An efficient scheduling scheme based on fuzzy prediction for IEEE 802.11e WLAN

Author

Heo, Jongman ; Kim, Namhoon ; Kwon, Wook Hyun

Author_Institution

Seoul Nat. Univ., Seoul

fYear

2007

fDate

17-20 Oct. 2007

Firstpage

481

Lastpage

485

Abstract

IEEE 802.11e standard is introduced to enhance quality of service (QoS). A hybrid coordinator function (HCF) controlled channel access (HCCA) scheduler of the standard IEEE 802.11e is only efficient for flows with constant bit rate (CBR) characteristics. In this paper, we propose a new HCCA scheduling scheme which aims to be efficient for variable bit rate (VBR) flows as well as CBR flows. The proposed scheme uses fuzzy queue length predictions to adjust its time allocation to each station. We present a set of simulations and provide performance comparisons with the reference HCCA scheduler.

Keywords

fuzzy set theory; quality of service; scheduling; wireless LAN; IEEE 802.11e WLAN; QoS; constant bit rate; controlled channel access; fuzzy prediction; fuzzy queue length predictions; hybrid coordinator function; quality of service; scheduling scheme; variable bit rate; Automatic control; Bandwidth; Bit rate; Communication system traffic control; Delay; Processor scheduling; Quality of service; Scheduling algorithm; Traffic control; Wireless LAN; Fuzzy Prediction; IEEE 802.11e; Quality of Service (QoS); Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Control, Automation and Systems, 2007. ICCAS '07. International Conference on

Conference_Location

Seoul

Print_ISBN

978-89-950038-6-2

Electronic_ISBN

978-89-950038-6-2

Type

conf

DOI

10.1109/ICCAS.2007.4406956

Filename

4406956