A cell reselection method, a cell reselection device, and a storage medium

Abstract

This disclosure relates to a cell reselection method, a cell reselection apparatus, and a storage medium. The cell reselection method, executed by a terminal, includes: receiving cell reselection parameter indication information sent by a network device, the cell reselection parameter indication information indicating one or more cell reselection parameters; and performing cell reselection based on the cell reselection parameters. This disclosure enables the determination and execution of a cell reselection scheme when multiple cell reselection schemes are available.

Description

Technical Field

[0001] This disclosure relates to the field of wireless communication technology, and in particular to a cell reselection method, a cell reselection device, and a storage medium. Background Technology

[0002] In related communication technologies, communication based on terrestrial networks (TN) is supported. When communicating based on terrestrial networks, terminals mainly perform cell reselection based on the S criterion and the R criterion. For example, when performing cell reselection, the terminal can measure the service quality of neighboring cells based on the signal quality of the serving cell, rank the measurement results of neighboring cells based on the R criterion, and then perform reselection of the target cell based on the measurement results and ranking results.

[0003] In next-generation communication technologies, non-terrestrial networks (NTNs) are introduced, which rely on satellite communication. When satellites move or terminals move to the edge of satellite coverage, requiring cell reselection, the near-far advantage is not particularly significant, leading to delayed cell reselection and repeated reselection between different cells. Therefore, NTN networks introduce multiple cell reselection schemes to avoid delayed reselection and repeated reselection between different cells. However, determining the appropriate cell reselection scheme from among these options remains a problem to be solved. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this disclosure provides a cell reselection method, a cell reselection device, and a storage medium.

[0005] According to a first aspect of the present disclosure, a cell reselection method is provided, the method being executed by a terminal, comprising:

[0006] The system receives cell reselection parameter indication information sent by a network device, the cell reselection parameter indication information being used to indicate one or more cell reselection parameters; and performs cell reselection based on the cell reselection parameters.

[0007] In one embodiment, the cell reselection parameters include the service time information of the serving cell; cell reselection based on the cell reselection parameters includes: measuring neighboring cells based on the service time information of the serving cell, and performing cell reselection based on the measurement results.

[0008] In one embodiment, the cell reselection parameters include the service time information of the serving cell and the parameter information for cell reselection using the S criterion. The parameter information for cell reselection using the S criterion includes parameters for calculating the cell selection level and cell selection quality, as well as the serving cell signal quality threshold value.

[0009] Cell reselection is performed based on the cell reselection parameters, including: measuring neighboring cells based on the service time information and / or signal quality of the serving cell, and performing cell reselection based on the measurement results;

[0010] The measurement of neighboring cells based on the signal quality of the serving cell includes: triggering the measurement of neighboring cells when the signal quality of the serving cell is greater than the signal quality threshold of the serving cell.

[0011] In one embodiment, the cell reselection parameters include the service time information of neighboring cells; cell reselection based on the cell reselection parameters includes: determining the target cell based on the service time information of neighboring cells.

[0012] In one embodiment, the cell reselection parameters include service time information of neighboring cells and parameter information for cell reselection using the R criterion. The parameter information for cell reselection using the R criterion includes values ​​determined by cell signal quality, cell reselection hysteresis, and temporary offset. Cell reselection is performed based on the cell reselection parameters, including: determining a target cell based on the service time information of neighboring cells and / or the R criterion, and performing cell reselection based on the determined target cell.

[0013] In one embodiment, the cell reselection parameter indication information is used to indicate a cell reselection parameter, which is parameter information for cell reselection using the R criterion; cell reselection is performed based on the cell reselection parameter, including: determining a target cell based on the R criterion, and performing cell reselection based on the determined target cell.

[0014] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of the serving cell, which include at least one of the distance between the serving cell and the terminal, and the geographical location of the serving cell; cell reselection is performed based on the cell reselection parameters, including: measuring neighboring cells based on the terminal's location information and the location parameters of the serving cell, and performing cell reselection based on the measurement results.

[0015] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of the serving cell and parameter information for cell reselection using the S criterion. The location parameters of the serving cell include at least one of the distance between the serving cell and the terminal and the geographical location of the serving cell. Cell reselection based on the cell reselection parameters includes: measuring neighboring cells based on the location information of the terminal and at least one of the location parameters of the serving cell and the signal quality of the serving cell, and performing cell reselection based on the measurement results.

[0016] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of the serving cell and the parameter information for cell reselection using the S criterion. The location parameters of the serving cell include at least one of the distance between the serving cell and the terminal and the geographical location of the serving cell. Based on the cell reselection parameters, cell reselection is performed, including: measuring neighboring cells according to the signal quality of the serving cell and performing cell reselection based on the measurement results.

[0017] In one embodiment, the cell reselection parameter indication information is used to indicate a cell reselection parameter, which is parameter information for cell reselection using the S criterion; cell reselection is performed based on the cell reselection parameter, including: measuring neighboring cells according to the signal quality of the serving cell, and performing cell reselection based on the measurement results.

[0018] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of neighboring cells, which include at least one of the distance between the neighboring cell and the terminal, and the geographical location of the neighboring cell; cell reselection is performed based on the cell reselection parameters, including: determining a target cell based on the terminal's location information and the location parameters of the neighboring cells, and performing cell reselection based on the determined target cell.

[0019] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of neighboring cells and the parameter information for cell reselection using the R criterion; cell reselection is performed based on the cell reselection parameters, including: determining a target cell based on the location information of the terminal and at least one of the location parameters of neighboring cells and the R criterion, and performing cell reselection based on the determined target cell.

[0020] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of neighboring cells and the parameter information for cell reselection using the R criterion; cell reselection is performed based on the cell reselection parameters, including: determining a target cell based on the R criterion, and performing cell reselection based on the determined target cell.

[0021] In one embodiment, the cell reselection method further includes: receiving a signaling indication, wherein the signaling indication is used to indicate one or more cell reselection parameters among the cell reselection parameters indicated by the cell reselection parameter indication information;

[0022] Cell reselection is performed based on the cell reselection parameters, including: performing neighbor cell measurement and / or determining the target cell based on one or more cell reselection parameters indicated by the signaling indication.

[0023] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include multiple cell reselection parameters; performing cell reselection based on the cell reselection parameters includes: selecting one or more cell reselection parameters from the multiple cell reselection parameters indicated by the cell reselection parameter indication information based on the configuration information of the terminal, and performing cell reselection.

[0024] In one embodiment, the cell reselection parameter indication information includes the service time information of the serving cell, the location parameters of the serving cell, the service time information of the neighboring cells, the location parameters of the neighboring cells, the parameter information for cell reselection using the S criterion, and the parameter information for cell reselection using the R criterion.

[0025] The cell reselection based on the cell reselection parameters includes: performing cell reselection based on the S criterion and the R criterion.

[0026] According to a second aspect of the present disclosure, a cell reselection method is provided, the method being executed by a network device, the method comprising: sending cell reselection parameter indication information, the cell reselection parameter indication information being used to indicate one or more cell reselection parameters.

[0027] In one embodiment, the cell reselection parameters include at least one of the following:

[0028] Information on the service hours provided by the service community;

[0029] Location parameters of the serving cell;

[0030] Information on service hours provided by neighboring communities;

[0031] Location parameters of neighboring communities;

[0032] The parameter information for cell reselection using the S-criteria includes parameters for calculating cell selection level and cell selection quality, as well as a serving cell signal quality threshold; and

[0033] The parameters for cell reselection using the R criterion include the cell signal quality value, cell reselection hysteresis value, and temporary offset value.

[0034] In one embodiment, the cell reselection method further includes:

[0035] Sending a signaling indication, wherein the signaling indication is used to indicate one or more cell reselection parameters among the cell reselection parameters indicated by the cell reselection parameter indication information.

[0036] According to a third aspect of the present disclosure, a cell reselection device is provided, comprising:

[0037] The receiving unit is configured to receive cell reselection parameter indication information sent by the network device, wherein the cell reselection parameter indication information is used to indicate one or more cell reselection parameters; the processing unit is configured to perform cell reselection based on the cell reselection parameters.

[0038] In one embodiment, the cell reselection parameters include the service time information of the serving cell; the processing unit measures neighboring cells based on the service time information of the serving cell, and performs cell reselection based on the measurement results.

