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Conference Paper: On exploiting the on-off characteristics of human speech to conserve energy for the downlink VoIP in WiMAX systems

TitleOn exploiting the on-off characteristics of human speech to conserve energy for the downlink VoIP in WiMAX systems
Authors
KeywordsEnergy conservation
QoS
Sleep mode
VoIP
WiMAX
Issue Date2011
PublisherIEEE.
Citation
Proceedings of the 7th IEEE International Wireless Communications and Mobile Computing Conference (IWCMC 2011), Istanbul, Turkey, 4-8 July 2011, p. 337-342 How to Cite?
AbstractEnergy conservation is a critical issue in the emerging standard IEEE 802.16e/m WiMAX supporting mobility. To guarantee QoS requirements in real-time services such as VoIP, traditional energy saving strategies adopt constant listen-sleep intervals, ignoring the On-Off characteristics of human speech. However, statistically the silence period can account for nearly 60% of the whole speech in time scale. Therefore, neglecting this fact can lead to unnecessary periodical listening in the silence duration, and, in turn, can result in excessive waste of battery energy. In this paper, we adopt a hybrid energy management for the downlink simplex VoIP. We also give an evaluation model to analyze the performance of the scheme. Guided by this model, we obtain the optimal window adjustment parameters. Extensive simulation results have validated the analytical model, and indicated that, compared with the traditional scheme, the hybrid scheme can achieve as much as 90% reduction in energy dissipation during silence period, while meeting the QoS requirements satisfactorily at the same time. © 2011 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/158720
ISBN
References

 

DC FieldValueLanguage
dc.contributor.authorLin, XHen_US
dc.contributor.authorNiu, Len_US
dc.contributor.authorWang, Hen_US
dc.contributor.authorKwok, YKen_US
dc.date.accessioned2012-08-08T09:01:01Z-
dc.date.available2012-08-08T09:01:01Z-
dc.date.issued2011en_US
dc.identifier.citationProceedings of the 7th IEEE International Wireless Communications and Mobile Computing Conference (IWCMC 2011), Istanbul, Turkey, 4-8 July 2011, p. 337-342en_US
dc.identifier.isbn9781424495399-
dc.identifier.urihttp://hdl.handle.net/10722/158720-
dc.description.abstractEnergy conservation is a critical issue in the emerging standard IEEE 802.16e/m WiMAX supporting mobility. To guarantee QoS requirements in real-time services such as VoIP, traditional energy saving strategies adopt constant listen-sleep intervals, ignoring the On-Off characteristics of human speech. However, statistically the silence period can account for nearly 60% of the whole speech in time scale. Therefore, neglecting this fact can lead to unnecessary periodical listening in the silence duration, and, in turn, can result in excessive waste of battery energy. In this paper, we adopt a hybrid energy management for the downlink simplex VoIP. We also give an evaluation model to analyze the performance of the scheme. Guided by this model, we obtain the optimal window adjustment parameters. Extensive simulation results have validated the analytical model, and indicated that, compared with the traditional scheme, the hybrid scheme can achieve as much as 90% reduction in energy dissipation during silence period, while meeting the QoS requirements satisfactorily at the same time. © 2011 IEEE.en_US
dc.languageengen_US
dc.publisherIEEE.-
dc.relation.ispartofInternational Wireless Communications and Mobile Computing Conferenceen_US
dc.rightsInternational Wireless Communications and Mobile Computing Conference. Copyright © IEEE.-
dc.rights©2011 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectEnergy conservationen_US
dc.subjectQoSen_US
dc.subjectSleep modeen_US
dc.subjectVoIPen_US
dc.subjectWiMAXen_US
dc.titleOn exploiting the on-off characteristics of human speech to conserve energy for the downlink VoIP in WiMAX systemsen_US
dc.typeConference_Paperen_US
dc.identifier.emailKwok, YK: ykwok@eee.hku.hken_US
dc.identifier.authorityKwok, YK=rp00128en_US
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1109/IWCMC.2011.5982556en_US
dc.identifier.scopuseid_2-s2.0-80052466486en_US
dc.identifier.hkuros194136-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80052466486&selection=ref&src=s&origin=recordpageen_US
dc.identifier.spage337en_US
dc.identifier.epage342en_US
dc.description.otherProceedings of the 7th IEEE International Wireless Communications and Mobile Computing Conference (IWCMC 2011), Istanbul, Turkey, 4-8 July 2011, p. 337-342-
dc.identifier.scopusauthoridKwok, YK=7101857718en_US
dc.identifier.scopusauthoridWang, H=35241455600en_US
dc.identifier.scopusauthoridLiu, L=50961440300en_US
dc.identifier.scopusauthoridLin, XH=50961503200en_US

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