Cross-Link Interference (CLI) Enhancement

Abstract

A method of wireless communication is presented. The method includes receiving, at a user equipment (UE), from a base station, a measurement configuration including quasi-co-location (QCL) information for a serving receive beam. The method also includes measuring cross-link interference experienced on the serving receive beam. The method also includes transmitting the QCL information for the serving receive beam and a corresponding sounding reference signal-reference signal received power (SRS-RSRP) or cross-link information-received signal strength indicator (CLI-RSSI) to the base station.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. patent application No. 17 / 229,756, filed on April 13, 2021, entitled “Cross-Link Interference (CLI) Enhancement,” which claims the benefit of U.S. Provisional Patent Application No. 63 / 011,200, filed on April 16, 2020, entitled “Cross-Link Interference (CLI) Enhancement,” the disclosures of which are incorporated herein by reference in their entirety. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications and, more particularly, to techniques and apparatus for reporting cross-link interference (CLI). Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless communication network may include multiple base stations (BSs) that can support communication for multiple user equipment (UEs). User equipment (UEs) can communicate with a base station (BS) via downlinks and uplinks. A downlink (or forward link) refers to the communication link from the BS to the UE, and an uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0006] The aforementioned multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables diverse user devices to communicate at the city, national, regional, and even global levels. New Radio (NR), also known as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR aims to improve spectral efficiency, reduce costs, improve services, utilize new spectrum, and better integrate with other open standards by using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL) and CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation to better support mobile broadband internet access. The improved interference mitigation in LTE and / or NR remains useful. Summary of the Invention

[0007] In one aspect of the present disclosure, a method for wireless communication by a first user equipment (UE) includes receiving a first reference signal measurement configuration including first quasi-co-location (QCL) information of a first serving receive beam from a base station. The method also includes measuring a first sounding reference signal (SRS) received from a second UE adjacent to the first UE on the first serving receive beam. The method also includes determining a cross-link interference (CLI) metric based at least on the measurement of the first SRS. The method also includes sending a CLI measurement report including the first QCL information and the CLI metric to the base station.

[0008] Another aspect of the present disclosure is directed to an apparatus for wireless communication by a first UE. The apparatus includes means for receiving, from a base station, a first reference signal measurement configuration including first QCL information for a first serving receive beam. The apparatus also includes means for measuring, on the first serving receive beam, a first SRS received from a second UE adjacent to the first UE. The apparatus also includes means for determining a CLI metric based at least on the measurement of the first SRS. The apparatus also includes means for sending, to the base station, a CLI measurement report including the first QCL information and the CLI metric.

[0009] In another aspect of the present disclosure, a non-transitory computer-readable medium having non-transitory program code recorded thereon for wireless communication by a first UE is disclosed. The program code is executed by a processor and includes program code for receiving a first reference signal measurement configuration including first QCL information of a first serving receive beam from a base station. The program code also includes program code for measuring a first SRS received from a second UE adjacent to the first UE on the first serving receive beam. The program code also includes program code for determining a CLI metric based at least on the measurement of the first SRS. The program code also includes program code for sending a CLI measurement report including the first QCL information and the CLI metric to the base station.

[0010] Another aspect of the present disclosure is directed to an apparatus for wireless communication at a first UE. The apparatus includes a processor, a memory coupled to the processor, and instructions stored in the memory, which, when executed by the processor, are operable to cause the apparatus to receive a first reference signal measurement configuration including first QCL information for a first serving receive beam from a base station. The instructions further cause the apparatus to measure a first SRS received from a second UE adjacent to the first UE on the first serving receive beam. The instructions further cause the apparatus to determine a CLI metric based at least on the measurement of the first SRS. The instructions further cause the apparatus to send a CLI measurement report including the first QCL information and the CLI metric to the base station.

[0011] In one aspect of the present disclosure, a method for wireless communication by a base station includes sending a first reference signal measurement configuration for a first SRS resource to a first UE, the first reference signal measurement configuration including first QCL information for a first serving receive beam. The method also includes receiving a CLI measurement report from the first UE including a CLI metric and the first QCL information. The CLI metric may be based on an SRS measurement for the first serving receive beam.

[0012] Another aspect of the present disclosure is directed to an apparatus for wireless communication by a base station. The apparatus includes means for sending a first reference signal measurement configuration for a first SRS resource to a first UE, the first reference signal measurement configuration including first quality of call (QCL) information for a first serving receive beam. The apparatus also includes means for receiving a CLI measurement report from the first UE including a CLI metric and the first QCL information. The CLI metric may be based on an SRS measurement for the first serving receive beam.

[0013] In another aspect of the present disclosure, a non-transitory computer-readable medium having non-transitory program code recorded thereon for wireless communication by a base station is disclosed. The program code is executed by a processor and includes program code for sending a first reference signal measurement configuration for a first SRS resource to a first UE, the first reference signal measurement configuration including first QCL information for a first serving receive beam. The program code also includes program code for receiving a CLI measurement report from the first UE including a CLI metric and the first QCL information. The CLI metric may be based on an SRS measurement of the first serving receive beam.

[0014] Another aspect of the present disclosure is directed to an apparatus for wireless communication at a base station. The apparatus includes a processor, a memory coupled to the processor, and instructions stored in the memory. When executed by the processor, the instructions are operable to cause the apparatus to send a first reference signal measurement configuration for a first SRS resource to a first UE, the first reference signal measurement configuration including first QCL information for a first serving receive beam. Execution of the instructions further causes the apparatus to receive a CLI measurement report from the first UE including a CLI metric and the first QCL information. The CLI metric may be based on an SRS measurement for the first serving receive beam.

[0015] Aspects generally include methods, apparatuses, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and processing systems as generally described with reference to and illustrated by the accompanying drawings and description.

[0016] The features and technical advantages of the examples according to the present disclosure have been outlined in a rather broad manner so that the detailed description that follows may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be readily used as a basis for modifying or designing other structures for achieving the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The features of the concepts disclosed herein, their organization and method of operation, and related advantages will be better understood from the following description when considered in conjunction with the accompanying drawings. Each of the figures is provided for the purpose of illustration and description and not as a definition of limitations to the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to enable a detailed understanding of the features of the present disclosure, reference may be made to certain aspects of the present disclosure, some of which are illustrated in the accompanying drawings. However, it should be noted that the accompanying drawings illustrate only certain aspects of the present disclosure and are therefore not to be considered limiting of its scope, as the description may admit to other equally effective aspects. The same reference numerals in different figures may represent the same or similar elements.

