Uplink Scheduling for Supporting Real Time Voice Traffc in IEEE 802.16 Backhaul Networks

作     者：戴立中 赵冬梅 

作者机构：Gemini Mobile Technologies Department of Electrical and Computer Engineering McMaster University Hamilton OntarioCanada 

出 版 物：《Journal of Computer Science & Technology》 (计算机科学技术学报（英文版）)

年 卷 期：2008年第23卷第5期

页      面：806-814页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统] 

基　　金：supported by Natural Sciences and Engineering Research Council of Canada under Grant No. 5-43990 

主　　题：scheduling real-time traffic packet voice IEEE 802.16 

摘      要：In this paper we propose simple enhancements to the bandwidth （BW） request messages in IEEE 802.16 for supporting real-time packet voice traffic. Three different BW request formats are proposed, each requiring a different amount of latency information about the buffered packets at the SS. On this basis, packet scheduling schemes are proposed for the BS to make resource allocations for real-time traffic. Our results show that the proposed BW request and scheduling schemes achieve significantly lower packet loss probability than the standard IEEE 802.16 BW request with round robin scheduling. The results further show that there is an optimum point about how much delay information the SS should report to the BS in order to best utilize the uplink resources while the SS provides satisfactory real-time performance for the voice traffic.