Wednesday, November 9, 2011

LTE Event A1

Event A1 (Serving becomes better than threshold)

The UE shall:


1> consider the entering condition for this event to be satisfied when condition A1-1, as specified below, is fulfilled;
1> consider the leaving condition for this event to be satisfied when condition A1-2, as specified below, is fulfilled;


Inequality A1-1 (Entering condition)
Ms - Hys > Thresh

Inequality A1-2 (Leaving condition)
Ms + Hys > Thresh

The variables in the formula are defined as follows:

Ms is the measurement result of the serving cell, not taking into account any offsets.
Hys is the hysteresis parameter for this event (i.e. hysteresis as defined within reportConfigEUTRA for this event).
Thresh is the threshold parameter for this event (i.e. a1-Threshold as defined within reportConfigEUTRA for this event).
Ms is expressed in dBm in case of RSRP, or in dB in case of RSRQ.
Hys is expressed in dB.

Thresh is expressed in the same unit as Ms.
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