Control bit Based Congestion Control in Mobile Ad-hoc Network using OLSR Protocol

Abstract

MANET is mobile ad-hoc network having various mobile nodes moves from position to the other position. While moving they can be at different speeds. Such that sometimes they are neighbor of given node and some time they become neighbor of other node. Each time the neighbor lists get changed. So each time each node has to upgrade the neighbor list. Each source node identifies the route by broadcast the route request. In congestion control mechanism in current research control bit is used. Before sending any data packet control signal will be send. If this control bit will be acknowledged then path is assumed to be cleared from congestion and send the packet on the route. Else alternative route will be selected. While this technique performance will be measured on the basis of different parameters like end to end delay, packet Delivery Ratio, Success rate and throughput. Under current research someparameter has improved compared to the previous mechanism. This we have tested over to the OLSR protocol and compared it with AODV based existing technique.