Université de Limoges
In this paper, the authors tackle the problem of providing end to end reliable transmissions in a randomly deployed wireless sensor network. To this aim, they investigate the simultaneous use of gradient broadcast routing (for its inherent adaptability to any network topology and its changes), fountain codes (for their universal property) and intra-flow network coding (to introduce packet diversity in redundant copies). They present the impact of the proposed XLT-GRAB strategy on a realistic network. This paper permits to highlight that, compared to basic gradient broadcast routing, the strategy not only improves the reliability and the delay in the network but also clearly increases its lifetime.