无中心选址通信网的话务分析与模拟

Analysis and Simulation of Traffic Characteristic for Multi-Channel Access Network without a Central Controller

无中心多信道选址网是一种新型900 MHz移动通信系统,按照CCIR课题71/8和中国的使用情况,对该系统的1个控制信道和79个通话信道的话务特性进行了分析,讨论了不同服务方式的用户容量、信道利用率、过载能力、呼损率与等待时间等参量;并且在不考虑干扰的条件下用IBM-PC微机作了话务模拟,当A≥79e时系统过载而变得不稳定,可采用限时服务(如3分钟)加以防止,从而获得了一些有益的结论,较好地解决了CCIR所提频谱效率最优化的问题。

Multi-Channel access network without a central controller is a new type 900MHz mobile communication system. According to the CCIR question 71/8 and situation in China, the traffic analysis and traffic simulation without interference for one control channel and 79 traffic channels are finished on IBM personal computer. The user capacity, channel efficiency, overload capacity, percent of call lost and waiting time, etc., are discussed. When A≥79 e system overload and become unstable, it can be protected by using time-limited (say, 3 minutes) service. The CCIR question about the system hence got solved better.