Cell selection method and apparatus, and device and storage medium

Abstract

The present application belongs to the technical field of communications. Disclosed are a cell selection method and apparatus, and a device and a storage medium. The cell selection method in the embodiments of the present application comprises: a terminal acquiring first information of a first cell, and the terminal executing a first operation on the basis of the first information, wherein the first operation is an operation related to cell selection or cell re-selection, and the first information is used for indicating at least one of the following: a satellite operation mode of a cell, a time when a satellite is connected to a terrestrial gateway, a time when the cell stops serving, a time when the cell stores data, the amount of data that the cell can store, a first threshold value which is related to the maximum first data amount that allows the terminal to select or re-select the cell, a second threshold value which is related to the minimum first data amount that allows the terminal to select or re-select the cell, a service type supported by the cell, and a forwarding priority of the service type supported by the cell, the first data amount comprising at least one of the following: the amount of data available to the terminal, and the amount of data to be sent by the terminal.

Description

Cell selection method, device, equipment and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202410052463.6 filed in China on January 12, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a cell selection method, apparatus, device and storage medium. Background Art

[0004] Non-Terrestrial Networks (NTN) refer to networks or network segments that use satellite or unmanned aircraft system (UAS) platforms for transmission. Compared with terrestrial communication systems, satellite-based non-terrestrial communication systems have a wider coverage area. Typical applicable scenarios include situations where ground base stations cannot be built or are damaged, such as continuous coverage in remote mountainous areas, deserts, oceans, and forests, and emergency communications when ground base stations are damaged due to natural disasters.

[0005] In "normal or default satellite operation" mode, signaling and data exchange between a terminal connected to the satellite and a remote terrestrial network requires the simultaneous activation of both the service link and the feeder link. This allows for a continuous end-to-end connection path between the terminal, the satellite, and the terrestrial network when the terminal interacts with the satellite via the service link. In "store-and-forward satellite operation" mode, the end-to-end exchange of signaling or data is handled by a combination of two asynchronous steps. One step involves signaling or data exchange between the terminal and the satellite while the satellite is not connected to the terrestrial network (i.e., the satellite can operate the service link without an active feeder link). The other step involves establishing a connection between the satellite and the terrestrial network, enabling communication between them. Thus, the satellite transitions from being connected to the terminal in one step to being connected to the terrestrial network in the other.

[0006] However, when cells supporting the normal satellite operation mode coexist with cells supporting the store and forward satellite operation mode, there is currently no solution for how the terminal performs cell selection and reselection, which makes it impossible to ensure the communication reliability of the terminal. Summary of the Invention

[0007] The embodiments of the present application provide a cell selection method, apparatus, device, and storage medium, which can solve the problem of how to perform cell selection and reselection to ensure the communication reliability of a terminal.

[0008] In a first aspect, a cell selection method is provided, the method comprising: a terminal obtains first information of a first cell; the terminal performs a first operation based on the first information; wherein the first operation is an operation related to cell selection or cell reselection; the first information is used to indicate at least one of the following: a satellite operation mode of the cell; the time when the satellite is connected to a ground gateway; the time when the cell stops service; the time when the cell stores data; the amount of data that the cell can store; a first threshold value, the first threshold value is related to the maximum first data amount of the cell that the terminal can select or reselect; a second threshold value, the second threshold value is related to the minimum first data amount of the cell that the terminal can select or reselect; the service type supported by the cell; the forwarding priority of the service type supported by the cell; wherein the first data amount includes at least one of the following: the amount of data available to the terminal; the amount of data to be sent by the terminal.

[0009] In a second aspect, a cell selection device is provided, which includes: an acquisition module and an execution module. The acquisition module is used to acquire first information of a first cell. The execution module is used to execute a first operation based on the first information acquired by the acquisition module. The first operation is an operation related to cell selection or cell reselection; the first information is used to indicate at least one of the following: the satellite operation mode of the cell; the time when the satellite is connected to the ground gateway; the time when the cell stops service; the time when the cell stores data; the amount of data that the cell can store; a first threshold value, the first threshold value is related to the maximum first data amount of the cell that the terminal can select or reselect; a second threshold value, the second threshold value is related to the minimum first data amount of the cell that the terminal can select or reselect; the service type supported by the cell; the forwarding priority of the service type supported by the cell; the first data amount includes at least one of the following: the amount of data available to the terminal; the amount of data to be sent by the terminal.

[0010] According to a third aspect, a cell selection method is provided, which includes: a network-side device sends first information of a first cell to a terminal, the first information is used to perform a first operation, and the first operation is an operation related to cell selection or cell reselection; the first information is used to indicate at least one of the following: the satellite operation mode of the cell; the time when the satellite is connected to the ground gateway; the time when the cell stops service; the time when the cell stores data; the amount of data that the cell can store; a first threshold value, the first threshold value is related to the maximum first data amount of the cell that the terminal can select or reselect; a second threshold value, the second threshold value is related to the minimum first data amount of the cell that the terminal can select or reselect; the service type supported by the cell; the forwarding priority of the service type supported by the cell; wherein the first data amount includes at least one of the following: the amount of data available to the terminal; the amount of data to be sent by the terminal.

[0011] In a fourth aspect, a cell selection device is provided, comprising: a sending module, configured to send first information of a first cell to a terminal, the first information being used to perform a first operation related to cell selection or cell reselection; the first information being used to indicate at least one of the following: a satellite operation mode of the cell; a time when the satellite is connected to a ground gateway; a time when the cell is out of service; a time when the cell stores data; a volume of data that the cell can store; a first threshold value, the first threshold value being related to a maximum volume of first data of a cell that the terminal can select or reselect; a second threshold value being related to a minimum volume of first data of a cell that the terminal can select or reselect; a service type supported by the cell; and a forwarding priority of a service type supported by the cell. The first volume of data includes at least one of the following: a volume of data available to the terminal; and a volume of data to be sent by the terminal.

[0012] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0013] In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is used to obtain first information of a first cell. The processor is used to perform a first operation based on the first information. The first operation is an operation related to cell selection or cell reselection; the first information is used to indicate at least one of the following: the satellite operation mode of the cell; the time when the satellite is connected to the ground gateway; the time when the cell stops service; the time when the cell stores data; the amount of data that the cell can store; a first threshold value, the first threshold value is related to the maximum first data amount of the cell that the terminal can select or reselect; a second threshold value, the second threshold value is related to the minimum first data amount of the cell that the terminal can select or reselect; the service type supported by the cell; the forwarding priority of the service type supported by the cell; wherein the first data amount includes at least one of the following: the amount of data available to the terminal; the amount of data to be sent by the terminal.

[0014] In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the third aspect are implemented.

[0015] In the eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the communication interface is used to send first information of a first cell to a terminal, and the first information is used to perform a first operation, which is an operation related to cell selection or cell reselection; the first information is used to indicate at least one of the following: the satellite operation mode of the cell; the time when the satellite is connected to the ground gateway; the time when the cell stops service; the time when the cell stores data; the amount of data that the cell can store; a first threshold, the first threshold is related to the maximum first data amount of the cell that the terminal can select or reselect; the second threshold, the second threshold is related to the minimum first data amount of the cell that the terminal can select or reselect; the service type supported by the cell; the forwarding priority of the service type supported by the cell; wherein the first data amount includes at least one of the following: the amount of data available to the terminal; the amount of data to be sent by the terminal.

[0016] In the ninth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the third aspect are implemented.

[0017] In the tenth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the method described in the first aspect, or to implement the method described in the third aspect.

[0018] In the eleventh aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the cell selection method as described in the first aspect, or to implement the steps of the cell selection method as described in the third aspect.

[0019] In the twelfth aspect, a wireless communication system is provided, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the third aspect.

[0020] In an embodiment of the present application, a terminal may perform a first operation based on first information about a first cell, where the first operation is an operation related to cell selection or cell reselection. In this solution, when a cell supporting the default satellite operation mode coexists with a cell supporting the store-and-forward satellite operation mode, the terminal may utilize the relevant information about the first cell to perform an operation related to cell selection or reselection, thereby enabling the terminal to select or reselect an appropriate cell, thereby ensuring communication reliability of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of the architecture of a wireless communication system provided in an embodiment of the present application;

[0022] FIG2 is a flowchart of a cell selection method according to an embodiment of the present application;

[0023] FIG3 is a second flowchart of a cell selection method provided in an embodiment of the present application;

[0024] FIG4 is a third flowchart of a cell selection method provided in an embodiment of the present application;

[0025] FIG5 is a schematic diagram of a structure of a cell selection device according to an embodiment of the present application;

[0026] FIG6 is a second structural diagram of a cell selection device provided in an embodiment of the present application;

[0027] FIG7 is a schematic diagram of the hardware structure of a communication device provided in an embodiment of the present application;

[0028] FIG8 is a schematic diagram of the hardware structure of a terminal provided in an embodiment of the present application;

[0029] FIG9 is a schematic diagram of the hardware structure of a network-side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0031] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more. In addition, "or" in this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0032] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0033] The terms "at least one" and "at least one of" in this application refer to any one, any two, or a combination of more than two of the objects included. For example, at least one of a, b, and c can be represented by: "a", "b", "c", "a and b", "a and c", "b and c", and "a, b, and c", where a, b, and c can be single or multiple. Similarly, "at least two" means two or more, and its meaning is similar to "at least one".

[0034] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) systems. th Generation, 6G) communication system.

[0035] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AS) or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home evolved Node B (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0036] The following explains some concepts and / or terms involved in a cell selection method, apparatus, device, and storage medium provided in an embodiment of the present application.

[0037] 1. NTN

[0038] NTN refers to a network or network segment that uses satellite or UAS platforms for transmission. Compared with terrestrial communication systems, satellite-based non-terrestrial communication systems have a wider coverage area. Typical applicable scenarios include situations where ground base stations cannot be built or are damaged, such as continuous coverage in remote mountainous areas, deserts, oceans, and forests, and emergency communications when ground base stations are damaged during natural disasters.

[0039] Satellites: including Low Earth Orbiting (LEO) satellites, Medium Earth Orbiting (MEO) satellites, Geostationary Earth Orbiting (GEO) satellites and Highly Elliptical Orbiting (HEO) satellites.

[0040] A typical scenario of a non-terrestrial network is a non-terrestrial network based on a regenerative payload. The base station is on the satellite, or the satellite is the base station. The link between the satellite and the terminal is the service link, and the link between the satellite and the ground base station or ground gateway is the feedback link.

[0041] 2. Store and Forward (S&F) satellite operations

[0042] Satellite store and forward operations in systems accessed via satellite are intended to provide delay-tolerant communication services to terminals under satellite coverage with intermittent or temporary satellite connectivity (e.g., when the satellite is not connected to the terrestrial network through a feedback link or through an inter-satellite link).

[0043] In the "normal / default satellite operation" mode, signaling and data exchange between a terminal accessing the satellite and the remote terrestrial network requires that both the service link and the feeder link be activated simultaneously, so that when the terminal interacts with the satellite via the service link, there is a continuous end-to-end connection path between the terminal, the satellite, and the terrestrial network.

[0044] In the "S&F satellite operation" mode, the end-to-end exchange of signaling or data is now handled by combining two time-asynchronous steps (e.g., Step A and Step B). In Step A, signaling / data is exchanged between the terminal and the satellite, while the satellite is not connected to the terrestrial network (i.e., the satellite can operate a service link without an active feedback link). In Step B, a connection is established between the satellite and the terrestrial network, enabling communication between the satellite and the terrestrial network. Thus, the satellite transitions from being connected to the terminal in Step A to being connected to the terrestrial network in Step B.

[0045] The cell selection method provided in the embodiments of the present application is described in detail below through some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0046] The present invention provides a cell selection method, and Figure 2 shows a flowchart of the cell selection method provided by the present invention. As shown in Figure 2, the cell selection method provided by the present invention may include the following steps 201 and 202.

[0047] Step 201: The terminal obtains first information of a first cell.

[0048] In this embodiment of the present application, the first information is used to indicate at least one of the following:

[0049] The satellite operation mode of the cell;

[0050] The time it takes for the satellite to connect with the ground gateway;

[0051] The time when the cell service is stopped;

[0052] The time the cell stores data;

[0053] The amount of data that the cell can store;

[0054] a first threshold value, the first threshold value being related to a maximum first data volume of a cell that can be selected or reselected by the terminal;

[0055] a second threshold value, the second threshold value being related to a minimum first data amount of a cell that can be selected or reselected by the terminal;

[0056] Types of services supported by the cell;

[0057] Forwarding priority of the service type supported by the cell.

[0058] The first data volume includes at least one of the following:

[0059] The amount of data available to the terminal;

[0060] The amount of data to be sent by the terminal.

[0061] It should be noted that the terminal of the embodiment of the present application supports related operations in the storage and forwarding satellite operation mode. For example, the terminal can be a handheld terminal, an enhanced machine type communication (eMTC) or a narrowband Internet of Things (NB-IoT) device, etc., which is not limited to the embodiment of the present application.

