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An active buffer management technique for providing interactive functions in broadcast video-on-demand systems

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4 Author(s)
Zongming Fei ; Dept. of Comput. Sci., Univ. of Kentucky, Lexington, KY, USA ; M. H. Ammar ; I. Kamel ; S. Mukherjee

Multicast delivery is an efficient approach to the provision of a video-on-demand (VoD) service. Interacting with the video stream is a desirable feature for users. However, it is a challenging task to provide the functionality in the multicast environment because a lot of users share multicast delivery channels. In this paper, we propose an active buffer management technique to provide interactive functions in broadcast VoD systems. In our scheme, the client can selectively prefetch segments from broadcast channels based on the observation of the play point in its local buffer. The content of the buffer is adjusted in such a way that the relative position of the play point is kept in the middle part of the buffer. Our simulations show that the active buffer management scheme can implement interactive actions through buffering with a high probability in a wide range of user interaction levels.

Published in:

IEEE Transactions on Multimedia  (Volume:7 ,  Issue: 5 )