Communication method, device and system applied to satellite network

Abstract

The invention provides a communication method, a device and a system applied to a satellite network. The method comprises the following steps: receiving a data packet sent by a sending end; allocatinga corresponding mapping entry to the sending end according to a preset access control strategy; updating the mapping entry according to a preset movement rule; extracting a data sending request according to the data packet sent by the sending end; sending the updated mapping entry and the data sending request to an identifier mapping server; receiving a current mapping entry of the receiving endfed back by the identification mapping server; and sending the data packet to an identifier switching router corresponding to the receiving end according to the current mapping entry. According to themethod, the mapping entry is updated and the data packet is mapped through the corresponding identifier switching router, so that the terminal can always use the original IP to establish logical communication connection, and in the inter-satellite mobile switching process of the user terminal, the original established logical communication connection is not interrupted due to the change of the routing identifier. And the transmission accuracy and consistency are ensured.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a communication method, device and system applied to a satellite network. Background technique [0002] The satellite network can realize seamless coverage and information exchange in a huge space, and is widely used in communication, navigation, remote sensing and other fields. However, the network nodes of the satellite network are moving, the topology is dynamic and changeable, and the connection established by ground users through the satellite network is stable. poor. In order to maximize the user's communication experience, the traditional mobile IP technology realizes the continuity of mobile node communication by introducing home agent and foreign agent. However, when the mobile node is far away from the home agent, the mobile node directly or through the foreign agent The home agent registration process has a long delay, and when the number of mobile nodes is larg...

AI Technical Summary

Problems solved by technology

[0003] In view of this, the embodiment of the present invention provides a communication method, device and system applied to a satellite network, which solves the problem that the registration process delay is long and the mobile terminal The number is large, the overhead of frequent registration signaling is large, and the terminal needs to be modified

Images