Processing method, communication device and storage medium

Abstract

Disclosed in the present application are a processing method, a communication device and a storage medium. The method comprises: a first network node determining or generating first information on the basis of a first network node information list. By means of the technical solution of the present application, a key processing mechanism for a satellite (base station) store-and-forward mode can be improved, thereby ensuring that a UP mode can be normally used.

Description

Processing method, communication device and storage medium

[0001] This application claims priority to international patent application number PCT / CN2024 / 110143, filing date 2024-08-06, patent name “Processing method, communication device and storage medium”, and international patent application number PCT / CN2024 / 073709, filing date 2024-01-23, patent name “Processing method, communication device and storage medium”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the field of communication technology, and in particular to a processing method, communication equipment and storage medium. Background Art

[0003] In the existing protocol, in UP mode (user-plane cellular IoT evolved packet system optimization mode), when a terminal device initiates an RRC (Radio Resource Control) connection recovery request from a new network device (i.e., a network device that is preparing to restore the RRC connection, such as a new eNB), the security key (KeNB*) used by the new network device needs to be determined or generated by the old network device (i.e., the network device that suspends the RRC connection, such as the old eNB) based on the PCI (Physical Cell Identifier) ​​and frequency (such as EARFCN-DL) of the cell corresponding to the new network device, and sent to the new network device.

[0004] During the process of conceiving and implementing this application, the inventors discovered at least the following problems:

[0005] In NTN (Non-Terrestrial Network), due to the high-speed movement of satellites, terminal devices are likely to initiate RRC connection recovery requests from new network devices. In S&F (Store and Forward) mode, since the new network device and the old network device may not be directly connected, the new network device cannot obtain the security key from the old network device, resulting in the UP mode being unusable. Therefore, it is urgent to further improve the key processing mechanism of the satellite (base station) store and forward mode.

[0006] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Technical Solutions

[0007] The main purpose of this application is to propose a new technical solution for the satellite (base station) storage and forwarding mode to improve the key processing mechanism of the satellite (base station) storage and forwarding mode.

[0008] The present application provides a processing method, which can be applied to a first network node (such as a base station), comprising the steps of:

[0009] S2: Determine or generate first information based on the first network node information list.

[0010] Optionally, the method further comprises at least one of the following:

[0011] sending a first message to a second network node;

[0012] A second message is received from a second network node.

[0013] Optionally, the method further comprises at least one of the following:

[0014] The first network node information list is determined or generated by the first network node;

[0015] The first message carries at least one of the following: a store-and-forward instruction, a network node information list request, and a second network node information list;

[0016] The second message carries at least one of the following: a first network node information list, a next hop, and a next hop link counter;

[0017] The first information includes an access layer security information list.

[0018] Optionally, step S2 includes:

[0019] Access layer security information is determined or generated according to at least one of a physical cell identifier, a frequency, a current security key, and a next hop of the cell.

[0020] Optionally, the method further comprises at least one of the following:

[0021] The physical cell identifier and / or frequency is determined according to the first network node information list;

[0022] Sending the first information to the corresponding network node;

[0023] Send an RRC connection release message to the terminal device.

[0024] Optionally, the method further comprises at least one of the following:

[0025] Send access layer security information to corresponding network nodes;

[0026] The RRC connection release information carries at least one of the following: an RRC release reason, a recovery identifier, a recovery identifier list, a next hop link counter, and a third network node information list;

[0027] Optionally, the method further comprises at least one of the following:

[0028] Access layer security information includes security keys and / or next hop link counters;

[0029] The store-and-forward indication is used to indicate that the current network node is operating in the store-and-forward mode;

[0030] The first network node information includes at least one of the following: a satellite identifier, a base station identifier, and a cell identifier;

[0031] The first network node information list is determined or generated based on the second network node information list;

[0032] The third network node information list is determined or generated according to the first network node information list;

[0033] The third network node information list is the same as the first network node information list;

[0034] The third network node information includes at least one of a satellite identifier, a base station identifier, a cell identifier, a physical cell identifier, a frequency, and satellite assistance information;

[0035] The corresponding network nodes include network nodes in the first network node information list and / or the third network node information list.

[0036] The present application also provides a processing method, which can be applied to a second network node (such as a core network device), comprising the steps of:

[0037] S1: Send a second message to enable a first network node to determine or generate first information based on a first network node information list.

[0038] Optionally, the method further comprises at least one of the following:

[0039] Sending a third message to the terminal device;

[0040] receiving a first message from a first network node;

[0041] First information is received from a first network node.

[0042] Optionally, the method further comprises at least one of the following:

[0043] The first message carries at least one of the following: a store-and-forward instruction, a network node information list request, and a second network node information list;

[0044] The second message carries at least one of the following: a first network node information list, a next hop, and a next hop link counter;

[0045] The third message includes a fourth network node information list;

[0046] The first information includes an access layer security information list.

[0047] Optionally, the first network node determines or generates the first information based on the first network node information list, including:

[0048] The first network node determines or generates access layer security information according to at least one of a physical cell identifier, a frequency, a current security key, and a next hop of the cell.

[0049] Optionally, the method further comprises at least one of the following:

[0050] Access layer security information includes security keys and / or next hop link counters;

[0051] The store-and-forward indication is used to indicate that the current network node is operating in the store-and-forward mode;

[0052] The first network node information includes at least one of the following: a satellite identifier, a base station identifier, and a cell identifier;

[0053] The first network node information list is determined or generated based on the second network node information list.

[0054] This application also provides a processing method that can be applied to a terminal device (such as a mobile phone), comprising the steps of:

[0055] S3: Receive an RRC connection release message sent by the first network node after determining or generating the first information.

[0056] Optionally, the method further comprises at least one of the following:

[0057] The first information is determined or generated based on the first network node information list;

[0058] The first network node sends a first message to the second network node;

[0059] The second network node responds to the first network node with a second message;

[0060] The first network node sends the first information to the corresponding network node;

[0061] A third message sent by the second network node is received.

[0062] Optionally, the method further comprises at least one of the following:

[0063] The first network node information list is determined or generated by the first network node;

[0064] The first message carries at least one of the following: a store-and-forward instruction, a network node information list request, and a second network node information list;

[0065] The second message carries at least one of the following: a first network node information list, a next hop, and a next hop link counter;

[0066] The third message includes a fourth network node information list;

[0067] The first information includes an access layer security information list;

[0068] The RRC connection release information carries at least one of the following: an RRC release reason, a recovery identifier, a recovery identifier list, a next hop link counter, and a third network node information list;

[0069] The corresponding network nodes include network nodes in the first network node information list and / or the third network node information list.

[0070] Optionally, the method further comprises at least one of the following:

[0071] Access layer security information includes security keys and / or next hop link counters;

[0072] The store-and-forward indication is used to indicate that the current network node is operating in the store-and-forward mode;

[0073] The first network node information includes at least one of the following: a satellite identifier, a base station identifier, and a cell identifier;

[0074] The first network node information list is determined or generated based on the second network node information list;

[0075] The third network node information list is determined or generated according to the first network node information list;

[0076] The third network node information list is the same as the first network node information list;

[0077] The third network node information includes at least one of a satellite identifier, a base station identifier, a cell identifier, a physical cell identifier, a frequency, and satellite assistance information;

[0078] The first network node determines or generates first information based on the first network node information list, including at least one of the following:

[0079] The first network node determines a physical cell identifier and / or frequency of the corresponding cell according to the first network node information list;

[0080] The first network node determines or generates access layer security information according to at least one of a physical cell identifier, a frequency, a current security key, and a next hop of the cell.

[0081] Optionally, the method further comprises at least one of the following:

[0082] Save the terminal device context;

[0083] Monitor paging at the corresponding network node;

[0084] When paging or uplink data transmission is detected, an RRC connection recovery request is initiated;

[0085] Receive the RRC connection recovery message.

[0086] The present application also provides a processing device, comprising:

[0087] The determining module is configured to determine or generate first information based on the first network node information list.

[0088] The present application also provides a processing device, comprising:

[0089] The sending module is configured to send a second message, so that the first network node determines or generates the first information based on the first network node information list.

[0090] The present application also provides a processing device, comprising:

[0091] The receiving module is configured to receive an RRC connection release message sent by the first network node after determining or generating the first information.

[0092] The present application also provides a communication device, comprising: a memory, a processor, and a processing program stored in the memory and executable on the processor, wherein the processing program implements the steps of any of the above-described processing methods when executed by the processor.

[0093] The communication device in this application can be a terminal device (such as a mobile phone) or a network device (such as a base station). The specific reference needs to be clarified in the context.

[0094] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of any of the processing methods described above are implemented.

[0095] The technical solution of the present application, in which the network device determines or generates the first information based on the first network node information list, can improve the key processing mechanism of the satellite (base station) storage and forwarding mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0096] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0097] FIG1 is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application;

[0098] FIG2 is a diagram of a communication network system architecture provided by an embodiment of the present application;

[0099] FIG3 is a schematic diagram of the hardware structure of a controller 140 provided in this application;

[0100] FIG4 is a schematic diagram of the hardware structure of a network device 150 provided in this application;

[0101] FIG5 is a schematic diagram of a signaling flow of a processing method according to an embodiment of the present application;

[0102] FIG6 is a flow chart of a processing method according to the first embodiment of the present application;

[0103] FIG7 is a schematic flow chart of a processing method according to a fourth embodiment of the present application;

[0104] FIG8 is a schematic flow chart of a processing method according to a fifth embodiment of the present application;

[0105] FIG9 is a schematic diagram of the interaction flow between a network device and a terminal device according to a processing method according to a seventh embodiment of the present application;

[0106] FIG10 is a first structural diagram of a processing device provided in an embodiment of the present application;

[0107] FIG11 is a second structural diagram of a processing device provided in an embodiment of the present application;

[0108] FIG12 is a third structural diagram of a processing device provided in an embodiment of the present application;

[0109] FIG13 is a schematic diagram of the structure of the communication device provided in an embodiment of the present application.

[0110] The purpose of this application, its features, and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and the accompanying text are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of this application to those skilled in the art by reference to specific embodiments.

[0111] Implementation Methods of the Application

[0112] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0113] It should be noted that, in this document, the terms "comprises", "includes" or any other variations 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, and / or, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanation in the specific embodiment or further combined with the context of the specific embodiment.

[0114] It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are used solely to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the term "if," as used herein, may be interpreted as "upon," "when," or "in response to a determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprising" and "including" indicate the presence of the recited features, steps, operations, elements, components, items, types, and / or groups, but do not preclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, types, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used herein, may be interpreted as inclusive, meaning any one or any combination. For example, “comprising at least one of the following: A, B, C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”; and for another example, “A, B or C” or “A, B and / or C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”. An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some manner.

[0115] It should be understood that, although the various steps in the flowchart in the embodiment of the present application are shown in sequence according to the indication of the arrows, these steps are not necessarily performed in sequence in the order indicated by the arrows. Unless clearly stated herein, the execution of these steps is not strictly limited in order, and they can be performed in other orders. Moreover, at least a portion of the steps in the figure may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and their execution order is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0116] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to the determination" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)," depending on the context.

[0117] It should be noted that in this article, step codes such as S1 and S2 are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantial restriction on the order. When implementing the step, those skilled in the art may execute S2 first and then S1, etc., but these should all be within the scope of protection of this application.

[0118] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0119] In the subsequent description, the use of suffixes such as "module", "component" or "unit" to represent elements is only for the purpose of facilitating the description of the present application and has no specific meaning. Therefore, "module", "component" or "unit" can be used interchangeably.

[0120] The communication device in this application can be a terminal device (such as a mobile phone) or a network device (such as a base station). The specific reference needs to be clarified based on the context.

[0121] The terminal device may be implemented in various forms. For example, the terminal device described in this application may include intelligent terminal devices such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, and other fixed terminal devices such as digital TVs and desktop computers.

[0122] The subsequent description will be made using a mobile terminal as an example. Those skilled in the art will understand that, in addition to components specifically used for mobile purposes, the configuration according to the embodiments of the present application can also be applied to fixed-type terminal devices.

[0123] Please refer to Figure 1, which is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application. The mobile terminal 100 may include components such as an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (Audio / Video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111. Those skilled in the art will understand that the mobile terminal structure shown in Figure 1 does not limit the mobile terminal. The mobile terminal may include more or fewer components than shown, or may combine certain components, or arrange the components differently.

[0124] The following is a detailed introduction to the various components of the mobile terminal in conjunction with Figure 1:

[0125] The RF unit 101 can be used to send and receive information or receive signals during calls. Specifically, it receives downlink information from the base station and transmits it to the processor 110 for processing. It also transmits uplink data to the base station. Typically, the RF unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and / or other components. Furthermore, the RF unit 101 can communicate with the network and other devices via wireless communication. The above-mentioned wireless communications can use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), 5G and 6G, etc.

[0126] WiFi is a short-range wireless transmission technology. A mobile terminal, through WiFi module 102, enables users to send and receive emails, browse web pages, and access streaming media, providing wireless broadband Internet access. Although FIG1 illustrates WiFi module 102, it is understood that it is not a required component of the mobile terminal and can be omitted as needed without altering the essence of the invention.

[0127] The audio output unit 103 can convert audio data received by the RF unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output it as sound when the mobile terminal 100 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Furthermore, the audio output unit 103 can also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, or the like.

[0128] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos captured by an image capture device (e.g., a camera) in video capture mode or image capture mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the GPU 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the RF unit 101 or the WiFi module 102. The microphone 1042 may receive sound (audio data) in operating modes such as phone call mode, recording mode, and voice recognition mode, and may process such sound into audio data. In phone call mode, the processed audio (voice) data may be converted into a format that can be transmitted to a mobile communication base station via the RF unit 101. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) noise or interference generated during the reception and transmission of audio signals.

[0129] The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 1061 and / or the backlight when the mobile terminal 100 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that can be configured in the mobile phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be described here.

[0130] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0131] The user input unit 107 can be used to receive input digital or character information and generate key signal input related to user settings and function control of the mobile terminal. Optionally, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also known as a touch screen, can collect user touch operations on or near it (such as operations performed by the user using a finger, stylus, or any other suitable object or accessory on or near the touch panel 1071) and drive corresponding connected devices according to a pre-set program. The touch panel 1071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch direction and detects the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device and converts it into touch point coordinates, which are then sent to the processor 110. It can also receive and execute commands sent by the processor 110. And / or, the touch panel 1071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may further include other input devices 1072. Optionally, the other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, power keys, etc.), a trackball, a mouse, a joystick, etc., and the specifics are not limited here.

[0132] Optionally, the touch panel 1071 may overlay the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. The processor 110 then provides a corresponding visual output on the display panel 1061 based on the type of touch event. Although in FIG1 , the touch panel 1071 and the display panel 1061 are shown as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, which is not limited to this specific embodiment.

[0133] The interface unit 108 serves as an interface through which at least one external device can be connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, etc. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and an external device.

[0134] Memory 109 can be used to store software programs and various data. Memory 109 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store an operating system and at least one application required for a function (such as a sound playback function or an image playback function); the data storage area may store data generated based on the use of the mobile phone (such as audio data, a phone book, etc.). Furthermore, / or, memory 109 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0135] Processor 110 is the control center of the mobile terminal, connecting all components of the mobile terminal using various interfaces and circuits. By running or executing software programs and / or modules stored in memory 109 and accessing data stored in memory 109, it executes various functions of the mobile terminal and processes data, thereby providing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, processor 110 may integrate an application processor and a modem processor. Optionally, the application processor primarily handles the operating system, user interface, and application programs, while the modem processor primarily handles wireless communications. It is understood that the modem processor may not be integrated into processor 110.

[0136] The mobile terminal 100 may also include a power supply 111 (such as a battery) for supplying power to various components. Preferably, the power supply 111 may be logically connected to the processor 110 through a power management system, thereby managing functions such as charging, discharging, and power consumption through the power management system.

[0137] Although not shown in FIG. 1 , the mobile terminal 100 may further include a Bluetooth module, etc., which will not be described in detail here.

[0138] To facilitate understanding of the embodiments of the present application, the communication network system on which the mobile terminal of the present application is based is described below.

[0139] Please refer to Figure 2, which is a communication network system architecture diagram provided in an embodiment of the present application. The communication network system is an NR (New Radio) system of universal mobile communication technology. The NR system includes UE (User Equipment) 201, E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, EPC (Evolved Packet Core) 203 and the operator's IP service 204, which are connected in sequence.

[0140] Optionally, UE201 may be the above-mentioned terminal device 100, which will not be described in detail here.

[0141] E-UTRAN 202 includes eNodeB 2021 and other eNodeBs 2022 . Optionally, eNodeB 2021 may be connected to other eNodeBs 2022 via a backhaul (eg, an X2 interface). eNodeB 2021 is connected to EPC 203 , and eNodeB 2021 may provide access from UE 201 to EPC 203 .

[0142] EPC 203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving Gate Way) 2034, a PGW (PDN Gate Way) 2035, and a PCRF (Policy and Charging Rules Function) 2036. Optionally, MME 2031 is a control node that processes signaling between UE 201 and EPC 203, providing bearer and connection management. HSS 2032 provides registers for managing functions such as the Home Location Register (not shown) and stores user-specific information such as service features and data rates. All user data can be sent through SGW2034, PGW2035 can provide IP address allocation and other functions for UE 201, PCRF2036 is the policy and charging control policy decision point for service data flow and IP bearer resources, and it selects and provides available policy and charging control decisions for the policy and charging execution function unit (not shown in the figure).

[0143] The IP service 204 may include the Internet, an intranet, an IMS (IP Multimedia Subsystem), or other IP services.

[0144] Although the above introduction takes the LTE system as an example, those skilled in the art should know that this application is not only applicable to the LTE system, but can also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., which are not limited here.

[0145] FIG3 is a schematic diagram of the hardware structure of a controller 140 provided in this application. The controller 140 includes a memory 1401 and a processor 1402. The memory 1401 is used to store program instructions, and the processor 1402 is used to call the program instructions in the memory 1401 to execute the steps performed by the controller in the first embodiment of the above method. The implementation principles and beneficial effects are similar and will not be repeated here.

[0146] Optionally, the controller further includes a communication interface 1403, which can be connected to the processor 1402 via a bus 1404. The processor 1402 can control the communication interface 1403 to implement the receiving and sending functions of the controller 140.

[0147] Figure 4 is a schematic diagram of the hardware structure of a network device 150 provided in this application. The network device 150 includes: a memory 1501 and a processor 1502. The memory 1501 is used to store program instructions, and the processor 1502 is used to call the program instructions in the memory 1501 to execute the steps performed by the first node in the first embodiment of the above method. The implementation principles and beneficial effects are similar and will not be repeated here.

[0148] Optionally, the controller further includes a communication interface 1503, which can be connected to the processor 1502 via a bus 1504. The processor 1502 can control the communication interface 1503 to implement the receiving and sending functions of the network device 150.

[0149] The integrated modules implemented in the form of software function modules can be stored in a computer-readable storage medium. The software function modules stored in a storage medium include a number of instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute some of the steps of the methods of various embodiments of the present application.

[0150] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a storage medium or transmitted from one storage medium to another storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive solid state disk, SSD), etc.

[0151] Based on the above-mentioned mobile terminal hardware structure and communication network system, various embodiments of the present application are proposed.

[0152] Technical terms involved in the embodiments of this application:

[0153] Feeder Link: feeder link;

[0154] S&F mode: Store&Forward mode, store and forward mode;

[0155] RRC: Radio Resource Control;

[0156] ISL: Inter-Satellite Link, connection between satellites;

[0157] CIoT: Cellular Internet of Things

[0158] EPS: Evolved Packet System;

[0159] UP CIoT EPS optimisations: User plane CIoT EPS optimisation, user plane cellular IoT evolved packet system optimization;

[0160] RRC IDLE state: Radio Resource Control IDLE state, radio resource control idle state;

[0161] SRB: Signaling Radio Bearer, signaling radio bearer;

[0162] DRB: Data Radio Bearer, data radio bearer;

[0163] AS security: Access Stratum security, access layer security;

[0164] resume id: resume ID;

[0165] resume id list: resume identifier list.

[0166] UE: User Equipment, user equipment, terminal equipment;

[0167] NTN: Non-Terrestrial Network, non-terrestrial network;

[0168] IoT-NTN: Internet of Things-Non-Terrestrial Network;

[0169] NH: Next Hop, next hop;

[0170] NCC: Next hop chaining counter, next hop link counter;

[0171] UE Context Suspend Request: terminal device context suspend request;

[0172] AS security information: Access Stratum security information, access layer security information;

[0173] satellite ID list: satellite ID list;

[0174] monitoring list: monitoring list;

[0175] S-GW: Serving Gateway;

[0176] MME-onboard: Mobility Management Entity-onboard, the mobility management entity is on the satellite, that is, the MME part is on the satellite

[0177] MME-ground: Mobility Management Entity ground, the mobility management entity is on the ground, that is, the MME part is on the ground network;

[0178] PCI: Physical Cell Identifier, physical cell identifier;

[0179] EARFCN-DL: E-UTRA Absolute Radio Frequency Channel Number downlink, E-UTRA absolute radio frequency channel number - downlink.

[0180] The embodiment of the present application takes into account that in UP mode (user-side cellular IoT evolved packet system optimization mode), when the terminal device initiates an RRC connection recovery request from a new network device (i.e., a network device that is ready to restore the RRC connection, such as a new eNB), the security key (KeNB*) used by the new network device needs to be determined or generated by the old network device (i.e., the network device that suspends the RRC connection, such as the old eNB) according to the PCI (physical cell identifier) ​​and frequency (such as EARFCN-DL) of the cell corresponding to the new network device and sent to the new network device. In NTN (non-terrestrial network), due to the high-speed movement of the satellite, the terminal device is likely to initiate an RRC connection recovery request from the new network device. In S&F (store and forward) mode, since the new network device and the old network device may not be directly connected, the new network device cannot obtain the security key from the old network device, resulting in the UP mode being unusable.

[0181] Therefore, the technical solution of this application is mainly aimed at the satellite (base station) storage and forwarding mode, and proposes a new technical solution to improve the key processing mechanism of the satellite (base station) storage and forwarding mode, thereby ensuring that the UP mode can be used normally.

[0182] As shown in Figure 5, the signaling process involved in the technical solution of this application includes:

[0183] 01: The first network node (such as the current eNB or cell or satellite) broadcasts in store-and-forward mode;

[0184] 02: The terminal device receives a fourth network node information list (eg, a satellite identification list or a monitoring list) sent by a second network node (eg, a core network);

[0185] 1: The first network node decides to suspend the RRC connection;

[0186] 2: The first network node sends a terminal device context suspension request to the second network node (the request carries a network node information list request or a second network node information list);

[0187] 3: The second network node sends a terminal device context suspension response, which carries the first network node information list;

[0188] 4: The first network node determines or generates access layer security information corresponding to each network node according to the first network node information list, where the access layer security information includes KeNB* (security key) and / or NCC;

[0189] 5: The first network node sends an RRCConnectionRelease message to the terminal device, where the message carries a list of information about the third network node;

[0190] 05: The terminal device receives the RRCConnectionRelease message and saves the terminal device context;

[0191] 6: The first network node and the ground feeder link are restored;

[0192] 7: The first network node sends the generated access layer security information and / or resume ID to the corresponding network node;

[0193] 8: The corresponding network node saves the received access layer security information and / or resume ID;

[0194] 9: The terminal device initiates an RRC connection recovery request at the corresponding network node, and the request carries a resume ID;

[0195] 10. After receiving the RRC connection recovery request, the network node sends an RRC connection recovery message, which carries the saved NCC value.

[0196] 11. The terminal device responds to the RRCConnectionResumeComplete message to confirm that the RRC connection has been restored.

[0197] It should be noted that the network nodes in the technical solution of this application can be satellites, base stations, cells, core networks, parts of core networks (such as MMEground or MME-onboard), or base stations and (parts of) core networks as a whole, without specific limitations. A satellite may include a base station and a complete core network, or a base station and part of a core network.

[0198] The following describes various embodiments of the present application based on the above signaling process.

[0199] First embodiment

[0200] 6 , which is a flow chart of a processing method according to a first embodiment of the present application, the processing method according to the embodiment of the present application can be applied to a first network node (such as a base station), and includes the following steps:

[0201] S2: The first network node determines or generates first information based on the first network node information list.

[0202] The technical solution of the embodiment of the present application is applied to the scenario of the store-and-forward mode. In the store-and-forward mode, there is no feeder link / S1 connection between the network device and the ground, and there may be no direct connection between the network devices. In the NTN (non-terrestrial network), due to the high-speed movement of the satellite, the terminal device is likely to initiate an RRC connection recovery request from the new network device (i.e., the network device that is ready to restore the RRC connection). In the store-and-forward mode, since the new network device and the old network device (i.e., the network device that suspends the RRC connection) may not have a direct connection, the new network device cannot obtain the security key from the old network device, resulting in the UP mode being unusable.

[0203] Therefore, the embodiment of the present application proposes a new technical solution for the satellite (base station) storage and forwarding mode to improve the key processing mechanism of the satellite (base station) storage and forwarding mode, thereby ensuring that the UP mode can be used normally.

[0204] Optionally, the network device may broadcast that the current working mode is the store-and-forward mode, and / or the mode conversion time T1 (ie, the connection with the ground feeder link is restored at T1 and the device works in the normal mode).

[0205] Optionally, the store-and-forward mode is indicated by the network device to the terminal device.

[0206] Optionally, the network device broadcasts a system message, where the system message carries a store-and-forward mode indication and / or a mode switching time.

[0207] In this embodiment, the network equipment includes various network nodes. Optionally, the network node can be a satellite, a base station, a cell, a core network device\part of the core network device (such as MMEground or MME-onboard) or a base station and (part of) the core network device as a whole, without specific limitation.

[0208] Optionally, the satellite may include a base station and core network equipment, or a base station and part of the core network equipment.

[0209] Optionally, base stations and (part of) core network equipment are deployed on satellites.

[0210] Optionally, the technical solution of this embodiment involves a first network node and a second network node.

[0211] Optionally, the first network node is a base station.

[0212] Optionally, the second network node is (part of) a core network device.

[0213] Optionally, the first information is related to a security key.

[0214] Optionally, the first information includes an access layer security information list.

[0215] Optionally, the first network node operates in a store-and-forward mode. For example, the first network node may broadcast that the current operating mode is the store-and-forward mode and / or a mode conversion time T1 (ie, the connection with the ground feeder link is restored at T1 and the node operates in a normal mode).

[0216] Optionally, the first network node broadcasts a system message, where the system message carries a store-and-forward mode indication and / or a mode switching time.

[0217] Optionally, the first network node decides to suspend the RRC connection.

[0218] Optionally, the first network node sends a first message to the second network node. The first message may be, for example, a terminal device context suspension request.

[0219] Optionally, the second network node receives the first message sent by the first network node, and sends a second message to the first network node.

[0220] Optionally, the first network node receives a second message from the second network node. The second message may be, for example, a terminal device context suspension response.

[0221] Optionally, the first message carries at least one of the following: a store-and-forward indication, a network node information list request, and a second network node information list.

[0222] Optionally, the store-and-forward indication is used to indicate that the current network node operates in a store-and-forward mode.

[0223] Optionally, the second message carries at least one of the following: a first network node information list, a next hop (NH), and a next hop link counter (NCC).

[0224] Optionally, the first network node information list carries information of network nodes from which the terminal device may (subsequently) initiate services (such as mo / mt data / signaling).

[0225] Optionally, the first network node information includes at least one of the following: a satellite identifier, a base station identifier, and a cell identifier.

[0226] Optionally, the first network node information list is determined or generated based on the second network node information list.

[0227] Optionally, the first network node information list is identical or partially identical to the second network node information list.

[0228] Optionally, the first network node information list is determined or generated by the first network node, and / or the first network node information list is obtained by the first network node from the second message.

[0229] Optionally, the first network node sends a terminal device context suspension request to the second network node, and receives a terminal device context suspension response from the second network node.

[0230] Optionally, the first network node information list determined or generated by the first network node includes at least one of the following:

[0231] The first network node sends a terminal device context suspension request to the second network node, where the terminal device context suspension request carries a first network node information list. The second network node further confirms the first network node information list sent by the first network node and sends the confirmed first network node information list to the first network node through a terminal device context suspension response.

[0232] The first network node determines or generates a first network node information list according to the network node information list provided by the terminal device.

[0233] Optionally, the network node information list is obtained by the terminal device according to a fourth network node information list provided by the second network node (such as a core network device).

[0234] Optionally, the first network node information list obtained by the first network node from the second message includes at least one of the following:

[0235] The first network node sends a terminal device context suspension request to the second network node, where the terminal device context suspension request carries a network node information list request, requesting the second network node to provide a first network node information list, i.e., the second network node provides the first network node information list according to the request of the first network node, and sends the first network node information list to the first network node through a terminal device context suspension response;

[0236] The first network node determines or generates a second network node information list, the first network node sends a terminal device context suspension request to the second network node, the terminal device context suspension request carries the second network node information list, the second network node obtains the first network node information list based on the second network node information list sent by the first network node, and sends the first network node information list to the first network node through a terminal device context suspension response. Optionally, the first network node information list and the second network node information list may be identical or partially identical.

[0237] Optionally, the first network node may determine or generate the second network node information list using the following solution:

[0238] Optionally, the first network node receives an access request sent by the terminal device.

[0239] Optionally, the access request includes at least one of the service mode information of the terminal device, the location information of the terminal device, a request to configure a network node list, a network node information list, and a request to retain the context of the terminal device.

[0240] Optionally, the service mode information of the terminal device includes at least one of a service cycle, a service volume and a delay requirement.

[0241] Optionally, the location information of the terminal device includes at least one of the current location information of the terminal device, the predicted location information of the terminal device, and the trajectory information of the terminal device.

[0242] Optionally, the location information may be TAC information or GNSS location information.

[0243] Optionally, the network node information list provided by the terminal device carries information of the network device for the terminal device to initiate an RRC connection recovery request and / or monitor paging.

[0244] Optionally, the network node information list provided by the terminal device is obtained by the terminal device according to at least one of service mode information, location information, satellite auxiliary information and historical network device access information of the terminal device.

[0245] Optionally, the network node information list provided by the terminal device is obtained by the terminal device according to a fourth network node information list provided by the second network node (such as a core network device).

[0246] Optionally, the first network node determines or generates the second network node information list according to the network node information list provided by the terminal device.

[0247] Optionally, the first network node determines or generates the second network node information list according to at least one of the service mode information provided by the terminal device and the location information of the terminal device.

[0248] Optionally, the first network node determines or generates the first information based on the first network node information list, including: determining or generating access layer security information based on at least one of the cell's physical cell identifier, frequency (such as EARFCN-DL), current security key (such as KeNB), and next hop (such as NH).

[0249] Optionally, the physical cell identifier and / or frequency is determined according to the first network node information list.

[0250] Optionally, the access layer security information includes a security key (such as KeNB*) and / or a next hop link counter (such as NCC).

[0251] Through the technical solution of this embodiment, the first network node determines or generates the first information based on the first network node information list, which can improve the key processing mechanism of the satellite (base station) storage and forwarding mode, thereby ensuring that the UP mode can be used normally.

[0252] Second embodiment

[0253] Based on the first embodiment of the present application, a second embodiment of the present application is proposed. This embodiment mainly describes a specific processing flow of the first network node determining or generating the first information based on the first network node information list.

[0254] Optionally, the technical solution of this embodiment involves a first network node and a second network node.

[0255] Optionally, the first network node is a base station.

[0256] Optionally, the second network node is (part of) a core network device.

[0257] Optionally, the first network node determines or generates the first information based on the first network node information list to improve the key processing mechanism of the satellite (base station) storage and forwarding mode to ensure that the UP mode can be used normally.

[0258] Optionally, the first network node broadcasts that the current working mode is the store-and-forward mode, and the first network node decides to suspend the RRC connection.

[0259] Optionally, the first network node sends a terminal device context suspension request to the second network node, and receives a terminal device context suspension response from the second network node.

[0260] Optionally, the first network node determines or generates a first network node information list.

[0261] Optionally, the terminal device context suspension response carries a first network node information list.

[0262] Optionally, the first network node obtains the first network node information list from the terminal device context suspension response.

[0263] Optionally, the first network node determines or generates the first information based on the first network node information list.

[0264] Optionally, the first information is related to a security key.

[0265] Optionally, the first information includes an access layer security information list.

[0266] Optionally, the first network node determines or generates the first information based on the first network node information list, including step S21 and step S22:

[0267] Step S21: The first network node determines the physical cell identifier and / or frequency of the corresponding cell according to the first network node information list;

[0268] In step S22, the first network node determines or generates access layer security information according to at least one of the physical cell identifier, frequency, current security key (KeNB), and next hop (NH) of the cell.

[0269] Optionally, the frequency point may be EARFCN-DL.

[0270] Optionally, the access layer security information includes a security key (KeNB*) and / or a next hop link counter (NCC).

[0271] Optionally, the first network node determines the physical cell identifier (PCI) and frequency of the corresponding cell based on the first network node information list. For example, the base station on the satellite is first determined based on the satellite ID, and then the cell on the base station is determined, and then the physical cell identifier and frequency of the cell are determined, and then the access layer security information (AS security information) is determined or generated based on at least one of the corresponding physical cell identifier, frequency, current security key or next hop.

[0272] Optionally, the first network node determines the physical cell identifier (PCI) and frequency of the corresponding cell based on the first network node information list, for example, determines the corresponding physical cell identifier and frequency from a cell configuration database based on the corresponding cell identifier (Cell-ID) in the first network node information list.

[0273] Optionally, the first network node information list is determined or generated by the first network node, and / or the first network node information list is obtained by the first network node from a terminal device context suspension response.

[0274] Optionally, the terminal device context suspension request carries at least one of the following: a store-and-forward indication, a network node information list request, and a second network node information list.

[0275] Optionally, the store-and-forward indication is used to indicate that the current network node operates in a store-and-forward mode.

[0276] Optionally, the terminal device context suspension response carries at least one of the following: a first network node information list, a next hop, and a next hop link counter.

[0277] Optionally, the first network node information includes at least one of the following: a satellite identifier, a base station identifier, and a cell identifier.

[0278] Optionally, the first network node information list is determined or generated based on the second network node information list.

[0279] Optionally, the first network node information list is identical or partially identical to the second network node information list.

[0280] Optionally, the first network node information list determined or generated by the first network node includes at least one of the following:

[0281] The first network node sends a terminal device context suspension request to the second network node, where the terminal device context suspension request carries a first network node information list. The second network node further confirms the first network node information list sent by the first network node and sends the confirmed first network node information list to the first network node through a terminal device context suspension response.

[0282] The first network node determines or generates a first network node information list according to the network node information list provided by the terminal device.

[0283] Optionally, the network node information list is obtained by the terminal device according to a fourth network node information list provided by the second network node (such as a core network device).

[0284] Optionally, the first network node information list obtained by the first network node from the second message includes at least one of the following:

[0285] The first network node sends a terminal device context suspension request to the second network node, where the terminal device context suspension request carries a network node information list request, requesting the second network node to provide a first network node information list, i.e., the second network node provides the first network node information list according to the request of the first network node, and sends the first network node information list to the first network node through a terminal device context suspension response;

[0286] The first network node determines or generates a second network node information list, the first network node sends a terminal device context suspension request to the second network node, the terminal device context suspension request carries the second network node information list, the second network node obtains the first network node information list based on the second network node information list sent by the first network node, and sends the first network node information list to the first network node through a terminal device context suspension response. Optionally, the first network node information list and the second network node information list may be identical or partially identical.

[0287] Through the technical solution of this embodiment, the first network node determines or generates the first information based on the first network node information list, specifically determines the physical cell identifier and / or frequency of the corresponding cell according to the first network node information list, and determines or generates the access layer security information based on at least one of the physical cell identifier, frequency, current security key, and next hop of the cell. This can improve the key processing mechanism of the satellite (base station) storage and forwarding mode to ensure that the UP mode can be used normally.

[0288] Third embodiment

[0289] Based on any of the above embodiments of the present application, a third embodiment of the present application is proposed. This embodiment mainly describes the relevant processing flow of the first network node sending the first information.

[0290] Optionally, the technical solution of this embodiment involves a first network node and a second network node.

[0291] Optionally, the first network node is a base station.

[0292] Optionally, the second network node is (part of) a core network device.

[0293] Optionally, the first network node broadcasts that the current working mode is the store-and-forward mode and / or a mode conversion time.

[0294] Optionally, the terminal device receives a third message sent by the second network node.

[0295] Optionally, the third message includes a fourth network node information list.

[0296] Optionally, the fourth network node information list includes a satellite identification list and / or a monitoring list.

[0297] Optionally, the first network node decides to suspend the RRC connection.

[0298] Optionally, the first network node sends a terminal device context suspension request to the second network node, and receives a terminal device context suspension response from the second network node.

[0299] Optionally, the first network node determines or generates a first network node information list.

[0300] Optionally, the terminal device context suspension request carries at least one of the following: a store-and-forward indication, a network node information list request, and a second network node information list.

[0301] Optionally, the store-and-forward indication is used to indicate that the current network node operates in a store-and-forward mode.

[0302] Optionally, the terminal device context suspension response carries at least one of the following: a first network node information list, a next hop, and a next hop link counter.

[0303] Optionally, the first network node information includes at least one of the following: a satellite identifier, a base station identifier, and a cell identifier.

[0304] Optionally, the first network node information list is determined or generated based on the second network node information list.

[0305] Optionally, the first network node information list is identical or partially identical to the second network node information list.

[0306] Optionally, the first network node obtains the first network node information list from the terminal device context suspension response.

[0307] Optionally, the first network node determines or generates the first network node information list according to the network node information list provided by the terminal device.

[0308] Optionally, the network node information list is obtained by the terminal device according to the fourth network node information list.

[0309] Optionally, the first network node determines or generates the first information based on the first network node information list.

[0310] Optionally, the first information is related to a security key to improve the key processing mechanism of the satellite (base station) store-and-forward mode and ensure that the UP mode can be used normally.

[0311] Optionally, the first network node sends an RRC connection release message to the terminal device.

[0312] Optionally, the RRC connection release message carries at least one of the following: an RRC release reason, a recovery identifier, a recovery identifier list, a next hop link counter, and a third network node information list.

[0313] Optionally, the third network node information list is determined or generated according to the first network node information list.

[0314] Optionally, the third network node information list is the same as the first network node information list.

[0315] Optionally, the third network node information includes at least one of a satellite identifier, a base station identifier, a cell identifier, a physical cell identifier, a frequency point, and satellite auxiliary information.

[0316] Optionally, the satellite assistance information includes at least one item such as satellite ephemeris information and coverage parameters.

[0317] Optionally, the terminal device receives an RRCConnectionRelease message and saves the terminal device context.

[0318] Optionally, the terminal device monitors paging or initiates an RRC connection recovery request at the network node corresponding to the third network node information list.

[0319] Optionally, after the connection with the ground feeder link is restored, the first network node sends the first information to the corresponding network node.

[0320] Optionally, the first network node sends the first information to the corresponding network node directly or indirectly. For example, the first network node sends the first information to the corresponding network node through a terrestrial network.

[0321] Optionally, the first network node sends the first information to a core network device, and then sends the first information to a corresponding network node through the core network device and / or the ground network.

[0322] Optionally, the core network device is located on the satellite, or part of the core network device is located on the satellite (such as MME-onboard), and another part of the core network device (such as MME-ground) is located on the ground.

[0323] Optionally, the ground network is a mobility management entity on the ground (MME-ground).

[0324] Optionally, the first information includes an access layer security information list, and the first network node sends the access layer security information to the corresponding network node through the ground network.

[0325] Optionally, the access layer security information includes a security key and / or a next-hop link counter.

[0326] Optionally, the corresponding network nodes include network nodes in the first network node information list and / or the third network node information list.

[0327] Optionally, the corresponding network node is at least one of a base station, a cell, a core network device and a satellite.

[0328] Optionally, the first network node sends at least one of the determined or generated access layer security information, access layer security information list, recovery identifier (resume ID), and recovery identifier list to the corresponding network node, and the corresponding network node saves at least one of the received access layer security information, access layer security information list, recovery identifier, and recovery identifier list.

[0329] Optionally, the recovery identification list carries information of the network node for the terminal device to initiate an RRC connection recovery request and / or monitor paging.

[0330] Optionally, the terminal device initiates an RRC connection recovery request at the corresponding network node.

[0331] Optionally, the RRC connection recovery request carries at least one of a corresponding recovery identifier, a network device identifier, and a terminal device context identifier.

[0332] Optionally, after receiving the RRC connection recovery request, the corresponding network node sends an RRC connection recovery message, where the RRC connection recovery message carries the saved NCC value.

[0333] Optionally, the terminal device responds to the RRCConnectionResumeComplete message to confirm that the RRC connection has been restored. The corresponding network node subsequently communicates with the terminal device using the stored access layer security information.

[0334] Through the technical solution of this embodiment, the first network node determines or generates the first information based on the first network node information list and sends the first information to the corresponding network node, which can improve the key processing mechanism of the satellite (base station) storage and forwarding mode and ensure that the UP mode can be used normally.

[0335] Fourth embodiment

[0336] 7 , which is a flow chart of a processing method according to a fourth embodiment of the present application, the processing method according to the embodiment of the present application can be applied to a second network node (such as a core network device), and includes the following steps:

[0337] S1: The second network node sends a second message to enable the first network node to determine or generate first information based on the first network node information list.

[0338] The technical solution of the embodiment of the present application is aimed at the satellite (base station) storage and forwarding mode, and proposes a new technical solution to improve the key processing mechanism of the satellite (base station) storage and forwarding mode, thereby ensuring that the UP mode can be used normally.

[0339] Optionally, the network device may broadcast that the current working mode is the store-and-forward mode, and / or the mode conversion time T1 (ie, the connection with the ground feeder link is restored at T1 and the device works in the normal mode).

[0340] Optionally, the store-and-forward mode is indicated by the network device to the terminal device.

[0341] Optionally, the network device broadcasts a system message, where the system message carries a store-and-forward mode indication and / or a mode switching time.

[0342] In this embodiment, the network equipment includes various network nodes. Optionally, the network node can be a satellite, a base station, a cell, a core network device\part of the core network device (such as MMEground or MME-onboard) or a base station and (part of) the core network device as a whole, without specific limitation.

[0343] Optionally, the satellite may include a base station and core network equipment, or a base station and part of the core network equipment.

[0344] Optionally, base stations and (part of) core network equipment are deployed on satellites.

[0345] Optionally, the technical solution of this embodiment involves a first network node and a second network node.

[0346] Optionally, the first network node is a base station.

[0347] Optionally, the second network node is a core network device.

[0348] Optionally, the core network device is located on the satellite, or part of the core network device is located on the satellite (such as MME-onboard), and another part of the core network device (such as MME-ground) is located on the ground.

[0349] Optionally, the first network node operates in a store-and-forward mode. For example, the first network node may broadcast that the current operating mode is the store-and-forward mode and / or a mode conversion time T1 (ie, the connection with the ground feeder link is restored at T1 and the node operates in a normal mode).

[0350] Optionally, the first network node broadcasts a system message, where the system message carries a store-and-forward mode indication and / or a mode switching time.

[0351] Optionally, the second network node sends a third message to the terminal device. Optionally, the third message includes a fourth network node information list.

[0352] Optionally, the fourth network node information list includes a satellite identification list and / or a monitoring list.

[0353] Optionally, the terminal device receives a third message sent by the second network node.

[0354] Optionally, the first network node decides to suspend the RRC connection.

[0355] Optionally, the first network node sends a first message to the second network node. The first message may be, for example, a terminal device context suspension request.

[0356] Optionally, the second network node receives the first message sent by the first network node.

[0357] Optionally, the second network node sends a second message to the first network node, so that the first network node determines or generates the first information based on the first network node information list.

[0358] Optionally, the first network node receives a second message from the second network node. The second message may be, for example, a terminal device context suspension response.

[0359] Optionally, the first message carries at least one of the following: a store-and-forward indication, a network node information list request, and a second network node information list.

[0360] Optionally, the second message carries at least one of the following: a first network node information list, a next hop, and a next hop link counter.

[0361] Optionally, the first network node determines or generates the first information based on the first network node information list to improve the key processing mechanism of the satellite (base station) storage and forwarding mode to ensure that the UP mode can be used normally.

[0362] Optionally, the first information is related to a security key.

[0363] Optionally, the first information includes an access layer security information list.

[0364] Optionally, the store-and-forward indication is used to indicate that the current network node operates in a store-and-forward mode.

[0365] Optionally, the first network node information list carries information of network nodes from which the terminal device may (subsequently) initiate services (such as mo / mt data / signaling).

[0366] Optionally, the first network node information includes at least one of the following: a satellite identifier, a base station identifier, and a cell identifier.

[0367] Optionally, the first network node information list is determined or generated based on the second network node information list.

[0368] Optionally, the first network node information list is identical or partially identical to the second network node information list.

[0369] Optionally, the first network node information list is determined or generated by the first network node, and / or the first network node information list is obtained by the first network node from the second message.

[0370] Optionally, the first network node sends a terminal device context suspension request to the second network node, and receives a terminal device context suspension response from the second network node.

[0371] Optionally, the first network node information list determined or generated by the first network node includes at least one of the following:

[0372] The first network node sends a terminal device context suspension request to the second network node, where the terminal device context suspension request carries a first network node information list. The second network node further confirms the first network node information list sent by the first network node and sends the confirmed first network node information list to the first network node through a terminal device context suspension response.

[0373] The first network node determines or generates a first network node information list according to the network node information list provided by the terminal device.

[0374] Optionally, the network node information list is obtained by the terminal device according to a fourth network node information list provided by the second network node (such as a core network device).

[0375] Optionally, the first network node information list obtained by the first network node from the second message includes at least one of the following:

[0376] The first network node sends a terminal device context suspension request to the second network node, where the terminal device context suspension request carries a network node information list request, requesting the second network node to provide a first network node information list, i.e., the second network node provides the first network node information list according to the request of the first network node, and sends the first network node information list to the first network node through a terminal device context suspension response;

[0377] The first network node determines or generates a second network node information list, the first network node sends a terminal device context suspension request to the second network node, the terminal device context suspension request carries the second network node information list, the second network node obtains the first network node information list based on the second network node information list sent by the first network node, and sends the first network node information list to the first network node through a terminal device context suspension response. Optionally, the first network node information list and the second network node information list may be identical or partially identical.

[0378] Optionally, the first network node may determine or generate the second network node information list using the following solution:

[0379] Optionally, the first network node receives an access request sent by the terminal device.

[0380] Optionally, the access request includes at least one of the service mode information of the terminal device, the location information of the terminal device, a request to configure a network node list, a network node information list, and a request to retain the context of the terminal device.

[0381] Optionally, the service mode information of the terminal device includes at least one of a service cycle, a service volume and a delay requirement.

[0382] Optionally, the location information of the terminal device includes at least one of the current location information of the terminal device, the predicted location information of the terminal device, and the trajectory information of the terminal device.

[0383] Optionally, the location information may be TAC information or GNSS location information.

[0384] Optionally, the network node information list provided by the terminal device carries information of the network device for the terminal device to initiate an RRC connection recovery request and / or monitor paging.

[0385] Optionally, the network node information list provided by the terminal device is obtained by the terminal device according to at least one of service mode information, location information, satellite auxiliary information and historical network device access information of the terminal device.

[0386] Optionally, the network node information list provided by the terminal device is obtained by the terminal device according to a fourth network node information list provided by the second network node (such as a core network device).

[0387] Optionally, the first network node determines or generates the second network node information list according to the network node information list provided by the terminal device.

[0388] Optionally, the first network node determines or generates the second network node information list according to at least one of the service mode information provided by the terminal device and the location information of the terminal device.

[0389] Optionally, the first network node determines or generates the first information based on the first network node information list, including: the first network node determines or generates access layer security information based on at least one of the cell's physical cell identifier, frequency (such as EARFCN-DL), current security key (such as KeNB), and next hop (such as NH).

[0390] Optionally, the physical cell identifier and / or frequency is determined according to the first network node information list.

[0391] Optionally, the access layer security information includes a security key (such as KeNB*) and / or a next hop link counter (such as NCC).

[0392] Optionally, the first network node sends an RRC connection release message to the terminal device.

[0393] Optionally, the RRC connection release message carries at least one of the following: an RRC release reason, a recovery identifier, a recovery identifier list, a next hop link counter, and a third network node information list.

[0394] Optionally, the third network node information list is determined or generated according to the first network node information list.

[0395] Optionally, the third network node information list is the same as the first network node information list.

[0396] Optionally, the third network node information includes at least one of a satellite identifier, a base station identifier, a cell identifier, a physical cell identifier, a frequency point, and satellite auxiliary information.

[0397] Optionally, the satellite assistance information includes at least one item such as satellite ephemeris information and coverage parameters.

[0398] Optionally, the terminal device receives an RRC connection release message and saves the terminal device context.

[0399] Optionally, the terminal device monitors paging or initiates an RRC connection recovery request at the network node corresponding to the third network node information list.

[0400] Optionally, after the connection with the ground feeder link is restored, the first network node sends the first information to the corresponding network node.

[0401] Optionally, the first network node sends the first information to the corresponding network node directly or indirectly. For example, the first network node sends the first information to the corresponding network node through a terrestrial network.

[0402] Optionally, the ground network is a mobility management entity on the ground (MME ground).

[0403] Optionally, the first network node sends the first information to a core network device, and then sends the first information to a corresponding network node through the core network device and / or the ground network.

[0404] Optionally, the core network device is located on the satellite, or part of the core network device is located on the satellite (such as MME-onboard), and another part of the core network device (such as MME-ground) is located on the ground.

[0405] Optionally, the first information includes an access layer security information list, and the first network node sends the access layer security information to the corresponding network node through the ground network.

[0406] Optionally, the access layer security information includes a security key and / or a next-hop link counter.

[0407] Optionally, the first network node sends at least one of the determined or generated access layer security information, access layer security information list, recovery identifier (resume ID), and recovery identifier list to the corresponding network node, and the corresponding network node saves at least one of the received access layer security information, access layer security information list, recovery identifier, and recovery identifier list.

[0408] Optionally, the corresponding network nodes include network nodes in the first network node information list and / or the third network node information list.

[0409] Optionally, the corresponding network node includes a second network node, and the second network node receives the first information from the first network node.

[0410] Optionally, the recovery identification list carries information of the network node for the terminal device to initiate an RRC connection recovery request and / or monitor paging.

[0411] Optionally, the terminal device initiates an RRC connection recovery request at the corresponding network node.

[0412] Optionally, the RRC connection recovery request carries at least one of a corresponding recovery identifier, a network device identifier, and a terminal device context identifier.

[0413] Optionally, after receiving the RRC connection recovery request, the corresponding network node sends an RRC connection recovery message, where the RRC connection recovery message carries the saved NCC value.

[0414] Optionally, the terminal device responds to the RRCConnectionResumeComplete message to confirm that the RRC connection has been restored. The corresponding network node subsequently communicates with the terminal device using the stored access layer security information.

[0415] Through the technical solution of this embodiment, the second network node sends the second message so that the first network node determines or generates the first information based on the first network node information list, which can improve the key processing mechanism of the satellite (base station) storage and forwarding mode, thereby ensuring that the UP mode can be used normally.

[0416] Fifth embodiment

[0417] 8 , which is a flowchart of a processing method according to a fifth embodiment of the present application, the processing method according to the embodiment of the present application can be applied to a terminal device (such as a mobile phone), and includes the following steps:

[0418] S3: The terminal device receives an RRC connection release message sent by the first network node after determining or generating the first information.

[0419] The technical solution of the embodiment of the present application is aimed at the satellite (base station) storage and forwarding mode, and proposes a new technical solution to improve the key processing mechanism of the satellite (base station) storage and forwarding mode, thereby ensuring that the UP mode can be used normally.

[0420] Optionally, the network device may broadcast that the current working mode is the store-and-forward mode, and / or the mode conversion time T1 (ie, the connection with the ground feeder link is restored at T1 and the device works in the normal mode).

[0421] Optionally, the store-and-forward mode is indicated by the network device to the terminal device.

[0422] Optionally, the network device broadcasts a system message, where the system message carries a store-and-forward mode indication and / or a mode switching time.

[0423] In this embodiment, the network equipment includes various network nodes. Optionally, the network node can be a satellite, a base station, a cell, a core network device\part of the core network device (such as MMEground or MME-onboard) or a base station and (part of) the core network device as a whole, without specific limitation.

[0424] Optionally, the satellite may include a base station and core network equipment, or a base station and part of the core network equipment.

[0425] Optionally, base stations and (part of) core network equipment are deployed on satellites.

[0426] Optionally, the technical solution of this embodiment involves a first network node and a second network node.

[0427] Optionally, the first network node is a base station.

[0428] Optionally, the second network node is (part of) a core network device.

[0429] Optionally, the terminal device interacts with the first network node and the second network node to implement relevant signaling processing procedures to improve the key processing mechanism of the satellite (base station) storage and forwarding mode to ensure that the UP mode can be used normally.

[0430] Optionally, the terminal device receives an RRC connection release message sent by the first network node after determining or generating the first information.

[0431] Optionally, the first information is determined or generated by the first network node based on a first network node information list.

[0432] Optionally, the first network node operates in a store-and-forward mode. For example, the first network node may broadcast that the current operating mode is the store-and-forward mode and / or a mode conversion time T1 (ie, the connection with the ground feeder link is restored at T1 and the node operates in a normal mode).

[0433] Optionally, the first network node broadcasts a system message, where the system message carries a store-and-forward mode indication and / or a mode switching time.

[0434] Optionally, the first network node sends a first message to the second network node.

[0435] Optionally, the second network node responds to the first network node with a second message.

[0436] Optionally, the second message carries a first network node information list.

[0437] Optionally, the first network node determines or generates the first information based on the first network node information list.

[0438] Optionally, the first network node sends the first information to a corresponding network node.

[0439] Optionally, before the first network node sends the first message to the second network node, the terminal device receives a third message sent by the second network node.

[0440] Optionally, the first network node decides to suspend the RRC connection.

[0441] Optionally, the first network node sends a first message to the second network node. The first message may be, for example, a terminal device context suspension request.

[0442] Optionally, the second network node receives the first message sent by the first network node, and sends a second message to the first network node.

[0443] Optionally, the first network node receives a second message from the second network node. The second message may be, for example, a terminal device context suspension response.

[0444] The first message carries at least one of the following: a store-and-forward instruction, a network node information list request, and a second network node information list;

[0445] The second message carries at least one of the following: a first network node information list, a next hop, and a next hop link counter;

[0446] The third message includes a fourth network node information list;

[0447] Optionally, the fourth network node information list includes a satellite identification list and / or a monitoring list.

[0448] Optionally, the first network node determines or generates the first information based on the first network node information list to improve the key processing mechanism of the satellite (base station) storage and forwarding mode to ensure that the UP mode can be used normally.

[0449] Optionally, the first information is related to a security key.

[0450] Optionally, the first information includes an access layer security information list.

[0451] Optionally, the store-and-forward indication is used to indicate that the current network node operates in a store-and-forward mode.

[0452] Optionally, the first network node information list carries information of network nodes from which the terminal device may (subsequently) initiate services (such as mo / mt data / signaling).

[0453] Optionally, the first network node information includes at least one of the following: a satellite identifier, a base station identifier, and a cell identifier.

[0454] Optionally, the first network node information list is determined or generated based on the second network node information list.

[0455] Optionally, the first network node information list is identical or partially identical to the second network node information list.

[0456] Optionally, the first network node information list is determined or generated by the first network node, and / or the first network node information list is obtained by the first network node from the second message.

[0457] Optionally, the first network node sends a terminal device context suspension request to the second network node, and receives a terminal device context suspension response from the second network node.

[0458] Optionally, the first network node information list determined or generated by the first network node includes at least one of the following:

[0459] The first network node sends a terminal device context suspension request to the second network node, where the terminal device context suspension request carries a first network node information list. The second network node further confirms the first network node information list sent by the first network node and sends the confirmed first network node information list to the first network node through a terminal device context suspension response.

[0460] The first network node determines or generates a first network node information list according to the network node information list provided by the terminal device.

[0461] Optionally, the network node information list is obtained by the terminal device according to a fourth network node information list provided by the second network node (such as a core network device).

[0462] Optionally, the first network node information list obtained by the first network node from the second message includes at least one of the following:

[0463] The first network node sends a terminal device context suspension request to the second network node, where the terminal device context suspension request carries a network node information list request, requesting the second network node to provide a first network node information list, i.e., the second network node provides the first network node information list according to the request of the first network node, and sends the first network node information list to the first network node through a terminal device context suspension response;

[0464] The first network node determines or generates a second network node information list, the first network node sends a terminal device context suspension request to the second network node, the terminal device context suspension request carries the second network node information list, the second network node obtains the first network node information list based on the second network node information list sent by the first network node, and sends the first network node information list to the first network node through a terminal device context suspension response. Optionally, the first network node information list and the second network node information list may be identical or partially identical.

