Wireless communications method and system, and full-duplex wireless transceiver
First Claim
1. A full-duplex wireless transceiver, comprising:
- a memory to store instructions; and
a processor to execute the instructions to configure the full-duplex wireless transceiver to implement;
a sending module, a receiving module, a cancellation signal generation module, and a channel estimation module, wherein the cancellation signal generation module comprises several adjustment submodules, an output end of the sending module is connected to an input end of the cancellation signal generation module and a transmit antenna, an output end of the cancellation signal generation module is connected to a first input end of the receiving module, a second input end of the receiving module is connected to a receive antenna, a control end of the cancellation signal generation module is connected to an output end of the channel estimation module, a first input end of the channel estimation module is connected to an output end of the receiving module, and a second input end of the channel estimation module is connected to an input end of the sending module, wherein;
the channel estimation module is configured to compute a channel characteristic of a wireless self-interference channel between the transmit antenna and the receive antenna, generate a control signal according to the channel characteristic, and output the control signal to the adjustment submodule;
the sending module is configured to modulate an input transmit digital signal into a first radio frequency signal, and output the first radio frequency signal to the adjustment submodule and the transmit antenna;
the adjustment submodule is configured to receive the first radio frequency signal and the control signal and perform, under control of the control signal, phase adjustment and amplitude adjustment on the first radio frequency signal, and obtain a cancellation signal;
the adjustment submodule is further configured to output the cancellation signal to the receiving module;
the receiving module is configured to receive the cancellation signal and receive a second radio frequency signal from a radio air interface, and perform self-interference cancellation on the second radio frequency signal and the cancellation signal so as to generate a third radio frequency signal obtained after self-interference cancellation; and
the receiving module is further configured to demodulate the third radio frequency signal into a receive digital signal, whereinthe adjustment submodule that is configured to perform phase adjustment and amplitude adjustment on the first radio frequency signal comprises;
a first vector modulator,a first numerical control delay line and a first numerical control attenuator, orthe first vector modulator, the first numerical control delay line, and the first numerical control attenuator.
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Accused Products
Abstract
Embodiments of the present invention disclose a wireless communications method and system, and a full-duplex wireless transceiver, where the method includes: modulating a transmit digital signal into a first radio frequency signal and outputting the first radio frequency signal to a transmit antenna; then performing, under control of a pre-generated control signal, phase adjustment and amplitude adjustment on the first radio frequency signal and obtaining a cancellation signal; performing self-interference cancellation on a second radio frequency signal received from a radio air interface by using a receive antenna and the cancellation signal so as to generate a third radio frequency signal obtained after self-interference cancellation; and finally demodulating the third radio frequency signal into a receive digital signal.
17 Citations
17 Claims
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1. A full-duplex wireless transceiver, comprising:
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a memory to store instructions; and a processor to execute the instructions to configure the full-duplex wireless transceiver to implement; a sending module, a receiving module, a cancellation signal generation module, and a channel estimation module, wherein the cancellation signal generation module comprises several adjustment submodules, an output end of the sending module is connected to an input end of the cancellation signal generation module and a transmit antenna, an output end of the cancellation signal generation module is connected to a first input end of the receiving module, a second input end of the receiving module is connected to a receive antenna, a control end of the cancellation signal generation module is connected to an output end of the channel estimation module, a first input end of the channel estimation module is connected to an output end of the receiving module, and a second input end of the channel estimation module is connected to an input end of the sending module, wherein; the channel estimation module is configured to compute a channel characteristic of a wireless self-interference channel between the transmit antenna and the receive antenna, generate a control signal according to the channel characteristic, and output the control signal to the adjustment submodule; the sending module is configured to modulate an input transmit digital signal into a first radio frequency signal, and output the first radio frequency signal to the adjustment submodule and the transmit antenna; the adjustment submodule is configured to receive the first radio frequency signal and the control signal and perform, under control of the control signal, phase adjustment and amplitude adjustment on the first radio frequency signal, and obtain a cancellation signal; the adjustment submodule is further configured to output the cancellation signal to the receiving module; the receiving module is configured to receive the cancellation signal and receive a second radio frequency signal from a radio air interface, and perform self-interference cancellation on the second radio frequency signal and the cancellation signal so as to generate a third radio frequency signal obtained after self-interference cancellation; and the receiving module is further configured to demodulate the third radio frequency signal into a receive digital signal, wherein the adjustment submodule that is configured to perform phase adjustment and amplitude adjustment on the first radio frequency signal comprises; a first vector modulator, a first numerical control delay line and a first numerical control attenuator, or the first vector modulator, the first numerical control delay line, and the first numerical control attenuator. - View Dependent Claims (2, 3)
