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Massive Machine Type CommunicationsConclusion

Massive Machine Type Communications: Conclusion [In this book, various emerging multiple access schemes for the mMTC system have been introduced. First the characteristics and requirements of the mMTC scenario are described. For the sake of saving the enormous control signaling overheads in the small data packet transmissions, grant-free random access is regarded as a suitable random access procedure for mMTC. Nevertheless, new challenges including anonymous transmission and collision are arisen in grant-free random access. The researchers are driven to consider novel multiple access schemes. Therein, CSMUD, CSA and CTSMA are discussed. In CSMUD, sparse user activity based on sporadic transmission in mMTC is exploited to mitigate the influence of MAI. CSA enhances the collision resolution capability of ALOHA by employing SIC on multiple slots. In CTSMA, tandem spreading and segment coding are applied to confine the impact of collision to a deterministic number of segments and resolve them.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

Massive Machine Type CommunicationsConclusion

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Publisher
Springer International Publishing
Copyright
© The Author(s), under exclusive license to Springer Nature Switzerland AG 2019
ISBN
978-3-030-13573-7
Pages
53 –53
DOI
10.1007/978-3-030-13574-4_6
Publisher site
See Chapter on Publisher Site

Abstract

[In this book, various emerging multiple access schemes for the mMTC system have been introduced. First the characteristics and requirements of the mMTC scenario are described. For the sake of saving the enormous control signaling overheads in the small data packet transmissions, grant-free random access is regarded as a suitable random access procedure for mMTC. Nevertheless, new challenges including anonymous transmission and collision are arisen in grant-free random access. The researchers are driven to consider novel multiple access schemes. Therein, CSMUD, CSA and CTSMA are discussed. In CSMUD, sparse user activity based on sporadic transmission in mMTC is exploited to mitigate the influence of MAI. CSA enhances the collision resolution capability of ALOHA by employing SIC on multiple slots. In CTSMA, tandem spreading and segment coding are applied to confine the impact of collision to a deterministic number of segments and resolve them.]

Published: Mar 26, 2019

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