WO2023046062A1 - Method executed by user equipment, and user equipment - Google Patents

Abstract

The present disclosure provides a method executed by a user equipment, and the user equipment. The method is executed by the user equipment (UE) to relax radio resource management (RRM) measurement, and comprises the following steps: the UE receives an RRM measurement relax criterion configuration sent by a base station; the UE evaluates the RRM measurement relax criterion, and if the UE determines by means of the evaluation that the RRM measurement relax criterion is met, the UE sends a report to the base station; and the UE receives the RRM measurement relax configuration in a connection state sent by the base station or enables an RRM measurement relax indication.

Description

Method performed by user equipment 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 how the RedCap UE performs RRM measurement relaxation according to the network configuration in the RRC connection state, how to judge which RRM measurement relaxation method to adopt according to the level threshold, and how the source base station forwards the static state of the UE to the target base station, The UE can perform RRM measurement relaxation more accurately, which not only saves the power consumption of the UE but also does not affect the mobile performance of the UE.

Contents of the invention

In order to solve at least part of the above problems, the present invention provides a method executed by user equipment and the user equipment.

According to one aspect of the present invention, a method performed by a user equipment is provided, which is a method of relaxing radio resource management RRM measurement performed by a user equipment UE, including the following steps:

The UE receives the RRM measurement relaxation criterion configuration sent by the base station;

The UE evaluates the RRM measurement relaxation criterion, and if the UE is determined to meet the RRM measurement relaxation criterion after evaluation, then the UE sends a report to the base station;

The UE receives the RRM relaxation measurement configuration or RRM relaxation measurement indication in the connected state sent by the base station.

In the above method performed by the user equipment, preferably,

The above-mentioned RRM measurement relaxation criterion is configured as a static criterion.

In the above method performed by the user equipment, preferably,

The static criterion above includes RSRP and/or RSRQ change threshold and time threshold.

In the above method performed by the user equipment, preferably,

The above RRM relaxation measurement configuration or enable RRM relaxation measurement indication includes:

Intra-frequency RRM relaxation measurement indication or intra-frequency RRM relaxation measurement configuration;

Inter-frequency RRM relaxation measurement indication or configuration;

Different standard RRM relaxation measurement indication or configuration;

Inter-frequency/inter-standard RRM relaxation measurement indication or configuration; or,

A method for RRM relaxation measurement.

In the above method performed by the user equipment, preferably, the following steps are further included:

The UE receives the measurement threshold information of the cell in the RRC connected state sent by the base station.

In the above method performed by the user equipment, preferably,

The above measurement threshold information includes:

Same-frequency RSRP threshold, same-frequency RSRQ threshold;

Inter-frequency RSRP threshold, inter-frequency RSRQ threshold;

Different standard RSRP threshold, different standard RSRQ threshold; or,

Different frequency/different system RSRP threshold, different frequency/different system RSRQ threshold.

In the above method performed by the user equipment, preferably,

When the UE receives the configuration of RRM measurement relaxation in the connected state of the base station or the indication of enabling RRM measurement relaxation, the UE compares the quality of the cell with the measurement threshold information of the cell in the connected state, and judges whether the cell is in the same frequency, different frequency, or different mode. The case relaxation method was used for the RRM measurement respectively.

In the above method performed by the user equipment, preferably,

The foregoing RRM measurement relaxation method includes: not performing adjacent cell measurement, or not performing adjacent cell measurement for a period of time, or lengthening the adjacent cell measurement interval by a scaling factor.

In the above method performed by the user equipment, preferably, the following steps are further included:

When the base station initiates handover to the UE, the source base station sends a first message to the target base station, and the first message carries a static state indication of the UE;

After receiving the first message, the target base station determines whether to allow the UE to enable RRM measurement relaxation according to the static state indication of the UE, and if the RRM measurement relaxation is enabled, then send it to the source base station through the second message;

After receiving the second message, the source base station sends it to the UE through an RRC reconfiguration message;

The UE receives the RRC reconfiguration message with synchronous reconfiguration, and performs corresponding operations.

According to another aspect of the present invention, a user equipment is provided, including:

processor; and

memory, storing instructions,

Said instructions, when executed by said processor, cause said user equipment to perform the method according to the above description.

