$E^{2}$ -MAC: Energy Efficient Medium Access for Massive M2M Communications

Energy-Efficient Random Access for Machine- to-Machine (M2M) Communications

In this paper, an average consumed energy for a unit data transmission in analyzed in frequency-agile cognitive radios. The average energy consumed by a random access protocol operated in a channel using a whole system bandwidth is compared with that operated in frequency-separated channels, which results in an energy saving ratio. The energy saving ratio quantitatively evaluates an energy savi...

Energy Efficient Scheduling for Grouped M2M Communications over Cellular Networks

In this paper, energy-efficient scheduling for grouped machine-type devices deployed in cellular networks is investigated. We introduce a scheduling-based cooperation incentive scheme which enables machine nodes to organize themselves locally, create machine groups, and communicate through group representatives to the base station. This scheme benefits from a novel scheduler design which takes ...

Noncoherent Energy-based Communications for the Massive SIMO MAC

We consider several single antenna transmitters communicating with a multi-antenna receiver, with the latter decoding transmitted information at the end of each symbol time. Motivated by the optimal noncoherent detector in a Rayleigh fading channel, we propose a noncoherent energy-based communication scheme that does not require any knowledge of instantaneous channel state information at either...

Multiple Access Technologies for Cellular M2M Communications

This paper reviews the multiple access techniques for machine⁃to⁃machine (M2M) communications in future wireless cellular net⁃ works. M2M communications aims at providing the communication infrastructure for the emerging Internet of Things (IoT), which will revolutionize the way we interact with our surrounding physical environment. We provide an overview of the multiple access strategies and e...

Modelling of a Hybrid MAC Protocol for M2M Communications