Method, device, terminal and access network element for coordinated access of multi-orbit satellite networks

Abstract

The application provides a method, device, terminal and access network element for multi-orbit satellite network cooperative access. The method is applied to a terminal camping on a first network, and comprises the following steps: receiving first information from a first access network element of the first network, the first information being used to instruct the terminal to access a second network, an orbit height of a second access network element of the second network being different from an orbit height of the first access network element of the first network; and establishing a connection with the second access network element. The application can reduce mobility management and ensure service quality.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a method, apparatus, terminal and access network element for collaborative access to a multi-track satellite network. Background Technology

[0002] Satellites can provide services to terminals. The satellite orbit affects the coverage of satellite access, which in turn affects the terminal's mobility management and service quality. For example, low-Earth orbit (LEO) satellites can provide terminals with low-latency and high-data-rate services, but their coverage is limited. When a terminal accesses a LEO satellite, it frequently performs cell reselection in idle states. On the other hand, high-Earth orbit (HEO) satellites have a larger coverage area, and terminals do not need to perform cell reselection frequently in idle states, but their latency is higher and their transmission rate is relatively lower. Summary of the Invention

[0003] This application provides a method, apparatus, terminal, and access network element for collaborative access to multi-track satellite networks, which improves service quality and reduces mobility management.

[0004] In a first aspect, a method for collaborative access to a multi-orbit satellite network is proposed, applied to a terminal, wherein the terminal is stationed in a first network. The method includes: receiving first information from a first access network element of the first network, wherein the first information is used to instruct the terminal to access a second network, wherein the orbital altitude of a second access network element of the second network is different from the orbital altitude of the first access network element of the first network; and establishing a connection with the second access network element.

[0005] In one possible implementation, the first information includes a first parameter, the value of which is a first preset value.

[0006] In one possible implementation, the method further includes:

[0007] The network identification information is received from the first access network element, and the network identification information is used to identify the second network.

[0008] In one possible implementation, before receiving the first information from the first access network element of the first network, the method further includes:

[0009] Receive the first paging message from the first access network element;

[0010] Send a Radio Resource Control (RRC) Connection Establishment Request message to the first access network element.

[0011] In one possible implementation, receiving the first information from the first access network element of the first network includes:

[0012] Receive a first message, the first message including the first information, the first message being one of the following: a paging message, an RRC reconfiguration message, an RRC connection establishment message, or an RRC connection establishment rejection message.

[0013] In one possible implementation, the method further includes:

[0014] Receive second information from the first access network element, the second information being used to instruct the terminal to access the first network;

[0015] Establish a connection with the first access network element of the first network.

[0016] In one possible implementation, prior to receiving the second information from the first access network element, the method further includes:

[0017] Receive the first paging message from the first access network element;

[0018] Send a connection establishment request message to the first access network element.

[0019] In one possible implementation, the second information includes a first parameter and the value of the first parameter is a second preset value, or the second information does not include the first parameter.

[0020] In one possible implementation, receiving the second information from the first access network element includes:

[0021] Receive a second message from the first access network element. The second message includes the second information. The second message is one of the following: a paging message, an RRC reconfiguration message, an RRC connection establishment message, or an RRC connection establishment rejection message.

[0022] Secondly, a method for collaborative access to a multi-track satellite network is proposed, applied to a first access network element. The method includes:

[0023] A first message is sent to a terminal, which is camped on a first network, the first network including the first access network element. The first message is used to instruct the terminal to access a second network, the orbital height of the second access network element of the second network being different from the orbital height of the first access network element of the first network.

[0024] In one possible implementation, the first information includes a first parameter, the value of which is a first preset value.

[0025] In one possible implementation, the method further includes:

[0026] The network identification information is sent to the terminal, and the network identification information is used to identify the second network.

[0027] In one possible implementation, before sending the first information to the terminal, the method further includes:

[0028] Send a first paging message to the terminal;

[0029] Receive a Radio Resource Control (RRC) connection establishment request message from the terminal.

[0030] In one possible implementation, sending the first information to the terminal includes:

[0031] Send a first message to the terminal. The first message includes the first information. The first message may be one of the following: a paging message, an RRC reconfiguration message, an RRC connection establishment message, or an RRC connection establishment rejection message.

[0032] In one possible implementation, the method further includes:

[0033] Send a second message to the terminal, the second message being used to instruct the terminal to access the first network.

[0034] In one possible implementation, before sending the second message to the terminal, the method further includes:

[0035] Send a first paging message to the terminal;

[0036] Receive an RRC connection establishment request message from the terminal.

[0037] In one possible implementation, the second information includes a first parameter and the value of the first parameter is a second preset value, or the second information does not include the first parameter.

[0038] In one possible implementation, sending the second information to the terminal includes:

[0039] Send a second message to the terminal. The second message includes the second information. The second message is one of the following: a paging message, an RRC reconfiguration message, an RRC connection establishment message, or an RRC connection establishment rejection message.

[0040] In one possible implementation, before sending the first information to the terminal, the method further includes:

[0041] Receive a second paging message sent from a mobility management network element, the second paging message including the first information.

[0042] In one possible implementation, the second paging message further includes network identification information used to identify the second network.

[0043] Thirdly, a method for collaborative access to multi-track satellite networks is proposed and applied to mobility management network elements. The method includes:

[0044] Send first information to the first access network element of the first network. The first information is used to instruct the terminal stationed in the first network to access the second network. The orbital height of the second access network element of the second network is different from the orbital height of the first access network element of the first network.

[0045] In one possible implementation, the method further includes:

[0046] The terminal receives a first network element transmission message from a session management function network element. The first network element transmission message is used to indicate that the terminal has downlink services and to obtain the terminal's subscription data.

[0047] The second paging message is sent to the first access network element based on the terminal's subscription data. The second paging message includes the first information.

[0048] In one possible implementation, sending the second paging message to the first access network element based on the terminal's subscription data includes:

[0049] When the signed-up data includes first capability information and second capability information, a second paging message is sent to the first access network element. The first capability information is used to indicate that the terminal supports multi-track access capability, and the second capability information is used to indicate that the mobility management network element has multi-track access enabled.

[0050] In one possible implementation, sending the second paging message to the first access network element based on the terminal's subscription data includes:

[0051] When the subscription data includes first capability information and second capability information, and the subscription data is used to indicate that the terminal's Quality of Service Level Identifier (QCI) is a preset character, a second paging message is sent to the terminal. The first capability information is used to indicate that the terminal supports multi-track access capability, and the second capability information is used to indicate that the mobility management network element has multi-track access enabled.

[0052] In one possible implementation, the first capability information includes a second parameter, the value of which is a third preset value.

[0053] In one possible implementation, the first information includes a first parameter, the value of which is a first preset value.

[0054] In one possible implementation, the method further includes:

[0055] Send a second message to the first access network element, the second message being used to instruct the terminal to access the first network.

[0056] In one possible implementation, before sending the second information to the first access network element, the method further includes:

[0057] The terminal receives a first network element transmission message from a session management function network element. The first network element transmission message is used to indicate that the terminal has downlink services and to obtain the terminal's subscription data.

[0058] The second paging message is sent to the first access network element based on the terminal's subscription data. The second paging message includes second information.

[0059] In one possible implementation, sending the second paging message to the first access network element based on the terminal's subscription data includes:

[0060] If the signed data includes third capability information and / or fourth capability information, a second paging message is sent to the first access network element. The third capability information is used to indicate that the terminal does not support multi-track access capability, and the fourth capability information is used to indicate that the mobility management network element does not have multi-track access enabled.

[0061] In one possible implementation, the third capability information includes a second parameter, the value of which is a fourth preset value, or the third capability information does not include the second parameter.

[0062] In one possible implementation, the second information includes a first parameter and the value of the first parameter is a second preset value, or the second information does not include the first parameter.

[0063] In one possible implementation, the method further includes: receiving first capability information from the first access network element, the first capability information being used to indicate that the terminal supports multi-track access capability.

[0064] In one possible implementation, the method further includes: receiving third capability information from the first access network element, the third capability information being used to indicate that the terminal does not support multi-track access capability.

[0065] In one possible implementation, the method further includes:

[0066] The terminal receives a first network element transmission message from a session management function network element. The first network element transmission message is used to indicate that the terminal has downlink services and to obtain the terminal's subscription data.

[0067] Send a policy control request message to the policy control function network element;

[0068] The system receives a policy control response message from the policy control function network element, the policy control response message including the first information.

[0069] In one possible implementation, the method further includes:

[0070] The terminal receives a first network element transmission message from a session management function network element. The first network element transmission message includes the first information and is used to indicate that the terminal has downlink service.

[0071] In one possible implementation, the method further includes:

[0072] Send network identification information to the first access network element, wherein the network identification information is used to identify the second network.

[0073] Fourthly, a method for collaborative access to multi-track satellite networks is proposed and applied to policy control function network elements. The method includes:

[0074] Send first information to the mobility management network element, the first information being used to instruct a terminal stationed in the first network to access the second network, wherein the orbital altitude of the second access network element in the second network is different from the orbital altitude of the first access network element in the first network.

[0075] In one possible implementation, the first information includes a first parameter, the value of which is a first preset value.

[0076] In one possible implementation, the method further includes:

[0077] Receive policy control request messages from the mobility management network element;

[0078] A policy control response message is sent to the mobility management network element, the policy control response message including the first information.

[0079] In one possible implementation, the method further includes:

[0080] Send a second message to the mobility management network element, the second message being used to instruct the terminal to access the first network.

[0081] In one possible implementation, the second information includes a first parameter and the value of the first parameter is a second preset value, or the second information does not include the first parameter.

[0082] Fifthly, a method for collaborative access to multi-track satellite networks is proposed, applied to a session management function network element. The method includes:

[0083] Send first information to the mobility management network element, the first information being used to instruct a terminal stationed in the first network to access the second network, wherein the orbital altitude of the second access network element in the second network is different from the orbital altitude of the first access network element in the first network.

[0084] In one possible implementation, the method further includes:

[0085] A first network element transmission message is sent to the mobility management network element. The first network element transmission message is used to indicate that the terminal has downlink service. The first network element transmission message includes the first information.

[0086] In one possible implementation, before sending the first information to the mobility management network element, the method further includes:

[0087] Receive downlink messages; the downlink messages include the terminal's Quality of Service Level Identifier (QCI);

[0088] If the QCI is a preset character, the first information is sent to the mobility management network element.

