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Copyright(c)2007 Nikkei Business Publications, Inc. All Rights Reserved. All editorial content and graphics on this Web site may not be reproduced in whole or in part without the express permission of the copyright owner. |
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Nikkei Network |
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November 2007
Beginners’ Question How long is 11n wireless LAN going to remain a draft technology? FEATURE 2 Ultra-Small Base Stations Are Changing Mobile Phones What on Earth Are Femtocells? A communications area of 10 meters in diameter… “Femtocells” which are access point base stations that users can set up according to their needs are attracting notice in the mobile phone world. The size of a base station for a femtocell is virtually no bigger than that of a broadband router. Mobile phone areas can be expanded by simply connecting them to a broadband line such as FTTH. We pinpoint the nature of femtocells using a Q&A format. Q1: So what are femtocells exactly?" Q2: What is the difference from existing mobile phones? Q3: Is it OK to connect via the Internet? Q4: Can you carry a base station around to use it? Q5: Won’t they interfere with existing base stations? Q6: Is there any change in the way you can use the terminal? Q7: How do you access voluntary sites? FEATURE 3 Learning Network Infrastructure in Charts RIP (Routing Information Protocol) Routers exchange information among themselves and decide on the transmission routing of IP packets |
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