文章基本信息

标题：Performance Analysis of Scheduling Algorithms For VoIP Services in IEEE 02.16 Systems
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作者：M.A. Mohamed ; F.W. Zaki ; A.M. Elfeki 等
期刊名称：International Journal of Computer Science Issues
印刷版ISSN：1694-0784
电子版ISSN：1694-0814
出版年度：2012
卷号：9
期号：6
出版社：IJCSI Press
摘要：VoIP applications are being widely used in today\'s networks challenging their capabilities to provide a good quality of experience level to the users. In particular, There are several scheduling algorithms for Voice over IP (VoIP) services in IEEE 802.16 systems, such as unsolicited grant service (UGS), real-time polling service (rtPS), using Grant-Me bit of the generic MAC header. However, these algorithms have some problems of a waste of uplink resources, additional access delay, and MAC overhead for supporting VoIP services with variable data rates and silence suppression. To solve these problems, we propose a novel uplink-scheduling algorithm (Extended-rtPS) for the VoIP services in IEEE 802.16 systems through the performance analysis and simulation results of resource utilization, total throughput, and packet transmission delay, we show that our proposed algorithm can solve the problems of the conventional algorithms, and has the best performance among these algorithms.
关键词：Worldwide interoperable Microwave Access (WiMAX); Voice over Internet Protocol (VOIP); Optimized Network Engineering Tools (OPNET) and Quality of Service (QoS)