A communication method, network device, base station and computer readable storage medium

Abstract

A communication method, network device, base station and computer readable storage medium. The method comprises: receiving a 5G data packet; performing protocol conversion on the received 5G data packet; and sending the protocol-converted packet to a non-3GPP access interworking function network element. The embodiment of the application realizes the interconnection and interworking technology between the satellite and the ground 5G core network, supports the performance enhancement proxy based on the 5G data service model, and solves the performance reduction problem caused by the high bit error rate, long delay, asymmetric link, high interruption rate and other characteristics of the existing link.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of mobile communication technology, specifically to a communication method, network device, base station, and computer-readable storage medium. Background Technology

[0002] Existing performance enhancement proxy (PEP) in the communications field can be applied to wireless ad hoc networks, but it does not support 5G data service communication and cannot connect to non-3GPP interworking function (N3IWF) network elements.

[0003] Used to perform paging operations in 5G communication networks, without involving gateways or satellite access networks, and does not support performance enhancement agents.

[0004] The method is used to instruct the terminal device to modify the data transmission path, including the path through which the terminal device accesses the core network using non-3GPP technology, but it does not involve gateways or satellite access networks and does not support performance-enhanced proxy (PEP).

[0005] Therefore, interconnection technology between satellites and ground core networks is needed to address the performance degradation caused by the high bit error rate, long latency, link asymmetry, and high interruption rate of existing links. Summary of the Invention

[0006] At least one embodiment of the present invention provides a communication method, a network device, a base station, and a computer-readable storage medium.

[0007] According to one aspect of the present invention, at least one embodiment provides a communication method, comprising:

[0008] Receive 5G data packets;

[0009] Perform protocol conversion on the received 5G data packets;

[0010] The protocol-converted message is sent to the non-3GPP access interoperability network element.

[0011] According to at least one embodiment of the present invention, the method further includes:

[0012] The performance enhancement proxy PEP determines whether the received service data is a 5G data packet based on the throughput of the service data.

[0013] According to at least one embodiment of the present invention, the method further includes: before performing protocol conversion on the received 5G data packets:

[0014] Receive user terminal access requests;

[0015] Authenticate the user terminal;

[0016] For the authenticated user terminal, the received service data is filtered to generate 5G data packets;

[0017] Send the 5G data packet.

[0018] According to at least one embodiment of the present invention, the protocol conversion of the received 5G data packets includes:

[0019] The performance-enhanced proxy (PEP) based on the 5G data service model converts satellite data packets and terrestrial data packets to each other.

[0020] According to at least one embodiment of the present invention, sending the protocol-converted message to a non-3GPP access interoperability network element includes:

[0021] The message converted by the protocol is copied and stored in a high-speed cache, and then sent to the 5G core network through the non-3GPP access interoperability function network element.

[0022] According to at least one embodiment of the present invention, the method further includes:

[0023] The system connects to the control plane (CP) and user plane (UP) of the 5G core network via the N2 and N3 interfaces, and provides a secure connection for the user terminal.

[0024] According to at least one embodiment of the present invention, when the performance enhancement agent PEP detects that a data copy is lost, it retransmits the data copy in the cache.

[0025] According to at least one embodiment of the present invention, the non-3GPP access interoperability function network element is used for: AMF selection, packet encapsulation and decapsulation, and packet inspection.

[0026] According to a second aspect of the present invention, at least one embodiment provides a network device for 5G satellite access, the network device comprising:

[0027] 5G data packet receiving module, used to receive 5G data packets;

[0028] The protocol conversion module is used to convert the received 5G data packets into protocols.

[0029] Non-3GPP access interoperability network elements are used to receive messages after protocol conversion.

[0030] According to at least one embodiment of the present invention, the network device further includes:

[0031] The Performance Enhancement Proxy (PEP) is used to determine whether received service data is a 5G data packet based on the throughput of service data.

[0032] According to at least one embodiment of the present invention, the network device further includes:

[0033] The access request receiving module is used to receive access requests from user terminals.

[0034] The authentication module authenticates the user terminal;

[0035] The service data filtering module is used to filter the received service data for the authenticated user terminal in order to generate 5G data packets.

[0036] The 5G data packet sending module sends the 5G data packet.

[0037] According to at least one embodiment of the present invention, the protocol conversion module is further configured to:

[0038] The performance-enhanced proxy (PEP) based on the 5G data service model converts satellite data packets and terrestrial data packets to each other.

