公开(公告)号：US20240045073A1

公开(公告)日：2024-02-08

申请号：US17817571

申请日：2022-08-04

Applicant: QUALCOMM Incorporated

Inventor： Danlu ZHANG ,  Kevin DAO ,  Arnold Jason GUM ,  Bala RAMASAMY ,  Kuirong WANG ,  Damir DIDJUSTO

IPC: G01S19/07 ,  H04W4/02 ,  H04W4/029

CPC classification number: G01S19/07 ,  H04W4/025 ,  H04W4/029

Abstract: Aspects presented herein may enhance the navigation function of navigation/map applications or systems when GNSS signals are weak or sporadic. In one aspect, a UE monitors a position of the UE based on GNSS communication, where the position of the UE is monitored using at least one first map layer of a plurality of map layers associated with a map. The UE detects that the position of the UE corresponds to a predefined location when the GNSS communication is below a communication threshold. The UE switches to monitoring the position of the UE using at least one second map layer of the plurality of map layers upon detecting that the position of the UE corresponds to the predefined location, where the at least one second map layer is associated with the predefined location.