CN116801428A - Measurement relaxation assessment method performed by user equipment and user equipment - Google Patents

Abstract

The invention provides a measurement relaxation assessment method performed by user equipment and the user equipment. The measurement relaxation assessment method comprises the following steps: performing a given type of measurement on a cell in which the user equipment is located, and obtaining a current measurement value; and evaluating whether a measurement relaxation criterion corresponding to the measurement relaxation is fulfilled based on a reference measurement value for the measurement relaxation corresponding to the given type of measurement, the current measurement value and a given threshold value, wherein if a measurement configuration of the cell is changed while the current measurement value is obtained, the reference measurement value for the measurement relaxation is updated to the current measurement value, and the evaluation of whether the measurement relaxation criterion is fulfilled is performed based on the updated reference measurement value.

Description

Measurement relaxation evaluation method performed by user equipment and user equipment

Technical field

The present invention relates to the field of wireless communication technology, and more specifically, the present invention relates to a measurement relaxation evaluation method performed 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 many types 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 have requirements in between. This part of the equipment can be considered as some reduced capability NR equipment (RedCap UE). Secondly, 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 monitors, etc., also have the characteristics of NR devices with reduced capabilities. For this type of NR equipment with reduced capabilities, the original standards cannot well support it to achieve optimal performance requirements.

Based on the above reasons, in March 2021, at the 3rd Generation Partnership Project (3GPP) RAN#91e plenary meeting, a work item for version 17 reduced-capability NR equipment (see non-patent document: RP-210918 Revised WID on support of reduced capability NRdevices) was approved. The 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 consumption savings and battery life enhancement of reduced-capability NR devices, including reduced monitoring of the downlink control channel (PDCCH), eDRX (extended inactive DRX) in RRC inactive or idle states. continuous reception), and Radio Resource Management (RRM) measurement relaxation. RRM measurement relaxation for NR equipment with reduced capabilities mainly includes relaxation of neighboring cell measurements. 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 criteria for the RedCap UE. When the situation that the RedCap UE meets the RRM relaxation criteria changes, it will be reported to the network. The network will control whether and how to perform RRM measurement relaxation.

At the same time, in December 2019, at the 3rd Generation Partnership Project (3GPP) RAN#86 plenary meeting, a work item on power consumption enhancement for version 17 was announced (see non-patent document: RP-193239New WID: UE Power Saving Enhancements) and approved. The latest version of this work item is found in non-patent literature: RP-200938 Revised WID_UE Power Saving Enhancements for NR_Change. This work project mainly studies how terminals save power in RRC idle state and RRC inactive state. One of the goals of this work project is to study and evaluate wireless link monitoring of relaxed terminals and beam failure detection of relaxed terminals in low mobility scenarios. Wireless link monitoring and beam failure detection are both performed in the RRC connected state. For low-mobility terminals, wireless link quality is generally relatively stable. In this case, after judging certain criteria, the terminal can relax wireless link monitoring, such as reducing the number of sampling times, lengthening the monitoring period, etc. Similarly, after certain criteria are judged, beam failure detection can also be relaxed to achieve the purpose of saving power consumption. Criteria used for judgment include low-speed movement criteria and good cell criteria, both of which are optionally configured by the network for the terminal.

Since RedCap UE needs to save power consumption, the research results in the work item on power saving enhancement in Release 17 as mentioned above also apply to RedCap UE.

This invention discusses how, in the RRC connected state, the UE evaluates the RRM relaxation criteria and reports the situation that satisfies the RRM relaxation criteria to the network, and how to evaluate the RLM/BFD relaxation criteria and reports the situation that satisfies the RLM/BFD relaxation criteria to the network.

Contents of the invention

The object of the present invention is to provide a method that can accurately perform measurement relaxation assessment and user equipment applying the method.

According to an aspect of the present invention, a measurement relaxation evaluation method performed by user equipment is provided, including: performing a given type of measurement on a cell in which the user equipment is located to obtain a current measurement value; and based on the given The reference measurement value of the measurement relaxation corresponding to a certain type of measurement, the current measurement value and a given threshold are evaluated to determine whether the measurement relaxation criterion corresponding to the measurement relaxation is met, wherein if the measurement relaxation criterion is met when the current measurement value is obtained, If the measurement configuration of the cell changes, the reference measurement value for the measurement relaxation is updated to the current measurement value, and the evaluation of whether the measurement relaxation criterion is met is performed based on the updated reference measurement value.

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

According to the solution of the present invention, it can be accurately evaluated whether the relaxation measurement criterion is met, so that the user equipment can correctly perform or not perform measurement relaxation. On the other hand, the present invention can also correctly report to the base station the status that satisfies or does not satisfy the relaxed measurement criteria, and saves power consumption.

