نتایج جستجو برای: packet loss

تعداد نتایج: 481138  

2008
Artur Janicki Bartlomiej Ksiezak

In this paper the authors propose an algorithm for packet loss concealment (PLC) in transmission over IP-based networks with high packet loss rate. The algorithm is a sender-receiver-based extension of ANSI T1.521a Annex B PLC standard for G.711 voice codec. It consists in adding to a transmitted packet redundant parameters describing speech signal in another packet. Efficiency of the proposed ...

2000
Mihaela van der Schaar Hayder Radha C. Dufour

In this paper, we evaluate the packet loss resilience of the recently developed MPEG-4 Fine-Granular-Scalability (FGS) video coding method for Internet streaming applications. Since unrecoverable packet losses are very common over the Internet, the focus of this study is to determine how robust the MPEG-4 FGS coding tool is under unrecoverable IP packet-losses over a wide range of connection qu...

2004
Kazuhiro Kondo Kiyoshi Nakagawa

We proposed and evaluated a speech packet loss concealment method, which predicts lost segment from speech included in both packets before and after the lost packet. The lost segments are predicted by recursively using linear prediction both in the forward direction from the packet preceding the loss, as well as in the backward direction from the packet succeeding the lost segment. The predicte...

2008
Ying Lin Liang Ge Yueheng Sun

Because of the traditional methods of video error checking are unfitted to the network environment in which the packet loss rate frequently changes, this paper proposes an adaptive error checking solution on the basis of estimation of the change trend of packet-loss rate. By setting the threshold value of packet-loss rate, the solution takes advantage of improved auto repeat request supported b...

2001
Kouhei Fujimoto Shingo Ata Masayuki Murata

A packet transmission delay is an important quality characteristic for various applications including real-time and data applications. In particular, it is necessary to investigate not only a whole distribution of the packet transmission delay, but also the tail part of the distribution, in order to detect the packet loss. In this paper, we analyze the characteristics of the tail part of packet...

2005
Rajashree Paul Ljiljana Trajković Simon Fraser

One of the main reasons for TCP's degraded performance in wireless networks is TCP's interpretation that packet loss is caused by congestion. However, in wireless networks, packet loss occurs mostly due to high bit error rate, packet corruption, or link failure. TCP performance in wired/wireless networks may be substantially improved if the cause of packet loss could be distinguished and approp...

2017
Yi bin Hou Jin Wang

The Internet of things, including Internet technology, including wired and wireless networks. Internet of Things and the Internet is the relationship between the parent and the child. In this paper, we aim to study the Investigation on the network packet loss’s long-range dependence and QOE and gain a good result and conclusion. In order to better establish no-reference video quality assessment...

2003
Jörgen Olsén

Various interpretations of the term packet loss rate is investigated. We compare different ways of estimating packet loss rate from simulations and also examine the applicability of common well understood simple queuing models. We show that using these queuing models to successfully estimate packet loss rate in a network with TCP traffic requires care. A network with independent sources perform...

2006
Victor O.K. Li

Transmission Control Protocol (TCP) performs well in traditional wired networks where the packet loss rate is low. However, in heterogeneous wired/wireless networks, the high packet loss rate over wireless links may result in excessive invocation of the congestion control algorithm, thus deteriorating the performance of TCP. In this paper, a novel localized link layer retransmission protocol, c...

2009
Ales Friedl Sven Ubik Alexandros Kapravelos Michalis Polychronakis Evangelos P. Markatos

Realistic and accurate packet loss measurement of production traffic has been challenging, since the frequently-used active monitoring approaches using probe packets cannot capture the packet loss experienced by the traffic of individual user applications. In this paper, we present a new approach for the accurate measurement of the packet loss rate faced by actual production traffic based on pa...

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