Replication vs erasure coding in data centric storage for wireless sensor networks

Albano, Michele; Chessa, Stefano

http://hdl.handle.net/10400.22/6741

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Authors

Albano, Michele

Chessa, Stefano

Abstract(s)

In-network storage of data in wireless sensor networks contributes to reduce the communications inside the network and to favor data aggregation. In this paper, we consider the use of n out of m codes and data dispersal in combination to in-network storage. In particular, we provide an abstract model of in-network storage to show how n out of m codes can be used, and we discuss how this can be achieved in five cases of study. We also define a model aimed at evaluating the probability of correct data encoding and decoding, we exploit this model and simulations to show how, in the cases of study, the parameters of the n out of m codes and the network should be configured in order to achieve correct data coding and decoding with high probability.