Patent ID: 7581098

Claim:
A method for providing secure access to resources in a radio communication system including a hub communicating with a plurality of terminals, the method comprising: determining a quality of service level (QoS) corresponding to one of the terminals; assigning an identifier to the one terminal for communicating over one of a plurality of return channels that are in the direction of the one terminal to the hub, the identifier associating a subset of the terminals with the QoS level, the subset including the one terminal; generating a first encrypted message based on an identifier stored at the hub and a time stamp; and transmitting the first encrypted message to the one terminal, wherein the one terminal is configured to generate a second encrypted message from the assigned identifier and the time stamp and to determine whether the first encrypted message and the second encrypted message match, wherein if there is a match, use of the one return channel is permitted prior to the terminal transmitting a message to the hub.