Isco International, Inc.

Motorola Corporation

Motorola Mobility LLC

Pablo Tacconi

Amr Abdelmonem

Igor Goodman

Nauman Zia

Guenadi Miliavski

Gregory M Agami

Jeffery C Bell

A system that incorporates aspects of the subject disclosure may perform operations including, for example, receiving, via an antenna, a signal generated by a communication device, detecting an interference in the signal, the interference generated by one or more transmitters unassociated with the communication device, and the interference determined from signal characteristics associated with a signaling protocol used by the one or more transmitters, and performing signal conditioning on the signal to reduce the interference. Other embodiments are disclosed.

Method and apparatus for performing signal conditioning to mitigate interference detected in a communication system

Aspects of the subject disclosure may include, for example, receiving, via an antenna, a communication signal generated by a communication device, and detecting interference in the communication signal, wherein the interference is generated by one or more interference sources, wherein the interference is detected by monitoring a near field region of the antenna, an intermediate field region of the antenna, a far field region of the antenna, or any combinations thereof, wherein the monitoring excludes monitoring only the far field region of the antenna. Other embodiments are disclosed.

Method and system for mitigating interference in the near field

Aspects of the subject disclosure may include, for example, identifying one or more radiating elements of an antenna system that are to be adjusted based on interference determined to affect an operation of the antenna system, and altering one or more properties of the one or more radiating elements to effect polarization adjusting such that an impact of the interference on the antenna system is minimized. Other embodiments are disclosed.

Method and system for addressing interference by configuring or adapting antenna structures

Aspects of the subject disclosure may include, for example, causing radio frequency (RF) signals to be transmitted via an antenna system in a plurality of directions, and responsive to transmission of the RF signals, monitoring signals that are received by the antenna system to detect an interference signal that originates from a passive intermodulation (PIM) source. Other embodiments are disclosed.

Methods and systems for detecting, measuring, and/or locating passive intermodulation (PIM) sources via beamforming

Aspects of the subject disclosure may include, for example, obtaining data regarding interference detected in a received communication signal, and performing phase adjusting for one or more radiating elements of an antenna system such that an impact of the interference on the antenna system is minimized. Other embodiments are disclosed.

Method and system for mitigating interference by displacing antenna structures

Aspects of the subject disclosure may include, for example, modifying one or more signals in a downlink (DL) transmit path of a base station, resulting in one or more modified signals, causing one or more radio frequency (RF) signals corresponding to the one or more modified signals to be transmitted by the base station, and responsive to transmission of the one or more RF signals, monitoring uplink (UL) signals received by the base station to detect interference that originates from one or more passive intermodulation (PIM) sources. Other embodiments are disclosed.

Methods and systems for detecting, measuring, and/or locating passive intermodulation sources via downlink (DL) signal injection

Aspects of the subject disclosure may include, for example, identifying an interference signal in one or more radio frequency (RF) signals received by an antenna system, the interference signal originating from an interference source, and computing an angle of arrival (AoA) of the interference signal to obtain an estimated location of the interference source. Other embodiments are disclosed.

Methods and systems for locating interference sources via angle of arrival (AoA)

Aspects of the subject disclosure may include, for example, obtaining data regarding interference detected in a received communication signal, and performing polarization adjusting for one or more orthogonally-polarized element pairs of an antenna system such that an impact of the interference on the antenna system is minimized. Other embodiments are disclosed.

Method and system for polarization adjusting of orthogonally-polarized element pairs

A system that incorporates aspects of the subject disclosure may perform operations including, for example, receiving an uplink signal generated by a communication device; generating an estimation of one or more downlink signals generated by one or more transmitters; detecting a passive intermodulation interference in the uplink signal, wherein the passive intermodulation interference is caused by the one or more transmitters, wherein the passive intermodulation interference is detected by the circuit based on a comparison of characteristics of the uplink signal with the estimation of the one or more downlink signals generated by the one or more transmitters, and wherein the one or more transmitters are unassociated with the communication device generating the uplink signal; and performing signal conditioning on the uplink signal to reduce the passive intermodulation interference. Other embodiments are disclosed.

Method and apparatus for detecting and mitigating passive intermodulation interference in a communication system

Aspects of the subject disclosure may include, for example, obtaining data regarding interference detected in a received communication signal, and performing polarization adjusting by rotating one or more radiating elements of an antenna system such that an impact of the interference on the antenna system is minimized. Other embodiments are disclosed.

Method and system for mitigating interference by rotating antenna structures

Aspects of the subject disclosure may include, for example, detecting an interference signal in two or more signals received via orthogonally-polarized elements of an antenna system, the interference signal originating from a passive intermodulation (PIM) source, measuring a polarization of the interference signal, by comparing the two or more signals, to estimate a shape of the PIM source, and generating information regarding the shape to facilitate locating of the PIM source. Other embodiments are disclosed.

Methods and systems for estimating the shape of an object generating passive intermodulation (PIM) interference

Aspects of the subject disclosure may include, for example, obtaining data regarding passive intermodulation (PIM) detected in a received communication signal, and performing polarization adjusting for a communications system such that an impact of the PIM on the communications system is minimized. Other embodiments are disclosed.

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Arlington, TX, United States of America

Pablo Tacconi