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Spatial Group Based Random Access for M2M Communications
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
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2014 (English)In: IEEE Communications Letters, ISSN 1089-7798, Vol. 18, no 6, 961-964 p.Article in journal (Refereed) Published
Abstract [en]

We expect that the number of machine-to-machine (M2M) devices will rapidly increase in the near future due to a growing demand for a wide range of M2M applications such as e-health, public safety, surveillance, remote maintenance and control, and smart metering. Therefore, the future cellular networks should accommodate a large number of M2M devices and their random access (RA) requests at a specific time instant. In this letter, we propose a novel RA scheme to effectively increase the number of available preambles for the future M2M communication environment. The proposed scheme provides additional preambles by spatially partitioning a cell coverage into multiple group regions and reducing cyclic shift size in RA preambles. As a result, the proposed RA scheme can accommodate a significantly larger number of machine nodes with much lower collision probability and shorter random access delay, compared to a conventional RA scheme.

Place, publisher, year, edition, pages
2014. Vol. 18, no 6, 961-964 p.
Keyword [en]
M2M, random access, group, preamble, LTE
National Category
Signal Processing
URN: urn:nbn:se:kth:diva-150539DOI: 10.1109/LCOMM.2014.2320970ISI: 000340115200016ScopusID: 2-s2.0-84902987587OAI: diva2:744377

QC 20140908

Available from: 2014-09-08 Created: 2014-09-05 Last updated: 2014-09-08Bibliographically approved

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Kim, Su Min
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