This paper introduces PRAVDA, a new approach for infrastructure based content distribution in a vehicular network. PRAVDA is built on broadcasting and pseudorandomnetworkcoding. Its first strength is that, being br...
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ISBN:
(纸本)9781479966066
This paper introduces PRAVDA, a new approach for infrastructure based content distribution in a vehicular network. PRAVDA is built on broadcasting and pseudorandomnetworkcoding. Its first strength is that, being broadcast based, it does not need any feedback channel and thus consumes very little throughput. data is transmitted through networkcoding: multiple linear combinations of data are sent. A vehicle needs to receive a defined number of independent linear combinations to decode the data. The server will send a larger number of different linear combinations. The unreliability of broadcast is thus fought through a useful redundancy rather than through re-transmission. Finally, computation of the linear combination coefficients is done so that the overhead is the same as it would be without networkcoding.
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