[0062] The satellite described in the embodiment of the present application is a satellite that provides cell coverage. The cell described in the embodiment of the present application is a satellite cell, that is, a cell within the coverage range of a satellite.

[0063] The end-to-end described in the embodiments of the present application refers to the terminal to the satellite, and the satellite to the ground network (or ground gateway), which can be recorded as the terminal-satellite-ground network.

[0064] The service link described in the embodiment of the present application refers to the link between the terminal and the satellite, and the feedback link refers to the link between the satellite and the ground gateway.

[0065] Optionally, in an embodiment of the present application, the first information is used to indicate a satellite operation mode, and the satellite operation mode includes at least one of the following: a default satellite operation mode and a store and forward satellite operation mode.

[0066] The default satellite operation mode includes at least one of the following:

[0067] The cell's service link and feedback link are both available;

[0068] Satellite connectivity to the terrestrial gateway is available;

[0069] The cell supports end-to-end connectivity.

[0070] The above-mentioned store and forward satellite operation mode includes at least one of the following:

[0071] The serving link of the cell is available, and the feedback link of the cell is unavailable;

[0072] The satellite's connection to the ground gateway is unavailable;

[0073] The cell only supports terminal-to-satellite connections;

[0074] The cell does not support end-to-end connectivity.

[0075] It should be noted that the “available” described in the embodiments of the present application can also be understood as existing, established or activated; the “unavailable” described in the embodiments of the present application can also be understood as non-existent, disconnected, inactivated or deactivated.

[0076] Optionally, in an embodiment of the present application, the first information is used to indicate the time when the satellite is connected to the ground gateway; the first information includes at least one of the following:

[0077] Feedback link availability time information;

[0078] Time information when both the service link and the feedback link are available;

[0079] Time information available for satellite connections to ground gateways;

[0080] Time information available for the end-to-end connection.

[0081] Optionally, in an embodiment of the present application, the first information specifically includes at least one of the following: (taking the establishment of a connection between a satellite and a ground gateway as an example):

[0082] First time information, indicating the time when the satellite establishes a connection with the ground gateway, specifically including at least one of the following: absolute time (e.g., Universal Time Coordinated (UTC) time), relative time (e.g., frame number, subframe number, symbol number, or time slot number, with the timing of the serving cell as a reference);

[0083] The second time information indicates how long it will take for the satellite to establish a connection with the ground gateway, for example, the time unit is hours / minutes / seconds / milliseconds, for example, it will take 2 hours for the satellite to establish a connection with the ground gateway.

[0084] Optionally, in an embodiment of the present application, the first information is used to indicate the time when the cell stops serving; the first information includes at least one of the following:

[0085] Time information when the service link is unavailable;

[0086] Feedback link unavailable time information;

[0087] The time information when the cell stops serving the current coverage area.

[0088] Optionally, in an embodiment of the present application, the first embodiment includes at least one of the following:

[0089] The third time information indicates the time when the cell stops serving the current coverage area, and the specific form includes at least one of the following: absolute time (such as UTC time) or relative time (such as frame number, subframe number, symbol number, or time slot number, with the timing of the serving cell as a reference);

[0090] The fourth time information indicates how long it will take for the cell to stop serving the current coverage area, for example, the time unit is hours / minutes / seconds / milliseconds, for example, there are 5 minutes left before the cell stops serving the current coverage area.

[0091] Optionally, in an embodiment of the present application, the first information is used to indicate the time when the cell stores data. The time when the cell stores data may also be the time when the satellite stores data. The satellite is a satellite that provides cell coverage.

[0092] Optionally, in the embodiment of the present application, the first information specifically includes at least one of the following:

[0093] Fifth time information, indicating a time period during which the cell stores data and / or signaling, for example, including a start time and an end time, or including a start time and a duration, or including an end time;

[0094] The sixth time information indicates how long the cell can store data or signaling. For example, the time unit is hours / minutes / seconds / milliseconds. For example, the cell can store data or signaling for 10 hours.

[0095] Optionally, in an embodiment of the present application, the above-mentioned data may include at least one of control plane data and user plane data.

[0096] Optionally, in an embodiment of the present application, the first information is used to indicate the amount of data that can be stored in the cell; the first information includes at least one of the following:

[0097] The total amount of data that can be stored in the cell (e.g., in megabytes, kilobytes, or bits);

[0098] The remaining storable data volume of the cell;

[0099] The cell has used information about the amount of data that can be stored.

[0100] Optionally, in an embodiment of the present application, the above-mentioned first information is used to indicate the service type or business type supported by the cell, specifically including at least one of the following: emergency service (emergency), high priority access service (highPriorityAccess, related to AC11...15), mobile terminal (Mobile Terminating, MT) access service, mobile signal source (Mobile Originating, MO) signal service, MO data (Data) service, delay-tolerant access (delayTolerantAccess-v1020), voice call (mo-VoiceCall-v1280), delay-sensitive service, conversational service, streaming media service, interactive service, and background service.

[0101] Optionally, in the embodiment of the present application, the first information is used to indicate a threshold value related to the data volume.

[0102] Optionally, in an embodiment of the present application, the above-mentioned first information is used to indicate the forwarding priority of the service type supported by the cell. For example, the forwarding priority can be represented by a numerical value, where a larger numerical value indicates a higher priority, or a larger numerical value indicates a lower priority.

[0103] Optionally, in an embodiment of the present application, the above step 201 can be specifically implemented through the following step 201a or step 201b.

[0104] Step 201a: The terminal receives a system message from the first cell.

[0105] In an embodiment of the present application, the above-mentioned system message includes first information.

[0106] Optionally, in an embodiment of the present application, the system message may be System Information Block 1 (SIB1), SIB31, or SIB19. SIB31 is used to provide satellite assistance information (i.e., including the first information) of the serving cell. SIB19 is used to provide satellite assistance information (i.e., including the first information) for NTN access. In this case, only the NTN cell can provide the first information, i.e., the first cell is an NTN cell.

[0107] Step 201b: The terminal receives a system message from the fourth cell.

[0108] In the embodiment of the present application, the fourth cell is a serving cell of the terminal, the first cell is a neighboring cell of the terminal, and the system message includes the first information.

[0109] Optionally, in an embodiment of the present application, the system message of the fourth cell may be SIB3, SIB4, SIB5 of the fourth cell, SIB for providing satellite auxiliary information (ie, first information) of neighboring cells, or SIB19.

[0110] Step 202: The terminal performs a first operation based on the first information.

[0111] In the embodiment of the present application, the above-mentioned first operation is an operation related to cell selection or cell reselection.

[0112] Optionally, in an embodiment of the present application, the first operation includes at least one of the following: a second operation, a third operation, a fourth operation, a fifth operation, and a sixth operation.

[0113] The second operation includes at least one of the following:

[0114] The first cell is not considered to be a suitable cell;

[0115] Deeming the first cell to be an acceptable cell;

[0116] The first cell is considered to be prohibited;

[0117] The first cell is not considered as a candidate cell for the first operation.

[0118] The third operation includes at least one of the following:

[0119] The service frequency is considered to be the highest priority frequency;

[0120] Frequencies other than the service frequency are considered to be frequencies of lowest priority;

[0121] Increasing the priority of the service frequency by a first offset;

[0122] reducing the priority of frequencies other than the service frequency by a second offset;

[0123] A third offset is added to a first value of the serving cell, wherein the first value is a cell selection reception level value;

[0124] A fourth offset is added to a second value of the serving cell, where the second value is the cell selection quality value;

[0125] reducing a third threshold by a fifth offset, the third threshold being the first value threshold for intra-frequency measurement;

[0126] reducing a fourth threshold by a sixth offset, the fourth threshold being a second value threshold for intra-frequency measurement;

[0127] reducing a fifth threshold by a seventh offset, the fifth threshold being a first value threshold for inter-frequency or inter-system frequency measurement;

[0128] The sixth threshold is reduced by an eighth offset, where the sixth threshold is a second value threshold for inter-frequency or inter-system frequency measurement.

[0129] Exemplarily, the first value is Srxlev, the second value is Squal, the third threshold is SIntraSearchP, the fourth threshold is SIntraSearchQ, the fifth threshold is SnonIntraSearchP, and the sixth threshold is SnonIntraSearchQ.

[0130] The fourth operation includes at least one of the following:

[0131] excluding the first cell during the execution of the first operation;

[0132] When the first cell is not a serving cell of the terminal and the frequency of the first cell is the same as the serving frequency, reducing the R value of the first cell by a ninth offset;

[0133] The first value of the first cell is reduced by a tenth offset, the first value being the cell selection reception level value;

[0134] reducing the second value of the first cell by an eleventh offset, the second value being the cell selection quality value;

[0135] The first value of the serving cell is increased by a twelfth offset, the first value being the cell selection reception level value;

[0136] The second value of the serving cell is increased by a thirteenth offset, the second value being the cell selection quality value;

[0137] Increasing a fourth offset by a seventh threshold, the seventh threshold being a first value threshold for a higher priority frequency or a higher priority alien system frequency;

[0138] increasing an eighth threshold by a fifteenth offset, the eighth threshold being a second value threshold for a higher priority frequency or a higher priority alien system frequency;

[0139] Increasing a sixth offset by a ninth threshold, the ninth threshold being a first value threshold for a lower priority frequency or a lower priority alien system frequency;

[0140] Increasing a tenth threshold by a seventeenth offset, the tenth threshold being a second value threshold for a lower priority frequency or a lower priority alien system frequency;

[0141] reducing an eleventh threshold by an eighteenth offset, the eleventh threshold being a first value threshold for a serving cell of a lower priority frequency or a lower priority inter-system frequency;

[0142] The twelfth threshold is increased by a nineteenth offset, where the twelfth threshold is a second value threshold for a serving cell of a lower priority frequency or a lower priority inter-system frequency.

[0143] Exemplarily, the seventh threshold is ThreshX,HighQ, the eighth threshold is ThreshX,HighP, the ninth threshold is ThreshX,lowQ, the tenth threshold is ThreshServing,LowQ, the eleventh threshold is ThreshServing,LowQ, and the twelfth threshold is ThreshServing,LowP.

[0144] The fifth operation includes not performing an access stratum (AS) operation, where the AS operation is an operation related to any of the following: cell search, cell measurement, cell selection, and cell reselection;

[0145] The sixth operation includes at least one of the following:

[0146] Prioritizing the measurement of the frequency of the first cell; for example, always measuring based on a requirement; for another example, if the terminal initiates a measurement of a frequency priority type to which the frequency of the first cell belongs, the terminal first performs the measurement of the frequency of the first cell;

[0147] Prioritizing or reselecting the first cell;

[0148] The first cell is considered to be a suitable cell.

[0149] It should be noted that the offset described in the embodiment of the present application is configured, pre-configured or agreed upon by the network side device. The threshold described in the embodiment of the present application is configured, pre-configured or agreed upon by the network side device.

[0150] Optionally, in the embodiment of the present application, excluding the first cell during the execution of the first operation includes at least one of the following:

[0151] The frequency of the first cell is not measured;

[0152] No reselection evaluation is performed on the first cell; for example, for intra-frequency reselection, no R criterion ranking is performed on cells that only support the store and forward satellite operation mode;

[0153] The first cell is not considered as a candidate cell for cell selection or cell reselection.

[0154] Optionally, in the embodiment of the present application, the prioritizing the measurement of the frequency of the first cell includes at least one of the following:

[0155] The frequency of the first cell is considered to be the frequency with the highest priority;

[0156] Considering that frequencies other than the frequency of the first cell are frequencies with the lowest priority;

[0157] Increasing the priority of the frequency where the first cell is located by an offset of twenty;

[0158] Lowering the priorities of frequencies other than the frequency where the first cell is located by twenty-one offsets;

[0159] Increasing the third threshold by a twenty-second offset, the third threshold being the first value threshold for intra-frequency measurement;

[0160] Increasing the fourth threshold by a twenty-third offset, the fourth threshold being the second value threshold for intra-frequency measurement;

[0161] Increasing a fifth threshold by a twenty-fourth offset, the fifth threshold being a first value threshold for inter-frequency or inter-system frequency measurement;

[0162] The sixth threshold is increased by a twenty-fifth offset, where the sixth threshold is a second value threshold for inter-frequency or inter-system frequency measurement.

[0163] Optionally, in the embodiment of the present application, the preferential selection or reselection of the first cell includes at least one of the following:

[0164] When the frequency of the first cell is different from the serving frequency, the first cell is evaluated first;

[0165] In a case where the frequency of the first cell is the same as the serving frequency or the priority of the frequency of the first cell is equal to the priority of the serving frequency, increasing the R value of the first cell by a twenty-sixth offset;

[0166] When the frequency of the first cell is the same as the serving frequency or the priority of the frequency of the first cell is equal to the priority of the serving frequency, reducing the R values ​​of other cells except the first cell by a twenty-seventh offset, where the frequency of the other cells is the same as the serving frequency;

[0167] When the frequency of the first cell is the same as the serving frequency or the priority of the frequency of the first cell is equal to the priority of the serving frequency, if the R value of the first cell exceeds the thirteenth threshold, the first cell is selected or reselected; for example, the thirteenth threshold may be a threshold agreed upon in the protocol or configured by the network side device, or may be a value that is an offset from the cell with the highest R value, where the offset may be agreed upon in the protocol or configured by the network side device;

[0168] The first value of the first cell is increased by a twenty-eighth offset, the first value being the cell selection reception level value;

[0169] The second value of the first cell is increased by a twenty-ninth offset, the second value being the cell selection quality value;

[0170] When the priority of the frequency of the first cell is higher than the priority of the serving frequency, reducing the seventh threshold by a thirtieth offset, the seventh threshold being a first value threshold for a higher priority frequency or a higher priority alien system frequency;

[0171] When the priority of the frequency of the first cell is higher than the priority of the serving frequency, reducing the eighth threshold by a thirty-first offset, the eighth threshold being a threshold of the second value for the higher priority frequency or the higher priority alien system frequency;

[0172] When the priority of the frequency of the first cell is lower than the priority of the serving frequency, reducing the ninth threshold by a thirty-second offset, the ninth threshold being a first value threshold for a lower priority frequency or a lower priority alien system frequency;

[0173] When the priority of the frequency of the first cell is lower than the priority of the serving frequency, reducing the tenth threshold by a thirty-third offset, the tenth threshold being a second value threshold for the lower priority frequency or the lower priority alien system frequency;

[0174] When the priority of the frequency of the first cell is lower than the priority of the serving frequency, the eleventh threshold is increased by a thirty-fourth offset, where the eleventh threshold is the first value threshold for the serving cell of the lower priority frequency or the lower priority alien system frequency;

[0175] When the priority of the frequency of the first cell is lower than the priority of the service frequency, the twelfth threshold is increased by a thirty-fifth offset, and the twelfth threshold is the second value threshold for the service cell of the lower priority frequency or the lower priority heterosystem frequency.

[0176] The above-mentioned first offset to thirty-fifth offset can be agreed upon by the protocol or configured on the network side.

[0177] Optionally, in an embodiment of the present application, when the terminal is not stationed in any cell, the first operation is the second operation, so that it is not easy for the terminal to select the first cell (for example, the first cell only supports the store and forward satellite operation mode or the first cell supports the default satellite operation mode).

[0178] Optionally, in an embodiment of the present application, when the serving cell of the terminal is the second cell, the first operation includes at least one of the following: a second operation, a third operation, a fourth operation, a fifth operation, and a sixth operation; wherein the second cell supports the default satellite operation mode. In this case, the terminal is already camped in the second cell (e.g., supports the default satellite operation mode) and is unlikely to reselect to the first cell (e.g., the first cell only supports the store and forward satellite operation mode) or is preferentially reselected to the first cell (e.g., the first cell supports the default satellite operation mode).

[0179] Optionally, in an embodiment of the present application, when the serving cell of the terminal is a third cell, the first operation includes at least one of the following: a second operation, a third operation, a fourth operation, a fifth operation, and a sixth operation; wherein the third cell supports a store-and-forward satellite operation mode. Thus, the terminal has already camped on the third cell (e.g., supports the store-and-forward satellite operation mode) and is unlikely to reselect to the first cell (e.g., the first cell is a cell other than the third cell), or preferentially reselects to the first cell (e.g., the first cell supports the store-and-forward satellite operation mode).

[0180] Optionally, in the embodiment of the present application, when the terminal is not camped in any cell, the first operation is the second operation, including at least one of the following:

[0181] In a case where the first cell supports only the store-and-forward satellite mode of operation and the terminal is not camped on any cell, the first operation is the second operation;

[0182] In a case where the first cell supports only the store-and-forward satellite mode of operation, the first condition is satisfied, and the terminal is not camped on any cell, the first operation is the second operation;

[0183] In a case where the first cell supports only the default satellite operation mode and the terminal is not camped on any cell, the first operation is the second operation;

[0184] In a case where the first cell supports only the default satellite operation mode, the second condition is met, and the terminal is not camped on any cell, the first operation is the second operation.

[0185] Optionally, in the embodiment of the present application, when the serving cell of the terminal is the second cell, the first operation includes at least one of the following: a second operation, a third operation, a fourth operation, a fifth operation, and a sixth operation; and includes at least one of the following:

[0186] In a case where the first cell supports only the store-and-forward satellite operation mode and the serving cell of the terminal is the second cell, the first operation includes at least one of the following: the second operation, the third operation, the fourth operation, and the fifth operation;

[0187] When the first cell supports only the store-and-forward satellite operation mode, the serving cell of the terminal is the second cell, and the first condition is met, the first operation includes at least one of the following: the second operation, the third operation, the fourth operation, and the fifth operation;

[0188] In a case where the first cell supports the default satellite operation mode and the serving cell of the terminal is the second cell, the first operation includes a sixth operation;

[0189] When the first cell supports the default satellite operation mode, the serving cell of the terminal is the second cell, and the first condition is met, the first operation includes a sixth operation.

[0190] Optionally, in the embodiment of the present application, when the serving cell of the terminal is the third cell, the first operation includes at least one of the following: a second operation, a third operation, a fourth operation, a fifth operation, and a sixth operation; and includes at least one of the following:

[0191] When the first cell supports only the default satellite mode and the serving cell of the terminal is the third cell, the first operation includes a second operation, a third operation, a fourth operation, and a fifth operation;

[0192] When the first cell supports only the default satellite mode, the serving cell of the terminal is the third cell, and the second condition is met, the first operation includes the second operation, the third operation, the fourth operation, and the fifth operation;

[0193] In a case where the first cell is a cell other than the third cell and the serving cell of the terminal is the third cell, the first operation includes a second operation, a third operation, a fourth operation, and a fifth operation;

[0194] When the first cell is a cell other than the third cell, the serving cell of the terminal is the third cell, and the second condition is met, the first operation includes the second operation, the third operation, the fourth operation, and the fifth operation;

[0195] In a case where the first cell supports a store-and-forward satellite mode of operation and the serving cell of the terminal is a third cell, the first operation includes a sixth operation;

[0196] In a case where the first cell supports the store-and-forward satellite operation mode, the serving cell of the terminal is the third cell, and the second condition is met, the first operation includes a sixth operation.

[0197] Optionally, in the embodiment of the present application, the first condition includes at least one of the following:

[0198] The terminal does not support operations related to store and forward satellite operation mode;

[0199] The terminal does not initiate services related to storage and forwarding;

[0200] The terminal is in a first operating mode, where the first operating mode is capable of communicating only in a cell supporting a default satellite operating mode;

[0201] The terminal is not in the second operation mode, and the second operation mode is to communicate only in cells that support the store and forward satellite operation mode.

[0202] Optionally, in the embodiment of the present application, the second condition includes at least one of the following:

[0203] The terminal has initiated services related to storage and forwarding;

[0204] The terminal is initiating services related to storage and forwarding;

[0205] There are services related to storage and forwarding to be initiated;

[0206] The terminal is in a second operating mode, where the second operating mode is capable of communicating only in a cell supporting a store-and-forward satellite operating mode;

[0207] The terminal is not in the first operating mode, where the first operating mode is capable of communicating only in cells supporting the default satellite operating mode;

[0208] The cell where the terminal previously resided or currently resides supports the store-and-forward satellite mode of operation;

[0209] The terminal has initiated an uplink transmission in the cell supporting the store and forward satellite operation mode where it previously resided or currently resides;

[0210] The terminal has successfully established a connection with a cell that supports store-and-forward satellite operation mode;

[0211] The terminal is waiting for downlink transmission from the cell supporting the store and forward satellite operation mode in which it previously resided or is currently residing.

[0212] Optionally, in an embodiment of the present application, the first information is used to indicate a satellite operation mode; the step 202 may be implemented specifically through the following step 202a1 or step 202a2.

[0213] Step 202a: When the first cell supports only the store-and-forward satellite operation mode, the terminal performs at least one of the following: the second operation, the third operation, the fourth operation, the fifth operation, and the sixth operation.

[0214] Step 202b: When the first cell supports only the store-and-forward satellite operation mode and the first condition is met, the terminal performs at least one of the following: the second operation, the third operation, the fourth operation, and the fifth operation.

[0215] In the embodiment of the present application, the first condition includes at least one of the following:

[0216] The terminal does not support operations related to store and forward satellite operation mode;

[0217] The terminal does not initiate services related to storage and forwarding;

[0218] The terminal is in a first operating mode, where the first operating mode is capable of communicating only in a cell supporting a default satellite operating mode;

[0219] The terminal is not in the second operation mode, which is to communicate only in cells that support the store and forward satellite operation mode.

[0220] It can be understood that the first operation mode is associated with the default satellite operation mode, that is, the terminal in the first operation mode can only communicate in cells that support the default satellite operation mode. The second operation mode is associated with the store-and-forward satellite operation mode, that is, the terminal in the second operation mode can only communicate in cells that support the store-and-forward satellite operation mode.

[0221] Optionally, in an embodiment of the present application, the cells supporting the default satellite operation mode may include at least one of the following: a geosynchronous satellite orbit (GSO) cell, a GEO cell, a LEO cell, a MEO cell, and a terrestrial network (TN) cell.

[0222] Optionally, in an embodiment of the present application, the AS of the terminal determines whether to initiate a service related to storage and forwarding, or determines the operating mode of the terminal. Alternatively, the Non-Access Stratum (NAS) of the terminal determines whether to initiate a service related to storage and forwarding, or determines the operating mode of the terminal.

[0223] Optionally, in an embodiment of the present application, the NAS instructs the AS to perform at least one of the following: initiating or not initiating services related to storage and forwarding; initiating or not initiating services related to the default satellite operation mode.

[0224] This makes it less likely for the terminal to select or reselect to a cell that only supports the store and forward satellite mode of operation.

[0225] Optionally, in an embodiment of the present application, the first information is used to indicate a satellite operation mode; the step 202 may be implemented specifically through the following step 202a3 or step 202a4.

[0226] Step 202a3: When the first cell supports only the default satellite operation mode, the terminal performs at least one of the following: the second operation, the third operation, the fourth operation, and the fifth operation.

[0227] Step 202a4: When the first cell supports only the default satellite operation mode and the second condition is met, the terminal performs at least one of the following: the second operation, the third operation, the fourth operation, and the fifth operation.

[0228] In the embodiment of the present application, the second condition includes at least one of the following:

[0229] The terminal has initiated services related to storage and forwarding;

[0230] The terminal is initiating services related to storage and forwarding;

[0231] There are services related to storage and forwarding to be initiated;

[0232] The terminal is in a second operating mode, the second operating mode being capable of communicating only in a cell supporting a store and forward satellite operating mode;

[0233] The terminal is not in the first operation mode, where the first operation mode is to communicate only in a cell supporting the default satellite operation mode.

[0234] In this way, it is not easy for a terminal that has camped on a cell supporting the store and forward satellite operation mode to reselect a cell supporting the default satellite operation mode.

[0235] Optionally, in an embodiment of the present application, the first information is used to indicate a satellite operation mode; the step 202 may be implemented specifically through the following step 202a5 or step 202a6.

[0236] Step 202a5: When the first cell is the third cell, the terminal performs at least one of the following: the second operation, the third operation, the fourth operation, the fifth operation, and the sixth operation.

[0237] Step 202a6: When the first cell is the third cell and the third condition is met, the terminal performs at least one of the following: the second operation, the third operation, the fourth operation, the fifth operation, and the sixth operation.

[0238] In an embodiment of the present application, the third cell supports a store-and-forward satellite operation mode. The third condition includes at least one of the following:

[0239] The cell where the terminal previously resided or currently resides supports the store-and-forward satellite mode of operation;

[0240] The terminal has initiated an uplink transmission on a cell supporting store and forward satellite operation mode in which it previously resided or is currently residing. For example, the terminal has initiated a connection establishment request on the cell, such as sending an initial NAS message.

[0241] The terminal has successfully established a connection with the first cell; for example, the terminal has successfully completed a radio resource control (RRC) connection establishment process;

[0242] The terminal is waiting for downlink transmission from a cell supporting the store and forward satellite operation mode in which it previously resided or is currently residing; for example, it is waiting for downlink NAS message transmission.

[0243] Optionally, in an embodiment of the present application, the first information is used to indicate the time when the satellite is connected to the ground gateway; the step 202 can be specifically implemented through the following step 202b1.

[0244] Step 202b1: If the first information satisfies the fourth condition, the terminal performs a sixth operation;

[0245] The fourth condition includes at least one of the following:

[0246] The interval between the current time and the time indicated by the first information is less than or equal to a fourteenth threshold;

[0247] The interval between the current time and the time indicated by the first information is the minimum time interval in the neighboring cells of the terminal.

[0248] Optionally, in an embodiment of the present application, the first information is used to indicate the time when the satellite is connected to the ground gateway; the step 202 can be implemented specifically through the following step 202b2 or step 202b3.

