Presentation is loading. Please wait.

Presentation is loading. Please wait.

Doc.: IEEE 802.11-11/0410r2 Submission March 2011 Slide 1 Data Transmission Protection on the IEEE 802.11ac MU-MIMO Downlink Date: 2011-03-16 Authors:

Published byElizabeth Buchanan Modified over 10 years ago

Similar presentations

Presentation on theme: "Doc.: IEEE 802.11-11/0410r2 Submission March 2011 Slide 1 Data Transmission Protection on the IEEE 802.11ac MU-MIMO Downlink Date: 2011-03-16 Authors:"— Presentation transcript:

1 doc.: IEEE 802.11-11/0410r2 Submission March 2011 Slide 1 Data Transmission Protection on the IEEE 802.11ac MU-MIMO Downlink Date: 2011-03-16 Authors: Haiguang Wang, Institute for Infocomm Research

2 doc.: IEEE 802.11-11/0410r2 Submission March 2011 Slide 2 Abstract The presentation addresses CID 1337 for the hidden node issues in MU-MIMO, where a few STAs receiving MU- PPDU grouped according to a group ID We propose to Allow group ID being transmitted in RTS (no change to frame structure) This enables efficient RTS-CTS protection for MU- MIMO –AP transmits Single RTS with group ID embedded –Each BSS returns a CTS Haiguang Wang, Institute for Infocomm Research

3 doc.: IEEE 802.11-11/0410r2 Submission March 2011 Haiguang Wang, Institute for Infocomm ResearchSlide 3 Recap, IEEE 802.11ac MU-MIMO IEEE 802.11ac focus on high speed data transmission –Transmission speed up to 1 Gbps –Radio bandwidth up to 160 MHz –Use MU-MIMO technology With MU-MIMO technology, AP can transmit multiple data packets to multiple stations at the same time.

4 doc.: IEEE 802.11-11/0410r2 Submission March 2011 Slide 4 Hidden Node Issues with MU-MIMO Haiguang Wang, Institute for Infocomm Research One of the problems with MU-MIMO technology is how to protect data transmission. –IEEE 802.11 use contention-based data transmission. –Legacy RTS/CTS can only provide partial protection over the MU-MIMO downlink transmission. –Collision may happen when legacy stations is hidden to 802.11ac stations. AP1 STA2 STA3 STA1 AP2 STA4 RTS CTS Collision MU-MIMO Downlink RTS protection range CTS protection range

5 doc.: IEEE 802.11-11/0410r2 Submission March 2011 Slide 5 Possible Transmission Protection for 802.11ac MU-MIMO Downlink Haiguang Wang, Institute for Infocomm Research A few schemes can be used for transmission protection of 802.11ac MU- MIMO downlink, they are: –Legacy RTS/CTS –Single RTS Multiple CTS –Multiple RTS Multiple CTS

6 doc.: IEEE 802.11-11/0410r2 Submission March 2011 Slide 6 Single RTS Multiple CTS (1) Haiguang Wang, Institute for Infocomm Research

7 doc.: IEEE 802.11-11/0410r2 Submission March 2011 Slide 7 Single RTS Multiple CTS (2) Haiguang Wang, Institute for Infocomm Research RTS xIFS time AP STA1 STA2 STA3 CTS xIFS time NAV protection CTS xIFS time We can also consider to send CTS at the same time. NAV distributing

8 doc.: IEEE 802.11-11/0410r2 Submission March 2011 Slide 8 Addressing Multiple Stations in RTS Haiguang Wang, Institute for Infocomm Research Single RTS multiple CTS can provide a better protection on data transmission than legacy RTS/CTS scheme. However, we need solve following issues: –Address multiple stations in RTS. –Compatible with legacy stations

9 doc.: IEEE 802.11-11/0410r2 Submission March 2011 Slide 9 Group Address Haiguang Wang, Institute for Infocomm Research IEEE 802.11ac task group has defined a group ID at PHY layer. A group of stations may be assigned to the same group ID, which indicates that data transmitted in the packet are sent to the stations in this group. Group ID is sent in PHY layer

