Analysis of a traffic model for GSM/GPRS
Analysis of a traffic model for GSM/GPRS
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DOI：
10.1109/pimrc.2001.965474
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发表时间：
2001-09
期刊：
影响因子：
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通讯作者：
H. Araújo;José M. Costa;L. Correia
中科院分区：
文献类型：
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作者：
H. Araújo;José M. Costa;L. Correia
对GSM/GPRS业务模型中的混合无线资源分配算法进行了评估。专用数量的GPRS信道加上GSM语音呼叫之间的空闲时间用于GPRS数据包传输。为了评估HRRA算法，它提供了一个合理的预测语音阻塞概率和分组延迟的单小区系统的模拟器。由于主要问题是正确的资源分配，结果显示的影响，一些选择和假设的整体性能。正如预期的那样，如果专用信道的数量增加太多，则阻塞概率可以达到非常高的值。对于4个载波和20 Erl业务的特定情况，专用于GPRS的4个信道仍然能够实现可承受的阻塞概率，导致15秒的平均分组延迟。结果可以用来说明的基本选项，需要采取的运营商，实施GPRS时。
A traffic model for GSM/GPRS, the hybrid radio resource allocation (HRRA) algorithm is evaluated. A dedicated number of GPRS channels plus idle periods between GSM voice calls are used for GPRS data packet transfers. A simulator was developed in order to evaluate the HRRA algorithm, which provides a reasonable forecast on the voice blocking probability and on packet delay for a single cell system. Since the major issue is the correct resource allocation, results are shown for the influence of some choices and assumptions on the overall performance. As expected, blocking probability can reach very high values if the number of dedicated channels increases too much. For the specific case of 4 carries and traffic of 20 Erl, 4 channels dedicated to GPRS still enable an affordable blocking probability, leading to a mean packet delay of 15 s. The results can be used to illustrate the fundamental options that need to be taken by an operator, when implementing GPRS.