Granted Patent B2

US 12,550,138 · App. 18/012,389 · Granted Feb 10, 2026

Inventors: Hyungtae Kim (Seoul, KR); Jiwon Kang (Seoul, KR); Haewook Park (Seoul, KR)

Assignee: LG ELECTRONICS INC.

H04W72/1268H04B7/0639H04W72/232

Abstract

Claims (40)

1 . A method comprising:

receiving, by a terminal, from a base station, downlink control information for scheduling a physical uplink channel; and

transmitting, to the base station, the physical uplink channel based on information for a transmission precoding matrix and information for a transmission rank in the downlink control information,

wherein the physical uplink channel is transmitted in a plurality of transmission occasions (TOs),

wherein the plurality of TOs are divided into N (N is an integer greater than 0) TO groups including one or more TOs,

wherein the physical uplink channel is transmitted based on a precoding vector group related to a TO group in which the physical uplink channel is transmitted,

wherein a precoding matrix determined based on the downlink control information comprises a plurality of column vectors, and

wherein the precoding vector group is determined as one or more column vectors from the plurality of column vectors.

2 . The method of claim 1 , wherein a first precoding vector group applied to a physical uplink channel transmitted in a first TO group is determined as column vectors for the ceil(the transmission rank/2)th layer from a precoding vector for a first layer,

wherein a second precoding vector group applied to a physical uplink channel transmitted in a second TO group is determined as column vectors for the remaining layers,

wherein ceil(x) is the smallest integer not less than x.

3 . The method of claim 1 , wherein the precoding vector group is determined as one or more column vectors comprising a non-zero element for a specific antenna port from the plurality of column vectors.

4 . The method of claim 1 , wherein the precoding vector group is determined as column vectors for all layers in a precoding matrix in which elements for some antenna ports in the precoding matrix are reset to zero.

5 . The method of claim 4 , wherein if the transmission rank is 2, the precoding vector group is determined as a column vector for a first layer in which elements for some antenna ports in the precoding matrix are reset to 0 and a column vector for a second layer in which elements of remaining antenna ports are reset to 0.

6 . The method of claim 1 , wherein in each TO, the physical uplink channel is transmitted based on a column vector for a single layer in a precoding vector group related to a TO group in which the physical uplink channel is transmitted.

7 . The method of claim 6 , wherein the precoding vector for the single layer for each TO in which the physical uplink channel is transmitted in the TO group is sequentially and circularly applied in the precoding vector group.

8 . The method of claim 1 , wherein for power control of the physical uplink channel, power for all antenna ports of the precoding matrix is equally distributed to antenna ports corresponding to non-zero elements in the precoding vector group.

9 . The method of claim 1 , wherein in each of the N TO groups, the physical uplink channel is transmitted based on different transmission configuration indication states or spatial relation information.

10 . A terminal comprising:

at least one transceiver for transmitting and receiving a wireless signal; and

at least one processor for controlling the at least one transceiver,

wherein the at least one processor configured to:

receive, from a base station, downlink control information for scheduling a physical uplink channel; and

transmit, to the base station, the physical uplink channel based on information for a transmission precoding matrix and information for a transmission rank in the downlink control information,

wherein the physical uplink channel is transmitted in a plurality of transmission occasions (TOs),

wherein the plurality of TOs are divided into N (N is an integer greater than 0) TO groups including one or more TOs,

wherein the physical uplink channel is transmitted based on a precoding vector group related to a TO group in which the physical uplink channel is transmitted,

wherein a precoding matrix determined based on the downlink control information comprises a plurality of column vectors, and

wherein the precoding vector group is determined as one or more column vectors from the plurality of column vectors.

11 . A base station comprising:

at least one transceiver for transmitting and receiving a wireless signal; and

at least one processor for controlling the at least one transceiver,

wherein the at least one processor configured to:

transmit, to a terminal, downlink control information for scheduling a physical uplink channel; and

receive, from the terminal, the physical uplink channel based on information for a transmission precoding matrix and information for a transmission rank in the downlink control information,

wherein the physical uplink channel is transmitted in a plurality of transmission occasions (TOs),

wherein the plurality of TOs are divided into N (N is an integer greater than 0) TO groups including one or more TOs,

wherein the physical uplink channel is transmitted based on a precoding vector group related to a TO group in which the physical uplink channel is transmitted,

wherein a precoding matrix determined based on the downlink control information comprises a plurality of column vectors, and

wherein the precoding vector group is determined as one or more column vectors from the plurality of column vectors.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (9)