[0465] Optionally, the first network node may determine or generate the second network node information list using the following solution:

[0466] Optionally, the first network node receives an access request sent by the terminal device.

[0467] Optionally, the access request includes at least one of the service mode information of the terminal device, the location information of the terminal device, a request to configure a network node list, a network node information list, and a request to retain the context of the terminal device.

[0468] Optionally, the service mode information of the terminal device includes at least one of a service cycle, a service volume and a delay requirement.

[0469] Optionally, the location information of the terminal device includes at least one of the current location information of the terminal device, the predicted location information of the terminal device, and the trajectory information of the terminal device.

[0470] Optionally, the location information may be TAC information or GNSS location information.

[0471] Optionally, the network node information list provided by the terminal device carries information of the network device for the terminal device to initiate an RRC connection recovery request and / or monitor paging.

[0472] Optionally, the network node information list provided by the terminal device is obtained by the terminal device according to at least one of service mode information, location information, satellite auxiliary information and historical network device access information of the terminal device.

[0473] Optionally, the network node information list provided by the terminal device is obtained by the terminal device according to a fourth network node information list provided by the second network node (such as a core network device).

[0474] Optionally, the first network node determines or generates the second network node information list according to the network node information list provided by the terminal device.

[0475] Optionally, the first network node determines or generates the second network node information list according to at least one of the service mode information provided by the terminal device and the location information of the terminal device.

[0476] Optionally, the first network node determines or generates the first information based on the first network node information list, including: the first network node determines or generates access layer security information based on at least one of the cell's physical cell identifier, frequency (such as EARFCN-DL), current security key (such as KeNB), and next hop (such as NH).

[0477] Optionally, the physical cell identifier and / or frequency is determined according to the first network node information list.

[0478] Optionally, the access layer security information includes a security key (such as KeNB*) and / or a next hop link counter (such as NCC).

[0479] Optionally, the first network node sends an RRC connection release message to the terminal device.

[0480] Optionally, the terminal device receives an RRC connection release message sent by the first network node and saves the terminal device context.

[0481] The RRC connection release information carries at least one of the following: an RRC release reason, a recovery identifier, a recovery identifier list, a next hop link counter, and a third network node information list.

[0482] Optionally, the third network node information list is determined or generated according to the first network node information list.

[0483] Optionally, the third network node information list is the same as the first network node information list.

[0484] Optionally, the third network node information includes at least one of a satellite identifier, a base station identifier, a cell identifier, a physical cell identifier, a frequency point, and satellite auxiliary information.

[0485] Optionally, the satellite assistance information includes at least one item such as satellite ephemeris information and coverage parameters.

[0486] Optionally, the terminal device monitors paging or initiates an RRC connection recovery request at the network node corresponding to the third network node information list.

[0487] Optionally, after the connection with the ground feeder link is restored, the first network node sends the first information to the corresponding network node.

[0488] Optionally, the first network node sends the first information to the corresponding network node directly or indirectly. For example, the first network node sends the first information to the corresponding network node through a terrestrial network.

[0489] Optionally, the first network node sends the first information to a core network device, and then sends the first information to a corresponding network node through the core network device and / or the ground network.

[0490] Optionally, the core network device is located on the satellite, or part of the core network device is located on the satellite (such as MME-onboard), and another part of the core network device (such as MME-ground) is located on the ground.

[0491] Optionally, the ground network is a mobility management entity on the ground (MME-ground).

[0492] Optionally, the first information includes an access layer security information list, and the first network node sends the access layer security information to the corresponding network node through the ground network.

[0493] Optionally, the access layer security information includes a security key and / or a next-hop link counter.

[0494] Optionally, the first network node sends at least one of the determined or generated access layer security information, access layer security information list, recovery identifier (resume ID), and recovery identifier list to the corresponding network node, and the corresponding network node saves at least one of the received access layer security information, access layer security information list, recovery identifier, and recovery identifier list.

[0495] Optionally, the corresponding network nodes include network nodes in the first network node information list and / or the third network node information list.

[0496] Optionally, the corresponding network node is at least one of a base station, a cell, a core network device and a satellite.

[0497] Optionally, the corresponding network node includes a second network node, and the second network node receives the first information from the first network node.

[0498] Optionally, the recovery identification list carries information of the network node for the terminal device to initiate an RRC connection recovery request and / or monitor paging.

[0499] Optionally, when paging is monitored or uplink data is sent, the terminal device initiates an RRC connection recovery request at the corresponding network node.

[0500] Optionally, the RRC connection recovery request carries at least one of a corresponding recovery identifier, a network device identifier, and a terminal device context identifier.

[0501] Optionally, after receiving the RRC connection recovery request, the corresponding network node sends an RRC connection recovery message, where the RRC connection recovery message carries the saved NCC value.

[0502] Optionally, the terminal device responds to the RRCConnectionResumeComplete message to confirm that the RRC connection has been restored. The corresponding network node subsequently communicates with the terminal device using the stored access layer security information.

[0503] Through the technical solution of this embodiment, the terminal device receives the RRC connection release message sent by the first network node after determining or generating the first information. The first information is determined or generated based on the first network node information list, which can improve the key processing mechanism of the satellite (base station) storage and forwarding mode, thereby ensuring that the UP mode can be used normally.

[0504] Sixth embodiment

[0505] 9 , which is a schematic diagram of an interaction flow between a terminal device, a first network node, and a second network node according to a processing method according to a sixth embodiment, the sixth embodiment of the present application proposes a processing method, comprising the steps of:

[0506] S1: The second network node sends a second message to enable the first network node to determine or generate first information based on the first network node information list;

[0507] S2: The first network node determines or generates first information based on the first network node information list;

[0508] S3: The terminal device receives an RRC connection release message sent by the first network node after determining or generating the first information.

[0509] Optionally, before step S1, the method further includes:

[0510] S0: The first network node sends a first message to the second network node.

[0511] The technical solution of the embodiment of the present application is aimed at the satellite (base station) storage and forwarding mode, and proposes a new technical solution to improve the key processing mechanism of the satellite (base station) storage and forwarding mode, thereby ensuring that the UP mode can be used normally.

[0512] Optionally, the network device may broadcast that the current working mode is the store-and-forward mode, and / or the mode conversion time T1 (ie, the connection with the ground feeder link is restored at T1 and the device works in the normal mode).

[0513] Optionally, the store-and-forward mode is indicated by the network device to the terminal device.

[0514] Optionally, the network device broadcasts a system message, where the system message carries a store-and-forward mode indication and / or a mode switching time.

[0515] In this embodiment, the network equipment includes various network nodes. Optionally, the network node can be a satellite, a base station, a cell, a core network device\part of the core network device (such as MMEground or MME-onboard) or a base station and (part of) the core network device as a whole, without specific limitation.

[0516] Optionally, the satellite may include a base station and core network equipment, or a base station and part of the core network equipment.

[0517] Optionally, base stations and (part of) core network equipment are deployed on satellites.

[0518] Optionally, the technical solution of this embodiment involves a first network node and a second network node.

[0519] Optionally, the first network node is a base station.

[0520] Optionally, the second network node is (part of) a core network device.

[0521] Optionally, the terminal device interacts with the first network node and the second network node to implement relevant signaling processing procedures to improve the key processing mechanism of the satellite (base station) storage and forwarding mode to ensure that the UP mode can be used normally.

[0522] Optionally, the terminal device receives an RRC connection release message sent by the first network node after determining or generating first information, where the first information is determined or generated based on the first network node information list.

[0523] Optionally, the first network node operates in a store-and-forward mode. For example, the first network node may broadcast that the current operating mode is the store-and-forward mode and / or a mode conversion time T1 (ie, the connection with the ground feeder link is restored at T1 and the node operates in a normal mode).

[0524] Optionally, the first network node broadcasts a system message, where the system message carries a store-and-forward mode indication and / or a mode switching time.

[0525] Optionally, the first network node sends a first message to the second network node.

[0526] Optionally, the second network node responds to the first network node with a second message.

[0527] Optionally, the second message carries a first network node information list.

[0528] Optionally, the first network node determines or generates the first information based on the first network node information list.

[0529] Optionally, the first network node sends the first information to a corresponding network node.

[0530] Optionally, before the first network node sends the first message to the second network node, the terminal device receives a third message sent by the second network node.

[0531] Optionally, the first network node decides to suspend the RRC connection.

[0532] Optionally, the first network node sends a first message to the second network node. The first message may be, for example, a terminal device context suspension request.

[0533] Optionally, the second network node receives the first message sent by the first network node, and sends a second message to the first network node.

[0534] Optionally, the first network node receives a second message from the second network node. The second message may be, for example, a terminal device context suspension response.

[0535] The first message carries at least one of the following: a store-and-forward instruction, a network node information list request, and a second network node information list;

[0536] The second message carries at least one of the following: a first network node information list, a next hop, and a next hop link counter;

[0537] The third message includes a fourth network node information list;

[0538] Optionally, the fourth network node information list includes a satellite identification list and / or a monitoring list.

[0539] Optionally, the first network node determines or generates the first information based on the first network node information list to improve the key processing mechanism of the satellite (base station) storage and forwarding mode to ensure that the UP mode can be used normally.

[0540] Optionally, the first information is related to a security key.

[0541] Optionally, the first information includes an access layer security information list.

[0542] Optionally, the store-and-forward indication is used to indicate that the current network node operates in a store-and-forward mode.

[0543] Optionally, the first network node information list carries information of network nodes from which the terminal device may (subsequently) initiate services (such as mo / mt data / signaling).

[0544] Optionally, the first network node information includes at least one of the following: a satellite identifier, a base station identifier, and a cell identifier.

[0545] Optionally, the first network node information list is determined or generated based on the second network node information list.

[0546] Optionally, the first network node information list is identical or partially identical to the second network node information list.

[0547] Optionally, the first network node information list is determined or generated by the first network node, and / or the first network node information list is obtained by the first network node from the second message.

[0548] Optionally, the first network node sends a terminal device context suspension request to the second network node, and receives a terminal device context suspension response from the second network node.

[0549] Optionally, the first network node information list determined or generated by the first network node includes at least one of the following:

[0550] The first network node sends a terminal device context suspension request to the second network node, where the terminal device context suspension request carries a first network node information list. The second network node further confirms the first network node information list sent by the first network node and sends the confirmed first network node information list to the first network node through a terminal device context suspension response.

[0551] The first network node determines or generates a first network node information list according to the network node information list provided by the terminal device.

[0552] Optionally, the network node information list is obtained by the terminal device according to a fourth network node information list provided by the second network node (such as a core network device).

[0553] Optionally, the first network node information list obtained by the first network node from the second message includes at least one of the following:

[0554] The first network node sends a terminal device context suspension request to the second network node, where the terminal device context suspension request carries a network node information list request, requesting the second network node to provide a first network node information list, i.e., the second network node provides the first network node information list according to the request of the first network node, and sends the first network node information list to the first network node through a terminal device context suspension response;

[0555] The first network node determines or generates a second network node information list, the first network node sends a terminal device context suspension request to the second network node, the terminal device context suspension request carries the second network node information list, the second network node obtains the first network node information list based on the second network node information list sent by the first network node, and sends the first network node information list to the first network node through a terminal device context suspension response. Optionally, the first network node information list and the second network node information list may be identical or partially identical.