Description of the drawings

FIG. 1 is a schematic diagram explaining the measurement model of NR.

Figure 2 is a flowchart of a measurement relaxation assessment method according to an embodiment of the present invention.

Figure 3 is a flow chart of a measurement relaxation assessment method according to a specific embodiment of the present invention.

Figure 4 is a flow chart of a measurement relaxation assessment method according to another specific embodiment of the present invention.

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

Detailed ways

The present invention will be described in detail below with reference to 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 simplicity, detailed descriptions of well-known technologies that are not directly related to the present invention are omitted to prevent confusion in the understanding of the present invention.

Some terms involved in the present invention are described below. The specific meanings of the terms can be found in the latest 3GPP standard specifications.

gNB: the next generation NodeB next generation base station, the base station of 5G network

NodeB: base station

RedCap:Reduced capability, UE with reduced capability

UE: User Equipment user equipment

NR: New Radio, a new generation of 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

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

CD-SSB:Cell Defining SSB cell definition SSB

NCD-SSB: non-cell-defining SSB non-cell-defining SSB

BWP: Bandwidth Part partial bandwidth, bandwidth fragment

DCI: Downlink control information

RSRP: Reference Signal Received Power reference signal received power

RSRQ: Reference Signal Received Quality reference signal received quality

SpCell:Special Cell

PCell: Primary Cell

PSCell: Primary SCG Cell SCG primary cell

SCell: Secondary Cell

CSI: Channel-state information, channel state information

CSI-RS: CSI reference signal, channel status information reference signal

RLM: Radio Link Monitoring, wireless link monitoring

BFD: Beam Failure Detection, beam failure detection

RLF: Radio Link Failure, wireless link failure

In the present invention, network, base station, gNB 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 a 3GPP follow-up network. Additional networks defined in evolved releases.

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

In the present invention, "enable", "use", "apply", "perform", "start", etc. can be used interchangeably. In the present invention, "enable", "stop", etc. can be used interchangeably. "RLM/BFD" may also refer to RLM and/or BFD, only RLM, or only BFD.

Below, a description will be given of the technology related to the present invention.

Connected RRM measurement

The measurement model of NR is shown in Figure 1. The meaning of each label in Figure 1 is as follows.

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

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

-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 (that is, reported from L1 to L3).

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

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

-Layer 3 cell quality filtering: Filter the cell measurement results based on filtering parameters, etc.

-C: Measurement results as input for evaluation of reporting criteria.

-Evaluate reporting criteria: Evaluate whether measurement report reporting needs to be triggered based on the configuration parameters of the measurement report. This evaluation can be based on a comparison of different measurements, for example C and ^C1 in the above figure represent different measurements.

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

-Layer 3 beam filtering: Layer 3 (L3) filtering of the measurement results of a single beam.

-E: Measurement of a single beam after filtering operation.

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

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

In the RRC connected state, the base station can send measurement configuration to the 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 measurement reports that are triggered, including periodic measurement reports and event measurement reports. For event measurement reports, the base station configures the triggering criteria for the measurement report, which are various RSRP/RSRQ and time thresholds. When the criteria are met, the UE can send the measurement report to the base station. After sending an event-triggered measurement report, the UE will periodically report the measurement report of the event to the base station before receiving a response from the base station. For the serving cell, connected state RRM measurement can be configured to be based on SSB measurement, where the measured SSB is CD-SSB. For the serving cell, connected state RRM measurement can also be configured to be based on CSI-RS measurement. Serving cells include PCell, PSCell and SCell.

In Release 17, for the RRC connected state, the base station can configure the relaxation criterion for the connected state RRM measurement for the UE. After the UE performs RRM measurement on the PCell, it determines whether the measurement value satisfies the criterion. If the status of meeting the criterion changes, that is, from not satisfying the criterion to satisfying the criterion or from satisfying the criterion to not satisfying the criterion, the UE can send UE assistance information. (UEAssistanceInformation) message is reported to the base station, which carries indication information indicating whether the UE meets the connected state RRM measurement relaxation criteria. After receiving the information, the base station can instruct the UE through signaling to start or stop connected state RRM measurement relaxation, or adjust related parameters of connected state RRM relaxation according to the instruction information.

The connected state RRM measurement relaxation criterion may include a quiescence criterion, that is, the current measurement value through the PCell is compared with a reference measurement value. If the reference measurement value minus the current measurement value is less than a threshold value, the UE meets the RRM measurement relaxation criterion. If the current measurement value is greater than the reference measurement value, or the RRM measurement relaxation criterion has not been satisfied for a period of time, the reference measurement value is set to the current measurement value. If the UE is configured to report the RRM measurement relaxation criterion satisfaction indication to the base station, the UE can perform the following judgments and operations:

1>If the RRM measurement relaxation criterion is met for a period of time:

2> If the UE has not sent an indication indicating that the relaxation criteria are met to the base station since being configured by the base station to report the RRM measurement relaxation criterion satisfaction indication to the base station, or the last indication sent to the base station indicated that the relaxation criteria were not satisfied, the UE sends the UEAssistanceInformation message To the base station, carry indication information indicating that the UE meets the relaxation criteria;

1>Otherwise,

2> If the last indication sent to the base station indicates that the relaxation criterion is met, then a UEAssistanceInformation message is sent to the base station, carrying indication information indicating that the UE does not meet the relaxation criterion.

Meanwhile, in version 17, NCD-SSB is introduced. The RRC connected UE performs RRM measurements on the serving cell based on CD-SSB or NCD-SSB according to network configuration or instructions. For example, the currently activated downlink BWP of the UE contains CD-SSB. When the UE's activated downlink BWP is switched, it is possible that the newly activated downlink BWP does not contain CD-SSB but contains NCD-SSB. In this case, the UE may switch from CD-based BWP to CD-SSB. - SSB measures the serving cell instead of measuring the serving cell based on NCD-SSB.

RLM/BFD

RLM refers to the situation where the UE monitors the downlink wireless link quality based on the reference signal configured by the network, in order to detect the downlink wireless link quality of SpCell (i.e. PCell, PSCell) or the serving cell. The configured reference signal used for the RLM process may be SSB and/or CSI-RS. The UE performs the RLM procedure on the activated downlink BWP.

BFD is where the UE detects beams based on reference signals configured by the network in order to detect beam failure. The BFD process can be targeted at each Serving Cell, including SpCell and SCell. The configured reference signal used for the BFD process may be SSB and/or CSI-RS. The UE performs the BFD procedure on the activated downlink BWP.

For low-mobility terminals, wireless link quality is generally relatively stable. In this case, after judging certain criteria, the terminal can relax RLM/BFD, such as reducing the number of samplings, lengthening the monitoring and evaluation cycle, lengthening the reporting instruction cycle, etc. In the RRC connected state, RLM/BFD relaxation can be that the base station configures relaxation criterion configuration parameters through system messages or RRC dedicated signaling. The relaxation criteria can include low mobility criteria (low mobility) and good serving cell quality criteria (goodserving cell quality). Configuration parameters may include criteria switches, criterion thresholds, decision time parameters, etc. The UE compares and evaluates the SpCell or serving cell measurement results with the threshold values in the RLM/BFD relaxation criteria to determine its own mobility and serving cell quality. If the relaxation criteria are met, the UE can adopt relaxed RLM/BFD .

Through the present invention, in the RRC connected state, the UE can accurately evaluate the RRM relaxation criterion and correctly report the situation that satisfies the RRM relaxation criterion to the network, and accurately evaluate the RLM/BFD relaxation criterion and correctly report the situation that satisfies the RLM/BFD relaxation criterion to the network. , thereby saving the power consumption of the UE without affecting the mobility performance of the UE.

Hereinafter, the outline of the present invention will be described first with reference to FIG. 2 . Figure 2 is a flowchart of a measurement relaxation assessment method according to an embodiment of the present invention.

As shown in Figure 2, at 201, a given type of measurement is performed on the cell where the user equipment is located, and the current measurement value is obtained. Measurements of a given type include, for example, RRM measurements, BFD measurements, RLM measurements, etc. The measurement relaxations mentioned below may correspond to a given type of measurement, for example an RRM measurement corresponds to an RRM measurement relaxation, a BFD measurement corresponds to a BFD measurement relaxation, an RLM measurement corresponds to an RLM measurement relaxation. The cell where the user equipment is located may be SpCell or Pcell, for example.

Then, if the current measurement value is obtained, in 203, it is determined whether the measurement configuration of the cell has changed when the current measurement value is obtained.

The user equipment may perform measurements based on SSB, in which case the measurement configuration may be an SSB measurement configuration, such as SSB frequency, SSB type, etc. SSB types include, for example, the aforementioned CD-SSB and NCD-SSB. At this time, it can be determined that the measurement configuration of the cell has changed when at least one of the following conditions is met: the type of SSB used to measure the cell has changed; the SSB on which the current measurement value is based The type of the SSB on which the current reference measurement value is based is different from the type of the SSB on which the current reference measurement value is based; the frequency of the SSB used to measure the cell has changed; the frequency of the SSB on which the current measurement value is based is different from the SSB on which the current reference measurement value is based. The frequency is different.

The so-called frequency or SSB type of SSB on which the current measurement value is based refers to the frequency or type of SSB used to obtain the current measurement value. The so-called SSB frequency on which the current reference measurement value is based refers to the SSB frequency or type used for measurement when the current reference measurement value is set, or if the current reference measurement value is updated, it can also refer to the past The frequency or type of SSB used when the actual measurement value (that is, the current measurement value at some time in the past) that is updated to the reference measurement value is obtained.

