# US 11,993,228 B2 · Passive entry/passive start systems and methods for vehicles > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,993,228 B2 - Document ID: US11993228B2 - Status: Granted - Kind: B2 - Application number: 18/176,169 - Filed: 2023-02-28 - Published: 2023-07-27 - Granted: 2024-05-28 - Earliest claimed: 2016-10-12 - Assignees: DENSO International America, Inc.; Denso Corporation - Applicants: DENSO International America, Inc.; Denso Corporation - Inventors: Kyle Golsch; Steven Sute - Web page: https://patentgrep.com/patent/US11993228B2 ## CPC - B60R 25/24: using electronic identifiers containing a code not memorised by the user - B60R 25/20: Means to switch the anti-theft system on or off - B60R 25/2018: {Central base unlocks or authorises unlocking} - B60R 25/245: {where the antenna reception area plays a role} - B60W 10/08: including control of electric propulsion units, e.g. motors or generators - G01S 5/0284: {Relative positioning} - G01S 5/04: Position of source determined by a plurality of spaced direction-finders - G01S 13/765: {with exchange of information between interrogator and responder} - G01S 13/876: {Combination of several spaced transponders or reflectors of known location for determining the position of a receiver (G01S13/874 takes precedence)} - G07C 9/00309: {operated with bidirectional data transmission between data carrier and locks} - H04W 4/30: Services specially adapted for particular environments, situations or purposes - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 48/04: based on user or terminal location or mobility data, e.g. moving direction, speed - B60R 2325/101: Bluetooth® - B60R 2325/205: Mobile phones - G07C 2009/00547: {starting ignition} - G07C 2209/63: Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle - H04W 4/023: {using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds} - H04W 4/48: for in-vehicle communication - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A sensor is configured to receive connection information from a portable device via a communication gateway in a vehicle and to communicate with a portable device using impulse radio (IR) ultra-wide band (UWB) communication based on the connection information. A location of the portable device is determined based on ranging using IR UWB communication. ## Claims ### Claim 1 A sensor configured to: receive connection information from a portable device via a communication gateway in a vehicle; and communicate with a portable device using impulse radio (IR) ultra-wide band (UWB) communication based on the connection information; wherein a location of the portable device is determined based on ranging using IR UWB communication. ### Claim 2 (depends on 1) The sensor of claim 1, wherein the sensor is further configured to communicate signal information with the portable device, the signal information including at least one of a time of arrival and a time difference of arrival. ### Claim 3 (depends on 1) The sensor of claim 1, wherein the ranging is two-way ranging. ### Claim 4 (depends on 1) The sensor of claim 1, wherein the communication gateway is configured to establish a Bluetooth Low Energy communication connection with the portable device. ### Claim 5 (depends on 1) The sensor of claim 1, wherein the ranging using IR UWB communication relates to at least one of a time of arrival, a time of flight, and/or a time difference of arrival. ### Claim 6 (depends on 1) The sensor of claim 1, wherein the sensor is one of a plurality of sensors in the vehicle and wherein ranging using IR UWB communication between the portable device and the plurality of sensors is performed between communication connection events of a Bluetooth Low Energy communication connection established between the communication gateway and the portable device. ### Claim 7 (depends on 6) The sensor of claim 6, wherein all of the ranging using IR UWB communication between the portable device and the plurality of sensors is performed between communication connection events of the Bluetooth Low Energy communication connection. ### Claim 8 A method comprising: receiving, with a sensor, connection information from a portable device via a communication gateway in a vehicle; and communicating, with the sensor, with a portable device using impulse radio (IR) ultra-wide band (UWB) communication based on the connection information; wherein a location of the portable device is determined based on ranging using IR UWB communication. ### Claim 9 (depends on 8) The method of claim 8, further comprising communicating, with the sensor, signal information with the portable device, the signal information including at least one of a time of arrival and a time difference of arrival. ### Claim 10 (depends on 8) The method of claim 8, wherein the ranging is two-way ranging. ### Claim 11 (depends on 8) The method of claim 8, wherein the communication gateway is configured to establish a Bluetooth Low Energy communication connection with the portable device. ### Claim 12 (depends on 8) The method of claim 8, wherein the ranging using IR UWB communication relates to at least one of a time of arrival, a time of flight, and/or a time difference of arrival. ### Claim 13 (depends on 8) The method of claim 8, wherein the sensor is one of a plurality of sensors in the vehicle, the method further comprising: performing ranging using IR UWB communication between the portable device and the plurality of sensors between communication connection events of a Bluetooth Low Energy communication connection established between the communication gateway and the portable device. ### Claim 14 (depends on 13) The method of claim 13, wherein all of the ranging using IR UWB communication between the portable device and the plurality of sensors is performed between communication connection events of the Bluetooth Low Energy communication connection.