Emergency cell access control

Method for providing automatic cell access control to high-priority mobile users in overload situation, said high-priority mobile users mapped to at least one access class (AC) selected from ACs 11 to 15, comprising: - detecting an overload situation in the mobile network, said overload situation being detected when at least one failure rate parameter exceeds a determined threshold TH 1 for each type of failure rate; - carrying out at least one action to give more priority to the AC associated with said high-priority mobile users. Said action can comprise dedicating PRACH resources specifically to the AC associated with said high-priority mobile users and/or activating access class barring for, at least, part of the users associated with any of AC 0 to 9.