技术领域Technical field
本发明涉及卫星通信技术领域，特别是一种连接卫星通信基带系统与5G核心网的互联网关。The present invention relates to the technical field of satellite communication, in particular to an Internet gateway connecting a satellite communication baseband system and a 5G core network.
背景技术Background technique
卫星通信具有与地域无关的特性，通信质量高、系统可靠性高、通信距离远，不受通信两点间任何复杂地理条件的限制，因而在如海上、偏远山区等特殊应用场景下有很大的市场需求。但由于卫星通信与传统通信方式的传输媒质不同，并且全球用户均在共同的环境下使用，因而有着传输时延大、卫星链路环境不稳定、频带资源有限的缺点。Satellite communication has the characteristics of being independent of region. It has high communication quality, high system reliability and long communication distance. It is not restricted by any complex geographical conditions between two communication points. Therefore, it has great potential in special application scenarios such as at sea and remote mountainous areas. market demand. However, because satellite communication uses different transmission media from traditional communication methods, and users all over the world use it in a common environment, it has the disadvantages of large transmission delays, unstable satellite link environment, and limited frequency band resources.
5G(5th Generation Mobile Communication Technology，第五代移动通信技术)移动网络与早期的2G(2-Generation Wireless Telephone Technology，第二代移动通信技术)、3G(The 3rd Generation Telecommunication，第三代移动通信技术)和4G(The4Generation Mobile Communication Technology)移动网络一样，5G网络是数字蜂窝网络，在这种网络中，供应商覆盖的服务区域被划分为许多被称为蜂窝的小地理区域。表示声音和图像的模拟信号在手机中被数字化，由模数转换器转换并作为比特流传输。蜂窝中的所有5G无线设备通过无线电波与蜂窝中的本地天线阵和低功率自动收发器(发射机和接收机)进行通信。与前几代移动通信相比，5G的系统性能大幅提高、峰值速率可达10Gbps-20Gbps，而且具有速率高、时延低、满足大容量通信等优点。5G (5th Generation Mobile Communication Technology, fifth generation mobile communication technology) mobile network and early 2G (2-Generation Wireless Telephone Technology, second generation mobile communication technology), 3G (The 3rd Generation Telecommunication, third generation mobile communication technology) ) Like 4G (The4Generation Mobile Communication Technology) mobile networks, 5G networks are digital cellular networks in which the service area covered by the provider is divided into many small geographical areas called cells. Analog signals representing sound and images are digitized in the phone, converted by an analog-to-digital converter and transmitted as a bit stream. All 5G wireless devices in a cell communicate via radio waves with local antenna arrays and low-power automatic transceivers (transmitters and receivers) in the cell. Compared with previous generations of mobile communications, 5G system performance has been greatly improved, with peak rates up to 10Gbps-20Gbps. It also has the advantages of high speed, low latency, and ability to meet large-capacity communications.
卫星通信利用高、中、低轨卫星可实现广域甚至全球覆盖，可以为全球用户提供无差别的通信服务。同时，地面第五代移动通信具备巨大的用户群体、灵活高效的应用服务模式等。卫星与5G融合后，可以将网络延伸到地面网络无法到达的地方，卫星可以为物联网设备以及飞机、轮船、火车、汽车等移动载体用户提供连续不间断的网络连接、卫星与5G融合后，可以大幅度增强5G系统在这方面的服务能力。同时，卫星优越的广播/多播能力可以为网络边缘及用户终端提高高效的数据分发服务。卫星通信系统与5G相互融合，取长补短，共同构成全球无缝覆盖的海、陆、空、天一体化综合通信网，从而满足用户无处不在的多种业务需求，是通信发展的重要方向。卫星与5G融合将充分发挥各自的优势，为用户提供更全面优质的服务。Satellite communications use high, medium and low orbit satellites to achieve wide area or even global coverage, and can provide undifferentiated communication services to users around the world. At the same time, the fifth generation of terrestrial mobile communications has a huge user group, flexible and efficient application service models, etc. After the integration of satellites and 5G, the network can be extended to places that ground networks cannot reach. Satellites can provide continuous and uninterrupted network connections for IoT devices and mobile carrier users such as airplanes, ships, trains, and cars. After the integration of satellites and 5G, The service capabilities of 5G systems in this area can be greatly enhanced. At the same time, the superior broadcast/multicast capabilities of satellites can improve efficient data distribution services for network edges and user terminals. Satellite communication systems and 5G integrate with each other, learn from each other's strengths, and jointly form an integrated integrated communication network of sea, land, air, and space with seamless global coverage to meet the diverse business needs of users everywhere, which is an important direction for communications development. The integration of satellite and 5G will give full play to their respective advantages and provide users with more comprehensive and high-quality services.
