CN116405969A

CN116405969A - Terminal relaxation measurement method and device

Info

Publication number: CN116405969A
Application number: CN202310669060.1A
Authority: CN
Inventors: 王贻先; 程运; 张一鸣; 周江平
Original assignee: Wuhan Shiju Information Technology Co ltd
Current assignee: Wuhan Shiju Information Technology Co ltd
Priority date: 2023-06-07
Filing date: 2023-06-07
Publication date: 2023-07-07
Anticipated expiration: 2043-06-07
Also published as: CN116405969B

Abstract

The application provides a terminal relaxation measurement method and device, which are used for solving the technical problem that the terminal relaxation measurement accuracy is low due to low accuracy of non-cell edge evaluation. The measurement scheme comprises the following steps: the terminal obtains relaxation measurement parameters from a system information block message sent by the base station; after receiving the release signaling sent by the base station, the terminal is switched from a connection state to an idle state or an inactive state, starts to measure the reference signal receiving power and the reference signal receiving quality of the serving cell, the reference signal receiving power and the reference signal receiving quality of the neighbor cell, and generates a measurement report; the terminal evaluates whether the relaxation measurement conditions are met or not according to the relaxation measurement parameters and the measurement report; when the relaxation measurement condition is met, the terminal reduces the measurement frequency, avoids that the relaxation measurement is started to affect the normal terminal cell reselection process due to misjudgment, improves the accuracy of the non-cell edge of the terminal while guaranteeing the service quality of the wireless communication network, and reduces the power consumption of the terminal.

Description

Terminal relaxation measurement method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a terminal relaxation measurement method and apparatus.

Background

With the maturity of 5G NR (New Radio) technology and the wide commercial use of devices, the proportion of base stations and terminal devices to wireless communication system devices is increasing. The increasing base stations and terminal equipment result in huge power consumption, which makes the terminal energy consumption high and standby time low. In order to solve the power consumption problem, 3GPP (3 rd Generation Partnership Project, third generation partnership project) organizations propose relaxation measurements (relaxed measurement) in the R16/R17 protocol version, in rrc_idle (IDLE state) and rrc_inactive (INACTIVE state) states, the terminal reduces the measurement frequency, thereby reducing the power consumption.

In implementing the prior art, the inventors found that:

in the practical relaxation measurement application scene, networking and coverage modes are flexible and various, the correlation between signal coverage of adjacent other cells is not considered based on the non-cell edge judgment criterion of the original relaxation measurement of the signal physical coverage, if the terminal starts the relaxation measurement at the moment, the terminal can reduce the measurement frequency, the terminal is influenced to rapidly reselect to other suitable cells, and the wireless network cannot provide optimal communication service.

Therefore, it is necessary to provide a terminal relaxation measurement method and device for solving the technical problem of low accuracy of terminal relaxation measurement caused by low accuracy of non-cell edge evaluation.

Disclosure of Invention

The embodiment of the application needs to provide a terminal relaxation measurement method and device, which are used for solving the technical problem that the terminal relaxation measurement accuracy is low due to low non-cell edge evaluation accuracy.

Specifically, a terminal relaxation measurement method includes the following steps:

the base station sends a system information block message to the terminal;

the terminal receives the system information block message and obtains the relaxation measurement parameters;

the base station sends a release signaling to the terminal;

the terminal receives the release signaling and switches from the connection state to the idle state or the inactive state;

the terminal measures the reference signal receiving power and the reference signal receiving quality of the service cell, and the reference signal receiving power and the reference signal receiving quality of the neighbor cell in an idle state or a non-active state;

generating a measurement report according to the reference signal receiving power and the reference signal receiving quality of the serving cell, and the reference signal receiving power and the reference signal receiving quality of the adjacent cell;

the terminal evaluates whether the relaxation measurement conditions are met or not according to the relaxation measurement parameters and the measurement report;

when the relaxation measurement condition is satisfied, the terminal reduces the measurement frequency to reduce the power consumption of the terminal.

Further, the terminal evaluates whether the relaxation measurement condition is satisfied according to the relaxation measurement parameter and the measurement report, including:

Taking the reference signal receiving power of the serving cell as a reference value of the reference signal receiving power;

acquiring the reference signal received power of a service cell after cell reselection, and taking the reference signal received power as a reference signal received power measurement value;

setting a reference signal receiving power threshold value;

setting a time parameter T1;

comparing the reference signal received power measurement value with the reference signal received power reference value;

in time T1, comparing the difference between the reference signal received power measured value and the reference signal received power reference value with the reference signal received power threshold value to determine a mobility measurement condition;

acquiring a reference signal received power measured value, a reference signal received strength measured value and cell reselection times of a serving cell in a measurement report;

setting a reference signal receiving power detection threshold, a reference signal receiving intensity detection threshold, a time length T2 of the number of terminal reselection times and a cell reselection time threshold;

comparing the reference signal received power measurement value with a reference signal received power detection threshold value;

comparing the reference signal received strength measurement value with a reference signal received strength detection threshold value;

comparing the cell reselection times with a threshold value of the cell reselection times in the T2 time, and determining a non-cell edge measurement condition;

And evaluating whether the relaxation measurement condition is met according to the mobility measurement condition and the non-cell edge measurement condition.

Further, when the relaxation measurement condition is satisfied, the terminal reduces the measurement frequency to reduce the power consumption of the terminal, including:

in the time T1, the measured value of the received power of the reference signal is smaller than the reference value of the received power of the reference signal, the difference between the measured value of the received power of the reference signal and the reference value of the received power of the reference signal does not exceed the threshold value of the received power of the reference signal, and the terminal reduces the measuring frequency.

when the measured value of the reference signal received power is larger than the threshold value of the reference signal received power detection and the measured value of the reference signal received intensity is larger than the threshold value of the reference signal received intensity detection, and the cell reselection frequency is smaller than or equal to the threshold value of the cell reselection frequency in the T2 time, the terminal reduces the measurement frequency.

Further, the measuring of the reference signal receiving power and the reference signal receiving quality of the neighboring cell includes the same-frequency measurement, different-frequency measurement and different-system measurement.

The embodiment of the application also provides a terminal relaxation measurement device, which comprises:

The system information sending module is used for sending a system information block message to the terminal by the base station;

the system information receiving module is used for receiving the system information block message by the terminal and obtaining the relaxation measurement parameters;

the signaling sending module is used for sending the release signaling to the terminal by the base station;

the signaling receiving module is used for receiving the release signaling by the terminal and switching from the connection state to the idle state or the inactive state;

the measurement module is used for measuring the reference signal receiving power and the reference signal receiving quality of the serving cell, the reference signal receiving power and the reference signal receiving quality of the neighbor cell under the idle state or the inactive state of the terminal; the method is also used for generating a measurement report according to the reference signal receiving power and the reference signal receiving quality of the serving cell, and the reference signal receiving power and the reference signal receiving quality of the neighbor cell;

the evaluation module is used for evaluating whether the relaxation measurement conditions are met or not according to the relaxation measurement parameters and the measurement report by the terminal; and is further configured to reduce the measurement frequency when the relaxation measurement condition is satisfied, so as to reduce the power consumption of the terminal.

Further, the evaluation module is configured to evaluate whether the relaxation measurement condition is satisfied according to the relaxation measurement parameter and the measurement report, and specifically is configured to:

setting a reference signal receiving power threshold value;

setting a time parameter T1;

Further, the evaluation module is configured to, when the relaxation measurement condition is satisfied, reduce the measurement frequency by the terminal to reduce the power consumption of the terminal, and specifically is configured to:

Further, the measurement module is configured to measure the reference signal receiving power and the reference signal receiving quality of the neighboring cell, where the measurement module includes co-frequency measurement, inter-frequency measurement, and inter-system measurement.

The technical scheme provided by the embodiment of the application has at least the following beneficial effects:

the terminal evaluates whether the relaxation measurement conditions are met or not according to the relaxation measurement parameters and the measurement report; when the relaxation measurement condition is met, the terminal reduces the measurement frequency, avoids that the relaxation measurement is started to affect the normal terminal cell reselection process due to misjudgment, improves the accuracy of the non-cell edge of the terminal while guaranteeing the service quality of the wireless communication network, reduces the power consumption of the terminal and reduces the time of terminal cell reselection.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a flow chart of a terminal relaxation measurement method provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of a relaxed measurement non-cell edge decision of the present application;

fig. 3 is a schematic structural diagram of a terminal relaxation measurement device according to an embodiment of the present application.

The reference numerals in the drawings are as follows:

100-terminal relaxation measuring device

11-system information transmitting module

12-system information receiving module

13-signalling module

14-signalling receiving module

15-measuring module

16-an evaluation module.

Description of the embodiments

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

With the maturity of 5G NR (New Radio) technology and the wide commercial use of devices, the proportion of 5G base stations and terminal devices to wireless communication system devices is increasing. The power consumption of the increasingly 5G base stations and terminal equipments has been a problem due to their spectral characteristics and the use of new technologies. The 5G base station causes huge power consumption due to high power consumption, and also has environmental problems caused by heat dissipation. Meanwhile, the energy consumption of the 5G terminal is high due to the use of the NR new technology, and the standby time is greatly reduced.

The 3GPP organization proposes to relax the measurement, and in rrc_idle (IDLE state) and rrc_inactive (INACTIVE state), the terminal reduces the measurement frequency, thereby reducing the power consumption.

In an actual application scene, the original non-cell edge judgment criterion for relaxation measurement is not accurate enough, so that the terminal can reduce the measurement frequency, influence the terminal to rapidly reselect to other suitable cells, and a wireless network cannot provide optimal communication service.

The reason why the terminal cannot quickly reselect to other suitable cells and the wireless network cannot provide the optimal communication service will be described in detail below.

Currently, non-cell edge decisions in relaxation measurements are measured and decided based on signal strength and quality, with the decision threshold being configured by higher layer protocols. According to the cell reselection criteria, when the terminal is in rrc_idle and rrc_inactive states, if the terminal is at a non-cell edge at this time, then the probability of cell reselection is relatively small, and the relaxation measurement may be turned on. The non-cell edge detection mechanism of the measurement is relaxed and a decision is made by an absolute threshold, i.e. by deciding whether the terminal is located at the signal coverage edge of the cell. But in the actual application scene, various networking and coverage modes are flexible and various. In the same coverage and overlapping coverage scenarios, although the terminal is not at the coverage edge of the signal, due to the multi-signal overlapping coverage, when the terminal is in rrc_idle and rrc_inactive states, frequent measurements are required to achieve the fast cell reselection process, so that the terminal can camp on a more suitable cell and obtain better wireless communication service.

The original relaxed measured non-cell edge decision criterion is based on signal physical coverage. Therefore, the association between signal coverage of adjacent other cells is not considered, and if the terminal starts the relaxation measurement at this time, the terminal may reduce the measurement frequency, which affects the terminal to quickly reselect to other suitable cells, so that the terminal cannot be provided with optimal communication service by the wireless network.

