METHOD AND DEVICE FOR REMOVING SELF-INTERFERENCE SIGNAL IN ENVIRONMENT USING FDR MODE
First Claim
1. A method for performing self-interference signal cancellation by a device supporting a full duplex communication (FDR) mode, the method comprising:
- transmitting a signal to a target node in a predetermined time interval;
generating and storing a residual self-interference signal after cancelling an analog self-interference signal with respect to the signal at a radio frequency (RF) end of the device;
receiving a negative-acknowledgement (NACK) signal from the target node in response to the transmitted signal;
retransmitting the signal to the target node; and
when a signal received in the predetermined time interval is successfully decoded, using only a portion of the stored residual self-interference signal in cancelling a digital self-interference signal associated with the retransmission.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for removing a self-interference signal by a device supporting an FDR mode can further comprise the steps of: transmitting a signal to a counterpart node in a predetermined time interval; generating, in an RF stage of the device, a residual self-interference signal after removal of an analog self-interference signal with respect to the signal and then storing same; and receiving from the counterpart node a NACK signal with respect to the transmission of the signal; retransmitting the signal to the counterpart node; and, if decoding of the signal which has been received in the predetermined time interval is successful, using only a part of the stored residual self-interference signal when removing a digital self-interference signal on the basis of the retransmission.
-
Citations
12 Claims
-
1. A method for performing self-interference signal cancellation by a device supporting a full duplex communication (FDR) mode, the method comprising:
-
transmitting a signal to a target node in a predetermined time interval; generating and storing a residual self-interference signal after cancelling an analog self-interference signal with respect to the signal at a radio frequency (RF) end of the device; receiving a negative-acknowledgement (NACK) signal from the target node in response to the transmitted signal; retransmitting the signal to the target node; and when a signal received in the predetermined time interval is successfully decoded, using only a portion of the stored residual self-interference signal in cancelling a digital self-interference signal associated with the retransmission. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A device for performing self-interference signal cancellation, the device supporting a full duplex communication (FDR) mode, the device comprising:
-
a transmitter configured to transmit a signal to a target node in a predetermined time interval; a radio frequency (RF) unit configured to generate and store a residual self-interference signal after cancelling an analog self-interference signal with respect to the signal at an RF end of the device; and a receiver configured to receive a negative-acknowledgement (NACK) signal from the target node in response to the transmitted signal, wherein the transmitter is configured to retransmit the signal to the target node, and wherein when a signal received in the predetermined time interval is successfully decoded, the RF unit is configured to use only a portion of the stored residual self-interference signal in cancelling a digital self-interference signal associated with the retransmission. - View Dependent Claims (8, 9, 10, 11, 12)
-
Specification