time synchronization

• Time sync is critical at many layers

  • Beam-forming, localization, distributed DSP
  • Data aggregation & caching
  • TDMA guard bands
  • • Clock sync for TDMA is more important in sensor nets, compared to traditional nets:
      • Listening is EXPENSIVE
      • Infrequent data means infrequent sync
      • Small data means guard band is relatively big

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