CDMA网络中无线接入预测模型研究

基于CDMA网络拥有的软容量特点和小区呼吸功能提出了一种连续预测模型,并根据该模型估计负载的变化,进而在MSC的统一协调下调整QoS参数以提高网络的性能.通过对网络的采样得到接入和连接拆除数据,以此作为依据估计系统负载的阻滞增长结果,进而演算出密度函数,得到与信道释放率联立的负载描述方程.实验表明,模型对于空闲和繁忙的运行状况都具有很好的自适应性,能够平滑处理突发接入请求,计算代价较小.

Study on Predictive Radio Access Model in CDMA Network

Based on CDMA's soft capacity feature and it's cell breathing function, a continuous predictive model of estimating the change of load,was presented. In order to improve the feature of CDMA network we may adjust the parameters depending on the change with MSC's unitive control. The model can not only estimate the retardarce increase range for the CDMA network by the access and disconnecting data that can be gained through sampling, but also figure the density equation and builds a load simultaneous equations with channel release rate. The experiments show that the model has good self-adaptability under free or busy condition and can smooth the respond for gusty access request,and the computing cost is tiny.