公开(公告)号：JP2003087849A

公开(公告)日：2003-03-20

申请号：JP2002147973

申请日：2002-05-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BUDKA KENNETH C ,  CALIN DORU ,  JESKE DANIEL R ,  RICHTON ROBERT ELLIS

IPC: G01S5/02 ,  G01S19/06 ,  G01S19/09 ,  G01S19/42 ,  G01S19/46 ,  H04B7/155 ,  H04W24/00 ,  H04Q7/34 ,  G01S5/14

Abstract: PROBLEM TO BE SOLVED: To provide a wireless global positioning system that can decide a position of a wireless mobile communication device without GPS capability without disturbing reception of a satellite signal. SOLUTION: The wireless positioning system determines the location of a wireless mobile communication device from reliable position measurements and wireless network downlink measurements. The wireless network downlink measurements obtained are then used in conjunction with a database for pattern matching or contour matching. The difficulty of building and maintaining that database is alleviated by using those network downlink measurements associated with the reliable position measurements to populate the database, such as GPS measurements or those obtained through enhanced based positioning technique (EOTD). The increased database accuracy subsequently improves the quality of position location measurements from the wireless network.