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4. A full-duplex wireless transceiver, comprising:
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a memory to store instructions; and a processor to execute the instructions to configure the full-duplex wireless transceiver to implement; a sending module, a receiving module, a cancellation signal generation module, and a channel estimation module, wherein the cancellation signal generation module comprises several adjustment submodules, an output end of the sending module is connected to an input end of the cancellation signal generation module and a transmit antenna, an output end of the cancellation signal generation module is connected to a first input end of the receiving module, a second input end of the receiving module is connected to a receive antenna, a control end of the cancellation signal generation module is connected to an output end of the channel estimation module, a first input end of the channel estimation module is connected to an output end of the receiving module, and a second input end of the channel estimation module is connected to an input end of the sending module, wherein; the channel estimation module is configured to compute a channel characteristic of a wireless self-interference channel between the transmit antenna and the receive antenna, generate a control signal according to the channel characteristic, and output the control signal to the adjustment submodule; the sending module is configured to modulate an input transmit digital signal into a first radio frequency signal, and output the first radio frequency signal to the adjustment submodule and the transmit antenna; the adjustment submodule is configured to receive the first radio frequency signal and the control signal and perform, under control of the control signal, phase adjustment and amplitude adjustment on the first radio frequency signal, and obtain a cancellation signal; the adjustment submodule is further configured to output the cancellation signal to the receiving module; the receiving module is configured to receive the cancellation signal and receive a second radio frequency signal from a radio air interface, and perform self-interference cancellation on the second radio frequency signal and the cancellation signal so as to generate a third radio frequency signal obtained after self-interference cancellation; and the receiving module is further configured to demodulate the third radio frequency signal into a receive digital signal, wherein at least one of the adjustment submodules in the several adjustment submodules is further configured to perform delay adjustment on the first radio frequency signal, wherein the adjustment submodule that is configured to perform phase adjustment, amplitude adjustment, and delay adjustment on the first radio frequency signal comprises; a second vector modulator and a second numerical control delay line, a third numerical control delay line, a second numerical control attenuator, and a fourth numerical control delay line, or the second vector modulator, the second numerical control delay line, the third numerical control delay line, the second numerical control attenuator, and the fourth numerical control delay line. - View Dependent Claims (5, 6, 7, 8)
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9. A full-duplex wireless transceiver, comprising:
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a memory to store instructions; and a processor to execute the instructions to configure the full-duplex wireless transceiver to implement; a sending module, a receiving module, a cancellation signal generation module, and a channel estimation module, wherein the cancellation signal generation module comprises several adjustment submodules, an output end of the sending module is connected to an input end of the cancellation signal generation module and a transmit antenna, an output end of the cancellation signal generation module is connected to a first input end of the receiving module, a second input end of the receiving module is connected to a receive antenna, a control end of the cancellation signal generation module is connected to an output end of the channel estimation module, a first input end of the channel estimation module is connected to an output end of the receiving module, and a second input end of the channel estimation module is connected to an input end of the sending module, wherein; the channel estimation module is configured to compute a channel characteristic of a wireless self-interference channel between the transmit antenna and the receive antenna, generate a control signal according to the channel characteristic, and output the control signal to the adjustment submodule; the sending module is configured to modulate an input transmit digital signal into a first radio frequency signal, and output the first radio frequency signal to the adjustment submodule and the transmit antenna; the adjustment submodule is configured to receive the first radio frequency signal and the control signal and perform, under control of the control signal, phase adjustment and amplitude adjustment on the first radio frequency signal, and obtain a cancellation signal; the adjustment submodule is further configured to output the cancellation signal to the receiving module; the receiving module is configured to receive the cancellation signal and receive a second radio frequency signal from a radio air interface, and perform self-interference cancellation on the second radio frequency signal and the cancellation signal so as to generate a third radio frequency signal obtained after self-interference cancellation; and the receiving module is further configured to demodulate the third radio frequency signal into a receive digital signal, wherein the cancellation signal generation module further comprises a switch control submodule and switch submodules that are in a one-to-one correspondence with the several adjustment submodules, wherein; the switch submodule is configured to control a work status of the adjustment submodule between a pair of the first radio frequency signal and the second radio frequency signal, wherein the adjustment submodule is corresponding to the switch submodule, and the work status comprises a connected state or a non-connected state; and the switch control submodule is configured to determine a quantity of adjustment submodules in the connected state in the several adjustment submodules by using a predefined criterion. - View Dependent Claims (10)
