A system for virtualizing a plurality of controller area network bus units includes a plurality of physical controller area network buses communicatively connected to an aircraft, each configured to detect a measured state datum of a plurality of measured state data of the aircraft, a plurality of controller area network gateways communicatively connected to the plurality of physical controller area network buses, wherein the plurality of controller area network gateways are configured to transmit the plurality of measured state data, at least a network switch communicatively connected to the plurality of controller area network gateways configured to receive the transmitted measured state data, and transmit the measured state data via a single transmission signal, and at least a virtual controller area network bus unit configured to receive the single transmission signal originating from the at least a network switch and bridge a plurality of virtual controller area network bus units.

An abnormality in an on-vehicle network is accurately detected through a simple process. A detection device is configured to detect an abnormality in an on-vehicle network including a plurality of on-vehicle devices, and includes: a monitoring unit configured to monitor transmission messages in the on-vehicle network, and acquire a communication load in the on-vehicle network; an acquisition unit configured to acquire a history of a communication load in an on-vehicle network to which the detection device belongs, or another on-vehicle network; and a detection unit configured to detect an abnormality in the on-vehicle network, based on the history acquired by the acquisition unit and on the communication load acquired by the monitoring unit at a first timing after the history.

A switch device installed in a vehicle is provided with: a switch unit configured to relay communication data between a plurality of function units installed in the vehicle; a storage unit configured to hold the communication data to be relayed; and a control unit configured to determine a state of the storage unit, and adjust, for each of applications, a throughput of the communication data to be transmitted from the function units, based on a result of the determination.

In some examples, a transport agnostic source includes a streaming device to stream video on diverse transport topologies including isochronous and non-isochronous transports. In some examples, a transport agnostic sink includes a receiving device to receive streamed video from diverse transport topologies including isochronous and non-isochronous transports.

In some examples, a transport agnostic source includes a streaming device to stream video on diverse transport topologies including isochronous and non-isochronous transports. In some examples, a transport agnostic sink includes a receiving device to receive streamed video from diverse transport topologies including isochronous and non-isochronous transports.

A switch device installed in a vehicle is provided with: a switch unit configured to relay communication data between a plurality of function units installed in the vehicle; a storage unit configured to hold the communication data to be relayed; and a control unit configured to determine a state of the storage unit, and adjust, for each of applications, a throughput of the communication data to be transmitted from the function units, based on a result of the determination.

A system and method is provided for qualitative analysis of baseband building automation networks. The system may include a processor configured to carry out a plurality of tests on a serial communication network that includes at least one field device that carries out building automation communications on the network. A first test may include: transmitting a series of queries for devices on the network, in which the queries are transmitted at incrementally lower transmission signal levels until message loss is detected; and determining a first lower signal level at which transmissions of queries occur without message loss on the network. In addition, the processor may be configured to determine and output on a display device at least one classification of the relative quality of the network with respect to at least one predetermined scale of relative network quality based at least in part on the first lower signal level.

A communicating entities include one master entity, configured for communicating according to a first protocol at least, and a plurality of slave entities. The slave entities include a first group of slave entities able to support communications according to said first protocol and unable to support communications according to a second protocol, and a second group of slave entities able to support communications according to at least said second protocol. The first protocol is implemented by a token passing with communication data from the master entity to successively each neighbour slave entity, until the token reaches again the master entity, defining thus a first cycle according to the first protocol. The second protocol is implemented by passing a data frame including data intended to entities of said second group, one current entity of said second group, when receiving said data frame.

The invention relates to an arrangement and a method performing data exchange between various integrated circuits, IC, (3,4,5,6,7) in an automotive control system wherein the data are exchanged by a bus and has the object to enable ASIL C/D system coverage and to tie various ICs (clocks, regulators, memory interfaces, sensor signal conditioners, power management ICs etc.) This is solved the data are exchanged by a bus being ASIL C/D compliant and forming a common protocol to exchange information among the integrated circuits (3,4,5,6,7). The method is solved by functions implemented within the bus as setting the frequency of operation; arbitrating roles of the integrated circuits as master or slave device; checking integrity of exchanged data; frame repetition; detecting bus stuck-at failure modes; filtering or denouncing failures and warnings from peripheral devices; detecting remote out of specification local clock; and monitoring and predicting system reliability and profiling maintenance events.

A method for operating a first network device of a communications network, wherein the method comprises: determining or receiving, by means of an ingress interface, an ingress data stream comprising payload data to be transmitted towards a second network device; determining or receiving, by means of a correlation observer, at least one correlation value for a plurality of communication paths between the first network device and the second network device, wherein each of the plurality of communication paths comprises a different one of a plurality of physical channels; determining, by means of a multi-connectivity controller, a plurality of egress data streams in dependence on the at least one correlation value and in dependence on the ingress data stream; and transmitting, via a respective one of a plurality of egress queues, wherein each egress data stream is associated with a different one of the plurality of paths.