Network Technology
Network Technology

Network Technology

Hitachi Unveils World's Smallest RFID

According to AP, Hitachi recently unveiled RFID chips that are just 0.002 inches by 0.002 inches and look like bits of powder. They’re thin enough to be embedded in a piece of paper, company spokesman Masayuki Takeuchi said Thursday. Shown to the public for the first time earlier this month, the new chip is an improvement on its predecessor from Hitachi — the Mu-chip, which at 0.4 millimeters by 0.4 millimeters, looks about the size of the period at the end of this sentence.

DoCoMo Achieves 5Gbps Data Speed

NTT DoCoMo just announced it has achieved a maximum packet transmission rate of approximately 5Gbps in the downlink – claiming a World’s First – using 100MHz frequency bandwidth to a mobile station moving at 10kmh. The field experiment 4G radio access took place in Yokosuka, Kanagawa Prefecture on December 25, 2006. After having achieved a maximum speed of 2.5Gbps in December 2005, DoCoMo doubled the speed in the more recent test by increasing the number of MIMO transmitting and receiving antennas from six to 12 each, and by using proprietary received signal processing technology.

ITU to make WiMAX a 3G standard

WiMAX Day, a newsletter published by the WiMAX Spectrum Owners Alliance, reported the ITU Working Party 8F met in Cameroon at the end of January to look at IMT-2000 and systems beyond IMT-2000. Such a move would bring considerable benefits by allowing WiMAX to operate in globally allocated frequency bands, enable global roaming and reduce equipment costs.

Radio Waves Declared Safe

Japan’s mobile phone operators, NTT DoCoMo, Inc., KDDI Corporation and SoftBank Mobile Corporation have confirmed that radio frequency energy from mobile phone base stations does not cause damage to human cells in vitro studies. Since November 2002, the companies have been collaborating to examine the effects of radio waves. As part of the collaboration, large-scale experiments have been conducted on the cellular and genetic level using radio waves up to 10 times stronger than the limit set forth in radio frequency radiation protection guidelines for base stations. In an interim report on April 26, 2005, the companies announced they had found no effects on cell proliferation, gene expression profile, or DNA single-strand breaks. Now they have found there are no genetic alterations or protein functions that could be associated with cell transformation or programmed cell death (apoptosis).

Handset Makers Sued over Bluetooth

Three major electronics companies have been sued by a foundation which claims that their use of Bluetooth wireless technology infringed on patented work at the University of Washington. According to the lawsuit, Bluetooth-based computers, cell phones and headsets made by Matsushita, Samsung, and Nokia have violated four patents, including one that was issued for research done in the mid-1990s by Edwin Suominen when he was an undergraduate student at the University of Washington.

DoCoMo Super 3G Spending Forcast

DoCoMo will keep initial investment on its so-called super 3G network down to 100-200 billion yen ($841 million-$1.7 billion), according to reports in the Nikkei shimbun. DoCoMo has spent a total of 2.8 trillion yen on its 3G network in the past six years. Since the company will use existing base stations and other equipment for the super 3G, it would be able to keep down the necessary initial capital spending, the Nikkei said.

IPMobile Tests 42MB Wireless

New market entrant IPMobile, which was granted a carrier license by Japan’s Ministry of Internal Affairs and Communications in November 2005, will conduct advanced TD-SCDMA field trials in Tokyo later this month. While the company’s commercial launch – expected in early 2007 – will offer a maximum theoretical download speed of 11Mbps, the so-called E-R7 (evolved release 7) promises data-centric downloads as fast as 42.2Mbps.

OKI and Huawei Collaborate for WiMAX

Oki Electric and Huawei Technologies today announced an agreement to collaborate in the mobile WiMAX business to the telecom carriers in Japan. OKI will provide Huawei’s mobile WiMAX Series products to telecom carriers in Japan starting in the fiscal year ending March 2008. OKI will also provide its products globally with the support of Huawei. OKI has been conducting business in China from the early 1980s, and has been working with Huawei in various areas including optical components. Huawei provides wireless products worldwide, including mobile WiMAX and 3G mobile phone systems.

NEC Launches PASOLINK NEO

NEC announced that it has introduced to the global marketplace a new gigabit Ethernet interface (GbE) for its PASOLINK NEO point-to-point wireless access system designed to enable broadband, IP-based networks with advanced functionality, high speed and superior expandability. This new offering in the PASOLINK series provides a gigabit Ethernet interface for the first time, and using a proprietary transmission scheme, enables throughput of over 150 Mbps in the 28 MHz band.

Fujitsu to Develop Super 3G Base Stations

Fujitsu Limited today announced that it has been selected in NTT DoCoMo’s procurement process to develop and manufacture prototypes and commercial equipment for DoCoMo’s super 3G wireless base stations. Fujitsu has been actively involved in the 3GPP’s standardization initiatives from the outset, and has been developing the fundamental technologies required to improve spectrum efficiency for the Super 3G standard, such as multi-antenna system and OFDM technologies.