Abstract: A system for monitoring a traffic situation includes at least one radar sensor unit for recording environmental data in a monitoring region of the radar sensor unit. A central processor evaluates the environmental data from the radar sensor unit and determines the traffic situation within the monitoring region based on the environmental data. A reference signal unit for outputting a reference signal to the radar sensor unit is configured to modulate a radar signal emitted by the radar sensor unit and to reflect a modulated radar signal back to the radar sensor unit as a reference signal. The processor identifies the modulated radar signal as a reference signal from the reference signal unit and recognizes a malfunction of the radar sensor unit if a reference signal is not received by the radar sensor unit.

Abstract: A network mechanism for a communication network, e.g., Ethernet environment, includes a first control mechanism with an assigned first physical port and a second control mechanism with an assigned second physical port, the first and the second physical port being configured to receive and send data via a transmission medium. The network mechanism is configured such that transmitted data from the first control mechanism are coupled by an internal transmit connector of the first control mechanism via the first physical port into the transmission medium and received data at the second physical port are routed to an internal receive connector of the first control mechanism. Alternatively, received data can be routed crosswise to the other control mechanism, i.e., the control mechanism not assigned to the receiving physical port. The crosswise routing enables the formation of two independent ring-shaped communication paths of different transmit/receive directions within a single physical ring-shaped network.

Abstract: A method and system for upgrading a service or microservice within a system where an updated version of the service is employed in the system without immediately allowing the service from assuming control of the final output of the system is provided.

Abstract: A method for memory modification resulting in a test probe for examining a program under test substantially during run-time is provided. The ability to inject faults or errors in order to test a reaction of the program to a fault in a particular state and to individually replace access to a regular operand by accessing a shadow operand allow for non-intrusive tests while the program is substantially executed in real-time. The program itself is not substantially altered for testing purposes.

Abstract: The disclosed embodiments relate to a method for memory modification resulting in a test probe for examining a program under test substantially during run-time. The ability to inject faults or errors in order to test the program's reaction to a fault in a particular state and to individually replace access to a regular operand by accessing a shadow operand allow for non-intrusive tests while the program is substantially executed in real-time and whereby the program itself is not substantially altered for testing purposes.

Abstract: A method for operating a network arrangement having a plurality of network systems is disclosed. Data belonging to a first class is synchronously transmitted in a specified time slot identical for all network systems. A network system, which owing to a synchronization error during the specified time slot, receives data belonging to other classes from a plurality of senders, then only sends data belonging to the first class, but now in standard messages belonging to class 2. Non-vital data belonging to the other classes is no longer transmitted in this operating state. Improved failure safety and in particular a fail-operational mode is provided by the behavior of the network systems in the event of synchronization errors. A network system which implements the method and a network arrangement having a plurality of corresponding network systems is also proposed.

Abstract: The invention relates to a method for operating a communication network (101), in particular an Ethernet network. Network devices (1) which are coupled to the network comprise a switch device (4), a first and a second control device (2, 3) which are coupled to the switch device (4), and the switch device (4) comprises for the first and the second control device (2, 3) a respective input port (10, 14) and emitter port (9, 13) for sending and receiving data via the communication network (6). Ring-shaped communication paths for data are provided so that redundant data can be transmitted in different directions and checked for consistency. An improved protection against failure and error analysis in the event of transmission errors are ensured by the ring-shaped structure using bidirectional communication paths. The invention further relates to a network arrangement (101) comprising several corresponding network devices (100, 200, 300) which operate according to the method.

Abstract: In order to achieve a vehicle wheel (10) slip relative to a roadway (12) while braking the vehicle, said slip being as advantageous as possible, the rotational speed (w) of the wheel (10) can be actively reduced by an ABS by means of a braking intervention and passively allowed to accelerate again via the roadway (12) when the brake is released. The slip of the wheel (10) oscillates by an optimal slip value during the ABS regulating process. The aim of the invention is to improve an anti-lock braking system for a vehicle. In the method according to the invention, at least one wheel (10) of the vehicle is supplied with a braking torque (Mb) in order to temporarily reduce a travel speed (v) of the vehicle relative to a rolling surface (12), said braking torque acting against a rotating direction (14) of the wheel (10).

Abstract: The disclosure relates to at least two processor cores of a multicore processor for dual-lane computing of a security-critical application. The two processor cores are used to full capacity in different working cycles for computing operations of different applications, rather than computing operations being redundantly carried out by both processor cores in each computing cycle. This advantageously avoids duplication of the computational capacity required. For the processor cores to monitor each other, the computing operations are alternatingly carried out by the two processor cores. Any errors may be avoided by the error detection mechanisms described. Although the quality of the error detection is somewhat lower than the “dual-lane operation” known from the prior art with parallel, redundant multi-lane calculations, the quality of the error detection may satisfy the requirement of lower computational outlay, (e.g., when an economic implementation of the control system is required).

Abstract: Methods and apparatuses for increasing quality of service in a network having nodes if there is a faulty node which can result in data traffic being overloaded in at least one part of the network are provided. The disclosed embodiments of the invention can be used in the field of safety-critical applications, such as medial applications, monitoring devices, and in-vehicle communication systems.

