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Millimeter wave ad hoc networks: Noise-limited or interference-limited?
KTH, School of Electrical Engineering (EES), Automatic Control. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0001-6737-0266
(Reglerteknik, Automatic Control)ORCID iD: 0000-0001-9810-3478
2015 (English)Conference paper (Refereed)
Abstract [en]

In millimeter wave (mmWave) communication systems,narrow beam operations overcome severe channel attenuations,reduce multiuser interference, and thus introduce thenew concept of noise-limited mmWave wireless networks. Theregime of the network, whether noise-limited or interferencelimited,heavily reflects on the medium access control (MAC)layer throughput and on proper resource allocation and interferencemanagement strategies. Yet, alternating presence of theseregimes and, more importantly, their dependence on the mmWavedesign parameters are ignored in the current approaches tommWave MAC layer design, with the potential disastrous consequenceson the throughput/delay performance. In this paper,tractable closed-form expressions for collision probability andMAC layer throughput of mmWave networks, operating underslotted ALOHA and TDMA, are derived. The new analysis revealsthat mmWave networks may exhibit a non negligible transitionalbehavior from a noise-limited regime to an interference-limitedregime, depending on the density of the transmitters, densityand size of obstacles, transmission probability, beamwidth, andtransmit power. It is concluded that a new framework of adaptivehybrid resource allocation procedure, containing a proactivecontention-based phase followed by a reactive contention-free onewith dynamic phase duration, is necessary to cope with suchtransitional behavior.

Place, publisher, year, edition, pages
IEEE Communications Society, 2015.
Keyword [en]
5G, millimeter wave communications, collision analysis, hybrid MAC.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering; Computer Science
URN: urn:nbn:se:kth:diva-178793DOI: 10.1109/GLOCOMW.2015.7414085ISI: 000380457400128ScopusID: 2-s2.0-84971273056OAI: diva2:878306
IEEE Global Communications (GLOBECOM),06 Dec - 10 Dec 2015,San Diego, CA, USA

QC 20160217

Available from: 2015-12-08 Created: 2015-12-08 Last updated: 2016-09-05Bibliographically approved

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