User equipment, base station, and method for codebook based pusch transmission

A user equipment (UE) for codebook based Physical Uplink Shared Channel (PUSCH) transmission, the UE comprising:

• at least one processor;
• and
• at least one non-transitory computer-readable medium coupled to the at least one processor and storing one or more computer-executable instructions that, when executed by the at least one processor, cause the UE to;
• receive, from a base station (BS), a PUSCH configuration via Radio Resource Control (RRC) signaling, the PUSCH configuration including a first parameter indicating grouping information for eight transmission antenna ports of the UE;
• receive, from the BS, first Downlink Control Information (DCI) including a first field and a second field, the first field indicating an 8-port Sounding Reference Signal (SRS) resource corresponding to the eight transmission antenna ports, and the second field indicating an index;
• determine a dedicated table based on the first parameter;
• determine a first precoding matrix based on the dedicated table and the index;
• and
• perform codebook based PUSCH transmission using the first precoding matrix.

A base station (BS) for configuring codebook based Physical Uplink Shared Channel (PUSCH) transmission, the BS comprising:

• at least one processor;
• and
• at least one non-transitory computer-readable medium coupled to the at least one processor and storing one or more computer-executable instructions that, when executed by the at least one processor, cause the BS to:
• transmit, to a user equipment (UE), a PUSCH configuration via Radio Resource Control (RRC) signaling, the PUSCH configuration including a first parameter indicating grouping information for eight transmission antenna ports of the UE;
• and
• transmit, to the UE, first Downlink Control Information (DCI) including a first field and a second field, the first field indicating an 8-port Sounding Reference Signal (SRS) resource corresponding to the eight transmission antenna ports, and the second field indicating an index, wherein the UE:
• determines a dedicated table based on the first parameter,
• determines a first precoding matrix based on the dedicated table and the index, and
• performs codebook based PUSCH transmission using the first precoding matrix.