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文章研究QoS优化下WCDMA系统的上行接入控制算法。从QoS分层结构,可度量参数出发,结合新用户呼叫到达率和用户切换到达率,提出WCDMA上行信号呼叫接入控制算法,考虑和平衡新接入用户阻塞率和已接入用户中断率。通过满足不同业务需要的QoS优化策略来控制上行允许接入用户,从而保证系统有稳定的通信质量。仿真分析结果表明,文中给出算法使系统阻塞率和掉话率下降,系统性能得到改善。
The paper studies the uplink access control algorithm of WCDMA system under QoS optimization. Based on QoS hierarchical structure and measurable parameters, this paper proposes a call admission control algorithm for WCDMA uplink signals based on the call arrival rate of new users and the handover arrival rate of users, and considers and balances the blocking rate of new access users and the rate of accessed users. The QoS optimization strategy that meets different business needs is used to control the uplink access users so as to ensure the stable communication quality of the system. The simulation results show that the proposed algorithm reduces the system blocking rate and call drop rate, and improves the system performance.