发明内容Contents of the invention
本发明解决的技术问题是：克服现有技术的不足，提供了一种连接卫星通信基带系统与5G核心网的互联网关。The technical problem solved by the present invention is to overcome the shortcomings of the existing technology and provide an Internet gateway that connects the satellite communication baseband system and the 5G core network.
为了解决上述技术问题，本发明实施例提供了一种连接卫星通信基带系统与5G核心网的互联网关，所述卫星通信基带系统包括卫星终端、网络控制中心和网络管理系统；In order to solve the above technical problems, embodiments of the present invention provide an Internet gateway that connects a satellite communication baseband system and a 5G core network. The satellite communication baseband system includes a satellite terminal, a network control center and a network management system;
所述互联网关分别与5G核心网、网络控制中心和网络管理系统通信连接；The Internet gateway is connected to the 5G core network, network control center and network management system respectively;
所述网络控制中心与所述网络管理系统通信连接；The network control center is communicatively connected to the network management system;
所述网络控制中心与卫星终端通过卫星链路通信连接；The network control center and the satellite terminal are connected through satellite link communication;
所述互联网关，包括非接入层直传功能模块，用于实现所述卫星终端与所述5G核心网的非接入层之间的消息通信，以使所述互联网关转发卫星终端发送给5G核心网或5G核心网发送给卫星终端的非接入层消息；The Internet gateway includes a non-access layer direct transmission function module for realizing message communication between the satellite terminal and the non-access layer of the 5G core network, so that the Internet gateway forwards the messages sent by the satellite terminal to The 5G core network or the non-access layer message sent by the 5G core network to the satellite terminal;
所述互联网关，与5G核心网建立通用无线分组业务隧道协议用户面隧道，用于传输用户面数据，处理业务；The Internet gateway establishes a universal wireless packet service tunnel protocol user plane tunnel with the 5G core network for transmitting user plane data and processing services;
所述互联网关，与网络控制中心间建立用户面接口，实现控制面回传业务分发功能。The Internet gateway establishes a user plane interface with the network control center to realize the control plane backhaul service distribution function.
可选地，所述互联网关包括：NG建立及复位功能模块，Optionally, the Internet gateway includes: NG establishment and reset function module,
所述NG建立及复位功能模块，被配置为建立所述互联网关与所述5G核心网的接入，并与移动性管理系统建立初始连接，以及在连接建立失败后重新建立连接。The NG establishment and reset function module is configured to establish access between the Internet gateway and the 5G core network, establish an initial connection with the mobility management system, and re-establish the connection after the connection establishment fails.
可选地，所述互联网关包括：卫星终端信息注册及管理功能模块，Optionally, the Internet gateway includes: a satellite terminal information registration and management function module,
所述卫星终端信息注册及管理功能模块，被配置为在所述互联网关上创建卫星终端实体，并建立所述卫星终端相应的上下文信息、以及所述互联网关管理所述卫星终端的IP信息、位置信息。The satellite terminal information registration and management function module is configured to create a satellite terminal entity on the Internet gateway, establish corresponding context information of the satellite terminal, and manage the IP information and location of the satellite terminal on the Internet gateway. information.
可选地，所述互联网关包括：分组数据单元会话管理功能模块，Optionally, the Internet gateway includes: a packet data unit session management functional module,
所述分组数据单元会话管理功能模块，被配置为在所述互联网关上创建卫星终端对应的分组数据单元会话实体及通用无线分组业务隧道协议用户面隧道，以使所述互联网关维护所述卫星终端的分组数据单元会话信息、分组数据单元会话的服务质量参数、通用无线分组业务隧道协议用户面隧道参数，以及控制分组数据单元会话实体的销毁和通用无线分组业务隧道协议用户面隧道的销毁。The packet data unit session management functional module is configured to create a packet data unit session entity corresponding to the satellite terminal and a universal wireless packet service tunnel protocol user plane tunnel on the Internet gateway, so that the Internet gateway maintains the satellite terminal Packet data unit session information, packet data unit session quality of service parameters, Universal Wireless Packet Service Tunneling Protocol user plane tunnel parameters, and control the destruction of the packet data unit session entity and the destruction of the Universal Wireless Packet Service Tunneling Protocol user plane tunnel.
