Comments on: WiMAX wins ITU backing as IMT-2000 tech http://blog.telecoms.com/2007/10/19/wimax-wins-itu-backing-as-imt-2000-tech/ Telecoms industry news and opinion Fri, 09 Jan 2009 01:47:05 +0000 http://wordpress.org/?v=2.0.12-alpha by: Darren Fawcett http://blog.telecoms.com/2007/10/19/wimax-wins-itu-backing-as-imt-2000-tech/#comment-82 Tue, 23 Oct 2007 14:31:23 +0000 http://blog.telecoms.com/2007/10/19/wimax-wins-itu-backing-as-imt-2000-tech/#comment-82 This is a great step for WiMAX. By winning ITU backing for IMT-2000 it opens the door for operators to deploy WiMAX in the existing IMT-2000 spectrum, spectrum that was previously out of bounds. This also sets the precedent for the soon to be decided IMT-Advanced spectrum allocation. This is a great step for WiMAX. By winning ITU backing for IMT-2000 it opens the door for operators to deploy WiMAX in the existing IMT-2000 spectrum, spectrum that was previously out of bounds. This also sets the precedent for the soon to be decided IMT-Advanced spectrum allocation.

]]> by: Peter http://blog.telecoms.com/2007/10/19/wimax-wins-itu-backing-as-imt-2000-tech/#comment-72 Fri, 19 Oct 2007 14:29:25 +0000 http://blog.telecoms.com/2007/10/19/wimax-wins-itu-backing-as-imt-2000-tech/#comment-72 Hi, I am just writing to comment on your article posted today. Is it true that WiMAX has been approved as a 3G standard? Or is it more correct to say that it is "OFDMA TDD WMAN" that is now approved as an IMT-2000 technology. OFDMA TDD WMAN is NOT the IEEE 802.16e specifications and it is NOT the WiMAX Forum profiles. What has actually been approved as an IMT-2000 technology is a selected version out of the IEEE 802.16e and WiMAX overall specifications and profiles with details such as carrier sizes of 5 MHz and 10 MHz only (i.e. no 20MHz so limited data bandwidth capabilities), and with TDD technology only (no FDD support is included, unlike WiMAX). It also has certain maximum power limits that are not defined in WiMAX Forum. Additionally it is specified for the 2500-2690 MHz frequency band only, whereas other IMT2000 technologies are specified for alternate frequency bands in addition to 2500-2690. I would expect existing WiMAX vendors to now have to clarify how and when their products shall be certified to conform to the "OFDMA TDD WMAN" specifications Regards, ...Peter Hi,
I am just writing to comment on your article posted today.

Is it true that WiMAX has been approved as a 3G standard? Or is it more correct to say that it is “OFDMA TDD WMAN” that is now approved as an IMT-2000 technology.

OFDMA TDD WMAN is NOT the IEEE 802.16e specifications and it is NOT the WiMAX Forum profiles. What has actually been approved as an IMT-2000 technology is a selected version out of the IEEE 802.16e and WiMAX overall specifications and profiles with details such as carrier sizes of 5 MHz and 10 MHz only (i.e. no 20MHz so limited data bandwidth capabilities), and with TDD technology only (no FDD support is included, unlike WiMAX). It also has certain maximum power limits that are not defined in WiMAX Forum. Additionally it is specified for the 2500-2690 MHz frequency band only, whereas other IMT2000 technologies are specified for alternate frequency bands in addition to 2500-2690.

I would expect existing WiMAX vendors to now have to clarify how and when their products shall be certified to conform to the “OFDMA TDD WMAN” specifications

Regards,

…Peter

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