Enhancement of IEEE 802.11ah MAC for M2M Communications

Author

Chul Wan Park ; Duckdong Hwang ; Tae-Jin Lee

Author_Institution

Samsung Electro-Mech., Suwon, South Korea

Volume

18

Issue

7

fYear

2014

fDate

Jul-14

Firstpage

1151

Lastpage

1154

Abstract

Machine-to-machine (M2M) communications is expected to be supported in the next-generation wireless LAN, IEEE 802.11ah. One of the most important issues for M2M communications is designing an effective medium access scheme to handle many devices. In this letter, we propose a new medium access control (MAC) enhancement to increase the uplink access efficiency. The proposed algorithm estimates the number of devices for the uplink access from the success probability. In the proposed algorithm, an access point (AP) determines the optimal size of the restricted access window (RAW) considering the relationship between the estimated number of devices and the size of RAW. We show that the success probability for the uplink access is improved by using our proposed algorithm through analysis and simulations.

Keywords

access protocols; multi-access systems; next generation networks; probability; wireless LAN; AP; IEEE 802.11ah MAC; M2M communications; MAC enhancement; RAW; WLAN; access point; machine-to-machine communications; medium access control; medium access scheme; next-generation wireless LAN; restricted access window; success probability; uplink access efficiency; Algorithm design and analysis; Downlink; Educational institutions; Estimation; IEEE 802.11 Standards; Probability; Uplink; IEEE 802.11ah; M2M; RAW; WLAN; uplink random access;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2014.2323311

Filename

6814801