Rapid Channel Zapping for IPTV Broadcasting with Additional Multicast Stream

Sasaki, Chikara; Tagami, Atsushi; Hasegawa, Takeshi; Ano, Shigehiro

doi:10.1109/icc.2008.338

Cited by 18 publications

(14 citation statements)

References 2 publications

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“…Sasaki et al [1], for instance, propose the STB to receive an additional multicast stream together with the original stream. This is simply a delayed version of the original stream, resulting in the buffering time being halved.…”

Section: Proxy Server With Boost Streamsmentioning

confidence: 99%

“…Users already experience this today in digital cable TV networks, but it is an even more severe problem in IPTV, since zapping times are also affected by network delay. Users zapping in IPTV usually experience a couple of seconds' delay or more [1]. Kooij et al [5] presented a study recently where they concluded that to achieve an acceptable quality of service the channel change time needs to be below 0.43 ms.…”

Section: Channel Change Time Componentsmentioning

confidence: 99%

“…This is the delay between the time the user switches to a particular TV channel and the time when the content is displayed on the TV screen. This delay can add up to 2 s or more [1], and its main culprits are stream synchronisation and buffering of the media streams [2][3][4]. It is known that this figure should be below 430 ms to guarantee an acceptable user experience [5], so this is a major concern for IPTV service providers that want to compete in this market.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reducing channel change delay in IPTV by predictive pre-joining of TV channels

Ramos

Crowcroft

Gibbens

et al. 2011

Signal Processing: Image Communication

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Section: Proxy Server With Boost Streamsmentioning

confidence: 99%

Section: Channel Change Time Componentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reducing channel change delay in IPTV by predictive pre-joining of TV channels

Ramos

Crowcroft

Gibbens

et al. 2011

Signal Processing: Image Communication

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“…[6], [5] and Sasaki et al [16] have addressed this issue with retransmission schemes. In both works, each channel stream is buffered, from the most recent RAP, by retransmission servers, and is retransmitted to a client just joining the channel.…”

Section: A Related Workmentioning

confidence: 98%

On zap time minimization in IPTV networks

Long

Radhakrishnan

Karabük

et al. 2012

2012 International Conference on Computing, Networking and Communications (ICNC)

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Digital television systems have a clear disadvantage relative to analog systems in users' quality of experience, most notably in the time required to change channels, or zap time. The goal of this research is to improve the performance of a multicasting IPTV network, both in user experience and in resource consumption. We formulate the problem of assigning IPTV clients to servers as an integer programming model, in variants which minimize channel-change times, overall network capacity consumption, or both. This problem is shown to be computationally hard, and the performance of the models is tested on problems of different sizes. Polynomial-time heuristics are presented which address a relaxed version of the problem, and the performance of these heuristics is measured.

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“…These fall into several broad categories. There are solutions based on video coding and processing [3,4] as well as solutions at the network level [5][6][7][8][9]. Hybrid proposals that combine video and network-level solutions also exist [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

A Unified Approach for Repairing Packet Loss and Accelerating Channel Changes in Multicast IPTV

Begen

Glazebrook

Steeg

2009

2009 6th IEEE Consumer Communications and Networking Conference

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In multicast-based IPTV distribution networks, when an IPTV viewer tunes to a new channel, the IP set-top box (STB) joins a new multicast session. Upon join, the IP STB needs to acquire and parse certain key information before it can process any data sent in the multicast session. Depending on the join time, length of the key information repetition interval, size of the key information as well as the application and transport properties, the time lag before the IP STB can usefully consume the multicast data, which we refer to as the synchronization delay, varies and may be large. This is an undesirable phenomenon and degrades the quality of experience perceived by the IPTV viewers. In this study, we describe a unified standards-based approach that can be used both to repair lost packets in real time and reduce the synchronization delay.

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Rapid Channel Zapping for IPTV Broadcasting with Additional Multicast Stream

Cited by 18 publications

References 2 publications

Reducing channel change delay in IPTV by predictive pre-joining of TV channels

Reducing channel change delay in IPTV by predictive pre-joining of TV channels

On zap time minimization in IPTV networks

A Unified Approach for Repairing Packet Loss and Accelerating Channel Changes in Multicast IPTV

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