Method and apparatus for avoiding mutual interference when co-locating mobile station and bluetooth systems
First Claim
1. A communication system, comprising:
- a mobile station having a transmitter operating on one of a plurality of frequency channels in a first RF frequency band;
an associated local area communication subsystem operating by frequency hopping amongst a plurality of channels in a second RF frequency band; and
a controller for altering a frequency hopping pattern of said local area communication subsystem as a function of a currently specified frequency channel in the first frequency band.
1 Assignment
0 Petitions
Accused Products
Abstract
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.
59 Citations
39 Claims
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1. A communication system, comprising:
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a mobile station having a transmitter operating on one of a plurality of frequency channels in a first RF frequency band;
an associated local area communication subsystem operating by frequency hopping amongst a plurality of channels in a second RF frequency band; and
a controller for altering a frequency hopping pattern of said local area communication subsystem as a function of a currently specified frequency channel in the first frequency band. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A communication system, comprising:
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a mobile station having a transmitter operating on one of a plurality of frequency channels in a first RF frequency band;
an associated local area communication subsystem operating by frequency hopping amongst a plurality of channels in a second RF frequency band; and
a controller for altering a frequency hopping pattern of said local area communication subsystem as a function of a currently specified frequency channel in the first frequency band, and as a function of a bandwidth of the currently specified frequency channel. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for operating a communication system, comprising:
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preparing to operate a mobile station transmitter on one of a plurality of frequency channels in a first RF frequency band;
determining if a harmonic of the frequency channel to be operated has the potential to interfere with communications within an associated local area communication subsystem that operates by frequency hopping amongst a plurality of channels in a second RF frequency band; and
if so, altering a frequency hopping pattern of the local area communication subsystem so as to avoid the interference. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A communication system, comprising:
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a mobile station having a transmitter operating on one of a plurality of frequency channels in a first RF frequency band;
an associated local area communication subsystem operating by frequency hopping amongst a plurality of channels in a second RF frequency band; and
a controller for inhibiting transmission of data in the local area communication subsystem when a hopped-to frequency is determined to be a frequency that may be interfered with because of operation of the mobile station transmitter on a currently specified frequency channel in the first frequency band. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method for operating a communication system, comprising:
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preparing to operate a mobile station transmitter on one of a plurality of frequency channels in a first RF frequency band;
determining if a harmonic of the frequency channel to be operated has the potential to interfere with communications within an associated local area communication subsystem that operates by frequency hopping amongst a plurality of channels in a second RF frequency band; and
if so, inhibiting transmission of data on at least one of said plurality of channels, when hopping to the at least one of said plurality of channels, so as to avoid the interference. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39)
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Specification