Air Interference Coordination

Abstract

Methods, systems, and apparatus for wireless communications are described. A user equipment (UE) in communication with a serving base station may identify that the UE is a potential victim of interference from a neighboring base station. The UE may send an interference coordination message to the neighboring base station. The interference coordination message may request modification of one or more transmission parameters at the neighboring base station. The neighboring base station may modify its transmission parameters to reduce interference with the UE, and the UE may communicate with the serving base station after sending the interference coordination message.

Description

[0001] Cross-references

[0002] This patent application claims the benefits of the following applications: U.S. Provisional Patent Application No. 62 / 856,143, filed by Park et al. on June 2, 2019, entitled “Over-the-Air Interference Coordination”; and U.S. Patent Application No. 16 / 855,866, filed by Park et al. on April 22, 2020, entitled “Over-the-Air Interference Coordination”; each of the above applications is assigned to the assignee of this application. Technical Field

[0003] The following relates generally to wireless communications and, more particularly, to over-the-air interference coordination. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasting, etc. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (such as long term evolution (LTE) systems, improved LTE (LTE-A) systems, or LTE-A professional systems) and fifth generation (5G) systems (which may be referred to as new radio (NR) systems). These systems may use techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include multiple base stations or network access nodes, each of which simultaneously supports communication for multiple communication devices (which may be further referred to as user equipment (UE)).

[0005] The base station and the UE may communicate using beamforming techniques. For example, the base station may use a transmit beam to communicate with a UE using a receive beam. However, in some cases, a transmit beam from a non-serving base station may interfere with a transmit beam of a serving base station that is communicating with the UE, which may result in inefficient decoding or increased use of system resources (e.g., due to retransmissions) and other problems. Summary of the invention

[0006] The described technology relates to improved methods, systems, devices and apparatuses that support air interference coordination. In general, the described technology provides for solving (e.g., minimizing, reducing or eliminating) interference by utilizing air coordination signaling communications. A user equipment (UE) supported by a serving base station may experience interference from a neighboring base station. In such a case, the UE may send an air message to indicate to the neighboring base station that the UE is experiencing interference and may request the neighboring base station to change its communication parameters. In response to the request, the neighboring base station may change one or more communication parameters (such as beam parameters) to reduce interference at the UE. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figures 1 to 3 An example of a wireless communication system supporting over-the-air interference coordination in accordance with aspects of the present disclosure is shown.

[0008] Figure 4 A set of example frame structures supporting over-the-air interference coordination in accordance with aspects of the present disclosure are shown.

[0009] Figure 5 An example of a process flow to support over-the-air interference coordination in accordance with aspects of the present disclosure is shown.

[0010] Figure 6 An example of an architecture supporting over-the-air interference coordination in accordance with aspects of the present disclosure is shown.

[0011] Figure 7 and Figure 8 A block diagram of a device supporting over-the-air interference coordination in accordance with aspects of the present disclosure is shown.

[0012] Fig. 9 A block diagram of an interference manager supporting over-the-air interference coordination is shown in accordance with aspects of the present disclosure.

[0013] Fig.10 A schematic diagram of a system including devices supporting over-the-air interference coordination in accordance with aspects of the present disclosure is shown.

[0014] Fig.11 and Fig.12 A block diagram of a device supporting over-the-air interference coordination in accordance with aspects of the present disclosure is shown.

[0015] Fig.13 A block diagram of an interference manager supporting over-the-air interference coordination is shown in accordance with aspects of the present disclosure.

[0016] Fig.14 A schematic diagram of a system including devices supporting over-the-air interference coordination in accordance with aspects of the present disclosure is shown.

[0017] Figures 15 to 25A flow chart illustrating a method of supporting over-the-air interference coordination in accordance with aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0018] Interference coordination signaling for communication between a user equipment (UE) and a base station can be static, semi-static, or dynamic. In static coordination, information about interference is not exchanged between the base station and the UE, and interference coordination is pre-configured. This may result in an inflexible interference resolution process. In semi-static coordination, the base station may utilize a non-ideal backhaul to exchange information. This non-ideal backhaul may be high latency and distributed scheduling may be utilized. In dynamic coordination, the base station may utilize an ideal backhaul for communication and a centralized scheduler to coordinate scheduling. The ideal backhaul may have low latency, but may not be available.

[0019] To address issues regarding interference coordination, the base station and UE may transmit information regarding interference coordination over the air. The UE may experience interference from a neighboring base station that is not its serving base station. The UE may send an over-the-air message to indicate to the neighboring base station that the UE is experiencing interference and may request the neighboring base station to change the beam or synchronization signal block (SSB) it uses for communication. The interfering base station may then change the beam direction to avoid interfering with the transmission at the UE.

[0020] In some cases, the serving base station may receive a report from the UE indicating that the neighboring base station is a potential interfering base station or that the UE is a potential victim of interference from the neighboring base station. The serving base station may determine whether the neighboring base station is a potential interfering base station based on the report, and may send a backhaul message to the neighboring base station to indicate the potential interference. The potential interference may include information that may cause or may be related to the potential interference at the UE, such as transmit beams, transmission configuration indicator (TCI) status, UE receive beams, SSBs, etc.

[0021] Certain aspects of the subject matter described herein may be implemented to achieve one or more advantages. The described techniques may support improvements in interference management, spectrum efficiency, and latency, among other advantages. Thus, the supported techniques may include improved network operation, and in some examples, may increase network efficiency, among other benefits.

[0022] Various aspects of the present disclosure are first described in the context of a wireless communication system. Then, various aspects are described with respect to a set of frame structures, process flows, and architectures. Various aspects of the present disclosure are further illustrated by and with reference to apparatus diagrams, system diagrams, and flow diagrams relating to processing of transport block level parity bits for interrupted transmissions.

[0023] Figure 1An example of a wireless communication system 100 supporting over-the-air interference coordination according to aspects of the present disclosure is shown. The wireless communication system 100 may include a base station 105, a UE 115, and a core network 130. In some examples, the wireless communication system 100 may be a long term evolution (LTE) network, an improved LTE (LTE-A) network, an LTE-A professional network, or a new radio (NR) network. In some cases, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low-latency communications, communications with low-cost and low-complexity devices, or any combination thereof.

[0024] Base stations 105 may be dispersed throughout a geographic area to form wireless communication system 100, and may be devices of different forms or capabilities. Base stations 105 and UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which UEs 115 and base stations 105 may establish communication links 125. Coverage areas 110 may be examples of geographic areas over which base stations 105 and UEs 115 support transmission of signals according to one or more radio access technologies.

[0025] UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary, or mobile, or both stationary and mobile at different times. UEs 115 may be devices of different forms or with different capabilities. Figure 1 Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein can communicate with various types of devices, such as other UEs 115, base stations 105, or network devices (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network devices), such as Figure 1 shown.

[0026] The base stations 105 may communicate with the core network 130, or communicate with each other, or perform both operations. For example, the base stations 105 may interface with the core network 130 via a backhaul link 120 (e.g., via S1, N2, N3 or other interfaces). The base stations 105 may communicate with each other directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130) via the backhaul link 120 (e.g., via X2, Xn or other interfaces), or perform both operations. In some examples, the backhaul link 120 may be or include one or more wireless links.

