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Broadcast Information 2 (SACCH FILL) Change
Procedure
The broadcast information 2 (SACCH FILL) change procedure is shown in
Figure 55.
F
5 5 B
I G U R E
R O A D C A S T
MS
LAPDm
(SYS INFO TYPE 5/6 /5bis )
The BSC indicates to the OB06 that the new system information ((RR)
System Information Type 5/6/5bis/5ter) will be sent in the downlink
SACCH as fill-in information, generally when channel connection starts
(especially after a handover) and the channel changes.
When the FURRM receives the SACCH FILL message, it extracts the
information unit and sends it to the CHP module for the system message
transmission. If it does not receive the message, it indicates that the
system message sending will stop.
The System Information Type 5 contains the adjacent cell BCCH frequency
table. The System Information Type 5bis and System Information Type
5ter contain adjacent cell BCCH extended configuration information. The
System Information Type 6 contains the location area ID and cell ID.
When the fill-in information uploaded in the SACCH needs to be changed,
the BSC will send a SACCH INFO MODIFY message to the OB06. The
SACCH fill-in information in this message will be transmitted in the
specified channel, till the channel is released or changed by another
SACCH INFO MODIFY message.
TRX Management Function
This function supports the following procedures:
1. Radio resource indication procedure: With this procedure, the OB06
gives the BSC an indication of interference level on the idle dedicated
channel of each TRX.
2. Traffic control procedure: With this procedure, the FUC gives the BSC
an indication about the overload of this TRX. The overload cause may
be CCCH overload, ACCCH overload or processor overload.
3. Error report procedure: With this procedure, the OB06 reports to the
BSC the detected downlink message error that cannot be reported with
other procedures.
I
2 ( S AC C H F I L L ) C
N F O R M A T I O N
HPIMan
FURRM
DL_ DATA_IND (SACCH FILL)
M PH_
RRCm dToCHP (CHP
SET/STOP SACCH
FILL )
Confidential and Proprietary Information of ZTE CORPORATION
Chapter 4 - System Functions
P
H A N G E
R O C E D U R E
BSC
OAMM
LAPD
(SACCH FILL)
65
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