Performance of multiple TCP connections over different routing protocols in mobile ad-hoc networks

An ad hoc network is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any existing network infrastructure or centralized administration. Various ad-hoc routing protocols have been proposed in literature such as Destination Sequenced Distance Vector (DSDV), ad-hoc On-demand Distance Vector (AODV) and Dynamic Source Routing (DSR). TCP/IP is the most widely used transport protocol for data services such as file transfer (ftp), email and www browsing. Due to these reasons, its use over mobile ad-hoc networks is a certainty. TCP primarily designed for wireline networks, faces performance degradation when applied to the ad-hoc scenario. Earlier work focussed on comparing the performance of different routing protocols with a single TCP connection. In this paper, we study the performance of multiple TCP connections over various ad-hoc routing protocols. The performance metrics of interest are the TCP throughput and the coefficient of fairness.