Maximizing downlink bandwidth allocation method based on SVC in Mobile WiMAX networks for generic broadband services

Authors:
I.-S. Hwang;Bor-Jiunn Hwang;Ruey-Rong Su
Affiliations:
Department of Computer Science and Engineering, Yuan Ze University, Chung Li, Taiwan;Department of Computer and Communication Engineering, Ming Chuan University, TaoYuan, Taiwan;Department of Computer Science and Engineering, Yuan Ze University, Chung Li, Taiwan and Department of Information Management, Kang-Ning Junior College of Medical Care and Management, Taipei, Taiw ...
Venue:
ISRN Communications and Networking
Year:
2011

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Abstract

This paper proposes an adaptive downlink bandwidth allocation method (DBAM) for six traffic types--UGS, RT-VR, ERT-VR, NRT-VR, BE, and multicast--to maximize the throughput of broadband WiMAX networks for generic broadband services. Based on traffic throughput and the amount of traffic in different scalable video coding (SVC) layers, two adaptive resource adjustment schemes with SVC technology in the DBAM are proposed and compared. Moreover, a hierarchical priority queuing for different traffic profiles with weighted round robin (HPWRR) scheduling algorithm is proposed to achieve higher resource utilization and to meet the required quality of service (QoS) for each traffic type. Simulation results show that the proposed DBAM with HPWRR can achieve efficient throughput and bandwidth utilization and improve the delay time for RT-VR and multicast traffic.