Routing and Rate-Control for Coded Cooperation in a Satellite-Terrestrial Network
Abstract
We address the problem of high-throughput, delay-constrained communication over a satellite-terrestrial network where terrestrial node mobility leads to intermittent links. Due to the short time-scale of the link durations in this scenario, standard single-path routing protocols are disadvantaged by the delay incurred In determining that a route is unavailable and then finding a new route. Instead we focus on the approach of sending data over multiple paths simultaneously, and use random linear network coding as a distributed way of sending Iinearly-independent data on different paths. To ensure efficient use of bandwidth, we present a routing and rate control protocol for coded multipath routing. This protocol specifies the fraction of offered traffic carried on each path, provides a congestion avoidance strategy to limit queueing delays in the network, and adapts quickly to time-varying connectivity. We outline our coded routing and rate-control strategy and also present simulation results from a mobile satellite~terrestrial network.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 2011
- Accession Number
- ADA570523
Entities
People
- Andrew P. Worthen
- Brooke Shrader
- Thomas H. Shake
Organizations
- Massachusetts Institute of Technology