The user equipment may also perform measurements based on CSI-RS, in which case the measurement configuration is a CSI-RS configuration. The CSI-RS configuration may include at least one of subcarrier spacing, CP type, center frequency of CSI-RS, etc. At this time, it can be determined that the measurement configuration of the cell where the user equipment is located has changed when at least one of the following conditions is met: the configuration of the CSI-RS used for measuring the cell has changed; the current measurement The CSI-RS configuration on which the value is based is different from the CSI-RS configuration corresponding to the current reference measurement value. The so-called CSI-RS configuration has changed, that is, it can be a change in the value of one or more parameters in the CSI-RS configuration itself, or it can also refer to a change in the value range of one or more parameters in the CSI-RS configuration. Change.

If it is determined in 203 that the measurement configuration has changed, then in 205 the reference measurement value is updated to the obtained current measurement value. In addition, when the first predetermined time elapses after the measurement configuration is changed when the current measurement value is acquired, the reference measurement value for measurement relaxation may be updated to the current measurement value. This avoids frequent changes in the reference measurement values due to frequent changes in the measurement configuration, thus ensuring the stability of the evaluation.

When updating the reference measurement value, the reference measurement value can be updated to the value obtained by adding the current measurement value and the given offset value. If a given type of measurement is performed based on SSB, the given offset value may be determined based on the frequency range of the SSB. If a given type of measurement is performed based on CSI-RS, the given offset value may be determined based on the value range of one or more parameters in the CSI-RS configuration. For example, an offset value table may be configured, where the offset value indicates that offset values with different values correspond to the frequency range of the SSB or the value range of one or more parameters of the CSI-RS. The given offset value may also be determined based on the difference between the frequency of the SSB on which the current measurement value is based and the frequency of the SSB on which the current reference measurement value is based. Similarly, the given offset value can also be determined based on the difference between the value of one or more parameters of the CSI-RS on which the current measurement value is based and the value of the corresponding parameter on which the current reference measurement value is based. .

Then at 209, based on the updated reference measurement value, the current measurement value and the given threshold, it is evaluated whether the measurement relaxation criterion is met, the measurement relaxation criterion corresponding to the measurement relaxation corresponding to the above-mentioned given type of measurement.

If the measurement configuration has not changed, then at 207, the reference measurement value is not updated, and then at 209, it is evaluated whether the measurement relaxation criterion is met based on the current reference measurement value.

After obtaining the evaluation result, the user equipment can decide whether to perform measurement relaxation based on the evaluation result, or whether to exit from the measurement relaxation being performed and perform normal measurement.

After obtaining the evaluation result, the user equipment may also determine whether it is necessary to report the measurement relaxation criterion satisfaction status to the base station. The measurement relaxation criterion satisfying state includes a state that satisfies the relaxation criterion and a state that does not satisfy the relaxation criterion. For example, if the user equipment is configured by the base station and needs to report to the base station, it may be determined that it needs to report to the base station. For another example, the user equipment can decide on its own to report to the base station according to a given period or under given conditions.

When it is determined that the measurement relaxation criterion satisfaction status needs to be reported to the base station, the user equipment may report the measurement relaxation criterion satisfaction status indication to the base station based on the evaluation result.

When the user equipment determines that the measurement relaxation criterion satisfaction status has changed according to the evaluation result, the user equipment may report the changed relaxation criterion satisfaction status to the base station, otherwise it may not report. This reduces the number of reports saved.

In addition, the user equipment can also report to the base station that the evaluation results obtained within the second given time indicate that the relaxed measurement criteria are met, and if the measurement configuration does not change within the second given time, the user equipment can report to the base station that the relaxed measurement criteria are met. instruct.

Furthermore, as another example, the user equipment may have changed the measurement configuration within the second given time period, and last reported to the base station a message indicating that the measurement relaxation criterion was met, a message indicating that the measurement relaxation criterion was not met was reported to the base station. message indicated. That is, if the measurement configuration has changed within the second given time period, and the last time it was reported to the base station, it was evaluated as meeting the measurement relaxation criterion, then in order to avoid improperly performing measurement relaxation and damaging the mobility of the user equipment, The user equipment may determine that it has become a state that does not meet the measurement relaxation criteria and report it to the base station. In this case, if the user device is performing measurement relaxation, it can exit measurement relaxation and return to normal measurement.

In addition, in one example, the user equipment may be configured to include a measurement parameter set for performing a given type of measurement (for example, it may be configured by the base station through MeasObjectNR described later), and the measurement parameter set is configured with the SSB-based measurement parameter set. When performing measurement-related configuration information, there is no CSI-RS-related configuration in the measurement parameter set.

