Fitzek, Frank

Hundebøll, Martin

Rein, Stephan Alexander

English

M. Hundeboll

S. A. Rein

F. H. P. Fitzek

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Impact of network coding on delay and throughput in practical wireless chain topologies

In this paper, we present results from a practicalevaluation of network coding in a setup consisting of eight nodesdeployed in a chain topology. With the tradition pure relaying,delay increases dramatically as the network gets congested,and here network coding helps to moderate this increase indelay, as well improving throughput. The practical evaluationshows that network coding provides up to a five-fold decreasein delay, while retaining the expected gain in throughput. Toaddress an unecessary delay when using network coding in low-load scenarios, we propose and evaluate a scheme for adaptivebuffering. With this, we show that the benefits from pure relayingcan be combined with the improved performance from networkcoding. The software used to apply network coding and evaluatethis in a practical network is made publicly available for furtherresearch and tests.In this paper, we present results from a practical evaluation of network coding in a setup consisting of eight nodes deployed in a chain topology. With the tradition pure relaying, delay increases dramatically as the network gets congested, and here network coding helps to moderate this increase in delay, as well improving throughput. The practical evaluation shows that network coding provides up to a five-fold decrease in delay, while retaining the expected gain in throughput. To address an unecessary delay when using network coding in low-load scenarios, we propose and evaluate a scheme for adaptive buffering. With this, we show that the benefits from pure relaying can be combined with the improved performance from network coding. The software used to apply network coding and evaluate this in a practical network is made publicly available for further research and tests

Impact of Network Coding on Delay and Throughput in Practical Wireless Chain Topologies

https://vbn.aau.dk/ws/files/71109525/paper.pdf

Impact of Network Coding on Delay and Throughput in Practical Wireless Chain Topologies

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