Improved uplink scheduling scheme for WiMAX

doi:10.3778/j.issn.1002-8331.2009.08.030

Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (8): 101-103.DOI: 10.3778/j.issn.1002-8331.2009.08.030

• 网络、通信、安全 • Previous Articles Next Articles

Improved uplink scheduling scheme for WiMAX

ZHANG Jian,YI Hui-yue,HU Hong-lin

Shanghai Institute of Microsystem and Information Technology，Chinese Academy of Sciences，Shanghai Research Center for Wireless Communications，Shanghai 200050，China

Received:2008-01-18 Revised:2008-04-02 Online:2009-03-11 Published:2009-03-11
Contact: ZHANG Jian

改进的WiMAX上行链路调度机制

张健,易辉跃,胡宏林

中国科学院上海微系统与信息技术研究所上海无线通信研究中心，上海 200050

通讯作者: 张健

Abstract

Abstract: Based on the real-time traffic scheduling scheme in IEEE 802.16e and the characteristic of VoIP，an improved uplink scheduling scheme is proposed，which adaptively adjusts the uplink bandwidth allocation period.Theoretical analysis illustrates the system capacity of VoIP user for the proposed scheduling scheme along with the existing scheduling schemes.System level simulations are presented to show that this scheme can effectively reduce the users’ uplink delay and improve the quality of service under the premise of ensuring system capacity.

Key words: VoIP, uplink scheduling, system level simulation, Quality of Service（QoS）

摘要： 基于IEEE 802.16e协议的实时业务调度机制，以及对VoIP业务特性的分析，提出了一种改进的上行链路调度机制，该调度机制自适应地调整数据带宽分配周期。从理论上分析了所提出的调度机制和已有调度机制的VoIP用户容量。系统仿真结果表明，在保证系统容量的前提下，所提出的调度机制可以有效地降低用户的上行时延，从而提高了服务质量。

关键词: VoIP, 上行链路调度, 系统级仿真, 服务质量

ZHANG Jian,YI Hui-yue,HU Hong-lin. Improved uplink scheduling scheme for WiMAX[J]. Computer Engineering and Applications, 2009, 45(8): 101-103.

张健,易辉跃,胡宏林. 改进的WiMAX上行链路调度机制[J]. 计算机工程与应用, 2009, 45(8): 101-103.

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Improved uplink scheduling scheme for WiMAX

改进的WiMAX上行链路调度机制

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