9 List of system parameters

24.2443GPPRelease 17Stage 3TSWireless LAN control plane protocol for trusted WLAN access to EPC

9.1 Timers

Table 9.1.1: WLCP timers – UE side

TIMER

TIMER VALUE

STATE

CAUSE OF START

NORMAL STOP

ON THE
1st, 2nd, 3rd, 4th EXPIRY (NOTE 1)

T3582

8s

PROCEDURE TRANSACTION PENDING

PDN CONNECTIVITY REQUEST sent

PDN CONNECTIVITY ACCEPT received or PDN CONNECTIVITY REJECT received

Retransmission of the same message

T3592

6s

PROCEDURE TRANSACTION PENDING

PDN DISCONNECT REQUEST sent

PDN DISCONNECT ACCEPT received or PDN DISCONNECT REJECT received

Retransmission of the same message

Tw1

NOTE 2

PDN CONNECTIVITY PENDING or SCM_RESPONSE (defined in 3GPP TS 24.302 [3]) reception

PDN CONNECTIVITY REJECT with a timer value for Tw1 received, SCM_RESPONSE (defined in 3GPP TS 24.302 [3]) with a timer value for Tw1 received

PDN DISCONNECT REQUEST with cause #39 "reactivation requested"

None

T3586

8s

PROCEDURE TRANSACTION PENDING

PDN MODIFICATION REQUEST sent

PDN MODIFICATION ACCEPT received or PDN MODIFICATION REJECT received

Retransmission of the same message

NOTE 1: Typically, the procedures are aborted on the fifth expiry of the relevant timer. Exceptions are described in the corresponding procedure description.

NOTE 2: The value of this timer can be provided by the network operator when a request to activate a PDN connection is rejected by the network with a certain cause or when a request to activate a PDN connection in single-connection mode (defined in 3GPP TS 24.302 [3]) is rejected by the network with a certain cause.

Table 9.1.2: WLCP timers – TWAG side

TIMER

TIMER VALUE

STATE

CAUSE OF START

NORMAL STOP

ON THE
1st, 2nd, 3rd, 4th EXPIRY (NOTE 1)

T3585

8s

PDN CONNECTIVITY PENDING

PROCEDURE TRANSACTION PENDING

PDN CONNECTIVITY ACCEPT sent

PDN CONNECTIVITY COMPLETE received

or PDN CONNECTIVITY REJECT received

Retransmission of the same message

T3595

8s

PDN DISCONNECT PENDING

PROCEDURE TRANSACTION PENDING

PDN DISCONNECT REQUEST sent

PDN DISCONNECT ACCEPT received

Retransmission of the same message

T3586

8s

PROCEDURE TRANSACTION PENDING

PDN MODIFICATION REQUEST sent

PDN MODIFICATION ACCEPT received or PDN MODIFICATION REJECT received

Retransmission of the same message

T3587

8s

WLCP BEARER CONTEXT ACTIVE PENDING

WLCP BEARER SETUP REQUEST sent

WLCP BEARER SETUP ACCEPT received or WLCP BEARER SETUP REJECT received

Retransmission of the same message

T3588

8s

WLCP BEARER CONTEXT MODIFY PENDING

WLCP BEARER MODIFY REQUEST sent

WLCP BEARER MODIFY ACCEPT received or WLCP BEARER MODIFY REJECT received

Retransmission of the same message

T3597

8s

WLCP BEARER CONTEXT INACTIVE PENDING

WLCP BEARER RELEASE REQUEST sent

WLCP BEARER RELEASE ACCEPT received or or WLCP BEARER RELEASE REJECT received

Retransmission of the same message

NOTE 1: Typically, the procedures are aborted on the fifth expiry of the relevant timer. Exceptions are described in the corresponding procedure description.

Annex A (informative):
Cause values for WLCP protocol