Granted Patent B2

US 12,425,874 · App. 17/774,112 · Granted Sep 23, 2025

Inventor: Mingju Li (Beijing, CN)

Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.

H04W16/28H04B7/0404H04B7/0408H04B7/0691H04B7/06956H04W72/046H04W72/1263H04W72/23H04L5/0048H04L5/0094H04W80/02

Abstract

Claims (70)

1. A data transmission method, performed by a terminal, comprising:

receiving a media access control (MAC) signaling sent by a base station, wherein the MAC signaling is configured to activate beam indication information respectively corresponding to m antenna panels, the beam indication information corresponding to an antenna panel is configured to indicate a beam used when the antenna panel is adopted to transmit data, the MAC signaling comprises mapping information configured to indicate a correspondence between a beam indication codeword in downlink control information (DCI) and the activated beam indication information, where m is a positive integer;

receiving the DCI sent by the base station, wherein the DCI comprises a first beam indication codeword;

determining target beam indication information corresponding to a target antenna panel in the m antenna panels based on the first beam indication codeword and the mapping information;

determining a target beam used when the target antenna panel is adopted to transmit data based on the target beam indication information; and

using the target beam corresponding to the target antenna panel to transmit data with the base station;

wherein a number of pieces of the beam indication information activated by the MAC signaling is k, where k is a positive integer;

wherein the mapping information comprises k redefining numbers from 0 to k−1, and the k redefining numbers have a one-to-one correspondence with k pieces of beam indication information activated by the MAC signaling;

wherein,

in the mapping information, a number indication codeword corresponding to a beam indication codeword has r bits, and each number indication codeword indicates one or more of the activated k pieces of beam indication information;

wherein the number indication codeword is a codeword configured to indicate the redefining number, where r is a positive integer;

wherein,

initial numbers of the beam indication information of the m antenna panels are numbered jointly;

after the k pieces of beam indication information activated by the MAC signaling are ordered based on a first rule, the k pieces of beam indication information have the one-to-one correspondence with the k redefining numbers;

wherein the first rule indicates ordering based on the initial numbers from small to big or from big to small.

2. The method of claim 1 , wherein,

for an ith beam indication codeword in the mapping information, when a number of pieces of beam indication information corresponding to the ith beam indication codeword is a and a is greater than 1, the a pieces of beam indication information correspond to a different antenna panels, where i is a positive integer.

3. The method of claim 1 , said determining target beam indication information corresponding to a target antenna panel in the m antenna panels based on the first beam indication codeword and the mapping information comprising:

obtaining a first number indication codeword from the mapping information, wherein the first number indication codeword is a number indication codeword corresponding to the first beam indication codeword, and the mapping information comprises a correspondence between beam indication codewords and number indication codewords, the number indication codeword is a codeword configured to indicate the redefining number;

determining a first redefining number indicated by the first number indication codeword; and

determining beam indication information corresponding to the first redefining number to obtain the target antenna panel and the target beam indication information.

4. The method of claim 1 , wherein,

initial numbers of the beam indication information of the m antenna panels are numbered independently;

after the k pieces of beam indication information activated by the MAC signaling are ordered based on a second rule, the k pieces of beam indication information have the one-to-one correspondence with the k redefining numbers;

wherein the second rule indicates ordering the beam indication information of the m antenna panels based on identification information of the m antenna panels, wherein the identification information of the m antenna panels are ordered from big to small or from small to big and the beam indication information of a same antenna panel is ordered based on the initial numbers from small to big or from big to small.

5. The method of claim 1 , wherein,

the MAC signaling activates the same number of pieces of beam indication information for each antenna panel.

6. The method of claim 1 , wherein, the MAC signaling is further configured to update one or both of the activated beam indication information and the mapping information.

7. The method of claim 1 , wherein,

the MAC signaling activates different numbers of pieces of beam indication information for at least two antenna panels.

