In one aspect, the invention provides an adaptive admission control method. In some embodiments, this method includes: (a) storing an admission control threshold value (ACTV) for a GBR capacity partition; (b) for at least a plurality of GBR bearers included in the GBR partition, determining a first performance value for the GBR bearer and determining whether the first performance value for the GBR bearer exceeds a first configured threshold; (c) determine a first percentage value identifying the percentage of GBR bearers included in the GBR capacity partition whose first performance value exceeds the first configured threshold; (d) comparing the first percentage value to a first performance threshold value; and (e) using the result of the comparison in determining whether the ACTV should be increased, decreased or remain the same.