Research On The Adaptive Routing Protocols In Satellite Networks

The LEO（Low Earth Orbit）satellite network is a type of wireless networksystem in space in which various LEO satellite nodes are inter-connected byinter-satellite links（ISLs）. Because of the particular features of LEO satellite networks,such as short propagation delay, global coverage, near real time and high bandwidth,LEO satellite networks play a very important role in military and civil area.The thesis focuses on the routing protocol in LEO satellite networks. Firstly, thisdissertation focuses on resolving the problem of unbalanced traffic load carried in thenetworks. Based on the analysis of the technology challenges for routing in satellitenetworks and the limitation of related work, A new routing protocol named LBR（Load-Balanced on-demand Routing）is proposed for LEO satellite networks.Simulation results verify that the proposed protocol can achieve better load balance.Secondly, the thesis studies the survivable routing technology of LEO satellitenetworks. This paper proposes a new survivable routing protocol based on multi-pathfor LEO satellite networks. The new routing protocol named MPSR（Multi-PathSurvivable Routing）. The schemes of precaution and restoration are employed tosupport two node-disjoint multi-paths from the source to the destination. The qualitativeanalysis shows that the MPSR protocol enhances the robustness and survivability ofLEO satellite networks.