According to the above solution, in the RRC connection state, RedCap UE can perform RRM measurement relaxation according to the network configuration, and can determine which RRM measurement relaxation method to adopt according to the level threshold, and the source base station can forward the static state of the UE to the target base station , so that the UE can more accurately perform RRM measurement relaxation, which not only saves power consumption of the UE but also does not affect the mobility performance of the UE.

Description of drawings

FIG. 1 is a schematic diagram of a conventional NR measurement model.

Fig. 2 is a schematic diagram illustrating a method executed by a user equipment according to an embodiment of the present invention.

Fig. 3 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 reduced

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 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.

In the present invention, "enabling", "using", "applying", "executing" and the like may be used interchangeably.

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

The measurement model of NR is shown in Figure 1, where:

-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 including 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 a measurement report including 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, the UE may not Perform neighbor cell measurements. 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 the RRC connected state, the base station can send measurement configurations to the UE, including measurement object configurations, measurement report configurations, measurement identification configurations, quality configurations, measurement interval (gap) configurations, and the like. 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 met. 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. 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 or may not perform neighbor cell measurement for a long period of time; if the UE evaluation result only meets low-speed mobile or not at the edge of the cell, the UE can use a longer time interval to measure neighboring cells. If the base station is only configured with low-speed evaluation, and the UE evaluates that it is moving at a low speed, the UE can use a longer time interval to measure neighboring cells. If the base station only configures the non-cell edge evaluation, the UE evaluates that it is not at the cell edge, and the UE can use a longer time interval to measure neighboring cells.

For the RRC connected state, the base station may configure the static evaluation criterion and/or the non-cell edge evaluation criterion for RRM measurement relaxation for the UE. When the UE judges that it satisfies the evaluation criterion of RRM measurement relaxation, it reports the information to the base station explicitly or implicitly through the UE assistance information or the measurement report. After receiving the information, the base station may instruct the UE to enable RRM measurement relaxation.

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

Through the present invention, the UE can adopt an appropriate RRM measurement relaxation method when satisfying the RRM side relaxation criterion according to different configuration conditions of the base station, so as to achieve 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

Fig. 2 is a schematic diagram illustrating a method executed by a user equipment according to an embodiment of the present invention.

Next, the method performed by the user equipment involved in Embodiment 1 of the present invention will be described in detail in combination with the basic process shown in FIG. 2 .

This embodiment includes step 1, step 2 and step 3.

Optionally, in Step 1 (step S201 shown in FIG. 2 ), the UE receives the RRM measurement relaxation criterion configuration (for example, static criterion) sent by the base station.

Wherein, the base station sends the RRM measurement relaxation criterion 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).

The static criterion may include information such as RSRP and/or RSRQ change threshold, time threshold, and the like. Optionally, different static criteria may be configured for intra-frequency, inter-frequency, and inter-RAT (inter-RAT).

Optionally, in step 2 (step S202 shown in FIG. 2 ), the UE evaluates the RRM measurement relaxation criterion. 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. If the UE determines through evaluation that it meets the RRM measurement relaxation criterion (that is, meets the static criterion), the UE sends a report to the base station. Optionally, the report can be sent to the base station through a UEAssistanceInformation message or a measurement report message.

Optionally, in step 3 (step S203 shown in FIG. 2 ), the UE receives the RRM relaxation measurement configuration or RRM relaxation measurement indication in the connected state sent by the base station, and the indication or configuration may include one or more of the following information Various:

1) Same-frequency RRM relaxation measurement indication or same-frequency RRM relaxation measurement configuration;

2) Inter-frequency RRM relaxation measurement indication or configuration;

3) Indication or configuration of different RRM relaxation measurements;

4) Inter-frequency/inter-standard RRM relaxation measurement indication or configuration, which differs from 2) and 3) in that one indication or the same configuration is used to simultaneously indicate or configure inter-frequency and inter-system;

5) The method of RRM relaxation measurement, for example: relaxation measurement scale factor (scaler factor), time not to perform adjacent cell measurement, relaxation measurement method type value, relaxation measurement method type index, etc.; optionally, same frequency, different frequency, Different standards can use different RRM transmission measurement methods. At this time, the method of RRM relaxation measurement can be indicated or configured separately for the same frequency, different frequency, and different standards.

