EPS mobility management timers – UE side
|
TIMER NUM. |
TIMER VALUE |
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 ACCEPT with EMM cause #16 or #17 and the attempt counter
is equal to 5 for CS/PS mode 2 UE, or ATTACH ACCEPT with EMM cause #22, as
described in subclause 5.5.1.3.4.3. TRACKING AREA UPDATE ACCEPT with EMM cause #16 or #17 and the
attempt counter is equal to 5 for CS/PS mode 2 UE, TRACKING AREA UPDATE
ACCEPT with EMM cause #16 or #17 and the attempt counter is equal to 5 for
CS/PS mode 1 UE with "IMS voice
not available" and with a persistent EPS bearer context, or
TRACKING AREA UPDATE ACCEPT with EMM cause #22, as described in
subclause 5.5.3.3.4.3. ATTACH ACCEPT and the attempt counter is equal to 5 as described
in subclause 5.5.1.2.4A and 5.5.1.2.6A. TRACKING AREA UPDATE ACCEPT and the attempt counter is equal to
5 as described in subclause 5.5.3.2.4A and 5.5.3.2.6A. DETACH REQUEST with other EMM
cause values than those treated in subclause 5.5.2.3.2 or no EMM cause
IE and Detach type IE indicates "re-attach not required" as
described in subclause 5.5.2.3.4. |
ATTACH REQUEST sent TRACKING AREA UPDATE REQUEST sent NAS signalling connection released |
Initiation of the attach procedure, if still required or TAU
procedure |
|
T3410 |
15s In WB-S1/CE mode, 85s |
EMM-REGISTERED-INITIATED |
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 EMM-REGISTERED.
NORMAL-SERVICE |
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 ACCEPT and the attempt counter is less than 5 as
described in subclause 5.5.1.2.4A and 5.5.1.2.6A. TRACKING AREA UPDATE ACCEPT and the attempt counter is less
than 5 as described in subclause 5.5.3.2.4A and 5.5.3.2.6A. |
ATTACH REQUEST sent TRACKING AREA UPDATE REQUEST sent EMM-CONNECTED mode entered (NOTE 6) |
Retransmission of the ATTACH REQUEST, if still required as described in subclause 5.5.1.2.6
or retransmission of 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 if the UE is not attached for emergency bearer services or T3423 started under the conditions as
specified in subclause 5.3.5. Implicit detach from
network if the UE is attached for emergency bearer services. |
|
T3416 |
30s In WB-S1/CE mode, 48s |
EMM-REGISTERED-INITIATED EMM-REGISTERED EMM-DEREGISTERED-INITIATED EMM-TRACKING-AREA-UPDATING-INITIATED EMM-SERVICE-REQUEST-INITIATED |
RAND and RES stored as a result of an EPS authentication
challenge |
SECURITY MODE COMMAND received SERVICE REJECT received SERVICE ACCEPT received TRACKING AREA UPDATE ACCEPT received AUTHENTICATION REJECT received AUTHENTICATION FAILURE sent EMM-DEREGISTERED,
EMM-NULL or EMM-IDLE
mode entered |
Delete the stored RAND and RES |
|
T3417 |
5s In WB-S1/CE mode, 51s |
EMM-SERVICE-REQUEST-INITIATED |
SERVICE REQUEST sent EXTENDED SERVICE REQUEST sent in case f, g, i and j in
subclause 5.6.1.1 EXTENDED SERVICE REQUEST
sent with service type set to "packet services via S1" in case a, b, c, h and k in subclause 5.6.1.1 CONTROL PLANE SERVICE
REQUEST sent as specified in subclause 5.6.1.2.2 |
Bearers have been set up SERVICE REJECT received SERVICE ACCEPT received Indication of
system change from lower layer
received cdma2000® 1xCS fallback rejection received see
subclause 5.6.1.4.2 |
Abort the procedure |
|
T3417ext |
10s |
EMM-SERVICE-REQUEST-INITIATED |
EXTENDED SERVICE REQUEST sent in case d in
subclause 5.6.1.1 |
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 |
Select GERAN or UTRAN |
|
T3417ext-mt |
4s |
EMM-SERVICE-REQUEST-INITIATED |
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 |
Select GERAN or UTRAN |
|
T3418 |
20s In WB-S1/CE mode, 38s |
EMM-REGISTERED-INITIATED EMM-REGISTERED EMM-TRACKING-AREA-UPDATING-INITIATED EMM-DEREGISTERED-INITIATED EMM-SERVICE-REQUEST-INITIATED |
AUTHENTICATION
FAILURE (EMM cause = #20 "MAC failure" or #26 "non-EPS
authentication unacceptable") sent |
AUTHENTICATION REQUEST received or AUTHENTICATION REJECT
received or SECURITY MODE COMMAND received when entering EMM-IDLE mode indication of transmission failure of AUTHENTICATION FAILURE
message from lower layers |
On first expiry, the UE should consider the network as false and follow item f of
subclause 5.4.2.7, if the UE is not attached for emergency bearer
services or access to RLOS. On first expiry, the
