摘要
在GPRS网络采用固定资源分配方案和动态资源分配方案的前提下,分别建立了马尔可夫模型来分析网络的容量和服务质量,数值分析的结果和仿真结果较为符合,表明所建模型是有效的。从本文的分析可以得出网络参数变化以及不同服务质量要求的数据业务对网络性能的影响规律。通过两种分配方案的比较,又可以得出:动态分配方案在降低呼叫阻塞率和保证数据用户传输速率方面优于固定分配方案。
The Markov models are generated separately to analyze the network's capacity and quality of service (QoS) under the precondition that fixed resource allocation (FRA) or dynamic resource allocation (DRA) scheme is used in GPRS network. The result of numerical analysis accords with the simulation result, which indicates the models generated are effective. From the analysis, the regulation of influence of network's parameter's changing and data traffic with different QoS request on network's performance can be obtained. By comparing the two schemes, the following result can be obtained as well, that is, DRA outperforms FRA in lowing blocked ratio of calls and guaranteeing transfer rate to data users.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2004年第2期174-177,共4页
Systems Engineering and Electronics
