CN113825254A

CN113825254A - Communication method, device, system and storage medium

Info

Publication number: CN113825254A
Application number: CN202111391334.2A
Authority: CN
Inventors: 孙少凡; 钟华; 张博; 陶娟
Original assignee: China Star Network Innovation Research Institute Co ltd
Current assignee: China Star Network Innovation Research Institute Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2021-12-21
Anticipated expiration: 2041-11-23
Also published as: CN113825254B

Abstract

The application discloses a communication method, a device, a system and a storage medium, and relates to the technical field of communication. A gateway station is deployed on the ground by deploying a satellite-borne base station and a satellite-borne UPF which correspond to a first terminal and a second terminal respectively and deploying a satellite-borne router in a low earth orbit satellite, so that a complete communication system is formed. Receiving a communication request from a first terminal to communicate with a second terminal in a system; determining a communication scene type between the first terminal and the second terminal based on the communication request; and executing the point-to-point communication operation between the first terminal and the second terminal based on the communication scene type. Finally, the aim of providing point-to-point voice or data service communication between the same satellite and satellite terminals in different satellite coverage areas or between the satellite terminal and a ground network terminal is achieved, and the communication requirements of users on high quality and high safety can be fully met.

Description

Communication method, device, system and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method, apparatus, system, and storage medium.

Background

With the rapid development of information communication technology and the continuous abundance of internet applications, internet access has become a hard demand for people's daily life and work. However, in remote areas such as aviation, oceans, mountainous areas and the like, due to the fact that ground network deployment is difficult and high in cost, users in the areas have the situation that internet access experience is poor or even internet access cannot be achieved, and an effective way is urgently needed to be found to provide internet access service in a global scope, so that the digital gap between different areas is reduced.

Disclosure of Invention

The application provides a communication method and a communication device, which are used for achieving the purpose of providing point-to-point voice or data service communication among different users.

In a first aspect, an embodiment of the present application provides a communication system, including a first low earth orbit satellite and a gateway station, where:

the first low earth orbit satellite is used for receiving a communication request sent by a first terminal, determining a communication scene type between the first terminal and the second terminal based on the communication request, and executing a point-to-point communication operation between the first terminal and the second terminal based on the communication scene type; wherein the communication scenario type comprises any one of the following types: the method comprises the following steps of communication in the same wave position of the same satellite, communication among different wave positions of the same satellite, communication among different satellites, and communication between a satellite terminal and a ground network terminal;

if the communication scene type is communication between the satellite terminal and the ground network terminal, the gateway station is used for transmitting communication data between the first terminal and the second terminal.

In some embodiments, the first low earth orbit satellite has a first on-board UPF and a first on-board base station deployed therein, wherein:

the first satellite-borne base station is used for sending the communication request to the gateway station;

the gateway station is configured to establish a communication path between a first satellite-borne UPF and a second satellite-borne UPF based on the communication request if the first satellite-borne UPF corresponding to the first terminal is different from the second satellite-borne UPF corresponding to the second terminal; the communication path is used for transmitting communication data between the first terminal and the second terminal.

In some embodiments, a core network UPF, a core network control plane network element, and an IMS are deployed in the gateway station, wherein:

the core network UPF is configured to receive the communication request sent by the first satellite-borne base station, and send the communication request to the IMS;

the IMS is used for generating a control instruction based on the communication request and sending the control instruction to the core network UPF;

the core network UPF is further configured to send the control instruction to a second satellite-borne base station, and the second satellite-borne base station is deployed in a satellite where the second terminal is located;

the second satellite-borne base station is used for sending the control instruction to the second terminal and receiving response information of the second terminal aiming at the control instruction; and sending the response information to the core network UPF;

the core network UPF is also used for transmitting the response information to the IMS;

the IMS is further configured to send a notification for creating a path to the core network control plane network element based on the response information;

the core network control plane network element is configured to send a path creation instruction to the first satellite-borne UPF and the second satellite-borne UPF based on the notification for creating a path, and receive tunnel endpoint information of the first satellite-borne UPF sent by the first satellite-borne UPF and tunnel endpoint information of the second satellite-borne UPF sent by the second satellite-borne UPF; and sending the tunnel endpoint information of the first satellite-borne UPF to the second satellite-borne UPF, and sending the tunnel endpoint information of the second satellite-borne UPF to the first satellite-borne UPF.

In some embodiments, the first satellite-borne base station of the first low-earth satellite is configured to receive an access request of the first terminal and send the access request to a core network control plane network element of the gateway station before receiving a communication request for communication between the first terminal and the second terminal;

the core network control plane network element is configured to notify a core network UPF of the gateway station to create a user plane context of the first terminal;

the core network UPF is configured to send the user plane context to the core network control plane network element;

the core network control plane network element is further configured to send feedback information for the access request to the first satellite-borne base station based on the user plane context;

the first satellite-borne base station is further configured to send the feedback information to the first terminal.

In some embodiments, the first terminal is specifically configured to transmit, if the communication scene type is communication in the same wave location of the same satellite, communication data between the first terminal and the second terminal by using a beam in the wave location corresponding to the first terminal.

In some embodiments, the first terminal and the second terminal are specifically configured to determine a beam in a wave position corresponding to the second terminal if the communication scene type is communication in different wave positions of the same satellite; and transmitting communication data between the first terminal and the second terminal by using the wave beam in the wave position corresponding to the first terminal and the wave beam in the wave position corresponding to the second terminal.

In some embodiments, the second terminal is specifically configured to determine a target satellite where the second terminal is located if the communication scene type is communication between different satellites; and transmitting communication data between the first terminal and the second terminal through an inter-satellite link between the first terminal and a target satellite where the second terminal is located.

In some embodiments, the first terminal and the second terminal are specifically configured to transmit the communication data between the first terminal and the second terminal by using a gateway station connected to the first low-earth-orbit satellite if the communication scene type is communication between the satellite terminal and a ground network terminal.

