UE-Assisted TCI State Signaling for Interference Coordination

Abstract

In a particular implementation, a method of wireless communication includes: at a user equipment (UE) associated with a first base station, detecting one or more interference beams generated by a second base station. The second base station is an adjacent base station of the first base station. The method further includes: sending, from the UE to the first base station, an interference identification message indicating the one or more interference beams. The method further includes: receiving, from the first base station, a scheduling message that indicates a set of beams of the second base station scheduled for an upcoming transmission.

Description

[0001] Cross - Reference to Related Applications

[0002] This application claims the benefit of U.S. Patent Application No. 17 / 037,118, filed on September 29, 2020, entitled "UE ASSISTED TCI STATE SIGNALING FOR INTERFERENCE COORDINATION" and U.S. Provisional Patent Application No. 62 / 908,410, filed on September 30, 2019, entitled "UE ASSISTED TCI STATE SIGNALING FOR INTERFERENCE COORDINATION", the entire contents of which are hereby incorporated by reference in their entirety. Technical Field

[0003] Broadly speaking, aspects of the present disclosure relate to wireless communication systems, and more particularly, aspects of the present disclosure relate to user equipment (UE) - assisted transmission configuration indication (TCI) state signaling for interference coordination. Background Art

[0004] Wireless communication networks have been widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcasting, and so on. These wireless networks can be multi - access networks capable of supporting multiple users by sharing available network resources. These networks, which are typically multi - access networks, support communication for multiple users by sharing available network resources.

[0005] A wireless communication network can include multiple base stations or Node Bs that can support communication for multiple user equipment (UEs). The UEs can communicate with the base stations via the downlink and the uplink. The downlink (or forward link) refers to the communication link from the base station to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the base station.

[0006] The base station can send data and control information to the UE on the downlink and / or receive data and control information from the UE on the uplink. On the downlink, transmissions from the base station may encounter interference caused by transmissions from neighboring base stations or transmissions from other radio frequency (RF) transmitters. On the uplink, transmissions from the UE may encounter interference from other UEs communicating with neighboring base stations or uplink transmissions from other wireless RF transmitters. Such interference can degrade the performance on both the downlink and the uplink.

[0007] As the demand for mobile broadband access continues to increase, the more UEs accessing a long-distance wireless communication network and the more short-distance wireless systems deployed in a community, the more likely it is for the network to experience interference and congestion. Continuing research and development of wireless technologies can not only meet the growing demand for mobile broadband access but also enhance and improve the user experience of mobile communication. SUMMARY OF THE INVENTION

[0008] To provide a basic understanding of the technologies discussed, some aspects of the present disclosure are summarized below. This summary section is not an exhaustive overview of all the expected features of the present disclosure, nor is it intended to identify the key or important elements of all aspects of the present disclosure or to describe the scope of any or all aspects of the present disclosure. Its sole purpose is to present some concepts of one or more aspects of the present disclosure in a generalized form as a prelude to the detailed description that follows.

[0009] In one aspect of the present disclosure, a method of wireless communication includes: at a user equipment (UE) associated with a first base station, detecting one or more interference beams generated by a second base station. The second base station is an adjacent base station of the first base station. The method further includes: sending, from the UE to the first base station, an interference identification message indicating the one or more interference beams. The method further includes: receiving, from the first base station, a scheduling message that indicates a set of beams of the second base station that are scheduled for an upcoming transmission.

[0010] In another aspect of the present disclosure, a device configured for wireless communication is disclosed. The device includes at least one processor and a memory coupled to the at least one processor. The at least one processor is configured to: at a user equipment (UE) associated with a first base station, detect one or more interference beams generated by a second base station. The second base station is an adjacent base station of the first base station. The at least one processor is further configured to initiate, from the UE to the first base station, a transmission of an interference identification message for indicating the one or more interference beams. The at least one processor is further configured to: receive, from the first base station, a scheduling message that indicates a set of beams of the second base station that are scheduled for an upcoming transmission.

[0011] In another aspect of the present disclosure, a device configured for wireless communication is disclosed. The device includes: a unit for detecting, at a user equipment (UE) associated with a first base station, one or more interference beams generated by a second base station. The second base station is an adjacent base station of the first base station. The device further includes: a unit for sending, from the UE to the first base station, an interference identification message indicating the one or more interference beams. The device further includes: a unit for receiving, from the first base station, a scheduling message, the scheduling message indicating a set of beams of the second base station scheduled for an upcoming transmission.

[0012] In another aspect of the present disclosure, a non-transitory computer-readable medium stores instructions that, when executed by a processor, cause the processor to perform operations including: detecting, at a user equipment (UE) associated with a first base station, one or more interference beams generated by a second base station. The second base station is an adjacent base station of the first base station. The operations further include: initiating, from the UE to the first base station, a transmission of an interference identification message for indicating the one or more interference beams. The operations further include: receiving, from the first base station, a scheduling message, the scheduling message indicating a set of beams of the second base station scheduled for an upcoming transmission.

[0013] In another aspect of the present disclosure, a method of wireless communication includes: receiving, at a first base station from a user equipment (UE), an interference identification message for indicating one or more interference beams detected by the UE. The one or more interference beams are generated by a second base station, and the second base station is an adjacent base station of the first base station. The method further includes: sending, via backhaul communication, the interference identification message from the first base station to the second base station.

[0014] In another aspect of the present disclosure, a device configured for wireless communication is disclosed. The device includes at least one processor and a memory coupled to the at least one processor. The at least one processor is configured to: receive, at a first base station from a user equipment (UE), an interference identification message for indicating one or more interference beams detected by the UE. The one or more interference beams are generated by a second base station, and the second base station is an adjacent base station of the first base station. The at least one processor is further configured to: initiate, via backhaul communication, a transmission of the interference identification message from the first base station to the second base station.

[0015] In another aspect of the present disclosure, a device configured for wireless communication is disclosed. The device includes: a unit for receiving, at a first base station, an interference identification message from a user equipment (UE) for indicating one or more interference beams detected by the UE. The one or more interference beams are generated by a second base station, and the second base station is an adjacent base station of the first base station. The device further includes: a unit for transmitting the interference identification message from the first base station to the second base station via backhaul communication.

[0016] In another aspect of the present disclosure, a non-transitory computer-readable medium stores instructions that, when executed by a processor, cause the processor to perform operations including: receiving, at a first base station, an interference identification message from a user equipment (UE) for indicating one or more interference beams detected by the UE. The one or more interference beams are generated by a second base station, and the second base station is an adjacent base station of the first base station. The operations further include: initiating, via backhaul communication, transmission of the interference identification message from the first base station to the second base station.

[0017] In another aspect of the present disclosure, a method for wireless communication includes: receiving, at a second base station via backhaul communication, an interference identification message from a first base station indicating one or more interference beams detected by a user equipment (UE). The one or more interference beams are generated by the second base station, and the second base station is an adjacent base station of the first base station. The method further includes: generating, at the second base station, a scheduling message indicating a set of beams of the second base station scheduled for an upcoming transmission. The method further includes: transmitting the scheduling message from the second base station to the first base station via a second backhaul communication.

[0018] In another aspect of the present disclosure, a device configured for wireless communication is disclosed. The device includes at least one processor and a memory coupled to the at least one processor. The at least one processor is configured to: receive, at a second base station via backhaul communication, an interference identification message from a first base station indicating one or more interference beams detected by a user equipment (UE). The one or more interference beams are generated by the second base station, and the second base station is an adjacent base station of the first base station. The at least one processor is further configured to: generate, at the second base station, a scheduling message indicating a set of beams of the second base station scheduled for an upcoming transmission. The at least one processor is further configured to: initiate, via a second backhaul communication, transmission of the scheduling message from the second base station to the first base station.

[0019] In another aspect of the present disclosure, a device configured for wireless communication is disclosed. The device includes: a unit for receiving, at a second base station via backhaul communication, an interference identification message from a first base station indicating one or more interference beams detected by a user equipment (UE). The one or more interference beams are generated by the second base station. The second base station is an adjacent base station of the first base station. The device further includes: a unit for generating, at the second base station, a scheduling message indicating a set of beams of the second base station scheduled for an upcoming transmission. The device further includes: a unit for transmitting the scheduling message from the second base station to the first base station via a second backhaul communication.

[0020] In another aspect of the present disclosure, a non-transitory computer-readable medium stores instructions that, when executed by a processor, cause the processor to perform operations including: receiving, at a second base station via backhaul communication, an interference identification message from a first base station indicating one or more interference beams detected by a user equipment (UE). The one or more interference beams are generated by the second base station. The second base station is an adjacent base station of the first base station. The operations further include: generating, at the second base station, a scheduling message indicating a set of beams of the second base station scheduled for an upcoming transmission. The operations further include: initiating, via a second backhaul communication, transmission of the scheduling message from the second base station to the first base station.

[0021] After understanding the following description of specific, exemplary aspects of the present disclosure in conjunction with the drawings, other aspects, features, and implementations of the present disclosure will become apparent to those of ordinary skill in the art. Although certain aspects and the drawings are discussed below with respect to certain features of the present disclosure, various aspects of the present disclosure may include one or more of the advantageous features discussed herein. In other words, although one or more aspects are discussed as having certain advantageous features, one or more of these features may also be used in accordance with the various aspects discussed herein. In a similar manner, although the exemplary aspects are discussed below as device, system, or method implementations, these exemplary aspects may be implemented in a variety of devices, systems, and methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] A further understanding of the nature and advantages of the present disclosure can be obtained by referring to the following drawings. In the drawings, like components or features have the same reference numerals. In addition, each of the same type of components can be distinguished by adding a dashed line after the reference numeral and a second label for distinguishing similar components. If only the first reference numeral is used in the specification, the description can apply to any one of the similar components having the same first reference numeral, regardless of the second reference numeral.

[0023] Figure 1 is a block diagram showing details of a wireless communication system according to some aspects of the present disclosure.

[0024] Figure 2 is a block diagram conceptually showing a design of a base station and a UE configured according to some aspects of the present disclosure.

[0025] Figure 3 is a block diagram of a system configured to provide interference identification messages from a UE to an adjacent base station.

[0026] Figure 4 is a schematic diagram of a system configured to perform beamforming on data and provide interference identification messages from a UE to an adjacent base station.

[0027] Figure 5 is a block diagram of example blocks executed by a UE configured according to one aspect of the present disclosure.

[0028] Figure 6 is a block diagram of example blocks executed by a base station configured according to one aspect of the present disclosure.

[0029] Figure 7 is a block diagram of example blocks executed by a base station configured according to one aspect of the present disclosure.

[0030] Figure 8 is a block diagram conceptually showing a design of a UE configured to send interference identification messages according to some aspects of the present disclosure.

