The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2008
Filed:
Aug. 06, 2003
Christoffer Apneseth, Oslo, NO;
Harald Vefling, Borgheim, NO;
Jan Endresen, Asker, NO;
Dacfey Dzung, Wettingen, CH;
Christoffer Apneseth, Oslo, NO;
Harald Vefling, Borgheim, NO;
Jan Endresen, Asker, NO;
Dacfey Dzung, Wettingen, CH;
ABB Research Ltd, Zurich, CH;
Abstract
A method is proposed for operating a system according to TDMA (Time Division Multiple Access) with a multiplicity of wireless sensors and/or actuators as nodes (S.. . . S.n) and a base station (BS), said system being installed in a machine or installation, such as industrial robots or an automated manufacturing or production unit, whereby cyclical TDMA data transmission blocks are transmitted and each TDMA data transmission block is composed of consecutive time slots. Each time slot is allocated to a specific node. The uplink signals (UL.. . . UL.n) can be transmitted from the different nodes (S.. . . S.n) to the base station (BS) simultaneously on two, three or more different frequencies (fff) whereas the. downlink signals (DL) are transmitted from the base station (BSA) to the different nodes (S.. . . S.n) on only one frequency, which differs from the uplink frequencies. The time slots and the different uplink frequencies of the different nodes are defined once and are thereafter retained.