Conference Proceedings

Abstract

Mobile Ad Hoc Network (MANET) is a collection of mobile nodes interconnected by wireless media. Routing protocols for Wireless ad hoc networks have traditionally focused on finding paths with different link quality metrics such as minimum hop count, RSSI (Received Signal Strength Indication), SNR (Signal-to-Noise Ratio), BER (Bit Error Rate). However, such paths can include slow or lossy links, leading to poor throughput. A routing algorithm can select better paths by explicitly taking the quality of the wireless links in to account. But PSR (Packet Success Rate) is a good metric for characterizing link quality at a coarse-grained level, because it is highly dependent on the packet size and the transmission rate. Several approaches have been suggested to improve quality of the link especially on Dynamic Source Routing (DSR) protocol. In this paper we propose an adaptive multi-path Link Quality Routing Protocol which is based on two link quality metrics such as PSR (Packet Success Rate) and Delay. This protocol is adaptive to load distribution. The protocol will collect information about quality of the link during the route discovery phase and use them to choose a set of disjoint paths, and distributes the data based on QoS they provide. Each node has to monitor links and adaptively adds or removes paths whenever it is needed to achieve the required QoS. The simulation experiments will be conducted using NS-2 network simulator. We will compare the performance of the suggested algorithm to the performance of the conventional DSR