An Energy-Efficient Diagonal-Based Directed Diffusion for Wireless Sensor Networks

• Main Authors: Yau-Wen Nian, 粘耀文
• Other Authors: none
• Format: Others
• Language: en_US
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/28307653650748271102

碩士 === 國立中央大學 === 資訊工程研究所 === 90 === In this thesis, we present a new energy-efficient directed diffusion protocol by using a proposed diagonal-based hexagonal-mesh scheme for a wireless sensor network. The wireless sensor network is more reasonable to carefully build a fixed-topological wireless network environment than the conventional MANET due to the low mobility. Therefore, all sensor nodes are arranged into a fixed-topological wireless network structure, namely the hexagonal-mesh, while the MAC protocol is adopted the periodic active-and-sleep model. Wireless sensor networks use battery-operated computing and sensing devices. The directed diffusion is mainly operated on the diagonal-paths of the hexagonal-mesh under the energy-efficient consideration. To achieve the energy-efficient purpose, our diagonal-based directed diffusion scheme has the following main contributions; (1) a periodic active-and-sleep MAC protocol on TDMA channel model is designed, (2) a periodic backbone-path-exchange scheme is periodically performed on the diagonal-mesh to consider the per-node fairness problem, (3) three kinds of directed diffusion communication applications are developed based on the diagonal-based scheme. Finally, performance analysis result is finally demonstrated to illustrate the energy-efficient achievement of our proposed scheme.