Mobile Ad-hoc Networks |
Foundation of Computer Science USA |
MANETS - Number 1 |
None 2010 |
Authors: Prof. Neeraj Agrawal, Dr. Sanjeev Sharma, Prof. Arun Nahar |
e23d6dd6-3b68-48a4-bfb4-212753baac18 |
Prof. Neeraj Agrawal, Dr. Sanjeev Sharma, Prof. Arun Nahar . Analysis of CSMA, MACA & EMACA (Enhancement of Multiple Accesses with Collision Avoidance) to Support QoS under varying conditions of No. of Nodes in Ad-Hoc Wireless Networks by means of DSR Routing Protocol. Mobile Ad-hoc Networks. MANETS, 1 (None 2010), 1-7.
Ad hoc wireless network (AWN) is a collection of mobile hosts forming a temporary network on the fly, without using any fixed infrastructure. DSR routing protocol was used to evaluate the MACA and EMACA performance. Results show that the EMACA simulation performs well as compared to MACA in sense of Throughput, Total Packet Receive, Drop Packet Ratio and Average Jitter under varying conditions of no. of nodes. In DSR like all On- Demand routing algorithms, route discovery mechanism is associated with great delay. More Clearly in DSR routing protocol to send route reply packet, when current route breaks, destination seeks a new route. In this paper we will try to change route selection mechanism proactively. We will also define a link stability parameter in which a stability value is assigned to each link. Given this feature, destination node can estimate stability of routes and can select the best and more stable route. Therefore we can reduce the delay and jitter of sending data packets. We have evaluated the operation of DSR through detailed simulation on a variety of movement and communication patterns, and through implementation and significant experimentation in a physical outdoor ad hoc networking testbed we have constructed, and have demonstrated the excellent performance of the protocol.