doc.: IEEE /0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission Proposed US Channelization for IEEE ah Slide 1 Authors: Date: January 17, 2012 NameCompanyAddressPhone Shusaku ShimadaYokogawa Co Nakacho Musashino-shi, , Japan Stefan Aust NEC Communication Systems, Ltd Shimonumabe, Nakahara- ku, Kawasaki, Kanagawa , Japan Mitsuru IwaokaYokogawa Electric Co Nakacho Musashino-shi, , Japan Huai-Rong ShaoSamsung Electronics 3000 Orchard Parkway, San Jose, CA Lei Zhongding Institute for Infocomm Research 1 Fusionopolis Way,#21-01 Connexis Singapore

doc.: IEEE /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.

doc.: IEEE /0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission Motivation Proposed channelization would increase the simplicity of the ah 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

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

doc.: IEEE /0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission Slide 5 Proposed US Channelization 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

doc.: IEEE /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

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

doc.: IEEE /0092r1 January 2012 Shimada, Yokogawa Electric Corp. Submission MHz 928 MHz 1 MHz MHz 12 4 MHz 1 8 MHz MHz 1 Ch 1Ch MHz 1 MHz 2 MHz 4 MHz MHz MHz Korea: Japan: US: 925 MHz 1 MHz Ch 1Ch MHz Singapore: MHz 1 MHz Ch 1Ch MHz Slide 8

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

doc.: IEEE /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 /P Tx =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= R R 1.74 R R

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