Referring to fig. 1, the present application provides a terminal relaxation measurement method, which includes the following steps:

s100: the base station transmits a system information block message to the terminal.

The Base Station (BS) can understand the interface device of the terminal accessing the internet, and can realize wireless signal transmission between the wired communication network and the wireless terminal.

The terminal may be understood as a user equipment including a mobile phone, a Mobile Station (MS), a mobile terminal (mobile terminal), a notebook computer, etc. The user equipment may communicate with one or more core networks via a radio access network (radio access network, RAN). For example, the user equipment may be a mobile telephone (or "cellular" telephone), a computer with a mobile terminal, a portable, pocket, hand-held, computer-built-in, or vehicle-mounted mobile device. The above is merely an example, and the practical application is not limited thereto.

The system information (System Information) may be understood as downlink broadcast information periodically transmitted by the base station. In the connection of a terminal with a base station, system information plays a key role.

And in the communication process, when the terminal is powered on, reading the system information to carry out cell residence. And when the terminal is in an idle state, reading system information to perform cell selection and cell reselection. The system information provides the terminal with all necessary information needed to access the network, such as system frame number, system bandwidth, PLMN, cell selection and reselection thresholds, etc.

It can be appreciated that different mobile communication systems have different system information, including LTE system information and 5G NR system information. The 5G NR system information includes a master information block (MIB, master Information Block) and a series of system information blocks (SIBs, system Information Block). A series of system information blocks includes SIB1 through SIB9.

The content included in the system information can be classified into Minimum SI (Minimum system information) and Other SI (Other system information).

The Minimum SI contains basic information of initial access and obtaining other system information, i.e. it mainly includes MIB and SIB1.Other SI covers all system messages not broadcast at the Minimum SI, and reference is made to the following detailed description.

In the application scenario of the relaxation measurement of the terminal, the system information block can be SIB2 and is mainly used for obtaining cell reselection public information, service cell reselection information and common-frequency cell reselection information. The base station transmits the system information block SIB2 to the terminal through a physical channel in a periodic broadcast or an on-demand broadcast. Of course, the base station may also send the system information block SIB2 to the terminal in a proprietary manner.

S200: the terminal receives the system information block message and obtains the relaxation measurement parameters.

And after receiving the system information block SIB2, the terminal obtains the relaxation measurement parameters.

It is understood that in a specific relaxation measurement procedure, the terminals may be classified into Normal UEs (Normal terminals) and RedCap UEs (reduced capability UE, reduced capability terminals).

When the terminal is a Normal UE, the relaxed measurement parameters include low mobility parameters and non-cell edge parameters. When only low mobility parameters are configured in SIB2 and non-cell edge parameters are not configured, the terminal only obtains criteria for judging whether the terminal is in low mobility. When only non-cell edge parameters are configured in SIB2 and low mobility parameters are not configured, the terminal only obtains criteria for judging whether the terminal is at the cell edge. When the low mobility parameter and the non-cell edge parameter are configured in SIB2 at the same time, the specific criteria are judged differently in different configuration cases.

When the terminal is a RedCap UE, the relaxation measurement parameters include a stationary parameter and a non-cell edge parameter. When only the stationarity parameter is configured in SIB2, the terminal only obtains the criteria for determining whether it is stationary. When only non-cell edge parameters are configured in SIB2 and no stationary parameters are configured, the terminal only obtains criteria for judging whether the terminal is at the cell edge. When both stationary parameters and non-cell edge parameters are configured in SIB2, the terminal obtains criteria for determining whether to be stationary and not at the cell edge.

S300: the base station transmits a release signaling to the terminal.

S400: and the terminal receives the release signaling and is switched from the connection state to the idle state or the inactive state.

The Release signaling may be understood as RRC Release signaling. The terminal in the CONNECTED state may be represented by rrc_connected. The terminal in the IDLE state may be represented by rrc_idle. The terminal in the INACTIVE state may be represented by rrc_inactive.

When the terminal is in the rrc_idle state, the terminal is in a disconnected state with the radio access network, and the terminal is also in a disconnected state with the core network. And when the terminal is in the RRC_INACTIVE state, the terminal is in a suspension state with the wireless access network, and the terminal is in a disconnection state with the core network.

In a specific RRC connection Release scenario, when an RRC reconfiguration failure, a handover failure, a radio link failure, an integrity protection failure, and other failures occur between the terminal and the base station, the base station initiates an RRC Release signaling, and instructs the terminal to perform an RRC Release procedure. After receiving the RRC Release signaling from the base station, the terminal enters an RRC_IDLE or RRC_INACTIVE state according to the indication content of the base station.

S500: and the terminal measures the reference signal receiving power and the reference signal receiving quality of the serving cell, and the reference signal receiving power and the reference signal receiving quality of the neighbor cell in an idle state or a non-active state.

S600: and generating a measurement report according to the reference signal receiving power and the reference signal receiving quality of the serving cell, and the reference signal receiving power and the reference signal receiving quality of the neighbor cell.

It can be appreciated that the terminal is in an idle state or inactive state for cell selection and cell reselection. The cell reselection may be understood as that after the terminal in the idle state accords with the cell reselection criterion, the terminal performs cell reselection and camps on the new cell. In the cell reselection process, the terminal needs to perform current serving cell measurement first, and mainly measures the reference signal received power and the reference signal received quality.

