The Registration Threshold Modification Algorithm
UCC is used by call handling requests and registration message initiated by the users:
given a ρUCC , the new value of the registration threshold, α’, required to obtain a desired UCC utilization ρd, is given by:
- ρd / ρUCC = ( Ur α / α’ + Uc ) / Ur + Uc
- ρd = (ρL + ρH ) / 2