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Internet Protocol Television (IPTV)is a service on the Internet where digital TV signal data is delivered to the participants using the Internet Protocol. IPTV promises to provide many TV channels with lower price for operators and consumers.IPTV distribute program more efficiently than nowadays prevalent coaxial cable distribution. But plenty of TV channels requires large bandwidth for high clear TV programs in IPTV service which is a contradictory issue to the limitation of user access line bandwidth and aggregation network bandwidth.Multicast as a mature one-to-many packet data delivery...