In a second aspect, an embodiment of the present application provides a communication method, which is applied to a first low earth orbit satellite, and the method includes:

receiving a communication request of a first terminal for communicating with a second terminal;

determining a communication scene type between the first terminal and the second terminal based on the communication request, wherein the communication scene type comprises any one of the following types: the method comprises the following steps of communication in the same wave position of the same satellite, communication among different wave positions of the same satellite, communication among different satellites, and communication between a satellite terminal and a ground network terminal;

and executing the point-to-point communication operation between the first terminal and the second terminal based on the communication scene type.

In some embodiments, said performing peer-to-peer communication operations between said first terminal and said second terminal based on said communication scenario type comprises:

and if the communication scene type is the same satellite and same wave position communication, adopting a wave beam in a wave position corresponding to a first terminal to transmit communication data between the first terminal and a second terminal.

if the communication scene type is communication between different wave positions of the same satellite, determining a wave beam in a wave position corresponding to the second terminal;

and transmitting communication data between the first terminal and the second terminal by adopting the wave beam in the wave position corresponding to the first terminal and the wave beam in the wave position corresponding to the second terminal.

if the communication scene type is communication among different satellites, determining a target satellite where the second terminal is located;

and transmitting communication data between the first terminal and the second terminal through an inter-satellite link between the first terminal and a target satellite where the second terminal is located.

and if the communication scene type is communication between the satellite terminal and the ground network terminal, transmitting communication data between the first terminal and the second terminal by adopting a gateway station connected with the first low-earth orbit satellite.

In some embodiments, a first on-board UPF (User Plane Function) is deployed in the first low earth orbit satellite, and the performing, for any communication scenario type, a peer-to-peer communication operation between the first terminal and the second terminal includes:

if a first satellite-borne UPF corresponding to the first terminal is different from a second satellite-borne UPF corresponding to the second terminal, establishing a communication path between the first satellite-borne UPF and the second satellite-borne UPF through a gateway station;

and transmitting communication data between the first terminal and the second terminal by adopting the communication path.

In some embodiments, a first satellite-based base station is further deployed in the first low earth orbit satellite, a core network UPF, a core network control plane network element, and an IMS (IP Multimedia Subsystem) are deployed in the gateway station, and establishing, by the gateway station, a communication path between the first satellite-based UPF and the second satellite-based UPF includes:

sending the communication request to the core network UPF of the gateway station through the first satellite-borne base station, so that the core network UPF sends the communication request to the IMS, the IMS generates a control instruction and then sends the control instruction to the core network UPF, the core network UPF sends the control instruction to a second satellite-borne base station of the second terminal, the second satellite-borne base station sends the control instruction to the second terminal, and the second satellite-borne base station is deployed in a satellite where the second terminal is located;

receiving a path creation instruction sent by a core network control plane network element in the gateway station;

based on the path creation instruction, sending the tunnel endpoint information of the first satellite-borne UPF to a core network control plane network element of the gateway station, so that the core network control plane network element sends the tunnel endpoint information of the first satellite-borne UPF to the second satellite-borne UPF;

and receiving the tunnel endpoint information of the second satellite-borne UPF sent by the core network control plane network element.

In some embodiments, before the receiving a communication request for communication between the first terminal and the second terminal, the method further comprises:

receiving an access request of the first terminal based on a first satellite-borne base station of the first low earth orbit satellite;

sending the access request to a core network control plane network element of the gateway station through the first satellite-borne base station, so that the core network control plane network element notifies the core network UPF to create a user plane context of the first terminal;

receiving feedback information aiming at the access request sent by the core network control plane network element; and the number of the first and second electrodes,

and sending the feedback information to the first terminal.

In some embodiments, the first on-board UPF is further configured to charge the first terminal.

In a third aspect, an embodiment of the present application provides a communication method, which is applied to a second low earth orbit satellite, and the method includes:

receiving communication data transmitted by a first terminal and transmitted by a first low earth orbit satellite through an inter-satellite link between the first low earth orbit satellite and the first low earth orbit satellite;

sending the communication data of the first terminal to a second terminal;

receiving communication data of the second terminal;

sending the communication data of the second terminal to the first low earth orbit satellite through the inter-satellite link so that the first low earth orbit satellite sends the communication data of the second terminal to the first terminal;

the inter-satellite link is adopted when the first low earth orbit satellite determines that the communication scene types of the first terminal and the second terminal are communication between different satellites.

In some embodiments, a core network control plane network element, a core network UPF, an IMS are deployed in the gateway station; a second satellite-borne base station is deployed in the second low earth orbit satellite; before the receiving, through an inter-satellite link with a first low earth orbit satellite, communication data transmitted by a first terminal transmitted by the first low earth orbit satellite, the method further includes:

receiving a control instruction sent by a core network UPF of a gateway station through the second satellite-borne base station, wherein the control instruction is generated by the IMS based on a communication request of the first terminal;

sending the control instruction to the second terminal;

receiving response information of the second terminal aiming at the control instruction;

sending the response information to the core network UPF so that the core network UPF transmits the response information to the IMS;

receiving a path creation instruction of the core network control plane network element through the second satellite-borne UPF;

and sending the tunnel endpoint information of the second satellite-borne UPF to the core network control plane network element through the second satellite-borne UPF, so that the core network control plane network element sends the tunnel endpoint information of the second satellite-borne UPF to the first satellite-borne UPF of the first low-orbit satellite.

In a fourth aspect, an embodiment of the present application provides a communication method, which is applied to a gateway station, and the method includes:

when the communication scene types of the first terminal and the second terminal are the designated types, sending the communication data sent by the first terminal to the second terminal; sending the communication data sent by the second terminal to the first terminal;

the specified type is any one of the following: communication among different satellites, communication among satellite terminals and earth network terminals; the communication scenario type is determined by a first low earth orbit satellite based on a communication request of the first terminal.

In some embodiments, the method further comprises:

and if the first satellite-borne UPF corresponding to the first terminal is different from the second satellite-borne UPF corresponding to the second terminal, establishing a communication path between the first satellite-borne UPF and the second satellite-borne UPF.

