Granted Patent B2

US 12,641,549 · App. 17/999,551 · Granted May 26, 2026

Inventors: Peng Cheng (Beijing, CN); Linhai He (San Diego, CA); Huilin Xu (Temecula, CA)

Assignee: QUALCOMM Incorporated

H04W52/365H04W76/15H04W76/20

Abstract

Claims (90)

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

establishing a primary cell connection and a secondary cell connection at the UE;

initiating, at the UE, a timer for power headroom reporting by the UE based at least in part on activating the secondary cell connection;

configuring a bandwidth part associated with the secondary cell connection to operate in a dormant state;

receiving an indication to configure the bandwidth part to operate in a non-dormant state;

configuring the bandwidth part associated with the secondary cell connection to operate in the non-dormant state based at least in part on the indication; and

determining to refrain from transmitting a power headroom report based at least in part on a status of the timer for power headroom reporting and the indication to configure the bandwidth part to operate in the non-dormant state.

2 . The method of claim 1 , wherein determining whether to transmit the power headroom report further comprises:

identifying that the timer for power headroom reporting has expired; and

determining to transmit the power headroom report based at least in part on identifying that the timer for power headroom reporting has expired.

3 . The method of claim 2 , further comprising:

restarting, at the UE, the timer for power headroom reporting by the UE based at least in part on transmitting the power headroom report.

4 . The method of claim 1 , wherein determining whether to transmit the power headroom report further comprises:

identifying that the timer for power headroom reporting is active; and

refraining from transmitting the power headroom report based at least in part on identifying that the timer for power headroom reporting is active.

5 . The method of claim 1 , wherein receiving the indication to configure the bandwidth part to operate in the non-dormant state:

receiving the indication in a physical downlink control channel transmission.

6 . The method of claim 5 , wherein the indication comprises dormancy downlink control information (DCI).

7 . The method of claim 1 , wherein:

initiating the timer for power headroom reporting is based at least in part on a previous power headroom report transmission.

8 . The method of claim 1 , wherein configuring the bandwidth part associated with the secondary cell connection to operate in the non-dormant state comprises:

configuring the bandwidth part associated with the secondary cell connection to change from the dormant state to the non-dormant state, wherein the bandwidth part is associated with a medium access control (MAC) entity with configured uplink.

9 . The method of claim 1 , further comprising:

receiving a downlink control message indicating a duration for the timer; and

configuring the timer according to the duration.

10 . The method of claim 1 , further comprising:

receiving a dormancy state configuration that comprises one or more dormancy parameters for operating in the dormant state or the non-dormant state.

11 . The method of claim 1 , wherein the timer comprises a phr-ProhibitTimer.

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

at least one processor; and

at least one memory coupled with the at least one processor, with instructions stored in the at least one memory, the instructions being executable by the at least one processor to cause the apparatus to:

establish a primary cell connection and a secondary cell connection at the UE;

initiate, at the UE, a timer for power headroom reporting by the UE based at least in part on activating the secondary cell connection;

configure a bandwidth part associated with the secondary cell connection to operate in a dormant state;

receive an indication to configure the bandwidth part to operate in a non-dormant state;

configure the bandwidth part associated with the secondary cell connection to operate in the non-dormant state based at least in part on the indication; and

determine to refrain from transmitting a power headroom report based at least in part on a status of the timer for power headroom reporting and the indication to configure the bandwidth part to operate in the non-dormant state.

13 . The apparatus of claim 12 , wherein the instructions to determine whether to transmit the power headroom report further are executable by the at least one processor to cause the apparatus to:

identify that the timer for power headroom reporting has expired; and

determine to transmit the power headroom report based at least in part on identifying that the timer for power headroom reporting has expired.

14 . The apparatus of claim 13 , wherein the instructions are further executable by the at least one processor to cause the apparatus to:

restart, at the UE, the timer for power headroom reporting by the UE based at least in part on transmitting the power headroom report.

15 . The apparatus of claim 12 , wherein the instructions to determine whether to transmit the power headroom report further are executable by the at least one processor to cause the apparatus to:

identify that the timer for power headroom reporting is active; and

refrain from transmitting the power headroom report based at least in part on identifying that the timer for power headroom reporting is active.

16 . The apparatus of claim 12 , wherein the instructions to receive the indication to configure the bandwidth part to operate in the non-dormant state are executable by the at least one processor to cause the apparatus to:

receive the indication in a physical downlink control channel transmission.