10 doc.: IEEE 802.11-11/0410r2 Submission March 2011 Slide 10 Using RTS-to-Self and Group ID for Addressing Haiguang Wang, Institute for Infocomm Research AP uses group ID directly as group MAC address. –To avoid confusion caused by station with MAC address that is equivalent to a group ID, we propose to use RTS-To-Self with group ID in TA field. AP1 STA2 STA3 STA1 AP2 STA4 RTS

11 doc.: IEEE 802.11-11/0410r2 Submission March 2011 Slide 11 Advantage Haiguang Wang, Institute for Infocomm Research No change to RTS frame structure Simple in the implementation. Save the signaling exchange for group addressing. Compatible with legacy system

12 doc.: IEEE 802.11-11/0410r2 Submission March 2011 Slide 12 Summary Haiguang Wang, Institute for Infocomm Research In this proposal, we have proposed to utilize group ID addressing multiple stations with a single RTS packet. It is compatible to legacy stations. It enables efficient RTS-CTS transmission for hidden node protection in MU-MIMO

13 doc.: IEEE 802.11-11/0410r2 Submission March 2011 Haiguang Wang, Institute for Infocomm ResearchSlide 13 Strawpoll Are you in favor of allowing using group ID in RTS? Y N A

Download ppt "Doc.: IEEE 802.11-11/0410r2 Submission March 2011 Slide 1 Data Transmission Protection on the IEEE 802.11ac MU-MIMO Downlink Date: 2011-03-16 Authors:"

Similar presentations

Doc.: IEEE 802.11-01/272a Submission June 2001 S. Choi, Philips Research Slide 1 Problems with IEEE 802.11(e) NAV Operation and ONAV Proposal Javier del.

Doc.: IEEE /272a Submission June 2001 S. Choi, Philips Research Slide 1 Problems with IEEE (e) NAV Operation and ONAV Proposal Javier del.
Haiguang Wang, Jaya Shankar, Zhongding Lei

Haiguang Wang, Jaya Shankar, Zhongding Lei
Submission doc.: IEEE 802.11-12/0325r0 March 2012 Slide 1 TIM Enhancement With Group Bits Date: 2012-03-12 Authors: Zhong-Yi Jin, Nokia.

Submission doc.: IEEE /0325r0 March 2012 Slide 1 TIM Enhancement With Group Bits Date: Authors: Zhong-Yi Jin, Nokia.
Protocol for SU and MU Sounding Feedback

Protocol for SU and MU Sounding Feedback
Submission doc.: IEEE 11-14/0xxx March 2014 Giwon Park, LG ElectronicsSlide 1 Discussion on power save mode for real time traffic Date: 2014-03-16 Authors:

Submission doc.: IEEE 11-14/0xxx March 2014 Giwon Park, LG ElectronicsSlide 1 Discussion on power save mode for real time traffic Date: Authors:
Doc.: IEEE 802.11-10/0259r02 Submission Date: 2010-03-15 802.11ad New Technique Proposal March 2010 Yuichi Morioka, Sony CorporationSlide 1 Authors:

Doc.: IEEE /0259r02 Submission Date: ad New Technique Proposal March 2010 Yuichi Morioka, Sony CorporationSlide 1 Authors:
Doc.: IEEE 802.11-10/0627r00 Submission Yuichi Morioka, Sony Corporation Date: 2010-05-17 Why we need Length Field in VHT SIG May 2010 Slide 1 Authors:

Doc.: IEEE /0627r00 Submission Yuichi Morioka, Sony Corporation Date: Why we need Length Field in VHT SIG May 2010 Slide 1 Authors:
Doc.: IEEE 802.11-12/1355r2 11ah Submission Date: 2012-11-08 Authors: Nov 2012 James Wang, MediaTek Slide 1.

Doc.: IEEE /1355r2 11ah Submission Date: Authors: Nov 2012 James Wang, MediaTek Slide 1.
GroupID Concept for Downlink MU-MIMO Transmission

GroupID Concept for Downlink MU-MIMO Transmission
Doc.: IEEE 802.11-12/0696r2 SubmissionLiwen Chu Etc.Slide 1 Slot-based Power Save without PS-Poll Date: 2012-07-12 Authors: Date: July, 2012.

