WO2023102728A1

WO2023102728A1 - Method and apparatus for threshold adjustment in ntn, and device and storage medium

Info

Publication number: WO2023102728A1
Application number: PCT/CN2021/136064
Authority: WO
Inventors: 李海涛
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2023-06-15
Also published as: CN117941417A

Abstract

The present application relates to the technical field of communications, and discloses a method and apparatus for threshold adjustment in an NTN, and a device and a storage medium. The method is applied to a terminal and comprises: recording state information related to a neighboring region measurement starting threshold of the terminal, the state information being used for adjusting the neighboring region measurement starting threshold; and reporting the state information. By means of the state information reported by the terminal, a network device can adjust the neighboring region measurement starting threshold to improve the accuracy of the threshold and ensure continuous network coverage of the terminal.

Description

Method, device, equipment and storage medium for adjusting threshold in NTN

technical field

The present application relates to the field of communication technologies, and in particular to a method, device, device and storage medium for adjusting a threshold in a non-terrestrial communication network (Non-Terrestrial Network, NTN).

Background technique

In the NTN system, the terminal performs neighbor cell measurement according to the neighbor cell measurement start threshold configured by the network device.

Taking the threshold value including the reference signal receiving power (Reference Signal Receiving Power, RSRP) threshold and/or the reference signal receiving quality (Reference Signal Receiving Quality, RSRQ) threshold as an example, in the process of neighbor cell measurement, due to the RSRP and The measurement error of/or RSRQ makes the measurement value unable to accurately reflect the difference between the cell edge and the cell center, thus making it difficult for the network device to configure a proper RSRP and/or RSRQ threshold.

When the threshold value configuration is too large, it will cause the terminal to start the neighbor cell measurement too early, causing additional power consumption; if the threshold value configuration is too small, it may cause the terminal to start the neighbor cell measurement too late, before the target cell is found The coverage of the original serving cell is lost, resulting in service interruption.

Contents of the invention

The embodiment of the present application provides a method, device, device and storage medium for adjusting the threshold in NTN. Through the state information reported by the terminal, the network device adjusts the threshold value for starting the measurement of the adjacent cell, so as to improve the accuracy of the threshold value. . Described technical scheme is as follows:

According to one aspect of the present application, a method for adjusting a threshold in NTN is provided, which is applied to a terminal, and the method includes:

Recording status information related to the threshold value for starting the measurement of the adjacent cell of the terminal, and the status information is used to adjust the threshold value for starting the measurement of the adjacent cell;

Report status information.

According to one aspect of the present application, a method for adjusting a threshold in NTN is provided, which is applied to a network device, and the method includes:

receiving status information reported by the terminal, where the status information is related to the starting threshold of the terminal's neighbor cell measurement;

Based on the state information, the threshold value for starting the measurement of the adjacent cell of the terminal is adjusted.

According to one aspect of the present application, a device for adjusting a threshold in NTN is provided, the device comprising:

A recording module, configured to record state information related to the threshold value for starting the measurement of the adjacent cell of the terminal, and the state information is used to adjust the threshold value for starting the measurement of the adjacent cell;

The reporting module is used for reporting status information.

The receiving module is used to receive the status information reported by the terminal, and the status information is related to the starting threshold of the terminal's neighbor cell measurement;

An adjustment module, configured to adjust the starting threshold of the terminal's neighbor cell measurement based on the state information.

According to one aspect of the present application, a terminal is provided, where the terminal includes a processor;

The processor is configured to record state information related to the threshold value for starting the measurement of the adjacent cell of the terminal, and the state information is used to adjust the threshold value for starting the measurement of the adjacent cell;

Report status information.

According to one aspect of the present application, a network device is provided, and the network device includes a processor;

The processor is configured to receive status information reported by the terminal, where the status information is related to a threshold value for starting a measurement of a neighboring cell of the terminal;

According to one aspect of the present application, a computer-readable storage medium is provided, and a computer program is stored in the storage medium, and the computer program is used to be executed by a processor, so as to implement the above method for adjusting a threshold in NTN.

According to one aspect of the present application, a chip is provided, the chip includes a programmable logic circuit and/or program instructions, and when the chip is running, it is used to implement the method for adjusting the threshold in the NTN as described above.

According to one aspect of the present application, a computer program product or computer program is provided, the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processor reads and executes the instruction from the computer-readable storage medium. Executing computer instructions to realize the above-mentioned method for adjusting threshold in NTN.

The technical solutions provided by the embodiments of the present application at least include the following beneficial effects:

Through the status information reported by the terminal related to the starting threshold of the terminal's neighboring cell measurement, the network device can adjust the neighboring cell measuring starting threshold to improve the accuracy of the threshold and ensure continuous network coverage of the terminal.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a network architecture diagram of a transparent transmission load NTN provided by an exemplary embodiment of the present application;

FIG. 2 is a network architecture diagram of a regenerative load NTN provided by an exemplary embodiment of the present application;

Fig. 3 is the flowchart of the method for adjusting threshold in NTN provided by an exemplary embodiment of the present application;

Fig. 4 is the flowchart of the method for adjusting the threshold in NTN provided by an exemplary embodiment of the present application;

Fig. 5 is the flowchart of the method for adjusting threshold in NTN provided by an exemplary embodiment of the present application;

Fig. 6 is the flowchart of the method for adjusting the threshold in NTN provided by an exemplary embodiment of the present application;

FIG. 7 is a flowchart of a method for adjusting thresholds in NTN provided by an exemplary embodiment of the present application;

FIG. 8 is a flowchart of a method for adjusting a threshold in NTN provided by an exemplary embodiment of the present application;

FIG. 9 is a schematic diagram of a method for adjusting a threshold in NTN provided by an exemplary embodiment of the present application;

FIG. 10 is a schematic diagram of a method for adjusting a threshold in NTN provided by an exemplary embodiment of the present application;

FIG. 11 is a structural diagram of a device for adjusting a threshold in NTN provided by an exemplary embodiment of the present application;

