Transcript 6. TVWS_Introduction_Seminar Indonesia Sim Gim Kerk

TV White Space
Communications Technology
See Gim Kerk
Director of Engineering
[email protected]
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TVWS Technology
March 2009
What is TV White space ?
 As a start, TV frequency channels refers to the spectrum
for television broadcast radio spectrum from 4 contiguous
blocks of a total of 418 Mhz



Ch 2 – 6 :54-72 Mhz, 76-88 Mhz (λ= 6 meters)

Ch 7-13: 174- 216 Mhz, Ch 14-20: 470-512 Mhz

Ch 21 -36: 512-608 Mhz, Ch 37-51: 608-698 Mhz (λ= 60 cm)

Ch 52-69: 698-806 Mhz (relocated as 700 Mhz )
Analog
TV TV (NTSC
Analog
The term “TV white space” relates to the same parts of,
March 2009
sg-whitespace-09/0048r5
which in a given location or any
given time remains
unused for broadcast television. This happens
when
Analog
TVTV
(NTSC) Spectrum
channels are now broadcasted via cable or fiber networks
• Power primarily confined to Video and Audio carr
leaving them un-used or simply under-utilised. The
• Distinctive double peaked spectrum makes identifi
• Relatively high narrowband power levels compare
reduced required for separation distances are offering
new opportunities for TVWS
Singapore is the only country other USA which allow “free
to use” TV Whitespace. This open up huge opportunities
Submission
Slide 13
for players to utilise them for smartgrid, remote monitoring
and control and surveillance purposes. The rest that are
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testing for approval are UK, Canada and France
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• Power primarily confined to Video and Audio carriers
March 2009
Frequency
utilisation in USA
sg-whitespace-09/0048r5
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What is TV Whitespace
sg-whitespace-09-0055-00-0000
What is TV Whitespace?
White
space
(Test conducted in the rural sector west of Ottawa, Canada)*
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*- C. R. Stevenson, G. Chouinard, W. Caldwell,Tutorial on the P802.22.2 PAR for :“Recommended
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Practice for the Installation and Deployment of IEEE 802.22 Systems,” IEEE802, San Diego, CA, 7/17/06
http://grouper.ieee.org/groups/802/802_tutorials/july06/Rec-Practice_802.22_Tutorial.ppt
Current Status on the adoption of TV Whitespace

US has approved the use of TVWS and has allocated huge amount of investments into TVWS
 US$7.2 billion of American Recovery & Reinvestment Act (ARRA)
 US$4.7 billion by NTIA BTOP (Broadband Technology Opportunity Program)
 US$2.5 billion added to Dept of Agriculture’s RUS (Rural Utilities Service) program

 Call to Action by US Broadband Coalition to develop a National Broadband Strategy
Some countries are also testing TVWS via trial deployments
 Canada, UK, France, Singapore, Taiwan, Philippines and Malaysia and I was made to know today,
Indonesia is next.
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TVWS Technology

