Transparent handover for mobile components of an automation system
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Abstract
The invention relates to a method for transferring data between a mobile component and a controller of an automation system with a link for linking the component to the controller. The component is assigned a memory area in the memory of the controller, in which data to be transferred to the component is stored and copied into memory areas assigned to all links, so that all links provided for communication with the component have the current data available to them, and into which current data is copied by the component out of the memory area of the link in the radio cell of which the component is currently located. For a user application running on the controller of the automation system a handover of the component between different radio cells is transparent, since the application merely accesses the always up-to-date component data in the memory area assigned to the component.
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Citations
31 Claims
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1-11. -11. (canceled)
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12. A method for transferring data between a component and a controller of an automation system by a link for linking the component to the controller, comprising:
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creating a diagnostic message when the component enters and leaves a radio coverage area of the link; transferring the diagnostic message by a network protocol to the controller; determining the link in the radio coverage area by the controller based on the diagnostic messages; assigning a first memory area in a memory of the controller to the link; assigning a second memory area in the memory of the controller to the component; transferring data between the component and the controller by the link; and copying the data between the first memory area and the second memory area. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An automation system, comprising:
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a component; a controller comprising a memory with a first memory area and a second memory area; and a link comprising a communication connection to the controller and a radio interface for establishing a wireless connection to the component, wherein the first memory area is configured to be assigned to the link and the second memory area is configured to be assigned to the component, wherein the controller is configured to determine the link when the component enters and leaves a radio coverage area of the link, and wherein the link is configured to transfer data between the component and the controller and the data is copied between the first memory area and the second memory area. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification