11.2.9c Packet Mobile TBF Status

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 from the mobile station to the network on the uplink PACCH to indicate erroneous messages have been received relating to either a downlink or an uplink TBF.

Message type: PACKET MOBILE TBF STATUS

Direction: mobile station to network

Table 11.2.9c.1: Packet MOBILE TBF STATUS information elements

< Packet Mobile TBF Status message content > ::=

< GLOBAL TFI : < Global TFI IE > >

< TBF_CAUSE : bit (3) >

{ 0 | 1 < STATUS_MESSAGE_TYPE : bit (6) > }

< padding bits > ;

Table 11.2.9c.2: Packet MOBILE TBF STATUS information element details

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.

TBF_CAUSE (3 bit field)
The TBF_CAUSE field indicates the error cause value of the current TBF. This field is encoded according to the following table:

Bit
3 2 1
0 0 0 Normal event;
0 0 1 Status, unspecified;
0 1 0 Syntactically incorrect message, non-distribution part error;
0 1 1 Syntactically incorrect message, message escape;
1 0 0 Message not compatible with current protocol state.
All other values are reserved and may be interpreted "Status, unspecified".

STATUS_MESSAGE_TYPE (6 bit field)
The STATUS_MESSAGE_TYPE field, if present, is the binary representation of the message type of the downlink RLC/MAC control message that caused the status condition. Message type values are defined in sub-clause 11.2.0.1.