Zte ZXG10 OB06, Technical Manual

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ZXG10 OB06 ZTE Integrated Outdoor GSM Base Station Technical Manual
58 Confidential and Proprietary Information of ZTE CORPORATION
2. Power control
The MS power control is shown in Figure 44.
F
I G U R E
4 4 M S P
O W E R
C
O N T R O L
MS LAPDm FURRM
HPIMan
LAPD
BSC OAMM
(M S POWER
CONTROL)
DL _DATA_ IND (M S
POWER CONTROL)
M PH _RRCm dToCHP
(CHP SET M S
POWER)
The BSC sets the MS power control parameters according to the TRX
requirement.
The initial parameters are set in the CHAN ACTIV message by the BSC.
If these parameters are to be changed, the BSC will send the MS
POWER CONTROL message to the TRX.
The OB06 power control is optional, which is indicated by the
parameters in the MS POWER CONTROL or CHAN ACTIV message. By
changing the frame header of the power level L1 that is sent to the MS,
the TRX tries to control the power control parameter within certain
range according to the message requirement (the CHP module
implements this operation).
When the OB06 executes the MS power control, the BSC can change
the MS power parameter during the connection (change by levels, for
example).
The MS POWER CONTROL and CHAN ACTIV messages must contain an
MS-allowed maximum power value.
The procedure of BS power control executed by the BSC is shown in
Figure 45.
F
I G U R E
4 5 B S P
O W E R
C
O N T R O L
MS LAPDm FURRM
HPIMan
LAPD
BSC OAMM
(BS POWER
CONTROL)
DL_ DATA_IND (BS
POWER CONTROL)
M PH_RRC m dTo
CHP(CHP SET
BS POWER)
This optional procedure can have the BSC set the TRX transmission
power level or the parameter that the TRX uses to control the TRX
transmission power.
The initial parameters are set in the CHAN ACTIV message by the BSC.
If these parameters are to be changed, the BSC will send the BS
POWER CONTROL message to the TRX.