Method and apparatus for adapting a transmission bit rate of a d

Details Method and apparatus for adapting a transmission bit rate of a d Method and apparatus for adapting a transmission bit rate of a d

1996-08-28

1999-01-26

Nguyen, Chau

Multiplex communications

Data flow congestion prevention or control

Control of data admission to the network

370252, H04L 1226

Patent

active

058645365

ABSTRACT:
A method and an apparatus for adapting a transmission bit rate of each individual one of a plurality of connections to an available bit rate capacity in a data multiplexer operating according to an asynchronous transfer mode includes storage in memory of a total available bit rate for all of the connections. An actual bit rate of all of the connections together is continuously ascertained. A difference between the available bit rate and the actual bit rate is continuously calculated. A number of those connections without underloading is continuously ascertained. A continuous recursive calculation of a current fair share value from the former fair share value, of a number of connections without underloading, and of a difference between the available and the actual bit rate, is performed. The fair share value is written in resource management cells, if the current fair share value is less than the value already contained in the resource management cells. The transmission bit rate of each individual connection is adjusted in accordance with the value in the various resource management cells.

REFERENCES:
patent: 5119367 (1992-06-01), Kawakatsu
patent: 5402426 (1995-03-01), Foglar
patent: 5455826 (1995-10-01), Ozveren
patent: 5701292 (1997-12-01), Chiussi
patent: 5734825 (1998-03-01), Lauck
Simon Davis: "The Enhanced Rate Based ABR Scheme", Mar. 29, 1995.

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