Patent ID: 6201790
Filing Date: 2001-03-13
Classification: H04L

Abstract:
A method of controlling access to an asynchronous transfer mode transmission network for messages contained in cells transmitted by data sources comprising:a first step of defining a transmission contract between each data source and the network including, for the cells which occur in given time units:a first operation of classification into n groups, depending on an instantaneous rate associated to each cell, anda second operation of distributing a global stock of tokens allocated to said time unit in proportion to the number of cells in each group; anda second step of authorizing the access of the cells to the network, including, for each cell which occurs at the input of the network:a first operation of requesting authorization of access of a given cell to the network, said access only occurring in the case of an available token for the group that corresponds to the instantaneous rate of this cell, andat least one additional operation requesting authorization to access the same cell by successively searching for an available token per group that has directly higher instantaneous rates,wherein the at least one additional operation only occurs if access is refused previously, and wherein the at least one additional operation occurs until an authorization of access for one of the groups is encountered, or definitive refusal is encountered.