Millimeter wave ad hoc networks: Noise-limited or interference-limited?
2015 (English)Conference paper (Refereed)
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.
5G, millimeter wave communications, collision analysis, hybrid MAC.
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject Electrical Engineering; Computer Science
IdentifiersURN: urn:nbn:se:kth:diva-178793DOI: 10.1109/GLOCOMW.2015.7414085ISI: 000380457400128ScopusID: 2-s2.0-84971273056OAI: oai:DiVA.org:kth-178793DiVA: diva2:878306
IEEE Global Communications (GLOBECOM),06 Dec - 10 Dec 2015,San Diego, CA, USA
QC 201602172015-12-082015-12-082016-09-05Bibliographically approved