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Publication Detail
Fast desynchronization for decentralized multichannel medium access control
  • Publication Type:
    Journal article
  • Authors:
    Deligiannis N, Mota JFC, Smart G, Andreopoulos Y
  • Publisher:
    Institute of Electrical and Electronics Engineers Inc.
  • Publication date:
  • Pagination:
    3336, 3349
  • Journal:
    IEEE Transactions on Communications
  • Volume:
  • Issue:
  • Status:
  • Print ISSN:
  • Language:
  • Keywords:
    decentralized multichannel coordination, desynchronization, gradient methods, Medium access control
  • Notes:
    © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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 time-synchronous 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.
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