[0031] Figure 9 is a block diagram conceptually showing a design of a base station configured to receive interference identification messages from a UE and send interference identification messages to an adjacent base station according to some aspects of the present disclosure.

[0032] Figure 10 is a block diagram conceptually showing a design of a base station configured to receive interference identification messages from an adjacent base station and send scheduling messages to an adjacent base station according to some aspects of the present disclosure.

[0033] Detailed implementation

[0034] The following detailed implementations described in conjunction with the accompanying drawings are only intended to describe various configurations and are not intended to limit the scope of the present disclosure. On the contrary, to provide a thorough understanding of the present invention, the detailed implementations include specific details. It will be apparent to those of ordinary skill in the art that these specific details are not required in every case, and in some instances, well-known structures and components are shown in block diagram form for clarity of presentation.

[0035] The electromagnetic spectrum is typically subdivided into various categories, bands, or channels based on frequency (or wavelength). In the fifth generation (5G) new radio (NR), two initial operating bands are defined as the frequency range names FR1 (410 MHz - 7.125 GHz) and FR2 (24.25 GHz - 52.6 GHz). The frequencies between FR1 and FR2 are commonly referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, in various documents and articles, FR1 is often (interchangeably) referred to as the "sub-6 GHz" band. A similar naming issue sometimes occurs with FR2, which is often (interchangeably) referred to as the "millimeter wave" band / spectrum in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz - 300 GHz) that the International Telecommunication Union (ITU) defines as the "millimeter wave" band. Considering the above aspects, unless otherwise explicitly stated, it should be understood that the term "sub-6 GHz" etc. (if used herein) can broadly represent frequencies that can be less than 6 GHz, which can be within FR1 or can include mid-band frequencies. Additionally, unless otherwise explicitly stated, it should be understood that the term "millimeter wave" etc. (if used herein) can broadly represent frequencies that include mid-band frequencies, can be within FR2, or can be within the EHF band.

[0036] The present disclosure generally relates to providing or participating in communication between two or more wireless devices in one or more wireless communication systems (which are also referred to as wireless communication networks). In various aspects, the techniques and apparatuses can be used in wireless communication networks such as: code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, single carrier FDMA (SC-FDMA) networks, LTE networks, GSM networks, fifth generation (5G) or new radio (NR) networks (sometimes referred to as "5G NR" networks / systems / devices), and other communication networks. As described herein, the terms "network" and "system" can be used interchangeably.

[0037] For example, a CDMA network can implement radio technologies such as Universal Terrestrial Radio Access (UTRA), cdma 2000, and so on. UTRA includes Wideband CDMA (W-CDMA) and Low Chip Rate (LCR). CDMA 2000 covers the IS-2000, IS-95, and IS-856 standards.

[0038] A TDMA network can implement radio technologies such as GSM, for example. 3GPP defines the standards for the GSM EDGE (Enhanced Data Rates for GSM Evolution) Radio Access Network (RAN), which is also known as GERAN. GERAN is the radio component of GSM / EDGE and the network that connects base stations (e.g., Ater and Abis interfaces) and base station controllers (A interface, etc.). The radio access network represents a component of the GSM network through which telephone calls and packet data are routed between the Public Switched Telephone Network (PSTN) and the Internet and the user's handheld device (also known as the user terminal or user equipment (UE)). The network of a mobile phone operator can include one or more GERANs, which can be coupled to the Universal Terrestrial Radio Access Network (UTRAN) in the case of a UMTS / GSM network. The operator network can also include one or more LTE networks and / or one or more other networks. Various different network types can use different Radio Access Technologies (RATs) and Radio Access Networks (RANs).

[0039] OFDMA networks can implement radio technologies such as evolved UTRA (E-UTRA), IEEE 802.11, IEEE 802.16, IEEE 802.20, Flash-OFDM, and so on. UTRA, E-UTRA, and Global System for Mobile Communications (GSM) are part of the Universal Mobile Telecommunications System (UMTS). Specifically, Long-Term Evolution (LTE) is the E-UTRA-adopted version of UMTS. UTRA, E-UTRA, GSM, UMTS, and LTE are described in documents provided by an organization called the "3rd Generation Partnership Project" (3GPP), and cdma2000 is described in documents from an organization called the "3rd Generation Partnership Project 2" (3GPP2). These various radio technologies and standards are known or are about to be developed. For example, the 3rd Generation Partnership Project (3GPP) is a collaboration among telecommunication union groups aimed at specifying globally applicable third-generation (3G) mobile phone specifications. 3GPP Long-Term Evolution (LTE) is a 3GPP plan aimed at improving the Universal Mobile Telecommunications System (UMTS) mobile phone standard. 3GPP can specify the specifications for next-generation mobile networks, mobile systems, and mobile devices. This disclosure focuses on the development of wireless technologies from LTE, 4G, 5G, NR, and the shared access to the wireless spectrum among networks using a collection of new and different radio access technologies or radio air interfaces.

[0040] 5G networks consider various deployments, various spectrums, and various services and devices that can be implemented using an OFDM-based unified air interface. To achieve these goals, in addition to developing new radio technologies for 5G NR networks, further enhancements to LTE and LTE-A are also considered. 5G NR will be able to expand to provide the following coverage: (1) Coverage for a massive Internet of Things (IoT) with ultra-high density (e.g., ~1M nodes / km 2 ), ultra-low complexity (e.g., ~10s of bits / second), ultra-low energy (e.g., battery life of about 10 years or more), and deep coverage with the ability to reach challenging locations; (2) Including mission-critical control with strong security to protect sensitive personal, financial, or confidential information, ultra-high reliability (e.g., ~99.9999% reliability), ultra-low latency (e.g., ~1ms), and providing a wide range of mobility or its lack thereof to users; and (3) Having enhanced mobile broadband, which includes extremely high capacity (e.g., ~10 Tbps / km 2 ), extreme data rates (e.g., multi-Gbps rates, user experience rates above 100 Mbps), and having improved discovery and optimized depth perception.

[0041] 5G NR devices, networks, and systems can be implemented to use an optimized OFDM-based waveform. These features can include scalable digital schemes and transmission time intervals (TTIs); a common, flexible framework for efficient multiplexing of services and features with dynamic, low-latency time-division duplex (TDD) / frequency-division duplex (FDD) design options; and improved radio technologies such as massive multiple-input, multiple-output (MIMO), robust millimeter-wave (mmWave) transmission, advanced channel decoding, and device-centric mobility. The scalability of the digital schemes in 5G NR, along with the scaling of subcarrier spacing, can efficiently address the operation of diverse services across different spectrums and different deployments. For example, in various outdoor and macro coverage deployments with less than 3 GHz FDD / TDD implementations, such as on 1, 5, 10, 20 MHz, and similar bandwidths, the subcarrier spacing can be 15 kHz. For various other outdoor and small cell coverage deployments with TDD greater than 3 GHz, the subcarrier spacing can be 30 kHz on 80 / 100 MHz bandwidths. For various other indoor broadband implementations using TDD in the unlicensed portion of the 5 GHz band, the subcarrier spacing can be 60 kHz on 160 MHz bandwidths. Finally, for various deployments transmitting with mmWave components using TDD at 28 GHz, the subcarrier spacing can be 120 kHz on 500 MHz bandwidths.

[0042] The scalable digital scheme of 5G NR enables scalable TTIs for various latency and quality of service (QoS) requirements. For example, shorter TTIs can be used for low latency and high reliability, while longer TTIs can be used for higher spectral efficiency. The efficient multiplexing of long and short TTIs allows transmissions to start at symbol boundaries. 5G NR also considers a subframe design option with self-contained integration of uplink / downlink scheduling information, data, and acknowledgments in the same subframe. The self-contained integrated subframe supports communication in unlicensed or contention-based shared spectrum, adaptive uplink / downlink, where it can be flexibly configured on a per-cell basis to dynamically switch between uplink and downlink to meet current traffic demands.

[0043] For clarity of explanation, certain aspects of these devices and technologies are described below with reference to exemplary LTE implementations or LTE-centric approaches, and LTE terminology may be used as illustrative examples in the following description; however, the description is not intended to be limited to LTE applications. In fact, the present disclosure relates to shared access to the radio spectrum between networks using different radio access technologies or radio air interfaces, such as those of 5G NR.

[0044] In addition, it should be understood that in operation, a wireless communication network adapted according to the concepts herein can operate in any combination of licensed spectrum or unlicensed spectrum depending on load and availability. Thus, it will be apparent to those skilled in the art that the systems, apparatuses, and methods described herein can be applied to other communication systems and applications in addition to the specific examples provided.

[0045] While aspects and implementations are described in this application by way of illustration of some examples, those skilled in the art will understand that additional implementations and use cases can be implemented in many different arrangements and scenarios. The innovations described herein can be implemented across multiple different platform types, devices, systems, shapes, sizes, packaging arrangements. For example, aspects and / or uses can be implemented via integrated chip implementations and / or other non-module-component-based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial devices, retail / purchase devices, medical devices, AI-enabled devices, etc.) or combinations thereof. Although some examples may be specific to a use case or application, or may not be specific to a use case or application, nevertheless, various applicability of the described innovations may arise. The scope of implementation can range from chip-level or modular components to non-modular, non-chip-level implementations, and can also be aggregated, distributed, or OEM devices or systems that incorporate one or more of the described aspects. In some practical settings, devices incorporating the described aspects and features may also necessarily include additional components and features for implementing and practicing the claimed and described aspects. The innovations described herein can be implemented in a variety of implementations having different sizes, shapes, and configurations, which include large / small devices, chip-level components, multi-component systems (e.g., RF chains, communication interfaces, processors), distributed arrangements, end-user devices, etc.

[0046] Figure 1 FIG. 100 shows a wireless network that communicates according to some aspects. Wireless network 100 can include, for example, a 5G wireless network. As understood by those skilled in the art, Figure 1 components that appear in may have relevant counterparts in other network arrangements, which include, for example, cellular network arrangements and non-cellular network arrangements (e.g., device-to-device or peer-to-peer or adhoc network arrangements, etc.).

[0047] Figure 1The wireless network 100 shown in [Figure 0] includes a plurality of base stations 105 and other network entities. A base station can be a station that communicates with a UE, and it can also be referred to as an evolved Node B (eNB), a next-generation eNB (gNB), an access point, and so on. Each base station 105 can provide communication coverage for a specific geographical area. In 3GPP, depending on the context in which the term is used, the term "cell" can refer to this specific geographical coverage area of the base station, and / or the base station subsystem serving this coverage area. In the implementation of the wireless network 100 herein, the base stations 105 can be associated with the same operator or different operators (for example, the wireless network 100 can include multiple operator wireless networks), and can use one or more frequencies in the same frequency as adjacent cells (for example, one or more frequency bands in licensed spectrum, unlicensed spectrum, or a combination thereof) to provide wireless communication. In some examples, a single base station 105 or UE 115 can be operated by more than one network operation entity. In other examples, each base station 105 and UE 115 can be operated by a single network operation entity.