8. A data transmission method, performed by a base station, comprising:

sending a media access control (MAC) signaling to a terminal, wherein the MAC signaling is configured to activate beam indication information respectively corresponding to m antenna panels, the beam indication information corresponding to an antenna panel is configured to indicate a beam used when the antenna panel is adopted to transmit data, the MAC signaling comprises mapping information configured to indicate a correspondence between a beam indication codeword in downlink control information (DCI) and the activated beam indication information, where m is a positive integer; and

sending downlink control information (DCI) to the terminal, wherein the DCI comprises a first beam indication codeword, and the first beam indication codeword is configured to indicate target beam indication information corresponding to a target antenna panel in the m antenna panels;

wherein a number of pieces of the beam indication information activated by the MAC signaling is k, where k is a positive integer;

wherein the mapping information comprises k redefining numbers from 0 to k−1, and the k redefining numbers have a one-to-one correspondence with k pieces of beam indication information activated by the MAC signaling;

wherein,

in the mapping information, a number indication codeword corresponding to a beam indication codeword has r bits, and each number indication codeword indicates one or more of the activated k pieces of beam indication information;

wherein the number indication codeword is a codeword configured to indicate the redefining number, where r is a positive integer;

wherein,

initial numbers of the beam indication information of the m antenna panels are numbered jointly;

after the k pieces of beam indication information activated by the MAC signaling are ordered based on a first rule, the k pieces of beam indication information have the one-to-one correspondence with the k redefining numbers;

wherein the first rule indicates ordering based on the initial numbers from small to big or from big to small.

9. A data transmission apparatus, applied in a base station, comprising:

a processor;

a memory storing instructions executable by the processor;

wherein, the processor is configured to perform the data transmission method according to claim 8 .

10. A data transmission apparatus, applied in a terminal, comprising:

a processor;

a memory storing instructions executable by the processor;

wherein, the processor is configured to:

receive a media access control (MAC) signaling sent by a base station, wherein the MAC signaling is configured to activate beam indication information respectively corresponding to m antenna panels, the beam indication information corresponding to an antenna panel is configured to indicate a beam used when the antenna panel is adopted to transmit data, the MAC signaling comprises mapping information configured to indicate a correspondence between a beam indication codeword in downlink control information (DCI) and the activated beam indication information, where m is a positive integer;

receive the DCI sent by the base station, wherein the DCI comprises a first beam indication codeword;

determine target beam indication information corresponding to a target antenna panel in the m antenna panels based on the first beam indication codeword and the mapping information;

determine a target beam used when the target antenna panel is adopted to transmit data based on the target beam indication information; and

use the target beam corresponding to the target antenna panel to transmit data with the base station;

wherein a number of pieces of the beam indication information activated by the MAC signaling is k, where k is a positive integer;

wherein the mapping information comprises k redefining numbers from 0 to k−1, and the k redefining numbers have a one-to-one correspondence with k pieces of beam indication information activated by the MAC signaling;

wherein,

in the mapping information, a number indication codeword corresponding to a beam indication codeword has r bits, and each number indication codeword indicates one or more of the activated k pieces of beam indication information;

wherein the number indication codeword is a codeword configured to indicate the redefining number, where r is a positive integer;

wherein,

initial numbers of the beam indication information of the m antenna panels are numbered jointly;

after the k pieces of beam indication information activated by the MAC signaling are ordered based on a first rule, the k pieces of beam indication information have the one-to-one correspondence with the k redefining numbers;

wherein the first rule indicates ordering based on the initial numbers from small to big or from big to small.

11. The apparatus of claim 10 , wherein,

for an ith beam indication codeword in the mapping information, when a number of pieces of beam indication information corresponding to the ith beam indication codeword is a and a is greater than 1, the a pieces of beam indication information correspond to a different antenna panels, where i is a positive integer.

12. The apparatus of claim 10 , wherein,

initial numbers of the beam indication information of the m antenna panels are numbered independently;

after the k pieces of beam indication information activated by the MAC signaling are ordered based on a second rule, the k pieces of beam indication information have the one-to-one correspondence with the k redefining numbers;

wherein the second rule indicates ordering the beam indication information of the m antenna panels based on identification information of the m antenna panels, wherein the identification information of the m antenna panels are ordered from big to small or from small to big and the beam indication information of a same antenna panel is ordered based on the initial numbers from small to big or from big to small.

Assignments (1)

Continuity (1)

References Cited (9)

Cited By (1)

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