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 受无痕妹鼓励，再发散一把，请问通信行业的朋友， |
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受无痕妹鼓励，再发散一把，请问通信行业的朋友， -- 游客 - (680 Byte) 2003-10-30 周四, 07:23 (1409 reads) |
阿基里斯
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头衔: 海归中将
声望: 教授
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加入时间: 2004/02/22
文章: 3846
来自: from Aegean Sea to Pacific Ocean
海归分: 754343
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作者：阿基里斯 在 海归商务 发贴, 来自【海归网】 http://www.haiguinet.com
From technical point of view, 3G data over GPRS/EDGE, or cdma2000 (1x and 1xEV-DO), or UMTS (to be commercially launched in Europe soon) cellular networks are more advantageous, in terms of system capacity, data security and coverage/roaming. In terms of economy, this also translates into higher revenue to wireless carriers or service providers.
However, WLAN (based on 802.11a/b/g standard) is rapidly gaining popularity, both in residential and commercial environments. It has limited mobility (with hotspot typically covering an area about 200 ft in radius), but has high bandwidth (11Mbps to 55Mbps).
Recently, Verizon Wireless starts providing WLAN services in some limited areas (just at about the same time they annouced the commercial 1xEV-DO service in metropolian areas of San Diego, CA and Washington DC). That's an interesting trend.
I have a laptop with built-in 802.11b adaptor, and use it extensively both in the office and at home (Cable Modem + WLAN hub). Now I'm so used to it that I will feel very uncomfortable without it.
作者：阿基里斯 在 海归商务 发贴, 来自【海归网】 http://www.haiguinet.com
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 受无痕妹鼓励，再发散一把，请问通信行业的朋友， -- 完颜洪烈 - (680 Byte) 2003-10-30 周四, 07:23 (1409 reads) - DSL -- nyguy - (226 Byte) 2003-10-31 周五, 06:02 (313 reads)
- #1: 802.11a/b/g WLAN vs GPRS/EDGE/CDMA2000/UMTS -- 阿基里斯 - (2114 Byte) 2003-10-30 周四, 10:15 (316 reads)
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