What are the issues with using TVWS devices ?
An issue with using white spaces in this manner is how to ensure that the
white space broadcasting devices (TVBDs) operate only in the
unoccupied frequencies or channels and within the limits imposed on the
transmission parameters. If they fail to do so, interference may be caused
to licensed users in the host countries and the neighbouring countries. To
prevent this, it is necessary for the TVBDs to:
a) determine the presence of a licensed user (TV signal); and
b) transmit at a power level that will not cause interference to
licensed services.
 We had developed the technology to use the empty slots and perform
such “data slotting” without affecting the primary user
 We have completed the prototyping and ready for testing
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CASE STUDY – Singapore – Frequencies are
SCARCE
Spectrum allocation ~100% Spectrum utilization ~6.5% meaning
that most of the time, its free
Unused spectrum exists from …
time to time, & location to location
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But this is not all! – a large chunk is block off for
our neighbours – lets start with them
Indonesia TVR1
TV Channels
Used in SG
Malaysia TV2
Regional Coordination
DAB Channels
Used in SG
Wireless MIC
Channels Used in SG
To avoid interference in TV spectrum with Malaysia and
Indonesia, Singapore virtually loses 2/3 of the spectrum
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and for indonesia, 1/3 for places nearer to Singapore.
Solutions?
 Spectrum is wasted!
 Cognitive radio (CR) is a
potential solution
Cognitive Radio
Car Driving
Frequency spectrum
Road
Frequency band
Lane
CR device
Car
Opportunistically
use spectrum
when it is idle
Without Cognitive Radio
Requires sensing
of available
spectrum
When applied on TV
bands, it is called
TV White Space
(TVWS)
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With Cognitive Radio
Long Range Non LOS Trial
1.0 km
2.2 km
3.3 km
Managed to achieve range > 3km
in NLOS high-rise environment
Height of antenna – 32 m , Power – 4 W
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Data Rates & Range Tradeoff
Data Rates vs Range
10000
Data Rates (kbps)
0.8, 5000
1, 2500
1000
2, 500
3, 200
100
5, 50
10
10, 10
1
0
2
4
6
8
10
12
Range (km)
• Based on path loss exponent of 2.5
• Transmission power of 4 W
• Carrier frequency of 700 MHz, can be varied and “jumped” to any unused
channels and for the trial we are planning on 1.5 Mbps
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Current TVWS developments in
Singapore
One of our applications
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Substation/Smart Metering and security
Monitoring
 SP Powergrid Asset Monitoring
 Substation Security Management
 Intrusion Detection/Alarm and Last Gasp
Image
 Smart Metering where every meter can be a
WIFI hotspot
 Smart Home payment services
 Power Status for EV and DG/ Substation
Group/Grid Wide Information
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Smart Home/Smart Grid Applications
Direct links to energy pool
Using incentives of energy
exchange, energy supply
companies and network operators
Home Apartment
Iphone App to manage
Smart Meter gateway
Management of
distributed generation
(Virtual Power Plant)
Energy
Markets
Distributed Intelligence
Balance home
loads
Prepaid or post paid with other meters if possible
with online information
about MV and LV grids
(Smart Grid)
Home Display Units
Value-Added Services
• Information about actual energy consumption
• Information about price signal
• Load management, ….
Bi-directional communication for technical and
commercial data (e.g. meter data, measured
values, commands...)
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Some Current Deployments in Singapore
NUS Utown TVWS Metering Trial
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TV White Space (TVWS) Trial @ NUS
Tentative
• No. of concentrators:
2 to 4
• No. of meters:
up to 3000
• Frequency: UHF bands
• Range: 700-1000m
• Power:
• 100 mW (last mile)
• Speed to double
if we set at 500
mW as approved
• Up to 1 Watt (infra)
• Data rates:
~5 Mbps
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(aggregated raw rate)
Gardens By the Bay –
TVWS/Super WIFI Broadband
conectivity for public users to be
completed by June 2013
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Gardens by the Bay - WAN
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SuperWIFI for Internet Connectivity and Survellience
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Proof of Concept – Video conferencing
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Smart City – Punggol Town
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Smart City Deployment – HDB Punggol Town
Vision
•to use TVWS is to breach longer distances to
provide Secure Private wireless connectivity –
Lower costs
Type of M2M Applications and devices
•Energy Metering using Power meters installed at
HDB switchrooms
•Rooftop and illegal Carpark/Activities using Video
cameras and encorders
•Environment Management - Temperature sensors
•Condition Monitoring/Smart Maintenance of
equipment - Lift Monitoring/Rubbish Management
•Metering of PV panels
•Lighting on/off/dimming control
•Streetlight control
Separately, Singapore Police Force:
•Void Deck surveillance
•Mobile Surveillance where every mobile car and
person is a WIFI hotspot
Town Specs: 5 sq km town
100 blocks
2000 households
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Backhaul Topology- from backhaul to
Neighborhood Network (NN)
Cloud Server
PA TVWS
Conc
HDB WIFI/Mesh
Network
TVWS End
node
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In City Deployments
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TVWS to BPL/WIFI Deployment Network
TVWS
relay
TVWS
Direct
TVWS to
BPL
TVWS
relay
TVWS can be deployed in different
scenarios and note that at the end we
need to put as ethernet or WIFI for users
to connect:•TVWS Direct to Households – when
possible
•TVWS to BPL
•TVWS to 2.4 Ghz WIFI
•TVWS to BPL and BPL to 2.4 Ghz WIFI
