Accession Number : ADA200988


Title :   Polychannel Systems for Mass Digital Communication


Descriptive Note : Technical rept.


Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE LAB FOR COMPUTER SCIENCE


Personal Author(s) : Gifford, David K


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a200988.pdf


Report Date : Jul 1988


Pagination or Media Count : 31


Abstract : We describe a new type of distributed computer system that looks beyond workstation and local area network assumptions towards the time when computers will be used by everyone at both home and the office. This new system is designed to provide sophisticated information services to an entire metropolitan area. We have combined digital broadcast channels and duplex communication channels in a polychannel system that uses predicate based database content labels to automatically route queries. Our thesis is that a polychannel system produces substantial cost and system scaling advantages while retaining the flexibility of client-server style duplex communication. Experimental data from a two year test of the Boson Community Information System system with hundreds of users supports this thesis. Keywords: Design; Experimentation; Human factors polychannel system; Digital broadcast; Content label; Query routing; Update routing; Active medium.


Descriptors :   *CHANNELS , *DIGITAL COMMUNICATIONS , *NETWORKS , *RADIO BROADCASTING , *DIGITAL SYSTEMS , *COMPUTERS , INTERROGATION , ROUTING , SUPPORTS , SCALING FACTOR , URBAN AREAS , MASS , EXPERIMENTAL DATA , HUMAN FACTORS ENGINEERING


Subject Categories : Computer Hardware
      Command, Control and Communications Systems


Distribution Statement : APPROVED FOR PUBLIC RELEASE