Doc.: IEEE /0696r2 SubmissionLiwen Chu Etc.Slide 1 Slot-based Power Save without PS-Poll Date: Authors: Date: July, 2012.
Doc.: IEEE 802.11-08/0578r0 Submission 2008 May Jarkko Kneckt, NokiaSlide 1 Forwarding in mesh containing MPs in power save Date: 2008-05-12 Authors:

Doc.: IEEE /0578r0 Submission 2008 May Jarkko Kneckt, NokiaSlide 1 Forwarding in mesh containing MPs in power save Date: Authors:
Doc.: IEEE 802.11-13/0074r0 Submission NDP Type PS-Poll Frame Follow-Up Date: 2013-01-14 Authors: Slide 1Young Hoon Kwon, Huawei.

Doc.: IEEE /0074r0 Submission NDP Type PS-Poll Frame Follow-Up Date: Authors: Slide 1Young Hoon Kwon, Huawei.
Doc.: IEEE 802.11-14/0339-00-0hew Submission March 2014 Raja Banerjea, CSRSlide 1 A Simplified Simultaneous Transmit and Receive Mechanism Date: 2014-03-17.

Doc.: IEEE / hew Submission March 2014 Raja Banerjea, CSRSlide 1 A Simplified Simultaneous Transmit and Receive Mechanism Date:
Doc.: IEEE 802.11-11/0645r5 SubmissionLiwen Chu Etc.Slide 1 Beamforming in IBSS, Mesh BSS, AP as Beamformee Date: 2011-05-11 Authors: Date: May 2011.

Doc.: IEEE /0645r5 SubmissionLiwen Chu Etc.Slide 1 Beamforming in IBSS, Mesh BSS, AP as Beamformee Date: Authors: Date: May 2011.
Doc.: IEEE 802.11-11/0313r1 Submission March 2011 Jarkko Kneckt, NokiaSlide 1 SU-MIMO Type for Group Addressed Frames Date: 2011-03-14 Authors:

Doc.: IEEE /0313r1 Submission March 2011 Jarkko Kneckt, NokiaSlide 1 SU-MIMO Type for Group Addressed Frames Date: Authors:
Doc.: IEEE 802.11-10/0839r0 Submission Slide 1S. Abraham, Qualcomm Inc. July 2010 DL MU-MIMO performance with QoS traffic and OBSS.

Doc.: IEEE /0839r0 Submission Slide 1S. Abraham, Qualcomm Inc. July 2010 DL MU-MIMO performance with QoS traffic and OBSS.
Doc.: IEEE 802.11-10-0289-00-00af Submission Mar. 2010 Chin-Sean Sum, NICTSlide 1 Summary of NICT’s Technical Proposals for TGaf Date: 2010-03-09 Authors:

Doc.: IEEE af Submission Mar Chin-Sean Sum, NICTSlide 1 Summary of NICT’s Technical Proposals for TGaf Date: Authors:
Doc.: IEEE 802.11-08/0798r1 Submission July 2008 L. Chu Etc.Slide 1 HT Features in Mesh Network Date: 2008-07-14 Authors:

Doc.: IEEE /0798r1 Submission July 2008 L. Chu Etc.Slide 1 HT Features in Mesh Network Date: Authors:
Doc.: IEEE 802.11-08/0798r3 Submission September 2008 L. Chu Etc.Slide 1 HT Features in Mesh Network Date: 2008-09-11 Authors:

Doc.: IEEE /0798r3 Submission September 2008 L. Chu Etc.Slide 1 HT Features in Mesh Network Date: Authors:
Doc.:IEEE 802.11-12/0439r0 March 2012 Switching between DCF and PP-MAC Date: 2012-3-14 Slide 1 Authors:

Doc.:IEEE /0439r0 March 2012 Switching between DCF and PP-MAC Date: Slide 1 Authors:

Similar presentations

Ads by Google