We can also extend
WIFI using WIFI
extender
TVWS to
WIFI
carpark
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Sentosa island Wide Wireless
Surveillance and WIFI
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Sentosa island wireless surveillance and WiFi
coverage plan
Optional Extension
Palawan Beach Coverage
HQ-to-Merlion Link
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Proposed Super-WiFi Pilots
Optional Extension
Palawan Beach Coverage
HQ-to-Merlion Link
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Shell Bukom – Permitting and
Wireless Fencing
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Permitting for Shell Bukom
TVWS Relay Station
1.5 km
2 km
TVWS Base Station
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Jul-16
Wireless Alarming
 Location by GPS+TVWS end alarms – IP alarms
 Once installed, clustering and zoning by backend settings
 Logic of alarm from timing control, frequency of alarms
and triggers
 Suitable for smoke alarms, emergency, heat and even
movement on certain timings
 Alarms broadcast after trigger can be general or specific
to groups
 Remote control/cancellation
 Integrate to video feed
 Enforcement needs
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Page 32
Jul-16
PSA – Port and Offshore
Connectivity
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Over the Waters
Police Coast Guard Border Connectivity Plan
4 km
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Types of TVWS Applications
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TVWS equipment
Small , Low
Power (4 W) and
easy to deploy
providing >5 km
radius in
coverage for
SuperWifi
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Page 36
Comparisons between 3G/GPRS to TV
White Space
Factors
3G HSPA
TVWS
53.90
0
4.8 (DL), 1.3 (UL)2
13.5
0.6
1.5
Max number of simultaneous connections
(assume 100 kbps for Smartgrid
applications like load shedding)
6
18
Number of simultaneous 5 MHz
frequency channels (max)
1
103
600
6000
Price ($/month)
Max. speed1 (Mbps)
Max speed at cell edge (Mbps)
Max number of meters/devices per
Access point at one location
Notes:
Singtel: http://home.singtel.com/bbmobile/
2Uplink (UL) speed is estimated based on downlink speed. Average trueput from 3G 7.2 Mbps are really not
achievable and really less than 300 kbps at most situations . GPRS is only 80 kbps at best.
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3Based on IDA’s current TVWS guideline
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4The actual numbers should be higher as it is unlikely that all devices will be at cell edge
1Based on
Current TVWS developments in
Philippines
Bohol Philppines for rural internet connectivity
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Bohol Philippines
TVWS/Super WIFI Broadband
connectivity for Schools in Bohol
Philippines
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Why TVWS for Philippines
Consideration
Less than 10% of the total population have internet connectivity
Less than 5% of schools have internet access, estimated 120,000
schools have no access to internet
It has been known that internet connectivity encourages trade,
promotes education and social mobility of the population
It is the considered the world’s top 10 invention that create huge
impact to the population by “discovery channel” panel of judges for the
last century. Ranked among the greatest such as the invention of flight
and the motor car.
 It is available and inexpensive…. To most of us here, yet it is not
being rollout… Why ?? – Cost of Infrastructure … we say fibre, VSAT,
Cell Towers… Most importantly … Funding !!
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TVWS Trial for Bohol Philippines
 Department of Science and Technology (DOST) Philippines
spearhead the charge and work with us to provide connectivity to the
island of Bohol.
 It will include providing low cost WiFi connection to 120 schools,
improve security surveillance and connectivity to small govt agency
outposts
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TVWS Performance
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Schematic
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Linking Schools and Hospitals in Tubigon, Bohol
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Emergency Connectivity for Rescue Support for recent
earthquake in Bohol
Internet Connectivity @ DSWD
Thru WiFi via TVWS
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Skype Video Call W/
Congressman Power
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Providing Connectivity to Rescue Centres
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Current TVWS developments in
Taiwan
Taoyuan County for mountain village internet Connectivity
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Overview of deployment
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Why TVWS for Taiwan

The signal of terrestrial TV is poor in rural area

The medical resource is deficient in rural area
since its nature of the terrain - The wireless
coverage is poor in rural area, and the medical car
can’t collect electrical anamnesis from each
hospital easily
Reduce digital gap in rural area by improving the
coverage wireless internet access
 Full outdoor wireless network coverage
 Function: free outdoor WiFi for inhabitants and
tourists
 Target: covering all area in tribe,
10Mbps/village
 Promote trade and growth for the villages
 connectivity for disaster recovery
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Page 49
TVWS Performance
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Conclusions
TVWS has range and penetration benefits compared to
other technologies
TVWS is moving from concept to commercialization
Various aspects such as regulations, technologies,
applications, end users are in place
TVWS is gaining momentum worldwide
We are looking forward to more innovative use of TVWS
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Q&A
See Gim Kerk
Director of Engineering
[email protected]
[email protected]
+65 9687 4908
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