期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2012
卷号：3
期号：2
页码：3548-3550
出版社：TechScience Publications
摘要：An Ad Hoc network is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration. Nodes in mobile and ad hoc network communicate with one another via packet radios on wireless multihop links. Because of node mobility and power limitations, the network topology changes frequently.Routing protocols therefore plays a important role in mobile multihop network communications. Routing protocols used inside ad hoc must be prepared to automatically adjust to an environment that can vary between the extremes of high mobility with low bandwidth and low mobility with high bandwidth. Most of the protocols in this category, however, use single route and do not utilize multiple alternate paths. In this paper, we prepared a bandwidth efficient multicast routing protocol for ad hoc network. A Hybrid Routing protocol under bandwidth constraints (HRP-BC) has been proposed. The hybrid routing protocol combines the advantages of proactive routing protocol and reactive routing protocol. The routing is initially established with some proactively prospected routes and then serves the demand from additionally activated nodes through reactive flooding. The proposed protocol achieve low communication overhead, and achieves high multicast efficiency this protocol improves existing routing protocols by creating a mesh and providing multiple alternate routes. The protocol considers the following 1) Route setup as routing Distance of path, 2) Load at the node as traffic and, 3) Bandwidth as queue length of the node. The proposed scheme utilizes the path information, traffic and bandwidth resource information at each node, for selection of route path, and compared to traditional DSR schemes. The performance of HRPBM is evaluated through simulations. The simulation of the protocol is done on NS-2 simulator. The simulation results of this routing protocol shows that this protocol achieves better performance to the DSR protocol for the maintenance overhead and the path reliability. It reduces congestion in network and improves bandwidth utilization, thus provides efficient use of bandwidth in the ad hoc network.a
