Analyzing the New TV White Space Rules


Published on

Analyzing the New TV White Space Rules reviews the benefits and potential challenges relative to the newly available rules for this unlicensed spectrum, including information about the Database Service Providers and what to expect next.

Published in: Technology, Business
  • Be the first to comment

  • Be the first to like this

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide
  • White Space considering protected TV stations but does not include buffer zones or TVBD specific rules
  • Personal/Portable 40mW, Fixed TVBD
  • For example, SBI is working with organizations and countries such as Ofcom in the UK
  • Notice of Proposed Rule Making
  • Receivers such as Cable Head-ends
  • For example, Fixed TVBD location can be configured by a professional installer, and any technology can be used to determine geo-location within +/-50m accuracy
  • Rules also demand that TVBDs must only receive channel lists from authorized database providers.
  • Analyzing the New TV White Space Rules

    1. 1. Welcome to:<br />Analyzing the New <br />TV White Space Rules<br />VoIP Users: If you are using VoIP for the audio portion of the presentation, you should already be connected to audio using your computer’s microphone and speakers (VoIP). A headset is recommended.<br />Telephone Users: If you are joining the audio portion of this presentation VIA TELEPHONE, and haven’t already dialed in, simply dial the number you see in the section of the control panel marked “AUDIO” and use the access and pin codes provided there.<br />Questions: We will address questions at the conclusion of this webinar. You may send your questions to us ANYTIME throughout the presentation-- via the text chat tool in the control panel, titled “QUESTIONS”.<br />Viewing Tip: At any time throughout the presentation you may MINIMIZE the CONTROL PANEL and view just the presentation screen by clicking on the small double black arrows at the TOP of the control panel .<br />This session is being recorded. We will send all attendees a link where you can access it as soon as it is posted.<br />
    2. 2. Sponsors<br />Online:<br />Email:<br />Phone: 202.463.4310 <br />Offices: 1140 19th Street, N.W., Suite 600 <br /> Washington, D.C. 20036 <br /> ® <br />Online:<br />Email:<br />Phone: US toll free: +1.800.598.7426 or +1.407.792.1570, Lake Mary, FL<br />
    3. 3. Presenters<br />Don Joslyn<br />Director of Software Architecture, Spectrum Bridge, Inc.<br />Stephen Coran<br />Partner, Rini Coran, PC<br />Neeraj Srivastava<br />VP Marketing & Business Development, Spectrum Bridge, Inc. <br />
    4. 4. Overview of the Rules<br />Don Joslyn<br />Director of Software Architecture, Spectrum Bridge, Inc.<br />
    5. 5. Quick Recap:<br />What is TV White Space?<br />We are talking about the set of 6MHz VHF and UHF channels traditionally reserved for broadcast Television.<br />Since the Digital Transition was completed, this encompasses channels 2-51 with some limitations (channel 37 is reserved for special applications).<br />
    6. 6. TV White Space is the Gaps<br />This map shows the service areas for a single TV channel (Channel 9) in the northeast US. <br />Everything else on the map is “White Space”, representing spectrum that is potentially available for use by new TV Band devices.<br />
    7. 7. The Macro Level View<br />Rolling up all the “White Space” creates a nationwide footprint...<br />…but the FCC rules limit how much whitespace each device type can access.<br />
    8. 8. An Example of the Limitations<br />In any given location (e.g. Zip Code 32746 Lake Mary, Florida), the channel availability will vary by device type after applying the FCC rules.<br />
    9. 9. Worldwide Activity<br />This is a review of US rules but similar activities are ongoing worldwide.<br />
    10. 10. FCC rules<br />First set of rules came out in November 2008. After much debate and protest a revised set of rules was published in September 2010.<br />In addition a separate public notice is due to be published on Database providers.<br />
    11. 11. White Space is Unlicensed with a Twist<br />In many ways TV White Space rules mirror those of the Second ISM band which many of us are familiar with as it is used by 802.11 (WiFi), Bluetooth, and cordless phones.<br />The twist is that this band has not been cleared so, depending on where you are in the country and what type of device you are using the spectrum that you can use varies.<br />The 2008 rules proposed this be dealt with by both sensing and a database. The 2010 rules permit database only options.<br />Note that the new rules allow for someone to prove a sensing only solution is an acceptable option.<br />
    12. 12. Requirement Categories<br /><ul><li> The rules define how various incumbent users are to be protected
    13. 13. The rules define different classes of devices that can use the TV White Space (fixed, P/P Mode I, P/P Mode II)
    14. 14. The rules define steps that the devices must take before they can use available channels
    15. 15. The rules define TV White Space Database requirements
