CN-122026993-A - Multifunctional satellite store-and-forward communication method capable of realizing random access

CN122026993ACN 122026993 ACN122026993 ACN 122026993ACN-122026993-A

Abstract

The invention discloses a multifunctional satellite store-and-forward communication method based on random access, and belongs to the field of satellite communication. The invention provides a satellite storage forwarding communication method combining on-board data storage forwarding and ground user terminal with access from the perspective of solving the problem that an NGSO constellation system can only provide limited communication service in the initial deployment stage, which is helpful for solving the problems of fewer constellation communication service functions and lower resource utilization rate under the condition of insufficient satellite quantity in the initial deployment stage of the NGSO constellation system, and provides a thought for fully utilizing the resources of the NGSO constellation system, and simultaneously provides various user service functions for the user terminal with access, thereby further expanding the application modes of the NGSO satellite.

Inventors

ZHAO WEISONG
ZHANG YONGCHI
XIAO YONGWEI
WANG LICHONG
YU CHUNWEI
LIU YANGANG
Bai kan
ZHOU LICUN

Assignees

中国电子科技集团公司第五十四研究所

Dates

Publication Date: 20260512
Application Date: 20260206

Claims (5)

1. The method is characterized in that the method is realized based on a ground operation control center, a gateway station, a user terminal and a satellite, and the satellite components comprise a storage forwarding system, a satellite-borne switching unit and a load monitoring unit, and specifically comprises the following steps: (1) The ground operation control center, the user terminal and the satellite respectively and correspondingly complete preset operations of satellite starting range, satellite routing and user terminal return route; (2) The ground control center plans a user white list, and synchronously updates and uploads white list information to the satellite through the gateway station; (3) After the satellite is within the starting range of the satellite, the user terminal sends a network access and beam resource application to the satellite through a signaling beam according to the service transmission requirement, and receives the network access and beam resource application result of the satellite; (4) The user terminal analyzes the received network access and beam resource application result, if the network access is successful and the beam resource is applied, the step (5) is executed, if the network access is unsuccessful or the beam resource is not applied, the step (3) is returned; (5) The ground operation control center, the gateway station, the satellite, the sending user terminal and the receiving user terminal are matched together to finish the storage and forwarding of the file, the user management, the file breakpoint continuous transmission and the automatic file deletion.
2. The method for random access multi-functional satellite store-and-forward communication according to claim 1, wherein each preset in step (1) is: The ground operation control center performs task planning according to the position of the user terminal, and determines the starting range of the satellite; presetting a satellite route in a user terminal; and presetting a user terminal backhaul route in the space-borne switching unit.
3. The method for performing random access multi-functional satellite store-and-forward communication according to claim 1, wherein the specific process of step (2) is as follows: (2-1) planning a user terminal white list by the ground operation control center, wherein the white list comprises user terminal numbers and service port IP addresses; (2-2) the ground-based operations center annotating the user terminal whitelist to the satellite via the gateway station over the feeder link when the gateway station and the satellite are visible.
4. The method for multi-functional satellite store-and-forward communication with random access according to claim 1, wherein the specific process of step (3) is as follows: (3-1) the user terminal is on duty in the signaling beam, and receives the downlink broadcast information; (3-2) the user terminal sends network access and beam resource application to the satellite through signaling beams and preset satellite routes, wherein the application information comprises the number of the user terminal, the position information and the applied beam resource information; (3-3) after receiving the request of the network access and the beam resource of the user terminal, the load monitoring unit performs white list comparison, if the user terminal number is identified in the white list, inquires the backhaul route of the user terminal from the space-borne switching unit, returns a successful response of the network access request to the user terminal through the inquired backhaul route of the user terminal, then continues to execute the step (3-4), and if the user terminal number is not identified in the white list, refuses the network access request of the user terminal; and (3-4) after the user terminal is successful in network access, the load monitoring unit analyzes according to the received beam resource application information and the currently available beam resource information, and feeds back a beam resource allocation result to the user terminal.
5. The method for multi-functional satellite store-and-forward communication with random access according to claim 1, wherein the store-and-forward specific process of the file in step (5) is as follows: (5-1) after receiving successful information of network access and beam resource application of the user terminal transmitted back by the load monitoring unit through the gateway station, the ground operation control center transmits a data storage forwarding instruction to the storage forwarding system through the gateway station and receives the user terminal information; (5-2) the store-and-forward system receives and analyzes the received data store-and-forward instruction and receives the user terminal information, and generates a file receiving instruction; (5-3) transmitting the data file to be forwarded by the user terminal through the allocated user beam resource to the store-and-forward system of the satellite; (5-4) the store-and-forward system performs a store operation after receiving the data file uploaded by the sending user terminal, and continuously monitors the network access and beam resource application state of the receiving user terminal through the load monitoring unit; After the load monitoring unit monitors the state information of successful access and beam resource application of the receiving user terminal, the monitored state information and the return route of the receiving user terminal inquired from the satellite-borne switching unit are forwarded to the store-and-forward system, and the store-and-forward system sends the file receiving instruction generated in the step (5-2) to the receiving user terminal through satellite-to-ground signaling beams and the return route of the receiving user terminal; (5-6) after receiving the file receiving instruction sent by the store-and-forward system, the receiving user terminal analyzes the instruction, and then returns a file transmission request to the store-and-forward system through a signaling beam and a preset satellite route; And (5-7) after receiving the file transmission request returned by the receiving user terminal, the storage forwarding system sends the stored data file to the receiving user terminal to complete the file transmission flow.

