Patent ID: 8855570

Claim:
A method of operating a communication device having a plurality of concurrently operating transceivers, each operating in a respectively different one of a plurality of communication systems, wherein the plurality of concurrently operating transceivers includes a first transceiver and a second transceiver, the method comprising: the first transceiver ascertaining whether transmissions by the second transceiver are causing interference in a receiver of the first transceiver and if so, performing one or more interference response actions, wherein the one or more interference response actions include: ascertaining whether the interference is at an acceptable level and if so then taking no further interference response actions; and if the interference is ascertained to be at an unacceptable level, then communicating an interference mitigation request to the second transceiver, wherein: the second transceiver is operating on a first frequency in a first frequency band; the first transceiver is operating in a second frequency band that is different from the first frequency band; the first frequency band partially overlaps with at least one of a passband and a transition band of a band select filter of the first transceiver's receiver; the interference mitigation request includes a request for the second transceiver to cease operating on the first frequency in the first frequency band and instead to operate on a second frequency; the request for the second transceiver to cease operating on the first frequency in the first frequency band and instead to operate on the second frequency is a request for the second transceiver to cease operating on the first frequency in the first frequency band and instead to operate on a second frequency in the first frequency band that is more attenuated by the band select filter of the first transceiver's receiver than the first frequency is; and the method further comprises ascertaining an amount by which the second frequency can be permitted to lie outside a stop band of the first transceiver's receiver's band select filter while maintaining a level of receiver performance above a predetermined threshold, wherein the second frequency lies no farther outside the stop band of the first transceiver's receiver's band select filter than the ascertained amount.