Abstract: This paper studies a proxybased scheme to improve the performance of Internet Access in WCDMA, and develops a queuing model for its analysis. By exploiting the relative delay tolerance of data service, new Scheme can reduce average response time while keeping high network utilization. Furthermore, analytical results show that the key factor affecting average response time is the number of parallel channels. Therefore we studied the channel configuration and performance optimization of such system, and developed an Adaptive Channel Adjustment Algorithm (ACAA) to support the system in a varying environment. Simulation results show that the ACAA can reduce average response time significantly on unknown and possible varying traffic conditions.

Key words: WCDMA, wireless Internet access, proxy