Concurrent token ring protocol

Abstract

Concurrent token ring (CTR), a multiple-access protocol for ring-type area networks, is proposed. In CTR, message frames are partially removed by the destination node. A truncated portion of the frame, which contains the source and destination addresses, is configured by the destination into a conditional token which is allowed to circulate back to the source for removal. The conditional token informs 'downstream' nodes of busy data paths and allows them to establish concurrent message transmission if resources are free. Simulation results indicate that the CTR protocol has a higher throughput and shorter transmission delay than the IEEE 802.5 token ring.<>