LTE: Use of event B2, while handling measurement reporting ?

Question

Since both the events B1 and B2 are used for Inter RAT measurement reporting. Which one is chosen by eNodeB and on what basis ? Is there any dependency on UE capability for that ?

Answer 1

I answered your query related to Event B1. Event B2 (i.e. PCell becomes worse than absolute threshold1 and inter RAT neighbor cell becomes better than absolute threshold2).

eventB2 SEQUENCE {
b2-Threshold1 ThresholdEUTRA,
b2-Threshold2 CHOICE {
b2-Threshold2UTRA ThresholdUTRA,
b2-Threshold2GERAN ThresholdGERAN,
b2-Threshold2CDMA2000 ThresholdCDMA2000
}
},

Please find the list of inequality conditions which need to satisfied to get triggered Event B2.

Inequality B2-1 (Entering condition 1)
Mp + Hys < Thresh1

Inequality B2-2 (Entering condition 2)
Mn + Ofn - Hys > Thresh2

Inequality B2-3 (Leaving condition 1)
Mp - Hys > Thresh1

Inequality B2-4 (Leaving condition 2)
Mn + Ofn + Hys < Thresh2

Mp: Measurement of primary cell.
Mn: Measurement of neighbor cell.
Ofn: Frequency specific offset of the frequency of the inter-RAT neighbor cell.
Hys: Hysteresis parameter for this event.

Please let me know if you still have any doubt.

Comments

For Example UE is in VoLTE call, and i deactivate B2 Event then IRAT handover will not Happen and my Call continuity will increase. So, with deactivation B2 event is their any Saver of UE battery.