可选地，所述互联网关包括：同步功能模块，Optionally, the Internet gateway includes: a synchronization function module,
所述同步功能模块，被配置为执行所述卫星终端与所述互联网关的同步流程，在所述卫星终端和所述互联网关中任何一侧超时后，通过所述互联网关销毁所述卫星终端对应的分组数据单元会话、卫星终端上下文信息，并重新建立同步流程。The synchronization function module is configured to execute the synchronization process between the satellite terminal and the Internet gateway, and destroy the satellite terminal correspondence through the Internet gateway after either side of the satellite terminal and the Internet gateway times out. packet data unit session, satellite terminal context information, and re-establish the synchronization process.
可选地，所述互联网关包括：同互联网关切换功能模块，Optionally, the Internet gateway includes: a same-Internet gateway switching function module,
所述同互联网关切换功能模块，被配置为接收由所述网络管理系统发出的同互联网关切换命令，以使所述互联网关开始缓存下行业务。The same-Internet gateway switching function module is configured to receive an intra-Internet gateway switching command issued by the network management system, so that the Internet gateway starts caching downlink services.
可选地，所述互联网关包括：跨互联网关切换功能模块，Optionally, the Internet gateway includes: a cross-Internet gateway switching function module,
所述跨互联网关切换功能模块，被配置为接收由所述网络管理系统发出的跨互联网关切换命令，以使源互联网关停止下行业务，并进行业务前传及销毁卫星终端实体，目标互联网关进行切换的参数准备以及开启下行业务并创建卫星终端实体及卫星终端所对应的分组数据单元会话实体。The cross-Internet gateway switching function module is configured to receive a cross-Internet gateway switching command issued by the network management system, so that the source Internet gateway stops downlink services, performs business forwarding and destroys satellite terminal entities, and the target Internet gateway performs Prepare handover parameters, start downlink services and create satellite terminal entities and packet data unit session entities corresponding to the satellite terminals.
可选地，所述互联网关包括：心跳保活功能模块，Optionally, the Internet gateway includes: a heartbeat keep-alive function module,
所述心跳保活功能模块，被配置为实现所述互联网关与所述网络管理系统之间的心跳消息的发送，并在所述互联网关在超时收到心跳消息后，重新建立与所述网络管理系统的连接。The heartbeat keep-alive function module is configured to implement the sending of heartbeat messages between the Internet gateway and the network management system, and to re-establish communication with the network after the Internet gateway receives the heartbeat message after a timeout. Management system connections.
本发明与现有技术相比的优点在于：The advantages of the present invention compared with the prior art are:
本发明实施例可以完成卫星终端在5G核心网的注册、去注册、分组数据单元会话建立、分组数据单元会话删除、同互联网关切换、跨互联网关切换等功能，实现了卫星网络和5G核心网络的通信，在为移动载体用户提供连续不间断的网络连接的同时，也给用户提供了更加全面优质的服务。Embodiments of the present invention can complete functions such as registration and de-registration of satellite terminals in the 5G core network, packet data unit session establishment, packet data unit session deletion, same-internet gateway switching, cross-internet gateway switching, etc., and realize the satellite network and 5G core network. communications, while providing mobile carrier users with continuous and uninterrupted network connections, it also provides users with more comprehensive and high-quality services.
附图说明Description of the drawings
图1为本发明实施例提供的一种连接卫星通信基带系统与5G核心网的互联网关的结构示意图；Figure 1 is a schematic structural diagram of an interconnection gateway connecting a satellite communication baseband system and a 5G core network provided by an embodiment of the present invention;
图2为本发明实施例提供的一种卫星网和5G核心网融合系统的示意图；Figure 2 is a schematic diagram of a satellite network and 5G core network integration system provided by an embodiment of the present invention;
图3为本发明实施例提供的一种互联网关工作接口的示意图；Figure 3 is a schematic diagram of an Internet gateway working interface provided by an embodiment of the present invention;
图4为本发明实施例提供的一种互联网关控制面协议栈的示意图；Figure 4 is a schematic diagram of an Internet gateway control plane protocol stack provided by an embodiment of the present invention;
图5为本发明实施例提供的一种互联网关用户面协议栈的示意图。Figure 5 is a schematic diagram of an Internet gateway user plane protocol stack provided by an embodiment of the present invention.
