Energy-efficient route-aware Mac protocols for diffusion-based sensor networks
Injong Rhee, Jang-Won Lee · NCSU Libraries Repository (North Carolina State University Libraries) · 2004
Route-awareness allows sensor nodes to save energy by "sleeping" opportunistically when they are not on the routing paths.It meshes well with both contention and schedule based MAC schemes to form a class of route-aware sensor MAC (RASMAC) schemes.This paper explores the tradeoffs between energy consumption and performance such as throughput and delay which are enabled by RASMAC for implementing diffusion-based sensor applications.We found that both contention and schedule based schemes provide a far richer set of design choices, especially over low energy budget, than existing schemes.Our simulation results show that route-aware TDMA shows better energy-delay tradeoffs than route-aware contention-based MAC schemes, and exhibits roubust operation under various configurations.