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How Real Is The Converged LTE Promise For India?

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Informal conversations with the telcos and other ecosystem players suggest that the country might be going in for the convergence of both variants of LTE—TDD and FDD. Post the auction of 2300 MHz spectrum it had been a given that India would adopt the TDD version of the technology. However, this is no longer the case. Post the recent auctions in the 1800 MHz spectrum bands, there is a strong movement towards adoption of FDD and consequently a convergence of TDD and FDD in the country.

“It is expected that the band [1800 MHz] would enable new 4G operators to offer voice and enhanced data services and this has enabled the need for LTE TDD and FDD convergence in India. Convergence of TDD and FDD may be viewed in two parts, the ability to use the two bands to complement their use for better coverage and capacity utilization and the ability to aggregate the spectrum in both the bands in order to use them together to enable much higher throughputs,” said Amit Marwah, Chief Technology Officer, Nokia Solutions and Networks.

While TDD has a strong push from the Indian and Chinese telcos, the larger ecosystem is clearly in favor of FDD. There is a global push for the telcos to converge the two technologies. For instance, China Mobile has attempted to use both the variants of the technology. In the US, ClearWire and Sprint are believed to be collaborating to offer a converged network to their subscribers.

So the convergence would be good news for subscribers who would be able to use interoperable devices on the network.

SK Telecom recently demonstrated the world’s first TDD-FDD carrier aggregation together with NSN and Korea Telecom. This demonstration has set a new benchmark for improved network capacity, coverage and speed. The breakthrough move from pure TD-LTE to LTE FDD-TDD convergence and carrier aggregation would be a book for Indian telcos and their LTE mobile broadband subscribers,” said Berge Ayvazian, Industry Analyst, Conference Chair and Senior Editor, UBM Tech in his recently published column on Light Reading India. (See: 4G World Series: SKT Styled Aggregation Can Boost India’s LTE.) With the acquisition of the 1800 MHz spectrum in 14 circles in the recently concluded auction, Reliance Jio is also likely to adopt a convergence strategy. Having the two frequency bands—1800 MHz and 2300 MHz—means that the company can deploy FDD for coverage and leverage TDD for additional capacity in high traffic zones. Original post at Light Reading India

Wahengbam Rorrkychand

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Website: http://www.blog.tonsetelecom.com

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