Hereinafter, the present invention will be described in more detail with reference to specific examples.

Example 1

FIG. 3 is a flowchart of a measurement relaxation assessment method according to Embodiment 1 of the present invention.

This embodiment includes steps 301, 303, and 305. "PCell" mentioned in this embodiment can also be replaced by "SpCell", that is, the process described for PCell is also applicable to SpCell. In this embodiment, "RRM measurement relaxation" can be replaced by "RLM/BFD measurement relaxation", that is, the described process is also applicable to RLM/BFD measurement relaxation.

Optionally, in step 301, when the SSB configuration changes, the reference measurement value is updated to the current measurement value. Optionally, if the UE meets at least one of the following conditions, set the "reference measurement value" of the PCell in the RRM measurement relaxation criterion to the "current measurement value":

-The type of SSB of PCell used for measurement changes;

-The SSB type on which the current measurement value is based is different from the SSB type on which the reference measurement value is based (that is, changed);

-The frequency used to measure PCell (SSB) changes;

- The frequency (of SSB) on which the current measurement value is based is different (ie changed) from the frequency (of SSB) used for the reference measurement value.

Optionally, step 101 can also be transformed into: if the UE meets at least one of the above conditions, set the "reference measurement value" of the PCell in the RRM measurement relaxation criterion to the "current measurement value" plus an offset value ( For example: SSBoffset), the offset value can be a positive or negative number, can be preconfigured, or configured by the network through system messages, RRC proprietary signaling, or MAC CE.

Optionally, the measurement of the PCell may further refer to the L3 (Layer 3) RSRP measurement of the SSB-based PCell, or may further refer to the L3 RSRQ measurement of the SSB-based PCell.

Optionally, the "current measurement value" may refer to the current L3 RSRP measurement value of the SSB-based PCell, or may refer to the current L3 RSRQ measurement value of the SSB-based Pcell. "Reference measurement value" may refer to a reference value set relative to a certain moment before the current measurement. The reference measurement value is used to compare with the current measurement value to determine whether the measurement relaxation criterion is met.

Among them, optionally, each of the above conditions can be further expressed as the SSB type or frequency has changed for T1 time, or the SSB type or frequency has been different for T1 time, T1 can be pre-configured, or the network passes through the system message or RRC proprietary signaling configuration.

Optionally, before step 101, a judgment may also be added. If the UE measures PCell based on SSB, step 101 will be executed. Among them, "the UE measures PCell based on SSB" can also be expressed as "the UE is configured to measure PCell based on SSB", or "the UE acquires PCell measurement based on SSB".

Optionally, in 303, the updated reference measurement value is used to evaluate whether the relaxed measurement condition is met. The specific evaluation process can be found in the above description.

Optionally, in step 305, a report is sent to the base station based on the evaluation result.

Optionally, in step 305, if the UE is configured to report the RRM measurement relaxation criterion satisfaction indication to the base station, if the UE satisfies the RRM measurement relaxation criterion during the T2 period, and the type of SSB used to measure the PCell during T2 If no change occurs, it is further determined whether it is necessary to send a UEAssistanceInformation message to the base station, carrying indication information indicating that the UE meets the relaxation criteria.

Optionally, step 305 can also be another implementation, that is, if the UE is configured to report the RRM measurement relaxation criterion satisfaction indication to the base station, if the type of SSB used by the UE to measure the PCell during T2 has changed, if The last indication sent to the base station indicates that the relaxation criterion is met, then a UEAssistanceInformation message is sent to the base station, carrying indication information indicating that the UE does not meet the relaxation criterion.

Optionally, step 305 can also be implemented in another way: if the UE is not configured and needs to report the RRM measurement relaxation criterion satisfaction indication to the base station (this judgment is an optional operation, it may not be judged), if the UE is during T2 The type of SSB used to measure PCell has changed. If the UE is currently in RRM measurement relaxation, stop RRM measurement relaxation, and/or resume normal RRM measurement.

Wherein, optionally, T2 may refer to the time period (timeperiod) in which the measurement value of PCell continuously satisfies the relaxed measurement criterion. T2 can be pre-configured, or the network can configure it through system messages or RRC proprietary signaling. Among them, "the type of SSB of the PCell used for measurement changes" can also be expressed as "the type of SSB on which the current measurement value is based is different from the type of SSB on which the reference measurement value is based", or "the type of SSB used for measuring the PCell" The frequency (of SSB) changes", or expressed as "the frequency (of SSB) on which the current measurement value is based is different from the frequency (of SSB) used for the reference measurement value".

Example 2

FIG. 4 is a flowchart of a measurement relaxation assessment method according to Embodiment 2 of the present invention.

