Granted Patent B2

US 12,267,789 · App. 17/913,980 · Granted Apr 1, 2025

Inventors: Donggun Kim (Suwon-si, KR); Soenghun Kim (Suwon-si, KR)

Assignee: Samsung Electronics Co., Ltd.

H04W52/365H04L5/0098H04W72/231

Abstract

Claims (53)

1. A method performed by a terminal in a wireless communication system, the method comprising:

receiving, from a base station, a message including information for configuring a plurality of serving cells for the terminal;

identifying whether a predetermined event for triggering a power headroom report (PHR) is occurred;

in case that the predetermined event is occurred, obtaining a power headroom (PH) value for an uplink carrier corresponding to an activated serving cell of the plurality of serving cells; and

transmitting, to the base station, the PHR including the obtained PH value,

wherein an activated downlink bandwidth part (BWP) of the activated serving cell is not a dormant BWP.

2. The method of claim 1 ,

wherein the predetermined event includes an expiration of a prohibition timer for the PHR and a change of path loss for at least one activated serving cells being more than a threshold value, and

wherein an activated downlink BWP of the at least one serving cell is not the dormant BWP.

3. The method of claim 1 ,

wherein the predetermined event includes an activation of one serving cell of the plurality of serving cells,

wherein information on an identifier (ID) of a first active downlink BWP to be used based on the activation of the one serving cell is configured for the one serving cell by the message, and

wherein the ID of the first active downlink BWP for the one serving cell is not set to the dormant BWP.

4. The method of claim 1 , wherein the predetermined event includes a switching from the dormant BWP to a non-dormant BWP for one serving cell of the plurality of serving cells.

5. The method of claim 1 ,

wherein the message further includes configuration information on the PHR, and

wherein the configuration information includes information indicating that the PHR is to be reported by using a multiple entry PHR medium access control (MAC) control elements (CEs).

6. The method of claim 1 ,

wherein the message includes configuration information on a secondary cell (SCell) among the plurality of serving cells, and

wherein the configuration information on the SCell includes configuration information on the dormant BWP.

7. A terminal in a wireless communication system, the terminal comprising:

a transceiver; and

a controller configured to:

control the transceiver to receive, from a base station, a message including information for configuring a plurality of serving cells for the terminal,

identify whether a predetermined event for triggering a power headroom report (PHR) is occurred,

in case that the predetermined event is occurred, obtain a power headroom (PH) value for an uplink carrier corresponding to an activated serving cell of the plurality of serving cells, and

control the transceiver to transmit, to the base station, the PHR including the obtained PH value,

wherein an activated downlink bandwidth part (BWP) of the activated serving cell is not a dormant BWP.

8. The terminal of claim 7 ,

wherein the predetermined event includes an expiration of a prohibition timer for the PHR and a change of path loss for at least one activated serving cells being more than a threshold value, and

wherein an activated downlink BWP of the at least one serving cell is not the dormant BWP.

9. The terminal of claim 7 ,

wherein the predetermined event includes an activation of one serving cell of the plurality of serving cells,

wherein information on an identifier (ID) of a first active downlink BWP to be used based on the activation of the one serving cell is configured for the one serving cell by the message, and

wherein the ID of the first active downlink BWP for the one serving cell is not set to the dormant BWP.

10. The terminal of claim 7 , wherein the predetermined event includes a switching from the dormant BWP to a non-dormant BWP for one serving cell of the plurality of serving cells.

11. The terminal of claim 7 ,

wherein the message further includes configuration information on the PHR, and

wherein the configuration information includes information indicating that the PHR is to be reported by using a multiple entry PHR medium access control (MAC) control elements (CEs).

12. The terminal of claim 7 ,

wherein the message includes configuration information on a secondary cell (SCell) among the plurality of serving cells, and

wherein the configuration information on the SCell includes configuration information on the dormant BWP.

13. A method performed by a base station in a wireless communication system, the method comprising:

transmitting, to a terminal, a message including information for configuring a plurality of serving cells for the terminal and configuration information on a power headroom report (PHR); and

receiving, from the terminal, the PHR including a power headroom (HR) value for an uplink carrier corresponding to an activated serving cell of the plurality of serving cells, based on the message,

wherein an activated downlink bandwidth part (BWP) of the activated serving cell is not a dormant BWP.

14. The method of claim 13 ,

wherein the PHR is triggered based on an expiration of a prohibition timer for the PHR and a change of path loss for at least one activated serving cells being more than a threshold value, and

wherein an activated downlink BWP of the at least one serving cell is not the dormant BWP.

15. The method of claim 13 ,

wherein the PHR is triggered based on an activation of one serving cell of the plurality of serving cells,

wherein information on an identifier (ID) of a first active downlink BWP to be used based on the activation of the one serving cell is configured for the one serving cell by the message, and

wherein the ID of the first active downlink BWP for the one serving cell is not set to the dormant BWP.

Assignments (1)

Priority Claims (3)

Continuity (1)

References Cited (50)