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Data Broadcasting and Seamless Channel Transition for Highly Demanded Videos Yu-Chee Tseng, Ming-Hour Yang, Chi-Ming Hsieh, Wen-Hwa Liau and Jang-Ping Sheu IEEE Transactions on Communications, May 2001
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Objective Perform channel transition seamlessly.
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Fast Broadcasting (FB)
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Data Padding
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Data Padding (continued)
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Arrangement of Channel Contents
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Arrangement of Channel Contents (shifted)
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Seamless Channel Transition Positive channel transition (PCT) Negative channel transition (NCT)
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Positive Channel Transition
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Negative Channel Transition
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Bandwidth Waste
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Average Waiting Time
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Channel Allocation Policy K: total channels. V 1,V 2, …,V m : videos. D 1,D 2, …,D m : lengths of videos. λ i : request arrival rate of V i. k i : channels assigned to V i.
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Conclusion The authors modify the FB scheme to achieve a seamless channel transition. The channel allocation policy is also formulated.
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S1S1 S2S2 S3S3 S4S4 S5S5 S6S6 S7S7 S1S1 S2S2 S3S3 S8S8 S9S9 S 10 S 11 S 12 S 13 S 14 S 15 S4S4 S5S5 S6S6 S7S7 Add · · · C1C1 C2C2 C3C3 C4C4 C1C1 T1T1 T0T0 Upgrade
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S1S1 S2S2 S3S3 S4S4 S5S5 S6S6 S7S7 S1S1 S2S2 S3S3 S8S8 S9S9 S 10 S 11 S 12 S 13 S 14 S 15 S4S4 S5S5 S6S6 S7S7 release · · · T1T1 T0T0 C1C1 C2C2 C3C3 C4C4 ? ? ? ? ? ? ? ? Downgrade
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