IP Library › Granted Patent US 12677282
Granted Patent B2
US 12677282 · App. 17/649,185 · Granted Jul 7, 2026

Physical uplink control channel communication for carrier aggregation

Inventors: Yi Huang (San Diego, CA); Seyedkianoush Hosseini (San Diego, CA); Peter Gaal (San Diego, CA); Wanshi Chen (San Diego, CA)
Assignee: QUALCOMM Incorporated
H04W72/21H04L1/1854
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Quick Facts
Patent No.
US 12677282
App. No.
17/649,185
Granted
Jul 7, 2026
Kind
B2
Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a downlink communication associated with a physical uplink control channel (PUCCH) communication. The UE may transmit the PUCCH communication via a secondary component carrier based at least in part on, for example, a primary component carrier having insufficient uplink resources for transmitting the PUCCH communication. Numerous other aspects are described.

Claims (74)

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, individually or collectively configured to cause the UE to:

receive control information that schedules a physical downlink shared channel (PDSCH) and includes a PDSCH-to-hybrid automatic repeat request (PDSCH-to-HARQ) feedback timing indicator;

receive a downlink communication associated with a physical uplink control channel (PUCCH) communication, wherein configuration information indicates that the UE is to transmit the PUCCH communication via a primary component carrier or a secondary component carrier; and

transmit the PUCCH communication via an earliest slot of the secondary component carrier that overlaps in time with, or is after, a slot of the primary component carrier, wherein transmitting the PUCCH communication via the earliest slot of the secondary component carrier is based at least in part on the PDSCH-to-HARQ feedback timing indicator, and wherein the earliest slot of the secondary component carrier is indicated based at least in part on the PDSCH-to-HARQ feedback timing indicator.

2 . The UE of claim 1 , wherein transmitting the PUCCH communication via the earliest slot of the secondary component carrier is based at least in part on the primary component carrier having insufficient uplink resources for transmitting the PUCCH communication.

3 . The UE of claim 1 , wherein the one or more processors are configured to cause the UE to:

receive an indication that the UE is to transmit the PUCCH communication via the earliest slot of the secondary component carrier, wherein the configuration information comprises the indication.

4 . The UE of claim 3 , wherein the one or more processors, to receive the indication that the UE is to transmit the PUCCH communication via the secondary component carrier, are configured to cause the UE to:

receive the indication via radio resource control signaling.

5 . The UE of claim 1 , wherein the primary component carrier and the secondary component carrier are component carriers of a PUCCH group.

6 . The UE of claim 1 , wherein the one or more processors, to transmit the PUCCH communication via the earliest slot of the secondary component carrier, are configured to cause the UE to:

transmit the PUCCH communication via the earliest slot of the secondary component carrier based at least in part on a numerology of the primary component carrier.

7 . The UE of claim 1 , wherein the one or more processors are configured to cause the UE to:

determine to transmit the PUCCH communication via the earliest slot of the secondary component carrier based at least in part on

the PDSCH-to-HARQ feedback timing indicator.

8 . The UE of claim 1 , wherein the downlink communication is associated with a configured grant.

9 . The UE of claim 1 , wherein the one or more processors are configured to cause the UE to:

determine to transmit the PUCCH communication via the earliest slot of the secondary component carrier based at least in part on:

the PDSCH-to-HARQ feedback timing indicator,

and the earliest slot of the secondary component carrier having sufficient uplink resources for transmitting the PUCCH communication.

10 . The UE of claim 1 , wherein the one or more processors are configured to cause the UE to:

receive an indication of priorities of a set of candidate secondary component carriers,

wherein transmitting the PUCCH communication via the earliest slot of the secondary component carrier is based at least in part on the secondary component carrier having a highest priority of candidate secondary component carriers, of the set of candidate secondary component carriers, having sufficient uplink resources for transmitting the PUCCH communication.

11 . A network entity for wireless communication, comprising:

one or more memories; and

one or more processors, coupled to the one or more memories, individually or collectively configured to cause the network entity to:

transmit control information that schedules a physical downlink shared channel (PDSCH) and includes a PDSCH-to-hybrid automatic repeat request (PDSCH-to-HARQ) feedback timing indicator;

transmit a downlink communication associated with a physical uplink control channel (PUCCH) communication, wherein configuration information indicates that a user equipment (UE) is to transmit the PUCCH communication via a primary component carrier or a secondary component carrier; and

receive the PUCCH communication via an earliest slot of the secondary component carrier that overlaps in time with, or is after, a slot of the primary component carrier, the secondary component carrier associated with the UE, wherein receiving the PUCCH communication via the earliest slot of the secondary component carrier is based at least in part on the PDSCH-to-HARQ feedback timing indicator, and wherein the earliest slot of the secondary component carrier is indicated based at least in part on the PDSCH-to-HARQ feedback timing indicator.

12 . The network entity of claim 11 , wherein receiving the PUCCH communication via the earliest slot of the secondary component carrier is based at least in part on the primary component carrier associated with the UE having insufficient uplink resources for the UE to transmit the PUCCH communication.

13 . The network entity of claim 11 , wherein the one or more processors are configured to cause the network entity to:

transmit an indication that the UE is to transmit the PUCCH communication via the earliest slot of the secondary component carrier, wherein the configuration information comprises the indication.

