Vehicle roadside unit interference detection
AssigneeFord Global Technologies, LLC
InventorsSyed Amaar Ahmad, Ivan Vukovic, Colin Lieberman
Life of this patent
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Abstract
An infrastructure device includes a transceiver, programmed to communicate with a plurality of vehicles, wherein at least one of the vehicles is located within a distance defined from a location of the infrastructure device, and at least one of the vehicles is located outside the distance from the location of the infrastructure device; and a controller, programmed to measure a channel busy ratio (CBR) for communication with the plurality of vehicles, measure a package error rate (PER) for communication with one or more of the vehicles located within the distance, and responsive to the CBR being greater than a CBR threshold, or the PER being greater than a PER threshold, record an interference event into a log.
Claims17
An infrastructure device, comprising:
- a transceiver, programmed to communicate with a plurality of vehicles, wherein at least one of the vehicles is located within a distance defined from a location of the infrastructure device, and at least one of the vehicles is located outside the distance from the location of the infrastructure device;
- and
- a controller, programmed to
- measure a channel busy ratio (CBR) for communication with the plurality of vehicles,
- measure a package error rate (PER) for communication with one or more of the vehicles located within the distance,
- responsive to the CBR being greater than a CBR threshold, or the PER being greater than a PER threshold, record an interference event into a log, and
- adjust the CBR threshold using a number of packets communicated with the vehicles.
A communication device, comprising:
- a wireless transceiver, programmed to communicate with a plurality of entities, wherein at least one of the entities is located within a geo-fence defined around a location of the communication device, and at least one of the entities is located outside the geo-fence;
- and
- a controller, programmed to
- measure a first parameter for communications with the plurality of entities,
- measure a second parameter for communications with one or more of the entities located within the geo-fence, the second parameter being different from the first parameter, and
- responsive to the first parameter being greater than a first threshold, and the second parameter being greater than a second threshold, record an interference event into a log, wherein the first threshold is a variable that increases with an increasing total number of the plurality of entities.
A method for a communication device comprising:
- defining, via a processor, a geo-fence within a distance threshold from the communication device;
- measuring, via a transceiver, a channel busy ratio (CBR) for communications with a plurality of vehicles having at least one vehicle located within the geo-fence and at least one vehicle located outside the geo-fence;
- measuring, via the transceiver, a package error rate (PER) for communications with one or more of the vehicles located within the geo-fence;
- responsive to the CBR being greater than a CBR threshold, and the PER being greater than a PER threshold, record, via the processor, an interference event into a log;
- and
- adjusting, via the processor, the distance threshold according to a time of a day.
Dependencies are inferred from the claim text.