FIG. 12 is a structural diagram of an apparatus for adjusting a threshold in NTN provided by an exemplary embodiment of the present application;

Fig. 13 is a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

Currently, the Third Generation Partnership Project (3GPP) is researching NTN technology, which generally uses satellite communication to provide communication services to ground users. Compared with terrestrial cellular network communication, satellite communication has many unique advantages. First of all, satellite communication is not restricted by the user's region. For example, general land communication cannot cover areas such as oceans, mountains, deserts, etc. that cannot be equipped with communication equipment or are not covered by communication due to sparse population. For satellite communication, a satellite That is, it can cover a large ground, and satellites can orbit the earth, so theoretically every corner of the earth can be covered by satellite communications. Secondly, satellite communication has great social value. Satellite communication can be covered at low cost in remote mountainous areas, poor and backward countries or regions, so that people in these regions can enjoy advanced voice communication and mobile Internet technology, which is conducive to narrowing the digital gap with developed regions and promoting regional development. develop. Thirdly, the distance of satellite communication is long, and the cost of communication does not increase significantly with the increase of communication distance; finally, the stability of satellite communication is high, and it is not limited by natural disasters.

Communication satellites are divided into low-earth orbit (Low-Earth Orbit, LEO) satellites, medium-earth orbit (Medium-Earth Orbit, MEO) satellites, geosynchronous orbit (Geos Timing Advance TAtionary Earth Orbit, GEO) satellites, High Elliptical Orbit (HEO) satellites, etc. At present, the main researches are LEO and GEO.

1.LEO: The altitude of low-orbit satellites ranges from 500km to 1500km, and the corresponding orbital period is about 1.5 hours to 2 hours. The signal propagation delay of single-hop communication between users is generally less than 20ms. The maximum satellite visible time is 20 minutes. The signal propagation distance is short, the link loss is small, and the requirements for the transmission power of the user terminal are not high.

2. GEO: Satellites in geosynchronous orbit with an orbital height of 35,786km and a rotation period around the earth of 24 hours. The signal propagation delay of single-hop communication between users is generally 250ms.

In order to ensure satellite coverage and improve the system capacity of the entire satellite communication system, satellites use multiple beams to cover the ground. A satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover tens to hundreds of kilometers in diameter. ground area. There are at least two NTN scenarios: transparent transmission payload NTN, as shown in Figure 1; regenerative payload NTN, as shown in Figure 2.

The NTN network consists of the following network elements:

· 1 or more gateways: used to connect satellites and terrestrial public networks.

· Feeder link: The link used for communication between the gateway and the satellite.

• Service link: a link used for communication between the terminal and the satellite.

·Satellite: From the functions it provides, it can be divided into two types: transparent transmission load and regenerative load.

· Transparent transmission load: only provide the functions of radio frequency filtering, frequency conversion and amplification. It only provides transparent forwarding of the signal, and will not change the waveform signal it forwards.

Regenerative load: In addition to providing radio frequency filtering, frequency conversion and amplification functions, it can also provide demodulation/decoding, routing/conversion, encoding/modulation functions. It has part or all of the functions of the base station.

Inter-satellite links (ISL): Exist in regenerative load scenarios.

Before introducing the technical solution of this application, the relevant knowledge of this application will be described below:

At present, with people's pursuit of speed, delay, high-speed mobility, energy efficiency, and the diversity and complexity of services in future life, the 3GPP international standards organization has begun to develop the fifth-generation communication (5th-Generation, 5G). The main application scenarios of 5G are: Enhanced Mobile Broadband (Enhanced Mobile Broadband, eMBB), Ultra-Reliable & Low-Latency Communication (URLLC), Massive Machine Type of Communication, mMTC).

The new air interface (New Radio, NR) can also be deployed independently. In the 5G network environment, in order to reduce air interface signaling and quickly restore wireless connections, and quickly restore data services, a new radio resource control (Radio Resource Control, RRC) state is defined. , that is, the RRC inactive (RRC_INACTIVE) state. This state is different from the RRC idle (RRC_IDLE) state and the RRC active (RRC_ACTIVE) state.

RRC_IDLE: Mobility is terminal-based cell selection and reselection, paging is initiated by the terminal, and the paging area is configured by the terminal. There is no terminal access layer (Access Stratum, AS) context on the network device side, and there is no RRC connection.

RRC_CONNECTED: There is an RRC connection, and the network device and the terminal have a terminal access layer context. The network device side determines the location of the terminal at the specific cell level, and the mobility is controlled by the network device side. Unicast data can be transmitted between terminals and network devices.

RRC_INACTIVE: Mobility is terminal-based cell selection and reselection, there is a connection between the core network (Core Network, CN) and NR, which can be abbreviated as a connection between CN-NR, and there is a certain network device in the context of the terminal access layer In the above, paging is triggered by the radio access network (Radio Access Network, RAN), and the RAN-based paging area is managed by the RAN, and the network device side determines the location of the terminal based on the RAN paging area level.

District selection:

A cell satisfies the S criterion, if and only if the received power and signal quality of the current cell meet the following conditions at the same time:

Srxlev>0 AND Squal>0,

Srxlev＝ _Qrxlevmeas –( _Qrxlevmin + _{Qrxlevminoffset} )–P _compensation –Qoffset _temp ,

Squal = Q _qualmeas - (Q _qualmin + Q _{qualminoffset} ) - Qoffset _temp .

in:

Q _rxlevmeas and Q _qualmeas are the cell reference signal receiving power (Reference Signal Receiving Power, RSRP) and/test signal receiving quality (Reference Signal Receiving Quality, RSRQ) measured by the terminal;

Q _rxlevmin and Q _qualmin are the minimum RSRP and RSRQ required by the network device side;

Q _{rxlevminoffset} and Q _{qualminoffset} are offsets to prevent the ping-pong effect between two public land mobile communication networks (Public Lands Mobile Network, PLMN) due to radio environment fluctuations. Offset to be considered only when camping on a cell with a suitable visited PLMN and periodically searching for higher priority PLMNs.

