Indicating uplink beams and sounding reference signal resources

1 . A user equipment (UE), comprising:

a transceiver configured to receive, in a downlink control information (DCI) format, (i) a sounding reference signal resource indicator (SRI) and (ii) a transmission configuration indication (TCI) codepoint mapped to one or more first TCI states; and

a processor operably coupled with the transceiver, the processor configured to:

determine, based on the SRI, a sounding reference signal (SRS) resource and a physical uplink shared channel (PUSCH) associated with the SRS resource; and

determine, based on the one or more first TCI states, a spatial filter for transmitting the PUSCH,

wherein the transceiver is further configured to transmit the PUSCH using the determined spatial filter, and

wherein:

the transceiver is further configured to, when the DCI format is a downlink (DL) related DCI format, receive a first radio resource control (RRC) signaling indicating a presence or absence of a ‘SRS resource indicator’ field in the DCI format; and

the transceiver is further configured to, when the DCI format is an uplink (UL) related DCI format, receive a second RRC signaling indicating a presence or absence of a ‘Transmission configuration indication’ field in the DCI format.

2 . The UE of claim 1 , wherein:

the transceiver is further configured to receive information related to a first SRS resource set and a second SRS resource set;

the DCI format further includes a SRS resource set indicator (SRSI);

the SRS resource and the associated PUSCH are determined based on the SRSI;

the processor is further configured to identify, based on the SRSI, one or more second TCI states from the one or more first TCI states; and

the spatial filter for transmitting the PUSCH is determined based on the one or more second TCI states.

3 . The UE of claim 2 , wherein:

when the DCI format is a downlink (DL) related DCI format, the DCI format includes a ‘SRS resource set indicator’ field indicating the SRSI; and

the transceiver is further configured to receive a radio resource control (RRC) signaling indicating a presence or absence of the ‘SRS resource set indicator’ field in the DCI format.

4 . The UE of claim 2 , wherein:

when the SRSI is set to ‘00’, the SRI indicates the SRS resource is from the first SRS resource set; and

when the SRSI is set to ‘01’, the SRI indicates the SRS resource is from the second SRS resource set.

5 . The UE of claim 2 , wherein:

when the SRSI is set to ‘00’, a first TCI state from the one or more first TCI states corresponds to the one or more second TCI states;

when the SRSI is set to ‘01’, a second TCI state from the one or more first TCI states corresponds to the one or more second TCI states; and

when the SRSI is set to ‘10’ or ‘11’, the first and second TCI states from the one or more first TCI states correspond to the one or more second TCI states.

6 . A base station (BS), comprising:

a transceiver configured to transmit, in a downlink control information (DCI) format, (i) a sounding reference signal resource indicator (SRI) and (ii) a transmission configuration indication (TCI) codepoint mapped to one or more first TCI states, wherein the SRI indicates a sounding reference signal (SRS) resource and a physical uplink shared channel (PUSCH) associated with the SRS resource; and

a processor operably coupled with the transceiver, the processor configured to determine, based on the one or more first TCI states, a spatial filter for receiving the PUSCH,

wherein the transceiver is further configured to receive the PUSCH using the determined spatial filter, and

wherein:

the transceiver is further configured to, when the DCI format is a downlink (DL) related DCI format, transmit a first radio resource control (RRC) signaling indicating a presence or absence of a ‘SRS resource indicator’ field in the DCI format; and

the transceiver is further configured to, when the DCI format is an uplink (UL) related DCI format, transmit a second RRC signaling indicating a presence or absence of a ‘Transmission configuration indication’ field in the DCI format.

7 . The BS of claim 6 , wherein:

the transceiver is further configured to transmit information related to a first SRS resource set and a second SRS resource set;

the DCI format further includes a SRS resource set indicator (SRSI);

the SRS resource and the associated PUSCH are based on the SRSI;

the SRSI indicates one or more second TCI states from the one or more first TCI states; and

the spatial filter for receiving the PUSCH is based on the one or more second TCI states.

8 . The BS of claim 7 , wherein:

when the DCI format is a downlink (DL) related DCI format, the DCI format includes a ‘SRS resource set indicator’ field indicating the SRSI; and

the transceiver is further configured to transmit a radio resource control (RRC) signaling indicating a presence or absence of the ‘SRS resource set indicator’ field in the DCI format.

9 . The BS of claim 7 , wherein:

when the SRSI is set to ‘00’, the SRI indicates the SRS resource is from the first SRS resource set; and

when the SRSI is set to ‘01’, the SRI indicates the SRS resource is from the second SRS resource set.

10 . The BS of claim 7 , wherein:

when the SRSI is set to ‘00’, a first TCI state from the one or more first TCI states corresponds to the one or more second TCI states;

when the SRSI is set to ‘01’, a second TCI state from the one or more first TCI states corresponds to the one or more second TCI states; and

when the SRSI is set to ‘10’ or ‘11’, the first and second TCI states from the one or more first TCI states correspond to the one or more second TCI states.

11 . A method performed by a user equipment (UE), the method comprising:

receiving, in a downlink control information (DCI) format, (i) a sounding reference signal resource indicator (SRI) and (ii) a transmission configuration indication (TCI) codepoint mapped to one or more first TCI states;

determining, based on the SRI, a sounding reference signal (SRS) resource and a physical uplink shared channel (PUSCH) associated with the SRS resource;

determining, based on the one or more first TCI states, a spatial filter for transmitting the PUSCH;

transmitting the PUSCH using the determined spatial filter;

when the DCI format is a downlink (DL) related DCI format, receiving a first radio resource control (RRC) signaling indicating a presence or absence of a ‘SRS resource indicator’ field in the DCI format; and

when the DCI format is an uplink (UL) related DCI format, receiving a second RRC signaling indicating a presence or absence of a ‘Transmission configuration indication’ field in the DCI format.

12 . The method of claim 11 , further comprising:

receiving information related to a first SRS resource set and a second SRS resource set, wherein the DCI format further includes a SRS resource set indicator (SRSI) and wherein the SRS resource and the associated PUSCH are determined based on the SRSI; and

identifying, based on the SRSI, one or more second TCI states from the one or more first TCI states, wherein the spatial filter for transmitting the PUSCH is determined based on the one or more second TCI states.

13 . The method of claim 12 , wherein:

when the DCI format is a downlink (DL) related DCI format, the DCI format includes a ‘SRS resource set indicator’ field indicating the SRSI; and

the method further comprises receiving a radio resource control (RRC) signaling indicating a presence or absence of the ‘SRS resource set indicator’ field in the DCI format.

14 . The method of claim 12 , wherein:

when the SRSI is set to ‘00’, the SRI indicates the SRS resource is from the first SRS resource set; and

when the SRSI is set to ‘01’, the SRI indicates the SRS resource is from the second SRS resource set.

15 . The method of claim 12 , wherein:

when the SRSI is set to ‘00’, a first TCI state from the one or more first TCI states corresponds to the one or more second TCI states;

when the SRSI is set to ‘01’, a second TCI state from the one or more first TCI states corresponds to the one or more second TCI states; and

when the SRSI is set to ‘10’ or ‘11’, the first and second TCI states from the one or more first TCI states correspond to the one or more second TCI states.