To: gdichaz who wrote (8309 ) 3/23/2001 3:36:47 PM From: Eric L Read Replies (1) | Respond to of 197497 re: more Tantivy "I-CDMA" - QCOM Patent Free ??? << Any idea whether I-CDMA by Tantivy requires a Q license? In others words, does the Q earn money? >> Evidently they CLAIM no. I would certainly have to raise an eyebrow at that claim. >> Tantivy Pushes Potential CDMA Competitor To 1XEV Peggy Albright March 19, 2001 Wireless Week Along Florida's high-tech "space coast," where the defense industry has advanced many communications technologies, is a wireless startup that aims to take wireless data to new heights. The Melbourne-based company, Tantivy Communications, is staffed with people who live and breathe a dream of giving people high-speed wireless Internet access via their portable devices. Their aim is to pull this off with a new packet-based technology called Internet-CDMA, which offers peak data speeds of 1.9 megabits per second and supports many simultaneous users with rates up to 368 kilobits per second for downloading data, and 224 kbps for uploads. With 400 users per cell site, it can offer 250 kbps data speed in both directions. The company says it can achieve the latter rates regardless of where the customers are located within a cell sector. The tradeoff is that the data rates can't be achieved while the user is driving an automobile that is traveling at highway speeds . But Tantivy says capabilities in a car are less needed than portable access, such as when a user takes his laptop to a meeting or caféat farther distances from a cell site. "We've optimized for the range. We offer a consistent grade of service all the way from the cell tower to the edge of the cell. That's something that [High Data Rate] and other technologies can't do," says Randy Roberson, the company's president and CEO. And that's the catch. Here is a CDMA-related technology designed to undermine some of CDMA's own markets, although Roberson sees his option as a complement, not a competitor. The Tantivy system can be installed in a standard 1.25 MHz channel, and it's spectrally compatible with CDMA, which means operators can get it on the air by adding it to many of their existing base station components. The first phase of cdma2000 next-generation technology, called 1XRTT, has a data-only option, called 1XRTT Evolution-Data Only, for example. Called 1xEV-DO for short, this is the recently standardized CDMA technology based on Qualcomm's previously unpopular HDR and adopted by top-tier equipment manufacturers in recent months. According to data from the CDMA Development Group, IxEV-DO is expected to provide peak data rates of 1.25 Mbps per second for downloading data and 300 kbps for uploads when users are mobile and moving at vehicular speeds. Average rates of 600 kpbs for downloads and 144 kbps for uploads are achieved in a fully loaded system. These speeds are further increased with a second evolutionary phase of 1XEV, called 1XEV-DV, which also supports voice. But while the 1xEV-DO approach has speed advantages, Tantivy's solution offers performance advantages throughout a cell site. "Usually in a packet system, the farther you get from the base station, the lower the data rates. Tantivy, or iCDMA, isn't like that. iCMDA gives you the same available bandwidth throughout the cell," says Iain Gillott, founder of iGillottResearch. Another differentiator between the two systems, he says, is 1xEV was designed for use at vehicular speed; Tantivy's technology was not. Vendors already are working to bring 1xEV to market. Motorola, for one, says it will have a 1XEVDO product available by the end of 2002. Tantivy's solution, which the company announced last week, will begin field trials with Shinsegi, a component of SK Telecom in South Korea, this summer and could potentially race 1xEVDO to market. Tantivy expects to see field trials in this country late this year and commercial deployments in early 2002. There's another catch. Tantivy says it developed this technology independently of available CDMA platforms, and it is not dependent on Qualcomm licenses. "Our belief is, and we've had numerous amounts of help on this, that we're patent infringement-free from Qualcomm's CDMA. We believe our technology is unique to Tantivy, and we own our technology," Roberson says. Whether Tantivy gains operator acceptance, Gillott thinks operators at least will be intrigued. "I would be surprised if the carriers were not interested in this segment of the market," he says. No doubt CDMA operators in the United States will be watching the field trials in Korea. If this is as easy to implement as Tantivy says, operators might give this option a closer look. << - Eric -