Method for reducing self-interference signal in communications system, and apparatus
First Claim
1. An apparatus, wherein the apparatus comprises:
- a sending unit, configured to send a sounding signal and a first communication signal, wherein the sounding signal is superimposed on the first communication signal during the sending of the sounding signal, a power used to send the sounding signal is less than a power used to send the first communication signal, wherein the sending unit is configured to send the sounding signal in a transmit timeslot, the transmit timeslot being comprised in a sounding timeslot, and the sending unit is configured to stop sending the sounding signal in an idle timeslot, the idle timeslot being comprised in the sounding timeslot, and wherein the idle timeslot comprises a first silent timeslot and a second silent timeslot;
a receiving unit, configured to receive an input signal, wherein the input signal comprises an echo signal and a second communication signal sent by another apparatus, and the echo signal comprises a near-field reflected signal corresponding to the sounding signal;
a signal separation unit, configured to separate the near-field reflected signal from the echo signal;
a processing unit, configured to determine a near-field reflection channel parameter according to the near-field reflected signal; and
a cancellation unit, configured to determine a reconstructed near-field reflected self-interference signal based on the near-field reflection channel parameter, and subtract the reconstructed near-field reflected self-interference signal from the second communication signal.
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Accused Products
Abstract
Embodiments provide a method for reducing a self-interference signal in a communications system, and an apparatus. The method includes: sending a sounding signal; receiving an echo signal, where the echo signal includes a near-field reflected signal corresponding to the sounding signal. The method also includes separating the near-field reflected signal corresponding to the sounding signal from the echo signal, and determining a near-field reflection channel parameter according to the near-field reflected signal. The method also includes determining a reconstructed near-field reflected self-interference signal based on the near-field reflection channel parameter, and subtracting the reconstructed near-field reflected self-interference signal from a received second communication signal.
15 Citations
17 Claims
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1. An apparatus, wherein the apparatus comprises:
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a sending unit, configured to send a sounding signal and a first communication signal, wherein the sounding signal is superimposed on the first communication signal during the sending of the sounding signal, a power used to send the sounding signal is less than a power used to send the first communication signal, wherein the sending unit is configured to send the sounding signal in a transmit timeslot, the transmit timeslot being comprised in a sounding timeslot, and the sending unit is configured to stop sending the sounding signal in an idle timeslot, the idle timeslot being comprised in the sounding timeslot, and wherein the idle timeslot comprises a first silent timeslot and a second silent timeslot; a receiving unit, configured to receive an input signal, wherein the input signal comprises an echo signal and a second communication signal sent by another apparatus, and the echo signal comprises a near-field reflected signal corresponding to the sounding signal; a signal separation unit, configured to separate the near-field reflected signal from the echo signal; a processing unit, configured to determine a near-field reflection channel parameter according to the near-field reflected signal; and a cancellation unit, configured to determine a reconstructed near-field reflected self-interference signal based on the near-field reflection channel parameter, and subtract the reconstructed near-field reflected self-interference signal from the second communication signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus, wherein the apparatus comprises:
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a transmit antenna, configured to send a sounding signal and a first communication signal, wherein the sounding signal is superimposed on the first communication signal during the sending of the sounding signal, and a power used to send the sounding signal is less than a power used to send the first communication signal, wherein the transmit antenna is configured to send the sounding signal in a transmit timeslot, the transmit timeslot being comprised in a sounding timeslot, and the transmit antenna is configured to stop sending the sounding signal in an idle timeslot, the idle timeslot being comprised in the sounding timeslot, wherein the idle timeslot comprises a first silent timeslot and a second silent timeslot; a receive antenna, configured to receive an echo signal, wherein the echo signal comprises a near-field reflected signal corresponding to the sounding signal; a signal separator, configured to separate the near-field reflected signal from the echo signal; a processor, configured to determine a near-field reflection channel parameter according to the near-field reflected signal; and a canceller, configured to determine a reconstructed near-field reflected self-interference signal based on the near-field reflection channel parameter, and subtract the reconstructed near-field reflected self-interference signal from a second communication signal. - View Dependent Claims (10, 11, 12)
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13. A method, comprising:
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sending, by an apparatus, a sounding signal and a first communication signal, wherein the sounding signal is superimposed on the first communication signal during the sending of the sounding signal, and a power used to send the sounding signal is less than a power used to send the first communication signal, wherein the apparatus supports wireless full duplex, and wherein sending the sounding signal comprises; transmitting the sounding signal in a transmit timeslot, the transmit timeslot being comprised in a sounding timeslot; and stopping transmitting the sounding signal in an idle timeslot, the idle timeslot being comprised in the sounding timeslot, wherein the idle timeslot comprises a first silent timeslot and a second silent timeslot; receiving, by the apparatus, an input signal, wherein the input signal comprises an echo signal and a second communication signal received from another apparatus, and the echo signal comprises a near-field reflected signal corresponding to the sounding signal; separating, by the apparatus, the near-field reflected signal from the echo signal; determining, by the apparatus, a near-field reflection channel parameter according to the near-field reflected signal; and determining, by the apparatus, a reconstructed near-field reflected self-interference signal based on the near-field reflection channel parameter, and subtracting the reconstructed near-field reflected self-interference signal from the second communication signal. - View Dependent Claims (14, 15, 16, 17)
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Specification