Method for adjusting the call admission control threshold(s) and call admission control method using the same

The present invention concerns a method for adjusting the call admission control threshold(s) of a least one cell of a cellular network and a call admission control method using the same. Method for adjusting the call admission control threshold(s) of at least one cell of a cellular network, characterised in that said method consists at least, for each cell, in: determining repetitively the instantaneous loading level value (Xn) of the considered cell; repeating this operation a number (N) of times during a predetermined time period (T); comparing the different values (Xn) with the maximum tolerated cell load value (Xth) for the considered cell, or with a value related to said value (Xth), for example through shifting, and determining the number (C) of times where Xn > Xth; modifying the maximum allowed cell load value for new call admission (Xcac), by increase or decrease, when C or C/N is different from a given admissible outage threshold value (Vth); leaving Xcac unchanged when C or C/N is equal to the given admissible outage threshold value (Vth); repeating the aforementioned steps for consecutive time periods (T).