Patent ID: 11889380
Assignee: DENSO CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 11:
12. A method of establishing location information with respect to a portable device and a data access point, the method comprising:
disposing a master device in a fixed position relative to the data access point;
communicating between the master device and at least one of the portable device and one or more sensor devices;
receiving wireless communications in a first antenna;
providing first output corresponding to the wireless communications received in the first antenna;
receiving wireless communications in a second antenna;
providing second output corresponding to the wireless communications received in the second antenna;
determining a characteristic signal for at least one antenna output of the first and second outputs based on a plurality of time-spaced measurements of the at least one antenna output;
determining an output signal based on a function of the characteristic signal;
determining a location of the portable device relative to the data access point based on the output signal, whereby the function mitigates environmental effects in the at least one antenna output;
determining a zone based on a receive range of the first and second antennas located in or near the data access point;
identifying presence of the portable device within the zone based on the output signal; and
authorizing performance of at least one service function between the portable device and the data access point, wherein the at least one service function includes a physical access to connection points, adjustment of access to data, and targeted marketing for a user of the portable device.