Systems and methods for activating beam state in wireless communication systems

Patent metadata

Field	Value
Publication number	US-12381606-B2
Application number	US-202318488593-A
Country	US
Kind code	B2
Filing date	Oct 17, 2023
Priority date	Jul 19, 2021
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

Systems and methods for wireless communication systems are disclosed. In one aspect, the wireless communication method includes receiving, by a wireless communication device from a network, first signaling. The first signaling activates one or more beam state codepoints, each of the one or more beam state codepoints includes one or more beam states for a direction. The direction includes downlink, uplink or both downlink and uplink. The method further includes determining, by the wireless communication device, at least one beam state according to the one or more beam state codepoints, and applying, by the wireless communication device, the at least one beam state to a target transmission based on the direction of the at least one beam state. The target transmission includes at least one of a downlink transmission or an uplink transmission.

First claim

The invention claimed is:

1. A wireless communication method, comprising:
receiving, by a wireless communication device from a network, first signaling, wherein the first signaling activates one or more beam state codepoints, each of the one or more beam state codepoints comprises one or more beam states for a direction, wherein the direction comprises downlink, uplink or both downlink and uplink;
determining, by the wireless communication device, at least one beam state according to the one or more beam state codepoints, wherein determining the at least one beam state according to the one or more beam state codepoints comprises determining the at least one beam state based on a first pointer, wherein the first pointer comprises at least one of:
a pointer for a downlink transmission or a pointer for an uplink transmission; or
a pointer for both the downlink transmission and the uplink transmission; and applying, by the wireless communication device, the at least one beam state to a target transmission based on the direction of the at least one beam state, wherein the target transmission comprises at least one of the downlink transmission or the uplink transmission.

2. The method of claim 1 , wherein the first signaling comprises a Medium Access Control (MAC) Control Element (CE).

3. The method of claim 1 , further comprising determining one of a plurality of candidate types for each of the one or more beam state codepoints, wherein the candidate type comprises at least one of downlink (DL), uplink (UL), combined DL and UL, or joint DL and UL.

4. The method of claim 1 , wherein the one or more beam state codepoints are organized in a predefined order according to the plurality of candidate types.

5. The method of claim 1 , further comprising determining a number of at least some of the one or more beam state codepoints for a type of a plurality of candidate types.

6. The method of claim 5 ,
wherein the number of the some of the one or more beam state codepoints for each type of the plurality of candidate types is indicated using an integer; or
wherein the numbers of the one or more beam state codepoints for all of the plurality of candidate types are jointly indicated using an integer; or
wherein the numbers of the one or more beam state codepoints for some of the plurality of candidate types are jointly indicated using an integer.

7. The method of claim 1 , wherein:
the first signaling comprises a presence indicator, wherein the presence indicator corresponds to a first one of the one or more beam state for a direction in a corresponding beam state codepoint, the presence indicator indicates a presence of a second beam state with the same direction in the same beam state codepoint; or
the first signaling comprises a presence indicator, wherein the presence indicator corresponds to each of the one or more beam states for a direction in a corresponding beam state codepoint, the presence indicator indicates a presence of another beam state with the same direction in the same beam state codepoint.

8. The method of claim 1 , wherein:
the at least one beam state is determined as at least one beam state corresponding to a beam state codepoint with a codepoint identifier (ID) determined by the first pointer.

9. The method of claim 1 , wherein the first pointer is determined by at least one of values as:
a predefined or configured integer;
an indicated value related to beam state in a downlink control information (DCI);
a lowest or a first codepoint ID in the one or more codepoint IDs in the first signaling;
a highest or a last codepoint ID in the one or more codepoint IDs in the first signaling;
a codepoint ID corresponds to a first or a last beam state codepoint of the one or more beam state codepoints having a combined downlink and uplink type or a joint downlink and uplink type in the first signaling;
a codepoint ID corresponds to a first or a last beam state codepoint of the one or more beam state codepoints having an uplink type, a combined downlink and uplink type, or a joint downlink and uplink type in the first signaling; or
a codepoint ID corresponds to a first or a last beam state codepoint of the one or more beam state codepoints having a downlink type, a combined downlink and uplink type, or a joint downlink and uplink type in the first signaling.

10. The method of claim 9 , wherein:
the first pointer is determined by the at least one of values when or after an applicable time of the first signaling; or
the first pointer is determined by the at least one of values starting from the first slot that is after an applicable time of the first signaling.

11. The method of claim 10 , wherein the applicable time of the first signaling is determined by at least one of a transmit time of a hybrid automatic repeat request acknowledgement (HARQ-ACK) information corresponding to the first signaling or a predefined or configured time period.

12. The method of claim 1 , further comprising:
receiving, by the wireless communication device from the network, second signaling;
updating the first pointer to a second pointer based on the second signaling, wherein the second signaling comprises a Medium Access Control (MAC) Control Element (CE).

13. The method of claim 12 , wherein the second pointer is determined by at least one of values as:
a predefined or configured integer;
a lowest or a first codepoint ID in the one or more codepoint IDs in the second signaling;
a highest or a last codepoint ID in the one or more codepoint IDs in the second signaling;
a codepoint ID corresponds to a first or a last beam state codepoint of the one or more beam state codepoints having a combined downlink and uplink type or a joint downlink and uplink type in the second signaling;
a codepoint ID corresponds to a first or a last beam state codepoint of the one or more beam state codepoints having an uplink type, a combined downlink and uplink type, or a joint downlink and uplink type in the second signaling; or
a codepoint ID corresponds to a first or a last beam state codepoint of the one or more beam state codepoints having a downlink type, a combined downlink and uplink type, or a joint downlink and uplink type in the second signaling.

14. The method of claim 12 , wherein
a first number of the one or more beam state codepoints in the first signaling and a second number of one or more beam state codepoints in the second signaling are different; or
types of each of the one or more beam state codepoints in the first signaling and types of each of the one or more beam state codepoints in the second signaling are not same.

15. A wireless communication method, comprising:
receiving, by a wireless communication device from a network, first signaling, wherein the first signaling activates one or more beam state codepoints, each of the one or more beam state codepoints comprises one or more beam states for a direction, wherein the direction comprises downlink, uplink or both downlink and uplink;
determining, by the wireless communication device, at least one beam state according to the one or more beam state codepoints;
determining a number of at least some of the one or more beam state codepoints for a type of a plurality of candidate types; and
applying, by the wireless communication device, the at least one beam state to a target transmission based on the direction of the at least one beam state, wherein the target transmission comprises at least one of a downlink transmission or an uplink transmission, wherein:
one or more numbers of one or more first beam state codepoints of the one or more beam state code

Assignees

• Zte Corp

Inventors

• Yao Ke
• Gao Bo
• Jiang Chuangxin
• Lu Zhaohua
• Zhang Shujuan

Classifications

• H04B7/043

  using best eigenmode, e.g. beam forming or beam steering · CPC title

• H04B7/0456 Primary

  Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting · CPC title

• H04B7/0639 Primary

  Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection · CPC title