Patent · US Expired

Positional determination of a user in a mobile communications system with emission diversity

US7136660B2 · kind B2 · utility

2Cited by

8References

15Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Michael Farber · Wolfratshausen, DE
Jurgen Hofmann · Spalt, DE
Karel Sotek · Munich, DE

Key dates

Filing date	Jun 20, 2003
Grant date	Nov 14, 2006
Priority date	—
Expiry date	Jun 20, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH04W64/00
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

The invention relates to a method for increasing the precision during the determination of system parameters dependent on the propagation delay, e.g. for a positional determination, in a mobile communications system with emission diversity, according to which a subscriber data signal and a reference signal are assigned to a subscriber. The subscriber data signal is emitted by at least two antenna devices on the emission side, whereas the reference signal is emitted exclusively by one antenna device on the emission side. The reference signal is used to precisely determine signal propagation delays, upon which the system parameters depend.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.