RRM measurement relaxation methods may include, but are not limited to: no adjacent cell measurement, or no adjacent cell measurement for a long period of time (for example, several hours) (the same frequency, different frequency, and different standards may correspond to different durations), Or the measurement interval of adjacent cells may be lengthened by a scaling factor (same frequency, different frequency, and different standards may correspond to different scaling factors).

Optionally, the RRM relaxation measurement configuration or RRM relaxation measurement indication may be sent by the base station to the UE through RRC dedicated signaling or MAC CE. According to the instruction or configuration of the base station, the UE starts to use the corresponding RRM measurement relaxation method to perform RRM measurement relaxation.

Example 2

The UE receives the measurement threshold information of the cell in the RRC connected state sent by the base station. The measurement threshold information includes one or more of the following:

1) same-frequency RSRP threshold, same-frequency RSRQ threshold;

2) Inter-frequency RSRP threshold, inter-frequency RSRQ threshold;

3) Different standard RSRP threshold, different standard RSRQ threshold;

4) Different frequency/different system RSRP threshold, different frequency/different system RSRQ threshold.

Optionally, the measurement threshold information may be sent to the UE through a system message or RRC dedicated signaling (such as an RRC reconfiguration message).

When the UE receives the configuration of relaxing the RRM measurement in the connected state of the base station or the instruction to enable the relaxing of the RRM measurement in the connected state, the UE compares the quality of the cell with the measurement threshold information of the cell in the above connected state, and judges that the same frequency, In the case of different frequencies and different systems, which RRM measurement relaxation methods are used respectively.

RRM measurement relaxation methods may include, but are not limited to: no adjacent cell measurement, or no adjacent cell measurement for a long period of time (for example, several hours) (the same frequency, different frequency, and different standards may correspond to different durations), Or the measurement interval of adjacent cells may be lengthened by a scaling factor (same frequency, different frequency, and different standards may correspond to different scaling factors).

An example of a possible implementation is as follows:

1) After the UE receives the configuration or instruction of the base station to enable the relaxation of RRM measurement in the connected state, or the configuration or instruction of the base station to enable the relaxation of the same-frequency RRM measurement in the connected state, if the RSRP of the current cell is greater than the same-frequency RSRP threshold and the UE If the RSRQ of the cell is greater than the same-frequency RSRQ threshold, the UE will not measure neighboring cells; if the RSRP of this cell is less than or equal to the same-frequency RSRP threshold and the RSRQ of this cell is less than or equal to the same-frequency RSRQ threshold, the UE will not measure neighboring cells for a period of time;

2) After the UE receives the configuration or instruction of the base station to enable the relaxation of RRM measurement in the connected state, or the configuration or instruction of the base station to enable the relaxation of inter-frequency/inter-standard RRM measurement in the connected state, if the RSRP of the current cell is greater than the same-frequency RSRP threshold and the RSRQ of this cell is greater than the same-frequency RSRQ threshold, the UE will not measure neighboring cells for a period of time; Long neighbor measurement interval.

Example 3

This embodiment includes step 1, step 2, step 3 and step 4.

Optionally, in step 1, when the base station initiates handover to the UE, the source base station sends a HandoverPreparationInformation message (the first message) to the target base station. Optionally, the message carries the static state indication of the UE. For example, when the UE is in a static state, the indicating bit is 1, otherwise it is set to 0; or when the UE is in a static state, the indicating bit is carried, otherwise, the indicating bit is not carried. Optionally, the quiescent state indication indicates that the UE satisfies a quiescent criterion. Optionally, if the message carries an indication of whether the UE is a RedCap UE, the static state indication will be set only when the RedCap UE indicates that the UE is a RedCap UE.

Optionally, in step 2, after receiving the HandoverPreparationInformation message, the target base station may determine whether to allow the UE to enable RRM measurement relaxation according to the static state indication of the UE. If RRM measurement relaxation is enabled, it can be sent to the source base station through a HandoverCommand message (the second message).

Optionally, in step 3, after receiving the HandoverCommand message (the second message), the source base station sends it to the UE through an RRC reconfiguration (RRCReconfiguration) message.

