Presentation is loading. Please wait.

Presentation is loading. Please wait.

Doc.: IEEE 802.11-11/1464r0 Submission November 2011 Yasuhiko Inoue (NTT), et. al.Slide 1 The better spectrum utilization for the future WLAN standardization.

Published byAlexa Saunders Modified over 9 years ago

Similar presentations

Presentation on theme: "Doc.: IEEE 802.11-11/1464r0 Submission November 2011 Yasuhiko Inoue (NTT), et. al.Slide 1 The better spectrum utilization for the future WLAN standardization."— Presentation transcript:

1 doc.: IEEE 802.11-11/1464r0 Submission November 2011 Yasuhiko Inoue (NTT), et. al.Slide 1 The better spectrum utilization for the future WLAN standardization Date: 2011-11-08 Authors:

2 doc.: IEEE 802.11-11/1464r0 Submission Abstract There are emerging use cases of the WLAN systems. High quality video transmissions and cellular offload in a residential environment are important applications which requires more and more data rates and throughputs. For the continuous success of WLAN, we need to find out the way to extend system capacity of WLANs. November 2011 Yasuhiko Inoue (NTT), et. al.Slide 2

3 doc.: IEEE 802.11-11/1464r0 Submission Background#1: Changes in the use case of WLAN Recent important use cases of WLANs –Wireless home networking: Many appliances such as digital TVs, VCRs and game machines have a WLAN interface. Applications using direct link need more spectrum resources There may be another opportunity for WLANs such as home automation and home security. –Cellular data offload: Smartphones and slate PCs also have a WLAN interface. WLAN is expected to be an access method complementary to the cellular systems, especially in the urban areas. November 2011 Yasuhiko Inoue (NTT), et. al.Slide 3

4 doc.: IEEE 802.11-11/1464r0 Submission Background#2: Wireless LAN Evolution November 2011 Yasuhiko Inoue (NTT), et. al.Slide 4 Year 1G 10G 100M Wireless LANs 10M 1M 100k 100G Data Rate [bit/s] Cellular LTE-Advanced 2005201020152000 1995 GSM PDC WCDMA HSDPA LTE.11b 802.11.11a.11g.11n.11ad.11ac ? Future WLANs need to have more speed, more bandwidth to support high speed applications and/or to be alternative to the cellular systems.

5 doc.: IEEE 802.11-11/1464r0 Submission WLANs have traditionally increased data rate by extending channel bandwidth. –802.11n specified the optional 40MHz channel operation in addition to the conventional 20MHz channel operation –The 802.11ac is introducing 80MHz and optional 160MHz channel operations. However, it does not seem to be a reasonable to introduce even wider channels such as 240 MHz and 320 MHz due to the limitation of total spectrum. Although there are new frequency bands to be available for WLANs, it is important to enhance the spectrum utilization of existing frequency bands in order to offer the same user experiences. November 2011 Yasuhiko Inoue (NTT), et. al.Slide 5 The channelization in 5GHz bands 5470 565056705725 [MHz] 5150 5350 5250 3640444852566064 100104108112116120124128132136140 5560 20MHz channels 40MHz channels 80MHz channels 160MHz channels

6 doc.: IEEE 802.11-11/1464r0 Submission WLAN deployment An example of deployment scenario - home networks in an apartment –There will be 802.11a, 802.11n and 802.11ac BSS and devices coexisting on the same channel in the same location. –Even in a BSS, there may be some kinds of client devices E.g., There may be a hand set or a tablet PC with 802.11a interface associated to a 802.11ac AP. November 2011 Yasuhiko Inoue (NTT), et. al.Slide 6 Note: This is not a unique situation of the home networks Similar situation may be seen in other places such as hotspots.

7 doc.: IEEE 802.11-11/1464r0 Submission For the better use of space, time and frequency resources For simplicity, let us assume that an 802.11a, an 802.11n and an 802.11ac BSSs are operating on the same channel and in the same location. Those client devices have different capabilities, such as channel bandwidth and the number of supported antennas. There may be unused frequency, the secondary channels, and/or spatial resources. November 2011 Yasuhiko Inoue (NTT), et. al.Slide 7 Ch # time … 56 52 48 44 40 36.11a.11 ac.11n.11a c.11a.11n Space.11 ac.11n.11 ac.11 ac.11 ac Frequency There will be some ways to utilize those unused resources.11 ac.11 ac.11 ac 11a11n11ac 11a11n11ac APs STAs 20MHz, 1SS 40MHz, 2SS 80MHz, 4SS

