Techniques are described for wireless communications. One method includes determining a contention window size for a first broadcast transmission or a first multicast transmission on at least one channel of a shared radio frequency spectrum band, where the first broadcast transmission or the first multicast transmission is targeted for a first plurality of UEs, and contending for access to the at least one channel of the shared radio frequency spectrum band for the first broadcast transmission or the first multicast transmission based at least in part on the determined contention window size. In some cases, the first broadcast transmission or the first multicast transmission may be an example of a multipoint transmission, which may include a coordinated multipoint transmission.

A user station for a serial bus system. The user station includes a communication control device for controlling a communication of the user station with at least one other user station, and a transceiver device to serially transmit a transmission signal, generated by the communication control device, onto a bus, and serially receive signals from the bus. The communication control device generates the transmission signal according to a frame and inserts into the frame two check sums that include different bits of the frame in the computation. The communication control device inserts dynamic stuff bits into the frame in such a way that an inverse stuff bit is inserted into the bit stream of the frame after 5 identical bits in succession. The communication control device computes the two check sums so that a maximum of one of the two check sums includes the dynamic stuff bits in the computation.

A multidrop network system includes N network devices. The N network devices include a master device and multiple slave devices, and each network device has an identification code as its own identification in the multidrop network system. The N network devices have N identification codes and obtain transmission opportunities in turn according to the N identification codes in each round of data transmission. Each network device performs a count operation to generate a current count value, and when the identification code of a network device is the same as the current count value, this network device obtains a transmission opportunity. After a device obtains the transmission opportunity, it determines whether a cut-in signal from another network device is observed in a front duration of a predetermined time slot, and then determines whether to abandon/defer the right to start transmitting in the remaining duration of the predetermined time slot.

An operation method of a first communication node constituting a vehicle network includes transitioning an operation state of the first communication node to a wake-up state when a preconfigured event is detected; determining whether a physical layer collision avoidance (PLCA) function is deactivated; in response to determining that the PLCA function is deactivated, generating a message including an indicator indicating that the PLCA function is deactivated; and transmitting the message.

The present disclosure is directed to a device and method for generating and transmitting a TDM signal including both raw data and processed data. The device includes a sensor having a time division multiplexing (TDM) interface. The TDM interface transmits both raw data and processed data in a single TDM signal by reserving one or more slots inside a TDM frame for transmission of the processed data. The sensor also embeds additional information inside a data stream of raw data by repurposing one or more of values of the raw data as an exception code, flag, or another type of notification. The device is also enabled to transmit data, and disabled when not in use in order to conserve power.

An industrial system for controlling backplane communication, including: a cluster manager including a primary switch linked to a primary control module, at least one Input/Output, I/O, module including a secondary switch linked to a secondary control module, a unidirectional communication line linking the cluster manager to the at least one IO module through passive base plates, wherein the cluster manager includes a transmission port and a reception port on the unidirectional communication line and the at least one Input/Output module includes a reception port on the unidirectional communication line, wherein the primary control module is configured to generate a pulse via the transmission port on the unidirectional communication line, wherein, upon reception of the pulse, the primary control module is configured to create a primary timestamp from a primary clock of the primary switch and the secondary control module is configured to create a secondary timestamp from a secondary clock of the secondary switch, wherein the primary control module is configured to send a message via the transmission port on the unidirectional communication line to the secondary control module, the message including the primary timestamp, wherein, upon reception of the message, the secondary control module is configured to synchronize the secondary clock with the primary clock based on the received primary timestamp and secondary timestamp.

A master node (11) transmits a bandwidth extension instruction including an extension duration D.sub.EX, an extension time slot number N.sub.EX, and an extension time T.sub.EX to multiple slave nodes (12). The master node (11) and the multiple slave nodes (12) execute a bandwidth extension process of modifying a communication frame such that the start time of the following cycle following the cycle designated by the extension time T.sub.EX is advanced by the extension duration D.sub.EX, the time slot identified by the extension time slot number N.sub.EX is extended by the extension duration D.sub.EX, and the time slot identified by the shortening time slot number N.sub.SH is shortened by the extension duration D.sub.EX. The master node (11) and the slave nodes (12) communicate with each other using the assigned time slots.

Disclosed is a method for clock synchronization of an industrial internet field broadband bus, wherein the method is applicable to an industrial internet field broadband bus architecture system including a bus controller and at least one bus terminal, the bus controller is connected with the bus terminal over a two-wire data transfer network, and the method includes steps of: electing one of the bus controller and the bus terminal as a best master clock; determining whether an IP address of the device of the best master clock is the same as an IP address of the bus controller; if so, then determining the bus controller as a master device of clock synchronization, and transmitting by the bus controller a synchronization message to the bus terminal for clock synchronization; and otherwise, returning to the step of electing one of the bus controller and the bus terminal as the best master clock.

Provided is a control device capable of reducing power consumption in a control system. The control device includes a master control unit and at least one slave control unit that is connected to the master control unit via a communication line. The master control unit includes a circuit for, upon completion of data transmission from the slave control unit via an uplink, transmitting an instruction for deactivating the uplink to the slave control unit via a downlink, as well as a circuit for, in order to obtain data from the slave control unit, transmitting an instruction for activating the uplink to the slave control unit via the downlink. The slave control unit includes a circuit for keeping the downlink active, and for activating/deactivating the uplink in accordance with an instruction from the master control unit transmitted via the downlink.

A stator segment for a linear motor-based transport system is developed to the effect that a transmitter for cyclic transmission of a control data record in a first clock cycle also transmits, in addition to transmitting the control data record, a position value in a clock-synchronized manner, wherein a plurality of positions are available as a sequence with a quantity of elements and an element with an index corresponds to a position, where the transmitter unit is configured such that, upon every first clock cycle, the index is incremented commencing from a starting value and an element is transmitted after the control data record, where the transmitter unit is furthermore configured to transmit all elements in one transmission interval, and where the transmission interval corresponds to a multiple of the first clock cycle.