ZTE Corporation ZXG-OB06 Manuale Utente
Chapter 4 - System Functions
Confidential and Proprietary Information of ZTE CORPORATION 59
The OB06 power control is optional, which is indicated by the
parameters in the BS POWER CONTROL or CHAN ACTIV message. By
changing the transmission power, the TRX tries to control the power
changing the transmission power, the TRX tries to control the power
control parameter within a certain range according to the message
requirement (the CHP module implements this operation).
The maximum power of the TRX is determined by the network design
requirement (the CHP module implements this operation).
The maximum power of the TRX is determined by the network design
specifications, but the BSC can specify a smaller maximum power
value in the BS POWER CONTROL and CHAN ACTIV messages.
value in the BS POWER CONTROL and CHAN ACTIV messages.
3. Physical environment request/acknowledgement
The procedure of physical environment request/acknowledgement is
shown in Figure 46.
F
I G U R E
4 6
P
H Y S I C A L
E
N V I R O N M E N T
R
E Q U E S T
/ A
C K N O W L E D G E M E N T
MS
LAPDm
FURRM
HPIMan
LAPD
BSC
OAMM
DL _ DATA _IND (PHYS
CONTEXT REQ )
(PHYS
CON- TEXT
REQ)
DL_DATA _REQ (PHYS
CONTEXT CONF)
(PHYS
CON- TEXT
CONF)
This optional procedure enables the BSC to obtain the physical
environment information before the channel change.
The physical environment information can be sent to a new TRX (which
may be in another cell).
The PHY CONTEXT CONF message to be returned by the OB06 to the
BSC contains the MS/BS power and TA that are obtained from the
The physical environment information can be sent to a new TRX (which
may be in another cell).
The PHY CONTEXT CONF message to be returned by the OB06 to the
BSC contains the MS/BS power and TA that are obtained from the
channel, and the OB06 does not process the physical environment
information temporarily.
information temporarily.
4. SACCH fill-in information change
The procedure of modifying the SACCH fill-in information is shown in
Figure 47.
F
I G U R E
4 7
S A C C H F
I L L
-
I N
I
N F O R M A T I O N
C
H A N G E
MS
LAPDm
FURRM
HPIMan
LAPD
BSC
OAMM
DL_ DATA_ IND (SACCH
INFO M ODIFY)
(SACCH INFO
M ODIFY)
M PH_RRCm dToCHP
(CHP SET/ STOP
SACCH INFO )
SACCH INFO )
(SYS INFO TYPE
5/6 /5bis / 5ter)
The BSC instructs the OB06 that the new system message ((RR)
System Information Type 5/5bis/5ter/6) will change the original
System Information Type 5/5bis/5ter/6) will change the original
system message that is filled in the SACCH.