May 2005
Intermediate to advanced
312 pages
10h 29m
English
Content preview from Mobile IP Technology and Applications
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Mobile IP and Public Access Networks 213
Figure 9-3 cdma2000 Relay Mode
GSM Technology
GSM is a digital cellular radio standard, the most popular in the world, that uses time division
multiplex access (TDMA). TDMA divides a radio frequency into time slots that are assigned to
support multiple simultaneous users. For an analogy of GSM, we can bring back the
overcrowded restaurant. This time, each person gets to say only one word at a time, with
everyone taking a turn. Those who don’t have anything to say remain silent. After the last
person speaks, the next word can be conveyed, and this cycle repeats. The listener knows the
sequence and therefore ...
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