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本文在保持CDMA蜂窝通信系统变速率话音固定接入的同时,针对数据业务的需要,提出了一种随机预约分组接入方法。在假设数据分组的到达为泊松分布的情况下,应用EPA(平衡点分析)方法对接入方案的性能如通过率和时延等进行了分析。数值仿真结果显示,在保持较小时延的同时,该方法显著提高了系统支持接入的数据终端数。
In this paper, while keeping the variable rate voice fixed access of CDMA cellular communication system, aiming at the need of data service, a random access reservation packet access method is proposed. Assuming that the arrival of data packets is Poisson distribution, the performance of access schemes such as pass rate and delay are analyzed by using EPA (Balance Point Analysis) method. The numerical simulation results show that this method can significantly increase the number of data terminals supported by the system while maintaining a small delay.