具体实施方式Detailed ways
参照图1，示出了本发明实施例提供的一种连接卫星通信基带系统与5G核心网的互联网关的结构示意图，如图1所示，互联网关110可以分别与5G核心网140、网络控制中心120和网络管理系统130通信连接；Referring to Figure 1 , a schematic structural diagram of an Internet gateway connecting a satellite communication baseband system and a 5G core network provided by an embodiment of the present invention is shown. As shown in Figure 1 , the Internet gateway 110 can be connected to the 5G core network 140 and the network control network respectively. The center 120 is communicated with the network management system 130;
所述网络控制中心120与所述网络管理系统130通信连接；The network control center 120 is communicatively connected with the network management system 130;
所述网络控制中心120与卫星终端150通过卫星链路通信连接；The network control center 120 and the satellite terminal 150 are connected through satellite link communication;
所述互联网关110可以被配置为对所述卫星终端150与所述5G核心网140之间的数据进行转发。The Internet gateway 110 may be configured to forward data between the satellite terminal 150 and the 5G core network 140 .
接下来结合图2～图5对本发明实施例的技术方案进行如下详细描述。Next, the technical solution of the embodiment of the present invention will be described in detail below with reference to FIGS. 2 to 5 .
如图2所示，本发明提出了一种连接卫星通信基带系统与5G核心网的互联网关，互联网关的一侧和5G核心网相连，互联网关的另一侧分别和网络控制中心(NCC)、网络管理系统(NMS)相连接。互联网关作为卫星网和5G核心网之间的网关，透明转发卫星终端发送的非接入层(NAS)消息，5G核心网通过互联网关转发下行非接入层(NAS)消息。As shown in Figure 2, the present invention proposes an Internet gateway that connects the satellite communication baseband system and the 5G core network. One side of the Internet gateway is connected to the 5G core network, and the other side of the Internet gateway is connected to the Network Control Center (NCC). , Network Management System (NMS) is connected. As a gateway between the satellite network and the 5G core network, the Internet gateway transparently forwards non-access layer (NAS) messages sent by satellite terminals, and the 5G core network forwards downlink non-access layer (NAS) messages through the Internet gateway.
如图3所示，给出了互联网关工作接口的示意图。互联网关对外实现了5个接口，分别为N2、N3、A1、A2、A3接口。As shown in Figure 3, a schematic diagram of the working interface of the Internet gateway is given. The Internet gateway implements 5 external interfaces, namely N2, N3, A1, A2, and A3 interfaces.
其中，N2接口为互联网关的控制面接口，互联网关的N2接口传输层使用流传输控制协议(SCTP)和接入与移动性管理(AMF)建立连接，应用层协议使用NG应用协议(NGAP)。Among them, the N2 interface is the control plane interface of the Internet gateway. The transport layer of the N2 interface of the Internet gateway uses the Streaming Transmission Control Protocol (SCTP) and Access and Mobility Management (AMF) to establish a connection. The application layer protocol uses the NG Application Protocol (NGAP). .
N3接口为互联网关和UPF之间的用户面接口，使用通用无线分组业务(GPRS)隧道协议(GTP)，建立通用无线分组业务(GPRS)隧道协议用户面(GTP-U)隧道，用于传输用户面数据，处理业务。The N3 interface is the user plane interface between the Internet gateway and UPF. It uses the General Packet Radio Service (GPRS) Tunneling Protocol (GTP) to establish a General Packet Radio Service (GPRS) Tunneling Protocol User Plane (GTP-U) tunnel for transmission. User plane data, processing business.
A1接口为互联网关与卫星终端非接入层(NAS)软件间的控制面接口，使用用户数据报协议(UDP)。A1接口为逻辑接口，具体由A3接口和卫星链路分别实现互联网关到网络控制中心(NCC)、网络控制中心(NCC)到卫星终端的承载。The A1 interface is the control plane interface between the Internet gateway and the satellite terminal non-access layer (NAS) software, using the User Datagram Protocol (UDP). The A1 interface is a logical interface. Specifically, the A3 interface and the satellite link implement the transmission from the Internet gateway to the Network Control Center (NCC) and the Network Control Center (NCC) to the satellite terminal respectively.
