June 2010
doc.: IEEE 802.19-10/0089r0
Tutorial Introduction Section
Date: 2010-06-23
Authors:
Name
Company Address
Steve Shellhammer Qualcomm
5775 Morehouse Dr
San Diego, CA 92121
Phone
E-mail
(858) 658-1874
Shellhammer@ieee.org
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Submission
Slide 1
Steve
Shellhammer,
June 2010
doc.: IEEE 802.19-10/0089r0
Abstract
• This presentation is the Introduction section of the July
Tutorial. It will be incorporated in the final version of
the Tutorial presentation.
Submission
Slide 2
Steve
Shellhammer,
June 2010
doc.: IEEE 802.19-10/0089r0
Tutorial Outline
• Introduction
– Brief overview of FCC rules
– Standards activities in TVWS
• Need for Coexistence
– The Coexistence Problem
– TVWS Use Cases
• IEEE 802.19.1 Project
– Project Title, Scope and Purpose
– Project Timeline
– System Design Document
• Possible Coexistence Solutions
– Add sub-bullets
Submission
Slide 3
Steve
Shellhammer,
June 2010
doc.: IEEE 802.19-10/0089r0
FCC Rules on TVWS
• In November 2008 the FCC issued a Report and Order (R&O) on
unlicensed wireless use of unused TV channels, called TV white
space (TVWS)
– A number of petitions for reconsiderations were filed and the FCC still needs to
respond to the petitions. Current forecasts are for the FCC to respond by the end
this year.
• In any given location in the US there are a number of TV channels
unused by the broadcast industry. The number varies
significantly from location to location
• Each channel is 6 MHz wide
• Channels are in the VHF and UHF frequency bands
– Details in a subsequent slide
• FCC defines two classes of TVWS devices
– Fixed
– Portable
Submission
Slide 4
Steve
Shellhammer,
June 2010
doc.: IEEE 802.19-10/0089r0
FCC Rules on TVWS
TV Channel
Frequency Band
Frequency (MHz)
Allowed Devices
2
VHF
54 – 60
Fixed
5–6
VHF
76 – 88
Fixed
7 – 13
VHF
174 – 216
Fixed
14 – 20
UHF
470 – 512
Fixed
21 – 35
UHF
512 – 602
Fixed & Portable
36
UHF
602 – 608
Portable
38
UHF
614 – 620
Portable
39 – 51
UHF
620 – 698
Fixed & Portable
Permissible TV Channels
Submission
Slide 5
Steve
Shellhammer,
June 2010
doc.: IEEE 802.19-10/0089r0
FCC Rules on TVWS
• Fixed devices use outdoor antenna
• Between 10 and 30 meters above ground
• Permitted TX Power
• Fixed – 30 dBm with up to 6 dBi antenna gain
• Portable – 20 dBm with no antenna gain
• Adjacent TV Channels
• Fixed – Not permitted
• Portable – Reduce power to 16 dBm
• Strict Out-of-band Emissions
• Classes of Portable Devices
• Mode I – Client
• Mode II – Access Point
Submission
Slide 6
Steve
Shellhammer,
June 2010
doc.: IEEE 802.19-10/0089r0
FCC Rules on TVWS
• Geo-location & Database access
• Must be supported in both Fixed and Portable Mode II devices
• Accuracy of 50 meters
• FCC will certify the official databases
• Spectrum Sensing
•
•
•
•
ATSC and NTSC TV signals
Wireless microphones
Sensing down to -114 dBm (approx -15 dB SNR)
Will consider “sensing-only” devices but with much more stringent
testing required
Submission
Slide 7
Steve
Shellhammer,
June 2010
doc.: IEEE 802.19-10/0089r0
Non-US TVWS Rules
• Other regulatory regions are also preparing TVWS rules
• Some of the regulatory regions working on TVWS rules include
–
–
–
–
–
Canada
United Kingdom
Singapore
Nederland Antilles
Finland
• The rules in these regions are likely to have some similarities with
the US rules but will likely not be exactly the same
• In other parts of the world the TV channel bandwidths are 6, 7
and 8 MHz. So TVWS support for these different bandwidth is
expected
Submission
Slide 8
Steve
Shellhammer,
June 2010
doc.: IEEE 802.19-10/0089r0
TVWS Related Standard Projects
Standard/Project
Summary
Status
IEEE 802.11af
WLAN in TVWS
Task Group working on draft
IEEE 802.19.1
Coexistence in TVWS
Open Call for Proposals
IEEE 802.22
WRAN in TVWS
WG Letter Ballot
IEEE 802.22.1
Beacon for Protection of Wireless
Microphones
Sponsor Ballot
IEEE 802.22.2
WRAN Installation and
Deployment
Developing Draft
ECMA 392
MAC/PHY in TVWS
Standard December 2009
IEEE 1900.4a
Mobile wireless access in TVWS.
Above MAC/PHY
Close to WG Letter Ballot
IEEE 1900.6
Logical Interface between
spectrum sensors
In Sponsor Ballot
ETSI RRS
Reconfigurable Radio Systems
Four active WGs
ITU-R WP1B, WP5A
???
???
Submission
Slide 9
Steve
Shellhammer,