[0027] One or more of the base stations 105 described herein may include or may be referred to by those skilled in the art as a base station transceiver, a radio base station, an access point, a radio transceiver, a Node B, an evolved Node B (eNB), a next generation Node B, or a Gigabit Node B (any of which may be referred to as a gNB), a Home Node B, a Home Evolved Node B, or some other appropriate terminology.

[0028] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other appropriate terminology, where a "device" may also be referred to as a unit, a station, a terminal, or a client, among other examples. UE 115 may also include or may be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, a machine type communication (MTC) device, etc., which may be implemented in various items such as appliances, vehicles, meters, etc.

[0029] The UE 115 described herein may be able to communicate with various types of devices, such as other UEs 115, which may sometimes act as relays, as well as base stations 105 and network devices, including macro eNBs or gNBs, small cell eNBs or gNBs, relay base stations, etc., as described in Figure 1 as shown in .

[0030] The UE 115 and the base station 105 may communicate wirelessly with each other via one or more communication links 125 on one or more carriers. The term "carrier" may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth portion (BWP)) that operates according to a physical layer channel for a given radio access technology (e.g., LTE, LTE-A, LTE-A professional, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating operations for the carrier, user data, or other signaling. The wireless communication system 100 may support communication with the UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, the UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used with both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers.

[0031] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition signaling or control signaling that coordinates operations for other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be placed according to a channel grid to be discovered by a UE 115. A carrier may operate in a standalone mode, where initial acquisition and connection may be performed by a UE 115 via the carrier, or a carrier may operate in a non-standalone mode, where a connection is anchored using a different carrier (e.g., of the same or different radio access technology).

[0032] The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode) or may be configured to carry both downlink and uplink communications (e.g., in TDD mode).

[0033] A carrier may be associated with a particular bandwidth of a radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as a "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a plurality of predetermined bandwidths for a carrier of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). Devices of the wireless communication system 100 (e.g., a base station 105, a UE 115, or both) may have a hardware configuration that supports communication on a particular carrier bandwidth, or may be configurable to support communication on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or a UE 115 that supports simultaneous communication via carriers associated with a plurality of carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., a subband, a BWP) or all of a carrier bandwidth.

[0034] The signal waveform transmitted on the carrier may be composed of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may include a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, wherein the symbol period and the subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Therefore, the more resource elements received by UE 115 and the higher the order of the modulation scheme, the higher the data rate for UE 115 can be. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further increase the data rate or data integrity for communication with UE 115.

[0035] The time interval for the base station 105 or the UE 115 may be expressed in multiples of a basic time unit, which may be referred to as T s =1 / (Δf max ·N f ) seconds sampling period, where Δf max It can represent the maximum supported subcarrier spacing, and N f The maximum supported discrete Fourier transform (DFT) size may be indicated. The time intervals of the communication resources may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0036] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some cases, a frame may be divided into subframes, and each subframe may be further divided into multiple time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include multiple symbol periods (e.g., depending on the length of a cyclic prefix added in front of each symbol period). In some wireless communication systems 100, a time slot may be further divided into multiple mini-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0037] A subframe, a time slot, a mini-time slot, or a symbol may be the smallest scheduling unit of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some cases, the TTI duration (i.e., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in the form of a burst of shortened TTIs (sTTIs)).

[0038] Physical channels may be multiplexed on a carrier according to various techniques. For example, a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique may be used to multiplex physical control channels and physical data channels on a downlink carrier. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by the number of symbol periods and may extend across a system bandwidth or a subset of a system bandwidth of a carrier. One or more control regions (e.g., CORESETs) may be configured for a set of UEs 115. For example, a UE 115 may monitor or search a control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates at one or more aggregation levels arranged in a cascaded manner. The aggregation level for a control channel candidate may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with a coding information for a control information format having a given payload size. A search space set may include a common search space set configured for sending control information to multiple UEs 115 and a UE-specific search space set for sending control information to a specific UE 115.

[0039] Each base station 105 can provide communication coverage via one or more cells (e.g., macro cells, small cells, hot spots or other types of cells, or various combinations thereof). The term "cell" can refer to a logical communication entity used to communicate with the base station 105 (e.g., on a carrier), and can be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID) or other identifier) ​​for distinguishing adjacent cells. In some examples, a cell can also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) on which a logical communication entity operates. Depending on various factors (such as the capabilities of the base station 105), the range of such a cell can range from a smaller area (e.g., a structure, a subset of a structure) to a larger area. For example, a cell can be or include a building, a subset of a building, an external space between or overlapping geographic coverage areas 110, and the like.

[0040] A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 115 with a service subscription to a network provider that supports the macro cell. A small cell may be associated with a lower power base station 105 than a macro cell, and the small cell may operate in the same or different (e.g., licensed, unlicensed) frequency band as the macro cell. A small cell may provide unrestricted access to a UE 115 with a service subscription to a network provider, or may provide restricted access to a UE 115 associated with a small cell (e.g., a UE 115 in a closed subscriber group (CSG), a UE 115 associated with a user in a residence or office, etc.). A base station 105 may support one or more cells, and may also support the use of one or more component carriers to communicate on one or more cells.

[0041] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB), or other protocol types) that may provide access to different types of devices.

[0042] In some examples, base stations 105 may be mobile and, therefore, provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of base stations 105 provide coverage for respective geographic coverage areas 110 using the same or different radio access technologies.

[0043] Some UEs 115 (e.g., MTC or IoT devices) may be low-cost or low-complexity devices and may provide automated communications between machines (e.g., via machine-to-machine (M2M) communications). M2M communications or MTC may refer to data communications technology that allows devices to communicate with each other or with a base station 105 without human intervention. In some examples, M2M communications or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application that utilizes the information or presents the information to a human interacting with the application. Some UEs 115 may be designed to collect information or implement automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, climate and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based service billing.

[0044] Some UEs 115 may be configured to employ an operating mode that reduces power consumption, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception rather than simultaneous transmission and reception). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power saving techniques for UE 115 include entering a power-saving deep sleep mode when not participating in active communications, operating on a limited bandwidth (e.g., according to narrowband communications), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type that is associated with a predefined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of a carrier, or outside a carrier.

[0045] The wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, the wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE115 can be designed to support ultra-reliable, low-latency or critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private communication or group communication, and can be supported by one or more mission-critical services (such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData)). Support for mission-critical functions can include prioritization of services, and mission-critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency can be used interchangeably in this article.

[0046] In some cases, UE 115 may also be able to communicate directly with other UE 115 via a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication may be within a geographic coverage area 110 of a base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of a base station 105, or may otherwise be unable to receive transmissions from a base station 105. In some cases, groups of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system, wherein each UE 115 transmits to each other UE 115 in the group. In some examples, a base station 105 facilitates scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115 without involving a base station 105.

[0047] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connection, and other access, routing or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function unit (AMF)) for managing access and mobility and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), a user plane function unit (UPF)) for routing packets to an external network or interconnecting to an external network. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UE 115 served by a base station 105 associated with the core network 130. User IP packets may be transmitted through a user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to the IP service 150 of the network operator. Operator IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0048] Some of the network devices, such as the base station 105, may include subcomponents such as an access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with the UE 115 through multiple other access network transport entities 145, which may be referred to as radio heads, smart radio heads, or transmit / receive points (TRPs). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or merged into a single network device (e.g., base station 105).

[0049] The wireless communication system 100 may operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Typically, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, but the waves may be sufficient for macro cells to penetrate buildings to provide service to UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) than transmission using smaller frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0050] The wireless communication system 100 may also operate in a super high frequency (SHF) region using a frequency band from 3 GHz to 30 GHz (also referred to as a centimeter band) or in an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) (also referred to as a millimeter band). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between the UE 115 and the base station 105, and the EHF antennas of the corresponding devices may be smaller and more closely spaced than the UHF antennas. In some cases, this may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may suffer from even greater atmospheric attenuation and shorter distances than SHF or UHF transmissions. The technology disclosed herein may be employed across transmissions using one or more different frequency regions, and the designated use of frequency bands across these frequency regions may differ according to countries or regulatory agencies.

[0051] The wireless communication system 100 can utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 can employ license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band (such as the 5 GHz industrial, scientific, and medical (ISM) band). When operating in an unlicensed radio frequency spectrum band, devices (such as base stations 105 and UEs 115) can employ carrier sensing for conflict detection and avoidance. In some cases, operations in unlicensed bands can be based on a carrier aggregation configuration (e.g., LAA) in combination with component carriers operating in a licensed band. Operations in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, D2D transmissions, and the like.

[0052] The base station 105 or UE 115 may be equipped with multiple antennas, which may be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels (which may support MIMO operations or transmit or receive beamforming). For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some cases, the antennas or antenna arrays associated with the base station 105 may be located at different geographical locations. The base station 105 may have an antenna array having multiple rows and columns of antenna ports that the base station 105 may use to support beamforming of communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals sent via the antenna ports.

[0053] The base station 105 or UE 115 can use MIMO communication to exploit multipath signal propagation and improve spectral efficiency by sending or receiving multiple signals via different spatial layers. Such a technology may be referred to as spatial multiplexing. For example, multiple signals may be sent by a transmitting device via different antennas or different combinations of antennas. Similarly, multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO technology includes single-user MIMO (SU-MIMO) (where multiple spatial layers are sent to the same receiving device) and multi-user MIMO (MU-MIMO) (where multiple spatial layers are sent to multiple devices).

[0054] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to shape and direct antenna beams (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array so that some signals propagating in a specific orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals transmitted via antenna elements may include the transmitting device or the receiving device applying certain amplitude offsets, phase offsets, or both to signals carried via antenna elements associated with the device. Adjustments associated with each of the antenna elements may be defined by a set of beamforming weights associated with a specific orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other orientation).

[0055] As part of the beamforming operation, the base station 105 or the UE 115 may use beam scanning techniques. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be sent multiple times by the base station 105 in different directions. For example, the base station 105 may send signals based on different sets of beamforming weights associated with different transmission directions. Transmissions in different beam directions may be used (e.g., by a transmitting device (such as the base station 105) or by a receiving device (such as the UE 115)) to identify the beam direction for subsequent transmission or reception by the base station 105.

[0056] Some signals, such as data signals associated with a particular receiving device, may be sent by base station 105 in a single beam direction, e.g., a direction associated with a receiving device, such as UE 115. In some examples, the beam direction associated with transmissions along a single beam direction may be determined based on signals sent in different beam directions. For example, UE 115 may receive one or more of the signals sent by base station 105 in different directions and may report to base station 105 an indication of the signal received by UE 115 having the highest signal quality or otherwise acceptable signal quality.

[0057] In some cases, transmissions by a device (e.g., by a base station 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from the base station 105 to the UE 115). The UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to the number of configured beams across the system bandwidth or one or more subbands. The base station 105 may send reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)) that may or may not be precoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type of codebook, a linear combination type of codebook, a port selection type of codebook). Although these techniques are described with reference to signals sent by base station 105 in one or more directions, UE 115 may employ similar techniques to send signals multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115) or to send signals in a single direction (e.g., to send data to a receiving device).

[0058] When receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from the base station 105, the receiving device (e.g., UE 115) can try multiple reception configurations (e.g., directional listening). For example, the receiving device can receive via different antenna subarrays, by processing the received signal according to different antenna subarrays, by receiving according to different reception beamforming weight sets applied to the signal received at multiple antenna elements of the antenna array (e.g., different directional listening weight sets), or by processing the received signal according to different reception beamforming weight sets applied to the signal received at multiple antenna elements of the antenna array (any of the above operations may be referred to as "listening" according to different reception configurations or reception directions), thereby trying multiple reception directions. In some examples, the receiving device can use a single reception configuration to receive along a single beam direction (e.g., when receiving a data signal). A single receive configuration may be aligned on a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, the highest signal-to-noise ratio (SNR), or otherwise acceptable signal quality based on listening according to multiple beam directions).

[0059] The wireless communication system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication at the bearer or packet data convergence protocol (PDCP) layer may be IP-based. The radio link control (RLC) layer may perform packet segmentation and reassembly to transmit on a logical channel. The medium access control (MAC) layer may perform priority processing and multiplexing of logical channels to transport channels. The MAC layer may also support retransmission at the MAC layer using error detection techniques, error correction techniques, or both to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer may provide the establishment, configuration, and maintenance of an RRC connection between a UE 115 and a base station 105 or a core network 130 to support radio bearers for user plane data. At the physical layer, transport channels may be mapped to physical channels.

[0060] The wireless communication system 100 can implement techniques to improve interference coordination between potential victim UEs and neighboring base stations. Over-the-air interference coordination can reduce latency and improve responsiveness to potential interference in the wireless communication system. Interfering base stations can change transmission parameters to avoid interference in response to over-the-air signaling from UEs and backhaul signaling from other base stations that may serve potential victim UEs.

[0061] Figure 2A and Figure 2B An example of wireless communication systems 201 and 202 supporting over-the-air interference coordination according to aspects of the present disclosure is shown. In some examples, the wireless communication systems 201 and 202 can implement aspects of the wireless communication system 100. UEs 115-a, 115-b, 115-c, and 115-d can communicate with base stations 105-a, 105-b, and 105-c in a beamforming communication system. Base station 105 can send communications on transmit beam 205.

[0062] In a wireless communication system 201, a base station 105 may use over-the-air communications to transmit information about interference coordination. A UE 115-a may be scheduled to communicate with a serving base station 105-a using beamforming communications. The UE 115-a may have a designated receive beam, and the serving base station 105-a may communicate with the UE 115-a using a designated transmit beam 205 (e.g., beam 205-a). Another base station 105-b may communicate with the UE 115-b using transmit beam 205-b. The base station 105-c may communicate with the UE 115-d using transmit beam 205-c. The base station 105 may communicate on beam 205 using certain SSBs in a beamforming system according to a configured TCI state indicating SSB usage and beam configuration.

