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 \cite{xnp,MOAP,Deluge,kw05,Infuse,Sprinkler} 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
\cite{RScode}, 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.
Paper:
Return to the publication list
Return to the Sandeep's home page