Techniques: CSMA with collision avoidance

  • Authors:
  • Alan Colvin

  • Affiliations:
  • Computer Automation Ltd, Hertford House, Denham Way, Maple Cross, Richmansworth, Herts. WD3 2XB, UK

  • Venue:
  • Computer Communications
  • Year:
  • 1983

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Abstract

Advances in local area networking have allowed users to run many different applications on one system. Users are now asking for greater access, more functions, more power and greater reliability. This requires that the system tasks should be distributed, and means that the interconnection system used should be highly reliable; 'passive', so that no failed component can bring the entire system down; support high through-put; and operate on low-cost cable. This paper describes a broadband transmission system based on a single, passive coaxial cable which detects possible collisions before the data is sent. Examples of two remote stations and two adjacent stations competing for transmission are given, along with performance comparisons of CSMA/CD and CSMA/CA.