Abstract
A novel load balancing routing scheme is proposed for Polar-orbit Low Earth Orbit satellite networks. This scheme employs mobile agents to gather related routing information by migrating autonomously. And, stationary agents estimate Inter-satellite Link (ISL) cost, routing path cost and update routing items on satellites. In the proposed scheme, ISL queueing delay is estimated using M/M/1 queueing model. Moreover, ISL cost is calculated as the sum of propagation and queueing delays. Furthermore, ISL Cost Modification Factor (ICMF) is designed considering the characteristic of Polar-orbit satellite constellation as well as the traffic distribution on the earth. Finally, path cost is evaluated based on ICMF and ISL cost. Simulation results on an Iridium-like system show that the novel scheme can achieve better load balancing, throughput and end-to-end delay than the existing method. Besides, the impact of ICMF on the observed performance is thoroughly investigated.
| Original language | English |
|---|---|
| Pages (from-to) | 1373-1384 |
| Number of pages | 12 |
| Journal | Journal of Information and Computational Science |
| Volume | 9 |
| Issue number | 5 |
| State | Published - 1 May 2012 |
| Externally published | Yes |
Keywords
- Agent
- Load balancing
- Polar-orbit LEO satellite networks
- Routing
ASJC Scopus subject areas
- Information Systems
- Computer Graphics and Computer-Aided Design
- Computational Theory and Mathematics
- Library and Information Sciences