A2接口为互联网关与卫星网网络管理系统(NMS)间的控制面接口，分为初始化配置接口和实时配置接口，承担了最大限速、最低保障等服务质量(QoS)参数在网络侧与卫星侧之间映射的功能。The A2 interface is the control plane interface between the Internet gateway and the satellite network management system (NMS). It is divided into an initial configuration interface and a real-time configuration interface. It is responsible for the maximum speed limit, minimum guarantee and other quality of service (QoS) parameters between the network side and the satellite. Functions that map between sides.
其中，初始化配置接口使用文件传输协议(FTP)协议，从网络管理系统(NMS)上下载配置文件，通过配置文件初始化互联网关。Among them, the initialization configuration interface uses the File Transfer Protocol (FTP) protocol to download the configuration file from the Network Management System (NMS) and initialize the Internet gateway through the configuration file.
实时配置接口使用传输控制协议(TCP)长连接，网络管理系统(NMS)作为服务端，互联网关作为客户端。实时配置接口中网络管理系统(NMS)与互联网关均使用卫星终端媒体接入控制(MAC)地址作为终端索引。为了保持传输控制协议(TCP)连接，在实时配置接口中周期性双向传递心跳，心跳用于连接保活。The real-time configuration interface uses Transmission Control Protocol (TCP) long connection, the Network Management System (NMS) serves as the server, and the Internet gateway serves as the client. In the real-time configuration interface, both the network management system (NMS) and the Internet gateway use the satellite terminal media access control (MAC) address as the terminal index. In order to maintain the Transmission Control Protocol (TCP) connection, heartbeats are periodically passed in both directions in the real-time configuration interface. The heartbeats are used to keep the connection alive.
A3接口为互联网关与网络控制中心(NCC)间的用户面接口，工作在2层模式。互联网关实现边界网关协议(BGP)代理功能，识别出A3接口中网络控制中心(NCC)发来的边界网关协议(BGP)报文，并进行回复。互联网关实现卫星终端网关地址解析协议(ARP)代理功能，识别出A3接口中的针对卫星终端网关的地址解析协议(ARP)请求，并进行回复。互联网关实现控制面回传业务分发功能，针对目的IP为网络管理系统(NMS)的回传业务，投递至互联网关。The A3 interface is the user plane interface between the Internet gateway and the Network Control Center (NCC), working in layer 2 mode. The Internet gateway implements the Border Gateway Protocol (BGP) proxy function, identifies the Border Gateway Protocol (BGP) messages sent by the Network Control Center (NCC) in the A3 interface, and replies. The Internet gateway implements the address resolution protocol (ARP) proxy function of the satellite terminal gateway, identifies the address resolution protocol (ARP) request for the satellite terminal gateway in the A3 interface, and replies. The Internet gateway implements the control plane backhaul service distribution function, and delivers the backhaul service of the network management system (NMS) with the destination IP to the Internet gateway.
如图4所示，给出了互联网关控制面协议栈示意图。其中，非接入层会话管理(NAS-SM)负责创建、更新、删除分组数据单元(PDU)会话、非接入层移动管理(NAS-MM)负责卫星终端的移动性管理、N11接口负责移动性管理(AMF)与会话管理功能(SMF)之间的分组数据单元(PDU)会话管理请求的转发功能，互联网关的传输层使用流传输控制协议(SCTP)通过N2接口与接入与移动性管理(AMF)建立连接，其中，应用层使用NG应用协议(NGAP)，以NG应用协议(NGAP)消息为单位进行传输。卫星终端与互联网关之间使用A1应用协议(A1AP)进行通信，实际使用A3接口进行投递。As shown in Figure 4, a schematic diagram of the Internet gateway control plane protocol stack is given. Among them, the non-access layer session management (NAS-SM) is responsible for creating, updating, and deleting packet data unit (PDU) sessions, the non-access layer mobility management (NAS-MM) is responsible for the mobility management of satellite terminals, and the N11 interface is responsible for mobility. Forwarding function of Packet Data Unit (PDU) session management requests between AMF and Session Management Function (SMF), the transport layer of the Internet Gateway using Streaming Transport Control Protocol (SCTP) over the N2 interface with Access and Mobility Management (AMF) establishes a connection, in which the application layer uses the NG Application Protocol (NGAP) and transmits in units of NG Application Protocol (NGAP) messages. The A1 application protocol (A1AP) is used for communication between the satellite terminal and the Internet gateway, and the A3 interface is actually used for delivery.
