混合信道分配参数分析及自适应混合信道分配方案

对混合信道分配（Hybrid Channel Assignment,HCA）中的动静信道比例与阻塞率之间的关系进行了分析，分析表明，不同动静信道比的HCA方案在不同的话务量情况下呈现出不同的性能，无法在各种负荷下均保持良好的性能，为此，提出了一种根据话务量变化自适应调整动静信道比例的HCA方案，该方案能够在各种话务量负荷下均保持良好的阻塞率性能，在话务量统计均匀分布的情况下，对此方案者了系统仿真，结果表明该方案比固定动静信道比例的HCA方案具有更好的话务量跟随能力和阻塞率性能。

Parameter Analysis of Hybrid Channel Assignment and Application to Adaptive Hybrid Channel Assignment

The impacts of the fixed-to-dynamic channel number ratio on the call blocking probability in hybrid channel assignment (HCA) are investigated. Analysis shows that HCA scheme with different fixed-to-dynamic channel number ratio could present best performance under different load of traffic. A novel HCA scheme is proposed, which adjusts the fixed-to-dynamic channel number ratio according to traffic density and always presents best performance despite the varying of traffic. Simulations are carried out for a system with uniform traffic distribution, and the results show that the new scheme outperforms the conventional HCA in terms of traffic load adaptation and call blocking probability.