Posts tagged ‘Japan’

Interview: Lead Core Network Architect, Core Network Development Department, NTT Docomo: “The IoT will bring promising business opportunities.”

Itsuma Tanaka, Lead Core Network Architect, Core Network Development Department, NTT Docomo

Itsuma Tanaka, Lead Core Network Architect, Core Network Development Department, NTT Docomo

Itsuma Tanaka, Lead Core Network Architect, Core Network Development Department, NTT Docomo is speaking on the subject of “5G Infrastructure”, on Day One of the 9th annual LTE Asia conference, taking place on the 23rd-25th September 2014 at the Marina Bay Sands, Singapore. Here we get insight into his views on 5G, the IoT, and LTE roaming.

What, in your opinion, will truly define 5G?

5G is the search for a new paradigm; one that will support society for another 20 years. Therefore, 5G will be defined by the new business architecture on top of technical advancements to maximize the potential of mobile radio communication.

Will 5G require an overhaul of current network architectures, or will it be an evolution?

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Executive adviser, KDDI, Japan: “KDDI considers Hetnets to be one of the key technologies required to efficiently utilise limited spectrum resources.”

Fumio Watanabe, executive adviser, KDDI & corporate officer CTO, UQ Communications, Japan

Fumio Watanabe, executive adviser, KDDI & corporate officer CTO, UQ Communications, Japan

Fumio Watanabe, executive adviser, KDDI & corporate officer CTO, UQ Communications, Japan is delivering the opening keynote on Day One of the LTE Asia conference, taking place on the 18th-19th September 2013 at the Suntec, Singapore. Ahead of the show we get an insight into what makes KDDI special compared to its rivals.

How has your LTE network developed over the past year?

Unlike the usual approach of launching services with limited coverage, KDDI adopted a far more aggressive strategy when it launched LTE services in September 2012. KDDI aimed to solicit the advantages of LTE by starting with a wide nationwide coverage on Day One and by rolling out the network at a faster pace than had ever been achieved elsewhere. Eight months after the service launched, the population coverage using the 800MHz band reached 97 per cent as of May 2013 and will be further expanded to 99 per cent by the end of FY2013 (Total 3G/LTE subscriptions: 38.6 million as of July 2013 ).

KDDI’s approach to deploying LTE is not a mere implementation of LTE, but is truly unique and ambitious. By introducing LTE in multiple bands (800MHz, 1.5GHz and 2.1GHz) at the initial launch, we have secured the capacity and coverage as well as compatibility with global handsets, while saving the cost associated with network deployment.

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Interview: Director, radio access network development, NTT Docomo: “Improvements in backhaul will be essential to meet the increasing requirements of the market in the future.”

Takehiro Nakamura, director of radio access network development for NTT Docomo

Takehiro Nakamura, director of radio access network development for NTT Docomo

Takehiro Nakamura, director of radio access network development for NTT Docomo, Japan is speaking in ‘The Future of LTE’ track on Day Two of the LTE World Summit, the premier 4G event for the telecoms industry, taking place on the 24th-26th June 2013, at the Amsterdam RAI, Netherlands. Ahead of the show we learn about how NTT Docomo is taking a lead in the development of LTE, with many of its home-grown technologies forming part of the latest 3GPP LTE standards.

When will you start trialling carrier aggregation and will you introduce it before the rest of LTE-Advanced’s other features?

Docomo has started to develop base stations utilising our own technology — advanced Centralized RAN (C-RAN) architecture for LTE-Advanced. These high-capacity base stations are capable of carrier aggregation and HetNet/eICIC, which will make them ideal for high-traffic areas such as train stations and large commercial facilities. These will be available around 2015.

Will the RAN enhancements that you’re planning for LTE Advanced also need improvements in backhaul?

Optical backhaul has been put to good use in urban and suburban area of Japan already and these will also be used for our high-capacity base stations. However, improvements in backhaul will be essential to meet the increasing requirements of the market in the future.

How are your plans progressing around VoLTE and RCS?

Commercial VoLTE service is under development at NTT Docomo, but no clear deployment plan has yet been decided.

How advanced are your small cells plans and what’s your strategy for integrating them into your network?

Our advanced C-RAN architecture will enable small cells (so-called “add-on cells”) for localised coverage to cooperate with macro cells that provide wider area coverage. This will be achieved with carrier aggregation technology, one of the main LTE-Advanced technologies standardised by the 3GPP. The add-on cells will significantly increase throughput and system capacity, while maintaining mobility performance provided by the macro cell. These add-on cell can be upgraded to improve mobility performance and other aspects, and these improvements are under standardisation for 3GPP Release 12, using the name “Phantom cell” – a concept proposed by Docomo.

The LTE World Summit, the premier 4G event for the telecoms industry, is taking place on the 24th-26th June 2013, at the Amsterdam RAI, Netherlands. Click here to download a brochure for the event.

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