公开(公告)号：CA2447914A1

公开(公告)日：2002-12-05

申请号：CA2447914

申请日：2001-05-26

Applicant: QUALCOMM INC

Inventor： KRASNER NORMAN F ,  JOLLEY EDWARD V

IPC: H04L7/00 ,  H04B7/26 ,  H04Q7/34 ,  H04Q7/30

Abstract: Methods and apparatuses for synchronozing basestations in a cellular network . One exemplary method performs time synchronization between at least tow basestations, a first basestation and a second basestation, of a cellular communication system. In this exemplary method, a first time-of-day and a first geographical location of a first mobile cellular receiver station (MS) are determined from a first satellite positioning system (SPS) receiver whic h is co-located with the first MS, and the first time-of-day and first locatio n are transmitted by the first MS to a first basestation which determines a ti me- of-day of the first basestation from the first time-of-day and first locatio n and from a known location of the first basestation. Also in this exemplary method, a second time-of-day and a second geographical location of a second MS are determined from a second SPS receiver which is co-located with the secon d MS, and the second time-of-day and the second location are transmitted to a second basestation which determines a time-of-day of the second basestation from the second-time-of-day and the second location and a known location of the second basestation. Other methods and apparatuses are also described for synchronizing basestations in a cellular network.

公开(公告)号：HK1063889A1

公开(公告)日：2005-01-14

申请号：HK04106511

申请日：2004-08-30

Applicant: QUALCOMM INC

Inventor： KRASNER NORMAN F ,  JOLLEY EDWARD V

IPC: H04B20060101 ,  H04L7/00 ,  H04B7/26 ,  H04Q7/34

Abstract: Methods and apparatuses for synchronozing basestations in a cellular network. One exemplary method performs time synchronization between at least tow basestations, a first basestation and a second basestation, of a cellular communication system. In this exemplary method, a first time-of-day and a first geographical location of a first mobile cellular receiver station (MS) are determined from a first satellite positioning system (SPS) receiver which is co-located with the first MS, and the first time-of-day and first location are transmitted by the first MS to a first basestation which determines a time-of-day of the first basestation from the first time-of-day and first location and from a known location of the first basestation. Also in this exemplary method, a second time-of-day and a second geographical location of a second MS are determined from a second SPS receiver which is co-located with the second MS, and the second time-of-day and the second location are transmitted to a second basestation which determines a time-of-day of the second basestation from the second-time-of-day and the second location and a known location of the second basestation. Other methods and apparatuses are also described for synchronizing basestations in a cellular network.