Dynamic Delegation-Based Efficient Broadcast Protocol for Asynchronous Wireless Sensor Networks

摘要

In broadcast for asynchronous wireless sensor networks (WSNs), delegation refers to a sender node delegating an uncovered node to a neighbor node already received the broadcast packet. Conventional delegation schemes make their delegation decision based on incomplete information and do not change the decision anymore, which may induce inefficient transmission or collision. We propose a dynamic delegation-based efficient broadcast (DDEB) protocol for asynchronous WSNs. DDEB dynamically delegates an uncovered node to a sender with the best link quality to it so far. It can adapt to the change of link quality and broadcast process. Moreover, it can solve the inefficient transmissions and conflicts problem in quadrilateral topologies. Simulation results show that DDEB can reduce the energy consumption, message cost, and broadcast delay.