[0039] In one embodiment, the cell reselection parameters include the service time information of the serving cell and the parameter information for cell reselection using the S criterion. The parameter information for cell reselection using the S criterion includes parameters for calculating the cell selection level and cell selection quality, as well as a serving cell signal quality threshold. The processing unit measures neighboring cells based on the service time information and / or the serving cell signal quality, and performs cell reselection based on the measurement results. The measurement of neighboring cells based on the serving cell signal quality includes triggering the measurement of neighboring cells if the serving cell signal quality is greater than the serving cell signal quality threshold.

[0040] In one embodiment, the cell reselection parameters include the service time information of neighboring cells; the processing unit determines the target cell based on the service time information of neighboring cells, and performs cell reselection based on the determined target cell.

[0041] In one embodiment, the cell reselection parameters include the service time information of neighboring cells and the parameter information for cell reselection using the R criterion. The parameter information for cell reselection using the R criterion includes values ​​determined by cell signal quality, cell reselection hysteresis, and temporary offset. The processing unit determines the target cell based on the service time information of neighboring cells and / or the R criterion, and performs cell reselection based on the determined target cell.

[0042] In one embodiment, the cell reselection parameter indication information is used to indicate a cell reselection parameter, which is parameter information for cell reselection using the R criterion; the processing unit determines the target cell based on the R criterion and performs cell reselection based on the determined target cell.

[0043] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of the serving cell, which include at least one of the distance between the serving cell and the terminal, and the geographical location of the serving cell; the processing unit measures neighboring cells based on the terminal's location information and the location parameters of the serving cell, and performs cell reselection based on the measurement results.

[0044] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of the serving cell and the parameter information for cell reselection using the S criterion. The location parameters of the serving cell include at least one of the distance between the serving cell and the terminal and the geographical location of the serving cell. The processing unit measures neighboring cells based on the location information of the terminal and at least one of the location parameters of the serving cell and the signal quality of the serving cell, and performs cell reselection based on the measurement results.

[0045] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of the serving cell and the parameter information for cell reselection using the S criterion. The location parameters of the serving cell include at least one of the distance between the serving cell and the terminal and the geographical location of the serving cell. The processing unit measures neighboring cells based on the signal quality of the serving cell and performs cell reselection based on the measurement results.

[0046] In one embodiment, the cell reselection parameter indication information is used to indicate a cell reselection parameter, which is parameter information for cell reselection using the S criterion; the processing unit measures neighboring cells based on the signal quality of the serving cell and performs cell reselection based on the measurement results.

[0047] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of neighboring cells, which include at least one of the distance between the neighboring cell and the terminal, and the geographical location of the neighboring cell; the processing unit determines the target cell based on the terminal's location information and the location parameters of the neighboring cells, and performs cell reselection based on the determined target cell.

[0048] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of neighboring cells and the parameter information for cell reselection using the R criterion; the processing unit determines the target cell based on the location information of the terminal and at least one of the location parameters of neighboring cells, and the R criterion, and performs cell reselection based on the determined target cell.

[0049] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of neighboring cells and the parameter information for cell reselection using the R criterion; the processing unit determines the target cell based on the R criterion and performs cell reselection based on the determined target cell.

[0050] In one embodiment, the cell reselection method further includes: receiving a signaling indication, wherein the signaling indication is used to indicate one or more cell reselection parameters among the cell reselection parameters indicated by the cell reselection parameter indication information;

[0051] The processing unit performs neighbor cell measurement and / or determines the target cell based on one or more cell reselection parameters indicated by the signaling instruction.

[0052] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include multiple cell reselection parameters; the processing unit selects one or more cell reselection parameters from the multiple cell reselection parameters indicated by the cell reselection parameter indication information based on the configuration information of the terminal, and performs cell reselection.

[0053] In one embodiment, the cell reselection parameter indication information includes the service time information of the serving cell, the location parameters of the serving cell, the service time information of the neighboring cells, the location parameters of the neighboring cells, the parameter information for cell reselection using the S criterion, and the parameter information for cell reselection using the R criterion.

[0054] The processing unit performs cell reselection based on the S criterion and the R criterion.

[0055] According to a fourth aspect of the present disclosure, a cell reselection apparatus is provided, the apparatus comprising: a transmitting unit configured to transmit cell reselection parameter indication information, the cell reselection parameter indication information being used to indicate one or more cell reselection parameters.

[0056] In one embodiment, the cell reselection parameters include at least one of the following:

[0057] Information on the service hours provided by the service community;

[0058] Location parameters of the serving cell;

[0059] Information on service hours provided by neighboring communities;

[0060] Location parameters of neighboring communities;

[0061] The parameter information for cell reselection using the S-criteria includes parameters for calculating cell selection level and cell selection quality, as well as a serving cell signal quality threshold. The parameter information for cell reselection using the R-criteria includes values ​​for cell signal quality, cell reselection hysteresis, and temporary offset.

[0062] Parameter information for cell reselection using the R criterion.

[0063] In one embodiment, the transmitting unit is further configured to:

[0064] Sending a signaling indication, wherein the signaling indication is used to indicate one or more cell reselection parameters among the cell reselection parameters indicated by the cell reselection parameter indication information.

[0065] According to a fifth aspect of the present disclosure, a cell reselection device is provided, comprising:

[0066] processor;

[0067] Memory used to store processor-executable instructions;

[0068] The processor is configured to execute the method described in the first aspect or any embodiment of the first aspect.

[0069] According to a sixth aspect of the present disclosure, a cell reselection device is provided, comprising:

[0070] processor;

[0071] Memory used to store processor-executable instructions;

[0072] The processor is configured to execute the method described in the second aspect or any one of the embodiments of the second aspect.

[0073] According to a seventh aspect of the present disclosure, a computer-readable storage medium is provided for storing instructions that, when executed, cause the method described in the first aspect or any embodiment of the first aspect to be performed.

[0074] According to an eighth aspect of the present disclosure, a computer-readable storage medium is provided for storing instructions that, when executed, cause the method described in the second aspect or any embodiment of the second aspect to be performed.

[0075] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: the terminal receives cell reselection parameter indication information sent by the network device, and performs cell reselection based on the cell reselection parameter indication information, wherein the cell reselection parameter indication information is used to indicate one or more cell reselection parameters. Therefore, this disclosure enables the determination of a cell reselection scheme and the performance of cell reselection in the face of multiple cell reselection schemes.

[0076] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0077] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0078] Figure 1 This is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0079] Figure 2 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0080] Figure 3 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0081] Figure 4 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0082] Figure 5 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0083] Figure 6 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0084] Figure 7 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0085] Figure 8 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0086] Figure 9 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0087] Figure 10 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0088] Figure 11 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0089] Figure 12 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0090] Figure 13 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0091] Figure 14 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0092] Figure 15 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0093] Figure 16 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0094] Figure 17 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0095] Figure 18 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment.

[0096] Figure 19 This is a block diagram illustrating a cell reselection device according to an exemplary embodiment.

[0097] Figure 20 This is a block diagram illustrating a cell reselection device according to an exemplary embodiment.

[0098] Figure 21 This is a block diagram illustrating an apparatus for cell reselection according to an exemplary embodiment.

[0099] Figure 22 This is a block diagram illustrating an apparatus for cell reselection according to an exemplary embodiment. Detailed Implementation

[0100] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0101] The cell reselection method provided in this disclosure can be applied to... Figure 1 The wireless communication system shown. (See attached image) Figure 1 As shown, this wireless communication system includes a terminal and a network device. The terminal and the network device send and receive information through wireless resources.

[0102] Understandable, Figure 1 The wireless communication system shown is for illustrative purposes only. A wireless communication system may also include other network devices, such as core network equipment, wireless relay equipment, and wireless backhaul equipment. Figure 1 Not shown in the diagram. This disclosure does not limit the number of network devices and terminals included in the wireless communication system.

[0103] It is further understood that the wireless communication system of this disclosure is a network providing wireless communication functionality. The wireless communication system can employ different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and carrier sense multiple access with collision avoidance. Based on factors such as capacity, speed, and latency, networks can be categorized as 2G (generation) networks, 3G networks, 4G networks, or future evolution networks, such as 5G networks. 5G networks can also be referred to as New Radio (NR). For ease of description, this disclosure may sometimes simply refer to the wireless communication network as a network.

[0104] Furthermore, the network device involved in this disclosure can also be referred to as a wireless access network device. This wireless access network device can be: a base station, an evolved Node B (EB), a home base station, an access point (AP) in a Wireless Fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), etc. It can also be a gNB in ​​an NR system, or a component or part of a base station. When it is a vehicle-to-everything (V2X) communication system, the network device can also be an in-vehicle device. It should be understood that the specific technologies and device forms used in the embodiments of this disclosure are not limited.

[0105] Furthermore, the terminal involved in this disclosure can also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., and is a device that provides voice and / or data connectivity to a user. For example, the terminal can be a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminals include: smartphones (Mobile Phones), pocket personal computers (PPCs), handheld computers, personal digital assistants (PDAs), laptops, tablets, wearable devices, or in-vehicle devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be an in-vehicle device. It should be understood that the embodiments of this disclosure do not limit the specific technology or specific device form adopted by the terminal.

[0106] Cell selection or reselection occurs during communication between a terminal and network equipment. This disclosure primarily applies to the process of cell selection or reselection. In related technologies, such as 5G NR, cell selection or reselection involves S-criteria and R-criteria.

[0107] Among them, the S criterion mainly refers to S rxlev > 0 and S qual > 0. Where S rxlev Select the level for the cell, S qual Select quality for the cell. The cell selected or reselected by the terminal must meet the S criterion.

[0108] Among them, Srxlev Based on the reference signal received power (RSRP) value (Q) of the measurement cell rxlevmeas The minimum received level (Q) required in the cell rxlevmin ), minimum received level offset (Q rxlevminoffset ), cell power-related parameters (P compensation ), temporarily applied to the cell offset value (Q) offsettemp ) is determined. Where P compensation Used to penalize UEs that do not reach the cell's maximum power. Compensation =max(p Max – p uMax , 0)(dB), where p Max The maximum uplink transmit power allowed for the UE in the cell, p uMax This represents the maximum uplink transmit power supported by the UE. See the formula below.

[0109] S rxlev = Q rxlevmeas – (Q rxlevmin + Q rxlevminoffset )– P compensation - Q offsettemp

[0110] S qual Based on the RSRQ value (Qqualmeas) of the measured cell, the minimum received signal quality (Q qualmin Minimum received signal quality offset (Q) qualminoffset ), Q offsettemp Confirmed. See the formula below.

[0111] S qual = Q qualmeas – (Q qualmin + Q qualminoffset ) - Q offsettemp

[0112] Furthermore, S rxlev S qual Q rxlevmeas Q rxlevmin Q rxlevminoffset Q offsettemp Qqualmeasp, Q qualmin Q qualminoffset C ompensation See Table 1 below.

[0113] Table 1

[0114]

[0115]

[0116]

[0117] For measurements of neighboring cells at the same frequency, if the serving cell satisfies S rxlev > S IntraSearchP If the terminal can choose not to measure neighboring cells, then it can choose not to; otherwise, the terminal needs to measure neighboring cells. Where S... IntraSearchP This is the RSRP signal level threshold value used to initiate co-frequency measurements.

[0118] For inter-frequency neighbor cell measurements, if the frequency priority of the neighbor cell is less than or equal to the frequency priority of the serving cell, then if the serving cell's S... rxlev > S nonIntraSearchP If the terminal can choose not to measure neighboring cells, then it can choose not to; otherwise, the terminal needs to measure neighboring cells. Where S... nonIntraSearchP This is the RSRP signal level threshold value used to initiate inter-frequency measurements.

[0119] Among them, the R criterion mainly refers to:

[0120] Rs = Q meas,s +Q hyst –Q offsettemp Rn = Q meas,n -Q offset - Q offsettemp

[0121] Where Rs is the R value of the serving cell, Rn is the R value of the neighboring cells, and Q... meas,s For the RSRP measurement of the serving cell, Q meas,n Q is the RSRP measurement value of the neighboring cell. hyst Q is the cell reselection hysteresis value. offsettemp This is a temporary offset value; Q offset The values ​​are offsets, as detailed in Table 2 below.

[0122] Table 2

[0123]

[0124] When the terminal measures neighboring cells, it calculates the R value of each cell according to the above R criterion, and the terminal only sorts neighboring cells that meet the S criterion according to the R criterion.

[0125] The cell reselection methods based on the S and R criteria described above are mainly applicable to TN networks. However, with the development of communication technology, NTN networks have been introduced. The following problems exist in NTN networks:

[0126] (1) When a satellite performs a gateway link switch or a service link switch, it will cause the terminals in the cell to reselect the cell. During a feeder link switch / service link switch, the network-side equipment communicating with the terminal may suddenly stop providing service, such as the gNB suddenly becoming unavailable. Therefore, it is possible that the terminal does not start neighbor cell measurement, but the serving cell suddenly becomes unavailable, resulting in the terminal reselecting the cell too late. In related technologies, to address this problem, information is provided to the terminal to assist it in reselecting the cell. For example, the terminal can be provided with the time information of when the serving cell can provide service / stop service, triggering the terminal to measure neighbor cells. Another example is the time information of the serving neighbor cells to assist the terminal in selecting a suitable neighbor cell;

[0127] (2) For TN, the terminal can determine that it is at the cell edge by the significant difference between its measured RSRP and the RSRP of the cell center, thereby performing neighbor cell measurement and cell reselection. However, for NTN, when the satellite moves or the terminal moves to a location that requires cell reselection, there is no significant near-far benefit like in TN, which may result in late cell reselection and repeated reselection between different cells. To solve this problem, it is proposed that the terminal use its location information to perform cell reselection. For example, when the terminal is located at the geographical cell edge, the terminal performs cell reselection.

[0128] Therefore, for NTN, there are several cell selection / reselection schemes:

[0129] 1) Cell reselection based on S-criteria and R-criteria;

[0130] 2) Cell reselection based on time information

[0131] 3) Cell reselection based on location information (location / distance information)

[0132] Given the various cell reselection methods introduced by NTN, the terminal needs to determine which cell reselection method to use for cell reselection.

[0133] In view of this, embodiments of the present disclosure provide a cell reselection method, wherein the terminal determines the cell reselection method among multiple cell reselection methods based on one or more cell reselection parameters configured by the network device.

[0134] In one embodiment, the network device can send indication information to indicate one or more cell reselection parameters configured for a terminal. For ease of description in this disclosure, the indication information sent by the network device to indicate one or more cell reselection parameters configured for the terminal is referred to as cell reselection parameter indication information. This cell reselection parameter indication information indicates one or more cell reselection parameters, which may include at least one of the following: parameter information for cell reselection using the S criterion, parameter information for cell reselection using the R criterion, time parameter information for service provided by the serving cell and / or neighboring cells, and location parameter information of the serving cell and / or neighboring cells.

[0135] Among them, the parameter information for cell reselection using the S criterion includes calculating the cell selection level (Srxlev) and the cell selection quality (S). qual The parameters for Srxlev include the serving cell signal quality threshold. For example, the parameters for calculating Srxlev may include Qrxlevmeas, Qrxlevmin, Qrxlevminoffset, Pcompensation, and Qoffsettemp. The parameters for calculating Squal may include Qqualmeas, Qqualmin, Qqualminoffset, and Qoffsettemp. When applying the S criterion for cell reselection, S must be satisfied. rxlev > 0 and S qual > 0.

[0136] When applying the S-criterion for cell reselection, neighboring cells can be measured based on the serving cell's signal quality, and cell reselection can be performed based on the measurement results. Measuring neighboring cells based on the serving cell's signal quality includes triggering measurements of neighboring cells when the serving cell's signal level exceeds a serving cell level threshold. For example, for measurements of co-frequency neighboring cells, if the serving cell meets the S-criterion... rxlev > S IntraSearchP If the terminal can choose not to measure neighboring cells, then it can choose not to; otherwise, the terminal needs to measure neighboring cells. Where S... IntraSearchP This is the RSRP signal level threshold value used to initiate co-frequency measurements.

[0137] For inter-frequency neighbor cell measurements, if the frequency priority of the neighbor cell is less than or equal to the frequency priority of the serving cell, then if the serving cell's S... rxlev > S nonIntraSearchP If the terminal can choose not to measure neighboring cells, then it can choose not to; otherwise, the terminal needs to measure neighboring cells. Where S... nonIntraSearchP This is the RSRP signal level threshold value used to initiate inter-frequency measurements.

