The NIProxy: a Flexible Proxy Server Supporting Client Bandwidth Management and Multimedia Service Provision

Wijnants, Maarten; Lamotte, Wim

doi:10.1109/wowmom.2007.4351779

Cited by 7 publications

(30 citation statements)

References 13 publications

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“…The Network Intelligence Proxy (NIProxy) [12] is a software entity that can be integrated at different locations in the topology of existing transportation networks and which strives to enhance the network's performance with regard to Quality of Experience (QoE) provision for users of multimedia services and applications 1 . As its name implies, it attempts to satisfy this objective by incorporating different types of awareness or context in the transportation network so that effective and efficient delivery of content to clients becomes possible.…”

Section: Overview and Objectivesmentioning

confidence: 99%

“…In particular, the NIProxy expects the application to relay application-related information to it. To facilitate this process and to reduce the amount of modification required to the application software, a generic, reusable support library called the Network Intelligence Layer (NILayer) is provided [12]. The NILayer exports an API that allows developers to provide the NIProxy with context pertaining to their application with minimal effort.…”

Section: Enabling Context-sensitive Networkingmentioning

confidence: 99%

“…Complementary to network traffic shaping, the NIProxy is also equipped with multimedia service provision functionality [12]. In other words, the NIProxy is able to exert services on network flows containing multimedia content on behalf of its connected clients.…”

Section: Multimedia Service Provisionmentioning

confidence: 99%

“…The NIProxy's multimedia service provision functionality is implemented using a plug-in approach [12]. Each service corresponds to a NIProxy plug-in that is (un)loaded dynamically as it becomes needed (obsolete).…”

Section: Multimedia Service Provisionmentioning

confidence: 99%

“…This paper revolves around the NIProxy, a network intermediary which can be integrated in the Internet (and other IP-based networks) to enhance the network's functionality and performance with regard to multimedia services and applications [12]. The NIProxy is under continuous development and is consequently constantly evolving in terms of provided features and functionality.…”

Section: Introductionmentioning

confidence: 99%

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Effective and Resource-Efficient Multimedia Communication Using the NIProxy

Wijnants

Lamotte

2009

2009 Eighth International Conference on Networks

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Adequate and resource-efficient support for multimedia communication in transportation networks is rapidly gaining importance. At the same time, computer networks are being faced with increasing degrees of diversity, for instance in terms of client terminal specifications. We are therefore convinced that any next-generation network should be able to successfully address both these issues. This paper reports on our continued development of the NIProxy, a network intermediary which strives to improve the features and performance of IP-based networks with regard to multimedia communication in an attempt to optimize the experience provided to users of distributed applications. In particular, we describe how the NIProxy system was extended with support for upstream network traffic shaping as well as outbound multimedia service provision. The implications of these enhancements are discussed and we demonstrate and validate, through experimental evaluation, the new possibilities they entail and their added value in terms of user experience optimization.

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Section: Overview and Objectivesmentioning

confidence: 99%

Section: Enabling Context-sensitive Networkingmentioning

confidence: 99%

Section: Multimedia Service Provisionmentioning

confidence: 99%

Section: Multimedia Service Provisionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effective and Resource-Efficient Multimedia Communication Using the NIProxy

Wijnants

Lamotte

2009

2009 Eighth International Conference on Networks

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Managing client bandwidth in the presence of both real-time and non real-time network traffic

Wijnants¹,

Lamotte²

2008

2008 3rd International Conference on Communication Systems Software and Middleware and Workshops (COMSWARE '08)

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Abstract-Managing client downstream bandwidth is an issue that is rapidly gaining in importance due to the increasing extent to which multimedia content is being exploited in networked applications. Depending on its characteristics, this multimedia content is exchanged in either a real-time or non real-time manner. In this paper, we present the NIProxy, a network intermediary which introduces different types of intelligence in the transportation network in an attempt to improve the Quality of Experience (QoE) provided to users of networked applications. In particular, we concentrate on the NIProxy's bandwidth distribution functionality and we report on how support for non realtime network traffic was incorporated through the adoption of buffering as well as rate control techniques. Using representative experimental results, we demonstrate the NIProxy's capability to successfully manage client downstream bandwidth in the presence of both real-time and non real-time network traffic. In addition, the presented experimental results are compared to the default scenario in which the NIProxy is not involved, revealing a considerable improvement in the user's QoE in case the NIProxy's bandwidth management functionality is leveraged.

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FEC-Integrated Network Traffic Shaping Using the NIProxy

Wijnants

Lamotte

2009

2009 First International Conference on Emerging Network Intelligence

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Abstract-Optimizing the satisfaction of users of distributed applications is an important yet non-trivial task. Data corruption incurred during network transmission plays a significant role in this context since it is likely to result in user frustration. As a countermeasure, Forward Error Correction (FEC) schemes complement source data with redundant information to enable data recovery at destination-side. This paper discusses the inclusion of adaptive parity-based FEC support in the NIProxy, a context-aware network intermediary which introduces network traffic shaping and multimedia service provision functionality in IP-based networks as tools to influence the user experience. Since FEC coding increases the load on the transportation network, an integrated approach with the NIProxy's network traffic shaping mechanism was adhered to enable deliberate FEC control and to guarantee the bandwidth overhead it introduces is justified. Representative experimental results confirm the validity of our approach and prove that, if applied in a well-considered manner, FEC coding is able to beneficially affect user experience and is hence a valuable addition to the NIProxy's feature list.

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The NIProxy: a Flexible Proxy Server Supporting Client Bandwidth Management and Multimedia Service Provision

Abstract: We present the NIProxy, a flexible network intermediary which aims to improve the Quality of Experience (QoE)

Cited by 7 publications

References 13 publications

Effective and Resource-Efficient Multimedia Communication Using the NIProxy

Effective and Resource-Efficient Multimedia Communication Using the NIProxy

Managing client bandwidth in the presence of both real-time and non real-time network traffic

FEC-Integrated Network Traffic Shaping Using the NIProxy

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