如图5示，给出了互联网关用户面协议栈示意图，具体内容如下：As shown in Figure 5, a schematic diagram of the Internet gateway user plane protocol stack is given. The specific content is as follows:
卫星终端与互联网关之间使用A3接口进行数据传递，在卫星终端完成鉴权认证、注册、分组数据单元(PDU)会话建立后，互联网关用户面建立通用无线分组业务(GPRS)隧道协议用户面(GTP-U)隧道，记录并管理属于某个卫星终端的隧道端点标识(TEID)、IP地址和用户数据报协议(UDP)端口号信息，卫星终端和用户面功能(UPF)之间使用通用无线分组业务(GPRS)隧道协议用户面(GTP-U)隧道传输用户数据和业务，根据业务不同可以提供不同的服务质量(QoS)流，隐藏IP信息，安全性更高。The A3 interface is used for data transmission between the satellite terminal and the Internet gateway. After the satellite terminal completes authentication, registration, and packet data unit (PDU) session establishment, the Internet gateway user plane establishes a General Packet Radio Service (GPRS) tunnel protocol user plane. (GTP-U) tunnel, records and manages the tunnel endpoint identification (TEID), IP address and User Datagram Protocol (UDP) port number information belonging to a certain satellite terminal. Common use is used between the satellite terminal and the user plane function (UPF). The Wireless Packet Service (GPRS) Tunnel Protocol User Plane (GTP-U) tunnel transmits user data and services. It can provide different quality of service (QoS) flows according to different services, hide IP information, and have higher security.
综上，本发明可以实现卫星网络和5G核心网之间的互联，不仅提高了5G网络覆盖的范围，而且可以为移动载体用户提供连续不间断的网络连接，为用户提供了更全面优质的服务，提高了用户体验。In summary, the present invention can realize the interconnection between the satellite network and the 5G core network, which not only improves the coverage of the 5G network, but also can provide continuous and uninterrupted network connections for mobile carrier users, providing users with more comprehensive and high-quality services. , improving user experience.
本发明实施例提供的连接卫星通信基带系统与5G核心网的互联网关，可以完成卫星终端在5G核心网的注册、去注册、分组数据单元会话建立、分组数据单元会话删除、同互联网关切换、跨互联网关切换等功能，实现了卫星网络和5G核心网络的通信，在为移动载体用户提供连续不间断的网络连接的同时，也给用户提供了更加全面优质的服务。The Internet gateway connecting the satellite communication baseband system and the 5G core network provided by the embodiment of the present invention can complete the registration and de-registration of the satellite terminal in the 5G core network, the establishment of the packet data unit session, the deletion of the packet data unit session, and the switching of the same Internet gateway. Functions such as cross-internet gateway switching realize communication between the satellite network and the 5G core network. While providing continuous and uninterrupted network connections for mobile carrier users, it also provides users with more comprehensive and high-quality services.
本申请所述具体实施方式可以使本领域的技术人员更全面地理解本申请，但不以任何方式限制本申请。因此，本领域技术人员应当理解，仍然对本申请进行修改或者等同替换；而一切不脱离本申请的精神和技术实质的技术方案及其改进，均应涵盖在本申请专利的保护范围中。The specific embodiments described in this application can enable those skilled in the art to understand this application more comprehensively, but do not limit this application in any way. Therefore, those skilled in the art should understand that modifications or equivalent substitutions can still be made to this application; and all technical solutions and improvements that do not deviate from the spirit and technical essence of this application should be covered by the protection scope of this application.
本发明说明书中未作详细描述的内容属本领域技术人员的公知技术。Contents not described in detail in the specification of the present invention are well-known technologies to those skilled in the art.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111062060.2ACN113949433B (en) | 2021-09-10 | 2021-09-10 | An Internet gateway connecting the satellite communication baseband system and the 5G core network |
| Application Number | Priority Date | Filing Date | Title |
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| CN202111062060.2ACN113949433B (en) | 2021-09-10 | 2021-09-10 | An Internet gateway connecting the satellite communication baseband system and the 5G core network |
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| CN113949433Btrue CN113949433B (en) | 2023-09-29 |
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| CN202111062060.2AActiveCN113949433B (en) | 2021-09-10 | 2021-09-10 | An Internet gateway connecting the satellite communication baseband system and the 5G core network |
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