3G, 4G, WiMAX, 802.20, ABI - do we need them all ?

paul

Last week, AT&T Wireless debuted UMTS services in Detroit, Phoenix, San Francisco and Seattle. Based on technologies shared with Japan's NTT DoCoMo, these are, says the company, the first commercially available 3G UMTS services available in the United States.
That's good news, but is it the whole story? The wireless industry is basing its market strategy on the assumption of an evolution to 4G services, possibly based on orthogonal frequency-division multiplexing (OFDM). NTT DoCoMo expects to roll out its first 4G services in Japan within three years.
Smooth high-speed video and other forms of high-speed data are among the central benefits 4G proponents are touting, and are important reasons for its development. Yet, there are 3G networks delivering them already. WiMAX promises to do the same. So is the need for 4G inevitable?
According to ABI Research's vice president of research, Edward Rerisi, it's all about subscriber numbers and demand. Compared to present-day 3G, fourth generation technologies, he says, will be able to provide many more customers with these rich-media experiences at the same time.
It's all a question of the level of demand for data-based services, and there will be a wide variety to choose from. Some users may want video; some may transfer multi-megapixel images and still others might find location-based services, enterprise applications, or any of the other sophisticated data-based offerings more compelling.
"In any case," adds Rerisi, "when when consumer demand accelerates, the true value of '4G' will be revealed."
ABI Research's report, "Broadband Wireless - Last Mile Solutions" examines the technical features of these technologies and the complex dynamics of this market.
Founded in 1990 and headquartered in New York, ABI Research maintains global operations that support annual research programs, quarterly intelligence services and market reports in wireless, automotive, semiconductors, broadband, and energy.

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u2g13jmj

<P>我個人想法</P><P>最近無線的解決方法一直被提出</P><P>但實際使用者接受的情況還是與預期有差距</P><P>3G'WIMAX'4G每個技術各代表一些商業集團的競爭</P><P>如果技術推出與使用者間形成脫節</P><P>不知這些集團將如何面對營收的現實挑戰</P>

wurden

<P>楼上说得对，无线技术的商用实现投入太大。</P><P>没有强大的商业支持，再好的技术也可能实现不了，可惜啊</P>