Cross Layer Based Virtual Node Layer for Reactive MANET Routing

Cross Layer Based Virtual Node Layer for Reactive MANET Routing
Authors : Prof.Rekha Patil, Shveta R. Shah
Publication Date: 30-08-2012


Author(s):  Prof.Rekha Patil, Shveta R. Shah

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Vol.1 - Issue 6 (August- 2012)

e-ISSN:   2278-0181


The Virtual Node Layer (VNLayer) is a cluster based programming abstraction for a Mobile Ad-Hoc Network that provides sharable virtual nodes emulated by the network nodes. The VNLayer approach simplifies software development for MANET by providing the developers an abstraction of a network divided into fixed geographical regions, each containing a virtual server (virtual nodes) for network services. In this work, we propose an improvement over Cluster based routing with an aid of VNLayer and updating AODV with VNLayer. A cross layer based method is proposed whereby the network layer will fragment or decide the packet sending rate based on estimated bandwidth, information provided by MAC layer. This work deals with enhancing AODV routing protocol using virtual nodes. VNLayer defines fixed geographical regions. In each region, a number of mobile nodes collectively emulate a virtual node, which provides services and relays packets. As a clustering scheme, the VNLayer approach can theoretically improve the efficiency and reliability of MANET protocols. As a general programming abstraction, the VNLayer hides underlying complexities from protocol developers and can be shared by multiple applications. In this work, we use simulation to determine the impact on the performance of the protocol. Simulation results show that the proposed protocol performs better even at higher load. Results justify the theoretical performance improvement claims.


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