[0018] Figure 1is a block diagram conceptually illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.

[0019] Figure 2 is a block diagram conceptually illustrating an example of a base station communicating with a user equipment (UE) in a wireless communication network according to various aspects of the present disclosure.

[0020] Figure 3A and Figure 3B An example of inter-cell interference according to aspects of the present disclosure is shown.

[0021] Figure 4 An example of a timing diagram for measuring CLI according to aspects of the present disclosure is shown.

[0022] Figure 5 is a diagram illustrating example processes performed, for example, by a UE, according to various aspects of the present disclosure.

[0023] Figure 6 is a diagram illustrating example processes performed, for example, by a base station, according to various aspects of the present disclosure. DETAILED DESCRIPTION

[0024] Various aspects of the present disclosure are described below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms and should not be construed as limited to any specific structure or function presented throughout the present disclosure. On the contrary, these aspects are provided to make the present disclosure thorough and complete and to convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art should understand that the scope of the present disclosure is intended to cover any aspect of the present disclosure, whether implemented independently of any other aspect of the present disclosure or implemented in combination with any other aspect of the present disclosure. For example, any number of aspects set forth can be used to implement an apparatus or practice method. In addition, the scope of the present disclosure is intended to cover such an apparatus or method that is practiced using other structures, functions, or structures and functions in addition to the various aspects of the present disclosure set forth. It should be understood that any aspect of the disclosed disclosure can be embodied by one or more elements of the claims.

[0025] Several aspects of telecommunications systems will now be described with reference to various devices and techniques. These devices and techniques are described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively, "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0026] It should be noted that while aspects may be described using terminology generally associated with 5G and later wireless technologies, aspects of the present disclosure may be applicable to communication systems based on other generations, such as and including 3G and / or 4G technologies.

[0027] In conventional systems, for cross-link interference (CLI) measurements, a sounding reference signal (SRS) configuration may be sent to a transmitting device, such as a transmitting user equipment (UE), and may include only spatial relationship information of the transmit beam. The SRS configuration sent to a receiving device, such as a receiving UE, may not include spatial relationship information of the serving receive beam, such as quasi-co-location (QCL) information. Therefore, in such a system, the serving receive beam used to receive the SRS at the UE may vary based on the implementation of the UE. As a result, it may be difficult for a base station to measure the CLI of a specific serving receive beam. The base station may need to identify the spatial relationship information of the serving receive beam to improve the CLI measurement. Improved CLI measurement may improve interference mitigation.

[0028] Various aspects of the present disclosure are directed to including QCL information for a serving receive beam in a reference signal measurement configuration, such as an SRS measurement configuration. Various aspects of the present disclosure are also directed to a UE sending a CLI measurement report with a CLI metric based on an SRS measured for the serving receive beam and the QCL information for the serving receive beam. In some aspects, the CLI metric includes one or both of a sounding reference signal-reference signal received power (SRS-RSRP) or a cross-link information-received signal strength indicator (CLI-RSSI) for the serving receive beam on a given SRS resource.

[0029] Figure 1 is a schematic diagram illustrating a network 100 in which various aspects of the present disclosure may be practiced. The network 100 may be a 5G or NR network or some other wireless network, such as an LTE network. The wireless network 100 may include multiple BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with a user equipment (UE) and may also be referred to as a base station, NR BS, Node B, gNB, 5G Node B (NB), access point, transmit receive point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to the coverage area of ​​a BS and / or a BS subsystem serving that coverage area, depending on the context in which the term is used.

[0030] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access to UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access to UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). The BS of a macro cell may be referred to as a macro BS. The BS of a pico cell may be referred to as a pico BS. The BS of a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown, BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB," "base station," "NR BS," "gNB," "TRP," "AP," "Node B," "5G NB," and "cell" may be used interchangeably herein.

[0031] In some aspects, the cells are not necessarily stationary, and the geographic area of ​​the cells can move depending on the location of the mobile BS. In some aspects, the BSs can be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in the wireless network 100 using any suitable transport network, through various types of backhaul interfaces, such as direct physical connections, virtual networks, etc.

[0032] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and send data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown, a relay station 110d may communicate with a macro BS 110a and a UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay station may also be referred to as a relay BS, a relay base station, a relay, or the like.

[0033] The wireless network 100 may be a heterogeneous network that includes different types of BSs, such as macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0034] The network controller 130 may be coupled to a group of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly, for example, via a wireless or wired backhaul.

[0035] UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be fixed or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. A UE may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biosensor / device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0036] Some UEs may be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which may communicate with a base station, another device (e.g., a remote device), or some other entity. For example, a wireless node may provide a connection to or to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs may be considered customer premises equipment (CPE). UE 120 may be included in a housing that houses components of UE 120 (e.g., a processor component, a memory component, etc.).

[0037] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific radio access technology (RAT) and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, channel, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0038] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary for communicating with each other) using one or more sidelink channels. For example, the UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), mesh networks, etc. In such cases, the UEs 120 may perform scheduling operations, resource selection operations, and / or other operations performed by the base station 110 as described elsewhere herein.

[0039] As mentioned above, Figure 1 are provided as examples. Other examples may differ from those described in Figure 1 described.

[0040] Figure 2 A block diagram shows a design 200 of a base station 110 and a UE 120, which may be Figure 1 Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T≧1 and R≧1.

[0041] At the base station 110, a transmit processor 220 may receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for the UE based at least in part on the MCS selected for each UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI) and control information (e.g., CQI requests, grants, upper layer signaling, etc.) and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols (if applicable), and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively. According to various aspects described in greater detail below, position coding may be utilized to generate synchronization signals to convey additional information.

[0042] At UE 120, antennas 252a through 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE 120 may be included in a housing.

