Base Station Power Control - Ericsson CME 20 R6.1 Reference Manual

9

Base Station Power Control

This document covers power regulation by means of the
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.
9.1 References
/GSM:05.02/
/GSM:05.05/
/GSM:05.08/
/GSM:08.58/
Whenever a reference is made to a function described in another chapter,
please refer to the table of contents to find the appropriate chapter.
9.2 Concepts
Nominal Power
9.3 Functions
9.3.1 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.
The RBS supports:
•
•
•
Supported Channel Numbers /GSM:08.58:9.3.1/:
•
•
•
•
Supported Channel combinations /GSM:05.02:6.4/:
•
•
EN/LZT 123 2697 R5A
1998-08-13
Interpretation of the BS Power information element in the
CHANNEL ACTIVATION message from BSC
Storage of BS Power
Adjustment of BS Power level
Bm + ACCHs
Lm + ACCHs
SDCCH/8 + ACCH
SDCCH/4 + ACCH
(i) TCH/F + FACCH/F + SACCH/TF
(ii) TCH/H(0,1) + FACCH/H(0,1) + SACCH/TH(0,1)
© Ericsson Radio Systems AB
— All Rights Reserved —
Base Station Power Control
GSM 05.02 (phase 2) version 4.3.0
GSM 05.05 (phase 2) version 4.6.0
GSM 05.08 (phase 2) version 4.6.0
GSM 08.58 (phase 2) version 4.2.0
The power level defined during
configuration of the RBS TRXs.
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