Fitzek, Frank

Hundebøll, Martin

Pahlevani, Peyman

Roetter, Daniel Enrique Lucani

This work proposes a new protocol applying on–the–fly random linear network coding in wireless mesh net-works. The protocol provides increased reliability, low delay,and high throughput to the upper layers, while being obliviousto their specific requirements. This seemingly conflicting goalsare achieved by design, using an on–the–fly network codingstrategy. Our protocol also exploits relay nodes to increasethe overall performance of individual links. Since our protocolnaturally masks random packet losses from the upper layers, itmakes it particularly suitable for enhancing TCP’s performancein wireless mesh networks, where packet losses are typicallyinterpreted as a sign of congestion by TCP’s congestion controlalgorithms, thus crippling TCP’s throughput. To investigate thegains and downsides of our protocol, we implement it as aconfigurable proof-of-concept application, which is deployed andevaluated in a real test bed with Raspberry Pi devices. We showthat order of magnitude gains in throughput over plain TCP arepossible with moderate losses and up to two fold improvementin per packet delay in our results

Throughput vs. Delay in Lossy Wireless Mesh Networks with Random Linear Network Coding

http://vbn.aau.dk/files/201394818/edas_paper.pdf

Throughput vs. Delay in Lossy Wireless Mesh Networks with Random Linear Network Coding

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