This implementation includes steps 401, 403, and 405. "PCell" mentioned in this embodiment can also be replaced by "SpCell", that is, the process described for PCell is also applicable to SpCell. In this embodiment, "RRM measurement relaxation" can be replaced by "RLM/BFD measurement relaxation", that is, the described process is also applicable to RLM/BFD measurement relaxation.

Optionally, in step 401, when the CSI-RS configuration changes, update the reference measurement value to the current measurement value. Optionally, if the UE meets at least one of the following conditions, set the "reference measurement value" of the PCell in the RRM measurement relaxation criterion to the "current measurement value":

-The configuration of the CSI-RS of the PCell used for measurement changes;

-The configuration of the CSI-RS on which the current measurement value is based is different from the configuration of the SSB on which the reference measurement value is based (that is, changed).

Optionally, step 201 can also be transformed into: if the UE meets at least one of the above conditions, set the "reference measurement value" of the PCell in the RRM measurement relaxation criterion to the "current measurement value" plus an offset value ( For example: CSI-RSoffset), the offset value can be a positive number or a negative number, can be preconfigured, or configured by the network through system messages, RRC proprietary signaling, or MAC CE.

Optionally, the measurement of the PCell may further refer to the L3 (Layer 3) RSRP measurement of the PCell based on CSI-RS, or may further refer to the L3 RSRQ measurement of the PCell based on CSI-RS.

Wherein, optionally, the "current measurement value" may refer to the current L3 RSRP measurement value of the PCell based on CSI-RS, or may refer to the current L3 RSRQ value of the Pcell based on CSI-RS. "Reference measurement value" may refer to a reference value set relative to a certain moment before the current measurement. The reference measurement value is used to compare with the current measurement value to determine whether the measurement relaxation criterion is met.

Optionally, each of the above conditions can be further expressed as T3 time has elapsed since the configuration of the CSI-RS changed, and T3 can be pre-configured, or the network can be configured through system messages or RRC proprietary signaling.

Optionally, before step 201, a judgment may also be added. If the UE measures the PCell based on CSI-RS, step 201 will be executed. Among them, "the UE measures PCell based on CSI-RS" can also be expressed as "the UE is configured to measure PCell based on CSI-RS", or "the UE acquires PCell measurement based on CSI-RS".

Optionally, in 403, the updated reference measurement value is used to evaluate whether the relaxed measurement condition is met. The specific evaluation process can be found in the above description.

Optionally, in 405, a report is sent to the base station based on the evaluation result.

Optionally, in step 405, if the UE is configured to report the RRM measurement relaxation criterion satisfaction indication to the base station, if the UE satisfies the RRM measurement relaxation criterion during the T2 period, and is used to measure the CSI-RS of the PCell during T2 The configuration has not changed before further determining whether it is necessary to send a UEAssistanceInformation message to the base station, carrying indication information indicating that the UE meets the relaxation criteria.

Optionally, step 405 can also be another implementation, that is, if the UE is configured to report the RRM measurement relaxation criterion satisfaction indication to the base station, if the configuration of the CSI-RS used by the UE to measure the PCell during T2 has changed. , if the last indication sent to the base station indicates that the relaxation criterion is met, then a UEAssistanceInformation message is sent to the base station, carrying indication information indicating that the UE does not meet the relaxation criterion.

Optionally, step 405 can also be implemented in another way: if the UE is not configured and needs to report the RRM measurement relaxation criterion satisfaction indication to the base station (this judgment is an optional operation, it may not be judged), if the UE is during T2 The configuration of CSI-RS used to measure PCell has changed, and if the UE is currently in RRM measurement relaxation, stop RRM measurement relaxation, and/or resume normal RRM measurement.

Optionally, T2 may refer to the time period (timeperiod) in which the measurement value of the PCell continuously satisfies the relaxed measurement criterion. T2 may be preconfigured, or the network may configure it through system messages or RRC dedicated signaling.

Among them, "the configuration of the CSI-RS of the PCell used for measurement changes" can also be expressed as "the configuration of the CSI-RS on which the current measurement value is based is different from the configuration of the CSI-RS on which the reference measurement value is based."

Optionally, the CSI-RS configuration in this embodiment may include subcarrier spacing, and/or CP type, and/or center frequency of CSI-RS, etc.

Example 3

Based on Embodiment 1 and Embodiment 2, in this embodiment, optionally, the UE performs RRM relaxation measurement evaluation based on SSB or CSI-RS and is configured by the network. The configuration method can be through system messages, RRC proprietary signaling, or MAC CE. When the UE performs RRM measurement relaxation evaluation, it first determines whether to use the PCell measurement results based on SSB or the PCell measurement results based on CSI-RS according to the network configuration. That is, if the network configures the UE to perform RRM relaxation measurement evaluation based on SSB, the UE uses the PCell measurement results obtained based on SSB for evaluation; if the network configures the UE to perform RRM relaxation measurement evaluation based on CSI-RS, the UE uses the PCell measurement results obtained based on CSI-RS. PCell measurement results are evaluated.

