In this invention, an idea of the reverse direction label switched path (RLP) in Multi-Protocol Label Switching (MPLS) is applied to the multicast transmission to improve the management transmission in the multicast transmission, and to easily carry out an additional connection and disconnection. Specifically,...http://www.google.fr/patents/US7843896?utm_source=gb-gplus-shareBrevet US7843896 - Multicast control technique using MPLS
