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Multipath Routing Protocols of Adhoc Networks (LCR)

N. Nithya, I. Priya


AOMDV is based on a prominent and well-studied on-demand single path protocol known As Ad Hoc On-Demand Distance Vector (AODV). AOMDV extends the AODV protocol to discover multiple paths between the source and the destination in every route discovery. Some of the specific challenges stemming from the ad hoc network are mobility and energy constraints. The network is ad hocbecause it does not rely on a pre existing infrastructure, such as router in wired networks or access points in managed (infrastructure) wireless networks. Instead, each node participates in routing by forwarding data for other nodes, so the determination of which nodes forward data is made dynamically on the basis of network connectivity.Further, as network size increases, communication costs tend to consume a larger proportion of the limited bandwidth. Among the solutions proposed for scaling down large-sized networks, network clustering is one of the most investigated approaches. The basic idea is to select the appropriate nodes able to support additional tasks, so that routing and group communication protocols can be implemented efficiently on top of this virtual backbone. In this context, we propose an enhanced version of LCR (Layered Cluster-based Routing), a hierarchical routing protocol designed for dense and large scale networks. The key feature in this approach is the direction mechanism which limits the area concerned by establishment and maintenance of routes, and consequently reducing the number of dominating nodes involved in routing tasks


Clustering, Ad hoc Networks, Layered Cluster-Based Routing, AODV and AOMDV

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