Granted Patent B2

US 12,628,002 · App. 18/250,301 · Granted May 12, 2026

Inventors: Hui Li (Beijing, CN); Runhua Chen (Beijing, CN); Qiubin Gao (Beijing, CN); Yajuan Luo (Beijing, CN)

Assignee: Datang Mobile Communications Equipment Co., Ltd.

H04W16/28H04B7/06968H04W52/146

Abstract

Claims (61)

1 . A beam indication method, comprising:

receiving a beam indication message from a base station, wherein the beam indication message comprises a first transmission configuration indication (TCI) state ID;

obtaining a first TCI state corresponding to the first TCI state ID from a TCI state pool, wherein an information field of the first TCI state at most comprises two groups of source reference signal information for indicating beam directions; and

determining a beam direction corresponding to an uplink channel and/or a downlink channel based on the source reference signal information for indicating beam directions;

wherein the method further comprises:

receiving a TCI state pool configuration message from the base station, wherein the TCI state pool configuration message comprises an information field of each TCI state, and the information field of each TCI state at most comprises two groups of source reference signal information for indicating beam directions;

receiving an intermediate activation TCI state configuration message from the base station, wherein the intermediate activation TCI state configuration message comprises S TCI state IDs, the TCI state pool comprises T TOI states, and S is a positive integer and is less than or equal to T; and

selecting S TCI states corresponding to the S TOI state IDs from the TCI state pool respectively.

2 . The method of claim 1 , wherein the information field further comprises at least one quasi co-location (QCL) field, and determining the beam direction corresponding to the uplink channel and/or the downlink channel based on the source reference signal information for indicating beam directions comprises:

determining a target channel indicated by the first TCI state based on a state of each QCL field in the information field; and

determining a beam direction corresponding to the target channel based on the source reference signal information for indicating beam directions.

3 . The method of claim 1 , wherein the information field further comprises M QCL fields and N IDs for indicating types of channels to which the M QCL fields belong, M and N are positive integers and N is less than or equal to M, and determining the beam direction corresponding to the uplink channel and/or the downlink channel based on the source reference signal information comprises:

determining a target channel indicated by the first TCI state based on the N IDs in the information field; and

determining a beam direction corresponding to the target channel based on the source reference signal information for indicating beam directions.

4 . The method of claim 1 , wherein the source reference signal information for indicating beam directions in the information field of each TCI state of the TCI state pool configuration message is different, and/or, a channel type corresponding to the information field of each TCI state of the TCI state pool is different.

5 . The method of claim 1 , wherein the information field of each TCI state of the TCI state pool configuration message further comprises K groups of uplink power control parameters corresponding to each uplink TCI state, and K is a positive integer.

6 . The method of claim 1 , wherein the TCI state pool configuration message comprises at least one group of uplink power control parameters corresponding to each TCI state.

7 . The method of claim 1 , further comprising:

receiving an uplink power control parameter configuration message from the base station, wherein the uplink power control parameter configuration message comprises at least one group of uplink power control parameters.

8 . The method of claim 1 , further comprising:

receiving an uplink power control parameter configuration message from the base station, wherein the uplink power control parameter configuration message comprises at least one group of uplink power control parameters corresponding to each TCI state in the TCI state pool.

9 . The method of claim 1 , further comprising:

receiving an uplink power control parameter activation message from the base station, wherein the uplink power control parameter activation message comprises an ID of at least one group of uplink power control parameters; and

activating at least one group of uplink power control parameters corresponding to the ID of at least one group of uplink power control parameters;

wherein the at least one group of uplink power control parameters after the activating is associated with TCI states in the S TCI states corresponding to the S TCI state IDs.

10 . The method of claim 9 , further comprising:

associating each TCI state in the S TCI states corresponding to the S TCI state IDs with an activated group of uplink power control parameters based on preset rules.

11 . The method of claim 1 , further comprising:

receiving an uplink power control parameter activation message from the base station, wherein the uplink power control parameter activation message is configured to activate a group of uplink power control parameters associated with a second TCI state, and the second TCI state is a TCI state in the S TCI states corresponding to the S TCI state IDs.

12 . A beam indication method, comprising:

determining a first TCI state, wherein an information field of the first TCI state at most comprises two groups of source reference signal information for indicating beam directions; and

sending a beam indication message to a terminal, wherein the beam indication message comprises a first TCI state ID;

wherein the method further comprises:

sending a TCI state pool configuration message to the terminal, wherein the TCI state pool configuration message comprises an information field of each TCI state, and each TCI state at most comprises two groups of source reference signal information for indicating beam directions;

sending an intermediate activation TCI state configuration message to the terminal, to enable the terminal to select S TOI states corresponding to S TCI state IDs from the TCI state pool respectively, wherein the intermediate activation TOI state configuration message comprises the S TCI state IDs, the TCI state pool comprises T TCI states, and S is a positive integer and is less than or equal to T.

13 . The method of claim 12 , wherein determining the first TCI state comprises:

determining a state of each QCL field in the information field of the first TCI state; or

determining a number of QCL fields contained in the information field of the first TCI state and corresponding QCL field IDs.

14 . The method of claim 12 , wherein the source reference signal information for indicating beam directions in the information field of each TCI state of the TCI state pool configuration message is different, and/or, a channel type corresponding to the information field of each TCI state of the TCI state pool is different;

wherein the information field of each TCI state of the TCI state pool configuration message further comprises K groups of uplink power control parameters corresponding to each uplink TCI state, and K is a positive integer; or

the TCI state pool configuration message comprises at least one group of uplink power control parameters corresponding to each TCI state.

15 . The method of claim 12 , further comprising:

sending an uplink power control parameter configuration message to the terminal, wherein the uplink power control parameter configuration message comprises at least one group of uplink power control parameters; or

sending an uplink power control parameter configuration message to the terminal, wherein the uplink power control parameter configuration message comprises at least one group of uplink power control parameters corresponding to each TCI state in the TCI state pool; or

sending an intermediate activation TCI state configuration message to the terminal, wherein the intermediate activation TCI state configuration message comprises S TCI state IDs, the TCI state pool comprises T TCI states, and S is a positive integer and is less than or equal to T.

16 . A terminal comprising: a memory, a transceiver, and a processor,

wherein the memory is configured to store computer programs, the transceiver is configured to send and receive data under a control of the processor, and the processor is configured to read the computer programs stored in the memory to perform the following operations:

receiving a beam indication message from a base station, wherein the beam indication message comprises a first TCI state ID;

obtaining a first TCI state corresponding to the first TCI state ID from a TCI state pool, wherein an information field of the first TCI state at most comprises two groups of source reference signal information for indicating beam directions; and

determining a beam direction corresponding to an uplink channel and/or a downlink channel based on the source reference signal information for indicating beam directions;

wherein the processor is further configured to read the computer programs stored in the memory to perform:

receiving a TCI state pool configuration message from the base station, wherein the TCI state pool configuration message comprises an information field of each TOI state, and the information field of each TCI state at most comprises two groups of source reference signal information for indicating beam directions;

receiving an intermediate activation TCI state configuration message from the base station, wherein the intermediate activation TOI state configuration message comprises S TCI state IDs, the TCI state pool comprises T TCI states, and S is a positive integer and is less than or equal to T; and

selecting S TCI states corresponding to the S TCI state IDs from the TCI state pool respectively.

17 . A network-side device comprising: a memory, a transceiver and a processor,

wherein the memory is configured to store computer programs, the transceiver is configured to send and receive data under a control of the processor, and the processor is configured to read the computer programs stored in the memory to perform the following operations:

determining a first TCI state, wherein an information field of the first TCI state at most comprises two groups of source reference signal information for indicating beam directions; and

sending a beam indication message to a terminal, wherein the beam indication message comprises a first TCI state ID;

wherein the processor is further configured to read the computer programs stored in the memory to perform:

sending a TOI state pool configuration message to the terminal, wherein the TCI state pool configuration message comprises an information field of each TCI state, and each TCI state at most comprises two groups of source reference signal information for indicating beam directions;

sending an intermediate activation TOI state configuration message to the terminal, to enable the terminal to select S TCI states corresponding to S TOI state IDs from the TOI state pool respectively, wherein the intermediate activation TCI state configuration message comprises the S TCI state IDs, the TCI state pool comprises T TCI states, and S is a positive integer and is less than or equal to T.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (18)