[0249] Step 202b2: When the interval between the current time and the time indicated by the first information is greater than or equal to the fifteenth threshold, the terminal performs at least one of the following: the second operation, the third operation, and the fourth operation.

[0250] Step 202b3: When the interval between the current time and the time indicated by the first information is greater than or equal to the fifteen-day threshold and the second condition is met, the terminal performs at least one of the following: the second operation, the third operation, and the fourth operation.

[0251] In the embodiment of the present application, the second condition includes at least one of the following:

[0252] Services related to storage and forwarding that have been initiated, are being initiated, or are to be initiated by the terminal;

[0253] The terminal is in a second operating mode, where the second operating mode is capable of communicating only in a cell supporting a store-and-forward satellite operating mode;

[0254] The terminal is not in the first operation mode, where the first operation mode is to communicate only in a cell supporting the default satellite operation mode.

[0255] Optionally, in an embodiment of the present application, the first information is used to indicate the time when the cell stops serving; the step 202 can be specifically implemented by the following step 202c1 or step 202c2.

[0256] Step 202c1: When the first information satisfies the fifth condition, the terminal performs a sixth operation.

[0257] Step 202c2: When the interval between the current time and the time indicated by the first information is less than or equal to the sixteenth threshold, the terminal performs at least one of the following: the second operation, the third operation, and the fourth operation.

[0258] In the embodiment of the present application, the fifth condition includes at least one of the following:

[0259] The interval between the current system time and the time indicated by the first information is greater than or equal to the sixteenth threshold;

[0260] The interval between the current system time and the time indicated by the first information is the maximum time interval in the neighboring cells of the terminal.

[0261] Optionally, in an embodiment of the present application, the first information is used to indicate a time for the cell to store data; the step 202 can be specifically implemented through the following step 202d1 or step 202d2.

[0262] Step 202d1: When the first information satisfies the sixth condition, the terminal performs a sixth operation.

[0263] Step 202d2: When the first information satisfies the seventh condition, the terminal performs at least one of the following: the second operation, the third operation, and the fourth operation.

[0264] In the embodiment of the present application, the sixth condition includes at least one of the following:

[0265] The start time of cell data storage has arrived;

[0266] The end time of cell data storage has not arrived;

[0267] The seventh condition includes at least one of the following:

[0268] The start time of cell data storage has not arrived;

[0269] The interval between the current time and the end time of the cell storing the signal data is less than or equal to the seventeenth threshold.

[0270] Optionally, in the embodiment of the present application, the end time of storing the signaling or data in the cell has not arrived, including:

[0271] The interval between the current time and the end time of the cell data storage is greater than or equal to the seventeenth threshold;

[0272] The interval between the current system time and the end time of storing signaling or data in the cell is the maximum time interval among the neighboring cells of the terminal.

[0273] Optionally, in an embodiment of the present application, the first information is used to indicate the amount of data that can be stored in the cell; the step 202 can be specifically implemented through the following step 202e1 or step 202e2.

[0274] Step 202e1: When the first information satisfies the eighth condition, the terminal performs the sixth operation.

[0275] Step 202e2: When the first information satisfies the ninth condition, the terminal performs at least one of the following: the second operation, the third operation, and the fourth operation.

[0276] In the embodiment of the present application, the eighth condition includes at least one of the following:

[0277] The remaining storage space of the cell is greater than or equal to the eighteenth threshold;

[0278] The remaining storage space of the cell is greater than or equal to the first data volume of the terminal;

[0279] The first data volume of the terminal is less than or equal to the first threshold;

[0280] The second data volume of the terminal is greater than or equal to the second threshold;

[0281] The ninth condition includes at least one of the following:

[0282] The remaining storage space of the cell is less than or equal to the eighteenth threshold;

[0283] The remaining storage space of the cell is less than or equal to the first data volume of the terminal;

[0284] The first data volume includes at least one of the following: the data volume available to the terminal; and the data volume to be sent by the terminal.

[0285] Optionally, in an embodiment of the present application, the first information is used to indicate the service type supported by the cell; the step 202 can be specifically implemented through the following step 202f1 or step 202f2.

[0286] Step 202f1: When the service type initiated by the terminal matches the service type supported by the first cell, the terminal performs a sixth operation.

[0287] Optionally, in the embodiment of the present application, the service type initiated by the terminal matches the service type supported by the first cell, including at least one of the following:

[0288] The service type initiated by the terminal overlaps with the service type supported by the first cell;

[0289] The service type initiated by the terminal is a subset of the service types supported by the first cell.

[0290] It should be noted that the service type initiated by the terminal described in the embodiments of the present application can be understood as: the service type that the terminal is initiating, to be initiated, or has already initiated.

[0291] Step 202f2: When the service type initiated by the terminal does not match the service type supported by the first cell, the terminal performs at least one of the following: the second operation, the third operation, and the fourth operation.

[0292] Optionally, in an embodiment of the present application, the service type initiated by the terminal does not match the service type supported by the first cell, including: the intersection of the service type initiated by the terminal and the service type supported by the first cell is empty.

[0293] Optionally, in an embodiment of the present application, the service type initiated by the terminal is determined by the AS or the NAS. If determined by the NAS, the NAS indicates the service type initiated by the terminal to the AS.

[0294] Optionally, in an embodiment of the present application, the first information is used to indicate the forwarding priority of the service type supported by the cell; the step 202 can be implemented by any one of the following steps 202g1 to 202g4.

[0295] Step 202g1: When the forwarding priority corresponding to the service type initiated by the terminal is higher than or equal to the nineteenth threshold, the terminal performs the sixth operation.

[0296] Step 202g2: When the forwarding priority corresponding to the service type initiated by the terminal is the highest priority, the terminal performs the sixth operation.

[0297] Step 202g3: When the forwarding priority corresponding to the service type initiated by the terminal is lower than or equal to the nineteenth threshold, the terminal performs at least one of the following: the second operation, the third operation, and the fourth operation.

[0298] Step 202g4: When the forwarding priority corresponding to the service type being initiated, to be initiated, or already initiated by the terminal is the lowest priority, the terminal performs at least one of the following: the second operation, the third operation, or the fourth operation.

[0299] Optionally, in an embodiment of the present application, in combination with FIG. 2 , as shown in FIG. 3 , the above step 202 may be specifically implemented through the following step 202h.

[0300] Step 202h: The terminal performs a first operation in the first area based on the first information.

[0301] In the embodiment of the present application, the first region includes at least one of the following:

[0302] an area indicated by at least one tracking area identifier;

[0303] an area indicated by at least one tracking area code;

[0304] At least one geographic region.

[0305] Optionally, in an embodiment of the present application, the first area is configured by a network-side device or agreed upon by a protocol.

[0306] Optionally, in an embodiment of the present application, the at least one geographical area may be determined by a reference point (geographic coordinate point) and a distance threshold identifier, or by multiple coordinate point identifiers.

[0307] An embodiment of the present application provides a cell selection method, in which a terminal can perform a first operation based on first information about a first cell, where the first operation is an operation related to cell selection or cell reselection. In this solution, when a cell supporting a default satellite operation mode coexists with a cell supporting a store-and-forward satellite operation mode, the terminal can use the relevant information about the first cell to perform an operation related to cell selection or reselection, enabling the terminal to select or reselect an appropriate cell, thereby ensuring communication reliability of the terminal.

[0308] The present invention provides a cell selection method, and Figure 4 shows a flowchart of the cell selection method provided by the present invention. As shown in Figure 4, the cell selection method provided by the present invention may include the following steps 301 to 303.

[0309] Step 301: A network-side device sends first information of a first cell to a terminal.

[0310] In the embodiment of the present application, the first information is used to perform a first operation, which is an operation related to cell selection or cell reselection. The first information is used to indicate at least one of the following:

[0311] The satellite operation mode of the cell;

[0312] The time it takes for the satellite to connect with the ground gateway;

[0313] The time when the cell service is stopped;

[0314] The time the cell stores data;

[0315] The amount of data that the cell can store;

[0316] a first threshold value, the first threshold value being related to a maximum first data volume of a cell that can be selected or reselected by the terminal;

[0317] a second threshold value, the second threshold value being related to a minimum first data amount of a cell that can be selected or reselected by the terminal;

[0318] Types of services supported by the cell;

[0319] Forwarding priority of the service type supported by the cell.

[0320] The first data volume mentioned above includes at least one of the following: the data volume available to the terminal; and the data volume to be sent by the terminal.

[0321] Step 302: The terminal receives first information from a network-side device.

[0322] Step 303: The terminal performs a first operation based on the first information.

[0323] Optionally, in an embodiment of the present application, the first information is used to indicate a satellite operation mode, and the satellite operation mode includes at least one of the following: a default satellite operation mode, a store and forward satellite operation mode;

[0324] The default satellite operation mode includes at least one of the following:

[0325] The cell's service link and feedback link are both available;

[0326] Satellite connectivity to the terrestrial gateway is available;

[0327] The cell supports end-to-end connectivity;

[0328] Store and forward satellite mode of operation including at least one of the following:

[0329] The serving link of the cell is available, and the feedback link of the cell is unavailable;

[0330] The satellite's connection to the ground gateway is unavailable;

[0331] The cell only supports terminal-to-satellite connections;

[0332] The cell does not support end-to-end connectivity.

[0333] Optionally, in an embodiment of the present application, the first information is used to indicate the time when the satellite is connected to the ground gateway;

[0334] The first information includes at least one of the following: time information when the feedback link is available; time information when both the service link and the feedback link are available; time information when the connection between the satellite and the ground gateway is available; and time information when the end-to-end connection is available.

[0335] Optionally, in an embodiment of the present application, the first information is used to indicate the time when the cell stops serving;

[0336] The first information includes at least one of the following: time information when the service link is unavailable; time information when the feedback link is unavailable; and time information when the cell stops serving the current coverage area.

[0337] Optionally, in an embodiment of the present application, the first information is used to indicate the amount of data that can be stored in the cell;

[0338] The first information includes at least one of the following: information on the total amount of data that can be stored in the cell; information on the amount of data that can be stored in the cell; and information on the amount of data that has been used and can be stored in the cell.

[0339] It should be noted that, for the first information, the first operation and related solutions involved in the network side device, please refer to the description in the above embodiment, and no further details will be given here.

[0340] An embodiment of the present application provides a cell selection method, in which a network-side device can send first information about a first cell to a terminal, so that the terminal can perform a first operation based on the first information about the first cell, where the first operation is an operation related to cell selection or cell reselection. In this solution, when a cell supporting a default satellite operation mode coexists with a cell supporting a store-and-forward satellite operation mode, the terminal can use the relevant information about the first cell from the network-side device to perform an operation related to cell selection or reselection, so that the terminal can select or reselect an appropriate cell, thereby ensuring communication reliability of the terminal.

[0341] Each of the above-mentioned method embodiments, or various possible implementation methods in each method embodiment, can be executed separately, or any two or more of them can be executed in combination with each other. The specific implementation can be determined according to actual usage requirements, and the embodiments of this application do not limit this.

[0342] The cell selection method provided in the embodiment of the present application may be performed by a cell selection device. In the embodiment of the present application, the cell selection device provided in the embodiment of the present application is described by taking the cell selection method performed by the cell selection device as an example.

[0343] FIG5 shows a possible structural diagram of a cell selection device involved in an embodiment of the present application. As shown in FIG5 , the cell selection device 40 may include: an acquisition module 41 and an execution module 42 .

[0344] The acquisition module 41 is configured to acquire first information of the first cell. The execution module 42 is configured to execute a first operation based on the first information acquired by the acquisition module 41. The first operation is an operation related to cell selection or cell reselection; the first information is configured to indicate at least one of the following: the satellite operation mode of the cell; the time when the satellite is connected to the ground gateway; the time when the cell stops service; the time when the cell stores data; the amount of data that the cell can store; a first threshold value, the first threshold value is related to the maximum amount of first data of the cell that the terminal can select or reselect; a second threshold value, the second threshold value is related to the minimum amount of first data of the cell that the terminal can select or reselect; the service type supported by the cell; the forwarding priority of the service type supported by the cell; the first data amount includes at least one of the following: the amount of data available to the terminal; the amount of data to be sent by the terminal.

[0345] In a possible implementation, the first information is used to indicate a satellite operation mode, where the satellite operation mode includes at least one of the following: a default satellite operation mode, a store and forward satellite operation mode;

[0346] The default satellite operation mode includes at least one of the following:

[0347] The cell's service link and feedback link are both available;

[0348] Satellite connectivity to the terrestrial gateway is available;

[0349] The cell supports end-to-end connectivity;

[0350] Store and forward satellite mode of operation including at least one of the following:

[0351] The serving link of the cell is available, and the feedback link of the cell is unavailable;

[0352] The satellite's connection to the ground gateway is unavailable;

[0353] The cell only supports terminal-to-satellite connections;

[0354] The cell does not support end-to-end connectivity.

[0355] In one possible implementation, the first information is used to indicate the time when the satellite is connected to the ground gateway; the first information includes at least one of the following:

[0356] Feedback link availability time information;

[0357] Time information when both the service link and the feedback link are available;

[0358] Time information available for satellite connections to ground gateways;

[0359] Time information available for the end-to-end connection.

[0360] In one possible implementation, the first information is used to indicate the time when the cell stops serving; the first information includes at least one of the following:

[0361] Time information when the service link is unavailable;

[0362] Feedback link unavailable time information;

[0363] The time information when the cell stops serving the current coverage area.

[0364] In one possible implementation, the first information is used to indicate an amount of data that can be stored in the cell; the first information includes at least one of the following:

[0365] The total amount of data that can be stored in the cell;

[0366] The remaining storable data volume of the cell;

[0367] The cell has used information about the amount of data that can be stored.

[0368] In a possible implementation, the first operation includes at least one of the following: a second operation, a third operation, a fourth operation, a fifth operation, and a sixth operation;

[0369] The second operation includes at least one of the following:

[0370] The first cell is not considered to be a suitable cell;

[0371] Deeming the first cell to be an acceptable cell;

[0372] The first cell is considered to be prohibited;

[0373] not considering the first cell as a candidate cell for the first operation;

[0374] The third operation includes at least one of the following:

[0375] The service frequency is considered to be the highest priority frequency;

[0376] Frequencies other than the service frequency are considered to be frequencies of lowest priority;

[0377] Increasing the priority of the service frequency by a first offset;

[0378] reducing the priority of frequencies other than the service frequency by a second offset;

[0379] The first value of the serving cell is increased by a third offset, where the first value is a cell selection reception level value;

[0380] The second value of the serving cell is increased by a fourth offset, and the second value is the cell selection quality value;

[0381] reducing the third threshold by a fifth offset, where the third threshold is the first value threshold for intra-frequency measurement;

[0382] reducing the fourth threshold by a sixth offset, where the fourth threshold is the second value threshold for intra-frequency measurement;

[0383] reducing the fifth threshold by a seventh offset, where the fifth threshold is a first value threshold for inter-frequency or inter-system frequency measurement;

[0384] reducing the sixth threshold by an eighth offset, where the sixth threshold is a second value threshold for inter-frequency or inter-system frequency measurement;

[0385] The fourth operation includes at least one of the following:

[0386] excluding the first cell during the execution of the first operation;

[0387] When the first cell is not a serving cell of the terminal and the frequency of the first cell is the same as the serving frequency, reducing the R value of the first cell by a ninth offset;

[0388] The first value of the first cell is reduced by a tenth offset, and the first value is the cell selection reception level value;

[0389] The second value of the first cell is reduced by an eleventh offset, and the second value is the cell selection quality value;

[0390] The first value of the serving cell is increased by a twelfth offset, and the first value is the cell selection reception level value;

[0391] The second value of the serving cell is increased by a thirteenth offset, and the second value is the cell selection quality value;

[0392] Increasing the seventh threshold by a fourteenth offset, the seventh threshold being a first value threshold for a higher priority frequency or a higher priority alien system frequency;

[0393] increasing the eighth threshold by a fifteenth offset, the eighth threshold being a second value threshold for a higher priority frequency or a higher priority alien system frequency;

[0394] Increasing the ninth threshold by a sixteenth offset, the ninth threshold being a first value threshold for a lower priority frequency or a lower priority alien system frequency;

[0395] Increasing the tenth threshold by a seventeenth offset, the tenth threshold being a second value threshold for a lower priority frequency or a lower priority alien system frequency;

[0396] reducing the eleventh threshold by an eighteenth offset, the eleventh threshold being a first value threshold for a serving cell of a lower priority frequency or a lower priority inter-system frequency;

[0397] The twelfth threshold is increased by a nineteenth offset, where the twelfth threshold is a second value threshold for a serving cell with a lower priority frequency or a lower priority inter-system frequency;

[0398] The fifth operation includes not performing an AS operation, where the AS operation is an operation related to any of the following: cell search, cell measurement, cell selection, and cell reselection;

[0399] The sixth operation includes at least one of the following:

[0400] Prioritizing the measurement of the frequency of the first cell;

[0401] Prioritizing or reselecting the first cell;

[0402] The first cell is considered to be a suitable cell.

[0403] In a possible implementation, excluding the first cell during the execution of the first operation includes at least one of the following:

[0404] The frequency of the first cell is not measured;

[0405] Not performing reselection evaluation on the first cell;

[0406] The first cell is not considered as a candidate cell for cell selection or cell reselection.

[0407] In a possible implementation, the prioritizing measurement of the frequency of the first cell includes at least one of the following:

[0408] The frequency of the first cell is considered to be the frequency with the highest priority;

[0409] Considering that frequencies other than the frequency of the first cell are frequencies with the lowest priority;

[0410] Increasing the priority of the frequency where the first cell is located by an offset of twenty;

[0411] Lowering the priorities of frequencies other than the frequency where the first cell is located by twenty-one offsets;

[0412] Increasing the third threshold by a twenty-second offset, where the third threshold is the first value threshold for intra-frequency measurement;

[0413] Increasing the fourth threshold by a twenty-third offset, where the fourth threshold is the second value threshold for intra-frequency measurement;

[0414] Increasing the fifth threshold by a twenty-fourth offset, where the fifth threshold is a first value threshold for inter-frequency or inter-system frequency measurement;

[0415] The sixth threshold is increased by a twenty-fifth offset, and the sixth threshold is a second value threshold for inter-frequency or inter-system frequency measurement.

[0416] In a possible implementation, the preferentially selecting or reselecting the first cell includes at least one of the following:

[0417] When the frequency of the first cell is different from the serving frequency, the first cell is evaluated first;

[0418] In a case where the frequency of the first cell is the same as the serving frequency or the priority of the frequency of the first cell is equal to the priority of the serving frequency, increasing the R value of the first cell by a twenty-sixth offset;

[0419] When the frequency of the first cell is the same as the serving frequency or the priority of the frequency of the first cell is equal to the priority of the serving frequency, the R values ​​of the other cells except the first cell are reduced by the twenty-seventh offset, and the frequencies of the other cells are the same as the serving frequency;

[0420] When the frequency of the first cell is the same as the serving frequency or the priority of the frequency of the first cell is equal to the priority of the serving frequency, if the R value of the first cell exceeds the thirteenth threshold, the first cell is selected or reselected; for example, the first threshold may be a threshold agreed upon in the protocol or configured by the network side device, or may be a value that differs from the cell with the highest R value by an offset, where the offset may be agreed upon in the protocol or configured by the network side device;

[0421] The first value of the first cell is increased by a twenty-eighth offset, the first value being the cell selection reception level value;

[0422] The second value of the first cell is increased by a twenty-ninth offset, the second value being the cell selection quality value;

[0423] When the priority of the frequency of the first cell is higher than the priority of the serving frequency, reducing the seventh threshold by a thirtieth offset, the seventh threshold being a first value threshold for a higher priority frequency or a higher priority alien system frequency;

[0424] When the priority of the frequency of the first cell is higher than the priority of the serving frequency, reducing the eighth threshold by a thirty-first offset, the eighth threshold being a threshold of the second value for the higher priority frequency or the higher priority alien system frequency;

[0425] When the priority of the frequency of the first cell is lower than the priority of the serving frequency, reducing the ninth threshold by a thirty-second offset, the ninth threshold being a first value threshold for a lower priority frequency or a lower priority alien system frequency;

[0426] When the priority of the frequency of the first cell is lower than the priority of the serving frequency, reducing the tenth threshold by a thirty-third offset, the tenth threshold being a second value threshold for the lower priority frequency or the lower priority alien system frequency;

[0427] When the priority of the frequency of the first cell is lower than the priority of the serving frequency, the eleventh threshold is increased by a thirty-fourth offset, where the eleventh threshold is the first value threshold for the serving cell of the lower priority frequency or the lower priority alien system frequency;

[0428] When the priority of the frequency of the first cell is lower than the priority of the service frequency, the twelfth threshold is increased by a thirty-fifth offset, and the twelfth threshold is the second value threshold for the service cell of the lower priority frequency or the lower priority heterosystem frequency.

[0429] In a possible implementation, when the terminal is not camped in any cell, the first operation is the second operation; or,

[0430] In the case where the serving cell of the terminal is the second cell, the first operation includes at least one of the following: the second operation, the third operation, the fourth operation, the fifth operation, and the sixth operation; wherein the second cell supports the default satellite operation mode; or,

[0431] In the case that the serving cell of the terminal is the third cell, the above-mentioned first operation includes at least one of the following: the second operation, the third operation, the fourth operation, the fifth operation, and the sixth operation; wherein the third cell supports the store and forward satellite operation mode.

[0432] In a possible implementation, when the terminal is not camped on any cell, the first operation is the second operation, including at least one of the following:

[0433] In a case where the first cell supports only the store-and-forward satellite mode of operation and the terminal is not camped on any cell, the first operation is the second operation;

[0434] In a case where the first cell supports only the store-and-forward satellite mode of operation, the first condition is satisfied, and the terminal is not camped on any cell, the first operation is the second operation;

[0435] In a case where the first cell supports only the default satellite operation mode and the terminal is not camped on any cell, the first operation is the second operation;

[0436] In a case where the first cell supports only the default satellite operation mode, the second condition is met, and the terminal is not camped on any cell, the first operation is the second operation.

[0437] In a possible implementation, when the serving cell of the terminal is the second cell, the first operation includes at least one of the following: a second operation, a third operation, a fourth operation, a fifth operation, and a sixth operation; and includes at least one of the following:

[0438] In a case where the first cell supports only the store-and-forward satellite operation mode and the serving cell of the terminal is the second cell, the first operation includes at least one of the following: the second operation, the third operation, the fourth operation, and the fifth operation;

[0439] When the first cell supports only the store-and-forward satellite operation mode, the serving cell of the terminal is the second cell, and the first condition is met, the first operation includes at least one of the following: the second operation, the third operation, the fourth operation, and the fifth operation;

[0440] In a case where the first cell supports the default satellite operation mode and the serving cell of the terminal is the second cell, the first operation includes a sixth operation;

[0441] When the first cell supports the default satellite operation mode, the serving cell of the terminal is the second cell, and the first condition is met, the first operation includes a sixth operation.

[0442] In a possible implementation, when the serving cell of the terminal is the third cell, the first operation includes at least one of the following: a second operation, a third operation, a fourth operation, a fifth operation, and a sixth operation; and includes at least one of the following:

[0443] When the first cell supports only the default satellite mode and the serving cell of the terminal is the third cell, the first operation includes a second operation, a third operation, a fourth operation, and a fifth operation;

[0444] When the first cell supports only the default satellite mode, the serving cell of the terminal is the third cell, and the second condition is met, the first operation includes the second operation, the third operation, the fourth operation, and the fifth operation;

[0445] In a case where the first cell is a cell other than the third cell and the serving cell of the terminal is the third cell, the first operation includes a second operation, a third operation, a fourth operation, and a fifth operation;

[0446] When the first cell is a cell other than the third cell, the serving cell of the terminal is the third cell, and the second condition is met, the first operation includes the second operation, the third operation, the fourth operation, and the fifth operation;

[0447] In a case where the first cell supports a store-and-forward satellite mode of operation and the serving cell of the terminal is a third cell, the first operation includes a sixth operation;

[0448] In a case where the first cell supports the store-and-forward satellite operation mode, the serving cell of the terminal is the third cell, and the second condition is met, the first operation includes a sixth operation.

[0449] In one possible implementation, the first condition includes at least one of the following:

[0450] The terminal does not support operations related to store and forward satellite operation mode;

[0451] The terminal does not initiate services related to storage and forwarding;

[0452] The terminal is in a first operating mode, where the first operating mode is capable of communicating only in a cell supporting a default satellite operating mode;

[0453] The terminal is not in the second operating mode, the second operating mode being capable of communicating only in cells supporting the store-and-forward satellite operating mode;

[0454] The second condition mentioned above includes at least one of the following:

[0455] The terminal has initiated services related to storage and forwarding;

[0456] The terminal is initiating services related to storage and forwarding;

[0457] There are services related to storage and forwarding to be initiated;

[0458] The terminal is in a second operating mode, where the second operating mode is capable of communicating only in a cell supporting a store-and-forward satellite operating mode;

[0459] The terminal is not in the first operating mode, where the first operating mode is capable of communicating only in cells supporting the default satellite operating mode;

[0460] The cell where the terminal previously resided or currently resides supports the store-and-forward satellite mode of operation;

[0461] The terminal has initiated an uplink transmission in the cell supporting the store and forward satellite operation mode where it previously resided or currently resides;

[0462] The terminal has successfully established a connection with a cell that supports store-and-forward satellite operation mode;

[0463] The terminal is waiting for downlink transmission from the cell supporting the store and forward satellite operation mode in which it previously resided or is currently residing.

[0464] In a possible implementation, the first information is used to indicate a satellite operation mode; and the execution module 42 is specifically configured to:

[0465] In the case where the first cell only supports the store-and-forward satellite operation mode, performing at least one of the following: the second operation, the third operation, the fourth operation, the fifth operation, and the sixth operation; or

[0466] When the first cell supports only the store-and-forward satellite operation mode and the first condition is met, performing at least one of the following: the second operation, the third operation, the fourth operation, and the fifth operation;

[0467] The first condition includes at least one of the following:

[0468] The terminal does not support operations related to store and forward satellite operation mode;

[0469] The terminal does not initiate services related to storage and forwarding;

[0470] The terminal is in a first operating mode, where the first operating mode is capable of communicating only in a cell supporting a default satellite operating mode;

[0471] The terminal is not in the second operation mode, and the second operation mode is to communicate only in cells that support the store and forward satellite operation mode.

[0472] In a possible implementation, the first information is used to indicate a satellite operation mode; and the execution module 42 is specifically configured to:

[0473] In a case where the first cell supports only the default satellite operation mode, performing at least one of the following: the second operation, the third operation, the fourth operation, or the fifth operation; or

[0474] When the first cell supports only the default satellite operation mode and the second condition is met, perform at least one of the following: the second operation, the third operation, the fourth operation, and the fifth operation;

[0475] The second condition includes at least one of the following:

[0476] The terminal has initiated services related to storage and forwarding;

[0477] The terminal is initiating services related to storage and forwarding;

[0478] There are services related to storage and forwarding to be initiated;

[0479] The terminal is in a second operating mode, where the second operating mode is capable of communicating only in a cell supporting a store-and-forward satellite operating mode;

[0480] The terminal is not in the first operation mode, where the first operation mode is to communicate only in a cell supporting the default satellite operation mode.

[0481] In a possible implementation, the first information is used to indicate a satellite operation mode; and the execution module 42 is specifically configured to:

[0482] In the case where the first cell is the third cell, performing at least one of the following: the second operation, the third operation, the fourth operation, the fifth operation, and the sixth operation; or,

[0483] When the first cell is the third cell and the third condition is met, perform at least one of the following: the second operation, the third operation, the fourth operation, the fifth operation, and the sixth operation;

[0484] The third cell supports a store-and-forward satellite operation mode; and the third condition includes at least one of the following:

[0485] The cell where the terminal previously resided or currently resides supports the store-and-forward satellite mode of operation;

[0486] The terminal has initiated an uplink transmission in the cell supporting the store and forward satellite operation mode where it previously resided or currently resides;

[0487] The terminal has successfully established a connection with the first cell;

[0488] The terminal is waiting for downlink transmission from the cell supporting the store and forward satellite operation mode in which it previously resided or is currently residing.

[0489] In a possible implementation, the first information is used to indicate the time when the satellite is connected to the ground gateway; the execution module 42 is specifically configured to execute the sixth operation if the first information satisfies the fourth condition;

[0490] The fourth condition includes at least one of the following:

[0491] The interval between the current time and the time indicated by the first information is less than or equal to a fourteenth threshold;

[0492] The interval between the current time and the time indicated by the first information is the minimum time interval in the neighboring cells of the terminal.

[0493] In a possible implementation, the first information is used to indicate the time when the satellite is connected to the ground gateway; and the execution module 42 is specifically configured to:

[0494] If the interval between the current time and the time indicated by the first information is greater than or equal to the fifteenth threshold, perform at least one of the following: the second operation, the third operation, or the fourth operation; or

[0495] When the interval between the current time and the time indicated by the first information is greater than or equal to the fifteen-day threshold and the second condition is met, performing at least one of the following: the second operation, the third operation, and the fourth operation;

[0496] The second condition includes at least one of the following:

[0497] Services related to storage and forwarding that have been initiated, are being initiated, or are to be initiated by the terminal;

[0498] The terminal is in a second operating mode, where the second operating mode is capable of communicating only in a cell supporting a store-and-forward satellite operating mode;

[0499] The terminal is not in the first operation mode, where the first operation mode is to communicate only in a cell supporting the default satellite operation mode.

[0500] In one possible implementation, the first information indicates a time when the cell stops serving; the execution module 42 is specifically configured to: if the first information satisfies a fifth condition, perform a sixth operation; or, if a time interval between the current time and the time indicated by the first information is less than or equal to a sixteenth threshold, perform at least one of the following: the second operation, the third operation, or the fourth operation;

[0501] The fifth condition includes at least one of the following:

[0502] The interval between the current system time and the time indicated by the first information is greater than or equal to the sixteenth threshold;

[0503] The interval between the current system time and the time indicated by the first information is the maximum time interval in the neighboring cells of the terminal.

[0504] In one possible implementation, the first information is used to indicate a time period for storing data in the cell; the execution module 42 is specifically configured to: if the first information satisfies a sixth condition, perform a sixth operation; or, if the first information satisfies a seventh condition, perform at least one of the following: the second operation, the third operation, or the fourth operation;

[0505] The sixth condition includes at least one of the following:

[0506] The start time of cell data storage has arrived;

[0507] The end time of cell data storage has not arrived;

[0508] The seventh condition includes at least one of the following:

[0509] The start time of cell data storage has not arrived;

[0510] The interval between the current time and the end time of the cell storing the signal data is less than or equal to the seventeenth threshold.

[0511] In a possible implementation, the cell not reaching an end time for storing the signaling or data includes:

[0512] The interval between the current time and the end time of the cell data storage is greater than or equal to the seventeenth threshold;

[0513] The interval between the current system time and the end time of storing signaling or data in the cell is the maximum time interval among the neighboring cells of the terminal.

[0514] In one possible implementation, the first information is used to indicate an amount of data that can be stored in the cell; the execution module 42 is specifically configured to: if the first information satisfies the eighth condition, perform the sixth operation; or, if the first information satisfies the ninth condition, perform at least one of the following: the second operation, the third operation, or the fourth operation;

[0515] The eighth condition includes at least one of the following:

[0516] The remaining storage space of the cell is greater than or equal to the eighteenth threshold;

[0517] The remaining storage space of the cell is greater than or equal to the first data volume of the terminal;

[0518] The first data volume of the terminal is less than or equal to the first threshold;

[0519] The second data volume of the terminal is greater than or equal to the second threshold;

[0520] The ninth condition includes at least one of the following:

[0521] The remaining storage space of the cell is less than or equal to the eighteenth threshold;

[0522] The remaining storage space of the cell is less than or equal to the first data volume of the terminal;

[0523] The first data volume includes at least one of the following: the data volume available to the terminal; and the data volume to be sent by the terminal.

[0524] In one possible implementation, the first information is used to indicate the service type supported by the cell; the execution module 42 is specifically used to: when the service type initiated by the terminal matches the service type supported by the first cell, perform the sixth operation; or, when the service type initiated by the terminal does not match the service type supported by the first cell, perform at least one of the following: the second operation, the third operation, and the fourth operation.

[0525] In one possible implementation, the service type initiated by the terminal matches the service type supported by the first cell, including at least one of the following: the service type initiated by the terminal and the service type supported by the first cell have an intersection; the service type initiated by the terminal is a subset of the service type supported by the first cell.

[0526] In a possible implementation, the first information is used to indicate the forwarding priority of a service type supported by the cell; and the execution module 42 is specifically used for any of the following:

[0527] If the forwarding priority corresponding to the service type initiated by the terminal is higher than or equal to the nineteenth threshold, perform the sixth operation;

[0528] If the forwarding priority corresponding to the service type initiated by the terminal is the highest priority, perform the sixth operation;

[0529] When the forwarding priority corresponding to the service type initiated by the terminal is lower than or equal to the nineteenth threshold, perform at least one of the following: the second operation, the third operation, and the fourth operation;

[0530] When the forwarding priority corresponding to the service type being initiated, to be initiated, or already initiated by the terminal is the lowest priority, at least one of the following is performed: the second operation, the third operation, or the fourth operation.

[0531] In one possible implementation, the acquisition module 41 is specifically used to: receive a system message from a first cell, where the system message includes the first information; or receive a system message from a fourth cell, where the fourth cell is a serving cell of the terminal, the first cell is a neighboring cell of the terminal, and the system message includes the first information.

[0532] In one possible implementation, the above-mentioned execution module 42 is specifically used to perform a first operation in a first area based on the first information; wherein the first area includes at least one of the following: an area indicated by at least one tracking area identifier; an area indicated by at least one tracking area code; and at least one geographical area.

[0533] An embodiment of the present application provides a cell selection device. When a cell supporting a default satellite operation mode coexists with a cell supporting a store-and-forward satellite operation mode, the cell selection device can use relevant information of the first cell to perform operations related to cell selection or reselection, so that the cell selection device can select or reselect a suitable cell, thereby ensuring the communication reliability of the cell selection device.

[0534] The cell selection device in the embodiments of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or chip. The electronic device can be a terminal, or it can be other devices other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0535] The cell selection device provided in the embodiment of the present application can implement each process implemented in the above-mentioned cell selection method embodiment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0536] FIG6 shows a possible structural diagram of a cell selection device involved in an embodiment of the present application. As shown in FIG6 , the cell selection device 50 may include: a sending module 51 .

[0537] Among them, the sending module 51 is used to send first information of the first cell to the terminal, and the first information is used to perform a first operation, which is an operation related to cell selection or cell reselection; the first information is used to indicate at least one of the following: the satellite operation mode of the cell; the time when the satellite is connected to the ground gateway; the time when the cell stops service; the time when the cell stores data; the amount of data that the cell can store; the first threshold value, the first threshold value is related to the maximum first data amount of the cell that the terminal can select or reselect; the second threshold value, the second threshold value is related to the minimum first data amount of the cell that the terminal can select or reselect; the service type supported by the cell; the forwarding priority of the service type supported by the cell; wherein the first data amount includes at least one of the following: the amount of data available to the terminal; the amount of data to be sent by the terminal.

[0538] In a possible implementation, the first information is used to indicate a satellite operation mode, where the satellite operation mode includes at least one of the following: a default satellite operation mode, a store and forward satellite operation mode;

[0539] The default satellite operation mode includes at least one of the following:

[0540] The cell's service link and feedback link are both available;

[0541] Satellite connectivity to the terrestrial gateway is available;

[0542] The cell supports end-to-end connectivity;

[0543] Store and forward satellite mode of operation including at least one of the following:

[0544] The serving link of the cell is available, and the feedback link of the cell is unavailable;

[0545] The satellite's connection to the ground gateway is unavailable;

[0546] The cell only supports terminal-to-satellite connections;

[0547] The cell does not support end-to-end connectivity.

[0548] In one possible implementation, the first information is used to indicate the time when the satellite is connected to the ground gateway; the first information includes at least one of the following:

[0549] Feedback link availability time information;

[0550] Time information when both the service link and the feedback link are available;

[0551] Time information available for satellite connections to ground gateways;

[0552] Time information available for the end-to-end connection.

[0553] In one possible implementation, the first information is used to indicate the time when the cell stops serving; the first information includes at least one of the following: time information when the service link is unavailable; time information when the feedback link is unavailable; time information when the cell stops serving the current coverage area.

[0554] In one possible implementation, the first information is used to indicate the amount of data that can be stored in the cell; the first information includes at least one of the following: information on the total amount of data that can be stored in the cell; information on the remaining amount of data that can be stored in the cell; and information on the amount of data that has been used by the cell.

[0555] An embodiment of the present application provides a cell selection device. When a cell supporting a default satellite operation mode coexists with a cell supporting a store-and-forward satellite operation mode, the cell selection device can send relevant information of a first cell to a terminal, so that the terminal can perform operations related to cell selection or reselection based on the relevant information of the first cell, so that the terminal can select or reselect a suitable cell, thereby ensuring the communication reliability of the terminal.

[0556] The cell selection device provided in the embodiment of the present application can implement each process implemented in the above-mentioned cell selection method embodiment and achieve the same technical effect. To avoid repetition, it will not be described here.

[0557] As shown in Figure 7, an embodiment of the present application further provides a communication device 5000, including a processor 5001 and a memory 5002, wherein the memory 5002 stores a program or instruction that can be run on the processor 5001. For example, when the communication device 5000 is a terminal, the program or instruction, when executed by the processor 5001, implements the various steps of the above-mentioned terminal-side method embodiment, and can achieve the same technical effect. To avoid repetition, it is not repeated here. When the communication device 5000 is a network-side device, the program or instruction, when executed by the processor 5001, implements the various steps of the above-mentioned network-side device method embodiment, and can achieve the same technical effect. To avoid repetition, it is not repeated here.

[0558] The present application also provides a terminal including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps in the above-described cell selection method embodiment. This terminal embodiment corresponds to the above-described terminal-side method embodiment, and each implementation process and implementation method of the above-described method embodiment is applicable to this terminal embodiment and can achieve the same technical effects. Specifically, Figure 8 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

[0559] The terminal 7000 includes but is not limited to: a radio frequency unit 7001, a network module 7002, an audio output unit 7003, an input unit 7004, a sensor 7005, a display unit 7006, a user input unit 7007, an interface unit 7008, a memory 7009 and at least some of the components of the processor 7010.

