Enhanced single-DCI multi-panel uplink transmissions

Inventors: Yushu Zhang (Beijing, CN); Chunxuan Ye (San Diego, CA); Chunhai Yao (Beijing, CN); Hong He (San Jose, CA); Oghenekome Oteri (San Diego, CA); Huaning Niu (San Jose, CA); Wei Zeng (Saratoga, CA); Haitong Sun (Cupertino, CA); Seyed Ali Akbar Fakoorian (San Diego, CA)

Assignee: Apple Inc.

H04W72/1268 H04W72/231

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Quick Facts

Patent No.: US 12,666,419
App. No.: 18/118,960
Granted: Jun 23, 2026
Kind: B2

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Abstract

Disclosed are methods, systems, and computer-readable medium to perform operations including: receiving downlink control information (DCI) scheduling a first physical uplink shared channel (PUSCH) transmission to be transmitted by a first antenna panel of the UE, and a second PUSCH transmission to be transmitted by a second antenna panel of the UE, receiving data indicative of at least two transmission configuration indicator (TCI) states, the at least two TCI states including a first TCI state indicating a beam of the first antenna panel for transmission of the first PUSCH transmission, and a second TCI state indicating a beam of the second antenna panel for transmission of the second PUSCH transmission, and transmitting the first PUSCH transmission using the beam of the first antenna panel and the second PUSCH transmission using the beam of the second antenna panel.

Claims (36)

1 . An apparatus comprising one or more baseband processors configured to perform operations comprising:

receiving downlink control information (DCI) scheduling at least one physical uplink shared channel (PUSCH) transmission to be transmitted by a first antenna panel of a user equipment (UE) and a second antenna panel of the UE, wherein the DCI comprises a sounding reference signal (SRS) resource set indicator field, and wherein a value of the SRS resource set indicator field indicates an association of transmission configuration indicator (TCI) states with the first and second antenna panels for the at least one PUSCH transmission;

receiving data indicative of at least two TCI states, the at least two TCI states including a first TCI state indicating a beam of the first antenna panel for transmission of the at least one PUSCH transmission, and a second TCI state indicating a beam of the second antenna panel for transmission of the at least one PUSCH transmission; and

transmitting, in accordance with the association indicated by the SRS resource set indicator field, the at least one PUSCH transmission using the beam of the first antenna panel and the beam of the second antenna panel.

2 . The apparatus of claim 1 , wherein transmitting the at least one PUSCH transmission comprises:

transmitting the at least one PUSCH transmission using the beam of the first antenna panel to a first transmission/reception point (TRP); and

transmitting the at least one PUSCH transmission using the beam of the second antenna panel to a second TRP that is different from the first TRP.

3 . The apparatus of claim 1 , wherein the at least one PUSCH transmission is transmitted according to a multiplexing scheme, and wherein the multiplexing scheme comprises a frequency domain multiplexing (FDM) repetition scheme, a FDM beam hopping scheme, a spatial domain multiplexing (SDM) repetition scheme, or a SDM multiplexing scheme.

4 . The apparatus of claim 1 , wherein the at least one PUSCH transmission is transmitted according to a frequency domain multiplexing (FDM) repetition scheme or a spatial domain multiplexing (SDM) repetition scheme, and wherein the one or more baseband processors are configured to perform the operations comprising:

determining a transport block size (TBS) for the at least one PUSCH transmission based at least in part on a number of subcarriers used for the at least one PUSCH transmission.

5 . The apparatus of claim 1 , wherein the one or more baseband processors are configured to perform the operations comprising:

receiving an indication of a first number of layers for transmission of the at least one PUSCH transmission using the first antenna panel and a second number of layers for transmission of the at least one PUSCH transmission using the second panel, wherein the first number of layers is equal to the second number of layers.

6 . The apparatus of claim 1 , wherein the beam of the first panel comprises one or more characteristics that differ from those of beam of the second antenna panel, the one or more characteristics comprising at least one of: a number of layers, a modulation and coding scheme (MCS), a redundancy value (RV), a hybrid automatic repeat request (HARQ) process, a new data indicator, or a phase tracking reference signal (PTRS) to demodulation reference signal (DMRS) association.

7 . The apparatus of claim 1 , wherein the one or more baseband processors are configured to perform the operations comprising:

receiving an indication of a transmission rank indicator (TRI) and a transmission precoder matrix index (TPMI), wherein the TRI and the TPMI are jointly coded.

8 . The apparatus of claim 1 , wherein a demodulation reference signal (DMRS) port for each of the first antenna panel and the second antenna panel is different.

9 . A method to be performed by a user equipment (UE), the method comprising:

receiving downlink control information (DCI) scheduling at least one physical uplink shared channel (PUSCH) transmission to be transmitted by a first antenna panel of the UE and a second antenna panel of the UE, wherein the DCI comprises a sounding reference signal (SRS) resource set indicator field, and wherein a value of the SRS resource set indicator field indicates an association of transmission configuration indicator (TCI) states with the first and second antenna panels for the at least one PUSCH transmission;

10 . A base station comprising one or more processors configured to perform operations comprising:

transmitting downlink control information (DCI) to a user equipment (UE), the DCI scheduling at least one physical uplink shared channel (PUSCH) transmission to be transmitted by a first antenna panel of the UE and a second antenna panel of the UE, wherein the DCI comprises a sounding reference signal (SRS) resource set indicator field, and wherein a value of the SRS resource set indicator field indicates an association of transmission configuration indicator (TCI) states with the first and second antenna panels for the at least one PUSCH transmission;

transmitting data indicative of at least two TCI states to the UE, the at least two TCI states including a first TCI state indicating a beam of the first antenna panel for transmission of the at least one PUSCH transmission, and a second TCI state indicating a beam of the second antenna panel for transmission of the at least one PUSCH transmission; and

receiving the at least one PUSCH transmission transmitted using at least one of the beam of the first antenna panel or the beam of the second antenna panel.

11 . The base station of claim 10 , wherein the at least one PUSCH transmission is transmitted according to a frequency domain multiplexing (FDM) repetition scheme or a spatial domain multiplexing (SDM) repetition scheme, and wherein the one or more processors configured to perform the operations comprising transmitting, to the UE:

data indicative of a redundancy value (RV) for each of the beam of the first antenna panel and the beam of the second antenna panel; or

data indicative of a RV for the beam of the first antenna panel and a RV offset for the beam of the second antenna panel.

12 . The base station of claim 10 , wherein the at least one PUSCH transmission is transmitted according to a spatial domain multiplexing (SDM) repetition scheme or a SDM multiplexing scheme, and wherein the one or more processors configured to perform the operations comprising:

receiving data indicative of a maximum number of layers for each of the first antenna panel and the second antenna panel; and

transmitting an indication of a number of layers for transmission of the at least one PUSCH transmission.

13 . The base station of claim 10 , wherein the one or more processors configured to perform the operations comprising:

transmitting, to the UE, an indication of a first number of layers for transmission of the at least one PUSCH transmission using the first panel and a second number of layers for transmission of the at least one PUSCH transmission using the second panel, wherein the first number of layers is equal to the second number of layers.

14 . The base station of claim 10 , the beam of the first panel comprises one or more characteristics that differ from those of beam of the second antenna panel, the one or more characteristics comprising at least one of: a number of layers, a modulation and coding scheme (MCS), a redundancy value (RV), a hybrid automatic repeat request (HARQ) process, a new data indicator, or a phase tracking reference signal (PTRS) to demodulation reference signal (DMRS) association.

15 . The base station of claim 10 , wherein the one or more processors configured to perform the operations comprising:

transmitting, to the UE, an indication of a transmission rank indicator (TRI) and a transmission precoder matrix index (TPMI), wherein the TRI and the TPMI are jointly coded.

16 . The base station of claim 10 , wherein a demodulation reference signal (DMRS) port for each of the first antenna panel and the second antenna panel is different.