7 Functions common to all configurations of the GPRS MS

07.603GPPGeneral Packet Radio Service (GPRS)Mobile Station (MS) supporting GPRSTS

7.1 Mobile Classes

Three GPRS MS classes are identified: Class A, B, and C. These classes are described in GSM 02.60.

7.2 Physical Interface

The physical interface between the TE and the MT may conform to CCITT/ITU-T V.24/V.28, or to IrDA IrPHY physical standard specification, or to PCMCIA PC-Card electrical specification. All signal levels and their operation shall be as specified in GSM 07.01, 07.02, and 07.03. This shall not preclude any new developments such as USB (Universal Serial Bus).

7.3 Terminal context procedures

This subclause describes the relationships for GPRS Attach and Detach, and PDP Context Activation and Deactivation. The procedures for these functions are described in GSM 03.60.

7.3.1 GPRS Attach

The GPRS Attach shall be performed prior to activating a PDP context. The GPRS Attach may be performed automatically or manually depending on the manufacturer’s implementation and configuration.

7.3.2 GPRS Detach

The GPRS Detach may be performed automatically or manually depending on the manufacturer’s implementation and configuration. The following cases are valid:

– if the connection between the TE and MT is broken then the MT may perform the GPRS Detach procedure;

– if the network originates a GPRS Detach the MT may inform the TE;

– if the radio connection is broken then the MT may inform the TE;

– if the TE deactivates the last PDP context then the MT may perform the GPRS Detach procedure.

7.3.3 Mobile Originated PDP Context Activation

The PDP Context Activation may be performed automatically or manually depending on the manufacturer’s implementation and configuration. Depending on the manufacturer’s implementation and configuration, 0, 1, or more PDP contexts can be active simultaneously.

7.3.4 Network Requested PDP Context Activation.

The network can request a GPRS attached MS to activate a specific PDP context.

7.3.5 PDP Context Deactivation

The PDP Deactivation may be performed automatically or manually depending on the manufacturer’s implementation and configuration. The following cases are valid:

– if the connection between the MT and the TE is broken then the MT may perform the PDP Context Deactivation procedure.

– if the radio connection is broken then the MT may inform the TE.

– if the TE deactivates the last PDP context then the MT may perform the GPRS Detach procedure.

7.3.6 PDP context related parameters

It shall be possible to enquire and/or set the following parameters:

– Requested Quality of Service.
(this includes the peak bit rate, the mean bit rate, the delay requirements, the service precedence, and the reliability level)

– Data Compression on or off.

– TCP/IP Header Compression on or off.

– PDP address

– PDP type

  • Access Point Name (APN)

– Protocol configuration options (if required by the PDP type)