A Hierarchical Channel-Aware Uplink Scheduler for WiMAX Base Stations

Author

Yurdakul, Zeynep ; Oktug, Sema

Author_Institution

Dept. of Comput. Sci., Istanbul Tech. Univ., Istanbul, Turkey

fYear

2010

fDate

9-15 May 2010

Firstpage

398

Lastpage

403

Abstract

The IEEE 802.16 standard defines MAC and physical layer protocols for broadband wireless access, however it does not specify any scheduling algorithm. In this paper, we propose a RED-based Weighted Fair Priority Queuing algorithm for inter-class scheduling and a channel aware algorithm for intra-class scheduling. Weights of the service classes are adaptive according to the QoS requirements of each service class. Weights of the subscriber stations are assigned based on their channel quality and bandwidth requests. Simulation results show that overall system throughput is improved without starving lower priority service classes.

Keywords

IEEE standards; WiMax; access protocols; broadband networks; quality of service; queueing theory; radio access networks; scheduling; IEEE 802.16 standard; MAC protocol; QoS; RED-based weighted fair priority queuing algorithm; WiMAX base stations; bandwidth requests; broadband wireless access network; channel quality; hierarchical channel-aware uplink scheduler; interclass scheduling algorithm; physical layer protocols; subscriber stations; Access protocols; Bandwidth; Base stations; Media Access Protocol; Physical layer; Quality of service; Scheduling algorithm; Throughput; WiMAX; Wireless application protocol; 802.16; ns-2; scheduling; uplink; wimax;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications (AICT), 2010 Sixth Advanced International Conference on

Conference_Location

Barcelona

Print_ISBN

978-1-4244-6748-8

Type

conf

DOI

10.1109/AICT.2010.49

Filename

5489789