Title:
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On centralized schedulers for 802.11e WLANs distribution versus grouping of resources allocation
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Author:
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Mur, D.C.; Pérez Costa, Xavier; Marchenko, V.; Sallent Ribes, Sebastián
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Telemàtica; Universitat Politècnica de Catalunya. BAMPLA - Disseny i Avaluació de Xarxes i Serveis de Banda Ampla |
Abstract:
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Wireless LAN is becoming a pervasive wireless access technology that can be found in almost any mobile device such
as laptops, PDAs, portable game consoles and mobile phones. Each of these groups of devices have a different set of
requirements according to their intended use and applications but most of them share two main requirements: QoS support
to satisfy applications’ demands and power saving functionality to achieve an operating time according to users’ expectations.
IEEE 802.11e defines two centralized solutions in order to address these problems: Hybrid Coordination Channel Access
(HCCA) for QoS and Scheduled Automatic Power Save Delivery (S-APSD) for power saving. The focus of our work
in this paper is the analysis and evaluation of a proposed centralized scheduler that makes use of both aforementioned
IEEE 802.11e QoS and power saving solutions. Our contributions are as follows: (i) Design and analytical modeling of a
proposed centralized scheduler (DRA) that maximizes the minimum distance between the resource allocations with pseudopolynomial
complexity, (ii) Extensive performance evaluation of the QoS and power saving benefits of the Distribution
proposal (DRA) as compared to a generic Grouping one (GRA), and (iii) Evaluation of the complexity and scalability of
the proposal to assess its feasibility in practice. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Comunicacions mòbils -Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors -Wireless LANs -Mobile communication systems -distributed allocation -HCCA -power saving -QoS -wireless LAN -Xarxes locals sense fil Wi-Fi -Comunicacions mòbils, Sistemes de |
Rights:
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Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
Document type:
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Article - Published version Article |
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