US 12,292,295 B2
Route planning and navigation method and apparatus
Bo Li, Beijing (CN); Fan Yang, Beijing (CN); Song Zhang, Beijing (CN); and Ming Zhao, Beijing (CN)
Assigned to AMAP SOFTWARE CO., LTD., Beijing (CN)
Filed by Amap Software Co., Ltd., Beijing (CN)
Filed on Sep. 19, 2022, as Appl. No. 17/947,615.
Claims priority of application No. 202111134530.1 (CN), filed on Sep. 27, 2021.
Prior Publication US 2023/0095669 A1, Mar. 30, 2023
Int. Cl. H04W 4/024 (2018.01); G01C 21/34 (2006.01)
CPC G01C 21/3461 (2013.01) [H04W 4/024 (2018.02)] 16 Claims
OG exemplary drawing
 
1. A route planning method implemented by a computer system, comprising:
obtaining request failure information in response to detecting a route planning request failure event;
extracting, from the request failure information, a road identifier and a failure event occurrence time;
determining, by using the road identifier as an index, a quantity of first objects passing through the road corresponding to the road identifier in a preset historical time period;
determining, based on the failure event occurrence time, a quantity of second objects passing through the road and sending the request failure log in the preset historical time period;
determining a network communication evaluation value and/or a network positioning evaluation value of the road according to a ratio of the quantity of the first objects to the quantity of the second objects; and
marking, based on the network communication evaluation value and/or network positioning evaluation value, the road as a signal blind area where communication or positioning signals are not present, too weak, or unreliable due to network issues.