WCDMA/UMTS Timer
T300
T302
T304
T305
T307
T308
T309
T310
T311
T312
T313
T314
T315
T316
Public Public Public
T317
Public Public Public
Function when Start/Stop/at expiry
>>Starts at the transmission of RRC CONNECTION REQ
>>Stops at the receipt of RRC Connection setup
>> At expiry, re-transmits RRC CONNECTION REQ if V300<=N300, ELSE go to IDLE Mode
>> Starts at the transmission of Cell Update or URA Update
>> Stops at the receipt of Cell Update Confirm or URA Update Confrim
>> At expiry, re-transmits Cell Update/URA Update if V302<= N302 Else goto IDLE Mode
>> Starts at the transmission of UE Capability Info
>> Stops at the receipt of UE capability Information Confirm
>> At Expiry, re-transmits UE capability information if V304<=N304, Else initiate a Cell Update proc
>> Starts upon entering URA_PCH/CELL_PCH state. OR upon receipt of CELL Update Confirm/URA Update Confir
>> Stops upon entering another state
>> At expiry, transmits CELL Update if T307 is not activated and UE detects "In Service Area" Otherwise If T307 is n
>>Starts when timer T305 has been expired and UE detects the " Out of Service Area"
>>Stops when UE detects "In Service Area"
>>At Expiry it transit to the IDLE MODE
>> Starts at the transmission of RRC Connection Release Complete
>> Not Stopped
>> At Expiry,transmits RRC connection Release Complete IF V308<=N308 ELSE GOTO IDLE MODE
>>Starts upon receipt of Cell Change Order from UTRAN message
>> Stops upon successful response to a CONNECTION ESTABLISHMENT REQUEST in a new CELL
>> At Expiry, resumes the Connection to UTRAN network
>> Starts upon transmission of PUSCH Capacity Request message
>> Stops upon receipt of Physical Shared Channel Allocation
>> At expiry transmits PUSCH Capacity Request if V310 <= N310 ELSE stops the procedure
>> Starts upon reception of Physical Shared Channel Allocation ( When "PUSCH ALLOCATION" set to "PUSCH ALL
>> Stops upon receipt of Physical Shared Channel Allocation ( When "PUSCH allocation" set to "PUSCH allocation
>> At Expiry, UE initiate a PUSCH CAPACITY REQUEST procedure
>>Starts When UE starts to establish dedicated channel mode
>>Stops When UE detects N312 "in sync" indication from Layer-1(PHY)
>>Timer expires when criteria for physical channel establishment failure is fulfilled
>>Timer Starts when UE detects consecutive N313 "out of sync" indication from Layer-1(PHY)
>> Stops when UE detects consecutive N315 "in sync" indication from Layer-1(PHY)
>> Timer expires when the criteria for Radio Link failure is fulfilled
>>Starts after the criteria for radio link failure have been fulfilled, and if radio bearers associated with T314 exists.
>>Stops when the cell update procedure completes
>>REFER 8.3.1.13 in 3GPP TS 25.331 Specification
>>Starts after the criteria for radio link failure have been fulfilled, and if radio bearers associated with T315 exists.
>> Stops when the cell update procedure completes
>> REFER 8.3.1.14 in 3GPP TS 25.331 Specification
>>Starts when UE detects "out of service area" in the URA_PCH or CELL_PCH state
>>Stops when UE detects "in service area"
>>At expiry,initiates cell update procedure if "in service area" is detected, OTHERWISE starts timer T317,
transit to CELL_FACH state and initiate cell update procedure when the UE detects "in service area"
Public Public Public
>> Starts when timer T316 expires OR when in CELL_FACH state, UE detects "out of service area"
>> Stops when UE detects "in service area"
>> At Expiry, transits to IDLE MODE
Public Public Public
Penalty to access the same cell but not other cell/ura
RRC connection re establishment timer for CS RAB
RRC connection re establishment timer for PS RAB
Public Public Public
Timer Setting
T316 30 seconds
T317 180 seconds
T305 30 minutes
T307 30 seconds
T302 2000 ms
N302 7
MSActivitySupervision’
Description
This timer is started when the UE detects an "out of service area" in URA_PCH or Cell_PCH state. When the timer ("in
service area" not detected) expires, the UE enters Cell_FACH state (and starts timer T317 if "out of service area" is still
detected).
This timer is started when the UE detects an "out of service area" in Cell_FACH state. When the timer (in service area
not detected) expires, the UE enters the idle mode.
The UE implementing REL4 3GPP TS 25.331 specification interprets all values of T317 as infinite.
