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Why to Decouple the Uplink and Downlink in Cellular Networks and How To Do It
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2016 (English)In: IEEE Communications Magazine, ISSN 0163-6804, E-ISSN 1558-1896, Vol. 54, no 3, 110-117 p.Article in journal (Refereed) Published
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Abstract [en]

Ever since the inception of mobile telephony, the downlink and uplink of cellular networks have been coupled, that is, mobile terminals have been constrained to associate with the same base station in both the downlink and uplink directions. New trends in network densification and mobile data usage increase the drawbacks of this constraint, and suggest that it should be revisited. In this article we identify and explain five key arguments in favor of downlink/uplink decoupling based on a blend of theoretical, experimental, and architectural insights. We then overview the changes needed in current LTE-A mobile systems to enable this decoupling, and then look ahead to fifth generation cellular standards. We demonstrate that decoupling can lead to significant gains in network throughput, outage, and power consumption at a much lower cost compared to other solutions that provide comparable or lower gains.

Place, publisher, year, edition, pages
IEEE , 2016. Vol. 54, no 3, 110-117 p.
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Communication Systems
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URN: urn:nbn:se:kth:diva-188461DOI: 10.1109/MCOM.2016.7432156ISI: 000375040700017Scopus ID: 2-s2.0-84963771432OAI: oai:DiVA.org:kth-188461DiVA: diva2:936102
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QC 20160613

Available from: 2016-06-13 Created: 2016-06-10 Last updated: 2016-06-13Bibliographically approved

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