A Lightweight Threshold-Based Improvement on DSDV [chapter]

Rahem Abri, Sevil Sen
2014 Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering  
One of the main research challenges in mobile ad hoc networks (MANETs) is designing adaptive, scalable and low-cost routing protocols for these highly dynamic environments. In this paper, we propose a new improvement on DSDV, which is one of the most popular proactive routing protocols in MANETs. We introduce a new metric called hop change metric in order to represent the changes in the network topology due to mobility. We determine a threshold value based on this metric in order to decide the
more » ... ull update time dynamically and cost effectively. The proposed approach (La-DSDV) is compared with the original DSDV and ns-DSDV. Simulation results show that our threshold-based approach improves the packet delivery ratio and the packet drop rate significantly with a reasonable increase in the overhead and the end-to-end delay. Mobile ad-hoc networks (MANETs) have become very popular for military applications, disaster recovery operations in which the fixed network infrastructure might not be available due to wars, natural disasters, and the like. MANETs combine wireless communication with high degree node mobility. In these dynamic networks, nodes that are within each other's transmission range can communicate directly, while those that are far apart must rely on intermediate nodes to relay messages. A routing protocol in such a network is responsible for finding/updating routes and providing communication between end points through cooperative intermediate nodes. A variety of routing protocols have been proposed for mobile ad hoc networks in the literature, but no proposed protocol has been accepted as standard yet. There are three kinds of routing protocols on MANETs: proactive, reactive and hybrid protocols. Proactive routing protocols use periodic exchange of control messages between nodes to build up a routing table. In proactive routing protocols, routes are ready before they are needed. So, two nodes who want to communicate with each other can start communication immediately by using the route available in their
doi:10.1007/978-3-319-14225-8_9 fatcat:afprpdcsnbfr3d44xgnmzdtdwi