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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.

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Presentation on theme: "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."— Presentation transcript:

1 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

2 Objective Perform channel transition seamlessly.

3 Fast Broadcasting (FB)

4 Data Padding

5 Data Padding (continued)

6 Arrangement of Channel Contents

7 Arrangement of Channel Contents (shifted)

8 Seamless Channel Transition Positive channel transition (PCT) Negative channel transition (NCT)

9 Positive Channel Transition

10 Negative Channel Transition

11 Bandwidth Waste

12 Average Waiting Time

13 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.

14 Conclusion The authors modify the FB scheme to achieve a seamless channel transition. The channel allocation policy is also formulated.

15 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

16 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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