[0138] In the cell reselection method provided in this embodiment, the parameter information for cell reselection using the R criterion includes the values ​​of cell signal quality, cell reselection hysteresis, and temporary offset.

[0139] In the cell reselection method provided in this embodiment, the time parameter information for the serving cell and / or neighboring cells providing services may include the time information for when the serving cell can provide services / stops services, as well as the time information for neighboring cells that may provide services to the terminal.

[0140] In the cell reselection method provided in this embodiment, the location parameter information of the serving cell and / or neighboring cells includes the distance between the serving cell / neighboring cell and the terminal, and the location of the serving cell / neighboring cell. It may also include a distance threshold value and the geographical location range provided by the serving cell.

[0141] In the cell reselection method provided in this embodiment, the terminal can receive cell reselection parameter indication information sent by the network device and perform cell reselection based on the cell reselection parameter indication information. When the terminal performs cell reselection based on the cell reselection parameters indicated by the cell reselection parameter indication information, it may include measuring neighboring cells or determining the target cell. That is, in this embodiment, the terminal can determine whether to measure neighboring cells and / or determine the target cell based on the cell reselection parameter indication information.

[0142] It is understood that in this embodiment of the present disclosure, when the terminal performs cell reselection based on the cell reselection parameter indication information, it may determine whether to measure neighboring cells or not. The following embodiments are mainly based on the description of measuring neighboring cells. Those skilled in the art will understand that it is also possible not to measure neighboring cells.

[0143] Furthermore, in the cell reselection method provided in this embodiment, the terminal's measurement of neighboring cells may include measuring the signal quality of the neighboring cells, and / or calculating the distance to the neighboring cells, and / or reading the system information of the neighboring cells. It may also include one or more of the following: obtaining the neighboring cell identifier (ID), obtaining cell system messages, and measuring cell signal quality.

[0144] Figure 2 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 2 As shown, the cell reselection method is executed by the network device and includes the following steps.

[0145] In step S11, cell reselection parameter indication information is sent, which is used to indicate one or more cell reselection parameters.

[0146] In the cell reselection method provided in this embodiment, the cell reselection parameters indicated by the cell reselection parameter indication information include at least one of the following: service time information of the serving cell, location parameters of the serving cell, service time information of neighboring cells, location parameters of neighboring cells, parameter information for cell reselection using the S criterion, and parameter information for cell reselection using the R criterion.

[0147] In the cell reselection method provided in this embodiment, the cell reselection parameter indication information sent by the network device may be, for example, system information. This system information includes cell reselection parameters used to instruct the terminal to perform cell reselection.

[0148] In the cell reselection method provided in this embodiment, the terminal receives cell reselection parameter indication information sent by the network device, and performs cell reselection based on the cell reselection parameter indication information, thereby determining the scheme for cell reselection among multiple cell reselection methods.

[0149] Figure 3 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 3 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0150] In step S21, cell reselection parameter indication information sent by the network device is received. The cell reselection parameter indication information is used to indicate one or more cell reselection parameters.

[0151] In step S22, cell reselection is performed based on cell reselection parameters.

[0152] In the cell reselection method provided in this embodiment, the terminal receives cell reselection parameter indication information sent by the network device. This cell reselection parameter indication information indicates one or more cell reselection parameters. The terminal performs cell reselection based on the cell reselection parameter indication information indicating one or more cell reselection parameters, thereby determining the scheme used for cell reselection among multiple cell reselection methods.

[0153] In the cell reselection method provided in this embodiment, the terminal can determine different cell reselection methods based on the different cell reselection parameters indicated by the cell reselection parameter indication information.

[0154] In the cell reselection method provided in this embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the service time information of the serving cell / neighboring cell, and one or more of the parameter information for cell reselection using the S criterion and the parameter information for cell reselection using the R criterion.

[0155] In one implementation, the cell reselection parameter indication information includes cell reselection parameters such as the service time information of the serving cell. The terminal can measure neighboring cells based on the service time information of the serving cell. That is, if the network device is configured with parameters related to the service time information, the terminal determines whether to perform neighboring cell measurement based on this time information.

[0156] Figure 4 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 4 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0157] In step S31, if the cell reselection parameter indication information includes the service time information of the serving cell, the terminal measures the neighboring cells based on the service time information of the serving cell, and performs cell reselection based on the measurement results.

[0158] In the cell reselection method provided in this disclosure, the service time information of the serving cell may include the time information when the serving cell can provide service and / or stops providing service, or it can be understood as the time information of neighboring cells that may provide service to the terminal. When determining to measure a neighboring cell based on the service time information of the serving cell, the conditions of the service time information of the serving cell need to be met. For example, if the time information of the serving cell is a duration (timer), the terminal determines whether to measure the neighboring cell after the timer expires. If the time information of the serving cell is a time (absolute time, UTC), the terminal determines to measure the neighboring cell when that time is reached.

[0159] In this embodiment of the disclosure, the cell reselection parameter indication information indicates cell reselection parameters including the service time information of the serving cell. This information may only indicate the service time information of the serving cell, or it may indicate both the service time information of the serving cell and other information. For example, it may include parameter information for applying the S criterion to perform cell reselection.

[0160] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the service time information of the serving cell and the parameter information for cell reselection using the S criterion. The terminal can measure neighboring cells based on the service time information of the serving cell and / or the signal quality of the serving cell.

[0161] In this context, measuring neighboring cells based on the serving cell's signal quality can be understood as triggering measurements of neighboring cells when the serving cell's signal quality exceeds a serving cell signal quality threshold. That is, when measuring neighboring cells based on the serving cell's signal quality, the serving cell satisfies S... rxlev > SIntraSearchP .

[0162] Figure 5 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 5 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0163] In step S41, if the cell reselection parameter indication information includes the service time information of the serving cell and the parameter information for cell reselection using the S criterion, then the terminal measures the neighboring cell based on the service time information of the serving cell and / or the signal quality of the serving cell, and performs cell reselection based on the measurement results.

[0164] In the cell reselection method provided in this disclosure, when a terminal measures neighboring cells based on the signal quality of the serving cell, it can determine whether to measure neighboring cells based on a serving cell signal quality threshold. That is, for co-frequency neighboring cell measurements, if the serving cell meets the S threshold... rxlev > S IntraSearchP If the terminal can choose not to measure neighboring cells, then it can choose not to; otherwise, the terminal needs to measure neighboring cells. Where S... IntraSearchP This is the RSRP signal level threshold used to initiate in-frequency measurements. For inter-frequency neighbor cell measurements, if the frequency priority of the neighbor cell is less than or equal to the frequency priority of the serving cell, then if the serving cell's S... rxlev > S nonIntraSearchP If the terminal can choose not to measure neighboring cells, then it can choose not to; otherwise, the terminal needs to measure neighboring cells. Where S... nonIntraSearchP This is the RSRP signal level threshold value used to initiate inter-frequency measurements.

[0165] In the cell reselection method provided in this disclosure, the service time information of the serving cell may include the time information when the serving cell can provide service / stops service, or it can be understood as the time information of neighboring cells that may provide service to the terminal. When determining to measure a neighboring cell based on the service time information of the serving cell, the conditions of the service time information of the serving cell need to be met. For example, if the time information of the serving cell is a duration (timer), the terminal determines whether to measure the neighboring cell after the timer expires. If the time information of the serving cell is a moment (absolute time, UTC), the terminal determines to measure the neighboring cell when that moment is reached.

[0166] In this embodiment of the disclosure, if the cell reselection parameter indication information includes the service time information of the serving cell and the parameter information for cell reselection using the S criterion, then neighboring cells can be measured based on any one or more of the service time information and the signal quality of the serving cell. That is, on the one hand, neighboring cells can be measured only if both the service time information and the signal quality threshold of the serving cell are satisfied. Alternatively, neighboring cells can be measured only if any one of the service time information and the signal quality threshold of the serving cell is satisfied.

[0167] For example, in one instance, if the cell reselection parameter indication information includes the serving cell's service time information and the parameter information for applying the S criterion to cell reselection, then the terminal can measure neighboring cells based on the serving cell's service time information and signal quality. That is, if the network device is configured with parameters related to the serving cell's time information and the S criterion, the terminal determines whether to perform cell measurements on neighboring cells based on the time information and the serving cell's signal quality. For instance, when determining to measure a neighboring cell based on the time information and the S criterion, if the serving cell's time information is a specific time (absolute time, UTC), and the terminal reaches that time and the serving cell does not satisfy Srxlev > SIntraSearchP, then the terminal will measure the neighboring cell.

