NTT DoCoMo's 4G research hits 1Gbps
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TOKYO -- NTT DoCoMo, Japan's biggest mobile communications carrier, achieved a 1GbpsÂ packet transmission speed using fourth-generation (4G) mobile communication equipment on Aug. 20, the company said Friday.
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Blog: Research into WiFi service found the fastest of the free wins
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For the man on the Korean omnibus... On a bus fitted out specially for the occasion in Jeju this week, Samsung demonstrated a new version of 4G technology transferring data at speeds of 100Mbit/s.â¦
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The technology promises download speeds of 1 to 1.5 MB per second, reaching peaks of up to 3.2 MBps. So far, Cisco, IBM and Nortel, all major sources of equipment to telecom service providers worldwide, have
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(InfoWorld) - Verizon Wireless on Thursday unveiled its first deployments of a faster mobile broadband service that multiplies speeds upstream to the Internet. The carrier announced five areas where Revision A of its EV-DO (Evolution-Data Optimized) technology is commercially available. Verizon already has EV-DO in places across the country, but in a version that offers upload speed of less than 100Kbps. Revision A delivers between 300Kbps and 400Kbps upstream, according to Verizon. Downstream speed goes up with the new version, too, but less dramatically: Verizon says 450Kbps-800Kbps, versus about 400Kbps-700Kbps. EV-DO is one of two main families of 3G technology, going up against WCDMA (Wideband CDMA), which is being adopted in increasingly fast iterations by carriers that have used the popular GSM (Global System for Mobile Communications) cell-phone system. Both are among a proliferation of emerging wireless technologies, including Wi-Fi and WiMax, that are expected to come in handy for users in different situations. But mobile operators in the U.S. and most other countries are still working on getting users to adopt the new services in large numbers. Verizon's network has the new technology in parts of Massachusetts, including Boston and its suburbs; Chicago, Gary, Indiana, and suburbs; Salt Lake City and other cities in Utah; the Richmond and Hampton Roads, Virginia, areas; and throughout the broadband coverage area in Florida. To take advantage of the new speed, which is offered as part of the carrier's existing BroadbandAccess service, subscribers will need compatible devices, two of which will go on sale Friday at Verizon's Web site. The company will be selling the USB720 modem, which plugs into a PC via a USB interface, and the AirCard 595, which slides into the PC Card slot on a notebook. Both are available immediately through Verizon's business sales channels. Verizon is the biggest U.S. carrier with EV-DO, but rival Sprint NextelÂ is farther along in upgrading to the new, faster version. Sprint said Tuesday it can reach 95 million people in 24 major markets with Revision A. Sprint first rolled out the new technology in October and most recently added South Florida, Portland, Oregon and Puerto Rico to its coverage area. There are several Revision A client devices available for Sprint's network, including three PC Cards and a USB modem, as well as stand-alone modems and a Sony notebook.
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Forget Bluetooth and UWB. A group of Japanese companies believes it's found a better answer for short-range networking.
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(InfoWorld) - NTT DoCoMo came close to hitting another data transmission milestone in its research into next-generation cellular telephone systems during an experiment conducted in Japan on Dec. 25 last year. The company, Japan's leading cellular carrier, managed to transmit data at close to 5GbpsÂ to a receiver moving at 10 kilometers per hour, said Yoshiki Kakuda, a spokesman for the Tokyo company. He said the company's public relations department didn't know the exact speed achieved but that it was close to the 5Gbps mark. About a year earlier NTT DoCoMo succeeded inÂ transmitting data at 2.5GbpsÂ and this time managed to double that by increasing the number of MIMO (multiple in multiple out) transmitting and receiving antennas from six to 12 each and using better signal processing in the receiver. MIMO involves sending data using multiple antennas to increase the total throughput. The result was a doubling in the amount of data transmitted in the same 100MHz chunk of radio spectrum. Details of the experiment will be detailed at next week's 3GSM World Congress in Barcelona, Spain. NTT DoCoMo has been working on what it calls 4G (fourth-generation) technology for close to 10 years but the technology remains some way from commercialization. The carrier had previously said it plans to launch 4G in Japan around 2010 but recently indicated it plans to wring more speed out of its WCDMA (Wideband Code Division Multiple Access) 3G network before switching to a new technology. The carrier plans to launch a "Super 3G (third-generation)" service around 2010 that will offer data transmission at around 100Mbps. When NTT DoCoMo launched its 3G network in 2001, it could carry data at 384Kbps but that was recently raised to 3.6Mbps with the launch of an upgrade called HSDPA (high-speed downlink packet access). Carriers in other countries are also deploying the faster technology on their networks.
