Access Burst Power Control

Access Burst Power Control

Last updated: December 3, 2008

The test set allows you to control two parameters broadcast on the BCCH which are associated with the power of mobile station access bursts:

MS TX Power Max CCH (GSM)

The value of this parameter is the maximum transmit power level that may be used by the mobile station for its next access burst on the broadcast channel. See CALL[:CELL]:BCHannel:MS:TXLevel[:SELected] for more information about this parameter.

MS TX Power Max CCH (GPRS)

The value of this parameter is the maximum transmit power level that may be used by the mobile station for its next access burst on the packet broadcast control channel. See CALL[:CELL]:(PBCCH|PBCChannel):MS:TXLevel[:SELected] for more information about this parameter.

MS TX Power Max CCH DCS1800 Offset

The value of this parameter corresponds to a power offset used by class 3 DCS1800 mobile stations. Mobile stations prior to class 3 do not support power levels 29-31. Therefore, for DCS 1800, the power control levels 29, 30, and 31 are not valid values for the MS TX Power Max CCH (GSM or GPRS) parameter to ensure backwards compatitibility. However, class 3 mobile stations do support the extended power range. The DCS1800 Max CCH Power Offset is provided for procedures where a class 3 DCS 1800 mobile stations should use its extended power range.

A class 3 DCS 1800 mobile station shall use the power level defined in the MS TX Power Max CCH (GSM or GPRS) parameter plus the value of the power offset. As illustrated in the following table, when the MS TX Power Max CCH's value is 0, setting the Power Offset value to 1,2, or 3 can be used to achieve output power corresponding to power levels 31, 30, and 29 respectively.

Power Offset Parameter Values
Value Offset Power Control Level Maximum Output Power
0 0 dB 0 30 dBm
1 2 dB 31 32 dBm
2 4 dB 30 34 dBm
3 6 dB 29 36 dBm

Related Topics


How to Configure Access Burst Power Control

How to Configure Access Burst Power Control for DCS

CALL[:CELL]:MS:TXLevel:CCHannel[:SELected]

CALL[:CELL]:MS:CCHannel:POWer:OFFSet:DCS