SDLAR: Self Adaptive Density-Based Location-Aware Routing in Mobile Adhoc Network
Nowadays, location aware routing protocols are accepted potentially, scalable and efficient solution for routing in MANET. The advantages of these routing protocols are that they perform route discovery in a smaller region known as request zone, instead o
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Abstract Nowadays, location aware routing protocols are accepted potentially, scalable and efficient solution for routing in MANET. The advantages of these routing protocols are that they perform route discovery in a smaller region known as request zone, instead of doing route discovery in the entire network. This shows that the size and shape of the request zone play a major role to enhance the performance of routing procedure. Hence, the paper proposes an efficient scheme which focuses on creation and adjustment of size of request zone to find a stable path with less communication overhead. The protocol confines route discovery within an ellipse shaped request zone to reduce the routing overhead and achieve path stability. Further, the proposed protocol uses a density metric to resize the request zone for successful route discovery. Simulation results show that the proposed protocol can help to improve the path stability with lesser routing overhead than LAR-1. Keywords MANET
SDLAR LAR-1 Request zone Expected zone
1 Introduction A mobile ad hoc network is a group of autonomous nodes which can change their topology dynamically. These nodes work as a host as well as routers in the network. Hence, the mobile nodes are the key elements to perform the routing functions. In multi-hop scenarios the nodes have to be dependent on each other and require routing schemes to forward messages. To route the messages in such environments P. Mishra (&) S.K. Raina B. Singh Department of Computer Science and Information Technology, JIIT, Noida, India e-mail: [email protected] S.K. Raina e-mail: [email protected] B. Singh e-mail: [email protected] © Springer Science+Business Media Singapore 2016 R.K. Choudhary et al. (eds.), Advanced Computing and Communication Technologies, Advances in Intelligent Systems and Computing 452, DOI 10.1007/978-981-10-1023-1_40
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(multi-hop), routing protocols initiate the route discovery process by sending the route request packets in the network to make sure that the destination node will receive the route request and then reply. Flooding the request can be costly in terms of wasted bandwidth and can produce huge routing overhead. Therefore, the location based routing protocols are proposed as a novel solution to deal with these issues. The location aware routing protocols enhance the route discovery process by utilizing the location information of nodes and do route discovery in limited request (forwarding) zone to prevent blind flooding of RREQ in the entire network. In addition, by defining the limited request zone they also reduce a number of nodes which reduce the possibility of collisions as well frequency of re-route discovery. These protocols flood request only when they cannot find the path to destination in the request (forwarding) area. As we know the request zone is defined as a region for flooding therefore, the shape and size of the request zone can play a vital role to enhance the performance of routing protocol. If we define smaller request zone
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