[0063] UE 115-a may experience interference from a neighboring base station 105-b that is not its serving base station 105-a. This may be due to interference from a transmit beam 205-b used by base station 105-b in its communication with UE 115-b. UE 115-a may send an over-the-air coordination signal 210 to a neighboring base station 105-b to indicate to the neighboring base station 105-b that UE 115-a is experiencing interference, or may be experiencing interference due to a determined SSB configuration of the neighboring base station 105-b, and may request the neighboring base station 105-b to change the beam 205-b or SSB it is using for communication. In some cases, UE 115-a may request the neighboring base station 105-b to change the direction of beam 205-b.

[0064] Figure 2B The wireless communication system 202 is shown after beam switching by a neighboring base station 105-b (as indicated in the wireless communication system 201). The neighboring base station 105-b can then change the direction of the beam 205-b (e.g., use a different transmit beam) to avoid interference with transmissions at the UE 115-a. The base station 105-b can then communicate on the transmit beam 205-b to communicate with the UE 115-c instead of the UE 115-b, which may be the communication that has caused interference to the communication at the UE 115-a. The base station 105-b can transmit a physical downlink shared channel (PDSCH) on the designated SSB, or can determine not to transmit the PDSCH based on the over-the-air coordination signal 210 from the UE 115-a.

[0065] Because the neighboring base station 105-b is no longer interfering with communications at the UE 115-a, the UE 115-a can communicate with its serving base station 105-a with a reduced amount of interference and a higher probability of successfully decoding the transmission. Due to the interference coordination message 210 (e.g., over-the-air coordination signaling), the UE 115-a can receive data in the PDSCH from the base station 105-a via the beam 205-a without interference from the base station 105-b.

[0066] The interference that UE 115 may experience from a neighboring base station 105 may change over time, and both the serving base station 105-a and the UE 115-a may not be able to predict the presence of interference at the PDSCH transmission and reception time. For example, UE 115-a may not initially experience interference from a neighboring base station 105-b. Therefore, UE 115-a may not send an air coordination signal 210 to a neighboring base station 105-b requesting base station 105-b to change beam 205-b. However, at the time of PDSCH transmission / reception, UE 115-a may experience interference from base station 105-b because it did not predict the interference and did not send an air coordination signal 210. In another case, UE 115-a may initially detect a large amount of interference from base station 105-b, and therefore may send an air coordination signal 210, but may experience a lower amount of interference at the time of PDSCH communication. Therefore, the neighboring base station 105-b may switch beams to avoid interference with UE 115-a with a small performance gain.

[0067] To adapt to changing interference levels, the determination to send an over-the-air coordination signal 210 may occur semi-statically. In this case, the serving base station 105-a may determine a potential victim UE 115 when considering possible transmit / receive beam pairs. Whether a UE 115 is a victim UE 115 or a non-victim UE 115 may change over time, depending on the selected receive beam for the UE 115, the transmit beam of the serving base station 105, and the transmit beam of a neighboring base station 105 (e.g., a potential interferer base station 105). The UE 115 may be semi-statically configured by the serving base station 105 as a potential victim UE 115. The UE 115 may then send an over-the-air coordination signal 210 in a particular direction to proactively avoid interference from a neighboring base station 105. The coordination signal 210 may be sent by the UE 115 regardless of whether the interfering base station 105 is currently sending a PDSCH on a beam 205 (e.g., beam 205-b) or has previously sent a PDSCH on beam 205. This process may be an example of semi-static backhaul coordination.

[0068] In some cases, a neighboring base station 105 (e.g., a base station 105 that may cause interference) may not be able to receive the over-the-air coordination signal 210 because the neighboring base station 105 may be using a transmit beam 205 that is different from a corresponding receive beam that the UE 115 may be using. In this case, the UE 115 may initially experience interference and may send an over-the-air coordination message 210 to the neighboring base station 105 to request the neighboring base station 105 to change the beam 205. However, the neighboring base station 105 may not receive the over-the-air coordination signal 210 because the uplink receive beam used by the UE 115 is different from the downlink transmit beam 205. Since the neighboring base station 105 does not receive the over-the-air coordination signal 210, the neighboring base station 105 may not change the beam 205 and may continue to use the downlink transmit beam 205 that is interfering with the UE 115. The UE 115 may then still experience high interference when communicating on the PDSCH.

[0069] In this case, the interfering base station 105 may be configured to use a particular transmit beam 205 for PDSCH. In order to use the configured beam 205, the interfering base station 105 may be configured to monitor the over-the-air coordination signal 210. In some cases, the interfering base station 105 may monitor the over-the-air coordination signal 210 using the same receive beam 205 as the selected transmit beam 205 that the neighboring base station 105 intended to use for PDSCH transmission. In the case where the base station 105 has been identified as a potential interferer base station 105, and when the configured transmit beam 205 is configured as a potential interfering beam 205 from the perspective of the serving base station 105, the interfering base station 105 may monitor the over-the-air coordination signal 210. This process may be part of dynamic over-the-air coordination with directional beams.

[0070] Figure 3 An example of a wireless communication system 300 supporting over-the-air interference coordination according to aspects of the present disclosure is shown. In some examples, the wireless communication system 300 can implement aspects of the wireless communication systems 100, 201, or 202. The UE 115-e can communicate with the serving base station 105-d using a transmit / receive beam 310, and the base station 105-d can communicate with the UE 115-e using a transmit / receive beam 305, which can be reflected on the cluster 320. In the case where the transmit beam 315 is used for transmission and the serving base station 105-d can communicate with the interfering base stations 105-e and 105-f using a backhaul link 325, the base stations 105-e and 105-f may cause interference with the UE 115-e. The UE 115-e can communicate with the potentially interfering base stations 105-e and 105-f using over-the-air coordination signaling 330.

[0071] The serving base station 105-d may communicate with the UE 115-e via various transmit beams 305. The base station 105-d may communicate directly with the UE 115-e using beam 305-a, and may communicate indirectly with the UE 115-e using beams 305-b and 305-c, which may be reflected as beams 305-d and 305-e, respectively, across a cluster (e.g., cluster 320-a and cluster 320-b). The UE 115-e may receive transmissions from the serving base station 105-d using receive beam 310. For example, the UE 115-e may receive transmissions of an SSB corresponding to the transmit beam 305-a on the receive beam 310-a. The UE 115-e may also receive transmissions of an SSB corresponding to the transmit beam 305-b and the reflected transmit beam 305-d using the receive beam 310-c. UE 115-e may also be configured to receive transmissions from transmit beam 305-c and reflected transmit beam 305-e using receive beam 310-b. Each beam pair used by serving base station 105-d and UE 115-e may correspond to an SSB index or TCI state. For example, transmit beam 305-b may correspond to SSB #0 and TCI state #0, transmit beam 305-a may correspond to SSB #1 and TCI state #1, and transmit beam 305-c may correspond to SSB #2 and TCI state #2, and so on.

[0072] In some aspects, neighboring base station 105-e may be a potentially interfering base station. For example, base station 105-e may communicate on beam 315-a, which may interfere with communications at UE 115-e. For example, transmit beam 315-a at base station 105-e may correspond to SSB #9. Neighboring base station 105-f may also be a potentially interfering base station. Base station 105-f may communicate on transmit beam 315-b. For example, transmit beam 315-b may correspond to SSB #5.

