US Patent No. 10,973,054

WIRELESS TRANSCEIVER AND WIRELESS COMMUNICATION METHOD


Patent No. 10,973,054
Issue Date April 06, 2021
Title Wireless Transceiver And Wireless Communication Method
Inventorship Der-Zheng Liu, Hsinchu County (TW)
Assignee REALTEK SEMICONDUCTOR CORPORATION, Hsinchu (TW)

Claim of US Patent No. 10,973,054

1. A wireless transceiver capable of reducing signal interference originated from a neighboring channel, in which the wireless transceiver operates on a target channel for data packet transmission, a difference between a central frequency of the neighboring channel and another central frequency of the target channel is less than a frequency difference threshold and/or an energy of an interference signal of the neighboring channel is greater than a signal energy threshold, the wireless transceiver comprising:a radio-frequency (RF) transceiver configured to transmit a first CTS-to-Self packet via the neighboring channel before the RF transceiver transmits a data packet via the target channel, in which a duration defined by a duration field of the first CTS-to-Self packet includes time for the RF transceiver finishing transmitting the data packet;
a frequency synthesizer configured to provide a carrier wave of the neighboring channel and other carrier wave of the target channel for the RF transceiver; and
an RF controller configured to control the frequency synthesizer to provide the carrier wave of the neighboring channel, and configured to control the frequency synthesizer to provide the other carrier wave of the target channel;
wherein the target channel is different from the neighboring channel, and the target channel and the neighboring channel have a same channel bandwidth; the RF transceiver is configured to transmit a second CTS-to-Self packet or an RTS (Request to Send) packet via the target channel before the RF transceiver transmits the data packet via the target channel; the RF transceiver is configured to transmit the second CTS-to-Self packet via the target channel with a step of transmitting a first packet and then transmitting a second packet, the first packet being one of the first CTS-to-Self packet and the second CTS-to-Self packet and the second packet being other one of the first CTS-to-Self packet and the second CTS-to-Self packet; when the RF transceiver is configured to transmit the first CTS-to-Self packet and then transmit the second CTS-to-Self packet in the step, the RF controller is configured to control the frequency synthesizer to provide the carrier wave of the neighboring channel for the RF transceiver and then control the frequency synthesizer to provide the carrier wave of the target channel for the RF transceiver; and when the RF transceiver is configured to transmit the second CTS-to-Self packet and then transmit the first CTS-to-Self packet in the step, the RF controller is configured to control the frequency synthesizer to provide the other carrier wave of the target channel for the RF transceiver and then control the frequency synthesizer to provide the carrier wave of the neighboring channel for the RF transceiver.