LTERRC协议解读.ppt

RRC Connection (Sub-)States for UE 5.2 System Information MIB = Info essential for starting system acquisition SIB1 = Info essential for camping on the cell SIB2 = Info essential for accessing the cell SIB3 = Info common for cell re-selection SIB4 = Intra-frequency, neighbor cell specific, re-selection info SIB5 = Inter-frequency, common and cell specific re-selection info MIB, SIB1, SIB2 are mandatory! 5.5 Measurements Five eUTRA and two inter RAT reporting events are defined: Event A1: Serving becomes better than absolute threshold; Event A2: Serving becomes worse than absolute threshold; Event A3: Neighbour becomes amount of offset better than serving; Event A4: Neighbour becomes better than absolute threshold; Event A5: Serving becomes worse than absolute threshold1 AND Neighbour becomes better than another absolute threshold2. Event B1: Inter RAT neighbour becomes better than absolute threshold Event B2: Serving becomes worse than absolute threshold1 AND Inter RAT neighbour becomes better than another absolute threshold2. Each event has defined thresholds-based entry and exit criteria: For entry criteria, all individual specified thresholds have to be crossed For exit criteria, at least one specified threshold has to be crossed The event triggers if a timer set to the timeToTrigger value (configured for this event) when the entry criteria are first met, expires before the exit criteria are met. * RRC 信令流程概要 (Spec 36.331) 5.2 System information Connection control 5.3.2 Paging 5.3.3 RRC connection establishment 5.3.4 Initial security activation 5.3.5 RRC connection reconfiguration 5.3.6 Counter check 5.3.7 RRC connection re-establishment 5.3.8 RRC connection release 5.3.9 RRC connection release requested by upper layers 5.3.10 Radio resource configuration 5.3.11 Radio link failure related actions 5.3.12 UE actions upon leaving RRC_CONNECTED 5.3.13 UE actions upon PUCCH/ SRS release request 5.4 Inter-RAT mobility 5.5 Measurements Other 5.6.1 DL informat