[0043] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reporting, including RSRP, RSSI, RSRQ, CQI, etc.) from the controller / processor 280. The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antennas 234, processed by the demodulators 254, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0044] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component(s) of may perform one or more techniques associated with machine learning for nonlinearity, as described in more detail elsewhere. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component(s) may perform or direct the Figure 6 -8 processes and / or other processes. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. Scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0045] In some aspects, UE 120 may include a device module for receiving a first reference signal measurement configuration including QCL information of a serving receive beam from a base station; a module device for measuring an SRS received from a second UE adjacent to the first UE on the serving receive beam; a device module for determining a CLI metric based at least on the measurement of the SRS; and a device module for sending a CLI measurement report including the QCL information and the CLI metric to the base station.

[0046] In some aspects, the base station 110 may include a module device for sending a reference signal measurement configuration for an SRS resource to a UE, the reference signal measurement configuration including QCL information of a serving receive beam; and a module device for receiving a CLI measurement report including a CLI metric and first QCL information from a first UE, the CLI metric being based on an SRS measurement of the first serving receive beam.

[0047] Such a device module may include a combination of Figure 2 One or more components of UE 120 or base station 110 are described.

[0048] As mentioned above, Figure 2 Provided as an example only. Other examples may differ from the Figure 2 described.

[0049] In a wireless communication system, when two or more UEs are configured to communicate in different uplink / downlink (UL / DL) time slot formats, cross link interference (CLI) may be experienced. The UL / DL time slot format may be referred to as a time division duplex (TDD) configuration or a TDD UL / DL configuration. For example, a first UE may be within the communication range of a second UE. In such an example, the second UE may be an example of an adjacent UE. In such an example, if the first UE and the second UE are configured with different TDD configurations, the uplink transmission from the second UE interferes with the downlink transmission of the first UE. For ease of explanation, the first UE may be referred to as a victim UE, and the second UE may be referred to as an attacker UE. In the current example, the interference may be caused by a collision between an uplink symbol (e.g., an interference symbol) of the attacker UE and a downlink symbol of the victim UE.

[0050] CLI can be caused by any uplink transmission from an attacker UE. In addition, CLI can include inter-cell interference and / or intra-cell interference. For example, different semi-static TDD configurations in different cells can cause inter-cell CLI. As another example, different UE-specific dynamic TDD configurations within the same cell can cause intra-cell CLI interference.

[0051] Figure 3A An example 300 of inter-cell interference according to aspects of the present disclosure is shown. Figure 3A In the example of FIG, the attacker UE 302 is associated with the first cell 304, so that the attacker UE 302 communicates with the first base station 306. Figure 3A In FIG, the victim UE 308 is associated with the second cell 310 , so that the victim UE 308 communicates with the second base station 312 .

[0052] In the current example, the aggressor UE 302 and the victim UE 308 may have different TDD configurations. That is, the aggressor UE 302 has a first TDD configuration 314, and the victim UE 308 has a second TDD configuration 316. As a result, a downlink transmission 324 received at the victim UE 308 may experience CLI based on an uplink transmission 322 from the aggressor UE 302. As described above, CLI may occur when an uplink symbol 318 of the first TDD configuration 314 collides with a downlink symbol 320 of the second TDD configuration 316.

[0053] Figure 3B An example 350 of intra-cell interference according to aspects of the present disclosure is shown. Figure 3BAs shown, the aggressor UE 352 and the victim UE 358 are within the same cell 354 , such that both the aggressor UE 352 and the victim UE 358 are in communication with the same base station 356 .

[0054] exist Figure 3B In the example of FIG. 3 , an aggressor UE 352 has a first TDD configuration 364, and a victim UE 358 has a second TDD configuration 366. CLI may occur when uplink symbols 368 of the first TDD configuration 364 collide with downlink symbols 370 of the second TDD configuration 366. That is, uplink transmissions 362 from the aggressor UE 352 may interfere with downlink transmissions 360 at the victim UE 358. The victim UE 358 may be the UE that experiences CLI.

[0055] In some wireless communication systems, such as wireless communication systems operating according to Release 16 of the 3GPP standard, a UE may measure and report CLI. For example, a UE may measure CLI by measuring an SRS received on a serving receive beam, and the UE may report a CLI metric based on the CLI measurement. For example, a CLI metric may include an SRS reference signal received power (RSRP) and / or a CLI received signal strength indicator (RSSI). In addition, such a wireless communication system may specify one or more network coordination mechanisms for exchanging TDD configurations between two or more network devices (such as UEs). Such a wireless communication system may also configure network devices such as UEs to identify coexistence conditions between different operators in adjacent channels. Finally, in such a wireless communication system, a receiving UE may measure and report interference based on a radio resource control (RRC) configuration and network information exchange (e.g., via the Xn and F1 interfaces). In some examples, an attacker UE may be unaware of the CLI caused by its uplink transmission.

[0056] As described above, CLI metrics may be determined based on CLI measurements. In most cases, a dedicated measurement gap may not be specified for CLI measurements. CLI measurements may measure one or both of the sounding reference signal - reference signal received power (SRS-RSRP) or the cross-link information - received signal strength indicator (CLI-RSSI). Other types of reference signal measurements may also be considered for CLI measurements. In one implementation, when the UE is in a connected modem (such as RRC_CONNECTED mode), SRS-RSRP and CLI-RSSI are measured in the active bandwidth part (BWP) of the UE. The active BWP refers to the working bandwidth of the UE within the working bandwidth of the cell. The UE may be configured with multiple BWPs. The UE may not transmit or receive on a deactivated BWP.

[0057] For SRS-RSRP, the UE measures the linear average of the power contribution of the SRS. The measurement can be performed on resource elements configured within the measurement frequency bandwidth. The measurement can also be performed in one or more measurement opportunities. Each measurement opportunity can be configured in a time resource (such as a time slot of a subframe).

[0058] For CLI-RSSI, the UE measures the linear average of the total received power observed in certain Orthogonal Frequency Division Multiplexing (OFDM) symbols received during one or more measurement occasions.The measurement may be performed on configured resource elements of the measurement bandwidth.

