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首页> 外文期刊>Journal of High Speed Networks >Resource optimization of CDMA systems for supporting integrated voice and data traffic
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Resource optimization of CDMA systems for supporting integrated voice and data traffic

机译:CDMA系统的资源优化,以支持集成的语音和数据业务

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摘要

In this paper, we optimize the usage of both control and traffic channels of a CDMA system by switching the MAC states of a service. In particular, we find the optimal transition timers for a cdma2000 system supporting integrated voice and data traffic. This is achieved by optimizing a composite performance metric defined as a multi-objective function of channel utilization, waiting time and the saving in the signalling overhead. First, we try to characterize wireless data as a mix of of Poisson-distributed voice packets and Pareto-distributed data packets, and study the effect of the composition of the mix and the shape parameter of Pareto distribution on the system performance. Then we derive analytical expressions for the composite performance metric with a goal to obtain the optimal values of expiration timers at which the MAC states should be switched such that the system performance is maximized. Since a closed form solution could not be obtained due to the transcendental nature of the analytical expression, simulation experiments are conducted to confirm the analysis.
机译:在本文中,我们通过切换服务的MAC状态来优化CDMA系统的控制和业务信道的使用。特别是,我们找到了支持集成语音和数据流量的cdma2000系统的最佳过渡计时器。这是通过优化定义为信道利用率,等待时间和节省信令开销的多目标函数的复合性能指标来实现的。首先,我们尝试将无线数据表征为泊松分布的语音数据包和帕累托分布的数据包的混合,并研究混合的组成和帕累托分布的形状参数对系统性能的影响。然后,我们得出复合性能度量的解析表达式,其目的是获得到期计时器的最佳值,在该计时器上应切换MAC状态,以使系统性能最大化。由于解析表达式的先验性质,无法获得封闭形式的解,因此进行了仿真实验以确认分析结果。

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