Download - UMTS Timers

Transcript

WCDMA/UMTS TimerFunction when Start/Stop/at expiry

T300>>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> Starts at the transmission of Cell Update or URA Update>> Stops at the receipt of Cell Update Confirm or URA Update Confirm>> At expiry, re-transmits Cell Update/URA Update if V302> 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> Starts upon entering CELL_FACH/URA_PCH/CELL_PCH state. OR upon receipt of CELL Update Confirm/URA Update Confirm>> 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 not active, initiate starting of timer T307

T307>>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

T308>> Starts at the transmission of RRC Connection Release Complete>> Not Stopped>> At Expiry, transmits RRC connection Release Complete IF V308>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

T310>> Starts upon transmission of PUSCH Capacity Request message>> Stops upon receipt of Physical Shared Channel Allocation>> At expiry transmits PUSCH Capacity Request if V310 > Starts upon reception of Physical Shared Channel Allocation ( When "PUSCH ALLOCATION" set to "PUSCH ALLOCATION pending")>> Stops upon receipt of Physical Shared Channel Allocation ( When "PUSCH allocation" set to "PUSCH allocation assignment")>> At Expiry, UE initiate a PUSCH CAPACITY REQUEST procedure

T312>>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

T313>>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

T314>>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

T315>>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

T316>>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"

T317>> 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


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