Cyclostationary Noise in Oscillators

Hi! I am a bit confused about the phase noise and jitter measurements in cadence 6.15 and MMSIM10. I will try to put my questions in points * First, To measure phasenoise/jitter of a ring oscillator which is the best way, PSS+PNOISE or a transient noise simulation? * Secondly, If PSS+PNOISE, then does it include the cyclostationary noise of the circuit? * Third, Also specifying "PM" in pnoise setup, there is no option to get the phase noise and in the Main form one can only plot the jitter. * Lastly, if we do a transient noise simulation as listed in several online documents by cadence like" Calculating large signal Phase noise using transient noise analysis". one Can plot the phase noise but how can one compute the jitter in that case? There are columns with labels "Period Jitter" and "Phase jitter" but I haven't been successful in finding there definitions, if some one could please elaborate that as well.