A Satellite Networks Fault Management Method based on Cooperation

Different from terrestrial networks, satellite network topology is time-varying. Moreover, satellite networks communication resources are scare and expensive. So it is important to research on the fault management for satellite networks to insure it work safely and smoothly. However, the traditional fault management method for terrestrial networks is difficult to use for satellite networks. In this paper, the satellite networks topology is studied and the satellite networks management architecture is established. Based on these the three level management mechanism is proposed and put forward a new fault management method for satellite networks. When a satellite agent could respond to the network management instruction received from the management station, the traditional fault management method was used through network management technique. If the satellite could not respond to the network management demand, the intra-domain cooperation or inter-domain cooperation would be activated. The suspected fault satellite could be tested through cooperation among the satellite agents in satellites. The simulation results shows that in the circumstance of the low faulty frequency, the new method could be effectively used in satellite network with short cooperative time and low throughput.