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NTT DoCoMo `PushTalk™` service (so-called PoC) launched using NEC's IMS technology. [ 03:28 ]
Being connected to everyone, anytime, anywhere, has become an essential part of our everyday lives. And no place more so than in Japan.
NTT DoCoMo is Japan’s biggest mobile telecoms provider. In 2001, NTT DoCoMo led the world with the introduction of a 3G service providing multimedia content, and video conferencing functions on their mobile phones.
Koji Yamamoto Associate Senior Vice President Managing Director R&D Strategy Department NTT DoCoMo, Inc.;
With the introduction of 3G phones in 2001, we changed our focus from voice communication to multimedia. With faster transmission speeds, we can now have functions like visual communication and the ability to download rich media from the internet.
The challenge for NTT DoCoMo was to keep their lead with ever more innovative services.
One solution was Push to Talk, the launch of an ingenious service which allows a user to call a number of subscribers at the same time. Once connected, the callers can use the phones as walkie talkies, pressing and holding the buttons as they take turns to talk.
The Push to Talk service relies upon innovative technology. NTT DoCoMo collaborated with NEC to build an IP Multimedia Subsystem or IMS, which integrates mobile and broadcast services through IP based technology. This will play a key role in the ongoing development of cutting-edge multimedia services.
Koji Yamamoto Associate Senior Vice President Managing Director R&D Strategy Department NTT DoCoMo, Inc.;
The schedule for the launch of the service was very tight so I know it was very challenging for them but NEC took care of things precisely and quickly and for that we are extremely grateful to them.
The usage of these cutting edge multimedia services will expand as network speeds increase. To meet this need NTT DoCoMo has just launched a High Speed Downlink Packet Access service, a technology capable of transmitting 3.6 megabytes per second. NEC is now consulting with NTT DoCoMo on how best to improve quality in order to strengthen this network.
NTT DoCoMo’s mobile services have now expanded to a wide range of functions. For example, the new wallet phone functions as a credit card. Swiping the wallet phone over a special terminal reader, the customer can purchase items without actually having to pay in cash.
Koji Yamamoto Associate Senior Vice President Managing Director R&D Strategy Department NTT DoCoMo, Inc.;
In the future, in addition to regular mobile communications including multimedia and credit services, there will also be sensor network capability. This means customers will be able to use their mobile phones to remotely activate sensors to operate their home appliances, such as TVs, video-players, air conditioners and refrigerators. I think that the time will come when we will use mobile phones in such ways.
NTT DoCoMo’s collaboration with NEC develops value-added solutions which ultimately enhance the quality of people’s lives.
The mobile phone is an indispensable part of people’s lives. In response to the ever-increasing demand by users for multimedia services, Japanese mobile operator NTT DoCoMo decided to introduce the world’s first 3G mobile phone service based on W-CDMA.
"The 3G service introduced in 2001 made voice transmission, download of music and videophone function possible. In addition, it also enabled the use of massive data contents such as video download and play,"explains Koji Yamamoto, Managing Director of R&D Strategy Department of NTT DoCoMo, Inc.
In 2005, NTT DoCoMo launched a new `PushTalk™` service which enables users to speak with several people at the same time at the push of a button. NEC collaborated in constructing the IP Multimedia Subsystem (IMS) which made PushTalk™ possible. IMS is a platform which enables new multimedia services, through integrating diverse services from fixed and mobile networks, to broadcast communication, by use of IP technology. This will play a key role in the on-going development of cutting-edge multimedia services. Mr. Yamamoto says, “While in the process of the development, the schedule was very tight. But NEC corresponded accurately and promptly to overcome the hurdle and we’re grateful to them for this.”
NTT DoCoMo is also making a major thrust in turning the mobile phone into a replacement for cash and credit cards. Another leap was also made in 2006 with the launch of the virtually instantaneous, High Speed Downlink Packet Access (HSDPA) service. The HSDPA is a high speed packet communication technology capable of transmitting 3.6 megabits per second, and enhances the quality of network service.
NEC also played a key role in making these services a reality.
Looking towards the future, NTT DoCoMo is focusing on research and development to transform all their networks to IP-based networks, including the development and standardization of the next HSDPA standard; Super 3G and 4G. NEC will continue to collaborate with NTT DoCoMo to deliver solutions that will achieve their goals.
This is one way NEC is paving the road for tomorrow, providing new value-added service solutions to the mobile telecommunications industry and enhancing the quality of people’s lives.
'PushTalk' is a trademark of NTT Docomo, Inc.