In some embodiments, the first terminal corresponds to a first satellite-borne base station and the second terminal corresponds to a second satellite-borne base station; a core network UPF, a core network control plane network element, and an IMS are deployed in the gateway station, and establishing a communication path between the first satellite-borne UPF and the second satellite-borne UPF includes:

receiving a communication request sent by the first satellite-borne base station through the core network UPF; the communication request is used for requesting the first terminal and the second terminal to communicate;

sending the communication request to the IMS through the core network UPF so that the IMS generates a control instruction;

sending the control instruction to the second satellite-borne base station through the core network UPF so that the second satellite-borne base station sends the control instruction to the second terminal;

receiving, by the second satellite-borne base station, response information of the second terminal to the control instruction, so that the second satellite-borne base station sends the response information to the core network UPF;

receiving the response information through the core network UPF, and sending the response information to the IMS;

sending a notification for creating a path to the core network control plane network element based on the response information through the IMS;

sending, by the core network control plane network element, a path creation instruction to the first satellite-borne UPF and the second satellite-borne UPF based on the notification for creating a path;

receiving, by the core network control plane network element, the tunnel endpoint information of the first satellite-borne UPF sent by the first satellite-borne UPF, and receiving the tunnel endpoint information of the second satellite-borne UPF sent by the second satellite-borne UPF;

and sending the tunnel endpoint information of the first satellite-borne UPF to the second satellite-borne UPF through the core network control plane network element, and sending the tunnel endpoint information of the second satellite-borne UPF to the first satellite-borne UPF.

In a fifth aspect, an embodiment of the present application provides a first low earth orbit satellite, including:

the first receiving module is used for receiving a communication request of a first terminal for communicating with a second terminal;

a scene determining module, configured to determine a communication scene type between the first terminal and the second terminal based on the communication request, where the communication scene type includes any one of the following types: the method comprises the following steps of communication in the same wave position of the same satellite, communication among different wave positions of the same satellite, communication among different satellites, and communication between a satellite terminal and a ground network terminal;

a communication module, configured to perform a peer-to-peer communication operation between the first terminal and the second terminal based on the communication scenario type.

In a sixth aspect, an embodiment of the present application provides a second low earth orbit satellite, including:

the second receiving module is used for receiving communication data transmitted by a first terminal and transmitted by a first low earth orbit satellite through an inter-satellite link between the second receiving module and the first low earth orbit satellite;

the first sending module is used for sending the communication data of the first terminal to a second terminal;

the second receiving module is further configured to receive communication data of the second terminal;

the first sending module is further configured to send the communication data of the second terminal to the first low earth orbit satellite through the inter-satellite link, so that the first low earth orbit satellite sends the communication data of the second terminal to the first terminal;

In a seventh aspect, an embodiment of the present application provides a gateway station, including:

the second sending module is used for sending the communication data sent by the first terminal to the second terminal when the communication scene types of the first terminal and the second terminal are the specified types; sending the communication data sent by the second terminal to the first terminal;

In an eighth aspect, an embodiment of the present application further provides an electronic device, where the electronic device includes at least a processor and a memory, and the processor is configured to implement the steps of any of the communication methods when executing a computer program stored in the memory.

In a ninth aspect, the present invention further provides a computer-readable storage medium, which stores a computer program, and the computer program, when executed by a processor, implements the steps of any of the communication methods described above.

The beneficial effects of the embodiment of the application are as follows: in the embodiment of the application, a gateway station is deployed on the ground by deploying a satellite-borne base station, a satellite-borne UPF and a satellite-borne router, which correspond to a first terminal and a second terminal respectively, and a core network UPF, a core network control plane network element and an IMS are deployed in the gateway station at the same time, so that a complete communication system is formed. The method comprises the steps of receiving a communication request of a first terminal requesting to communicate with a second terminal in the system, determining the communication scene type between the first terminal and the second terminal according to the communication request, and executing peer-to-peer communication operation between the first terminal and the second terminal according to the determined communication scene type. Finally, the aim of providing point-to-point voice or data service communication between the same satellite and satellite terminals in different satellite coverage areas or between the satellite terminal and a ground network terminal is achieved, and the communication requirements of users on high quality and high safety are fully met.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a low earth orbit satellite constellation system for point-to-point communication according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of a satellite with a plurality of onboard UPFs according to an embodiment of the present application;

fig. 3 is a schematic diagram of a satellite with an onboard UPF deployed under a satellite according to an embodiment of the present application;

fig. 4 is a schematic flowchart of establishing a communication path according to an embodiment of the present application;

fig. 5 is a flowchart illustrating peer-to-peer voice communication according to an embodiment of the present application;

fig. 6 is a block diagram of a first low earth orbit satellite according to an embodiment of the present disclosure;

fig. 7 is a block diagram of a second low earth orbit satellite according to an embodiment of the present application;

fig. 8 is a block diagram of a gateway station according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. The embodiments described are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Also, in the description of the embodiments of the present application, "/" indicates an inclusive meaning unless otherwise specified, for example, a/B may indicate a or B; "and/or" in the text is only an association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B may mean: three cases of a alone, a and B both, and B alone exist, and in addition, "a plurality" means two or more than two in the description of the embodiments of the present application.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the features, and in the description of embodiments of the application, unless stated otherwise, "plurality" means two or more.

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

1) Network elements, or network devices, include, for example, access network elements, or access network devices, such as base stations (e.g., access points) and user plane function network elements.

A base station may refer to, among other things, a device in an access network that communicates over the air-interface, through one or more cells, with wireless terminal devices. The network element may be configured to interconvert received air frames and Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The network element may also coordinate the management of attributes for the air interface. For example, the network element may include an evolved Node B (NodeB or eNB or e-NodeB) in a Long Term Evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-a), or may also include a next generation Node B (gNB) in a fifth generation mobile communication technology (5G) New Radio (NR) system, or may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a cloud access network (cloud ran) system, which is not limited in the embodiments of the present application.

The user plane functional network element, in a fourth generation mobile communication technology (4G) system, for example, includes a Serving Gateway (SGW) and a packet data network gateway (PDN-GW), and in a 5G system, for example, includes an UPF, which is mainly responsible for connecting to an external network. It is considered that UPF in the 5G system corresponds to the combination of SGW and PDN-GW in the 4G LTE system.

2) A terminal is a device that can provide voice and/or data connectivity to a user. For example, the terminal device includes a handheld device, an in-vehicle device, and the like having a wireless connection function. Currently, the terminal device may be: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like.