[0059] The UE may send a CLI measurement report after performing a determination of a CLI metric (such as SRS-RSRP and / or CLI-RSSI). The CLI measurement report may be sent periodically or based on a trigger. In one implementation, the trigger is an event, such as an amount of interference exceeding an interference threshold (e.g., event l1). In this example, the UE may send a CLI measurement report when the amount of interference exceeds the interference threshold. In some implementations, layer 3 (L3) filtering may be applied to the value of the CLI measurement report to reduce unnecessary handovers due to high CLI values. For CLI measurements, such as CLI-RSSI measurements, the UE may reset the L3 filtering when a BWP handover occurs.

[0060] In a conventional system, for CLI measurement, a transmitting UE may receive a reference signal measurement configuration that identifies transmitter spatial relationship information (such as SRS) for transmitting resources. Additionally, in a conventional system, a receiving UE may receive a CSI measurement reception configuration that identifies CSI resource information for receiving a channel state information (CSI) reference signal (CSI-RS). In such a system, the UE may receive and measure the CSI-RS based on the CSI resource information. In addition, for CLI measurement, the UE may not receive spatial relationship information of a serving receive beam for receiving resources (such as SRS). Therefore, for CLI measurement, a serving receive beam may be selected based on the UE's implementation.

[0061] As an example, a reference signal measurement configuration may configure the aggressor UE to transmit SRS on beam one. However, because the serving receive beam is based on the implementation of the UE, the serving receive beam may vary. In such an example, the UE may receive SRS on beam two. Furthermore, in this example, the base station may know the CLI from transmit beam nine to receive beam two based on previous measurements. The base station may need to obtain CLI metrics for different receive beams, such as beam one. Conventional systems do not provide a method for configuring a UE to determine the CLI metric for a serving receive beam specified by the base station. In one configuration, the base station configures the serving receive beam by including quasi-co-location (QCL) information of the serving receive beam in a reference signal measurement configuration, such as an SRS measurement configuration.

[0062] Various aspects of the present disclosure are directed to including QCL information of a serving receive beam in a reference signal measurement configuration. The QCL information may include the QCL source and QCL type. Various aspects of the present disclosure are also directed to improving CLI reporting.

[0063] As discussed, the CLI metric may include one or both of SRS-RSRP or CLI-RSSI. In one configuration, in addition to reporting the SRS-RSRP and / or CLI-RSSI for a given SRS resource of a serving receive beam, the victim UE also reports the QCL information of the serving receive beam. Based on the QCL information, the base station may determine the serving receive beam resource (e.g., ID) or the corresponding QCL in a transmission configuration indicator (TCI) state.

[0064] In some systems, a transmission may be over multiple TCI states. In some examples, a TCI state is associated with a beam pair, antenna panel, antenna port, antenna port group, QCL relationship, and / or transmit receive point (TRP). Thus, a multi-TCI state transmission may be associated with multiple beam pairs, multiple antenna panels, and / or multiple QCL relationships, which may be associated with one or more TRPs. The TCI state indicates the QCL assumption that the UE may use for channel estimation.

[0065] In some legacy systems, the TCI state may generally indicate an association between a downlink reference signal and a corresponding QCL type. Based on the TCI state, the UE may determine the serving receive beam for receiving the transmission. The QCL type may be associated with a set of QCL parameters. The QCL type may include: QCL-Type A (Doppler shift, Doppler spread, average delay, delay spread); QCL-Type B (Doppler shift, Doppler spread); QCL-Type C (Doppler shift, average delay); or QCL-Type D (spatial receive parameters).

[0066] In one configuration, the base station configures multiple serving receive beams. That is, QCL information is provided for each corresponding serving receive beam in the multiple serving receive beams. This allows the victim UE to measure the SRS received on each SRS resource across the multiple serving receive beams. For example, the UE can perform CLI measurements on each SRS received on receive beams 9, 10, 11, and 12. Multiple serving beams can be preconfigured for each measured SRS resource.

[0067] As described, the base station may configure the UE to perform CLI measurements on different serving receive beams. By increasing the number of serving receive beams configured for CLI measurements, the base station receives an increased number of CLI metrics received from the UE. Because the base station can select the best serving receive beam from a variety of serving receive beams, compared to selecting the best serving receive beam from a limited number of serving receive beams, the increase in the number of CLI metrics may improve the base station's decision-making process for configuring future reception at the UE. The best serving receive beam may be the serving receive beam with the lowest CLI metric (e.g., lowest CLI). In addition, one or more active serving receive beams of the UE may change due to blocking and / or other conditions. In some implementations, the UE may switch and reselect a serving receive beam based on CLI metrics obtained for multiple serving receive beams.

[0068] In one configuration, the victim UE reports multiple QCLs for each serving receive beam in a subset of multiple serving receive beams. For example, if Z serving receive beam QCLs are configured as candidates for CLI measurement, the UE may report X serving receive beam QCLs, where the value of X is less than the value of Z. The serving receive beams configured as candidates for CLI measurement may be referred to as candidate serving receive beams. The X serving receive beams may include one or both of a first serving receive beam set or a second serving receive beam set. Each serving receive beam in the first serving receive beam set is associated with one of the highest N CLI metric values ​​from the CLI metric set. Additionally, each serving receive beam in the second serving receive beam set is associated with the lowest P CLI metric values ​​from the CLI metric set, where the value of P may be equal to or different from the value of N. The second CLI metric set includes CLI metrics for each serving receive beam in the second serving receive beam set. The CLI metric set includes CLI metrics, such as SRS-RSRP and / or CLI-RSSI, for each of the Z serving receive beams.

[0069] For example, the UE may perform six different CLI measurements to determine six different CLI metrics, such as six different SRS-RSRP values. The CLI measurements may be performed on SRS received on six different serving receive beams (e.g., Z serving receive beams, where Z is equal to 6). The six different CLI metrics are an example of a CLI metric set. In this example, the victim UE may report QCL information for the serving receive beam associated with the CLI metrics having the two highest values ​​(e.g., the highest N, where N is equal to 2) in the CLI metric set and / or the CLI metrics having the two lowest values ​​(e.g., the lowest P, where P is equal to 2) in the CLI metric set.

[0070] In one configuration, thresholds may be established for the highest metric value and / or the lowest metric value. For example, to report QCL information for the serving receive beams associated with the first two highest CLI metric values, each CLI metric value must be greater than a first threshold. As another example, to report QCL information for the serving receive beams associated with the first two lowest CLI metric values, each CLI metric value must be less than a second threshold.

