Abstract: A method for transmitting data using an Ethernet AVB transport protocol between nodes of a motor vehicle includes: reserving resources necessary for the transmission of the data by reservation messages from a dedicated protocol; setting flow of data from a node to a particular transmission rate and/or data rate; transmitting data at cyclic intervals via an Ethernet-based network by inputting the data into a transmission frame and forwarding to local transmitters; deactivating the local transmitters and receivers of a node in non-use periods, in which no data need to be transmitted; activating again the local transmitters and receivers of a node provided that data are pending transmission in a transmission frame, wherein the local transmitters and receivers are available for transmission following an activation time; and activating the local transmitters and/or receivers of the nodes based on a reservation message and a setting of the transmission rate and/or data rate.

Abstract: A method for transmitting data in a packet-oriented communications network, in particular of a motor vehicle, with a guaranteed maximum transmission time for the data packets in the communications network, and to a user terminal for carrying out said method. According to the method, before the data transmission a specific quality of service is reserved by a reservation request from the sender of the data to the receiver of the data. The reservation request including the data rate of the data stream and the latency as parameters of the requested quality of service. Once the reservation request is confirmed, the requested quality of service for the communication link between the sender and the receiver is guaranteed in the network for the data stream. In addition, the quality of service for the data stream is adjusted by the sender on the basis of the topology of the communication network and/or the resources of the communication link.

Abstract: A method for transmitting data in a motor vehicle from an application using an Ethernet transport protocol between nodes of the motor vehicle includes: the application transmitting data via an Ethernet-based network at cyclic intervals; deactivating local transmitters and receivers of a node in non-use periods, in which no data need to be transmitted; activating again the local transmitters and receivers of the node when data are pending transmission; transferring the local transmitters and receivers from an operating active mode to a quiescent mode in a deactivation time; transferring the local transmitters and receivers from the quiescent mode to the operating active mode in an activation time; and the application lowering the transmission frequency at least until a prescribed limit value is reached based at least in part on a requirement to save energy.

Abstract: A method for transmitting data in a packet-oriented communications network, in particular of a motor vehicle and to a user terminal configured for carrying out the method. In the method, data packets are transmitted without a guaranteed transmission time for the data packets and with a guaranteed maximum transmission time for the data packets in said communications network. For a data transmission with a guaranteed transmission time, a specific quality of service is reserved prior to the data transmission by reservation request from the sender of the data to the receiver of the data and the data transmission with a guaranteed transmission time is only started once a confirmation of the reservation request sent by the sender has been received. In addition, selected data that is to be transmitted in a guaranteed transmission time is sent directly as a data stream of data packets and a reservation request is sent after the start of the data stream.

Abstract: A network component has a signal processing device having a processor, at least one voltage source that can be connected to a supply network of the vehicle, and at least one coupling device connected to the signal processing device and the voltage source. Lines of at least one network segment of the vehicle network can be connected to the coupling device for the simultaneous signal connection of the network segment to the signal processing device and for the voltage supply of the network segment by the voltage source. The voltage source is configured such that a voltage ratio between at least one supply voltage provided by the voltage source and the voltage provided by the supply network can be selected from a selection of several predetermined voltage ratios.

Abstract: A method for transmitting data in a packet-oriented communications network, in particular of a motor vehicle, with a guaranteed maximum transmission time for the data packets in the communications network, and to a user terminal in the communications network. In the method, a specific quality of service as a capacity of the communication link is reserved prior to a data transmission by a reservation request from the sender of the data to the receiver of the data and the requested quality of service as a capacity of the communication link between the sender and the receiver is guaranteed in the network for the data stream by the confirmation of the reservation request, or an indication is given by a rejection that transmission is not possible. In addition, the capacity of the communications network is determined cyclically prior to a reservation request, after a rejection and/or at predefinable time intervals.