P _compensation is power compensation, for example, power compensation due to low terminal power when the maximum transmission power allowed by the network side is greater than the maximum uplink transmission power determined by the terminal's own capabilities.

Qoffset _temp is only used in special scenarios, and is not applicable in normal situations, such as the "Chiba problem" scenario.

Community reselection related background:

Cell reselection refers to the process in which the terminal selects a target cell to provide service signals by monitoring the signal quality of neighboring cells and the current serving cell in idle mode. When the signal quality and level of the neighboring cell meet the S criterion and a certain reselection decision criterion (R criterion), the terminal will access the cell and camp.

After the terminal successfully camps on, it will continue to measure the current cell. The RRC layer calculates Srxlev (S criterion) according to the RSRP measurement result, and compares it with the intra-frequency measurement start threshold (Sintrasearch) and the inter-frequency/inter-system measurement start threshold (Snonintrasearch), as the judgment condition for whether to start the neighbor cell measurement.

·Measurement configuration

– For intra-frequency and inter-frequency, configure per frequency SSB-based Measurement Timing Configuration (per frequency SMTC) based on Synchronization Signal Blocks (SSB) ) auxiliary measurement to achieve the purpose of terminal power saving.

· Cell signal quality acquisition

– The system broadcasts the parameter N and the threshold of per frequency, which are used to select the best beam (beam).

– linear average of the signal quality of the best top N beams that meet the threshold;

– If the parameter N and the threshold of the per frequency are not broadcast, the signal quality of the best beam in the cell is the cell signal quality.

·Target cell selection (R criterion)

– Control the candidate cell through rangeToBestCell, that is, among all the candidate cells within the rangeToBestCell range whose signal quality is worse than the best cell, select the cell with the most beams that meet the threshold and determine it as the target cell.

·Frequency priority: In order to achieve the load balancing purpose of different frequency points, the priority of different frequency points can be set on the network device side. The terminal preferentially camps on the high-priority frequency point. The frequency point priority can be obtained from system broadcast, or from dedicated signaling (RRC Release), or inherited from other radio access technologies (Radio Access Technology, RAT).

Priority configuration: use cell Reselection Priority and sub-priority to jointly indicate the final cell reselection frequency priority; cell Reselection Priority takes values from 0 to 7, and sub-priority takes values {0.2, 0.4, 0.6, 0.8} total Indicates 40 frequency priorities. Among them, sub-priority is only used for NR frequency and LTE frequency.

· Dedicated priority configuration release conditions: state transition, PLMN selection, timer overtime triggers dedicated priority configuration.

·Priority usage:

– There is no broadcast configuration if there is a dedicated configuration.

– Camp on any cell state, configured by broadcast.

– If no priority is configured, the default is the lowest.

– Frequencies between RATs will not be configured with the same frequency priority.

Measurement start of RRC_IDLE state and RRC_inactive state:

All relevant parameters of the terminal measurement behavior constraints in the RRC_IDLE (hereinafter referred to as IDLE) state and RRC_inactive (hereinafter referred to as inactive) state come from system broadcast messages. The following assumes that all relevant parameters are configured. If there is no configuration, the associated constraints do not exist.

1. For the start of intra-frequency measurement, when the serving cell Srxlev>S _IntraSearchP and the serving cell Squal>S _IntraSearchQ , do not start the same-frequency adjacent cell measurement, otherwise start the same-frequency adjacent cell measurement.

2. For the inter-frequency measurement of the same priority or low priority, when the serving cell Srxlev>S _{nonIntraSearchP} and the serving cell Squal>S _{nonIntraSearchQ} , the inter-frequency measurement of the same priority or low priority is not started, otherwise it is started.

3. For high-priority inter-frequency measurement, always start its measurement.

Schematically, the cell reselection behavior is based on the measurement results of neighboring cells:

1. For cell reselection for cells with the same frequency and different frequencies with the same priority, the R criterion (sorted by RSRP) needs to be met. The signal quality of the new cell is better than that of the current cell and lasts for a specified period of time, and the terminal stays in the original cell. The time is not shorter than 1s.

2. For reselection of high-priority cells, the signal quality of the high-priority cells needs to be higher than a certain threshold and last for a specified period of time, and the terminal stays in the original cell for no less than 1 second.

3. For low-priority cells to perform reselection, there is no high-priority cell, the cell with the same priority meets the requirements, the signal quality of the original cell is lower than a certain threshold, and the signal quality of the low-priority cell is higher than a certain threshold and lasts for a certain period of time , the terminal stays in the original cell for no less than 1s.

FIG. 3 shows a flowchart of a method for adjusting a threshold in NTN provided by an exemplary embodiment of the present application. The method is applied to a terminal and includes the following steps:

Step 101: Record the status information related to the starting threshold of the terminal's neighbor cell measurement.

Schematically, the status information is used to adjust the threshold for starting the measurement of the neighboring cells.

Wherein, the neighbor cell measurement start threshold value is used to indicate whether the terminal performs the neighbor cell measurement start threshold value.

According to the start threshold value of the neighbor cell measurement, the terminal can perform the neighbor cell measurement according to the requirements of the measurement protocol specification at an appropriate time. For example, when the terminal is within the coverage of the original serving cell, when a certain measurement value measured by the terminal is less than the start threshold, the terminal starts the neighbor cell measurement to find the target cell and camp the terminal in the target cell Inside.

Optionally, the status information includes but is not limited to at least one of the following information:

The signal quality of the original serving cell when the terminal discovers the target cell to camp on;

Wherein, the original serving cell is the cell where the terminal resides before performing the neighbor cell measurement; the target cell is the suitable (suitable) neighbor cell discovered by the terminal through the neighbor cell measurement, and after the target cell is found, the terminal camps on Stay in the area.

Optionally, the signal quality of the original serving cell when the terminal discovers the target cell to camp on refers to the RSRP measurement value of the original serving cell.

