Method of and device for allocating a token to stations of a communication network having at least two logic loops for the circulation of the token, each loop having an assigned priority

摘要

A decentralized local communication network comprising a plurality of stations. A right to transmit data on a traffic channel, to which each station is connected, is allocated by means of a token. At least one priority level indicating a frequency of allocation of the token assigned to each station, the stations having the same priority level form part of a same group and are assigned to a logic loop for the circulation of the token. The network comprises at least two logic loops. With each priority level there is associated a predetermined time interval which corresponds to a period of time expiring between two successive allocations of the token to a station of the group having said associated priority level. Upon expiration of one of said time intervals, the token passes to the logic loop which is associated to the priority level for which said time interval was expirated and starts to circulate in that logic loop.