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LTE - UE States (TAU)

LTE - UE States (TAU) [Under LTE]
» E-UTRA and E-UTRAN overall description - 36.300, Rel 8 «
» E-UTRAN access - 23.401, Rel 8 «
» NAS - 24.301, Rel 8 «
» RRC - 36.331, Rel 8 «

Overall NAS/AS states reference: 23.401:4.6, 24.301:5.1.3, 36.300:A.2, 36.331:4.2.1


Cell selection Bearer contexts active
EMM_REGISTERED
(NORMAL SERVICE)
RRC_CONNECTED
RRC Connection Release ←
Bearer contexts active
EMM_REGISTERED
(NORMAL SERVICE)
RRC_IDLE
(DRBs released)

Cell re-selection, DL synch
23.401:5.3.3.0 Tracking Area Update triggered
EMM_TAU_INITIATED
RRC_IDLE
UL synch/Random access
RRC Connection request →
RRC Connection Setup ←
RRC Connection Setup complete →
[TAU Request]
EMM_TAU_INITIATED
RRC_CONNECTED
TAU Accept ←
EMM_REGISTERED
RRC_CONNECTED
24.301:5.3.1.2

  case a)  

T3440 expired
(Active flag was not set in TAU)
EMM_REGISTERED
RRC_IDLE
24.301:5.3.1.2

  case b)  



RRC Connection Reconfiguration ↔
EMM_REGISTERED
RRC_CONNECTED
(DRBs established)


Copyright © Samir Amberkar 2010-12§

LTE - UE States (Attach) « LTE Index » LTE - UE States (Service Request)