Periodic Cell/URA update timer
Timer for transition to idle mode, when the timer T305 expires, and the UE detects an "out of service area".
Cell/URA update retransmission timer
Note!
The minimum value of this timer is limited to 1000 ms
Cell/URA update retransmission counter
Note!
This parameter has a permanent value of 7 set by the system.
Starts this timer in Cell PCH state, If expired will go to idle.
Parameter Setting
N300 3
T300 2000 ms
N302 7
T302 2000 ms
N304 2
T304 2000 ms
N308 2
T308 160 ms
N312 4
T312 6 seconds
N312Conn 4
T312Conn 1 seconds
N313 20
T313 3 seconds
N315 1
T314 4 seconds
T315 10 seconds
T305 30 minutes
T307 30 seconds
Public Public
T307 30 seconds
T309 5 seconds
T316 30 seconds
T317 180 seconds
T323 0 seconds
T321 100 ms
Public Public
Description
RRC connection request retransmission counter
Range and step: 0 ... 7, step 1
RRC connection request retransmission timer
Range and step: 100 ms, 200 ms, 400 ms, 600 ms, 800 ms, 1000 ms, 1200 ms, 1400 ms, 1600 ms, 1800 ms, 2000 ms, 3000 ms,
Cell/URA update retransmission counter
Range and step: 0 ... 7, step 1.
Note!
This parameter has a permanent value of '7' set by the system.
Cell/URA update retransmission timer
Range and step: 100 ms, 200 ms, 400 ms, 600 ms, 800 ms, 1000 ms, 1200 ms, 1400 ms, 1600 ms, 1800 ms, 2000 ms, 3000 ms,
Note!
The minimum value of this timer is limited to 1000 ms.
UE capability information retransmission counter
Range and step: 0 ... 7, step 1.
UE capability information retransmission timer
Range and step: 100 ms, 200 ms, 400 ms, 1000 ms, 2000 ms.
RRC connection release complete retransmission counter
Range and step: 1 ... 8, step 1.
RRC connection release complete retransmission timer
Range and step: 40 ms, 80 ms, 160 ms, 320 ms.
Counter for maximum number of successive "in sync" indications (within timer T312) during the establishment of a PhyCH
Note that this UE counter is used in idle mode.
Range and step: 1, 2, 4, 10, 20, 50, 100, 200, 400, 600, 800, 1000.
Timer for supervising successful establishment of a PhyCH
Note that this UE timer is used in idle mode.
Range and step: 1 ... 15 s, step 1 second.
Counter for maximum number of successive "in sync" indications (within timer T312) during the establishment of a PhyCH
Note that this UE counter is used in connected mode
Range and step: 1, 2, 4, 10, 20, 50, 100, 200, 400, 600, 800, 1000
Timer for supervising successful establishment of a PhyCH
Note that this UE timer is used in connected mode
Range and step: 1 ... 15 s, step 1 second
Counter for maximum number of successive "out of sync" indications within timer T313 (out of synch criteria)
Range and step: 1, 2, 4, 10, 20, 50, 100, 200.
Radio link failure timer
Range and step: 0 ... 15 s, step 1 second.
Counter for maximum number of successive "in sync" indications within timer T313 (in synch criteria)
Range and step: 1, 2, 4, 10, 20, 50, 100, 200, 400, 600, 800, 1000.
RRC connection re-establishment timer for TM-RLC and UM-RLC radio bearers
RRC connection re-establishment timer for PS bearers.
Range and step: 0 s, 10 s, 30 s, 60 s, 180 s, 600 s, 1200 s, 1800 s.
Periodic Cell/URA update timer
Range and step: 0 min (infinity, no update), 5 min, 10 min, 30 min, 60 min, 120 min, 360 min, 720 min
Timer for transition to idle mode, when the timer T305 expires, and the UE detects an "out of service area".
Public Public
Range and step: 5 s, 10 s, 15 s, 20 s, 30 s, 40 s, 50 s.
Inter-RAT cell reselection timer (used in Cell Change Order From UTRAN only)
Range and step: 1 ... 8 s, step 1 seconds.
This timer is started when the UE detects an "out of service area" in URA_PCH or Cell_PCH state. When the timer expires ("in s
Range and step: 0 seconds, 10 seconds, 20 seconds, 30 seconds, 40 seconds, 50 seconds, 999 seconds (infinity).
This timer is started when the UE detects an "out of service area" in Cell_FACH state. When the timer expires ("in service area"
Range and step: 0 s, 10 s, 30 s, 60 s, 180 s, 600 s, 1200 s, 1800 s.
