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1 doc.: IEEE 802.15-<doc#>
<month year> doc.: IEEE <doc#> 12 March 2001 Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [TG3-Channel-Placement] Date Submitted: [2 July 2001] Source: [Chandra Vaidyanathan] Company [Aryya Communications] Address [444 N Frederick Av., Suite 309 Gaithersburg, MD 20877] Voice:[ ], FAX: [ ], Re: [] Abstract: [This contribution proposes a channel plan for WPAN.] Purpose: [To propose a channel plan for high-rate PHY.] Notice: This document has been prepared to assist the IEEE P It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P Chandra Vaidyanathan, Aryya Comm <author>, <company>

2 12 March 2001 Overview 2 Channel placement plans presented based on regulatory requirements FCC , ETS and ARIB STD-T66 FCC (new), ETS and ARIB STD-T66 Channel plan includes High-density user plan 802.11b co-existence plan Chandra Vaidyanathan, Aryya Comm

3 Channel Placement Plan - 1
12 March 2001 Channel Placement Plan - 1 Current draft based on regulatory emission requirements FCC (US), ETS (Europe) and ARIB STD T66 (Japan) Channel placement strategy Find the minimum and maximum center frequencies that meet the emission requirements based on the transmit spectral mask The middle channels are selected by maximizing inter-channel spacing Chandra Vaidyanathan, Aryya Comm

4 Summary of Regulatory Body Requirements
12 March 2001 Summary of Regulatory Body Requirements Transmit power Max power in US and Japan: dBm/MHz Higher power levels permitted in Europe Emissions: FCC requirements most restrictive at –41.25 dBm/MHz Emission requirements Chandra Vaidyanathan, Aryya Comm

5 Selecting Center Frequencies
12 March 2001 Selecting Center Frequencies 0 dBr = dBm/MHz Min center freq: GHz ( ) Max center freq: GHz ( ) Chandra Vaidyanathan, Aryya Comm

6 Channel Plan: High-user Density
12 March 2001 Channel Plan: High-user Density Channel ID Center Frequency (MHz) 1 2415 2 2433 4 2450 5 2468 Chandra Vaidyanathan, Aryya Comm

7 Channel Plan: 802.11b Co-existence
12 March 2001 Channel Plan: b Co-existence Channel ID Center Frequency (MHz) 802.11b Center Frequency (MHz) 1 2415 2412 3 2441 2437 5 2468 2462 Chandra Vaidyanathan, Aryya Comm

8 Channel Placement Plan - 2
12 March 2001 Channel Placement Plan - 2 Under the NPRM issued on May 11, 2001 digital modulation schemes can use FCC Use same strategy as before Find max and min center frequencies Maximize inter-channel spacing Chandra Vaidyanathan, Aryya Comm

9 Summary of Regulatory Requirements
12 March 2001 Summary of Regulatory Requirements Transmit power Higher transmit powers possible in the US Emission requirements Chandra Vaidyanathan, Aryya Comm

10 Channel Placement Min center frequency: 2.412 GHz (2.39 + 22)
12 March 2001 Channel Placement US and Europe: 0 dBr = 8.75 dBm/MHz Japan: 0 dBr = dBm/MHz Min center frequency: GHz ( ) Max center frequency: GHz ( – 22) Chandra Vaidyanathan, Aryya Comm

11 Channel Plan: High-user Density
12 March 2001 Channel Plan: High-user Density Channel ID Center Frequency (MHz) 1 2412 2 2428 4 2445 5 2461 Chandra Vaidyanathan, Aryya Comm

12 Channel Plan: 802.11b Co-existence
12 March 2001 Channel Plan: b Co-existence Channel ID Center Frequency (MHz) 802.11b Center Frequency (MHz) 1 2412 3 2437 5 2461 2462 Chandra Vaidyanathan, Aryya Comm

13 Conclusions Two channel plans presented
12 March 2001 Conclusions Two channel plans presented The inter-channel spacing is MHz which prevents adjacent channels from overlapping Both plans have a high-user density and b co-existence mode Since the second plan based on FCC permits higher transmit powers in the US it is recommended that this plan be adopted in the standard Chandra Vaidyanathan, Aryya Comm

14 12 March 2001 Backup Chandra Vaidyanathan, Aryya Comm

15 Summary of Regulatory Requirements
12 March 2001 Summary of Regulatory Requirements ETS Radiated power <= 20 dBm, and peak power density <= 10 dBm/MHz Out-of-band emissions < –20 dBm/MHz and –30 dBm ARIB STD-T66 Radiated power (non spread spectrum systems) <= 10 dBm Emissions should be less than –16 dBm (~ –27.3 dBm/MHz) in frequency bands [ GHz] & [2.483 – GHz] –26 dBm for frequencies < GHz and frequencies > GHz Chandra Vaidyanathan, Aryya Comm

16 Summary of Regulatory Requirements
12 March 2001 Summary of Regulatory Requirements FCC The maximum transmit power is limited to –1.25 dBm/MHz Emissions Less than –41.25 dBm/MHz in freq bands [ GHz] and [ GHz] (FCC ) Freq < 2.31 GHz and freq > 2.5 GHz should be either Less than –41.25 dBm/MHz (FCC ), or Less than 50 dBc (FCC ) Chandra Vaidyanathan, Aryya Comm

17 Summary of Regulatory Requirements
12 March 2001 Summary of Regulatory Requirements FCC and FCC Maximum transmit power can be up to either watt or 8 dBm in a 3 kHz bandwidth, whichever is lower Emissions in frequency bands GHz and GHz must be less than –41.25 dBm/MHz (FCC ) Emissions in frequency bands outside the 2.4 – GHz band, with the exception of the bands listed in item 1, should be 20 dB below the transmit power in the desired channel (FCC ) Chandra Vaidyanathan, Aryya Comm


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