Title :
MAC enhancements for downlink multi-user MIMO transmission in next generation WLAN
Author :
Zhu, Chunhui ; Bhatt, Anirudh ; Kim, Youngsoo ; Aboul-magd, Osama ; Ngo, Chiu
Author_Institution :
Samsung Electron., San Jose, CA, USA
Abstract :
For the first time in the WLAN technology, multi-user downlink transmission will be made possible by the upcoming IEEE standard, 802.11ac. In this paper, we will report its current status, focusing on the MAC modifications and enhancements that are necessary to support the unique feature of downlink multi-user MIMO transmission. In particular, the technique of enhancing Transmit Opportunity (TXOP) for downlink MU-MIMO transmission and the revised backoff procedures for secondary ACs will be introduced and discussed. The performance of the proposed mechanisms is evaluated using simulations. The proposed TXOP Sharing mechanism has been accepted in the 802.11ac draft specification and is currently under letter ballot in the IEEE 802.11 WG.
Keywords :
MIMO communication; access protocols; next generation networks; wireless LAN; IEEE standard 802.11; MAC enhancements; TXOP sharing mechanism; WLAN technology; downlink MU-MIMO transmission; downlink multiuser MIMO transmission; multiuser downlink transmission; next generation WLAN; technique of enhancing transmit opportunity; Downlink; IEEE 802.11 Standards; MIMO; Receivers; Simulation; Throughput; Wireless LAN; IEEE 802.11ac; MIMO; Wireless LAN; backoff procedure; fairness; multi-user; transmit opportunity;
Conference_Titel :
Consumer Communications and Networking Conference (CCNC), 2012 IEEE
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4577-2070-3
DOI :
10.1109/CCNC.2012.6181174