8 doc.: IEEE 802.11-11/1464r0 Submission Ideas to improve frequency and spatial resources Frequency domain extension –Multi-channel operation 20MHz or 40MHz based flexible channel assignment including non- contiguous operations OFDMA like approach –Flexible channel use across BSSs Enhance frequency utilization by exchanging information between APs Spatial domain extension –Uplink MU-MIMO Extend 802.11ac DL MU-MIMO –Spatial multiplexing across BSSs Extend beamforming function of MU-MIMO to enhance system capacity across BSSs exchanging information between APs November 2011 Yasuhiko Inoue (NTT), et. al.Slide 8

9 doc.: IEEE 802.11-11/1464r0 Submission An example of frequency and spatial domain extension across BSSs November 2011 Yasuhiko Inoue (NTT), et. al.Slide 9 Ch # time … 48 44 40 36.11a.11ac.11n Space.11ac.11n.11ac.11*.11ac.11n.11*.11ac.11n.11*.11n.11ac.11a Ch # time … 48 44 40 36.11a.11ac.11n.11* AP collaboration Frequency domain extension Frequency + Spatial domain extension

10 doc.: IEEE 802.11-11/1464r0 Submission Conclusions For the continuous prosperity of WLANs, we need to extend system capacity. To enhance the system capacity, we need to utilize space and frequency resources more efficiently. We would like to start discussion to find out the image of next generation WLANs and technologies for consideration. November 2011 Yasuhiko Inoue (NTT), et. al.Slide 10

Download ppt "Doc.: IEEE 802.11-11/1464r0 Submission November 2011 Yasuhiko Inoue (NTT), et. al.Slide 1 The better spectrum utilization for the future WLAN standardization."

Similar presentations

Discussion on OFDMA in HEW

Discussion on OFDMA in HEW
Doc.: IEEE 802.11-13/0871r0 Submission Jul 2013 Timo Koskela, Renesas Mobile CorporationSlide 1 Discussion on Potential Techniques for HEW Date: 2013-07-15.

Doc.: IEEE /0871r0 Submission Jul 2013 Timo Koskela, Renesas Mobile CorporationSlide 1 Discussion on Potential Techniques for HEW Date:
Doc.: IEEE 802.11-11/1316r1 Submission Considerations for Cellular-Offloading Use Case Date: 2011-09-21 September 2011 Joseph Teo Chee Ming et al, I2R.

Doc.: IEEE /1316r1 Submission Considerations for Cellular-Offloading Use Case Date: September 2011 Joseph Teo Chee Ming et al, I2R.
Submission doc.: IEEE 802.11-14/1225r1 Considerations on CCA for OBSS Opearation in 802.11ax Date: 2014-09-11 Slide 1Huawei Authors:

Submission doc.: IEEE /1225r1 Considerations on CCA for OBSS Opearation in ax Date: Slide 1Huawei Authors:
Submission doc.: IEEE 802.11-14/1437r1 November 2014 Jinsoo Ahn, Yonsei UniversitySlide 1 Efficient Wider Bandwidth Operation in IEEE 802.11ax Date: 2014-11-04.

Submission doc.: IEEE /1437r1 November 2014 Jinsoo Ahn, Yonsei UniversitySlide 1 Efficient Wider Bandwidth Operation in IEEE ax Date:
Doc.: IEEE 802.11-15/568r0 Submission Frequency Selective Scheduling (FSS) for TGax OFDMA May 2015 Slide 1 Date: 2015-05-11 Authors: Kome Oteri (InterDigital)

Doc.: IEEE /568r0 Submission Frequency Selective Scheduling (FSS) for TGax OFDMA May 2015 Slide 1 Date: Authors: Kome Oteri (InterDigital)
Submission doc.: IEEE 802.11-15/0353r1 March 2015 Jinsoo Ahn, Yonsei UniversitySlide 1 OFDMA Non-contiguous Channel Utilization Date: 2015-03-10 Authors:

Submission doc.: IEEE /0353r1 March 2015 Jinsoo Ahn, Yonsei UniversitySlide 1 OFDMA Non-contiguous Channel Utilization Date: Authors:
Submission doc.: IEEE 802.11-14/1452r0 November 2014 Leif Wilhelmsson, EricssonSlide 1 Frequency selective scheduling in OFDMA Date: 2014-11-03 Authors:

Submission doc.: IEEE /1452r0 November 2014 Leif Wilhelmsson, EricssonSlide 1 Frequency selective scheduling in OFDMA Date: Authors:
Submission doc.: IEEE 802.11-14/1208r1 September 2014 Jinsoo Ahn, Yonsei UniversitySlide 1 MAC considerations on 802.11ax OFDMA Date: 2014-09-17 Authors:

Submission doc.: IEEE /1208r1 September 2014 Jinsoo Ahn, Yonsei UniversitySlide 1 MAC considerations on ax OFDMA Date: Authors:
Submission doc.: IEEE 11-13/0287r3 March 2013 Yasuhiko Inoue, NTTSlide 1 Beyond 802.11ac – A Very High Capacity WLAN Date: 2013-03-19 Authors:

Submission doc.: IEEE 11-13/0287r3 March 2013 Yasuhiko Inoue, NTTSlide 1 Beyond ac – A Very High Capacity WLAN Date: Authors:
Doc.: IEEE 802.11-12/1126r0 Submission September 2012 Krishna Sayana, SamsungSlide 1 Wi-Fi for Hotspot Deployments and Cellular Offload Date: 2012-09-18.

Doc.: IEEE /1126r0 Submission September 2012 Krishna Sayana, SamsungSlide 1 Wi-Fi for Hotspot Deployments and Cellular Offload Date:
Submission doc.: IEEE 802.11-12/1063r0 September 2012 Yasuhiko Inoue (NTT)Slide 1 Requirements on WLAN Cellular Offload Date: 2012-09-18 Authors:

Submission doc.: IEEE /1063r0 September 2012 Yasuhiko Inoue (NTT)Slide 1 Requirements on WLAN Cellular Offload Date: Authors:
Submission doc.: IEEE 11-12/0844r0 Slide 1 Non-linear Multiuser MIMO for next generation WLAN Date: 2012-07-13 Authors: Shoichi Kitazawa, ATR.

Submission doc.: IEEE 11-12/0844r0 Slide 1 Non-linear Multiuser MIMO for next generation WLAN Date: Authors: Shoichi Kitazawa, ATR.
Submission doc.: IEEE 802.11-15/870r2 July 2015 Guido R. Hiertz et al., EricssonSlide 1 802.11ax in 2.4 GHz Date: 2015-07-14 Authors:

Submission doc.: IEEE /870r2 July 2015 Guido R. Hiertz et al., EricssonSlide ax in 2.4 GHz Date: Authors:
Doc.: IEEE 802.11-11/0323r0 SubmissionRon Porat, BroadcomSlide 1 Views on 802.11ah Use Cases Date: 2011-03-14 Authors: March 2011.

Doc.: IEEE /0323r0 SubmissionRon Porat, BroadcomSlide 1 Views on ah Use Cases Date: Authors: March 2011.
Submission doc.: IEEE 802.11-12/1258r2 November 2012 Fang Xie (China Mobile)Slide 1 Operator Deployed WLAN for Cellular offload Date: 2012-11-13.

Submission doc.: IEEE /1258r2 November 2012 Fang Xie (China Mobile)Slide 1 Operator Deployed WLAN for Cellular offload Date:
802.11ac What it is ∙ What it can do for you Real World deployment scenarios and examples Scott McNeil ∙ Assistant Network Administrator ∙ Cape Fear Community.

802.11ac What it is ∙ What it can do for you Real World deployment scenarios and examples Scott McNeil ∙ Assistant Network Administrator ∙ Cape Fear Community.
September 2013 doc.: IEEE 11-13/1105r0 Submission Meng Yang (CATR) Discussion on Access Mechanism for HEW Date: 2013-09-18 Authors: NameAffiliationsAddressPhoneEmail.

September 2013 doc.: IEEE 11-13/1105r0 Submission Meng Yang (CATR) Discussion on Access Mechanism for HEW Date: Authors: NameAffiliationsAddressPhone .
Doc.: IEEE 802.11-04/0033r0 Submission January 2004 Y. Inoue, et. al., NTTSlide 1 Japanese Frequency Regulations Related to TGn Functional Requirements.

Doc.: IEEE /0033r0 Submission January 2004 Y. Inoue, et. al., NTTSlide 1 Japanese Frequency Regulations Related to TGn Functional Requirements.
Submission doc.: IEEE 802.11-14/1179r0 September 2014 Gwangzeen Ko, ETRISlide 1 Considerations for Partial Band Interference between WLAN Systems Date:

Submission doc.: IEEE /1179r0 September 2014 Gwangzeen Ko, ETRISlide 1 Considerations for Partial Band Interference between WLAN Systems Date:

Similar presentations

Ads by Google