In a communication network system, RSRP (Reference Signal Receiving Power, reference signal received power) can be understood as one of the key parameters for measuring the reference signal strength, which is the average value of the signal power received on all REs (Resource elements) carrying reference signals within a data symbol. The reference signal received power is in dB. RSRQ (Reference Signal Receiving Quality, reference signal received quality) can be understood as the ratio of N RSRP/RSSI). Where N is the number of RBs (Resource blocks) of the carrier RSSI measurement bandwidth. The RSRQ is used to order different candidate cells for cell reselection.

In a specific serving cell measurement scenario, the reference signal received power may be represented by Srxlev; the reference signal reception quality may be expressed as square. The conditions for the terminal to camp on the serving cell are as follows:

srxlev >0 and square >0. Wherein,,

Srxlev=Qrxlevmeas–(Qrxlevmin+Qrxlevminoffset)–Pcompensation-Qoffsettemp；

Squal=Qqualmeas–(Qqualmin+Qqualminoffset)-Qoffsettemp。

the specific meaning of the parameters in the formula is as follows:

srxlev is the received power in cell search; qrxlevmeas is an RSRP measurement value, that is, the level actually measured by the terminal, reflecting the signal strength of the current cell; qrxlevmin is the minimum reception level camping on the cell; the minimum reception level camping on the cell is a parameter configured in the SIB message. The Qrxlevmin exists in SIB2, SIB4 and SIB5 and is used for calculating a same-frequency cell, a different-frequency cell and a different-system cell respectively; qrxlevminoffset is the minimum receive level offset. The Qrxlevminoffset exists in SIB3, SIB4 and SIB5 and is used for calculating a same-frequency cell, a different-frequency cell and a different-system cell respectively; pcompensation is measurement compensation; qoffsetemp is temporarily biased for the cell. The square is the received signal quality in the cell search. Qqualmeas is RSRQ measurement; qqualmin is the minimum reception quality, and is a parameter configured in SIB message; qqualminoffset is the minimum reception quality offset.

Further, in a preferred embodiment provided in the present application, the measurement of the reference signal received power and the reference signal received quality of the neighboring cell includes co-frequency measurement, inter-frequency measurement, and inter-system measurement.

It can be understood that when the reference signal received power and the reference signal received quality of the serving cell are less than or equal to the threshold value, the neighbor cell measurement is performed. The neighbor cell measurement includes the same frequency measurement, different frequency measurement and different system measurement. The same frequency can be understood as the current serving cell and the target cell to be measured are on the same carrier. The different frequency may be understood as that the current serving cell and the target cell to be measured are not on the same carrier. And generating a measurement report according to the reference signal receiving power and the reference signal receiving quality of the serving cell, and the reference signal receiving power and the reference signal receiving quality of the neighbor cell.

S700: and the terminal evaluates whether the relaxation measurement condition is met or not according to the relaxation measurement parameters and the measurement report.

It can be appreciated that the terminals can be classified according to performance requirements, and the terminals can be classified into: normal UEs and recap UEs. As the name suggests, the Redcap UE may be understood as a terminal that reduces the full capability, but still supports the basic capability. Including but not limited to bandwidth, delay, MIMO, etc. Due to the fact that the integrity is reduced, the Redcap UE is low in complexity, low in cost, long in battery endurance and suitable for the industrial sensing field, the video monitoring field, the wearable equipment field, intelligent factories and the like.

The relaxation measurement parameters include: mobility parameters and non-cell edge parameters. The mobility parameters and non-cell edge parameters SIB2 configuration. Wherein the mobility parameters include: low mobility parameters and stationary parameters. When the mobility parameters are configured in SIB2 and the non-cell edge parameters are not configured, the terminal only obtains the criterion for judging mobility. When non-cell edge parameters are configured in SIB2 and mobility parameters are not configured, the terminal only obtains criteria for judging whether to be at the cell edge. When the mobility parameter and the non-cell edge parameter are configured in SIB2 at the same time, the terminal obtains a criterion for judging mobility and a criterion whether or not it is at a cell edge.

In a specific embodiment of the present application, the terminal may be understood as a Normal UE. The relaxation measurement parameters of the Normal UE include: low mobility parameters and non-cell edge parameters. The Normal UE evaluating whether a relaxation measurement condition is satisfied includes: low mobility assessment and non-cell edge assessment.

In another specific embodiment of the present application, the terminal may be understood as a Redcap UE. The relaxation measurement parameters of the Redcap UE include: stationary parameters and non-cell edge parameters. The Redcap UE evaluating whether a relaxation measurement condition is satisfied includes: static evaluation and non-cell edge evaluation.

Further, in a preferred embodiment provided in the present application, the evaluating, by the terminal, whether the relaxation measurement condition is satisfied according to the relaxation measurement parameter and the measurement report includes:

setting a reference signal receiving power threshold value;

setting a time parameter T1;

Specifically, the following is determination of mobility measurement conditions.

setting a reference signal receiving power threshold value;

setting a time parameter T1;

in time T1, the difference between the reference signal received power measurement value and the reference signal received power reference value is compared with a reference signal received power threshold value to determine a mobility measurement condition.

In a specific embodiment of the present application, when the terminal is a Normal UE, the determining mobility measurement conditions, that is, determining low mobility conditions.

In the low mobility measurement condition evaluation scenario of the present application, the reference signal received power of the serving cell may be understood as the reference signal received power of the current serving cell of the terminal.

The reference signal received power reference value may be denoted as SrxlevRef. The reference signal received power measurement may be denoted as Srxlev. The reference signal received power threshold value may be denoted as SsearchDeltaP. The time parameter T1 may be denoted TsearchDeltaP.

It will be appreciated that if the current Srxlev value is greater than the SrxlevRef value, the current Srxlev value is referred to as the new SrxlevRef value. The SrxlevRef value will be pushed to a higher level. If the current Srxlev value is less than the SrxlevRef value, the current Srxlev value is taken as the new SrxlevRef value. The SrxlevRef value will be pushed to a lower level. When the Srxlev value is less than the SrxlevRef value, but the gap does not exceed the threshold SsearchDeltaP, the SrxlevRef value is not updated.

The reference signal received power measurement value and the reference signal received power reference value are compared.

The difference between SrxlevRef and Srxlev is compared with SrearchDeltaP size within time TrearchDeltaP to determine mobility measurement conditions.

In a specific embodiment of the present application, when the terminal is a Redcap UE, the mobility measurement condition is determined, that is, the stationarity condition is determined.

In the static measurement condition evaluation scenario of the present application, the reference signal received power of the serving cell may be understood as the reference signal received power of the current serving cell of the terminal.

The reference signal received power reference value may be denoted as srxlevrefstate. The reference signal received power measurement may be denoted as Srxlev. The reference signal received power threshold may be denoted as SsearchDeltaP-Stationary. The time parameter T1 may be expressed as TsaearchDeltaP-Stationary.

It will be appreciated that if the current Srxlev value is greater than the SrxlevRefStationary value, the current Srxlev value is referred to as the new SrxlevRefStationary value. The srxlevrefstate value will be pushed to a higher level. If the current Srxlev value is smaller than the SrxlevRefStationary value, the current Srxlev value is taken as the new SrxlevRefStationary value. The srxlevrefstate value will be pushed to a lower level. When the Srxlev value is smaller than the SrxlevRefStationary value, but the difference does not exceed the threshold SsearchDeltaP-Stationary, the SrxlevRefStationary value is not updated.

And comparing the difference between SrxlevRefStationary and Srxlev with SsearchDeltaP-Stationary size in the time TsaarchDeltaP-Stationary, and determining the mobility measurement condition.

Specifically, the following is a determination of non-cell edge measurement conditions.

and comparing the cell reselection times with a threshold value of the cell reselection times in the T2 time, and determining non-cell edge measurement conditions.

In particular embodiments of the present application, a terminal may be understood as a Normal UE. The reference signal received power measurement may be denoted as Srxlev. The reference signal received strength measurement may be denoted as square. The number of cell reselections may be denoted NReselect. The reference signal received power detection threshold may be denoted as ssearchthreshold. The reference signal reception strength detection threshold may be denoted as ssearchthreshold q. The time length T2 of the number of terminal reselections may be denoted as TReselectDelta. The cell reselection number threshold may be denoted as NReselectThreshold.

Comparing Srxlev, ssearchThresholdP sizes; comparing Squal, ssearchThresholdQ sizes; and comparing the NReselect and NReselectThreshold sizes in the TReselectDelta time to determine non-cell edge measurement conditions.

In a specific embodiment of the present application, the terminal may be understood as a Redcap UE. The reference signal received power measurement may be denoted as Srxlev. The reference signal received strength measurement may be denoted as square. The number of cell reselections may be denoted NReselect. The reference signal received power detection threshold may be denoted as ssearchthreshold p2. The reference signal reception strength detection threshold may be denoted as ssearchthreshold q2. The time length T2 of the number of terminal reselections may be denoted as TReselectDelta. The cell reselection number threshold may be denoted as NReselectThreshold.

Comparing Srxlev, ssearchThresholdP size; comparing Squal, ssearchThresholdQ size; and comparing the NReselect and NReselectThreshold sizes in the TReselectDelta time to determine non-cell edge measurement conditions.

And evaluating whether the relaxation measurement condition is met according to the static measurement condition and the non-cell edge measurement condition.

S800: when the relaxation measurement condition is satisfied, the terminal reduces the measurement frequency to reduce the power consumption of the terminal.

It is understood that the frequency is the transmission frequency of the wireless signal. The wireless signals comprise uplink signals sent by the terminal to the base station and downlink signals sent by the base station to the terminal.

Further, in another preferred embodiment provided in the present application, when the relaxation measurement condition is satisfied, the terminal reduces the measurement frequency to reduce the power consumption of the terminal, including:

When only low mobility parameters are configured in SIB2 and non-cell edge parameters are not configured, the terminal only obtains criteria for judging whether the terminal is in low mobility. In the low mobility measurement condition evaluation scenario of the present application, the reference signal received power reference value may be denoted as SrxlevRef. The reference signal received power measurement may be denoted as Srxlev. The reference signal received power threshold value may be denoted as SsearchDeltaP. The time parameter T1 may be denoted TsearchDeltaP.

And in the time TrearchDeltaP, when (SrxlevRef-Srxlev) < SrearchDeltaP is satisfied, the terminal is estimated to be in a low mobility state.

In the static measurement condition evaluation scenario of the present application, the reference signal received power reference value may be expressed as srxlevrefstatiory. The reference signal received power measurement may be denoted as Srxlev. The reference signal received power threshold may be denoted as SsearchDeltaP-Stationary. The time parameter T1 may be expressed as TsaearchDeltaP-Stationary.

And in the time TsearchDeltaP-Stationary, when (SrxlevRefStationary-Srxlev) < SserearchDeltaP-Stationary is satisfied, the terminal is estimated to be in a static state.

Further, in still another preferred embodiment provided in the present application, when the relaxation measurement condition is satisfied, the terminal reduces the measurement frequency to reduce the power consumption of the terminal, including:

It can be appreciated that when both low mobility parameters and non-cell edge parameters are configured in SIB2, the specific criteria may be judged differently in different configuration scenarios.

In the non-cell edge measurement condition evaluation scenario of the present application, the reference signal received power measurement value may be denoted as Srxlev, as shown in fig. 2. The reference signal received strength measurement may be denoted as square. The number of cell reselections may be denoted NReselect. The reference signal received power detection threshold may be denoted as ssearchthreshold. The reference signal reception strength detection threshold may be denoted as ssearchthreshold q. The time length T2 of the number of terminal reselections may be denoted as TReselectDelta. The cell reselection number threshold may be denoted as NReselectThreshold.

When Srxlev > SsearchThresholdP, squal > ssearchthreshold q is satisfied, NReselect < = NReselectThreshold during the treselection delta time, the terminal is assessed to be at the non-cell edge. When the terminal is at the non-cell edge, i.e. the relaxation measurement condition is satisfied, the terminal reduces the measurement frequency to reduce the power consumption of the terminal.

In the relaxed measurement non-cell edge raw decision principle, the terminal is evaluated to be at the non-cell edge when Srxlev > SsearchThresholdP, squal > ssearchthreshldq is satisfied.

The correlation between signal coverage between neighboring cells is not considered based on the evaluation condition of the signal physical coverage. If the terminal starts the relaxation measurement at this point, the terminal will decrease the measurement frequency. In the scenario of multi-signal overlapping coverage, the serving cell where the terminal is located may not be the most suitable cell, but at this time, the terminal reduces the measurement frequency, and cannot quickly reselect a cell, and access other suitable cells. Therefore, the terminal cannot obtain an optimal communication service provided by the wireless network.

In other words, the principle of original determination of non-cell edge of relaxation measurement based on signal physical coverage is easy to misdetermine the terminal at the cell edge, resulting in that the terminal starts relaxation measurement. In this case, the original measurement frequency is reduced, which affects the measurement result of the terminal, and further affects the cell reselection process performed by the terminal, so that the terminal cannot quickly reselect to a suitable cell.

In the application, NReselectThreshold is added to the relaxation measurement parameter of the base station to set the threshold of the number of reselection times of the terminal cell. And adding TReselectDelta in the base station configuration parameters, and setting the time length of the reselection times of the terminal cell. And adding a parameter NReselect at the terminal side for counting the cell reselection times in the terminal relaxation measurement evaluation process. By adding detection on the non-logic cell edge of the terminal in the process of judging the non-cell edge of the relaxation measurement, the accuracy of the non-cell edge condition evaluation of the terminal is improved, the relaxation measurement is prevented from being started by the terminal caused by misjudgment, and the terminal can obtain the optimal communication service provided by the wireless network.

When only non-cell edge parameters are configured in SIB2 and no stationary parameters are configured, the terminal only obtains criteria for judging whether the terminal is at the cell edge. In the non-cell edge measurement condition evaluation scenario of the stationary state terminal of the present application, the reference signal received power measurement value may be denoted as Srxlev. The reference signal received strength measurement may be denoted as square. The number of cell reselections may be denoted NReselect. The reference signal received power detection threshold may be denoted as ssearchthreshold p2. The reference signal reception strength detection threshold may be denoted as ssearchthreshold q2. The time length T2 of the number of terminal reselections may be denoted as TReselectDelta. The cell reselection number threshold may be denoted as NReselectThreshold.

The terminal is assessed to be at the non-cell edge when Srxlev > ssearchthreshold p2, square > ssearchthreshold q2, NReselect < = NReselectThreshold for the treselection delta time are satisfied. When the terminal is at the non-cell edge, i.e. the relaxation measurement condition is satisfied, the terminal reduces the measurement frequency to reduce the power consumption of the terminal.

It will be appreciated that the procedure of evaluating non-cell edges when a terminal is evaluated in a stationary state is similar to the procedure of evaluating non-cell edges of a terminal in a mobile state. The method comprises the steps of adding NReselectThreshold to the relaxation measurement parameters of the base station, and setting a threshold value of the number of reselection times of the terminal cell. And adding TReselectDelta in the base station configuration parameters, and setting the time length of the reselection times of the terminal cell. And adding a parameter NReselect at the terminal side for counting the cell reselection times in the terminal relaxation measurement evaluation process. By adding detection on the non-logic cell edge of the terminal in the process of judging the non-cell edge of the relaxation measurement, the accuracy of the non-cell edge condition evaluation of the terminal is improved, the relaxation measurement is prevented from being started by the terminal caused by misjudgment, and the terminal can obtain the optimal communication service provided by the wireless network.

When the low mobility parameter and the non-cell edge parameter are configured in SIB2 at the same time, the specific criteria are judged differently in different configuration cases.

Under the conditions of mobility condition evaluation and non-cell edge measurement condition evaluation, when the low mobility and non-cell edge evaluation criteria are met, the terminal reduces the measurement frequency, so that the purpose of measurement relaxation is achieved.

And in the time TrearchDeltaP, when (SrxlevRef-Srxlev) < SrearchDeltaP is satisfied, the terminal is estimated to be in a low mobility state. When Srxlev > SsearchThresholdP, squal > ssearchthreshold q is satisfied, NReselect < = NReselectThreshold during the treselection delta time, the terminal is assessed to be at the non-cell edge. When the low mobility condition and the non-cell edge condition are satisfied at the same time, the terminal reduces the measurement frequency, thereby achieving the purpose of relaxing the measurement.

When both stationary parameters and non-cell edge parameters are configured in SIB2, the terminal obtains criteria for determining whether to be stationary and not at the cell edge.

Under the conditions of mobility condition evaluation and non-cell edge measurement condition evaluation, when the static and non-cell edge evaluation criteria are satisfied, the terminal reduces the measurement frequency, thereby achieving the purpose of relaxation measurement.

And in the time TsearchDeltaP-Stationary, when (SrxlevRefStationary-Srxlev) < SserearchDeltaP-Stationary is satisfied, the terminal is estimated to be in a static state. The terminal is assessed to be at the non-cell edge when Srxlev > ssearchthreshold p2, square > ssearchthreshold q2, NReselect < = NReselectThreshold for the treselection delta time are satisfied. When the terminal is at the non-cell edge. When the static condition and the non-cell edge condition are satisfied at the same time, the terminal reduces the measurement frequency, thereby achieving the purpose of relaxing the measurement.

It should be noted that the relaxation measurement method is not limited to the 5G system, and is also applicable to other communication systems requiring terminal energy saving to reduce power consumption.

In summary, in the relaxation measurement method provided by the application, statistics of the number of cell reselection times of the terminal in the state aiming at RRC_IDLE and RRC_INACTIVE is added in a relaxation measurement non-cell edge judging mechanism. And in a certain timer time, further judging whether the terminal is at the cell edge by detecting whether the cell reselection times of the terminal are smaller than a set threshold. When the cell reselection times are smaller than the threshold, the terminal is not considered to be at the edge of the current signal coverage logic cell; otherwise, the terminal is considered to be at the edge of the logical cell of the current signal coverage. Therefore, whether the terminal is positioned at the cell edge can be judged more accurately, so that the relaxation measurement can be started more accurately, the influence on the measurement result of the terminal caused by the excessive opening of the relaxation measurement is avoided, the cell reselection process of the terminal is further influenced, and a proper cell cannot be reselected rapidly.

The embodiment of the application also provides a relaxation measurement device for executing the steps S100-S800.

Referring to fig. 3, the present application provides a terminal relaxation measurement device 100, including:

the system information sending module 11 is configured to send a system information block message to the terminal by the base station.

In the application scenario of the relaxation measurement of the terminal, the system information block can be SIB2 and is mainly used for obtaining cell reselection public information, service cell reselection information and common-frequency cell reselection information.

The base station transmits the system information block SIB2 to the terminal through a physical channel in a periodic broadcast or an on-demand broadcast. Of course, the base station may also send the system information block SIB2 to the terminal in a proprietary manner.

The system information receiving module 12 is configured to receive the system information block message and obtain the relaxation measurement parameter.

The signaling sending module 13 is configured to send the release signaling to the terminal by the base station.

The signaling receiving module 14 is configured to receive the release signaling, and switch from the connection state to the idle state or the inactive state.

A measurement module 15, configured to measure, in an idle state or an inactive state, a reference signal receiving power and a reference signal receiving quality of a serving cell, and a reference signal receiving power and a reference signal receiving quality of a neighboring cell; and the method is also used for generating a measurement report according to the reference signal receiving power and the reference signal receiving quality of the serving cell, and the reference signal receiving power and the reference signal receiving quality of the neighbor cell.

In a communication network system, RSRP may be understood as one of the key parameters for measuring the reference signal strength, being the average of the signal power received on all REs carrying reference signals within a data symbol. The reference signal received power is in dB. RSRQ can be understood as the ratio of N RSRP/RSSI. Where N is the number of RBs of the carrier RSSI measurement bandwidth. The RSRQ is used to order different candidate cells for cell reselection.

srxlev >0 and square >0. Wherein,,

Srxlev=Qrxlevmeas–(Qrxlevmin+Qrxlevminoffset)–Pcompensation-Qoffsettemp；

Squal=Qqualmeas–(Qqualmin+Qqualminoffset)-Qoffsettemp。

the specific meaning of the parameters in the formula is as follows:

Further, in a preferred embodiment provided in the present application, the measurement module 15 is configured to measure the reference signal received power and the reference signal received quality of the neighboring cell by using the terminal, including co-frequency measurement, inter-frequency measurement, and inter-system measurement.

And the evaluation module 16 is used for evaluating whether the relaxation measurement condition is met according to the relaxation measurement parameters and the measurement report by the terminal.

It can be appreciated that the terminals can be classified according to performance requirements, and the terminals can be classified into: normal UEs (Normal terminals) and Redcap UEs. As the name suggests, the Redcap UE may be understood as a terminal that reduces the full capability, but still supports the basic capability. Including but not limited to bandwidth, delay, MIMO, etc. Due to the fact that the integrity is reduced, the Redcap UE is low in complexity, low in cost, long in battery endurance and suitable for the industrial sensing field, the video monitoring field, the wearable equipment field, intelligent factories and the like.

Further, the evaluation module 16 is configured to evaluate whether the relaxation measurement condition is satisfied according to the relaxation measurement parameter and the measurement report, and specifically is configured to:

setting a reference signal receiving power threshold value;

setting a time parameter T1;

setting a reference signal receiving power threshold value;

setting a time parameter T1;

The evaluation module 16 is further configured to reduce the measurement frequency by the terminal when the relaxation measurement condition is satisfied, so as to reduce the power consumption of the terminal.

