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ZTE Corporation ZXG-OB06 Manuale Utente

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Chapter 4 - System Functions 
Confidential and Proprietary Information of ZTE CORPORATION 47 
The procedure of transmitting a L3 transparent message from the MS is 
shown in Figure 32. 
F
I G U R E  
3 2
 
R
E C E I V I N G   A  
L 3   T
R A N S P A R E N T  
M
E S S A G E   I N   T H E  
N
O N
- A
C K N O W L E D G M E N T  
M
O D E
 
MS
LAPDm
FURRM
HPIMan
LAPD
BSC
OAMM
(UI fram es)
 Dm _DL _UNIT 
DATA_ IND
DL_ DATA_REQ
(UNIT  DATA IND )
(UNIT DATA IND ) 
 
The OB06 transfers to the BSC with the non-acknowledgment mode L3 
transparent message that is received from MS. 
UNIT DATA IND message contains the complete non-acknowledgment 
mode L3 transparent message. 
Dedicated Channel Management Function 
This function supports the following procedures: 
1.  Channel activation procedure: This procedure allows the BSC to make 
the OB06 activate a dedicated channel for an MS. When the channel is 
activated successfully, the MS is handed over to this channel through 
an assignment command or handover command. 
2.  Channel mode change procedure: This procedure allows the BSC to 
request the OB06 to change the mode of an activated channel. 
3.  Handover detection procedure: This procedure is used to check the 
access of a handed-over MS between the target OB06 and target BSC. 
4. Encryption start procedure: This procedure is used to start the 
encryption procedure specified in TS GSM 04.08. 
5. Measurement report procedure: It includes the mandatory basic 
measurement report procedure and the optional preprocessed 
measurement report procedure. These two procedures are used by the 
OB06 to report all the parameters related to the handover decisions to 
the BSC. 
6. SACCH deactivation procedure: This procedure allows the BSC to 
deactivate SACCH channels of the TRX according to the requirements 
of the channel release procedure in TS GSM 04.08. 
7.  Radio channel release procedure: This procedure allows the BSC to 
instruct the OB06 to release a radio channel that will not be used any 
longer. 
8.  MS power control procedure: This procedure allows the BSS to control 
the transmitting power of the MS related to a specific activated channel.