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Scheduling algorithms for high-throughput packet data service in cellular radio systems

机译:蜂窝无线系统中高吞吐量分组数据服务的调度算法

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摘要

This paper examines the performance of a number of scheduling algorithms for the wireless packet data access evolution of third-generation cellular systems. The algorithms are analyzed using three different wireless channel models (two pedestrian, one vehicular). For each channel model, a comparison of the performance of the algorithms using outdated channel state information plus margins tuned to provide an average 1 % packet error rate, as well as using perfect channel prediction in order to determine the supportable bit rate and transmission format for each user, has been carried out. The performance of the algorithms is evaluated in terms of the average throughput per sector as a function of the number of users. The average delay per packet and per user versus the number of users per sector and the distributions of allocated slots per user are also determined as a measure of the fairness of each algorithm. It is also shown that the use of outdated information and margins can be an effective substitute for prediction, provided that the outdated measurements are reasonably accurate.
机译:本文研究了第三代蜂窝系统无线分组数据访问演进的许多调度算法的性能。使用三种不同的无线信道模型(两个行人,一个车辆)对算法进行了分析。对于每个信道模型,使用过时的信道状态信息加上已调整以提供平均1%数据包错误率的余量,以及使用完善的信道预测以确定可支持的比特率和传输格式的算法性能比较每个用户,都已经执行了。根据每个扇区的平均吞吐量作为用户数量的函数来评估算法的性能。还确定每个分组和每个用户的平均延迟与每个扇区的用户数以及每个用户分配的时隙的分布,作为每个算法公平性的度量。还表明,只要过时的测量值相当准确,使用过时的信息和边距就可以有效地替代预测。

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