UE will follow subclause 5.4.2.7 under "For items c,
d, and e:", if the UE is
attached for emergency bearer services or if the UE is attached for access to RLOS. |
|
T3420 |
15s In WB-S1/CE mode, 33s |
EMM-REGISTERED-INITIATED EMM-REGISTERED EMM-DEREGISTERED-INITIATED EMM-TRACKING-AREA-UPDATING-INITIATED EMM-SERVICE-REQUEST-INITIATED |
AUTHENTICATION FAILURE (cause = #21 "synch failure")
sent |
AUTHENTICATION REQUEST received or AUTHENTICATION REJECT
received or SECURITY MODE COMMAND received when entering EMM-IDLE mode indication of transmission failure of AUTHENTICATION FAILURE
message from lower layers |
On first expiry, the UE should consider the network as false and follow item f of
subclause 5.4.2.7, if the UE is not attached for emergency bearer
services or access to RLOS. On first expiry, the
UE will follow subclause 5.4.2.7 under "For items c, d, and
e:", if the UE is attached for emergency bearer services or if
the UE is attached for access to RLOS. |
|
T3421 |
15s NOTE 7 NOTE 8 In WB-S1/CE mode, 45s |
EMM-DEREGISTERED-INITIATED EMM- |
DETACH REQUEST sent with the Detach type IE not
indicating "switch off" |
DETACH ACCEPT received |
Retransmission of DETACH REQUEST |
|
T3423 |
NOTE 3 |
EMM-REGISTERED |
T3412 expires while ISR is activated and either T3346 is running or the UE is in one of the following
states: – EMM-REGISTERED.NO-CELL-AVAILABLE; – EMM-REGISTERED.PLMN-SEARCH;
–EMM-REGISTERED.UPDATE-NEEDED;
or –EMM-REGISTERED.LIMITED-SERVICE. |
When entering state EMM-DEREGISTERED or when entering
EMM-CONNECTED mode. |
Set TIN to "P‑TMSI". For A/Gb mode or Iu mode, see 3GPP TS 24.008 [13] |
|
T3430 |
15s In WB-S1/CE mode, 77s |
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-DEREGISTERED
EMM-REGISTERED |
ATTACH REJECT, DETACH REQUEST, TRACKING AREA UPDATE REJECT with
any of the EMM cause #3, #6, #7, #8, #11, #12, #13, #14, #15, #25, #31 or #35 SERVICE REJECT received with any of the EMM cause #3, #6, #7,
#8, #11, #12, #13, #15, #25,
#31, #35 or #39 TRACKING AREA UPDATE ACCEPT received after the UE sent TRACKING
AREA UPDATE REQUEST in EMM-IDLE mode without the "active" flag set and without the "signalling
active" flag set, and the user-plane radio bearers have not been setup DETACH ACCEPT received after the UE sent DETACH REQUEST with
detach type to "IMSI detach" Upon receipt of ESM
DATA TRANSPORT message as described in subclause 5.3.1.2.1 (NOTE 9) AUTHENTICATION REJECT
received |
NAS signalling connection released Bearers have been set up or a request for PDN connection for
emergency bearer services or a CS emergency call is started Upon receipt of ESM
DATA TRANSPORT message as described in subclause 5.3.1.2.1 (NOTE 9) |
Release the NAS signalling connection for the cases a), b) and
c) as described in subclause 5.3.1.2 |
|
EMM-DEREGISTERED EMM-DEREGISTERED.NORMAL-SERVICE |
TRACKING AREA UPDATE REJECT, SERVICE REJECT with any of the EMM
cause #9, #10 or #40 |
NAS signalling connection released |
Release the NAS signalling connection for the cases d) and e)
as described in subclause
5.3.1.2 and initiation of the attach procedure as specified in
subclause 5.5.3.2.5, 5.5.3.3.5 or 5.6.1.5 |
||
|
T3442 |
NOTE 4 |
EMM-REGISTERED |
SERVICE REJECT
received with EMM cause #39 "CS service temporarily not available" with a non-zero T3442 value |
TRACKING AREA UPDATE
REQUEST sent |
None |
|
T3444 |
NOTE 11 |
All except EMM-NULL and
5GMM-NULL (defined in 3GPP TS 24.501 [54]) |
– UE configured for eCall only mode enters EMM-IDLE mode after
an eCall over IMS – UE configured for eCall only mode moves from GERAN/UTRAN to
E-UTRAN with timer T3242 (see 3GPP TS 24.008 [13]) running – UE configured for eCall only mode enters 5GMM-IDLE mode (defined in 3GPP TS 24.501 [54])
after an eCall over IMS |
– Removal of eCall only restriction – Intersystem change from S1 mode to A/Gb or Iu mode |
Perform eCall inactivity procedure in EPS as described in
subclause 5.5.4. Perform eCall inactivity
procedure in 5GS as described in 3GPP TS 24.501 [54]. |
|
T3445 |
NOTE 12 |
All except EMM-NULL and
5GMM-NULL (defined in 3GPP TS 24.501 [54]) |
– UE configured for eCall only mode enters EMM-IDLE mode after
a call to a non-emergency MSISDN or URI for test or terminal reconfiguration
service – UE configured for eCall only mode moves from GERAN/UTRAN to