[0073] To determine potential interference, the UE 115-e may first determine whether it is a potential victim UE 115 by monitoring neighboring base stations (e.g., base stations 105-e and 105-f). Whether the UE 115-e is a potential victim UE may depend on which transmit / receive beams 305 are used by the serving base station 105-d and the interfering base station (base station 105-e or base station 105-f). The UE 115-e may determine strong potential interference based on the selected SSB (or TCI state) that the serving base station 105-d is configured to use, which in turn may be used to determine which beam 310 and SSB the UE 115-e uses to communicate with the serving base station 105-d. The UE 115-e may report the potential interfering base station 105 to the serving base station 105-d via RRC, and may indicate a specific interfering SSB and corresponding transmit beam (e.g., transmit beam 315-a or transmit beam 315-b) or TCI state. The configured receive beam 310 for UE 115-e may also be included in the report to the serving base station.

[0074] For example, the UE report to the serving base station may include information as shown in Table 1 below:

[0075]

[0076] Table 1: Example interference report sent by UE to base station

[0077] In this example, Table 1 reports: If the serving base station 105-d (e.g., the serving cell) is configured to use SSB #0 and TCI state #0 (e.g., using transmit beam 305-b), the UE 115-e may experience interference from base station 2 (e.g., base station 105-e), and the interference will be caused by SSB #9 and TCI state #9 (e.g., transmit beam 315-a) used by base station 105-e. If the base station 105-d is configured to use SSB #1 and TCI state #1 (e.g., using transmit beam 305-a), the UE 115-e may not experience interference from other base stations and other interfering SSBs. If base station 105-d is configured to use SSB#2 and TCI state #2 (e.g., using transmit beam 305-c), UE 115-e may experience interference from base station 1 (e.g., base station 105-f), and the interference may be caused by the use of SSB#2 and TCI state #2 (e.g., transmit beam 315-b) used by base station 105-f.

[0078] Based on receiving such a report from UE 115-e (which includes information describing the contents of Table 1, etc.), base stations 105 may exchange information by using backhaul link 325. For example, serving base station 105-d may send a message to potentially interfering base stations (e.g., base stations 105-e and 105-f) via backhaul link 325. The message may include information describing which SSB (and associated transmit beam 315) the interfering base station 105 may be configured to use that may cause high interference to beam 305 of serving base station 105-d in communications between serving base station 105-d and UE 115-e.

[0079] For example, serving base station 105-d may be configured to communicate with beam 305-b, which may correspond to SSB#0 and TCI state #0. In this case, based on a table contained in an interference report from UE 115-e, serving base station 105-d may determine that base station 105-e and beam 315-a (e.g., SSB#9 and TCI state #9) may cause interference at UE 115-e. In order to prepare for over-the-air coordination signaling to be sent by UE 115-e to potentially interfering base station 105-e, base station 105-d may send a backhaul message to a neighboring base station 105-e on backhaul link 325-a. The backhaul message may indicate that if base station 105-e uses a particular beam (e.g., a beam corresponding to SSB#9 and TCI state #9), base station 105-e may cause interference to UE 115-e.

[0080] In another case, base station 105-d may be configured to use transmit beam 305-c corresponding to SSB #2 and TCI state #2. In this case, base station 105-d may determine that base station 105-f may potentially interfere with communications between serving base station 105-d and UE 115-e. In such a case, serving base station 105-d may prepare for upcoming over-the-air coordination signaling sent by UE 115-e to potentially interfering base station 105-e by sending a backhaul message on backhaul link 325-b. The backhaul message may indicate to base station 105-f that base station 105-f may interfere with UE 115-e if base station 105-f uses SSB #5 and transmits beam 315-b.

[0081] Based on the communication on the backhaul link 325, the potentially interfering base stations 105-e and 105-f can determine whether to monitor the over-the-air coordination signal from the UE 115-e. If certain conditions are met, the neighboring base stations 105-e and 105-f can determine to monitor the over-the-air signaling. For example, a first condition may be that the base station 105-e receives an indication from the serving base station 105-a via the backhaul link 325-a that the neighboring base station 105-e may be a potential source of interference for the serving base station 105-d and the UE 115-e. The second condition may be that the indication on the backhaul link 325-a indicates to the base station 105-e that the interference will be caused by the SSB for which the base station 105-e is configured for data transmission. If these conditions are met (e.g., base station 105-e receives a message from base station 105-d on backhaul link 325-a, and the indication indicates that base station 105-e is using its configured SSB and beam 315-a), then base station 105-e can monitor over-the-air signaling 330-a from UE 115-e. Base station 105-e can monitor over-the-air signaling 330-a using the same beam that base station 105-e is configured to use for downlink transmissions (e.g., transmit beam 315-a and SSB #9).

[0082] Alternatively, serving base station 105-d may determine that it is configured to use SSB #2 corresponding to beam 305-c, which may indicate, based on Table 1, that if base station 105-f is configured to use SSB #5 (e.g., transmit beam 315-b), transmissions by base station 105-f may interfere with communications at UE 115-e. Base station 105-d may send an indication of the potential interference to base station 105-f. If base station 105-f receives signaling on backhaul link 325-b indicating that the configured beams (e.g., SSB #5 and transmit beam 315-b) will interfere with communications at UE 115-e, base station 105-f may monitor over-the-air signaling 330-b. If these conditions are met, base station 105-f may monitor over-the-air signaling 330-b from UE 115-e using beam 315-b.

[0083] Over-the-air signaling 330-a and 330-b from UE 115-e may indicate to base station 105-e and base station 105-f, respectively, a request to change the SSB# and beam 315 that base station 105 has configured for communication.

[0084] In some cases, the neighboring base stations 105 may be configured to change the beam 315 if they receive over-the-air signaling 330 from the UE 115-e. In this case, the wireless communication system 300 may be configured to prioritize communications between a potential victim UE 115-e and a base station 105-d over communications with a neighboring base station (e.g., an interfering base station 105-e). In this case, if the interfering base station 105-e detects an over-the-air coordination signal 330-a from the UE 115-e, the interfering base station 105-e may not use the beam 315-a to transmit data on the PDSCH, regardless of the data type of the data in the PDSCH.

[0085] In other cases, the data for each PDSCH (of the serving base station 105-d or the neighboring base station 105-e or 105-f) may have different priority levels, and the neighboring base station 105-e may determine whether to cancel the PDSCH on beam 315-a based on the priority level of the data in the PDSCH scheduled for transmission on beam 315-a. The determination as to whether to cancel the transmission may be made by comparing the priority level of the data sent by the UE 115-e and the serving base station 105-d with the priority level of the data sent on beam 315-a. The priority level of the data sent by the potential victim UE 115-e may be dynamically sent to the neighboring base station 105-e via over-the-air signaling 330-a, or may be semi-statically sent to the neighboring base station 105-e using the backhaul link 325-a. The neighboring base station 105-e may receive over-the-air signaling 330-a from the UE 115-e and may also detect a priority level of data in the PDSCH of the serving base station 105-d with which the UE 115-e is communicating. In the event that data scheduled for transmission to and from the UE 115-e is determined to have a higher priority level than data in the PDSCH of the neighboring base station 105-e, the neighboring base station 105-e (e.g., an interfering base station 105-e) may not transmit its PDSCH. If the data in the PDSCH of the neighboring base station 105-e has a higher priority than data corresponding to the UE 115-e, the neighboring base station 105-e may determine to transmit its PDSCH regardless of whether the UE 115-e transmits over-the-air coordination signaling 330-a to the neighboring base station indicating potential interference from the base station 105-e.

