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Congestion-based Ra...
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Möller, AndersKTH,Optimeringslära och systemteori
(author)
Congestion-based Rate and Power Control in Wireless Cellular Networks
- Article/chapterEnglish2011
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New York :IEEE,2011
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LIBRIS-ID:oai:DiVA.org:kth-92082
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-92082URI
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https://doi.org/10.1109/GLOCOM.2011.6133508DOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:kon swepub-publicationtype
Notes
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QC 20120326
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In a cellular network it is necessary to make a trade-off between congestion and Quality of Service (QoS) of the users. To ensure good system performance in uplink of a WCDMA network, control loops are used to adapt to changing radio and interference conditions. A fast inner power control loop updates the transmission powers of the mobiles based on measurements related to QoS, which are compared to a reference value. The reference value is set dynamically by a slower outer rate control loop that uses measurements of congestion. There is a time-scale difference between the loops, but joint dynamics cannot be neglected. In this paper we derive a high order system model with distributed feedback control based on locally measurable information. We model the time-scale difference between the loops and include this in the model. We give sufficient conditions for stability using control theoretic methods and validate the model and results by simulations.
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Jönsson, Ulf T.KTH,Optimeringslära och systemteori(Swepub:kth)u1hj15nf
(author)
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Blomgren, Mats
(author)
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Gunnarsson, Fredrik
(author)
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KTHOptimeringslära och systemteori
(creator_code:org_t)
Related titles
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In:2011 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE (GLOBECOM 2011)New York : IEEE, s. 6133508-9781424492688
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