[0071] The two highest CLI metric values ​​indicate the two serving receive beams with the highest interference levels. The serving receive beams with the highest interference levels should be avoided to mitigate interference. The two lowest CLI metric values ​​indicate the two serving receive beams with the lowest interference levels. The serving receive beam with the lowest interference level should be given higher priority (e.g., preferred) than other serving receive beams.

[0072] Additionally or alternatively, the UE may report statistics of a set of CLI metrics obtained from CLI measurements performed on multiple serving beams. For example, the UE may report the average CLI metric value, the minimum CLI metric value, and / or the maximum CLI metric value of the CLI metric values ​​of the multiple serving beams.

[0073] Figure 4 4 shows an example of a timing diagram 400 for measuring CLI according to aspects of the present disclosure. Figure 4 As shown, at time T0, the base station 402 sends a first SRS resource configuration to the second UE 406 to configure SRS transmission of the second UE 406. The first SRS resource configuration may indicate spatial relationship information of a transmission beam.

[0074] At time T1, the first UE 404 receives a reference signal measurement configuration for each SRS resource from the base station 402, the reference signal measurement configuration including QCL information of one or more serving receive beams. The reference signal measurement configuration may be an SRS measurement configuration for an SRS resource.

[0075] At time T2, second UE 406 transmits an SRS to first UE 404 in the SRS resources corresponding to the reference signal measurement configuration. The SRS may be received at first UE 404 on one or more serving receive beams corresponding to the QCL information included in the reference signal measurement configuration. At time T3, first UE 404 performs CLI measurements on the SRS received on the one or more serving receive beams configured by base station 402. When first UE 404 is in connected mode, CLI measurements may be performed in the active bandwidth portion. First UE 404 determines a CLI metric based on the CLI measurements.

[0076] At time T4, the first UE 404 transmits a CLI measurement report including QCL information for each corresponding serving receive beam in one or more serving receive beams and a CLI metric corresponding to each CLI measurement. The QCL information may include a QCL source and a QCL type. In addition, the CLI measurement report may be a Layer 1 (L1) CLI measurement report or a Layer 3 (L3) CLI measurement report. The base station 402 may identify one or more serving receive beam identifiers based on the reported QCL information. The first UE 404 may transmit the CLI measurement report in response to a trigger or based on a configured period.

[0077] QCL information may be reported for one or both of a first service receive beam set or a second service receive beam set selected from a plurality of service receive beams. In one implementation, each service receive beam in the first service receive beam set is associated with one of the highest N CLI metric values ​​from the CLI metric set. Additionally, each service receive beam in the second service receive beam set is associated with the lowest P CLI metric values ​​from the CLI metric set, where P may be equal to or different from N. The CLI metric set may be based on CLI measurements performed on each of a plurality of service receive beams (e.g., Z service receive beams), where the first service receive beam set and the second service receive beam set are subsets of the plurality of service receive beams. Additionally or alternatively, the first UE 404 may report statistics of the CLI metric set for the service receive beams. The statistics may include an average CLI metric value, a minimum CLI metric value, and / or a maximum CLI metric value.

[0078] exist Figure 4 In the example of FIG4 , the first UE 404 may be an example of a victim UE that experiences CLI, and the second UE 406 may be an example of an aggressor UE. The CLI may be inter-cell interference or intra-cell interference.

[0079] As mentioned above, Figure 3A 、 3B and Figure 4are provided as examples. Other examples may differ from the reference Figure 3A 、 3B and Figure 4 described.

[0080] Figure 5 is a diagram illustrating an example process 500, for example, performed by a first UE, according to various aspects of the present disclosure. The example process 500 is an example of improved CLI measurement and reporting. Figure 5 In the example of , the first UE may experience CLI from the uplink transmission of the second UE. Figure 1 、 2 , 3A, 3B and 4, the first UE may be an example of UE 120, 308, 358 and 404. Figure 1 、 2 , 3A, 3B and 4, the second UE may be an example of UE 120, 302, 352 and 406. The base station may be an example of base station 110, 312, 356 and 402, as shown in FIG. Figure 1 、 2 , 3A, 3B and 4 described.

[0081] like Figure 5 As shown, at block 502, a first UE receives a first reference signal measurement configuration from a base station, the configuration including first quasi-co-location (QCL) information for a first serving receive beam. In some examples, the first reference signal measurement configuration may further include QCL information, each respective QCL information corresponding to a different respective serving receive beam in a plurality of serving receive beams. The serving receive beam may be pre-configured. In some examples, the first reference signal measurement configuration includes an SRS reference signal received power (SRS-RSRP) measurement configuration resource for the first serving receive beam.

[0082] In some implementations, the first UE may further measure multiple SRSs, each of the multiple SRSs being received on a different corresponding service receive beam from a plurality of service receive beams. In such implementations, the first UE may further determine multiple CLI metrics based on the measurements of the multiple SRSs. In such implementations, each CLI metric may correspond to a different corresponding SRS from the multiple SRSs, and the multiple CLI metrics include a first CLI metric. In some such implementations, the CLI measurement report also includes a QCL information set, wherein each QCL information in the QCL information set corresponds to a different corresponding receive beam from a service receive beam set, and the service receive beam set includes one or both of a first service receive beam set from the multiple service receive beams or a second service receive beam set from the multiple service receive beams. In such implementations, each service receive beam in the first service receive beam set may be associated with a highest metric value from the multiple CLI metrics, and each service receive beam in the second service receive beam set may be associated with a lowest metric value from the multiple CLI metrics. In other implementations, the CLI metric includes one or more of an average, a minimum, or a maximum value determined from a plurality of CLI metrics.

[0083] At box 504, the first UE measures a first SRS received from a second UE adjacent to the first UE on a first serving receive beam. In some implementations, the first SRS may be measured in an active bandwidth portion in connected mode. At box 506, the first UE determines a cross-link interference (CLI) metric based at least on the measurement of the first SRS. At box 508, the first UE sends a CLI measurement report to the base station including the first QCL information and the CLI metric. In some examples, the CLI metric includes one or both of an SRS reference signal received power (SRS-RSRP) or a CLI received signal strength indicator (CLI-RSSI). In addition, the CLI measurement report may include a layer 1 (L1) CLI measurement report or a layer 3 (L3) CLI measurement report.

