Patent · US Expired

Beam forming method

US7099630B2 · kind B2 · utility

75Cited by

9References

29Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Christopher Brunner · Sunnyvale, US
Bernhard Raaf · Hersbruck, DE
Alexander Seeger · Straubing, DE

Key dates

Filing date	Jun 29, 2001
Grant date	Aug 29, 2006
Priority date	—
Expiry date	Jan 22, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH04B7/0617
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A radio communications system has subscriber stations and a base station that is provided with an antenna system with a plurality of antenna elements that emit a downlink signal in a weighted manner with coefficients of a weighting vector. In order to form a beam, a plurality of weighting vectors is determined at the subscriber station and the determined weighting vectors are transmitted to the base station. In a subsequent working phase, the subscriber station selects a dominant vector among the determined weighting vectors and transmits an indicator of the selected weighting vector to the base station.

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