    16. 16. The rules may well be “Fine tuned” as more is learned about this mode of spectrum sharing</li></li></ul><li>Broadcast TV Stations are Protected<br />Information on TV broadcast licenses is held in an FCC database (Consolidated Database System - CDBS). <br />The “protection area” is calculated using an FCC algorithm based on “F” curves. The resulting area does not guarantee TV reception nor does it preclude reception outside the area but this is the area considered by the database.<br />The database must add “Buffer zones” to ensure that the TV White Space devices do not transmit into the protected zone.<br />
    17. 17. Other Protected Entities<br />The FCC licenses transmitters and this information can be obtained from the FCC (either CDBS or ULS) however there are users of the band that are receivers only (e.g. Cable headends, TV translator receive sites). These are not tracked by the FCC.<br />The rules provide for these entities to register with a Database to ensure that they are protected.<br />
    18. 18. Wireless Microphones<br />Two types of wireless microphones use TV White Space. The first, licensed, is typically used by the broadcast industry.<br />The second, technically illegal, is used by a wide range of churches, schools, entertainers and events.<br />The Licensed users have been provided with a mechanism to register their locations of use in a White Space database to get protection.<br />The FCC has dealt with the unlicensed users by ensuring that a significant percentage of the TV White Spaces will be reserved for them; while not stopping them from using the other available TV White Space.<br />
    19. 19. New TV White Space Devices<br />As an unlicensed band, devices are power limited. <br />Three thresholds, fixed 4W, portable 100mw and portable 40mw. These will be discussed in more detail by Neeraj and Steve.<br />The rules do not specify anything about technology.<br />Expect solutions based on existing standards (WiFi, WiMax, LTE) as well as new ones.<br />The rules require location awareness but do not specify how this is to be achieved.<br />
    20. 20. TV White Space Database<br />The FCC has proposed that there should be multiple independent Database Providers.<br />Multiple providers should provide competition that limits costs and enhances innovation.<br />The database providers must:<br /><ul><li> Provide channel availability lists to TVWS devices based on location and device type
    21. 21. Provide mechanisms for protected entities to register for their protection (e.g. MVPD, LPTV, TV Translator Sites)
    22. 22. Validate FCC ID of Mode I Personal/Portable devices
    23. 23. Share registered protected entity data with other database providers
    24. 24. Provide mechanisms to audit the protection</li></li></ul><li>Fixed Use of TV White Spaces<br />Stephen Coran<br />Partner, RINI CORAN, PC<br />
    25. 25. Definition<br />Fixed Device – A TVBD that transmits and/or receives radio communication signals at a specified fixed location. <br /><ul><li>A fixed TVBD may select channels for operation itself from a list of available channels provided by a TV bands database, initiate and operate a network by sending enabling signals to one or more fixed TVBDs and/or personal/portable TVBDs.
    26. 26. Fixed devices may communicate with personal/portable devices.</li></li></ul><li>Operating Rules<br />Power<br /><ul><li>Maximum of 4 Watts EIRP</li></ul>Base Station Height<br /><ul><li>Maximum of 30 meters above ground level
    27. 27. Maximum of 76 meters above average terrain for tower site
    28. 28. Precludes deployment in many hilly areas of the country</li></ul>CPE Height<br /><ul><li>FCC eliminated 10 meter minimum height above ground level when it eliminated simultaneous spectrum sensing requirement
    29. 29. 76 meter limit for base stations applies to CPE</li></ul>Channel Widths<br /><ul><li>6 megahertz, but can be combined with available adjacent channels</li></li></ul><li>Channel Availability<br />Channel 2 (54-60 MHz)<br />Channels 5-6 (76-88 MHz)<br />Channels 7-13 (174-216 MHz)<br />Channels 14-20 (470-512 MHz)<br />Channels 21-36 (512-608 MHz) – Shared with personal/portable.<br />First channel on either side of Channel 37 that is not occupied by a licensed service is reserved for wireless microphones.<br />Channels 38-51 (614-698 MHz) – shared with personal/portable<br />
    30. 30. Geo-location Database<br />Channel must be available as determined by database, and operations on channel must cease if database indicates channel no longer available.<br />Fixed TVBDs must avoid co-channel and first-adjacent channels.<br />Fixed TVBDs must access database at least once a day to verify continuing availability of channels.<br />Location of fixed TVBD must be accurate to within 50 meters as determined by incorporated geo-location or professional installer.<br />
    31. 31. Interference Protection<br />Who is entitled to interference protection?<br /><ul><li>Digital TV, digital and analog Class A TV, low power TV, TV translator and TV booster stations
    32. 32. TV translator and MVPD receive sites within 80 km of the relevant contour
