Centralized Energy-Efficient TDMA MAC Protocols for Wireless Sensor Network

• Main Authors: Wun-Bin Huang, 黃文彬
• Other Authors: Yaw-Huei Chen
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/44925579872972582279

碩士 === 國立嘉義大學 === 資訊工程學系研究所 === 94 === Wireless sensor network, which is a special type of ad hoc networks, has many applications in various fields. Because of the difficulties of changing or recharging batteries for sensor nodes in many applications, how to save energy becomes a crucial issue for wireless sensor network. In order to reduce energy consumption of the sensor nodes, new communication protocols are needed for decreasing the amount of data processing and transmission as well as increasing the amount of sleep time of the sensor nodes. This research devises novel centralized energy-efficient TDMA (Time Division Multiple Access) MAC (Medium Access Control) protocols for wireless sensor network. The main idea is to assign time slots to each node adaptively so that it would reduce the level of packet collision, idle listening, overhearing, control overheads, and the latency of packet transmitting. Although the proposed protocols are centralized TDMA-based protocols, they still can handle topology changes very well. Comparing to TMAC and TRAMA, experimental results indicate that the proposed protocols have better performance in saving energy and reducing latency.