Power balance broadcast in wireless mobile ad hoc network

• Main Authors: Hsiu-Ping Tsai, 蔡秀萍
• Other Authors: Jang-Ping Sheu
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/68018597119490908934

碩士 === 國立中央大學 === 資訊工程研究所 === 91 === Broadcasting is an important operation in a mobile ad hoc network (MANET). A straightforward approach to perform broadcast is by flooding. Unfortunately, flooding will cause some problems such as redundancy, contention, and collision. The Power-consuming features of flooding will lead to rapid battery exhaustion which will cause network unreliable. Hence, how to balancing remaining power of mobile hosts is a critical issue for a MANET. Our proposed power balance broadcast algorithms incorporate the residual battery energy of hosts into rebroadcast criterion. Each host rebroadcasts with a rebroadcasting probability, which is dynamically calculated by hosts’ residual power, number of neighbors, and average residual power of neighbors. Hence, low-power hosts broadcast with lower probability and high-power hosts broadcast with higher probability. We inhibit low-power hosts from frequently rebroadcasting to balance the remaining power of hosts and extend the lifetime of the network. According to the simulation results, power balance broadcast algorithms compared with the flooding approach can increase network lifetime by around 40%, reduce the standard deviation by 35%, and save a half of rebroadcasting. Our approach can balance the remaining power of hosts with high reachability, even in high mobility environments.