Performance Improvement of Ad-Hoc Networks with ZRP using Route Maintenance

Abstract

Zone Routing Protocol (ZRP) is a hybrid routing protocol for Ad-Hoc networks. This protocol divides the network into overlapping routing zones and runs independent protocols that study within and between these zones. Intra-zone protocol (IARP) operates within a zone and learns all possible routes. So, all nodes inside of a zone know about its zone topology very well. This protocol that will run in an intrazone is not defined, but can be any proactive protocol. Different zones may operate with different protocols. Interzone protocol (IERP) is a reactive protocol which consist of a source node by finding a destination node which is not located inside of the same zone by sending RREQ messages to all border nodes until the destination node is found. The routing zone diameter is variable and this should be chosen optimally for a scaled topology. ZRP is based on two procedures: Intrazone Routing Protocol (IARP) and Interzone Routing Protocol (IERP). Through the use of IARP, each node knows the distance which separates it from other node present in its routing zone. The true protocol IARP is not specified and can be implemented starting from various derivated protocols based on “Distance Vector Protocol� such as AODV, for example. In this research, we evaluate and measure using simulation the different maintenance strategies of a route in Ad-Hoc networks with ZRP by employing the Floyd-Warshall algorithm, with the objective of obtaining a better performance.