Locally Adjusted Radio Frequency Coverage Maps in Wireless Networks

A method comprising:

• receiving calibration data comprising observed received signal strength values at one or more calibration points corresponding to a radio frequency transmitter;
• identifying an applicable coverage map, wherein the coverage map provides, for the radio frequency transmitter, estimated received signal strength values at one or more locations;
• determining one or more offset values at the one or more calibration points, wherein an offset value is based on a difference between an observed received signal strength value and an estimated received signal strength value at a given calibration point;
• defining a correction cone for the one or more calibration points based on the respective offset values and a radius parameter, the correction cone defining for one or more location bins a correction to be applied to the RF coverage map based on a distance from the one or more calibration points and the one or more offset values;
• and
• adjusting one or more estimated received signal strength values at one or more location bins of the coverage map based on a distance from the one or more calibration points and the one or more offset values.

A system comprising:

• a wireless network infrastructure node operable to:
• receive calibration data comprising observed received signal strength values at one or more calibration points corresponding to a radio frequency transmitter;
• identify an applicable coverage map, wherein the coverage map provides, for the radio frequency transmitter, estimated received signal strength values at one or more locations;
• determine one or more offset values at the one or more calibration points, wherein an offset value is based on a difference between an observed received signal strength value and an estimated received signal strength value at a given calibration point;
• define a correction cone for the one or more calibration points based on the respective offset values and a radius parameters the correction cone defining for one or more location bins a correction to be applied to the RF coverage map based on a distance from the one or more calibration points and the one or more offset values;
• and adjust one or more estimated received signal strength values at one or more location bins of the coverage, map based on a distance from the one or more calibration points and the one or more offset values;
• and
• a wireless access point operable to facilitate collection of the calibration data.