Patent Description:
Relatedly, document 3GPP R1-<NUM> describes UE-to-UE CLI measurements, and document <CIT> describes terminal device capability transmission.

Each modulator <NUM> may process a respective output symbol stream (e.g., for orthogonal frequency division multiplexing (OFDM) and/or the like) to obtain an output sample stream.

Controller/processor <NUM> of base station <NUM>, controller/processor <NUM> of UE <NUM>, and/or any other component(s) of <FIG> may perform one or more techniques associated with indicating a UU capability for cross-link interference (CLI) measurement, as described in more detail elsewhere herein. For example, controller/processor <NUM> of base station <NUM>, controller/processor <NUM> of UE <NUM>, and/or any other component(s) of <FIG> may perform or direct operations of, for example, process <NUM> of <FIG> and/or other processes as described herein. Memories <NUM> and <NUM> may store data and program codes for base station <NUM> and UE <NUM>, respectively. In some aspects, memory <NUM> and/or memory <NUM> may comprise a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, the one or more instructions, when executed by one or more processors of the base station <NUM> and/or the UE <NUM>, may perform or direct operations of, for example, process <NUM> of <FIG> and/or other processes as described herein.

In some aspects, UE <NUM> may include means for transmitting a communication that identifies one or more UE capability parameters for at least one of sounding reference signal (SRS) RSRP measurement or CLI RSSI measurement, means for receiving a CLI measurement configuration that is based at least in part on the one or more UE capability parameters, and/or the like. In some aspects, such means may include one or more components of UE <NUM> described in connection with <FIG>, such as controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, and/or the like.

An interlace structure may be used for each of the downlink and uplink for FDD in certain telecommunications systems (e.g., NR). For example, Q interlaces with indices of <NUM> through Q - <NUM> may be defined, where Q may be equal to <NUM>, <NUM>, <NUM>, <NUM>, or some other value. Each interlace may include slots that are spaced apart by Q frames. In particular, interlace q may include slots q, q + Q, q + 2Q, etc., where q ∈ <NUM>,. , Q - <NUM>}.

New Radio (NR) may refer to radios configured to operate according to a new air interface (e.g., other than Orthogonal Frequency Divisional Multiple Access (OFDMA)-based air interfaces) or fixed transport layer (e.g., other than Internet Protocol (IP)). In aspects, NR may utilize OFDM with a CP (herein referred to as cyclic prefix OFDM or CP-OFDM) and/or SC-FDM on the uplink, may utilize CP-OFDM on the downlink and include support for half-duplex operation using time division duplexing (TDD).

In a wireless network, a BS may provide wireless coverage in a cell in a time division multiplexing (TDM) configuration in which time-domain resources (e.g., symbols, slots, and/or the like) of the cell may be divided into uplink resources, downlink resources, and/or the like. In some cases, neighboring cells in the wireless network may be configured with different TDM configurations such that each of the neighboring cells is configured with a different combination of uplink resources and downlink resources.

In some cases, different TDM configurations in neighboring cells may cause CLI if the neighboring cells are configured to operate on the same (or an overlapping) frequency. Cross-link interference may refer to interference with downlink reception at a first UE in a first cell due to uplink transmission by a second UE in a second cell. Cross-link interference may occur, for example, where a downlink resource of the first cell at least partially overlaps in the time-domain with an uplink resource of the second cell and where the first UE and the second UE are located at the cell edge of the respective cells.

In some cases, the first UE may be configured to measure the cross-link interference so that results of measurement of the cross-link interference may be used to adjust the transmit power of the second UE to reduce, mitigate, and/or eliminate CLI with downlink reception of the first UE. However, some UEs may be capable of supporting different CLI measurement configurations (e.g., due to different processing, memory, and/or networking capabilities). A BS may be unaware of a UE's capability for supporting CLI measurement, in which case the BS may configure the UE with a CLI measurement configuration that the UE may not support.

Some aspects described herein provide techniques and apparatuses for indicating a UE capability for CLI measurement. In some aspects, a UE may transmit a communication that identifies one or more UE capability parameters that the UE may support for CLI measurement. The UE capability parameters may indicate, for example, whether the UE supports CLI measurement of particular types of CLI measurement resources, whether the UE supports different subcarrier spacing (SCS) for CLI measurement, the capability of the UE to perform a particular quantity of CLI measurements across serving cells of the UE, and/or other UE capability parameters for CLI measurement. In this way, a serving BS of the UE may receive the communication, may identify the UE capability parameters indicated in the communication, and may generate a CLI measurement configuration based at least in part on the UE capability parameters.

<FIG> is a diagram illustrating one or more examples <NUM> of indicating a UE capability for CLI measurement, in accordance with the claimed embodiment. As shown in <FIG>, example(s) <NUM> may include communication between a BS (e.g., BS <NUM>) and a UE (e.g., UE <NUM>). In some aspects, the BS and the UE may be included in a wireless network (e.g., wireless network <NUM> and/or another wireless network). In some aspects, the BS may be a serving BS of the UE, and may generate and transmit a CLI measurement configuration to the UE such that the UE may perform CLI measurement in the wireless network.

As shown in <FIG>, and by reference number <NUM>, the UE may transmit, to the BS, a communication that identifies one or more UE capability parameters, associated with the UE, for CLI measurement. In some aspects, the communication may include an uplink control information (UCI) communication, a medium access control (MAC) control element (MAC-CE) communication, and/or another type of uplink communication. In some aspects, the UE may transmit the communication to the BS based at least in part on communicatively connecting with the BS, based at least in part on receiving a request from the BS for the UE capability parameters, and/or the like. In some aspects, the UE capability parameters may be included in the communication by one or more bits in one or more information elements and/or one or more other types of fields in the communication.

In some aspects, the UE capability parameters may be based at least in part on the processing capability of the UE, the memory capacity of the UE, the battery capacity of the UE (e.g., remaining battery life of the UE and/or the battery capacity of the UE), the capability of the UE to operate on particular frequency bands, a subscription of the UE (e.g., a subscription associated with the wireless network), and/or the like.

In some aspects, the UE capability parameters may include a capability to support various types of signal measurements for various types of CLI measurement resources. For example, the UE capability parameters may identify a capability to perform an RSRP measurement of a CLI measurement resource, such as a sounding reference signal (SRS) and/or another type of reference signal transmitted by another UE (e.g., cliMeas-SRS-RSRP). As another example, the UE capability parameters may identify a capability to perform an RSSI measurement of a CLI measurement resource, such as a particular time-domain and/or frequency-domain resource (e.g., an OFDM symbol and/or the like) (e.g., cliMeas-CLI-RSSI). In some aspects, the capability to perform an RSRP measurement of a CLI measurement resource and the capability to perform an RSSI measurement of a CLI measurement resource may be indicated by separate bits in the communication such that the UE may indicate whether the UE is capable of performing RSRP measurements, RSSI measurements, or both RSRP measurements and RSSI measurements.

In some aspects, the UE capability parameters may include a capability to perform gapless CLI measurements (e.g., cliMeas-SRS-RSRP-GapRequired, cliMeas-CLI-RSSI-GapRequired, and/or the like). The capability to perform gapless CLI measurements may indicate whether the UE is capable of performing a CLI measurement and receiving a downlink communication (e.g., a physical downlink control channel (PDCCH) communication, a physical downlink shared channel (PDSCH) communication, and/or the like) or transmitting an uplink communication (e.g., a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH) communication, and/or the like) in back-to-back OFDM symbols. For example, a gapless CLI measurement may include receiving a downlink communication or transmitting an uplink communication in an OFDM symbol and performing a CLI measurement in the next consecutive OFDM symbol. In some aspects, the capability to perform gapless CLI measurements may be indicated by one or more bits in the communication.

In some aspects, the UE capability parameters may include a capability to perform an SRS RSRP measurement when a downlink channel (e.g., PDSCH, PDCCH, and/or the like) of the serving BS or cell is frequency division multiplexed with a CLI measurement resource (e.g., cliMeas-SRS-RSRP-FDMRequired), a capability to perform a CLI RSSI measurement when a downlink channel of the serving BS or cell is frequency division multiplexed with a CLI measurement resource (e.g., cliMeas-CLI-RSSI-FDMRequired, and/or the like), and/or the like. In some aspects, the capability to perform an SRS RSRP measurement when a downlink channel of the serving BS or cell is frequency division multiplexed with a CLI measurement resource, and the capability to perform a CLI RSSI measurement when a downlink channel of the serving BS or cell is frequency division multiplexed with a CLI measurement resource, may be indicated by the same bit (or bits) in the communication or by separate bits in the communication.

In some aspects, if the UE capability parameters indicate that the UE is capable of performing gapless CLI measurements, and the UE is not capable of performing an SRS RSRP measurement or a CLI RSSI measurement when a downlink channel of the serving BS or cell is frequency division multiplexed with a CLI measurement resource, the UE capability parameters may further indicate whether the UE is to receive the downlink channel or receive and perform the CLI measurement resource if the downlink channel of the serving BS or cell is frequency division multiplexed with the CLI measurement resource.

In some aspects, the UE capability parameters may indicate a capability to perform an SRS RSRP measurement when an SCS of a CLI measurement resource and an SCS of an active bandwidth part (BWP) associated with the UE are different SCSs (e.g., cliMeas-SRS-RSRP-DifferentSCS), may indicate a capability to perform a CLI RSSI measurement when the SCS of the CLI measurement resource and the SCS of the active BWP associated with the UE are different SCSs (e.g., cliMeas-CLI-RSSI-DifferentSCS), and/or the like. In some aspects, the capability to perform an SRS RSRP measurement when an SCS of a CLI measurement resource and an SCS of an active BWP associated with the UE are different SCSs, and the capability to perform a CLI RSSI measurement when the SCS of the CLI measurement resource and the SCS of the active BWP associated with the UE are different SCSs, may be indicated by the same bit (or bits) in the communication or by separate bits in the communication.

In some aspects, performing CLI measurement in a particular resource (e.g., time-domain resource and/or frequency-domain resource) may impact the UE's ability to perform beam management in the resource. In this case, the UE capability parameters may indicate a joint capability to perform beam management for CLI measurement reporting and other types of reporting or separate beam management capabilities for CLI measurement reporting and other types of reporting. For example, the UE capability may indicate a joint capability by indicating a capacity or quantity of resources (e.g., CLI measurement resources, channel state information (CSI) reference signals (CSI-RSs), synchronization signal blocks (SSBs), and/or the like) that the UE supports for CLI measurement reporting and other types of reporting in a same slot across all serving BSs or cells associated with the UE (e.g., maxNumberSSB-CSI-RS-ResourceOneTx). In some aspects, the other types of reporting may include CSI reporting (e.g., for reporting a CSI resource indicator (CRI) based at least in part on one or more CSI reference signals (CSI-RSs), synchronization signal block (SSB) reporting (e.g., for reporting an SSB resource indicator (SSBRI) based at least in part on one or more SSBs), and/or the like.

As another example, the UE may indicate separate capabilities by indicating a capacity or quantity of CLI measurement resources in a same slot that the UE supports for CLI measurement reporting (e.g., beamManagementSSB-CSI-RS-WithCLI-SRS) and indicating separate capacity or quantity of other resources that the UE supports in a same slot for other types of reporting across all serving BSs or cells associated with the UE (e.g., maxNumberSSB-CSI-RS-ResourceOneTx).

In some aspects, the UE capability parameters may indicate a capacity or capability to perform a quantity of SRS RSRP measurements in a same slot across all serving BSs or cells associated with the UE (e.g., cliMeas-SRS-RSRP-ResourcesOneTx) and/or a capacity or capability to perform a quantity of SRS RSRP measurements across all serving BSs or cells associated with the UE (e.g., cliMeas-SRS-RSRP-ResourcesTotal). In some aspects, the UE capability parameters may indicate a capacity or capability to perform a quantity of CLI RSSI measurements in a same slot across all serving BSs or cells associated with the UE (e.g., cliMeas-CLI-RSSI-ResourcesOneTx) and/or a capacity or capability to perform a quantity of CLI RSSI measurements across all serving BSs or cells associated with the UE (e.g., cliMeas-CLI-RSSI-ResourcesTotal).

In some aspects, the UE capability parameters may be the same or different for different frequency bands. For example, at least a subset of the UE capability parameters may be different for one or more sub-<NUM> frequency bands and one or more millimeter wave frequency bands.

As further shown in <FIG>, and by reference number <NUM>, the BS may transmit, to the UE, the CLI measurement configuration for the UE. As indicated above, the CLI measurement configuration may be based at least in part on the UE capability parameters for CLI measurement identified in the communication transmitted from the UE to the BS. The CLI measurement configuration may identify one or more time-domain and/or frequency-domain resources in which the UE is to perform one or more CLI measurements, the type(s) of CLI measurements that the UE is to perform, the type(s) of CLI measurement resources that the UE is to measure, and/or the like. In some aspects, the BS may transmit the CLI measurement configuration to the UE in a downlink control information (DCI) communication, a MAC-CE communication, a radio resource control (RRC) communication, and/or the like.

In this way, the UE may transmit a communication that identifies one or more UE capability parameters that the UE may support for CLI measurement. The UE capability parameters may indicate, for example, whether the UE supports CLI measurement of particular types of CLI measurement resources, whether the UE supports different SCS for CLI measurement, the capacity or capability of the UE to perform a particular quantity of CLI measurements across serving BSs or cells of the UE, and/or other UE capability parameters for CLI measurement. In this way, a serving BS of the UE may receive the communication, may identify the UE capability parameters indicated in the communication, and may generate a CLI measurement configuration based at least in part on the UE capability parameters.

As indicated above, <FIG> is provided as one or more examples.

<FIG> is a diagram illustrating an example process <NUM> performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process <NUM> is an example where the UE (e.g., UE <NUM>) performs operations associated with indicating a UE capability for CLI measurement.

As shown in <FIG>, in some aspects, process <NUM> may include transmitting a communication that identifies one or more UE capability parameters for at least one of SRS RSRP measurement or CLI RSSI measurement (block <NUM>). For example, the UE (e.g., using receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may transmit a communication that identifies one or more UE capability parameters for at least one of SRS RSRP measurement or CLI RSSI measurement, as described above.

As further shown in <FIG>, in some aspects, process <NUM> may include receiving a CLI measurement configuration that is based at least in part on the one or more UE capability parameters (block <NUM>). For example, the UE (e.g., using receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may receive a CLI measurement configuration that is based at least in part on the one or more UE capability parameters, as described above.

In a first aspect, the one or more UE capability parameters include at least one of a capability to perform an SRS RSRP measurement or a capability to perform a CLI RSSI measurement. In a second aspect, alone or in combination with the first aspect, the capability to perform the SRS RSRP measurement is indicated in the communication by a first bit, and the capability to perform the CLI RSSI is indicated in the communication by a second bit.

In a third aspect, alone or in combination with one or more of the first and second aspects, the one or more UE capability parameters include a capability to perform gapless CLI measurements. In a fourth aspect, alone or in combination with one or more of the first through third aspects, the one or more UE capability parameters include at least one of a capability to perform an SRS RSRP measurement when a downlink channel of a serving cell is frequency division multiplexed with a CLI measurement resource or a capability to perform a CLI RSSI measurement when the downlink channel of the serving cell is frequency division multiplexed with the CLI measurement resource.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the capability to perform the SRS RSRP measurement when the downlink channel of the serving cell is frequency division multiplexed with the CLI measurement resource is indicated in the communication by a first bit, and the capability to perform the CLI RSSI measurement when the downlink channel of the serving cell is frequency division multiplexed with the CLI measurement resource is indicated in the communication by a second bit. In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the capability to perform the SRS RSRP measurement when the downlink channel of the serving cell is frequency division multiplexed with the CLI measurement resource, and the capability to perform the CLI RSSI measurement when the downlink channel of the serving cell is frequency division multiplexed with the CLI measurement resource, are indicated in the communication by a same bit.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the one or more UE capability parameters indicate that the UE is capable of performing gapless CLI measurements, and whether the UE is to receive a downlink channel of a serving cell or a CLI measurement resource if the downlink channel of the serving cell is frequency division multiplexed with the CLI measurement resource. In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the one or more UE capability parameters include at least one of a capability to perform an SRS RSRP measurement when an SCS of a CLI measurement resource and an SCS of an active BWP associated with the UE are different SCSs, or a capability to perform a CLI RSSI measurement when the SCS of the CLI measurement resource and the SCS of the active BWP associated with the UE are different SCSs.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the capability to perform the SRS RSRP measurement when the SCS of the CLI measurement resource and the SCS of the active BWP associated with the UE are different SCSs is indicated in the communication by a first bit, and the capability to perform the CLI RSSI measurement when the SCS of the CLI measurement resource and the SCS of the active BWP associated with the UE are different SCSs is indicated in the communication by a second bit. In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, the one or more UE capability parameters include a quantity of resources that are supported for CLI measurement reporting, CSI-RS measurement reporting, and synchronization signal block measurement reporting in a same slot across all serving cells associated with the UE.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the one or more UE capability parameters include a quantity of resources that are supported for CLI measurement resources in a same slot across all serving cells associated with the UE. In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, the one or more UE capability parameters include a capacity capability to perform a quantity of sounding reference signal reference signal received power measurements in a same slot across all serving cells associated with the UE.

In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, the one or more UE capability parameters include a capacity capability to perform a quantity of sounding reference signal reference signal received power measurements across all serving cells associated with the UE. In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, the one or more UE capability parameters include a capacity capability to perform a quantity of CLI received signal strength indication measurements in a same slot across all serving cells associated with the UE.

In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, the one or more UE capability parameters include a capacity capability to perform a quantity of CLI received signal strength indication measurements across all serving cells associated with the UE. In a sixteenth aspect, alone or in combination with one or more of the first through fifteenth aspects, the one or more UE capability parameters are associated with one or more sub-<NUM> frequency bands; one or more other UE capability parameters are associated with one or more millimeter wave frequency bands, and at least a subset of the one or more UE capability parameters, and at least a subset of the one or more other UE capability parameters are, different UE capability parameters.

Claim 1:
A method of wireless communication performed by a user equipment, UE (<NUM>), comprising:
transmitting (<NUM>, <NUM>), to a base station, BS (<NUM>), a communication that identifies a plurality of UE capabilities including a first UE capability, to perform a sounding reference signal, SRS, reference signal received power, RSRP measurement when a downlink channel of a serving cell is frequency division multiplexed with a cross-link interference, CLI, measurement resource, and a second UE capability to perform a cross-link interference, CLI, received signal strength indication, RSSI, measurement when a downlink channel of a serving cell is frequency division multiplexed with a CLI measurement resource; and
receiving (<NUM>, <NUM>), from the BS (<NUM>), a CLI measurement configuration that is based at least in part on the plurality of UE capabilities.