[0048] The base station can provide communication coverage for macro cells or small cells (such as pico cells or femto cells) and / or other types of cells. Generally, a macro cell covers a relatively large geographical area (for example, with a radius of several kilometers), and can allow unrestricted access by UEs with a service subscription to the network provider. Generally, small cells such as pico cells will cover a relatively small geographical area, which allows unrestricted access by UEs with a service subscription to the network provider. In addition, small cells such as femto cells also generally cover a relatively small geographical area (for example, a residence), and in addition to unrestricted access, it can also provide restricted access to UEs associated with this femto cell (for example, UEs in a Closed Subscriber Group (CSG), UEs for users in a home, etc.). The base station for a macro cell can be called a macro base station. The base station for a small cell can be called a small cell base station, a pico base station, a femto base station, or a home base station. In Figure 1 the example shown, base stations 105d and 105e are conventional macro base stations, while base stations 105a - 105c are macro base stations implementing one of 3-dimensional (3D), full-dimensional (FD), or massive MIMO. Base stations 105a - 105c make full use of their higher-dimensional MIMO capabilities to increase coverage and capacity by using 3D beamforming in both elevation and azimuth beamforming. Base station 105f is a small cell base station, and the small cell base station can be a home node or a portable access point. A base station can support one or more (for example, two, three, four, etc.) cells.

[0049] The wireless network 100 may support synchronous operation or asynchronous operation. For synchronous operation, the base stations may have similar frame timings, and transmissions from different base stations are approximately aligned in time. For asynchronous operation, the base stations may have different frame timings, and transmissions from different base stations are not aligned in time. In some scenarios, the network may be enabled or configured to handle dynamic switching between synchronous operation and asynchronous operation.

[0050] UEs 115 are scattered throughout the wireless network 100, and each UE may be stationary or mobile. It should be understood that although in the standards and specifications promulgated by the Third Generation Partnership Project (3GPP), a mobile device is commonly referred to as a user equipment (UE), a person skilled in the art may also refer to such a device as a mobile station (MS), user station, mobile unit, user unit, radio unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile user station, access terminal (AT), mobile terminal, wireless terminal, remote terminal, handheld device, terminal, user agent, mobile client, client, or some other suitable term. In this document, a "mobile" device or UE does not necessarily have the ability to move and may be stationary. Some non-limiting examples of mobile devices may include, for example, aspects of one or more of the UEs 115, which include mobile stations, cellular (cell) phones, smart phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, laptop computers, personal computers (PCs), notebooks, netbooks, smart books, tablet devices, and personal digital assistants (PDAs). The mobile device may additionally be an "Internet of Things" (IoT) or "Internet of Everything" (IoE) device, such as an automobile or other vehicle, satellite radio, global positioning system (GPS) device, logistics controller, drone, multi-copter, helicopter, smart energy or security device, solar panel or solar array, municipal lighting, water or other infrastructure; industrial automation and enterprise equipment; consumer and wearable devices, such as glasses, wearable cameras, smart watches, health or fitness trackers, mammalian implantable devices, gesture tracking devices, medical devices, digital audio players (e.g., MP3 players), cameras, game consoles, etc.; and digital home or smart home devices, such as home audio, video, and multimedia devices, appliances, sensors, vending machines, smart lighting, home security systems, smart meters, etc. In one aspect, the UE may be a device that includes a universal integrated circuit card (UICC). In another aspect, the UE may be a device that does not include a UICC. In some aspects, a UE that does not include a UICC may also be referred to as an IoE device. Figure 1The UEs 115-a - 115d in the implementation shown are examples of mobile smart phone type devices accessing the wireless network 100. The UE can also be a machine specifically configured to implement connected communication, which includes machine type communication (MTC), enhanced MTC (eMTC), narrowband IoT (NB-IoT), and so on. Figure 1 The UEs 115e - 115k shown are examples of various machines configured to access the wireless network 100.

[0051] Mobile devices such as the UE 115 may be able to communicate with any type of base station, whether it is a macro base station, a pico base station, a femto base station, a repeater, etc. In Figure 1 it, lightning (e.g., communication link) indicates the wireless transmission between the UE and the serving base station, or the desired transmission between base stations, and the backhaul transmission between base stations. The serving base station is the base station designated to serve the UE on the downlink and / or uplink. The backhaul communication between the base stations of the wireless network 100 can occur using wired and / or wireless communication links.

[0052] When operating in the wireless network 100, the base stations 105a - 105c use 3D beamforming and cooperative spatial techniques (such as cooperative multi-point (CoMP) or multi-connection) to serve the UEs 115-a and 115-b. The macro base station 105d performs backhaul communication with the base stations 105a - 105c and the small cell base station 105f. The macro base station 105d also sends multicast services subscribed to and received by the UEs 115c and 115d. Such multicast services can include mobile TV or streaming video, or can include other services for providing community information (e.g., weather emergencies or alerts such as Amber alerts or Gray alerts).

[0053] Wireless network 100 can support mission-critical communications for mission-critical devices (such as UE 115e, which is a drone) with ultra-reliable and redundant links. The redundant communication links with UE 115e include communication links from macro base stations 105d and 105e, as well as small cell base station 105f. Other machine type devices such as UE 115f (thermometer), UE 115g (smart meter), and UE 115h (wearable device) can communicate directly with base stations such as small cell base station 105f and macro base station 105e through wireless network 100, or in a multi-hop configuration, communicate by relaying their information to another user device that relays it to the network, such as UE 115f transmitting temperature measurement information to smart meter UE 115g, and then reporting the temperature measurement information to the network through small cell base station 105f. In a vehicle-to-vehicle (V2V) mesh network such as between UEs 115i - 115k communicating with macro base station 105e, wireless network 100 can also provide additional network efficiency through dynamic, low-latency TDD / FDD communication.

[0054] Figure 2 A block diagram showing the design of base station 105 and UE 115 is presented, where base station 105 and UE 115 can be Figure 1 one of the base stations in Figure 1 and one of the UEs in Figure 1 For the restricted association scenario (as described above), base station 105 can be small cell base station 105f in Figure 2 , and UE 115 can be UE115c or UE115D operating in the service area of base station 105f. To access small cell base station 105f, UE 115c or 115D will be included in the list of accessible UEs of small cell base station 105f. Base station 105 can also be some other type of base station. As Figure 2 shown, base station 105 can be equipped with antennas 234a to 234t, and UE 115 can be equipped with antennas 252a to 252r for facilitating wireless communication.

[0055] At base station 105, transmit processor 220 may receive data from data source 212 and control information from controller / processor 240. The control information may be for physical broadcast channel (PBCH), physical control format indicator channel (PCFICH), physical hybrid ARQ (automatic repeat request) indicator channel (PHICH), physical downlink control channel (PDCCH), enhanced physical downlink control channel (EPDCCH), MTC physical downlink control channel (MPDCCH), etc. The data may be for PDSCH, etc. Transmit processor 220 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively. Transmit processor 220 may also generate reference symbols, e.g., for primary synchronization signal (PSS) and secondary synchronization signal (SSS) and cell-specific reference signal. Transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, control symbols, and / or reference symbols (if applicable), and provide output symbol streams to modulators (MOD) 232a through 232t. Each modulator 232 may process its respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may additionally or alternatively process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 232a through 232t may be transmitted via antennas 234a through 234t, respectively.

[0056] At UE 115, antennas 252a through 252r may receive downlink signals from base station 105 and may provide the received signals to demodulators (DEMOD) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, down-convert, and digitize) its respective received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. MIMO detector 256 may obtain the received symbols from demodulators 254a through 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. Receive processor 258 may process (e.g., demodulate, de-interleave, and decode) the detected symbols, provide the decoded data for UE 115 to data sink 260, and provide the decoded control information to controller / processor 280.

[0057] On the uplink, at the UE 115, the transmit processor 264 may receive data (e.g., for the physical uplink shared channel (PUSCH)) from the data source 262, receive control information (e.g., for the physical uplink control channel (PUCCH)) from the controller / processor 280, and process the data and control information. In addition, the transmit processor 264 may also generate reference symbols for reference signals. Symbols from the transmit processor 264 may be precoded (if applicable) by the TX MIMO processor 266, further processed (e.g., for SC-FDM, etc.) by the modulators 254a to 254r, and sent back to the base station 105. At the base station 105, the uplink signals from the UE 115 may be received by the antenna 234, processed by the demodulator 232, detected (if applicable) by the MIMO detector 236, and further processed by the receive processor 238 to obtain the decoded data and control information transmitted by the UE 115. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240.

[0058] The controller / processors 240 and 280 may direct operations at the base station 105 and the UE 115, respectively. The controller / processor 240 and / or other processors and modules at the base station 105 and / or the controller / processor 280 and / or other processors and modules at the UE 115 may perform or direct the execution of various processes for performing the techniques described herein, such as for performing or directing Figures 5 - 7 the execution of the functional modules shown in, and / or for implementing other processes of the techniques described herein. The memories 242 and 282 may store data and program codes for the base station 105 and the UE 115, respectively. The scheduler 244 may schedule data transmissions by the UE on the downlink and / or uplink.

[0059] Wireless communication systems operated by different network operating entities (e.g., network operators) may share spectrum. In some instances, a network operating entity may be configured to use the entire designated shared spectrum for at least a period of time before another network operating entity uses the entire designated shared spectrum during different time periods. Thus, in order to allow a network operating entity to use the entire designated shared spectrum and to mitigate interference communication between different network operating entities, certain resources (e.g., time) may be partitioned and allocated to different network operating entities for certain types of communication.

[0060] For example, certain time resources reserved for exclusive communication can be allocated to a network operation entity so that the network operation entity can use the entire shared spectrum. Other time resources can also be allocated to the network operation entity, where the entity is given priority over other network operation entities to use the shared spectrum for communication. If the network operation entity with priority does not utilize these time resources that are preferentially used by the network operation entity, other network operation entities can utilize them on an opportunistic basis. Additional time resources can be allocated to any network operator for use on an opportunistic basis.

[0061] The access to the shared spectrum and the arbitration of time resources among different network operation entities can be centrally controlled by a separate entity, determined autonomously according to a predefined arbitration scheme, or determined dynamically based on the interaction between the wireless nodes of the network operator.

[0062] In some cases, the UE 115 and the base station 105 can operate in a shared radio spectrum band that includes licensed or unlicensed (e.g., contention-based) spectrum. In the unlicensed frequency portion of the shared radio spectrum band, the UE 115 or the base station 105 can traditionally perform a medium sensing process to compete for access to the spectrum. For example, the UE 115 or the base station 105 can perform a listen-before-talk (LBT) process (such as a clear channel assessment (CCA)) before communication to determine whether the shared channel is available. The CCA can include an energy detection process to determine whether there is any other active transmission. For example, the device can infer that a change in the received signal strength indicator (RSSI) of the power meter indicates that the channel is occupied. Specifically, signal power concentrated in a certain bandwidth and exceeding a predetermined noise floor can indicate another wireless transmitter. The CCA can also include the detection of a specific sequence indicating channel use. For example, another device can send a specific preamble before sending a data sequence. In some cases, the LBT process can include: the wireless node adjusting its own backoff window based on the amount of energy detected on the channel and / or the acknowledgment / negative acknowledgment (ACK / NACK) feedback (as a proxy for collisions) for the packets sent by itself.

[0063] In a communication system with beamformed operations (e.g., a system where a device communicates via multiple beams), such as but not limited to millimeter wave (mmWave) systems, the interference observed by a receiver may depend on multiple factors. For example, the interference observed by the receiver depends on the beam direction the receiver is listening to and the beam direction from which the interference is coming. For this reason, depending on the scheduling decisions of the serving cell and neighboring cells, the interference seen by the UE may change significantly. For example, if a neighboring cell (e.g., a neighboring base station) transmits on a beam in the same direction as the UE, the UE may be significantly interfered with when receiving signals from the serving cell (e.g., the serving base station). Or, if the neighboring cell transmits on a beam away from the UE, the UE may be little or not interfered with when receiving signals from the serving cell.

[0064] Time-varying, beam-dependent interference may cause problems in a wireless communication system. For example, a UE channel quality indicator (CQI) report may be based on the interference in a first time slot, but during a later transmit or receive time slot, the interference may be different (e.g., due to the scheduling of different beams of neighboring cells). Such interference differences may lead to an underestimation (e.g., if the CQI is based on less interference) or overestimation (e.g., if the CQI is based on more interference) of the channel quality, which may result in throughput loss. As another example, the UE may not be able to achieve the target block error rate (BLER) due to high interference during at least one time slot, which may lead to outer loop instability and throughput loss. As another example, the UE may select a different antenna panel due to interference from a neighboring cell, which may make it difficult to receive from or transmit to the serving cell, resulting in throughput loss.

[0065] This document describes systems and methods that consider time-varying, beam-dependent interference. For illustration purposes, aspects of the present disclosure describe UE-assisted transmission configuration indication (TCI) signaling for interference coordination. For example, a UE may detect one or more beams of an adjacent base station that cause interference at the UE, and the UE may send an interference identification message indicating the one or more beams to a serving base station. The serving base station may send the interference identification message to the adjacent base station via backhaul communication. The adjacent base station receives the interference identification message and, in some implementations, schedules a set of beams for upcoming transmissions based on the interference identification message. For example, the adjacent base station may schedule the interference beams for transmission during a time period when the UE is not scheduled to transmit or receive data. Alternatively, the adjacent base station may not consider the interference identification message during scheduling, however, the adjacent base station may reply with a scheduling message and the serving base station, the UE, or both may perform operations to consider the interference caused by the set of beams. In this way, time-varying, beam-dependent interference can be considered and throughput loss can be reduced or prevented.

[0066] Figure 3 FIG. 4 is a block diagram of an example wireless communication system 300 that is configured to provide a scheduling message from an adjacent base station to a base station (e.g., the serving cell of one or more UEs). In some examples, wireless communication system 300 may implement aspects of wireless network 100. For example, wireless communication system 300 may include UE 115. Wireless communication system 300 may also include a first base station 310 and a second base station 320. Although one UE and two base stations are shown, in other implementations, wireless communication system 300 may include multiple UEs 115, more than two base stations, or both.

[0067] UE 115 includes a processor 302, a memory 304, a transmitter 306, and a receiver 308. Processor 302 may be configured to execute instructions stored in memory 304 to perform the operations described herein. In some implementations, processor 302 includes or corresponds to controller / processor 280, and memory 304 includes or corresponds to memory 282.

[0068] The transmitter 306 is configured to send data to one or more other devices, and the receiver 308 is configured to receive data from one or more other devices. For example, the transmitter 306 can send data, and the receiver 308 can receive data via a network (such as a wired network, a wireless network, or a combination thereof). For example, the UE 115 can be configured to send or receive data via a direct device-to-device connection, a local area network (LAN), a wide area network (WAN), a modem-to-modem connection, the Internet, an intranet, an extranet, a cable transmission system, a cellular communication network, any combination of the above, or any other communication network that allows two or more electronic devices to communicate and that is known now or developed later. In some implementations, the transmitter 306 and the receiver 308 can be replaced by a transceiver. Additionally or alternatively, the transmitter 306, the receiver 308, or both can include or correspond to one or more components of the UE 115 described with reference to Figure 2 one or more components of the UE 115 described with reference to

[0069] The first base station 310 includes a processor 312, a memory 314, a transmitter 316, and a receiver 318. The processor 312 can be configured to execute instructions stored in the memory 314 to perform the operations described herein. In some implementations, the processor 312 includes or corresponds to the controller / processor 240, and the memory 314 includes or corresponds to the memory 242.

[0070] The transmitter 316 is configured to send data to one or more other devices, and the receiver 318 is configured to receive data from one or more other devices. For example, the transmitter 316 can send data, and the receiver 318 can receive data via a network (such as a wired network, a wireless network, or a combination thereof). For example, the first base station 310 can be configured to send or receive data via a direct device-to-device connection, a LAN, a WAN, a modem-to-modem connection, the Internet, an intranet, an extranet, a cable transmission system, a cellular communication network, any combination of the above, or any other communication network that allows two or more electronic devices to communicate and that is known now or developed later. In some implementations, the transmitter 316 and the receiver 318 can be replaced by a transceiver. Additionally or alternatively, the transmitter 316, the receiver 318, or both can include or correspond to one or more components of the base station 105 described with reference to Figure 2 one or more components of the base station 105 described with reference to

[0071] The second base station 320 includes a processor 322, a memory 324, a transmitter 326, and a receiver 328. The processor 322 can be configured to execute instructions stored in the memory 324 to perform the operations described herein.

[0072] The transmitter 326 is configured to send data to one or more other devices, and the receiver 328 is configured to receive data from one or more other devices. For example, the transmitter 326 can send data, and the receiver 328 can receive data via a network (such as a wired network, a wireless network, or a combination thereof). For example, the second base station 320 can be configured to send or receive data via a direct device-to-device connection, a LAN, a WAN, a modem-to-modem connection, the Internet, an intranet, an extranet, a cable transmission system, a cellular communication network, any combination of the above, or any other communication network that allows two or more electronic devices to communicate therein, and that is known now or developed later. In some implementations, the transmitter 326 and the receiver 328 can be replaced by a transceiver. Additionally or alternatively, the transmitter 326, the receiver 328, or both can include or correspond to one or more components of the base station 105 described with reference to Figure 2 one or more components of the base station 105.

[0073] In a particular implementation, the wireless communication system 300 implements a fifth generation (5G) new radio (NR) network. For example, the wireless communication system 300 can include multiple 5G-capable UEs 115 and multiple 5G-capable base stations (such as the first base station 310 and the second base station 320), which are configured to operate according to 5G NR network protocols (such as those defined by 3GPP). In some implementations, the wireless communication system 300 is configured to support wireless communication in the millimeter wave band or other high frequencies, for example, between the UE 115 and the first base station 310. Compared with communication in the sub-6 GHz band, such communication can be performed using narrower directional beams.

[0074] In Figure 3 the example shown, the first base station 310 is the serving base station of the UE 115, and the second base station 320 is an adjacent base station of the first base station 310. For example, the UE 115 can be located within a first serving cell served by the first base station 310, and an adjacent second serving cell is served by the second base station 320. Because the serving cells are adjacent, the transmission beam generated by the second base station 320 may cause interference to the communication between the UE 115 and the first base station 310.

[0075] During operation of the wireless communication system 300, the UE 115 can be associated with the first base station 310. For example, the UE 115 can enter the serving cell of the first base station 310. The second base station 320 is an adjacent base station of the first base station 310 (for example, the serving cell served by the second base station 320 is adjacent to the serving cell served by the first base station 310). Therefore, the transmission beam from the second base station 320 may cause interference at the UE 115.

[0076] To determine which beams from the second base station 320 may cause interference at the UE 115, the UE 115 may detect one or more interfering beams generated by the second base station 320. For example, the UE 115 may perform one or more detection operations to detect one or more interfering beams (e.g., "primary interference sources") generated by the second base station 320. In some implementations, the one or more interfering beams correspond to interference that meets an interference threshold.

[0077] In some implementations, detecting the one or more interfering beams includes: fixing the receiver spatial quasi co-location (QCL) to the first base station 310 at the UE 115, and measuring the received signal strength of the interference reference signal (RSRP). For example, the UE 115 may fix the receiver spatial QCL to the first base station 310 and measure the RSRP of the received beam to the first base station 310. In some such implementations, the RSRP is measured based on the interfering synchronization signal block (SSB) beam. For example, the reference signal may be one or more SSB beams. In other such implementations, the RSRP is measured based on the channel state information reference signal (CSI-RS). For example, the reference signal may be CSI-RS. In some other implementations, detecting the one or more interfering beams includes: the UE 115 scanning the receiver spatial QCL across multiple received beams and measuring the RSRP for each of the multiple received beams. For example, the UE 115 may include multiple antennas, each of which may be capable of generating multiple received beams, and the UE 115 may scan the receiver spatial QCL across multiple received beams and measure the RSRP of each received beam to determine (e.g., detect or identify) one or more interfering beams.

[0078] After detecting one or more interfering beams, the UE 115 may generate an interference identification message 330 indicating the one or more interfering beams. For example, the UE 115 may generate a message including a beam indicator 332 indicating the one or more interfering beams. Although described as a separate message, in some other implementations, the beam indicator 332 of the interference identification message 330 may be included in and / or appended to a different existing message.

[0079] After generating the interference identification message 330, the UE 115 may send the interference identification message 330 indicating the one or more interference beams to the first base station 310. For example, the UE 115 may send the interference identification message 330 to the first base station 310 via a wireless connection between the UE 115 and the first base station 310. The first base station 310 may receive the interference identification message 330 indicating the one or more interference beams detected by the UE 115. As explained above, the one or more beams may be generated by the second base station 320 (e.g., an adjacent base station of the first base station 310). Based on receiving the interference identification message 330, the first base station 310 may send the interference identification message 330 to the second base station 320 via backhaul communication. For example, the first base station 310 may send the interference identification message 330 to the second base station 320 via a backhaul connection. The backhaul connection may be wired and / or wireless. In some implementations, the interference identification message 330 includes (e.g., the beam indicator 332 is): physical cell identity (PCI) information corresponding to the one or more interference beams and SSB beam identifiers corresponding to the one or more interference beams, other TCI state references corresponding to the one or more interference beams, or both.

