Granted Patent B2

US 12,745,243 · App. 18/526,094 · Granted Sep 22, 2026

Inventors: Rakesh Tamrakar (Dongguan, CN); Peng Sun (Dongguan, CN)

Assignee: VIVO MOBILE COMMUNICATION CO., LTD.

H04W72/1268H04L5/0051H04W72/232H04L5/0007

Abstract

Claims (85)

1 . An uplink data transmission method, wherein the method comprises:

in a case that user equipment (UE) is configured to transmit uplink data using a first waveform, receiving, by the UE, target downlink control information (DCI) from a network-side device, wherein the target DCI is used for scheduling target uplink data; and

in a case that indication information contained in the target DCI satisfies a first preset condition, transmitting, by the UE, the target uplink data using a second waveform; wherein the indication information is used to indicate a transmission parameter for the target uplink data;

wherein the indication information comprises a transmit precoding matrix indicator (TPMI) field; in a case that the first waveform is cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) and the second waveform is discrete fourier transform spread spectrum orthogonal frequency division multiplexing (DFT-S-OFDM), the indication information satisfying the first preset condition comprises: a rank corresponding to the TPMI field is less than or equal to a first threshold.

2 . The method according to claim 1 , wherein the indication information further comprises at least one of the following: a sounding reference signal resource indicator (SRI) field, a frequency domain resource allocation (FDRA) field, a modulation and coding scheme (MCS) index value, or a channel state information (CSI) request field.

3 . The method according to claim 2 , wherein, the indication information satisfying the first preset condition further comprises at least one of the following:

a rank corresponding to the SRI field is less than or equal to a second threshold;

physical resource blocks (PRBs) indicated by the FDRA field are contiguous;

the MCS index value is less than a third threshold;

the indication information does not contain the CSI request field; or

the indication information contains the CSI request field, and the CSI request field is not used to trigger the UE to send a CSI report.

4 . The method according to claim 1 , wherein the indication information further comprises a first demodulation reference signal (DMRS) indication information field, the first DMRS indication information field being used to indicate: a transmission port of a DMRS for use by the target uplink data, in a case of being configured to transmit the target uplink data using the first waveform;

before the transmitting, by the UE, the target uplink data using a second waveform, the method further comprises:

determining, by the UE, a target transmission port based on the first DMRS indication information field; and

the transmitting, by the UE, the target uplink data using a second waveform comprises:

transmitting, by the UE, the DMRS based on the target transmission port using the second waveform.

5 . The method according to claim 4 , wherein the first DMRS indication information field corresponds to X bits, X being determined based on a waveform with a larger number of states between the first waveform and the second waveform, and X being a positive integer; wherein

in a case that the number of states corresponding to the second waveform is less than the number of states corresponding to the first waveform, the target transmission port is a transmission port indicated by a target bit; and

in a case that the number of states corresponding to the second waveform is greater than the number of states corresponding to the first waveform, the target transmission port is a transmission port determined based on a state corresponding to the second waveform;

wherein the target bit is the first Y bits or the last Z bits, of the X bits, Y and Z both being positive integers.

6 . The method according to claim 4 , wherein the determining, by the UE, a target transmission port based on the first DMRS indication information field comprises:

determining, by the UE, an index value of a second DMRS indication information field based on an index value of the first DMRS indication information field and M first mappings, M being a positive integer; and

determining, by the UE, the target transmission port based on the index value of the second DMRS indication information field;

wherein each of the first mappings is a mapping between index values of different DMRS indication information fields corresponding to different waveforms; and

the second DMRS indication information field is used to indicate: a transmission port of a DMRS for use by the target uplink data, in a case of being configured to transmit the target uplink data using the second waveform.

7 . The method according to claim 1 , wherein the indication information comprises N pieces of sub-indication information, N being a positive integer; and

the transmitting, by the UE, the target uplink data using a second waveform comprises:

in a case that Q pieces of the N pieces of sub-indication information satisfy a second preset condition, transmitting, by the UE, the target uplink data using the second waveform based on other sub-indication information;

wherein the other sub-indication information is sub-indication information in the N pieces of sub-indication information other than the Q pieces of sub-indication information, Q being a positive integer.

8 . A user equipment (UE) comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, wherein the program or instructions, when executed by the processor, cause the processor to perform:

in a case that the UE is configured to transmit uplink data using a first waveform, receiving target downlink control information (DCI) from a network-side device, wherein the target DCI is used for scheduling target uplink data; and

in a case that indication information contained in the target DCI satisfies a first preset condition, transmitting the target uplink data using a second waveform; wherein

the indication information is used to indicate a transmission parameter for the target uplink data;

wherein the indication information comprises a transmit precoding matrix indicator (TPMI) field; in a case that the first waveform is cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) and the second waveform is discrete fourier transform spread spectrum orthogonal frequency division multiplexing (DFT-S-OFDM), the indication information satisfying the first preset condition comprises: a rank corresponding to the TPMI field is less than or equal to a first threshold.

9 . The user equipment according to claim 8 , wherein the indication information further comprises at least one of the following: a sounding reference signal resource indicator (SRI) field, a frequency domain resource allocation (FDRA) field, a modulation and coding scheme (MCS) index value, or a channel state information (CSI) request field.

10 . The user equipment according to claim 9 , wherein, the indication information satisfying the first preset condition further comprises at least one of the following:

a rank corresponding to the SRI field is less than or equal to a second threshold;

physical resource blocks (PRBs) indicated by the FDRA field are contiguous;

the MCS index value is less than a third threshold;

the indication information does not contain the CSI request field; or

the indication information contains the CSI request field, and the CSI request field is not used to trigger the UE to send a CSI report.

11 . The user equipment according to claim 9 , wherein the indication information further comprises a first demodulation reference signal (DMRS) indication information field, the first DMRS indication information field being used to indicate: a transmission port of a DMRS for use by the target uplink data, in a case of being configured to transmit the target uplink data using the first waveform;

the program or instructions, when executed by the processor, cause the processor to further perform:

determining a target transmission port based on the first DMRS indication information field; and

the transmitting the target uplink data using a second waveform comprises:

transmitting the DMRS based on the target transmission port using the second waveform.

12 . The user equipment according to claim 11 , wherein the first DMRS indication information field corresponds to X bits, X being determined based on a waveform with a larger number of states between the first waveform and the second waveform, and X being a positive integer; wherein

in a case that the number of states corresponding to the second waveform is less than the number of states corresponding to the first waveform, the target transmission port is a transmission port indicated by a target bit; and

in a case that the number of states corresponding to the second waveform is greater than the number of states corresponding to the first waveform, the target transmission port is a transmission port determined based on a state corresponding to the second waveform;

wherein the target bit is the first Y bits or the last Z bits, of the X bits, Y and Z both being positive integers.

13 . The user equipment according to claim 11 , wherein the determining a target transmission port based on the first DMRS indication information field comprises:

determining an index value of a second DMRS indication information field based on an index value of the first DMRS indication information field and M first mappings, M being a positive integer; and

determining the target transmission port based on the index value of the second DMRS indication information field;

wherein each of the first mappings is a mapping between index values of different DMRS indication information fields corresponding to different waveforms; and

the second DMRS indication information field is used to indicate: a transmission port of a DMRS for use by the target uplink data, in a case of being configured to transmit the target uplink data using the second waveform.

14 . The user equipment according to claim 8 , wherein the indication information comprises N pieces of sub-indication information, N being a positive integer; and

the transmitting the target uplink data using a second waveform comprises:

in a case that Q pieces of the N pieces of sub-indication information satisfy a second preset condition, transmitting the target uplink data using the second waveform based on other sub-indication information;

wherein the other sub-indication information is sub-indication information in the N pieces of sub-indication information other than the Q pieces of sub-indication information, Q being a positive integer.

15 . A non-transitory readable storage medium, wherein the readable storage medium stores a program or instructions, and the program or instructions, when executed by a processor of a user equipment (UE), cause the UE to perform:

in a case that the UE is configured to transmit uplink data using a first waveform, receiving target downlink control information (DCI) from a network-side device, wherein the target DCI is used for scheduling target uplink data; and

in a case that indication information contained in the target DCI satisfies a first preset condition, transmitting the target uplink data using a second waveform; wherein

the indication information is used to indicate a transmission parameter for the target uplink data;

wherein the indication information comprises a transmit precoding matrix indicator (TPMI) field; in a case that the first waveform is cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) and the second waveform is discrete fourier transform spread spectrum orthogonal frequency division multiplexing (DFT-S-OFDM), the indication information satisfying the first preset condition comprises: a rank corresponding to the TPMI field is less than or equal to a first threshold.

16 . The non-transitory readable storage medium according to claim 15 , wherein the indication information further comprises at least one of the following: a sounding reference signal resource indicator (SRI) field, a frequency domain resource allocation (FDRA) field, a modulation and coding scheme (MCS) index value, or a channel state information (CSI) request field.

17 . The non-transitory readable storage medium according to claim 16 , wherein, the indication information satisfying the first preset condition further comprises at least one of the following:

a rank corresponding to the SRI field is less than or equal to a second threshold;

physical resource blocks (PRBs) indicated by the FDRA field are contiguous;

the MCS index value is less than a third threshold;

the indication information does not contain the CSI request field; or

the indication information contains the CSI request field, and the CSI request field is not used to trigger the UE to send a CSI report.

18 . The non-transitory readable storage medium according to claim 16 , wherein the indication information further comprises a first demodulation reference signal (DMRS) indication information field, the first DMRS indication information field being used to indicate: a transmission port of a DMRS for use by the target uplink data, in a case of being configured to transmit the target uplink data using the first waveform;

the program or instructions, when executed by the processor, cause the processor to further perform:

determining a target transmission port based on the first DMRS indication information field; and

the transmitting the target uplink data using a second waveform comprises:

transmitting the DMRS based on the target transmission port using the second waveform.

19 . The non-transitory readable storage medium according to claim 18 , wherein the first DMRS indication information field corresponds to X bits, X being determined based on a waveform with a larger number of states between the first waveform and the second waveform, and X being a positive integer; wherein

in a case that the number of states corresponding to the second waveform is less than the number of states corresponding to the first waveform, the target transmission port is a transmission port indicated by a target bit; and

in a case that the number of states corresponding to the second waveform is greater than the number of states corresponding to the first waveform, the target transmission port is a transmission port determined based on a state corresponding to the second waveform;

wherein the target bit is the first Y bits or the last Z bits, of the X bits, Y and Z both being positive integers.

20 . The non-transitory readable storage medium according to claim 18 , wherein the determining a target transmission port based on the first DMRS indication information field comprises:

determining an index value of a second DMRS indication information field based on an index value of the first DMRS indication information field and M first mappings, M being a positive integer; and

determining the target transmission port based on the index value of the second DMRS indication information field;

wherein each of the first mappings is a mapping between index values of different DMRS indication information fields corresponding to different waveforms; and

the second DMRS indication information field is used to indicate: a transmission port of a DMRS for use by the target uplink data, in a case of being configured to transmit the target uplink data using the second waveform.

Assignments (2)

Priority Claims (1)

Continuity (2)

References Cited (15)