Efficient Multi-User Transmission Technique with Frequency Division for WLANs

Author

Shinohara, Shoko ; Hirantha Sithira Abeysekera, B.A. ; Inoue, Yasuyuki ; Asai, Yusuke ; Mizoguchi, Masato

Author_Institution

NTT Network Innovation Labs., NTT Corp., Yokosuka, Japan

fYear

2014

fDate

18-21 May 2014

Firstpage

1

Lastpage

5

Abstract

The upcoming wireless LAN standard IEEE 802.11ac extends the channel bandwidth from conventional 20 or 40 MHz to 80 or 160 MHz to increase the data rate. Consequently, there could be stations supporting different channel bandwidths in one area. Stations belonging to the same basic service set (BSS) have to operate on the primary channel, which is a common 20 MHz sub-channel. In such a situation, the secondary channels associated with the primary channel may remain unused and, as a result, the system capacity will be degraded. To address this problem, we propose a multi-user multi-channel transmission technique to improve the efficiency of downlink transmissions. The computer simulation results confirm the effectiveness of the proposed method.

Keywords

bandwidth allocation; channel capacity; multiuser channels; wireless LAN; BSS; IEEE 802.11ac; bandwidth 160 MHz; bandwidth 20 MHz; bandwidth 40 MHz; bandwidth 80 MHz; basic service set; channel bandwidths; downlink transmissions efficiency; frequency division; multiuser multichannel transmission technique; primary channel; secondary channels; system capacity; wireless LAN standard; Bandwidth; Barium; Downlink; OFDM; Standards; Throughput; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2014 IEEE 79th

Conference_Location

Seoul

Type

conf

DOI

10.1109/VTCSpring.2014.7022901

Filename

7022901