一种自适应的扇型微蜂房式带宽预留通信模式  

A Self-adaptive Bandwidth Reservation Scheme for Sectored Cellular Communications

作　　者：叶钢[1] YE Gang　

机构地区：[1]浙江丽水职业技术学院,机电信息分院,浙江,丽水,323000

出　　处：《电脑知识与技术（过刊）》2007年第2期393-395,共3页Computer Knowledge and Technology

摘　　要：在目前的跨区域连接方式中,扇型微蜂房式的网络系统比传统的微蜂房式系统有更高的传输速度.文中介绍了一种自适应的带宽预留模式,这种模式使用了一种神经模糊带宽预留估计量的技术,经过证实,这种技术能够减少客户连接时被强行终止的概率.在这种带宽预留模式中,使用一种通道借用技术能够在实时通信时,减少新的呼叫受阻现象的发生.通过分析强行终止的客户连接和呼叫受阻的概率事件,仿真结果表明,采用扇型微蜂房式的网络系统比传统的固定带宽预留模式要有更好的性能.The handoff events occur at a much higher rate in sectored cellular networks than in traditional cellular systems. In this paper, a self-adaptive bandwidth reservation scheme, which employs a neural fuzzy bandwidth-reserving estimator, is proposed to reduce the forced termination probability. Meanwhile, a channel borrowing technique is used to decrease the new call blocking probability of real-time traffic. The simulation results show that our scheme can achieve superior performance than traditional fixed bandwidth-reserving scheme in sectored cellular networks when performance metrics are measured in terms of the forced termination probability and the new call blocking probability.

关 键 词：带宽预留 无线网络 扇型天线 服务质量 神经网络 模糊逻辑 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论;自动化与计算机技术—计算机科学与技术]