top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

LTE : what is difference between event A3 and A4

+4 votes
3,814 views

What is difference between event A3 and A4 in lte from handover purpose.
what is role of A3 in handover

posted Jan 13, 2017 by anonymous

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

+1 vote

As per the definition of different handover events, A3 event compares the measurement of neighboring cell and serving cell while A4 event is completely depends on measurement of neighboring cell.

I have used event A3 during the handover scenario. As soon as event A3 is triggered, handover procedure is executed.

answer Jan 14, 2017 by Harshita
On what basis decision is taken to use a particular event among A3, A4 and A5 for  the handover decision.
commented Jan 14, 2017 by Ganesh
Similar Questions
+2 votes
LTE: How different threshold values are derived for different event like A1, A2, A3, A4 and A5 ?

I was going through the measurement configuration sends from eNodeB to UE in RRC Connection Reconfiguration message.
I saw that multiple events have been defined and are used. Couple of parameters are considered to detect entering and leaving condition of an event for example event A1. Now I have a question "Threshold and Hys values are same for all the cell or it may different". Does the standard define the value of all these parameters or network operator defines ? If network operator does then what are points to derive these values ?

+3 votes
Understanding A3 AND A4 LTE event UE measurement report?

I understood A3 and A4 in the following way -

A3 event - UE measures both serving and neighbour cell?
A4 event - UE measures only neighboring cell?

Please correct me if my understanding is wrong.

+4 votes
What is the difference between A3 and A6 Event in measurement report config ?

A3 :- Neighbour becomes offset better than PCell
A6 :- Neighbour becomes offset better than SCell

Please Clarify the difference

+3 votes
In LTE, out of all events I heard A3 event is most important . Why?

If I am wrong, please specify which event is important?

0 votes
LTE: Event A3 or Event A5 - which one to use?

We currently use Event A3 on our network but we are starting to explore the idea of using Event A5 instead for Inter-Frequency Handovers.

Our LTE network is still very much in the development stage as sites are being rolled out on a weekly basis, this will continue for the remainder of this year.

I would be of the opinion, which was established based on theory, that although A5 does offer some small benefits over A3, A3 would in fact be the better option for our network.

Can you explain what the benefits of using A5 instead of using A3 are and which would you recommend?

Also what changes in KPI's would you expect to see if we were to change from A3 to A5?

...