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为了在HFC网络上实现交互式业务 ,人们对基于HFC网络的介质访问协议进行了广泛的研究 .已出现的几种基于HFC的MAC协议基本上都采用了竞争与预约相结合的访问机制 .基于CDMA的HFC是新一代的HFC系统 .本文提出了一种基于CDMA的双向HFC网络竞争与预约相结合的上行信道多址接入方式 .并且为该协议系统建立了四状态Markov链分析模型 ,对该协议进行了性能分析 ,并给出了计算机实验结果与分析 .
In order to realize the interactive service on the HFC network, the media access protocol based on HFC network has been extensively studied.However, several HFC-based MAC protocols have basically adopted the competition and reservation access mechanism.Based on the HFC CDMA HFC is a new generation of HFC system.This paper presents a CDMA-based bidirectional HFC network competition and reservation combined uplink channel multiple access method.And for the protocol system established a four-state Markov chain analysis model, The protocol performs performance analysis and gives computer experimental results and analysis.