In this embodiment, "RRM measurement relaxation" can be replaced by "RLM/BFD measurement relaxation", that is, the described process is also applicable to RLM/BFD measurement relaxation. "PCell" mentioned in this embodiment can also be replaced by "SpCell", that is, the process described for PCell is also applicable to SpCell.

Example 4

For the configuration of the MeasObjectNR cell:

Optionally, if the connected RRM relaxed measurement criterion is configured, the ssbFrequency (SSB frequency), ssbSubcarrierSpacing (SSB subcarrier space), smtc1 (main measurement time configuration) and smtc2 (auxiliary measurement time configuration) in the MeasObjectNR information element are Several fields must be configured. Optionally, if the connected state RRM relaxed measurement criterion is configured, the refFreqCSI-RS field in the MeasObjectNR information element is not configured or absent (absent).

Optionally, if the connected state RRM relaxation measurement criterion is configured, and the connected state RRM relaxation measurement criterion is configured to be based on SSB, then the ssbFrequency, ssbSubcarrierSpacing, smtc1, and smtc2 fields in the MeasObjectNR information element must be configured. Optionally, if the connected state RRM relaxed measurement criterion is configured, and the connected state RRM relaxed measurement criterion is configured to be based on SSB, the refFreqCSI-RS field in the MeasObjectNR information element is not configured or does not appear (absent).

The "RRM relaxation measurement criterion" may also be any relevant configuration used to configure RRM relaxation measurement.

Optionally, if the connected state RLM/BFD relaxed measurement criteria is configured, the ssbFrequency, ssbSubcarrierSpacing, smtc1 and smtc2 fields in the MeasObjectNR information element must be configured. Optionally, if the connected state RLM/BFD relaxed measurement criterion is configured, the refFreqCSI-RS field in the MeasObjectNR information element is not configured or absent (absent).

Optionally, if the connected state RLM/BFD relaxed measurement criterion is configured, and the connected state RLM/BFD relaxed measurement criterion is configured to be based on SSB, then the ssbFrequency, ssbSubcarrierSpacing, smtc1 and smtc2 fields in the MeasObjectNR information element ) must be configured. Optionally, if the connected state RLM/BFD relaxed measurement criterion is configured, and the connected state RLM/BFD relaxed measurement criterion is configured to be based on SSB, the refFreqCSI-RS field in the MeasObjectNR information element is not configured or absent (absent).

The "RLM/BFD relaxation measurement criterion" may also be any relevant configuration used to configure RLM/BFD relaxation measurement.

Example 5

Optionally, if the network is configured with NCD-SSB, the connected state RRM measurement relaxation related configuration will no longer be configured, that is, the RRM measurement relaxation related configuration will not appear (absent). If the network is configured with CD-SSB, the RRM measurement relaxation related configuration will not be configured. Optional.

Optionally, if the network is configured with RRM measurement relaxation related configurations, NCD-SSB will not be configured, that is, NCD-SSB related configurations will not appear (absent). If the network is not configured with RRM measurement relaxation related configurations, NCD-SSB related configurations will not be configured. Optional.

Optionally, if the network is configured with NCD-SSB, the connected RLM/BFD measurement relaxation related configuration will no longer be configured, that is, the RLM/BFD measurement relaxation related configuration will not appear (absent). If the network is configured with CD-SSB, RLM /BFD measurement relaxation related configuration is optional.

Optionally, if the network is configured with RLM/BFD measurement relaxation related configurations, NCD-SSB will not be configured, that is, NCD-SSB related configurations will not appear (absent). If the network is not configured with RLM/BFD measurement relaxation related configurations, NCD -SSB related configuration is optional.

Among them, RRM measurement relaxation related configurations may include but are not limited to: RRM measurement relaxation criteria, whether it is necessary to report RRM measurement relaxation criterion satisfaction indication to the base station, and whether to enable RRM measurement relaxation.

Among them, RLM/BFD measurement relaxation related configurations may include but are not limited to: RLM/BFD measurement relaxation criteria, whether it is necessary to report RLM/BFD measurement relaxation criteria satisfaction indication to the base station, and whether to enable RLM/BFD measurement relaxation.

The "RRM relaxation measurement criterion" may also be any relevant configuration used to configure RRM relaxation measurement. The "RLM/BFD relaxation measurement criterion" may also be any relevant configuration used to configure RLM/BFD relaxation measurement.

