Invention Grant
US09172478B2 Frequency switching method and apparatus for radio data system 有权
无线电数据系统的频率切换方法和装置

Frequency switching method and apparatus for radio data system
Abstract:
A method and an apparatus for switching from the main frequency to an Alternative Frequency (AF) providing the same station is provided. The method includes measuring a received signal strength of a main frequency, receiving at least one alternative frequency list, establishing an accumulated alternative frequency list including all previously received alternative frequency lists, comparing the received signal strength of the main frequency with a predefined reference received signal strength, and attempting, when the received signal strength of the main frequency is less than the reference received signal strength, switching to an alternative frequency in the accumulated alternative frequency list.
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