1. Seminar on
WMAN Network Architecture
Presenting by,
Karunakara g s

2. contents
• Introduction
• Typical WiMAX network architecture
• WiMAX network components
• Features of WiMAX
• WiMAX mobility support
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3. Introduction
• It is a separate radio system designed to
supplement existing broadband internet
system
• WMAN is an outdoor, point-to-point wireless
LAN that can provide coverage to a
city, campus, or suburban areas
• Subscribers to WiMAX use either a wired LAN
or Wi-Fi for communication
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4. Typical WiMAX network architecture
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6. WiMAX network components
there are mainly 3 components
• WiMAX base station:
It is the tower with large coverage area of 6 miles
radius from it.
It is also called as Access service network(ASN)
WiMAX would use MAC layer defined in standard
for communication
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7. WiMAX network components
• WiMAX receiver
It may have a separate antenna or an interface
card sitting on a device
It is also referred as customer premise equipment
(CPE).
BS-sectored/directional or Omni directional
fixed SS-directional
mobile SS- Omni directional
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8. WiMAX network components
• Backhaul
It refers to the connection from access point to
the BS and BS to the core network.
WiMAX tower may be directly connected to
internet or may be connected through another
WiMAX tower.
By using high speed microwave backhaul links it
would allow roaming as in cell phones.
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9. Features of WiMAX
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10. Features of WiMAX
• Flexible architecture:
 Supports several s/m architectures like P2P,
P2MP, and ubiquitous coverage.
• High security:
 Supports Advanced Encryption Standard(AES)
And Triple Data Encryption Standard(TDES)
• WiMAX QoS:
 It can be dynamically optimised for the mix of
traffic that is being carried
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11. Features of WiMAX
• Quick deployment
Unlike wired solutions needs very less time to
provide access to end users in hours
• Multilevel service
 Service will b as per the agreement between
service provider and end user. Service can be
same or different for users in the same SS
• Interoperability
WiMAX is based on international, vendor neutral
standards can be used at different locations and
with different SPs
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12. Features of WiMAX
• Portability
Once the SS is powered up, characterises itself
with BS and communicates accordingly
• Mobility
 Improvements made in OFDM PHY layers to support
devices and services in mobile environment
• Cost-effective
as it is open and adopted international standard
enables mass production of chipsets
• Wider coverage
Equipped with high power amplifier even in
low level modulation it covers a large area
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13. Features of WiMAX
• NLOS operation
WiMAX is based on OFDM technology which has
inherent capability of handling NLOS
environments and offers broad bandwidth
• High capacity
Using higher modulation(64 QAM) and higher
channel bandwidth can provide seam less service
for end users
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14. WiMAX mobility support
• WiMAX, IEEE 802.16e-2005 envisions 4
mobility related usage scenarios
Nomadic
Portable
Simple mobility-60 km/h
Full mobility-120 km/h
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