Method for servicing a trunkline among data connections having different data rates wherein all data connections are given fair allocation to the trunkline
AssigneeSiemens Aktiengesellschaft
InventorsRolf Grabenhorst, Eckhard Schroeder, Gerd Niestegge
Life of this patent
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Abstract
For a virtual connection set up using an asynchronous transmission method which transmits information cells with a rate which is not constant over a relatively long period, the maximum rate may be limited, on the one hand, and the access of the information cells to a trunk line carrying information cells of a plurality of virtual connections may be regulated, on the other hand. As a result, the rate of information cells of a virtual connection is limited.
Claims7
A method for regulating access of data blocks having a predetermined number of data which belong to a plurality of data connections to a trunk line which is used for transporting in time slots in each case one information cell exhibiting a data field accommodating the data block and a header preceding the former which designates the respective data connection in accordance with an asynchronous transmission method, the method comprising the steps of:
- writing the data blocks into data-connection-individual buffer memories;
- establishing a respective data block rate for each data connection;
- providing a counter for each data connection;
- designating those of the data connections in which the counters are below a predetermined count for forwarding a data block to the trunk line;
- forwarding a data block from the associated buffer memory to the trunk line for a respective data connection which exhibits a respective lowest count in the current time slot;
- incrementing the count of the data connection for which a data block is forwarded to the trunk line during a time slot by a value corresponding to the associated data block rate;
- and
- decrementing the count of those of the data connections for which no data block is forwarded during a current time slot.
Dependencies are inferred from the claim text.