Granted Patent B2

US 12,640,866 · App. 17/817,246 · Granted May 26, 2026

Inventors: Mostafa Khoshnevisan (San Diego, CA); Yitao Chen (San Diego, CA); Xiaoxia Zhang (San Diego, CA)

Assignee: QUALCOMM Incorporated

H04L5/0048H04W72/23

Abstract

Claims (123)

1 . A user equipment (UE) for wireless communication, comprising:

one or more memories; and

one or more processors, coupled to the one or more memories, configured to:

receive a first sounding reference signal (SRS) resource indicator (SRI) that includes:

a first mapping of first antenna port numbers to first SRS resources of a first SRS resource set, and

an indication of a first set of layers associated with the first SRS resources; receive a second SRI that includes:

a second mapping of second antenna port numbers to second SRS resources of a second SRS resource set, wherein the first antenna port numbers of the first SRS resource set are mutually exclusive from the second antenna port numbers of the second SRS resource set, and

an indication of a second set of layers associated with the second SRS resources; and

transmit an uplink communication based at least in part on the first SRI or the second SRI.

2 . The UE of claim 1 ,

wherein, to receive the first SRI and the second SRI, the one or more processors are configured to:

receive a message that includes a first SRI field and a second SRI field, wherein the first SRI field includes the first SRI, and wherein the second SRI field includes the second SRI.

3 . The UE of claim 2 ,

wherein the message comprises:

downlink control information (DCI) that schedules the uplink communication.

4 . The UE of claim 2 ,

wherein the one or more processors, to transmit the uplink communication, are configured to:

transmit a first portion of the uplink communication via a first antenna port based at least in part on the first SRI; and

transmit a second portion of the uplink communication via a second antenna port based at least in part on the second SRI.

5 . The UE of claim 1 ,

wherein the first SRS resource set is associated with a first beam, a first transmission configuration indicator (TCI) state, or a first UE antenna group, and

wherein the second SRS resource set is associated with a second beam, a second TCI state, or a second UE antenna group.

6 . The UE of claim 4 ,

wherein the one or more processors, to transmit the first portion of the uplink communication and the second portion of the uplink communication, are configured to:

transmit the first portion of the uplink communication and the second portion of the uplink communication using resources that overlap in time.

7 . The UE of claim 1 ,

wherein the first antenna port numbers mapped to the first SRS resource set and the second antenna port numbers mapped to the second SRS resource set are indicated based at least in part on the UE being configured for one or more of:

single-downlink control information (DCI)-based spatial division multiplexing communications,

single-DCI-based single frequency network communications,

single-DCI-based frequency division multiplexing communications, or

multi-DCI-based multiple physical uplink shared channel (PUSCH) communications, with two PUSCH communications, that are associated with different control resource set (CORESET) pool indexes or SRS resource sets, that are at least partially overlapping in time and frequency.

8 . The UE of claim 1 ,

wherein the first antenna port numbers mapped to the first SRS resource set and the second antenna port numbers mapped to the second SRS resource set are indicated based at least in part on:

the first antenna port numbers mapped to the first SRS resource set being indicated with both of a first antenna port number and a first SRS resource set index associated with the first SRS resource set, and

the second antenna port numbers mapped to the second SRS resource set being indicated with both of a second antenna port number and a second SRS resource set index associated with the second SRS resource set.

9 . The UE of claim 1 ,

wherein a channel over which a symbol on an antenna port used for uplink transmission is conveyed is inferable from a channel over which another symbol on a same antenna port is conveyed based at least in part on uplink transmission being associated with a same SRS resource set, a same uplink beam, or a same transmission configuration indicator (TCI) state.

