Patent ID: 6647006
Filing Date: 2003-11-11
Classification: H04J,H04W

Abstract:
A data transmission method in a digital mobile communications system, the method comprising the steps oftransferring data in radio frames via N traffic channels over a radio interface between a radio access network element, such as a base station, and a mobile station, a total data rate at the radio interface being N*S1, where N is an integer and S1 is a data rate of a single traffic channel, transferring data in transmission frames via M transmission channels over a network interface between the radio access network element and an interworking function, the total data rate at the network interface being M*S2, where M&gE;2N and S2 is a data rate of a single transmission channel and S21 and M*S2>N*S1, rate-adapting the total data rates of the network interface and the radio interface by transferring fill data in addition to actual data in said transmission frames between the radio access network element and the interworking function, so that an average data rate at the network interface corresponds to a total data rate N*S1 at the radio interface, and the combined data rate of the fill data and the actual data corresponds to the total data rate M*S2 at the network interface.