Providing Strict Quality of Service in HSDPA for Real Time Services

Increasing demand for high data-rate real time services has led to the use of shared channels in the forward link for real-time services in 3G wireless networks, such as HSDPA. Strict and differentiated QoS requirements for real-time services, along with time varying channel capacity impose a great deal of challenge on the MAC-hs scheduler. In this paper, the authors present their policy-based scheduling algorithms to support differentiated QoS requirements along with the HSDPA network simulator in OPNET that they developed with newly introduced features, such as link adaptation, HARQ, fast scheduling at NodeB and quality based admission control.