Techniques: Survey of computer communications loop networks: Part 1

  • Authors:

  • Bk Penney;Aa Baghdadi

  • Affiliations:

  • Now at Bell Northern Research Ltd, PO Box 3511, Station `C, Ottawa, Canada;Department of Computing and Control, Imperial College of Science and Technology, London SW7, UK

  • Venue:
  • Computer Communications
  • Year:
  • 1979

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Abstract

Loop networks for computer communications are of interest due to inherent advantages of performance, modularity, simplicity and cost. Several demand-shared loops are surveyed and compared, and some nondemand-shared loops described. The significant features of loops are identified and discussed, with emphasis on communications aspects, rather than operating systems or software. Topology (single and multiloops), multiplexing techniques, distribution of control, synchronization, reliability and performance are discussed. In a section on performance different loops are compared with each other and with other topologies, particularly stars, random-access highways and polled highways. It is shown that loops can have performance advantages over other configurations. In Part 1, loop networks are introduced and individual loops described. Configuration and topology and loop-capacity sharing are discussed. Timing and synchronization, control distribution, reliability and performance will be covered in subsequent issues of the journal.