Control of multicast content distribution

Details Control of multicast content distribution Control of multicast content distribution

H - Electricity

04

N

H04N 21/266 (2011.01) H04N 21/2665 (2011.01) H04N 21/647 (2011.01)

Patent

CA 2739298

A local router stores a content distribution map that specifies a plurality of permitted multicast groups. The local router receives communications from user devices on an access-network side of the local router. Those received communications identify multicast groups for which user devices wish to receive data. The local router ascertains if those identified multicast groups are permitted multicast groups specified by the stored content distribution map. For multicast groups ascertained to be permitted multicast groups, the local router sends communications across a network-side interface requesting membership in those multicast groups. The local router may then receive data for those multicast groups and forward that data to user devices. For multicast groups identified in user device communications ascertained not to be permitted multicast groups, the local router sends no communications across the network-side interface requesting membership.

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