US 11,889,376 B2 · Method and apparatus for determining location of device using multiple antenna switching

Abstract

The present invention relates to a method and an apparatus for determining a location of a device using multiple antenna switching. A method for determining a location of a device using multiple antenna switching according to one embodiment of the present invention may comprise: a first determination step of determining whether a device enters a target proximity zone or a target zone on the basis of a received signal strength indicator (RSSI) value received through a second antenna having a first coverage; a step of connecting a third antenna through antenna switching if it is determined that the device has entered the target proximity zone or the target zone in the first determining step; a second determination step of determining whether the device enters the target zone on the basis of a RSSI value received through the third antenna having a second coverage; and a step of confirming that the device has entered the target zone if it is determined that the device has entered the target zone in the second determination step.

Claims20

Dependent claims

A method of determining a location of a device by switching between multiple antennas, the method comprising:

in response to a vehicle entering a security mode, connecting a second antenna having a first coverage zone and transmitting an advertising signal;
in response to detecting the device, establishing a connection between the second antenna and a first antenna of the device and requesting the device to transmit received signal strength indicator (RSSI) data;
performing a first determination operation of determining whether the device enters a target proximity zone or a target zone based on the RSSI data received through the second antenna;
in response to determining that the device enters the target proximity zone or the target zone in the first determination operation, connecting a third antenna having a narrower range than the first coverage zone, and disconnecting the second antenna;
performing a second determination operation of determining whether the device enters the target zone based on the RSSI data received through the third antenna;
and
in response to determining that the device enters the target zone in the second determination operation, finally determining that the device enters the target zone.

4 more elements

A vehicle smart key fob device comprising:

a second antenna having a first coverage zone and a third antenna having a second coverage zone narrower than the first coverage zone;
a nearfield communication unit configured to transmit and receive a signal through the second antenna or the third antenna;
an antenna switch configured to connect any one of the second antenna and the third antenna to the nearfield communication unit;
and
a controller configured to:
connect the second antenna and transmit an advertising signal in response to a vehicle entering a security mode,
establish a connection with a first antenna of the device and request the device to transmit received signal strength indicator (RSSI) data in response to detecting the device,
perform a first determination operation of determining whether the device enters a target proximity zone or a target zone based on the RSSI data received through the second antenna,
control the antenna switch to connect the third antenna and to disconnect the second antenna, in response to determining that the device enters the target proximity zone or the target zone through the first determination operation,
perform a second determination operation of determining whether the device enters the target zone based on the RSSI data received through the third antenna, and
finally determine that the device enters the target zone in response to determining that the device enters the target zone through the second determination operation.

8 more elements

Dependencies are inferred from the claim text.

Method and apparatus for determining location of device using multiple antenna switching

Life of this patent

Method and apparatus for determining location of device using multiple antenna switching

Life of this patent

Abstract

Claims20