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doc.: IEEE g Submission Licensed spectrum (low data rate) MHz –FCC part 22/90 July 2010 Roberto Aiello, John BuffingtonSlide 3
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doc.: IEEE 15-10-0542-00-4g
Submission
Roberto Aiello, John Buffington
July 2010
Slide 1
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Data rates in licensed bands]Date Submitted: [July 2010]Source: [Roberto Aiello, John Buffington] Company [Itron]Address [San Diego, CA. Liberty Lake, WA USA]Voice:[], FAX:], E-Mail:[[email protected], [email protected]]Abstract: [This presentation proposes data rates and modulation parameters for licensed bands in 802.15.4g]
Purpose: [For information]Notice: This document has been prepared to assist the IEEE P802.15. 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 P802.15.
doc.: IEEE 15-10-0542-00-4g
Submission
Roberto Aiello, John Buffington
Summary
• SUN industry data rate requirements• Licensed bands of interest• Proposed data rates and modulation
parameters
July 2010
Slide 2
doc.: IEEE 15-10-0542-00-4g
Submission
Roberto Aiello, John Buffington
Licensed spectrum (low data rate)
• 450-470 MHz– FCC part 22/90
July 2010
Slide 3
doc.: IEEE 15-10-0542-00-4g
Submission
Roberto Aiello, John Buffington
Data rate requirements
• Example OpenSG AMI-Net requirements (*)– Worst case meter read transaction between meter
and data access point – Up to 2,400 bytes delivered in <5 seconds with
>98% reliability• Minimum required data rate (no overhead)
– 2,400 bytes/ 5 sec = 3.8 kbps
(*) SG Network System Requirements Specification v4.0
July 2010
Slide 4
doc.: IEEE 15-10-0542-00-4g
Submission
Roberto Aiello, John Buffington
Data rates with overhead
• 5 kbps too tight• 10 kbps marginal• 20kbps probably minimum reasonable
July 2010
Slide 5
Option #1 Option #2 Option #3
number of hops 0 0 0FEC 0 100% 100%security * no no yesMAC retransmission 0 0 0MAC protocol 20% 20% 20%
data rate (kbps) 4,608 8,448 11,264
* adds 800 bytes
overhead
doc.: IEEE 15-10-0542-00-4g
Submission
Roberto Aiello, John Buffington
Proposed data rates
• Modulation similar to:– 470-510 MHz (China)– 863-870 MHz (Europe)– 950 MHz (Japan)
July 2010
Slide 6
Mandatory data rate
Optional data rate #1
Optional data rate #2
data rate (kb/s) 10 20 30modulation GFSK GFSK 4-GFSKmodulation index 0.5 0.5 0.33channel spacing (kHz) 25 50 50
