公开(公告)号：US20180110025A1

公开(公告)日：2018-04-19

申请号：US15459540

申请日：2017-03-15

Applicant: QUALCOMM Incorporated

Inventor： Jignesh Doshi

IPC: H04W64/00 ,  H04L29/06 ,  H04W48/16

CPC classification number: H04W64/00 ,  G01S1/00 ,  H04L69/28 ,  H04W48/16

Abstract: Techniques provided herein enable a mobile device to maintain a terrestrial transceiver history indicating the success of previous measurements attempts with terrestrial transceivers for location determination. This history can be used to prioritize terrestrial transceivers with which future measurement attempts are to be made.

公开(公告)号：US09699683B1

公开(公告)日：2017-07-04

申请号：US15411483

申请日：2017-01-20

Applicant: QUALCOMM Incorporated

Inventor： Jignesh Doshi ,  Ju-Yong Do ,  Jordan Cookman ,  Guttorm Ringstad Opshaug

IPC: H04W24/00 ,  H04W24/10 ,  H04W4/02 ,  H04L25/02 ,  H04W40/24 ,  H04B17/318 ,  H04B17/309 ,  H04W36/00

CPC classification number: H04W4/02 ,  H04B7/022 ,  H04B17/309 ,  H04B17/318 ,  H04L25/0204 ,  H04L25/0226 ,  H04W36/0083 ,  H04W40/246

Abstract: Disclosed are techniques for detecting earliest arriving downlink signal peaks over all transmit diversity paths received at a same point in time. In an aspect, a wireless mobile device receives a wireless signal comprised of signals transmitted from a plurality of cells each providing a plurality of transmit diversity paths, calculates a channel energy response (CER) vector for each of the plurality of transmit diversity paths of each of the plurality of cells, constructs an overlaid CER vector for each of the plurality of cells, wherein the overlaid CER vector for a cell comprises an overlay of each CER vector of the plurality of transmit diversity paths of the cell, and determines an earliest arrival path of each of the plurality of cells based on the overlaid CER vector for that cell.