Method and apparatus for avoiding mutual interference when co-locating mobile station and bluetooth systems

摘要

A communication system includes a mobile station (100) having a transmitter (210) operating on one of a plurality of frequency channels in a first RF frequency band; an associated local area communication subsystem (304) operating by frequency hopping amongst a plurality of channels in a second RF frequency band and a controller (120) that operates in one embodiment for altering a frequency hopping pattern of the local area subsystem as a function of a currently specified frequency channel in the first frequency band. The frequency hopping pattern is preferably also altered as a function of a bandwidth of the currently specified frequency channel of the mobile station. The frequency hopping pattern is altered if the currently specified frequency channel is one having a harmonic frequency that lies in the second frequency band. Preferably, the first frequency band is in the range of about 800 MHz to about 900 MHz , the second frequency band is in the range of about 2400 MHz to about 2500 MHz, and the bandwidth is in the range of about 30 kHz to about 5 MHz. In another embodiment transmission of data is instead inhibited on one or more specified hopped-to frequency channels to avoid interference from the mobile station transmitter.