LaSR: A Supple Multi-Connectivity Scheduler for Multi-RAT OFDMA Systems

dc.affiliation.dptoUC3M. Departamento de Ingeniería Telemáticaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Network Technologieses
dc.contributor.authorDiez, Luis
dc.contributor.authorGarcía-Saavedra, Andrés
dc.contributor.authorValls, Víctor
dc.contributor.authorLi, Xi
dc.contributor.authorCosta-Pérez, Xavier
dc.contributor.authorAgüero, Ramón
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.contributor.funderEuropean Commissionen
dc.description.abstractNetwork densification over space and spectrum is expected to be key to enabling the requirements of next generation mobile systems. The pitfall is that radio resource allocation becomes substantially more complex. In this paper we propose LaSR, a practical multi-connectivity scheduler for OFDMA-based multi-RAT systems. LaSR makes optimal discrete control actions by solving a sequence of simple optimization problems that do not require prior information of traffic patterns. In marked contrast to previous work, the flexibility of our approach allows us to construct scheduling policies that achieve a good balance between system cost and utility satisfaction, while jointly operate across heterogeneous RATs, accommodate real-system requirements, and guarantee system stability. Examples of system requirements considered in this paper include (but are not limited to): constraints on how scheduling data can be encoded onto signaling protocols (e.g. LTE’s DCI), delays when turning on/off radio units, or on/off cycles when using unlicensed spectrum. We evaluate our scheduler via a thorough simulation campaign in a variety of scenarios with e.g. mobile users, RATs using unlicensed spectrum (using a duty cycle access mechanism), imperfect queue state information, and constrained signaling protocol.en
dc.description.sponsorshipThe authors would like to thank the Spanish Government (Ministerio de Economía y Competitividad, Fondo Europeo de Desarrollo Regional, FEDER) for its support through the project ADVICE (TEC2015-71329-C2-1-R) and 5G-Transformer Project (Grant 761536).en
dc.identifier.bibliographicCitationDiez, L., García-Saavedra, A., Valls, V., Li, X., Costa-Pérez, X. y Agüero, R. (2018). LaSR: A Supple Multi-Connectivity Scheduler for Multi-RAT OFDMA Systems. IEEE Transaction on Mobile Computing, 19(3), pp. 624-639.en
dc.identifier.publicationtitleIEEE Transaction on Mobile Computingen
dc.relation.projectIDGobierno de España. TEC2015-71329-C2-1-Res
dc.rights© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.en
dc.rights.accessRightsopen accessen
dc.subject.otherRadio resource schedulingen
dc.subject.otherCarrier aggregationen
dc.titleLaSR: A Supple Multi-Connectivity Scheduler for Multi-RAT OFDMA Systemsen
dc.typeresearch article*
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