The moment when the terminal discovers the target cell;

It should be understood that this moment refers to the earliest time when the terminal detects the target cell to camp on. Optionally, the moment when the terminal discovers the target cell to camp on includes at least one of the following:

The earliest time when the terminal detects the SSB signal of the target cell;

The earliest time when the terminal detects that the SSB signal of the target cell exceeds the preset threshold;

The earliest time when the terminal detects the signal quality of the target cell;

The earliest time when the terminal detects that the signal quality of the target cell meets the cell selection criterion.

·Cell status information of the target cell and/or the original serving cell;

Schematically, the cell state information includes at least one of cell identity (Identity Document, ID) and frequency point information.

The start threshold of the neighbor cell measurement currently used by the terminal;

Optionally, the neighbor cell measurement start threshold currently used by the terminal includes but is not limited to at least one of the following: the RSRP threshold of the original serving cell; the RSRQ threshold of the original serving cell; the end service time of the original serving cell.

The current location of the terminal;

The end service time of the original service cell;

· The duration of the terminal being in any cell selection state.

Schematically, any cell selection state (any cell selection) refers to a state that the measurement result of the original serving cell does not meet the cell selection criteria, and the terminal enters without finding a suitable neighboring cell. Wherein, a suitable neighboring cell can also be understood as: a cell that can be camped on, or a target cell to camp on.

Wherein, the cell selection criterion includes the S criterion and the R criterion, and the measurement result of the original serving cell does not meet the cell selection criterion, which means that the measurement result of the original serving cell does not satisfy at least one of the S criterion and the R criterion. Wherein, the S criterion and the R criterion may refer to the foregoing content, and details are not repeated here.

Optionally, the time period during which the terminal is in any cell selection state may also be referred to as the time period during which the terminal has no suitable cell to camp on.

Step 102: Report status information.

After recording the above state information, the terminal reports the recorded state information to the network device, so that the network device can adjust the threshold value for starting the neighbor cell measurement according to the received state information. Subsequently, the network device sends the adjusted threshold value for starting the neighbor cell measurement to the terminal, and the terminal can perform the neighbor cell measurement based on it, so as to avoid starting the neighbor cell measurement too early or too late.

To sum up, in the method for adjusting the threshold in NTN provided by the embodiment of the present application, the network device can adjust the threshold value of the neighbor cell measurement start through the status information reported by the terminal related to the start threshold value of the adjacent cell measurement of the terminal , so as to improve the accuracy of the threshold value and ensure the continuous network coverage of the terminal.

Fig. 4 shows the flowchart of the method for adjusting the threshold in the NTN provided by an exemplary embodiment of the present application, the method includes the following steps:

Step 101: The terminal records state information related to the threshold value for starting the measurement of the adjacent cell of the terminal.

Schematically, the status information is used to adjust the threshold for starting the measurement of the neighboring cells. Wherein, the neighbor cell measurement start threshold value is used to indicate whether the terminal performs the neighbor cell measurement start threshold value.

Optionally, the status information includes but is not limited to at least one of the following information: the signal quality of the original serving cell when the terminal discovers the target cell to camp on; the moment when the terminal discovers the target cell to camp on; The cell status information of the serving cell; the threshold for starting the measurement of the adjacent cell currently used by the terminal; the current location of the terminal; the end service time of the original serving cell; the duration of the terminal being in any cell selection state.

Step 102: The terminal reports status information.

After recording the above state information, the terminal reports the recorded state information to the network device, so that the network device can adjust the threshold value for starting the neighbor cell measurement according to the received state information.

Optionally, step 102 may be implemented as: reporting status information according to a request of the network device when the terminal is in a connected state.

Step 103: The network device receives the status information reported by the terminal.

Wherein, relevant descriptions of the state information may refer to the foregoing content, and details are not repeated here.

Optionally, step 103 may be implemented as: sending a request to the terminal, and receiving status information reported by the terminal when the terminal is in a connected state.

Step 104: The network device adjusts the starting threshold of the terminal's neighbor cell measurement based on the state information.

According to different status information, the network equipment adjusts the threshold value of starting the neighbor cell measurement differently.

For example, the status information includes the RSRP of the original serving cell when the terminal discovers the target cell to camp on, and the threshold for starting the measurement of the neighboring cell currently used by the terminal is the RSRP threshold. The terminal measures and obtains the RSRP measurement value of the original serving cell, and reports it to the network device. If the RSRP measurement value is higher than the preset value, the configuration parameter of the RSRP threshold value is lowered. Wherein, the specific adjustment value can be determined according to the measured RSRP value and the preset value. If the difference between the measured RSRP value and the preset value is 10dB, the configuration parameter of the threshold value for starting the measurement of the adjacent cell is correspondingly lowered by 10dB or 8dB.

For another example, the status information includes the duration of the terminal being in any cell, and the threshold for starting the measurement of the neighboring cell is the end service time of the original serving cell. After receiving the duration reported by the terminal, the network device adjusts the service end time of the original serving cell. Assuming that the duration reported by the terminal is 50 milliseconds, the terminal may correspondingly reduce the end service time of the original serving cell by 50 milliseconds, or 60 milliseconds.

For another example, the state information includes the time when the terminal discovers the target cell to camp on and the cell state information of the target cell to camp on. The terminal reports the above two pieces of information to the network device, and the network device considers comprehensively according to a preset strategy, thereby adjusting the threshold value for starting the measurement of the neighboring cell. Wherein, the preset strategy may be defined according to actual needs, and this application does not make a limitation.

It should be understood that the above content is only an example and does not limit the present application.

In order to determine the specific moment when the terminal records the state information, based on FIG. 4, FIG. 5 shows a flow chart of a method for adjusting the threshold in NTN provided by an exemplary embodiment of the present application. Step 101 can be implemented as step 1011 and step 1012, specifically as follows:

Step 1011: After the target cell to reside on cannot be found and enters any cell selection state, continue to discover the target cell to reside on through neighbor cell measurement.

According to the foregoing content, the arbitrary cell selection state refers to a state that the terminal enters because the measurement result of the original serving cell does not meet the cell selection criteria and the terminal does not find a suitable neighboring cell. Wherein, a suitable neighboring cell can also be understood as: a cell that can be camped on, or a target cell to camp on.

