A subchannel-aware burst fragmentation, packing and scheduling (BFPS) algorithm for downlink traffic in IEEE 802.16 OFDMA systems

Author

Chen, Hung-Chang ; Shih, Kuei-Ping ; Chiang, Chi-Tao ; Chen, Cing-Lin

Author_Institution

Dept. of Inf. Technol., Ching Kuo Inst. of Manage. & Health, Keelung, Taiwan

fYear

2011

fDate

4-8 July 2011

Firstpage

1141

Lastpage

1146

Abstract

The paper investigates the downlink burst scheduling problem (BSP) in IEEE 802.16 OFDMA systems. To solve the problem, a subchannel-aware burst fragmentation, packing and scheduling (BFPS) algorithm is proposed to schedule the position of each burst with high subchannel utilization and low DL-MAP overhead. BFPS is composed of the burst allocation scheme, burst fragmentation and packing scheme, and the burst swapping scheme. The burst allocation scheme and the burst fragmentation and packing scheme are to reduce the wasted and unused slots in and among bursts, and the DL-MAP control overhead. Moreover, in order for the channel compensation, the burst swapping scheme is used to adjust the positions of bursts. The simulation results highlight that BFPS outperforms other related approaches in the network throughput, DL-MAP IE efficiency, service ratio, and the bandwidth utilization ratio.

Keywords

OFDM modulation; frequency division multiple access; telecommunication traffic; IEEE 802.16 OFDMA system; bandwidth utilization ratio; burst allocation scheme; burst fragmentation; burst packing scheme; burst scheduling problem; burst swapping scheme; channel compensation; downlink traffic; subchannel utilization; Bandwidth; Downlink; IEEE 802.16 Standards; Modulation; Resource management; Scheduling; Throughput; Burst Allocations; IEEE 802.16; OFDMA; WiMAX;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Mobile Computing Conference (IWCMC), 2011 7th International

Conference_Location

Istanbul

Print_ISBN

978-1-4244-9539-9

Type

conf

DOI

10.1109/IWCMC.2011.5982701

Filename

5982701