NS-3 lte handover related table

[csetea...@gmail.com]

i am new to ns-3 and not sure how to implement the following.

1) I would like to have a table to keep track of the handovers taking place in an ns-3 lte femtocell scenario. I would like to be able to write into it every time a handover takes place and to read from it certain values. What would be the best way to achieve this?

2) I  am looking to find SINR values, to determine handover necessity. Is that readily available through some in-built function or how do i obtain the measures to calculate SINR?

please, any pointers would be highly appreciated and thank you.

[Konstantinos]

Have you considered looking into the documentation?

http://www.nsnam.org/docs/models/html/lte-design.html#handover

On Wednesday, 26 March 2014 12:17:16 UTC, csetea...@gmail.com wrote:

i am new to ns-3 and not sure how to implement the following.

1) I would like to have a table to keep track of the handovers taking place in an ns-3 lte femtocell scenario. I would like to be able to write into it every time a handover takes place and to read from it certain values. What would be the best way to achieve this?

Where exactly do you want this? Keeping track of different events can be implemented using the tracing system. Look at the example of LTE for handover that logs the HO event. If you just want to log it like this, it is quite simple. If you want to have it in a HO-algorithm it might be more difficult be the process is the same; hook on a trace source for the HO-event.
 

2) I  am looking to find SINR values, to determine handover necessity. Is that readily available through some in-built function or how do i obtain the measures to calculate SINR?

There is a HO-algorithm based on 'strongest cell' RSRP value. I am not an expert on LTE, but this looks like another way to look on SINR, right?
 

[csetea...@gmail.com]

Thank you so much sir for your prompt reply.
We are trying to modify handover algorithm such that handover takes place based on the user history. So we modified the a2-a4 algorithm such that we created a table that records the initial cell that the user equipment connects to and the best neighbour cell . The problem is that everytime a handover takes place a new table is created and the existing values are lost  because every time a handover takes place the class is called again.
Is there any way to declare the table such that a new table is not created when a handover takes place , and the existing values are preserved ?

Thanks in advance.