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AuthorZhen L.
AuthorQin H.
AuthorZhang Q.
AuthorChu Z.
AuthorLu G.
AuthorJiang J.
AuthorGuizani M.
Available date2020-03-18T10:47:15Z
Publication Date2019
Publication NameIEEE Wireless Communications Letters
AbstractSatellite communication is expected to play a pivotal role in supporting the ubiquitous machine-to-machine (M2M) connection. Due to its wide beam coverage, however, one of the major challenges is to accommodate massive and concurrent M2M random access (RA) requests with the guarantee of human-to-human communications. To tackle this challenge, an enhanced spatial group-based RA scheme is presented from the viewpoint of preamble design. By leveraging a large-capacity RA preamble set configured with only a single root Zadoff-Chu sequence and strictly constrained cyclic shift offset set, it can effectively eliminate non-orthogonal interference and achieve the robustness to location estimation error in preamble detection procedure. Simulation results demonstrate that the proposed scheme offers an outstanding detection performance improvement, and can accommodate a significantly larger number of M2M devices while having a notably reduced collision probability and access delay, in comparison with the conventional one.
SponsorThis work was supported in part by the National Natural Science Foundation of China under Grant 61801382, Grant 61772387, and Grant 6187012068, in part by the Innovation Team Project of Shaanxi Province under Grant 2017KCT-30-02, in part by the State Key Laboratory of Integrated Services Networks, and in part by the Open Fund of the Shaanxi Key Laboratory of Information Communication Network and Security under Grant ICNS201701. The associate editor coordinating the review of this paper and approving it for publication was B. Makk
PublisherInstitute of Electrical and Electronics Engineers Inc.
Subjectmachine-to-machine (M2M) communications
Subjectpreamble design
Subjectrandom access
Subjectspatial group
TitleOptimal Preamble Design in Spatial Group-Based Random Access for Satellite-M2M Communications
Issue Number3
Volume Number8

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