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：11
页码：2852-2862
出版社：Shri Pannalal Research Institute of Technolgy
摘要：Mobile Ad-hoc network (MANET) is a collection of mobile nodes, which form a wireless network without the use of an existing infrastructure. MANET's are usually characterized by random mobility of nodes, nodes arbitrarily entering and leaving the network and variable transmission range of nodes. These characteristics make MANET links to be intermittent and the topology to be highly dynamic. In this research work proposed two concepts, one is to reduce the overhead caused unnecessary transmission of hello packets and second to preemptively discover routes in cases of a link breakage, which make a path useless. In this concept, the nodes are not participating in the active route or route discovery, reduce the unnecessary hello packet transmissions by nodes. This research work also improves the packet delivery ratio by finding routes preemptively before the last route becomes unavailable to the source. In this research work applied various metric such as packet delivery ratio, packet dropped due to no-route, average end-to-end latency, average route discovery latency, route discovery frequency, routing overhead, number of hellos messages. These metric are compared with ENHANCED_AOMDV and AOMDV. The simulation is done using NS2. The simulation result showed to increases packet delivery ratio, reduces end-to-end delay, increased route discovery latency and frequency, reduce overhead caused due to hello messages and packets dropped due to link failure or no route availability in the network.
