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Managing QoS for Multimedia Applications in the Differentiated Services Environment

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Abstract

The overall quality of network connections has a significant impact on the performance of networked applications. As a result, Quality-of-Service (QoS) management for networked multimedia applications over IP is a significant and immediate challenge. While differentiated services (DiffServ) provide a sense of resource allocation and QoS, they do not guarantee QoS. This paper presents the design, implementation and evaluation of a content-aware bandwidth broker (CABB) that manages QoS for multimedia applications in a DiffServ environment. CABB allocates network resources to multimedia flows based on client requirements, the adaptability of the application, and its tolerance to network level parameters such as bandwidth, delay, and latency. It has been implemented and evaluated using the NS-2 simulator toolkit. Evaluations show that CABB improves network resource allocations and increases overall throughput. Furthermore multimedia application flows are better managed and controlled, improving perceived QoS and avoiding possible congestion at core routers.

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Authors and Affiliations

  1. Dept. of Electrical and Computer Engineering, Rutgers University, The Applied Software Systems Laboratory (TASSL), 94 Brett Road, Piscataway, New Jersey, 08854

    Manish Mahajan & Manish Parashar

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  1. Manish Mahajan
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  2. Manish Parashar
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Correspondence to Manish Mahajan.

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Mahajan, M., Parashar, M. Managing QoS for Multimedia Applications in the Differentiated Services Environment. Journal of Network and Systems Management 11, 469–498 (2003). https://doi.org/10.1023/B:JONS.0000005474.43773.d8

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  • DOI: https://doi.org/10.1023/B:JONS.0000005474.43773.d8

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