InterDigital Discusses WCDMA Technology Roadmap for the Advanced Mobile Internet

date: November 28, 2001

InterDigital Communications Corporation, a developer and enabler of advanced wireless technologies and product platforms, today presented 3G wireless technology roadmaps for the advanced mobile Internet.

To enable fully rich applications, the 3G WCDMA standard provides for the deployment of both FDD and WTDD technologies.

In a presentation delivered today at the 5th International 3G Mobile Systems Japan conference in Tokyo, InterDigital's Chief Technology Officer, Dr. Alain Briancon, described the hierarchical system architecture for FDD and WTDD, which will incorporate macro, micro, and pico cell deployment scenarios.

He also explained how the asymmetric nature of WTDD technology, also known as High Chip Rate TDD, is the most cost effective solution for "always on" data applications for consumers and corporate users.

"As 3G services are deployed, we, and many in the industry, believe that applications will shift from predominantly voice to data," explained Dr. Briancon to the network operators and equipment manufacturers assembled in Tokyo. "Indeed, here in Japan the success of NTT DoCoMo's i-mode and J-PHONE's J-Sky services demonstrates the tremendous appetite that consumers have for data and rich voice applications. We expect that as businesses become a more significant portion of the subscriber base with the introduction of 3G services, the trend toward data services will accelerate.

Dr. Briancon added, "the results of the first month's analysis of the FOMA launch, while preliminary, bear out these trends. Corporations represent two-thirds of the new FOMA subscribers and over 40% of the new subscribers chose the videophone to gain access to the full range of high-end 3G data services. These data and rich voice services are typically asymmetric or bursty in nature. WTDD technology's ability to accommodate such asymmetry in a spectrally efficient manner provides an important tool for the operator to maintain and improve the quality of service."

As the volume of data traffic over 3G networks increases, InterDigital envisions applications for WTDD technology not only at capacity hot spots such as shopping malls and airports, but also for enterprise systems, such as private intranets and extranets, and integrated services in Virtual Private Networks.

WTDD technology will be particularly efficient in handling a wide variety of multi-media traffic, including transmission of pictures, video streaming, making airline reservations on the go, Internet shopping and chat, music and many PDA applications.

InterDigital will make its WTDD technology available to other companies through hardware and software products, including chips for 3G terminals and software protocol stacks, and through technology transfer and licensing agreements. The slides used in Dr. Briancon's presentation are available on InterDigital's website, http://www.interdigital.com/

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