Granted Patent B2

US 12,652,676 · App. 18/254,117 · Granted Jun 9, 2026

Inventors: Yan Zhou (San Diego, CA); Fang Yuan (Beijing, CN); Sony Akkarakaran (Poway, CA); Tao Luo (San Diego, CA)

Assignee: QUALCOMM Incorporated

H04W72/232H04L1/0008H04L1/1812H04L5/0053H04W72/1268

Abstract

Claims (91)

1 . A method for wireless communications at a user equipment (UE), comprising:

receiving downlink control information (DCI) scheduling a downlink shared channel, the DCI comprising a transmission configuration indicator (TCI) state indicating a common beam for at least one channel;

transmitting a feedback message for the downlink shared channel, wherein the feedback message acknowledges receipt of the TCI state; and

applying the TCI state after termination of a beam application time, and based at least in part on transmission of the feedback message acknowledging the receipt of the TCI state, the beam application time being based at least in part on a beam switch indicated by the TCI state.

2 . The method of claim 1 , further comprising:

determining that a payload of the downlink shared channel comprises a single transport block; and

transmitting a single positive acknowledgement bit for the downlink shared channel to acknowledge the receipt of the TCI state based at least in part on the determining.

3 . The method of claim 1 , further comprising:

determining that a payload of the downlink shared channel comprises more than one transport block; and

transmitting at least one positive acknowledgement bit for the downlink shared channel to acknowledge the receipt of the TCI state based at least in part on the determining.

4 . The method of claim 1 , further comprising:

determining that the downlink shared channel is configured with one or more code block groups; and

transmitting at least one positive acknowledgement bit for the downlink shared channel to acknowledge the receipt of the TCI state based at least in part on the determining.

5 . The method of claim 1 , further comprising:

generating the feedback message as an enhanced acknowledgement message, the enhanced acknowledgement message comprising a set of positive acknowledgement bits; and

transmitting the enhanced acknowledgement message to acknowledge the receipt of the TCI state based at least in part on the generating.

6 . The method of claim 5 , wherein the enhanced acknowledgement message is associated with a hybrid automatic repeat request (HARQ) type II codebook.

7 . The method of claim 1 , further comprising:

receiving, via a radio resource control message, an indication that the feedback message for the downlink shared channel comprises a set of acknowledgement bits and an additional set of padded bits to acknowledge the receipt of the TCI state.

8 . The method of claim 7 , wherein a payload of the downlink shared channel comprises a single transport block comprising one or more code block groups, wherein transmitting the feedback message further comprises:

allocating the additional set of padded bits to a portion of a codebook for the downlink shared channel, the additional set of padded bits indicating a positive acknowledgement value; and

transmitting at least the additional set of padded bits allocated to the portion of the codebook to acknowledge the receipt of the TCI state.

9 . The method of claim 7 , wherein a payload of the downlink shared channel comprises more than one transport block, the method further comprising:

transmitting a first positive acknowledgement bit for a first transport block, the first positive acknowledgement bit indicating the receipt of the downlink shared channel; and

transmitting a second positive acknowledgement bit for a second transport block, the second positive acknowledgement bit indicating the receipt of both the downlink shared channel and the DCI.

10 . The method of claim 1 , further comprising:

generating a single positive acknowledgement bit dedicated for the DCI in accordance with a hybrid automatic repeat request (HARQ) type I codebook; and

transmitting the feedback message comprising the single positive acknowledgement bit to acknowledge the receipt of the TCI state based at least in part on the generating.

11 . The method of claim 1 , further comprising:

transmitting the feedback message using a set of uplink control channel resources associated with the downlink shared channel, wherein the feedback message comprises a first acknowledgement of the downlink shared channel and a second acknowledgement of the receipt of the TCI state, wherein the feedback message indicates the receipt of the TCI state.

12 . The method of claim 11 , wherein the set of uplink control channel resources is configured with a set of hybrid automatic repeat request (HARQ) bits for transmitting the feedback message associated with the downlink shared channel.

13 . The method of claim 11 , wherein the set of uplink control channel resources is indicated by the DCI.

14 . The method of claim 1 , wherein the DCI is received after at least one other DCI, and wherein transmitting the feedback message further comprises:

determining that the TCI state indicating the common beam is included in the DCI;

identifying a set of uplink control channel resources in the DCI for transmitting the feedback message based at least in part on the DCI including the TCI state; and

transmitting the feedback message using the set of uplink control channel resources to acknowledge the receipt of the TCI state.

15 . The method of claim 14 , further comprising:

determining that the TCI state indicating the common beam is included in the DCI and the at least one other DCI; and

transmitting the feedback message using the set of uplink control channel resources to acknowledge the receipt of the TCI state, or using a separate set of uplink control channel resources to acknowledge the receipt of the at least one other DCI.

16 . The method of claim 14 , wherein the TCI state indicating the common beam is included in the DCI based at least in part on the DCI being received after the at least one other DCI.

17 . The method of claim 1 , wherein the TCI state indicates a joint indication or separate indications for the at least one channel.

18 . The method of claim 1 , wherein the TCI state indicating the common beam comprises a layer 1 based beam indication.

19 . A method for wireless communications at a network device, comprising:

transmitting, to a user equipment (UE), downlink control information (DCI) scheduling a downlink shared channel, the DCI comprising a transmission configuration indicator (TCI) state indicating a common beam for at least one channel; and

receiving, from the UE, a feedback message for the downlink shared channel, wherein the feedback message acknowledges receipt of the TCI state by the UE, wherein the TCI state is applicable after termination of a beam application time, the beam application time being based at least in part on a beam switch indicated by the TCI state.