Figure 5 is a schematic structural block diagram of the user equipment UE involved in the present invention. As shown in Figure 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, or the like. The memory 502 may include, for example, volatile memory (such as random access memory RAM), hard disk drive (HDD), non-volatile memory (such as flash memory), or other memory. Memory 502 stores program instructions. When this instruction is executed by the processor 501, it can execute the above method executed by the user equipment as described in detail in the present invention.

The program running on the device according to the present invention may be a program that causes the computer to implement 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.

Programs for realizing the functions of each embodiment of the present invention can be recorded on a computer-readable recording medium. Corresponding functions can be realized by causing the computer system to read programs recorded on the recording medium and execute these 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 short-term dynamic storage program recording medium, or any other recording medium readable by a computer.

Various features or functional modules of the devices used in the above-described embodiments may be implemented or performed by circuits (eg, single-chip or multi-chip integrated circuits). Circuitry 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. A general-purpose processor can be a microprocessor or any existing processor, controller, microcontroller, or state machine. The above circuit may be a digital circuit or an analog circuit. When new integrated circuit technologies emerge 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.

Furthermore, the present invention is not limited to the above-described embodiment. Although various examples of the embodiments have been described, the 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 accompanying drawings. However, the specific structure is not limited to the above-described embodiment, and the present invention also includes any design changes that do not deviate from the gist 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. Furthermore, components having the same effect described in the above embodiments may be substituted for each other.

Claims (10)

1. A measurement relaxation assessment method performed by a user device, comprising: Perform a given type of measurement on the cell where the user equipment is located to obtain the current measurement value; and evaluating whether a measurement relaxation criterion corresponding to said measurement relaxation is satisfied based on a reference measurement value for a measurement relaxation corresponding to said given type of measurement, said current measurement value and a given threshold value, Wherein, if the measurement configuration of the cell changes when the current measurement value is obtained, the reference measurement value for the measurement relaxation is updated to the current measurement value, and whether the measurement relaxation criterion is met The evaluation is based on updated reference measurements. 2. The method of claim 1, further comprising: If the given type of measurement is performed based on SSB, it is determined that the measurement configuration of the cell has changed if at least one of the following conditions is met: The type of SSB used to measure the cell has changed; The type of SSB on which the current measurement value is based is different from the type of SSB on which the current reference measurement value is based; The frequency of the SSB used to measure the cell has changed; The frequency of the SSB on which the current measurement value is based is different from the frequency of the SSB on which the current reference measurement value is based, or, If the given type of measurement is performed based on CSI-RS, if at least one of the following conditions is met, it is determined that the measurement configuration of the cell in which the user equipment is located has changed: The configuration of the CSI-RS used to measure the cell has changed; The CSI-RS configuration on which the current measurement value is based is different from the configuration of the CSI-RS corresponding to the current reference measurement value. 3. The method of claim 1, wherein, If the first predetermined time elapses after the measurement configuration is changed when the current measurement value is acquired, the reference measurement value for the measurement relaxation is updated to the current measurement value. 4. The method of claim 1, further comprising: When the reference measurement value relaxed for the measurement is updated to the current measurement value, the reference measurement value is updated to a value obtained by adding the current measurement value and a given offset value. 5. The method of claim 4, wherein if the given type of measurement is performed based on SSB, the given offset value is determined based on the frequency range of SSB, or If the given type of measurement is performed based on CSI-RS, the given offset value is determined based on the value range of one or more parameters in the CSI-RS configuration. 6. The method according to any one of claims 1-5, further comprising: When it is determined that the measurement relaxation criterion satisfaction status needs to be reported to the base station, a measurement relaxation criterion satisfaction status indication is reported to the base station based on the evaluation result. 7. The method of claim 6, wherein reporting the measurement relaxation criterion satisfaction status indication to the base station based on the evaluation result includes: If it is determined that the measurement relaxation criterion satisfaction status has changed according to the evaluation result, the changed relaxation criterion satisfaction status is reported to the base station. 8. The method of claim 6, wherein reporting the measurement relaxation criterion satisfaction status indication to the base station based on the evaluation result includes: If the evaluation results obtained within the second given time all indicate that the relaxed measurement criterion is met, and the measurement configuration does not change within the second given time, then the relaxed measurement criterion is reported to the base station meet instructions, and / or, If the measurement configuration changes within the second given time period, and a message indicating that the measurement relaxation criterion is met was reported to the base station last time, then a message indicating that the measurement relaxation criterion is not met is reported to the base station. news. 9. The method of claim 1, wherein, The user equipment is configured with a measurement parameter set including a measurement parameter set for performing the given type of measurement. When configuration information related to performing measurements based on SSB is configured in the measurement parameter set, the measurement parameter set does not exist. Configuration related to CSI-RS. 10. A user equipment, comprising: processor; and memory, which stores instructions, wherein the instructions, when executed by the processor, perform a method according to any one of claims 1 to 9.