[0168] In another example, if the cell reselection parameter indication information includes the serving cell's service time information and the parameter information for applying the S-criterion to cell reselection, then the terminal can measure neighboring cells based on the serving cell's signal quality. That is, if the network device is configured with serving cell time information and S-criterion-related parameters, the terminal determines whether to perform cell measurements on neighboring cells based on the serving cell's signal quality.

[0169] In another example, if the cell reselection parameter indication information includes the serving cell's service time information and the parameter information for applying the S criterion to perform cell reselection, then the terminal can perform measurements on neighboring cells based on the serving cell's service time information. That is, if the network device is configured with serving cell time information and parameters related to the S criterion, the terminal determines whether to perform cell measurements on neighboring cells based on the time information.

[0170] In the cell reselection method provided in this embodiment, when the terminal performs cell reselection based on cell reselection parameter indication information, it can determine the target cell.

[0171] In one implementation, the cell reselection parameter indication information includes cell reselection parameters such as the service time information of neighboring cells. The terminal determines the target cell based on the service time information of neighboring cells. That is, if the network device is configured with parameters related to the time information of neighboring cells, the terminal determines the target cell through the time information.

[0172] Figure 6 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 6 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0173] In step S51, if the cell reselection parameter indication information includes the time information of the neighboring cell providing services, the terminal determines the target cell based on the time information of the neighboring cell providing services, and performs cell reselection based on the determined target cell.

[0174] In the cell reselection method provided in this embodiment, when the terminal determines the target cell based on the service time information of neighboring cells, the service time information of neighboring cells can be time information indicating when neighboring cells can provide services to the terminal. The terminal selects the neighboring cell that can provide services to the terminal the fastest, that is, the cell with the smallest difference between the service time provided by the neighboring cell and the time when the serving cell ends its service.

[0175] In the cell reselection method provided in this embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the service time information of neighboring cells and the parameter information for cell reselection using the R criterion. The terminal can determine the target cell based on the service time information of neighboring cells and / or the R criterion.

[0176] Figure 7 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 7 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0177] In step S61, if the cell reselection parameter indication information indicates that the cell reselection parameters include the service time information of neighboring cells and the parameter information for cell reselection using the R criterion, then the terminal determines the target cell based on the service time information of neighboring cells and / or the R criterion, and performs cell reselection based on the determined target cell.

[0178] In one example, if the cell reselection parameter indication information includes the service time information of neighboring cells and the parameter information for applying the R criterion to cell reselection, then the terminal determines the target cell based on the service time information of neighboring cells and the R criterion. That is, if the network device is configured with parameters related to the time information of neighboring cells and parameters related to the R criterion, the terminal determines the target cell using the time information and the R criterion. For example, when the terminal determines the target cell using the time information and the R criterion, it selects N better cells (best cells) based on the R criterion, and then selects the cell with the smallest difference between the service time it can provide to the terminal and the time when the serving cell ends providing service from among the N best cells as the target cell.

[0179] In another example, if the cell reselection parameter indication information includes the time information of neighboring cells providing services, as well as the parameter information for applying the R criterion to perform cell reselection, then the terminal determines the target cell based on the R criterion. That is, if the network device is configured with parameters related to the time information of neighboring cells and parameters related to the R criterion, the terminal determines the target cell through the R criterion.

[0180] In another example, if the cell reselection parameter indication information includes the time information of neighboring cells providing services, as well as the parameter information for applying the R criterion to perform cell reselection, then the terminal determines the target cell based on the time information of neighboring cells providing services. That is, if the network device is configured with parameters related to the time information of neighboring cells and parameters related to the R criterion, the terminal determines the target cell through the time information.

[0181] In the cell reselection method provided in this embodiment, if the cell reselection parameter indication information is used to indicate a cell reselection parameter, and the cell reselection parameter is parameter information for cell reselection using the R criterion, then the terminal can determine the target cell based on the R criterion.

[0182] Figure 8 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 8 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0183] In step S71, if the cell reselection parameter indication information is used to indicate a cell reselection parameter, and the cell reselection parameter is the parameter information for cell reselection using the R criterion, then the terminal determines the target cell based on the R criterion and performs cell reselection based on the determined target cell.

[0184] In the cell reselection method provided in this embodiment, the cell reselection parameters indicated by the cell reselection parameter indication information may include one or more of the following: location parameters of the serving cell / neighboring cell, and parameter information for cell reselection using the S criterion and parameter information for cell reselection using the R criterion. The location parameters of the serving cell / neighboring cell may include at least one of the following: the distance between the serving cell / neighboring cell and the terminal, and the geographical location of the serving cell / neighboring cell.

[0185] In one embodiment, the cell reselection parameter indication information includes the location parameters of the serving cell, which include at least one of the following: the distance between the serving cell and the terminal, and the geographical location of the serving cell. The location parameters of the serving cell can be threshold values ​​corresponding to location parameters, such as a distance threshold value between the serving cell and the terminal. That is, the location parameters of the serving cell can include geographical range information and a distance threshold between the terminal and the serving cell.

[0186] The terminal can measure neighboring cells based on its location information and the location parameters of the serving cell.

[0187] Figure 9 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 9 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0188] In step S81, if the cell reselection parameter indicated by the cell reselection parameter indication information includes the location parameter of the serving cell, the terminal measures the neighboring cells based on the terminal's location information and the location parameter of the serving cell, and performs cell reselection based on the measurement results.

[0189] The location parameters of the serving cell include at least one of the following: the distance between the serving cell and the terminal, and the geographical location of the serving cell.

[0190] In one example, if the network device is configured with location and / or distance-related parameters for the serving cell, the terminal determines whether to perform neighbor cell measurements based on its own location information and the serving cell's location parameters. For instance, a method for the terminal to determine whether to measure a neighbor cell based on location information might be as follows: if the neighbor cell's frequency priority is lower than the serving cell's, or if the neighbor cell's frequency is the same as the serving cell's, the terminal measures the neighbor cell when R > Rx. That is, when R > Rx, the terminal measures the neighbor cell. Here, Rx is the distance threshold between the terminal and the serving cell, and R is the real-time distance between the terminal and the serving cell.

[0191] In one embodiment, the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of the serving cell and the parameter information for cell reselection using the S criterion. The terminal can measure neighboring cells based on the terminal's location information, at least one of the location parameters of the serving cell, and the signal quality of the serving cell.

[0192] Figure 10 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 10 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0193] In step S91, if the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of the serving cell and the parameter information for cell reselection using the S criterion, then the terminal measures the neighboring cell based on the terminal's location information and at least one of the location parameters of the serving cell and the signal quality of the serving cell, and performs cell reselection based on the measurement results.

[0194] In one example, if the network device is configured with location and / or distance-related parameters for the serving cell, as well as parameters for cell reselection using the S criterion, the terminal determines whether to perform neighbor cell measurements based on its location information, the serving cell's location parameters, and the serving cell's signal quality. For instance, the condition for the terminal to measure a neighbor cell is R > Rx and the serving cell does not satisfy the S criterion. rxlev > S IntraSearchP That is, when R>Rx and S rxlev <=S IntraSearchP At that time, the terminal measures neighboring cells. Alternatively, in the cell reselection method provided in this embodiment, when R>Rx or S rxlev <=S IntraSearchP In this case, the terminal can also measure neighboring cells.

[0195] In the cell reselection method provided in this embodiment, if the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of the serving cell and parameter information for applying the S criterion to perform cell reselection, the terminal can measure neighboring cells based on the signal quality of the serving cell. For example, if the network device is configured with location and / or distance-related parameters of the serving cell and parameters for applying the S criterion to perform cell reselection, but the location information such as the location and / or distance-related parameters of the serving cell is unavailable, the terminal determines whether to perform neighboring cell measurement based on the signal quality of the serving cell.

[0196] In one implementation, if the network device is only configured with parameters related to cell reselection using the S-criterion for the serving cell, the terminal determines whether to perform neighbor cell measurements based on the signal quality of the serving cell. That is, the cell reselection parameter indication information indicates a cell reselection parameter, and this parameter is the parameter information for cell reselection using the S-criterion. The terminal measures neighbor cells based on the signal quality of the serving cell.

