Abstract: A method and a network system for communicating confidential measured data between a plurality of decentralized, measured data-generating producers and a consumer in an automation network is provided. The following is carried out on the part of the producers: measuring or providing measured data from a plurality of sensors and classifying the measured data into security levels; checking a reliability of consumer-generated processing instructions depending on the respective classified security level; and in the case of a positive check, processing the measured data on the basis of the processing instructions, proven to be reliable, to generate an analysis result data set; and transmitting the analysis result data set to the consumer.

Abstract: A method and a network system for communicating confidential measured data between a plurality of decentralized, measured data-generating producers and a consumer in an automation network is provided. The following is carried out on the part of the producers: measuring or providing measured data from a plurality of sensors and classifying the measured data into security levels; checking a reliability of consumer-generated processing instructions depending on the respective classified security level; and in the case of a positive check, processing the measured data on the basis of the processing instructions, proven to be reliable, to generate an analysis result data set; and transmitting the analysis result data set to the consumer.

Abstract: The Specific service instances are requested by a client via a client application. The request is received by a Domain Name System (DNS). The request is resolved by the DNS by determining from information recorded in a DNS system memory and conveyed in the request, a first type T1 of service and a first list L1 of service instances associated with the first type T1. The DNS then searches for a linked structure in a TXT resource record for the first type T1. The linked structure identifies another list L2 of service instances associated with a subtype T2 of service. Then iteratively, for i=2, . . . , N+1, N being a number of the subtypes of service associated with the first type T1 of service, searching a TXT resource record for a linked structure identifying a corresponding subtype Ti of service and identifying a list Li+1 of service instances associated with the subtype Ti+1.

Abstract: A method for transmitting a beacon for a star network in manufacturing automation, for use in a communications protocol, such as IEEE Standard 802.15.4e, for manufacturing automation, using at least one gateway and at least one sensor node, wherein the beacon comprises a field including information about a number of base time slots in a superframe.

Abstract: A method for data transmission in a local area network, wherein data is transmitted on a medium access control layer within successive time frames between a plurality of first nodes comprising client nodes and a second node within reach of the first nodes, and a coordinator node for the first nodes where a time frame comprises a plurality of time slots. Each time slot is assigned to a first node that is a slot owner node being exclusively allowed to start transmitting data at a time within a first interval at the beginning of the time slot. At least one first nodes of the plurality of first nodes is allowed to use the time slot based on a contention based access to transmit the data in a second interval succeeding the first interval where the slot owner node has not started transmitting data at a time within the first interval.

Abstract: Route discovery of a route from a source node of an IEEE 802 connection to a destination node of an IEEE 802 connection, including a mesh network path with a source node of the mesh path and a destination node of the mesh path, is initiated by an extended route request message generated by the destination node. The extended route request message includes a flag that indicates whether the source node of the IEEE 802 connection is located inside or outside the mesh network, and either one source address of the source node, if the node is inside the mesh network, or two source addresses covering (a) the source address of the source node of the mesh path and (b) the source address of the source node of the IEEE 802 connection, if the node is outside the mesh network.

Abstract: The Specific service instances are requested by a client via a client application. The request is received by a Domain Name System (DNS). The request is resolved by the DNS by determining from information recorded in a DNS system memory and conveyed in the request, a first type T1 of service and a first list L1 of service instances associated with the first type T1. The DNS then searches for a linked structure in a TXT resource record for the first type T1. The linked structure identifies another list L2 of service instances associated with a subtype T2 of service. Then iteratively, for i=2, . . . , N+1, N being the subtypes of service associated with the first type T1 of service, searching a TXT resource record for a linked structure identifying a corresponding subtype Ti of service and identifying a list Li+1 of service instances associated with the subtype Ti+1.

Abstract: A method for data transmission in a local are network, wherein data is transmitted on the Media Access Control (MAC) layer within successive time frames between a plurality of first nodes comprising client nodes to a second node comprising a coordinator node for the plurality of first nodes. A synchronizing slot for sending a synchronizing message from the second node to the first nodes includes acknowledgements for time slots used for data transmissions in previous time frames from the first nodes to the second node. The acknowledgements indicate whether a data transmission in the previous time frame was successful. Based on these acknowledgements, retransmission time slots included in the current time frame are used for retransmitting data that have not been transmitted successfully in a time slot of the previous time frame.