Note that the UE implementing REL4 3GPP TS 25.331 specification interprets all values of T317 as infinity and the UE enters the
With timer T323 in system information message the network informs the UE that the rel.8 Fast Dormancy feature is supported
The use of 0 s indicates no need to apply the inhibit timer and the UE is sending the SIGNALLING CONNECTION RELEASE INDICA
The UE is inhibited from sending the SIGNALLING CONNECTION RELEASE INDICATION message whilst timer T323 is running.
This parameter indicates the time the UE waits until initiating DRX operation in High Speed CELL_FACH. UE enters HS-DSCH DRX
Public Public
Parameter Setting
UL/DL activation timer (UL_DL_activation_timer) 2 s
(Cell_FACH state; uplink and downlink)
ExtendedULDLActivationTmr 0 (zero)
DCHutilRelThrUL 256 bps
DCHutilRelThrDL 256 bps
MACdflowutilRelThr 256 bps
MACdflowutilTimetoTrigger 0s
MACdflowthroughputAveWin 3s
SmartHSPATputAveWin 1s
SmartHSPATimeToTrigger 0.2 s
DRXCycleHSFACH 16 frames
DRXInactiveTimerHSFACH 2s
DRXInterruptHSDSCHData Disabled
RXBurstHSFACH 1 frame
Layer 3 parameters
Inactivity timer for uplink 384kbps DCH
(InactivityTimerUplinkDCH384) (Cell_DCH state; 2 seconds
uplink and downlink)
Inactivity timer for uplink 320kbps DCH 2 seconds
(InactivityTimerUplinkDCH320)
Inactivity timer for uplink 256kbps DCH 2 seconds
(InactivityTimerUplinkDCH256)
Inactivity timer for uplink 128kbps DCH 2 seconds
(InactivityTimerUplinkDCH128)
Inactivity timer for uplink 64kbps DCH 3 seconds
(InactivityTimerUplinkDCH64)
Inactivity timer for uplink 32kbps DCH 5 seconds
(InactivityTimerUplinkDCH32)
Inactivity timer for uplink 16kbps DCH 5 seconds
(InactivityTimerUplinkDCH16)
Public
Inactivity timer for uplink 8kbps DCH 5 seconds
(InactivityTimerUplinkDCH8)
SmartInactivityTimerDCH 1.2 s
CellDCHtestTmr 0 minutes
ToCellFACHinTest 1 (Yes)
InactDetForStreamingRB 1 (In use)
Direct State Transition From Cell_PCH to 1 (true)
Cell_DCH (CUCforPCHtoDCHallowed)
CPICH Ec/No Threshold Value For CUC Usage 25 (corres
(CUCEcNoThreshold)
Downlink traffic volume low threshold for GTP- 128 bytes
entity (TrafVolThrDLLowGTP)
Signalling link inactivity timer
(SignallingLinkInactivityTimer) (Cell_DCH state; 2 seconds
uplink and downlink)
Waiting time for UL/DL capacity request 5 seconds
(UL_DLcapacityReqWait)
MS activity supervision timer
(MSActivitySupervision) (Cell_PCH and URA_PCH) 15 minutes
Max cell reselections (MaxCellReselections) 3 times
Public
Max cell reselections (MaxCellReselections) 3 times
Cell Reselection Observing Time 16 min
(CellReselectionObservingTime)
RANAP initiation timer (RANAPprocInitWait) 10 seconds
(Cell_DCH and Cell_FACH)
Time supervision for inactive signaling
connection towards the PS-CN 1 min
(SignConnActivitySupervision) (Cell_PCH and
URA_PCH)
CVUserInactInSignConnRel 1 (Yes)
RANAP initiation timer for CS
45 seconds
Internal supervision timer of the RRC entity for
NAS signaling sequence towards the CS domain
PageRep1stInterv 1100ms
Public
PageRep1stInterv 1100ms
PageRep2ndInterv 2000ms
Public
Description
This timer is used on MAC-c to detect idle periods on data transmission for the UE in Cell_FACH state. Based on this timer, the M
state transition from Cell_FACH to Cell_PCH (or URA_PCH).
Range and step: 1... 120 s, step 1 s.
This parameter defines an extended Cell_FACH state inactivity supervision time used by the RNC (instead of the normal UL_DL_
Extended Cell_FACH state inactivity time is used only for UEs not supporting Cell/URA PCH state.
Range: 0...120 s ; 0 = ‘not in use’.
