sg-whitespace-09-0007-07-0000

1. sg-whitespace-09-0007-07-0000

2. 802 Whitespace Use CasesGoal: to help the 802 EC to determine next steps for 802 and its WG's in the TVWS by presenting known use cases

3. Whitespace Use Case Review • Group decision to discuss use cases based on the regulatory constraints • ≤4W fixed devices Use Case • ≤4W fixed device to ≤100mW portable devices Use Case • ≤100mW portable devices Use Case • ≤50mW (Sense Only) portable devices Use Case • ≤40mW portable devices Use Case • International Use Case • Future looking NOI Use case • Shellhammer Input • Broadband wireless internet access? Yes, including VOIP over broadband, but may use the frequencies for other applications like sensors or in-home devices that do not require broadband wireless internet access. • Ranga Reddy Input • Star/tree/mesh? Maybe? • Have we covered sufficiently the requirements? • Categorize by power • Terms: Fixed, Personal/portable, Master, client • Identify all devices that might be involved.  • Contrast what is different between licensed bands and new frequency Note: devices do not need to be operating at maximum power but rather ‘up to’ => “≤”

4. Whitespace Use Case Terms • Terms from the FCC Report and Order • Fixed/Outdoor Device (ex: towers, water towers, homes, farms, farm silos, etc.) • Personal/Portable Device (ex: portables, laptops, smartphones, desktops, etc.) • TV Protected Contour (41 dBμV/m on channel) • ”receive antenna”** height for fixed deployments: 10m • ie Height for fixed/outdoor device: ≤3 m up to 30m (see Table 3 in the R&O) • 10m seems to be to provide a base “interference distance” for a typical DTV receive antenna ** The ambiguity of the phrase “receive antenna” will likely be the subject in a number of re-consideration filing that FCC will see after publication of the R&O (FCC 08-260) & its errata

5. US FCC Antenna Height and Channel Use R&O Table 3 • No fixed unlicensed TVBD can transmit either co-channel or adjacent channel, inside a TV channel's protected contour (41 dBuV/m) and within the keep-out distance specified in Table 3 of the R&O. • note that the height of the fixed/outdoor broadband transmit antenna is allowed over a range of <=3m up to 30 m (see Table 3 in R&O 08-260) • 10 m is in fact related to the height of the sensing antenna to provide reliable sensing to secure a base "interference-free distance" from a DTV station or wireless microphone operation as long as the transmit antenna is not installed higher than the sensing antenna. The height of the receiving antenna would simply improve (>10m) or worsen (<10m) the performance of the fixed broadband operation itself but will have no effect on interference potential towards incumbents • in practice, it is likely that these three (sensing, receiving, transmitting) antennas will be integrated into one physical unit, thus installed at the same height, currently between 10 m and 30 m.

6. US FCC Regulatory Use Case Matrix Unlicensed TV Band Device transmissions generally* allowed within a TV protected contour are indicated by "A" and transmission cases disallowed are indicated by "D". Most channels are available outside a TV protected contour (41 dBuV/m) beyond the keep-out distance specified in Table 3 of the R&O * Note: Some channels are excluded from use by some or all TVBD's, such as Channel 37.  This exclusion even applies at locations not within a TV protected contour nor within a TV protected contour's keep-out distance

7. Architectures • The Report and Order does not limit architectures - star/tree/mesh are possible • Coupling between architectures and market place (what are the use cases the market will demand) • 802.22 has a proposed star architecture for the 4W Whitespace use case

8. 4W Fixed Whitespace Use Case • Outdoor use outside the TV protected contour (41dBμV/m) and beyond the keep-out distance of all TV channels used in the area and their adjacent channels • Towns, villages • Rural areas, Farms • Suburbs star/tree/mesh Fixed Devices • Grain Elevator Enterprise • Slaughterhouse Enterprise • Waterpark Enterprise • Hunting Lodge • Fishing Lodge • Agriculture Enterprise • Military Equipment • Public Safety Equipment • All Business Enterprises Geo-location Database of Incumbent Stations • Fixed Registered Master • Database Access • Cell Towers Installable • Private Comm. Systems • Emergency Services • Water Towers • 20-30km Coverage • Suburban • Consolidated Access (MDU/MTU) • Military Operations • Public Safety Fixed Devices • Light Residential/Suburban • Farming & Agricultural Fixed Devices • Ranching • Mountainous

