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Survey of load balancing routing technology in satellite network
Dun Congying1，2,，Jin Fenglin1,，Tan Shihan1，Qi Chunyu2
(1.Command & Control Engineering College,，Army Engineering University,，Nanjing 210007，China,； 2.Unit 31697 of PLA,，Dalian 116100，China)
Abstract： Satellites provide an effective solution for accessing the network anytime and anywhere. However, due to the imbalance in the distribution of satellite network users and traffic, the link utilization rate of the satellite network is unbalanced. Then many load balancing routing technologies in satellite network have been proposed. This paper firstly introduces different types of satellite networks, and compares the advantages and disadvantages of different single-layer and multi-layer satellite networks. Then, according to the routing development of satellite network, the related technologies of global and local load balancing of single-layer satellite network, separation of upper and lower layer roles of multi-layer satellite network and load balancing using upper layer shunt are summarized at home and abroad. Then it makes a comparative analysis of the load balancing routing technology from the aspects of implementation effect, calculation mode, link cost, network overhead and so on. Finally, combined with the development trend of satellite network, the technical challenge and future direction for satellite network load balancing routing technology are put forward.
Key words : satellite network,；load balancing,；routing algorithm
