Granted Patent B2

US 12,652,114 · App. 18/244,538 · Granted Jun 9, 2026

Inventors: Seyed Ali Akbar Fakoorian (San Diego, CA); Wei Zeng (Saratoga, CA); Dawei Zhang (Saratoga, CA); Hong He (San Jose, CA); Haitong Sun (Cupertino, CA); Chunxuan Ye (San Diego, CA); Huaning Niu (San Jose, CA)

Assignee: Apple Inc.

H04B17/336H04W72/232H04W76/20H04L5/001H04L5/0094H04L5/14

Abstract

Claims (60)

1 . A user equipment (UE), comprising:

a transceiver configured to enable wireless communication with a base station; and

a processor communicatively coupled to the transceiver and configured to:

receive, using the transceiver, a configuration message from the base station indicating a plurality of cross link interference (CLI) resources for CLI-Received Signal Strength Indicator (CLI-RSSI) measurement, wherein the configuration message comprises a Radio Resource Control (RRC) message comprising a number of the plurality of the CLI resources configured per an active bandwidth part (BWP) within a sub-band full-duplex (SBFD) symbol;

receive, using the transceiver, an activation message from the base station activating one or more of the plurality of CLI resources; and

perform a CLI measurement during at least one CLI resource of the activated one or more of the plurality of CLI resources, wherein the CLI measurement comprises the CLI-RSSI measurement.

2 . The UE of claim 1 , wherein the RRC message further comprises a CLI resource configuration for indicating the plurality of CLI resources.

3 . The UE of claim 2 , wherein the CLI resource configuration comprises:

a time domain CLI resource configuration indicating a plurality of slots and a plurality of symbols within each of the plurality of slots for the plurality of CLI resources;

a frequency domain CLI resource configuration indicating a starting physical resource block (PRB), a number of occupied PRBs for the plurality of CLI resources; and

a beam configuration indicating one or more receive beams for the plurality of CLI resources.

4 . The UE of claim 3 , wherein:

the plurality of CLI resources comprises a first CLI resource set and a second CLI resource set,

the first CLI resource set comprises first CLI resources of the plurality of CLI resources and is associated with a first CLI resource set index,

the second CLI resource set comprises second CLI resources of the plurality of CLI resources and is associated with a second CLI resource set index, and

the CLI resource configuration comprises a first CLI resource configuration part associated with the first CLI resource set and a second CLI resource configuration part associated with the second CLI resource set.

5 . The UE of claim 4 , wherein:

the first CLI resource set index is used for activating and deactivating the first CLI resources of the first CLI resource set, and

the second CLI resource set index is used for activating and deactivating the second CLI resources of the second CLI resource set.

6 . The UE of claim 4 , wherein:

the configuration message further comprises a maximum number of CLI resource sets per the active BWP within the SBFD symbol, and

the number of the plurality of the CLI resources and the maximum number of CLI resource sets are based on UE capability.

7 . The UE of claim 2 , wherein each of the plurality of CLI resources is associated with a CLI resource index and wherein each CLI resource index is used for activating and deactivating its associated CLI resource.

8 . The UE of claim 1 , wherein:

the activation message comprises a downlink (DL) Medium Access Control (MAC) Control Element (MAC-CE),

the DL MAC-CE comprises CLI resource indexes of the activated one or more of the plurality of CLI resources or CLI resource set indexes of CLI resource sets associated with the activated one or more of the plurality of CLI resources, and

the processor is further configured to:

transmit, using the transceiver, an acknowledgment message to the base station during a first slot; and

perform the CLI measurement during at least one CLI resource of the activated one or more of the plurality of CLI resources, the at least one CLI resource being during a second slot, and the second slot being a predetermined number of slots after the first slot.

9 . The UE of claim 1 , wherein the activation message comprises a UE-specific Downlink Control Information (DCI) or a group common DCI (GC-DCI).

10 . The UE of claim 9 , wherein the processor is further configured to:

receive the UE-specific DCI or the GC-DCI with a cyclic redundancy check (CRC) scrambled with a CLI Radio Network Temporary Identifier (RNTI);

validate one or more fields of the UE-specific DCI or the GC-DCI; and

determine the activated one or more of the plurality of CLI resources.