[0086] Additionally or alternatively, if the neighboring base station 105-e or 105-f is a potentially interfering base station, the UE 115-e may modify one or more communication parameters for subsequent communications with the serving base station 105-d. For example, the UE 115-e may configure one or more receive beams 310 as narrow beams (e.g., the UE 115-e may modify the beam width (or other beam parameters) of the receive beam 310) to reduce interference received from the potentially interfering base station. In some cases, by using narrower beams to receive communications from the base station 105-d, the UE 115-e may not experience interference from the potentially interfering base station or may experience less interference because the narrower beams may reduce the signal power received from the neighboring base station 105-e or 105-f.

[0087] Figure 4 An example set of frame structures 400 supporting air interference coordination according to aspects of the present disclosure is shown. In some examples, frame structure 400 can implement aspects of wireless communication system 100, 201, 202, or 300. Frame structure 401 shows scheduling of uplink and downlink communications between UE 115 and serving base station 105, which can have a longer configuration gap. Frame structure 402 shows scheduling of uplink and downlink communications between UE 115 and potentially interfering base stations based on air coordination signaling sent by UE 115 in frame structure 401. Frame structure 403 shows scheduling of uplink and downlink communications between UE 115 and serving base station 105. Frame structure 404 shows uplink and resulting communications after air coordination signaling in frame structure 403. As described herein, K0 can be a time gap between a PDCCH (e.g., carrying downlink control information (DCI)) and a corresponding PDSCH. In some cases, K0 may be pre-configured at the UE 115, the serving base station, or both.

[0088] If the serving base station 105 is configured to use a transmit beam to send data to the potential victim UE 115, the serving base station 105 can use dynamic air coordination. The serving base station 105 can send a DCI 405 to the UE 115, and the DCI 405 can indicate the transmit beam, configuration, and TCI state configuration of the serving base station 105. The DCI can also indicate the presence of an air coordination signal and its content, which can include frequency resources, time resources, transmission timing, uplink transmit beam index, or other parameters. The UE 115 can send air coordination signaling to neighboring base stations before the scheduled PDSCH 420.

[0089] As shown in frame 401, UE 115 may receive DCI 405-a in a first downlink timeslot. DCI 405-a may indicate (at 430-a) a scheduling of transmission of over-the-air signaling 410-a by UE 115. DCI 405-a may also indicate (at 425-a) a scheduling of future transmissions of PDSCH from a serving base station. Thus, UE 115 may send over-the-air coordination signaling 410-a at a time prior to the scheduled transmission of PDSCH 420-a in order to avoid interference with PDSCH 420-a from a neighboring base station 105. The timing of over-the-air coordination signaling transmissions may be pre-configured or may be dynamically configured (e.g., via RRC signaling, MAC-CE signaling, in a DCI, or in other messaging).

[0090] In some cases, the UE 115 may use the same beam that it uses for downlink PDSCH reception for uplink over-the-air coordination signaling transmission 410. In other cases, the UE 115 may use a different transmit beam for uplink over-the-air coordination signaling 410 transmission than the receive beam that the UE 115 uses for receiving downlink PDSCH 420. The beam index may be indicated to the UE 115 via RRC signaling, MAC-CE signaling, in the DCI, or in other messaging.

[0091] There may be a given time gap between the UE 115 sending the uplink over-the-air coordination signaling 410 and the UE 115 receiving the PDSCH 420 from its serving base station 105. The time gap and the time at which the UE 115 sends the over-the-air signaling 410 may be pre-configured, or may be dynamic and indicated via RRC signaling, MAC-CE signaling, DCI, or a combination thereof. The time gap value may be a common gap time that may be shared by the serving base station 105 and the potentially interfering base station 105. For example, the frame structures 401 and 403 show a short time gap between the transmission of the over-the-air signaling 410 and the reception of the PDSCH 420. The time gap may be pre-configured or dynamically configured.

[0092] Frame structure 401 illustrates an example uplink and downlink transmission configuration. UE 115 may receive DCI 405-a in a first downlink timeslot. DCI 405-a may indicate (at 430-a) a scheduling for transmission of over-the-air signaling 410-a by UE 115. DCI 405-a may also indicate (at 425-a) a scheduling for transmission of PDSCH 420-a from serving base station 105. Thus, UE 115 may send over-the-air signaling 410-a at a time prior to the scheduled transmission of PDSCH 420-a in an attempt to prevent interference with reception of PDSCH 420-a by UE 115.

[0093] Frame structure 402 shows an example of an air coordination signaling 410-b response from the perspective of a neighboring (and potentially interfering) base station 105 based on the transmission of air coordination signaling by a UE 115. The base station 105 can send a DCI 405-b, which can indicate its configured transmit beam and other transmit information, including the scheduling of PDSCH 420-b. The scheduled PDSCH 420-b may overlap with the PDSCH 420-a scheduled by the serving base station 105. Based on the determination of potential interference, the UE 115 can send air coordination signaling 410-b to the potentially interfering base station 105. The interfering base station 105 can receive the air coordination signaling 410-b and then send a DCI 415 to the UE 115 it serves to cancel the transmission of the potentially interfering PDSCH 420-b. The UE 115 served by the serving base station 105 may also receive DCI 415, which may instruct the served UE 115 to ignore the information in DCI 405-b and, therefore, not attempt to decode the interfering PDSCH 420-b. The transmission of DCI 415 may be determined by the reception of over-the-air signaling 410-b (e.g., indicated at 435-a). Thus, the potential victim UE 115 may be able to receive communications (e.g., PDSCH 420-a) from the serving base station 105 without interference from the base station 105 and the PDSCH 420-b.

[0094] In other cases, the time gap between sending the over-the-air signaling 410 by the UE 115 and receiving the potentially interfering PDSCH 420-c from the neighbor base station 105 may be longer. The time gap shown in the frame structures 403 and 404 shows the longer time gap between sending the over-the-air signaling 410 by the UE 115 and the scheduled transmission of the PDSCH 420 by the neighbor base station 105. The longer time gap may also be pre-configured or dynamically configured (e.g., via RRC signaling, MAC-CE signaling, in a DCI, or in other messaging).

[0095] In the frame structure 403 depicting communications between a serving base station 105 and a UE 115, the serving base station 105 may transmit a DCI 405-c indicating (at 430-b) a schedule for the UE 115 to transmit over-the-air coordination signaling 410-c to a neighboring (and potentially interfering) base station 105. The DCI 405-c may also indicate (at 425-c) a schedule for a PDSCH 420-c that may be transmitted by the serving base station 105 to the served UE 115.