[0197] Figure 11 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 11 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0198] In step S101, if the cell reselection parameter indication information is used to indicate a cell reselection parameter, and the cell reselection parameter is the parameter information for cell reselection using the S criterion, then the terminal measures the neighboring cells according to the signal quality of the serving cell and performs cell reselection based on the measurement results.

[0199] In one embodiment of the cell reselection method provided in this disclosure, if the cell reselection parameter indication information includes the location parameters of neighboring cells, the terminal can determine the target cell based on the terminal's location information and the location parameters of neighboring cells. The location parameters of neighboring cells include at least one of the following: the distance between the neighboring cell and the terminal, and the geographical location of the neighboring cell.

[0200] Figure 12 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 12 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0201] In step S111, if the cell reselection parameter indicated by the cell reselection parameter indication information includes the location parameters of neighboring cells, the terminal can determine the target cell based on the terminal's location information and the location parameters of neighboring cells, and perform cell reselection based on the determined target cell.

[0202] In one example, if the network device is configured with location-related information about neighboring cells, the terminal determines the target cell using this information and its own location. For instance, the terminal calculates the distances between itself and multiple target cells, and then selects the cell with the smallest distance as the target cell.

[0203] In one embodiment, the cell reselection method provided in this disclosure includes cell reselection parameters indicated by cell reselection parameter indication information sent by the network device. These parameters include location parameters of neighboring cells and parameter information for cell reselection using the R criterion. The terminal can determine the target cell based on its own location information, at least one of the location parameters of neighboring cells, and the R criterion.

[0204] Figure 13 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 13 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0205] In step S121, if the cell reselection parameter indication information indicates that the cell reselection parameters include the location parameters of neighboring cells and the parameter information for cell reselection using the R criterion, then the terminal determines the target cell based on the terminal's location information and at least one of the location parameters of neighboring cells, as well as the R criterion, and performs cell reselection based on the determined target cell.

[0206] In one example, if the network device is configured with location-related information of neighboring cells and parameters related to the R criterion, the terminal determines the target cell using the location information of the neighboring cells, the terminal's location, and the R criterion. For instance, when determining the target cell based on the location information of neighboring cells and the R criterion, the terminal selects N cells according to the R criterion, and then selects the cell with the smallest distance from the terminal as the target cell from among the N cells.

[0207] In one embodiment, the cell reselection parameter indication information includes the location parameters of neighboring cells and the parameter information for cell reselection using the R criterion. When the terminal performs cell reselection based on the cell reselection parameters, it can determine the target cell based on the R criterion.

[0208] Figure 14 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 14 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0209] In step S131, if the cell reselection parameter indication information includes the location parameters of neighboring cells and the parameter information for cell reselection using the R criterion, then the terminal determines the target cell based on the R criterion and performs cell reselection based on the determined target cell.

[0210] In one example, if the network device is configured with location-related information about neighboring cells and parameters related to the R criterion, the terminal determines the target cell using the R criterion. For instance, if the network device is configured with location-related information about neighboring cells and parameters related to the R criterion, but the terminal's location information is unavailable, the terminal determines the target cell based on the signal quality of the serving cell (R criterion).

[0211] In the cell reselection method provided in this embodiment, the network device can explicitly instruct the terminal to use cell reselection parameters through signaling. That is, the network device can send a signaling instruction to the terminal to indicate one or more cell reselection parameters among the cell reselection parameters indicated by the cell reselection parameter instruction information, which are used by the terminal to perform cell reselection.

[0212] Figure 15 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 15 As shown, the cell reselection method is executed by the network device and includes the following steps.

[0213] In step S141, a signaling indication is sent, wherein the signaling indication is used to indicate one or more cell reselection parameters among the cell reselection parameters indicated by the cell reselection parameter indication information.

[0214] Figure 16 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 16 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0215] In step S151, a signaling indication is received, wherein the signaling indication is used to indicate one or more cell reselection parameters among the cell reselection parameters indicated by the cell reselection parameter indication information.

[0216] In step S152, neighbor cell measurement and / or target cell determination are performed based on one or more cell reselection parameters indicated by the signaling instruction.

[0217] In the cell reselection method provided in this embodiment, when the network device is configured with multiple cell reselection methods for the terminal, the terminal can be instructed by signaling which cell reselection method to use to measure neighboring cells and / or which cell reselection method to use to determine the target cell.

[0218] In the cell reselection method provided in this embodiment, when the network device is configured with multiple cell reselection methods for the terminal to choose from, the terminal can select the cell reselection method based on its own implementation. For example, the terminal can select one or more cell reselection parameters from the multiple cell reselection parameters indicated by the cell reselection parameter indication information based on the terminal's configuration information to perform cell reselection.

[0219] Figure 17 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 17 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0220] In step S161, if the cell reselection parameter indication information indicates that the cell reselection parameters include multiple cell reselection parameters, the terminal selects one or more cell reselection parameters from the multiple cell reselection parameters indicated by the cell reselection parameter indication information based on the terminal's configuration information, and performs cell reselection.

[0221] In the cell reselection method provided in this embodiment, the terminal, based on its own implementation, determines which method to use to determine whether to measure neighboring cells and / or which method to use to determine the target cell; that is, when the network configuration parameters support the terminal to use multiple methods for cell reselection, the terminal, based on its own implementation, determines which method to use for cell reselection.

[0222] In the cell reselection method provided in this embodiment, when the cell reselection parameter indication information sent by the network device indicates cell reselection parameters used by multiple cell reselection methods, such as the cell reselection parameters indicated by the cell reselection parameter indication information including the service time information of the serving cell, the location parameters of the serving cell, the service time information of the neighboring cell, the location parameters of the neighboring cell, the parameter information for cell reselection using the S criterion, and the parameter information for cell reselection using the R criterion, the terminal can still perform cell reselection based on the S criterion and the R criterion.

[0223] Figure 18 This is a flowchart illustrating a cell reselection method according to an exemplary embodiment. For example... Figure 18 As shown, the cell reselection method is executed by the terminal and includes the following steps.

[0224] In step S171, if the cell reselection parameter indication information includes the service time information of the serving cell, the location parameters of the serving cell, the service time information of the neighboring cell, the location parameters of the neighboring cell, the parameter information for cell reselection using the S criterion, and the parameter information for cell reselection using the R criterion, then the terminal performs cell reselection based on the S criterion and the R criterion.

[0225] In the cell reselection method provided in this disclosure, when the network device is configured with cell reselection parameters used by one or more cell reselection methods, the terminal can determine one or more cell reselection parameters to perform cell reselection (neighbor cell measurement and / or target cell determination), thereby enabling cell reselection in multiple cell reselection methods.

[0226] It is understood that the above example is only for illustrative purposes. When the terminal has multiple methods to choose from for cell reselection, the process of the terminal measuring neighboring cells and / or determining the target cell can have many different combinations in order to perform cell reselection.

[0227] For example, if the cell reselection parameters include parameters related to the serving cell's time information, parameters related to the S-criterion, and parameters related to the neighboring cell's time information, the terminal can determine which neighboring cell to measure based on the time information and the S-criterion. If the serving cell's time information is a specific time (absolute time, UTC), and the terminal reaches that time without the serving cell satisfying Srxlev > SIntraSearchP, then the terminal measures the neighboring cell. The terminal determines the target cell based on the time information. If the time information indicates when the neighboring cell can provide service to the terminal, then the terminal selects the neighboring cell that can provide service to the terminal the fastest, i.e., the cell with the smallest difference between the time the neighboring cell provides service and the time the serving cell finishes providing service.

[0228] It is understood that the cell reselection method provided in this embodiment is also applicable to the process of cell reselection through interaction between the terminal and the network device. During the process of cell reselection through interaction between the terminal and the network device, both the terminal and the network device possess the functions described in the above embodiments. Therefore, for the process of cell reselection through interaction between the terminal and the network device, please refer to the relevant descriptions in the above embodiments, which will not be detailed here.

[0229] It should be noted that those skilled in the art will understand that the various implementation methods / embodiments described above in this disclosure can be used in conjunction with the foregoing embodiments, or they can be used independently. Whether used alone or in conjunction with the foregoing embodiments, the implementation principle is similar. In this disclosure, some embodiments are described as implementations used together. Of course, those skilled in the art will understand that such illustrative examples are not intended to limit the embodiments of this disclosure.