Abstract: A method and system for activating at least one temporarily inactive network component of a network system for a vehicle central network device of the network system is connected via signals to the network component by a path inside the network system extending at least partially across a network segment of the network system. The network segment connecting, via signals, the network component and a first activation device associated therewith to a switch device arranged in the path and to a second activation device associated therewith in an unbranched manner. The central network device responds to the first activation device by the switch device by sending a network function control signal.

Abstract: A method for synchronizing clocks in nodes of a vehicle network of a motor vehicle corrects a time difference between a master clock and a slave clock, taking into account transmission delay for a message between a master node and a slave node. At least for a first synchronization of the master clock to a slave clock after the nodes of the vehicle network are started up, a default transmission delay in the slave node is used to correct the time difference, and/or the slave node sending out a Delay Request message, and recording in the master node the time at which Delay Request message is received and the master node sending the time, as a Delay Response message, back to the slave node. In the slave node, the transmission delay for a message between the master node and the slave node is determined.

Abstract: A method and system for activating at least one temporarily inactive network component of a network system for a vehicle, in particular a motor vehicle. A central network device of the network system is connected via signals to the network components by a path inside the network system, the path extending at least partially across a network segment of the network system. The network segment connects via signals the network component and a first activation device associated therewith to a switch device arranged in the path and to a second activation device associated therewith in an unbranched manner. The central network device responds to the first activation device by the switch device by sending a network function control signal.

Abstract: Synchronizing data packets from an unclocked data communication network with a clocked data communication network includes: receiving clocked data packets in a gateway at clock cycles of the clocked network; packing data from the clocked data packets into first unclocked data packets for the unclocked data communication network in the gateway; providing the unclocked data packets with a time stamp, from which a clock cycle of a clocked data packet can be reconstructed; transmitting the first unclocked data packets via the unclocked network to a receiver node of the unclocked network; reading the time stamps out of the first unclocked data packets and reconstructing the clock cycle of the clocked network from the time stamps, a transmission frequency, a number of clocked data packets and/or a local clock in the receiver node; and transmitting second unclocked data packets in a clock cycle which is synchronous with the reconstructed clock cycle.

Abstract: A network component has a signal processing device having a processor, at least one voltage source that can be connected to a supply network of the vehicle, and at least one coupling device connected to the signal processing device and the voltage source. Lines of at least one network segment of the vehicle network can be connected to the coupling device for the simultaneous signal connection of the network segment to the signal processing device and for the voltage supply of the network segment by the voltage source. The voltage source is configured such that a voltage ratio between at least one supply voltage provided by the voltage source and the voltage provided by the supply network can be selected from a selection of several predetermined voltage ratios.

Abstract: A data recording device for recording communication data in a vehicle network includes a first input for receiving first communication data from a first point in the vehicle network and a second input for receiving second communication data from a second point in the vehicle network. The data recording device provides the first communication data with a first time stamp and the second communication data with a second time stamp. The first time stamp and the second time stamp are synchronized with one another.

Abstract: A method for transmitting data in a packet-oriented communications network, in particular of a motor vehicle and to a user terminal configured for carrying out the method. In the method, data packets are transmitted without a guaranteed transmission time for the data packets and with a guaranteed maximum transmission time for the data packets in said communications network. For a data transmission with a guaranteed transmission time, a specific quality of service is reserved prior to the data transmission by reservation request from the sender of the data to the receiver of the data and the data transmission with a guaranteed transmission time is only started once a confirmation of the reservation request sent by the sender has been received. In addition, selected data that is to be transmitted in a guaranteed transmission time is sent directly as a data stream of data packets and a reservation request is sent after the start of the data stream.

Abstract: A method for transmitting data in a motor vehicle from an application using an Ethernet transport protocol between nodes of the motor vehicle includes: the application transmitting data via an Ethernet-based network at cyclic intervals; deactivating local transmitters and receivers of a node in non-use periods, in which no data need to be transmitted; activating again the local transmitters and receivers of the node when data are pending transmission; transferring the local transmitters and receivers from an operating active mode to a quiescent mode in a deactivation time; transferring the local transmitters and receivers from the quiescent mode to the operating active mode in an activation time; and the application lowering the transmission frequency at least until a prescribed limit value is reached based at least in part on a requirement to save energy.

Abstract: A method for transmitting data in a packet-oriented communications network, in particular of a motor vehicle, with a guaranteed maximum transmission time for the data packets in the communications network, and to a user terminal for carrying out said method. According to the method, before the data transmission a specific quality of service is reserved by a reservation request from the sender of the data to the receiver of the data. The reservation request including the data rate of the data stream and the latency as parameters of the requested quality of service. Once the reservation request is confirmed, the requested quality of service for the communication link between the sender and the receiver is guaranteed in the network for the data stream. In addition, the quality of service for the data stream is adjusted by the sender on the basis of the topology of the communication network and/or the resources of the communication link.

Abstract: In a vehicle network in which controllers of the vehicle form nodes communicating with one another, wherein a group of the controllers to be activated is combined in a subnetwork to be activated, wherein each node has at least one network interface to an adjacent node directly addressable via the network interface, and a subnetwork manager indicating which network interface a node can use to communicate with which subnetwork, a method activating deactivated controllers includes: upon receipt of an activation command by the controllers of a subnetwork, a node identifying in the subnetwork manager which network interfaces the subnetwork manager can use to communicate with the subnetwork to be activated; the node using the identified network interfaces to transmit the activation command to adjacent nodes; and upon the transmission of the activation command, activating an adjacent node if the adjacent node was deactivated prior to transmission of the activation command.

Abstract: A method for transmitting data using an Ethernet AVB transport protocol between nodes of a motor vehicle includes: reserving resources necessary for the transmission of the data by reservation messages from a dedicated protocol; setting flow of data from a node to a particular transmission rate and/or data rate; transmitting data at cyclic intervals via an Ethernet-based network by inputting the data into a transmission frame and forwarding to local transmitters; deactivating the local transmitters and receivers of a node in non-use periods, in which no data need to be transmitted; activating again the local transmitters and receivers of a node provided that data are pending transmission in a transmission frame, wherein the local transmitters and receivers are available for transmission following an activation time; and activating the local transmitters and/or receivers of the nodes based on a reservation message and a setting of the transmission rate and/or data rate.

Abstract: A method for synchronizing clocks in nodes of a vehicle network of a motor vehicle corrects a time difference between a master clock and a slave clock, taking into account transmission delay for a message between a master node and a slave node. At least for a first synchronization of the master clock to a slave clock after the nodes of the vehicle network are started up, a default transmission delay in the slave node is used to correct the time difference, and/or the slave node sending out a Delay Request message, and recording in the master node the time at which Delay Request message is received and the master node sending the time, as a Delay Response message, back to the slave node. In the slave node, the transmission delay for a message between the master node and the slave node is determined.

Abstract: A method for transmitting data in a packet-oriented communications network, in particular of a motor vehicle, with a guaranteed maximum transmission time for the data packets in the communications network, and to a user terminal in the communications network. In the method, a specific quality of service as a capacity of the communication link is reserved prior to a data transmission by a reservation request from the sender of the data to the receiver of the data and the requested quality of service as a capacity of the communication link between the sender and the receiver is guaranteed in the network for the data stream by the confirmation of the reservation request, or an indication is given by a rejection that transmission is not possible. In addition, the capacity of the communications network is determined cyclically prior to a reservation request, after a rejection and/or at predefinable time intervals.

Abstract: A method and system for activating at least one temporarily inactive network component of a network system for a vehicle, in particular a motor vehicle. A central network device of the network system is connected via signals to the network components by a path inside the network system, the path extending at least partially across a network segment of the network system. The network segment connects via signals the network component and a first activation device associated therewith to a switch device arranged in the path and to a second activation device associated therewith in an unbranched manner. The central network device responds to the first activation device by the switch device by sending a network function control signal.