[0084] Figure 6 is a diagram illustrating an example process 600, performed, for example, by a base station, in accordance with various aspects of the present disclosure. The example process 600 is an example of improved CLI measurement and reporting.

[0085] At box 602, the base station sends a first reference signal measurement configuration for a first sounding reference signal (SRS) resource to a first user equipment (UE), the first reference signal measurement configuration including first quasi-co-location (QCL) information for a first serving receive beam. The first QCL information may include a QCL source and a QCL type. In some examples, the first reference signal measurement configuration also includes QCL information, wherein each respective QCL information corresponds to a different respective serving receive beam in a plurality of serving receive beams, and the QCL information includes the first QCL information. In some examples, the serving receive beam may be pre-configured. In some other examples, the first reference signal measurement configuration includes an SRS reference signal received power (SRS-RSRP) measurement configuration resource for the first serving receive beam.

[0086] At block 604, the base station receives a cross-link interference (CLI) measurement report from the first UE including a CLI measurement metric and first QCL information, the CLI metric being based on an SRS measurement of a first serving receive beam. The CLI measurement report may also include a set of QCL information. In such an example, each QCL information in the set of QCL information corresponds to a different respective receive beam in a serving receive beam set, the serving receive beam set including one or both of a first serving receive beam set from a plurality of serving receive beams or a second serving receive beam set from a plurality of serving receive beams. In addition, each serving receive beam in the first serving receive beam set may be associated with a highest metric value in the plurality of CLI metrics, and each serving receive beam in the second serving receive beam set may be associated with a lowest metric value in the plurality of CLI metrics. In some implementations, each of the plurality of CLI metrics is based on an SRS measurement of a different respective serving receive beam in the plurality of serving receive beams. In other implementations, the CLI metric includes one or more of an average, a minimum, or a maximum value of the set of CLI metrics for the plurality of serving receive beams.

[0087] In some examples, the CLI measurement report may be received in response to a trigger. In some other examples, the CLI measurement report may be received based on a configured periodicity. The CLI metric may include one or both of SRS reference signal received power (SRS-RSRP) or CLI received signal strength indicator (CLI-RSSI). In addition, the CLI measurement report may include a layer 1 (L1) CLI measurement report or a layer 3 (L3) CLI measurement report.

[0088] In some implementations, the base station may transmit multiple reference signal measurement configurations, where each corresponding reference signal measurement configuration corresponds to a different corresponding SRS resource from the plurality of SRS resources. In such implementations, the plurality of SRS resources include a first SRS resource. Furthermore, the plurality of reference signal measurement configurations include the first reference signal measurement configuration. In some implementations, the base station may adjust downlink transmissions to the first UE based on the received CLI measurement report.

[0089] Examples of implementations are described in the following numbered clauses:

[0090] 1. A wireless communication method performed by a first user equipment (UE), comprising:

[0091] receiving, from a base station, a first reference signal measurement configuration including first quasi-co-site (QCL) information of a first serving receive beam;

[0092] measuring a first sounding reference signal (SRS) received from a second UE adjacent to the first UE on the first serving receive beam;

[0093] determining a cross-link interference (CLI) metric based at least on a measurement of the first SRS; and

[0094] Sending a CLI measurement report including the first QCL information and the CLI metric to the base station.

[0095] 2. The method of clause 1, wherein the CLI metric comprises one or both of SRS Reference Signal Received Power (SRS-RSRP) or CLI Received Signal Strength Indicator (CLI-RSSI).

[0096] 3. A method according to any of clauses 1-2, wherein the CLI measurement report comprises a Layer 1 (L1) CLI measurement report or a Layer 3 (L3) CLI measurement report.

[0097] 4. A method according to any of clauses 1 to 3, wherein the first reference signal measurement configuration further comprises a plurality of QCL information, each QCL information in the plurality of QCL information corresponding to a different respective serving receive beam in a plurality of serving receive beams, and the method further comprising:

[0098] measuring a plurality of SRSs, each SRS of the plurality of SRSs being received on a different respective serving receive beam of the plurality of serving receive beams; and

[0099] A plurality of CLI metrics are determined based on measurements of the plurality of SRSs, each CLI metric of the plurality of CLI metrics corresponding to a different respective SRS of the plurality of SRSs, and the plurality of CLI metrics include the first CLI metric.

[0100] 5. A method according to clause 4, wherein the CLI measurement report also includes a QCL information set, each QCL information in the QCL information set corresponds to a different corresponding receiving beam in the service receiving beam set, and the service receiving beam set includes one or both of a first service receiving beam set from the multiple service receiving beams or a second service receiving beam set from the multiple service receiving beams, each service receiving beam in the first service receiving beam set is associated with the highest metric value in the multiple CLI metrics, and each service receiving beam in the second service receiving beam set is associated with the lowest metric value in the multiple CLI metrics.

[0101] 6. The method of clause 4, wherein the CLI metric comprises at least one of an average, a minimum, or a maximum value determined from a plurality of CLI metrics.

[0102] 7. The method of clause 4, wherein the plurality of serving receive beams are pre-configured.

[0103] 8. The method of any of clauses 1-7, wherein the QCL information comprises a QCL source and a QCL type.

[0104] 9. The method according to any one of clauses 1-8 further includes receiving multiple reference signal measurement configurations, each of the multiple reference signal measurement configurations corresponding to a different corresponding sounding reference signal (SRS) resource in multiple SRS resources, the multiple SRS resources including the first SRS resource, and the multiple reference signal measurement configurations including the first reference signal measurement configuration.

[0105] 10. The method of any of clauses 1-9, further measuring the first SRS comprises measuring the first SRS in an active bandwidth portion in connected mode.

[0106] 11. A method according to any of clauses 1-10, wherein the first reference signal measurement configuration comprises an SRS Reference Signal Received Power (SRS-RSRP) measurement configuration resource for the first serving receive beam.

[0107] 12. A method as described in any of clauses 1-11, wherein the first UE experiences CLI of an uplink transmission from a second UE.

