期刊名称：International Journal of Computer Science and Network Security
印刷版ISSN：1738-7906
出版年度：2007
卷号：7
期号：9
页码：110-115
出版社：International Journal of Computer Science and Network Security
摘要：In Wireless networks, energy saving is a very important research issue to increase the life time of these networks. In this paper, we propose ES-MAC, a collision free energy efficient MAC protocol for wireless networks. ES-MAC is based on IEEE 802.11. ES-MAC uses power saving mechanism of IEEE 802.11 to save energy consumption. IEEE 802.11 squanders energy and increases latency because of overhearing, over-transmission and packet collisions. IEEE 802.11 does not eliminate the hidden and the exposed terminal problems in multi-hop environment which causes energy consumption and throughput degradation. ES-MAC eliminates these problems by informing, all nodes having logical 2-hop distance from the receiver node, about the data transmission. The receiver centric logical 2-hop message passing mechanism in ES-MAC eradicates the hidden terminal and the exposed terminal problems, which is a key advantage of ES-MAC.
