New scheduling and CAC scheme for real-time video application in fixed wireless networks

Abstract

IEEE fixed 802.16 network aims at providing broadband wireless access with quality of service (QoS) guarantee. In all its services, real-time video traffic plays an impeditive role because of its varying bit-rate. In this paper, by taking advantage of traffic characteristics, a new scheduling and call admission control (CAC) scheme for real-time video traffic in IEEE fixed 802.16 networks is proposed. Simulations using real life video traces show that the proposed scheme provides significant improvement in throughput while maintaining QoS performance at an acceptable level.