[0096] In a frame structure 404 depicting communications between a neighboring base station 105 and a UE 115, the UE 115 may send over-the-air coordination signaling 410-d to the neighboring base station 105 prior to a grant 440 (e.g., DCI) sent by the potentially interfering base station 105. The potentially interfering base station 105 may detect the over-the-air coordination signaling 410-d prior to the grant 440 that schedules a PDSCH 420-d for the UE 115 served by the neighboring (and potentially interfering) base station 105. In this example, because the over-the-air signaling is sent to the potentially interfering base station 105 with a longer time gap prior to the time at which the PDSCH 420-d is to be scheduled, the interfering base station 105 may not send the grant 440 for scheduling (at 425-d) the interfering PDSCH 420-d. Otherwise the interfering PDSCH 420 - d may have been sent to a UE 115 served by the interfering base station 105 , but may have interfered with the UE 115 communicating with the serving base station 105 .

[0097] Figure 5 An example of a process flow 500 for supporting over-the-air interference coordination in accordance with aspects of the present disclosure is shown. In some examples, the process flow 500 can implement aspects of the wireless communication system 100, 201, 202, or 300. The process flow 500 can include a UE 115-f and base stations 105-g and 105-h, which can be respective examples of a UE 115 and a base station 105 as described herein.

[0098] At 505, UE 115-f may identify potential interference from a neighboring base station 105. In some cases, UE 115-f may monitor signaling from at least one of serving base station 105-g and neighboring base station 105-h (or other neighboring base stations) by using a receive beam (e.g., and a receive beam) of UE 115-f. UE 115-f may receive signaling from serving base station 105-g and may also receive signaling from a neighboring base station 105 (e.g., neighboring base station 105-h). UE 115-f may identify that UE 115-f is a potential victim of interference from neighboring base station 105-h.

[0099] To identify potential interference, UE 115-f may receive a first signal from serving base station 105-g via a first receive beam in a set of receive beams. The first signal may be associated with a first TCI state or a first SSB of serving base station 105-g. UE 115-f may also receive a second signal from neighboring base station 105-h via a first UE receive beam in a set of receive beams. The second signal may be associated with a second SSB or a second TCI state of neighboring base station 105-h. UE 115-f may determine that neighboring base station 105-h is a potentially interfering base station based at least in part on receiving the first and second signals.

[0100] At 510, UE 115-f may send an interference report to serving base station 105-g. In some cases, the interference report may indicate that the configured beams used by serving base station 105-g and neighboring base station 105-h may cause interference at UE 115-f. The interference report may indicate information related to neighboring base station 105-h, first TCI state, second TCI state, first SSB, second SSB, first receive beam, or any combination thereof. For example, the interference report may indicate information as shown in Table 1. The interference report may be sent via RRC signaling.

[0101] Based on receiving the interference report 510 from the UE 115-f, the base station 105-g may identify that the UE 115-f is a potential victim of interference from the neighboring base station. The base station 105-g may send additional signaling to the UE 115-f indicating that the UE 115-f is a potential victim UE of interference from the neighboring base station 105. Based on receiving the interference report from the UE 115-f, the serving base station 105-g may determine that the neighboring base station 105-h is a potential interfering base station.

[0102] Thus, at 515, the serving base station 105-g may send a backhaul message to the neighboring base station 105-h to configure the neighboring base station 105-h as a potential interfering base station.

[0103] The base station 105-g may send a DCI to the UE 115-f at 520. The DCI may indicate to the UE 115-f whether to send an over-the-air coordination signal based on determining whether the UE 115-f is a potential victim UE.

[0104] The base station 105-h may receive an interference indication message from the serving base station 105-g at 515. Based on receiving the message, the base station 105-h may identify the base station 105-h as a potentially interfering base station. The base station 105-h may monitor for interference coordination messages (e.g., over-the-air coordination signaling) from the UE 115-f. The neighboring base station 105-h may identify a downlink shared channel transmission for a second UE 115 communicating with the neighboring base station 105-h and may determine whether to send a PDSCH to another UE 115 based on monitoring the interference coordination signaling from the UE 115-f.

[0105] At 525, UE 115-f may send an interference coordination message (e.g., over-the-air coordination signaling) to a neighboring base station 105-h (e.g., an interfering base station 105) based on identifying that UE 115-f is a potential victim UE. The interference coordination message may request modification of one or more transmission parameters at the neighboring base station 105-h. UE 115-f may send the interference coordination message prior to a scheduled PDSCH transmission from serving base station 105-g. UE 115-f may send the interference coordination message via the same beam or a different beam as the beam used to receive the scheduled downlink shared channel transmission (e.g., PDSCH). UE 115-f may also receive an indication of a beam index for transmission of the interference coordination message via one of RRC, MAC-CE, or DCI.

[0106] The UE 115-f may identify a gap between the transmission of the interference coordination message and the PDSCH (from the serving base station 105-g or the neighboring base station 105-h). The UE 115-f may monitor the resources allocated for the PDSCH based on the gap after the transmission of the interference coordination message.

[0107] At 530, in some cases, the neighboring base station 105-h may refrain from transmitting downlink shared channel transmissions to the second UE based at least in part on detecting the interference coordination message from the UE 115-f. The neighboring base station 105-h may determine not to transmit by changing the beam at 530. In other cases, based on the priority determination, the neighboring base station 105-h may determine not to change the beam at 530 and may determine to maintain transmission of the downlink shared channel to the second UE regardless of receiving the interference coordination signaling from the UE 115-f.

[0108] At 535, UE 115-f may communicate with serving base station 105-g based on receiving PDSCH from serving base station 105-g at 535. Depending on whether neighboring base station 105-h determines to change its beam at 530, communication between UE 115-f and base station 105-g at 535 may have high interference (if base station 105-h does not change its beam at 530) or low interference (if base station 105-h changes its beam at 530).

[0109] In the above description of process flow 500, signaling may be sent or operations may be performed in a different order than the example order shown or at a different time. Some signaling or operations may be omitted from process flow 500, and other operations may be added to process flow 500. Additionally or alternatively, operations of process flow 500 performed by UE 115-f, base station 105-g, and base station 105-h (such as interference reporting 510 and over-the-air coordination signaling 525) may reduce interference at UE 115-f and, in some examples, may facilitate improvements in latency and use of system resources, among other benefits.

[0110] Figure 6 An example of an architecture 600 supporting a method for beam refinement in mmW channels in accordance with aspects of the present disclosure is shown. In some examples, the architecture 600 can implement aspects of a set of wireless communication systems 100, 200, 300, or frame structures 400. In some aspects, the diagram 600 can be an example of a receiving device (e.g., a first wireless device) or a transmitting device (e.g., a second wireless device) as described herein.

[0111] Broadly speaking, Figure 66 is a schematic diagram showing example hardware components of a wireless device according to various aspects of the present disclosure. The components shown may include those components that can be used for antenna element selection or for beamforming of the transmission of wireless signals. There are many architectures for antenna element selection and phase shifting, one example of which is shown here. Architecture 600 includes a modem (modulator / demodulator) 602, a digital-to-analog converter (DAC) 604, a first mixer 606, a second mixer 608, and a distributor 610. Architecture 600 also includes a plurality of first amplifiers 612, a plurality of phase shifters 614, a plurality of second amplifiers 616, and an antenna array 618 including a plurality of antenna elements 620. Transmission lines or other waveguides, wires, traces, etc. connecting various components are shown to show how the signal to be sent propagates between components. Grids 622, 624, 626, and 628 indicate the areas in which different types of signals in architecture 600 propagate or are processed. Specifically, square 622 indicates an area in which digital baseband signals propagate or are processed, square 624 indicates an area in which analog baseband signals propagate or are processed, square 626 indicates an area in which analog intermediate frequency (IF) signals propagate or are processed, and square 628 indicates an area in which analog radio frequency (RF) signals propagate or are processed. The architecture also includes local oscillator A 630, local oscillator B 632, and a communication manager 634.