[0039] According to at least one embodiment of the present invention, the network device further includes:

[0040] The message copying and storage module copies and stores the protocol-converted message into a high-speed cache, and sends it to the 5G core network through the non-3GPP access interoperability function network element.

[0041] According to at least one embodiment of the present invention, the network device further includes:

[0042] The secure connection module is used to connect to the control plane (CP) and user plane (UP) of the 5G core network via the N2 and N3 interfaces, and to provide a secure connection for the user terminal.

[0043] According to at least one embodiment of the present invention, the message copying and storage module is further configured to:

[0044] When the performance enhancement agent PEP detects that a data copy is lost, it retransmits the data copy in the cache.

[0045] According to at least one embodiment of the present invention, the non-3GPP access interoperability function network element is further used for: AMF selection, packet encapsulation and decapsulation, and packet inspection.

[0046] According to at least one embodiment of the present invention, the network device is a gateway.

[0047] According to a third aspect of the present invention, at least one embodiment provides a base station, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the method described above.

[0048] According to a fourth aspect of the present invention, at least one embodiment provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the method described above.

[0049] Compared with the prior art, the communication method, network equipment, base station and computer-readable storage medium provided by the embodiments of the present invention realize the interconnection technology between satellite and ground 5G core network, and realize the support for performance enhancement proxy based on 5G data service model. It also solves the performance degradation problems caused by the high bit error rate, time delay, link asymmetry and high interruption rate of existing links. Attached Figure Description

[0050] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0051] Figure 1 A flowchart illustrating the application of the communication method provided in this embodiment of the invention to the terminal side;

[0052] Figure 2 Another flowchart illustrating the application of the communication method provided in this embodiment of the invention to the terminal side;

[0053] Figure 3 A schematic diagram of a network device provided in an embodiment of the present invention;

[0054] Figure 4 This is another schematic diagram of the network device provided in an embodiment of the present invention;

[0055] Figure 5 This is another schematic diagram of the network device provided in an embodiment of the present invention;

[0056] Figure 6 A flowchart illustrating the workflow of a 5G satellite access gateway provided in an embodiment of the present invention;

[0057] Figure 7 This is a schematic diagram of the PEP processing of a 5G satellite access gateway provided in an embodiment of the present invention;

[0058] Figure 8 This is another schematic diagram of the PEP processing of the 5G satellite access gateway provided in an embodiment of the present invention;

[0059] Figure 9 This is a flowchart illustrating the adaptation process for non-3GPP access interoperability network elements provided in this embodiment of the invention. Detailed Implementation

[0060] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0061] The terms "first," "second," etc., used in the specification and claims of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. The terms "and / or" in the specification and claims indicate at least one of the connected objects.

[0062] The following description provides examples and is not intended to limit the scope, applicability, or configuration set forth in the claims. Changes may be made to the function and arrangement of the elements discussed without departing from the spirit and scope of this disclosure. Various procedures or components may be appropriately omitted, substituted, or added to the examples. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to certain examples may be combined in other examples.

[0063] Please refer to Figure 1 The communication method provided in this embodiment of the invention, when applied to the terminal side, includes:

[0064] Step 11: Receive 5G data packets.

[0065] The received data can be used for 5G satellite access communication. The satellite interconnection gateway is connected to the control plane and user plane of the core network through the N2 and N3 interfaces, respectively. At the same time, the access interconnection function network element provides a secure connection for the control plane and user plane data sent by the user terminal to the network through the non-3GPP access interconnection function access network. The user plane function (UPF) is connected to the data network through the N6 interface to obtain 5G data service.

[0066] Step 12: Perform protocol conversion on the received 5G data packets.

[0067] 5G satellite access gateways supporting N3IWF capabilities use protocol conversion components to perform protocol conversion in the physical layer, data link layer, routing layer and their upper-layer messages, thereby achieving interconnection and interoperability between the 5G core network and the satellite network.

[0068] Step 13: Send the protocol-converted message to the non-3GPP access interoperability network element.

[0069] The protocol-converted message is sent to the interoperability network element to complete functions such as AMF selection, packet encapsulation and decapsulation, and packet inspection. Finally, it is sent to the 5G core network through the Y2 interface.

