Patent ID: 8340229

Claim:
A method for reducing interference in a single wireless communications device between a main device of the wireless communications device adapted to transmit information on sub-carriers having frequencies belonging to a main band of frequencies, and at least one auxiliary device of the mobile wireless communications device adapted to emit and receive information within an auxiliary band of frequencies, the auxiliary band being narrower than the main band and included within the main band, the main device and the at least one auxiliary device both being incorporated within a single housing of the single wireless communication device, the method comprising: performing an interference reduction mode within the main device for reducing interference between the main device and the auxiliary device by at least detecting an emission from and/or a reception performed by the at least one auxiliary device by at least analyzing channel state information and detecting operation of the at least one auxiliary device from the channel state information, and checking the detection by using a set of stored interference information respectively associated with a set of several different auxiliary devices, determining from the detecting a group of at least one interfering sub-carrier having a frequency interfering with the auxiliary band of frequencies, and frequency shifting at least a part of the main band of frequencies, including the group of at least one interfering sub-carrier, with a frequency shift so that at least a part of the auxiliary band is excluded from the main band of frequencies; and performing the interference reduction mode comprises regularly checking the operation of the auxiliary device and if the auxiliary device is not detectable, the interference reduction mode concernin the non-detected auxiliary device is stopped.