Figure 1 shows a low earth orbit satellite constellation system for point-to-point communication. As shown in fig. 1, the low-earth satellite constellation system is mainly composed of satellite terminals, low-earth satellites and ground gateway stations.

A satellite terminal: the system is communicated with a served satellite through a user link, is mainly used for sending a communication request and responding the communication request, supports various forms such as handholding, vehicle-mounted, ship-mounted, airborne and the like, and supports data and/or voice services.

Low earth orbit satellite: satellite-borne base stations, satellite-borne UPFs (Sat-UPFs) and inter-satellite routers are deployed on the satellites.

The satellite-borne base station, the Sat-UPF and the inter-satellite router are independent modules, and the specific functions and the connection relation are as follows:

(1) satellite-borne base stations: the base station/access network adopts a 5G access network protocol configured based on the characteristics of a low-orbit satellite system, relates to a physical layer (PHY), a media access control layer (MAC), a radio link control layer (RLC), a Packet Data Convergence Protocol (PDCP), a Radio Resource Control (RRC) and the like, supports CU/DU separation, and is mainly used for receiving and sending communication data and realizing the access of a terminal.

(2) Satellite-borne UPF: the system is designed based on a 5G UPF function, has the capabilities of signaling interface processing, forwarding processing, inter-satellite tunnel routing and the like, and has the functions of simplifying charging, Qos (Quality of Service) strategies and the like according to Service characteristics.

(3) The inter-satellite router: and the system has protocol conversion capability and is used for connecting different satellites.

The satellite-borne base station and the satellite-borne UPF transmit various beam information and satellite-borne base station interaction information; terminal data information and control signaling are transmitted between the satellite-borne UPF and the satellite-borne route; different satellite-borne routers are connected through laser or microwave (the specific connection mode is not limited), and various information carried by inter-satellite links, such as signaling and data information transmitted by beams, satellite remote measurement and control information, routing tables and the like, is mainly transmitted. Meanwhile, when the satellite-borne router is used for routing, a corresponding routing algorithm is adopted to determine a routing table.

The satellite communicates with the terminal through a user link, the terminal transmits a communication request to a satellite-borne base station of the low-orbit satellite through a user uplink, and the satellite-borne base station transmits user information to the terminal through a user downlink. The satellite communicates with the ground gateway station via a feeder link and the satellite communicates with neighboring satellites via an inter-satellite link. Meanwhile, the satellite forms a certain coverage area on the ground, and the coverage area of the satellite on the ground can be divided into an appropriate number of wave positions according to a set rule.

Ground gateway station: and communicates with satellites in view over feeder links to transmit and receive relevant signals. The core network control plane network element is deployed in the ground gateway station, mainly completes the functions of service processing, routing switching, mobility management and the like, and provides interconnection and intercommunication with other ground networks. Similar to the ground 5G system, the core network control plane network element of the system includes an access and mobility management function (AMF), a Session Management Function (SMF), a Network Slice Selection Function (NSSF), an authentication server function (AUSF), a Policy Control Function (PCF), etc., and implements packet domain voice service through an IP Multimedia Subsystem (IMS). Referring to the division of the 5G core network, the core network of the system still adopts a control plane and forwarding plane separation architecture design and is divided into three parts, namely a core network control plane network element, a core network UPF and an IMS.

Performing point-to-point operations between different terminals requires determining how to achieve this based on the type of communication between the two terminals. Therefore, the present application provides a communication method, which is described in detail below.

In some embodiments, the first terminal sends a communication request to a satellite-based base station of satellite one, the communication request requesting communication between the first terminal and the second terminal. And determining the communication scene type between the first terminal and the second terminal according to the communication request. And executing point-to-point communication operation between the satellite terminals according to the determined communication scene type.

The communication scene type is one of a type set, wherein the types in the type set include: the method comprises the following steps of communication in the same wave position of the same satellite, communication between different wave positions of the same satellite, communication between different satellites, and communication between a satellite terminal and a ground network terminal.

In some embodiments, if the communication scene type is communication in the same wave position of the same satellite, the beam in the wave position corresponding to the first terminal is used for transmitting the communication data between the first terminal and the second terminal.

The first satellite-borne base station of the first satellite directly transmits the received communication data to the second terminal of the same satellite at the same wave position after receiving the communication request of the first terminal, and if the second terminal of the first terminal requesting communication is determined to be within the range covered by the same wave position of the same satellite, the point-to-point communication between the first terminal and the second terminal is completed.

In some embodiments, if the communication scene type is communication between different wave positions of the same satellite, it is necessary to determine a beam in the wave position corresponding to the second terminal, and transmit communication data between the first terminal and the second terminal by using the beam in the wave position corresponding to the second terminal.

The point-to-point communication between the first terminal and the second terminal can be achieved by the satellite-borne base station of the first satellite receiving the communication request of the first terminal, if it is determined that the second terminal, which is requested to communicate by the first terminal, is within the coverage range of different wave positions of the same satellite, the first terminal transmitting the communication data to the satellite-borne base station of the first satellite through the user uplink, the satellite-borne base station of the first satellite flexibly scheduling the wave beam in the wave position corresponding to the second terminal to establish the user downlink, and transmitting the communication data to the second terminal through the user downlink.

In some embodiments, if the communication scene type is communication between different satellites, it is necessary to determine a target satellite where the second terminal is located, and transmit communication data between the first terminal and the second terminal through an inter-satellite link between the first terminal and the target satellite where the second terminal is located.

The implementation may be that, after the satellite-borne base station of the first satellite receives the communication request of the first terminal, if it is determined that the second terminal, which the first terminal requests to communicate, is in the coverage range of different satellites, the first terminal transmits communication data to the satellite-borne base station of the first satellite through the user uplink, the satellite-borne base station of the first satellite transmits the communication data to the satellite-borne UPF and the satellite-borne base station of the target satellite covering the second terminal through the satellite-borne UPF and the inter-satellite link between the first satellite and the target satellite determined according to the routing policy, the target satellite schedules a corresponding beam to serve the second terminal, and the communication data is transmitted to the second terminal through the user downlink. Therefore, the first terminal transmits uplink data to the first satellite in the communication process, and then the uplink data is transmitted to the target satellite by the first satellite and transmitted to the second terminal by the target satellite. Similarly, the data sent by the second terminal to the first terminal is forwarded to the first terminal through the destination satellite and the satellite, so that the point-to-point communication between the first terminal and the second terminal is completed.

