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4G/3G/WiFi

WiMax's Long-Term Evolution

7:00 AM -- It certainly doesn't seem impossible that WiMax could one day end up as a subset of Long-Term Evolution (LTE) wireless technology. Both are already based on the same underlying radio technology, and there has already been some talk of standardization.

I spent some time yesterday chatting to Eran Eshed, co-founder and VP of marketing and business development at Altair Semiconductor, and he suggests that this way it would be best for WiMax to go:

"I think that's WiMax's best chance, to harmonize with LTE, to become the TDD profile of LTE," Eshed says.

TDD (time division duplex) systems, in case you've forgotten, send and receive information in the same band at different times, as opposed to FDD (frequency division duplex) systems, which use paired bands to send and receive data. TDD systems are generally considered more useful, especially in spectrum-constrained environments, because they typically use less bandwidth than FDD systems.

What say you, readers? Will WiMax merely be subsumed by LTE in years to come?

— Dan Jones, Site Editor, Unstrung

lrmobile_Ziggy 12/5/2012 | 3:36:30 PM
re: WiMax's Long-Term Evolution Although it would be great news overall if everyone finally agreed to a single global standard, I think there is way too much at stake for the big vendors to settle.

Furthermore, 802.16 already supports FDD (although the WiMAX Forum still has to define a profile for it), and LTE is being developed with both FDD and TDD modes (though FDD is expected to be the main market).
SAlhurdi 12/5/2012 | 3:36:26 PM
re: WiMax's Long-Term Evolution The main idea behind harmonizing WiMAX under LTE is to extinguish all fears among carriers that WiMAX could be a "disruptive" model. Precisely what most WiMAX proponent hope it is. The GSM/3G/LTE armada is a trillion dollar machine, with which the WiMAX guerrilla has no interest in collaborating.
lrmobile_Ziggy 12/5/2012 | 3:36:25 PM
re: WiMax's Long-Term Evolution Has the WiMAX Forum officially released the FDD profile (Release 1.5)? It is not yet available on the website.
El Rupester 12/5/2012 | 3:36:25 PM
re: WiMax's Long-Term Evolution Agree with Ziggy.

It might make sense but the politics and emotions make it very unlikely.

LTE is nearly standardized, so why do it now?

This idea seems to rely on some assumption that "WiMAX is TDD only; LTE is FDD only so there is cooperation". But that is wholly untrue. WiMAX does have both FDD and TDD profiles (Release 1.5). And LTE TDD is driven by China: this is when TD-SCDMA beccomes a success on world stage and China IPR is worth having.

So who would drive for compromosie and harmonisation? I can't see it...
IPobserver 12/5/2012 | 3:36:24 PM
re: WiMax's Long-Term Evolution The way I understood it <<exposes glaring="" ignorance="" tech="">> is that the frame structure, scheduling, and uplink, are all different, making it impossible (practically speaking) to align the two.

ItGÇÖs important to have a common framing so the same chipset can be used in both TDD & FDD modes. ThatGÇÖs why the decision in China late last year to go to GÇ£TD-LTEGÇ¥ is so important.
</exposes>
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