Network resource allocation

A method of operating a communication system for providing packet services, the method comprising receiving a session setup request for a session, processing the session setup request to select an end point for the session, determining a first resource group of a plurality of resource groups associated with the end point, determining a first profile of a plurality of profiles of the resource group, determining if the session will violate the first profile, and generating an authorization message for the session in response to determining that the session will not violate the first profile.