Novel approach for shipboard antenna handover without data loss

  • Authors:

  • Mark Miller;Don Wilcoxson;Robert Fitting;Thomas Inukai

  • Affiliations:

  • ViaSat Inc., Carlsbad, CA;ViaSat Inc., Carlsbad, CA;ViaSat Inc., Carlsbad, CA;Comsat Laboratories, Clarksburg, MD

  • Venue:
  • MILCOM'03 Proceedings of the 2003 IEEE conference on Military communications - Volume I
  • Year:
  • 2003

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Abstract

Shipboard antenna handover causes loss of demodulator synchronization, bit count integrity, frame timing, and cryptographic synchronization as well as TCP throughput degradation. This paper describes a novel approach for mitigating the effects of antenna handover which prevents data loss while minimizing handover processing delay. Ship-to-shore handover uses data buffers in the ship and shore modems, and shore-to-ship handover employs interleaving combined with minimal overhead handover encoding. The proposed technique works with any modulation and FEC coding (or no coding) schemes. The only control signal required is a handover signal at the shipboard modem to indicate the start of handover.