Timer (EPS Mobile Management - UE Side)
Following table comes from 24.301 - 10.2 Timers of EPS mobility management (Table 10.2.1: EPS mobility management timers – UE side)
|
TIMER |
TIMER |
STATE |
CAUSE OF START |
NORMAL STOP |
ON |
| T3402 | Default
12 min. NOTE 1 |
EMM
DEREGISTERED EMM REGISTERED |
At
attach failure and the attempt counter is equal to 5. At tracking area updating failure and the attempt counter is equal to 5. |
ATTACH REQUEST sent TRACKING AREA UPDATE REQUEST sent | Initiation of the attach procedure or TAU procedure |
| T3410 | 15s | EMMREGISTEREDINITIATED | ATTACH REQUEST sent | ATTACH
ACCEPT received ATTACH REJECT received |
Start T3411 or T3402 as described in subclause 5.5.1.2.6 |
| T3411 | 10s | EMM
DEREGISTERED. ATTEMPTING TO-ATTACH EMM REGISTERED. ATTEMPTING TO-UPDATE |
At
attach failure due to lower layer failure, T3410 timeout or attach rejected with other EMM cause values than those treated in subclause 5.5.1.2.5. At tracking area updating failure due to lower layer failure, T3430 timeout or TAU rejected with other EMM cause values than those treated in subclause 5.5.3.2.5. |
ATTACH
REQUEST sent TRACKING AREA UPDATE REQUEST sent |
Retransmission of the ATTACH REQUEST or TRACKING AREA UPDATE REQUEST |
| T3412 | Default
54 min. NOTE 2 NOTE 5 |
EMM REGISTERED | In
EMM-REGISTERED, when EMM-CONNECTED mode is left. |
When
entering state EMM DEREGISTERED or when entering EMM-CONNECTED mode. |
Initiation of the periodic TAU procedure |
| T3416 | 30s |
EMM
REGISTERED INITIATED EMM-SERVICE REQUEST INITIATED |
RAND and RES stored as a result of a UMTS authentication challenge | SECURITY
MODE COMMAND received SERVICE REJECT received TRACKING AREA UPDATE ACCEPT received AUTHENTICATION REJECT received AUTHENTICATION FAILURE sent EMM DEREGISTERED or EMM-NULL entered |
Delete the stored RAND and RES |
| T3417 | 5s | EMM-SERVICEREQUESTINITIATED | SERVICE
REQUEST sent EXTENDED SERVICE REQUEST sent in case f and g in subclause 5.6.1.1 |
Bearers
have been set up SERVICE REJECT received |
Abort the procedure |
| T3417ext | 10s | EMM-SERVICEREQUESTINITIATED | EXTENDED
SERVICE REQUEST sent in case d in subclause 5.6.1.1 EXTENDED SERVICE REQUEST sent in case e in subclause 5.6.1.1 and the CSFB response was set to "CS fallback accepted by the UE" |
Inter-system
change from S1 mode to A/Gb mode or Iu mode is completed Inter-system change from S1 mode to A/Gb mode or Iu mode is failed SERVICE REJECT received |
Abort the procedure |
| T3418 | 20s | EMM
REGISTEREDINITIATED EMM REGISTERED EMM-TRACKINGARE AUPDATINGINITIATED EMM DEREGISTEREDINITIATED EMM-SERVICEREQUESTINITIATED |
AUTHENTICATION
FAILURE (EMM cause = #20 "MAC failure" or #26 "non-EPS authentication unacceptable") sent |
AUTHENTICATION REQUEST received | On first expiry, the UE should consider the network as false |
| T3420 | 15s | EMM
REGISTERED INITIATED EMM REGISTERED EMM DEREGISTERED INITIATED EMM-TRACKINGAREA UPDATING INITIATED EMM-SERVICE REQUEST INITIATED |
AUTHENTICATION FAILURE (cause = #21 "synch failure") sent | AUTHENTICATION REQUEST received | On first expiry, the UE should consider the network as false |
| T3421 | 15s | EMM DEREGISTERED INITIATED | DETACH REQUEST sent | DETACH ACCEPT received | Retransmission of DETACH REQUEST |
| T3423 | NOTE 3 | EMM REGISTERED | T3412
expires while the UE is in EMM-REGISTERED.NO-CELLAVAILABLE and ISR is activated. |
When
entering state EMM DEREGISTERED or when entering EMM-CONNECTED mode. |
Set TIN to "P-TMSI" |
| T3430 | 15s | EMM-TRACKING AREA UPDATING INITIATED | TRACKING
AREA UPDATE REQUEST sent |
TRACKING
AREA UPDATE ACCEPT received TRACKING AREA UPDATE REJECT received |
Start T3411 or T3402 as described in subclause 5.5.3.2.6 |
| T3440 | 10s | EMM
REGISTERED INITIATED EMM-TRACKING AREA UPDATING INITIATED EMM DEREGISTERED INITIATED EMM-SERVICE REQUEST INITIATED EMM REGISTERED |
ATTACH
REJECT, DETACH REQUEST, TRACKING AREA UPDATE REJECT with any of the EMM cause #11, #12, #13, #14 or #15 SERVICE REJECT received with any of the EMM cause #11,#12, #13 or #15 TRACKING AREA UPDATE ACCEPT received after the UE sent TRACKING AREA UPDATE REQUEST in EMMIDLE mode with no "active" flag |
Signalling
connection released Bearers have been set up |
Release
the signalling connection and proceed as described in subclause 5.3.1.2 |
| T3442 | NOTE 4 | EMM REGISTERED | SERVICE REJECT received with EMM cause #39 "CS domain temporarily not available" | TRACKING AREA UPDATE REQUEST sent | None |
| Note 1 | The default value of this timer is used if the network does not indicate another value in an EMM signalling procedure. | ||||
| Note 2 | The value of this timer is provided by the network operator during the attach and tracking area updating procedures. (This Timer value is set in Attach Accept message as well). | ||||
| Note 3 | The value of this timer may be provided by the network in the ATTACH ACCEPT message and TRACKING AREA UPDATE ACCEPT message. The default value of this timer is identical to the value of T3412. | ||||
| Note 4 | The value of this timer is provided by the network operator when a service request for CS fallback is rejected by the network with EMM cause #39 "CS domain temporarily not available". | ||||
| Note 5 |
The default value of this timer is used if the network does not indicate a value in the TRACKING AREA UPDATE ACCEPT message and the UE does not have a stored value for this timer. (This Timer value is set in Attach Accept message as well). |
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