[0560] Those skilled in the art will appreciate that the terminal 7000 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 7010 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG8 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements. Detailed descriptions are omitted here.

[0561] It should be understood that in an embodiment of the present application, the input unit 7004 may include a graphics processing unit (GPU) 70041 and a microphone 70042, and the graphics processor 70041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 7006 may include a display panel 70061, and the display panel 70061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 7007 includes a touch panel 70071 and at least one of other input devices 70072. The touch panel 70071 is also called a touch screen. The touch panel 70071 may include two parts: a touch detection device and a touch controller. Other input devices 70072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0562] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 7001 may transmit the data to the processor 7010 for processing. Furthermore, the RF unit 7001 may send uplink data to the network-side device. Typically, the RF unit 7001 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0563] The memory 7009 can be used to store software programs or instructions and various data. The memory 7009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 7009 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 7009 in the embodiment of the present application includes, but is not limited to, these and any other suitable types of memory.

[0564] The processor 7010 may include one or more processing units. Optionally, the processor 7010 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into the processor 7010.

[0565] The terminal provided in the embodiment of the present application can implement the various processes implemented in the above-mentioned method embodiment and achieve the same technical effect. The implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the above-mentioned cell selection method embodiment. To avoid repetition, it will not be repeated here.

[0566] The present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the cell selection method embodiment described above. This network-side device embodiment corresponds to the above-described network-side device method embodiment, and each implementation process and implementation method of the above-described method embodiment can be applied to this network-side device embodiment and can achieve the same technical effects.

[0567] Specifically, embodiments of the present application also provide a network-side device. As shown in Figure 9, the network-side device 600 includes an antenna 61, a radio frequency device 62, a baseband device 63, a processor 64, and a memory 65. Antenna 61 is connected to radio frequency device 62. In the uplink direction, radio frequency device 62 receives information via antenna 61 and sends the received information to baseband device 63 for processing. In the downlink direction, baseband device 63 processes the information to be transmitted and sends it to radio frequency device 62. Radio frequency device 62 processes the received information and then sends it through antenna 61.

[0568] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 63 , which includes a baseband processor.

[0569] The baseband device 63 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 9, one of the chips is, for example, a baseband processor, which is connected to the memory 65 through a bus interface to call the program in the memory 65 and execute the network side device operations shown in the above method embodiment.

[0570] The network side device may further include a network interface 66, which is, for example, a Common Public Radio Interface (CPRI).

[0571] Specifically, the network side device 600 of an embodiment of the present invention also includes: instructions or programs stored in the memory 65 and executable on the processor 64. The processor 64 calls the instructions or programs in the memory 65 to execute the methods executed by the modules shown in the above-mentioned cell selection device and achieve the same technical effect. To avoid repetition, they will not be elaborated here.

[0572] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned cell selection method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0573] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0574] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned cell selection method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0575] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0576] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned cell selection method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0577] An embodiment of the present application further provides a wireless communication system, including: a terminal and a network-side device, wherein the terminal can be used to execute the steps of the above-mentioned cell selection method, and the network-side device can be used to execute the steps of the above-mentioned cell selection method.

[0578] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0579] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0580] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A cell selection method, comprising: The terminal obtains first information of a first cell; Based on the first information, the terminal performs a first operation; wherein, the first operation is an operation related to cell selection or cell reselection; the first information is used to indicate at least one of the following: The satellite operation mode of the cell; The time when the satellite is connected to the terrestrial gateway; The time when the cell stops providing services; The time when the cell stores data; The amount of data that the cell can store; A first threshold, the first threshold being related to the maximum first data amount that the terminal can select or reselect cells; A second threshold, the second threshold being related to the minimum first data amount that the terminal can select or reselect cells; The service types supported by the cell; The forwarding priority of the service types supported by the cell; Wherein, the first data amount includes at least one of the following: The amount of data available to the terminal; The amount of data to be sent by the terminal.

2. The method according to claim 1, wherein The first information is used to indicate the satellite operation mode, and the satellite operation mode includes at least one of the following: default satellite operation mode, store-and-forward satellite operation mode; Wherein, the default satellite operation mode includes at least one of the following: Both the service link and the feedback link of the cell are available; The connection between the satellite and the terrestrial gateway is available; The cell supports end-to-end connection; The store-and-forward satellite operation mode includes at least one of the following: The service link of the cell is available, and the feedback link of the cell is unavailable; The connection between the satellite and the terrestrial gateway is unavailable; The cell only supports the connection from the terminal to the satellite; The cell does not support end-to-end connection.

3. The method according to claim 1, wherein The first information is used to indicate the time when the satellite is connected to the terrestrial gateway; The first information includes at least one of the following: The time information when the feedback link is available; The time information when both the service link and the feedback link are available; The time information when the connection between the satellite and the terrestrial gateway is available; The time information when the end-to-end connection is available.

4. The method according to claim 1, wherein, The first information is used to indicate the time when the cell stops providing services; The first information includes at least one of the following: The time information when the service link is unavailable; The time information when the feedback link is unavailable; The time information when the cell stops serving the current coverage area.

5. The method according to claim 1, wherein, The first information is used to indicate the amount of data that the cell can store; The first information includes at least one of the following: The total amount of data that the cell can store information; The remaining amount of data that the cell can store information; The amount of data that the cell has used for storage information.

6. The method according to any one of claims 1 to 5, wherein The first operation includes at least one of the following: a second operation, a third operation, a fourth operation, a fifth operation, a sixth operation; Wherein, the second operation includes at least one of the following: Not considering the first cell as a suitable cell; Considering the first cell as an acceptable cell; Considering the first cell as prohibited; Not considering the first cell as a candidate cell for the first operation; The third operation includes at least one of the following: Considering the service frequency as the frequency with the highest priority; Considering the frequencies other than the service frequency as the frequencies with the lowest priority; Increasing the priority of the service frequency by a first offset; Decreasing the priority of the frequencies other than the service frequency by a second offset; Increase a first value of the serving cell by a third offset, where the first value is a cell selection received level value; Increase a second value of the serving cell by a fourth offset, where the second value is a cell selection quality value; Decrease a third threshold by a fifth offset, where the third threshold is a threshold of the first value for intra-frequency measurement; Decrease a fourth threshold by a sixth offset, where the fourth threshold is a threshold of the second value for intra-frequency measurement; Decrease a fifth threshold by a seventh offset, where the fifth threshold is a threshold of the first value for inter-frequency or inter-system frequency measurement; Decrease a sixth threshold by an eighth offset, where the sixth threshold is a threshold of the second value for inter-frequency or inter-system frequency measurement; The fourth operation includes at least one of the following: Exclude the first cell during execution of the first operation; When the first cell is not the serving cell of the terminal and the frequency where the first cell is located is the same as the serving frequency, decrease the R value of the first cell by a ninth offset; Decrease a first value of the first cell by a tenth offset, where the first value is a cell selection received level value; Decrease a second value of the first cell by an eleventh offset, where the second value is a cell selection quality value; Increase a first value of the serving cell by a twelfth offset, where the first value is a cell selection received level value; Increase a second value of the serving cell by a thirteenth offset, where the second value is a cell selection quality value; Increase a seventh threshold by a fourteenth offset, where the seventh threshold is a threshold of the first value for a higher priority frequency or a higher priority inter-system frequency; Increase an eighth threshold by a fifteenth offset, where the eighth threshold is a threshold of the second value for a higher priority frequency or a higher priority inter-system frequency; Increase a ninth threshold by a sixteenth offset, where the ninth threshold is a threshold of the first value for a lower priority frequency or a lower priority inter-system frequency; Increase a tenth threshold by a seventeenth offset, where the tenth threshold is a threshold of the second value for a lower priority frequency or a lower priority inter-system frequency; Decrease an eleventh threshold by an eighteenth offset, where the eleventh threshold is a threshold of the first value of the serving cell for a lower priority frequency or a lower priority inter-system frequency; Increase a twelfth threshold by a nineteenth offset, where the twelfth threshold is a threshold of the second value of the serving cell for a lower priority frequency or a lower priority inter-system frequency; The fifth operation includes not performing an access stratum (AS) operation, where the AS operation is an operation related to any one of the following: cell search, cell measurement, cell selection, cell reselection; The sixth operation includes at least one of the following: Give priority to performing measurement of the frequency where the first cell is located; Give priority to selecting or reselecting the first cell; Consider the first cell as a suitable cell.

7. The method according to claim 6, wherein Excluding the first cell during execution of the first operation includes at least one of the following: Not measuring the frequency where the first cell is located; Not performing reselection evaluation on the first cell; Not considering the first cell as a candidate cell for cell selection or cell reselection.

8. The method according to claim 6, wherein, Perform the measurement of the frequency of the first cell preferentially, including at least one of the following: Consider the frequency of the first cell as the frequency with the highest priority; Consider the frequencies other than the frequency of the first cell as the frequencies with the lowest priority; Increase the priority of the frequency of the first cell by twenty offset values; Decrease the priority of the frequencies other than the frequency of the first cell by twenty-one offset values; Increase the third threshold by twenty-two offset values, where the third threshold is the threshold for the first value used for co-frequency measurement; Increase the fourth threshold by twenty-three offset values, where the fourth threshold is the threshold for the second value used for co-frequency measurement; Increase the fifth threshold by twenty-four offset values, where the fifth threshold is the threshold for the first value used for inter-frequency or inter-system frequency measurement; Increase the sixth threshold by twenty-five offset values, where the sixth threshold is the threshold for the second value used for inter-frequency or inter-system frequency measurement.

9. The method according to claim 6, wherein Preferentially select or reselect the first cell, including at least one of the following: When the frequency of the first cell is different from the serving frequency, evaluate the first cell preferentially; When the frequency of the first cell is the same as the serving frequency or the priority of the frequency of the first cell is equal to the priority of the serving frequency, increase the R value of the first cell by twenty-six offset values; When the frequency of the first cell is the same as the serving frequency or the priority of the frequency of the first cell is equal to the priority of the serving frequency, decrease the R value of the other cells except the first cell by twenty-seven offset values, where the frequencies of the other cells are the same as the serving frequency; When the frequency of the first cell is the same as the serving frequency or the priority of the frequency of the first cell is equal to the priority of the serving frequency, if the R value of the first cell exceeds the thirteenth threshold, select or reselect the first cell; Increase the first value of the first cell by twenty-eight offset values, where the first value is the cell selection received signal level value; Increase the second value of the first cell by twenty-nine offset values, where the second value is the cell selection quality value; When the priority of the frequency of the first cell is higher than the priority of the serving frequency, decrease the seventh threshold by thirty offset values, where the seventh threshold is the threshold for the first value used for a higher priority frequency or a higher priority inter-system frequency; When the priority of the frequency of the first cell is higher than the priority of the serving frequency, decrease the eighth threshold by thirty-one offset values, where the eighth threshold is the threshold for the second value used for a higher priority frequency or a higher priority inter-system frequency; When the priority of the frequency of the first cell is lower than the priority of the serving frequency, decrease the ninth threshold by thirty-two offset values, where the ninth threshold is the threshold for the first value used for a lower priority frequency or a lower priority inter-system frequency; When the priority of the frequency where the first cell is located is lower than the priority of the serving frequency, reduce the tenth threshold by the thirty-third offset, where the tenth threshold is the threshold for the second value of a lower priority frequency or a lower priority inter-system frequency; When the priority of the frequency where the first cell is located is lower than the priority of the serving frequency, increase the eleventh threshold by the thirty-fourth offset, where the eleventh threshold is the threshold for the first value of the serving cell of a lower priority frequency or a lower priority inter-system frequency; When the priority of the frequency where the first cell is located is lower than the priority of the serving frequency, increase the twelfth threshold by the thirty-fifth offset, where the twelfth threshold is the threshold for the second value of the serving cell of a lower priority frequency or a lower priority inter-system frequency.

10. The method according to any one of claims 6 to 9, wherein When the terminal is not camped on any cell, the first operation is the second operation; Or, When the serving cell of the terminal is the second cell, the first operation includes at least one of the following: the second operation, the third operation, the fourth operation, the fifth operation, the sixth operation; The second cell supports the default satellite operation mode; Or, When the serving cell of the terminal is the third cell, the first operation includes at least one of the following: the second operation, the third operation, the fourth operation, the fifth operation, the sixth operation; where the third cell supports the store-and-forward satellite operation mode.

11. The method according to claim 10, wherein, When the terminal is not camped on any cell, the first operation being the second operation includes at least one of the following: When the first cell only supports the store-and-forward satellite operation mode and the terminal is not camped on any cell, the first operation is the second operation; When the first cell only supports the store-and-forward satellite operation mode, meets the first condition and the terminal is not camped on any cell, the first operation is the second operation; When the first cell only supports the default satellite operation mode and the terminal is not camped on any cell, the first operation is the second operation; When the first cell only supports the default satellite operation mode, meets the second condition and the terminal is not camped on any cell, the first operation is the second operation.