[0089] In one possible implementation, the first information includes a first parameter, the value of which is a first preset value.

[0090] In one possible implementation, the method further includes:

[0091] Send a second message to the mobility management network element, the second message being used to instruct the terminal to access the first network.

[0092] In one possible implementation, the second information includes a first parameter and the value of the first parameter is a second preset value, or the second information does not include the first field.

[0093] Sixthly, a device for collaborative access to a multi-track satellite network is proposed, applied to a terminal, the terminal being hosted in a first network, the device comprising:

[0094] A receiving module is configured to receive first information from the first access network element, the first information being used to instruct the terminal to access a second network, wherein the orbital height of the second access network element of the second network is different from the orbital height of the first access network element of the first network;

[0095] The processing module is used to establish a connection with the second access network element.

[0096] Seventhly, a device for collaborative access to a multi-track satellite network is proposed, applied to a first access network element, the device comprising:

[0097] A sending module is used to send first information to a terminal, the terminal being hosted in a first network, the first network including a first access network element, the first information being used to instruct the terminal to access a second network, the orbital height of the second access network element of the second network being different from the orbital height of the first access network element of the first network.

[0098] Eighthly, a device for collaborative access to a multi-track satellite network is proposed, applied to a mobility management network element, the device comprising:

[0099] The sending module is used to send first information to the first access network element of the first network. The first information is used to instruct a terminal stationed in the first network to access the second network. The orbital height of the second access network element of the second network is different from the orbital height of the first access network element of the first network.

[0100] Ninthly, a device for collaborative access to a multi-track satellite network is proposed, applied to a policy control function network element, the device comprising:

[0101] The sending module is used to send first information to the mobility management network element. The first information is used to instruct a terminal stationed in the first network to access the second network. The orbital altitude of the second access network element in the second network is different from the orbital altitude of the first access network element in the first network.

[0102] Tenthly, a device for collaborative access to a multi-track satellite network is proposed, applied to a session management function network element, the device comprising:

[0103] The sending module is used to send first information to the mobility management network element. The first information is used to instruct a terminal stationed in the first network to access the second network. The orbital altitude of the second access network element in the second network is different from the orbital altitude of the first access network element in the first network.

[0104] Eleventhly, a terminal is proposed, comprising: a processor, and a memory communicatively connected to the processor;

[0105] The memory stores computer-executed instructions;

[0106] The processor executes computer execution instructions stored in the memory to implement the method as described in the first aspect.

[0107] In a twelfth aspect, an access network element is proposed, comprising: a processor, and a memory communicatively connected to the processor;

[0108] The memory stores computer-executed instructions;

[0109] The processor executes computer execution instructions stored in the memory to implement the method as described in the second aspect.

[0110] In a thirteenth aspect, a mobility management network element is proposed, comprising: a processor, and a memory communicatively connected to the processor;

[0111] The memory stores computer-executed instructions;

[0112] The processor executes computer execution instructions stored in the memory to implement the method as described in any of the third aspects.

[0113] In the fourteenth aspect, a policy control function network element is proposed, including: a processor, and a memory communicatively connected to the processor;

[0114] The memory stores computer-executed instructions;

[0115] The processor executes computer execution instructions stored in the memory to implement the method as described in the fourth aspect.

[0116] In the fifteenth aspect, a session management function network element is proposed, comprising: a processor, and a memory communicatively connected to the processor;

[0117] The memory stores computer-executed instructions;

[0118] The processor executes computer execution instructions stored in the memory to implement the method as described in the fifth aspect.

[0119] In the sixteenth aspect, a communication system is proposed, comprising a terminal, a first access network element, and network elements of the core network; wherein,

[0120] The terminal is used to implement the method as described in any of the first aspects;

[0121] The first access network element is used to implement the method as described in any one of the second aspects;

[0122] The network elements of the core network are used to implement the method described in any one of the third to fifth aspects.

[0123] In a seventeenth aspect, a computer-readable storage medium is provided, wherein computer-executable instructions are stored therein, which, when executed by a processor, are used to implement the method as described in any one of claims 1-47.

[0124] Eighteenth aspect, a computer program product is proposed, comprising a computer program that, when executed by a processor, implements the method described in any one of the first to fifth aspects.

[0125] The method, apparatus, terminal, and access network element for multi-track satellite network collaborative access provided in this application allow the terminal to reside in the first network when idle, reducing mobility management. When the terminal is in the process of receiving a call, it can send first information through the first access network element of the first network to instruct the terminal to access other access network elements of other networks. Thus, the terminal can access other access network elements according to the first information to provide service, thereby ensuring the quality of service for the terminal's services. Attached Figure Description

[0126] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0127] Figure 1 This is a structural diagram of a communication system shown in one embodiment of this application;

[0128] Figure 2 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to an embodiment of this application;

[0129] Figure 3 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to another embodiment of this application;

[0130] Figure 4 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to another embodiment of this application;

[0131] Figure 5 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to another embodiment of this application;

[0132] Figure 6 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to another embodiment of this application;

[0133] Figure 7 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to another embodiment of this application;

[0134] Figure 8 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to another embodiment of this application;

[0135] Figure 9 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to another embodiment of this application;

[0136] Figure 10 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to another embodiment of this application;

[0137] Figure 11This is a schematic block diagram of a device for cooperative access to a multi-track satellite network, as shown in one embodiment of this application.

[0138] Figure 12 This is a schematic block diagram of a device for cooperative access to a multi-track satellite network, as shown in another embodiment of this application;

[0139] Figure 13 This is a schematic block diagram of a device for cooperative access to a multi-track satellite network, as shown in another embodiment of this application;

[0140] Figure 14 This is a schematic block diagram of a device for cooperative access to a multi-track satellite network, as shown in another embodiment of this application;

[0141] Figure 15 This is a schematic block diagram of a device for cooperative access to a multi-track satellite network, as shown in another embodiment of this application;

[0142] Figure 16 This is a schematic block diagram of a communication device shown in one embodiment of this application.

[0143] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0144] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0145] In scenarios where terminals directly connect to satellites, low-Earth orbit (LEO) satellites typically provide direct connection services due to their low latency and high data transmission rates. LEO satellites, located hundreds of kilometers above the Earth's surface, are in motion relative to the Earth's surface. A single LEO satellite typically provides service to a mobile phone for 10-20 minutes. When one satellite moves out of the current service area and the next moves in, the idle terminal needs to perform cell reselection to ensure terminal reachability and connectivity when initiating services.

[0146] In scenarios where terminals connect to network devices, terminals in idle states need to frequently perform cell reselection, which means that terminals need to frequently perform wireless measurements, especially in scenarios where terminals access satellites. Both measurement and reselection behaviors will cause the terminal to consume a lot of power and reduce the terminal's battery life.

[0147] Taking satellites as an example, the different orbits of satellites affect the coverage of satellite access, as well as the mobility management of terminals and the quality of service. For example, in terms of coverage, the coverage of high-orbit satellites, medium-orbit satellites, and low-orbit satellites decreases in that order, and the larger the coverage of a satellite, the fewer mobility management processes are required for the terminal. However, in terms of the quality of service such as latency and transmission rate, the opposite is true for high-orbit satellites, medium-orbit satellites, and low-orbit satellites, which increase in that order.

[0148] Based on this, embodiments of this application propose a method, apparatus, terminal, and access network element for multi-track satellite network collaborative access, reducing mobility management and ensuring service quality.

[0149] The technical solutions of this application embodiment can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, future 5th Generation (5G) communication systems or new radio access technology (NR), vehicle-to-other devices (V2X), where V2X can include vehicle-to-network (V2N), vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), etc., Long Term Evolution-Vehicle (LTE-V) communication, vehicle-to-everything (V2X) communication, and machine-type communication. Communication technologies such as MTC (Mechanical, Communication and Communication Technology), Internet of Things (IoT), Long Term Evolution-Machine (LTE-M), and Machine to Machine (M2M) are mentioned.

[0150] To facilitate understanding of the embodiments of this application, firstly, in conjunction with Figure 1 This application describes in detail the communication system applicable to the embodiments of this application. For example... Figure 1 As shown, the communication system 100 may include at least one network, for example Figure 1 The network 110 shown may include access network elements and core network elements. For example, access network elements may include... Figure 1 The access network element 111 shown is an example of a core network element. Figure 1 The core network element 112; the communication system 100 may also include at least one terminal, for example Figure 1The terminal 120 shown can be mobile or fixed. The access network element 111 is a device that can communicate with the terminal 120 via a wireless link, such as a base station or base station controller. Each access network element can provide communication coverage for a specific geographical area and can communicate with terminals located within that coverage area (cell).

[0151] The network elements of the core network are functional network elements in the core network, such as policy control function network elements, which correspond to the policy control function (PCF) network elements in the 5G core network, and mobility management network elements, which correspond to the access and mobility management function (AMF) network elements in the 5G core network, etc. There are no specific restrictions here. It can be understood that the network elements of the core network can also be network elements with corresponding functions in the 4G (fourth generation mobile communication technology) core network, or network elements with corresponding functions in the 6G (sixth generation mobile communication technology) core network. There are no specific restrictions here either.

[0152] In this embodiment of the application, the access network element 111 is a network device, which may include non-terrestrial network devices, such as satellites. The satellite can be regarded as a mobile network device, and no specific limitation is made here.

[0153] In this disclosure, the access network element 111 is a network-side entity used for transmitting or receiving signals, and the network device can be a network-side device. For example, the access network element 111 can be an evolved NodeB (eNB), a transmission reception point (TRP), a next-generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. This disclosure does not limit the specific technology or device form used in the network device.

[0154] The access network element 111 provided in this embodiment can be composed of a central unit (CU) and a distributed unit (DU). The CU can also be called a control unit. By adopting the CU-DU structure, the protocol layer of network devices, such as base stations, can be separated. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU, which is centrally controlled by the CU.

[0155] In this embodiment, terminal 120 is a user-side entity used to receive or transmit signals, such as a mobile phone. A terminal can also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), user-side equipment, etc. Terminals can be communication-enabled vehicles, smart cars, mobile phones, wearable devices, tablets, computers with wireless transceiver capabilities, virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.

[0156] In some embodiments, terminal 120 supports non-terrestrial network (NTN) connectivity.

[0157] In some embodiments, terminal 120 is stationed in network 110 and is in an idle state.

[0158] In other embodiments, terminal 120 can access access network element 111 to perform service transmission.

