Method for resynchronization of a mobile radio receiver in the event of a change over between two different modulation methods

[0027]FIG. 1 illustrates a structure of a data burst that can be interchanged by a radio in a data transmission system, for example a Bluetooth system, between a base station and at least one mobile station. The frequencies available for data transmission in piconetworks are defined by the ISM frequency bands (Industrial, Scientific and Medical). The ISM frequency bands are reserved for the radio-oriented and licenceless application of weak transmission power.

[0028] By way of example, in piconetworks, such data bursts or data packets are intended to be transmitted in the 2.4 GHz ISM frequency band. The competent regulatory authority, the Federal Communications Commission (FCC), has established FCC rules for the utilization of the ISM frequency bands which state, inter alia, that the transmission frequency within the frequency band must be varied after a specific time in accordance with a frequency hopping method. For this purpose, the frequency band is divided into frequency channels