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Based on a CDMA EV-DO (Evolution-Data Optimized) 3G network, Verizon&#39;s BroadbandAccess promisses speeds of 300-500kbps. The company announced BroadbandAccess will be available in 13 major metropolitan markets
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(InfoWorld) - A Japanese mobile carrier will test a cellular technology that promises downloads as fast as 42.2Mbps (bits per second) in Tokyo this month. The tests will be conducted by IPMobile, a new cellular carrier that is planning to launch a data-centric commercial service in the Tokyo area next year based on the TD-CDMA (time division code division multiple access). The service had been due to launch in October 2006 in three cities, but has been scaled back to just Tokyo and will launch about six months later than planned. IPMobile's initial commercial service will offer a maximum theoretical download speed of 11Mbps but the trials taking place this month will test out a more advanced version of the technology called E-R7 (evolved release 7), said Yumi Sakamoto, a spokeswoman for the company. The field trials will test how well the signals travel, real-life download speed, and various Internet applications. Also included will be streaming of high-definition television. IPMobile, a privately financed company, holds one of three licenses recently issued by the Japanese government to provide cellular service in Japan. Its shareholders include Internet Initiative JapanÂ (IIJ), CSK Group, Shoeisha Co., and the Rakuten Group. When it launches its service next year it will be entering a competitive marketplace. All three of Japan's major cellular carriers have just launched high-speed data services. NTT DoCoMo and SoftbankÂ are offering 3.6Mbps HSDPA (High Speed Downlink Packet Access) on their respective WCDMA (Wideband CDMA) networks and KDDIÂ is also offering equally fast downloads on a CDMA2000 1xEV-DO Rev.A network. All three carriers charge PC users according to the amount of data they send and receive and there are no flat-rate plans that cover PC use. A fourth carrier, Willcom, is enjoying popularity among PC users despite download speeds of between 32kbps and 256kbps because it offers a flat-rate plan.
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(InfoWorld) - Sharp has developed a widescreen Windows Mobile-based PDA (personal digital assistant) for a new Japanese cellular carrier that will begin service next month. The EM-One is compatible with EMobile Co.'s high-speed 3G (third-generation) data service that will launch on March 31 and offer download speeds of up to 3.6Mbps. Also packed into the device is 802.11b/g Wireless LAN, Bluetooth, and a tuner for Japan's mobile digital television broadcasts. A full QWERTY keyboard slides out from behind the display for typing and the device also sports a camera, although its 1.3-megapixel quality is a little low compared to cell phones. Running Windows Mobile 5.0, it has a 4.1-inch widescreen with WVGA (800 pixels by 480 pixels) resolution. Pre-installed software includes Internet Explorer Mobile, Opera Mobile, versions of World, Excel and Powerpoint, Windows Media Player 10 Mobile, a PDF viewer, image and video player software, a bar code reader and dictionary software. It will cost between Â¥39,800 and Â¥95,000 ($331 and $795), respectively, depending on the service plan and won't be available through other carriers or in other countries. It measures 140 millimeters by 70 millimeters and is 18.9 millimeters thick. It weighs 250 grams including the battery pack. EMobile is one of two new cellular carriers planning to launch service this year in Japan. The company has built a WCDMA (wideband code division multiple access) network for data services that will offer HSDPA (high speed downlink packet access) from launch. EMobile is owned by Japanese broadband provider EAccess Co. and hopes to tap in to the market for wireless data services. Cellular data services are popular in Japan, but mainly for downloading content to cell phones or looking at mobile Internet sites. As a result data charges are tailored so carriers can make money from services that typically involve shifting a small amount of data. That means surfing the wider Internet from a PC is often an expensive proposition because of the much greater amount of data involved. EMobile will offer flat-rate services for PC owners in addition to users of the EM-One, it said Tuesday.
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The worldwide market for Wi-Fi network infrastructure and adapters surpassed $1.0 billion in quarterly revenues for the first time in the fourth quarter of 2003, according to market research firm In-Stat/MDR.
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InfoWorld - Researchers from Siemens have successfully tested technology that not only increases the speed of passive optical broadband connections to the home or office but also the radius of coverage.
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Leading wireless carriers and telecoms equipment makers have agreed to develop an advanced mobile phone standard capable of sending high-resolution video in an instant, Japan's NTT DoCoMo said on Friday.
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German electronics manufacturer Siemens has set what it claims to be the fastest-ever wireless connection. At its research lab in Munich, Siemens achieved a transmission speed of 1gbps by combining an intelligent
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Company says it will come out with 1-gigabit chip for mobile devices next year.
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InfoWorld - NTT DoCoMo&#39;s 3G network in part of central Tokyo was hit by trouble on Saturday resulting in problems for tens of thousands of users.
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High-speed Wi-Fi Internet access has been tested successfully on the BART subway in the Bay Area.