# US 11,029,164 B2 · Dynamic determination of route conclusion before reaching destination > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,029,164 B2 - Document ID: US11029164B2 - Status: Granted - Kind: B2 - Application number: 16/406,553 - Filed: 2019-05-08 - Published: 2020-11-12 - Granted: 2021-06-08 - Earliest claimed: 2019-05-08 - Assignees: General Motors Corporation - Applicants: General Motors LLC - Inventors: Dexter C. Lowe; Ryan Olejniczak; Esteban Camacho - Web page: https://patentgrep.com/patent/US11029164B2 ## CPC - G01C 21/3423: {Multimodal routing} - G01C 21/3655: {Timing of guidance instructions} - G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S) ## Abstract Vehicle navigation systems and methods may generally provide navigation instructions in a vehicle. A navigation guidance session to a destination may be initiated at a telematics unit installed to the vehicle. Upon determination that the vehicle has been parked, example methods and systems may facilitate continuing the navigation guidance session when a park time duration is less than a pedestrian travel time associated with pedestrian travel from the vehicle parking location to the destination. Alternatively, terminating the navigation guidance session may be facilitated when the park time duration is at least equal to the pedestrian travel time. ## Claims ### Claim 1 A method of providing navigation instructions in a vehicle, comprising: (a) initiating a navigation guidance session to a destination for the vehicle at a telematics unit installed to the vehicle; (b) determining that the vehicle has been parked in a parking location at a park time before the vehicle reaches the destination, the parking location being within a predetermined maximum distance of the destination; (c) determining that a user has left the vehicle while the vehicle is in the parking location; (d) in response to the determinations in steps (b) and (c), determining (1) a pedestrian travel distance from the parking location to the destination, and (2) a pedestrian travel time for the determined pedestrian travel distance; (e) detecting a vehicle restart; (f) determining a park time duration from at least the park time and the vehicle restart; and (g1) continuing the navigation guidance session when the park time duration is less than the pedestrian travel time; and (g2) terminating the navigation guidance session when the park time duration is at least equal to the pedestrian travel time. ### Claim 2 (depends on 1) The method of claim 1, wherein the navigation guidance session is continued in step (g1) or terminated in step (g2) automatically by the telematics unit. ### Claim 3 (depends on 1) The method of claim 1, wherein the navigation guidance session is continued in step (g1) or terminated in step (g2) automatically by a remote facility. ### Claim 4 (depends on 1) The method of claim 1, wherein the navigation guidance session is continued in step (g1) or terminated in step (g2) by a user prompt provided by the telematics unit. ### Claim 5 (depends on 1) The method of claim 1, wherein step (c) includes determining that a keyfob paired with the vehicle has left a proximity of the vehicle. ### Claim 6 (depends on 1) The method of claim 1, wherein step (c) includes determining that a Bluetooth device paired with the vehicle has left a proximity of the vehicle. ### Claim 7 (depends on 1) The method of claim 1, wherein at least one of steps (f), (g1), and (g2) includes determining a time-to-live (TTL) from at least a distance from the parking location to the destination. ### Claim 8 (depends on 7) The method of claim 7, wherein the TTL is determined from at least an average pedestrian travel speed. ### Claim 9 (depends on 1) The method of claim 1, wherein the telematics unit is configured to terminate the navigation guidance session in response to receiving a navigation termination command from a passenger of the vehicle. ### Claim 10 A method of providing navigation instructions in a vehicle, comprising: (a) initiating a navigation guidance session to a destination for the vehicle at a telematics unit installed to the vehicle; (b) determining that the vehicle has been parked in a parking location at a park time before the vehicle reaches the destination, the parking location being within a predetermined maximum distance of the destination; (c) determining that a user has left the vehicle while the vehicle is in the parking location; (d) in response to the determinations in steps (b) and (c), determining (1) a pedestrian travel distance from the parking location to the destination, and (2) a pedestrian travel time for the determined pedestrian travel distance; (e) detecting a vehicle restart; (f) determining a park time duration from at least the park time and the vehicle restart; and (g1) automatically continuing the navigation guidance session when the park time duration is less than the pedestrian travel time; and (g2) automatically terminating the navigation guidance session when the park time duration is at least equal to the pedestrian travel time. ### Claim 11 (depends on 10) The method of claim 10, wherein step (c) includes determining that a keyfob paired with the vehicle has left a proximity of the vehicle. ### Claim 12 (depends on 10) The method of claim 10, wherein step (c) includes determining that a Bluetooth device paired with the vehicle has left a proximity of the vehicle. ### Claim 13 (depends on 10) The method of claim 10, wherein at least one of steps (f), (g1), and (g2) includes determining a time-to-live (TTL) from at least a distance from the parking location to the destination. ### Claim 14 (depends on 13) The method of claim 13, wherein the TTL is determined from at least an average pedestrian travel speed. ### Claim 15 A system for navigating a vehicle, comprising: a telematics unit installed in the vehicle and configured to provide a route to a destination to a vehicle user in a navigation guidance session; wherein the telematics unit is configured to determining that the vehicle has been parked in a parking location at a park time before the vehicle reaches the destination, the parking location being within a predetermined maximum distance of the destination; determine that a user has left the vehicle while the vehicle is in the parking location, determine a pedestrian travel distance from the parking location to the destination, and a pedestrian travel time for the determined pedestrian travel distance, detect a vehicle restart; and determine a park time duration from at least the park time and the vehicle restart; wherein the telematics unit continues the navigation guidance session when the park time duration is less than the pedestrian travel time, and the telematics unit terminates the navigation guidance session when the park time duration is at least equal to the pedestrian travel time. ### Claim 16 (depends on 15) The system of claim 15, further comprising a remote facility separate from the vehicle, the remote facility configured to communicate with the vehicle to provide information used to determine the route to the destination in the navigation guidance session. ### Claim 17 (depends on 15) The system of claim 15, wherein the telematics unit is configured to continue or terminate the navigation guidance session automatically in response to determining that the park time duration is less than the pedestrian travel time or that the park time duration is at least equal to the pedestrian travel time, respectively. ### Claim 18 (depends on 15) The system of claim 15, wherein the telematics unit is configured to continue or terminate the navigation guidance session by providing a prompt to the user to continue or terminate the navigation guidance session, respectively. ### Claim 19 (depends on 15) The system of claim 15, further comprising a keyfob paired with the vehicle for starting the vehicle, wherein the telematics unit is configured to determine the user has left the vehicle when the keyfob has left a proximity of the vehicle. ### Claim 20 (depends on 15) The system of claim 15, further comprising a Bluetooth transmitter installed to the vehicle, wherein the telematics unit is configured to determine the user has left the vehicle when a Bluetooth device paired with the transmitter has become unpaired with the transmitter.