Rather than use the in-built mobility models, I want to set the UE's,X, Y, Z co-ordinates from real data. How can I do this?
You can use the file base mobility option. In this you need to specify the X, Y, Z co-ordinates of vs. time. There is one file per UE. I assume you have some method of getting the X, Y, Z co-ordinates of cellphones from a real mobile network.
Understood. Thank you. I have UE position data of position in terms of Lat / Lon. How do I input this ?
latitude and longitude information can not be used directly to identify the position in a 2D plan as X and Y coordinates.
You will need to convert Lat/Lon as : [X, Y ] = f(lng, lat), where f the conversion function from the geographic coordinate to the projected coordinate. Then you can input the coordinates (X,Y) in your program.
In ns3, the function GeographicToCartesianCoordinates() allows to obtain the cartesian coordinates following the WGS-84 using the following code:
"Vector ns3::GeographicPositions::GeographicToCartesianCoordinates (double latitude, double longitude, double altitude, EarthSpheroidType sphType )"
See the link for further details:
https://www.nsnam.org/doxygen/classns3_1_1_geographic_positions.html#aabb0202391e635fbd7c934d345b0da31
Good luck
Thank you for the information Leila. I am trying to use this in NetSim, which is the simulator I am working on.
The Netsim offers a file-based mobility method for each individual UE to set the UE's, X, Y, Z coordinates from real data. In UE properties go to General->Mobility_Model and choose FILE_BASED_MOBILITY.
The file has a specific format as below.
$time T(sec) "$Node_ID_of_UE X Y Z"
Here, you can place time-based x, y, z coordinates of the UE where time should be measured in second and coordinates in meter.
Thanks.
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