EPS session management timers – UE side
|
TIMER NUM. |
TIMER VALUE |
STATE |
CAUSE OF START |
NORMAL STOP |
ON THE |
|
T3480 |
8s In WB-S1/CE mode, 16s |
PROCEDURE TRANSACTION PENDING |
BEARER RESOURCE ALLOCATION REQUEST sent |
ACTIVATE DEDICATED EPS BEARER CONTEXT REQUEST received or MODIFY
EPS BEARER CONTEXT REQUEST received or BEARER RESOURCE ALLOCATION REJECT
received |
Retransmission of BEARER RESOURCE ALLOCATION REQUEST |
|
T3481 |
8s In WB-S1/CE mode, 16s |
PROCEDURE TRANSACTION PENDING |
BEARER RESOURCE MODIFICATION REQUEST sent |
ACTIVATE DEDICATED EPS BEARER CONTEXT REQUEST received or MODIFY
EPS BEARER CONTEXT REQUEST received or DEACTIVATE EPS BEARER CONTEXT REQUEST
received or BEARER RESOURCE MODIFICATION REJECT received |
Retransmission of BEARER RESOURCE MODIFICATION REQUEST |
|
T3482 |
8s In WB-S1/CE mode, 16s |
PROCEDURE TRANSACTION PENDING |
An additional PDN connection is requested by the UE which is not
combined in attach procedure |
ACTIVE DEFAULT EPS BEARER CONTEXT REQUEST received or PDN
CONNECTIVITY REJECT received |
Retransmission of PDN CONNECTIVITY REQUEST |
|
T3492 |
6s In WB-S1/CE mode, 14s |
PROCEDURE TRANSACTION PENDING |
PDN DISCONNECT REQUEST sent |
DEACTIVATE EPS BEARER
CONTEXT REQUEST received or PDN DISCONNECT REJECT received |
Retransmission of PDN
DISCONNECT REQUEST |
|
T3493 |
4s In WB-S1/CE mode, 12s |
PROCEDURE TRANSACTION PENDING |
REMOTE UE REPORT sent |
REMOTE UE REPORT RESPONSE received |
Retransmission of REMOTE
UE REPORT |
|
Back-off timer |
|
|
defined in
3GPP TS 24.008 [13] |
|
|
|
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: In NB-S1
mode, then the timer value shall be calculated as described in subclause 4.7. NOTE 3: In WB-S1
mode, if the UE supports CE mode B and operates in either CE mode A or CE
mode B, then the timer value is as described in this table for the case of WB-S1/CE
mode (see subclause 4.8). |
|||||
NOTE 1: The back-off timer is used to describe a logical model
of the required UE behaviour. This model does not imply any specific
implementation, e.g. as a timer or timestamp.
NOTE 2: Reference
to back-off timer in this section can either refer to use of timer T3396 or to
use of a different packet system specific timer within the UE. Whether the UE
uses T3396 as a back-off timer or it uses different packet system specific
timers as back-off timers is left up to UE implementation.