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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’ => “≤ ”
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Project IEEE 802 Executive Committee Study Group on TV White Spaces – ADHOC USE CASE SUB-GROUP
Title ECSG ADHOC USE CASE SLIDE DECK
Date Submitted
2009-01-20
Source(s) Contributor: Nanci Vogtli, Affiliation Concrete Logic Voice: (408) 354-8070, e-mail: [email protected]: Richard Paine, Affiliation Self Voice: 206-854-8199, e-mail: [email protected]: Dan Lubar, Affiliation RelayServices Voice: (877) 569-5069, e-mail: [email protected]: Scott Blue, Affiliation: Sensable Radio, email: [email protected]: Gerald Chouinard, Affiliation CRC, email: [email protected]: Jack Unger, Affiliation WISPA , email: [email protected]
Abstract IEEE 802 ECSG on White Space ADHOC USE CASE slide deck to capture TVWS USE CASE Sceneraios
Purpose To provide input to the ECSG and others on possible use cases that will help clarify how the TVWS spectrum might be used and how these uses might possibly be addressed by IEEE 802 work.
Release The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.
Patent Policy and Procedures The contributor is familiar with the IEEE-SA Patent Policy and Procedures:
<http://standards.ieee.org/guides/bylaws/sect6-7.html#6> and <http://standards.ieee.org/guides/opman/sect6.html#6.3>.Further information is located at <http://standards.ieee.org/board/pat/pat-material.html> and <http://standards.ieee.org/board/pat>.
sg-whitespace-09-0007-05-0000
802 Whitespace Use Cases
Goal: to help the 802 EC to determine next steps for 802 and its WG's in the TVWS by presenting known
use cases
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’ => “≤”
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)
• Sensing antenna 10m height constrains the deployment of fixed devices• Antenna Height for fixed/outdoor device: ≤3 m up to 30m
(Table 3 in R&O)
• Antenna Height (sense or xmit?) for typical DTV receiver: 10m (DTV interference distance)
US FCC Antenna Height and Channel Use
No channels can be used inside the TV protected contour, which is located (41 dBμV/m) beyond the keep-out distance specified in Table 3 of the R&O.
R&O Table 3
Co-Channel (N)
Adjacent Channels
(N+/-1)
Alternate Channels
(N+/2 and beyond)
≤4W Fixed X
≤4W Fixed to ≤100mW Portable
X
≤100mW Personal X
≤50mW Sense Only Portable
X
≤40mW Portable X X
US FCC Regulatory Use Case Matrix
All channels are available outside the TV protected contour (41 dBμV/m) beyond the keep-out distance specified in Table 3 of the R&O
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
• 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
4W Fixed Whitespace Use Case
• Grain Elevator Enterprise• Slaughterhouse Enterprise• Waterpark Enterprise• Hunting Lodge• Fishing Lodge• Agriculture Enterprise• Military Equipment• Public Safety Equipment• All Business Enterprises
• Light Residential/Suburban• Farming & Agricultural
• Ranching• Mountainous
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
Fixed Devices
Fixed Devicesstar/tree/mesh
1/20/2009 8
4W to 4W fed by 100mW Use Case
• Onboard• Roaming computing devices• Internet Access• VOIP
• Mobile• Push to Talk• Internet Access• VOIP
• Movable Systems• Internet Access• Onboard Tractors• VOIP• Broadcast Radio
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
• 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
100mW Personal/Portable Devices
100mW Personal/Portable Devices
100mW Personal/Portable Devices
star/tree/mesh
Access point (Portable TVBD or
Wi-Fi)
≤4W Fixed CPE
1/20/2009 9
• 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?• Download bandwidth > Upload bandwidth
4W to portable 100mW Use Case
• Onboard• Roaming computing devices• Internet Access• VOIP
• Mobile• Push to Talk• Internet Access• VOIP• Movable Systems
• Internet Access• Onboard Tractors• VOIP• Broadcast Radio
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
100mW Personal/Portable Devices
star/tree/mesh
Personal/Portable Devices are directly connected at100mW near the Fixed Master
1/20/2009 10
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
Registered Master
Personal/Portable Devices
star/tree/mesh?
Personal/Portable Devices
Personal/Portable Devices
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
Registered Master
Personal/Portable Devices
Personal/Portable Devices
Personal/Portable Devices
≤ 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
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
• EU rules• Australia rules• UK (OFCOM)• Asia rules• 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)
• ITU has recommendations for worldwide TV whitespace technologies and approaches
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
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 client100mW master to 100mW client (40mW for both in the 1st adjacent channel) 50mW sensing only client to client
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
