Codecast: a network-coding-based ad hoc multicast protocol |
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Authors: | JOON-SANG Park Mario Gerla Desmond S Lun Yunjung Yi Muriel Medard |
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Institution: | California Univ., CA; |
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Abstract: | In this article we present CodeCast, a network-coding-based ad hoc multicast protocol. CodeCast is especially well-suited for multimedia applications with low-loss, low-latency constraints such as audio/video streaming. The key ingredient of CodeCast is random network coding, which transparently implements both localized loss recovery and path diversity with very low overhead. Simulation results show that in a typical setting, CodeCast yields a nearly 100 percent delivery ratio, as compared to a 94 percent delivery ratio by traditional multicast. More importantly, the overhead is reduced by as much as 50 percent |
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