Improving TCP performance over last-hop wireless networks for live video delivery

Radovanović, Igor; Verhoeven, Richard; Lukkien, Johan J.

doi:10.1109/tce.2008.4637599

Cited by 5 publications

(3 citation statements)

References 19 publications

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“…In general, the probability of a successful transaction results from accomplishing a successful transmission with a successful acknowledgment. Specifically this probability is defined as P ack, trans and given by P ack, trans = P ack|trans, low P trans|low P low +P ack|trans, high P trans|high P high (3) where P ack|trans, low and P ack|trans, high are the conditional probabilities of successful acknowledgment given a successful transmission for a channel in the low loss and high loss states, respectively, P trans|low and P trans|high are the conditional probabilities of successful transmission for a channel in the low loss and high loss states, respectively, and P low as well as P high indicate the state probabilities of the channel. Assuming behavioural symmetry and independence on both directions, i.e.…”

Section: Stream-based Transportmentioning

confidence: 99%

“…This protocol provides some minimal sequence and timing control but lacks of data integrity protection. In addition, and as mentioned in [3], Internet firewalls introduce intentional and non-intentional restrictions that usually prevent UDP packets from traversing them. This has to do with the fact that firewalls are typically configured to only allow Transmission Control Protocol (TCP) transported web traffic over the public Internet in order to minimise unwanted intrusion.…”

Section: Introductionmentioning

confidence: 99%

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Analytical model of stream transported media

Herrero

St-Pierre²

2017

IET Networks

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For transmission of packetised media, real-time communications rely on the real-time protocol (RTP). RTP traffic, however, is transmitted over datagram-based transport that allows fast delivery of media. Internet firewalls are typically configured to allow web friendly traffic that uses stream-based transport instead and, simultaneously as security measure, reject any other type of transport. A mechanism to overcome this limitation is by switching transport such that media frames that would be rejected by firewalls are transmitted on top of stream transport. In this study, a novel mathematical model that links application layer packet loss to bursty network packet loss in the context of fading channels characteristic of wireless communications is presented for both, datagram and stream transport. This model is compared with experimental scenarios applied to state-of-the-art speech codecs in order to obtain quality scores that can be correlated against theoretical loss probabilities.

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Section: Stream-based Transportmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analytical model of stream transported media

Herrero

St-Pierre²

2017

IET Networks

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“…Such enhancements are Snoop TCP [118] and SPLADE [119], the later being designed for real time multimedia applications, which use buffering and local retransmission techniques to shield the TCP layer from the wireless QoS variations.…”

Section: Lower Layersmentioning

confidence: 99%

Quality-Oriented Mobility Management for Multimedia Content Delivery to Mobile Users

Ciubotaru

Muntean

2012

Ubiquitous Multimedia and Mobile Agents

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The latest advances in wireless data access technologies and increased popularity of mobile computing have enabled the development of the future mobile Internet. The various wireless technologies and standards already developed or under development support the existence of a highly heterogeneous wireless communication environment in which mobile users access the network from diverse devices and exchange data of various types. In the context of such a heterogeneous wireless and mobile environment, maintaining certain level of Quality of Service required by some applications and consequently providing high user Quality of Experience is very challenging. This chapter analyzes the state of the art in quality-oriented mobility management in heterogeneous wireless environments in the context of mobile multimedia applications. Most important wireless access technologies and multimedia support systems and protocols for wireless delivery are presented, while requirements for quality-oriented mobility management are identified. Handover management is discussed as the component of the mobility management system with the greatest impact on the quality as measured by the user. Finally a novel multimedia mobility management framework is presented which aims at maintaining high user perceived quality while efficiently exploiting all the communication resources available in a heterogeneous wireless environment.

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