Uplink precoding method, device and system
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorWenhong Chen
Life of this patent
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Abstract
Disclosed are an uplink precoding method, device and system. A terminal device transmits an SRS on at least one SRS resource, and receives DCI used by a network side to schedule uplink data transmission, the DCI comprising RI and/or SRI, then determines a precoding approach for the uplink data according to the RI and/or SRI and at least one SRS resource, precodes the uplink data according to the precoding approach, and transmits the precoded uplink data. By applying the solution of the present invention, signaling overhead can be reduced.
Claims14
An uplink pre-coding method, comprising:
- transmitting, by a terminal device, a sounding reference signal (SRS) on at least one SRS resource;
- receiving, by the terminal device, downlink control information (DCI) for scheduling uplink data transmission from a network side, wherein the DCI comprises an SRS resource indication (SRI);
- determining, by the terminal device, a pre-coding scheme for uplink data according to the at least one SRS resource and the SRI;
- pre-coding, by the terminal device, the uplink data according to the pre-coding scheme;
- and
- sending, by the terminal device, the pre-coded uplink data;
- wherein determining, by the terminal device, the pre-coding scheme for the uplink data according to the at least one SRS resource and the SRI comprises:
- determining one or more target SRS resources from the at least one SRS resource according to the SRI;
- and
- determining the pre-coding scheme for the uplink data according to a pre-coding scheme for the one or more target SRS resources;
- and wherein the DCI does not comprise information for indicating a pre-coding matrix for the uplink data or indication information of a transmission layer number.
A terminal device, comprising:
- a processor;
- and
- a storage medium, including a plurality of instructions configured to enable the processor to execute actions comprising:
- transmitting a sounding reference signal (SRS) on at least one SRS resource and receiving downlink control information (DCI) for scheduling uplink data transmission from a network side, wherein the DCI comprises an SRS resource indication (SRI);
- determining a pre-coding scheme for uplink data according to the at least one SRS resource and the SRI;
- and
- pre-coding the uplink data according to the pre-coding scheme and sending the pre-coded uplink data;
- wherein the actions comprise determining one or more target SRS resources from the at least one SRS resource according to the SRI, and determining the pre-coding scheme for the uplink data according to a pre-coding scheme for the one or more target SRS resources;
- and wherein the DCI does not comprise information for indicating a pre-coding matrix for the uplink data or indication information of a transmission layer number.
Dependencies are inferred from the claim text.