Contiguous Frequency-Time Resource Allocation and Scheduling for Wireless OFDMA Systems with QoS Support

The orthogonal frequency divisionmultiple access (OFDMA) scheme has been selected as a potential candidate formany emerging broadband wireless access standards. In this paper, a new joint scheduling and resource allocation scheme is proposed for the OFDMA systems using contiguous subcarrier permutat...

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Autores: Gutiérrez González, Ismael, Bader, Faouzi, Aquilué de Pedro, Ricard, Pijoan Vidal, Joan Lluís
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2009
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:20.500.14342/3326
Acceso en línea:http://hdl.handle.net/20.500.14342/3326
http://doi.org/10.1155/2009/134579
Access Level:acceso abierto
Palabra clave:Telecomunicació de banda ampla, Sistemes de
Multiplexatge per divisió de freqüència
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oai_identifier_str oai:recercat.cat:20.500.14342/3326
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network_name_str España
spelling Contiguous Frequency-Time Resource Allocation and Scheduling for Wireless OFDMA Systems with QoS Support Gutiérrez González, Ismael Bader, Faouzi Aquilué de Pedro, Ricard Pijoan Vidal, Joan Lluís Telecomunicació de banda ampla, Sistemes de Multiplexatge per divisió de freqüència The orthogonal frequency divisionmultiple access (OFDMA) scheme has been selected as a potential candidate formany emerging broadband wireless access standards. In this paper, a new joint scheduling and resource allocation scheme is proposed for the OFDMA systems using contiguous subcarrier permutation. The proposed resource allocation algorithm provides contiguous sets of frequency-time resource units following a rectangular shape yielding a reduction on the required burst signalling. The joint scheduling and resource allocation process is divided into two phases: the QoS requirements fulfilment and the input buffers emptying status. For each phase, a specific prioritization function is defined in order to obtain a trade-off between the fairness and the spectral efficiency maximization. The new prioritization scheme provides a reduction of 50% of the 99th percentile from the delivered packets delay in case of non real-time services, and 30% of the packet loss rate in case of real-time services compared to the proportional fair scheduling function. On the other hand, it is also demonstrated that using the rectangular data packing algorithm, the number of required bursts per frame can be reduced up to a few tenths without compromising the performance. Hindawi Publishing Corporation http://hdl.handle.net/20.500.14342/3326 http://doi.org/10.1155/2009/134579
title Contiguous Frequency-Time Resource Allocation and Scheduling for Wireless OFDMA Systems with QoS Support
spellingShingle Contiguous Frequency-Time Resource Allocation and Scheduling for Wireless OFDMA Systems with QoS Support
Gutiérrez González, Ismael
Telecomunicació de banda ampla, Sistemes de
Multiplexatge per divisió de freqüència
title_short Contiguous Frequency-Time Resource Allocation and Scheduling for Wireless OFDMA Systems with QoS Support
title_full Contiguous Frequency-Time Resource Allocation and Scheduling for Wireless OFDMA Systems with QoS Support
title_fullStr Contiguous Frequency-Time Resource Allocation and Scheduling for Wireless OFDMA Systems with QoS Support
title_full_unstemmed Contiguous Frequency-Time Resource Allocation and Scheduling for Wireless OFDMA Systems with QoS Support
title_sort Contiguous Frequency-Time Resource Allocation and Scheduling for Wireless OFDMA Systems with QoS Support
author Gutiérrez González, Ismael
author_facet Gutiérrez González, Ismael
Bader, Faouzi
Aquilué de Pedro, Ricard
Pijoan Vidal, Joan Lluís
author_role author
author2 Bader, Faouzi
Aquilué de Pedro, Ricard
Pijoan Vidal, Joan Lluís
author2_role author
author
author
topic Telecomunicació de banda ampla, Sistemes de
Multiplexatge per divisió de freqüència
topic_facet Telecomunicació de banda ampla, Sistemes de
Multiplexatge per divisió de freqüència
description The orthogonal frequency divisionmultiple access (OFDMA) scheme has been selected as a potential candidate formany emerging broadband wireless access standards. In this paper, a new joint scheduling and resource allocation scheme is proposed for the OFDMA systems using contiguous subcarrier permutation. The proposed resource allocation algorithm provides contiguous sets of frequency-time resource units following a rectangular shape yielding a reduction on the required burst signalling. The joint scheduling and resource allocation process is divided into two phases: the QoS requirements fulfilment and the input buffers emptying status. For each phase, a specific prioritization function is defined in order to obtain a trade-off between the fairness and the spectral efficiency maximization. The new prioritization scheme provides a reduction of 50% of the 99th percentile from the delivered packets delay in case of non real-time services, and 30% of the packet loss rate in case of real-time services compared to the proportional fair scheduling function. On the other hand, it is also demonstrated that using the rectangular data packing algorithm, the number of required bursts per frame can be reduced up to a few tenths without compromising the performance.
publishDate 2009
format article
status_str publishedVersion
url http://hdl.handle.net/20.500.14342/3326
http://doi.org/10.1155/2009/134579
eu_rights_str_mv openAccess
publisher Hindawi Publishing Corporation
institution Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
collection Recercat. Dipósit de la Recerca de Catalunya
reponame_str Recercat. Dipósit de la Recerca de Catalunya
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
_version_ 1878733426320736256
publishDateSort 2009
author_browse Aquilué de Pedro, Ricard
Bader, Faouzi
Gutiérrez González, Ismael
Pijoan Vidal, Joan Lluís
publisherStr Hindawi Publishing Corporation
score 6.8972664

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