Japan Telecom and Tohoku University to Launch Technology Trial for Seamless Roaming and Handoff Between Wi-Fi Access Area and Mobile Broadband Network; FLASH-OFDM(R) Deployed in 2 GHz Spectrum for Trial in Sendai, Japan.TOKYO & BEDMINSTER, N.J. -- Japan Telecom Co.,Ltd. (HQ: Minato-ku Tokyo), working jointly with Tohoku University's Research Center for 21st-Century Information Technology (IT-21 Center) and Flarion Technologies, today announced the technology trial for seamless roaming and handoff Switching a cellular phone transmission from one cell to another as a mobile user moves into a new cellular area. The switch takes place in about a quarter of a second so that the caller is generally unaware of it. between fixed Wi-Fi access area and a mobile broadband Description Mobile Broadband is a type of wireless internet access that differs from Wi-Fi. Mobile Broadband is the name used to describe the 3G services which are made possible by HSDPA and HSUPA, the latest technologies on the W-CDMA evolutionary path. network using Flarion's FLASH-OFDM(R) technology in Sendai, Japan. The mobile broadband aspect of the trial will make use of the 2 Gigahertz frequency band, recently given to Japan Telecom by the Ministry of Internal Affairs and Communications Ministry of Internal Affairs and Communications (総務省 Sōmushō . The trial is taking place at Tohoku University This article is Tohoku University in Japan. The same name university in China, 東北大学, is Northeastern University (Shenyang, China). Tohoku University ( . "The technology trial objectives are to verify high-speed Internet See broadband. access and seamless roaming, as well as mobile-to-fixed handoff with wireless LANs using the IEEE (Institute of Electrical and Electronics Engineers, New York, www.ieee.org) A membership organization that includes engineers, scientists and students in electronics and allied fields. 802.11b/g/a standard and FLASH-OFDM, " said Professor Kazuo Tsubouchi of Tohoku University's Research Center for 21st-Century Information Technology. "Our goal is to help prove the ability of IP-based technologies to work in harmony to help create a seamless broadband experience for people, government and public safety organizations, using fixed and mobile networks." Tohoku University's IT-21 center, on behalf of the Japanese government, is conducting research and development of next generation mobile Internet Refers to gaining access to the Internet using a lightweight, handheld device. See Mobile IP, PDA, smartphone and mobile TV. networks and devices. IT-21 is exploring feasibility of mobile and fixed wireless technologies for disaster protection and administration networks, as well as high-speed communications for trains and automobiles. "Japan Telecom has already deployed public wireless LAN service "MOBILE POINT" in train stations and hotels," said Tetsuya Yuge, Executive Vice President, CTO (Chief Technical Officer) The executive responsible for the technical direction of an organization. See CIO and salary survey. , Director of Laboratories of Japan Telecom. "Through this trial we hope to create a ubiquitous network service to allow customers to roam between wireless LAN and mobile WAN network coverage." "We're honored by the opportunity to work with Tohoku University's IT-21 center and Japan Telecom," said Michael Gallagher Michael Gallagher is the name of several different people:
About FLASH-OFDM(R) Mobile Broadband The average speed of a FLASH-OFDM network is 1 to 1.5 Mbps in the downlink, with peak rates of 3.2Mbps, and 300-500 Kbps in the uplink. With FLASH-OFDM, users do not need to make any modifications to user settings, applications, protocols, content or devices to experience mobile broadband. With Flarion's IP-friendly FLASH-OFDM(R) technology, mobile operators can seamlessly connect corporate LANs with a wireless Wide Area Network with the speed and low packet latency that exceeds stringent corporate network requirements. Earlier this year, Flarion announced its second-generation system called Flexband(TM). With Flexband, a single 1.25MHz (MegaHertZ) One million cycles per second. It is used to measure the transmission speed of electronic devices, including channels, buses and the computer's internal clock. A one-megahertz clock (1 MHz) means some number of bits (16, 32, 64, etc. Flexband carrier sector will be able to deliver peak downlink data rates of 5.3Mbps, 1.8Mbps uplink, 2.5Mbps sustainable sector throughput and consistent high-speed data performance of up to 800Kbps at the cell edge. This performance enables operators to deliver a seamless mobile broadband experience across their entire network. In a fully supported 5MHz multi-carrier system, data rates increase to 15.9Mbps peak and 6Mbps sustainable. Flexband delivers the industry's highest data capacity, supporting over 600 subscribers consuming 1GByte of data per month. Flarion completed the industry's first successful seamless mobile broadband handoff between an 802.11b wireless Local Area Network (LAN (Local Area Network) A communications network that serves users within a confined geographical area. The "clients" are the user's workstations typically running Windows, although Mac and Linux clients are also used. ) and a fully mobile broadband Wide Area Network (WAN) in December 2001. The mobile data handoff demonstrated the ease with which users can move across Wi-Fi and FLASH-OFDM(R) networks seamlessly, while conducting high-speed IP-based networking sessions. Global operators conducting trials include: T-Mobile, Telstra and Vodafone. Most recently, Digita of Finland chose Flarion for a countrywide deployment of FLASH-OFDM in the 450MHz band. Arbital, in conjunction with Flarion, will deploy a new network for Retel in Croatia. About Japan Telecom Japan Telecom started operations in 1986 as a carrier providing long-distance telecommunications services throughout Japan. Through approximately 12,000 km of fiber-optic networks across the country, Japan Telecom provides a wide range of voice and data communications data communications, application of telecommunications technology to the problem of transmitting data, especially to, from, or between computers. In popular usage, it is said that data communications make it possible for one computer to "talk" with another. services tailored to suit all needs of corporate, small and medium size enterprises, along with individual customers. Japan Telecom strives for promoting and realizing the revolution of lifestyle, work style and business model with its cutting-edge broadband technology broadband technology Telecommunications devices, lines, or technologies that allow communication over a wide band of frequencies, and especially over a range of frequencies divided into multiple independent channels for the simultaneous transmission of different signals. . Japan Telecom is a wholly owned subsidiary Wholly Owned Subsidiary A subsidiary whose parent company owns 100% of its common stock. Notes: In other words, the parent company owns the company outright and there are no minority owners. of Softbank Corp. http://www.japan-telecom.co.jp/ About Tohoku University IT-21 center The purpose of the IT-21 center is development of practical technologies for IT based on the advanced technologies of RIEC RIEC Research Institute of Electrical Communication (Japan) with the partnership among Industry, Government and University. Combination of the technologies of the University and Industry makes practical technologies with availability for the commercial products. The center actively accelerates to obtain the intellectual properties generated from the development of practical technology to the Industry. For more information, see: http://www.riec.tohoku.ac.jp/lab/it-21center/index-e.html About Flarion Technologies Flarion Technologies is mobilizing broadband communication with its innovative mobile broadband technology. Flarion's FLASH-OFDM(R) technology enables licensed mobile operators to profitably offer voice and data broadband services. FLASH-OFDM Flexband(TM) works in licensed frequencies between 400MHz and 3.6GHz. Flarion Technologies is based in Bedminster, New Jersey (USA). www.flarion.com Note to editors: Flarion and Flexband are trademarks and FLASH-OFDM is a registered trademark of Flarion Technologies. Other trademarks and registered trademarks referenced herein remain the property of their respective owners. |
|
||||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion