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wareami
(Hive Addict)
10-20-04 04:50
No 536736
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Wide-Area Wireless Data: Forever Evolving
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Wide-Area Wireless Data
Forever Evolving
Now that you've digested GPRS and CDMA2000 1XRTT, carriers are adding more to the buffet with significant new enhancements that will boost data rates and increase the number of supported applications. It's a boon for enterprises that pick the right provider and plan, but what do these new capabilities mean for the average enterprise?
Oct 14, 2004 | By Peter Rysavy
With emerging wide area wireless data services, organizations can give employees access to enterprise data from just about anywhere. But for those tasked with choosing a service, it's a crowded field, with multiple technologies. In this package, we'll examine general broadband developments and see how wireless fits in; scrutinize specific technologies and their capabilities, including which operators are supporting which services; and suggest strategies for enterprise adoption.
First, the lexicon. If we define analog as 1G, digital cellular as 2G and enhanced 2G data offerings to about 100 Kbps as 2.5G, these new services are positioned as mobile broadband or third-generation cellular. They offer throughput rates from 200 Kbps to 500 Kbps, and eventually close to 1 Mbps--more than adequate for many applications. Although coverage is limited to a small number of metro areas, service will become more widely available across much of the United States next year. And because new devices support multiple networks, your users can fall back to slower (40 Kbps to 130 Kbps) but more accessible services as needed.
These offerings are from two technology families: CDMA 2000, used by Sprint and Verizon Wireless; and GSM/UMTS, including GPRS and EDGE, used by AT&T Wireless, Cingular Wireless and T-Mobile. We'll investigate these nationwide operators in "Survival of the Fittest" (http://www.nwc.com/showitem.jhtml?docid=1520f2), along with Nextel, which uses a proprietary technology called iDEN. Regional operators are using these technologies, too, and most have roaming agreements with the larger players. (Our cheat sheet which defines these terms and more.)
The landscape is further complicated by other technologies trying to leapfrog over cellular networks, many of them based on OFDM (Orthogonal Frequency Division Multiplexing), a radio technology also employed by IEEE 802.11a and IEEE 802.11g. Examples include Flarion's FLASH-OFDM and the high-visibility WiMAX, standardized as IEEE 802.16. Some Wi-Fi enthusiasts even dream of blanketing entire metro areas with 802.11 access points. These upstart ideas don't have support from major operators yet, but they could be a potent disruptive force (see "WiMAX and Beyond,").
We recently conducted a reader poll to gauge enterprise adoption of wireless WAN services. After tallying results from 638 respondents, the majority in organizations with revenue between $10 million and $1 billion, one finding stood out: Most still aren't familiar with these data services, especially compared with wireless LAN technologies, such as IEEE 802.11. The sheer number of offerings may be one reason. Plus not many use these data services yet.
As they move forward with 3G deployments, however, operators hope that wireless WANs will gain traction, and there are reasons to be optimistic. The higher speeds enable a wider range of applications. Meanwhile, nearly all enterprise software vendors, including IBM, Microsoft, Oracle and SAP, are adding features to make their applications work better over wireless connections. These features include caching information locally, compression, minimizing back and forth traffic, and sending only information that has changed. Add 3G capabilities, and enterprises might find the combination irresistible.
In this article
• Introduction
• Broadband: The Driver
• CDMA Flavors
• Is 4G Next?
• Executive Summary
• WiMAX and Beyond |
Either visit this link (http://www.nwc.com/showArticle.jhtml?articleID=49400833) for the whole article or view entire article in PDF format here!
3.7 MB
If the shoethrows fits...Ware Itout
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Osmium
(Stoni's sexual toy)
10-20-04 13:34
No 536788
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No shit.
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3G/CDMA2000/UMTS will finally arrive in the US. Good for those of you who really need it. Expensive toy for those who always want to own the latest gadgets. Can-do-without for pretty everyone else.
BUSH/CHENEY 2004! After all, it ain't my country!
www.american-buddha.com/addict.war.1.htm
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