[0556] Optionally, the first network node may determine or generate the second network node information list using the following solution:

[0557] Optionally, the first network node receives an access request sent by the terminal device. Optionally, the access request includes at least one of the terminal device's business mode information, the terminal device's location information, a request to configure a network node list, a network node information list, and a request to retain the terminal device context.

[0558] Optionally, the service mode information of the terminal device includes at least one of a service cycle, a service volume and a delay requirement.

[0559] Optionally, the location information of the terminal device includes at least one of the current location information of the terminal device, the predicted location information of the terminal device, and the trajectory information of the terminal device.

[0560] Optionally, the location information may be TAC information or GNSS location information.

[0561] Optionally, the network node information list provided by the terminal device carries information of the network device for the terminal device to initiate an RRC connection recovery request and / or monitor paging.

[0562] Optionally, the network node information list provided by the terminal device is obtained by the terminal device according to at least one of service mode information, location information, satellite auxiliary information and historical network device access information of the terminal device.

[0563] Optionally, the network node information list provided by the terminal device is obtained by the terminal device according to a fourth network node information list provided by the second network node (such as a core network device).

[0564] Optionally, the first network node determines or generates the second network node information list according to the network node information list provided by the terminal device.

[0565] Optionally, the first network node determines or generates the second network node information list according to at least one of the service mode information provided by the terminal device and the location information of the terminal device.

[0566] Optionally, the first network node determines or generates the first information based on the first network node information list, including: the first network node determines or generates access layer security information based on at least one of the cell's physical cell identifier, frequency (such as EARFCN-DL), current security key (such as KeNB), and next hop (such as NH).

[0567] Optionally, the physical cell identifier and / or frequency is determined according to the first network node information list.

[0568] Optionally, the access layer security information includes a security key (such as KeNB*) and / or a next hop link counter (such as NCC).

[0569] Optionally, the first network node sends an RRC connection release message to the terminal device.

[0570] Optionally, the terminal device receives an RRC connection release message sent by the first network node and saves the terminal device context.

[0571] The RRC connection release information carries at least one of the following: an RRC release reason, a recovery identifier, a recovery identifier list, a next hop link counter, and a third network node information list.

[0572] Optionally, the third network node information list is determined or generated according to the first network node information list.

[0573] Optionally, the third network node information list is the same as the first network node information list.

[0574] Optionally, the third network node information includes at least one of a satellite identifier, a base station identifier, a cell identifier, a physical cell identifier, a frequency point, and satellite auxiliary information.

[0575] Optionally, the satellite assistance information includes at least one item such as satellite ephemeris information and coverage parameters.

[0576] Optionally, the terminal device monitors paging or initiates an RRC connection recovery request at the network node corresponding to the third network node information list.

[0577] Optionally, after the connection with the ground feeder link is restored, the first network node sends the first information to the corresponding network node.

[0578] Optionally, the first network node sends the first information to the corresponding network node directly or indirectly. For example, the first network node sends the first information to the corresponding network node through a terrestrial network.

[0579] Optionally, the first network node sends the first information to a core network device, and then sends the first information to a corresponding network node through the core network device and / or the ground network.

[0580] Optionally, the core network device is located on the satellite, or part of the core network device is located on the satellite (such as MME-onboard), and another part of the core network device (such as MME-ground) is located on the ground.

[0581] Optionally, the ground network is a mobility management entity on the ground (MME-ground).

[0582] Optionally, the first information includes an access layer security information list, and the first network node sends the access layer security information to the corresponding network node through the ground network.

[0583] Optionally, the access layer security information includes a security key and / or a next-hop link counter.

[0584] Optionally, the first network node sends at least one of the determined or generated access layer security information, access layer security information list, recovery identifier (resume ID), and recovery identifier list to the corresponding network node, and the corresponding network node saves at least one of the received access layer security information, access layer security information list, recovery identifier, and recovery identifier list.

[0585] Optionally, the corresponding network nodes include network nodes in the first network node information list and / or the third network node information list.

[0586] Optionally, the corresponding network node is at least one of a base station, a cell, a core network device and a satellite.

[0587] Optionally, the corresponding network node includes a second network node, and the second network node receives the first information from the first network node.

[0588] Optionally, the recovery identification list carries information of the network node for the terminal device to initiate an RRC connection recovery request and / or monitor paging.

[0589] Optionally, when paging is monitored or uplink data is sent, the terminal device initiates an RRC connection recovery request at the corresponding network node.

[0590] Optionally, the RRC connection recovery request carries at least one of a corresponding recovery identifier, a network device identifier, and a terminal device context identifier.

[0591] Optionally, after receiving the RRC connection recovery request, the corresponding network node sends an RRC connection recovery message, where the RRC connection recovery message carries the saved NCC value.

[0592] Optionally, the terminal device responds to the RRCConnectionResumeComplete message to confirm that the RRC connection has been restored. The corresponding network node subsequently communicates with the terminal device using the stored access layer security information.

[0593] Through the technical solution of this embodiment, the second network node sends the second message, the first network node determines or generates the first information based on the first network node information list, and the terminal device receives the RRC connection release message sent by the first network node after determining or generating the first information. The key processing mechanism of the satellite (base station) storage and forwarding mode can be improved, thereby ensuring that the UP mode can be used normally.

[0594] Seventh embodiment

[0595] Please refer to Figure 10, which is a schematic diagram of the structure of the processing device provided in an embodiment of the present application. The device can be installed in or is the first network node (such as a base station) in the above method embodiment. As shown in Figure 10, the processing device 150 includes:

[0596] The determining module 1501 is configured to determine or generate first information based on the first network node information list.

[0597] Optionally, the device further comprises at least one of the following:

[0598] sending a first message to a second network node;

[0599] A second message is received from a second network node.

[0600] Optionally, the device further comprises at least one of the following:

[0601] The first network node information list is determined or generated by the first network node;

[0602] The first message carries at least one of the following: a store-and-forward instruction, a network node information list request, and a second network node information list;

[0603] The second message carries at least one of the following: a first network node information list, a next hop, and a next hop link counter;

[0604] The first information includes an access layer security information list.

[0605] Optionally, determining or generating the first information based on the first network node information list includes:

[0606] Access layer security information is determined or generated according to at least one of a physical cell identifier, a frequency, a current security key, and a next hop of the cell.

[0607] Optionally, the device further comprises at least one of the following:

[0608] The physical cell identifier and / or frequency is determined according to the first network node information list;

[0609] Sending the first information to the corresponding network node;

[0610] Send an RRC connection release message to the terminal device.

[0611] Optionally, the device further comprises at least one of the following:

[0612] Send access layer security information to corresponding network nodes;

[0613] The RRC connection release information carries at least one of the following: an RRC release reason, a recovery identifier, a recovery identifier list, a next hop link counter, and a third network node information list;

[0614] Optionally, the device further comprises at least one of the following:

[0615] Access layer security information includes security keys and / or next hop link counters;

[0616] The store-and-forward indication is used to indicate that the current network node is operating in the store-and-forward mode;

[0617] The first network node information includes at least one of the following: a satellite identifier, a base station identifier, and a cell identifier;

[0618] The first network node information list is determined or generated based on the second network node information list;

[0619] The third network node information list is determined or generated according to the first network node information list;

[0620] The third network node information list is the same as the first network node information list;

[0621] The third network node information includes at least one of a satellite identifier, a base station identifier, a cell identifier, a physical cell identifier, a frequency, and satellite assistance information;

[0622] Optionally, the satellite assistance information includes at least one item such as satellite ephemeris information and coverage parameters.

[0623] The corresponding network nodes include network nodes in the first network node information list and / or the third network node information list.

[0624] The processing device provided in the embodiment of the present application has similar implementation principles and beneficial effects to the technical solutions shown in the above-mentioned corresponding method embodiments, and will not be described in detail here.

[0625] Eighth embodiment

[0626] Please refer to Figure 11, which is a second structural diagram of a processing device provided in an embodiment of the present application. The device can be installed in or is the second network node (such as a core network device) in the above method embodiment. As shown in Figure 11, the processing device 160 includes:

[0627] The sending module 1601 is configured to send a second message, so that the first network node determines or generates first information based on the first network node information list.

[0628] Optionally, the device further comprises at least one of the following:

[0629] Sending a third message to the terminal device;

[0630] receiving a first message from a first network node;

[0631] First information is received from a first network node.

[0632] Optionally, the device further comprises at least one of the following:

[0633] The first message carries at least one of the following: a store-and-forward instruction, a network node information list request, and a second network node information list;

[0634] The second message carries at least one of the following: a first network node information list, a next hop, and a next hop link counter;

[0635] The third message includes a fourth network node information list;

[0636] The first information includes an access layer security information list.

[0637] Optionally, the first network node determines or generates the first information based on the first network node information list, including:

[0638] The first network node determines or generates access layer security information according to at least one of a physical cell identifier, a frequency, a current security key, and a next hop of the cell.

[0639] Optionally, the device further comprises at least one of the following:

[0640] Access layer security information includes security keys and / or next hop link counters;

[0641] The store-and-forward indication is used to indicate that the current network node is operating in the store-and-forward mode;

[0642] The first network node information includes at least one of the following: a satellite identifier, a base station identifier, and a cell identifier;

[0643] The first network node information list is determined or generated based on the second network node information list.

[0644] The processing device provided in the embodiment of the present application has similar implementation principles and beneficial effects to the technical solutions shown in the above-mentioned corresponding method embodiments, and will not be described in detail here.

[0645] Ninth embodiment

[0646] Please refer to Figure 12, which is a third structural diagram of the processing device provided in an embodiment of the present application. The device can be installed in or is the terminal device (such as a mobile phone) in the above method embodiment. As shown in Figure 12, the device 170 includes:

[0647] The receiving module 1701 is configured to receive an RRC connection release message sent by the first network node after determining or generating the first information.

[0648] Optionally, the device further comprises at least one of the following:

[0649] The first information is determined or generated based on the first network node information list;

[0650] The first network node sends a first message to the second network node;

[0651] The second network node responds to the first network node with a second message;

[0652] The first network node sends the first information to the corresponding network node;

[0653] A third message sent by the second network node is received.

[0654] Optionally, the device further comprises at least one of the following:

[0655] The first network node information list is determined or generated by the first network node;

[0656] The first message carries at least one of the following: a store-and-forward instruction, a network node information list request, and a second network node information list;

[0657] The second message carries at least one of the following: a first network node information list, a next hop, and a next hop link counter;

[0658] The third message includes a fourth network node information list;

[0659] The first information includes an access layer security information list;

[0660] The RRC connection release information carries at least one of the following: an RRC release reason, a recovery identifier, a recovery identifier list, a next hop link counter, and a third network node information list;

[0661] The corresponding network nodes include network nodes in the first network node information list and / or the third network node information list.

[0662] Optionally, the device further comprises at least one of the following:

[0663] Access layer security information includes security keys and / or next hop link counters;

[0664] The store-and-forward indication is used to indicate that the current network node is operating in the store-and-forward mode;

[0665] The first network node information includes at least one of the following: a satellite identifier, a base station identifier, and a cell identifier;

[0666] The first network node information list is determined or generated based on the second network node information list;

[0667] The third network node information list is determined or generated according to the first network node information list;

[0668] The third network node information list is the same as the first network node information list;

[0669] The third network node information includes at least one of a satellite identifier, a base station identifier, a cell identifier, a physical cell identifier, a frequency, and satellite assistance information;

[0670] Optionally, the satellite assistance information includes at least one item such as satellite ephemeris information and coverage parameters.

[0671] The first network node determines or generates first information based on the first network node information list, including at least one of the following:

[0672] The first network node determines a physical cell identifier and / or frequency of the corresponding cell according to the first network node information list;

[0673] The first network node determines or generates access layer security information according to at least one of a physical cell identifier, a frequency, a current security key, and a next hop of the cell.

[0674] Optionally, the device further comprises at least one of the following:

[0675] Save the terminal device context;

[0676] Monitor paging at the corresponding network node;

[0677] When paging or uplink data transmission is detected, an RRC connection recovery request is initiated;

[0678] Receive the RRC connection recovery message.

[0679] The processing device provided in the embodiment of the present application has similar implementation principles and beneficial effects to the technical solutions shown in the above-mentioned corresponding method embodiments, and will not be described in detail here.

[0680] Refer to Figure 13, which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. As shown in Figure 13, the communication device 180 described in this embodiment can be the terminal device (or component that can be used for a terminal device) or network device (or component that can be used for a network device) mentioned in the aforementioned method embodiment. Communication device 180 can be used to implement the methods corresponding to the terminal device or network device described in the aforementioned method embodiment. For details, please refer to the description of the aforementioned method embodiment.

[0681] The communication device 180 may include one or more processors 1801, also referred to as processing units, which may implement certain control or processing functions. Processor 1801 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, while the central processing unit may be used to control the communication device, execute software programs, and process software program data.

[0682] Optionally, the processor 1801 may also store instructions 1803 or data (eg, intermediate data). Optionally, the instructions 1803 may be executed by the processor 1801, so that the communication device 180 executes the method corresponding to the terminal device or network device described in the above method embodiment.

[0683] Optionally, the communication device 180 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments.

[0684] Optionally, the communication device 180 may include one or more memories 1802 , on which instructions 1804 may be stored. The instructions may be executed on the processor 1801 , so that the communication device 180 performs the method described in the above method embodiment.

[0685] Optionally, data may also be stored in the memory 1802. The processor 1801 and the memory 1802 may be provided separately or integrated together.

[0686] Optionally, the communication device 180 may further include a transceiver 1805 and / or an antenna 1806. The processor 1801 may be referred to as a processing unit, and controls the communication device 180 (terminal device, core network device, or wireless access network device). The transceiver 1805 may be referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver, and is used to implement the transceiver functions of the communication device 180.

[0687] Optionally, if the communication device 180 is used to implement operations corresponding to the terminal device in the above embodiments, for example, the transceiver 1805 can receive an RRC connection release message sent by the first network node after determining or generating the first information.

[0688] Optionally, the specific implementation process of the processor 1801 and the transceiver 1805 can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0689] Optionally, if the communication device 180 is used to implement operations corresponding to the network devices in the above embodiments, for example, the transceiver 1805 may send the second message.

[0690] Optionally, the specific implementation process of the processor 1801 and the transceiver 1805 can be found in the relevant descriptions of the above embodiments, and will not be repeated here.

[0691] The processor 1801 and transceiver 1805 described in this application can be implemented on an IC (Integrated Circuit), an analog integrated circuit, an RFIC (Radio Frequency Integrated Circuit), a mixed-signal integrated circuit, an ASIC (Application Specific Integrated Circuit), a PCB (Printed Circuit Board), an electronic device, etc. The processor 1801 and transceiver 1805 can also be manufactured using various integrated circuit process technologies, such as CMOS (Complementary Metal Oxide Semiconductor), NMOS (N Metal-Oxide-Semiconductor), PMOS (Positive Channel Metal Oxide Semiconductor), BJT (Bipolar Junction Transistor), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0692] In this application, a communication device may be a terminal device (such as a mobile phone) or a network device (such as a base station), and the specific definition needs to be determined based on the context. In addition, the terminal device can be implemented in various forms. For example, the terminal devices described in this application may include mobile terminals such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminal devices such as digital TVs and desktop computers.

[0693] Although the communication device is described above by taking a terminal device or a network device as an example, the scope of the communication device described in this application is not limited to the above-mentioned terminal device or network device, and the structure of the communication device may not be limited to Figure 13. The communication device may be an independent device or may be part of a larger device.

[0694] An embodiment of the present application further provides a communication system, including: a terminal device as in any of the above embodiments; and a network device as in any of the above embodiments.

[0695] An embodiment of the present application also provides a communication device, including a memory and a processor, wherein a processing program is stored in the memory, and when the processing program is executed by the processor, the steps of the processing method in any of the above embodiments are implemented.

[0696] The communication device in this application can be a terminal device (such as a mobile phone) or a network device (such as a base station). The specific reference needs to be clarified based on the context.

[0697] An embodiment of the present application further provides a computer-readable storage medium, on which a processing program is stored. When the processing program is executed by a processor, the steps of the processing method in any of the above embodiments are implemented.

[0698] In the embodiments of the communication device and storage medium provided in the embodiments of the present application, all technical features of any of the above-mentioned processing method embodiments may be included. The expanded and explained contents of the specification are basically the same as those of the embodiments of the above-mentioned methods and will not be repeated here.

[0699] An embodiment of the present application further provides a computer program product, which includes computer program code. When the computer program code runs on a computer, the computer executes the methods in the various possible implementation modes described above.

[0700] An embodiment of the present application also provides a chip, including a memory and a processor, wherein the memory is used to store computer programs, and the processor is used to call and run the computer programs from the memory, so that a device equipped with the chip executes the methods in the various possible implementation modes as described above.

[0701] It is understood that the above scenarios are merely examples and do not limit the application scenarios of the technical solutions provided in the embodiments of this application. The technical solutions of this application can also be applied to other scenarios. For example, those skilled in the art will appreciate that with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application will also be applicable to similar technical problems.

[0702] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0703] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0704] The units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0705] In this application, the same or similar terminology, technical solutions and / or application scenario descriptions are generally only described in detail the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of this application, for the same or similar terminology, technical solutions and / or application scenario descriptions that are not described in detail later, you can refer to the previous relevant detailed descriptions.

[0706] In this application, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0707] The various technical features of the technical solution of this application can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0708] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, controlled terminal device, or network device, etc.) to execute the method of each embodiment of the present application.

[0709] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a storage medium or transmitted from one storage medium to another storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a storage disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state storage disk Solid State Disk (SSD)).

[0710] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A processing method, wherein, Applied to a first network node, including the steps: S2: Determine or generate first information based on a first network node information list.

2. The method according to claim 1, wherein Further includes at least one of the following: Send a first message to a second network node; Receive a second message from the second network node.

3. The method according to claim 2, wherein, Further includes at least one of the following: The first network node information list is determined or generated by the first network node; The first message carries at least one of the following: a store-and-forward indication, a network node information list request, and a second network node information list; The second message carries at least one of the following: a first network node information list, a next hop, and a next-hop link counter; The first information includes an access stratum security information list.

4. The method according to claim 3, wherein Step S2 includes: Determine or generate access stratum security information according to at least one of the physical cell identifier of the cell, the frequency point, the current security key, and the next hop.

5. The method according to claim 4, wherein Further includes at least one of the following: The physical cell identifier and / or the frequency point are determined according to the first network node information list; Send the first information to the corresponding network node; Send an RRC connection release message to the terminal device.

6. [Corrected according to Rule 26 on 18.11.2024] The method according to claim 5, wherein Further includes at least one of the following: Send the access stratum security information to the corresponding network node; The RRC connection release information carries at least one of the following: an RRC release cause, a resume identifier, a resume identifier list, a next-hop link counter, and a third network node information list.

7. The method according to claim 6, wherein, Further includes at least one of the following: The access stratum security information includes a security key and / or a next-hop link counter; The store-and-forward indication is used to indicate that the current network node operates in the store-and-forward mode; The first network node information includes at least one of the following: a satellite identifier, a base station identifier, and a cell identifier; The first network node information list is determined or generated based on the second network node information list; The third network node information list is determined or generated according to the first network node information list; The third network node information list is the same as the first network node information list; The third network node information includes at least one of a satellite identifier, a base station identifier, a cell identifier, a physical cell identifier, a frequency point, and satellite assistance information; The corresponding network node includes the network nodes in the first network node information list and / or the third network node information list.

8. A processing method, wherein, Applied to a second network node, including the steps: S1: Send a second message to cause the first network node to determine or generate first information based on the first network node information list.

9. The method according to claim 8, wherein Further includes at least one of the following: Send a third message to the terminal device; Receive a first message from the first network node; Receive the first information from the first network node.

10. The method according to claim 9, wherein, Further includes at least one of the following: The first message carries at least one of the following: a store-and-forward indication, a network node information list request, and a second network node information list; The second message carries at least one of the following: a first network node information list, a next hop, and a next-hop link counter; The third message includes a fourth network node information list; The first information includes an access stratum security information list.

11. The method according to claim 10, wherein, The first network node determines or generates first information based on the first network node information list, including: The first network node determines or generates access stratum security information according to at least one of the physical cell identifier of the cell, the frequency point, the current security key, and the next hop.

12. The method according to claim 10, wherein Further includes at least one of the following: The access stratum security information includes a security key and / or a next-hop link counter; The store-and-forward indication is used to indicate that the current network node operates in the store-and-forward mode; The first network node information includes at least one of the following: satellite identifier, base station identifier, and cell identifier; The first network node information list is determined or generated based on the second network node information list.

13. A processing method, wherein, When applied to a terminal device, it includes the steps of: S3: Receive an RRC connection release message sent by the first network node after determining or generating the first information.

14. The method according to claim 13, wherein, It further includes at least one of the following: The first information is determined or generated based on the first network node information list; The first network node sends a first message to the second network node; The second network node responds to the first network node with a second message; The first network node sends the first information to the corresponding network node; Receive a third message sent by the second network node.

15. The method according to claim 14, wherein, It further includes at least one of the following: The first network node information list is determined or generated by the first network node; The first message carries at least one of the following: store-and-forward indication, network node information list request, and second network node information list; The second message carries at least one of the following: first network node information list, next-hop, next-hop link counter; The third message includes a fourth network node information list; The first information includes an access stratum security information list; The RRC connection release information carries at least one of the following: RRC release cause, resume identifier, resume identifier list, next-hop link counter, and third network node information list; The corresponding network node includes the network nodes in the first network node information list and / or the third network node information list.

16. The method according to claim 15, wherein, It further includes at least one of the following: The access stratum security information includes a security key and / or a next-hop link counter; The store-and-forward indication is used to indicate that the current network node operates in the store-and-forward mode; The first network node information includes at least one of the following: satellite identifier, base station identifier, and cell identifier; The first network node information list is determined or generated based on the second network node information list; The third network node information list is determined or generated according to the first network node information list; The third network node information list is the same as the first network node information list; The third network node information includes at least one of satellite identifier, base station identifier, cell identifier, physical cell identifier, frequency point, and satellite assistance information; The first network node determines or generates the first information based on the first network node information list, including at least one of the following: The first network node determines the physical cell identifier and / or frequency point of the corresponding cell according to the first network node information list; The first network node determines or generates access stratum security information according to at least one of the physical cell identifier, frequency point, current security key, and next-hop of the cell.

17. The method according to claim 14, wherein It further includes at least one of the following: Save the terminal device context; Monitor paging at the corresponding network node; When paging is monitored or there is uplink data transmission, initiate an RRC connection resume request; Receive an RRC connection resume message.

18. A communication device, wherein, It includes: A memory and a processor, where a processing program is stored on the memory, and the processing program is executed by the processor to implement the processing method as described in claim 1, 8, or 13.

19. A computer-readable storage medium, wherein, A processing program is stored on the computer-readable storage medium, and the processing program is executed by a processor to implement the processing method described in claims 1, 8, or 13.

Images