[0080] In Figure 4 an example of detecting interference beams and sending interference identification messages is shown. Figure 4 FIG. shows a wireless communication system 400 configured to perform beamforming on data and provide interference identification messages from a UE to an adjacent base station. The wireless communication system 400 may include or correspond to the wireless communication system 300. For example, the wireless communication system 400 includes a UE 115, a first base station 310, and a second base station 320.

[0081] As Figure 4 shown, the second base station 320 may communicate with UEs within its serving cell via one or more beams, which include a first beam 402, a second beam 404, and a third beam 406. As Figure 4 shown, the first beam 402 may be directed towards the direction of the UE115. Therefore, the first beam 402 may cause a significant amount of interference to the signal received by the UE 115 from the first base station 310 via the fourth beam 408. Additionally, due to the direction of the second beam 404, the second beam 404 may cause some interference at the UE 115 (although less than the first beam 402). Due to the direction of the third beam 406 (e.g., in a direction away from the UE 115), the third beam 406 is less likely to cause perceivable interference at the UE 115.

[0082] To determine which beams cause interference at UE 115, UE 115 may perform one or more detection operations (as described above) to detect one or more interfering beams generated by the second base station 320. In Figure 4 the example, UE 115 may determine that the interference caused by the first beam 402 meets a first threshold, and thus the first beam 402 is an interfering beam (e.g., a primary interference source). Since the interference meets the first threshold, the first beam 402 may be classified in a first group of beams corresponding to constrained beams. Additionally, UE 115 may determine that the interference caused by the second beam 404 does not meet the first threshold but meets a second threshold (i.e., is less than the first threshold), and thus the second beam 404 is a "somewhat" interfering beam. Since the interference meets the second threshold (but not the first threshold), the second beam 404 may be classified in a second group of beams corresponding to partially constrained transmission parameters. Additionally, UE 115 may determine that the interference caused by the third beam 406 does not meet either threshold, and thus the third beam 406 is not an interfering beam. Since the interference does not meet either threshold, the third beam 406 may be classified in a third group of beams corresponding to unconstrained transmission parameters.

[0083] UE 115 may generate an interference identification message 330 indicating the grouping situation of the first beam 402, the second beam 404, and the third beam 406. For example, the interference identification message 330 may indicate that the first beam 402 is included in the first group (corresponding to constrained beams), the second beam 404 is included in the second group (corresponding to partially constrained transmission parameters), and the third beam 406 is included in the third group (corresponding to unconstrained beams / transmission parameters). In some implementations, the interference identification message 330 may also indicate the time slots corresponding to specific beams requested by UE 115. For example, a first time slot may be requested as a constrained time slot (e.g., request to schedule unconstrained beams), another time slot may be requested as a partially constrained time slot (e.g., request to schedule a beam with partially constrained transmission parameters), and another time slot may be requested as an unconstrained time slot (e.g., any beam may be scheduled during this time slot). In some implementations, in this way, UE 115 may assist the second base station 320 in scheduling one or more beams for transmission.

[0084] After generating the interference identification message 330, the UE 115 sends the interference identification message 115 to the first base station 310 (e.g., the serving base station). The first base station 310 may send (e.g., forward) the interference identification message 330 to the second base station 320 via backhaul communication. In some implementations, the second base station 320 may schedule one or more beams for transmission according to the interference identification message 330, as further described herein. After scheduling one or more beams, the second base station 320 may send a scheduling message to the first base station 310 via second backhaul communication, as further described herein.

[0085] Return to Figure 3 , in some implementations, the interference identification message 330 may include interference beams of multiple neighboring base stations. For example, the UE 115 may detect the N strongest cells and the first M strongest beams of each cell, where N and M are each integers. In such an implementation, the interference identification message 330 may be sent from the first base station 310 to multiple neighboring cells (e.g., multiple neighboring base stations). In some such implementations, the one or more interference beams may be the strongest beams of the strongest cell, and the strongest cell may correspond to the second base station 320. To determine the strongest cell (or the N strongest cells), the UE 115 may perform one or more detection operations. For example, the UE 115 may determine the maximum RSRP on all beams of each cell (each cell among multiple cells) to determine the strongest cell. For example, the UE 115 may determine the RSRP of each beam of each cell and determine the cell with the highest aggregated RSRP as the strongest cell. As another example, the UE 115 may determine the average RSRP on the strongest beam to determine the strongest cell. For example, the cell with the highest average RSRP of the strongest beam may be determined as the strongest cell. Determining the strongest cell or the N strongest cells may determine (e.g., identify) which base stations (e.g., sent by the first base station 310) the interference identification message 330 is to be sent to. After determining which additional cells have strong interference beams (e.g., the main interference sources), the first base station 310 may send (e.g., forward) the interference identification message 330 to one or more additional base stations via one or more additional backhaul communications. In such an implementation, the interference identification message 330 may indicate the beams (e.g., the first M strongest beams) corresponding to each of the one or more additional base stations.

[0086] The second base station 320 may receive, via backhaul communication, an interference identification message 330 from the first base station 310 indicating one or more interference beams detected by the UE 115. The one or more interference beams may be generated by the second base station 320. The interference identification message 330 may indicate a request by the UE 115 for information related to the one or more interference beams, or a request for scheduling related to the one or more interference beams.

[0087] After receiving the interference identification message 330, the second base station 320 may schedule a set of beams for an upcoming transmission. In some implementations, scheduling the set of beams is independent of the interference identification message 330, as further described herein. In some other implementations, scheduling the set of beams is based on the interference identification message 330, as further described herein.

[0088] The second base station 320 may generate a scheduling message 334 that indicates a set of beams of the second base station 320 that are scheduled for an upcoming transmission. For example, after scheduling the set of beams for an upcoming transmission (e.g., in an upcoming time slot), the second base station 320 may generate a scheduling message 334 that indicates the set of beams (and in some implementations, the time slot to which each beam is scheduled). The scheduling message 334 may include a beam indicator 336 that indicates the set of beams that are scheduled for the upcoming transmission. Although described as a separate message, in some other implementations, the beam indicator 336 of the scheduling message 334 may be included in and / or appended to a different existing message. The scheduling message 334 may correspond to an upcoming time period (e.g., an upcoming time slot) such that even if there is a delay on the backhaul between the second base station 320 and the first base station 310, or a delay between the first base station 310 and the UE 115, the information can reach the appropriate device (e.g., the first base station 310 or the UE 115) while the information is still relevant. For example, the scheduling message 334 may correspond to multiple time slots (e.g., time gaps), and the multiple time slots may be upcoming (e.g., future) time slots compared to the current time slot at the first base station 310 and the UE 115. In some implementations, the scheduling message 334 may indicate that one or more time slots are not scheduled at the second base station 320. For example, the scheduling message 334 (e.g., the beam indicator 336) may include an idle TCI state corresponding to the unscheduled time slots.

[0089] After generating the scheduling message 334, the second base station 320 may send the scheduling message 334 to the first base station 310 via the second backhaul communication. The first base station 310 may receive the scheduling message 334 from the second base station 320 via the second backhaul communication, where the scheduling message 334 indicates a set of beams of the second base station 320 that are scheduled for an upcoming transmission. After receiving the scheduling message 334, the first base station 310 may send (e.g., forward) the scheduling message 334 to the UE 115. The UE 115 may receive the scheduling message 334 from the first base station 310, where the scheduling message 334 indicates a set of beams of the second base station 320 that are scheduled for an upcoming transmission. In this way, the first base station 310 and the UE 115 may know the scheduling of the beams for the upcoming transmission at the second base station 320. In some implementations, the first base station 310, the UE 115, or both may perform one or more operations to address potential interference caused by the set of beams.

[0090] In an implementation where the interference identification message 330 is sent to one or more additional base stations, the first base station 310 may receive one or more additional scheduling messages from the one or more additional base stations via one or more second additional backhaul communications, where the scheduling messages indicate one or more sets of beams of the one or more additional base stations that are scheduled for an upcoming transmission. After receiving the one or more additional scheduling messages, the first base station 310 may send (e.g., forward) the one or more additional scheduling messages to the UE 115. In this way, the first base station 310 and the UE 115 may know the scheduling of the interference beams from other neighboring cells (e.g., other neighboring base stations).

[0091] In some implementations, the second base station 320 may schedule a beam set (for an upcoming transmission) independently of the interference identification message 330. Such an implementation may be referred to as “passive UE-assisted TCI signaling”. In such an implementation, the second base station 320 may schedule the set of beams based on criteria at the second base station 320 and independently of any requests in the interference identification message 330. However, the second base station 320 may provide a scheduling message 334 to indicate to the first base station 310 and the UE 115 the scheduling of the set of beams. In some such implementations, the scheduling message 334 may include a list of the set of beams scheduled for transmission. For example, the list (e.g., beam indicator 336) may be a list of TCI states corresponding to the beam set scheduled for the upcoming transmission. In some other implementations, the scheduling message 334 (e.g., beam indicator 336) may include a bitmap. Each value of the bitmap may correspond to a different beam in the beam set. For example, a first value (e.g., ‘1’ value) of a particular bit of the bitmap may indicate that the beam corresponding to that particular bit is scheduled, and a second value (e.g., ‘0’ value) of a particular bit of the bitmap may indicate that the beam corresponding to that particular bit is not scheduled. The bitmap may correspond to a single neighboring cell or multiple neighboring cells. The bitmap may have a higher specificity than the beam list of the cell, as the bitmap may indicate a particular beam of a particular cell.

[0092] In some implementations, the first base station 310, the UE 115, or both may perform one or more operations based on the scheduling message 334 to address interference caused by a set of beams scheduled for an upcoming transmission. For example, as a non-limiting example, the first base station 310 may reduce the rank used to schedule transmissions to or from the UE 115, reduce the modulation and coding scheme (MCS) corresponding to transmissions to or from the UE 115, select a different precoder to schedule transmissions to or from the UE 115, allocate a larger frequency domain for transmissions to or from the UE 115, enable slot aggregation for transmissions to or from the UE 115, or a combination thereof. As another example, as a non-limiting example, the UE 115 may enable different antenna panels based on the set of beams, enable interference detection and cancellation operations based on the set of beams, perform channel estimation based on previous interference corresponding to the set of beams, or a combination thereof. These operations may reduce or prevent throughput loss that would otherwise be caused by interference from the beams of the second base station 320.

