Patent ID: 6201976
Filing Date: 2001-03-13
Classification: H04W

Abstract:
A data transmission method in a digital mobile network, the method comprising the step ofsetting up an end-to-end data connection in a fixed telecommunication network between a mobile station and another party, the connection comprising a transparent traffic channel leg in a mobile network, a traffic channel leg in the fixed telecommunication network, and an interworking function between the transparent traffic channel leg and the fixed network traffic channel leg,setting a data rate for the transparent traffic channel leg in the mobile network,detecting the data rate of the fixed network traffic channel leg in the interworking function,determining that the detected data rate of the fixed network traffic channel leg is higher than said set data rate in the transparent traffic channel leg in the mobile network,buffering, in the interworking function, data received at said higher rate from the fixed network traffic channel leg,transmitting buffered data from the interworking function to the transparent traffic channel leg of the mobile network at said set data rate,adjusting the data buffering in the interworking function by using data flow control towards the fixed network, andapplying protocol-sensitive rate adaptation in the interworking function on data transmitted from the transparent traffic channel leg to the fixed network traffic channel leg.