Adaptivity of Arod Routing Protocol in Sparse and Dense Ad-Hoc Networks

Abstract

The dynamics of an ad hoc network has became vital factor for protocol design because mobility of nodes leads to unstable routing, and consequently flows encounter fluctuations in resource availability on various paths during the lifetime of a session. This has become serious, especially for those protocols based on single-path reservation, as frequent reservation and restoration of reservation-based flows increase the instability of connections. Advances in wireless research are focusing more and more on the adaptation capability of routing protocols. These protocols are interrelated to each other among various performance measures such as those related to topological changes (link breakages, node mobility, etc.) and quality of service (QoS) parameters. Sometimes, dynamic ad hoc networks resemble a dense ad hoc network. At other times, they resemble sparse network where nodes are located far away from each other. Many real networks follow the structure of dynamic ad hoc networks. Military networks, wildlife tracking sensor networks, and vehicle networks are some of these examples. In dynamic ad hoc networks, conventional routing schemes fail when the network characteristics do not fall into their applicable scenarios. Previous research has proposed a variety of routing schemes for each specific network scenario. For instance, distributed routing tables are built for efficient multi-hop, single copy routing in static and dense networks. Mobility assisted multi-copy routings are proposed in sparse networks where contemporary paths might not exist. After having review on these protocol and using some specific characteristic from these protocol we have designed a new routing algorithm that can work well in dense as well as sparse network. With the advantages of the existing schemes in mind, we introduce a new routing scheme, Adaptive Routing in Dynamic ad hoc networks (AROD), which is a seamless integration of several existing schemes.