A network system includes: a first master device configured to carry out, in every cycle, (i) a process of receiving data from a first slave device, (ii) a process of carrying out, in accordance with pre-allocation, a part of a first process with respect to the data which has been received, (iii) a process of transmitting data corresponding to a remainder of the first process to an outside entity in accordance with the pre-allocation and receiving a result corresponding the remainder of the first process, and (iv) a process of transmitting, to the first slave device, a result corresponding to the first process; at least one second master device configured to transmit, to the first master device before a period allocated to the first process within the cycle ends, the result corresponding to the remainder of the first process with respect to the data received from the first master device; a first network configured to transmit data between the first slave device and the first master device; and a second network configured to transmit data between the first master device and the at least one second master device.

A subscriber station for a serial bus system. The subscriber station has a communication control device for controlling a communication of the subscriber station with at least one other subscriber station, a transmitting/receiving device for transmitting a transmission signal generated by the communication control device, and a scheduling unit for scheduling a temporal access of the subscriber station to the bus in at least one time slot of a cycle of temporally consecutive time slots. At least one time slot is provided in a cycle for each subscriber station of the bus for transmitting its transmission signal and the cycle repeats cyclically. The scheduling unit determines, together with the other subscriber stations of the bus in the operation of the bus system using a priority of the transmission signal, which time slot of the cycle the transmitting/receiving device may use for transmitting the transmission signal on the bus.

A subscriber station for a serial bus system. The subscriber station has a communication control device for controlling a communication of the subscriber station with at least one other subscriber station of the bus system, a transmitting/receiving device for transmitting a transmission signal in a frame on a bus of the bus system, and a scheduling unit for scheduling a temporal access of the subscriber station to the bus in at least one time slot of a cycle of temporally consecutive time slots, at least one time slot being provided in a cycle for each subscriber station for transmitting its transmission signal and the cycle repeating cyclically. The scheduling unit is designed to determine an assignment that specifies which time slot of the cycle the transmitting/receiving device is allowed to use for transmitting the frame for the transmission signal on the bus.

A network system includes: a first master device configured to carry out, in every cycle, (i) a process of receiving data from a first slave device, (ii) a process of carrying out, in accordance with pre-allocation, a part of a first process with respect to the data, (iii) a process of transmitting data corresponding to a remainder of the first process to an outside entity in accordance with the pre-allocation and receiving a result corresponding the remainder of the first process, and (iv) a process of transmitting, to the first slave device, a result corresponding to the first process; and at least one second master device configured to transmit, to the first master device before a period allocated to the first process within the cycle ends, the result corresponding to the remainder of the first process with respect to the data received from the first master device.

Methods, systems, and apparatuses for scheduling a plurality of Virtual Links (VLs) in a Time-Triggered Ethernet (TTE) network by pre-processing, by a scheduling algorithm implemented by a Network Scheduling Tool (NST), VL information prior to initiating a scheduling procedure by, detecting VL information associated with VLs that having common physical resources that include a common direction of a switching port or an egress end system port; and storing the VL information associated with the set of VLs for retrieval by the NST to parse a VL list for scheduling to determine one or more conflicting VLs in functionalities with a VL that is to be scheduled by a first pass that attempts favoring scheduling a VL into a bin when previously scheduled VLs fail to exhibit conflicts; and a second pass that attempts to resolve at least one conflict exhibited in the scheduling procedure by offsetting a transmit time.

Methods, systems, and apparatuses for scheduling a plurality of Virtual Links (VLs) in a Time-Triggered Ethernet (TTE) network by determining a subset of a group of bins allocated to TT traffic; restricting the subset bin groups to a specified harmonic subdivided pattern with a certain duration; allocating the subset of bin groups in accordance with bin group equated with a rate at least twice as high as a highest TT traffic rate available in the network to enable control of partitioned traffic by using a set of media reservations; checking whether a bin selected via a bin selection process for scheduling a TT Virtual Link (VL) is a valid TT bin, else proceeding to a subsequent bin until a valid TT bin is returned for the TT VL, and reserving using at least one media reservation for a TT VL to be scheduled by temporal partitioning at the restricted rate.

Provided are a message processing method, an apparatus, an electronic control unit, and a readable storage medium. The method includes configuring different sending times for any two different electronic control units corresponding to the same message ID in sending time configuration information of electronic control units; and when sending messages to a CAN bus, sending, by the electronic control units, the messages to the CAN bus at available sending times according to corresponding sending time configuration information, so that the time for any two different electronic control units corresponding to the same message ID to send messages to the CAN bus is separated. The method can improve the safety of the unmanned system.

A serial communications bus system comprising a plurality of end users arranged to transmit data on a common data bus, each end user provided with a bus arbiter, physically separate from the respective end user, configured to define, for that end user, a cycle of transmission enable intervals whereby the end user may transmit data on the data bus and transmission disable intervals whereby the end user may not transmit data on the data bus.

A method for operating a wireless field-device network, comprising: wirelessly transmitting a process variable and an expected remaining running time from each field device to the other field devices within a field-device network so that in each field device the process variable and the expected remaining running time of the other field devices of the field-device network are stored; activating a second radio module of that field device which has the highest expected remaining running time, and deactivating the second radio modules of the other field devices within the field-device network; wirelessly transmitting the process variables of all field devices of the field-device network stored in the active field device, or at least a subset of the stored process variables, to the superordinate unit, which is not part of the field-device network, by means of the second radio module of the active field device.

Systems, methods, and apparatus for improving bus latency are described. A data communication method includes receiving a trigger actuation command from a bus master coupled to the serial bus, determining that a sequence is being executed in the slave device, and providing a trigger actuation signal corresponding to the trigger actuation command when execution of the sequence has been completed. A sequence initiation command may be received before the trigger actuation command, and the sequence may be initiated in response to the sequence initiation command. The trigger actuation command may be queued in a first queue, the sequence initiation command in may be queued in a second queue. Trigger actuation commands in the first queue may be associated with sequence initiation commands in the second queue. The sequence may be initiated in response to a sequence initiation command associated with the trigger actuation command corresponding to the trigger actuation signal.