| 摘要 |
In a single-token ring system, every transmitting station interrupts the transmission of information packets if a collision is detected, as can occur in the case of a multiple-token error, and transmits a collision packet; on reception of such a collision packet, the ring is closed again and the station accesses the ring line, in competition with other stations, with the risk of collision, after a randomly determined waiting time interval has elapsed, in that, with the ring line being opened, it transmits an information packet with a terminating free token and, if this information packet is transmitted without any collisions, removes said packet from the ring again without the terminating token. In the event of token loss, each station which wishes to transmit and which detects this accesses the ring line in the same manner, in competition with other stations, with the risk of collision.
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