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US 11,240,793 B2Granted
Control information obtaining method and apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsFengwei Liu, Lei Chen
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to control information sending methods in a wireless communications system. In one example waveform control information sending method, a network device obtains control information that includes uplink transmission waveform indication information, and sends the control information to a terminal. After receiving the control information, the terminal determines, based on the control information, a waveform used to send uplink data.
Claims24
A control information sending method, wherein the method comprises:
- generating, by a network device, control information, wherein the control information is downlink control information (DCI), wherein a DCI format of the DCI is selected from a plurality of DCI formats and is used to indicate an uplink transmission waveform of a terminal of two uplink transmission waveforms, wherein the two uplink transmission waveforms are an orthogonal frequency division multiplexing (OFDM) waveform and a discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-S-OFDM) waveform, wherein a length of the DCI is used to indicate the uplink transmission waveform of the terminal, and wherein a waveform that needs to be used for uplink transmission is determined based on a matching of the length of the DCI and a length of a known DCI format;
- and
- sending, by the network device, the control information to the terminal.
A control information sending method, wherein the method comprises:
- receiving, by a terminal, control information sent by a network device, wherein the control information is downlink control information (DCI), wherein a DCI format of the DCI is selected from a plurality of DCI formats and is used to indicate an uplink transmission waveform of the terminal of two uplink transmission waveform, wherein the two uplink transmission waveforms are an orthogonal frequency division multiplexing (OFDM) waveform and a discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-S-OFDM) waveform, wherein a length of the DCI is used to indicate the uplink transmission waveform of the terminal, and wherein the terminal matches the length of the DCI and a length of a known DCI format to determine a waveform that needs to be used for uplink transmission;
- and
- sending, by the terminal, uplink data based on the uplink transmission waveform indicated by the DCI format.
A network device, wherein the network device comprises:
- at least one processor;
- one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to generate control information, wherein the control information is downlink control information (DCI), wherein a DCI format of the DCI is selected from a plurality of DCI formats and is used to indicate an uplink transmission waveform of a terminal of two uplink transmission waveforms, and wherein the two uplink transmission waveforms are an orthogonal frequency division multiplexing (OFDM) waveform and a discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-S-OFDM) waveform, wherein a length of the DCI is used to indicate the uplink transmission waveform of the terminal, and wherein a waveform that needs to be used for uplink transmission is determined based on a matching of the length of the DCI and a length of a known DCI format;
- and
- a transmitter, the transmitter is configured to send the control information to the terminal.
1 more element
A terminal, wherein the terminal comprises:
- a receiver, the receiver is configured to receive control information sent by a network device, wherein the control information is downlink control information (DCI), wherein a DCI format of the DCI is selected from a plurality of DCI formats and is used to indicate an uplink transmission waveform of the terminal of two uplink transmission waveforms, wherein the two uplink transmission waveforms are an orthogonal frequency division multiplexing (OFDM) waveform and a discrete Fourier transform-spread orthogonal frequency division multiplexing (DFT-S-OFDM) waveform, wherein a length of the DCI is used to indicate the uplink transmission waveform of the terminal, and wherein the terminal matches the length of the DCI and a length of a known DCI format to determine a waveform that needs to be used for uplink transmission;
- at least one processor;
- and
- one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to send uplink data based on the uplink transmission waveform indicated by the DCI format.
1 more element
Dependencies are inferred from the claim text.