Method and apparatus for energy-optimized data transmission using the OPC UA protocol in radio networks
First Claim
1. A method of providing unscheduled fault notifications to a mobile client device from a server in an industrial client/server system, in addition to the fault notifications the server provides to industrial client devices, using fault notification information that identifies the fault notification that the mobile client device must request from the server, said industrial client/server system using an industrial monitoring protocol wherein industrial client devices continually send keep alive messages to the server that are required to enable the industrial client devices to receive unscheduled fault notifications from the server, said method supporting industrial maintenance by promptly and reliably providing fault notifications to the mobile client devices that are adapted to use at least one network external to the industrial client/server system and do not send said keep alive messages to the server, said method comprising the steps of:
- transmitting a trigger message providing notification information to the mobile client device, transmission of said trigger message being initiated by an extension of the industrial protocol used by the server when the server has a fault notification to provide to the mobile client, andinitiating the transmission of a request by the mobile client to the server in response to the trigger message initiated by the server, using the notification information in the trigger message transmitted to the mobile client and an extension of the industrial monitoring protocol that is used by the industrial client, whereby unscheduled fault notifications provided by the industrial monitoring protocol are provided promptly and reliably to mobile devices in accordance with the server'"'"'s extended industrial monitoring protocol.
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Abstract
A method and apparatus for energy-optimized data transmission by OPC UA protocol in radio networks is disclosed. When OPC UA communication is operated in a mobile device, e.g. as mobile access to part of a plant for maintenance, monitoring, parameterization, transmission is frequently implemented by the OPC UA'"'"'s own request-response based communication behavior. Since the device is rarely able to switch off the transmitter, the battery of the device is very quickly discharged. This poses a problem, particularly in the case of devices that are intended to respond promptly to infrequent warnings or events. However, when a client device is intended to provide notification in relation to one event only, the previous polling, i.e. the periodic interrogation is dispensed with and an alternative notification through means inherent in the mobile network is used. This method uses, for example, a mobile push service supplied by the network provider.
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Citations
20 Claims
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1. A method of providing unscheduled fault notifications to a mobile client device from a server in an industrial client/server system, in addition to the fault notifications the server provides to industrial client devices, using fault notification information that identifies the fault notification that the mobile client device must request from the server, said industrial client/server system using an industrial monitoring protocol wherein industrial client devices continually send keep alive messages to the server that are required to enable the industrial client devices to receive unscheduled fault notifications from the server, said method supporting industrial maintenance by promptly and reliably providing fault notifications to the mobile client devices that are adapted to use at least one network external to the industrial client/server system and do not send said keep alive messages to the server, said method comprising the steps of:
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transmitting a trigger message providing notification information to the mobile client device, transmission of said trigger message being initiated by an extension of the industrial protocol used by the server when the server has a fault notification to provide to the mobile client, and initiating the transmission of a request by the mobile client to the server in response to the trigger message initiated by the server, using the notification information in the trigger message transmitted to the mobile client and an extension of the industrial monitoring protocol that is used by the industrial client, whereby unscheduled fault notifications provided by the industrial monitoring protocol are provided promptly and reliably to mobile devices in accordance with the server'"'"'s extended industrial monitoring protocol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. Network apparatus adapted to transmit unscheduled fault notifications to mobile client devices from a server device in an industrial client/server system, in addition to the fault notifications the server provides to industrial client devices, using fault notification information that identifies the fault notification that the mobile client device must request from the server, said industrial client/server system using an industrial monitoring protocol wherein industrial client devices receive unscheduled fault notifications from the server by continually sending keep alive messages to the server that are required to enable the industrial client devices to receive unscheduled fault notifications from the server, said network apparatus further supporting industrial maintenance by promptly and reliably providing fault notification information identifying the fault notification that must request from the server to mobile client devices, said mobile client devices using at least one network external to the industrial client/server system and not sending keep alive messages to the server, said network apparatus comprising;
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a trigger transmitter, said trigger transmitter being adapted to transmit a trigger message to a mobile client device, said trigger message providing fault notification information to the mobile client device when the server has a fault notification to transmit to the mobile client device; and a protocol extension of the industrial monitoring protocol in the communication protocol stack in the memory of the server, said protocol extension initiating transmission of the trigger message by the trigger transmitter, said trigger message providing notification information to said mobile client device when the server has a fault notification to transmit to the mobile client device, whereby the unscheduled fault notifications of the industrial monitoring protocol are provided promptly and reliably to mobile client devices as well as to the industrial client devices, without the mobile client device continually sending keep alive messages to the server in accordance with the industrial monitoring protocol. - View Dependent Claims (16, 17)
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18. A mobile client device adapted to obtain unscheduled fault notifications from a server device in an industrial client/server system, in addition to the fault notifications the server provides to industrial client devices, using fault notification information that identifies the fault notification that the mobile client device must request from the server, said industrial client/server system using an industrial monitoring protocol wherein industrial client devices continually send keep alive messages to the server that are required to enable the industrial client devices to receive unscheduled fault notifications from the server, said mobile client device further supporting industrial maintenance by also promptly and reliably providing the fault notifications provided by the industrial client devices, said mobile client devices using at least one network external to the client/server system and not sending keep alive messages to the server, said mobile client device comprising:
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a trigger receiver in the mobile client device adapted to receive a trigger message transmitted by the server, said trigger message providing fault notification information to the mobile client device when the server has a fault notification to transmit to the mobile client device; and a protocol extension of the industrial monitoring protocol in the protocol stack in the memory of the mobile client device, said extension of the industrial monitoring protocol initiating transmission of a data request by the mobile client device to the server in response to the notification information in the trigger message received by the mobile client device, whereby the unscheduled fault notifications provided to the industrial client devices by the industrial monitoring protocol are also provided promptly and reliably to mobile client devices, in accordance with the extended industrial monitoring protocol in the protocol stack in the memory of the mobile client device. - View Dependent Claims (19, 20)
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Specification