11.2.13 Packet Power Control/Timing Advance

04.603GPPGeneral Packet Radio Service (GPRS)Mobile Station (MS) - Base Station System (BSS) interfaceRadio Link Control / Medium Access Control (RLC/MAC) protocolRelease 1999TS

This message is sent on PACCH by the network to the mobile station in order to update the mobile station timing advance or power control parameters.

Message type: PACKET POWER CONTROL/TIMING ADVANCE

Direction: network to mobile station

Classification: non-distribution message

Table 11.2.13.1: Packet POwer CONTROL/TIMING ADVANCE information elements

< Packet Power Control/Timing Advance message content > ::=

< PAGE_MODE : bit (2) >

{ { 0 < Global TFI : < Global TFI IE > >

| 110 < TQI : bit (16) >

| 111 < Packet Request Reference : < Packet Request Reference IE > > }

{ 0 — Message escape

{ { 0 | 1 < Global Power Control Parameters : < Global Power Control Parameters IE >> }

{ 0 < Global Packet Timing Advance : < Global Packet Timing Advance IE > >

< Power Control Parameters : < Power Control Parameters IE > >

| 1 { 0 < Global Packet Timing Advance : < Global Packet Timing Advance IE > >

| 1 < Power Control Parameters : < Power Control parameters IE > > } }

{ null | 0 bit** = < no string > — Receiver backward compatible with earlier version

| 1 — Additions for R99

{ 0 | 1 <Packet Extended Timing Advance : bit (2)> }

< padding bits > }

! < Non-distribution part error : bit (*) = < no string > > }

! < Message escape : 1 bit (*) = <no string> > }

! < Address information part error : bit (*) = < no string > > }

! < Distribution part error : bit (*) = < no string > > ;

Table 11.2.13.2: Packet POwer CONTROL/TIMING ADVANCE information element details

Global Power Control Parameters IE
This information field is defined in sub-clause 12.9.

Global_Packet Timing Advance IE
This information field is defined in sub-clause 12.12a.

Power Control Parameters IE
This information field is defined in sub-clause 12.13.

Global TFI IE
This information element contains the TFI of the mobile station’s downlink TBF or uplink TBF. This field is defined in sub-clause 12.10.

TQI (16 bit field)
This field is defined in sub-clause 12.17.

Packet Request Reference IE
This information element is defined in sub-clause 12.11.

Packet Extended Timing Advance (2 bit field)
This field is defined in sub-clause 12.12b.