An apparatus for scheduling packets for presenting a plurality of classes, includes (a) a buffer which accumulates received packets in each of the classes, (b) a token administrator which judges whether it is allowed to transmit a packet in each of the classes by virtue of a token associated with each...http://www.google.de/patents/US7106752?utm_source=gb-gplus-sharePatent US7106752 - Apparatus for scheduling packets and method of doing the same