[0093] In some other implementations, the second base station 320 may schedule the beam set (for an upcoming transmission) based on the interference identification message 330. Such an implementation may be referred to as "active UE-assisted TCI signaling". In active UE-assisted TCI signaling, the second base station 320 may use a best-effort approach to satisfy the requests from the UE 115. For illustration purposes, the interference identification message 330 may include multiple sets of beams corresponding to different requests from the UE. For example, the beams may be grouped into a first set, a second set, and a third set. Such a description is not restrictive, and in other implementations, there may be more than three or fewer than three sets. The multiple sets of beams may include a first set of beams corresponding to unconstrained transmission parameters. For example, the beams that do not correspond to significant interference at the UE 115 may be grouped into the first set, and for this first set of beams, the UE 115 does not have any specific requests regarding scheduling. The multiple sets of beams may include a second set of beams corresponding to partially constrained transmission parameters. For example, the beams corresponding to interference that meets a second threshold but does not meet a first threshold may be grouped into the second set, and for the second set of beams, the UE 115 requests the second base station 320 to schedule these beams using partially constrained transmission parameters. In some such implementations, the partially constrained transmission parameters include rank, transmission power, precoding, or a combination thereof. The multiple sets of beams may further include a third set of beams corresponding to constrained beams. For example, the beams corresponding to interference that meets the first threshold may be grouped into the third set, and for the third set of beams, the UE 115 requests the second base station 320 not to schedule the transmission of the beams at a specific time. When the second base station 320 schedules the beam set based on the requests from the UE 115, the scheduling message 334 indicates the scheduling at the second base station 320 considering one or more different requests from the UE 115.

[0094] In addition to the grouping of the beams, the interference identification message 330 may also indicate the requests of the UE 115 for one or more time slots. For example, the interference identification message 330 may indicate a request for one or more unconstrained time slots, one or more partially constrained time slots, one or more constrained time slots, or a combination thereof. The unconstrained time slots may correspond to the time slots for which the UE 115 has not made a request (e.g., any type of beam may be scheduled). The partially constrained time slots may correspond to the time slots for which the UE 115 requests to send interference beams with constrained parameters (e.g., the beams in the first set, the second set, or both). The constrained time slots may correspond to the time slots for which the UE 115 requests not to send interference beams (e.g., the beams in the first set). In some other implementations, different types of time slots may be defined by the second base station 320, or the ratio of the time slots may be defined by a radio standard, rather than being requested in the interference identification message 330.

[0095] The second base station 320 may schedule the beam set based on a request from the UE 115. By way of example, the second base station 320 may schedule at least one interference beam among one or more interference beams for transmission during one or more unconstrained time slots. For example, the second base station 320 may schedule any one or more of the first beam 402, the second beam 404, or the third beam 406 for transmission during one or more unconstrained time slots. By way of another example, the second base station 320 may schedule at least one interference beam among one or more interference beams for transmission with constrained parameters during one or more partially constrained time slots. In some implementations, the constrained parameters include a reduced rank, limited transmission power, constrained precoding, or a combination thereof. For example, the second base station 320 may schedule the first beam 402 during a partially constrained time slot having a reduced rank, limited transmission power, constrained precoding, or a combination thereof. The constrained parameters may be requested by the UE 115, selected by the second base station 320, or specified in one or more wireless communication standards. By way of another example, the second base station 320 may avoid scheduling any interference beam among one or more interference beams for transmission during one or more constrained time slots. For example, the second base station 320 may avoid scheduling the first beam 402 for transmission during one or more constrained time slots. During one or more constrained time slots, the second beam 404 and the third beam 406 may still be scheduled.

[0096] After scheduling the beam set based on the interference identification message 330, the second base station 320 may indicate to the first base station 310 and the UE 115 whether the request of the UE 115 has been satisfied. For example, the scheduling message 334 may indicate whether the second base station 320 has satisfied the request included in the interference identification message 330. In some implementations, the indication of satisfaction of the request may replace the full scheduling, which may reduce the size of the scheduling message 334. Additionally, since the second base station 320 makes a best effort to schedule the time slot requests, in some cases, the scheduling message 334 may indicate that these requests are not satisfied (e.g., if the second base station 320 cannot satisfy both the request from the UE 115 and the requirements of the second base station 320).

[0097] As referred to above Figure 3As described, the wireless communication system 300 can be configured to share interference identification from a UE to an adjacent base station. For example, UE 115 can send an interference identification message 330 to a first base station 310 (e.g., serving base station), and the first base station 310 can send the interference identification message 330 to a second base station 320 via backhaul communication. By receiving the interference identification message 330, the second base station 320 can schedule one or more beams for transmission in a way that reduces interference to transmissions to or from UE 115, thereby reducing or preventing throughput loss that would otherwise be caused by interference from at least some of the beams generated by the second base station 320. In some other implementations, the second base station 320 may not schedule beams for transmission based on a request from UE 115. However, the second base station 320 can send a scheduling message 334 to the first base station 310 via a second backhaul communication, and the first base station 310 can send the scheduling message 334 to UE 115. By receiving information about the scheduling of upcoming beams to be used by the second base station 320 for transmission (e.g., TCI state), the first base station 310, UE 115, or both can perform operations that can reduce or prevent throughput loss that would otherwise be caused by interference from at least some of the beams generated by the second base station 320.

[0098] Figure 5 is a block diagram illustrating example blocks that are executed to implement one or more aspects of the present disclosure. As Figure 8 shown, example blocks will also be described for UE 800. Figure 8 is a block diagram illustrating a UE 800 configured in accordance with one or more aspects of the present disclosure. In some implementations, UE 800 includes or corresponds to Figures 1 - 4 UE 115. UE 800 can include the structures, hardware, and components as shown for Figure 2 UE 115. For example, UE 800 can include a controller / processor 280 for executing logic or computer instructions stored in a memory 282 and for controlling the components of UE 800 that provide the features and functions of UE 800. Under the control of the controller / processor 280, UE 800 can send and receive signals via a wireless radio unit 801a-r and antennas 252a-r. As Figure 2 shown for UE 115, the wireless radio unit 801a-r can include various components and hardware, which include modulators / demodulators 254a-r, a MIMO detector 256, a receive processor 258, a transmit processor 264, and a TX MIMO processor 266.

[0099] At block 500, a UE associated with a first base station detects one or more interference beams generated by a second base station. The second base station is an adjacent base station of the first base station. For example, UE 800 may execute interference detection logic 802 stored in memory 282 under the control of controller / processor 280. The execution environment of interference detection logic 802 provides UE 800 with the function of detecting one or more interference beams generated by the second base station. In some implementations, the execution of interference detection logic 802 may cause UE 800 to fix the receiver spatial QCL to the first base station and measure the interference RSRP (e.g., as a non-limiting example, based on an SSB beam or CSI-RS). In some other implementations, the execution of interference detection logic 802 may cause UE 800 to scan the receiver spatial QCL across multiple receive beams and measure the RSRP for each reference beam among the multiple receive beams (e.g., based on an SSB beam or CSI-RS, as a non-limiting example).

[0100] At block 501, the UE sends an interference identification message indicating the one or more interference beams to the first base station. For example, UE 800 may execute interference identification message sending logic 803 stored in memory 282 under the control of controller / processor 280. The execution environment of interference identification message sending logic 803 provides UE 800 with the function of sending an interference identification message indicating the one or more interference beams to the first base station via antenna 252a-r.

[0101] At block 502, the UE receives a scheduling message from the first base station, the scheduling message indicating a set of beams of the second base station that are scheduled for an upcoming transmission. For example, UE 800 may execute scheduling message receiving logic 804 stored in memory 282 under the control of controller / processor 280. The execution environment of scheduling message receiving logic 804 provides UE 800 with the function of receiving a scheduling message from the first base station via antenna 252a-r, the scheduling message indicating a set of beams of the second base station that are scheduled for an upcoming transmission.

[0102] Figure 6 is a block diagram showing example blocks that are executed to implement one or more aspects of the present disclosure. As Figure 9 shown, these example blocks will also be described with respect to base station 900. Figure 9 is a block diagram showing base station 900 configured according to one or more aspects of the present disclosure. In some implementations, base station 900 may include or correspond to Figure 1 and Figure 2 base station 105 of Figure 3 and Figure 4 the first base station 310 of Figure 2The structure, hardware, and components shown in base station 105. For example, base station 900 may include a controller / processor 240 for executing logic or computer instructions stored in a memory 242 and for controlling the components of base station 900 that provide the features and functions of base station 900. Under the control of controller / processor 240, base station 900 may transmit and receive signals via wireless radio units 901a-t and antennas 234a-t. As Figure 2 shown for base station 105 in

[0103] At block 600, a first base station receives from a UE an interference identification message for indicating one or more interference beams detected by the UE. The one or more interference beams are generated by a second base station that is an adjacent base station to the first base station. For example, base station 900 may execute interference identification message receiving logic 902 stored in memory 242 under the control of controller / processor 240. The execution environment of interference identification message receiving logic 902 provides base station 900 with the function of receiving, via antennas 234a-t, an interference identification message indicating one or more interference beams generated by the second base station and detected by the UE.

[0104] At block 601, the first base station transmits the interference identification message to the second base station via backhaul communication. For example, base station 900 may execute interference identification message transmitting logic 903 stored in memory 242 under the control of controller / processor 240. The execution environment of interference identification message transmitting logic 903 provides base station 900 with the function of transmitting the interference identification message to the second base station via backhaul communication.

[0105] In some implementations, the first base station may receive a scheduling message from the second base station via second backhaul communication, the scheduling message indicating a set of beams of the second base station that are scheduled for an upcoming transmission. For example, base station 900 may execute scheduling message receiving logic 904 stored in memory 242 under the control of controller / processor 240. The execution environment of the scheduling message receiving logic 904 provides base station 900 with the function of receiving a scheduling message from the second base station via second backhaul communication, the scheduling message indicating a set of beams of the second base station that are scheduled for an upcoming transmission. In some such implementations, the first base station may send the scheduling message to the UE. For example, base station 900 may execute scheduling message sending logic 905 stored in memory 242 under the control of controller / processor 240. The execution environment of the scheduling message sending logic 905 provides base station 900 with the function of sending the scheduling message to the UE via antennas 234a-t.

[0106] Figure 7 is a block diagram showing example blocks that are executed to implement one or more aspects of the present disclosure. As Figure 10 shown, these example blocks will also be described with respect to base station 1000. Figure 10 is a block diagram showing base station 1000 configured according to one or more aspects of the present disclosure. In some implementations, base station 1000 may include or correspond to Figure 1 and Figure 2 base station 105 of Figure 3 and Figure 4 second base station 320 of Figure 2 Base station 1000 may include the structure, hardware, and components as shown for base station 105 of Figure 2 . For example, base station 1000 may include controller / processor 240, which is used to execute logic or computer instructions stored in memory 242 and to control the components of base station 1000 that provide the features and functions of base station 1000. Under the control of controller / processor 240, base station 1000 may send and receive signals via wireless radio units 901a-t and antennas 234a-t. As

[0107] At block 700, the second base station receives, via backhaul communication, an interference identification message from the first base station for indicating one or more interference beams detected by the UE. The one or more interference beams are generated by the second base station. The second base station is an adjacent base station of the first base station. For example, base station 1000 may execute, under the control of controller / processor 240, interference identification message receiving logic 1002 stored in memory 242. The execution environment of the interference identification message receiving logic 1002 provides base station 1000 with the function of receiving an interference identification message from the first base station via backhaul communication. The interference identification message indicates one or more interference beams detected by the UE and generated by base station 1000.

