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dc.contributor.authorAlonso Zárate, Jesús
dc.contributor.authorVerikoukis, Christos
dc.contributor.authorKartsakli, Elli
dc.contributor.authorCateura Díaz, Alejandro
dc.contributor.authorAlonso Zárate, Luis Gonzaga
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationAlonso Zárate, J; Verikoukis C; Kartsakli, E; Cateura Díaz, A; Alonso Zárate, L.G. A near-optimum cross-layered distributed queuing protocol for wireless LAN. IEEE Wireless Communications Magazine, 2008, vol.15, núm. 1, pàg. 48-55
dc.description.abstractDistributed Queuing Collision Avoidance (DQCA) is a distributed MAC protocol for WLAN systems that offers near optimum performance. The protocol implements a reservation scheme that ensures collision-free data transmissions for high traffic load and switches smoothly and automatically to a random access mechanism when the traffic load is light, improving the delay performance for this situation. In this article the DQCA protocol operation is thoroughly described, and its algorithm rules are given. Furthermore, an enhanced cross-layer scheduling mechanism is also proposed for inclusion in the protocol procedure. This mechanism employs a virtual priority function to reschedule transmissions according to a cross-layer design. Two possible configurations are described in this article by including a PHY-MAC dialog involving channel state information and the waiting time of the packets in the system, offering a trade-off between throughput maximization and fairness. The performance in terms of throughput and mean delay of DQCA and the two cross-layer schemes has been evaluated through simulations, and a significant enhancement over legacy IEEE 802.11 operation is achieved. The obtained results emphasize the advantages of the proposed schemes and the importance of cross-layer design in wireless communication systems.
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Comunicacions mòbils
dc.subject.lcshWireless LANs
dc.subject.otherChannel state information
dc.subject.otherComputer simulation
dc.subject.otherData transfer
dc.subject.otherNetwork protocols
dc.subject.otherTelecommunication traffic
dc.subject.otherWireless local area networks
dc.subject.otherIEEE 802.11
dc.titleA near-optimum cross-layered distributed queuing protocol for wireless LAN: medium access control protocols for wireless LANs
dc.subject.lemacXarxes d'àrea local sense fils (Xarxes d'ordinadors) -- Protocols
dc.contributor.groupUniversitat Politècnica de Catalunya. GRCM - Grup de Recerca en Comunicacions Mòbils
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.relation.projectidcttFIT 330220-2005-111
dc.relation.projectidcttFIT 330215-2007-8

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