-cell edge, and reports entering the non-cell edge in the same scenario.

Optionally, the scenario where the UE sends the report to the base station may also be that after judging that neither the stationary criterion nor the non-cell-edge criterion is satisfied, or the leaving stationary criterion and the leaving non-cell-edge criterion are satisfied, the report is sent to the base station.

Example 3

The UE reports that it satisfies the RRM measurement relaxation, or reports that it does not meet the RRM measurement relaxation, or reports that it enters the quiescent state and/or enters the non-cell edge, or reports that it leaves the quiescent state and/or leaves the non-cell edge, which can be reported through event-type measurement reports. Through this method, the existing measurement report framework can be reused, and the parameter configuration in the existing event-based measurement report can be reused to control the sending interval and maximum number of reports, and at the same time, more measurement result information can be carried to the base station, so that the base station This information determines whether to perform RRM measurement relaxation for the UE.

Define a new event-type measurement report for the stationary state and/or non-cell edge (optionally, in this case, the measurement report carries an indication to distinguish whether it is stationary or non-cell edge), or respectively for the stationary state and A new event-type measurement report is defined for each non-cell edge. Optionally, reportInterval in the measurement report configuration specifies the interval for reporting the measurement report, and reportAmount specifies the maximum number of times the measurement report is reported. The entry condition is to meet the stationary criterion and/or the non-cell-edge criterion, the exit condition is not to satisfy the stationary criterion and/or the non-cell-edge criterion, or the exit condition is to leave the stationary criterion and/or the non-cell-edge criterion.

Optionally, the measurement report may include, but is not limited to: measurement results (RSRP and/or RSRQ) of the serving cell, indication of whether s-MeasureConfig is satisfied, indication of entering the static state and/or non-cell edge, leaving the static state And/or non-cell edge indications, neighbor cell measurement results (RSRP and/or RSRQ).

Optionally, upon receiving the RRM measurement relaxation configuration or the RRM measurement relaxation instruction sent by the base station, the UE stops the periodic reporting timer of the measurement identifier, and clears the corresponding counter.

Fig. 5 is a brief structural block diagram of the user equipment UE involved in the present invention. As shown in FIG. 5 , the user equipment UE500 includes a processor 501 and a memory 502 . The processor 501 may include, for example, a microprocessor, a microcontroller, an embedded processor, and the like. The memory 502 may include, for example, a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a nonvolatile memory (such as a flash memory), or other memories. Memory 502 has program instructions stored thereon. When the instructions are executed by the processor 501, the above method described in detail in the present invention and executed by the user equipment may be executed.

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

A program for realizing the functions of the various embodiments of the present invention can be recorded on a computer-readable recording medium. The corresponding functions can be realized by causing a computer system to read programs recorded on the recording medium and execute the programs. The so-called "computer system" here may be a computer system embedded in the device, which may include an operating system or hardware (such as peripheral devices). The "computer-readable recording medium" may be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium in which a short-term dynamic storage program is stored, or any other recording medium readable by a computer.

Various features or functional modules of the devices used in the above-mentioned embodiments may be implemented or executed by circuits (for example, single-chip or multi-chip integrated circuits). Circuits designed to perform the functions described in this specification may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above. A general-purpose processor can be a microprocessor, or it can be any existing processor, controller, microcontroller, or state machine. The above-mentioned circuits may be digital circuits or analog circuits. Where advances in semiconductor technology have resulted in new integrated circuit technologies that replace existing integrated circuits, one or more embodiments of the invention may also be implemented using these new integrated circuit technologies.

In addition, 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 equipment installed indoors or outdoors can be used as terminal equipment or communication equipment, such as AV equipment, kitchen equipment, cleaning equipment, air conditioners, office equipment, vending machines, and other household appliances.

As above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific structure is not limited to the above-mentioned embodiments, and the present invention also includes any design changes that do not depart from the gist of the present invention. In addition, various changes can be made to the present invention within the scope of the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included in the technical scope of the present invention. In addition, components having the same effect described in the above embodiments can be substituted for each other.