[0159] Understandable. Figure 1 The present invention illustrates the structure of a network system. The embodiments of this disclosure do not limit the specific technologies and equipment forms used in the terminals / access network elements.

[0160] It is understood that the communication system described in the embodiments of this disclosure is for the purpose of more clearly illustrating the technical solutions of the embodiments of this disclosure, and does not constitute a limitation on the technical solutions provided in the embodiments of this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this disclosure are also applicable to similar technical problems.

[0161] To facilitate understanding of the embodiments of this application, the terms involved in this application will be briefly explained first.

[0162] Cell: A cell is described from the perspective of resource management, mobility management, or service unit by higher layers. The coverage area of ​​each network device can be divided into one or more cells, and each cell can correspond to one or more frequency points. In other words, each cell can be regarded as an area formed by the coverage of one or more frequency points.

[0163] RRC (Radio Resource Control) connection: Before normal communication, a terminal device can establish an RRC connection with network devices, or in other words, with the cell. When the RRC connection is broken, the terminal device cannot communicate normally.

[0164] It is understood that in the embodiments of this application, "for indicating" can include both direct and indirect indication, as well as explicit and implicit indication. The information indicated by a certain piece of information is called the information to be indicated. In the specific implementation process, there are many ways to indicate the information to be indicated, such as, but not limited to, directly indicating the information to be indicated, such as the information to be indicated itself or its index. It can also indirectly indicate the information to be indicated by indicating other information, where there is a correlation between the other information and the information to be indicated. It can also indicate only a part of the information to be indicated, while the other parts are known or pre-agreed upon. For example, the indication of the information to be indicated can be achieved by pre-agreed upon (e.g., by a protocol specifying) the existence of a certain information element, thereby reducing the indication overhead to some extent.

[0165] It is understood that in the embodiments shown below, the terms "first," "second," and various numerical designations are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. For example, they may be used to distinguish different indication information, different time intervals, etc.

[0166] Understandably, "preset values" can be implemented by pre-storing corresponding codes, tables, or other means of indicating relevant information in a device (e.g., including terminal devices and network devices), and this application does not limit the specific implementation method. "Storing" can refer to storing in one or more memories. These memories can be separate installations or integrated into an encoder or decoder, processor, or communication device. Alternatively, some memories can be separate installations, while others are integrated into the decoder, processor, or communication device. The type of memory can be any form of storage medium, and this application does not limit this.

[0167] It is understood that the “protocol” involved in the embodiments of this application may refer to standard protocols in the field of communication, such as LTE protocol, NR protocol and related protocols applied to future communication systems, and this application does not limit it.

[0168] Understandably, "at least one" refers to one or more, while "more" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can mean: a, or, b, or, c, or, a and b, or, a and c, or, b and c, or, a, b, and c. Here, a, b, and c can be single or multiple.

[0169] It is understood that in the embodiments of this application, descriptions such as "when," "under the circumstances," "if," and "if" all refer to the fact that the device (e.g., a terminal device or a network device) will make corresponding processing under certain objective circumstances. They are not time limits, nor do they require the device (e.g., a terminal device or a network device) to make a judgment action when implementing it, nor do they imply any other limitations.

[0170] It is understood that, for the sake of clarity in illustrating the embodiments of this application, unless otherwise specified, all message names mentioned herein refer to message names in NR (New Message List). However, it is understood that these message names are merely illustrative examples for ease of understanding and should not constitute any limitation on this application. This application does not preclude the possibility of defining other message names in future protocols to replace the message names listed in this application to achieve the same or similar functions. Furthermore, using message names in NR as examples to illustrate the embodiments of this application should not constitute any limitation on the scenarios to which the methods provided in this application are applicable. For example, "RRC connection recovery" in the following embodiments can be replaced with "RRC re-establishment," "RRC connection re-establishment," etc. For the sake of brevity, they are not listed here.

[0171] It is understood that several embodiments are described in detail below with reference to multiple flowcharts. However, it should be understood that these flowcharts and their corresponding descriptions are illustrative only for ease of understanding and should not constitute any limitation on this application. Not every step in each flowchart is necessarily required to be performed; for example, some steps can be skipped. Furthermore, the execution order of each step is not fixed and is not limited to what is shown in the figures. The execution order of each step should be determined by its function and internal logic.

[0172] The methods provided in the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0173] It should be understood that the following description is for ease of understanding and explanation only, using the interaction between a terminal device and a network device as an example to illustrate the methods provided in the embodiments of this application. However, this should not constitute any limitation on the subject executing the methods provided in this application. For example, the terminal device shown in the embodiments below can be replaced by components (such as chips or circuits) configured in the terminal device. The network device shown in the embodiments below can also be replaced by components (such as chips or circuits) configured in the network device.

[0174] The embodiments shown below do not specifically limit the structure of the execution subject of the method provided in the embodiments of this application. As long as it is possible to communicate according to the method provided in the embodiments of this application by running a program that records the code of the method provided in the embodiments of this application, for example, the execution subject of the method provided in the embodiments of this application can be a terminal device or a network device, or a functional module in a terminal device or network device that can call and execute a program.

[0175] Figure 2 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to an embodiment of this application; as follows: Figure 2 As shown, it may include steps S210 to S220. The following is a detailed description. Figure 2 Each step in the process.

[0176] S210, The terminal receives the first information from the first access network element of the first network.

[0177] In some embodiments, the terminal is stationed in a first network, which includes one or more first access network elements.

[0178] In some embodiments, an idle terminal is camped in the first network, and when downlink data arrives at the terminal, the terminal can receive first information sent by the first access network element.

[0179] In some embodiments, the first information is used to instruct the terminal to access the second network.

[0180] In some embodiments, the second network includes one or more second access network elements, which are different from the first access network element.

[0181] In some embodiments, the orbital height of the second access network element is different from the orbital height of the first access network element of the first network.

[0182] The track height of the second access network element may be lower than that of the first access network element, or the track height of the second access network element may be higher than that of the first access network element.

[0183] In some embodiments, access network elements located at different orbital altitudes have different coverage areas.

[0184] In some embodiments, the orbital altitude of the first access network element is higher than that of the second access network element, and the coverage area of ​​the first access network element is greater than that of the second access network element. However, the performance parameters of the second access network element in terms of service quality, such as latency and transmission rate, are greater than those of the first access network element. The first access network element sends first information to the terminal, instructing the terminal to access the network corresponding to the second access network element, which facilitates the improvement of the terminal's service quality.

[0185] In some embodiments, the first network and the second network are part of a multi-track satellite network fusion network system.

[0186] In some embodiments, the first information includes a first parameter, the value of which is a first preset value.

[0187] In one embodiment, the first parameter can be defined as LEOPreferred. This first parameter is used to indicate whether to access the second network. The first parameter can be set with a corresponding value. When the value of the first parameter is a first preset value, it is used to indicate that the terminal accesses the second network.

[0188] In some embodiments, the first preset value can be set as needed, and it can be a string, a number, or other value; no specific restrictions are imposed here.

[0189] In some embodiments, the first preset value is: true.

[0190] In some embodiments, the terminal may also receive network identification information sent by the first access network element, the network identification information being used to identify the second network.

[0191] The terminal receives network identification information and can determine the corresponding second network based on this network identification information.

[0192] In some embodiments, the first information and the network identification information can be carried in the same message sent to the terminal by the first access network element, or they can be carried in different messages sent to the terminal by the first access network element; no specific limitations are imposed here.

[0193] Through this network identification information, the terminal can access network elements of other networks besides the first network.

[0194] The first access network element sends network identification information to the terminal, and can specify the access network element corresponding to the network identification information to which the terminal accesses.

[0195] In some embodiments, when the terminal has downlink service data, the first access network element sends first information to the terminal.

[0196] S220, The terminal establishes a connection with the second access network element.

[0197] In some embodiments, after receiving the second information, the terminal can establish a connection with the second access network element corresponding to the second network.

[0198] In some embodiments, the terminal establishes a connection with the second access network element, and the terminal implements services by interacting with the second access network element.

[0199] In some embodiments, after receiving the first information, the idle terminal accesses the second access network element and transmits data with the second access network element.

[0200] In this embodiment, when the terminal is idle, it camps on the first network, thereby reducing mobility management. When the terminal is in the process of receiving a call, it can access other access network elements of other networks according to the first information sent by the first network, thereby providing services to the terminal through other access network elements and ensuring the service quality of the terminal services.

[0201] Taking the example that the orbital height of the first access network element is greater than that of the second access network element, the terminal can camp on the first access network element with a large coverage area when idle to reduce mobility management, and access the second access network element according to the first information. The second access network element, which can provide better service quality such as latency and transmission rate, provides services to the terminal to ensure the service quality of the service.

[0202] In some embodiments, the first access network element may send a first paging message to the terminal to inform the terminal that downlink data exists, and then send the first information to the terminal. The following is a further explanation.

[0203] Figure 3 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to another embodiment of this application; as shown below. Figure 3 As shown, it may include steps S310 to S320. The following is a detailed description. Figure 3 Each step in the process.

[0204] S310, The terminal receives the first paging message from the first access network element.

[0205] In some embodiments, when downlink data exists in the terminal, the first access network element sends a first paging message to the terminal to inform the terminal that there is a service.

[0206] S320: The terminal sends a Radio Resource Control (RRC) connection establishment request message to the first access network element.

[0207] In some embodiments, the terminal receives a first paging message and sends an RRC connection establishment request message to the first access network element.

[0208] In some embodiments, the terminal receives a first paging message and is camped on the first network, thereby enabling the terminal to directly send an RRC connection establishment request message to the first access network element.

[0209] In some embodiments, when the first access network element receives an RRC connection establishment request message, it may send a first message to the terminal.

[0210] In some embodiments, the first message includes first information.

[0211] In some embodiments, the first message includes network identification information.

[0212] In some embodiments, the first message is at least one of the following: a paging message, an RRC reconfiguration message, an RRC connection establishment message, or an RRC connection establishment rejection message.

[0213] In some embodiments, the terminal receives a first message and first information in the first message, and establishes a connection with the second access network element.

[0214] In some embodiments, the terminal receives a first message, and receives first information and network identification information in the first message, determines a second network based on the network identification information, and establishes a connection with a second access network element of the second network.

[0215] In some embodiments, the first access network element sends a first paging message to the terminal. The first paging message may include first information, thereby enabling the terminal to directly access the second access network element.

[0216] In some embodiments, when a terminal receives an RRC connection establishment message, which includes first information, the terminal accesses a second network.

[0217] In some embodiments, when a terminal receives an RRC connection establishment rejection message, which includes first information, the terminal performs cell reselection and sends an RRC connection establishment request message to a second access network element to access the second network.

[0218] In some embodiments, the terminal receives an RRC reconfiguration message, which includes first information, and the terminal switches to the second access network element.

[0219] In this embodiment of the application, when the terminal has downlink services, the first access network element sends a first paging message to the terminal. The terminal sends an RRC connection establishment request information according to the first paging message. The first access network element responds with a first message according to the RRC connection establishment request information. The first message carries the first information and instructs the terminal to access the second access network element of the second network.

[0220] Figure 4 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to another embodiment of this application; as shown below. Figure 4 As shown, it may include steps S410 to S420. The following is a detailed description. Figure 4 Each step in the process.

[0221] S410, The terminal receives the second information from the first access network element.

[0222] In some embodiments, the second information is used to instruct the terminal to access the first network.

[0223] In some embodiments, the first access network element sends second information to the terminal.

[0224] In some embodiments, the second information includes the first parameter and the value of the first parameter is a second preset value, or the second information does not include the first parameter.

[0225] In some embodiments, the second preset value is different from the first preset value. When the value of the first parameter is the second preset value, the corresponding information is the second information. When the value of the first parameter is the first preset value, the corresponding information is the first information.

[0226] In some embodiments, the second preset value is: false.

[0227] In some embodiments, the first access network element sends a first paging message to the terminal. Upon receiving the first paging message, the terminal sends an RRC connection establishment request message to the first access network element. After receiving the RRC connection establishment request message, the first access network element sends second information to the terminal.

[0228] In some embodiments, the first access network element sends a first paging message to the terminal. Upon receiving the first paging message, the terminal sends an RRC connection establishment request message to the first access network element. After receiving the RRC connection establishment request message, the first access network element sends a second message to the terminal, the second message including second information.

[0229] In some embodiments, the second message is at least one of the following: a paging message, an RRC reconfiguration message, an RRC connection establishment message, or an RRC connection establishment rejection message.

[0230] In some embodiments, when a terminal receives an RRC connection establishment message, which includes second information, the terminal sends an RRC connection completion message to the first access network element, and the terminal establishes a connection with the first access network element.

[0231] In some embodiments, when a terminal receives an RRC connection establishment rejection message, which includes second information, the terminal continues to send an RRC connection establishment request message to the first access network element to access the first network.

[0232] In some embodiments, when a terminal receives an RRC reconfiguration message that includes second information, the terminal then accesses other cells in the first network.

[0233] The implementation method of the interaction between the first access network element and the terminal of the first paging message and the RRC connection establishment request message can be referred to the relevant embodiments of steps S310 and S320, which will not be repeated here.

[0234] S420: The terminal establishes a connection with the first access network element of the first network.

[0235] In some embodiments, the terminal receives the second information, establishes a connection with the first access network element, and transmits data through the first access network element.

[0236] In some embodiments, the first access network element sends a first paging message to the terminal. The first paging message may include second information, thereby enabling the terminal to access the first access network element.

[0237] In this embodiment of the application, when the terminal has downlink services, the first access network element can send second information, and the terminal in the idle state can access the first network first access network element where the terminal is stationed, thereby transmitting data through the first access network element.

[0238] In some embodiments, the first information is sent by a mobility management network element of a first network, and the first access network element receives the first information sent by the mobility management network element and sends the first information to the terminal.

[0239] Figure 5 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to another embodiment of this application; as shown below. Figure 5 As shown, it may include step S510. The following is a detailed description. Figure 5 Each step in the process.

[0240] S510, the first access network element receives the second paging message sent by the mobility management network element.

[0241] In some embodiments, a mobility management network element of the first network sends a second paging message to a first access network element, the second paging message including first information.

[0242] In some embodiments, the mobility management network element can be the AMF (Access and Mobility Management Function) in 5G, or a network element with corresponding functions in 4G or 6G, without specific limitations.

[0243] In some embodiments, the first access network element receives the second paging message carrying the first information and sends the first information to the terminal.

[0244] The implementation method of the first access network element sending the first information to the terminal can be referred to the relevant embodiments of step S210, which will not be repeated here.

[0245] In some embodiments, when a terminal has downlink service data, the mobility management network element sends a second paging message to the first access network element, and the first access network element sends a first paging message to the terminal upon receiving the second paging message.

[0246] In some embodiments, the mobility management network element sends second information to the first access network element.

[0247] In some embodiments, the second information is used to instruct the terminal to access the first network.

[0248] In some embodiments, the second paging message includes second information. The first access network element receives the second paging message carrying the second information and sends the second information to the terminal.

[0249] The implementation method of the first access network element sending the second information to the terminal can be referred to the relevant embodiments of step S410, which will not be repeated here.

[0250] In some embodiments, the second paging message includes first information and further includes network identification information used to identify the second network.

[0251] In some embodiments, the mobility management network element sends a second paging message to the first access network element. The second paging message carries first information and network identification information. Upon receiving the second paging message, the first access network element sends the first information and network identification information to the terminal.

[0252] In this embodiment of the application, when the terminal has a service, the mobility management network element of the first network sends a first paging message to the first access network element. The first paging message includes first information. After receiving the first paging message, the first access network element also sends the first information to the terminal to instruct the terminal to access the second access network element.

[0253] In some embodiments, the mobility management network element of the first network receives first information sent by the session management function network element of the first network and sends the first information to the first access network element.

[0254] In some embodiments, a mobility management network element of a first network receives first information sent by a session management function network element of the first network, and sends a second paging message carrying the first information to a first access network element.

[0255] Figure 6 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to another embodiment of this application; as shown below. Figure 6 As shown, steps S610 and S620 may be included. The following details these steps. Figure 6 Each step in the process.

[0256] S610, the mobility management network element receives the first network element transmission message from the session management function network element.

[0257] In some embodiments, the session management function network element of the first network sends a first network element delivery message to the mobility management network element of the first network.

[0258] In some embodiments, the first network element transmits messages between network elements of the core network of the first network.

[0259] In some embodiments, the message transmitted by the first network element is an N1N2 Message Transfer (a message transmitted between core networks).

[0260] In some embodiments, the first network element transmits a message to indicate that the terminal has downlink service.

[0261] In some embodiments, the first network element transmits messages carrying parameters such as PDU (Protocol Data Unit) session identifiers or QoS (Quality of Service) parameters used to identify DL (Downlink) packets.

[0262] In some embodiments, QoS parameters may include QCI (QoS Class Identifier), ARP (Allocation and Retention Priority), GBR (Guaranteed Bit Rate), and MBR (Max Bit Rate). The QCI value corresponds to the resource, resource type, and service type, as shown in Table 1.

[0263]

[0264] Table 1

[0265] S620, the mobility management network element obtains the terminal's subscription data.

[0266] In some embodiments, the mobility management network element receives a message from a first network element, which further instructs the mobility management network element to obtain the terminal's subscription data.

[0267] In some embodiments, the mobility management network element can obtain the subscription data in the unified data management network element. Of course, the subscription data can also be stored in the mobility management network element after the terminal is registered.

[0268] In some embodiments, the unified data management network element can be the Unified Data Management (UDM) in 5G, or it can be a network element with corresponding functions in 4G and 6G, without any specific restrictions here.

[0269] In some embodiments, after obtaining the subscription data, the mobility management network element sends a second paging message to the first access network element.

[0270] The implementation method of the mobility management network element sending the second paging message to the first access network element can be referred to the relevant embodiments of step S510, which will not be repeated here.

[0271] In some embodiments, the mobility management network element determines whether to send a second paging message carrying first information to the first access network element based on the subscription data.

[0272] In some embodiments, when the subscription data includes first capability information and second capability information, the mobility management network element sends a second paging message to the first access network element, and the second paging information includes the first information.

[0273] In some embodiments, when the subscription data includes first capability information and second capability information, and the subscription data is used to indicate that the terminal's Quality of Service Level Identifier (QCI) is a preset character, the mobility management network element sends a second paging message to the terminal, the second paging information including the first information.

[0274] In some embodiments, the first capability information is used to indicate that the terminal supports multi-track access capability, and the second capability information is used to indicate that the mobility management network element has multi-track access enabled.

[0275] In some embodiments, the mobility management network element determines whether to send a second paging message carrying the first information to the first access network element based on whether the subscription data includes first capability information and second capability information.

[0276] In some embodiments, the first capability information includes a second parameter, the value of which is a third preset value.

[0277] The second parameter is used to indicate whether the terminal supports multi-track access capability. The value of the second parameter is a third preset value indicating that the terminal supports multi-track access capability, meaning that the terminal can carry out services collaboratively in different networks.

[0278] In some embodiments, the third preset value is a string or a number, without specific limitations. The third preset value may be the same as or different from the first preset value.

[0279] In some embodiments, the third preset value can be 1.

[0280] In some embodiments, the value of the second parameter is a fourth preset value indicating that the terminal does not support multi-track access capability, meaning that the terminal can only conduct services in the first network currently camped.

[0281] In some embodiments, the fourth preset value is a string or a number, without specific limitations. The fourth preset value is different from the third preset value, and the fourth preset value may be the same as or different from the second preset value.

[0282] In some embodiments, the fourth preset value can be: false.

[0283] In some embodiments, the first capability information is sent by the terminal to the mobility management network element through the first access network element during the registration process.

[0284] In some embodiments, the first capability information may be sent to the mobility management network element during the service request process.

[0285] In some embodiments, the first capability information is stored in a unified data management network element.

[0286] In some embodiments, the second capability information may include a third parameter, which is a fifth preset value.

[0287] The third parameter is used to indicate whether the network elements of the core network have multi-track access enabled.

[0288] When the third parameter is the fifth preset value, it indicates that the network elements of the core network have multi-track access enabled.

[0289] Understandably, the network elements of the core network have multi-track access enabled, and the network elements of the core network share the information that the network elements of the core network have multi-track access enabled, that is, each network element of the core network has multi-track access enabled.

[0290] The fifth preset value can be a string or a number, without specific restrictions. The fifth preset value can be the same as the first preset value or the third preset value, or it can be different from at least one of the first preset value or the third preset value.

[0291] In some embodiments, the fifth preset value is 1.

