1. doc.: IEEE 802.11-12/0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission Proposed US Channelization for IEEE 802.11ah Slide 1 Authors: Date: January 17, 2012 NameCompanyAddressPhoneemail Shusaku ShimadaYokogawa Co. 2-9-32 Nakacho Musashino-shi, 180-8750, Japan +81 42 252 5558shusaku@ieee.org Stefan Aust NEC Communication Systems, Ltd. 1753 Shimonumabe, Nakahara- ku, Kawasaki, Kanagawa 211- 8666, Japan +81 44 435 1177 aust.st@ncos.nec.co.jp Mitsuru IwaokaYokogawa Electric Co. 2-9-32 Nakacho Musashino-shi, 180-8750, Japan +81 42 252 5519 Mitsuru.Iwaoka@jp.yokogawa.com Huai-Rong ShaoSamsung Electronics 3000 Orchard Parkway, San Jose, CA 95134 +1 408 544 2754hr.shao@samsung.com Lei Zhongding Institute for Infocomm Research 1 Fusionopolis Way,#21-01 Connexis Singapore 138632 +65 6408 2436 leizd@I2R.A-STAR.EDU.SG

2. doc.: IEEE 802.11-12/0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission Slide 2 Background This submission proposes a comprehensive compromise for US channelization to accommodate 1MHz channels. Numerous proposals have been contributed that suggest different channelization for US 902~928MHz. The TGah group was somewhat positive about MediaTek’s contribution (DCN1571r1), which utilizes the 1MHz channels from 902 MHz to 912MHz.

3. doc.: IEEE 802.11-12/0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission Motivation Proposed channelization would increase the simplicity of the 802.11ah standard by enabling each possible usecase at same portion of frequency band. Allocating 918~928MHz to 1MHz Channels would be attractive for a harmonization to enhance the global commonality. –Singapore, Korea, Japan have their 1MHz channels starting from >916MHz Slide 3

4. doc.: IEEE 802.11-12/0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission Slide 4 Proposal

5. doc.: IEEE 802.11-12/0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission Slide 5 Proposed US Channelization 12345678910111213 123456 123 1 1 MHz 2 MHz 4 MHz 8 MHz 16 MHz 902 MHz 918 MHz 928 MHz Ch1Ch10 MCS0-rep2-1MHz Beacon T.B.D. (e.g. Either or Both MCS0-rep2 1MHz MCS0 2MHz Beacon) T.B.D. (Usage of 1MHz Channel) Proposed

6. doc.: IEEE 802.11-12/0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission Slide 6 Straw poll Do you agree … IEEE802.11ah Task Group allocates 1MHz bandwidth channels side by side from 918MHz up to 928MHz for US 902~928MHz ISM band. –Yes –No –Abstain

7. doc.: IEEE 802.11-12/0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission Slide 7 Backup slides

8. doc.: IEEE 802.11-12/0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission 1 902 MHz 928 MHz 1 MHz 234 2 MHz 12 4 MHz 1 8 MHz 56789 10 111213 3 4 56 2 3 16 MHz 1 Ch 1Ch 10 918 MHz 1 MHz 2 MHz 4 MHz 917.5 MHz 923.5 MHz Korea: Japan: US: 925 MHz 1 MHz Ch 1Ch 5 920 MHz Singapore: 927.5 MHz 1 MHz Ch 1Ch 11 916.5 MHz Slide 8

9. doc.: IEEE 802.11-12/0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission Slide 9 References [1]DCN 1329r1, “Motions and Strawpoll on Channelization for 11ah ”, 2011- 9-21 [2]DCN 1535r0, “US Channelization”, 2011-11-07 [3]DCN 1571r1, “US Channelization and Bandwidth Considerations for 802.11ah”, 2011-11-10 [4]DCN 1516r0, “802.11ah Channelization Proposal for US”, 2011-11-07 [5]DCN 1318r0, “Japanese Channelization for 802.11ah ”, 2011-9-21 [6]DCN 1133r0, “Singapore Sub 1GHz Frequency Bands for IEEE 802.11ah ”, 2011-8-11 [7]DCN 1422r0, “11ah Channelization of Korea”, November 7, 2011

10. doc.: IEEE 802.11-12/0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission Background Indoor coverage of 1MHz BSS over 2MHz BSS. –Assumption: Distance exponent of Path Loss=36.7, Sensitivity improvement=6dB Outdoor coverage of 1MHz BSS over 2MHz BSS. –Assumption: Distance exponent of Path Loss=37.6, Sensitivity improvement=6dB Battery current constrained maximum Tx Power P Tx subcarrier@1MHzBSS /P Tx subcarrier@2MHzBSS =3dB (i.e. power per sub-carrier) Slide 10 Area1,Covered by MCS0,2MHz Area2,Covered by MCS0-Rep2,1MHz Area1,Covered by MCS0,2MHz Area2,Covered by MCS0-Rep2,1MHz Area2/Area1=2.0 Area2/Area1=1.1 1.45 R R 1.74 R R

11. doc.: IEEE 802.11-12/0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission End Slide 11