Abstract: A method for transmitting a beacon for a star network in manufacturing automation, for use in a communications protocol, such as IEEE Standard 802.15.4e, for manufacturing automation, using at least one gateway and at least one sensor node, wherein the beacon comprises a field including information about a number of base time slots in a superframe.

Abstract: A method for establishing a bidirectional communication path in a wireless network, where the network includes nodes comprising a sink node and a plurality of subscriber nodes, and where the communication path for the bidirectional transmission of data packets is to be established between the sink node and at least one queried node of the subscriber nodes. An uplink path from a particular subscriber node to the sink node is determined by periodically exchanging path messages between adjacent nodes of the network, where a particular path message signals the respectively shortest distance to the sink node, i.e., as a metric. A downlink path from the sink node to the at least one queried node is determined by inserting an address list into at least one of the path messages sent by the sink node, which list comprises the address of a respectively queried node.

Abstract: A beacon for a star network comprising a gateway and at least one sensor node, where the beacon includes fields containing information on the length of a base time-slot and information on the number of used base time-slots per management time-slot, where the management time-slots are used at least to transmit configurations for the star network. In addition, the sensor node in the star network includes a data structure for saving a star network configuration, and the data structure includes a configuration gateway ID and a configuration sequence number as attributes.

Abstract: A method for data transmission in a local area network, wherein data is transmitted on a medium access control layer within successive time frames between a plurality of first nodes comprising client nodes and a second node within reach of the first nodes, and a coordinator node for the first nodes where a time frame comprises a plurality of time slots. Each time slot is assigned to a first node that is a slot owner node being exclusively allowed to start transmitting data at a time within a first interval at the beginning of the time slot. At least one first nodes of the plurality of first nodes is allowed to use the time slot based on a contention based access to transmit the data in a second interval succeeding the first interval where the slot owner node has not started transmitting data at a time within the first interval.

Abstract: A method for data transmission in a local are network, wherein data is transmitted on the Media Access Control (MAC) layer within successive time frames between a plurality of first nodes comprising client nodes to a second node comprising a coordinator node for the plurality of first nodes. A synchronizing slot for sending a synchronizing message from the second node to the first nodes includes acknowledgements for time slots used for data transmissions in previous time frames from the first nodes to the second node. The acknowledgements indicate whether a data transmission in the previous time frame was successful. Based on these acknowledgements, retransmission time slots included in the current time frame are used for retransmitting data that have not been transmitted successfully in a time slot of the previous time frame.

Abstract: In a method for operating a wireless sensor network (1) with a plurality of sensor nodes (2-4), which are suitably set up to transmit data by nondirectional radio transmission, a selected set containing at least one sensor node (2) can be selectively moved from a first operating state into a second operating state by a spatially delimited first operating state control signal (17), with the sensor node (2-4) in the first operating state not being able to receive control data by nondirectional radio transmission and in the second operating state, being able to receive and process control data by nondirectional radio transmission. Furthermore, a sensor node can be suitably configured to implement the method.

Abstract: Using at least one network consisting of at least one node, a multi-hop communication system is formed in which data are received and forwarded from a transmitting first node to a second node receiving the data via at least one third node interposed between the first and the second node. For transmission, the data are subdivided into packets that have a useful data portion (payload) and at least one first control data portion associated with the multi-hop method and a second control data portion associated with the network. The data are encrypted using a first public key determined by the first node and the second node, but only the useful data portion is encrypted using the first public key.

Abstract: Route discovery of a route from a source node of an IEEE 802 connection to a destination node of an IEEE 802 connection, including a mesh network path with a source node of the mesh path and a destination node of the mesh path, is initiated by an extended route request message generated by the destination node. The extended route request message includes a flag that indicates whether the source node of the IEEE 802 connection is located inside or outside the mesh network, and either one source address of the source node, if the node is inside the mesh network, or two source addresses covering (a) the source address of the source node of the mesh path and (b) the source address of the source node of the IEEE 802 connection, if the node is outside the mesh network.

Abstract: In a multi-hop network, packets are classified into header and user data for coded distribution. The header information, especially the multi-hop information, is separated in a coded manner from the user data, such that each network node need only decode the header in order to forward the packet. The header and the user data are guided, independently from each other, to the hardware of the respective device for separate coding, as if they were complete packets. A hardware accelerated coding of header and user data is possible using different keys. The header also contains integrity protection.