Granted Patent B2

US 12,593,340 · App. 18/447,237 · Granted Mar 31, 2026

Inventors: Ebrahim MolavianJazi (San Jose, CA); Emad Nader Farag (Flanders, NJ); Dalin Zhu (Allen, TX); Aristides Papasakellariou (Houston, TX); Eko Onggosanusi (Coppell, TX)

Assignee: Samsung Electronics Co., Ltd.

H04W72/232H04L5/0092H04W72/1273

Abstract

Claims (131)

1 . A method comprising:

receiving:

first information for a set of cells,

second information for sets of transmission configuration indication (TCI) states associated with cells in the set of cells, respectively, and

a first physical downlink control channel (PDCCH) that provides a first DCI format, wherein:

the first DCI format schedules receptions of a first number of physical downlink shared channels (PDSCHs) on a first number of cells from the set of cells,

the first DCI format includes a first TCI field indicating a combination of TCI states,

the combination of TCI states includes a number of TCI states that is equal to a number of cells in the set of cells, and

TCI states in the combination of TCI states have a one-to-one mapping to the cells in the set of cells;

determining first TCI states, from the combination of TCI states, having a one-to-one mapping with the first number of cells; and

receiving the first number of PDSCHs, or a second number of PDSCHs after the first number of PDSCHs, on the first number of cells based on the first TCI states, respectively.

2 . The method of claim 1 , further comprising:

receiving a second PDCCH that provides a second DCI format, wherein:

the second PDCCH reception ends after an end of the first PDCCH reception,

the second DCI format schedules a reception of a second PDSCH on a second cell from the set of cells, and

the second cell is not among the first number of cells;

determining a second TCI state, from the combination of TCI states, that is associated with the second cell; and

receiving the second PDSCH on the second cell based on the second TCI state.

3 . The method of claim 1 , further comprising:

receiving third information for a list of cells for a simultaneous TCI state update, wherein the list of cells includes a first cell and a second cell from the first number of cells; and

determining:

a first TCI state, from the first TCI states, associated with the first cell,

a second TCI state, from the first TCI states, associated with the second cell, and

that the first TCI state is the same as the second TCI state.

4 . The method of claim 1 , further comprising:

receiving third information for a list of cells for a simultaneous TCI state update, wherein the list of cells includes a first cell from the first number of cells; and

determining:

a first TCI state, from the first TCI states, associated with the first cell, and

that the first TCI state is additionally associated with all other cells from the list of cells.

5 . The method of claim 1 , wherein:

the combination of TCI states is from a list of combinations of TCI states,

the list of combinations of TCI states is provided by first radio resource control (RRC) information, and the sets of TCI states are provided by second RRC information or activated by first medium access control control-elements (MAC-CEs).

6 . The method of claim 1 , further comprising:

receiving a second PDCCH that provides a second DCI format, wherein:

an end of the first PDCCH reception is after an end of the second PDCCH reception, and

the second DCI format includes a second TCI field that indicates a second TCI state for a first cell from the set of cells; and

receiving a first PDSCH, or a second PDSCH after the first PDSCH, on the first cell based on the second TCI state, wherein:

the first DCI format further schedules reception of the first PDSCH on the first cell,

the combination of TCI states includes a first TCI state having a one-to-one mapping with the first cell,

the first TCI state is not included in a set of TCI states that is associated with the first cell, and

the second TCI state is included in the set of TCI states that is associated with the first cell.

7 . The method of claim 1 , wherein:

the set of TCI states includes up to eight TCI states, and

the first TCI field indicates a value from up to 16 values.

8 . A user equipment (UE) comprising:

a transceiver configured to receive:

first information for a set of cells,

second information for sets of transmission configuration indication (TCI) states associated with cells in the set of cells, respectively, and

a first physical downlink control channel (PDCCH) that provides a first DCI format, wherein:

the first DCI format schedules receptions of a first number of physical downlink shared channels (PDSCHs) on a first number of cells from the set of cells,

the first DCI format includes a first TCI field indicating a combination of TCI states,

the combination of TCI states includes a number of TCI states that is equal to a number of cells in the set of cells, and

the TCI states in the combination of TCI states have a one-to-one mapping to the cells in the set of cells; and

a processor operably coupled to the transceiver, the processor configured to determine first TCI states, from the combination of TCI states, having a one-to-one mapping with the first number of cells,

wherein the transceiver is further configured to receive the first number of PDSCHs, or a second number of PDSCHs after the first number of PDSCHs, on the first number of cells based on the first TCI states, respectively.

9 . The UE of claim 8 , wherein:

the transceiver is further configured to receive a second PDCCH that provides a second DCI format,

the second PDCCH reception ends after an end of the first PDCCH reception,

the second DCI format schedules a reception of a second PDSCH on a second cell from the set of cells,

the second cell is not among the first number of cells,

the processor is further configured to determine a second TCI state, from the combination of TCI states, that is associated with the second cell, and

the transceiver is further configured to receive the second PDSCH on the second cell based on the second TCI state.

