Granted Patent B2

US 12,640,860 · App. 18/159,949 · Granted May 26, 2026

Inventors: Kyoungmin Park (Suwon-si, KR); Ameha Tsegaye Abebe (Suwon-si, KR); Seongmok Lim (Suwon-si, KR); Youngrok Jang (Suwon-si, KR); Hyoungju Ji (Suwon-si, KR)

Assignee: Samsung Electronics Co., Ltd.

H04L5/0035H04L5/0053H04W72/232

Abstract

Claims (54)

1 . A method of a user equipment (UE) in a wireless communication system, the method comprising:

receiving, from a first transmission reception point, TRP, a configuration information for a plurality of transmission configuration indicator (TCI) state including a common TCI state for a control resource set (CORESET), and physical downlink shared channel, PDSCH, for the first TRP, and a TCI state for a PDSCH for a second TRP;

receiving, from the first TRP, a first downlink control information (DCI), via a physical downlink control channel (PDCCH), the first DCI including information indicating a first TCI state for the first TRP and a second TCI state for the second TRP;

transmitting, to the first TRP, a first acknowledgement (ACK) indicating successful reception of the first TCI state and the second TCI state;

receiving, from the first TRP, a second DCI based on the first TCI state via the PDCCH, the second DCI including information indicating a third TCI state for the first TRP and a fourth TCI state for the second TRP; and

receiving, from the second TRP, the PDSCH based on the fourth TCI state without transmitting a second ACK indicating successful reception of the third TCI state and the fourth TCI state to the first TRP.

2 . The method of claim 1 , further comprising:

applying a TCI state TRP from the first TCI state to the third TCI state after transmitting the second ACK to the first TRP.

3 . The method of claim 2 , wherein the third TCI state is applied after a beam application time.

4 . The method of claim 1 ,

wherein TCI state for the first TCI state is a permanent type TCI state, P-TCI state, and

wherein TCI state for the second TCI state is a temporary type TCI state, TPT-TCI state.

5 . A method of a base station in a wireless communication system, the method comprising:

transmitting, to a user equipment (UE), via a first transmission reception point, TRP, a configuration information for a plurality of transmission configuration indicator (TCI) state including a common TCI state for a control resource set (CORESET), and physical downlink shared channel, PDSCH, for the first TRP, and a TCI state for a PDSCH for a second TRP;

transmitting, to the UE via the first TRP, a first downlink control information (DCI), via a physical downlink control channel (PDCCH), the first DCI including information indicating a first TCI state for the first TRP and a second TCI state for the second TRP;

receiving, from the UE via the first TRP, a first acknowledgement (ACK) indicating successful reception and of the first TCI state and the second TCI state;

transmitting, to the UE via the first TRP, a second DCI based on the first TCI state via the PDCCH, the second DCI including information indicating a third TCI state for the first TRP and a fourth TCI state for the second TRP; and

transmitting, to the UE via the second TRP, the PDSCH based on the fourth TCI state without receiving a second ACK indicating successful reception of the third TCI state and the fourth TCI state from the first TRP.

6 . The method of claim 5 ,

wherein a TCI state for the first TRP from the first TCI state to the third TCI state is applied after receiving the second ACK from the first TRP.

7 . The method of claim 6 , wherein the third TCI state is applied after a beam application time.

8 . The method of claim 5 ,

wherein TCI state of for the first TCI state is a permanent type TCI state, P-TCI state, and

wherein TCI state of for the second TCI state is a temporary type TCI state, TPT-TCI state.

9 . A user equipment (UE) in a wireless communication system, the UE comprising:

at least one transceiver;

at least one processor communicatively coupled to the at least one transceiver; and

at least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor individually or in any combination to cause the UE to:

receive, from a first transmission reception point, TRP, a configuration information for a plurality of transmission configuration indicator (TCI) state including a common TCI state for a control resource set (CORESET), and physical downlink shared channel, PDSCH, for the first TRP, and a TCI state for a PDSCH for a second TRP,

receive, from the first TRP, a first downlink control information (DCI), via a physical downlink control channel (PDCCH), the first DCI including information indicating a first TCI state for the first TRP and a second TCI state for the second TRP,

transmit, to the first TRP, a first acknowledgement (ACK) indicating successful reception of the first TCI state and the second TCI state,

receive, from the first TRP, a second DCI based on the first TCI state via the PDCCH, the second DCI including information indicating a third TCI state for the first TRP and a fourth TCI state for the second TRP, and

receive, from the second TRP, the PDSCH based on the fourth TCI state without transmitting a second ACK indicating successful reception of the third TCI state and the fourth TCI state to the first TRP.

10 . The UE of claim 9 ,

wherein the instructions further cause the UE to apply a TCI state for the first TRP from the first TCI state to the third TCI state after transmitting the second ACK to the first TRP.

11 . The UE of claim 10 , wherein the third TCI state is applied after a beam application time.

12 . The UE of claim 9 ,

wherein TCI state of for the first TCI state is a permanent type TCI state, P-TCI state, and

wherein TCI state for the second TCI state is a temporary type TCI state, TPT-TCI state.

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

at least one transceiver;

at least one processor communicatively coupled to the at least one transceiver; and

at least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor individually or in any combination to cause the base station to:

transmit, to a user equipment (UE), via a first transmission reception point, TRP, a configuration information for a plurality of transmission configuration indicator (TCI) state including a common TCI state for a control resource set (CORESET), and physical downlink shared channel, PDSCH, for the first TRP, and a TCI state for a PDSCH for a second TRP,

transmit, to the UE via the first TRP, a first downlink control information (DCI), via a physical downlink control channel (PDCCH), the first DCI including information indicating a first TCI state for the first TRP and a second TCI state for the second TRP,

receive, from the UE via the first TRP, a first acknowledgement (ACK) indicating successful reception of the first TCI state and the second TCI state,

transmit, to the UE via the first TRP, a second DCI based on the first TCI state via the PDCCH, the second DCI including information indicating a third TCI state for the first TRP and a fourth TCI state for the second TRP, and

transmit, to the UE via the second TRP, the PDSCH based on the fourth TCI state without receiving a second ACK indicating successful reception of the third TCI state and the fourth TCI state from the first TRP.

14 . The base station of claim 13 ,

wherein a TCI state for the first TRP from the first TCI state to the third TCI state is applied after receiving the second ACK from the first TRP.

15 . The base station of claim 14 , wherein the third TCI state is applied after a beam application time.

16 . The base station of claim 13 ,

wherein TCI state of for the first TCI state is a permanent type TCI state, P-TCI state, and

wherein TCI state for the second TCI state is a temporary type TCI state, TPT-TCI state.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (28)