Techniques: Error control in digital satellite networks using retransmission schemes

  • Authors:
  • Ark Sastry

  • Affiliations:
  • Department of Electrical Engineering, University of Minnesota, 123 Church Street Southeast, Minneapolis, MN-55455, USA

  • Venue:
  • Computer Communications
  • Year:
  • 1982

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Abstract

Almost all data-communications protocols include, as a data blocks. These retransmission schemes affect the throughput and average message delay of datalinks, and assume greater significance in the context of computer-communications networks. On satellite links, the round-trip propagation delay is relatively large (about 600 ms), and this becomes an important factor in the design of a retransmission scheme. In the paper, a range of automatic repeat-request schmes, and some hybrid schemes using ARQ and forward error correction, are described, and the interaction of channel characteristics with the performance of the schemes are discussed.