In some embodiments, if the communication scene type is communication between a satellite terminal and a ground network terminal, a gateway station connected with a first low-earth orbit satellite is adopted to transmit communication data between the first terminal and the second terminal.

The first satellite-borne base station transmits the received communication data to the gateway station connected with the first satellite through the feeder link if the second terminal requesting communication of the first terminal is determined to be the ground network terminal after receiving the communication request of the first terminal, and the gateway station connected with the first satellite transmits the communication data to the destination gateway station corresponding to the ground network terminal or the core network where the ground network terminal is located according to the address of the ground network terminal, and is connected with the ground network terminal through the core network where the ground network terminal is located for transmission, so that point-to-point communication between the first terminal and the ground network terminal is completed.

In some embodiments, a satellite-borne UPF is deployed in the first low-earth orbit satellite, and for different communication scene types, if a first satellite-borne UPF corresponding to the first terminal is different from a second satellite-borne UPF corresponding to the second terminal, a communication path between the first satellite-borne UPF and the second satellite-borne UPF is established through the gateway station, and the communication path is adopted to transmit communication data between the first terminal and the second terminal, so as to complete point-to-point communication between the first terminal and the second terminal.

The first satellite-borne UPF corresponding to the first terminal and the second satellite-borne UPF corresponding to the second terminal may be different in two situations:

first, as shown in fig. 2, the first terminal and the second terminal are under the same satellite, and then the satellite-based UPFs of the first terminal and the second terminal are both deployed under the same satellite, that is, a plurality of satellite-based UPFs are deployed under the same satellite.

Second, as shown in fig. 3, if the first terminal is under a first low-earth orbit satellite and the second terminal is under a second low-earth orbit satellite, the first satellite-borne UPF corresponding to the first terminal is deployed in the first low-earth orbit satellite, and the second satellite-borne UPF corresponding to the second terminal is deployed in the second low-earth orbit satellite, that is, one satellite-borne UPF is deployed under each low-earth orbit satellite.

In both cases, a communication path needs to be established through the gateway station to transmit communication data between the first terminal and the second terminal. The manner of establishing the communication path may be the same, and the following manner for establishing the communication path to complete the peer-to-peer communication in the second case may be specifically described with reference to fig. 4:

step E1: the first terminal sends an access request to the first satellite-borne base station.

Step E2: and the first satellite-borne base station generates a relevant instruction based on the received access request and sends the relevant instruction to the core network control plane network element.

Step E3: and the core network control plane network element generates a first control instruction based on the received access request and sends the first control instruction to the core network UPF.

The first control instruction is used for informing the core network UPF to create the user plane context.

Step E4: and the core network UPF creates a user plane context based on the received first control instruction and feeds back the user plane context to the core network control plane network element.

Step E5: and the core network control plane network element sends the feedback information aiming at the access request to the first terminal through the first satellite-borne base station until the first terminal finishes the access.

Step E6: the first terminal initiates a communication request with the second terminal, and the communication request is transmitted to the IMS through the first satellite-borne base station and the core network UPF.

Specifically, the first terminal sends a communication request to the first satellite-borne base station, the first satellite-borne base station sends the communication request to the core network UPF after receiving the communication request, and then the core network UPF transmits the communication request to the IMS.

Step E7: and the IMS generates a second control instruction based on the received communication request, and sends the generated second control instruction to the second terminal through the core network UPF and the second satellite-borne base station.

The IMS may be implemented such that the IMS sends the second control instruction to the core network UPF, and then the core network UPF sends the second control instruction to the second satellite-borne base station, and the second satellite-borne base station sends the second control instruction to the second terminal. Wherein the second control instruction is used for informing the second terminal that the second terminal knows that the terminal sends the communication request to the second terminal. And the second satellite-borne base station is deployed at the satellite where the second terminal is located.

Step E8: the second terminal sends response information based on the received second control instruction, and the response information is transmitted to the first terminal through the second satellite-borne base station, the core network UPF, the IMS and the first satellite-borne base station.

The second terminal sends the response information to the second satellite-borne base station, the second satellite-borne base station sends the response information to the core network UPF, the core network UPF sends the response information to the IMS, the IMS sends the response information to the first satellite-borne base station, and finally the first satellite-borne base station sends the response information to the first terminal, so that the first terminal can send the response information fed back by the second terminal to continue the communication operation.

Step E9: and the IMS informs a core network control plane network element, inserts user load for the first terminal and the second terminal and creates a special Qos flow.

In some embodiments, the IMS, while sending the notification for creating the path to the core network control plane network element based on the response message, notifies the core network control plane network element to insert the user bearer and create the dedicated Qos flow, that is, create a dedicated session, so as to facilitate transmission of communication data in subsequent communication operations.

Step E10: and the core network control plane network element sends a user plane path creation instruction to the first satellite-borne UPF and the second satellite-borne UPF based on the information sent by the IMS.

Step E11: and the first satellite-borne UPF sends the tunnel endpoint information of the first satellite-borne UPF to the core network control plane network element based on the user plane path creation instruction.

Step E12: and the second satellite-borne UPF sends the tunnel endpoint information of the second satellite-borne UPF to the core network control plane network element based on the user plane path creation instruction.

Step E13: and the core network control plane network element sends the tunnel endpoint information of the first satellite-borne UPF to the second satellite-borne UPF, and simultaneously sends the tunnel endpoint information of the second satellite-borne UPF to the first satellite-borne UPF.

Therefore, through the steps, the connection between the first satellite-borne UPF and the second satellite-borne UPF can be realized, so that the first terminal and the second terminal can directly carry out point-to-point voice or data service communication.

To further understand the manner in which peer-to-peer communication is accomplished by establishing communication paths through the gateway stations, a flow diagram for peer-to-peer voice communication is shown in fig. 5.

