摘要
建立了一个二维连续时间的马尔可夫链,该模型描述了GPRS业务和语音业务在一定的动态信道分配方案下对有限信道资源的共享。采用一种近似求解方法求得该马尔可夫链的稳态解,通过数值计算可以估计出GSM/GPRS网络的一些主要性能,如:呼叫阻塞率、数据平均传输速率、信道利用率等。为了验证该模型的有效性,将数值分析的结果与仿真结果进行了比较。
This paper presents a two dimensional Markov chain, which describe how the limited channels shared between GPRS and voice call traffic under a certain dynamic channel allocation scheme. An approximation method is used to obtain the steady solution of the Markov chain. And by numerical calculation some main performances of the network can be estimated, such as call blocked ratio, data average transfer rate, channel utility. In order to validate the effectiveness of the model, the numerical result is compared with the simulation result.
出处
《通信技术》
2003年第2期40-42,共3页
Communications Technology
基金
德国西门子公司与上海交通大学现代通信研究所GSM/GPRS网络仿真器开发项目资助。
