I tried to run the lena-simple-epc example and I found that the reception is not affected by distance.

In order to test I changed the src/lte/examples/lena-simple-epc.cc file to include application layer logging:

    LogComponentEnable ("UdpClient", LOG_LEVEL_ALL);
    LogComponentEnable ("PacketSink", LOG_LEVEL_ALL);

at line 50.

I tested with the following command:

    ./waf --run 'src/lte/examples/lena-simple-epc --distance=1e10'

with different values of the distance parameter. The result is that for any distance, the performance is exactly the same, i.e. the packets are received at the exact same time instance.

I would expect that for distance over the LTE range, communication would be imposible, and for smaller distances the throughput would increase, thus affecting packet reception times (even marginally). However this is not the case. The simulation seems unaffected by the distance between the nodes.