[0230] Based on the same concept, this disclosure also provides a cell reselection device.

[0231] It is understood that the cell reselection device provided in this disclosure includes hardware structures and / or software modules corresponding to each function in order to achieve the above-mentioned functions. In conjunction with the units and algorithm steps of the various examples disclosed in this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of this disclosure.

[0232] Figure 19 This is a block diagram illustrating a cell reselection device according to an exemplary embodiment. (Refer to...) Figure 19 The cell reselection device 100 includes a receiving unit 101 and a processing unit 102.

[0233] The receiving unit 101 is configured to receive cell reselection parameter indication information sent by the network device, the cell reselection parameter indication information being used to indicate one or more cell reselection parameters. The processing unit 102 is configured to perform cell reselection based on the cell reselection parameters.

[0234] In one implementation, the cell reselection parameters include the service time information of the serving cell. The processing unit 102 measures neighboring cells based on the service time information of the serving cell.

[0235] In one embodiment, the cell reselection parameters include service time information of the serving cell and parameter information for cell reselection using the S-criterion. The parameter information for cell reselection using the S-criterion includes parameters for calculating cell selection level and cell selection quality, as well as a serving cell signal quality threshold. The processing unit 102 measures neighboring cells based on the service time information and / or the serving cell signal quality; wherein, measuring neighboring cells based on the serving cell signal quality includes triggering measurement of neighboring cells if the serving cell signal quality is greater than the serving cell signal quality threshold.

[0236] In one implementation, the cell reselection parameters include the service time information of neighboring cells. The processing unit 102 determines the target cell based on the service time information of neighboring cells and performs cell reselection based on the determined target cell.

[0237] In one implementation, the cell reselection parameters include service time information of neighboring cells and parameter information for cell reselection using the R criterion. The processing unit 102 determines the target cell based on the service time information of neighboring cells and / or the R criterion, and performs cell reselection based on the determined target cell.

[0238] In one embodiment, cell reselection parameter indication information is used to indicate a cell reselection parameter. This cell reselection parameter is parameter information for cell reselection using the R criterion. The parameter information for cell reselection using the R criterion includes values ​​determined by the cell signal quality value, cell reselection hysteresis value, and temporary offset value. The processing unit 102 determines the target cell based on the R criterion and performs cell reselection based on the determined target cell.

[0239] In one embodiment, the cell reselection parameter indication information includes the location parameters of the serving cell, which include at least one of the following: the distance between the serving cell and the terminal, and the geographical location of the serving cell. The processing unit 102 measures neighboring cells based on the terminal's location information and the location parameters of the serving cell.

[0240] In one embodiment, the cell reselection parameter indication information indicates cell reselection parameters including the location parameters of the serving cell and parameter information for cell reselection using the S criterion. The location parameters of the serving cell include at least one of the distance between the serving cell and the terminal, and the geographical location of the serving cell. The processing unit 102 measures neighboring cells based on the terminal's location information, at least one of the location parameters of the serving cell, and the signal quality of the serving cell.

[0241] In one embodiment, the cell reselection parameter indication information includes the location parameters of the serving cell and parameter information for cell reselection using the S criterion. The location parameters of the serving cell include at least one of the distance between the serving cell and the terminal, and the geographical location of the serving cell. The processing unit 102 measures neighboring cells based on the signal quality of the serving cell.

[0242] In one embodiment, cell reselection parameter indication information is used to indicate a cell reselection parameter, which is parameter information for cell reselection using the S criterion. The processing unit 102 measures neighboring cells based on the signal quality of the serving cell.

[0243] In one embodiment, the cell reselection parameter indication information includes the location parameters of neighboring cells, which include at least one of the following: the distance between the neighboring cell and the terminal, and the geographical location of the neighboring cell. The processing unit 102 determines the target cell based on the terminal's location information and the location parameters of the neighboring cells, and performs cell reselection based on the determined target cell.

[0244] In one embodiment, the cell reselection parameter indication information includes the location parameters of neighboring cells and parameter information for cell reselection using the R criterion. The processing unit 102 determines a target cell based on the terminal's location information and at least one of the location parameters of neighboring cells, as well as the R criterion, and performs cell reselection based on the determined target cell.

[0245] In one embodiment, the cell reselection parameter indication information includes the location parameters of neighboring cells and parameter information for cell reselection using the R criterion. The processing unit 102 determines the target cell based on the R criterion and performs cell reselection based on the determined target cell.

[0246] In one embodiment, the cell reselection method further includes: receiving a signaling indication, wherein the signaling indication is used to indicate one or more cell reselection parameters among the cell reselection parameters indicated by the cell reselection parameter indication information.

[0247] The processing unit 102 performs neighbor cell measurement and / or determines the target cell based on one or more cell reselection parameters indicated by the signaling indication.

[0248] In one embodiment, the cell reselection parameter indication information includes multiple cell reselection parameters. The processing unit 102 selects one or more cell reselection parameters from the multiple cell reselection parameters indicated by the cell reselection parameter indication information based on the terminal's configuration information, and performs cell reselection.

[0249] In one embodiment, the cell reselection parameter indication information includes the service time information of the serving cell, the location parameters of the serving cell, the service time information of the neighboring cells, the location parameters of the neighboring cells, the parameter information for cell reselection using the S criterion, and the parameter information for cell reselection using the R criterion.

[0250] The processing unit 102 performs cell reselection based on the S criterion and the R criterion.

[0251] Figure 20 This is a block diagram illustrating a cell reselection device according to an exemplary embodiment. (Refer to...) Figure 20 The cell reselection device 200 includes a transmitting unit 201.

[0252] The transmitting unit 201 is configured to transmit cell reselection parameter indication information, which is used to indicate one or more cell reselection parameters.

[0253] In one implementation, the cell reselection parameters include at least one of the following:

[0254] The serving cell provides service time information. The serving cell's location parameters. Neighboring cells provide service time information. Neighboring cells' location parameters. Parameters for cell reselection using the S criterion. And parameter information for cell reselection using the R criterion.

[0255] In one embodiment, the transmitting unit 201 is further configured to:

[0256] Send a signaling indication, wherein the signaling indication is used to indicate one or more cell reselection parameters among the cell reselection parameters indicated by the cell reselection parameter indication information.

[0257] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0258] Figure 21 This is a block diagram illustrating an apparatus 300 for cell reselection according to an exemplary embodiment. For example, apparatus 300 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0259] Reference Figure 20 The device 300 may include one or more of the following components: processing component 302, memory 304, power component 306, multimedia component 308, audio component 310, input / output (I / O) interface 312, sensor component 314, and communication component 316.

[0260] Processing component 302 typically controls the overall operation of device 300, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 302 may include one or more processors 320 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 302 may include one or more modules to facilitate interaction between processing component 302 and other components. For example, processing component 302 may include a multimedia module to facilitate interaction between multimedia component 308 and processing component 302.

[0261] Memory 304 is configured to store various types of data to support the operation of device 300. Examples of such data include instructions for any application or method operating on device 300, contact data, phonebook data, messages, pictures, videos, etc. Memory 304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0262] The power supply component 306 provides power to the various components of the device 300. The power supply component 306 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the device 300.

[0263] Multimedia component 308 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 308 includes a front-facing camera and / or a rear-facing camera. When the device 300 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0264] Audio component 310 is configured to output and / or input audio signals. For example, audio component 310 includes a microphone (MIC) configured to receive external audio signals when device 300 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 304 or transmitted via communication component 316. In some embodiments, audio component 310 also includes a speaker for outputting audio signals.

[0265] I / O interface 312 provides an interface between processing component 302 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, start buttons, and lock buttons.

[0266] Sensor assembly 314 includes one or more sensors for providing status assessments of various aspects of device 300. For example, sensor assembly 314 may detect the on / off state of device 300, the relative positioning of components such as the display and keypad of device 300, changes in the position of device 300 or a component of device 300, the presence or absence of user contact with device 300, the orientation or acceleration / deceleration of device 300, and temperature changes of device 300. Sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 314 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0267] Communication component 316 is configured to facilitate wired or wireless communication between device 300 and other devices. Device 300 can access wireless networks according to communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 316 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 316 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented according to radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0268] In an exemplary embodiment, the apparatus 300 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0269] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 304 including instructions, which can be executed by a processor 320 of the device 300 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0270] Figure 22 This is a block diagram illustrating an apparatus 400 for cell reselection according to an exemplary embodiment. For example, apparatus 400 can be provided as a network device, such as a base station. (Refer to...) Figure 22The apparatus 400 includes a processing component 422, which further includes one or more processors, and memory resources represented by memory 432 for storing instructions, such as application programs, that can be executed by the processing component 422. The application programs stored in memory 432 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 422 is configured to execute instructions to perform the methods described above.

