Granted Patent B2

US 12,267,834 · App. 17/762,328 · Granted Apr 1, 2025

Inventors: Hongchao Li (Langen, DE); Hidetoshi Suzuki (Kanagawa, JP); Quan Kuang (Langen, DE); Tiong Hou Teo (Singapore, SG)

Assignee: Panasonic Intellectual Property Corporation of America

H04W72/1273H04W72/044H04W72/20H04W72/569

Abstract

Claims (56)

1. A communication apparatus comprising:

a transceiver that, in operation, receives downlink control information (DCI) signaling; and

a circuitry that, in operation:

obtains, from the DCI signaling, an indication that is related to a dormancy behavior of a secondary cell (Scell); and

if the indication indicates a non-dormancy behavior, determines a target BWP for performing the non-dormancy behavior in accordance with a preconfigured BWP,

wherein:

if the DCI signaling is a first DCI signaling, the indication is related to the dormancy behavior within an active time, and

if the DCI signaling is a second DCI signaling, the indication is related to the dormancy behavior outside the active time.

2. The communication apparatus according to claim 1 , wherein

the preconfigured BWP is:

configured by Radio Resource Control (RRC) signaling,

a BWP with a lowest index,

a BWP with a highest index, or

indicated explicitly by a base station.

3. The communication apparatus according to claim 1 , wherein the preconfigured BWP is a default BWP which is configured as a normal BWP.

4. The communication apparatus according to claim 1 , wherein

the circuitry, in operation, if the indication indicates transitioning from the dormancy behavior to the non-dormancy behavior:

transitions from the dormancy behavior to the non-dormancy behavior for the Scell, and

performs the non-dormancy behavior in the determined target BWP.

5. The communication apparatus according to claim 1 , wherein the circuitry, in operation, determines the target BWP in accordance with at least one of:

a priority order of one or more normal BWPs,

a legacy BWP indicator field in the DCI signaling,

a most recently active normal BWP, or

a dormant BWP.

6. The communication apparatus according to claim 5 , wherein the circuitry determines the target BWP based on an index indicated by the legacy BWP indicator field.

7. The communication apparatus according to claim 6 , wherein,

if the index corresponds to an index of a normal BWP of the one or more normal BWPs, the circuitry determines that the target BWP is said normal BWP; and

if the index corresponds to an index of the dormant BWP the circuitry determines:

that the target BWP is the dormant BWP; or

the target BWP according to a predetermined or predefined method.

8. The communication apparatus according to claim 5 , wherein the circuitry determines that the target BWP is that normal BWP that has been active most recently among the one or more normal BWPs.

9. The communication apparatus according to claim 5 , wherein the circuitry determines that the target BWP is the dormant BWP.

10. The communication apparatus according to claim 5 , wherein, in the priority order, for each normal BWP, a priority of the normal BWP increases with an increasing overlap in bandwidth of the normal BWP and the dormant BWP.

11. The communication apparatus according to claim 5 , wherein, in the priority order, for each normal BWP, a priority of the normal BWP increases with decreasing difference between a central frequency of the normal BWP and a central frequency of the dormant BWP.

12. A method for a communication apparatus comprising

receiving downlink control information (DCI) signaling;

obtaining, from the DCI signaling, an indication that is related to a dormancy behavior of a secondary cell (Scell); and

if the indication indicates a non-dormancy behavior, determining a target BWP for performing the non-dormancy behavior in accordance with a preconfigured BWP,

wherein:

if the DCI signaling is a first DCI signaling, the indication is related to the dormancy behavior within an active time, and

if the DCI signaling is a second DCI signaling, the indication is related to the dormancy behavior outside the active time.

13. A non-transitory computer-readable recording medium storing a program which, when executed by one or more processors, causes the one or more processors to carry out the steps of the method according to claim 12 .

14. A network node, comprising:

a transceiver that, in operation, transmits downlink control information (DCI) signaling that is addressed to a user equipment (UE), wherein

the DCI signaling includes an indication that is related to a dormancy behavior of a secondary cell (Scell) of the UE; and

a circuitry that, in operation, if the indication indicates a non-dormancy behavior, determines a target BWP for performing the non-dormancy behavior in accordance with a preconfigured BWP,

wherein:

if the DCI signaling is a first DCI signaling, the indication is related to the dormancy behavior within an active time, and

if the DCI signaling is a second DCI signaling, the indication is related to the dormancy behavior outside the active time.

15. A method for a network node, comprising:

transmitting downlink control information (DCI) signaling that is addressed to a user equipment (UE), wherein

the DCI signaling includes an indication that is related to a dormancy behavior of a secondary cell (Scell) of the UE; and

if the indication indicates a non-dormancy behavior, determining a target BWP for performing the non-dormancy behavior in accordance with a preconfigured BWP,

wherein:

if the DCI signaling is a first DCI signaling, the indication is related to the dormancy behavior within an active time, and

if the DCI signaling is a second DCI signaling, the indication is related to the dormancy behavior outside the active time.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (34)