Systems Engineering and Electronics ›› 2020, Vol. 42 ›› Issue (6): 1395-1401.doi: 10.3969/j.issn.1001-506X.2020.06.25

Previous Articles     Next Articles

Multi-QoS objective optimization routing algorithm of satellite network based on SDN

Xiaodong SHI(), Yongjun LI(), Shanghong ZHAO(), Weilong WANG(), Xingyu WANG()   

  1. Information and Navigation College, Air Force Engineering University, Xi'an 710077, China
  • Received:2019-08-29 Online:2020-06-01 Published:2020-06-01
  • Supported by:
    国家自然科学基金(91638101);国家自然科学基金(61701522);陕西省自然科学基金(2018JM6069)

Abstract:

The diversification of service types in traditional satellite networks leads to complex network configuration and quality of service (QoS) cannot be effectively guaranteed. The satellite network architecture based on software-defined networking (SDN) is studied, and an adaptive routing algorithm that can meet a variety of QoS requirements is proposed. Firstly, a routing optimization model of SDN satellite network with multiple constraints is established. Then the model is relaxed by Lagrange relaxation method. Finally, the gradient method is used to solve the problem iteratively and to search for the optimal path to satisfy the bandwidth, latency, packet loss rate. The research results show that the optimization algorithm improves QoS satisfaction by 64% compared with low-earth-orbit satellite routing algorithm (LSRA), and improves latency satisfaction and packet loss rate satisfaction by 28% compared with software-defined routing algorithm (SDRA).

Key words: software-defined networking (SDN), satellite network, quality of service (QoS), routing algorithm

CLC Number: 

[an error occurred while processing this directive]