Channel-Adaptive GPS Scheduling for Heterogeneous Multimedia in CDMA Networks

Wireless packet-scheduling is a crucial component for providing quality of service (QoS) in CDMA networks. In this paper, we propose channel-adaptive rate-scheduling based on Generalized Processor Sharing (CAGPS) to guarantee minimum service rate and to provide proportional fairness among heterogeneous multimedia traffic for QoS differentiation. The CA-GPS scheduler assigns different GPS weights according to traffic priorities, to provide differentiated services under time-varying channel conditions. Soft-uplink capacity analysis is performed and used to improve the utilization of CDMA system resources. The performance analysis and evaluation of proposed CAGPS is achieved via simulation in terms of achievable throughput, delay, and proportional fairness.