|
802.16 |
Aimed to prepare formal specifications for the global deployment of broadband Wireless Networks. Also known as WiMax. Covers the frequency range from 10 – 66 GHz. LOS operations only
|
December 2001 |
|
802.16a |
Uses frequency range (2GHz - 11 GHz). NLOS operations are possible. (NLOS was not possible in 802.16).
|
January 2003 |
|
802.16b |
Uses frequency range from 5GHz-6GHz and provides real time video and voice with high QoS (Quality of Service).
|
March 2003 |
|
802.16c |
Uses frequency range from 10-66GHz. Provides consistent implementation and hence facilitates interoperability. Line of Sight (LOS) service.
|
December 2002 |
|
802.16d – ( Now called as 802.16 -2004) |
Uses frequency range (2GHz – 11GHz).Minor fixes to 802.16a and also compliance testing of various devices NLOS operations are possible. |
June 2004 |
|
802.16e
|
Uses frequency range (2GHz – 6GHz). NLOS operations possible. This is the Mobile WiMax and considered to be the ultimate goal of WiMax. |
December 2005 |
Thanks kevin. thanks for clarifying my doubt.sankar
On 3/5/06, Richard <[EMAIL PROTECTED] > wrote:The Harris product looks interesting:
http://www.govcomm.harris.com/secure-comm/
Other examples of "tweeking the standard" help you realize that a standard is standard because when you buy the 802.11(x) card/router you expect it to work with the others that you already have. Consequently compatability is more important than propriatary add-ons.
http://www.sysopt.com/features/network/article.php/12029_3572716_3
Now, I want to have my motorhome use a "high gain" antenna to capture weak WiFi signals and then repeat them to WiFi laptops around the motorhome. What's the way to implement that?
Richard
(N6GPP)On 3/5/06, kevincw01 < [EMAIL PROTECTED]> wrote:
I wouldn't think there would be proprietary technologies when you're
dealing with 2 standards. Now, some manufacturers will overlay an
authentication or encryption scheme over the top of wifi/wifmax or they
may take the standard and "tweak" it slightly and sell it as
proprietary.
One that comes to mind is "SecNet 11" by Harris. They are marketing a
wireless network link that is based upon the 802.11 standard but they
moved the frequency from 2.4ghz to 8 or 9ghz and laid a proprietary
encryption scheme at layer3/4. I don't know of anyone who's purchased
it yet but the goal is to allow for classifed data transfer over
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