14 . The network entity of claim 13 , wherein the one or more processors, to cause the network entity to transmit the indication that the UE is to transmit the PUCCH communication via the secondary component carrier, are configured to cause the network entity to:

transmit the indication via radio resource control signaling.

15 . The network entity of claim 11 , wherein the primary component carrier and the secondary component carrier are component carriers of a PUCCH group.

16 . The network entity of claim 11 , wherein the one or more processors, to cause the network entity to receive the PUCCH communication via the earliest slot of the secondary component carrier, are configured to cause the network entity to:

receive the PUCCH communication via the earliest slot of the secondary component carrier based at least in part on a numerology of the primary component carrier.

17 . The network entity of claim 11 , wherein the one or more processors are configured to cause the network entity to:

determine to receive the PUCCH communication via the earliest slot of the secondary component carrier based at least in part on

the PDSCH-to-HARQ feedback timing indicator.

18 . The network entity of claim 11 , wherein the downlink communication is associated with a configured grant.

19 . The network entity of claim 11 , wherein the one or more processors are configured to cause the network entity to:

determine to receive the PUCCH communication via the earliest slot of the secondary component carrier based at least in part on:

the PDSCH-to-HARQ feedback timing indicator,

and the earliest slot of the secondary component carrier having sufficient uplink resources for the UE to transmit the PUCCH communication.

20 . The network entity of claim 11 , wherein the one or more processors are configured to cause the network entity to:

transmit an indication of priorities of a set of candidate secondary component carriers,

wherein receiving the PUCCH communication via the earliest slot of the secondary component carrier is based at least in part on the secondary component carrier having a highest priority of candidate secondary component carriers, of the set of candidate secondary component carriers, having sufficient uplink resources for the UE to transmit the PUCCH communication.

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

receiving control information that schedules a physical downlink shared channel (PDSCH) and includes a PDSCH-to-hybrid automatic repeat request (PDSCH-to-HARQ) feedback timing indicator;

receiving a downlink communication associated with a physical uplink control channel (PUCCH) communication, wherein configuration information indicates that the UE is to transmit the PUCCH communication via a primary component carrier or a secondary component carrier; and

transmitting the PUCCH communication via an earliest slot of the secondary component carrier that overlaps in time with, or is after, a slot of the primary component carrier, wherein transmitting the PUCCH communication via the earliest slot of the secondary component carrier is based at least in part on the PDSCH-to-HARQ feedback timing indicator, and wherein the earliest slot of the secondary component carrier is indicated based at least in part on the PDSCH-to-HARQ feedback timing indicator.

22 . The method of claim 21 , wherein transmitting the PUCCH communication via the earliest slot of the secondary component carrier is based at least in part on the primary component carrier having insufficient uplink resources for transmitting the PUCCH communication.

23 . The method of claim 21 , wherein transmitting the PUCCH communication via the earliest slot of the secondary component carrier comprises:

transmitting the PUCCH communication via the earliest slot of the secondary component carrier based at least in part on a numerology of the primary component carrier.

24 . The method of claim 21 , further comprising:

determining to transmit the PUCCH communication via the earliest slot of the secondary component carrier based at least in part on

the PDSCH-to-HARQ feedback timing indicator.

25 . The method of claim 21 , wherein the downlink communication is associated with a configured grant.

26 . The method of claim 21 , further comprising:

determining to transmit the PUCCH communication via the earliest slot of the secondary component carrier based at least in part on:

the PDSCH-to-HARQ feedback timing indicator,

and the earliest slot of the secondary component carrier having sufficient uplink resources for transmitting the PUCCH communication.

27 . The method of claim 21 , further comprising:

receiving an indication of priorities of a set of candidate secondary component carriers,

wherein transmitting the PUCCH communication via the earliest slot of the secondary component carrier is based at least in part on the secondary component carrier having a highest priority of candidate secondary component carriers, of the set of candidate secondary component carriers, having sufficient uplink resources for transmitting the PUCCH communication.

28 . A method of wireless communication performed by a network entity, comprising:

transmitting control information that schedules a physical downlink shared channel (PDSCH) and includes a PDSCH-to-hybrid automatic repeat request (PDSCH-to-HARQ) feedback timing indicator;

transmitting a downlink communication associated with a physical uplink control channel (PUCCH) communication, wherein configuration information indicates that a user equipment (UE) is to transmit the PUCCH communication via a primary component carrier or a secondary component carrier; and

receiving the PUCCH communication via an earliest slot of a secondary component carrier that overlaps in time with, or is after, a slot of the primary component carrier, the secondary component carrier associated with the UE, wherein receiving the PUCCH communication via the earliest slot of the secondary component carrier is based at least in part on the PDSCH-to-HARQ feedback timing indicator, and wherein the earliest slot of the secondary component carrier is indicated based at least in part on the PDSCH-to-HARQ feedback timing indicator.

29 . The method of claim 28 , wherein receiving the PUCCH communication via the earliest slot of the secondary component carrier is based at least in part on the primary component carrier associated with the UE having insufficient uplink resources for the UE to transmit the PUCCH communication.

30 . The method of claim 28 , wherein the downlink communication is associated with a configured grant.