With the increasing number of Internet of Things (IoT) devices, machine-type communication
(MTC) has become an important use case of the fifth-generation communication systems …

This paper proposes a compressed sensing-based random access protocol (CS-RACH),
which is suitable for servicing a large number of machine-type communication devices in …

As IoT services become more active, the density of IoT devices is increasing, and massive
connectivity technology is needed to support numerous devices simultaneously. In addition …

To meet the tremendous demand of Internet of Things (IoT) applications, the 3rd generation
partnership project (3GPP) has specified the narrowband IoT (NB-IoT) standard. However …

With the development of LPWA (Low Power Wide Area) technology, the emerging NB-IoT
(Narrowband Internet of Things) technology is becoming popular with wide area and low …

In fifth-generation (5G) and beyond cellular networks, grant-free random access (RA) is
useful to reduce latency in uplink. We consider a scenario wherein time is split into frames …

One of the major challenges for Internet-of-Things applications is that the existing cellular
technologies do not support the uplink IoT traffic in an energy-efficient manner. There are …

As a new wireless access technology, Narrow Band IoT (NB-IoT) enables low-power wide-
area coverage services and can be applied to many domains. Emerging applications such …

Narrowband Internet of Things (NB-IoT) is a new technology developed to support low-
power wide area networks (LPWAN) services. To extend its coverage and decrease its …

The collision of multiple MSG 3 transmissions due to the selection of the same preamble
sequence in the Long Term Evolution (LTE) Random Access procedure is an important …