Method for operating a system with a multiplicity of nodes and a base station according to TDMA and a system for this purpose
US7450538B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2003 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Sep 9, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/33248
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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.1 . . . 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.1 . . . UL.n) can be transmitted from the different nodes (S.1 . . . S.n) to the base station (BS) simultaneously on two, three or more different frequencies (f1, f2, f3) whereas the. downlink signals (DL) are transmitted from the base station (BSA) to the different nodes (S.1 . . . 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.