Abstract: A repeater and a synchronization method for the same are provided. The synchronization method includes: configuring a base station to transmit an input signal during downlink transmission durations according to a time division duplex (TDD) configuration, in which the TDD configuration defines a predetermined pattern composed of an uplink transmission duration and a downlink transmission duration; configuring a processor generate a received signal code according to the input signal; configuring the processor to sample the received signal code by using a signal window to generate a target pattern; configuring the processor to dynamically compare the target pattern with the predetermined pattern according to the TDD configuration, positions of the received downlink transmission durations and positions of the received uplink transmission durations stored in a memory of the repeater, and determine whether the target pattern matches to the predetermined pattern.

Abstract: An isolation coupling structure for transmitting a feedback signal between a secondary side and a primary side of a voltage conversion device includes a first dielectric layer including a first face and a second face opposite to the first face, a first coupling coil disposed on the first face enclosing to form an inner region; a second coupling coil configured to couple with the first coupling coil. The second coupling coil includes a first coil portion and a second coil portion, where the first coil portion is disposed on the second face, the second coil portion is disposed on the first face and located inside the inner region. The second coil portion is isolated from the first coupling coil, and the first coil portion and the second coil portion are electrically connected. The technical effect is that it can realize the electrical isolation and the coupling with low cost and small package size.

Abstract: A wireless communication system includes a base station, a customer premise equipment (CPE) and a repeater. The repeater includes a down-link circuit and an up-link circuit. The down-link circuit includes a first receiving antenna array and a first transmitting antenna array, and the up-link circuit includes a second receiving antenna array and a second transmitting antenna array. The down-link circuit is separated from the up-link circuit with a first predetermined distance.

Abstract: A repeater and a synchronization method for the same are provided. The synchronization method includes: configuring a base station to transmit an input signal during downlink transmission durations according to a time division duplex (TDD) configuration, in which the TDD configuration defines a predetermined pattern composed of an uplink transmission duration and a downlink transmission duration; configuring a processor generate a received signal code according to the input signal; configuring the processor to sample the received signal code by using a signal window to generate a target pattern; configuring the processor to dynamically compare the target pattern with the predetermined pattern according to the TDD configuration, positions of the received downlink transmission durations and positions of the received uplink transmission durations stored in a memory of the repeater, and determine whether the target pattern matches to the predetermined pattern.

Abstract: A repeater includes a donor device, a service device, a control board circuit and a processing circuit. The repeater provides beam selection mechanisms applicable to several scenarios for base stations and CPE, in which an adaptive gain control mechanism can be utilized to reduce oscillations in a down-link circuit and an up-link circuit of the control board circuit.

Abstract: A wireless communication system includes a base station, a customer premise equipment (CPE) and a repeater. The repeater includes a down-link circuit and an up-link circuit. The down-link circuit includes a first receiving antenna array and a first transmitting antenna array, and the up-link circuit includes a second receiving antenna array and a second transmitting antenna array. The down-link circuit is separated from the up-link circuit with a first predetermined distance.

Abstract: A method for controlling an antenna array is provided, which includes following steps. Associations with a plurality of mobile devices are established, and at least one characteristic parameter table corresponding to the mobile devices is generated. When a plurality of transmission request signals are received simultaneously and the mobile devices are divided into a user group, a multi-user antenna index of the antenna array is generated based on the at least one characteristic parameter table, and a plurality of data streams corresponding to the mobile devices are transmitted simultaneously through the antenna array. When the transmission request signals are received simultaneously and the mobile devices are not divided into the user group, a single-user antenna index of the antenna array is generated based on the at least one characteristic parameter table, and the data streams corresponding to the mobile devices are transmitted one-by-one through the antenna array.

Abstract: A repeater includes a donor device, a service device, a control board circuit and a processing circuit. The repeater provides beam selection mechanisms applicable to several scenarios for base stations and CPE, in which an adaptive gain control mechanism can be utilized to reduce oscillations in a down-link circuit and an up-link circuit of the control board circuit.

Abstract: A time-reversal indoor detection system and method are provided. The system includes an anchor node device, an access point (AP) device, and a first electronic device. The first wireless communication circuit of the anchor node device is configured to send a probe signal, a third wireless communication circuit of the access point device is configured to receive the probe signal, a processor is configured to obtain a current CSI from the probe signal, and to compare the current CSI to a preset CSI, and when a first CSI included in the preset CSI is matched to the current CSI, a second wireless communication circuit of the anchor node device is configured to activate at least one function of a first electronic device through a second communication protocol.

Abstract: Disclosed are a method and a system of device-to-device tunnel establishment between small cells, applied to a wireless backhaul management device, a first small cell and a second small cell. The method comprises: matching the first small cell and the second small cell according to a first discovery response and a second discovery response; submitting a match report; replying with a match report response; conducting a D2D connection authentication procedure between the second small cell and the first small cell; wirelessly connecting the second small cell and the first small cell, conducting a connection test and submitting a connection test report; replying with a D2D tunnel establishment decision according to the connection test report; and establishing a D2D tunnel between the second small cell and the first small cell.

Abstract: An isolation coupling structure for transmitting a feedback signal between a secondary side and a primary side of a voltage conversion device includes a first dielectric layer including a first face and a second face opposite to the first face, a first coupling coil disposed on the first face enclosing to form an inner region; a second coupling coil configured to couple with the first coupling coil. The second coupling coil includes a first coil portion and a second coil portion, where the first coil portion is disposed on the second face, the second coil portion is disposed on the first face and located inside the inner region. The second coil portion is isolated from the first coupling coil, and the first coil portion and the second coil portion are electrically connected. The technical effect is that it can realize the electrical isolation and the coupling with low cost and small package size.

Abstract: A time-reversal indoor detection system and method are provided. The system includes an anchor node device, an access point (AP) device, and a first electronic device. The first wireless communication circuit of the anchor node device is configured to send a probe signal, a third wireless communication circuit of the access point device is configured to receive the probe signal, a processor is configured to obtain a current CSI from the probe signal, and to compare the current CSI to a preset CSI, and when a first CSI included in the preset CSI is matched to the current CSI, a second wireless communication circuit of the anchor node device is configured to activate at least one function of a first electronic device through a second communication protocol.

Abstract: A backlight module includes a back board, an illumination assembly, a supporting component and a frame. The illumination assembly is disposed on the back board. The supporting component includes a base, a first extending plate and a second extending plate. The base is disposed on the back board. Both of the first extending plate and the second extending plate stand on the base and extend along an axial direction of the base so that the first extending plate and the second extending plate are at a first angle and a second angle relative to the base, respectively. The first extending plate is located between the second extending plate and the illumination assembly. The frame is disposed on the supporting component, and the illumination assembly is located between the frame and the back board.

Abstract: The present disclosure illustrates a bidirectional wireless charging device. The bidirectional wireless charging device comprises a transceiver chip which is configured to receive a switch signal. The transceiver chip comprises a power stage circuit and a control module. The power stage circuit is coupled to a coil, and the control module is coupled to the power stage circuit. The power stage circuit is configured to output a voltage to the coil, or to receive an induced voltage from the coil. The control module is configured to control the transceiver chip to enter a power mode or a charging mode based upon the switch signal. When the transceiver chip enters the power mode, the transceiver chip provides the voltage to the coil. When the transceiver chip enters the charging mode, the transceiver chip receives the induced voltage from the coil and charges a power storage unit.

Abstract: A radio frequency signal processing method for a wireless communication device, which includes an omni-directional antenna and a plurality of directional antennas, includes receiving a request signal from a first sending node with the omni-directional antenna, sending a confirming signal to the first sending node with the omni-directional antenna, receiving a data signal from the first sending node with a first directional antenna of the plurality of directional antennas according to the request signal and a result of a training packet process, transmitting an acknowledge signal to the first sending node with the first directional antenna, and receiving follow-up signals with the omni-directional antenna. The request signal is utilized to ask the wireless communication device to receive the data signal.

Abstract: Disclosed are a method and a system of device-to-device tunnel establishment between small cells, applied to a wireless backhaul management device, a first small cell and a second small cell. The method comprises: matching the first small cell and the second small cell according to a first discovery response and a second discovery response; submitting a match report; replying with a match report response; conducting a D2D connection authentication procedure between the second small cell and the first small cell; wirelessly connecting the second small cell and the first small cell, conducting a connection test and submitting a connection test report; replying with a D2D tunnel establishment decision according to the connection test report; and establishing a D2D tunnel between the second small cell and the first small cell.

Abstract: A method for controlling an antenna array is provided, which includes following steps. Associations with a plurality of mobile devices are established, and at least one characteristic parameter table corresponding to the mobile devices is generated. When a plurality of transmission request signals are received simultaneously and the mobile devices are divided into a user group, a multi-user antenna index of the antenna array is generated based on the at least one characteristic parameter table, and a plurality of data streams corresponding to the mobile devices are transmitted simultaneously through the antenna array. When the transmission request signals are received simultaneously and the mobile devices are not divided into the user group, a single-user antenna index of the antenna array is generated based on the at least one characteristic parameter table, and the data streams corresponding to the mobile devices are transmitted one-by-one through the antenna array.

Abstract: A backlight module includes a back board, an illumination assembly, a supporting component and a frame. The illumination assembly is disposed on the back board. The supporting component includes a base, a first extending plate and a second extending plate. The base is disposed on the back board. Both of the first extending plate and the second extending plate stand on the base and extend along an axial direction of the base so that the first extending plate and the second extending plate are at a first angle and a second angle relative to the base, respectively. The first extending plate is located between the second extending plate and the illumination assembly. The frame is disposed on the supporting component, and the illumination assembly is located between the frame and the back board.

Abstract: The present disclosure illustrates a bidirectional wireless charging device. The bidirectional wireless charging device comprises a transceiver chip which is configured to receive a switch signal. The transceiver chip comprises a power stage circuit and a control module. The power stage circuit is coupled to a coil, and the control module is coupled to the power stage circuit. The power stage circuit is configured to output a voltage to the coil, or to receive an induced voltage from the coil. The control module is configured to control the transceiver chip to enter a power mode or a charging mode based upon the switch signal. When the transceiver chip enters the power mode, the transceiver chip provides the voltage to the coil. When the transceiver chip enters the charging mode, the transceiver chip receives the induced voltage from the coil and charges a power storage unit.

Abstract: A voltage detection circuit comprises a reference resistor including a terminal for receiving a first voltage; a reference transistor including a control terminal for receiving a second voltage; a comparator, including a first input terminal for receiving a converted voltage and a second input terminal for receiving the second voltage, for generating an output voltage; and a voltage dropping circuit series, comprising a plurality of voltage dropping circuits connected in a series, for converting an input voltage into the converted voltage; wherein the comparator indicates whether the input voltage matches a specific multiple of a voltage difference between the first voltage and the second voltage, and the specific multiple relates to a number of the plurality of voltage dropping circuits.