Telsima announced WiMAX 450/700 MHz gear at the India Telecom 2007 show at New Delhi, 2007. The Telsima solution can be customized for any specified band within that range — by default it supports the 450 MHz and 700 MHz bands.
Telsima uses standard WiMAX SoC, leveraging all the benefits of this open standard point-to-multipoint technology, making way for unmatched set of rich features at low cost.
“Compared to the typical 3.5 GHz based BWA systems, a Sub-GHz band based network requires approximately 18 times less infrastructure per square kilometer coverage”, according to Burcak Beser, CTO Telsima. The Telsima WiMAX 450/700MHz platform delivers VoIP, Video Services and high-speed Data while supporting different bandwidths, with Nomadic and Mobility support.
Telsima’s 700MHz solution may allow operators to offer mobile services, MIMO antenna diversity and ASN type network control today. ASN Gateways connect the WiMAX Radio Access Network to the IP core.
WiMAX MIMO contributes to the Mobile WiMAX secret sauce.
- MIMO A (”spatial diversity“), sends multiple, redundant copies of a data stream to the receiver. It provides much the same speed as a single antenna, but adds more robustness to the link, increasing range.
- MIMO B (”spatial multiplexing“) sends different signals on each antenna. It can effectively double the bandwidth of the transmission link - but only if there is low correlation in the 2 antenna signals and the signal to noise ratio is high.
- The Mobile WiMAX specification provides automatic and continuous switching between MIMO-A and MIMO-B, for optimum speed and range under varying conditions.
- Adaptive Antenna Systems (”beamforming”) uses multiple antennas to form a tracking beam. AAS can provide additional range in LOS environment and reduce the effects of interference. Some WiMAX basestations may get a beamforming signal boost in 2-3 years, with no change in the client required.
VSNL plans to invest about $500-600 million for rolling out WiMAX services in 35 cities across India over the next three years. VSNL, a Tata Group company, India’s largest conglomerate company, has tied up with Telsima for WiMAX gear. It would launch the service in Bangalore and then cover other major cities like Delhi, Mumbai and Hyderabad in the first phase. In the second phase, the company plans to reach to customers in about 35 cities across the country — mainly consisting of all the state capitals.
In other news, Sequans says its now delivering the SQN1140, their fourth Mobile WiMAX chip, following a Mobile WiMAX Wave 1 chip in 2006 and two baseband Mobile WiMAX Wave 2 chips in 2007 for base station and mobile stations. Sequans provides dual transmit and dual receive MIMO operation and is designed to support the advanced MIMO technology with low power consumption.
GigOm’s Katie Fehrenbacher, has a backgrounder on Paul Allen’s involvement in 700 MHz spectrum.
It’s important to remember that this is far from Allen’s first involvement in wireless auctions. In July 2006, a little company called Bend Cable Communications, backed by Allen and his firms Vulcan Spectrum and Charter Communications and in partnership with a Bend, Ore.-based cable company by the name of Bend Broadband, filed for the wireless spectrum Auction 66. Allen ended up qualifying for the auction and paid an upfront fee of $176,000, but if I recall correctly, didn’t end up purchasing much.
Allen’s plans to run a broadband provider actually started when he bought a major share in cable company Charter Communications in 1998; that company ended up providing service to 5 million-plus subscribers. Allen was also reported to have purchased $15.1 million worth of spectrum in 2002 through Vulcan and Charter, and the WSJ says that Allen’s Vulcan bought at least 24 700-megahertz licenses in 2003, based in Washington and Oregon.
We’re thinking Allen’s Charter Communications still harbors wireless dreams similar to those of the other cable companies, which have been trying to use wireless to fight the phone companies in the great subscriber acquisition race.
Allen was actively involved in the first 700 MHz auction back in 2002.
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