[0292] When the third parameter is the sixth preset value, it indicates that the network elements of the core network have multi-track access enabled.

[0293] Understandably, the network elements of the core network do not have multi-track access enabled, and the network elements of the core network share the information that the network elements of the core network do not have multi-track access enabled. That is, none of the network elements of the core network have multi-track access enabled.

[0294] The sixth preset value can be a string or a number, without specific restrictions. The fifth preset value is different from the sixth preset value. The sixth preset value can be the same as the second preset value or the fourth preset value, or it can be different from at least one of the second preset value or the fourth preset value.

[0295] In some embodiments, the fifth preset value is 0.

[0296] In some embodiments, the mobility management network element may directly determine whether to send a second paging message carrying the first information based on the first capability information and the second capability information.

[0297] In some embodiments, if the mobility management network element determines that the subscription data includes first capability information and second capability information, it determines that the terminal needs to access the second access network element. At this time, it sends a second paging message carrying the first information to the first access network element.

[0298] In some embodiments, the mobility management network element determines whether to send a second paging message carrying the first information based on the first capability information, the second capability information, and the QCI.

[0299] In some embodiments, the mobility management network element determines that the subscription data includes first capability information and second capability information, and determines that QCI is a preset character. At this time, the mobility management network element determines that the terminal needs to access the second access network element, and sends a second paging message carrying the first information to the first access network element.

[0300] In some embodiments, when the value of QCI is a preset character, the corresponding service has high latency requirements, such as a low latency service. In this case, the mobility management network element determines that the terminal needs to access the second access network element.

[0301] In some embodiments, the default character of QCI is at least one of 1, 2, or 3.

[0302] In some embodiments, the mobility management network element may also send a second message to the first access network element.

[0303] In some embodiments, the mobility management network element determines whether to send a second paging message carrying second information to the first access network element based on the subscription data.

[0304] In some embodiments, where the subscription data includes third capability information and / or fourth capability information, the mobility management network element sends a second paging message to the first access network element.

[0305] In some embodiments, the third capability information is used to indicate that the terminal does not support multi-track access capability, and the fourth capability information is used to indicate that the mobility management network element does not have multi-track access enabled.

[0306] In some embodiments, the third capability information includes a second parameter, the value of which is a fourth preset value.

[0307] In some embodiments, the third capability information does not include the second parameter, in which case it indicates that the terminal does not support multi-track access capability.

[0308] In some embodiments, the fourth capability information includes a third parameter, which is a sixth preset value.

[0309] In some embodiments, the third capability information and the first capability information are sent by the terminal to the mobility management network element through the first access network element.

[0310] In some embodiments, the mobility management network element receives first capability information from the first access network element.

[0311] In some embodiments, the mobility management network element receives third capability information from the first access network element.

[0312] In some embodiments, after the mobility management network element receives the message transmitted by the first network element, the mobility management network element does not determine whether to send the first information or the second information to the first access network element, but determines whether to send the first information or the second information to the first access network element through the policy control function network element.

[0313] Figure 7 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to another embodiment of this application; as shown below. Figure 7 As shown, steps S710 to S730 may be included. The following details these steps. Figure 7 Each step in the process.

[0314] S710, the mobility management network element receives the first network element transmission message from the session management function network element.

[0315] In some embodiments, the implementation of the mobility management network element receiving the first network element transmission message from the session management function network element can refer to the implementation of S610, and will not be elaborated here.

[0316] S720: The mobility management network element sends a policy control request message to the policy control function network element.

[0317] In some embodiments, the policy control function network element can be the PCF (Policy Control Function) in 5G, or a network element with a corresponding function in 4G or 6G, without specific limitations.

[0318] In some embodiments, the policy control request message is a message transmitted between network elements.

[0319] In some embodiments, the policy control request message is a message used to request the creation or updating of policy control rules related to access and mobility management.

[0320] In some embodiments, the policy control request message may include at least one of the following: a subscription permanent identifier, QoS parameters, and the location information of the terminal.

[0321] S730: The mobility management network element receives policy control response messages from the policy control function network element.

[0322] In some embodiments, the policy control function network element can determine whether the terminal accesses the first access network element or the second access network element based on QoS parameters.

[0323] In some embodiments, QCI is a preset character, and the policy control response message includes first information.

[0324] In some embodiments, QCI is not a preset character, and the policy control response message includes second information.

[0325] In some embodiments, the policy control response message includes first information.

[0326] In some embodiments, the mobility management network element receives a policy control response message including first information and sends the first information to the first access network element.

[0327] In some embodiments, the policy control response message includes second information.

[0328] In some embodiments, the mobility management network element receives a policy control response message including second information and sends the second information to the first access network element.

[0329] In some embodiments, the session management function network element can directly send the first information to the mobility management network element.

[0330] In some embodiments, the mobility management network element receives first information sent by the session management function network element and directly sends the first information to the first access network element.

[0331] In some embodiments, the first information is carried in a message transmitted by the first network element.

[0332] In some embodiments, the session management function network element receives a downlink message indicating that the terminal has downlink service.

[0333] In some embodiments, the downlink message includes QoS parameters.

[0334] In some embodiments, the downlink message includes the terminal's Quality of Service Level Identifier (QCI).

[0335] In some embodiments, if the QCI is a preset character, the session management function network element sends the first information to the mobility management network element.

[0336] In some embodiments, if the QCI is not a preset character, the session management function network element sends a second message to the mobility management network element.

[0337] In some embodiments, the mobility management network element receives the second information sent by the session management function network element and directly sends the second information to the first access network element.

[0338] In some embodiments, the second information is carried in the message transmitted by the first network element.

[0339] In some embodiments, the mobility management network element receives a first network element transmission message from the session management function network element. The first network element transmission message includes first information. At this time, the mobility management network element may or may not obtain the subscription data. It does not need to determine the first capability information and the second capability information, nor does it need to send a policy control request message to the policy control function network element. The mobility management network element directly sends the first information to the first access network element.

[0340] In some embodiments, the mobility management network element receives a first network element transmission message from the session management function network element. The first network element transmission message includes second information. At this time, the mobility management network element may or may not obtain the subscription data. It does not need to determine the third capability information and the fourth capability information, nor does it need to send a policy control request message to the policy control function network element. The mobility management network element directly sends the second information to the first access network element.

[0341] In some embodiments, when a mobility management network element sends first information to a first access network element, it may also send network identification information directly to the first access network element.

[0342] It is understandable that when the mobility management network element sends the first information to the first access network element, it does not need to send the network identification information directly to the first access network element.

[0343] Figure 8 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to an embodiment of this application; as follows: Figure 8As shown, it may include steps S810 to S880. The following is a detailed description. Figure 8 Each step in the process.

[0344] S810, the session management function network element receives downlink messages.

[0345] When a terminal is engaged in a service, the session management function network element receives downlink messages.

[0346] S820, the session management function network element sends the first network element transmission message to the mobility management network element.

[0347] The implementation method of the session management function network element sending the first network element transmission message to the mobility management network element can be referred to the above embodiments, and will not be repeated here.

[0348] S830, the mobility management network element determines whether the terminal accesses the second network.

[0349] The implementation method of the mobility management network element determining whether to send a second paging message carrying the first information can refer to the method in the above embodiment where the mobility management network element determines whether to send a second paging message carrying the first information based on the first capability information and the second capability information. Alternatively, it can refer to the method in the above embodiment where the mobility management network element determines whether to send a second paging message carrying the first information based on the first capability information, the second capability information, and the QCI. This will not be elaborated here.

[0350] S840, the mobility management network element sends the first information to the first access network element.

[0351] The first message can be carried in the second paging message.

[0352] The implementation method of the mobility management network element sending the second paging message to the first access network element can be referred to the above embodiments, and will not be repeated here.

[0353] S850, the first access network element sends the first paging message to the terminal.

[0354] The implementation method of the first access network element sending the first paging message to the terminal can be referred to the above embodiments, and will not be repeated here.

[0355] S860: The terminal sends an RRC connection establishment request message to the first access network element.

[0356] The implementation method of the terminal sending an RRC connection establishment request message to the first access network element can be referred to the above embodiment, and will not be repeated here.

[0357] S870, the first access network element sends the first information to the terminal.

[0358] The first information sent by the first access network element to the terminal can be carried in the first message.

[0359] The implementation method of the first access network element sending the first message to the terminal can be referred to the above embodiments, and will not be repeated here.

[0360] S880, the terminal accesses the second access network element.

[0361] The implementation method for terminal access to the second access network element can be referred to the above embodiments, and will not be repeated here.

[0362] Figure 9 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to an embodiment of this application; as follows: Figure 9 As shown, it may include steps S910 to S990. The following is a detailed description. Figure 9 Each step in the process.

[0363] S910, the session management function network element receives downlink messages.

[0364] When a terminal is engaged in a service, the session management function network element receives downlink messages.

[0365] S920, the session management function network element sends the first network element transmission message to the mobility management network element.

[0366] The implementation method of the session management function network element sending the first network element transmission message to the mobility management network element can be referred to the above embodiments, and will not be repeated here.

[0367] S930: The mobility management network element sends a policy control request message to the policy control function network element.

[0368] The implementation method of the mobility management network element sending policy control request messages to the policy control function network element can be referred to in the above embodiments, and will not be repeated here.

[0369] S940, the policy control function network element sends a policy control response message to the mobility management network element.

[0370] The implementation method of the policy control function network element determining whether to send a policy control response message including the first information based on whether the QCI is a preset value can be referred to in the above embodiments, and will not be repeated here.

[0371] The policy control response message includes the first piece of information.

[0372] S950, the mobility management network element sends the first information to the first access network element.

[0373] The first message can be carried in the second paging message.

[0374] The implementation method of the mobility management network element sending the second paging message to the first access network element can be referred to the above embodiments, and will not be repeated here.

[0375] S960, the first access network element sends the first paging message to the terminal.

[0376] The implementation method of the first access network element sending the first paging message to the terminal can be referred to the above embodiments, and will not be repeated here.

[0377] S970, the terminal sends an RRC connection establishment request message to the first access network element.

[0378] The implementation method of the terminal sending an RRC connection establishment request message to the first access network element can be referred to the above embodiment, and will not be repeated here.

[0379] S980, the first access network element sends the first information to the terminal.

[0380] The first information sent by the first access network element to the terminal can be carried in the first message.

[0381] The implementation method of the first access network element sending the first message to the terminal can be referred to the above embodiments, and will not be repeated here.

