期刊名称：International Journal of Computer Science and Network Security
印刷版ISSN：1738-7906
出版年度：2006
卷号：6
期号：2B
页码：77-77~84
出版社：International Journal of Computer Science and Network Security
摘要：One of the key problem for Wireless Sensor Network (WSN) is the design of Medium Access Control(MAC) protocol, which medium access is the major consumer of sensor energy. TDMA-based MAC protocol is inherently collision free, and can rule out idle listening since nodes know when to transmit. Cluster-based TDMA protocol is more scalable than traditional TDMA protocol, but it introduces inter-cluster interference for which FDMA and CDMA are not good solutions due to their hardware complexity and high cost. In this paper, we present TLTS, a Two Lever TDMA Scheduling protocol, in which the first scheduling ensures that neighboring clusters collecting their member’s data during different frames in order to avoid inter-cluster interference and the second scheduling schedules members of cluster sending their data to their respectively cluster heads during different slots to avoid intra-cluster interference. Simulation results show that TLTS performs better than HEED when node density turns higher. TLTS is more practical than HEED which uses CDMA code to avoid inter-cluster interference for deploying large scale WSN.
关键词：wireless sensor networks, media access control, TDMA, energy efficiency, Intra-cluster coverage
