Performance Analysis of the LWQ QoS Model in MANETs

Quality of Service (QoS) is essential in Mobile Ad Hoc Networks (MANETs) in order to satisfy communication constraints, e.g. delay, as set in real-time applications. Traffic from such applications is normally treated as high-priority in contrast to non delay sensitive applications such as FTP or e-mail, which are largely delay tolerant and have their flows treated as low-priority in the network. This paper analyses the performance behaviour of a recently proposed QoS model, notably LWQ, with respect to the number of high priority flows under a variety of mobility conditions. Our simulation results reveal that the number of high priority flows and different mobility states have a critical impact on the mean end-to-end delay and throughput of high priority traffic achieved by the LWQ QoS model.