First when we talk about testing it means two things: what to test and what is our expected outcome from that. Then compare it with gained result. Then we can say either it is expected behavior or not. Similarly if we will say throughput testing.
It is not answerable here so providing you link here: http://www.jdsu.com/ProductLiterature/lte-epc-test-overview-of-test-concepts-and-tools-for-trials-an-nsd-tm-ae.pdf
http://www.sharetechnote.com/html/Throughput.html