[0108] At block 701, the second base station generates a scheduling message that indicates a set of beams of the second base station that are scheduled for an upcoming transmission. For example, base station 1000 may execute, under the control of controller / processor 240, scheduling message generating logic 1003 stored in memory 242. The execution environment of the scheduling message generating logic 1003 provides base station 1000 with the function of generating a scheduling message that indicates a set of beams of base station 1000 that are scheduled for an upcoming transmission.

[0109] In some implementations, to generate the scheduling message, the second base station may schedule the set of beams for an upcoming transmission. For example, base station 1000 may execute, under the control of controller / processor 240, scheduling logic 1005 stored in memory 242. The execution environment of the scheduling logic 1005 provides base station 1000 with the function of scheduling the set of beams for an upcoming transmission. In some implementations, the execution of the scheduling logic 1005 may schedule the set of beams independently of the interference identification message. In some other implementations, the execution of the scheduling logic 1005 may schedule the set of beams based on the interference identification message (e.g., based on one or more sets of beams indicated in the interference identification message and / or one or more unconstrained time slots, one or more partially constrained time slots, one or more constrained time slots, or a combination thereof indicated in the interference identification message).

[0110] At block 702, the second base station sends the scheduling message to the first base station via second backhaul communication. For example, base station 1000 may execute, under the control of controller / processor 240, scheduling message sending logic 1004 stored in memory 242. The execution environment of the scheduling message sending logic 1004 provides base station 1000 with the function of sending the scheduling message to the first base station via second backhaul communication.

[0111] In some aspects, techniques for implementing UE-assisted beam selection at an adjacent cell may include additional aspects, such as any single aspect described below or any combination of aspects, or in combination with one or more other processes or devices described elsewhere herein. In some aspects, implementing UE-assisted beam selection at an adjacent cell may include means for detecting, at a UE associated with a first base station, one or more interfering beams generated by a second base station. The second base station is an adjacent base station of the first base station. The means may also be configured to send an interference identification message indicating the one or more interfering beams to the first base station. The means may further be configured to receive a scheduling message from the first base station, the scheduling message indicating a set of beams of the second base station scheduled for an upcoming transmission. In some implementations, the means includes a wireless device, such as a UE. In some implementations, the means may include at least one processor and a memory coupled to the processor. The processor may be configured to perform the operations described herein with respect to the wireless device. In some other implementations, the means may include a non-transitory computer-readable medium having program code recorded thereon, and the program code may be executed by a computer to cause the computer to perform the operations described herein with reference to the wireless device. In some implementations, the means may include one or more units configured to perform the operations described herein.

[0112] In a first aspect, the one or more interfering beams correspond to interference that meets an interference threshold.

[0113] In a second aspect, alone or in combination with the first aspect, detecting the one or more interfering beams includes: at the means, fixing receiver spatial quasi-co-location (QCL) to the first base station; and measuring interference reference signal received power (RSRP).

[0114] In a third aspect, in combination with the second aspect, measuring the RSRP based on an interference synchronization signal block (SSB) beam.

[0115] In a fourth aspect, in combination with the second aspect, measuring the RSRP based on channel state information reference signal (CSI-RS).

[0116] In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, detecting the one or more interfering beams includes: at the means, scanning receiver spatial quasi-co-location (QCL) across a plurality of receive beams; and measuring the reference signal received power (RSRP) for each of the plurality of receive beams.

[0117] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the one or more interfering beams are the strongest beams of the strongest cell, and the strongest cell corresponds to the second base station.

[0118] In a seventh aspect, in combination with the sixth aspect, the apparatus determines the maximum reference signal received power (RSRP) on all beams of each cell to determine the strongest cell.

[0119] In an eighth aspect, in combination with the sixth aspect, the apparatus determines the average reference signal received power (RSRP) on the strongest beam to determine the strongest cell.

[0120] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the interference identification message includes: physical cell identity (PCI) information corresponding to the one or more interfering beams and synchronization signal block (SSB) beam identifiers corresponding to the one or more interfering beams, other transmission configuration indication (TCI) state references corresponding to the one or more interfering beams, or both.

[0121] In a tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the scheduling of the set of beams at the second base station is independent of the interference identification message.

[0122] In an eleventh aspect, either alone or in combination with one or more of the first to tenth aspects, the scheduling message includes a list of the set of beams scheduled for transmission.

[0123] In a twelfth aspect, either alone or in combination with one or more of the first to eleventh aspects, the scheduling message includes a bitmap, and each value of the bitmap corresponds to a different beam in the set of beams.

[0124] In a thirteenth aspect, either alone or in combination with one or more of the first to twelfth aspects, the interference identification message includes multiple sets of beams corresponding to different requests from the UE.

[0125] In a fourteenth aspect, in combination with the thirteenth aspect, the multiple sets of beams include a first set of beams corresponding to unconstrained transmission parameters, a second set of beams corresponding to partially constrained transmission parameters, a third set of beams corresponding to constrained beams, or a combination thereof.

[0126] In a fifteenth aspect, in combination with the fourteenth aspect, the partially constrained transmission parameters include rank, transmission power, precoding, or a combination thereof.

[0127] In a sixteenth aspect, in combination with one or more of the fourteenth to fifteenth aspects, the constrained beam corresponds to an interference level that meets a threshold at the UE.

[0128] In a seventeenth aspect, in combination with one or more of the fourteenth to sixteenth aspects, the scheduling message indicates scheduling at the second base station considering one or more of the different requests from the UE.

[0129] In some aspects, a device (such as a wireless communication device) configured for wireless communication is configured to receive, at a first base station, from a UE an interference identification message for indicating one or more interference beams detected by the UE. The one or more interference beams are generated by a second base station, which is an adjacent base station of the first base station. The device is further configured to send the interference identification message to the second base station via backhaul communication. In some implementations, the device includes a wireless device, such as a base station. In some implementations, the device may include at least one processor and a memory coupled to the processor. The processor may be configured to perform the operations described herein with respect to the wireless device. In some other implementations, the device may include a non-transitory computer-readable medium having program code recorded thereon, and the program code may be executed by a computer to cause the computer to perform the operations described herein with reference to the wireless device. In some implementations, the device may include one or more units configured to perform the operations described herein.

[0130] In an eighteenth aspect, the device receives, via a second backhaul communication, from the second base station a scheduling message that indicates a set of beams of the second base station scheduled for an upcoming transmission, and sends the scheduling message to the UE.

[0131] In a nineteenth aspect, either alone or in combination with the eighteenth aspect, the device sends the interference identification message to one or more additional base stations via one or more additional backhaul communications. The interference identification message indicates the beams corresponding to each of the one or more additional base stations.

[0132] In a twentieth aspect, in combination with the nineteenth aspect, the device receives, via one or more second additional backhaul communications, from the one or more additional base stations one or more additional scheduling messages that indicate one or more beam sets of the one or more additional base stations scheduled for an upcoming transmission.

[0133] In a twenty - first aspect, in combination with one or more of the nineteenth to twentieth aspects, the apparatus sends the one or more additional scheduling messages to the UE.

[0134] In a twenty - second aspect, either alone or in combination with one or more of the eighteenth to twenty - first aspects, the interference identification message includes: physical cell identity (PCI) information corresponding to the one or more interference beams and synchronization signal block (SSB) beam identifiers corresponding to the one or more interference beams, other transmission configuration indication (TCI) state references corresponding to the one or more interference beams, or both.

[0135] In some aspects, a device (such as a wireless communication device) configured for wireless communication is configured to receive, at a second base station via backhaul communication from a first base station, an interference identification message for indicating one or more interference beams detected by a UE. The one or more interference beams are generated by the second base station. The second base station is an adjacent base station of the first base station. The device is further configured to generate a scheduling message that indicates a set of beams of the second base station that are scheduled for an upcoming transmission. The device is further configured to send the scheduling message to the first base station via a second backhaul communication. In some implementations, the device includes a wireless device, such as a base station. In some implementations, the device may include at least one processor and a memory coupled to the processor. The processor may be configured to perform the operations described herein with respect to the wireless device. In some other implementations, the device may include a non - transitory computer - readable medium having program code recorded thereon, and the program code may be executed by a computer to cause the computer to perform the operations described herein with reference to the wireless device. In some implementations, the device may include one or more units configured to perform the operations described herein.

[0136] In a twenty - third aspect, the interference identification message includes: physical cell identity (PCI) information corresponding to the one or more interference beams and synchronization signal block (SSB) beam identifiers corresponding to the one or more interference beams, other transmission configuration indication (TCI) state references corresponding to the one or more interference beams, or both.

[0137] In a twenty - fourth aspect, either alone or in combination with the twenty - third aspect, the scheduling of the set of beams is independent of the interference identification message.

[0138] In a twenty-fifth aspect, alone or in combination with one or more of aspects twenty-three to twenty-four, the scheduling message includes a list or bitmap of the set of beams scheduled for transmission, and wherein each value of the bitmap corresponds to a different beam in the set of beams.

[0139] In a twenty-sixth aspect, alone or in combination with one or more of aspects twenty-three to twenty-five, during one or more unconstrained time slots indicated by the interference identification message, the apparatus schedules at least one interference beam among the one or more interference beams for transmission.

[0140] In a twenty-seventh aspect, alone or in combination with one or more of aspects twenty-three to twenty-six, during one or more partially constrained time slots indicated by the interference identification message, the apparatus schedules at least one interference beam among the one or more interference beams for transmission with constrained parameters. The constrained parameters include reduced rank, limited transmission power, constrained precoding, or a combination thereof.

[0141] In a twenty-eighth aspect, alone or in combination with one or more of aspects twenty-three to twenty-seven, during one or more constrained time slots indicated by the interference identification message, scheduling any of the one or more interference beams for transmission is avoided.

[0142] Those skilled in the art will understand that information and signals can be represented using any of a variety of different technologies and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0143] The functional blocks and modules described herein (e.g., Figures 1 - 4 and Figures 8 - 10 the functional blocks and modules therein) can include a processor, an electronic device, a hardware device, an electronic component, a logic circuit, a memory, software code, firmware code, etc., or any combination thereof. Additionally, the features related to 1-4 and 8-10 discussed herein can be implemented via dedicated processor circuitry, via executable instructions, and / or a combination thereof.

