Patent · US Expired

Adaptive sectorization

US6470177B1 · kind B1 · utility

13Cited by

6References

16Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Soren Andersson · Sollentuna, SE
Henrik Dam · Copenhagen, DK
Magnus Berg · Stockholm, SE
Marc Frerich · Oelde, DE
Felix Ahrens · Reinheim, DE
Rainer Bormann · Velbert, DE

Key dates

Filing date	Apr 14, 2000
Grant date	Oct 22, 2002
Priority date	—
Expiry date	Apr 14, 2020

Classification

Technology area (CPC H)Electricity
CPC primaryH04W48/12
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

The present invention relates generally to the problems associated with sectorization of cells in cellular communications systems, and more particularly to interference between sectors. The invention provides the possibility of flexibly distributing hardware between sectors in a cell by allowing one transmitter to be shared by all the sectors. Since a beacon signal must be transmitted to each sector in a cell, it can be combined with the signal from the transmitter before being transmitted from an antenna. Thus it is necessary to only deploy one carrier for the beacon. Interference reduction in sectored sites is also improved. In addition, different antenna patterns may be combined to provide the site with all kinds of coverage patterns. Downlink diversity is furthermore attainable by having overlapping uncorrelated antenna patterns.

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