[0382] S990, the terminal accesses the second access network element.

[0383] The implementation method for terminal access to the second access network element can be referred to the above embodiments, and will not be repeated here.

[0384] Figure 10 This is a schematic flowchart illustrating a method for cooperative access to a multi-track satellite network according to an embodiment of this application; as follows: Figure 10 As shown, it may include steps S1010 to S1070. The following is a detailed description. Figure 10 Each step in the process.

[0385] S1010, the session management function network element receives downlink messages.

[0386] When a terminal is engaged in a service, the session management function network element receives downlink messages.

[0387] S1020, The session management function network element sends the first network element transmission message to the mobility management network element.

[0388] The first network element transmits messages, including the first information.

[0389] The implementation method of the session management function network element sending a first network element transmission message including first information to the mobility management network element can be referred to the above embodiments, and will not be repeated here.

[0390] S1030, the mobility management network element sends the first information to the first access network element.

[0391] The first message can be carried in the second paging message.

[0392] The implementation method of the mobility management network element sending the second paging message to the first access network element can be referred to the above embodiments, and will not be repeated here.

[0393] S1040, the first access network element sends the first paging message to the terminal.

[0394] The implementation method of the first access network element sending the first paging message to the terminal can be referred to the above embodiments, and will not be repeated here.

[0395] S1050, The terminal sends an RRC connection establishment request message to the first access network element.

[0396] The implementation method of the terminal sending an RRC connection establishment request message to the first access network element can be referred to the above embodiment, and will not be repeated here.

[0397] S1060, The first access network element sends the first information to the terminal.

[0398] The first information sent by the first access network element to the terminal can be carried in the first message.

[0399] The implementation method of the first access network element sending the first message to the terminal can be referred to the above embodiments, and will not be repeated here.

[0400] S1070, Terminal accesses the second access network element.

[0401] The implementation method for terminal access to the second access network element can be referred to the above embodiments, and will not be repeated here.

[0402] In some embodiments, the first access network element is a high-orbit satellite and the second access network element is a low-orbit satellite. The orbital altitude of the first access network element is greater than that of the second access network element. When the terminal is idle, it camps on the first network. Since the orbital altitude of the first access network element is larger, the coverage area is larger, which can reduce the mobility management of the terminal. At the same time, if downlink data is interrupted, the core network of the first network can send first information to the first access network element. The first access network element will transmit the first information to the terminal, instructing the terminal to access the first network with a relatively lower orbital altitude and better service quality. In this way, the terminal can access the first access network element based on the first information.

[0403] Figure 11 This is a schematic block diagram of a device for cooperative access to a multi-track satellite network, as illustrated in an embodiment of this application. Figure 11 As shown, the communication device 110 may include a receiving module 111 and a processing module 112.

[0404] In one implementation, the multi-track satellite network collaborative access device 110 can be used to implement the operation corresponding to the terminal in the above embodiments. For example, the multi-track satellite network collaborative access device 110 is a terminal, or a component configured in the terminal, such as a chip or circuit.

[0405] The device 110 for coordinated access to the multi-track satellite network can achieve... Figures 2 to 10 The corresponding operations of the terminal are shown in the embodiment of the method for cooperative access to a multi-track satellite network. The apparatus 110 for cooperative access to the multi-track satellite network may include tools for performing... Figures 2 to 10 The method embodiment for multi-track satellite network cooperative access shown includes modules of the method executed by the terminal. Furthermore, each module in the multi-track satellite network cooperative access apparatus 110 and the aforementioned other operations and / or functions are respectively designed to implement... Figures 2 to 10 The corresponding process in the embodiment of the method for collaborative access to multi-track satellite networks is shown.

[0406] In some embodiments, the receiving module 111 is configured to receive first information from a first access network element, the first information being used to instruct the terminal to access a second network, wherein the orbital height of the second access network element of the second network is different from the orbital height of the first access network element of the first network.

[0407] In some embodiments, the processing module 112 is used to establish a connection with the second access network element.

[0408] In some embodiments, the first information includes a first parameter, the value of which is a first preset value.

[0409] In some embodiments, the receiving module 111 is further configured to receive network identification information sent from the first access network element, the network identification information being used to identify the second network.

[0410] In some embodiments, the receiving module 111 is further configured to receive a first paging message from the first access network element.

[0411] In some embodiments, the apparatus 110 for multi-track satellite network cooperative access may further include a transmitting module, which is used to transmit a Radio Resource Control (RRC) connection establishment request message to a first access network element.

[0412] In some embodiments, the receiving module 111 is further configured to receive a first message, the first message including first information, the first message being at least one of the following: a paging message, an RRC reconfiguration message, an RRC connection establishment message, or an RRC connection establishment rejection message.

[0413] In some embodiments, the receiving module 111 is further configured to receive second information from the first access network element, the second information being used to instruct the terminal to access the first network;

[0414] Processing module 112 is also used to establish a connection with the first access network element of the first network.

[0415] In some embodiments, the receiving module 111 is further configured to receive a first paging message from the first access network element;

[0416] The sending module is also used to send a connection establishment request message to the first access network element.

[0417] In some embodiments, the second information includes the first parameter and the value of the first parameter is a second preset value, or the second information does not include the first parameter.

[0418] In some embodiments, the receiving module 111 is further configured to receive a second message from the first access network element. The second message includes second information and is at least one of the following: a paging message, an RRC reconfiguration message, an RRC connection establishment message, or an RRC connection establishment rejection message.

[0419] Figure 12 This is a schematic block diagram of a device for cooperative access to a multi-track satellite network, as shown in another embodiment of this application. Figure 12 As shown, the device 120 for collaborative access to the multi-track satellite network may include a transmission module 121.

[0420] In one implementation, the multi-track satellite network collaborative access device 120 can be used to implement the operation corresponding to the first access network element in the above embodiments. For example, the multi-track satellite network collaborative access device 120 is the first access network element, or a component configured in the first access network element, such as a chip or circuit.

[0421] The device 120 for collaborative access to the multi-track satellite network can achieve... Figures 2 to 10 The illustrated method embodiment for multi-track satellite network cooperative access includes the corresponding operation of the first access network element. The apparatus 120 for this multi-track satellite network cooperative access may include functions for performing… Figures 2 to 10 The method embodiment for multi-track satellite network cooperative access shown is a module of the method executed by the first access network element. Furthermore, each module in the multi-track satellite network cooperative access apparatus 120 and the aforementioned other operations and / or functions are respectively for implementing... Figures 2 to 11 The corresponding process in the embodiment of the method for collaborative access to multi-track satellite networks is shown.

[0422] The sending module 121 is used to send first information to the terminal. The terminal is stationed in the first network, which includes a first access network element. The first information is used to instruct the terminal to access the second network. The orbital height of the second access network element in the second network is different from that of the first access network element in the first network.

[0423] In one possible implementation, the first information includes a first parameter, the value of which is a first preset value.

[0424] In one possible implementation, the sending module 121 is used to send network identification information to the terminal, the network identification information being used to identify the second network.

[0425] In one possible implementation, the sending module 121 is used to send a first paging message to the terminal.

[0426] The multi-track satellite network collaborative access device 120 also includes a receiving module, which is used to receive Radio Resource Control (RRC) connection establishment request messages from the terminal.

[0427] In one possible implementation, the sending module 121 is used to send a first message to the terminal. The first message includes first information and can be at least one of the following: a paging message, an RRC reconfiguration message, an RRC connection establishment message, or an RRC connection establishment rejection message.

[0428] In one possible implementation, the sending module 121 is used to send second information to the terminal, the second information being used to instruct the terminal to access the first network.

[0429] In one possible implementation, the sending module 121 is used to send a first paging message to the terminal.

[0430] The receiving module of the multi-track satellite network collaborative access device 120 is used to receive RRC connection establishment request messages from the terminal.

[0431] In one possible implementation, the second information includes the first parameter and the value of the first parameter is a second preset value, or the second information does not include the first parameter.

[0432] In one possible implementation, the sending module 121 is used to send a second message to the terminal. The second message includes second information and is at least one of the following: a paging message, an RRC reconfiguration message, an RRC connection establishment message, or an RRC connection establishment rejection message.

[0433] In one possible implementation, the receiving module of the multi-track satellite network cooperative access device 120 is used to receive a second paging message sent from a mobility management network element, the second paging message including the first information.

[0434] In one possible implementation, the second paging message also includes network identification information used to identify the second network.

[0435] Figure 13 This is a schematic block diagram of a device for cooperative access to a multi-track satellite network, as shown in another embodiment of this application. Figure 13As shown, the device 130 for collaborative access to the multi-track satellite network may include a transmission module 131.

[0436] In one implementation, the multi-track satellite network cooperative access device 130 can be used to implement the operation corresponding to the mobility management network element in the above embodiments. For example, the multi-track satellite network cooperative access device 130 is a mobility management network element, or a component configured in the mobility management network element, such as a chip or circuit.

[0437] The device 130 for collaborative access to the multi-track satellite network can achieve... Figures 2 to 10 The illustrated method embodiment for multi-track satellite network cooperative access includes corresponding operations of the mobility management network element. The apparatus 130 for this multi-track satellite network cooperative access may include functions for performing… Figures 2 to 10 The illustrated method embodiment for multi-track satellite network cooperative access is a module of the method executed by the mobility management network element. Furthermore, each module in the multi-track satellite network cooperative access apparatus 130 and the aforementioned other operations and / or functions are respectively designed to implement... Figures 2 to 11 The corresponding process in the embodiment of the method for collaborative access to multi-track satellite networks is shown.

[0438] The sending module 131 is used to send first information to the first access network element of the first network. The first information is used to instruct the terminal stationed in the first network to access the second network. The orbital height of the second access network element of the second network is different from the orbital height of the first access network element of the first network.

[0439] In one possible implementation, the multi-track satellite network collaborative access device 130 further includes a receiving module, which is used to receive a first network element transmission message from a session management function network element. The first network element transmission message is used to indicate that the terminal has downlink services and to obtain the terminal's subscription data.

[0440] The sending module 131 is used to send a second paging message to the first access network element according to the terminal's subscription data. The second paging message includes the first information.

[0441] In one possible implementation, the sending module 131 is used to send a second paging message to the first access network element when the subscription data includes first capability information and second capability information. The first capability information is used to indicate that the terminal supports multi-track access capability, and the second capability information is used to indicate that the mobility management network element has multi-track access enabled.

