Method and system for detection of passive intermodulation interference emissions
First Claim
1. A method for detecting intermodulation emissions, the method comprising:
- (a) retrieving signal quality measurement (SQM) data generated by a receiver without any test signal transmissions;
(b) determining whether there is an intermodulation hit in associated with the SQM data, the intermodulation hit defined as a condition that exists when one or more potential intermodulation product frequency or frequencies from a current set of normal operation transmit frequencies coincide with one or more monitored normal operation receive frequency or frequencies;
(i) storing the SQM data in a first data set if there is no intermodulation hit; and
(ii) storing the SQM data in a second data set if there is an intermodulation hit;
(c) determining whether there are one or more faults in the first data set;
(i) clearing a confirmation count for an intermodulation failure if there are one or more faults in the first data set; and
(ii) returning to step (a) to restart the method;
(d) determining whether there are one or more faults in the second data set if there are not one or more faults in the first data set; and
(i) clearing the confirmation count if there are not one or more faults in the second data set; and
(ii) returning to step (a) to restart the method.
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Abstract
A method and system for detecting intermodulation emissions, such as passive intermodulation emissions, is provided. The method comprises retrieving signal quality measurement (SQM) data, and determining whether there is an intermodulation hit in the SQM data. If there is no intermodulation hit, the SQM data is stored in a first data set; if there is an intermodulation hit, the SQM data is stored in a second data set. The method then determines whether there are one or more faults in the first data set. If there are, a confirmation count for an intermodulation failure is cleared, and the method starts again. If there are not one or more faults in the first data set, a determination is made whether there are one or more faults in the second data set. If not, the confirmation count is cleared, and the method starts again. An intermodulation failure can be confirmed if there are one or more faults in the second data set.
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Citations
20 Claims
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1. A method for detecting intermodulation emissions, the method comprising:
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(a) retrieving signal quality measurement (SQM) data generated by a receiver without any test signal transmissions; (b) determining whether there is an intermodulation hit in associated with the SQM data, the intermodulation hit defined as a condition that exists when one or more potential intermodulation product frequency or frequencies from a current set of normal operation transmit frequencies coincide with one or more monitored normal operation receive frequency or frequencies; (i) storing the SQM data in a first data set if there is no intermodulation hit; and (ii) storing the SQM data in a second data set if there is an intermodulation hit; (c) determining whether there are one or more faults in the first data set; (i) clearing a confirmation count for an intermodulation failure if there are one or more faults in the first data set; and (ii) returning to step (a) to restart the method; (d) determining whether there are one or more faults in the second data set if there are not one or more faults in the first data set; and (i) clearing the confirmation count if there are not one or more faults in the second data set; and (ii) returning to step (a) to restart the method. - View Dependent Claims (2, 3, 4, 5)
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6. A computer program product, comprising:
a computer-readable medium having program instructions stored thereon for a method of detecting passive intermodulation emissions, the method comprising; (a) retrieving signal quality measurement (SQM) data generated by a receiver without any test signal transmissions; (b) determining whether there is a passive intermodulation hit associated with the SQM data, the passive intermodulation hit defined as a condition that exists when one or more potential intermodulation product frequency or frequencies from a current set of normal operation transmit frequencies coincide with one or more monitored normal operation receive frequency or frequencies; (i) storing the SQM data in a first data set if there is no passive intermodulation hit; and (ii) storing the SQM data in a second data set if there is a passive intermodulation hit; (c) returning to step (a), if a timer has not expired, to restart the method; (d) determining whether there are one or more faults in the first data set if the timer has expired; (i) clearing a confirmation count for a passive intermodulation failure if there are one or more faults in the first data set; and (ii) returning to step (a) to restart the method; (e) determining whether there are one or more faults in the second data set if there are not one or more faults in the first data set; and (i) clearing the confirmation count if there are not one or more faults in the second data set; and (ii) returning to step (a) to restart the method; (f) confirming a passive intermodulation failure if there are one or more faults in the second data set. - View Dependent Claims (7, 8, 9, 10)
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11. A system for detecting passive intermodulation emissions, the system comprising:
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at least one data receiver that outputs signal quality measurement (SQM) data without any test signal transmissions; at least one data storage device that saves the SQM data from the data receiver; at least one data processor operatively coupled to the data storage device; and a program module having instructions executable by the processor to; (a) retrieve the SQM data from the storage device; (b) determine whether there is a passive intermodulation hit associated with the SQM data, the passive intermodulation hit defined as a condition that exists when one or more potential intermodulation product frequency or frequencies from a current set of normal operation transmit frequencies coincide with one or more monitored normal operation receive frequency or frequencies; (i) store the SQM data in a first data set if there is no passive intermodulation hit; and (ii) store the SQM data in a second data set if there is a passive intermodulation hit; (c) determine whether there are one or more faults in the first data set; (i) clear a confirmation count for a passive intermodulation failure if there are one or more faults in the first data set; and (ii) repeat instructions (a) to (c); (d) determine whether there are one or more faults in the second data set if there are not one or more faults in the first data set; (i) clear the confirmation count if there are not one or more faults in the second data set; and (ii) repeat instructions (a) to (d); (e) confirm a passive intermodulation failure if there are one or more faults in the second data set. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification