Channel-aware soft bandwidth guarantee scheduling for wireless packet access

The huge demand and growth of high-speed mobile data applications drive the development of the next generation wireless systems. The emerging 3G cellular networks provide new wireless access technologies for high-speed downlink packet access. The variable nature of wireless channel quality brings up challenges and opportunities for wireless system design. By utilizing channel state information, the next generation wireless packet systems provide high data rate communications with adaptive modulation and coding. To provide quality of service (QoS) in such systems is an important engineering issue. In this paper, we propose a novel scheduling algorithm that supports assured QoS. Due to the unpredictability and volatility of wireless medium, wireless QoS design tends to focus on soft QoS guarantee instead of hard one. The proposed scheme can effectively guarantee soft rate reservation and provide high-speed connections with channel-aware radio resource allocation without compromising fairness.