10 . The UE of claim 9 ,

wherein the channel over which the symbol on the antenna port used for uplink transmission is conveyed is inferable from the channel over which another symbol on the same antenna port is conveyed based at least in part on the transmissions being associated with the same SRS resource set, the same uplink beam, or the same transmission configuration indicator (TCI) state based at least in part on the UE being configured for one or more of:

codebook (CB)-based physical uplink shared channel (PUSCH) communications in a spatial division multiplexing (SDM), a single frequency network (SFN), or a frequency division multiplexing (FDM) configuration,

CB-based multiple PUSCH communications associated with different control resource set (CORESET) pool index values,

non-CB (NCB)-based PUSCH communications for an FDM configured for two resource block sets, or

NCB-based PUSCH communications for multiple PUSCH communications associated with different CORESET pool index values, the multiple PUSCH communications overlapping in time.

11 . A network node for wireless communication, comprising:

one or more memories; and

one or more processors, coupled to the one or more memories, configured to:

transmit a first sounding reference signal (SRS) resource indicator (SRI) that includes:

a first mapping of first antenna port numbers to first SRS resources of a first SRS resource set, and

an indication of a first set of layers associated with the first SRS resources; transmit a second SRI that includes:

a second mapping of second antenna port numbers to second SRS resources of a second SRS resource set, wherein the first antenna port numbers of the first SRS resource set are mutually exclusive from the second antenna port numbers of the second SRS resource set, and

an indication of a second set of layers associated with the second SRS resources; and

receive, from a user equipment (UE), an uplink communication based at least in part on the first SRI or the second SRI.

12 . The network node of claim 11 ,

wherein, to transmit the first SRI and the second SRI, the one or more processors are configured to:

transmit a message that includes a first SRI field and a second SRI field, wherein the first SRI field includes the first SRI, and wherein the second SRI field includes the second SRI.

13 . The network node of claim 12 ,

wherein the message comprises:

downlink control information (DCI) that schedules the uplink communication.

14 . The network node of claim 12 ,

wherein the one or more processors, to receive the uplink communication, are configured to:

receive a first portion of the uplink communication via a first antenna port based at least in part on the first SRI; and

receive a second portion of the uplink communication via a second antenna port based at least in part on the second SRI.

15 . The network node of claim 11 ,

wherein the first SRS resource set is associated with a first beam, a first transmission configuration indicator (TCI) state, or a first UE antenna group, and

wherein the second SRS resource set is associated with a second beam, a second TCI state, or a second UE antenna group.

16 . The network node of claim 14 ,

wherein the one or more processors, to receive the first portion of the uplink communication and the second portion of the uplink communication, are configured to:

receive the first portion of the uplink communication and the second portion of the uplink communication using resources that overlap in time.

17 . The network node of claim 11 ,

wherein the first antenna port numbers mapped to the first SRS resource set and the second antenna port numbers mapped to the second SRS resource set are indicated based at least in part on configuring the UE for one or more of:

single-downlink control information (DCI)-based spatial division multiplexing communications,

single-DCI-based single frequency network communications,

single-DCI-based frequency division multiplexing communications,

multi-DCI-based multiple physical uplink shared channel (PUSCH) communications, with two PUSCH communications, that are associated with different control resource set (CORESET) pool indexes or SRS resource sets, that are at least partially overlapping in time and frequency.

18 . The network node of claim 11 ,

wherein the first antenna port numbers mapped to the first SRS resource set and the second antenna port numbers mapped to the second SRS resource set are indicated based at least in part on:

the first antenna port numbers mapped to the first SRS resource set being indicated with both of a first antenna port number and a first SRS resource set index associated with the first SRS resource set, and

the second antenna port numbers mapped to the second SRS resource set being indicated with both of a second antenna port number and a second SRS resource set index associated with the second SRS resource set.

19 . The network node of claim 11 ,

wherein a channel over which a symbol on an antenna port used for uplink transmission is conveyed is inferable from a channel over which another symbol on the same antenna port is conveyed based at least in part on transmissions being associated with a same SRS resource set, a same uplink beam, or a same transmission configuration indicator (TCI) state.

