Medium Access Control for IoT

Stub. The lowest layer of IoT communication protocols: collision detection and resolution, power-saving MAC algorithms, IEEE 802.15.4, non-beacon tracking, and global/long-preamble synchronization, illustrated with a cold supply-chain auditing case study.

· 1 min read · 144 words

The MAC layer handles everything unpleasant about sharing a noisy, power-constrained RF medium among many nodes: detecting and resolving transmission collisions, saving power by sleeping most of the time, discovering and pairing with neighbors, and staying synchronized without a central clock. Covers the general mechanisms plus their concrete realization in IEEE 802.15.4 (the basis for many low-power IoT radios), non-beacon-enabled tracking, and the global- vs. long-preamble synchronization strategies used when devices can’t stay awake to listen for a beacon — grounded in a cold supply-chain auditing case study.

Outline (TODO — flesh out each)

  • Collision detection and resolution
  • Power-saving algorithms
  • Case study: cold supply chain auditing
  • Power MAC algorithms
  • IEEE 802.15.4 protocols
  • Non-beacon tracking
  • Global synchronization
  • Long preamble synchronization

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