J4 ›› 2012, Vol. 39 ›› Issue (1): 92-97.doi: 10.3969/j.issn.1001-2400.2012.01.017

• Original Articles • Previous Articles     Next Articles

Routing algorithm for deep space networks with  a maximum throughput

LI Hongyan;YANG Guangxiang;WANG Wenlong   

  1. (State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an  710071, China)
  • Received:2011-07-28 Online:2012-02-20 Published:2012-04-06
  • Contact: LI Hongyan E-mail:hyli@xidian.edu.cn
  • About author:李红艳(1966-),女,教授,博士,E-mail: hyli@xidian.edu.cn.

Abstract:

The deep space network has several characteristics not commonly seen in terrestrial wireless networks. Important among them are the long delays and seldom continuous end-to-end paths which make conventional table-driven routing algorithms work inefficiently. To overcome these problems, a routing algorithm focusing on a maximum throughput is proposed. The algorithm constructs multiple end-to-end paths for non-real-time data delivery by utilizing the store-and-forward mechanism. According to intermittent connectivity phases and throughput of links, the available time intervals for data transmission of each link in a path are obtained which aims at maximizing the usage of link connectivity phases. The throughput of each path is calculated based on link available time intervals. The path with a maximum throughput is selected as the end-to-end route. Theoretical analysis and simulation results show that the routing algorithm is capable of supporting end-to-end communication with intermittent links and constructs the route with a maximum throughput.

Key words: deep space network, routing algorithm, store-and-forward, delay tolerant network, throughput