Wherein, the cell selection criterion includes the S criterion and the R criterion, and the measurement result of the original serving cell does not meet the cell selection criterion, which means that the measurement result of the original serving cell does not satisfy at least one of the S criterion and the R criterion.

For example, the terminal moves during use. When the terminal is within the coverage of the original serving cell, the terminal can stay in the original serving cell; as the terminal moves, the terminal starts neighbor cell measurement to find a suitable neighbor cell.

In this process, the RSRP measurement value and RSRQ measurement value measured by the terminal may no longer satisfy the S criterion, and the terminal has not found a suitable neighboring cell. At this time, the state of the terminal is determined as an arbitrary cell selection state; then , the terminal continues to perform neighbor cell measurements until the target cell is found.

Optionally, the method for adjusting the threshold in the NTN provided in the embodiment of the present application further includes:

When the measurement result of the original serving cell does not meet the cell selection criterion, and the terminal does not find the target cell to camp on, the terminal determines to enter any cell selection state.

Wherein, the cell selection criterion and any cell selection state can refer to the foregoing content, and will not be repeated here.

Step 1012: When the target cell is found, record the state information related to the start threshold of the neighbor cell measurement.

After the terminal enters any cell selection state, it continues to measure adjacent cells until it finds the target cell to reside in; then, the terminal starts to record state information.

Wherein, the relevant content of the state information can refer to the foregoing content, and details are not repeated here.

According to the foregoing content, the information recorded by the terminal is also different if the content included in the state information is different.

Taking the state information including the signal quality of the original serving cell when the terminal finds the target cell to camp on as an example, based on FIG. 4, FIG. 6 shows a flow chart of a method for adjusting the threshold in NTN provided by an exemplary embodiment of the present application. Steps Step 101 can be implemented as step 101a, and step 103 can be implemented as step 103a respectively, specifically as follows:

Step 101a: When the signal of the original serving cell cannot be measured, the terminal records the minimum value of the RSRP of the original serving cell as negative infinity.

In the process of neighbor cell measurement, if the terminal moves fast, it may not be possible to measure the signal of the original serving cell. In this case, in order to enable the terminal to report status information to the network device, the minimum value of the RSRP of the original serving cell may be recorded as negative infinity.

Step 103a: The network device receives the minimum value of the RSRP of the original serving cell reported by the terminal as negative infinity.

Wherein, negative infinity is recorded when the terminal cannot measure the signal of the original serving cell.

In the case where the neighbor cell measurement start threshold includes the end service time of the original serving cell, based on FIG. 4, FIG. 7 shows a flow chart of a method for adjusting the threshold in NTN provided by an exemplary embodiment of the present application, step 101 It can be implemented as step 101b, specifically as follows:

Step 101b: When the earliest time when the signal quality of the target cell to camp on meets the cell selection criterion is later than the time when the original serving cell loses coverage, record the state information related to the threshold for starting the measurement of the neighboring cell.

Wherein, the time when the original serving cell loses coverage may be determined according to the end service time of the original serving cell.

For the elaboration on the cell selection criteria and the service end time of the original serving cell, please refer to the above, and details will not be repeated here.

Schematically, in the multiple embodiments given above, the steps on the terminal side can be separately used as an embodiment of the method for adjusting the threshold in the NTN in the terminal, and the steps on the network device side can be separately used as an application The method for adjusting the threshold in the NTN in the network equipment, and the specific explanation of the steps of the method for adjusting the threshold in the NTN can refer to the above content, and will not be repeated here.

Multiple embodiments given in the above content can be implemented in combination and will not be repeated here.

To sum up, in the method for adjusting the threshold in the NTN provided by the embodiment of the present application, the terminal continues to measure adjacent cells after entering the state of any cell, and when the target cell is found, the terminal starts to record the state information. Optionally, the embodiment of the present application also provides two optional implementation manners for the specific time when the terminal records the state information.

Based on FIG. 3, FIG. 8 shows a schematic diagram of a method for adjusting the threshold in NTN provided by an exemplary embodiment of the present application. Before step 101 is performed, the method provided by the embodiment of the present application further includes the following steps:

Step 105: The network device configures the threshold for starting the neighbor cell measurement to the terminal.

Schematically, the neighbor cell measurement start threshold is used to indicate that the terminal starts radio resource management (Radio Resource Management, RRM) measurement when the threshold requirement of the neighbor cell measurement start threshold is met.

Wherein, the RRM measurement includes one of intra-frequency RRM measurement and inter-frequency RRM measurement.

Optionally, according to the foregoing content, the neighbor cell measurement start threshold configured by the network device to the terminal includes at least one of the following: the RSRP threshold of the original serving cell; the RSRQ threshold of the original serving cell; the end service time of the original serving cell.

Wherein, the relevant elaboration on the service end time of the original serving cell can refer to the foregoing content, and will not be repeated here.

Step 106: The terminal receives the neighbor cell measurement start threshold configured by the network device.

Step 107: If the threshold requirement of the neighbor cell measurement start threshold is met, the terminal starts RRM measurement for radio resource management.

Optionally, the threshold requirement includes at least one of the following conditions: the RSRP of the original serving cell is smaller than the neighbor cell measurement start threshold; the RSRQ of the original serving cell is smaller than the neighbor cell measurement start threshold; the current moment is before the end service time of the original serving cell.

According to the difference of the neighbor cell measurement startup threshold configured by the network device to the terminal, the embodiment of this application provides the following two optional implementation methods:

1. The start threshold of neighbor cell measurement includes the RSRP threshold of the original serving cell and/or the RSRP threshold of the original serving cell. RSRQ threshold.

Fig. 9 shows a schematic diagram of a method for adjusting a threshold in an NTN provided by an exemplary embodiment of the present application. Wherein, the network device configures the RSRP threshold of the original serving cell and/or the RSRQ threshold of the original serving cell to the terminal.