20 . The method of claim 19 , further comprising:

transmitting the downlink shared channel in a single transport block; and

receiving, from the UE, a single positive acknowledgement bit for the downlink shared channel acknowledging the receipt of the TCI state based at least in part on the transmitting.

21 . The method of claim 19 , further comprising:

transmitting the downlink shared channel in more than one transport block; and

receiving, by the UE, at least one positive acknowledgement bit for the downlink shared channel acknowledging the receipt of the TCI state based at least in part on the transmitting.

22 . The method of claim 19 , further comprising:

transmitting the downlink shared channel in one or more code block groups; and

receiving, from the UE, at least one positive acknowledgement bit for the downlink shared channel acknowledging the receipt of the TCI state based at least in part on the transmitting.

23 . The method of claim 19 , further comprising:

transmitting, to UE via a radio resource control message, an indication that the feedback message for the downlink shared channel comprises a set of acknowledgement bits and an additional set of padded bits to acknowledge the receipt of the TCI state.

24 . The method of claim 23 , wherein a payload of the downlink shared channel comprises a single transport block comprising one or more code block groups, wherein receiving the feedback message further comprises:

receiving, from the UE, the additional set of padded bits in a portion of a codebook for the downlink shared channel, the additional set of padded bits indicating a positive acknowledgement value acknowledging the receipt of the TCI state.

25 . The method of claim 23 , wherein a payload of the downlink shared channel comprises more than one transport block, the method further comprising:

receiving, from the UE, a first positive acknowledgement bit for a first transport block, the first positive acknowledgement bit indicating the receipt of the downlink shared channel; and

receiving, from the UE, a second positive acknowledgement bit for a second transport block, the second positive acknowledgement bit indicating the receipt of both the downlink shared channel and the DCI.

26 . The method of claim 19 , further comprising:

receiving, from the UE, the feedback message comprising a single positive acknowledgement bit dedicated for the DCI in accordance with a hybrid automatic repeat request (HARQ) type I codebook, wherein the single positive acknowledgement bit acknowledges receipt of the TCI state.

27 . The method of claim 19 , further comprising:

receiving the feedback message from the UE on a set of uplink control channel resources associated with the downlink shared channel, wherein the feedback message comprises a first acknowledgement of the downlink shared channel and a second acknowledgement of the receipt of the TCI state.

28 . The method of claim 27 , wherein the set of uplink control channel resources is configured with a set of hybrid automatic repeat request (HARQ) bits for transmission of the feedback message associated with the downlink shared channel.

29 . The method of claim 27 , wherein the set of uplink control channel resources is indicated by the DCI.

30 . The method of claim 19 , wherein the DCI is transmitted after at least one other DCI, and wherein receiving the feedback message further comprises:

transmitting, in the DCI, the TCI state indicating the common beam and an indication of a set of uplink control channel resources for the feedback message based at least in part on the DCI including the TCI state; and

receiving the feedback message from the UE to acknowledge the receipt of the TCI state on the set of uplink control channel resources.

31 . The method of claim 30 , further comprising:

transmitting the TCI state indicating the common beam in the DCI and the at least one other DCI; and

receiving the feedback message from the UE on the set of uplink control channel resources to acknowledge the receipt of the TCI state, or on a separate set of uplink control channel resources to acknowledge the receipt of the at least one other DCI.

32 . The method of claim 30 , wherein the TCI state indicating the common beam is included in the DCI based at least in part on the DCI being transmitted after the at least one other DCI.

33 . An apparatus for wireless communications at a user equipment (UE), comprising:

at least one processor;

at least one memory coupled with the at least one processor; and

instructions stored in the at least one memory and executable by the at least one processor to cause the apparatus to:

receive downlink control information (DCI) scheduling a downlink shared channel, the DCI comprising a transmission configuration indicator (TCI) state indicating a common beam for at least one channel;

transmit a feedback message for the downlink shared channel, wherein the feedback message acknowledges receipt of the TCI state; and

apply the TCI state after termination of a beam application time, and based at least in part on transmission of the feedback message acknowledging the receipt of the TCI state, the beam application time being based at least in part on a beam switch indicated by the TCI state.

34 . An apparatus for wireless communications at a network device, comprising:

at least one processor;

at least one memory coupled with the at least one processor; and

instructions stored in the at least one memory and executable by the at least one processor to cause the apparatus to:

transmit, to a user equipment (UE), downlink control information (DCI) scheduling a downlink shared channel, the DCI comprising a transmission configuration indicator (TCI) state indicating a common beam for at least one channel; and

receive, from the UE, a feedback message for the downlink shared channel, wherein the feedback message acknowledges receipt of the TCI state by the UE, wherein the TCI state is applicable after termination of a beam application time, the beam application time being based at least in part on a beam switch indicated by the TCI state.

35 . An apparatus for wireless communications at a user equipment (UE), comprising:

means for receiving downlink control information (DCI) scheduling a downlink shared channel, the DCI comprising a transmission configuration indicator (TCI) state indicating a common beam for at least one channel;

means for transmitting a feedback message for the downlink shared channel, wherein the feedback message acknowledges receipt of the TCI state; and

means for applying the TCI state after termination of a beam application time, and based at least in part on transmission of the feedback message acknowledging the receipt of the TCI state, the beam application time being based at least in part on a beam switch indicated by the TCI state.

Assignments (1)

Continuity (1)

References Cited (22)