In step 501, a satellite terminal accesses a core network control plane network element through a satellite-borne base station of a satellite one.

In some embodiments, a first satellite-based base station is also deployed in the first low-earth orbit satellite, and a core network UPF, a core network control plane network element, and an IMS are deployed in the gateway station. The first terminal cannot be directly connected to the core network control plane network element in the gateway station, so that the first terminal first sends an access request to the first satellite-borne base station, and the first satellite-borne base station performs related processing after receiving the access request sent by the first terminal, and sends the access request to the core network control plane network element of the gateway station, so that in step 502, the core network control plane network element notifies the core network UPF to create the user plane context of the first terminal. At this time, the first terminal is connected with the gateway station core network control plane network element, and the following operations are conveniently executed.

The first satellite-borne UPF is also used for carrying out call charging between the first terminal and the second terminal on the first terminal.

In step 503, the first terminal initiates a call, and the control command reaches the second terminal through the first satellite-borne base station, the core network UPF, the IMS, the core network UPF, and the second satellite-borne base station. The second terminal responds.

In some embodiments, the first terminal initiates a communication request, the communication request requesting the first terminal and the second terminal to communicate; the communication request is sent to a core network UPF of the gateway station through the first satellite-borne base station, the received communication request is sent to the IMS through the core network UPF, so that the IMS generates a control instruction, the generated control instruction is sent to the core network UPF, the core network UPF sends the received control instruction to a second satellite-borne base station corresponding to the second terminal, the second satellite-borne base station sends the control instruction to the second terminal, and the second terminal responds to the received control instruction and sends response information. And the second satellite-borne base station is deployed at the satellite where the second terminal is located.

In step 504, the IMS domain notifies the core network control plane network element to insert a satellite user bearer for the user and create a dedicated Qos flow.

In some embodiments, the second terminal sends response information for the control instruction, and transmits the response information to a second satellite-borne base station corresponding to the second terminal, and the second satellite-borne base station sends the response information to the first terminal via the core network UPF, the IMS, the first satellite-borne base station after receiving the response information. After receiving the response message, the IMS notifies the core network control plane network element to insert the user bearer and create a dedicated Qos flow. Wherein, the user bearer can be understood as a PDU session.

The core network control plane network element creates a PDU session for the communication based on the notification for creating a path, and at the same time, sends a user plane path creation instruction to the first satellite-borne UPF and the second satellite-borne UPF, which may specifically be implemented in step 505 that the core network control plane network element notifies the first satellite-borne UPF to create a user plane context and insert the user plane context as a satellite user bearer into the user plane path, and in step 506, the core network control plane network element notifies the second satellite-borne UPF to create a user plane context and insert the user plane context as a satellite user bearer into the user plane path.

The user plane context includes address information, charging mode and other information. Thereby, path channels from the first satellite-borne UPF to the core network UPF and from the core network UPF to the second satellite-borne UPF can be respectively established.

After the path between the satellite-borne UPFs on the two sides and the core network UPF is established, the end point information of the satellite-borne UPFs on the two sides needs to be sent to each other so as to facilitate the connection of the two, and further, the path between the satellite terminals on the two sides is realized.

Therefore, in step 507, the IMS notifies the core network control plane network element to update the endpoint information corresponding to the satellite-borne UPF corresponding to the satellite terminals on both sides.

After the core network control plane network element receives the notification of the IMS, in step 508, the core network control plane network element updates the user plane endpoint information for creating the second satellite-borne UPF to the first satellite-borne UPF. In step 509, the core network control plane network element updates the user plane endpoint information that created the first satellite-borne UPF to the second satellite-borne UPF.

The first satellite-borne UPF may receive the path creation instruction of the core network control plane network element, and send the tunnel endpoint information of the first satellite-borne UPF to the core network control plane network element, so that the core network control plane network element sends the tunnel endpoint information of the first satellite-borne UPF to the second satellite-borne UPF of the second low-orbit satellite. And meanwhile, the second satellite-borne UPF receives a path creation instruction of the core network control plane network element and sends the tunnel endpoint information of the second satellite-borne UPF to the core network control plane network element, so that the core network control plane network element sends the tunnel endpoint information of the second satellite-borne UPF to the second satellite-borne UPF of the first low-orbit satellite.

Thus, the communication data of the first satellite terminal can be transmitted to the second satellite terminal by the gateway station fully establishing the communication path from the first satellite terminal to the second satellite terminal.

In step 510, the user plane message of the first satellite terminal may reach the second terminal through the first satellite-borne base station — > the first satellite-borne UPF — > the satellite-borne router in the satellite corresponding to the first terminal — > … — > the satellite-borne router in the satellite i — > … — > the satellite-borne router in the satellite corresponding to the second terminal — > the second satellite-borne UPF — > the second satellite-borne base station corresponding to the second terminal. Of course, the same purpose can be achieved by the second terminal initiating a communication request to the first terminal.

The communication data sent by the first terminal is sent to the second low-orbit satellite by the first low-orbit satellite through an inter-satellite link between the first low-orbit satellite and the second low-orbit satellite, the communication data of the first terminal is received by the second low-orbit satellite and is sent to the second terminal through a user downlink, meanwhile, the communication data sent by the second terminal through the user uplink is received, the communication data sent by the second terminal is sent to the first low-orbit satellite through an inter-satellite link between the first low-orbit satellite and the second low-orbit satellite, so that the communication data of the second terminal is sent to the first terminal by the first low-orbit satellite through the user downlink, and finally point-to-point communication between the two satellite terminals is realized.

The inter-satellite link is adopted when the first low earth orbit satellite determines that the communication scene types of the first terminal and the second terminal are communication between different satellites. The inter-satellite link in the embodiment of the present application may span many satellites to perform connection between a first low-earth orbit satellite corresponding to the first terminal and a second low-earth orbit satellite corresponding to the second terminal, or may directly perform connection between the first low-earth orbit satellite corresponding to the first terminal and the second low-earth orbit satellite corresponding to the second terminal, which is not limited in this embodiment of the present application.

