Performance of Network-Coding in Multi-Rate Wireless Environments for Multicast Applications
Authors
Luiz Filipe M. Vieira, Archan Misray, Mario Gerla
Abstract
This paper investigates the interaction between network coding and link-layer transmission rate diversity in multihop wireless networks. By appropriately mixing data packets at intermediate nodes, network coding allows a single multicast flow to achieve higher throughput to a set of receivers. Broadcast applications can also exploit link-layer rate diversity, whereby individual nodes can transmit at faster rates at the expense of corresponding smaller coverage area. We first demonstrate how combining rate-diversity with network coding can provide a larger capacity again for data dissemination of a single multicast flow. We present a linear programming model to compute the maximal throughput that a multicast application can achieve with network coding in a rate-diverse wireless network. We then present simulation results comparing the performance of network coding in combination with transmission rate diveristy, for a realistic stream-oriented application. Our results provide preliminary evidence that wireless network coding may lead to a latency-vs-throughput tradeoff.
Publication Date
September, 2007
Venue
Annual Conference of ITA, 2007
Published To
None
Paper Signficance
This is a highlighted paper of scientific significance
Publication Type
ITA Conference paper
ITA Area
Project 2, Technical area 1
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