An Adaptive Bi-Threshold-Based On-Demand Energy-Efficient Multicast Routing Protocol for Wireless Ad Hoc and Sensor Networks

摘要

Energy efficient multicast is a crucial issue in wireless ad hoc and sensor networks. In this paper, we propose an adaptive bi-threshold-based on-demand energy-efficient multicast routing protocol EAP, which is aimed to achieve reduced energy consumption and prolonged network lifetime. For this purpose, EAP introduces two thresholds: One is link power threshold, which is to avoid use of over-long links in a multicast tree so as to reduce the total power for multicasting data packets; the other is energy protection threshold, which is used to discourage energy critical nodes from joining a multicast tree as relay nodes, whenever possible. We elaborate how these two thresholds can facilitate the on-demand energy-efficient multicast tree constructions and also how they can be adaptively updated as network evolves while causing little protocol overhead. We present detailed design description of EAP. Simulation results show that EAP can achieve high performance in terms of network lifetime with little protocol overhead.