Further, the evaluation module 16 is configured to, when the relaxation measurement condition is satisfied, reduce the measurement frequency by the terminal to reduce the power consumption of the terminal, specifically:

When only the stationarity parameter is configured in the system information block SIB2, the terminal only obtains the criteria for judging whether the terminal is stationary. In the static measurement condition evaluation scenario of the present application, the reference signal received power reference value may be expressed as srxlevrefstatiory. The reference signal received power measurement may be denoted as Srxlev. The reference signal received power threshold may be denoted as SsearchDeltaP-Stationary. The time parameter T1 may be expressed as TsaearchDeltaP-Stationary.

It can be appreciated that when only non-cell edge parameters are configured in the system information block SIB2 and low mobility parameters are not configured, the terminal only obtains criteria for determining whether it is at the cell edge.

In the non-cell edge measurement condition evaluation scenario of the present application, the reference signal received power measurement value may be denoted as Srxlev. The reference signal received strength measurement may be denoted as square. The number of cell reselections may be denoted NReselect. The reference signal received power detection threshold may be denoted as ssearchthreshold. The reference signal reception strength detection threshold may be denoted as ssearchthreshold q. The time length T2 of the number of terminal reselections may be denoted as TReselectDelta. The cell reselection number threshold may be denoted as NReselectThreshold.

When only non-cell edge parameters are configured in the system information block SIB2 and no static parameters are configured, the terminal only obtains the criterion for judging whether the terminal is at the cell edge.

In the non-cell edge measurement condition evaluation scenario of the stationary state terminal of the present application, the reference signal received power measurement value may be denoted as Srxlev. The reference signal received strength measurement may be denoted as square. The number of cell reselections may be denoted NReselect. The reference signal received power detection threshold may be denoted as ssearchthreshold p2. The reference signal reception strength detection threshold may be denoted as ssearchthreshold q2. The time length T2 of the number of terminal reselections may be denoted as TReselectDelta. The cell reselection number threshold may be denoted as NReselectThreshold.

It can be appreciated that when both low mobility parameters and non-cell edge parameters are configured in SIB2, the specific criteria may be judged differently in different configuration scenarios. Under the conditions of mobility condition evaluation and non-cell edge measurement condition evaluation, when the low mobility and non-cell edge evaluation criteria are met, the terminal reduces the measurement frequency, so that the purpose of measurement relaxation is achieved.

When both the stationary parameter and the non-cell-edge parameter are configured in the system information block SIB2, the terminal obtains criteria for determining whether to be stationary and not at the cell edge.

In summary, in the relaxation measurement device provided by the present application, statistics of the number of cell reselection times of the terminal in the rrc_idle and rrc_inactive states is added to the relaxation measurement non-cell edge determination mechanism in the evaluation module. And in a certain timer time, further judging whether the terminal is at the cell edge by detecting whether the cell reselection times of the terminal are smaller than a set threshold. When the cell reselection times are smaller than the threshold, the terminal is not considered to be at the edge of the current signal coverage logic cell; otherwise, the terminal is considered to be at the edge of the logical cell of the current signal coverage. Therefore, whether the terminal is positioned at the cell edge can be judged more accurately, so that the relaxation measurement can be started more accurately, the influence on the measurement result of the terminal caused by the excessive opening of the relaxation measurement is avoided, the cell reselection process of the terminal is further influenced, and a proper cell cannot be reselected rapidly.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement "comprises" or "comprising" an element defined by … … does not exclude the presence of other identical elements in a process, method, article or apparatus that comprises the element.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims

1. A terminal relaxation measurement method, comprising the steps of:

the base station sends a system information block message to the terminal;

The base station sends a release signaling to the terminal;

2. The method of claim 1, wherein the terminal evaluating whether the relaxation measurement condition is satisfied based on the relaxation measurement parameter, the measurement report, comprises:

setting a reference signal receiving power threshold value;

Setting a time parameter T1;

3. The method of claim 2, wherein the terminal reduces the measurement frequency to reduce power consumption of the terminal when the relaxation measurement condition is satisfied, comprising:

4. The method of claim 2, wherein the terminal reduces the measurement frequency to reduce power consumption of the terminal when the relaxation measurement condition is satisfied, comprising:

5. The method of claim 1, wherein the measuring the reference signal received power and the reference signal received quality of the neighbor cell comprises a common frequency measurement, a different frequency measurement, and a different system measurement.

6. A terminal relaxation measurement device, comprising:

7. The apparatus of claim 6, wherein the evaluation module is configured to evaluate whether a relaxation measurement condition is met based on a relaxation measurement parameter, a measurement report, and specifically configured to:

setting a reference signal receiving power threshold value;

setting a time parameter T1;

8. The apparatus of claim 7, wherein the evaluation module is configured to reduce the measurement frequency by the terminal to reduce the power consumption of the terminal when the relaxation measurement condition is satisfied, specifically configured to:

9. The apparatus of claim 7, wherein the evaluation module is configured to reduce the measurement frequency by the terminal to reduce the power consumption of the terminal when the relaxation measurement condition is satisfied, specifically configured to:

10. The apparatus of claim 6, wherein the measurement module is configured to measure reference signal received power and reference signal received quality of a neighboring cell by a terminal, and the reference signal received power and the reference signal received quality comprise co-frequency measurement, inter-frequency measurement, and inter-system measurement.