TV White Space: From Possibilities to Precedents Super WiFi Summit Miami Beach Convention Center...
-
Upload
amira-sorsby -
Category
Documents
-
view
214 -
download
0
Transcript of TV White Space: From Possibilities to Precedents Super WiFi Summit Miami Beach Convention Center...
TV White Space: From Possibilities to Precedents
Super WiFi SummitMiami Beach Convention Center
February 2, 2012
Julius Knapp, Chief Office of Engineering and Technology
Note: The views expressed in this presentation are those of the author and may not necessarily represent the views of the Federal Communications Commission
Unlicensed Devices: Part Unlicensed Devices: Part 1515
Part 15 provides for operation of low power radio transmitters without the need for the user to obtain a license Operating conditions:
May not cause harmful interference Must accept any interference received
Minimizes likelihood of interference by: Identifying permissible frequencies Limiting power to very low levels Requiring equipment authorization
Permissible frequencies: Unlicensed devices are not “allocated” spectrum (except Unlicensed-PCS) Generally operate on unused spectrum or on “overlay” basis Or in ISM “junk bands”: 915 MHz, 2.4 GHz, 5.8 GHz Restricted from operating in public safety & low signal bands
Industry has developed voluntary protocol standards within the framework of the rules: Wi-Fi, Bluetooth; Zigbee; etc.
Wide Variety of Applications Wi-Fi devices - Home and
business networks; hot-spots Community, urban & rural
broadband networks by WISPs Bluetooth headsets & keyboards Automobile keyless entry Wireless baby monitors In-home video distribution Remote control toys Toy walkie-talkies Utility meter readers & smart grid
energy control Tank level meters Traffic light controls Crane controls Lighting controls & dimmers Wireless door bells
Cordless phones Garage door opener controls Sensors for automatic doors Industrial automation controls RF ID systems Retail anti-theft systems Security alarm systems Wireless speakers Satellite Radio-to-FM radio Convergence w licensed devices Medical camera pills Medical panic alerts Meat thermometers Inventory control Pool cover controllers Diaper wetness sensor And the list goes on . . .
TV White Spaces
2 4 5 7 9
3 6 8 10
Non-Broadcastspectrum
Non-Broadcastspectrum
New York CityFull PowerTV Stations
PhiladelphiaFull PowerTV Stations
Low Power TV
WhiteSpace
WhiteSpace
WhiteSpace
WhiteSpace
Etc.
Etc.
• TV channels are “allotted” to cities to serve the local area
• Other licensed and unlicensed services are also in TV bands
• “White Spaces” are the channels that are “unused” at any
given location by licensed devices
Low Power TV
Only for illustrative purposes
WirelessMicrophones
WirelessMicrophones
5
TVWS Spectrum TVWS Spectrum AvailabilityAvailability Available spectrum varies by location In rural areas many channels are available In big cities only a few channels may be available Examples of availability in UHF channels 21 – 51 (Illustrative):
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
New York
Washington, DC
Full Service DTV Station
Low Power TV Station
Channel Open/ Adjacent to TV
Channel Open/ Not Adjacent to TV
In less dense areas many channels are available. For example: Wilmington, NC: 25 channels = 150
MHzHarrisburg, PA: 19 channels = 114 MHz
TV White Spaces Final rules adopted Sept. 2010:
Provides first new spectrum for unlicensed below 5 GHz in many years Introduces new spectrum access model based on geolocation & data base of protected services Also allows for spectrum sensing w/ rigorous review & authorization process
Services protected in the data base: TV digital and analog Class A, low power, translator
& booster stations Broadcast auxiliary (wireless mikes) Cable head-ends and TV translators Land mobile Sites with significant wireless microphone use
6
Mode 1: Portable device obtains location/channels from fixed device
Mode 2: Portable device uses its own geolocation/data base access capability
Data Base
What We’ve Done
Jan. 26, 2011, the Commission’s Office of Engineering and Technology issued an Order in ET Docket 04-186, DA 11-131 that conditionally designated TVWS Data Base Administrators: Comsearch, Frequency Finder Inc., Google Inc., KB Enterprises LLC and LS Telcom, Key Bridge Global LLC, Neustar Inc., Spectrum Bridge Inc., Telcordia Technologies, and WSdb; later added Microsoft
March – May 2011 held 3 public workshops plus additional meetings & dialogue Extensive info at: http://transition.fcc.gov/oet/whitespace/
