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Optimal voice packet classification for enhanced VoIP over priority-enabled networks

2018-12Journal article Restricted access
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dc.contributor.authorNeves, Filipe
dc.contributor.authorSoares, Salviano
dc.contributor.authorAssunção, Pedro
dc.date.accessioned2025-06-02T15:24:48Z
dc.date.available2025-06-02T15:24:48Z
dc.date.issued2018-12
dc.description.abstractThis paper proposes a method for optimal classification of voice packets to enhance the quality of voice communications over priority-enabled networks when poor transmission conditions occur. Either high or low priority is assigned to each packet according to the relevance of its payload (voice segment) for the voice intelligibility. Then, in case of constrained networking conditions, by discarding first the voice packets of lower importance, the network always delivers those segments that most contribute to the perceptual quality. The proposed method is based on a dynamic programming optimisation algorithm that finds the optimal subset of m high priority voice segments in each utterance of size n > m. Such optimal subset minimizes the reconstruction distortion over all possible subsets with the same size m (i.e., the distortion incurred by a utterance reconstructed from only m segments). The simulation results show that the proposed method consistently achieves higher mean opinion scores (MOS) in comparison with non-selective packet drop under the same random network loss conditions, yielding better quality of experience (QoE) for the same packet loss rates (PLR). The priority classification algorithm is independent from error concealment methods and distortion metrics used in the optimisation process, which allows generalisation for diverse communication networks and applications.eng
dc.identifier.citationF. Neves, S. Soares and P. A. A. Assuncao, "Optimal voice packet classification for enhanced VoIP over priority-enabled networks," in Journal of Communications and Networks, vol. 20, no. 6, pp. 554-564, Dec. 2018, doi: 10.1109/JCN.2018.000088.
dc.identifier.doi10.1109/jcn.2018.000088
dc.identifier.issn1229-2370
dc.identifier.issn1976-5541
dc.identifier.urihttp://hdl.handle.net/10400.8/13066
dc.language.isoeng
dc.peerreviewedyes
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.hasversionhttps://ieeexplore.ieee.org/document/8620639
dc.relation.ispartofJournal of Communications and Networks
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectPayloads
dc.subjectPacket loss
dc.subjectDegradation
dc.subjectBandwidth
dc.subjectQuality of service
dc.subjectQuality of experience
dc.subjectEnhanced voice services over networks
dc.subjectPrioritised VoIP communications
dc.subjectPriority voice transmission
dc.subjectVoice packet classification
dc.titleOptimal voice packet classification for enhanced VoIP over priority-enabled networkseng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage564
oaire.citation.issue6
oaire.citation.startPage554
oaire.citation.titleJournal of Communications and Networks
oaire.citation.volume20
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameAssunção
person.givenNamePedro
person.identifier.ciencia-id6811-3984-C17B
person.identifier.orcid0000-0001-9539-8311
person.identifier.ridA-4827-2017
person.identifier.scopus-author-id6701838347
relation.isAuthorOfPublication25649bb9-f135-48e8-8d0f-3706b86701d3
relation.isAuthorOfPublication.latestForDiscovery25649bb9-f135-48e8-8d0f-3706b86701d3

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