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