A packet scheduler controls dispatch of packets containing constant bit rate (CBR) or real time variable bit rate (rt-VBR) at an ingress operation of multiplexing the packets into payloads of an asynchronous transfer mode (ATM) bearer virtual circuit connection. Packets can be queued in one of a number...http://www.google.com/patents/US6654376?utm_source=gb-gplus-sharePatent US6654376 - ATM packet scheduler