Claims

A method for performing RRM measurement relaxation, performed by a user equipment, comprising:

Performing corresponding RRM measurement relaxation evaluation based on the RRM measurement relaxation evaluation configuration received from the base station;

When the evaluation result satisfies the RRM measurement relaxation condition, report the RRM measurement relaxation evaluation result to the base station; and

receiving an RRM measurement relaxation indication from the base station, the RRM measurement relaxation indication being used for the user equipment to perform RRM measurement relaxation,

Wherein, the method also includes:

Before performing at least one of performing the RRM measurement relaxation evaluation and reporting the RRM measurement relaxation evaluation result to the base station, determining whether a predetermined trigger condition is satisfied;

and accordingly:

performing said RRM measurement relaxation assessment when said predetermined trigger condition is met; and/or

When the predetermined trigger condition is met, report the evaluation result to the base station.
The method according to claim 1, wherein the predetermined trigger condition is associated with the RRM measurement relaxation evaluation configuration and the measurement result of the current special cell where the user equipment is located.
The method according to claim 1 or 2, wherein, when the RRM measurement relaxation evaluation configuration includes a stationary evaluation configuration, performing the corresponding RRM measurement relaxation evaluation includes:

For the corresponding static evaluation,

The predetermined trigger condition includes obtaining the measurement result of the current special cell of the user equipment and any of the following:

The RRM measurement relaxation evaluation configuration does not include at least one of non-cell edge evaluation configuration and s-MeasureConfig evaluation configuration;

The RRM measurement relaxation evaluation configuration includes at least one of the non-cell-edge evaluation configuration and the s-MeasureConfig evaluation configuration, and correspondingly the measurement result is not greater than the value configured in the RRM measurement relaxation evaluation configuration The measurement result threshold included in one or both of the non-cell edge evaluation configuration and the s-MeasureConfig evaluation configuration.
The method according to claim 1 or 2, wherein when the RRM measurement relaxation evaluation configuration includes non-cell edge evaluation configuration, performing corresponding RRM measurement relaxation evaluation includes:

Carry out the corresponding non-cell edge assessment,

The predetermined trigger condition includes obtaining the measurement result of the current special cell of the user equipment and any of the following:

The RRM measurement relaxation evaluation configuration does not include at least one of a static evaluation configuration and an s-MeasureConfig evaluation configuration;

The RRM measurement relaxation assessment configuration includes the quiescence assessment configuration, and the result of the quiescence assessment corresponding to the quiescence assessment configuration is that the quiescence criterion is not satisfied;

The RRM measurement relaxation evaluation configuration includes the s-MeasureConfig evaluation configuration, and the measurement result is not greater than the measurement result threshold included in the s-MeasureConfig evaluation configuration;

The RRM measurement relaxation evaluation configuration includes the non-cell edge evaluation configuration and the s-MeasureConfig evaluation configuration, and the result of the static evaluation corresponding to the static evaluation configuration is that the static criterion is not satisfied, and the measurement result is not greater than the specified The measurement result thresholds included in the s-MeasureConfig evaluation configuration.
The method according to claim 4, wherein the static evaluation configuration configured in the RRM measurement relaxation evaluation configuration includes a change threshold value and a duration threshold value of the measurement result of the current special cell, The static criterion includes the following conditions:

The duration during which the change value of the measurement result of the special cell is less than the change threshold is not lower than the duration threshold.
The method according to claim 1 or 2, wherein the method further comprises:

within a predetermined period of time after reporting the evaluation result to the base station, no longer report the RRM measurement relaxation evaluation result to the base station; and/or

Reporting the RRM measurement relaxation evaluation result to the base station when the number of times the evaluation result is reported to the base station is less than a maximum number of reports and the RRM measurement relaxation evaluation result satisfies an RRM measurement relaxation criterion.
The method according to claim 1 or 2, wherein the method further comprises:

When receiving the RRM measurement relaxation indication from the base station, if the RRM measurement relaxation evaluation configuration does not include the s-MeasureConfig evaluation configuration, or the RRM measurement relaxation evaluation configuration includes the s-MeasureConfig evaluation configuration and the If the measurement result of the current special cell where the user equipment is located is not greater than the measurement result threshold included in the s-MeasureConfig evaluation configuration, perform RRM measurement relaxation according to the RRM measurement relaxation instruction.
The method according to claim 1 or 2, wherein the quiescent assessment comprises an exit quiescent state assessment for assessing whether the user equipment has left a quiescent state and a method for assessing whether the user equipment has entered a quiescent state from a non-quiescent state. The static state assessment of the state, the corresponding evaluation criteria for leaving the static state is the same as the evaluation criteria for entering the static state or stricter than the conditions for the assessment criteria for entering the static state; and/or

The non-cell edge evaluation includes an entry non-cell edge evaluation for evaluating whether the user equipment leaves the cell edge of the current special cell and enters the cell center and an entry non-cell edge evaluation for evaluating whether the user equipment enters the cell center from the cell center. For cell edge leaving non-cell edge evaluation, the corresponding condition of leaving non-cell edge evaluation criterion is the same as the condition of entering non-cell edge assessment criterion or stricter than the condition of non-cell edge assessment criterion.
The method according to claim 1 or 2, wherein the user equipment reports messages to the base station through event-type measurement reports.
A user equipment, comprising:

processor; and

memory, storing instructions,

wherein the instructions, when executed by the processor, perform the method of any one of claims 1-9.