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Fixed WiMAX - IEEE 802.16-2004
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|
Fixed WiMAX is defined in the 802.16-2004
version of the IEEE 802.16 standard. WiMAX
uses Orthogonal Frequency Division
Multiplexing Access (OFDMA) and supports
fixed and mobile access in line of sight
(LOS) and non line of sight (NLOS)
environments.
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Mobile WiMAX - IEEE 802.16e
|
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Mobile WiMAX is based on IEEE 802.16e air
interface and is optimized for dynamic
mobile radio channels. 802.16e is an
amendment of the IEEE 802.16-2004 standard.
This amendment supports handover and
roaming and uses Scalable Orthogonal
Frequency Division Multiplexing Access
(SOFDMA).
Service providers offering 802.16e can also
use their network to provide fixed services.
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Applications for 802.16-2004 and 802.16e WiMAX
networks
|
WiMAX is a broadband wireless technology supporting
fixed, nomadic, portable and mobile access. In order
to meet the requirements of these four
different access types, two versions of WiMAX have
been defined. The first is based on the IEEE
802.16-2004 standard and is optimized for fixed and
nomadic access. The second one, based on the IEEE
802.16e, is an amendment to the 802.16-2004 and
supports portability and mobility.
|
|
Definition
|
Device
|
Locations / Speed
|
Handover
|
802.16-2004
|
802.16e
|
Fixed access
|
Outdoor and
indoor CPEs
|
Single /
stationary
|
No
|
yes
|
yes
|
Nomadic
access
|
Indoor CPEs
amd PCMCIA cards
|
Multiple /
stationary
|
No
|
yes
|
yes
|
Portability
|
Notebooks
(PCMCIA or mini cards)
|
Multiple /
walking speed
|
Hard
|
no
|
yes
|
Simple
mobility
|
Notebooks,
PDAs or smartphones
|
Multiple /
low vehicular speed
|
Hard
|
no
|
yes
|
Full mobility
|
Notebooks,
PDAs or smartphones |
Multiple /
high vehicular speed |
Soft
|
no
|
yes
|
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WiMAX Forum certification profiles
|
The WiMAX Forum™ is an industry-led, non-profit
corporation formed to promote and certify the
compatibility and interoperability of Broadband
Wireless Access (BWA) products using the IEEE 802.16
and ETSI HiperMAN wireless MAN specifications. Some
certification profiles developed by the members of
the WiMAX Forum are listed below.
|
Frequency
|
Duplexing
|
Channel bandwidth
|
IEEE standard
|
3400 - 3600
MHz
|
TDD
|
3.5 MHz
|
802.16-2004
|
3400 - 3600
MHz
|
FDD
|
3.5MHz
|
802.16-2004 |
3400 - 3600
MHz
|
TDD
|
7.0 MHz
|
802.16-2004 |
3400 - 3600
MHz
|
FDD
|
7.0 MHz
|
802.16-2004 |
5725 - 5850
MHz
|
TDD
|
10.0 MHz
|
802.16-2004 |
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