Patent ID: 8457494
Filing Date: 2013-06-04
Classification: H04J,H04L,H04Q

Abstract:
1. An Optical Line Terminal (OLT), comprising: a first receiving module, configured to receive an upstream message from an Optical Network Unit (ONU); a control processing module, configured to obtain multicast control information in the upstream message; wherein the multicast control information includes a multicast group number and a multicast port ID, and the multicast control information is a multicast upstream command carried in the upstream message, and the upstream message further includes: an ONU-ID, a Message-ID, a Command-ID, and a multicast group number; a first multicast module, configured to perform multicast control according to the multicast control information, and generate a multicast downstream command carried in a downstream message according to the multicast control information; wherein the first multicast module comprises a multicast authenticating unit and a first multicast controlling unit; wherein the multicast authenticating unit is configured to check whether the ONU corresponding to the multicast control information is authorized to join a multicast group according to stored rights information of the ONU; and wherein the first multicast controlling unit is connected to the multicast authenticating unit and configured to generate a multicast downstream command carried in a downstream message according to the multicast control information when an authentication result of the multicast authenticating unit indicates consent to joining the multicast group, wherein the downstream message includes: an ONU-ID, a Message-ID, a Command-ID, a multicast Port-ID, and a multicast group number; and a first sending module, configured to generate the downstream message carrying the multicast downstream command according to the multicast control information and send the downstream message to the ONU.