In a few papers, I have read the Asymptotic analysis of Signal-to-Interference-Plus-Noise (SINR) coverage probability. But I cannot actually understand the difference between the conventional coverage analysis and the Asymptotic. On occasions, it seems that Asymptotic analysis is just the subset of general analysis. If this is the case, why bother doing it?
Edit: This Asymptotic analysis is different that what is being done for finding the complexity of algorithms.