Increase in counter VS.U2LTEHO.MeasTimeOut.Num

Mobility
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1

Hi Experts.
Can any one explain this counter and triggering of this counter VS.U2LTEHO.MeasTimeOut.Num
We have found few cells in our network that above counter increased.
Pleace explain impact high triggering of this counter.
This is Huawei.

2

Is this handover from UMTS to LTE?

3

Yes I think.
May be reselection.