E-UTRAN with timer T3243 (see 3GPP TS 24.008 [13]) running – UE configured for eCall only mode enters 5GMM-IDLE mode (defined in 3GPP TS 24.501 [54])
after a call to a non-emergency MSISDN or URI for test or terminal
reconfiguration service |
Removal of eCall only restriction – Intersystem change from S1 mode to A/Gb or Iu mode |
Perform eCall inactivity procedure in EPS as described in
subclause 5.5.4. Perform eCall inactivity
procedure in 5GS as described in 3GPP TS 24.501 [54]. |
|
T3447 |
NOTE 2 |
All except EMM-NULL |
NAS signalling connection release that was not established for
paging, attach without PDN connection or tracking area update request
without "active" or "signalling active" flag set. N1 NAS signalling connection release that was not established
due to paging, or REGISTRATION
REQUEST for initial registration with Follow-on request indicator set
to "No follow-on request pending", or REGISTRATION REQUEST for
mobility and periodic registration update with Follow-on request indicator
set to "No follow-on request pending" and without Uplink data
status IE included (defined in 3GPP TS 24.501 [54]). |
ATTACH ACCEPT or TRACKING AREA UPDATE ACCEPT without the T3447 value
IE. Inter-system change from S1 mode to A/Gb mode or Iu mode is completed REGISTRATION ACCEPT
without the T3447 value IE (defined in
3GPP TS 24.501 [54]). CONFIGURATION
UPDATE COMMAND with the T3447 value IE set to zero or deactivated (defined
in 3GPP TS 24.501 [54]). |
Allowed to initiate transfer of uplink user data |
|
T3448 |
NOTE 10 |
All except EMM-NULL
and 5GMM-NULL (defined in
3GPP TS 24.501 [54]) |
ATTACH ACCEPT message or TRACKING AREA UPDATE ACCEPT message or
SERVICE ACCEPT message received with a non-zero T3448 value. SERVICE REJECT message received with EMM cause #22 "Congestion" and a non-zero T3448
value. REGISTRATION ACCEPT message or SERVICE ACCEPT message received
with a non-zero T3448 value(defined in 3GPP TS 24.501 [54]) SERVICE REJECT message received with 5GMM cause #22 "Congestion" and a non-zero T3448
value(defined in 3GPP TS 24.501 [54]) |
SERVICE ACCEPT message or TRACKING AREA UPDATE ACCEPT message
received without T3448 value SERVICE ACCEPT
message or REGISTRATION ACCEPT message received without T3448 value(defined
in 3GPP TS 24.501 [54]) |
Allowed to initiate transfer of user data via the control plane |
|
T3449 |
5s NOTE 7 In WB-S1/CE mode, 51s |
EMM-REGISTERED |
Bearers have been set up SECURITY MODE COMMAND message received |
SERVICE ACCEPT message received Security protected ESM message or a security protected EMM
message not related to an EMM common procedure received |
SERVICE ACCEPT message considered as a protocol error and EMM
STATUS returned |
|
NOTE 1: The cases in which the default value
of this timer is used are described in subclause 5.3.6. NOTE 2: The value
of this timer is provided by the network operator during the
attach and tracking area updating procedures. 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 service 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. NOTE 6: The
conditions for which this applies are described in subclause 5.5.3.2.6. NOTE 7: In NB-S1
mode, the timer value shall be calculated as described in
subclause 4.7. NOTE 8: 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 9: It
is possible that the UE does not stop or start timer T3440 upon receipt of
ESM DATA TRANSPORT message as described in subclause 5.3.1.2.1. NOTE 10: The timer value is provided by the network in the
ATTACH ACCEPT, TRACKING AREA UPDATE ACCEPT, SERVICE ACCEPT, SERVICE REJECT
or REGISTRATION ACCEPT message, or chosen randomly from a default value
range of 15 – 30 minutes. NOTE 11: If the timer is started due to a UE configured
for eCall only mode moving from GERAN/UTRAN to E-UTRAN with timer T3242 (see
3GPP TS 24.008 [13]) running, the UE starts
the timer with a value set to the time left on timer T3242. Otherwise the UE
starts the timer with a value set to 12 hours. NOTE 12: If the timer is started due to a UE configured
for eCall only mode moving from GERAN/UTRAN to E-UTRAN with timer T3243 (see
3GPP TS 24.008 [13]) running, the UE starts
the timer with a value set to the time left on timer T3243. Otherwise the UE
starts the timer with a value set to 12 hours. |
|||||