This parameter defines the release threshold for the utilisation measurement of the NRT DCH in uplink. The threshold is define
measures the number of all correctly received bits during the sliding measurement window. The sliding measurement window
This parameter defines the release threshold for the utilisation measurement of the NRT DCH in downlink. The threshold is defi
measures the number of all transmitted bits during the sliding measurement window. The sliding measurement window is defi
This parameter defines the low utilisation threshold of the throughput measurement of the MAC-d flow.
This parameter defines the low utilisation time to trigger for MAC-d flow.
This parameter defines the averaging window size for the throughput measurement of the MAC-d flow.
The throughput measurement measures the number of bits transmitted by the MAC-d during the sliding measurement window
'MACdflowthroughputAveWin' parameter. The value '0' means that the MAC-d flow throughput measurement is not activated.
This parameter defines the HS-DSCH and E-DCH sliding averaging window sizes of the throughput measurements for the identi
EDCHMACdFlowThroughputAveWin parameters.
This parameter defines the time-to-trigger values of the HS-DSCH MAC-d flow low utilisation measurement and E-DCH MAC-d
instead of the MACdflowutilTimetoTrigger and EDCHMACdFlowThroughputTimetoTrigger parameters.
This parameter indicates the length of the DRX Cycle during DRX operation in High Speed CELL_FACH.
This timer is used on MAC -c to detect the idle periods on data transmission (NRT HSPA RBs and SRBs) for the Rel8 and newer U
Based on this timer the MAC-c gives No_Data indication to RRC, which further can change the state of the UE from Cell_FACH s
This parameter indicates whether DRX operation in High Speed CELL_FACH can be interrupted by HS-DSCH data or not. If DRXIn
state is allowed to UEs that does not support HSRACH. If DRXInterruptHSDSCHData is set to disabled, DRX operation on CELL_F
This parameter indicates the period within the DRX Cycle that the UE continuously receives HS-DSCH.
This timer indicates how long the radio and transmission resources are reserved after the silence detection of DCH. Timers are
Only uplink parameters are listed here, corresponding timers are also defined for downlink direction. Note that the value '0FFh
Range and steps are described in 'Packet Scheduler'.
See above.
See above.
See above.
See above.
See above.
See above.
Public
See above.
This timer indicates how long the radio and transmission resources are reserved for Smartphone after inactivity detection on D
the InactivityTimerDownlinkDCH and InactivityTimerUplinkDCH parameters.
Parameter value 255 means that Smartphone specific DCH inactivity timers are not used.
When any other value than zero is set to the CellDCHtestTmr, this value is used instead of the RB/DCH specific inactivity timers
timer CellDCHtestTmr defines the maximum time an inactive UE is allowed to remain in Cell_DCH state.
When the timer expires, the UE is switched to Cell_FACH state if the parameter ToCellFACHinTest equals 'Yes', and the procedu
equals 'No', an Iu Release procedure is initiated, and the UE is switched to idle mode.
0..60 minutes, step 1 minutes; 0 = 'Not used'.
When the test timer CellDCHtestTmr expires, the UE is switched to Cell_FACH state when the parameter ToCellFACHinTest equa
is initiated in the Cell_DCH state and the UE is switched directly to the idle mode.
0 (No), 1 (Yes)
This parameter defines whether inactivity detection for streaming radio bearers is in use or not.
If inactivity detection is in use, then the system can release user plane resources used by inactive streaming radio bearer. If res
detected, new resources are reserved.
Releasing of resources reserved for streaming radio bearer can cause UE to be transferred to CELL_FACH state if there are no o
If there are other active radio bearers for this UE, streaming radio bearer DCH/HS-DSCH/E-DCH transport channels are released
Inactivity detection can be used with streaming radio bearers mapped to HSPA or DCH transport channels.
0 (Not in use), 1 (In use)
The parameter defines if it is allowed to move UE directly from Cell/URA_PCH to Cell_DCH by using RRC: CELL UPDATE CONFIR
Range: 0 (false), 1 (true)
The parameter defines the threshold value which is compared to CPICH Ec/No measurement value received from the UE in Cel
The threshold is used to estimate if the quality of radio-path is good enough for using the RRC: CELL UPDATE CONFIRM messag
state to Cell_DCH state or not.
If the reported CPICH Ec/No < CUCEcNoThreshold, the Radio Bearer Reconfiguration procedure and AM RLC-SAP is used for the
Range: 0 … 49, step 1
This parameter defines, in bytes, the lower traffic volume threshold of buffered RAB/tunnel-specific data in the GTP-entity for t
transferred directly to cell_DCH state.
