On the definition, modelling, and implementation of quality of service (QoS) in distributed multimedia systems

Malamos, Athanasios G.; Malamas, Elias N.; Varvarigou, Theodora; Ahuja, S. R.

doi:10.1109/iscc.1999.780929

Cited by 9 publications

(7 citation statements)

References 8 publications

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“…Most of the QoS adaptation models (Campbell and Coulson 1997;Campbell et al 1995;Cowan et al 1995;Hafid and Bochmann 1997;Malamos et al 1999Malamos et al , 2001Malamos et al , 2002 achieve application adaptation control through provider-user negotiations, where the user is informed about the network constraints and the quality levels that could be supported and decides about the preferred quality. However, these methods require long-term resource reservations to implement, which is feasible but cannot be supported by the most extensively used networks.…”

Section: Qos Adaptation Modelmentioning

confidence: 99%

“…The necessity of satisfactoryquality service delivery has introduced QoS as a fundamental part of various protocols and mechanisms that enable computing and communication systems. Service quality performance is a composition of the performance of certain QoS characteristics that relate to the service, the infrastructure resources (end-system, network), and the user requirements (Malamos et al 2002). These characteristics tune the level of quality provided by the whole system.…”

Section: Introductionmentioning

confidence: 99%

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Quality-of-Service Adaptive Control of Multimedia Services in Short-Term Resource Reservation Networks

Rovithakis

Malamos

Varvarigou

et al. 2005

Cybernetics and Systems

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Present multimedia services are provided through a heterogeneous set of networks. Because of the heterogeneity of the networks, long-term resource availability guarantees are difficult to obtain. Consequently, even if the resource requirements throughout the service could be accurately mapped, it would not be feasible to provide overall performance guarantees. Application adaptation arises as an appropriate solution for quality-of-service assurance in such dynamic service infrastructures. Application adaptation basically involves adapting application characteristics according to the network resource availability. We formulate the problem of adaptation of multimedia applications to network infrastructure as well as to user-and application-imposed constraints and preferences. We benefit from the good approximation, identification, and control capabilities of recurrent high-order neural networks and we introduce an algorithm that guarantees the resource constraints of the network infrastructure will not be violated while maintaining the user and application requirements.

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Section: Qos Adaptation Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quality-of-Service Adaptive Control of Multimedia Services in Short-Term Resource Reservation Networks

Rovithakis

Malamos

Varvarigou

et al. 2005

Cybernetics and Systems

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“…QoS services for the end user [1], [2]. Development of modern Internet services, such as Internet Protocol Television (IPTV), cloud computing and social networking has led to exponential growth of Internet traffic.…”

Section: Introductionmentioning

confidence: 99%

Analysis of WRR scheduling algorithm frame size impact on CQ switch performance

2013

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In this paper we study the influence of Weighted Round Robin (WRR) scheduling algorithm frame size to the performance of Crosspoint Queued (CQ) crossbar switch. In order to show that throughput and cell delay can be adjusted with appropriate WRR frame size, we analyzed switch for different values of frame size and under the unbalanced bursty traffic. We show that WRR scheduling algorithm achieve throughput similar to Output Queued switch when frame size is low. Also, with an increase of the frame size, the delay decreases.

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“…The requirement results in intensive and vast research for QoS-related issues. The QoS-related issues include the design of the new programming APIs for QoS supporting [2], the resource reservation mechanism [3,4,5], the QoS management architecture [6,7,8,9], and QoS supporting for the wireless environment [10,11] etc. Since the network behavior is dynamic and the static allocation strategy (e.g., peak rate assignment for bandwidth requirement) could not achieve the efficiency of the packet switching network (i.e., the gain of the statistical multiplexing), the adaptive network QoS for multimedia transmissions was suggested.…”

Section: Introductionmentioning

confidence: 99%

“…In other words, adaptive network QoS also requires the adaptability of the application [6,7,8,9,10,11].…”

Section: Introductionmentioning

confidence: 99%

Design of the application-level protocol for synchronized multimedia sessions

Yang

2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333)

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Abstract-An application-level protocol that integrates the concept of application level framing and the network-aware applications is proposed in this paper to support the network applications with the synchronized multimedia session. The application model and the application QoS for the protocol are also proposed. The application QoS for each connection includes the maximum allowable ratio of the lost medium unit and the delay bound of the medium unit associated with the maximum allowable late rati o. The control mechanisms that support the application protocol include error control, real-time control for individual connection within the session, and synchronization control for the multimedia session. Moreover, the application protocol with the control mechanisms provides a quantitative expression for the quality of the synchronized session in terms of the QoS parameters. Simulation results show the effectiveness of the protocol.

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On the definition, modelling, and implementation of quality of service (QoS) in distributed multimedia systems

Cited by 9 publications

References 8 publications

Quality-of-Service Adaptive Control of Multimedia Services in Short-Term Resource Reservation Networks

Quality-of-Service Adaptive Control of Multimedia Services in Short-Term Resource Reservation Networks

Analysis of WRR scheduling algorithm frame size impact on CQ switch performance

Design of the application-level protocol for synchronized multimedia sessions

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