1 - 6 of 6 Chapters
[With the rise of a new round of scientific and technological revolutions and industrial changes in the world, the emergence of a large number of new applications, new businesses, new fields and new markets pose more requirements and challenges to existing mobile communication technologies ....
[In this chapter, the random access procedure for mMTC is discussed. First, the grant-based random access including the long term evolution (LTE) random access channel (RACH) is introduced. Then a suitable random access procedure for mMTC called grant-free random access is presented.]
[Compressive sensing based multi-user detection (CSMUD) is a code domain PHY layer solution which attracts a lot of attentions [18, 19]. CSMUD takes advantage of the sparse user activity of the mMTC sporadic transmission for user identification and data detection. In CSMUD, compressive sensing...
[In this chapter, a MAC layer scheme named coded slotted ALOHA (CSA) is presented with illustrative example and theoretical analysis [25, 26]. The difference between the PHY layer schemes and the MAC layer schemes is that the PHY layer solutions are used for the single slot transmission process...
[Currently, high connectivity in the mMTC system can be achieved by the cutting-edge multiple access approaches. Nevertheless, a comprehensive multiple access scheme to cover both high connectivity and reliability in grant-free random access system is potentially demanded by the future MTC...
[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...
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