Abstract: A power transmitting unit (PTU) for wireless power transmission (WPT) includes a communication transceiver and a power controller. The communication transceiver connects a communication link with at least one power receiving unit (PRU) through legacy communication and exchanges parameters necessary for the WPT through the connected communication link. The power controller is configured to transmit, to the PRU, a PTU beacon containing information about a dedicated power slot (DPS) allocated to the PRU in a super frame including a plurality of DPSs, to receive a PRU beacon from the PRU, to extract a phase difference between a plurality of antennas by analyzing a continuous wave (CW) of the PRU beacon, and to transmit power to the PRU in the allocated DPS in consideration of the phase difference.

Abstract: The present disclosure provides communications apparatus and method using an On-off keying (OOK) modulation based low power wake-up protocol suitable for use in IoT devices. The communication method according to an exemplary embodiment includes: transmitting, by a main radio module of a master device, an OOK modulated wake-up radio signal by using a narrow frequency band between an ISM band and a guard band in the ISM band; receiving, by a low power wake-up radio module of a slave device, the wake-up radio signal and to demodulate according to an OOK modulation scheme and awaken a controller of the slave device in a sleep mode; and after the controller wakes up from the sleep mode, transmitting data to be transmitted to the master device, by the controller of the slave device, through the main radio module.

Abstract: The present disclosure provides communications apparatus and method using an On-off keying (OOK) modulation based low power wake-up protocol suitable for use in IoT devices. The communication method according to an exemplary embodiment includes: transmitting, by a main radio module of a master device, an OOK modulated wake-up radio signal by using a narrow frequency band between an ISM band and a guard band in the ISM band; receiving, by a low power wake-up radio module of a slave device, the wake-up radio signal and to demodulate according to an OOK modulation scheme and awaken a controller of the slave device in a sleep mode; and after the controller wakes up from the sleep mode, transmitting data to be transmitted to the master device, by the controller of the slave device, through the main radio module.

Abstract: A power transmitting unit (PTU) for wireless power transmission (WPT) includes a communication transceiver and a power controller. The communication transceiver connects a communication link with at least one power receiving unit (PRU) through legacy communication and exchanges parameters necessary for the WPT through the connected communication link. The power controller is configured to transmit, to the PRU, a PTU beacon containing information about a dedicated power slot (DPS) allocated to the PRU in a super frame including a plurality of DPSs, to receive a PRU beacon from the PRU, to extract a phase difference between a plurality of antennas by analyzing a continuous wave (CW) of the PRU beacon, and to transmit power to the PRU in the allocated DPS in consideration of the phase difference.

Abstract: A pseudo-orthogonal code generator is provided. The pseudo-orthogonal code generator simplifies overall configuration and provides a more efficient operating speed by implementing a pseudo-orthogonal code generator using combined circuits instead of using a read only memory (ROM) circuit. The pseudo-orthogonal code generator reduces its overall size by reducing gate area.

Abstract: A pseudo-orthogonal code generator is provided. The pseudo-orthogonal code generator simplifies overall configuration and provides a more efficient operating speed by implementing a pseudo-orthogonal code generator using combined circuits instead of using a read only memory (ROM) circuit. The pseudo-orthogonal code generator reduces its overall size by reducing gate area.