초록 ▼

Full-duplex wireless communication is described. In an embodiment, a transceiver device having a transmitter circuit and a receiver circuit receives a data packet sent over a shared communication medium. In the embodiment, the transceiver reads the header of the data packet and starts transmitting a

Full-duplex wireless communication is described. In an embodiment, a transceiver device having a transmitter circuit and a receiver circuit receives a data packet sent over a shared communication medium. In the embodiment, the transceiver reads the header of the data packet and starts transmitting an output signal on the same shared communication medium. Embodiments are described in which, whilst the transmission of the output signal is ongoing, the transceiver receives an impaired data signal which is made up of the payload of the data packet and interference from the output signal. In the embodiment, a cancellation signal is derived from the output signal, and this is combined with the impaired data signal to remove the interference and recover the payload of the data packet.

대표청구항 ▼

The invention claimed is: 1. A method of accessing a shared communication medium with a transceiver device having a transmitter circuit and a receiver circuit, comprising:receiving a data packet header on the shared communication medium at the receiver circuit;responsive to receiving the data packet

The invention claimed is: 1. A method of accessing a shared communication medium with a transceiver device having a transmitter circuit and a receiver circuit, comprising:receiving a data packet header on the shared communication medium at the receiver circuit;responsive to receiving the data packet header determining if a further data packet is waiting to be sent, wherein:if a further data packet is not waiting to be sent then transmitting a busy tone, andif a further data packet is waiting to be sent then selecting a recipient for the further data packet and initiating transmission of an output signal comprising the further data packet from the transmitter circuit on the shared communication medium;concurrently with the transmission of the output signal from the transmitter circuit on the shared communication medium, receiving an impaired data signal at the receiver circuit on the shared communication medium, wherein the impaired data signal comprises a data packet payload and interference from the output signal;deriving a cancellation signal from the output signal;combining the cancellation signal with the impaired data signal to remove the output signal and recover the data packet payload; anddetermining if the data packet payload is still being received and in the case that the data packet payload is still being received, completing the transmission of the further data packet and then transmitting a predefined sequence of symbols, and in the case that the data packet payload has been fully received, transmitting an acknowledgement packet.