QoS Aware Stable path Routing (QASR) Protocol for MANETs

Dynamic topology and limited bandwidth of mobile ad hoc networks (MANETs) make end-to-end QoS support an inherently complex and difficult task. Most of the current QoS routing protocols propose routing based on two QoS metrics. This paper introduces a QoS aware on demand routing protocol that uses signal stability as the routing criteria along with other QoS metrics. The proposed QoS Aware Stable path Routing (QASR) is designed over Signal Stability based Adaptive routing (SSA) and aims to select stable QoS routes that can survive for longer period of time. Using the NS-2 simulator, we have conducted an extensive set of simulations to verify the effectiveness of QASR with a wide variety of mobility patterns and network loads. A comprehensive performance analysis of QASR and comparison with other QoS aware routing for MANET is also presented in the paper.