Downlink interference detection using transmission matrices
AssigneeSpectrum Effect Inc.
InventorsEamonn Gormley, Chaz Immendorf, Rekha Menon
Life of this patent
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Abstract
A method of detecting downlink interference in a communications system may include selecting a set of user equipment for measuring interference and generating a downlink interference neighbor list for some or all of the user equipment in the set. Empty resource blocks that are common to base stations on each downlink interference neighbor list are identified, and signals that are received by the set of user equipment during the empty resource blocks are analyzed to detect interference. Certain aspects of the method may be practiced before or after an interference detection period. A system for detecting downlink interference is also provided.
Claims18
A method of detecting downlink interference that is external to a cellular telecommunications network comprising a plurality of cells, the method comprising:
- generating, for each user equipment (UE) of a plurality of UE of the cellular telecommunications network, respective downlink interference neighbor lists by analyzing measurements of signals transmitted by neighboring base stations in the cellular telecommunications network;
- selecting a set of UE for measuring the external interference from the plurality of UE;
- identifying, for each downlink interference neighbor list, empty resource blocks that are common to base stations of the downlink interference neighbor list by collating transmission matrices of the base stations of the downlink interference neighbor list after performing measurements of the external interference by the set of UE;
- and
- analyzing, by a computer processor, the external interference received by the set of UE during the empty resource blocks.
A system for identifying interference that is external to a cellular network comprising a plurality of cells, the system comprising:
- a plurality of base stations;
- a memory;
- a processor;
- and
- one or more non-transitory computer readable medium associated with the processor, the one or more non-transitory computer readable medium having computer executable instructions stored thereon which, when executed by an associated one or more processor, perform the following steps:
- generating, for each user equipment (UE) of a plurality of UE of the cellular telecommunications network, respective downlink interference neighbor lists by analyzing measurements of signals transmitted by neighboring base stations of the cellular network;
- selecting a set of EE for measuring the external interference from the plurality of UE;
- identifying, for each downlink interference neighbor list, empty resource blocks that are common to base stations of the downlink interference neighbor list by collating transmission matrices of the base stations of the downlink interference neighbor list after performing measurements of the external interference by the set of UE;
- and
- analyzing, by a computer processor, the external interference received by the set of UE during the empty resource blocks.
Dependencies are inferred from the claim text.