Author's Name:	Dr. S. Meenakshi Sundaram, S. Sreedhar Kumar & K. Kalyana Krishnan
Subject Area:	Science and Engineering
Subject	Computer Science
Section	Research Paper

Mobile Ad hoc Networks (MANETs), First in First out (FIFO), Weighted Fair Queuing (WFQ) model, OSLR protocol, Quality of Service QoS.

Mobile Ad hoc Networks (MANETs) have unique mobility characteristics and are used for many applications similar to wired networks. These networks are capable of providing services to the users at acceptable standards and have become highly essential in our daily life. The performance of MANETs is largely dependent on routing protocols. With high traffic load, the processing of queued packets has significant effect on overall end-to-end performance and congestion avoidance. The data packets that are to be transmitted from a node are queued in a single line and forwarded using First in First out (FIFO) or using a Weighted Fair Queuing (WFQ) model. The Optimized Link State Routing protocol is an optimization of pure link state routing protocol and it is designed mainly for mobile ad hoc networks. It has a table driven approach i.e. it exchanges the information with other nodes of the network. Among routing protocols available to deliver data packets from source to destination, OSLR protocol constantly updates topology information and routes which are available. It is observed that the control traffic overhead decreases with modifications in OLSR routing protocol using traffic shaping based on packet priority. Investigations are carried out for multimedia traffic with FIFO and WFQ for various Quality of Service QoS parameters namely PDR, end to end delay, jitter and no. of TC packets.