A front adapter for connecting to a control device, has a connection device connected to a predetermined system cable for connecting at least one field component, at least one wireless communication interface for wirelessly transmitting and receiving signals to or from at least one wireless one transmitting and/or receiving device which can be connected to a first field unit, and/or at least one bus-capable communication interface for transmitting and receiving signals via a signal bus to or from at least one bus-capable transmitting and/or receiving device which can be connected to a second field device, and a control and/or evaluation device which is adapted to control the transmitting of signals between the control device and the at least one wireless transmitting and/or receiving device and/or the at least one bus-capable transmitting and/or receiving device.

Methods and systems providing application layer support for one or more sleeping nodes in constrained networks are contemplated. Embodiments contemplate inserting sleep information in a header option or payload of an application layer message. The application layer message may be conveyed in a hypertext transfer protocol (HTTP) or a constrained application protocol (CoAP). Embodiments contemplate communicating the application layer message to a server, which may serve as a caching and/or buffering proxy.

The invention relates to devices, methods, and computer program products for secure data communication according to a network protocol having a plurality of communication layers layered into a protocol stack. Said device comprises a processor system, in which a processor, controlled by a task scheduler, executes a plurality of autonomous software modules, which each run a communication layer of the protocol stack. The software modules are linked via communication channels to the protocol stack and the protocol stack is connected to an interface framework for data communication with an external network. At least one software module uses an assigned cryptographic key for secure data communication in its communication layer. The task scheduler is configured to obtain said key from the external network via the interface framework and to distribute said key to the assigned software module.

A controller acquires communication destination information including at least a first external apparatus connected via a first communication interface or a second external apparatus connected via a second communication interface. The controller performs initialization of the first communication interface and the second communication interface. The initialization includes: in response to determining that an external apparatus indicated by the communication destination information is the first external apparatus, after completing initialization of the first communication interface, shifting to a communication waiting state in which transmission and reception of data is acceptable; and in response to determining that the external apparatus indicated by the communication destination information is the second external apparatus, shifting to the communication waiting state after completing initialization of the second communication interface. The controller performs communication with at least the first external apparatus or the second external apparatus. The communication includes transmission and reception of the data.

A system and/or method can include power of Ethernet (PoE) controller including a PoE interface, a device interface and a controller, communicatively coupled to the PoE interface and the device interface. The controller can be configured to receive device control information via the PoE interface and to generate control instructions in response to the device control information for the device interface.

A system and/or method can include power of Ethernet (PoE) controller including a PoE interface, a device interface and a controller, communicatively coupled to the PoE interface and the device interface. The controller can be configured to receive device control information via the PoE interface and to generate control instructions in response to the device control information for the device interface.

A packet is transmitted from a remote device over a communication network. A fragment detector detects one or more fragments in a field of the packet, where the field is associated with a session layer or higher abstraction layer of an open systems interconnect (OSI) model. Fragment information is extracted from the packet which indicates one or more of a last fragment index associated with a last fragment of one or more fragment in the packet and a fragment count indicative of a number of fragments associated with a message which is fragmented. Interrupts associated with the packet with other interrupts associated with other packets are coalesced based on one or more of the last fragment index and the fragment count.

Disclosed is a communication method, wherein: protocol entity configuration information is received from a network entity; if an SDU the transmission of which has been requested by an application is received, a first protocol entity creates a first protocol PDU according to the protocol entity configuration information, without concatenation or segmentation of the SDU; a second protocol entity creates a second protocol PDU on the basis of the first protocol PDU; and a third protocol entity transmits the second protocol PDU to the network entity.

In one embodiment, a method according to the present disclosure includes receiving a topology change message at a core edge node and performing a network address information removal operation. The core edge node participates in network communications with one or more access network nodes of an access network using an access network protocol. The topology change message indicates that a topology change has occurred in the access network, and the topology change message conforms to the access network protocol. The network address information removal operation removes network address information stored by the core edge node, and the network address information is used by the core edge node in participating in the network communications.

Apparatus and methods are provided for ameliorating distortion issues associated with a conductor that passes over a void in a reference plane. In an example, the signal conductor can include a first part routed over the major surface of a first side of the reference plane structure on a first side of the void and that approaches a first edge of the reference plane structure with a first trajectory, a second part routed over the major surface of the reference plane structure on a second side of the void and that approaches a second edge of the reference plane structure with a second trajectory, and a third portion connecting the first portion with the second portion, the third portion spanning the void, and having a plurality of spurs extending from a body of the third portion.