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The Internet-of-Things (IoT) revolution has triggered the need of
massive connectivity for billions of devices requiring a system
capacity which is far beyond the current network designs that can
be supported. This emerging requirement has reshaped the society
and industry in pursuing efficient communication paradigm. In
particular, massive machine-type communications (mMTC) will be a
prime driver for enabling the vision of scalable IoT with
heterogeneous applications, where the massive access is of
paramount importance. This book discusses important massive IoT
scenarios and the key technical requirements of the corresponding
massive access. We review the state-of-the-art IoT standards and
mMTC solutions, and summarize the limitations of the existing
schemes from the perspectives of the network architecture, random
access procedure, and multiple access techniques. Here, we specify
the massive access challenges and reveal that the facilitation of
MTC invokes a dramatically different access scheme from current
ones mainly designed for human-centric communications. Moreover, we
propose several promising massive access solutions to overcome the
limitations, where sufficient theoretical model and algorithm
design guidance are provided. Besides, detailed simulation and
engineering implementation methods are also included.
The Internet-of-Things (IoT) revolution has triggered the need of
massive connectivity for billions of devices requiring a system
capacity which is far beyond the current network designs that can
be supported. This emerging requirement has reshaped the society
and industry in pursuing efficient communication paradigm. In
particular, massive machine-type communications (mMTC) will be a
prime driver for enabling the vision of scalable IoT with
heterogeneous applications, where the massive access is of
paramount importance. This book discusses important massive IoT
scenarios and the key technical requirements of the corresponding
massive access. We review the state-of-the-art IoT standards and
mMTC solutions, and summarize the limitations of the existing
schemes from the perspectives of the network architecture, random
access procedure, and multiple access techniques. Here, we specify
the massive access challenges and reveal that the facilitation of
MTC invokes a dramatically different access scheme from current
ones mainly designed for human-centric communications. Moreover, we
propose several promising massive access solutions to overcome the
limitations, where sufficient theoretical model and algorithm
design guidance are provided. Besides, detailed simulation and
engineering implementation methods are also included.
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