无线网络中非语音业务降质的接纳控制算法

Admission control algorithm for degraded non-voice services in wireless network

针对切换业务固定预留带宽会降低带宽利用率的问题,提出切换业务动态预留带宽的接纳控制算法,根据用户中断率和阻塞率的比例关系计算并判断预留带宽,利用剩余带宽资源进行接纳判决,在此基础上,运用动态预留带宽策略,对业务进行两次降质处理,进而给出一种非语音业务降质的接纳控制算法,以降低切换语音业务的中断率和语音业务的阻塞率。仿真结果表明,与传统的算法相比,新算法可降低新业务呼叫阻塞率和切换业务呼叫掉线率,并能提高系统带宽利用率。

An admission control algorithm of switching service bandwidth dynamics reserved is proposed in this paper to solve the problems of the reduced switching service bandwidth utiliza- tion. The algorithm is based on the ratio between the user interrupt rate and blocking rate to cal- culate and decide the reserved bandwidth, and to judge the remaining bandwidth resources. At the same time, an admission control algorithm for degraded non-voice services in wireless net- work based on the admission control algorithm for switching services of bandwidth reserved fix- edly is proposed. This algorithm mainly use the services priorities strategy to cut down the band- width of the non-voice services twice for reducing the voice service blocking rate and dropping rate. Simulation results show that compared with other traditional algorithms, the new algo- rithms can reduce the new call blocking probability and handoff call dropping rate, and therefore can improve the bandwidth utilization.