IEEE 802.16系统中带有收益因子的动态呼叫接纳控制算法  

Revenue-aware dynamic call admission control algorithm in IEEE 802.16 systems

作　　者：徐晓希[1] 朱新宁[1] 徐春秀[1] 

机构地区：[1]北京邮电大学信息与通信工程学院,北京100876

出　　处：《计算机应用研究》2009年第8期3095-3097,共3页Application Research of Computers

基　　金：国家自然科学基金资助项目(60772109)

摘　　要：针对IEEE 802.16 OFDMA系统,提出了一种考虑运营收益并且动态调整预留信道的呼叫接纳控制算法。该算法将一个连接申请潜在的运营收益值作为接入优先级函数的因子,从而提高系统的运营收益;其次,算法根据系统内资源的使用情况动态调整预留信道,在降低系统掉话率的同时,也尽可能地将呼叫阻塞率保持在较低水平。将所提算法与传统接纳控制方法进行了仿真比较,结果表明该算法能够有效控制系统掉话率和阻塞率,达到用户使用满意度要求,同时增大系统运营收益。This paper proposed a call admission control algorithm in IEEE 802.16 OFDMA systems, which took the revenue of the service providers into consideration and adjusted the threshold of reserved guard channel dynamically. First, introduced the revenue generated by accepting a connection in the admission priority function to produce high revenue of the system. Second, the proposed algorithm adjusted the reserved channel according to the state of system dynamically so as to reduce the call dropping probability （CDP） and the call blocking probability （CBP） simuhaneously. The simulation results show that the proposed algorithm can decrease CDP and CBP effectively to achieve high users＇ satisfaction degree, while increase the revenue of the network at the same time.

关 键 词：正交频分多址接入 呼叫接纳控制 运营收益 掉话率 阻塞率 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]