Automatic diagnostic for detection of interference in wireless communication system
AssigneeAT&T Wireless Services, Inc.
InventorLouis J. Ficarra
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Abstract
In an automated diagnostic method for identifying interference events at a receiver of a wireless communication system, the receiver is queried for energy measurement data. From the energy measurement data, a probability distribution of the energy is calculated. An interference event may be identified if the calculated probability distribution exceeds a predetermined threshold.
Claims23
A method of identifying interference events at a receiver of a wireless communication system, comprising:
- querying the receiver for measured noise floor data,
- calculating, from the measured noise floor data, a probability distribution of the noise floor, and
- identifying an interference event if the calculated probability distribution exceeds a predetermined threshold.
A diagnostic testing method for testing a plurality of base stations for interference, comprising:
- querying each base station subject to test for measured noise floor data, calculating, from the measured noise floor data of each base station, a probability distribution of noise floor at the base station,
- calculating, from the measured noise floor data, a probability distribution of interference energy of the set of base stations subject to test, and
- identifying a base station as suffering interference based on a comparison of the noise floor probability distribution of the base station with the probability distribution of interference energy of the base stations subject to test.
A method of identifying interfered channels in a wireless communication system, comprising:
- querying each base station subject to test for measured noise floor data of each idle channel at the base station,
- calculating, for each idle channel of each base station, a probability distribution of the noise floor of the channel,
- calculating, from the energy measurement data, a probability distribution of interference energy for all base stations subject to test, and
- identifying a channel as suffering interference based on a comparison of the channel's noise floor probability distribution with the probability distribution of interference energy for all base stations subject to test.
A method of identifying interfered channels in a wireless communication system, comprising:
- querying each base station subject to test for measured noise floor data at the base station and for measured data representing channel quality metrics at the base station,
- calculating a probability distribution of the noise floor of each base station based upon the measured noise floor data of the respective base station,
- calculating a probability distribution of the channel quality data of each base station based upon the measured channel quality metrics,
- calculating a probability distribution of interference energy for all base stations subject to test,
- calculating a probability distribution of channel quality metrics for all base stations subject to test, and
- identifying a base station as suffering interference based on a comparison of the base station's noise floor probability distribution with the probability distribution of interference energy and a comparison of the base station's channel quality probability distribution with the channel quality probability distribution for all base stations subject to test.
Dependencies are inferred from the claim text.