9.5 GPRS Session Management Messages

04.083GPPMobile radio interface Layer 3 specificationRelease 1998TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

9.5.1 Activate PDP context request

This message is sent by the MS to the network to request activation of a PDP context. See table 9.5.1/3GPP TS 04.08.

Message type: activate PDP context request

Significance: global

Direction: MS to network

Table 9.5.1/3GPP TS 04.08: Activate PDP context request message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	Activate PDP context request message identity	Message type 10.4	M	V	1
	Requested NSAPI	Network service access point identifier 10.5.6.2	M	V	1
	Requested LLC SAPI	LLC service access point identifier 10.5.6.9	M	V	1
	Requested QoS	Quality of service 10.5.6.5	M	LV	4
	Requested PDP address	Packet data protocol address 10.5.6.4	M	LV	3 – 19
28	Access point name	Access point name 10.5.6.1	O	TLV	3 – 102
27	Protocol configuration options	Protocol configuration options 10.5.6.3	O	TLV	3 – 253

9.5.1.1 Access point name

This IE is included in the message when the MS selects a specific external network to be connected to.

9.5.1.2 Protocol configuration options

This IE is included in the message when the MS provides protocol configuration options for the external PDN.

9.5.2 Activate PDP context accept

This message is sent by the network to the MS to acknowledge activation of a PDP context. See table 9.5.2/3GPP TS 04.08.

Message type: activate PDP context accept

Significance: global

Direction: network to MS

Table 9.5.2/3GPP TS 04.08: Activate PDP context Accept message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	Activate PDP context accept message identity	Message type 10.4	M	V	1
	Negotiated LLC SAPI	LLC service access point identifier 10.5.6.9	M	V	1
	Negotiated QoS	Quality of service 10.5.6.5	M	LV	4
	Radio priority	Radio priority 10.5.7.2	M	V	1/2
	Spare half octet	Spare half octet 10.5.1.8	M	V	1/2
2B	PDP address	Packet data protocol address 10.5.6.4	O	TLV	4 – 20
27	Protocol configuration options	Protocol configuration options 10.5.6.3	O	TLV	3 – 253

9.5.2.1 PDP address

If the MS did not request a static address in the corresponding ACTIVATE PDP CONTEXT REQUEST message, the network shall include the PDP address IE in this Activate PDP context Accept message.

If the MS requested a static address in the corresponding ACTIVATE PDP CONTEXT REQUEST message, the network shall not include the PDP address IE in this Activate PDP context Accept message.

9.5.2.2 Protocol configuration options

This IE is included in the message when the network wishes to transmit protocol configuration options for the external PDN.

9.5.3 Activate PDP context reject

This message is sent by the network to the MS to reject activation of a PDP context. See table 9.5.3/3GPP TS 04.08.

Message type: activate PDP context reject

Significance: global

Direction: network to MS

Table 9.5.3/3GPP TS 04.08: Activate PDP context reject message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	Activate PDP context reject message identity	Message type 10.4	M	V	1
	SM cause	SM Cause 10.5.6.6	M	V	1
27	Protocol configuration options	Protocol configuration options 10.5.6.3	O	TLV	3 – 253

9.5.3.1 Protocol configuration options

The protocol configuration options IE may only be inserted by the network (see 3GPP TS 09.60) if the SM Cause indicates "activation rejected by GGSN".

9.5.4 Request PDP context activation

This message is sent by the network to the MS to initiate activation of a PDP context. See table 9.5.4/3GPP TS 04.08.

Message type: request PDP context activation

Significance: global

Direction: network to MS

Table 9.5.4/3GPP TS 04.08: request PDP context activation message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	Request PDP context activation message identity	Message type 10.4	M	V	1
	Offered PDP address	Packet data protocol address 10.5.6.4	M	LV	3 – 19
28	Access point name	Access point name 10.5.6.1	O	TLV	3 – 102

9.5.5 Request PDP context activation reject

This message is sent by the MS to the network to reject initiation of a PDP context activation. See table 9.5.5/3GPP TS 04.08.

Message type: request PDP context ACTIVATION reject

Significance: global

Direction: MS to network

Table 9.5.5/3GPP TS 04.08: request PDP context ACTIVATION reject message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	Request PDP context act. reject message identity	Message type 10.4	M	V	1
	SM cause	SM cause 10.5.6.6	M	V	1

9.5.6 Modify PDP context request

This message is sent by the network to the MS to request modification of an active PDP context. See table 9.5.6/3GPP TS 04.08.

Message type: modify PDP context request

Significance: global

Direction: network to MS

Table 9.5.6/3GPP TS 04.08: modify PDP context request message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	Modify PDP context request message identity	Message type 10.4	M	V	1
	Radio priority	Radio priority 10.5.7.2	M	V	1/2
	Spare half octet	Spare half octet 10.5.1.8	M	V	1/2
	Requested LLC SAPI	LLC service access point identifier 10.5.6.9	M	V	1
	New QoS	Quality of service 10.5.6.5	M	LV	4

9.5.7 Modify PDP context accept

This message is sent by the MS to the network to acknowledge the modification of an active PDP context. See table 9.5.7/3GPP TS 04.08.

Message type: modify PDP context accept

Significance: global

Direction: MS to network

Table 9.5.7/3GPP TS 04.08: modify PDP context accept message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	Modify PDP context accept message identity	Message type 10.4	M	V	1

9.5.8 Deactivate PDP context request

This message is sent to request deactivation of an active PDP context. See table 9.5.8/3GPP TS 04.08.

Message type: deactivate PDP context request

Significance: global

Direction: both

Table 9.5.8/3GPP TS 04.08: deactivate PDP context request message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	Deactivate PDP context request message identity	Message type 10.4	M	V	1
	SM cause	SM cause 10.5.6.6	M	V	1

9.5.9 Deactivate PDP context accept

This message is sent to acknowledge deactivation of the PDP context requested in the corresponding Deactivate PDP context request message. See table 9.5.9/3GPP TS 04.08.

Message type: deactivate PDP context accept

Significance: global

Direction: both

Table 9.5.9/3GPP TS 04.08: deactivate PDP context accept message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	Deactivate PDP context accept message identity	Message type 10.4	M	V	1

9.5.10 Activate AA PDP context request

This message is sent by the MS to the network to initiate activation of an AA PDP context. See table 9.5.10/3GPP TS 04.08.

Message type: Activate AA PDP context Request

Significance: global

Direction: MS to network

Table 9.5.10/3GPP TS 04.08: Activate AA PDP context request message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	Activate AA PDP context request message identity	Message type 10.4	M	V	1
	Requested NSAPI	Network service access point identifier 10.5.6.2	M	V	1
	Requested LLC SAPI	LLC service access point identifier 10.5.6.9	M	V	1
	Requested QoS	Quality of service 10.5.6. 5	M	LV	4
	Requested packet data protocol address	Packet data protocol address 10.5.6.4	M	LV	3 – 19
28	Access point name	Access point name 10.5.6.1	O	TLV	3 – 102
27	Protocol configuration options	Protocol configuration options 10.5.6.3	O	TLV	3 – 253
29	Requested AA-READY timer value	GPRS Timer 10.5.7.3	O	TV	2

9.5.10.1 Access point name

This IE is included in the message when the MS selects a specific external network to be connected to.

9.5.10.2 Protocol configuration options

This IE is included in the message when the MS provides protocol configuration options for the external PDN.

9.5.10.3 Requested AA-READY timer value

This IE may be included if the MS wants to indicate a preferred value for the AA-READY timer.

9.5.11 Activate AA PDP context accept

This message is sent by the network to the MS to acknowledge the activation of an AA PDP context. See table 9.5.11/3GPP TS 04.08.

Message type: Activate AA PDP context Accept

Significance: global

Direction: network to MS

Table 9.5.11/3GPP TS 04.08: Activate AA PDP context Accept message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	Activate AA PDP context accept message identity	Message type 10.4	M	V	1
	Negotiated LLC SAPI	LLC service access point identifier 10.5.6.9	M	V	1
	Negotiated QoS	Quality of service 10.5.6.5	M	LV	4
	Allocated P-TMSI	Mobile identity 10.5.1.4	M	LV	6
	Packet data protocol address	Packet data protocol address 10.5.6.4	M	LV	3 – 19
	Radio priority	Radio priority 10.5.7.2	M	V	1/2
	Spare half octet	Spare half octet 10.5.1.8	M	V	1/2
27	Protocol configuration options	Protocol configuration options 10.5.6.3	O	TLV	3 – 253
29	Negotiated AA-Ready timer value	GPRS Timer 10.5.7.3	O	TV	2

9.5.11.1 Protocol configuration options

This IE may be included if the network wishes to transmit protocol configuration options from the external PDN.

9.5.11.2 Negotiated AA-Ready timer value

This IE may be included if the network wants to indicate a value for the AA-READY timer.

9.5.12 Activate AA PDP context reject

This message is sent by the network to the MS to reject the activation of an AA PDP context. See table 9.5.12/3GPP TS 04.08.

Message type: Activate AA PDP context REJECT

Significance: global

Direction: network to MS

Table 9.5.12/3GPP TS 04.08: Activate AA PDP context REJECT message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	Activate AA PDP context reject message identity	Message type 10.4	M	V	1
	SM Cause	SM Cause 10.5.6.6	M	V	1
27	Protocol configuration options	Protocol configuration options 10.5.6.3	O	TLV	3 – 253

9.5.12.1 Protocol configuration options

The protocol configuration options IE may only be inserted by the network (see 3GPP TS 09.60) if the SM Cause indicates "activation rejected by GGSN".

9.5.13 Deactivate AA PDP context request

This message is sent to request deactivation of an active AA PDP context. See table 9.5.13/3GPP TS 04.08.

Message type: deactivate AA PDP context request

Significance: global

Direction: network to MS

Table 9.5.13/3GPP TS 04.08: deactivate AA PDP context request message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	Deactivate AA PDP context request message identity	Message type 10.4	M	V	1
	AA deactivation cause	AA deactivation cause 10.5.6.8	M	V	1/2
	Spare half octet	Spare half octet 10.5.1.8	M	V	1/2

9.5.14 Deactivate AA PDP context accept

This message is sent to acknowledge deactivation of an AA PDP context requested by the corresponding Deactivate AA PDP context request message. See table 9.5.14/3GPP TS 04.08.

Message type: deactivate AA PDP context accept

Significance: global

Direction: MS to network

Table 9.5.14/3GPP TS 04.08: deactivate AA PDP context accept message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	Deactivate AA PDP context accept message identity	Message type 10.4	M	V	1

9.5.15 SM Status

This message is sent by the network or the MS to pass information on the status of the indicated context and report certain error conditions (eg. as listed in sub-clause 8). See table 9.5.15/3GPP TS 04.08.

Message type: SM Status

Significance: local

Direction: both

Table 9.5.15/3GPP TS 04.08: SM STATUS message content

IEI	Information Element	Type/Reference	Presence	Format	Length
	Protocol discriminator	Protocol discriminator 10.2	M	V	1/2
	Transaction identifier	Transaction identifier 10.3.2	M	V	1/2
	SM Status message identity	Message type 10.4	M	V	1
	SM Cause	SM Cause 10.5.6.6	M	V	1