[0070] The method further includes:

[0071] The performance enhancement proxy PEP determines whether the received service data is a 5G data packet based on the throughput of the service data.

[0072] The Performance Enhancement Proxy (PEP) determines the data type of incoming data packets and measures the data throughput of the current data connection. It then selects between 4G and 5G connection transmission based on whether the data throughput is less than or equal to a throughput threshold, thus ensuring the quality of 5G data service. This effectively solves the problem of high power consumption caused by terminal devices transmitting service data over 5G networks. When the data throughput is high, it utilizes the high transmission speed of the 5G network to transmit service data via a 5G data connection; when the data throughput is low, it utilizes the low power consumption of the 4G network to transmit service data via a 4G data network, without increasing the transmission latency.

[0073] Before performing protocol conversion on the received 5G data packets:

[0074] Step 21: Receive user terminal access request.

[0075] Step 22: Authenticate the user terminal.

[0076] This authentication specifically involves identity verification; only user terminals that pass the identity verification are allowed to access the 5G communication network.

[0077] Step 23: For the authenticated user terminal, filter the received service data to generate 5G data packets.

[0078] Step 24: Send the 5G data packet.

[0079] The communication method also includes logging: providing a unified logging interface for convenient log storage and auditing. The configuration management module implements configuration management functions such as gateway status, site information, terminal status, terminal checks, password modification, gateway configuration, role management, audit logs, and certificate management.

[0080] The communication method further includes encapsulating satellite communication protocols for driving the satellite communication terminal to send and receive short message data via serial communication. Key negotiation is used to achieve key negotiation with the access terminal. Furthermore, key encryption provides functions such as data depackaging and repackaging, data integrity verification, and data encryption / decryption.

[0081] Step 12 also includes: a performance-enhanced proxy (PEP) based on the 5G data service model, which converts satellite data packets and terrestrial data packets to each other.

[0082] Sending the protocol-converted message to the non-3GPP access interoperability network element includes: copying the protocol-converted message and storing it in a high-speed cache, and then sending it to the 5G core network through the non-3GPP access interoperability network element.

[0083] The method further includes: connecting to the control plane CP and user plane UP of the 5G core network through the N2 and N3 interfaces, and providing a secure connection for the user terminal.

[0084] When the performance enhancement agent PEP detects that a data copy is lost, it retransmits the data copy in the cache.

[0085] The non-3GPP access interoperability function network element is used for: AMF selection, packet encapsulation and decapsulation, and packet inspection.

[0086] By implementing the above-described method of the embodiments of the present invention, interconnection technology between satellite and ground 5G core network can be realized, support for performance enhancement proxy based on 5G data service model can be realized, and the performance degradation problems caused by the high bit error rate, time delay, link asymmetry and high interruption rate of existing links can be solved.

[0087] The various methods of embodiments of the present invention have been described above. A network device for implementing the above methods will be further provided below.

[0088] Please refer to Figure 3This invention provides a network device 30 for 5G satellite access, the network device 30 comprising:

[0089] 5G data packet receiving module 31 is used to receive 5G data packets;

[0090] The received data can be used for 5G satellite access communication. The satellite interconnection gateway is connected to the control plane and user plane of the core network through the N2 and N3 interfaces, respectively. At the same time, the access interconnection function network element provides a secure connection for the control plane and user plane data sent by the user terminal to the network through the non-3GPP access interconnection function access network. The user plane function (UPF) is connected to the data network through the N6 interface to obtain 5G data service.

[0091] Protocol conversion module 32 is used to convert the received 5G data packets into protocols.

[0092] 5G satellite access gateways supporting N3IWF capabilities use protocol conversion components to perform protocol conversion in the physical layer, data link layer, routing layer and their upper-layer messages, thereby achieving interconnection and interoperability between the 5G core network and the satellite network.

[0093] Non-3GPP access interoperability function network element 33 is used to receive messages after protocol conversion.

[0094] The protocol-converted message is sent to the interoperability network element to complete functions such as AMF selection, packet encapsulation and decapsulation, and packet inspection. Finally, it is sent to the 5G core network through the Y2 interface.

[0095] The method further includes:

[0096] The performance enhancement proxy PEP determines whether the received service data is a 5G data packet based on the throughput of the service data.

[0097] The Performance Enhancement Proxy (PEP) determines the data type of incoming data packets and measures the data throughput of the current data connection. It then selects between 4G and 5G connection transmission based on whether the data throughput is less than or equal to a throughput threshold, thus ensuring the quality of 5G data service. This effectively solves the problem of high power consumption caused by terminal devices transmitting service data over 5G networks. When the data throughput is high, it utilizes the high transmission speed of the 5G network to transmit service data via a 5G data connection; when the data throughput is low, it utilizes the low power consumption of the 4G network to transmit service data via a 4G data network, without increasing the transmission latency.

[0098] Network device 30 also includes: a performance enhancement proxy (PEP) for determining whether received service data is a 5G data packet based on the throughput of service data.

[0099] The Performance Enhancement Proxy (PEP) determines the data type of incoming data packets and measures the data throughput of the current data connection. It then selects between 4G and 5G connection transmission based on whether the data throughput is less than or equal to a throughput threshold, thus ensuring the quality of 5G data service. This effectively solves the problem of high power consumption caused by terminal devices transmitting service data over 5G networks. When the data throughput is high, it utilizes the high transmission speed of the 5G network to transmit service data via a 5G data connection; when the data throughput is low, it utilizes the low power consumption of the 4G network to transmit service data via a 4G data network, without increasing the transmission latency.

[0100] Please refer to Figure 4 The network device 30 provided in this embodiment of the invention further includes:

[0101] Access request receiving module 41 is used to receive user terminal access requests.

[0102] The authentication module 42 authenticates the user terminal.

[0103] This authentication specifically involves identity verification; only user terminals that pass the identity verification are allowed to access the 5G communication network.

[0104] The service data filtering module 43 is used to filter the received service data for the authenticated user terminal in order to generate 5G data packets.

[0105] The 5G data packet sending module 44 sends the 5G data packet.

[0106] The communication method also includes logging: providing a unified logging interface for convenient log storage and auditing. The configuration management module implements configuration management functions such as gateway status, site information, terminal status, terminal checks, password modification, gateway configuration, role management, audit logs, and certificate management.

[0107] The communication method further includes encapsulating satellite communication protocols for driving the satellite communication terminal to send and receive short message data via serial communication. Key negotiation is used to achieve key negotiation with the access terminal. Furthermore, key encryption provides functions such as data depackaging and repackaging, data integrity verification, and data encryption / decryption.

[0108] The protocol conversion module 32 is further used to: perform performance enhancement proxy (PEP) based on the 5G data service model to convert satellite data packets and ground data packets to each other.

[0109] Sending the protocol-converted message to the non-3GPP access interoperability network element includes: copying the protocol-converted message and storing it in a high-speed cache, and then sending it to the 5G core network through the non-3GPP access interoperability network element.

[0110] The method further includes: connecting to the control plane CP and user plane UP of the 5G core network through the N2 and N3 interfaces, and providing a secure connection for the user terminal.

[0111] like Figure 5 As shown, the network device 30 further includes a message copying and storage module 51, which copies and stores the protocol-converted message into a high-speed cache, and sends it to the 5G core network through the non-3GPP access interoperability network element.

[0112] The network device further includes a secure connection module 52, which is used to connect to the control plane CP and user plane UP of the 5G core network through the N2 interface and the N3 interface, and to provide a secure connection for the user terminal.

[0113] The message copying and storage module 51 is further configured to: retransmit the data copy in the cache when the performance enhancement agent PEP detects that a data copy is lost.

[0114] The non-3GPP access interoperability function network element is further used for: AMF selection, packet encapsulation and decapsulation, and packet inspection.

[0115] The network device mentioned is a gateway, more specifically a 5G satellite access gateway.

[0116] It should be noted that the network device in this embodiment is the same as the one described above. Figures 1-2 The devices corresponding to the methods shown are all applicable to the embodiments of the above-described devices, and can achieve the same technical effects. The devices provided by the embodiments of the present invention can implement all the method steps implemented in the above-described method embodiments and can achieve the same technical effects. Therefore, the parts that are the same as those in the method embodiments and the beneficial effects will not be described in detail here.

[0117] Please refer to Figure 6 This is a flowchart illustrating the operation of a 5G satellite access gateway provided in an embodiment of the present invention.