11 . The UE of claim 10 , wherein:

a Hybrid Automatic Repeat Request (HARQ) acknowledgment (HARQ-ACK) bit field of the UE-specific DCI or the GC-DCI maps to a CLI resource index or to a CLI resource set index, or

a Modulation and Coding Scheme (MCS) bit field of the UE-specific DCI or the GC-DCI maps to the CLI resource index or to the CLI resource set index, or

a bit field of the UE-specific DCI or the GC-DCI different from the HARQ-ACK bit field and the MCS bit field maps to the CLI resource index or to the CLI resource set index.

12 . The UE of claim 1 , wherein the activation message comprises one or more of a Sounding Reference Signal (SRS) request bit field or a Channel State Information (CSI) request bit field are used to determine the activated one or more of the plurality of CLI resources.

13 . The UE of claim 1 , wherein the processor is further configured to receive, using the transceiver, a deactivation message from the base station deactivating the one or more of the plurality of CLI resources.

14 . The UE of claim 13 , wherein:

the deactivation message comprises a downlink (DL) Medium Access Control (MAC) Control Element (MAC-CE), or

the deactivation message comprises a UE-specific Downlink Control Information (DCI) or a group common DCI (GC-DCI), or

the deactivation message comprises one or more of a Sounding Reference Signal (SRS) request bit field or a Channel State Information (CSI) request bit field.

15 . The UE of claim 1 , wherein the processor is further configured to deactivate the one or more of the plurality of CLI resources based on threshold for deactivation in the configuration message.

16 . The UE of claim 1 , wherein the processor is further configured to transmit, to a second UE, a signal during another CLI resource of the activated one or more of the plurality of CLI resources, wherein the second UE is configured to perform CLI measurement during the other CLI resource of the activated one or more of the plurality of CLI resources.

17 . The UE of claim 16 , wherein the configuration message comprises a parameter indicating whether the activated one or more of the plurality of CLI resources is used for CLI measurement or for transmitting the signal.

18 . The UE of claim 1 , wherein the processor is further configured to:

transmit a configuration request message to the base station for configuring a second plurality of CLI resources;

receive a second configuration message from the base station in response to the configuration request message;

transmit an activation request message to the base station for activating one or more of the second plurality of CLI resources, wherein the activation request message is based on Layer 1 signaling or is based on Layer 2 signaling; and

receive a second activation message from the base station activating a subset of the one or more of the second plurality of CLI resources.

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

receiving a configuration message from a base station indicating a plurality of cross link interference (CLI) resources for CLI-Received Signal Strength Indicator (CLI-RSSI) measurement, wherein the configuration message comprises a Radio Resource Control (RRC) message comprising a number of the plurality of the CLI resources configured per an active bandwidth part (BWP) within a sub-band full-duplex (SBFD) symbol;

receiving an activation message from the base station activating one or more of the plurality of CLI resources, wherein the activation message is based on Layer 1 signaling or Layer 2 signaling; and

performing a CLI measurement during at least one CLI resource of the activated one or more of the plurality of CLI resources, wherein the CLI measurement comprises the CLI-RSSI measurement.

20 . A non-transitory computer-readable medium storing instructions that when executed by a processor of a user equipment (UE) cause the UE to perform operations comprising:

receiving a configuration message from a base station indicating a plurality of cross link interference (CLI) resources for CLI-Received Signal Strength Indicator (CLI-RSSI) measurement, wherein the configuration message comprises a Radio Resource Control (RRC) message comprising a number of the plurality of the CLI resources configured per an active bandwidth part (BWP) within a sub-band full-duplex (SBFD) symbol;

receiving an activation message from the base station activating one or more of the plurality of CLI resources, wherein the activation message is based on Layer 1 signaling or Layer 2 signaling; and

performing a CLI measurement during at least one CLI resource of the activated one or more of the plurality of CLI resources, wherein the CLI measurement comprises the CLI-RSSI measurement.

Assignments (1)

Continuity (2)

References Cited (38)