Proactive Reliable Bulk Data Dissemination in Sensor Networks.
Limin Wang, Sandeep S. Kulkarni · 2005
One of the problems in network reprogramming is to guarantee 100 percent delivery of a large amount of data (the entire binary image) in a lossy wireless channel. All the existing protocols on network reprogramming [1–6] use automatic repeat request (ARQ) scheme to recover from packet losses. We propose a new reliability scheme which is a hybrid approach of forward error correction (FEC) and ARQ. We perform a case study on MNP, a multihop network reprogramming protocol, and study the effect of adding two different FEC codes: simple XOR code and Reed-Solomon (RS) codes [7], to MNP. We evaluate the new reliability approach using TOSSIM. The simulation results show that adding simple XOR code to MNP can achieve up to 10 % improvement on reprogramming speed and up to 18 % reduction on active radio time (the major part of energy consumption). And we show that RS codes perform even better.