Performance evaluation of routing protocols for qos measures in MANETS

Mobile adhoc network (MANETS) is a collection of wireless nodes which dynamically creates a wireless network. The mobility of nodes in such type of network results in frequent changes making the routing in MANETs a challenging job. The routing protocols in MANETs should be more dynamic so that they quickly respond to topological changes. The routing table of each router in adhoc network must kept up-to-date. However, MANETS have specific characteristics like dynamic topologies, limited bandwidth and limited physical security. MANETS are mainly categorise in two types of routing protocol Proactive protocol (e.g. Distance Sequence Distance Vector- DSDV) and Reactive Protocol (e.g. Ad Hoc On Demand Distance Vector- AODV, Dynamic Source Routing- DSR). The present paper focuses on study and performance evaluation of these categories using NS2 simulations. The performance of the protocol is analyse by evaluating Packet delivery ratio, End to End delay and average throughput. The comparison shows that DSR performes better in terms of routing overhead.