Mobility

Ncrawl: Network Coding for Rate Adaptive Wireless Links

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Executive Summary

Intersession Network Coding (NC) can provide significant performance benefits via mixing packets at wireless routers; these benefits are especially pronounced when NC is applied in conjunction with intelligent link scheduling. NC however imposes certain processing operations, such as encoding, decoding, copying and storage. When not utilized carefully, all these operations can induce tremendous processing overheads in practical, wireless, multi-rate settings. The authors' measurements with prior NC implementations suggest that such processing operations severely degrade the router throughput, especially at high bit rates. Motivated by this, they design NCRAWL, a Network Coding framework for Rate Adaptive Wireless Links.

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