Another embodiment may comprise a network including a device to generate a request...http://www.google.com/patents/US7701938?utm_source=gb-gplus-sharePatent US7701938 - Advanced multicast support for cableAdvanced Patent SearchPublication numberUS7701938 B1Publication typeGrantApplication numberUS 11/292,725Publication dateApr 20, 2010Filing dateDec 1, 2005Priority dateDec 13, 2004Fee statusPaidPu