9. 4W to 4W fed by 100mW Use Case • Indoor or outdoor use outside of both the protected contour • (41dBμV/m) and also the keep-out distance of all channels or adjacent channels in use in the area of operation • Towns, villages • Rural areas, Farms • Suburbs star/tree/mesh 100mW Personal/Portable Devices Geo-location Database of Incumbent Stations • Onboard • Roaming computing devices • Internet Access • VOIP ≤4W Fixed CPE Access point (Portable TVBD or Wi-Fi) • 4W Fixed Master • Database Access • Cell Towers Installable • Private Comm. Systems • Emergency Services • Water Towers • 20-30km Coverage • Suburban • Consolidated Access (MDU/MTU) • Military Operations • Public Safety • Private Radio Station 100mW Personal/Portable Devices 100mW Personal/ Portable Devices • Mobile • Push to Talk • Internet Access • VOIP • Movable Systems • Internet Access • Onboard Tractors • VOIP • Broadcast Radio

10. 4W to portable 100mW Use Case • Indoor or outdoor use outside of both the protected contour • (41dBμV/m) and also the keep-out distance of all channels or adjacent channels in use in the area of operation • Towns, villages • Rural areas, Farms • Suburbs • Urban/Metropolitan – only where spectrum is available • Download bandwidth > Upload bandwidth star/tree/mesh 100mW Personal/Portable Devices • Onboard • Roaming computing devices • Internet Access • VOIP Geo-location Database of Incumbent Stations • 4W Fixed Master • Database Access • Cell Towers Installable • Private Comm. Systems • Emergency Services • Water Towers • 20-30km Coverage • Suburban • Consolidated Access (MDU/MTU) • Military Operations • Public Safety • Private Radio Station 100mW Personal/Portable Devices • Mobile • Push to Talk • Internet Access • VOIP 100mW Personal/ Portable Devices • Movable Systems • Internet Access • Onboard Tractors • VOIP • Broadcast Radio Personal/Portable Devices are directly connected at 100mW near the Fixed Master 1/20/2009 10

11. 100mW Whitespace Use Case • Indoor or outdoor use outside of both the protected contour • (41dBμV/m) and also the keep-out distance of all channels or adjacent channels in use in the area of operation • Suburban Neighborhoods • Farm • Wireless device access in a residence or farm or neighborhood • Areas of weak TV broadcast signals • Access Points – may or may not be for broadband Internet access • Unlicensed Voice Applications – ex: Femtocell-like • Point-to-Point Wireless • Physical Area • LAN 100m • Residential • Neighborhood or farm star/tree/mesh? Personal/Portable Devices Personal/Portable Devices Geo-location /Regulatory Database of Incumbent Stations Personal/Portable Devices Registered Master

12. 50mW (Sensing Only) Whitespace Use Case • Indoor or outdoor use outside of both the protected contour • (41dBμV/m) and also the keep-out distance of all channels or adjacent channels in use in the area of operation • Access Points • Unlicensed Voice Applications – ex: Femtocell-like • Point-to-Point Wireless (ie Peer to peer/DLS) • Portability • Body Area Networks (BAN) – may not be broadband Internet access • Area • Indoor Networks • PAN • 10m Personal/Portable Devices Personal/Portable Devices Personal/Portable Devices Registered Master

13. ≤ 40mW Whitespace Use Case • In-building outside the protected contour (41dBμV/m) and beyond the keep-out distance of all channels being used in the area • Body Area Networks (BAN) – may not be broadband Internet access • Protection Beacons and Microphones • In-home backhaul • Network Sensors/Control Devices • Smart Utility Networks • PANs Personal/Portable Devices Personal/Portable Devices Personal/Portable Devices