Optionally, in step 4, the UE receives an RRC reconfiguration message with synchronous reconfiguration (ReconfigurationWithSync), and performs one of the following operations:

1) According to the enabling RRM measurement relaxation configuration or indication in the RRC reconfiguration message, perform RRM measurement relaxation; or according to the enabling RRM measurement relaxation configuration or indication in the RRC reconfiguration message (that is, not enabling, or disabling) , does not perform RRM measurement relaxation.

2) If the UE is using the RRM relaxation measurement, it immediately stops the RRM relaxation measurement and uses the normal RRM measurement method instead.

Fig. 3 is a brief structural block diagram of the user equipment UE involved in the present invention. As shown in FIG. 3 , the user equipment UE300 includes a processor 301 and a memory 302 . The processor 301 may include, for example, a microprocessor, a microcontroller, an embedded processor, and the like. The memory 302 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 memories. Memory 302 has program instructions stored thereon. When the instructions are executed by the processor 301, 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), nonvolatile 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 embodiments, and the present invention also includes any design changes that do not deviate 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 (10)

A method performed by a user equipment is a method of relaxing radio resource management RRM measurement performed by a user equipment UE, including the following steps: The UE receives the RRM measurement relaxation criterion configuration sent by the base station; The UE evaluates the RRM measurement relaxation criterion, and if the UE is determined to meet the RRM measurement relaxation criterion after evaluation, then the UE sends a report to the base station; The UE receives the RRM relaxation measurement configuration or RRM relaxation measurement indication in the connected state sent by the base station. The method performed by user equipment according to claim 1, wherein, The above-mentioned RRM measurement relaxation criterion is configured as a stationary criterion. The method performed by the user equipment according to claim 2, wherein, The static criterion above includes RSRP and/or RSRQ change threshold and time threshold. The method performed by the user equipment according to any one of claims 1 to 3, wherein, The above RRM relaxation measurement configuration or enable RRM relaxation measurement indication includes: Intra-frequency RRM relaxation measurement indication or intra-frequency RRM relaxation measurement configuration; Inter-frequency RRM relaxation measurement indication or configuration; Different standard RRM relaxation measurement indication or configuration; Inter-frequency/inter-standard RRM relaxation measurement indication or configuration; or, A method for RRM relaxation measurement. The method performed by the user equipment according to any one of claims 1 to 3, further comprising the following steps: The UE receives the measurement threshold information of the cell in the RRC connected state sent by the base station. The method performed by the user equipment according to claim 5, wherein, The above measurement threshold information includes: Same-frequency RSRP threshold, same-frequency RSRQ threshold; Inter-frequency RSRP threshold, inter-frequency RSRQ threshold; Different standard RSRP threshold, different standard RSRQ threshold; or, Different frequency/different system RSRP threshold, different frequency/different system RSRQ threshold. The method performed by the user equipment according to claim 6, wherein, When the UE receives the configuration of RRM measurement relaxation in the connected state of the base station or the indication of enabling RRM measurement relaxation, the UE compares the quality of the cell with the measurement threshold information of the cell in the connected state, and judges whether the cell is in the same frequency, different frequency, or different mode. The case relaxation method was used for the RRM measurement respectively. The method performed by the user equipment according to claim 7, wherein, The foregoing RRM measurement relaxation method includes: not performing adjacent cell measurement, or not performing adjacent cell measurement for a period of time, or lengthening the adjacent cell measurement interval by a scaling factor. The method performed by the user equipment according to any one of claims 1 to 3, further comprising the following steps: When the base station initiates handover to the UE, the source base station sends a first message to the target base station, and the first message carries a static state indication of the UE; After receiving the first message, the target base station determines whether to allow the UE to enable RRM measurement relaxation according to the static state indication of the UE, and if the RRM measurement relaxation is enabled, then send it to the source base station through the second message; After receiving the second message, the source base station sends it to the UE through an RRC reconfiguration message; The UE receives the RRC reconfiguration message with synchronous reconfiguration, and performs corresponding operations. A user equipment, comprising: processor; and memory, storing instructions, The instructions, when executed by the processor, cause the user equipment to execute the method according to any one of claims 1-9.

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