After receiving the RSRP threshold and/or RSRQ threshold configured by the network device, the terminal performs neighbor cell measurement according to the requirements of the measurement protocol specification. Subsequently, in the measurement results of the original serving cell, if the measurement value satisfies the corresponding threshold, for example, if the measurement value is less than the threshold or not greater than the threshold, the terminal starts the corresponding intra-frequency RRM measurement or inter-frequency RRM measurement.

In the process of neighbor cell measurement, the terminal still measures the original serving cell. If the RSRP/RSRQ measurement result of the original serving cell no longer satisfies the cell selection criteria, and the terminal has not found a suitable ), the terminal enters any cell selection state.

Subsequently, when the terminal determines the target cell to camp on through neighboring cell measurements, the terminal records the following information:

·The signal quality of the original serving cell when the terminal discovers the target cell to camp on.

Optionally, if the signal of the original serving cell cannot be measured, record the minimum value of the RSRP of the original serving cell as negative infinity.

Optionally, the moment when the terminal discovers the target cell to camp on is one of the following times:

The earliest time when the terminal detects the SSB signal of the target cell;

The earliest time when the terminal measures the signal quality of the target cell;

The earliest time when the terminal detects that the signal quality of the target cell meets the cell selection criteria.

·Cell status information of the target cell.

Optionally, the cell state information includes at least one of cell ID and frequency point information.

·The measurement start threshold of the neighbor cell currently used by the terminal.

Optionally, the neighbor cell measurement start threshold includes at least one of the following: an RSRP start threshold and an RSRQ start threshold.

·Cell status information of the original serving cell.

• The current position of the terminal.

Optionally, when the terminal is in the connected state, the state information is reported according to the request of the network device.

2. The start threshold of adjacent cell measurement includes the end service time of the original serving cell.

Fig. 10 shows a schematic diagram of a method for adjusting a threshold in NTN provided by an exemplary embodiment of the present application. Wherein, the network device configures the end service time of the original serving cell to the terminal.

After receiving the end service time of the original serving cell configured by the network device, the terminal performs neighbor cell measurement according to the requirements of the measurement protocol specification. Subsequently, in the measurement results of the original serving cell, if the measurement value satisfies the corresponding threshold, for example, if the measurement value is less than the threshold or not greater than the threshold, the terminal starts the corresponding intra-frequency RRM measurement or inter-frequency RRM measurement.

· The moment when the terminal discovers the target cell.

The earliest time when the terminal detects the SSB signal of the target cell;

·Cell status information of the target cell.

·The end service time of the original serving cell.

·Cell status information of the original serving cell.

• The current position of the terminal.

· The duration of the terminal being in any cell selection state.

Optionally, when the earliest time when the signal quality of the target cell to camp on meets the cell selection criteria is later than the time when the original serving cell loses coverage, the status information is recorded.

Schematically, in the embodiment of the present application, the steps on the terminal side can be separately used as an embodiment of the method for adjusting the threshold in the NTN in the terminal, and the steps on the network device side can be separately used in the NTN in the network device. The method for adjusting the threshold in , and the steps of the method for adjusting the threshold in NTN can refer to the above content, and will not be repeated here.

Schematically, the embodiments given above can all be implemented in combination, so details are not repeated here.

To sum up, the method for adjusting the threshold in the NTN provided by the embodiment of the present application uses the neighbor cell measurement start threshold configured by the network device for the terminal, so that the terminal can start RRM measurement when the threshold is met. Optionally, the embodiment of the present application also provides state information recording modes in two different situations of the neighboring cell measurement start threshold.

The following are the device embodiments of the present application. For the details not described in detail in the device embodiments, reference may be made to the corresponding records in the above method embodiments, which will not be repeated herein.

FIG. 11 shows a structural diagram of a device for adjusting a threshold in an NTN provided in an exemplary embodiment of the present application. The device includes:

The recording module 1120 is configured to record state information related to the threshold value for starting the measurement of the adjacent cell of the terminal, and the state information is used to adjust the threshold value for starting the measurement of the adjacent cell;

A reporting module 1140, configured to report status information.

Optionally, the recording module 1120 is configured to continue to discover the target resident cell through neighboring cell measurement after the target resident cell cannot be found and enters any cell selection state; when the target resident cell is found, record the neighboring cell measurement Status information related to the startup threshold.

Optionally, the state information related to the start threshold of neighbor cell measurement includes at least one of the following information: the signal quality of the original serving cell when the terminal discovers the target cell to camp on; the moment when the terminal discovers the target cell to camp on; The cell status information of the remaining cell and/or the original serving cell; the threshold for starting the measurement of the neighboring cell currently used by the terminal; the current location of the terminal; the end service time of the original serving cell; the duration of the terminal being in any cell selection state.

Optionally, the status information includes the signal quality of the original serving cell when the terminal discovers the target cell to camp on; the recording module 1120 is configured to record the reference signal received power of the original serving cell when the signal of the original serving cell cannot be measured The minimum value of RSRP is negative infinity.

Optionally, the moment when the terminal discovers the cell where the target resides includes at least one of the following: the earliest time when the terminal detects the synchronization signal block SSB signal of the cell where the target resides; the terminal detects that the SSB signal of the cell where the target resides exceeds the preset The earliest time for setting the threshold; the earliest time for the terminal to detect the signal quality of the target cell; the earliest time for the terminal to detect that the signal quality of the target cell satisfies the cell selection criterion.

Optionally, the cell state information includes: at least one of cell identity ID and frequency point information.

Optionally, the recording module 1120 is configured to record the status information related to the threshold value for starting the measurement of the neighboring cell when the earliest time when the signal quality of the target cell to reside on meets the cell selection criterion is later than the time when the original serving cell loses coverage .

Optionally, the device further includes a determining module 1160, configured to determine to enter any cell selection state when the measurement result of the original serving cell does not meet the cell selection criterion and the terminal does not find a target cell to camp on.

Optionally, the reporting module 1140 is configured to report status information according to the request of the network device when the terminal is in the connected state.

Optionally, the apparatus further includes an enabling module 1180, configured to receive a neighboring cell measurement enabling threshold configured by a network device; and enable radio resource management RRM measurement if the threshold requirement of the neighboring cell measuring enabling threshold is met.