Description

Multifunctional satellite store-and-forward communication method capable of realizing random access Technical Field The invention designs a multifunctional satellite store-and-forward communication method with random access, and belongs to the field of satellite communication. Background The geostationary satellite can normally cover a service area to provide real-time communication service, for IGSO, MEO, LEO and other orbit satellites, the geostationary satellite has dynamic motion to the ground, a single satellite cannot provide continuous communication service for a certain target, and after the constellation is deployed, the constellation can provide normalized service guarantee, and before the constellation can only provide limited communication service. On the basis, the service function and the resource utilization rate of the constellation can be increased through a store-and-forward technology. The existing satellite store-and-forward related technology focuses on various methods and flows for implementing store-and-forward, and lacks design for available user service functions. Disclosure of Invention The invention aims to avoid the defects in the background technology and provide a multifunctional satellite store-and-forward communication method with random access. The invention realizes user management, file breakpoint continuous transmission and automatic file deletion for multiple user service functions for users, and expands the application mode of NGSO satellites. In order to achieve the above purpose, the present invention provides the following technical solutions: A multi-functional satellite store-and-forward communication method of random access is realized based on a ground operation control center, a gateway station, a user terminal and a satellite, and the satellite component comprises a store-and-forward system, a satellite-borne switching unit and a load monitoring unit, and specifically comprises the following steps: (1) The ground operation control center, the user terminal and the satellite respectively and correspondingly complete preset operations of satellite starting range, satellite routing and user terminal return route; (2) The ground control center plans a user white list, and synchronously updates and uploads white list information to the satellite through the gateway station; (3) After the satellite is within the starting range of the satellite, the user terminal sends a network access and beam resource application to the satellite through a signaling beam according to the service transmission requirement, and receives the network access and beam resource application result of the satellite; (4) The user terminal analyzes the received network access and beam resource application result, if the network access is successful and the beam resource is applied, the step (5) is executed, if the network access is unsuccessful or the beam resource is not applied, the step (3) is returned; (5) The ground operation control center, the gateway station, the satellite, the sending user terminal and the receiving user terminal are matched together to finish the storage and forwarding of the file, the user management, the file breakpoint continuous transmission and the automatic file deletion. Further, each preset in the step (1) is respectively: The ground operation control center performs task planning according to the position of the user terminal, and determines the starting range of the satellite; presetting a satellite route in a user terminal; and presetting a user terminal backhaul route in the space-borne switching unit. Further, the specific process of the step (2) is as follows: (2-1) planning a user terminal white list by the ground operation control center, wherein the white list comprises user terminal numbers and service port IP addresses; (2-2) the ground-based operations center annotating the user terminal whitelist to the satellite via the gateway station over the feeder link when the gateway station and the satellite are visible. Further, the specific process of the step (3) is as follows: (3-1) the user terminal is on duty in the signaling beam, and receives the downlink broadcast information; (3-2) the user terminal sends network access and beam resource application to the satellite through signaling beams and preset satellite routes, wherein the application information comprises the number of the user terminal, the position information and the applied beam resource information; (3-3) after receiving the request of the network access and the beam resource of the user terminal, the load monitoring unit performs white list comparison, if the user terminal number is identified in the white list, inquires the backhaul route of the user terminal from the space-borne switching unit, returns a successful response of the network access request to the user terminal through the inquired backhaul route of the user terminal, then continues to execute the step (3-4), and if t