12.13 Power Control Parameters

3GPP44.060General Packet Radio Service (GPRS)Mobile Station (MS) - Base Station System (BSS) interfaceRadio Link Control / Medium Access Control (RLC/MAC) protocolRelease 17TS

The Power Control Parameters information element contains parameters the mobile station shall use to determine its TX power level.

Table 12.13.1: Power Control Parameters information elements

< Power Control Parameters IE > ::=

< ALPHA : bit (4) >

{ 0 | 1 < GAMMA_TN0 : bit (5) > }

{ 0 | 1 < GAMMA_TN1 : bit (5) > }

{ 0 | 1 < GAMMA_TN2 : bit (5) > }

{ 0 | 1 < GAMMA_TN3 : bit (5) > }

{ 0 | 1 < GAMMA_TN4 : bit (5) > }

{ 0 | 1 < GAMMA_TN5 : bit (5) > }

{ 0 | 1 < GAMMA_TN6 : bit (5) > }

{ 0 | 1 < GAMMA_TN7 : bit (5) > } ;

Table 12.13.2: Power Control Parameters information element details

ALPHA (4 bit field)
For encoding and description see the Global Power Control Parameters IE.

GAMMA_TN0 (5 bit field)
GAMMA_TN1 (5 bit field)
GAMMA_TN2 (5 bit field)
GAMMA_TN3 (5 bit field)
GAMMA_TN4 (5 bit field)
GAMMA_TN5 (5 bit field)
GAMMA_TN6 (5 bit field)
GAMMA_TN7 (5 bit field)
The GAMMA_TN0..7 fields are the binary representation of the parameter GCH for MS output power control in units of 2 dB, see 3GPP TS 45.008. GAMMA_TN0 contains the gamma value for timeslot number 0, GAMMA_TN1 contains the gamma value for timeslot number 1, etc. The GAMMA_TN0..7 field is coded according to the following table:

bit
5 4 3 2 1
0 0 0 0 0 GCH = 0 dB
0 0 0 0 1 GCH = 2 dB
: : : :
1 1 1 1 0 GCH = 60 dB
1 1 1 1 1 GCH = 62 dB