IP Library › Granted Patent US 12684543
Granted Patent B2
US 12684543 · App. 18/569,763 · Granted Jul 14, 2026

Method and apparatus for determining slot formats of uplink and downlink transmission

Inventors: Yuantao Zhang (Beijing, CN); Hongmei Liu (Beijing, CN); Zhi Yan (Beijing, CN); Yingying Li (Beijing, CN); Haiming Wang (Beijing, CN)
Assignee: Lenovo (Beijing) Limited
H04W72/0446H04L5/14
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Quick Facts
Patent No.
US 12684543
App. No.
18/569,763
Granted
Jul 14, 2026
Kind
B2
Abstract

The present application relates to a method and an apparatus for determining slot formats of UL/DL transmission. The method includes: receiving a first UL/DL configuration and a second UL/DL configuration: and determining slot formats for a set of non-flexible slots and non-flexible symbols by at least one of the first UL/DL configuration and the second UL/DL configuration.

Claims (53)

1 . A method performed by a user equipment (UE), the method comprising:

receiving a first uplink and downlink (UL/DL) configuration and a second UL/DL configuration;

determining slot formats for a set of non-flexible slots and non-flexible symbols based on at least one of the first UL/DL configuration and the second UL/DL configuration;

determining that a slot or a symbol is configured as one of downlink, uplink, or flexible in the first UL/DL configuration and is configured differently from another one of downlink, uplink, or flexible in the second UL/DL configuration; and

determining that the slot or the symbol is utilized for full-duplex communication based on the slot or the symbol being configured differently in the first UL/DL configuration and the second UL/DL configuration.

2 . A user equipment (UE) for wireless communication, comprising:

at least one memory; and

at least one processor coupled with the at least one memory and configured to cause the UE to:

receive a first uplink and downlink (UL/DL) configuration and a second UL/DL configuration;

determine slot formats for a set of non-flexible slots and non-flexible symbols based on at least one of the first UL/DL configuration and the second UL/DL configuration;

determine that a slot or a symbol is configured as one of downlink, uplink, or flexible in the first UL/DL configuration and is configured differently from another one of downlink, uplink, or flexible in the second UL/DL configuration; and

determine that the slot or the symbol is utilized for full-duplex communication based on the slot or the symbol being configured differently in the first UL/DL configuration and the second UL/DL configuration.

3 . The UE of claim 2 , wherein the first UL/DL configuration includes a cell common UL/DL configuration and the second UL/DL configuration includes a UE specific UL/DL configuration.

4 . The UE of claim 3 , wherein the at least one processor is configured to cause the UE to:

receive at least one configuration;

wherein, to determine the slot formats based on the at least one of the first UL/DL configuration and the second UL/DL configuration, the at least one processor is configured to cause the UE to; determine the slot formats based on according to the at least one configuration.

5 . The UE of claim 4 , wherein to determine the slot formats based on the first UL/DL configuration and the second UL/DL configuration according to the at least one configuration is to:

determine the slot formats based on the first UL/DL configuration; and

change the slot formats for the set of non-flexible slots and non-flexible symbols based on the second UL/DL configuration according to the at least one configuration.

6 . The UE of claim 3 , wherein the at least one processor is configured to cause the UE to:

receive at least one configuration;

wherein, to determine the slot formats based on the at least one of the first UL/DL configuration and the second UL/DL configuration, the at least one processor is configured to cause the UE to; determine the slot formats based on the first UL/DL configuration according to the at least one configuration.

7 . The UE of claim 3 , wherein the at least one processor is configured to cause the UE to:

receive at least one configuration;

wherein, to determine the slot formats based on the at least one of the first UL/DL configuration and the second UL/DL configuration, the at least one processor is configured to cause the UE to; determine the slot formats based on the first UL/DL configuration when a function associated with the at least one configuration is not enabled.

8 . The UE of claim 2 , wherein the first UL/DL configuration includes a cell common UL/DL configuration and the second UL/DL configuration includes another cell common UL/DL configuration.

9 . The UE of claim 8 , wherein the first UL/DL configuration and the second UL/DL configuration have a same format, and wherein, to determine the slot formats based on the at least one of the first UL/DL configuration and the second UL/DL configuration, the at least one processor is configured to cause the UE to; determine the slot formats based on the second UL/DL configuration when a function associated with the second UL/DL configuration is enabled.

10 . The UE of claim 9 , wherein at least one field of the second UL/DL configuration is different from a corresponding field of the first UL/DL configuration.

11 . The UE of claim 8 , wherein, to determine the slot formats based on the at least one of the first UL/DL configuration and the second UL/DL configuration, the at least one processor is further configured to cause the UE to:

determine the slot formats by the first UL/DL configuration; and

change the slot formats for the set of non-flexible slots and non-flexible symbols by the second UL/DL configuration when a function associated with the second UL/DL configuration is enabled.

12 . The UE of claim 8 , wherein, to determine the slot formats based on the at least one of the first UL/DL configuration and the second UL/DL configuration, the at least one processor is further configured to cause the UE to:

determine the slot formats based on the first UL/DL configuration when a function associated with the second UL/DL configuration is not enabled.

13 . The UE of claim 2 , wherein the at least one processor is configured to cause the UE to:

determine that whether a set of slots and symbols is configured as one of downlink, uplink, or flexible is changed according to the first UL/DL configuration and the second UL/DL configuration; and

determine that the set of slots and symbols is utilized for full duplex communication.

14 . The UE of claim 13 , wherein, to determine that the set of slots and symbols is utilized for the full duplex communication, the at least one processor is further configured to cause the UE to:

determine that at least one element of the set of slots and symbols is utilized for the full duplex communication according to a bitmap configuration.

15 . The UE of claim 2 , wherein the at least one processor is configured to cause the UE to apply the slot formats during an initial network access.

16 . A processor for wireless communication, comprising:

at least one controller coupled with at least one memory and configured to cause the processor to:

receive a first uplink and downlink (UL/DL) configuration and a second UL/DL configuration;

determine slot formats for a set of non-flexible slots and non-flexible symbols based on at least one of the first UL/DL configuration and the second UL/DL configuration;

determine that a slot or a symbol is configured as one of downlink, uplink, or flexible in the first UL/DL configuration and is configured differently from another one of downlink, uplink, or flexible in the second UL/DL configuration; and

determine that the slot or the symbol is utilized for full-duplex communication based on the slot or the symbol being configured differently in the first UL/DL configuration and the second UL/DL configuration.

17 . The processor of claim 16 , wherein the first UL/DL configuration includes a cell common UL/DL configuration and the second UL/DL configuration includes a UL/DL configuration specific to a user equipment (UE) that includes the processor.

18 . The processor of claim 17 , wherein the at least one controller is configured to cause the processor to:

receive at least one configuration;

wherein, to determine the slot formats based on the at least one of the first UL/DL configuration and the second UL/DL configuration, the at least one controller is configured to cause the processor to; determine the slot formats based on the first UL/DL configuration according to the at least one configuration.

19 . The processor of claim 17 , wherein the at least one controller is configured to cause the processor to:

receive at least one configuration;

wherein to determine the slot formats based on the at least one of the first UL/DL configuration and the second UL/DL configuration, the at least one controller is configured to cause the processor to; determine the slot formats based on the first UL/DL configuration when a function associated with the at least one configuration is not enabled.

20 . The processor of claim 16 , wherein the first UL/DL configuration includes a cell common UL/DL configuration and the second UL/DL configuration includes another cell common UL/DL configuration.