期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2013
卷号：2
期号：2
页码：374-378
出版社：Shri Pannalal Research Institute of Technolgy
摘要：The performance of Ad-hoc network is calculated by the number of packets successfully delivered to the destination. In multi-hop wireless networks, every node acts as middle node to forward packets to other nodes. To increase the overall network performance, nu mber of packets delivered to the destination successfully must be increased. In the congested network the coordination between the active nodes must be maintained to increase network performance .In this paper, we discuss medium access protocol, MACA .The Hidden terminal problem and exposed terminal problem had been solved by using MACA. In this paper we review MACA and highlight the NAV attack which is possible in this protocol .We also propose the new technique for the prevention of NAV attack. When triggers the NAV attack in MACA protocol overall network performance degrades.