    33. 33. Broadcast Auxiliary Service links within 80 km of TVBD
    34. 34. PLMRS/CMRS co-channel stations within 134 km of TVBD and adjacent-channel stations within 131 km of TVBD
    35. 35. Canadian and Mexican TV station contours not protected within US borders</li></li></ul><li>Other Technical Rules<br />TVBDs must be equipped with automatic power control to limit operating power to the minimum necessary for successful communication<br />Fixed TVBDs must incorporate security measures . . .<br /><ul><li>To prevent device from accessing unapproved databases
    36. 36. To ensure that unauthorized users cannot modify the device or control features
    37. 37. To ensure that they are capable of obtaining lists of available channels only with authorized database administrators
    38. 38. To prevent corruption or unauthorized interception of data</li></li></ul><li>Things to Remember<br />Unless the FCC changes the rule, the HAAT restriction will preclude deployments in hilly areas, and drive up infrastructure costs and delay service in some of these areas.<br />Propagation characteristics of low-frequencies increases potential for interference and self-interference.<br />Propagation characteristics and antenna sizes differ across the white spaces.<br />No FCC-mandated process to coordinate or mitigate interference among fixed TVBD users, though database administrators may add this feature.<br />
    39. 39. Low Power Mobile Devices<br />Neeraj Srivastava<br />VP Marketing & Business Development, Spectrum Bridge, Inc. <br />
    40. 40. Low Power, Portable Devices<br />“TV White Space is WiFi on Steroids” ─ Larry Page, co-founder Google<br />
    41. 41. Why TV White Space<br />Improvements of 2X to 3X over existing options<br />In indoor applications the improvement in propagation through walls with the additional spectrum that has been made available should produce a 2-3X range improvement over existing 2.4GHz WiFi solutions.<br />WiFi TV White Spaces<br />Source: Dell Inc.<br />
    42. 42. Low Power, Portable Devices<br /><ul><li>Low Power Portable devices can only operate in ch. 21-36, 38-51
    43. 43. Ch. 37 is reserved for medical telemetry & ch. 36 & 38 are reserved for wireless microphones (if unoccupied by TV stations)
    44. 44. Power output is 100mW (EIRP) for any channel non-adjacent to a TV broadcast
    45. 45. Power output is 40mW (EIRP) for any channel adjacent to a TV broadcast
    46. 46. Sensing is no longer a requirement (optional)</li></li></ul><li>Two Types of Portable Devices<br /><ul><li> Mode II
    47. 47. A portable device that has geo-location capability and can access the database to obtain a list of available channels
    48. 48. Geo-location accuracy is +/- 50m & must be re-checked at power-on and every 60s while in active operation (non-sleep mode)
    49. 49. Mode II device can select its channel of operation
    50. 50. Mode II device can initiate and operate a network of fixed and/or portable devices
    51. 51. Mode II device can provide a list of channels to a Mode I device
    52. 52. Mode I
    53. 53. A portable device that does not have geo-location capability
    54. 54. Mode I device must obtain a list of channels from a Mode II or fixed device
    55. 55. Mode I device may NOT initiate a network of fixed and/or portable devices
    56. 56. Model I device may NOT provide a list of channels to other devices</li></li></ul><li>Typical Access Point Scenario<br /><ul><li> Mode II device obtains list of channels from the database
    57. 57. Mode II device selects channel(s) of operation
    58. 58. Mode II device initiates network (SSID) and allows client devices to connect</li></ul>TVWS Database<br />Access Point – Mode II device<br />Client devices – Mode I devices<br />
    59. 59. Typical Mode II Client Scenario<br /><ul><li> Mode II device obtains list of channels from the database
    60. 60. Mode II device selects channel(s) of operation
    61. 61. Mode II device initiates network (SSID) and allows client devices to connect</li></ul>TVWS Database<br />Master Device – Mode II device<br />Client devices – Mode I devices<br />
    62. 62. Next Gen Wi-Fi: IEEE 802.11af<br /><ul><li> Task Group formed in Jan 2010
    63. 63. Chair: Rich Kennedy (Research In Motion)
    64. 64. Vice-chair: Peter Ecclesine (Cisco Systems)
    65. 65. Objective: Define modifications to both the 802.11 physical layers (PHY) and the 802.11 Medium Access Control Layer (MAC), to meet the legal requirements for channel access and coexistence in the TV White Space.
    66. 66. Uses 5, 10, & 20MHz channels that can operate in TV White Spaces.
    67. 67. See for more details.</li></li></ul><li>Q & A<br />Answering now…<br />Send Additional Questions with your Webinar Survey…<br />Following slide contains direct contact information…<br />Link to recorded session will be sent to all attendees…<br />
    68. 68. Thank you<br />Online:<br />Email:<br />Phone: 202.463.4310 <br />Offices: 1140 19th Street, N.W., Suite 600 <br /> Washington, D.C. 20036 <br /> ® <br />Online:<br />Email:<br />Phone: US toll free: +1.800.598.7426 or +1.407.792.1570, Lake Mary, FL<br />