14. TVWS International Service Impacts • Could Service Rules from Different Regulatory domains affect use-cases? • Any need to Harmonize Regulatory Domains/Rules for TVWS? • Are Cross-Border/National Boundaries an issue to use-cases? • Regulatory domains to harmonize?.. • US rules (Part 15, Part 74, and Part 90) • Canada rules: Licensing of fixed point-to-multipoint TVWS with base station at up to 500 W EIRP at 30 m antenna HAAT (reduced power for higher HAAT) for rural broadband access • Netherlands Antilles – Initial allocation of "clean spectrum" • Transmission output of portable devices must stay within RF Safety Limits (which means allowance of power levels higher than 100mW) • Transmission output of fixed devices must correspond with heights required under the RF Safety Limits (which means allowance of power levels higher than 4W EIRP) • Aspiring operators most roll out nationwide networks (meaning the eventual use of dynamic portable MAN´s and RAN´s) • Asia rules • Australia rules

15. TVWS International Service Impacts • Regulatory domains to harmonize continued.. • EU rules • UK (OFCOM) • In June 2008, Ofcom issued a Consultation Document on "Digital Dividend Review; Geographic Interleaved Awards 470 - 550 MHz and 630 - 790 MHz".  This document proposes that licences will be auctioned to allow use to be made of the unused blocks of spectrum between the 6 national digital TV multiplexes (i.e. whitespaces).  It is anticipated that such licences could be used for a range of applications, and hence they are proposed to be auctioned on a service-neutral and technology-neutral basis.  The Technical Licence Conditions will be specified on the assumption that the licences will be used for a "digital TV like" application, although other applications could be used providing they fit within the technical parameters specified.  (There may also subsequently be an opportunity to amend the technical licence conditions.) • The Consultation Document acknowledges that there may be an opportunity to use cognitive radio in this band, although such use is not considered in the document, however it states that Ofcom intend to issue another Consultation Document in the future specifically on the subject of cognitive radio. •  At the same time, Ofcom also issued a complementary Consultation Document on "Digital Dividend Review: 550-630 MHz and 790-854 MHz".  This addressed those parts of the band which are to be cleared of TV broadcast operations, to enable licences to be auctioned, most likely for new mobile broadband networks.  Consequently these parts of the band are not really appropriate for consideration as whitespaces, and hence there is very much less opportunity for cognitive radio in these frequency blocks. • ITU has recommendations for worldwide TV whitespace technologies and approaches

16. NOI for higher power Use Case • Will represent a “high power use case” versus current 4W TVWS R&O & Errata • Higher base station power than 4W • CPE power is unlikely to be much higher than 4W because of RF safety concern • NOI work status is unknown and may not be actively “in progress” • Maybe geared toward very Rural low density deployments covering large areas • Will provide larger coverage areas at low cost • May require both database and sensing together • May require adjustments/amendments to R&O’s “fixed wireless” rules • 40 km point-to-point (phased array?) application possible

17. Discussion Inputs • Use case: broadband wireless Internet? Not necessarily in all cases • Whether to contribute star, tree, or mesh as part of a use case? Within a use case? • Health issues? • Security? • Keepaway zones/incumbent protection • Use of the 4W by cell towers/organizations/safety/emergency responders/etc • Economics of using competing/complementing wireless technologies • Data base • Sensing • Cognitive radio applications/Interactive radio station (IP-based transport) • Topologies depend on the use cases • Scott Blue’s Use Cases • 4W fixed to 4W fixed (database access can be bootstrap) • 4W fixed master 100mW portable client • 100mW master to 100mW client (40mW for both in the 1st adjacent channel) • 50mW sensing only client to client

18. Use Case Conclusions THE TVWS USE CASES WILL.. • ..be part of a larger Wireless eco-system • ...be driven by Market demands, Policy requirements, & Service Rules • ..may be hard to predict the most common use cases before we “get there” • ..will facilitate, and be facilitated by, innovation & policy goals • ..focus on standardization may need to be in sub-channelization mechanism for very low power (<40mW) devices