12. The method according to claim 10, wherein, When the serving cell of the terminal is the second cell, the first operation includes at least one of the following: the second operation, the third operation, the fourth operation, the fifth operation, the sixth operation; Includes at least one of the following: When the first cell only supports the store-and-forward satellite operation mode and the serving cell of the terminal is the second cell, the first operation includes at least one of the following: the second operation, the third operation, the fourth operation, the fifth operation; When the first cell only supports the store-and-forward satellite operation mode, the serving cell of the terminal is the second cell and meets the first condition, the first operation includes at least one of the following: the second operation, the third operation, the fourth operation, the fifth operation; When the first cell supports the default satellite operation mode and the serving cell of the terminal is the second cell, the first operation includes the sixth operation; When the first cell supports the default satellite operation mode, the serving cell of the terminal is the second cell, and the first condition is satisfied, the first operation includes the sixth operation.

13. The method according to claim 10, wherein When the serving cell of the terminal is the third cell, the first operation includes at least one of the following: the second operation, the third operation, the fourth operation, the fifth operation, the sixth operation; including at least one of the following: When the first cell only supports the default satellite mode and the serving cell of the terminal is the third cell, the first operation includes the second operation, the third operation, the fourth operation, the fifth operation; When the first cell only supports the default satellite mode, the serving cell of the terminal is the third cell, and the second condition is satisfied, the first operation includes the second operation, the third operation, the fourth operation, the fifth operation; When the first cell is other than the third cell and the serving cell of the terminal is the third cell, the first operation includes the second operation, the third operation, the fourth operation, the fifth operation; When the first cell is other than the third cell, the serving cell of the terminal is the third cell, and the second condition is satisfied, the first operation includes the second operation, the third operation, the fourth operation, the fifth operation; When the first cell supports the store-and-forward satellite operation mode and the serving cell of the terminal is the third cell, the first operation includes the sixth operation; When the first cell supports the store-and-forward satellite operation mode, the serving cell of the terminal is the third cell, and the second condition is satisfied, the first operation includes the sixth operation.

14. The method according to any one of claims 11 to 13, wherein The first condition includes at least one of the following: The terminal does not support the operations related to the store-and-forward satellite operation mode; The terminal does not initiate services related to store-and-forward; The terminal is in the first operation mode, and the first operation mode is that communication can only be performed in a cell that supports the default satellite operation mode; The terminal is not in the second operation mode, and the second operation mode is that communication can only be performed in a cell that supports the store-and-forward satellite operation mode; The second condition includes at least one of the following: The terminal has initiated services related to store-and-forward; The terminal is initiating services related to store-and-forward; There are services related to store-and-forward to be initiated; The terminal is in the second operation mode, and the second operation mode is that communication can only be performed in a cell that supports the store-and-forward satellite operation mode; The terminal is not in the first operation mode, and the first operation mode is that communication can only be performed in a cell that supports the default satellite operation mode; The cell where the terminal previously camped or is currently camping supports the store-and-forward satellite operation mode; The terminal has initiated an uplink transmission on a cell that supported the store-and-forward satellite operation mode during previous or current residence. The terminal has successfully established a connection with a cell that supports the store-and-forward satellite operation mode. The terminal is waiting for a downlink transmission from a cell that supported the store-and-forward satellite operation mode during previous or current residence.

15. The method according to any one of claims 6 to 14, wherein The first information is used to indicate the time when the satellite is connected to the terrestrial gateway. Based on the first information, the terminal performs a first operation, including: When the first information meets the fourth condition, the terminal performs the sixth operation. Among them, the fourth condition includes at least one of the following: The interval between the current time and the time indicated by the first information is less than or equal to the fourteenth threshold. The interval between the current time and the time indicated by the first information is the smallest time interval among the neighboring cells of the terminal.

16. The method according to any one of claims 6 to 14, wherein The first information is used to indicate the time when the satellite is connected to the terrestrial gateway. Based on the first information, the terminal performs a first operation, including: When the interval between the current time and the time indicated by the first information is greater than or equal to the fifteenth threshold, the terminal performs at least one of the following: the second operation, the third operation, the fourth operation. Or, When the interval between the current time and the time indicated by the first information is greater than or equal to the fifteenth threshold and meets the second condition, the terminal performs at least one of the following: the second operation, the third operation, the fourth operation. Among them, the second condition includes at least one of the following: The terminal has initiated, is initiating, or is to initiate a service related to store-and-forward. The terminal is in a second operation mode, and the second operation mode is for communication only in a cell that supports the store-and-forward satellite operation mode. The terminal is not in a first operation mode, and the first operation mode is for communication only in a cell that supports the default satellite operation mode.

17. The method according to any one of claims 6 to 14, wherein The first information is used to indicate the time when the cell stops service. Based on the first information, the terminal performs a first operation, including: When the first information meets the fifth condition, the terminal performs the sixth operation. Or, When the interval between the current time and the time indicated by the first information is less than or equal to the sixteenth threshold, the terminal performs at least one of the following: the second operation, the third operation, the fourth operation. Among them, the fifth condition includes at least one of the following: The interval between the current system time and the time indicated by the first information is greater than or equal to the sixteenth threshold. The interval between the current system time and the time indicated by the first information is the largest time interval among the neighboring cells of the terminal.

18. The method according to any one of claims 6 to 14, wherein, The first information is used to indicate the time when the cell stores data. Based on the first information, the terminal performs a first operation, including: When the first information meets the sixth condition, the terminal performs the sixth operation. Or, When the first information meets the seventh condition, the terminal performs at least one of the following: the second operation, the third operation, the fourth operation. Among them, the sixth condition includes at least one of the following: The start time for the cell to store data has arrived; The end time for the cell to store data has not arrived; The seventh condition includes at least one of the following: The start time for the cell to store data has not arrived; The interval between the current time and the end time for the cell to store signaling data is less than or equal to the seventeenth threshold.

19. The method according to claim 18, wherein, That the end time for the cell to store signaling or data has not arrived includes: The interval between the current time and the end time for the cell to store data is greater than or equal to the seventeenth threshold; The interval between the current system time and the end time for the cell to store signaling or data is the largest time interval among the neighboring cells of the terminal.

20. The method according to any one of claims 6 to 14, wherein The first information is used to indicate the amount of data that the cell can store; Based on the first information, the terminal performs a first operation, including: When the first information meets the eighth condition, the terminal performs the sixth operation; Or, When the first information meets the ninth condition, the terminal performs at least one of the following: the second operation, the third operation, the fourth operation; Among them, the eighth condition includes at least one of the following: The remaining storage space of the cell is greater than or equal to the eighteenth threshold; The remaining storage space of the cell is greater than or equal to the first data volume of the terminal; The first data volume of the terminal is less than or equal to the first threshold; The second data volume of the terminal is greater than or equal to the second threshold; The ninth condition includes at least one of the following: The remaining storage space of the cell is less than or equal to the eighteenth threshold; The remaining storage space of the cell is less than or equal to the first data volume of the terminal; Among them, the first data volume includes at least one of the following: The available data volume of the terminal; The data volume to be sent by the terminal.

21. The method according to any one of claims 6 to 14, wherein The first information is used to indicate the service types supported by the cell; Based on the first information, the terminal performs a first operation, including: When the service type initiated by the terminal matches the service types supported by the first cell, the terminal performs the sixth operation; Or, When the service type initiated by the terminal does not match the service types supported by the first cell, the terminal performs at least one of the following: the second operation, the third operation, the fourth operation.

22. The method according to claim 21, wherein That the service type initiated by the terminal matches the service types supported by the first cell includes at least one of the following: There is an intersection between the service type initiated by the terminal and the service types supported by the first cell; The service type initiated by the terminal is a subset of the service types supported by the first cell.

23. The method according to any one of claims 6 to 14, wherein The first information is used to indicate the forwarding priority of the service types supported by the cell; Based on the first information, the terminal performs a first operation, including any one of the following: When the forwarding priority corresponding to the service type initiated by the terminal is higher than or equal to the nineteenth threshold, the terminal performs the sixth operation; When the forwarding priority corresponding to the service type initiated by the terminal is the highest priority, the terminal performs the sixth operation; When the forwarding priority corresponding to the service type initiated by the terminal is lower than or equal to the nineteenth threshold, the terminal performs at least one of the following: the second operation, the third operation, the fourth operation; When the forwarding priority corresponding to the service type being initiated, to be initiated, or already initiated by the terminal is the lowest priority, the terminal performs at least one of the following: the second operation, the third operation, and the fourth operation.

24. The method according to any one of claims 1 to 23, wherein, The terminal obtains first information of a first cell, including: The terminal receives a system message from the first cell, and the first information is included in the system message; Or, The terminal receives a system message from a fourth cell, where the fourth cell is the serving cell of the terminal and the first cell is a neighbor cell of the terminal, and the first information is included in the system message.

25. The method according to any one of claims 1 to 24, wherein Based on the first information, the terminal performs a first operation, including: Based on the first information, the terminal performs the first operation in a first area; where the first area includes at least one of the following: An area indicated by at least one tracking area identifier; An area indicated by at least one tracking area code; At least one geographical area.

26. A cell selection method, including: A network side device sends first information of a first cell to a terminal, where the first information is used to perform a first operation, and the first operation is an operation related to cell selection or cell reselection; The first information is used to indicate at least one of the following: The satellite operation mode of the cell; The time when the satellite is connected to the ground gateway; The time when the cell stops providing services; The time when the cell stores data; The amount of data that the cell can store; A first threshold, where the first threshold is related to the maximum first data amount that the terminal can select or reselect a cell for; A second threshold, where the second threshold is related to the minimum first data amount that the terminal can select or reselect a cell for; The service types supported by the cell; The forwarding priority of the service types supported by the cell; Wherein, the first data amount includes at least one of the following: The amount of data available to the terminal; The amount of data to be sent by the terminal.

27. The method according to claim 26, wherein The first information is used to indicate the satellite operation mode, and the satellite operation mode includes at least one of the following: the default satellite operation mode, the store-and-forward satellite operation mode; Wherein, the default satellite operation mode includes at least one of the following: Both the service link and the feedback link of the cell are available; The connection between the satellite and the ground gateway is available; The cell supports end-to-end connection; The store-and-forward satellite operation mode includes at least one of the following: The service link of the cell is available, and the feedback link of the cell is unavailable; The connection between the satellite and the ground gateway is unavailable; The cell only supports the connection from the terminal to the satellite; The cell does not support end-to-end connection.

28. The method according to claim 26, wherein The first information is used to indicate the time when the satellite is connected to the ground gateway; The first information includes at least one of the following: The time information when the feedback link is available; The time information when both the service link and the feedback link are available; The time information when the connection between the satellite and the ground gateway is available; The time information when the end-to-end connection is available.

29. The method according to claim 26, wherein The first information is used to indicate the time when the cell stops providing services; The first information includes at least one of the following: The time information when the service link is unavailable; The time information when the feedback link is unavailable; The time information when the cell stops serving the current coverage area.

30. The method according to claim 26, wherein, The first information is used to indicate the data amount that can be stored in the cell; The first information includes at least one of the following: The total data amount information that can be stored in the cell; The remaining data amount information that can be stored in the cell; The data amount information that has been used for storage in the cell.

31. A cell selection device, comprising: An acquisition module and an execution module; The acquisition module is used to acquire the first information of the first cell; The execution module is used to perform a first operation based on the first information acquired by the acquisition module; wherein, the first operation is an operation related to cell selection or cell reselection; the first information is used to indicate at least one of the following: The satellite operation mode of the cell; The time when the satellite is connected to the ground gateway; The time when the cell stops providing services; The time when the cell stores data; The data amount that can be stored in the cell; A first threshold, where the first threshold is related to the maximum first data amount of the cells that the terminal can select or reselect; A second threshold, where the second threshold is related to the minimum first data amount of the cells that the terminal can select or reselect; The service types supported by the cell; The forwarding priority of the service types supported by the cell; Wherein, the first data amount includes at least one of the following: The data amount available to the terminal; The data amount to be sent by the terminal.

32. A cell selection device, comprising: A sending module; The sending module is used to send the first information of the first cell to the terminal, the first information is used to perform a first operation, the first operation is an operation related to cell selection or cell reselection; the first information is used to indicate at least one of the following: The satellite operation mode of the cell; The time when the satellite is connected to the ground gateway; The time when the cell stops providing services; The time when the cell stores data; The data amount that can be stored in the cell; A first threshold, where the first threshold is related to the maximum first data amount of the cells that the terminal can select or reselect; A second threshold, where the second threshold is related to the minimum first data amount of the cells that the terminal can select or reselect; The service types supported by the cell; The forwarding priority of the service types supported by the cell; Wherein, the first data amount includes at least one of the following: The data amount available to the terminal; The data amount to be sent by the terminal.

33. A terminal, including a processor and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the cell selection method described in any one of claims 1 to 25 are implemented.

34. A network-side device, including a processor and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the cell selection method described in any one of claims 26 to 30 are implemented.

35. A readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the cell selection method described in any one of claims 1 to 25 are implemented, or the steps of the cell selection method described in any one of claims 26 to 30 are implemented.

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