[0271] Device 400 may also include a power supply component 426 configured to perform power management of device 400, a wired or wireless network interface 450 configured to connect device 400 to a network, and an input / output (I / O) interface 458. Device 400 may operate according to an operating system stored in memory 432, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or similar.

[0272] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 432 including instructions, which can be executed by a processing component 422 of the apparatus 400 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0273] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0274] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0275] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0276] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0277] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A cell reselection method, characterized in that, Applied to non-terrestrial networks (NTNs), the method is executed by a terminal and includes: The system receives cell reselection parameter indication information sent by a network device. This information indicates various cell reselection parameters, including the location parameters of the serving cell, the service time information of the serving cell, the service time information of neighboring cells, and parameters for applying the S-criteria to perform cell reselection. The parameters for applying the S-criteria include parameters for calculating cell selection level and cell selection quality, as well as a serving cell signal quality threshold. The location parameters of the serving cell include at least one of the distance threshold between the serving cell and the terminal, and the location of the serving cell. The service time information of the serving cell includes the time information when the serving cell can provide service to the terminal and the time information when the serving cell stops providing service. The service time information of neighboring cells includes the time information when neighboring cells can provide service to the terminal. When the cell reselection parameters include the service time information of the serving cell, the S criterion, and the service time information of the neighboring cells, the terminal determines to measure the neighboring cells based on the service time information of the serving cell and the S criterion. If the serving cell provides service at a specific time, and the terminal arrives at that time, and the serving cell does not satisfy S... rxlev Greater than S IntraSearchP In this case, the terminal measures neighboring cells, where S rxlev Select the level for the cell, S IntraSearchP This is the threshold value for the reference signal received power signal level used to initiate same-frequency measurements; Based on the service time information of the neighboring cells, the target cell is determined, and cell reselection is performed based on the determined target cell; The target cell is the neighboring cell with the smallest difference between the time the neighboring cell provides service and the time the serving cell stops providing service.

2. The cell reselection method according to claim 1, characterized in that, The cell reselection parameters also include at least one of the following: Location parameters of neighboring communities.

3. The cell reselection method according to claim 2, characterized in that, The location parameters of the neighboring cell include at least one of the following: the distance between the neighboring cell and the terminal, and the geographical location of the neighboring cell.

4. The cell reselection method according to claim 1, characterized in that, The cell reselection method also includes: Receive signaling indication, wherein the signaling indication is used to indicate one or more cell reselection parameters among the cell reselection parameters indicated by the cell reselection parameter indication information.

5. A cell reselection method, characterized in that, Applied to non-terrestrial networks (NTNs), the method is performed by a network device and includes: The system sends cell reselection parameter indication information to the terminal. This information indicates various cell reselection parameters, including the location parameters of the serving cell, the service time information of the serving cell, the service time information of neighboring cells, and parameters for applying the S-criteria to perform cell reselection. The parameters for applying the S-criteria include parameters for calculating cell selection level and cell selection quality, as well as a serving cell signal quality threshold. The location parameters of the serving cell include at least one of the distance threshold between the serving cell and the terminal, and the location of the serving cell. The service time information of the serving cell includes the time information when the serving cell can provide service to the terminal and the time information when the serving cell stops providing service. The service time information of neighboring cells includes the time information when neighboring cells can provide service to the terminal. When the cell reselection parameters include the service time information of the serving cell, the S criterion, and the service time information of the neighboring cells, the terminal determines to measure the neighboring cells based on the service time information of the serving cell and the S criterion. If the serving cell provides service at a specific time, and the terminal arrives at that time, and the serving cell does not satisfy S... rxlev Greater than S IntraSearchP In this case, the terminal measures neighboring cells, where S rxlev Select the level for the cell, S IntraSearchP This is the threshold value for the reference signal received power signal level used to initiate same-frequency measurements; The service time information of the neighboring cells is used by the terminal to determine the target cell and perform cell reselection based on the determined target cell; The target cell is the neighboring cell with the smallest difference between the time the neighboring cell provides service and the time the serving cell stops providing service.

6. The cell reselection method according to claim 5, characterized in that, The cell reselection parameters also include at least one of the following: Location parameters of neighboring communities.

7. The cell reselection method according to claim 5, characterized in that, The cell reselection method also includes: Send a signaling indication to the terminal, wherein the signaling indication is used to indicate one or more cell reselection parameters among the cell reselection parameters indicated by the cell reselection parameter indication information.

8. A cell reselection device, characterized in that, Applications to non-terrestrial networks (NTNs) include: The receiving unit is configured to receive cell reselection parameter indication information sent by the network device. The cell reselection parameter indication information indicates various cell reselection parameters. These parameters include the location parameters of the serving cell, the service time information of the serving cell, the service time information of neighboring cells, and parameter information for applying the S-criteria to perform cell reselection. The parameter information for applying the S-criteria to perform cell reselection includes parameters for calculating cell selection level and cell selection quality, as well as a serving cell signal quality threshold. The location parameters of the serving cell include at least one of the distance threshold between the serving cell and the terminal, and the location of the serving cell. The service time information of the serving cell includes the time information when the serving cell can provide service to the terminal and the time information when the serving cell stops providing service. The service time information of neighboring cells includes the time information when neighboring cells can provide service to the terminal. The device is configured such that, when cell reselection parameters include the service time information of the serving cell, the S criterion, and the service time information of neighboring cells, the terminal determines to measure neighboring cells based on the service time information of the serving cell and the S criterion; if the service time information of the serving cell is a specific time, the terminal reaches that time, and the serving cell does not satisfy the S criterion. rxlev Greater than S IntraSearchP In this case, the terminal measures neighboring cells, where S rxlev Select the level for the cell, S IntraSearchP The reference signal received power signal level threshold is used to initiate co-frequency measurement; based on the service time information of the neighboring cells, the target cell is determined, and cell reselection is performed based on the determined target cell; wherein, the target cell is the neighboring cell with the smallest difference between the service time of the neighboring cell and the service time of the serving cell.

9. A cell reselection device, characterized in that, Applications to non-terrestrial networks (NTNs) include: The transmitting unit is configured to send cell reselection parameter indication information to the terminal. The cell reselection parameter indication information indicates various cell reselection parameters. These parameters include the location parameters of the serving cell, the service time information of the serving cell, the service time information of neighboring cells, and parameter information for applying the S-criterion to cell reselection. The parameter information for applying the S-criterion to cell reselection includes parameters for calculating cell selection level and cell selection quality, as well as a serving cell signal quality threshold. The location parameters of the serving cell include at least one of the distance threshold between the serving cell and the terminal, and the location of the serving cell. The service time information of the serving cell includes the time information when the serving cell can provide service to the terminal and the time information when the serving cell stops providing service. The service time information of neighboring cells includes the time information when neighboring cells can provide service to the terminal. When the cell reselection parameters include the service time information of the serving cell, the S criterion, and the service time information of neighboring cells, the terminal determines to measure neighboring cells based on the service time information of the serving cell and the S criterion; if the service time information of the serving cell is a specific time, the terminal reaches that time, and the serving cell does not satisfy the S criterion. rxlev Greater than S IntraSearchP In this case, the terminal measures neighboring cells, where S rxlev Select the level for the cell, S IntraSearchP The reference signal received power signal level threshold is used to initiate co-frequency measurement; the service time information of the neighboring cell is used by the terminal to determine the target cell and perform cell reselection based on the determined target cell; The target cell is the neighboring cell with the smallest difference between the time the neighboring cell provides service and the time the serving cell stops providing service.

10. A cell reselection device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to execute the method described in any one of claims 1-4.

11. A cell reselection device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method described in any one of claims 5-7.

12. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 1-4 to be performed.

13. A computer-readable storage medium for storing instructions that, when executed, cause the method of any one of claims 5-7 to be performed.

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