[0118] exist Figure 6In this process, the user terminal connects to the satellite access gateway through the Y1 interface and initiates a terminal access request to the communication module to access the satellite access gateway. Then, the satellite access gateway authenticates the identity of the terminal user through the identity authentication module. After authentication, the data service received by the communication module is filtered by the data filtering module to remove illegal data packets. The filtered data packets are sent to the protocol conversion module. In this module, the mutual conversion between satellite packets and terrestrial packets is completed through PEP based on the 5G data service model. Then, the protocol-converted packets are sent to the N6+N3IWF capability component to complete functions such as AMF selection, packet encapsulation and decapsulation, and packet inspection. Finally, the packets are sent to the 5G core network through the Y2 interface.

[0119] Please refer to Figure 7 This is a schematic diagram of the PEP processing of a 5G satellite access gateway provided in an embodiment of the present invention. Figure 7 In this process, when the PEP receives a data service, it determines whether the data packet is a 5G data service. If so, it marks it as a 5G data packet; otherwise, it marks it as a 4G data packet. Then, it measures the data throughput of the current data connection and determines whether the data throughput exceeds a throughput threshold. If so, it performs protocol conversion on the data packet and transmits the data service through the 5G connection. If not, it marks the 5G data packet as a 4G data packet, performs protocol conversion on the data packet, and transmits the data service through the 4G connection. By determining the data throughput of the current data connection and selecting between 4G and 5G data connections for data transmission, the quality of 5G data service is guaranteed, effectively solving the problem of high power consumption caused by terminal devices transmitting data over the 5G network. When the data throughput is high, the high transmission speed of the 5G network is utilized to transmit data through the 5G data connection; when the data throughput is low, the low power consumption of the 4G network is utilized to transmit data through the 4G data network, without increasing the transmission latency of the data service.

[0120] 5G data transmission based on the 5G data service model features high speed, large capacity, and low latency, offering greater bandwidth and lower latency compared to 4G data transmission, significantly improving communication efficiency. However, using 5G data connections to transmit service data suffers from significant performance degradation. The PEP (Programmable Epitaxy) based on 5G data services proposed in this invention can determine whether to use 4G or 5G data connection by judging the throughput of the current data connection, effectively solving the performance degradation problem caused by the mismatch between data transmission method and data rate.

[0121] Figure 8 This is another schematic diagram of the PEP processing of the 5G satellite access gateway provided in an embodiment of the present invention.

[0122] This invention extends the existing protocol adaptation module in the satellite access gateway, adding PEP capabilities based on a 5G data service model. The user terminal (UE) sends data service packets to the satellite access gateway via the satellite network. Upon receiving the data service packets, the PEP measures the current data throughput, decides whether to use a 4G or 5G data connection, performs mutual conversion between satellite and terrestrial data packets, copies the data packets into a cache, and sends them to the 5G core network. When the PEP detects a data copy loss, it retransmits the cached data copy. Upon receiving an ACK confirmation from the receiver, the existing data copy in the cache is destroyed.

[0123] Figure 9 This is a flowchart illustrating the adaptation process for non-3GPP access interoperability network elements provided in this embodiment of the invention.

[0124] The satellite access gateway proposed in this patent has a lightweight N3IWF capability component adapted for satellite access. This component has the AMF selection function, packet encapsulation and decapsulation function, and packet inspection function of the N3IWF network element (N3IWF capability component).

[0125] The User Equipment (UE) accesses the satellite access gateway (including the N3IWF component) via the Y1 interface. The N3IWF provides the UE with a connection from non-3GPP access to the core network. The UE connects to the control plane and user plane of the core network via N2 and N3 respectively. Simultaneously, the N3IWF provides a secure connection for control plane and user plane data sent by the UE to the network via the satellite access gateway. The UE can select an AMF (Application Management Function) through the N3IWF capability component and connect to the AMF to complete location registration and temporary identifier allocation. When the user initiates a Protocol Data Unit (PDU) connection establishment request, the AMF selects an appropriate Session Management Function (SMF) for the UE. The SMF sends a registration response message to the UE through the AMF, and the UE replies with a registration completion message to the SMF through the AMF. The SMF can handle user PDU session establishment, modification, and deletion requests, and establish a PDU connection between the UE and the UPF (User Platform Provider). The SMF sends a PDU session request to the UE through the AMF, carrying PDU session parameters such as session identifier, IP address, data network name, and routing rule information or QoS information. The UPF can connect to the data network (DN) via the N6 interface to obtain 5G data services provided by the operator and provide user plane processing functions for the UE, including data forwarding and QoS enforcement. The DN sends downlink protocol data units (PDUs) to the UPF or receives PDUs sent by the UE from the UPF. The UPF can perform uplink and downlink data transmission with the N3IWF capability component via the N3 interface. The N3IWF capability component can determine the legitimacy of the request through application detection based on service data flow templates. If the request is illegitimate, it will be directly intercepted. If the request is legitimate, the data packet will be accepted to complete the decapsulation and encapsulation of the data packet and to transmit data services with the UE.

