Satellite network dynamic routing algorithm based on mobile agent

To overcome the deficiencies of the existing satellite routing algorithms, satellite network dynamic routing algorithm based on mobile agent (SDRA-MA) was proposed considering the unfair distribution of network traffic. For SDRA-MA, mobiled agents migrated among satellites to gather the inter-satellite link (ISL) cost and the latitude of visited satellite. When conditions permitted, mobile agents migrated back. On each intermediate satellite, mobile agents evaluated the path cost considering the satellite geographical position as well as the ISL cost, and finally updated the routing tables. Simulations on the Iridium-like system show that the proposed algorithm has adaptive abilities to deal with congestion and to achieve load balancing, and that in case of high traffic load, SDRA-MA can achieve better end-to-end delay guarantee and lower packet loss ratio compared to the traditional satellite routing algorithms. Furthermore, results of the complexity analysis demonstrate that SDRA-MA has low requirements on onboard signaling, storage and computation.