yakhoob(wimax and broadband)
TRANSCRIPT
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Introduction to Wi-Max and Broadband AccessTechnologies
Presented at APRICOT 2006
On 27 February 2006
At Perth, Australia
By M. Farhad Hussein
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What is WiMax? WiMax (Worldwide Interoperability for
Microwave Access) is a standards-based
technology enabling the delivery of lastmile wireless broadband access as analternative to cable and DSL.
The technology is specified by the Instituteof Electrical and Electronics Engineers Inc.,as the IEEE 802.16 standard.
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WiMax Technology WiMAX is expected to provide fixed , nomadic, portable
and, eventually, mobile wireless broadbandconnectivity without the need for direct line-of-sight(LOS) with a base station.
In a typical cell radius deployment of three to tenkilometers, WiMAX Forum Certified systems can beexpected to deliver capacity of up to 40 Mbps per
channel, for fixed and portable access applications. Mobile network deployments are expected to provide
up to 15 Mbps of capacity within a typical cell radiusdeployment of up to three kilometers.
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Wi-Fi StandardsStandard Throughput Range Frequency
802.11a Up to 54 Mbps Up to 300 ft Between 5and 6 Ghz
802.11b Up to 11 Mbps Up to 300 ft 2.4 Ghz
802.11g Up to 54 Mbps Up to 300 ft 2.4 Ghz
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WiMax Standards802.16 802.16a 802.16-
2004802.16e-2005
DateCompleted December2001 January2003 June2004 December2005
Spectrum 10-66 GHz < 11 GHz < 11 GHz < 6 GHz
Operation LOS Non-LOS Non-LOS Non-LOS andMobile
Bit Rate 32-134 Mbps Up to 75Mbps
Up to 75Mbps
Up to 15Mbps
Cell Radius 1-3 miles 3-5 miles 3-5 miles 1-3 miles
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WiMax is well suited to offer
both fixed and mobile access
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How WiMax Works WiMax can provide 2 forms of wireless service:
- Non-LOS, Wi-Fi sort of service, where a small antenna ona computer connects to the tower. Uses lower frequency
range (2 to 11 GHz).- LOS, where a fixed antenna points straight at the WiMaxtower from a rooftop or pole. The LOS connection isstronger and more stable, so it is able to send a lot of datawith fewer errors. Uses higher frequencies, with ranges
reaching a possible 66 GHz. Through stronger LOS antennas, WiMax transmitting
stations would send data to WiMax enabled computers orrouters set up within 30 (3,600 square miles of coverage)
mile radius.
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WiMax Rollout WiMax Forum anticipates rollout of its
technology in 3 phases:
- Phase 1: Fixed Location, Private LineServices, Hot Spot Backhaul.
- Phase 2: Broadband WirelessAccess/Wireless DSL
- Phase 3: Mobile/Nomadic Users.
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Wireless Device Continuum Highest speed processor Larger display
Processor optimized for low powerconsumption & small form factor
Nomadic SmartPhoneHandheldTabletPortable CellPhone
802.11 & 802.16 3G
PrimaryCapability
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WiMax Applications According to WiMax Forum it supports
5 classes of applications:
1. Multi-player Interactive Gaming.
2. VOIP and Video Conference
3. Streaming Media
4. Web Browsing and Instant Messaging
5. Media Content Downloads
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Application Classes
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WiMax Success Factors It is crucial that WiMax becomes an important
building block to enable fixed/mobile convergenceand to ensure its success.
Ability to offer ease of use is crucial to the successof WiMAX service providers
Success of WiMAX may depend on the ability to
combine fixed and mobile access over the sameinfrastructure.
THANK YOU.