Spatial Group Based Random Access for M2M Communications

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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.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2014-06
Language
English
Article Type
Article
Citation

IEEE COMMUNICATIONS LETTERS, v.18, no.6, pp.961 - 964

ISSN
1089-7798
DOI
10.1109/LCOMM.2014.2320970
URI
http://hdl.handle.net/10203/189867
Appears in Collection
EE-Journal Papers(저널논문)
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