[0144] Those skilled in the art should further appreciate that the various exemplary logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein (e.g., Figures 5 - 7The logical blocks (in the figures) can all be implemented as electronic hardware, computer software, or a combination of both. To clearly show this interchangeability between hardware and software, the above-described various exemplary components, blocks, modules, circuits, and steps have been generally described in terms of their functions. Whether such a function is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. A person skilled in the art can implement the described functions in a flexible manner for each specific application. However, such implementation decisions should not be construed as departing from the scope of the present disclosure. It will be readily apparent to a person skilled in the art that the order or combination of the components, methods, or interactions described herein is merely exemplary, and the components, methods, or interactions of various aspects of the present disclosure can be combined or performed in a manner different from those shown and described herein.

[0145] A general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any combination thereof, can be used to implement or perform the various exemplary logical blocks, modules, and circuits described in connection with the present disclosure herein. The general-purpose processor can be a microprocessor, but in an alternative, the processor can also be any conventional processor, controller, microcontroller, or state machine. The processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, several microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such architecture.

[0146] The steps of the methods or algorithms described in connection with the present disclosure herein can be directly embodied as hardware, software modules executed by a processor, or a combination of both. The software modules can be located in a RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable hard disk, a CD-ROM, or any other form of storage medium known in the art. The exemplary storage medium can be coupled to the processor such that the processor can read information from, and write information to, the storage medium. Alternatively, the storage medium can also be a part of the processor. The processor and the storage medium can be located in an ASIC. The ASIC can be located in a user terminal. In an alternative, the processor and the storage medium can also exist as discrete components in the user terminal.

[0147] In one or more exemplary designs, the functions described herein can be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions can be stored on a computer-readable medium or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A computer-readable storage media may be any available media that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a general purpose or special purpose computer, or a general purpose or special purpose processor. Additionally, a connection may be appropriately termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, or digital subscriber line (DSL), then the coaxial cable, fiber optic cable, twisted pair, or DSL is included in the definition of the medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0148] As used herein (including in the claims), when the term "and / or" is used in a list of two or more items, it means any one of the listed items, or any combination of two or more of the listed items. For example, if a composition is described as including components A, B, and / or C, the composition can include only A; only B; only C; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C. Additionally, as used herein (including in the claims), the "or" in a list item that ends with "at least one of" indicates a disjunctive list such that, for example, the list "at least one of A, B, or C" means: A or B or C or AB or AC or BC or ABC (i.e., A and B and C), or any one of any combination thereof.

[0149] To enable any person skilled in the art to implement or use the present disclosure, the above description is centered around the present disclosure. It is apparent to those skilled in the art that various modifications to the present disclosure will occur, and the general principles defined herein may also be applicable to other variations without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is consistent with the broadest range of principles and novel features disclosed herein.

Claims

1. A method for wireless communication, the method comprising: at a user equipment (UE) located within a first serving cell served by a first network node, detecting one or more interference beams generated by a second network node, wherein the second network node is an adjacent network node of the first network node and the second network node is configured to serve a second serving cell adjacent to the first serving cell; sending, from the UE to the first network node, an interference identification message indicating the one or more interference beams, wherein transmission of the interference identification message to the first network node causes transmission of the interference identification message from the first network node to the second network node, wherein the interference identification message includes multiple sets of beams corresponding to different requests from the UE, and wherein the multiple sets of beams include a first set of beams corresponding to unconstrained transmission parameters, a second set of beams corresponding to partially constrained transmission parameters, a third set of beams corresponding to constrained beams, or a combination thereof; and receiving, from the first network node, a scheduling message, the scheduling message indicating a beam set of the second network node scheduled for an upcoming transmission to one or more UEs within the second serving cell, the scheduling message received by the first network node being in response to transmission of the interference identification message to the second network node.

2. The method according to claim 1, wherein The one or more interference beams correspond to interference that meets an interference threshold.

3. The method according to claim 1, wherein, Detecting the one or more interference beams includes: at the UE, fixing a receiver spatial quasi co-location (QCL) to the first network node; and measuring interference reference signal received power (RSRP).

4. The method according to claim 3, wherein, Measuring the RSRP based on an interference synchronization signal block (SSB) beam.

5. The method according to claim 3, wherein Measuring the RSRP based on a channel state information reference signal (CSI-RS).

6. The method according to claim 1, wherein Detecting the one or more interference beams includes: at the UE, scanning receiver spatial quasi co-location (QCL) across multiple receive beams; and measuring the reference signal received power (RSRP) for each of the multiple receive beams.

7. The method according to claim 1, wherein The one or more interference beams are the strongest beams of the strongest cell, and the strongest cell corresponds to the second network node.

8. The method according to claim 7 further comprises: Determining the maximum reference signal received power (RSRP) across all beams per cell to determine the strongest cell.

9. The method according to claim 7, further comprising: Determining the average reference signal received power (RSRP) on the strongest beam to determine the strongest cell.

10. The method according to claim 1, wherein, For each of the one or more interference beams, the interference identification message includes: physical cell identity (PCI) information corresponding to the interference beam and a synchronization signal block (SSB) beam identifier corresponding to the interference beam.

11. The method according to claim 1, further comprising: at the UE, performing one or more operations to resolve interference caused by the beam set indicated in the scheduling message.

12. An apparatus configured for wireless communication, the apparatus comprising: at least one processor; and A memory coupled to the at least one processor wherein the at least one processor is configured to perform the following operations: At a user equipment (UE) located within a first serving cell served by a first network node, detect one or more interference beams generated by a second network node, wherein the second network node is an adjacent network node of the first network node and the second network node is configured to serve a second serving cell adjacent to the first serving cell; Initiate, from the UE to the first network node, transmission of an interference identification message for indicating the one or more interference beams, wherein transmission of the interference identification message to the first network node causes transmission of the interference identification message from the first network node to the second network node, wherein the interference identification message includes multiple sets of beams corresponding to different requests from the UE, and wherein the multiple sets of beams include a first set of beams corresponding to unconstrained transmission parameters, a second set of beams corresponding to partially constrained transmission parameters, a third set of beams corresponding to constrained beams, or a combination thereof; and Receive a scheduling message from the first network node, the scheduling message indicating a set of beams of the second network node that are scheduled for an upcoming transmission to one or more UEs within the second serving cell, the scheduling message received by the first network node being in response to transmission of the interference identification message to the second network node.

13. The apparatus according to claim 12, wherein Schedule the set of beams at the second network node independently of any requests included in the interference identification message.

14. The apparatus according to claim 12, wherein, The scheduling message includes a list of the set of beams that are scheduled for transmission to the one or more UEs within the second serving cell.

15. The device according to claim 12, wherein The scheduling message includes a bitmap, and wherein each value of the bitmap corresponds to a different beam in the set of beams.

16. The device according to claim 12, wherein, The partially constrained transmission parameters include rank, transmission power, precoding, or a combination thereof.

17. The apparatus according to claim 12, wherein, The constrained beam corresponds to an interference level that meets a threshold at the UE.

18. The apparatus according to claim 12, wherein, The scheduling message indicates scheduling at the second network node that takes into account one or more of the different requests from the UE.

19. The apparatus according to claim 12, wherein, The at least one processor is further configured to: Perform one or more operations at the UE to resolve interference caused by the set of beams indicated in the scheduling message.

20. A method of wireless communication, the method comprising: At a first network node, receive from a user equipment (UE) located within a first serving cell served by the first network node, an interference identification message for indicating one or more interference beams detected by the UE, the one or more interference beams being generated by a second network node, the second network node being an adjacent network node of the first network node and serving a second serving cell adjacent to the first serving cell; Sending the interference identification message from the first network node to the second network node via backhaul communication, where the interference identification message includes multiple sets of beams corresponding to different requests from the UE, and where the multiple sets of beams include a first set of beams corresponding to unconstrained transmission parameters, a second set of beams corresponding to partially constrained transmission parameters, a third set of beams corresponding to constrained beams, or a combination thereof; and In response to the transmission of the interference identification message to the second network node, receiving, at the first network node via a second backhaul communication, a scheduling message from the second network node, the scheduling message indicating a set of beams of the second network node scheduled for an upcoming transmission to one or more UEs within a second serving cell.

21. The method according to claim 20, further comprising: Sending the scheduling message from the first network node to the UE.

22. The method according to claim 20, further comprising: Sending the interference identification message from the first network node to one or more additional network nodes via one or more additional backhaul communications, where the interference identification message indicates beams corresponding to each of the one or more additional network nodes; Receiving, at the first network node via one or more second additional backhaul communications, one or more additional scheduling messages from the one or more additional network nodes, the one or more additional scheduling messages indicating one or more sets of beams of the one or more additional network nodes scheduled for an upcoming transmission to UEs within one or more serving cells served by the one or more additional network nodes; and Sending the one or more additional scheduling messages from the first network node to the UE.

23. The method according to claim 20, wherein, For each interference beam among the one or more interference beams, the interference identification message includes: a transmission configuration indication (TCI) state corresponding to the interference beam.

24. A method of wireless communication, the method comprising: Receiving, at a second network node via backhaul communication, from a first network node, an interference identification message for indicating one or more interference beams detected by a user equipment (UE) located within a first serving cell served by the first network node, the one or more interference beams being generated by the second network node, where the second network node is an adjacent network node of the first network node and serves a second serving cell adjacent to the first serving cell, where the interference identification message includes multiple sets of beams corresponding to different requests from the UE, and where the multiple sets of beams include a first set of beams corresponding to unconstrained transmission parameters, a second set of beams corresponding to partially constrained transmission parameters, a third set of beams corresponding to constrained beams, or a combination thereof; In response to receiving the interference identification message from the first network node, a scheduling message is generated at the second network node, the scheduling message indicating a beam set of the second network node scheduled for an upcoming transmission to one or more UEs within the second serving cell; and The scheduling message is sent from the second network node to the first network node via a second backhaul communication.

25. The method according to claim 24, wherein For each of the one or more interfering beams, the interference identification message includes: physical cell identity (PCI) information corresponding to the interfering beam and a synchronization signal block (SSB) beam identifier corresponding to the interfering beam, a transmission configuration indication (TCI) state corresponding to the interfering beam, or both.

26. The method according to claim 24, wherein, The scheduling of the beam set is independent of the interference identification message.

27. The method according to claim 24, wherein, The scheduling message includes a list of the beam sets scheduled for transmission to the one or more UEs within the second serving cell.

28. The method according to claim 24, further comprising: During one or more unconstrained time slots indicated by the interference identification message, at least one of the one or more interfering beams is scheduled for transmission.

29. The method according to claim 24, further comprising: During one or more partially constrained time slots indicated by the interference identification message, at least one of the one or more interfering beams is scheduled for transmission with constrained parameters, where the constrained parameters include reduced rank, limited transmission power, constrained precoding, or a combination thereof.

30. The method according to claim 24 further comprises: During one or more constrained time slots indicated by the interference identification message, any of the one or more interfering beams is avoided from being scheduled for transmission.

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