[0442] In one possible implementation, the sending module 131 is configured to send a second paging message to the terminal when the subscription data includes first capability information and second capability information, and the subscription data is used to indicate that the terminal's Quality of Service Level Identifier (QCI) is a preset character. The first capability information is used to indicate that the terminal supports multi-track access capability, and the second capability information is used to indicate that the mobility management network element has multi-track access enabled.

[0443] In one possible implementation, the first capability information includes a second parameter, the value of which is a third preset value.

[0444] In one possible implementation, the first information includes a first parameter, the value of which is a first preset value.

[0445] In one possible implementation, the sending module 131 is used to send second information to the first access network element, the second information being used to instruct the terminal to access the first network.

[0446] In one possible implementation, the receiving module of the multi-track satellite network collaborative access device 130 is used to receive a first network element transmission message from a session management function network element. The first network element transmission message is used to indicate that the terminal has downlink services and to obtain the terminal's subscription data.

[0447] The sending module 131 is used to send a second paging message to the first access network element according to the terminal's subscription data. The second paging message includes second information.

[0448] In one possible implementation, the sending module 131 is configured to send a second paging message to the first access network element when the subscription data includes third capability information and / or fourth capability information, wherein the third capability information is used to indicate that the terminal does not support multi-track access capability, and the fourth capability information is used to indicate that the mobility management network element does not have multi-track access enabled.

[0449] In one possible implementation, the third capability information includes a second parameter, the value of which is a fourth preset value, or the third capability information does not include the second parameter.

[0450] In one possible implementation, the second information includes the first parameter and the value of the first parameter is a second preset value, or the second information does not include the first parameter.

[0451] In one possible implementation, the receiving module of the multi-track satellite network collaborative access device 130 is used to receive first capability information from a first access network element, the first capability information being used to indicate that the terminal supports multi-track access capability.

[0452] In one possible implementation, the receiving module of the multi-track satellite network collaborative access device 130 is used to receive third capability information from the first access network element, the third capability information being used to indicate that the terminal does not support multi-track access capability.

[0453] In one possible implementation, the receiving module of the multi-track satellite network collaborative access device 130 is used to receive a first network element transmission message from a session management function network element. The first network element transmission message is used to indicate that the terminal has downlink services and to obtain the terminal's subscription data.

[0454] The sending module 131 is used to send policy control request messages to the policy control function network element.

[0455] The receiving module of the multi-track satellite network collaborative access device 130 is used to receive policy control response messages from policy control function network elements, and the policy control response messages include first information.

[0456] In one possible implementation, the receiving module of the multi-track satellite network collaborative access device 130 is used to receive a first network element transmission message from a session management function network element. The first network element transmission message includes first information and is used to indicate that the terminal has downlink service.

[0457] In one possible implementation, the sending module 131 is used to send network identification information to the first access network element, the network identification information being used to identify the second network.

[0458] Figure 14 This is a schematic block diagram of a device for cooperative access to a multi-track satellite network, as shown in another embodiment of this application. Figure 14 As shown, the device 140 for collaborative access to the multi-track satellite network may include a transmission module 141.

[0459] In one implementation, the multi-track satellite network collaborative access device 140 can be used to implement the operation corresponding to the policy control function network element in the above embodiments. For example, the multi-track satellite network collaborative access device 140 is a policy control function network element, or a component configured in the session management function network element, such as a chip or circuit.

[0460] The device 140 for collaborative access to the multi-track satellite network can achieve... Figures 2 to 10 The illustrated method embodiment for multi-track satellite network cooperative access includes the corresponding operations of the policy control function network element. The apparatus 140 for this multi-track satellite network cooperative access may include functions for performing… Figures 2 to 10 The illustrated method embodiment for multi-track satellite network cooperative access is a module for the policy control function network element to execute the method. Furthermore, each module in the multi-track satellite network cooperative access apparatus 140 and the aforementioned other operations and / or functions are respectively designed to implement... Figures 2 to 11The corresponding process in the embodiment of the method for collaborative access to multi-track satellite networks is shown.

[0461] The sending module 141 is used to send first information to the mobility management network element. The first information is used to instruct the terminal stationed in the first network to access the second network. The orbital height of the second access network element in the second network is different from the orbital height of the first access network element in the first network.

[0462] In one possible implementation, the first information includes a first parameter, the value of which is a first preset value.

[0463] In one possible implementation, the multi-track satellite network cooperative access device 140 further includes a receiving module for receiving policy control request messages from mobility management network elements.

[0464] The sending module 141 is used to send a policy control response message to the mobility management network element. The policy control response message includes first information.

[0465] In one possible implementation, the sending module 141 is used to send second information to the mobility management network element, the second information being used to instruct the terminal to access the first network.

[0466] In one possible implementation, the second information includes the first parameter and the value of the first parameter is a second preset value, or the second information does not include the first parameter.

[0467] Figure 15 This is a schematic block diagram of a device for cooperative access to a multi-track satellite network, as shown in another embodiment of this application. Figure 15 As shown, the device 150 for collaborative access to the multi-track satellite network may include a transmission module 151.

[0468] In one implementation, the multi-track satellite network collaborative access device 150 can be used to implement the operation corresponding to the session management function network element in the above embodiments. For example, the multi-track satellite network collaborative access device 150 is a session management function network element, or a component configured in the session management function network element, such as a chip or circuit.

[0469] The device 150 for collaborative access to the multi-track satellite network can achieve... Figures 2 to 10 The method embodiment for cooperative access to a multi-track satellite network shown illustrates the corresponding operations of the session management function network element. The apparatus 150 for cooperative access to the multi-track satellite network may include functions for performing… Figures 2 to 10 The method embodiment for multi-track satellite network cooperative access shown is a module of the method executed by the session management function network element. Furthermore, each module in the multi-track satellite network cooperative access apparatus 150 and the aforementioned other operations and / or functions are respectively for implementing... Figures 2 to 11The corresponding process in the embodiment of the method for collaborative access to multi-track satellite networks is shown.

[0470] The sending module 151 is used to send first information to the mobility management network element. The first information is used to instruct the terminal stationed in the first network to access the second network. The orbital height of the second access network element in the second network is different from the orbital height of the first access network element in the first network.

[0471] In one possible implementation, the sending module 151 is further configured to send a first network element transmission message to the mobility management network element. The first network element transmission message is used to indicate that the terminal has downlink service. The first network element transmission message includes first information.

[0472] In one possible implementation, the multi-track satellite network collaborative access device 150 further includes a receiving module and a processing module. The receiving module of the multi-track satellite network collaborative access device 150 is used to receive downlink messages; the downlink messages include the terminal's Quality of Service Level Identifier (QCI).

[0473] The processing module of the multi-track satellite network collaborative access device 150 is used to send the first information to the mobility management network element if the QCI is a preset character.

[0474] In one possible implementation, the first information includes a first parameter, the value of which is a first preset value.

[0475] In one possible implementation, the sending module 151 is further configured to send second information to the mobility management network element, the second information being used to instruct the terminal to access the first network.

[0476] In one possible implementation, the second information includes the first parameter and the value of the first parameter is a second preset value, or the second information does not include the first field.

[0477] Figure 16 This is a schematic block diagram of a communication device shown in one embodiment of this application. Figure 16 As shown, the communication device 160 can be an access network element, such as the first access network element in the first network, or a terminal, or a network element in the core network, such as a mobility management network element, a policy control function network element, a session management function network element, etc. The communication device 160 can be used to implement the method described in the above method embodiments, and for details, please refer to the description in the above method embodiments.

[0478] The communication device 160 includes a processor 161 and a memory 162 communicatively connected to the processor 161.

[0479] Memory 162 is used to store computer-executed instructions.

[0480] The processor 161 is used to execute computer execution instructions stored in the memory, so that the communication device 160 performs the above-described method.

[0481] In some embodiments, the communication device 160 may further include a transceiver 163, which may include a transmitter and / or a receiver. The transmitter may also be referred to as a transmitter, transmitter port, or transmitter interface, and the receiver may also be referred to as a receiver port, receiver interface, or similar descriptions. Exemplarily, each of the memory 162, processor 161, and transceiver 163 is interconnected via a bus 164.

[0482] The processor 160 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this application can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0483] In some embodiments, all or part of the memory 162 may also be located outside the communication device 160.

[0484] In some embodiments, if the communication device 160 is a terminal, the terminal includes: a processor and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the multi-track satellite network cooperative access method performed by the terminal as described above.

[0485] In some embodiments, the communication device 160 is a first access network element, which includes: a processor and a memory communicatively connected to the processor; the memory stores computer-executed instructions; the processor executes the computer-executed instructions stored in the memory to implement the multi-track satellite network cooperative access method executed by the first access network element as described above.

[0486] In some embodiments, the communication device 160 is a mobility management network element, which includes: a processor and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the multi-track satellite network cooperative access method performed by the mobility management network element as described above.

[0487] In some embodiments, the communication device 160 is a policy control function network element, which includes: a processor and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the multi-track satellite network cooperative access method performed by the policy control function network element as described above.

[0488] In some embodiments, the communication device 160 is a session management function network element, which includes: a processor and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the multi-track satellite network cooperative access method performed by the session management function network element as described above.

[0489] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the method for cooperative access to a multi-track satellite network as shown in any of the above embodiments.

[0490] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the method for cooperative access to a multi-track satellite network as shown in any of the above embodiments.

[0491] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0492] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A method for collaborative access to a multi-track satellite network, characterized in that, Applied to a terminal that is camped on a first network, the method includes: The terminal receives first information from a first access network element of the first network, the first information being used to instruct the terminal to access a second network, wherein the orbital height of the second access network element of the second network is different from the orbital height of the first access network element of the first network. Establish a connection with the second access network element.

2. The method according to claim 1, characterized in that, The first information includes a first parameter, the value of which is a first preset value.

3. The method according to any one of claims 1-2, characterized in that, The method further includes: The network identification information is received from the first access network element, and the network identification information is used to identify the second network.

4. The method according to any one of claims 1-3, characterized in that, Before receiving the first information from the first access network element of the first network, the method further includes: Receive the first paging message from the first access network element; Send a Radio Resource Control (RRC) Connection Establishment Request message to the first access network element.

5. The method according to claims 1-4, characterized in that, The receiving of first information from the first access network element of the first network includes: Receive a first message, the first message including the first information, the first message being one of the following: a paging message, an RRC reconfiguration message, an RRC connection establishment message, or an RRC connection establishment rejection message.

