Motorola V3-Razor Repair Manual page 5

G SM , G SM ,
BTS
B TS
Area divided up into Cells each with its own Base Transceiver station
(BTS) which operates on its own set of frequencies
The BTS are controlled by their own BSC (Base station controller) which
can control multiple BTS
The BSCis connected to the MSC (usually by land line) so the digital over
air connection is from the Mobile to the BTS, the link from the BTS to the
BSC can also be by land line.
MSC : Mobile Switching Centre acts as the interface to the PSTN.
GSM , GSM ,
3 cell repeat: possible in GSM due to higher tolerance to
cross channel interference. digital timing specs etc.
Other patterns apply,
Document –ED05020 rev.1.0
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V3-Razor Repair Manual
Basic Cellular System Basic Cellular System
M S C
M S C
B S C
B S C
B TS B TS
B TS B TS
Basic Cellular System
Basic Cellular System
1 1
1 1
2
2
3
3 3 3
1 1
2
2
2 2
3
3
Page 4
P S TN
P S TN
3 Cell repeat pattern
3 Cell repeat pattern
Only possible in G SM due to
Only possible in G SM due to
higher cross channel interference higher cross channel interference
tolerances
tolerances