[0108] 13. A method according to any of clauses 1-12, further comprising sending a CLI measurement report in response to a trigger.

[0109] 14. A method according to any of clauses 1-13, further comprising sending CLI measurement reports based on a configured periodicity.

[0110] 15. A method for wireless communication by a base station, comprising:

[0111] sending a first sounding reference signal (SRS) measurement configuration for a first sounding reference signal (SRS) resource to a first user equipment (UE), the first reference signal measurement configuration including first quasi co-location (QCL) information of a first serving receive beam; and

[0112] A cross-link interference (CLI) measurement report is received from the first UE including a CLI metric and the first QCL information, the CLI metric being based on an SRS measurement of the first serving receive beam.

[0113] 16. A method according to clause 15, wherein the first reference signal measurement configuration includes multiple QCL information, each QCL information in the multiple QCL information corresponds to a different corresponding service reception beam in a plurality of service reception beams, and the multiple QCL information includes the first QCL information.

[0114] 17. A method according to clause 16, wherein the CLI measurement report also includes a QCL information set, each QCL information in the QCL information set corresponds to a different corresponding receiving beam in the service receiving beam set, and the service receiving beam set includes a first service receiving beam set from the multiple service receiving beams or one or both of a second service receiving beam set from the multiple service receiving beams, each service receiving beam in the first service receiving beam set is associated with the highest metric value in the multiple CLI metrics, and each service receiving beam in the second service receiving beam set is associated with the lowest metric value in the multiple CLI metrics.

[0115] 18. The method of clause 17, wherein each CLI metric of the plurality of CLI metrics is based on an SRS measurement of a different respective serving receive beam of the plurality of serving receive beams.

[0116] 19. The method of clause 17, wherein the CLI metric comprises at least one of an average, a minimum, or a maximum of a set of CLI metrics for the plurality of serving receive beams.

[0117] 20. The method of clause 16, wherein the plurality of serving receive beams are pre-configured.

[0118] 21. The method of any of clauses 15-20, wherein the first QCL information comprises a QCL source and a QCL type.

[0119] 22. A method as described in any of clauses 15-21, wherein the first reference signal measurement configuration comprises an SRS Reference Signal Received Power (SRS-RSRP) measurement configuration resource for the first serving receive beam.

[0120] 23. A method as described in any of clauses 15-22, wherein the first UE experiences CLI from an uplink transmission of a second UE.

[0121] 24. A method as described in any of clauses 15-23, further comprising receiving a CLI measurement report in response to a trigger.

[0122] 25. A method according to any of clauses 15-24, further comprising receiving CLI measurement reports based on a configured periodicity.

[0123] 26. A method according to any of clauses 15-25, wherein the CLI metric comprises one or both of SRS Reference Signal Received Power (SRS-RSRP) or CLI Received Signal Strength Indicator (CLI-RSSI).

[0124] 27. A method as described in any of clauses 15-26, wherein the CLI measurement report comprises a Layer 1 (L1) CLI measurement report or a Layer 3 (L3) CLI measurement report.

[0125] 28. The method according to any one of clauses 15-27 further includes sending multiple reference signal measurement configurations, each of the multiple reference signal measurement configurations corresponding to a different respective SRS resource in a plurality of SRS resources, the multiple SRS resources including the first SRS resource, and the multiple reference signal measurement configurations including the first reference signal measurement configuration.

[0126] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit these aspects to the precise form disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of these aspects.

[0127] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and / or a combination of hardware and software.

[0128] Some aspects are described herein in conjunction with thresholds. As used herein, depending on the context, satisfying a threshold may refer to a value greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc.

[0129] It will be apparent that the systems and / or methods described herein can be implemented using various forms of hardware, firmware, and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit these aspects. Thus, the operation and behavior of the systems and / or methods are described herein without reference to specific software code, with the understanding that software and hardware can be designed to implement the systems and / or methods based, at least in part, on the description herein.

[0130] Even though particular combinations of features are set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. In fact, many of these features can be combined in ways not specifically set forth in the claims and / or disclosed in the specification. Although each dependent claim listed below may be directly dependent on only one claim, the disclosure of the various aspects includes the combination of each dependent claim with every other claim in the claim set. A phrase referring to "at least one" of a series of items refers to any combination of these items, including single members. For example, "at least one of a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination of multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbb, bbc, cc, and cccc, or any other order of a, b, c).

[0131] Unless explicitly described, any element, action or instruction used in this article should not be interpreted as critical or essential. In addition, as used herein, the articles "one" and "an" are intended to include one or more items and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, unrelated items, a combination of related and unrelated items, etc.) and can be used interchangeably with "one or more". If only one item is referred to, the phrase "only one" or similar language is used. In addition, as used herein, the terms "have", "have", "contain" and / or similar terms are intended to be open terms. In addition, the phrase "based on" is intended to mean "based at least in part on", unless otherwise expressly stated.

Claims

1. A method for wireless communication performed by a first user equipment (UE), comprising: receiving, from a base station, a first reference signal measurement configuration including first quasi-co-site QCL information for a first serving receive beam; measuring, on the first serving receive beam, a first sounding reference signal (SRS) received from a second UE adjacent to the first UE; determining a cross-link interference (CLI) metric based at least on a measurement of the first SRS; as well as Sending a CLI measurement report including the first QCL information and the CLI metric to the base station, wherein the first QCL information includes a QCL source and a QCL type.

2. The method according to claim 1, wherein The CLI metric includes one or both of SRS reference signal received power SRS-RSRP or CLI received signal strength indicator CLI-RSSI.

3. The method according to claim 1, wherein The CLI measurement report includes a layer 1 L1 CLI measurement report or a layer 3 L3 CLI measurement report.

4. The method according to claim 1, wherein The first reference signal measurement configuration further includes a plurality of QCL information, each QCL information in the plurality of QCL information corresponds to a different respective service reception beam in a plurality of service reception beams, and the method further includes: measuring a plurality of SRSs, each SRS of the plurality of SRSs being received on a different respective serving receive beam of the plurality of serving receive beams; and A plurality of CLI metrics are determined based on measurements of the plurality of SRSs, each CLI metric of the plurality of CLI metrics corresponding to a different respective SRS of the plurality of SRSs.

