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 radio communication repeater for operating in a Time Division Multiple Access radio communication system with a plurality of time slots to transmit packets. The repeater includes a transmitter to transmit a plurality of the packets in a transmit time slot assigned to that repeater and a receiver to receive a plurality of the packets from all other time slots of the TDMA radio communication system other than the transmit time slot assigned to that repeater. The repeater also includes a controller to process the received packets from all other time slots of the TDMA radio communication system other than the transmit time slot assigned to that repeater and, if the received packets have different recipient identifiers, to forward the received packets for transmission by the transmitter in the transmit time slot assigned to that repeater as a frame comprising a plurality of packets having different recipient identifiers.

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.

To solve the problem of still being able to use an inexpensive network controller which can store only a single transmission time, even when telegrams from a plurality of application modules need to be sent in synchronized fashion and the transmission times thereof need to be reliably ascertained and reliably associated with the respective telegrams, provided is a communication device for the synchronized sending of telegrams, a communication system including such a communication device, and a method for the synchronized sending of telegrams. The communication device comprises a coordination device.

The present invention provides, on the basis of congestion of a network, an arrangement state of nodes, and a quality of a communication channel, a fast synchronization scheduling apparatus and method for reducing a listening time of a node that desires to join. The fast synchronization scheduling apparatus and method include a radio frequency (RF) transmission and reception module configured to transmit and receive RF signals from nearby channels, a received signal strength indicator (RSSI) reception and storage module configured to receive RSSI values from the RF signals received from the RF transmission and reception module and store the received RSSI values, a channel sorting module configured to measure Channel Quality Estimation (CQE) values of the respective channels by putting the RSSI values of the respective channels received from the RSSI reception and storage module into a CQE formula and to sort the channels in order of highest CQE value (highest channel quality) based on the measured CQE values, and a channel setting and advertisement packet (ADV) reception module configured to receive an input of a channel having the highest CQE value from the channel sorting module, set the channel, and start a listening operation to receive an ADV in the set channel.

The fast synchronization scheduling apparatus includes: a radio frequency (RF) transmission and reception module configured to transmit and receive RF signals from nearby channels, a received signal strength indicator (RSSI) reception and storage module configured to receive RSSI values from the RF signals received from the RF transmission and reception module and store the received RSSI values, a channel sorting module configured to measure Channel Quality Estimation (CQE) values of the respective channels by putting the RSSI values of the respective channels received from the RSSI reception and storage module into a CQE formula and to sort the channels in order of highest CQE value (highest channel quality) based on the measured CQE values.

The fast synchronization scheduling apparatus includes: a radio frequency (RF) transmission and reception module configured to transmit and receive RF signals from nearby channels, a received signal strength indicator (RSSI) reception and storage module configured to receive RSSI values from the RF signals received from the RF transmission and reception module and store the received RSSI values, a channel sorting module configured to measure Channel Quality Estimation (CQE) values of the respective channels by putting the RSSI values of the respective channels received from the RSSI reception and storage module into a CQE formula and to sort the channels in order of highest CQE value (highest channel quality) based on the measured CQE values.

The present invention provides, on the basis of congestion of a network, an arrangement state of nodes, and a quality of a communication channel, a fast synchronization scheduling apparatus and method for reducing a listening time of a node that desires to join. The fast synchronization scheduling apparatus and method include a radio frequency (RF) transmission and reception module configured to transmit and receive RF signals from nearby channels, a received signal strength indicator (RSSI) reception and storage module configured to receive RSSI values from the RF signals received from the RF transmission and reception module and store the received RSSI values, a channel sorting module configured to measure Channel Quality Estimation (CQE) values of the respective channels by putting the RSSI values of the respective channels received from the RSSI reception and storage module into a CQE formula and to sort the channels in order of highest CQE value (highest channel quality) based on the measured CQE values, and a channel setting and advertisement packet (ADV) reception module configured to receive an input of a channel having the highest CQE value from the channel sorting module, set the channel, and start a listening operation to receive an ADV in the set channel.

Systems and methods of transporting internal radio base station (RBS) interface information over a packet network are presented. In one exemplary embodiment, in an interworking function (IWF) for communicating packets between a radio equipment (RE) and a radio equipment controller (REC) of a radio base station (RBS), a method may include receiving a packet sent from another IWF and having internal RBS interface information and residence time measurement (RTM) information that characterizes an asymmetry between processing times on links in different directions between the RE and the REC. Further, the method may include determining an asymmetry compensation that compensates for the asymmetry using the RTM information. Also, the method may include applying the asymmetry compensation to a timestamp of the internal RBS interface information to obtain an updated internal RBS interface information. In addition, the method may include transmitting the updated internal RBS interface information to one of the RE and the REC that is attached to the IWF.

A time-triggered Ethernet (TTE)-based data transmission method and node device, solving the problem of wasting network bandwidth resources in the prior art during TTE-based data transmission; in the method, a main node determines a scheduling period table based on a time-triggered packet; when a node has a to-be-transmitted event-triggered packet, and the node determines, according to the information stored in the scheduling period table, that a physical link occupied by the event-triggered packet is not in conflict with a physical link corresponding to the current time slot, the node transmits the event-triggered packet in the current time slot. The main node does not need to separately allocate time for the event-triggered packet of each node. Therefore, when a node has a to-be-transmitted event-triggered packet, the node can transmit the event-triggered packet in the current time slot as long as the physical link occupied by the event-triggered packet is not in conflict with the physical link corresponding to the current time slot, thus effectively improving data transmission efficiency and network bandwidth utilization.