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ZXG10-OB06 (V1.0) Integrated Outdoor GSM Base Station Technical Manual
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SACCH fill-in information change:
Figure 47 shows the procedure of modifying the SACCH fill-in
information.
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I G U R E
BSC instructs OB06 that the new system message ((RR) System
Information Type 5/5bis/5ter/6) changes the original system message
that the SACCH contains.
BSC sends the SACCH fill-in information in the SACCH INFO MODIFY
message in the specified channel. It continues to send information in
the same channel until the channel is released or changed by another
SACCH INFO MODIFY message.
When OB06 receives the SACCH INFO MODIFY message, it extracts the
system message ((RR) System Information Type 5/5bis/5ter/6). It
then sends it to the CHP module to change the original system
information. If there is no system message content, it indicates that
such system messages are no longer being sent on this channel.
Common Channel Management Function
This function supports the following procedures:
•
MS channel request procedure: It triggers when the TRX detects the
random access of MS.
•
Paging procedure: It is used for the called MS. It pages MS on the
specified paging sub-channel. It is started by MSC through BSC. BSC
determines the paging team according to the IMSI of the called MS.
The value of the paging team and the MS IMSI are sent to OB06.
•
Immediate assignment procedure: It allows BSC to immediately assign
a dedicated channel to MS that accesses OB06.
•
Indication deletion procedure: It allows OB06 to indicate BSC that an
immediate assignment message is deleted due to the overload on
AGCH channel.
•
CCCH load indication procedure: It allows OB06 to give BSC an
indication about the load on the specified CCCH channel.
•
Broadcast information change procedure: It allows BSC to instruct
OB06 to broadcast new system messages on the BCCH channel.
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