Network Technology
Network Technology

Network Technology

KDDI Eyes Method for Advanced Mobile

KDDI Corp. intends to maintain the CDMA 2000 method, used for the current 3G mobile service offerings, for voice communications in future advanced mobile services, company officials have said according to JiJi press. For data transmission, however, KDDI plans to adopt the Long Term Evolution, or LTE, technology, an internationally supported method to be compatible with the wideband code division multiple access, or W-CDMA, mobile method now used by its rivals NTT DoCoMo and Softbank Mobile the officials said.

DoCoMo Achieves 250Mbps Downlink

DoCoMo has announced their latest speed trials in the march towards Super 3G or so-called LTE technologies. According to the press release they have refined the experimental system using an actual wireless environment near its R&D labs in Yokosuka Research Park to record a downlink transmission rate of 250Mbps in the 20MHz bandwidth, the maximum under new Super 3G standards. DoCoMo is continuing to test connection handover from one base station to another, and the functionality of applications in indoor and outdoor environments.

UQ Selects Fujitsu's Mobile WiMAX

Fujitsu has announced that its outdoor base station for mobile WiMAX, BroadOne WX300, was selected by UQ Communications for the company’s nationwide WiMAX services infrastructure in Japan. UQ is jointly owned by KDDI, Intel, JR East, Kyocera, Daiwa and the Bank of Tokyo-Mitsubishi UFJ, and intends to begin offering commercial WiMAX service in Japan starting in 2009 according to the press release issued by Fujitsu.

Japan Launches (Big) Kizuna Satellite

KIZUNA (WINDS) was recently launched from the Tanegashima Space Center with the goal to establish the world’s most advanced information and telecommunications network. It will enable high-speed, large-volume data transmission, allowing ultra-fast domestic and international Internet-based communications with an expected network speed and capacity much higher than anything achieved previously, according to the JAXA announcement. The proposed system aims for a maximum speed of 155Mbps downlink and 6Mbps uplink for households with 45-centimetre dish, and ultra-high speed 1.2 Gbps connection for offices with five-meter antennas.

Sony to Demo TransferJet at CES

Sony has announced “TransferJet”, a new Close Proximity Wireless Transfer Technology enabling the high speed transfer of large data files (photos, HD images, etc.) between electronic devices such as mobile phones, digital cameras, digital video cameras, computers and TVs. Using this technology, data can be sent at speeds of 560Mbps. Sony will present reference exhibits of this newly developed technology at CES International, to be held in Las Vegas from January 7th.

WiMax Licenses Going To KDDI, Willcom

The Communications Ministry has decided to grant licenses for next-generation wireless broadband service to Willcom Inc. and a group led by KDDI Corp. according to the Nikkei. The ministry’s decision is based on an examination of about 120 criteria, including business plans and technologies. KDDI had started development of WiMax technology ahead of others in 2003, and Willcom has a track record for bringing PHS (personal handyphone system), a technology created in Japan, to China.