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Cross Layer QoS Guarantees in Multiuser WLAN Systems

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Abstract

The use of real-time delay-sensitive applications in wireless systems has significantly increased during the last years. Consequently, the demand to guarantee certain Quality of Service (QoS) is a challenging issue for the system’s designers. A cross-layer based dynamically tuned queue length scheduler is presented in this paper, for the Downlink of multiuser WLAN systems with heterogeneous traffic requirements. An opportunistic scheduling algorithm is applied, while users from higher priority traffic classes are prioritized. A trade-off between the throughput maximization of the system and the guarantee of the users QoS requirements is obtained. Therefore the length of the queue is dynamically adjusted to select the appropriate conditions based on the operator requirements.

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Authors and Affiliations

  1. University of Jordan, Amman, Jordan

    Nizar Zorba

  2. Technical University of Catalonia, Barcelona, Spain

    Ana I. Pérez-Neira

  3. Infineon Technologies, Munich, Germany

    Andreas Foglar

  4. Telecommunications Technological Center of Catalonia (CTTC), Barcelona, Spain

    Christos Verikoukis

Authors
  1. Nizar Zorba
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  2. Ana I. Pérez-Neira
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  3. Andreas Foglar
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  4. Christos Verikoukis
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Corresponding author

Correspondence to Christos Verikoukis.

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Zorba, N., Pérez-Neira, A.I., Foglar, A. et al. Cross Layer QoS Guarantees in Multiuser WLAN Systems. Wireless Pers Commun 51, 549–563 (2009). https://doi.org/10.1007/s11277-009-9750-z

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  • DOI: https://doi.org/10.1007/s11277-009-9750-z

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