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dc.contributor.authorLópez Aguilera, M. Elena
dc.contributor.authorCasademont Serra, Jordi
dc.contributor.authorCotrina Navau, Josep
dc.contributor.authorRojas Espinosa, Alfonso
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Telemàtica
dc.date.accessioned2007-12-17T17:10:04Z
dc.date.available2007-12-17T17:10:04Z
dc.date.created2005
dc.date.issued2005
dc.identifier.citationLópez-Aguilera, E.; Casademont, J.; Cotrina, J... et al. Enhancement proposal for WLAN IEEE 802.11e: desynchronization of its working procedure. A: 14th IEEE Workshop on Local and Metropolitan Area Networks, 2005. LANMAN 2005. New York: Institute of Electrical and Electronic Engineers, 2005, 6 pp. --
dc.identifier.isbn0-7803-9565-4
dc.identifier.urihttp://hdl.handle.net/2117/1433
dc.description.abstractUp to the present, several studies have been performed in order to provide prioritization of stations or classes of service for WLAN IEEE 802.11. The IEEE 802.11e draft specification aims to extend the original IEEE 802.11 MAC protocol to support QoS. One of the mechanisms for prioritizing traffic is the assignment of different AIFS times to each priority level. Nevertheless, the AIFSs employed are separated by values that are multiples of the slot time. Therefore, due to the fact that the backoff time counter is slotted, the different priority levels can attempt for transmission simultaneously. In this paper, we evaluate the performance of the IEEE 802.11e when its working procedure is desynchronized: we avoid that stations belonging to different priority levels attempt for transmission at the same time. We assign AIFS times that are separated by values that are not multiples of the slot time, in order to avoid collisions between the different priority levels. We present a mathematical model and simulation results for analyzing the performance of the differentiation mechanism proposed. The results show that it solves the strangulation of low priority traffic, fact that occurs in IEEE 802.11e EDCA. Moreover, this proposal leads to a significant increase in the performance of the system as a whole.
dc.format.extent6
dc.language.isoeng
dc.publisherInstitute of Electrical and Electronics Engineers
dc.relation.ispartof14th IEEE Workshop on Local and Metropolitan Area Networks, 2005. LANMAN 2005
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors::Protocols de comunicació
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors::Xarxes d'àrea local
dc.subject.lcshIEEE 802.11 (Standard)
dc.subject.lcshWireless LANs
dc.subject.otherWLAN
dc.subject.otherIEEE 802.11
dc.subject.otherMAC
dc.subject.otherDifferentiation
dc.subject.otherAIFS
dc.titleEnhancement proposal for WLAN IEEE 802.11e: desynchronization of its working procedure
dc.typeConference report
dc.subject.lemacWLAN (Xarxes d'ordinadors)
dc.subject.lemacIEEE 802.11 (Protocol)
dc.contributor.groupUniversitat Politècnica de Catalunya. WNG - Grup de xarxes sense fils
dc.date.end2005-09-21
dc.date.start2005-09-18
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access


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