학술논문
ACCESS NODE WITH CACHING FUNCTION FOR VIDEO CHANNELS
Document Type
Patent
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Abstract
An access node (101) according to the invention is able to multicast a plurality of video channels to subscribers, and to cache N of these video channels. To select the N video channels for caching, the access node (101) determines for each video channel a weighted sum of the zapping rate rk to channel k and the channel popularity πk. The N video channels that have the highest values for this weighted sum are cached by the access node (101).