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11. A full-duplex wireless transceiver, comprising:
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a memory to store a group of program code; and a processor configured to invoke the program code stored in the memory to configure the full-duplex wireless transceiver to perform the following operations; modulating a transmit digital signal into a first radio frequency signal, and outputting the first radio frequency signal to a transmit antenna; performing, under control of a pre-generated control signal, phase adjustment and amplitude adjustment on the first radio frequency signal, and obtaining a cancellation signal; and performing self-interference cancellation on a second radio frequency signal received from a radio air interface by using a receive antenna and the cancellation signal so as to generate a third radio frequency signal obtained after self-interference cancellation, performing self-interference cancellation on the third radio frequency signal in a digital domain, and demodulating the third radio frequency signal obtained after self-interference cancellation in the digital domain into a receive digital signal. - View Dependent Claims (12, 13)
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14. A wireless communications system, comprising:
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a terminal; a base station; and a full-duplex wireless transceiver, comprising; a memory to store instructions; and a processor to execute the instructions to configure the full-duplex wireless transceiver to implement; a sending module, a receiving module, a cancellation signal generation module, and a channel estimation module, wherein the cancellation signal generation module comprises several adjustment submodules, an output end of the sending module is connected to an input end of the cancellation signal generation module and a transmit antenna, an output end of the cancellation signal generation module is connected to a first input end of the receiving module, a second input end of the receiving module is connected to a receive antenna, a control end of the cancellation signal generation module is connected to an output end of the channel estimation module, a first input end of the channel estimation module is connected to an output end of the receiving module, and a second input end of the channel estimation module is connected to an input end of the sending module, wherein; the channel estimation module is configured to compute a channel characteristic of a wireless self-interference channel between the transmit antenna and the receive antenna, generate a control signal according to the channel characteristic, and output the control signal to the adjustment submodule; the sending module is configured to modulate an input transmit digital signal into a first radio frequency signal, and output the first radio frequency signal to the adjustment submodule and the transmit antenna; the adjustment submodule is configured to receive the first radio frequency signal and the control signal and perform, under control of the control signal, phase adjustment and amplitude adjustment on the first radio frequency signal, and obtain a cancellation signal; the adjustment submodule is further configured to output the cancellation signal to the receiving module; the receiving module is configured to receive the cancellation signal and receive a second radio frequency signal from a radio air interface, and perform self-interference cancellation on the second radio frequency signal and the cancellation signal so as to generate a third radio frequency signal obtained after self-interference cancellation; and the receiving module is further configured to demodulate the third radio frequency signal into a receive digital signal, wherein the cancellation signal generation module further comprises a switch control submodule and switch submodules that are in a one-to-one correspondence with the several adjustment submodules, wherein; the switch submodule is configured to control a work status of the adjustment submodule between a pair of the first radio frequency signal and the second radio frequency signal, wherein the adjustment submodule is corresponding to the switch submodule, and the work status comprises a connected state or a non-connected state; and the switch control submodule is configured to determine a quantity of adjustment submodules in the connected state in the several adjustment submodules by using a predefined criterion, wherein; the terminal supports a full-duplex communication mode, the base station supports a half-duplex communication mode, and the terminal comprises the full-duplex wireless transceiver;
orthe terminal supports a full-duplex communication mode, the base station supports a full-duplex communication mode, the terminal comprises the full-duplex wireless transceiver, and the base station comprises the full-duplex wireless transceiver;
orthe terminal supports a half-duplex communication mode, the base station supports a full-duplex communication mode, and the base station comprises the full-duplex wireless transceiver.
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15. A wireless communication method, comprising:
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modulating a transmit digital signal into a first radio frequency signal, and outputting the first radio frequency signal to a transmit antenna; performing, under control of a pre-generated control signal, phase adjustment and amplitude adjustment on the first radio frequency signal, and obtaining a cancellation signal; and performing self-interference cancellation on a second radio frequency signal received from a radio air interface by using a receive antenna and the cancellation signal so as to generate a third radio frequency signal obtained after self-interference cancellation, performing self-interference cancellation on the third radio frequency signal in a digital domain, and demodulating the third radio frequency signal obtained after self-interference cancellation in the digital domain into a receive digital signal. - View Dependent Claims (16, 17)
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Specification