10 . The UE of claim 8 , wherein:

the transceiver is further configured to receive third information for a list of cells for a simultaneous TCI state update;

the list of cells includes a first cell and a second cell from the first number of cells; and

the processor is further configured to determine:

a first TCI state, from the first TCI states, associated with the first cell,

a second TCI state, from the first TCI states, associated with the second cell, and

that the first TCI state is the same as the second TCI state.

11 . The UE of claim 8 , wherein:

the transceiver is further configured to receive third information for a list of cells for a simultaneous TCI state update;

the list of cells includes a first cell from the first number of cells; and

the processor is further configured to determine:

a first TCI state, from the first TCI states, associated with the first cell, and

that the first TCI state is additionally associated with all other cells from the list of cells.

12 . The UE of claim 8 , wherein:

the combination of TCI states is from a list of combinations of TCI states,

the list of combinations of TCI states is provided by first radio resource control (RRC) information, and the sets of TCI states are provided by second RRC information or activated by first medium access control control-elements (MAC-CEs).

13 . The UE of claim 8 , wherein:

the transceiver is further configured to receive a second PDCCH that provides a second DCI format;

an end of the first PDCCH reception is after an end of the second PDCCH reception;

the second DCI format includes a second TCI field that indicates a second TCI state for a first cell from the set of cells;

the transceiver is further configured to receive a first PDSCH, or a second PDSCH after the first PDSCH, on the first cell based on the second TCI state;

the first DCI format further schedules reception of the first PDSCH on the first cell;

the combination of TCI states includes a first TCI state having a one-to-one mapping with the first cell;

the first TCI state is not included in a set of TCI states that is associated with the first cell; and

the second TCI state is included in the set of TCI states that is associated with the first cell.

14 . The UE of claim 8 , wherein:

the set of TCI states includes up to eight TCI states, and

the first TCI field indicates a value from up to 16 values.

15 . A base station comprising:

a transceiver configured to transmit:

first information for a set of cells,

second information for sets of transmission configuration indication (TCI) states associated with the cells in the set of cells, respectively, and

a first physical downlink control channel (PDCCH) that provides a first DCI format, wherein:

the first DCI format schedules transmissions of a first number of physical downlink shared channels (PDSCHs) on a first number of cells from the set of cells,

the first DCI format includes a first TCI field indicating a combination of TCI states,

the combination of TCI states includes a number of TCI states that is equal to a number of cells in the set of cells, and

the TCI states in the combination of TCI states have a one-to-one mapping to the cells in the set of cells; and

a processor operably coupled to the transceiver, the processor configured to determine first TCI states, from the combination of TCI states, having a one-to-one mapping with the first number of cells,

wherein the transceiver is further configured to transmit the first number of PDSCHs, or a second number of PDSCHs after the first number of PDSCHs, on the first number of cells based on the first TCI states, respectively.

16 . The base station of claim 15 , wherein:

the transceiver is further configured to transmit a second PDCCH that provides a second DCI format,

the second PDCCH transmission ends after an end of the first PDCCH transmission,

the second DCI format schedules a transmission of a second PDSCH on a second cell from the set of cells, wherein the second cell is not among the first number of cells,

the processor is further configured to determine a second TCI state, from the combination of TCI states, that is associated with the second cell, and

the transceiver is further configured to transmit the second PDSCH on the second cell based on the second TCI state.

17 . The base station of claim 15 , wherein:

the transceiver is further configured to transmit third information for a list of cells for a simultaneous TCI state update;

the list of cells includes a first cell and a second cell from the first number of cells; and

the processor is further configured to determine:

a first TCI state, from the first TCI states, associated with the first cell,

a second TCI state, from the first TCI states, associated with the second cell, and

that the first TCI state is the same as the second TCI state.

18 . The base station of claim 15 , wherein:

the transceiver is further configured to transmit third information for a list of cells for a simultaneous TCI state update, wherein the list of cells includes a first cell from the first number of cells; and

the processor is further configured to determine:

a first TCI state, from the first TCI states, associated with the first cell, and

that the first TCI state is additionally associated with all other cells from the list of cells.

19 . The base station of claim 15 , wherein:

the combination of TCI states is from a list of combinations of TCI states,

the list of combinations of TCI states is provided by radio resource control (RRC) information, and the sets of TCI states are provided by second RRC information or activated by first medium access control control-elements (MAC-CEs).

20 . The base station of claim 15 , wherein:

the transceiver is further configured to transmit a second PDCCH that provides a second DCI format;

an end of the first PDCCH transmission is after an end of the second PDCCH transmission;

the second DCI format includes a second TCI field that indicates a second TCI state for a first cell from the set of cells;

the transceiver is further configured to transmit a first PDSCH, or a second PDSCH after the first PDSCH, on the first cell based on the second TCI state;

the first DCI format further schedules reception of the first PDSCH on the first cell;

the combination of TCI states includes a first TCI state having a one-to-one mapping with the first cell;

the first TCI state is not included in a set of TCI states that is associated with the first cell; and

the second TCI state is included in the set of TCI states that is associated with the first cell.

Assignments (1)

Continuity (4)

References Cited (32)