Based on the foregoing description, a gateway station is deployed on the ground by deploying a satellite-borne base station, a satellite-borne UPF and a satellite-borne router corresponding to the first terminal and the second terminal, respectively, in the low earth orbit satellite, and a core network UPF, a core network control plane network element and an IMS are deployed in the gateway station at the same time, so as to form a complete communication system. The communication request of the first terminal is received in the system, the communication scene type between the first terminal and the second terminal can be determined according to the communication request, the communication path between the first terminal and the second terminal is established according to the determined communication scene type, and finally the purpose of providing point-to-point voice or data service communication between the same satellite and satellite terminals in different satellite coverage ranges or between the satellite terminal and a ground network terminal is achieved, so that the communication requirements of high quality and high safety of users are fully guaranteed.

Based on the same inventive concept, the present application further provides a first low earth orbit satellite, as shown in fig. 6, the satellite includes:

a first receiving module 601, configured to receive a communication request for a first terminal to communicate with a second terminal;

a scenario determination module 602, configured to determine a communication scenario type between the first terminal and the second terminal based on the communication request, where the communication scenario type includes any one of the following types: the method comprises the following steps of communication in the same wave position of the same satellite, communication among different wave positions of the same satellite, communication among different satellites, and communication between a satellite terminal and a ground network terminal;

a communication module 603 configured to perform a peer-to-peer communication operation between the first terminal and the second terminal based on the communication scenario type.

In some embodiments, the performing, based on the communication scenario type, a peer-to-peer communication operation between the first terminal and the second terminal is performed, and the communication module 603 is specifically configured to:

In some embodiments, a first satellite-based UPF is deployed in the first low-earth orbit satellite, and for any communication scenario type, the communication module 603 is specifically configured to perform a peer-to-peer communication operation between the first terminal and the second terminal:

In some embodiments, a first satellite-borne base station is further deployed in the first low-earth orbit satellite, a core network UPF, a core network control plane network element, and an IMS are deployed in the gateway station, and the establishing, by the gateway station, a communication path between the first satellite-borne UPF and the second satellite-borne UPF is performed, where the communication module 603 is specifically configured to:

sending the communication request to the core network UPF of the gateway station through the first satellite-borne base station, so that the core network UPF transmits the communication request to the IMS, the IMS generates a control instruction and then sends the control instruction to the core network UPF, the core network UPF sends the control instruction to a second satellite-borne base station of the second terminal, the second satellite-borne base station sends the control instruction to the second terminal, and the second satellite-borne base station is deployed in a satellite where the second terminal is located;

In some embodiments, prior to said receiving a communication request for communication between the first terminal and the second terminal, the satellite further comprises:

an access processing module 604, configured to receive an access request of the first terminal based on a first satellite-borne base station of the first low-earth satellite;

and sending the feedback information to the first terminal.

Based on the same inventive concept, the embodiment of the present application further provides a second low-earth orbit satellite, as shown in fig. 7, the satellite includes:

a second receiving module 701, configured to receive, through an inter-satellite link with a first low-earth orbit satellite, communication data sent by a first terminal transmitted by the first low-earth orbit satellite;

a first sending module 702, configured to send communication data of the first terminal to a second terminal;

the second receiving module 701 is further configured to receive communication data of the second terminal;

the first sending module 702 is further configured to send the communication data of the second terminal to the first low-earth orbit satellite through the inter-satellite link, so that the first low-earth orbit satellite sends the communication data of the second terminal to the first terminal;

In some embodiments, a core network control plane network element, a core network UPF, an IMS are deployed in the gateway station; a second satellite-borne base station is deployed in the second low earth orbit satellite; before the communication data transmitted by the first terminal and transmitted by the first low earth orbit satellite is received through the inter-satellite link with the first low earth orbit satellite, the second receiving module 701 is further configured to receive, through the second satellite-borne base station, a control instruction transmitted by a core network UPF of a gateway station, where the control instruction is generated by the IMS based on a communication request of the first terminal;

the first sending module 702 is further configured to send the control instruction to the second terminal;

the second receiving module 701 is further configured to receive response information of the second terminal for the control instruction;

the first sending module 702 is further configured to send the response information to the core network UPF, so that the core network UPF transmits the response information to the IMS;

the second receiving module 701 is further configured to receive, through the second satellite-borne UPF, a path creation instruction of the core network control plane network element;

the first sending module 702 is further configured to send the tunnel endpoint information of the second satellite-borne UPF to the core network control plane network element through the second satellite-borne UPF, so that the core network control plane network element sends the tunnel endpoint information of the second satellite-borne UPF to the first satellite-borne UPF of the first low-earth satellite.

Based on the same inventive concept, an embodiment of the present application further provides a gateway station, as shown in fig. 8, where the gateway station includes:

a second sending module 802, configured to send, to the second terminal, the communication data sent by the first terminal to the second terminal when the communication scene types of the first terminal and the second terminal are the specified types; sending the communication data sent by the second terminal to the first terminal;

In some embodiments, the gateway station further comprises:

In some embodiments, the first terminal corresponds to a first satellite-borne base station and the second terminal corresponds to a second satellite-borne base station; a core network UPF, a core network control plane network element, and an IMS are deployed in the gateway station, and the establishment of a communication path between the first satellite-borne UPF and the second satellite-borne UPF is performed, where the gateway station includes:

a third receiving module 801, configured to receive, through the core network UPF, a communication request sent by the first satellite-borne base station; the communication request is used for requesting the first terminal and the second terminal to communicate;

a second sending module 802, configured to send the communication request to the IMS through the core network UPF, so that the IMS generates a control instruction;

a second sending module 802, configured to send the control instruction to the second satellite-borne base station through the core network UPF, so that the second satellite-borne base station sends the control instruction to the second terminal;

a third receiving module 801, configured to receive, by the second satellite-borne base station, response information of the second terminal for the control instruction;

a second sending module 802, further configured to send the response information to the core network UPF through the second satellite-borne base station;

a third receiving module 801, configured to receive the response information through the core network UPF;

a second sending module 802, configured to send the response message to the IMS through the core network UPF;

a second sending module 802, further configured to send, by the IMS, a notification for creating a path to the core network control plane network element based on the response information;

a second sending module 802, further configured to send, by the core network control plane network element, a path creation instruction to the first satellite-borne UPF and the second satellite-borne UPF based on the notification for creating a path;

a third receiving module 801, further configured to receive, by the core network control plane network element, the tunnel endpoint information of the first satellite-borne UPF sent by the first satellite-borne UPF, and receive the tunnel endpoint information of the second satellite-borne UPF sent by the second satellite-borne UPF;

the second sending module 802 is further configured to send the tunnel endpoint information of the first satellite-borne UPF to the second satellite-borne UPF through the core network control plane network element, and send the tunnel endpoint information of the second satellite-borne UPF to the first satellite-borne UPF.

Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application, and on the basis of the foregoing embodiments, the present application further provides an electronic device, as shown in fig. 9, including: the system comprises a processor 901, a communication interface 902, a memory 903 and a communication bus 904, wherein the processor 901, the communication interface 902 and the memory 903 are communicated with each other through the communication bus 904;

the memory 903 has stored therein a computer program which, when executed by the processor 901, causes the processor 901 to perform the steps of:

In some embodiments, a first satellite-based base station is further deployed in the first low earth orbit satellite, a core network UPF, a core network control plane network element, and an IMS are deployed in the gateway station, and establishing, by the gateway station, a communication path between the first satellite-based UPF and the second satellite-based UPF includes:

and sending the feedback information to the first terminal.

Since the principle of the electronic device for solving the problem is similar to that of the communication method, the electronic device may be implemented by referring to the above embodiments, and repeated descriptions are omitted.

The communication bus mentioned in the electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus. The communication interface 902 is used for communication between the electronic apparatus and other apparatuses. The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Alternatively, the memory may be at least one memory device located remotely from the processor. The Processor may be a general-purpose Processor, including a central processing unit, a Network Processor (NP), and the like; but may also be a Digital instruction processor (DSP), an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like.

Fig. 10 is a schematic structural diagram of an electronic device provided in the present application, and on the basis of the foregoing embodiments, the present application further provides an electronic device, as shown in fig. 10, including: the system comprises a processor 1001, a communication interface 1002, a memory 1003 and a communication bus 1004, wherein the processor 1001, the communication interface 1002 and the memory 1003 are communicated with each other through the communication bus 1004;

the memory 1003 has stored therein a computer program which, when executed by the processor 1001, causes the processor 1001 to perform the steps of:

sending the communication data of the first terminal to a second terminal;

receiving communication data of the second terminal;

sending the control instruction to the second terminal;

The communication bus mentioned in the electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus. The communication interface 1002 is used for communication between the electronic apparatus and other apparatuses. The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Alternatively, the memory may be at least one memory device located remotely from the processor. The Processor may be a general-purpose Processor, including a central processing unit, a Network Processor (NP), and the like; but may also be a Digital instruction processor (DSP), an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like.

Fig. 11 is a schematic structural diagram of an electronic device provided in the present application, and on the basis of the foregoing embodiments, the present application further provides an electronic device, as shown in fig. 11, including: the system comprises a processor 1101, a communication interface 1102, a memory 1103 and a communication bus 1104, wherein the processor 1101, the communication interface 1102 and the memory 1103 are communicated with each other through the communication bus 1104;

the memory 1103 has stored therein a computer program that, when executed by the processor 1101, causes the processor 1101 to perform the steps of:

In some embodiments, the method further comprises:

The communication bus mentioned in the electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus. The communication interface 1102 is used for communication between the electronic apparatus and other apparatuses. The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Alternatively, the memory may be at least one memory device located remotely from the processor. The Processor may be a general-purpose Processor, including a central processing unit, a Network Processor (NP), and the like; but may also be a Digital instruction processor (DSP), an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like.

On the basis of the foregoing embodiments, the present application further provides a computer-readable storage medium, in which a computer program executable by a processor is stored, and when the program is run on the processor, the processor is caused to execute the following steps:

and sending the feedback information to the first terminal.

Since the principle of solving the problem of the computer readable medium is similar to that of the communication method, after the processor executes the computer program in the computer readable medium, the steps implemented may refer to the above embodiments, and repeated parts are not described again.

sending the communication data of the first terminal to a second terminal;

receiving communication data of the second terminal;

sending the control instruction to the second terminal;

In some embodiments, the method further comprises:

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A communication system comprising a first low earth orbit satellite and a gateway station, wherein:

2. The system of claim 1, wherein the first low earth orbit satellite has a first on-board UPF and a first on-board base station deployed therein, wherein:

3. The system according to claim 2, wherein a core network UPF, a core network control plane network element and an IMS are deployed in the gateway station, wherein:

4. The system of claim 1,

the first satellite-borne base station of the first low earth orbit satellite is configured to receive an access request of a first terminal before receiving a communication request for communication between the first terminal and a second terminal, and send the access request to a core network control plane network element of the gateway station;

5. The system according to claim 1, wherein the first terminal is specifically configured to transmit the communication data between the first terminal and the second terminal by using a beam in a wave location corresponding to the first terminal if the communication scene type is communication in the same wave location of the same satellite.

6. The system according to claim 1, wherein the first terminal and the second terminal are specifically configured to determine a beam in a wave position corresponding to the second terminal if the communication scene type is communication in different wave positions of the same satellite; and transmitting communication data between the first terminal and the second terminal by using the wave beam in the wave position corresponding to the first terminal and the wave beam in the wave position corresponding to the second terminal.

7. The system according to claim 1, wherein the second terminal is specifically configured to determine a target satellite where the second terminal is located if the communication scene type is communication between the different satellites; and transmitting communication data between the first terminal and the second terminal through an inter-satellite link between the first terminal and a target satellite where the second terminal is located.

8. The system according to claim 1, wherein the first terminal and the second terminal are specifically configured to transmit the communication data between the first terminal and the second terminal by using the gateway station connected to the first low-earth orbit satellite if the communication scene type is communication between the satellite terminal and the earth network terminal.

9. A communication method applied to a first low earth orbit satellite, the method comprising:

10. A communication method applied to a second low earth orbit satellite, the method comprising:

sending the communication data of the first terminal to a second terminal;

receiving communication data of the second terminal;

11. A communication method, applied to a gateway station, the method comprising: