4G
4G

4G

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.

HTC Announces Titan II for eMobile

HTC has just confirmed [.pdf in Japanese] the introduction of their HTC TyTN II – or Titan Two – which will become available for sale in Japan on Friday, March 28, 2008 via eMobile, under the product name “S11HT (EMONSTER)”. The HTC TyTN II will be the first device from eMobile supporting broadband voice services and this handset is the eighth model, including designs scheduled for future release, from the HTC lineup to appear in Japan.

NextWave Wireless to Aquire IPMobile

NextWave Wireless announced that it has signed a definitive agreement to acquire all shares of IPMobile held by Mori Trust Co., Ltd., of Japan. Upon closing of the transaction, NextWave will hold a 69.2% stake in IPMobile. The agreement is subject to required government approvals. IPMobile has been working with IPWireless towards a commercial launch of a TD-CDMA wireless broadband network by November of this year. Terms of the agreement were not disclosed.

Toshiba Pushing NAND Memory

Toshiba has announced a new series of embedded NAND Flash memories for mobile phones offering both a configurable single-level cell (SLC) memory area and a multi-level cell (MLC) memory area, allowing applications and data to be stored on the same chip. The five memories in the mobileLBA-NAND series range in capacity from 2- to 32-gigabits(1) (Gb). The 2Gb, 4Gb and 8Gb versions can be allocated as SLC up to their full capacity, while the 16Gb and 32Gb versions can support up to 8Gb of SLC, offering manufacturers greater flexibility in allocating memory in their products. Samples of mobileLBA-NAND packaged in MCPs will be available from August 2007.

DoCoMo Reports Roaming Glitch

According to this report on Reuters, DoCoMo has said that as many as 240,000 users may not be able to use their phones overseas because of a software glitch. Faulty SIM cards on certain models are apparently preventing connections for messages and voice calls on networks outside Japan. DoCoMo said the glitch and it will replace faulty SIM cards for free.