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US 12,744,615 B2Granted
Wireless communication method, terminal device and network device
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorsZhisong Zuo, Weijie Xu, Shengjiang Cui
Life of this patent
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Abstract
A method for wireless communication includes: a triggering signal transmitted by a network device is received; and a back scattering signal is transmitted to the network device, where the back scattering signal is a signal formed by reflecting and modulating a power supply signal transmitted by a power supply node in a manner of Code Division Multiplexing (CDM).
Claims16
A method for wireless communication, comprising:
- receiving a triggering signal transmitted by a network device;
- and
- transmitting a back scattering signal to the network device,
- wherein the back scattering signal is a signal formed by reflecting and modulating a power supply signal transmitted by a power supply node in a manner of Code Division Multiplexing (CDM);
- wherein the method further comprises:
- acquiring a first base sequence for a terminal device from a plurality of base sequences, wherein the plurality of base sequences are respectively used for distinguishing a plurality of terminal devices, and the plurality of terminal devices comprise the terminal device;
- and
- performing reflection and spread-spectrum on the power supply signal in the manner of CDM based on the first base sequence, to obtain the back scattering signal, or performing spread-spectrum on a modulation signal in the manner of CDM based on the first base sequence to obtain the back scattering signal, wherein the modulation signal is a signal formed by reflecting and modulating the power supply signal based on information to be transmitted of the terminal device;
- wherein acquiring the first base sequence for the terminal device from the plurality of base sequences comprises:
- determining the first base sequence from the plurality of base sequences according to all or part of information pre-stored in the terminal device and a number of terminal devices communicating in the manner of CDM,
- wherein determining the first base sequence from the plurality of base sequences according to the all or part of the information pre-stored in the terminal device and the number of terminal devices communicating in the manner of CDM comprises:
- determining the first base sequence according to following formula:
- C=m mod k:
- where C is used to represent the first base sequence, m is used to represent the all or part of the information pre-stored in the terminal device, k is used to represent the number of terminal devices communicating in the manner of CDM, and mod is used to represent an modulo division operation,
- wherein the information pre-stored in the terminal device comprises an identification of the terminal device.
12 more elements
A method for wireless communication, comprising:
- transmitting a triggering signal to a terminal device;
- and
- receiving a back scattering signal transmitted by the terminal device;
- wherein the back scattering signal is a signal formed by reflecting and modulating a power supply signal transmitted by a power supply node in a manner of Code Division Multiplexing (CDM);
- wherein the method further comprises:
- acquiring a first base sequence for the terminal device from a plurality of base sequences, wherein the plurality of base sequences are respectively used for distinguishing a plurality of terminal devices, and the plurality of terminal devices comprise the terminal device;
- and
- demodulating the back scattering signal in the manner of CDM based on the first base sequence, to obtain a demodulated signal;
- wherein acquiring the first base sequence for the terminal device from the plurality of base sequences comprises:
- determining the first base sequence from the plurality of base sequences according to all or part of information pre-stored in the terminal device and a number of terminal devices communicating in the manner of CDM,
- wherein determining the first base sequence from the plurality of base sequences according to the all or part of the information pre-stored in the terminal device and the number of terminal devices communicating in the manner of CDM comprises:
- determining the first base sequence according to following formula:
- C=m mod k;
- where C is used to represent the first base sequence, m is used to represent the all or part of the information pre-stored in the terminal device, k is used to represent the number of terminal devices communicating in the manner of CDM, and mod is used to represent an modulo division operation,
- wherein the information pre-stored in the terminal device comprises an identification of the terminal device.
12 more elements
A terminal device, comprising:
- a processor;
- a memory for storing a computer program executable by the processor;
- and
- a transceiver, configured to:
- receive a triggering signal transmitted by a network device;
- and
- transmit a back scattering signal to the network device, wherein the back scattering signal is a signal formed by reflecting and modulating a power supply signal transmitted by a power supply node in a manner of Code Division Multiplexing (CDM);
- wherein the processor is configured to:
- acquire a first base sequence for a terminal device from a plurality of base sequences, wherein the plurality of base sequences are respectively used for distinguishing a plurality of terminal devices, and the plurality of terminal devices comprise the terminal device;
- and
- perform reflection and spread-spectrum on the power supply signal in the manner of CDM based on the first base sequence, to obtain the back scattering signal, or perform spread-spectrum on a modulation signal in the manner of CDM based on the first base sequence, to obtain the back scattering signal, wherein the modulation signal is a signal formed by reflecting and modulating the power supply signal based on information to be transmitted of the terminal device;
- wherein in acquiring the first base sequence for the terminal device from the plurality of base sequences, the processor is specifically configured to:
- determine the first base sequence from the plurality of base sequences according to all or part of information pre-stored in the terminal device and a number of terminal devices communicating in the manner of CDM,
- wherein in determining the first base sequence from the plurality of base sequences according to the all or part of the information pre-stored in the terminal device and the number of terminal devices communicating in the manner of CDM, the processor is specifically configured to:
- determine the first base sequence according to following formula:
- C=m mod k;
- where C is used to represent the first base sequence, m is used to represent the all or part of the information pre-stored in the terminal device, k is used to represent the number of terminal devices communicating in the manner of CDM, and mod is used to represent an modulo division operation,
- wherein the information pre-stored in the terminal device comprises an identification of the terminal device.
15 more elements
A network device, comprising:
- a processor;
- a memory for storing a computer program executable by the processor;
- and
- a transceiver, configured to:
- transmit a triggering signal to a terminal device;
- and
- receive a back scattering signal transmitted by the terminal device,
- wherein the back scattering signal is a signal formed by reflecting and modulating a power supply signal transmitted by a power supply node in a manner of Code Division Multiplexing (CDM);
- wherein the processor is configured to:
- acquire a first base sequence for the terminal device from a plurality of base sequences, wherein the plurality of base sequences are respectively used for distinguishing a plurality of terminal devices, and the plurality of terminal devices comprise the terminal device;
- and
- demodulate the back scattering signal in the manner of CDM based on the first base sequence, to obtain a demodulated signal:
- wherein in acquiring the first base sequence for the terminal device from the plurality of base sequences, the processor is specifically configured to:
- determine the first base sequence from the plurality of base sequences according to all or part of information pre-stored in the terminal device and a number of terminal devices communicating in the manner of CDM,
- wherein in determining the first base sequence from the plurality of base sequences according to the all or part of the information pre-stored in the terminal device and the number of terminal devices communicating in the manner of CDM, the processor is specifically configured to:
- determine the first base sequence according to following formula:
- C=m mod k;
- where C is used to represent the first base sequence, m is used to represent the all or part of the information pre-stored in the terminal device, k is used to represent the number of terminal devices communicating in the manner of CDM, and mod is used to represent an modulo division operation,
- wherein the information pre-stored in the terminal device comprises an identification of the terminal device.
16 more elements
Dependencies are inferred from the claim text.