Efficient Multipath Routing Protocol with Quality of Service for Mobile Ad Hoc Networks

Design of multipath routing scheme is a challenging task as its topology is very dynamic in mobile adhoc network (MANET) environments. Providing reliability is more important while designing the routing protocol. Hence, multipath routing protocol which is based on Quality of Service parameters is proposed in this paper. The QoS parameters considered are delay, bandwidth and hop count. Different types of traffic such as real- time traffic and non-real-time traffic are considered. In order to improve reliability by reducing number of retransmissions, an additional packet is generated in the case of non-real time traffic and multiple description coding is used in the case of real-time traffic. The proposed algorithm, MRQ is simulated using NS-2 and compared with the existing competing schemes - QAMR and RA-MDC. Simulation results proved that the perfomance of our scheme is better in terms of End-to-End delay, packet delivery ratio, Peak Signal Noise Ratio (PSNR) and retransmissions ratio metrics.