Patent ID: 8243630
Filing Date: 2012-08-14
Classification: H04L

Abstract:
1. A method implemented on an end system computing device of a multiparty videoconference, the method comprising: negotiating dedicated fixed routes, by an end system computing device of each member of the multiparty videoconference, to other members of the multiparty videoconference; creating an audio ALM (application-level multicast) tree for each member of a multiparty videoconference for routing videoconference audio data to other members of the multiparty videoconference using associated ones of the dedicated fixed routes; creating a video ALM tree for each member of the multiparty videoconference for routing videoconference video data associated with the videoconference audio data to the other members using associated ones of the dedicated fixed routes, the audio ALM tree and the video ALM tree being generated by the end system computing device of each member of the multiparty videoconference to designate the dedicated fixed routes for per-stream routing of each data stream between the end system computing devices of members of the multiparty videoconference, wherein the creating the audio and video ALM trees further includes generating each of the audio ALM trees according to shortest-path-first (SPF) selection of data delivery routes and creating each of the video ALM trees according to broadest-path-first (BPF) selection of data delivery routes; and broadcasting a link status message for each member of the multiparty videoconference to other members of the multiparty videoconference.