A network includes a plurality of parent nodes to communicate in a wireless network via a wireless network protocol. A network node establishes a network connection to one of the parent nodes of the plurality of parent nodes in response to received beacons from the parent nodes. A signal analyzer in the network node processes a received signal strength of the beacons and the number of beacons received over a given time period from each of the parent nodes. The signal analyzer selects the parent node by analyzing the received signal strength for a number of beacons received from each parent node with respect to a number of expected beacons transmitted from each parent node of the plurality of parent nodes over the given time period.

The invention is adapted to acquire more useful log data. A master device (4) includes a timer element (45), adapted to acquire a moment; an instruction sending element (421), adapted to synchronize a moment measured by a slave timer element (14) of slave devices (1-3) with a moment acquired by the timer element (45) according to a time synchronization instruction containing moment information corresponding to the moment acquired by the timer element (45); and a slave log receiving element (423), adapted to receive slave logs (131).

A network configuration for the transmission of communication flows in a real-time communication network, wherein the network comprises components, which are connected by links, wherein an arrangement of the components and links of the network is described by a network topology, wherein said components of the network communicate via a defined set of communication flows, wherein the method comprises a first, a second, and a third module, as well as a first and a second feedback loop, wherein in a first step the first module computes, based on said network topology and said set of communication constraints, one route for each communication flow of said set of communication flows, and wherein, in a second step, after the first step has finished, said second module, computes a time-triggered schedule for the communication of said TT flows, so that one or more of the constraints related to said TT flows are fulfilled.

Provided is a computation device including a communication interface; a first transmission control part for sending a first communication frame at every predetermined cycle via a transmission path; a second transmission control part for sending a second communication frame in response to an arbitrary event request; and a priority management part. Upon receiving an issuance request of a second event request from a second event issuance part, the priority management part waits for completion of sending processing for a second communication frame corresponding to a first event request currently processed by the second transmission control part, and permits issuance of the second event request to the second event issuance part. The second transmission control part suspends processing for a subsequent first event request following the first event request currently processed until completion of processing for the second event request is complete.

Provided are a relay apparatus and a relay method for a passive optical network so as to largely extend a communicable distance while maintaining compatibility with existing network components. In the case of applying an optical relay to the passive optical network, a delay time is reduced by applying the optical relay so that entire transmission delay time considering the increased delay time may be within a preamble period of the upstream burst stream, thereby rapidly increasing a transmission distance of the passive optical network by using the optical relay.

A wireless microphone system efficiently combines a pair of antennas so that radio frequency (RF) signals may be transmitted to and from multiple receivers and multiple wireless microphones. The wireless microphone system supports a general radio access technology and may comply with a Digital Enhanced Cordless Telecommunications (DECT) specification. The resource manager combines a received RF component with a first digital component via a first coaxial link to a connected receiver. The receiver also combines a transmitted RF component with a second digital component via a second coaxial link to the resource manager. The first digital component further includes synchronization and data sub-components, which are separated at the receiver.

A method of radio communication in a system including a plurality of communicating modules, each communicating module being able to obtain at least one measured physical value and to transmit a message encapsulating at least one measured physical value to a hub device according to a given radio communication protocol, the sending of the message being performed during a communication time interval, defined by a start instant and an end instant, a waiting time separating two successive communication time intervals of one and the same communicating module. For each communicating module of the plurality of communicating modules, the waiting time is calculated as a function of an updated counter of the communicating module as a function of a receipt of an acknowledgement message originating from the hub device.

A sensor may determine a sampling pattern based on a group of synchronization signals received by the sensor. The sampling pattern may identify an expected time for receiving an upcoming synchronization signal. The sensor may trigger, based on the sampling pattern, a performance of a sensor operation associated with the upcoming synchronization signal. The performance of the sensor operation may be triggered before the upcoming synchronization signal is received.

A transmission system of embodiments is a transmission system including a plurality of transmission stations connected together via a single transmission path. Each transmission station includes a sending controller, an obtaining unit, and a first storage. The obtaining unit is configured to obtain first information regarding sending or reception of a communication frame in synchronization with sending or reception of the communication frame. The first storage is configured to store the first information and second information indicating the date and time of obtaining the first information.

A device includes an interface and Time Division Multiple Access (TDMA) Medium Access Control (MAC) circuitry coupled to the interface. The TDMA MAC circuitry detects a beacon in a frame having a defined frame duration and determines a frame compensation value based on a start time of the frame, a reference start time of the frame, and a number of elapsed frames. A current frame duration value is determined based on the frame compensation value and the defined frame duration.