Decentralized multichannel medium access control

The success of future Internet-of-Things (IoT) based application deployments depends on the ability of wireless sensor platforms to sustain uninterrupted operation based on environmental energy harvesting. In this paper, we deploy a multitransducer platform for photovoltaic and piezoelectric energy harvesting and collect raw data about the harvested power in commonly-encountered outdoor and indoor scenarios. We couple the generated power profiles with probability mixture models and make our data and processing code freely available to the research community for wireless sensors and IoT-oriented applications. Our aim is to provide data-driven probability models that characterize the energy production process, which will substantially facilitate the coupling of energy harvesting statistics with energy consumption models for processing and transceiver designs within upcoming IoT deployments.

show abstract

Fast Desynchronization for Decentralized Multichannel Medium Access Control

Deligiannis

Mota

Smart

et al. 2015

IEEE Trans. Commun.

Self Cite

View full text Add to dashboard Cite

Distributed desynchronization algorithms are key to wireless sensor networks as they allow for medium access control in a decentralized manner. In this paper, we view desynchronization primitives as iterative methods that solve optimization problems. In particular, by formalizing a well established desynchronization algorithm as a gradient descent method, we establish novel upper bounds on the number of iterations required to reach convergence. Moreover, by using Nesterov's accelerated gradient method, we propose a novel desynchronization primitive that provides for faster convergence to the steady state. Importantly, we propose a novel algorithm that leads to decentralized timesynchronous multichannel TDMA coordination by formulating this task as an optimization problem. Our simulations and experiments on a densely-connected IEEE 802.15.4-based wireless sensor network demonstrate that our scheme provides for faster convergence to the steady state, robustness to hidden nodes, higher network throughput and comparable power dissipation with respect to the recently standardized IEEE 802.15.4e-2012 time-synchronized channel hopping (TSCH) scheme.Index Terms-Medium access control, desynchronization, gradient methods, decentralized multichannel coordination. 1 Both high network throughput and quick convergence are important for WSNs that operate with a periodic wake-up cycle (or are event-triggered) and must quickly converge to a steady operational state and transmit high data volumes before being re-suspended.

show abstract

Decentralized multichannel medium access control

Cited by 9 publications

References 45 publications

Review and Classification of Multichannel MAC Protocols for Low-Power and Lossy Networks

Review and Classification of Multichannel MAC Protocols for Low-Power and Lossy Networks

Energy harvesting for the Internet-of-Things: Measurements and probability models

Fast Desynchronization for Decentralized Multichannel Medium Access Control

Contact Info

Product

Resources

About