HFC网上行信道时隙同步的性能分析

Performance Analysis of the Timeslot Synchronous in the Upstream Channel for the HFC Networks

在分析HFC网络上行信道时隙同步过程的基础上,建立在系统故障恢复情况下上行信道时隙同步过程的数学建模,重点研究了HFC网完成上行信道时隙同步所需的平均时间。文中给出了不同网络规模、冲突解析算法参数值、上行信道带宽分配策略条件下的实验结果。最后提出了优化HFC网上行信道时隙同步性能的措施。

Based on the analysis of timeslot synchronous process in the upstream channel for HFC network ,the mathematical model is built for the process of timeslot synchronous in the upstream channel, while the system is undergoing fault recovery. The paper emphasizes on the analysis of the average time in which the HFC network can complete the timeslot synchronous in the upstream channel. The experimental results under different conditions, such as network scale, parameter value of competition resolution algorithm and bandwidth allocating scheme for the upstream channel are given, and the optimizing methods are proposed.