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为了提高无线城域网802.16系统长时期的性能和带宽利用率,针对标准的四类服务连接提出了一种有效的接纳控制算法。它为实时服务越区切换连接预留部分带宽,通过带宽借用让非实时轮询服务连接按照优先级逐次放弃部分带宽直到最小保留速率要求,这样基站能够接纳更多的四类服务连接并最大化利用带宽。仿真表明所提出的算法降低了实时服务越区切换连接的阻塞率,提高了系统带宽利用率和非实时轮询服务连接的传输容量。
In order to improve the long-term performance and bandwidth utilization of wireless MAN 802.16 system, an effective admission control algorithm is proposed for the standard four types of service connections. It reserves part of the bandwidth for real-time service handoff connections and allows non-real-time polling service connections to give up non-real-time polling service connections partially by priority until the minimum reservation rate is required so that the base station can accommodate and maximize four more types of service connections Use bandwidth. Simulation results show that the proposed algorithm can reduce the blocking rate of real-time service handover and improve the system bandwidth utilization and the transmission capacity of non-real-time polling service connections.