Networking and Communication Engineering

R. Gandhiraja ¹

Affiliations
1 Department of Computer Science and Engineering, VelTech HighTech Engineering College, TamilNadu, IN

Abstract

A new Congestion control mechanism for wireless link, referred to as RAMAF (Remove and Accept Most Active Flows), has been proposed. Traffic flows in wireless networks cause congestion and when there is congestion, in general beginning transmission of a new flow leads to further congestion. In basic Flow Awareness Networks new flows generally cannot begin transmission when the network is congested. This new solution will ensure short acceptance times of new streaming flows, without bothering if the outgoing link is congested or not. In addition to this, it allows for more effective transmission of elastic flows. This solution can be used in both wired and wireless FAN. Outcome of cautiously chosen reproduction conduct test prove that TCP New Jersey integrated with the RAMAF mechanism get together the requirements of the wireless transmission in FAN.

Keywords

Congestion Control, Flow-Aware Networks, RAMAF, Quality of Service, Wireless Transmission, TCP.

Full Text

     

R. Gandhiraja ¹, A. Lenin Fred ²

Affiliations
1 Department of Computer Engineering, Shri JJT University, Jhunjhunu, Rajasthan, IN
2 MAR EPHRAEM College of Engineering, Marthandam, Tamilnadu, IN

Abstract

In mobile ad hoc networks, there is no centralized infrastructure to monitor or allocate the resources used by the mobile nodes. The absence of any central coordinator makes the routing a complex one compared to cellular networks. The Ad hoc On Demand Distance Vector (AODV) routing algorithm is a routing protocol designed for ad- hoc mobile devices. AODV uses an on demand approach for finding routes. AODV and most of the on demand ad- hoc routing protocols use single route reply along the reverse path. Due to rapid changes of topology the route reply may not arrive to the source node resulting in sending several route request messages and degrading the performance of the routing protocol. The extended AODV called Reverse Ad Hoc On Demand Vector (R-AODV) protocol uses a reverse route discovery mechanism and performs well when link breakage is frequent. In this paper we compare the QoS parameters such as Throughput, Delay and Packet Delivery ratio of both traditional AODV and R-AODV using TCP New Reno as the traffic source. Simulation results show that R-AODV performs well when link breakage is frequent.

Keywords

AODV, R-AODV, MANETs, QoS Parameter & TCP New Reno.

Full Text