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Successful implementation of massive machine-type communications (MTC) service over cellular networks is an important enabler of Internet of things. As the existing cellular infrastructure has been designed and optimized for moderate traffic, the introduction of MTC in cellular networks results in several key challenges, among them, temporal starvation of initial access resources is of paramount importance...
The Random Access (RA) procedure in existing cellular networks is not capable of functioning properly during high access load conditions. For this purpose, overload control mechanisms are needed. Most proposed mechanisms in the literature offer a tradeoff between access rate and experienced delay. However, when the maximal tolerated delay and the energy spent on retransmissions are tightly bounded,...
In addition to the Mobile Broadband (MBB) services, future cellular networks will need to cope with a range of new "Internet of things" (IoT) services. LTE-Advanced and future generation cellular technologies should support both service sets within one network in order to keep the service costs and deployment expenses low. Massive IoT services require much less bandwidth than the MBB services,...
One of the significant complexities that Machine Type Communications (MTC) is expected to bring about is congestion. One promising conceptual approach in the literature to reduce congestion is clustering or grouping based solutions. Designing group based solutions highly depend on particular cases and it is challenging to come up with a universal solution. This paper is based on a project designed...
The increasing adoption of Machine Type Communication (MTC) applications using the Long Term Evolution (LTE) brings new challenges for the traditional bearer allocation and network management. MTC devices are high in number, each requiring an individual bearer for a short data transmission; an inefficient process considering the signaling and management effort to the duration of the actual bearer...
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