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A Unified Approach to QoS-Guaranteed Scheduling for Channel-Adaptive Wireless Networks

dc.contributor.authorWang, Xin
dc.contributor.authorGiannakis, Georgios B.
dc.contributor.authorMarques, Antonio G.
dc.date.accessioned2009-01-20T18:52:48Z
dc.date.available2009-01-20T18:52:48Z
dc.date.issued2007-12-01
dc.identifier.citationProceedings of the IEEE, vol. 95, no. 12, pp. 2410-2431es
dc.identifier.issn0018-9219
dc.identifier.otherDigital Object Identifier: 10.1109/JPROC.2007.907120
dc.identifier.urihttp://hdl.handle.net/10115/1808
dc.description.abstractScheduling amounts to allocating optimally channel, rate and power resources to multiple connections with diverse quality-of-service (QoS) requirements. It constitutes a throughput-critical task at the medium access control layer of today's wireless networks that has been tackled by seemingly unrelated information-theoretic and protocol design approaches. Capitalizing on convex optimization and stochastic approximation tools, the present paper develops a unified framework for channel-aware QoS-guaranteed scheduling protocols for use in adaptive wireless networks whereby multiple terminals are linked through orthogonal fading channels to an access point, and transmissions are (opportunistically) adjusted to the intended channel. The unification encompasses downlink and uplink with time-division or frequency-division duplex operation; full and quantized channel state information comprising a few bits communicated over a limited-rate feedback channel; different types of traffic (best effort, non-real-time, real-time); uniform and optimal power loading; off-line optimal scheduling schemes benchmarking fundamentally achievable rate limits; as well as on-line scheduling algorithms capable of dynamically learning the intended channel statistics and converging to the optimal benchmarks from any initial value. The take-home message offers an important cross-layer design guideline: judiciously developed, yet surprisingly simple, channel-adaptive, on-line schedulers can approach information-theoretic rate limits with QoS guarantees.es
dc.description.sponsorshipThis work was supported in part by the U.S. Department of Defense Army Research Office under Grant W911NF-05-1-0283 and was prepared through collaborative participation in the Communications and Networks Consortium sponsored by the U.S. Army Research Laboratory under the Collaborative Technology Alliance Program, Cooperative Agreement DAAD19-01-2-0011.es
dc.language.isoenes
dc.publisherIEEEes
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subjectTelecomunicacioneses
dc.titleA Unified Approach to QoS-Guaranteed Scheduling for Channel-Adaptive Wireless Networkses
dc.typeinfo:eu-repo/semantics/articlees
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.subject.unesco3325 Tecnología de las Telecomunicacioneses
dc.description.departamentoTeoría de la Señal y Comunicaciones


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