Optionally, the neighbor cell measurement start threshold includes at least one of the following: the reference signal received power RSRP threshold of the original serving cell; the reference signal received quality RSRQ threshold of the original serving cell; the end service time of the original serving cell.

Optionally, the threshold requirement includes at least one of the following conditions: the reference signal received power RSRP of the original serving cell is less than the threshold for starting the measurement of neighboring cells; the received quality of reference signals RSRQ of the original serving cell is smaller than the threshold for starting the measurement of neighboring cells; Before the end service time of the serving cell.

FIG. 12 shows a structural diagram of an apparatus for adjusting a threshold in an NTN provided in an exemplary embodiment of the present application. The apparatus includes:

The receiving module 1220 is configured to receive status information reported by the terminal, where the status information is related to the starting threshold of the terminal's neighbor cell measurement;

An adjustment module 1240, configured to adjust the starting threshold of the terminal's neighbor cell measurement based on the status information.

Optionally, the status information includes the signal quality of the original serving cell when the terminal discovers the target cell to camp on; the receiving module 1220 is configured to receive the reference signal received power RSRP of the original serving cell reported by the terminal. The minimum value is negative infinity, negative infinity Recorded when the terminal cannot detect the signal of the original serving cell.

Optionally, the moment when the terminal discovers the cell where the target resides includes at least one of the following: the earliest time when the terminal detects the synchronization signal block SSB signal of the cell where the target resides; the terminal detects that the SSB signal of the cell where the target resides exceeds the preset The earliest time for setting the threshold; the earliest time for the terminal to detect the signal quality of the target cell; the earliest time for the terminal to detect that the signal quality of the target cell satisfies the cell selection criteria.

Optionally, the receiving module 1220 is configured to send a request to the terminal, and receive status information reported by the terminal when the terminal is in a connected state.

Optionally, the device further includes a configuration module 1260, configured to configure a neighbor cell measurement start threshold for the terminal, and the neighbor cell measurement start threshold is used to indicate that radio resource management is started when the threshold requirement of the neighbor cell measurement start threshold is met RRM measurement.

FIG. 13 shows a schematic structural diagram of a communication device (terminal or network device) provided by an exemplary embodiment of the present application. The communication device includes: a processor 1301 , a receiver 1302 , a transmitter 1303 , a memory 1304 and a bus 1305 .

The processor 1301 includes one or more processing cores, and the processor 1301 executes various functional applications and information processing by running software programs and modules.

The receiver 1302 and the transmitter 1303 can be implemented as a communication component, which can be a communication chip.

The memory 1304 is connected to the processor 1301 through the bus 1305 .

The memory 1304 may be used to store at least one instruction, and the processor 1301 is used to execute the at least one instruction, so as to implement each step of the method for determining the RAR reception window mentioned in the above method embodiments.

In addition, the memory 1304 can be realized by any type of volatile or non-volatile storage device or their combination, volatile or non-volatile storage device includes but not limited to: magnetic disk or optical disk, electrically erasable and programmable Electrically-Erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Static Random Access Memory (SRAM), Read-Only Memory (Read-Only Memory, ROM), magnetic memory, flash memory, programmable read-only memory (Programmable Read-Only Memory, PROM).

The embodiment of the present application also provides a terminal, the terminal includes a processor; the processor is used to record the state information related to the threshold value for starting the measurement of the adjacent cell of the terminal, and the state information is used to adjust the threshold value for starting the measurement of the adjacent cell; Report status information.

The embodiment of the present application also provides a network device, the network device includes a processor; the processor is used to receive the state information reported by the terminal, and the state information is related to the threshold value of the adjacent cell measurement start of the terminal; based on the state information, adjust the terminal's Neighbor cell measurement start threshold.

The embodiment of the present application also provides a computer-readable storage medium, in which a computer program is stored, and the computer program is used to be executed by a processor, so as to implement the method for adjusting the threshold in the NTN as described above.

The embodiment of the present application also provides a chip, the chip includes a programmable logic circuit and/or program instructions, and when the chip is running, it is used to implement the method for adjusting the threshold in the NTN as described above.

The embodiment of the present application also provides a computer program product or computer program, the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processor reads and executes the computer program from the computer-readable storage medium. instructions to implement the method for adjusting the threshold in the NTN as described above.

The above are only optional embodiments of the application, and are not intended to limit the application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the application shall be included in the protection of the application. within range.

Claims

A method for adjusting a threshold in NTN, characterized in that the method is applied to a terminal, and the method includes:

Recording state information related to the starting threshold of the adjacent cell measurement of the terminal, where the state information is used to adjust the starting threshold of the neighboring cell measurement;

Report the status information.
The method according to claim 1, wherein the recording state information related to the start threshold of the terminal's neighbor cell measurement includes:

After failing to find the target resident cell and entering any cell selection state, continue to discover the target resident cell through neighbor cell measurement;

When the target cell is found, record the state information related to the threshold value for starting the measurement of the neighboring cell.
The method according to claim 1 or 2, characterized in that the state information related to the threshold for starting the measurement of the neighboring cell includes at least one of the following information:

The signal quality of the original serving cell when the terminal discovers the target cell to camp on;

The moment when the terminal discovers the target cell;

Cell status information of the target cell and/or the original serving cell;

The neighbor cell measurement start threshold currently used by the terminal;

the current location of the terminal;

The end service time of the original serving cell;

The duration for which the terminal is in the arbitrary cell selection state.
The method according to claim 3, wherein the status information includes the signal quality of the original serving cell when the terminal discovers the target cell to camp on;

The recording of the state information related to the threshold value for starting the measurement of the neighboring cell includes:

If the signal of the original serving cell cannot be measured, record the minimum value of the reference signal received power RSRP of the original serving cell as negative infinity.
The method according to claim 3, wherein the moment when the terminal discovers the target cell to reside in includes at least one of the following:

The earliest time when the terminal detects the synchronization signal block SSB signal of the target cell;

The earliest time when the terminal detects that the SSB signal of the target cell exceeds the preset threshold;

