Abstract: To address the high-speed information transmission in satellite network dynamic environment and large differences of service types, a reliability analysis method that considers the Qualiby of Service (QoS) index constraints of different services is proposed. In the actual operation period of satellite communication network, the communication system is often in the process of gradual deterioration, which leads to the normal operation and complete failure of satellite nodes and links, but also part of the failure. In this paper, on the basis of multi state links, based on Minimum Path Set Algorithms (MPSA), under the constraints of QoS indexes (delay, bandwidth and packet loss rate) of different services, all reliable path sets satisfying the QoS constraints of the service are obtained, and the end-to-end reliability of the network is obtained by non intersection processing of path centralized paths.The results show that different services have different end-to-end reliabilities due to different QoS requirements, and the proposed method is more realistic than traditional methods. In addition, since the end-to-end parallel Multi-Path Transmission(MPT) is used in the actual satellite network, on the basis of the above research, this paper further studies the end-to-end reliability of multi-path data transmission. The results show that the multi-path data transmission has high reliability.

Key words: satellite network, service types, link multi state, Minimum Path Set Algorithms (MPSA), end-to-end reliability