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Ring Network Employing the Locomotive Concept

IP.com Disclosure Number: IPCOM000038627D
Original Publication Date: 1987-Feb-01
Included in the Prior Art Database: 2005-Jan-31

Publishing Venue

IBM

Related People

Authors:
Boettiger, H Hehl, WH Henn, H Reichl, L [+details]

Abstract

As it permits the simultaneous transmission of several data frames led by a locomotive, the locomotive concept is advantageous for short messages of, say, 320 data bits, for voice packets and/or rings of, say, 200 km. The frames are sent and transmitted, respectively, by one or more nodes on the ring. Also suitable for this purpose are optical fibers permitting transmission frequencies of, say, 200 Mb/sec. This article describes a simplex and a duplex locomotive mechanism with multiple locomotives, wherein data frames may be reused by other nodes. The locomotive simplex ring has a node generating locomotive frames LOC (Fig. 1) at a given frequency. During initialization, a first (primary) generator starts transmitting. A second generator starts operating only after the packet train has arrived at or passed its node.