Abstract: A method for operating a communications network, in particular an Ethernet network is provided. Network devices that are coupled to the network have a switch device and a control device that is coupled to the switch device, and the switch device has at least one receiving port and a sending port for sending and receiving data via the communications network. Fuse devices for monitoring a particular data transfer rate are assigned to the receiving ports. The fuse devices block data reception at a particular receiving port when a previously determined maximum data transfer rate is exceeded. A possible annular structure using bidirectional communication paths and the limitation of the data transfer rate at the receiving ports improve fail-safety and error analysis in the event of transfer and hardware errors, in particular babbling idiot errors. The invention further relates to a network arrangement having a plurality of corresponding network devices which function according to said method.

Abstract: In order to reduce data traffic in a network, a master node sends master data to at least one checking instance. The master data are checked by the checking instance. In the absence of errors, either the master data or slave data determined by the slave node are sent by the checking instance to the data-processing unit. When an error is recognized, all master data and slave data available at the checking instance are sent by the checking instance to the data-processing unit.

Abstract: A communications network with a plurality of network devices is provided. The communications network has a plurality N of virtual networks, which are implemented in the communications network in such a manner that each of the network devices is coupled to the communications network via at least two virtual networks. The communications network also has a plurality of network segments. A subset of the network devices is assigned to each of the network segments, wherein each network device arranged at a peripheral region of a network segment has N limiting units, each of the N limiting units being assigned to a respective one of the N virtual networks and designed to limit a data reception of the respective virtual network to a threshold for the data transmission rate predetermined for the respective virtual network.

Abstract: A method for operating at least two data processing units with high availability, in particular in a vehicle, is provided. A first data processing unit and a second data processing unit can each provide the same function to an extent of at least 60 percent or at least 90 percent. The second data processing unit removes automatically at least one entry for a process to be executed from a memory unit or automatically places itself into a standby mode.

Abstract: A method for operating a communication network, in particular an ethernet network is provided. Each network device coupled to the network has a first control device, a first switch device which is assigned to the first control device, a second control device, and a second switch device which is assigned to the second control device. Each switch device has a transmitting and receiving port for transmitting and receiving data via the communication network, a first internal transmitting and receiving port for transmitting and receiving data between the switch devices, and a second internal transmitting and receiving port for transmitting and receiving data to or from the control device. A respective data exchange at the first and second internal transmitting and receiving port is prioritized over a data exchange at the transmitting and receiving port for transmitting and receiving data via the communication network.

Abstract: Methods and apparatuses for increasing quality of service in a network having nodes if there is a faulty node which can result in data traffic being overloaded in at least one part of the network are provided. The disclosed embodiments of the invention can be used in the field of safety-critical applications, such as medial applications, monitoring devices, and in-vehicle communication systems.

Abstract: In order to reduce data traffic in a network, a master node sends master data to at least one checking instance. The master data are checked by the checking instance. In the absence of errors, either the master data or slave data determined by the slave node are sent by the checking instance to the data-processing unit. When an error is recognized, all master data and slave data available at the checking instance are sent by the checking instance to the data-processing unit.

Abstract: Systems and methods are provided for operating a network arrangement including multiple network devices that are coupled to each other in a ring structure. Each network device includes a control device and a switch device with at least two ports for coupling to a communication path. During operation, at least two VLANs are simultaneously provided in the ring structure, and the sending of a data packet from the control device of a selected network device is performed via a port of the switch device in one of the two VLANs. In order to achieve this, the other port of the switch device of the selected network device is deactivated for the one VLAN. By using two VLANs, a redundant and reliable data transmission may be achieved. A destabilization of the VLANs in the network ring is prevented by the targeted deactivation of specific ports of the sending network device.

Abstract: A communications network with a plurality of network devices is provided. The communications network has a plurality N of virtual networks, which are implemented in the communications network in such a manner that each of the network devices is coupled to the communications network via at least two virtual networks. The communications network also has a plurality of network segments. A subset of the network devices is assigned to each of the network segments, wherein each network device arranged at a peripheral region of a network segment has N limiting units, each of the N limiting units being assigned to a respective one of the N virtual networks and designed to limit a data reception of the respective virtual network to a threshold for the data transmission rate predetermined for the respective virtual network.

Abstract: In order to achieve a vehicle wheel (10) slip relative to a roadway (12) while braking the vehicle, said slip being as advantageous as possible, the rotational speed (w) of the wheel (10) can be actively reduced by an ABS by means of a braking intervention and passively allowed to accelerate again via the roadway (12) when the brake is released. The slip of the wheel (10) oscillates by an optimal slip value during the ABS regulating process. The aim of the invention is to improve an anti-lock braking system for a vehicle. In the method according to the invention, at least one wheel (10) of the vehicle is supplied with a braking torque (Mb) in order to temporarily reduce a travel speed (v) of the vehicle relative to a rolling surface (12), said braking torque acting against a rotating direction (14) of the wheel (10).