17 . The apparatus of claim 16 , wherein the indication comprises dormancy downlink control information (DCI).

18 . The apparatus of claim 12 , wherein initiating the timer for power headroom reporting is based at least in part on a previous power headroom report transmission.

19 . The apparatus of claim 12 , wherein the instructions to configure the bandwidth part associated with the secondary cell connection to operate in the non-dormant state are executable by the at least one processor to cause the apparatus to:

configure the bandwidth part associated with the secondary cell connection to change from the dormant state to the non-dormant state, wherein the bandwidth part is associated with a medium access control (MAC) entity with configured uplink.

20 . The apparatus of claim 12 , wherein the instructions are further executable by the at least one processor to cause the apparatus to:

receive a downlink control message indicating a duration for the timer; and

configure the timer according to the duration.

21 . The apparatus of claim 12 , wherein the instructions are further executable by the at least one processor to cause the apparatus to:

receive a dormancy state configuration that comprises one or more dormancy parameters for operating in the dormant state or the non-dormant state.

22 . The apparatus of claim 12 , wherein the timer comprises a phr-ProhibitTimer.

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

means for establishing a primary cell connection and a secondary cell connection at the UE;

means for initiating, at the UE, a timer for power headroom reporting by the UE based at least in part on activating the secondary cell connection;

means for configuring a bandwidth part associated with the secondary cell connection to operate in a dormant state;

means for receiving an indication to configure the bandwidth part to operate in a non-dormant state;

means for configuring the bandwidth part associated with the secondary cell connection to operate in the non-dormant state based at least in part on the indication; and

means for determining to refrain from transmitting a power headroom report based at least in part on a status of the timer for power headroom reporting and the indication to configure the bandwidth part to operate in the non-dormant state.

24 . The apparatus of claim 23 , wherein the means for determining whether to transmit the power headroom report further comprises:

means for identifying that the timer for power headroom reporting has expired; and

means for determining to transmit the power headroom report based at least in part on identifying that the timer for power headroom reporting has expired.

25 . The apparatus of claim 24 , further comprising:

means for restarting, at the UE, the timer for power headroom reporting by the UE based at least in part on transmitting the power headroom report.

26 . The apparatus of claim 23 , wherein the means for determining whether to transmit the power headroom report further comprises:

means for identifying that the timer for power headroom reporting is active; and

means for refraining from transmitting the power headroom report based at least in part on identifying that the timer for power headroom reporting is active.

27 . The apparatus of claim 23 , wherein the means for receiving the indication to configure the bandwidth part to operate in the non-dormant state comprises:

means for receiving the indication in a physical downlink control channel transmission.

28 . The apparatus of claim 27 , wherein the indication comprises dormancy downlink control information (DCI).

29 . The apparatus of claim 23 , wherein initiating the timer for power headroom reporting is based at least in part on a previous power headroom report transmission.

30 . The apparatus of claim 23 , wherein the means for configuring the bandwidth part associated with the secondary cell connection to operate in the non-dormant state comprises:

means for configuring the bandwidth part associated with the secondary cell connection to change from the dormant state to the non-dormant state, wherein the bandwidth part is associated with a medium access control (MAC) entity with configured uplink.

31 . The apparatus of claim 23 , further comprising:

means for receiving a downlink control message indicating a duration for the timer; and

means for configuring the timer according to the duration.

32 . The apparatus of claim 23 , further comprising:

means for receiving a dormancy state configuration that comprises one or more dormancy parameters for operating in the dormant state or the non-dormant state.

33 . A non-transitory computer-readable medium storing code for wireless communications at a user equipment (UE), the code comprising instructions executable by a processor to:

establish a primary cell connection and a secondary cell connection at the UE;

initiate, at the UE, a timer for power headroom reporting by the UE based at least in part on activating the secondary cell connection;

configure a bandwidth part associated with the secondary cell connection to operate in a dormant state;

receive an indication to configure the bandwidth part to operate in a non-dormant state;

configure the bandwidth part associated with the secondary cell connection to operate in the non-dormant state based at least in part on the indication; and

determine to refrain from transmitting a power headroom report based at least in part on a status of the timer for power headroom reporting and the indication to configure the bandwidth part to operate in the non-dormant state.

Assignments (2)

Continuity (1)

References Cited (13)