Ericsson Radio Systems AB PKRC1311004-1 Manual De Usuario
Base Station Power Control
22
Base Station Power Control
This document covers power regulation by means of the
CHANNEL_ACTIVATION and BS_POWER_CONTROL messages
from the BSC.
CHANNEL_ACTIVATION and BS_POWER_CONTROL messages
from the BSC.
The "Base Station Power Control" function is implemented to minimise
the transmit power required by the RBS TRXs (transceivers), while
maintaining the quality of the radio link.
the transmit power required by the RBS TRXs (transceivers), while
maintaining the quality of the radio link.
22.1
References
/GSM:05.02/
GSM 05.02 (phase 2) version 4.3.0
/GSM:05.05/
GSM 05.05 (phase 2) version 4.6.0
/GSM:05.08/
GSM 05.08 (phase 2) version 4.6.0
/GSM:08.58/
GSM 08.58 (phase 2) version 4.2.0
Whenever a reference is made to a function described in another chapter,
please refer to the table of contents to find the appropriate chapter.
please refer to the table of contents to find the appropriate chapter.
22.2
Concepts
Nominal Power
The power level defined during
configuration of the RBS TRXs.
configuration of the RBS TRXs.
22.3
Functions
22.3.1
Base Station Power Control at Channel Activation
By means of the TRANSMISSION POWER CONTROL procedure /
GSM:08.58:4.9/, the BSC defines the TRX (transceiver) transmission
power level.
GSM:08.58:4.9/, the BSC defines the TRX (transceiver) transmission
power level.
The RBS supports:
•
Interpretation of the BS Power information element in the
CHANNEL ACTIVATION message from BSC
CHANNEL ACTIVATION message from BSC
•
Storage of BS Power
•
Adjustment of BS Power level
Supported Channel Numbers /GSM:08.58:9.3.1/:
•
Bm + ACCHs
•
Lm + ACCHs
•
SDCCH/8 + ACCH
•
SDCCH/4 + ACCH
Supported Channel combinations /GSM:05.02:6.4/:
•
(i) TCH/F + FACCH/F + SACCH/TF
•
(ii) TCH/H(0.1) + FACCH/H(0.1) + SACCH/TH(0.1)
EN/LZT 720 0008
R1A
2001-06-26
217 (421)
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