发明名称 |
METHOD FOR OPERATING A SYSTEM COMPRISING A PLURALITY OF NODES AND A BASE STATION ACCORDING TO TDMA, AND ASSOCIATED SYSTEM |
摘要 |
Disclosed is a method for operating a system according to time division multiple access (TDMA), comprising a plurality 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 an installation, such as an industrial robot, automatic production or fabrication machine. Cyclical TDMA data transmission blocks are transmitted, each TDMA data transmission block being composed of successive time slots, each of which is assigned to a specific node. The uplink signals (UL.1 ... UL.n) from the different nodes (S.1 ... S.n) to the base station (BS) can be simultaneously transmitted on two, three or more different frequencies (f1, f2, f3) while the downlink signals (DL) from the base station (BSA) to the different nodes (S.1 ... S.n) are transmitted on a single frequency that is different from the uplink frequencies. The time slots and the different uplink frequencies are defined once and are subsequently maintained. |
申请公布号 |
WO2004023419(A3) |
申请公布日期 |
2004.05.27 |
申请号 |
WO2003EP08691 |
申请日期 |
2003.08.06 |
申请人 |
ABB RESEARCH LTD.;APNESETH, CHRISTOFFER;VEFLING, HARALD;ENDRESEN, JAN;DZUNG, DACFEY |
发明人 |
APNESETH, CHRISTOFFER;VEFLING, HARALD;ENDRESEN, JAN;DZUNG, DACFEY |
分类号 |
G05B19/414;H04J4/00 |
主分类号 |
G05B19/414 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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