Event B2 (Serving becomes worse than threshold1 and inter RAT neighbour becomes better than threshold2)
The UE shall:
1> for UTRA and CDMA2000, only trigger the event for cells included in the corresponding measurement object;
1> consider the entering condition for this event to be satisfied when both condition B2-1 and condition B2-2, as
specified below, are fulfilled;
1> consider the leaving condition for this event to be satisfied when condition B2-3 or condition B2-4, i.e. at least one of the two, as specified below, is fulfilled;
Inequality B2-1 (Entering condition 1)
Ms + Hys < Thresh1
Inequality B2-2 (Entering condition 2)
Mn+Ofn-Hys > Thresh2
Inequality B2-3 (Leaving condition 1)
Ms - Hys > Thresh1
Inequality B2-4 (Leaving condition 2)
Mn + Ofn +Hys < Thresh2
The variables in the formula are defined as follows:
Ms is the measurement result of the serving cell, not taking into account any offsets.
Mn is the measurement result of the inter-RAT neighbour cell, not taking into account any offsets.
Ofn is the frequency specific offset of the frequency of the inter-RAT neighbour cell (i.e. offsetFreq as defined
within the measObject corresponding to the frequency of the inter-RAT neighbour cell).
Hys is the hysteresis parameter for this event (i.e. hysteresis as defined within reportConfigInterRAT for this event).
Thresh1 is the threshold parameter for this event (i.e. b2-Threshold1 as defined within reportConfigInterRAT for
this event).
Thresh2 is the threshold parameter for this event (i.e. b2-Threshold2 as defined within reportConfigInterRAT for
this event).
Ms is expressed in dBm in case of RSRP, or in dB in case of RSRQ.
Mn is expressed in dBm or dB, depending on the measurement quantity of the inter-RAT neighbour cell.
Ofn, Hys are expressed in dB.
Thresh1 is expressed in the same unit as Ms.
Thresh2 is expressed in the same unit as Mn.
