Wireless broadband access technologies for rural and remote areas

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Wireless broadband access technologies for rural
and remote areas

• Gérald Chouinard
• CRC

Joint AHCIET-CITEL Broadband Wireless Access
Seminar, 20-21 Sept. 03
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Wireless broadband access technologies for rural
and remote areas
Outline

• Broadband capacity requirement
• Overall system concept
• Technologies
• Satellite
• Terrestrial wireless
• License-exempt bands
• Local Area Network (LAN) (Wi-Fi, Wi-Max)
• Extended LAN
• Rural Area Network (RAN)
• System requirements
• RF Spectrum
• Multimedia Broadcasting

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Wireless broadband access technologies for rural
and remote areas
Outline

• Broadband capacity requirement
• Overall system concept
• Technologies
• Satellite
• Terrestrial wireless
• License-exempt bands
• Local Area Network (LAN) (Wi-Fi, Wi-Max)
• Extended LAN
• Rural Area Network (RAN)
• System requirements
• RF Spectrum
• Multimedia Broadcasting

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Bandwidth requirements for selected
applications(Minimum and suitable required by
application)
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Broadband Access Capacity

• Capacity (Canadian Broadband Task Force, June
  2001)
• 1.5 Mbit/s two-way for households
• 10 Mbit/s two-way for institutions
• 1 Gbit/s for major institutions such as hospitals
• ADSL

• Cable

Always-on
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Wireless broadband access technologies for rural
and remote areas
Outline

• Broadband capacity requirement
• Overall system concept
• Technologies
• Satellite
• Terrestrial wireless
• License-exempt bands
• Local Area Network (LAN) (Wi-Fi, Wi-Max)
• Extended LAN
• Rural Area Network (RAN)
• System requirements
• RF Spectrum
• Multimedia Broadcasting

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(No Transcript)
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Broadband Access technologiesand their potential
applications

• Satellite
• Terrestrial
• Optical Fiber
• Cable
• ADSL
• Wireless

Conventional C and Ku technology for community
access, Ka-band technology for direct-to-home
access
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Ka-band earth terminalNew technology developments
Parabolic reflector
Dual focal point Reflectarray
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Broadband Access technologiesand their potential
applications

• Satellite
• Terrestrial
• Optical Fiber
• Cable
• ADSL
• Wireless

Conventional technology for community access,
Ka-band technology for direct-to-home access
High capacity trunking, transport, fiber to the
home in urban settings
Broadband piggy-backed on Cable-TV installations
where they exist in rural and remote areas.

Trend towards Micro-DSLAM and DSL repeaters to
reach farther and VDSL to increase capacity over
shorter distance.

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Rural Broadband
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Wireless broadband access technologies for rural
and remote areas
Outline

• Broadband capacity requirement
• Overall system concept
• Technologies
• Satellite
• Terrestrial wireless
• License-exempt bands
• Local Area Network (LAN) (Wi-Fi, Wi-Max)
• Extended LAN
• Rural Area Network (RAN)
• System requirements
• RF Spectrum
• Multimedia Broadcasting

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Capabilities of license-exempt bands systems (2.4
GHz, 5 GHz)
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Measured throughput 2.4 GHz
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Measured throughput 5 GHz
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Wireless broadband access technologies for rural
and remote areas
Outline

• Broadband capacity requirement
• Overall system concept
• Technologies
• Satellite
• Terrestrial wireless
• License-exempt bands
• Local Area Network (LAN) (Wi-Fi, Wi-Max)
• Extended LAN
• Rural Area Network (RAN)
• System requirements
• RF Spectrum
• Multimedia Broadcasting

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Rural Broadband
- Cable-modem / microDSLAM
- WiFi hot-spots
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(No Transcript)
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24 element rosette array
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Cognitive Hub radiosFirst Come-First Claim
etiquette EIRP rotation control
C/I (dB)
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Stacked patch array
Bottom layer
Top layer
20 cm
Fiberglas 0.2 mm thick 3.5 mm above bottom layer
Sheldahl, Comclad 1.5 mm thick
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Wireless broadband access technologies for rural
and remote areas
Outline

• Broadband capacity requirement
• Overall system concept
• Technologies
• Satellite
• Terrestrial wireless
• License-exempt bands
• Local Area Network (LAN) (Wi-Fi, Wi-Max)
• Extended LAN
• Rural Area Network (RAN)
• System requirements
• RF Spectrum
• Multimedia Broadcasting

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Rural Broadband
- Cable-modem / microDSLAM
- WiFi hot-spots
- Low/medium power ISM band systems
MAC Long excess delays
7 km
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IEEE Standards
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Wireless broadband access technologies for rural
and remote areas
Outline

• Broadband capacity requirement
• Overall system concept
• Technologies
• Satellite
• Terrestrial wireless
• License-exempt bands
• Local Area Network (LAN) (Wi-Fi, Wi-Max)
• Extended LAN
• Rural Area Network (RAN)
• System requirements
• RF Spectrum
• Multimedia Broadcasting

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Optimum frequency rangefor large area
Non-Line-of-sight Broadband Access
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Optimum frequency rangeExisting RF spectrum
usage
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Existing RF spectrum usageMain markets
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Wireless broadband access technologies for rural
and remote areas
Outline

• Broadband capacity requirement
• Overall system concept
• Technologies
• Satellite
• Terrestrial wireless
• License-exempt bands
• Local Area Network (LAN) (Wi-Fi, Wi-Max)
• Extended LAN
• Rural Area Network (RAN)
• System requirements
• RF Spectrum
• Multimedia Broadcasting

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DTV transmission forBroadband Wireless Access

• Large data capacity up to 20 Mbit/s per 6 MHz
  channel
• Large coverage typically 70 km radius
• Frequency agile VHF-UHF operation
• Non-LOS robust to multipath and to interference
• Low cost consumers products (ATSC, DVB-T, ISDB-T)

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Low cost equipment(US 100 US 10/month)
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Predicted coverage Ottawa area
60 km
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DTV Datacasting block diagram
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Conclusions

• Satellite - for connection to rural communities
  C- and Ku-band - for direct-to-home
  Ka-band
• Terrestrial wireless Rural Are Network (RAN)
  standard
• for Non-LOS below 1GHz (lt40 km)
• DTV Broadcasting for large coverage areas (70
  km) need to develop return channel

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Thank you!
www.crc.ca/broadband