Access and Handover Authentication in Intermittent Connection Scenario of Satellite Network

Abstract

This article disclosed an authentication method for access and handover in a low-orbit satellite network intermittent connection scenario.The scheme was based on a symmetrical cryptographic system.Based on hash function, XOR operation and timestamp, the safe access of the terminal to the satellite network was ensured.It reduced signaling overhead, bandwidth overhead, and computing overhead as well.In view of the link interruption, the solution was based on the current session key between the user and satellites to quickly and safely resume communication to ensured the quality of service.Through the orbit prediction technology, according to the current session key between the user and satellites and random number, the safe switching between satellites was realized, and the communication cost during the satellite switching process was reduced.The scheme realized the anonymity of user identity, and refreshed the temporary identity for the next authentication after successful authentication.

Keywords

• space-integrated-ground information network;access authentication;handover;intermittent connection scenario