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User Manual
Airbridge cBTS3612 CDMA Base Station
cBTS3612 is located between the Base Station Controller (BSC) and the Mobile
Station (MS) in the cdma2000 1X mobile communication system.
Under the control of the BSC, the cBTS3612 serves as the wireless transceiving
equipment of one cell or multiple logical sectors. Connecting to BSC via the Abis
interface, it assists the BSC on the radio resource management, radio parameter
management and interface management. It also implements, via the Um interface,
the radio transmission between the BTS and the MS, as well as related control
functions.
cBTS3612 cabinet is shown in Figure 1-2.
Figure 1-2 cBTS3612 cabinet
cBTS3612 has the following functions:
I. Interface function
Um interface supports IS2000 Release A. It is fully compatible with IS -95A/B.
l
The physical layer supports a rate as high as 307.2kbit/s.
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Hard handoff, soft handoff and softer handoff are supported.
l
Quick forward power control, slow forward power control, quick reverse power
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control and reverse open-loop power control are available.
Baseband subrack
Fan subrack
Power subrack
RF subrack
CDU/RLDU subrack
RF subrack
1-2
System Description
1 System Overview
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