Reducing Channel Zapping Time in IPTV Based on User's Channel Selection Behaviors

Lee, Chang Kyu; Hong, Chang-Ki; Lee, Kang Yong

doi:10.1109/tbc.2010.2051494

Cited by 48 publications

(30 citation statements)

References 15 publications

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“…Despite much use of the Markov process in user behavior modeling (see, for examples, Branch et al [1999], Gopalakrishnan et al [2010], and Lee et al [2010]), we find that the user transition behavior between the modes live TV, VoD, and offline is hardly Markov. Due to complex non-Markovian characteristics, it is not easy to model interactive behavior of a joint IPTV system.…”

Section: Introductionmentioning

confidence: 88%

“…Given that much previous work has assumed user interactive behavior as Markov (see, for examples, Branch et al [1999], Gopalakrishnan et al [2010], and Lee et al [2010]), we next study whether the sojourn times in each mode is independent. We collect the time a user is in a mode (session) before switching and calculate the correlation coefficients between them.…”

Section: Interactive Mode Switching Behaviormentioning

confidence: 99%

See 1 more Smart Citation

Dissecting User Behaviors for a Simultaneous Live and VoD IPTV System

Liu

Cui

Chan

et al. 2014

ACM Trans. Multimedia Comput. Commun. Appl.

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IPTV services deployed nowadays often consist of both live TV and Video-on-Demand (VoD), offered by the same service provider to the same pool of users over the same managed network. Understanding user behaviors in such a setting is hence an important step for system modelling and optimization. Previous studies on user behavior on video services were on either live TV or VoD.For the first time, we conduct an in-depth large-scale behavior study for IPTV users offering simultaneously live TV and VoD choices at the same time. Our data is from the largest IPTV service provider in China, offering hundreds of live channels and hundreds of thousands of VoD files, with traces covering more than 1.9 million users over a period of 5 months. This large dataset provides us a unique opportunity to cross-compare user viewing behaviors for these services on the same platform, and sheds valuable insights on how users interact with such a simultaneous system.Our results lead to new understanding on IPTV user behaviors which have strong implications on system design. For example, we find that the average holding time for VoD is significantly longer than live TV. live TV users tend to surf more. However, if such channel surfing is discounted, the holding times of both services are not much different. While users in VoD tend to view HD longer, channel popularity for live TV is much less dependent on its video quality. In contrast to some popular assumptions on user interactivity, the transitions among live TV, VoD, and offline modes are far from a Markov model.

show abstract

Section: Introductionmentioning

confidence: 88%

Section: Interactive Mode Switching Behaviormentioning

confidence: 99%

Dissecting User Behaviors for a Simultaneous Live and VoD IPTV System

Liu

Cui

Chan

et al. 2014

ACM Trans. Multimedia Comput. Commun. Appl.

View full text Add to dashboard Cite

show abstract

“…After waiting for the IPTV content of the requested channel to be delivered, the STB waits for a decodable frame, called an Intra-coded frame (I-frame). e requested channel is ready to be displayed on the TV set once the requested channel is delivered to the STB of the subscriber [22,29].…”

Section: Multicastmentioning

confidence: 99%

Fast Channel Navigation of Internet Protocol Television Using Adaptive Hybrid Delivery Method

Adeliyi

Olugbara

2018

Journal of Computer Networks and Communications

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e Internet protocol television brought seamless potential that has revolutionized the media and telecommunication industries by providing a platform for transmitting digitized television services. However, zapping delay is a critical factor that affects the quality of experience in the Internet protocol television. is problem is intrinsically caused by command processing time, network delay, jitter, buffer delay, and video decoding delay. e overarching objective of this paper is to use a hybrid delivery method that agglutinates multicast-and unicast-enabled services over a converged network to minimize zapping delay to the bare minimum. e hybrid method will deliver Internet protocol television channels to subscribers using the unicast stream coupled with differentiated service quality of experience when zapping delay is greater than 0.43 s. is aids a faster transmission by sending a join message to the multicast stream at the service provider zone to acquire the requested channel. e hybrid method reported in this paper is benchmarked with the state-of-the-art multicast stream and unicast stream methods. Results show that the hybrid method has an excellent performance by lowering point-to-point queuing delay, end-to-end packet delay, and packet variation and increasing throughput rate.

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“…Technique 1. Prejoin the most likely next channel based on user behavior or the adjacent channel in parallel with the current channel [5][6][7]. This way, the STB will decode the stream of the new channels very quickly since it has already received the I-frame before switching the channel.…”

Section: Channel Change Delaymentioning

confidence: 99%

A Novel Approach to Reduce the Unicast Bandwidth of an IPTV System in a High-Speed Access Network

Khabbiza

Alami

Qjidaa

2017

International Journal of Digital Multimedia Broadcasting

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Channel change time is a critical quality of experience (QOE) metric for IP-based video delivery systems such as Internet Protocol Television (IPTV). An interesting channel change acceleration scheme based on peer-assisted delivery was recently proposed, which consists of deploying one FCC server (Fast Channel Change Server) in the IP backbone in order to send the unicast stream to the STB (Set-Top Box) before sending the normal multicast stream after each channel change. However, deploying such a solution will cause high bandwidth usage in the network because of the huge unicast traffic sent by the FCC server to the STBs. In this paper, we propose a new solution to reduce the bandwidth occupancy of the unicast traffic, by deploying the FCC server capabilities on the user STB. This means that, after each channel change request, the STB will receive the unicast traffic from another STB instead of the central server. By using this method, the unicast traffic will not pass through the IP network; it will be a peer-to-peer communication via the Access Network only. Extensive simulation results are presented to demonstrate the robustness of our new solution.

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Reducing Channel Zapping Time in IPTV Based on User's Channel Selection Behaviors

Cited by 48 publications

References 15 publications

Dissecting User Behaviors for a Simultaneous Live and VoD IPTV System

Dissecting User Behaviors for a Simultaneous Live and VoD IPTV System

Fast Channel Navigation of Internet Protocol Television Using Adaptive Hybrid Delivery Method

A Novel Approach to Reduce the Unicast Bandwidth of an IPTV System in a High-Speed Access Network

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