20 . The network node of claim 19 ,

wherein the channel over which the symbol on the antenna port used for uplink transmission is conveyed is inferable from the channel over which another symbol on the same antenna port is conveyed based at least in part on transmissions being associated with the same SRS resource set, the same uplink beam, or the same transmission configuration indicator (TCI) state based at least in part on the UE being configured for one or more of:

codebook (CB)-based physical uplink shared channel (PUSCH) communications in a spatial division multiplexing (SDM), a single frequency network (SFN), or a frequency division multiplexing (FDM) configuration,

CB-based multiple PUSCH communications associated with different control resource set (CORESET) pool index values,

non-CB (NCB)-based PUSCH communications for an FDM configured for two resource block sets, or

NCB-based PUSCH communications for multiple PUSCH communications associated with different CORESET pool index values, the multiple PUSCH communications overlapping in time.

21 . A method of wireless communication performed by a user equipment (UE), comprising:

receiving a first sounding reference signal (SRS) resource indicator (SRI) that includes:

a first mapping of first antenna port numbers to first SRS signal (SRS)-resources of a first SRS resource set, and

an indication of a first set of layers associated with the first SRS resources;

receiving a second SRI that includes:

a second mapping of second antenna port numbers to second SRS resources of a second SRS resource set, wherein the first antenna port numbers of the first SRS resource set are mutually exclusive from the second antenna port numbers of the second SRS resource set, and

an indication of a second set of layers associated with the second SRS resources; and

transmitting an uplink communication based at least in part on the first SRI or the second SRI.

22 . The method of claim 21 , wherein receiving the first SRI and the second SRI comprises:

receiving a message that includes a first SRI field and a second SRI field, wherein the first SRI field includes the first SRI, and wherein the second SRI field includes the second SRI.

23 . The method of claim 22 ,

wherein transmitting the uplink communication comprises:

transmitting a first portion of the uplink communication via a first antenna port based at least in part on the first SRI; and

transmitting a second portion of the uplink communication via a second antenna port based at least in part on the second SRI.

24 . The method of claim 21 ,

wherein the first SRS resource set is associated with a first beam, a first transmission configuration indicator (TCI) state, or a first UE antenna group, and

wherein the second SRS resource set is associated with a second beam, a second TCI state, or a second UE antenna group.

25 . A method of wireless communication performed by a network node, comprising:

transmitting a first sounding reference signal (SRS) resource indicator (SRI) that includes:

a first mapping of first antenna port numbers to first SRS resources of a first SRS resource set, and

an indication of a first set of layers associated with the first SRS resources;

transmitting a second SRI that includes:

a second mapping of second antenna port numbers to second SRS resources of a second SRS resource set, wherein the first antenna port numbers of the first SRS resource set are mutually exclusive from the second antenna port numbers of the second SRS resource set, and

an indication of a second set of layers associated with the second SRS resources; and

receiving, from a user equipment (UE), an uplink communication based at least in part on the first SRI or the second SRI.

26 . The method of claim 25 , wherein transmitting the first SRI and the second SRI comprises:

transmitting a message that includes a first SRI field and a second SRI field, wherein the first SRI field includes the first SRI, and wherein the second SRI field includes the second SRI.

27 . The method of claim 26 ,

wherein receiving the uplink communication comprises:

receiving a first portion of the uplink communication via a first antenna port based at least in part on the first SRI; and

receiving a second portion of the uplink communication via a second antenna port based at least in part on the second SRI.

28 . The method of claim 25 ,

wherein the first SRS resource set is associated with a first beam, a first transmission configuration indicator (TCI) state, or a first UE antenna group, and

wherein the second SRS resource set is associated with a second beam, a second TCI state, or a second UE antenna group.

29 . The UE of claim 1 , wherein the second set of layers is different from the first set of layers.

30 . The UE of claim 1 ,

wherein the first set of layers and the second set of layers comprise a same set of layers.

Assignments (1)

Continuity (1)

References Cited (12)