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User Manual
Airbridge cBTS3612 CDMA Base Station
F-BCH (Forward Broadcast Channel)
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F-BCH is used by BTS to send the system information and necessarily broadcast
message (such as short message). F-BCH operates in discontinuous mode.
F-PCH (Forward Paging Channel)
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F-PCH is used by BTS to send the system information and MS-specific information
to MS.
Paging channel can be used to send the information with the fixed data rate of
9600bit/s or 4800bit/s. In a certain system (with the same system identification
number), all paging channels send the information with the same data rate.
The frame length of paging channel is 20ms. Each frequency of the sector can
support seven paging channels at most.
F-QPCH (Forward Quick Paging Channel)
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This is used to send paging order and the system configuration changing order to
MSs working in sub-timeslot mode, instructing them to receive the paging messages.
Thus the MS battery energy can be saved.
Quick paging channel can be divided into some 80ms timeslots. Each timeslot can
be divided into paging order and configuration changing order. The data rate that
can be supported is 9600bit/s or 4800bit/s.
&
Note:
In Figure 4-11, the channels in shadow will be supported in subsequent version.
2)
Reverse physical channel configuration
The configuration of reverse physical channel is shown in Figure 4-12.
4-19
System Description
4 System Function
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