[0126] This invention also provides a base station, characterized in that it includes: a processor, a memory, and a program stored in the memory and executable on the processor. When the program is executed by the processor, it implements the steps of the method described above and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0127] This invention also provides a computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the method described above and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0128] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0129] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0130] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0131] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of the embodiments of the present invention, depending on actual needs.

[0132] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0133] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0134] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A communication method applied to satellite access scenarios, characterized in that, The communication method includes: Receive business data; The performance-enhanced proxy PEP determines whether the received service data is a 5G data packet based on the throughput of the service data. If it is determined that the received service data is a 5G data packet, then the received 5G data packet is converted to a different protocol. The protocol-converted message is sent to the non-3GPP access interoperability network element.

2. The method according to claim 1, characterized in that, The method further includes: before performing protocol conversion on the received 5G data packets: Receive user terminal access requests; Authenticate the user terminal; For the authenticated user terminal, the received service data is filtered to generate 5G data packets; Send the 5G data packet.

3. The method according to claim 1, characterized in that, The protocol conversion of the received 5G data packets includes: The performance-enhanced proxy (PEP) based on the 5G data service model converts satellite data packets and terrestrial data packets to each other.

4. The method according to claim 1, characterized in that, Sending the protocol-converted message to the non-3GPP access interoperability network element includes: The message converted by the protocol is copied and stored in a high-speed cache, and then sent to the 5G core network through the non-3GPP access interoperability function network element.

5. The method according to claim 4, characterized in that, The method further includes: It connects to the control plane (CP) and user plane (UP) of the 5G core network via the N2 and N3 interfaces, and provides a secure connection for user terminals.

6. The method according to claim 4, characterized in that, When the performance enhancement agent PEP detects that a data copy is lost, it retransmits the data copy in the cache.

7. The method according to claim 1, characterized in that, The non-3GPP access interoperability function network element is used for: AMF selection, packet encapsulation and decapsulation, and packet inspection.

8. A network device, characterized in that, The network device is used for 5G satellite access, and the network device includes: The data message receiving module is used to receive business data; The Performance Enhancement Proxy (PEP) is used to determine whether the received service data is a 5G data packet based on the throughput of the service data. The protocol conversion module is used to perform protocol conversion on the received 5G data packets if it is determined that the received service data is a 5G data packet. Non-3GPP access interoperability network elements are used to receive messages after protocol conversion.

9. The network device according to claim 8, characterized in that, The network device also includes: The access request receiving module is used to receive access requests from user terminals. The authentication module authenticates the user terminal; The service data filtering module is used to filter the received service data for the authenticated user terminal in order to generate 5G data packets. The 5G data packet sending module sends the 5G data packet.

10. The network device according to claim 8, characterized in that, The protocol conversion module is further used for: The performance-enhanced proxy (PEP) based on the 5G data service model converts satellite data packets and terrestrial data packets to each other.

11. The network device according to claim 8, characterized in that, The network device also includes: The message copying and storage module copies and stores the protocol-converted message into a high-speed cache, and sends it to the 5G core network through the non-3GPP access interoperability function network element.

12. The network device according to claim 11, characterized in that, The network device also includes: The secure connection module is used to connect to the control plane (CP) and user plane (UP) of the 5G core network via the N2 and N3 interfaces, and to provide a secure connection for user terminals.

13. The network device according to claim 11, characterized in that, The message copying and storage module is further used for: When the performance enhancement agent PEP detects that a data copy is lost, it retransmits the data copy in the cache.

14. The network device according to claim 8, characterized in that, The non-3GPP access interoperability function network element is further used for: AMF selection, packet encapsulation and decapsulation, and packet inspection.

15. The network device according to claim 8, characterized in that, The network device mentioned is a gateway.

16. A base station, characterized in that, include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the method as described in any one of claims 1 to 7.

17. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the method as described in any one of claims 1 to 7.

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