Range: 0 (0 bytes), 8 (8 bytes), 16 (16 bytes), 32 (32 bytes), 64 (64 bytes), 128 (128 bytes), 256 (256 bytes), 512 (512 bytes), 102
This timer is used for inactivity detection of the signalling link in Cell_DCH state. The timer is set after inactivity of the signalling
When the timer expires, or the corresponding RB inactivity expires, a state transition from Cell_DCH to Cell_FACH state is initia
Range and step: 0 ... 20 s, step 0.5 s.
Range and step: 0 ... 20 s, step 0.5 s.
This timer is a management parameter that can be modified via a GUI.
MSActivitySupervision timer is used in RRC states Cell_PCH and URA_PCH for supervising the inactivity of NRT RAB(s).
The timer is started when a state transition to either of these states is executed. MSActivitySupervision timer is stopped when
Cell_FACH or Cell_DCH state. The timer is restarted (from the initial value) when the inactivity of NRT RAB(s) is detected again,
The MSActivitySupervision timer expires when the first "inactive state indication" (that is, Cell/URA Update, which does not cau
the UE. The RNC asks the PS-CN to release the Iu connection.
If the parameter value is set to zero, state transition to Cell_PCH/URA_PCH is not allowed when inactivity is detected in Cell_FA
Range and step: 0 ... 1440 min, step 1 min.
The maximum allowed number of cell reselections during Cell Reselection Observing Time in Cell_FACH or Cell_PCH state befo
Public
The number of cell reselections is counted in both Cell_FACH and Cell_PCH states. When the UE is in Cell_FACH state, the value
Reselection Observing Time (CellReselectionObservingTime) is used when deciding a target state after the MAC-c entity has se
The value '0' means that URA_PCH state is 'disabled'.
Range and step: 0 ... 100 times, step 1 times.
The timer is set when the first Cell Update message due to 'cell reselection' is received while UE is in CELL_FACH or CELL_PCH s
Range and step: 1..60, step 1 min
This timer is used for supervising a reception of a RANAP procedure (RAB Assignment Request, Iu Release Command, etc.) from
in Cell_FACH and Cell_DCH states.
The timer is started when the Initial UE message is forwarded towards the CS/PS-CN. The timer is stopped when a RANAP proc
the timer expires, the following procedure takes place:
If the connection is established towards the PS-CN, there are no RABs for this UE, and the supervision timer SignConnActivity S
requested from the PS-CN and the UE is switched to the idle mode. Otherwise, the UE is handled as defined by the SignConnAc
If the connection is established towards the CS-CN, there is no signalling connection towards the PS-CN. A release of the establ
switched to the idle mode.
If there is a connection towards the PS-CN for this UE, a release of the established Iu connection is requested from the MSC, an
kept in the Cell_FACH state (or switched to Cell/URA_PCH state if there are inactive NRT-RAB(s) for this UE).
Range and step: 5... 30 s, step 1s
This timer defines whether it is allowed to maintain an inactive signalling connection towards the PS-CN and how long the RNC
procedure.
If the value '0 seconds' is used, an inactive signalling connection is not allowed and the Iu release is requested from the PS-CN
The last NRT-RAB is released (in Cell_DCH or Cell_FACH state).
The NAS signalling sequence (for example RAU or SMS) is performed between the PS-CN and the UE in Cell_DCH state, and no
Range and step: 0 (0 seconds), 1 (10 seconds), 2 (20 seconds), 3 (30 seconds), 4 (1 minute), 5 (2 minutes), 6 (5 minutes), 7 (10 m
Default value: 4
This parameter enables the RANAP cause value ‘user inactivity’ in the RANAP: Iu Release Request procedure when the RNC rel
If this cause value is used, the SGSN is allowed to ignore the Iu release request (that is, the SGSN can decide whether to keep t
received from the RNC).
If the SGSN ignores the Iu release request, the RNC restarts the SignConnActivitySupervision. The UE is switched to the PCH sta
signalling) in progress at that moment.
0 (No), 1 (Yes)
This timer is used for supervising a reception of a RANAP procedure (RAB Assignment Request, Iu Release Command, etc.) from
Cell_FACH and Cell_DCH states.
This timer has a hard coded value of '45 seconds'.
The time interval between the first paging procedure and the first repeated paging procedure when no response (cell update w
the UE within the time supervision.
Public
The value zero means that the paging procedure is not repeated.
The interval between the first and the second repeated paging procedures.
If the value of PageRep1stInterv is set to zero, the RRC entity interprets also the PageRep2ndInterv as zero (regardless of the re
Public
Manged Object Abbreiviated
WACUL_DL_activation_timer
Public
