Infineon Technologies Ag

Lantiq Deutschland Gmbh

Daniel Goryn

Achim Degenhardt

In a buffer () to compensate for runtime fluctuations of data packets () transmitted over a transmission line (), in order to be able to set optimally an additional retransmission delay by the buffer () it is proposed to calculate the probable hold time of a data packet () immediately after arrival of a data packet () in the buffer (). The additional retransmission delay by the buffer () is set based on the probable hold time of the data packets () in the buffer (). To guarantee optimum setting of the retransmission delay, both the maximum detected probable hold time and the minimum detected probable hold time of the data packets () are used. This is achieved preferably by means of a minimum value detector and a maximum value detector which detect extreme values of the probable hold time occurring at specific time intervals.

Method and device for compensating for runtime fluctuations of data packets

To compensate for jitter in the delay of data packets () which are transmitted over a transmission link (), e.g. a data network, the data packets () are buffer-stored in a jitter buffer () and are then played out of the jitter buffer () at preset intervals of time, after an additional play-out delay (&#x394;T). The additional play-out delay (&#x394;T) is set in this case as a function of a magnitude that is determined of the delay jitter, for which purpose differences in delay between successive data packets () are determined and an integrated value of the differences in delay is formed by integration. The additional play-out delay (&#x394;T) is then set on the basis of the integrated value of the differences in delay.

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Munich, Germany

Daniel Goryn