Accession Number : ADA115133

Title :   Data Latency in Time Multiplexed Bus Systems for Missile Applications.

Descriptive Note : Final rept. 1 Jan 81-22 Feb 82,

Corporate Author : RICE UNIV HOUSTON TEX DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Sinclair,J B

PDF Url : ADA115133

Report Date : 11 Mar 1982

Pagination or Media Count : 26

Abstract : This research examines the performances of three computer communication bus protocols: round robin passing protocol (RRPP), modified round robin passing protocol (MRRPP), and carrier-sense multiple-access with collision detection (CSMA/CD). These are compared through the simulation of a medium-range air-to-surface guided weapon federated computer network, specifically the mid-course guidance phase. The performance of each protocol is measured by the average and maximum message waiting time and latency. Under these performance measures, the CSMA/CD protocol is clearly superior, with average message waiting time as low as 22% of that for RRPP and 8% of that for MRRPP. Maximum waiting times are also lower for CSMA/CD, although by a much narrower margin. This indicates the potential for the use of CSMA/CD communication channels in low channel utilization, delay-sensitive applications. (Author)

Descriptors :   *Computer communications, *Digital computers, *Guided missiles, Collisions, Performance(Engineering), Detection, Simulation, Networks

Subject Categories : Computer Hardware
      Computer Systems
      Guided Missiles
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE