Disclosed are a vehicle diagnostic communication apparatus, a system including the same and a method thereof. The vehicle diagnostic communication apparatus may include a processor configured to automatically calculate a diagnostic time based on an controller-specific response time and vehicle network information when communicating with a vehicle, and storage configured to store the controller-specific response time and the vehicle network information.

Various systems and methods for bus-off attack detection are described herein. An electronic device for bus-off attack detection and prevention includes bus-off prevention circuitry coupled to a protected node on a bus, the bus-off prevention circuitry to: detect a transmitted message from the protected node to the bus; detect a bit mismatch of the transmitted message on the bus; suspend further transmissions from the protected node while the bus is analyzed; determine whether the bit mismatch represents a bus fault or an active attack against the protected node; and signal the protected node indicating whether a fault has occurred.

An equipment management system includes an adaptive system control unit which is assigned to at least one piece of equipment installed in a plant and which monitors and controls the equipment via wireless communication. The adaptive system control unit includes an information detection unit for detecting information from the equipment, a detected information control unit for guaranteeing that only acquisition intended information previously intended to be acquired in the information detected by the information detection unit is acquired by the adaptive system control unit, a first data propagation adjustment unit for adjusting a propagation path when transmitting data including information controlled by the detected information control unit to the outside, and an equipment control unit for controlling the equipment on the basis of the information detected by the information detection unit or a control policy from the outside.

Ethernet link extension methods and devices provide, in one illustrative embodiment, an Ethernet link extender with physical medium attachment (PMA) circuits each having a transmitter and receiver that communicate with a respective node in a sequence of communication phases. The sequence includes at least an auto-negotiation phase and a subsequent training phase, the phases occurring simultaneously for both PMA circuits. In the auto-negotiation phase, the PMA circuits operate in a pass-through mode, rendering the extender transparent to the two nodes. In the training phase, the PMA circuits operate independently, sending training frames to their respective nodes based in part on received back-channel information and locally-determined training status information. The training phases may be prolonged if needed to provide a simultaneous transition to a frame-forwarding phase of the sequence.

A network node for coupling to a communication bus, the node comprising: a receiver configured to receive messages from the communication bus; and a transmitter configured to transmit first messages having a first message format and configured to transmit diagnosis messages having a second message format on the communication bus for use in determination of communication errors, wherein said transmitter is configured to send said one or more diagnosis messages having one or more of: (i) a predetermined pattern of symbols; (ii) a predetermined sending schedule; (iii) a predetermined line encoding method; (iv) a predetermined bit rate; (v) a predetermined position in one or more of the first messages; (vi) a predetermined signalling frequency that is out of a frequency band used for transmission of the first messages; and (vii) a predetermined signal strength different from the signal strength used to send the first messages.

Embodiments of a device and method are disclosed. In an embodiment, a method of communications involves operating an Ethernet media access control (MAC) unit according to a rate specified in an IEEE 802.3 standard and adapting to transmit data to or from the Ethernet MAC unit at an effective data communications rate on a physical media, where the effective data communications rate is different from the rate specified by the IEEE 802.3 standard.

A CAN communication protocol system for exchanging fuel consumption-optimizing and/or operating fluid consumption-optimizing and noise-optimizing messages between drive components and output components, which also help to increase the overall availability of the system, and method. Described is also a CAN communication protocol system for an internal combustion engine for exchanging fuel consumption-optimizing and/or operating fluid consumption-optimizing and noise-optimizing messages between drive components and output components, which also help to increase the overall availability of the system.

Embodiments of the invention include a vehicle telematics device that performs vehicle CAN bus discovery using bit timing analysis. In an embodiment, the vehicle telematics device enters a vehicle CAN bus protocol discovery mode, samples a vehicle CAN bus signal, performs bit timing analysis of the CAN bus signal, calculates a BAUD rate of the vehicle CAN bus based on the bit timing analysis, determines a data packet format of data packets on the vehicle CAN bus, and identifies a vehicle CAN bus protocol from a plurality of vehicle CAN bus protocols based on the calculated BAUD rate and data packet format.

A communication system includes a medium access control circuit and at least one physical layer circuit. The at least one physical layer circuit is coupled to the medium access control circuit. The medium access control circuit sends a control command to the at least one physical layer circuit via a SERDES interface. In response to the control command, the at least one physical layer circuit sends physical layer data to the medium access control circuit via the SERDES interface.

Embodiments described herein provided methods and apparatus for controlling switching a power supply of a first network node between an electrical power grid and an alternative power supply, in which the first network node is configured to transmit data to a second network node over a data transmission link. The method includes receiving first information indicative of a predicted decrease in a transmission rate of data transmitted by the first network node over the data transmission link. Responsive to receiving the first information, a first request is transmitted to the first network node to switch the power supply of the first network node from the electrical power grid to the alternative power supply.