Sept. 14, 2011 – Announced 1st TVWS data base test - Spectrum Bridge
Dec. 2, 2011 - Announced 2nd TVWS data base test - Telcordia
Dec. 22, 2011: Approved first data base administrator - Spectrum Bridge
Dec. 22, 2011: Approved first TVWS device – Koos Technical Services, Inc. (KTS)
Jan. 26, 2012: First commercial deployment - Wilmington, NC
What We Are Doing
Accepting & processing applications for equipment certification
Continuing process to approve data base administrators
Delivery of wireless microphone registration process
Waivers to register certain TV receive sites in data base
Will soon address petitions for reconsideration of rules
Benefits of TV White Space Prime spectrum
Great propagation & coverage High amounts in much of the USA Close to spectrum used by commercial wireless services - - potential synergy
New IEEE 802.22™ standard: IEEE SA Emerging Technology of the Year Award Broadband wireless access over a large area up to 100 km Up to 29 Mbps per TV channel Can increase data rate through use of multiple channels
Wi-Fi & TV White Space is not an either-or proposition: Each may suit particular needs Wi-Fi has greater bandwidth but usage density is increasing When combined consumers & users could see significant benefits
Potential Applications
Broadband (generally)
Rural broadband Video – Monitoring,
surveillance, distribution
State & Local Governments
M2M Smart Grid Health Care Education Data traffic off-load
Provides a new opportunity for innovation and delivery of service, with potential for both research and commercial applications
Spectrum is open to everyone & and is available now
Potential uses limited only by the imagination
TV Broadcast Incentive Auctions
Incentive auctions would share auction proceeds with the current occupant to motivate voluntary relocation of incumbents
Otherwise, no incentive for current occupant to give back spectrum
Modification of FCC auction authority needed
Broadcaster participation in incentive auction would be voluntary
In an incentive auction, in exchange for a share of auction proceeds a broadcaster could:
Contribute one or more 6 MHz channels Choose to move from U to V Share spectrum with another broadcaster Or choose not to participate!
The FCC Would Need to Realign the Spectrum After the Auction
FCC would realign the spectrum into blocks to maximize efficiency and value
Without realignment, interference between television and wireless operations would increase
The FCC would work with industry to minimize any interference or coverage impacts of realignment, as we did for the DTV transition
Stations keep current channel numbers
Moves to a lower band would be voluntary based on broadcaster reserve price
TV TV TV TVBB BB
Adjacent ChannelInterference
Without Realignment:Reduced Broadband Bandwidth
TV TV BB
Adjacent ChannelInterference
With Realignment: Accommodates Increased Broadband Bandwidth
TV TV
Impact on TV White Space
Strong support in Congress for TV bands incentive auction Demand for more spectrum for wireless broadband Could generate $25 billion in revenues, plus 10x in economic benefits Some of revenue generated could be used to support build out of
public safety broadband network
Impact on TVWS will depend on legislation: House: Jumpstarting Opportunity with Broadband Spectrum - JOBS Act Senate: S-911 – Public Safety Spectrum Wireless Innovation Act Discussions under way in context of payroll tax negotiations FCC has advocated support to provide for both licensed and unlicensed
FCC would conduct rule making if legislation is passed
There will be white space; question is how much and where
FCC Notice of Inquiry on Dynamic Spectrum Access (ET Docket
10-237)
Notice of Inquiry (NOI) considers how dynamic access radios and techniques can provide a more intensive and efficient use of spectrum
Seeks comment on the current state of the art and how FCC can promote these technologies - - test-beds or modifying its spectrum management practices and policies
Covers both licensed services and unlicensed devices
What spectrum bands would be most suitable?
Asks whether TV White Space model might be used for other bands
Asks whether and how to incorporate spectrum sensing for other bands
Asks whether FCC provisions for secondary market arrangements could be enhanced to increase use by dynamic access radios
Asks how to improve FCC “Spectrum Dashboard” for DSA14
Conclusion
Questions?