On the architecture of erasure error recovery under strict delay constraints

Tan, Guoping; Herfet, Thorsten

doi:10.1109/ew.2008.4623882

Cited by 12 publications

(7 citation statements)

References 15 publications

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“…Kotuliakova and Polec [20] analyzes the throughput performance of pure and HARQ techniques, but neither correctly finds the effective packet loss rate nor dynamically adjusts the FEC redundancy according to network conditions. Tan and Herfet [21] tries to choose a best scheme to minimize the FEC redundancy, but fails to get the optimal throughput performance according to its equation.…”

Section: Related Workmentioning

confidence: 99%

Adaptive hybrid error correction model for video streaming over wireless networks

Tsai

Huang

et al. 2010

Multimedia Systems

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The Hybrid ARQ (HARQ) mechanism is the well-known error packet recovery solution composed of the Automation Repeat reQuest (ARQ) mechanism and the Forward Error Correction (FEC) mechanism. However, the HARQ mechanism neither retransmits the packet to the receiver in time when the packet cannot be recovered by the FEC scheme nor dynamically adjusts the number of FEC redundant packets according to network conditions. In this paper, the Adaptive Hybrid Error Correction Model (AHECM) is proposed to improve the HARQ mechanism. The AHECM can limit the packet retransmission delay to the most tolerable end-to-end delay. Besides, the AHECM can find the appropriate FEC parameter to avoid network congestion and reduce the number of FEC redundant packets by predicting the effective packet loss rate. Meanwhile, when the end-to-end delay requirement can be met, the AHECM will only retransmit the necessary number of redundant FEC packets to receiver in comparison with legacy HARQ mechanisms. Furthermore, the AHECM can use an Unequal Error Protection to protect important multimedia frames against channel errors of wireless networks. Besides, the AHECM uses the Markov model to estimate the burst bit error condition over wireless networks. The AHECM is evaluated by several metrics such as the effective packet loss rate, the error recovery efficiency, the decodable frame rate, and the peak signal to noise ratio to verify the efficiency in delivering video streaming over wireless networks.

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Section: Related Workmentioning

confidence: 99%

Adaptive hybrid error correction model for video streaming over wireless networks

Tsai

Huang

et al. 2010

Multimedia Systems

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“…In our earlier and recent work [6], [7] we have optimized a general hybrid error correction (HEC) architecture in a way that -under a given delay constraint and an allowed residual error-the Shannonbound is approached dynamically, as opposed to similar work [8]. We could prove that due to the fast changing channel capacity especially in wireless networks the efficiency of this adaptive error coding is far higher than that of purely FEC or retransmission based systems.…”

Section: Introductionmentioning

confidence: 95%

“…We assume that the best choice for each individual segment will depend on the respective PLR and delay behavior of the segment and the scenario, i.e. the target requirements, the number of sources and the interdependency of segments and links to the sources [6], [7].…”

Section: A Problem Statementmentioning

confidence: 99%

Predictable Reliability and Packet Loss Domain Separation for IP Media Delivery

Gorius

Miroll

Karl

et al. 2011

2011 IEEE International Conference on Communications (ICC)

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Abstract-Internet protocol (IP) based media delivery enables applications such as Voice over IP or, most recently, stereoscopic HD-TV. Suchlike transport of typically time-constrained media between two end-points has a number of important characteristics, both on the transport and content side. We focus on live streams of audio-visual data that are assumed as time-constrained and loss-tolerant. We aim at optimizing IP transport over heterogeneous networks by hybrid and loss domain separated error correction with residual error. Hybrid error correction (HEC) approaches the channel capacity dynamically and achieves predictable reliability and predictable delay (PRPD) when residual loss is tolerable, while loss domain separation applies optimally chosen HEC parameters to individual network segments. In this paper, we apply an atomic HEC coding unit to individual segments of network links between source and sink, and show by analysis and example how redundancy is distributed optimally.

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“…A combination of both schemes to the hybrid error-correction (e.g. HEC [13]) is also conceivable, especially in case of time and residual loss restricted transmission conditions. In contrast to the aforementioned mode an error-correction relay requires more resources as CPU power and larger buffers for a reliable application of error protection techniques.…”

Section: B Error-correcting Relaymentioning

confidence: 99%

Mediating Multimedia Traffic with Strict Delivery Constraints

Karl

Polishchuk

Herfet

et al. 2012

2012 IEEE International Symposium on Multimedia

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Abstract-Internet multimedia traffic currently occupies more than half of the total Internet traffic and it continues to expand tremendously. Targeting to meet strict constraints imposed by the requirements of real-time multimedia applications appropriate error correction techniques should be implemented within the data dissemination network. We propose to introduce multipurpose relay nodes called Mediators into several positions within the tree networks typical for multicasting and broadcasting scenarios. By utilizing the error-correction domain separation paradigm in combination with selective insertion of the supplementary data from parallel networks, when the corresponding content is available, the proposed mechanism reduces the total network load and improves scalability of multicast/broadcast transmission. We share our view on how the existing application frameworks could benefit from the incremental deployment of the proposed mechanism. Experimental results confirm suitability and applicability of our assumptions.

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On the architecture of erasure error recovery under strict delay constraints

Cited by 12 publications

References 15 publications

Adaptive hybrid error correction model for video streaming over wireless networks

Adaptive hybrid error correction model for video streaming over wireless networks

Predictable Reliability and Packet Loss Domain Separation for IP Media Delivery

Mediating Multimedia Traffic with Strict Delivery Constraints

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