Broadcasting video with the knowledge of user delay preference

Broadcasting video with the knowledge of user delay preference

In designing a video broadcasting system, the delay preference of a user is traditionally regarded as unknown. In fact, such preference can be known upon user’s arrival by employing some techniques such as i) delay-dependent charging, where users are offered different levels of pay-per-view (PPV) depending on the maximum delay they are willing to tolerate; or ii) reservation, where a user speci...

Client buffering techniques for scalable video broadcasting over broadband networks with low user delay

In traditional near-VOD (NVOD), the number of streams required is high if the user delay goal is low (say, 2 minutes). In this paper, we study the use of client buffering to reduce such bandwidth requirement. We first study a scheme based on streaming approach termed “join-and-stream” (JAS), which broadcasts a movie in a staggered manner and uses short unicast streams to recover the time differ...

A fixed-delay broadcasting protocol for video-on-demand

Broadcasting protocols reduce the cost of video-ondemand services by distributing more efficiently videos that are likely to be simultaneously watched by many viewers. Rather than answering individual customer requests, they broadcast the contents of each video according to a fixed schedule. We present a fixed-delay pagoda broadcasting protocol that requires all users to wait for a small fixed ...

the washback effect of discretepoint vs. integrative tests on the retention of content in knowledge tests

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User Preference on Artificial Reverberation and Delay Time Parameters