6. The method according to any one of claims 1-5, characterized in that, The method further includes: Receive second information from the first access network element, the second information being used to instruct the terminal to access the first network; Establish a connection with the first access network element of the first network.

7. The method according to claim 6, characterized in that, Before receiving the second information from the first access network element, the method further includes: Receive the first paging message from the first access network element; Send a connection establishment request message to the first access network element.

8. The method according to claim 6 or 7, characterized in that, The second information includes a first parameter, and the value of the first parameter is a second preset value.

9. The method according to any one of claims 6-8, characterized in that, The receiving of the second information from the first access network element includes: Receive a second message from the first access network element. The second message includes the second information. The second message is one of the following: a paging message, an RRC reconfiguration message, an RRC connection establishment message, or an RRC connection establishment rejection message.

10. A method for collaborative access to a multi-track satellite network, characterized in that, Applied to a first access network element, the method includes: A first message is sent to a terminal, which is camped on a first network, the first network including the first access network element. The first message is used to instruct the terminal to access a second network, the orbital height of the second access network element of the second network being different from the orbital height of the first access network element of the first network.

11. The method according to claim 10, characterized in that, The first information includes a first parameter, the value of which is a first preset value.

12. The method according to any one of claims 10-11, characterized in that, The method further includes: The network identification information is sent to the terminal, and the network identification information is used to identify the second network.

13. The method according to any one of claims 10-12, characterized in that, Before sending the first information to the terminal, the method further includes: Send a first paging message to the terminal; Receive a Radio Resource Control (RRC) connection establishment request message from the terminal.

14. The method according to any one of claims 10-13, characterized in that, Sending the first information to the terminal includes: Send a first message to the terminal. The first message includes the first information. The first message is one of the following: a paging message, an RRC reconfiguration message, an RRC connection establishment message, or an RRC connection establishment rejection message.

15. The method according to any one of claims 10-14, characterized in that, The method further includes: Send a second message to the terminal, the second message being used to instruct the terminal to access the first network.

16. The method according to claim 15, characterized in that, Before sending the second message to the terminal, the method further includes: Send a first paging message to the terminal; Receive an RRC connection establishment request message from the terminal.

17. The method according to claim 15 or 16, characterized in that, The second information includes a first parameter, and the value of the first parameter is a second preset value.

18. The method according to any one of claims 15-17, characterized in that, Sending the second information to the terminal includes: Send a second message to the terminal. The second message includes the second information. The second message is one of the following: a paging message, an RRC reconfiguration message, an RRC connection establishment message, or an RRC connection establishment rejection message.

19. The method according to any one of claims 10-14, characterized in that, Before sending the first information to the terminal, the method further includes: Receive a second paging message sent from a mobility management network element, the second paging message including the first information.

20. The method according to claim 19, characterized in that, The second paging message also includes network identification information, which is used to identify the second network.

21. A method for collaborative access to a multi-track satellite network, characterized in that, Applied to mobility management network elements, the method includes: Send first information to the first access network element of the first network. The first information is used to instruct the terminal stationed in the first network to access the second network. The orbital height of the second access network element of the second network is different from the orbital height of the first access network element of the first network.

22. The method according to claim 21, characterized in that, The method further includes: The terminal receives a first network element transmission message from a session management function network element. The first network element transmission message is used to indicate that the terminal has downlink services and to obtain the terminal's subscription data. The second paging message is sent to the first access network element based on the terminal's subscription data. The second paging message includes the first information.

23. The method according to claim 22, characterized in that, Sending the second paging message to the first access network element based on the terminal's subscription data includes: When the signed-up data includes first capability information and second capability information, a second paging message is sent to the first access network element. The first capability information is used to indicate that the terminal supports multi-track access capability, and the second capability information is used to indicate that the mobility management network element has multi-track access enabled.

24. The method according to claim 22, characterized in that, Sending the second paging message to the first access network element based on the terminal's subscription data includes: When the subscription data includes first capability information and second capability information, and the subscription data is used to indicate that the terminal's Quality of Service Level Identifier (QCI) is a preset character, a second paging message is sent to the terminal. The first capability information is used to indicate that the terminal supports multi-track access capability, and the second capability information is used to indicate that the mobility management network element has multi-track access enabled.

25. The method according to claim 23 or 24, characterized in that, The first capability information includes a second parameter, and the value of the second parameter is a third preset value.

26. The method according to any one of claims 21-25, characterized in that, The first information includes a first parameter, the value of which is a first preset value.

27. The method according to claims 21-26, characterized in that, The method further includes: Send a second message to the first access network element, the second message being used to instruct the terminal to access the first network.

28. The method according to claim 27, characterized in that, Before sending the second information to the first access network element, the method further includes: The terminal receives a first network element transmission message from a session management function network element. The first network element transmission message is used to indicate that the terminal has downlink services and to obtain the terminal's subscription data. The second paging message is sent to the first access network element based on the terminal's subscription data. The second paging message includes second information.

29. The method according to claim 28, characterized in that, Sending the second paging message to the first access network element based on the terminal's subscription data includes: If the signed data includes third capability information and / or fourth capability information, a second paging message is sent to the first access network element. The third capability information is used to indicate that the terminal does not support multi-track access capability, and the fourth capability information is used to indicate that the mobility management network element does not have multi-track access enabled.

30. The method according to claim 29, characterized in that, The third capability information includes a second parameter, the value of which is a fourth preset value.

31. The method according to any one of claims 27-30, characterized in that, The second information includes a first parameter, and the value of the first parameter is a second preset value.

32. The method according to any one of claims 21-31, characterized in that, The method further includes: receiving first capability information from the first access network element, wherein the first capability information is used to indicate that the terminal supports multi-track access capability.

33. The method according to any one of claims 21-32, characterized in that, The method further includes: receiving third capability information from the first access network element, the third capability information being used to indicate that the terminal does not support multi-track access capability.

34. The method according to claim 21, characterized in that, The method further includes: The terminal receives a first network element transmission message from a session management function network element, the first network element transmission message being used to indicate that the terminal has downlink service; Send a policy control request message to the policy control function network element; The system receives a policy control response message from the policy control function network element, the policy control response message including the first information.

35. The method according to claim 21, characterized in that, The method further includes: The terminal receives a first network element transmission message from a session management function network element. The first network element transmission message includes the first information and is used to indicate that the terminal has downlink service.

36. The method according to any one of claims 21-35, characterized in that, The method further includes: Send network identification information to the first access network element, wherein the network identification information is used to identify the second network.

37. A method for collaborative access to a multi-track satellite network, characterized in that, Applied to policy control function network elements, the method includes: Send first information to the mobility management network element, the first information being used to instruct a terminal stationed in the first network to access the second network, wherein the orbital altitude of the second access network element in the second network is different from the orbital altitude of the first access network element in the first network.

38. The method according to claim 37, characterized in that, The first information includes a first parameter, the value of which is a first preset value.

39. The method according to claim 37 or 38, characterized in that, The method further includes: Receive policy control request messages from the mobility management network element; A policy control response message is sent to the mobility management network element, the policy control response message including the first information.

40. The method according to any one of claims 37-39, characterized in that, The method further includes: Send a second message to the mobility management network element, the second message being used to instruct the terminal to access the first network.

41. The method according to claim 40, characterized in that, The second information includes a first parameter, and the value of the first parameter is a second preset value.

42. A method for collaborative access to a multi-track satellite network, characterized in that, The method, applied to a network element for session management functions, includes: Send first information to the mobility management network element, the first information being used to instruct a terminal stationed in the first network to access the second network, wherein the orbital altitude of the second access network element in the second network is different from the orbital altitude of the first access network element in the first network.

43. The method according to claim 42, characterized in that, The method further includes: A first network element transmission message is sent to the mobility management network element. The first network element transmission message is used to indicate that the terminal has downlink service. The first network element transmission message includes the first information.

44. The method according to any one of claims 42-43, characterized in that, Before sending the first information to the mobility management network element, the method further includes: Receive downlink messages; the downlink messages include the terminal's Quality of Service Level Identifier (QCI); If the QCI is a preset character, the first information is sent to the mobility management network element.

45. The method according to any one of claims 42-44, characterized in that, The first information includes a first parameter, the value of which is a first preset value.

46. ​​The method according to any one of claims 42-45, characterized in that, The method further includes: Send a second message to the mobility management network element, the second message being used to instruct the terminal to access the first network.

47. The method according to claim 46, characterized in that, The second information includes a first parameter, and the value of the first parameter is a second preset value.

48. A device for collaborative access to a multi-track satellite network, characterized in that, Applied to a terminal, the terminal being hosted in a first network, the device includes: A receiving module is configured to receive first information from a first access network element of the first network, the first information being used to instruct the terminal to access a second network, wherein the orbital height of the second access network element of the second network is different from the orbital height of the first access network element of the first network; The processing module is used to establish a connection with the second access network element.

49. A device for collaborative access to a multi-track satellite network, characterized in that, Applied to a first access network element, the device includes: A sending module is used to send first information to a terminal, the terminal being hosted in a first network, the first network including a first access network element, the first information being used to instruct the terminal to access a second network, the orbital height of the second access network element of the second network being different from the orbital height of the first access network element of the first network.

50. A device for collaborative access to a multi-track satellite network, characterized in that, The device, applied to mobility management network elements, includes: The sending module is used to send first information to the first access network element of the first network. The first information is used to instruct a terminal stationed in the first network to access the second network. The orbital height of the second access network element of the second network is different from the orbital height of the first access network element of the first network.

51. A device for collaborative access to a multi-track satellite network, characterized in that, The device, applied to a policy control function network element, includes: The sending module is used to send first information to the mobility management network element. The first information is used to instruct a terminal stationed in the first network to access the second network. The orbital altitude of the second access network element in the second network is different from the orbital altitude of the first access network element in the first network.

52. A device for collaborative access to a multi-track satellite network, characterized in that, The device, applied to a network element for session management functions, includes: The sending module is used to send first information to the mobility management network element. The first information is used to instruct a terminal stationed in the first network to access the second network. The orbital altitude of the second access network element in the second network is different from the orbital altitude of the first access network element in the first network.

53. A terminal, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 1-9.

54. An access network element, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 10-20.

55. A mobility management network element, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 21-36.

56. A policy control function network element, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 37-41.

57. A network element for session management function, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 42-47.

58. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1-47.

59. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the method of any one of claims 1-47.

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