The earliest time when the terminal detects the signal quality of the target cell;

The earliest time when the terminal detects that the signal quality of the target cell to camp on meets a cell selection criterion.
The method according to claim 3, wherein the cell status information includes: at least one of cell identification ID and frequency point information.
The method according to claim 2, wherein the recording the status information related to the threshold value for starting the measurement of the neighboring cell comprises:

When the earliest time when the signal quality of the target cell to camp on meets the cell selection criterion is later than the time when the original serving cell loses coverage, record the state information related to the threshold for starting the measurement of the neighboring cell.
The method according to claim 2, further comprising:

When the measurement result of the original serving cell does not meet the cell selection criteria and the terminal does not find the target cell to camp on, the terminal determines to enter the arbitrary cell selection state.
The method according to claim 1 or 2, wherein the reporting of the status information includes:

When the terminal is in the connected state, report the state information according to the request of the network device.
The method according to claim 1 or 2, characterized in that, before recording the state information related to the threshold value for starting the measurement of the adjacent cell of the terminal, the method further comprises:

Receive the neighbor cell measurement start threshold configured by the network device;

If the threshold requirement of the neighbor cell measurement start threshold is met, RRM measurement is started.
The method according to claim 10, wherein the neighboring cell measurement start threshold includes at least one of the following:

The reference signal received power RSRP threshold of the original serving cell;

The reference signal received quality RSRQ threshold of the original serving cell;

The end service time of the original serving cell.
The method according to claim 10, wherein the threshold requirement includes at least one of the following conditions:

The reference signal received power RSRP of the original serving cell is smaller than the neighbor cell measurement start threshold;

The reference signal reception quality RSRQ of the original serving cell is smaller than the neighbor cell measurement start threshold;

The current time is before the end service time of the original serving cell.
A method for adjusting a threshold in NTN, characterized in that the method is applied to network equipment, and the method includes:

receiving status information reported by the terminal, where the status information is related to the starting threshold of the terminal's neighbor cell measurement;

Adjusting the neighbor cell measurement start threshold of the terminal based on the status information.
The method according to claim 13, characterized in that the state information related to the threshold value for starting the neighbor cell measurement includes at least one of the following information:

The signal quality of the original serving cell when the terminal discovers the target cell to camp on;

The moment when the terminal discovers the target cell;

Cell status information of the target cell and/or the original serving cell;

The neighbor cell measurement start threshold currently used by the terminal;

the current location of the terminal;

The end service time of the original serving cell;

The duration for which the terminal is in the arbitrary cell selection state.
The method according to claim 14, wherein the status information includes the signal quality of the original serving cell when the terminal discovers the target cell to camp on;

The state information reported by the receiving terminal includes:

The minimum value of the reference signal received power RSRP of the original serving cell reported by the terminal is negative infinity, and the negative infinity is recorded when the terminal cannot measure the signal of the original serving cell.
The method according to claim 14, wherein the moment when the terminal discovers the target cell where the terminal resides includes at least one of the following:

The earliest time when the terminal detects the synchronization signal block SSB signal of the target cell;

The earliest time when the terminal detects that the SSB signal of the target cell exceeds the preset threshold;

The earliest time when the terminal detects the signal quality of the target cell;

The earliest time when the terminal detects that the signal quality of the target cell to camp on meets a cell selection criterion.
The method according to claim 14, wherein the cell status information includes: at least one of cell identification ID and frequency point information.
The method according to claim 13, wherein the state information reported by the receiving terminal includes:

Sending a request to the terminal, and receiving the state information reported by the terminal when the terminal is in a connected state.
The method according to claim 13, further comprising:

Configuring a neighbor cell measurement start threshold for the terminal, where the neighbor cell measurement start threshold is used to indicate that radio resource management RRM measurement is started if the threshold requirement of the neighbor cell measurement start threshold is met.
The method according to claim 19, wherein the neighboring cell measurement start threshold includes at least one of the following:

The reference signal received power RSRP threshold of the original serving cell;

The reference signal received quality RSRQ threshold of the original serving cell;

The end service time of the original serving cell.
The method according to claim 19, wherein the threshold requirement includes at least one of the following conditions:

The reference signal received power RSRP of the original serving cell is smaller than the neighbor cell measurement start threshold;

The reference signal reception quality RSRQ of the original serving cell is smaller than the neighbor cell measurement start threshold;

The current time is before the end service time of the original serving cell.
A device for adjusting threshold in NTN, characterized in that the device comprises:

A recording module, configured to record state information related to the threshold value for starting the measurement of the adjacent cell of the terminal, and the state information is used to adjust the threshold value for starting the measurement of the adjacent cell;

A reporting module, configured to report the state information.
A device for adjusting threshold in NTN, characterized in that the device comprises:

A receiving module, configured to receive status information reported by the terminal, where the status information is related to the starting threshold of the terminal's neighbor cell measurement;

An adjusting module, configured to adjust the starting threshold of the terminal's neighbor cell measurement based on the state information.
A terminal, characterized in that the terminal includes a processor;

The processor is configured to record state information related to the starting threshold of the adjacent cell measurement of the terminal, and the state information is used to adjust the starting threshold of the neighboring cell measurement;

Report the status information.
A network device, characterized in that the network device includes a processor;

The processor is configured to receive status information reported by the terminal, where the status information is related to the starting threshold of the terminal's neighbor cell measurement;

Adjusting the neighbor cell measurement start threshold of the terminal based on the status information.
A computer-readable storage medium, characterized in that a computer program is stored in the storage medium, and the computer program is used to be executed by a processor to implement the NTN according to any one of claims 1 to 21. How to adjust the threshold.
A kind of chip, it is characterized in that, described chip comprises programmable logic circuit and/or program instruction, when described chip runs, is used for realizing as described in any one of claim 1 to 21 adjustment threshold method.
A computer program product or computer program, characterized in that the computer program product or computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium, and the processor reads the computer-readable storage medium from the computer-readable storage medium And execute said computer instruction to realize the method for adjusting threshold in NTN as described in any one of claims 1 to 21.