5. The method according to claim 4, wherein The CLI measurement report also includes a QCL information set, each QCL information in the QCL information set corresponds to a different corresponding receiving beam in the service receiving beam set, and the service receiving beam set includes one or both of a first service receiving beam set from the multiple service receiving beams or a second service receiving beam set from the multiple service receiving beams, each service receiving beam in the first service receiving beam set is associated with the highest metric value in the multiple CLI metrics, and each service receiving beam in the second service receiving beam set is associated with the lowest metric value in the multiple CLI metrics.

6. The method according to claim 4, wherein: The CLI metric includes at least one of an average value, a minimum value, or a maximum value determined from the plurality of CLI metrics.

7. The method according to claim 4, wherein: The plurality of serving receive beams are pre-configured.

8. The method according to claim 1 also includes receiving multiple reference signal measurement configurations, each of the multiple reference signal measurement configurations corresponds to a different corresponding SRS resource in a plurality of sounding reference signal SRS resources, the multiple SRS resources include the first SRS resource, and the multiple reference signal measurement configurations include the first reference signal measurement configuration. 9 . The method of claim 1 , further measuring the first SRS comprises measuring the first SRS in an active bandwidth portion in a connected mode.

10. The method according to claim 1, wherein The first reference signal measurement configuration includes an SRS reference signal received power (SRS-RSRP) measurement configuration resource for the first serving receive beam.

11. The method according to claim 1, wherein The first UE experiences CLI of an uplink transmission from the second UE.

12. The method of claim 1, further comprising sending the CLI measurement report in response to a trigger.

13. The method of claim 1, further comprising sending the CLI measurement report based on a configured period.

14. An apparatus for wireless communication at a user equipment (UE), comprising: processor; a memory coupled to the processor; and instructions stored in the memory, which, when executed by the processor, are operable to cause the apparatus to: receiving, from a base station, a first reference signal measurement configuration including first quasi-co-site QCL information for a first serving receive beam; measuring, on the first serving receive beam, a first sounding reference signal (SRS) received from a second UE adjacent to the first UE; determining a cross-link interference (CLI) metric based at least on a measurement of the first SRS; as well as Sending a CLI measurement report including the first QCL information and the CLI metric to the base station, wherein the first QCL information includes a QCL source and a QCL type.

15. A method for wireless communication by a base station, comprising: Sending a first reference signal measurement configuration for a first sounding reference signal (SRS) resource to a first user equipment (UE), where the first reference signal measurement configuration includes first quasi-co-site (QCL) information of a first serving receive beam; as well as A CLI measurement report including a cross-link interference CLI metric and the first QCL information is received from the first UE, the CLI metric being based on an SRS measurement of the first serving receive beam, wherein the first QCL information includes a QCL source and a QCL type.

16. The method according to claim 15, wherein The first reference signal measurement configuration includes a plurality of QCL information, each QCL information of the plurality of QCL information corresponds to a different respective service reception beam among a plurality of service reception beams, and the plurality of QCL information includes the first QCL information.

17. The method according to claim 16, wherein: The CLI measurement report also includes a QCL information set, each QCL information in the QCL information set corresponds to a different corresponding receiving beam in the service receiving beam set, and the service receiving beam set includes one or both of a first service receiving beam set from the multiple service receiving beams or a second service receiving beam set from the multiple service receiving beams, each service receiving beam in the first service receiving beam set is associated with the highest metric value in multiple CLI metrics, and each service receiving beam in the second service receiving beam set is associated with the lowest metric value in the multiple CLI metrics.

18. The method according to claim 17, wherein Each CLI metric of the plurality of CLI metrics is based on an SRS measurement of a different corresponding serving receive beam of the plurality of serving receive beams.

19. The method according to claim 17, wherein The CLI metric includes at least one of an average value, a minimum value, or a maximum value of a set of CLI metrics of the plurality of serving receive beams.

20. The method according to claim 16, wherein The plurality of serving receive beams are pre-configured.

21. The method according to claim 15, wherein The first reference signal measurement configuration includes an SRS reference signal received power (SRS-RSRP) measurement configuration resource for the first serving receive beam.

22. The method according to claim 15, wherein The first UE experiences a CLI of an uplink transmission from a second UE.

23. The method of claim 15, further comprising receiving the CLI measurement report in response to a trigger.

24. The method of claim 15, further comprising receiving the CLI measurement report based on a configured period.

25. The method according to claim 15, wherein The CLI metric includes one or both of SRS reference signal received power SRS-RSRP or CLI received signal strength indicator CLI-RSSI.

26. The method according to claim 15, wherein The CLI measurement report includes a layer 1 L1 CLI measurement report or a layer 3 L3 CLI measurement report.

27. The method of claim 15, further comprising sending a plurality of reference signal measurement configurations, each of the plurality of reference signal measurement configurations corresponding to a different respective SRS resource in a plurality of SRS resources, the plurality of SRS resources including the first SRS resource, and the plurality of reference signal measurement configurations including the first reference signal measurement configuration.

28. An apparatus for wireless communication at a base station, comprising: processor; a memory coupled to the processor; and instructions stored in the memory, which, when executed by the processor, are operable to cause the apparatus to: Sending a first reference signal measurement configuration for a first sounding reference signal (SRS) resource to a first user equipment (UE), where the first reference signal measurement configuration includes first quasi-co-site (QCL) information of a first serving receive beam; as well as A CLI measurement report including a cross-link interference CLI metric and the first QCL information is received from the first UE, the CLI metric being based on an SRS measurement of the first serving receive beam, wherein the first QCL information includes a QCL source and a QCL type.

29. A computer-readable medium having program code stored thereon, wherein the program code is executable by one or more processors of a user equipment (UE) to cause the processors to perform the method of any one of claims 1 to 13.

30. A computer-readable medium having program code stored thereon, wherein the program code is executable by one or more processors of a base station to cause the processors to perform the method of any one of claims 15-27.

31. A computer program product comprising computer readable instructions which, when executed by a processor, cause the processor to perform the method of any one of claims 1 to 13.

32. A computer program product comprising computer readable instructions which, when executed by a processor, cause the processor to perform the method of any one of claims 15 to 27.

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