An Adaptive Bandwidth Request Mechanism for Real-Time Traffic in WiMAX

doi:10.13190/jbupt.200706.56.018

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2007, Vol. 30 ›› Issue (6): 56-59.doi: 10.13190/jbupt.200706.56.018

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An Adaptive Bandwidth Request Mechanism for Real-Time Traffic in WiMAX

XU Ya-jing, LI Zhi-tao, ZHONG Xiu-fang, XU Hui-min

(School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China)

Received:2007-03-05 Revised:2007-03-30 Online:2007-12-31 Published:2007-12-31
Contact: Ya-Jing XU

Abstract

Abstract:

Based on traffic prediction, a new adaptive bandwidth request mechanism for real-time traffic in worldwide interoperability for microwave access （WiMAX） is proposed. According to historical traffic of system, this algorithm combines exponential estimation with cumulative mean errors; therefore it can estimate the arrival of packets next time and request extra bandwidth for them in advance. Hence it can decrease time lags and reduce buffer for real-time traffic. Simulation results show that the proposed adaptive algorithm can provide better performance of average delay and buffer

Key words: adaptive algorithm, worldwide interoperability for microwave access, quality of service, real-time

CLC Number:

TN925

XU Ya-jing, LI Zhi-tao, ZHONG Xiu-fang, XU Hui-min

. An Adaptive Bandwidth Request Mechanism for Real-Time Traffic in WiMAX[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2007, 30(6): 56-59.

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An Adaptive Bandwidth Request Mechanism for Real-Time Traffic in WiMAX

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