Time for TD-LTE……

June 29, 2010

Ever since the International Telecommunication Union created its IMT-2000 family of 3G technologies ten years ago, 3G has come in two basic forms: FDD and TDD. FDD offered separate spectrum bands for uplink and downlink traffic, while TDD offered upstream and downstream
traffic on the same band. But while FDD-based technologies like W-CDMA and CDMA2000 dominated 3G rollouts (the former more so than the latter), TDD-based TD-CDMA
remained generally unloved except by vendor IPWireless and its small customer
base, while the other TDD option, TD-SCDMA, was China’s homegrown technology that most industry players regarded as a China-only technology with no realistic chance of ever seeing
deployment outside of China, although Taiwanese operators FarEasTone and Vibo Telecom began small-scale trials of TD-SCDMA late last year.

“People are assuming a lot of market synergies around TD-LTE that actually don’t exist,” he says. “It’s complicated, but you’ve got LTE development going on for FDD and TDD, then there’s all this band fragmentation with 4G, because you’ve got 2.6 GHz, refarming in the 3G bands plus backward compatibility, and digital dividend spectrum coming up,” he says. “And in some markets like the US, you’ll need multi-mode support for EV-DO in all that, and in China, TDLTE
chips will be TD-LTE/TD-SCDMA chips. Software-defined radios help and bigger RF front ends help, but you’ll still see a lot of fragmentation that applies to TD-LTE.” l

– Quotation from Phillip Solis , practice director at ABI Research…2010.

I like to conclude that regarding the evolution of LTE , we in Malaysia is moving towards 3G network to LTE , LTE-Advance and TD-LTE in the next 3 to 4 years…Telecommunication operators such as Digi , Maxis , Celcom and U-Mobile had sign an agreement with the Malaysian Goverment to provide these services….Hope that we are going to see the 2.6GHz band spectrum in next few years…till then….bye…

By : Khairul Azrin B. Azman.


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