Zte ZXG10-OB06, Техническое руководство

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Chapter 4 - System Functions
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BSC sets the initial parameters in the CHAN ACTIV message. If these
parameters are to be changed, the BSC sends the BS POWER
CONTROL message to the TRX.
The parameters in the BS POWER CONTROL and CHAN ACTIV message
indicate the optional OB06 power control. According to the message
requirement, TRX tries to control the power control parameter within a
certain range, by changing the transmission power. The CHP module
implements this operation.
The network design specifications determine the maximum power of
TRX. However, BSC can specify a smaller maximum power value in the
BS POWER CONTROL and CHAN ACTIV messages.
• Physical environment request/acknowledgment
Figure 46 shows the physical environment request/acknowledgment
procedure.
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 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 BSC to obtain physical environment
information before the channel change.
It may send physical environment information to a new TRX (which
may be in another cell).
OB06 return the PHY CONTEXT CONF message to BSC containing the
MS/BTS power and TA. OB06 does not process the physical
environment information temporarily.