[0112] Each antenna element 620 may include one or more sub-elements (not shown) for radiating or receiving RF signals. For example, a single antenna element 620 may include a first sub-element that is cross-polarized with a second sub-element, which may be used to independently transmit cross-polarized signals. The antenna element 620 may include a patch antenna or other type of antenna arranged in a linear pattern, a two-dimensional pattern, or another pattern. The spacing between the antenna elements 620 may allow signals with desired wavelengths transmitted individually by the antenna elements 620 to interact or interfere (e.g., form a desired beam). For example, given an expected range of wavelengths or frequencies, the spacing may provide a quarter wavelength, half wavelength, or other fractional wavelength spacing between adjacent antenna elements 620 to allow signals within the expected range transmitted by separate antenna elements 620 to interact or interfere.

[0113] The modem 602 processes and generates a digital baseband signal, and may also control the operation of the DAC 604, the first and second mixers 606 and 608, the distributor 610, the first amplifier 612, the phase shifter 614, or the second amplifier 616 to transmit the signal via one or more or all of the antenna elements 620. The modem 602 may process the signal and control the operation according to a communication standard such as the wireless standard discussed herein. The DAC 604 may convert the digital baseband signal received (and to be transmitted) from the modem 602 into an analog baseband signal. The first mixer 606 uses the local oscillator A 630 to up-convert the analog baseband signal into an analog IF signal within the IF. For example, the first mixer 606 may mix the signal with an oscillating signal generated by the local oscillator A 630 to "move" the baseband analog signal to the IF. In some cases, processing or filtering (not shown) may be performed at the IF. The second mixer 608 uses the local oscillator B 632 to up-convert the analog IF signal into an analog RF signal. Similar to the first mixer, the second mixer 608 can mix the signal with an oscillating signal generated by local oscillator B 632 to "move" the IF analog signal to the RF or frequency at which the signal will be transmitted or received. The modem 602 or the communication manager 634 can adjust the frequency of local oscillator A 630 or local oscillator B 632 so that the desired IF or RF frequency is generated and used to facilitate the processing and transmission of signals within the desired bandwidth.

[0114] In the illustrated architecture 600, the signal up-converted by the second mixer 608 is split or copied into multiple signals by the distributor 610. The distributor 610 in the architecture 600 splits the RF signal into multiple identical or nearly identical RF signals, as indicated by its presence in the square 628. In other examples, the splitting can be performed in the case of any type of signal, including baseband digital, baseband analog, or IF analog signals. Each of these signals can correspond to an antenna element 620, and the signal passes through an amplifier 612, 616, a phase shifter 614, or other elements corresponding to the corresponding antenna element 620 and is processed by it to be provided to the corresponding antenna element 620 of the antenna array 618 and transmitted by it. In one embodiment, the distributor 610 can be an active distributor connected to a power source and providing some gain so that the RF signal leaving the distributor 610 is at a power level equal to or greater than the signal entering the distributor 610. In another example, the splitter 610 is a passive splitter that is not connected to a power source, and the RF signal exiting the splitter 610 may be at a lower power level than the RF signal entering the splitter 610 .

[0115] After being split by the distributor 610, the resulting RF signal can enter an amplifier (such as the first amplifier 612) or a phase shifter 614 corresponding to the antenna element 620. The first and second amplifiers 612, 616 are shown with dashed lines because in some implementations, one or both of them may not be used. In one implementation, both the first amplifier 612 and the second amplifier 616 exist. In another implementation, neither the first amplifier 612 nor the second amplifier 616 exists. In other implementations, one of the two amplifiers 612, 616 exists, but the other does not. By way of example, if the distributor 610 is an active distributor, the first amplifier 612 may not be used. By way of another example, if the phase shifter 614 is an active phase shifter that can provide gain, the second amplifier 616 may not be used. The amplifiers 612, 616 can provide a desired level of positive gain or negative gain. Positive gain (positive dB) can be used to increase the amplitude of the signal to be radiated by a specific antenna element 620. Negative gain (negative dB) can be used to reduce the amplitude of a signal or suppress the radiation of a signal conducted by a particular antenna element. Each of the amplifiers 612, 616 can be independently controlled (e.g., by the modem 602 or the communication manager 634) to provide independent control of gain for each antenna element 620. For example, the modem 602 and / or the communication manager 634 can have at least one control line connected to each of the distributor 610, the first amplifier 612, the phase shifter 614, or the second amplifier 616, which can be used to configure the gain to provide a desired amount of gain for each component and, therefore, each antenna element 620.

[0116] The phase shifter 614 can provide a configurable phase shift or phase offset to the corresponding RF signal to be sent. The phase shifter 614 can be a passive phase shifter that is not directly connected to the power supply. The passive phase shifter may introduce some insertion loss. The second amplifier 616 can boost the signal to compensate for the insertion loss. The phase shifter 614 can be an active phase shifter connected to the power supply so that the active phase shifter provides a certain gain amount or prevents insertion loss. The setting of each phase shifter 614 in the phase shifter 614 is independent, which means that each phase shifter 614 can be set to provide a desired phase shift amount, or the same phase shift amount or some other configuration. The modem 602 or the communication manager 634 can have at least one control line, which is connected to each phase shifter 614 in the phase shifter 614 and can be used to configure the phase shifter 614 to provide a desired phase shift amount or phase offset amount between the antenna elements 620.

[0117] The architecture 600 is given by way of example to illustrate an architecture for sending and / or receiving signals. It will be understood that the architecture 600 or each part of the architecture 600 can be repeated multiple times within the architecture to accommodate or provide any number of RF chains, antenna elements or antenna panels. In addition, a large number of alternative architectures are possible and expected. For example, although only a single antenna array 618 is shown, two, three or more antenna arrays may be included, each antenna array having one or more of its own corresponding amplifiers, phase shifters, dividers, mixers, DACs or modems. For example, a single UE may include two, four or more antenna arrays, which are used to send or receive signals at different physical locations on the UE or in different directions. In addition, mixers, dividers, amplifiers, phase shifters and other components may be located in different signal type areas (e.g., different squares in squares 622, 624, 626, 628) in different implementation architectures. For example, in different implementations, splitting the signal to be sent into multiple signals may occur at analog RF, analog IF, analog baseband or digital baseband frequencies.

[0118] Similarly, amplification or phase shifting can also occur at different frequencies. For example, in some expected implementations, one or more of the distributor 610, amplifiers 612, 616, or phase shifters 614 can be located between the DAC 604 and the first mixer 606 or between the first mixer 606 and the second mixer 608. In one example, the functions of one or more components in the component can be combined into one component. For example, the phase shifter 614 can perform amplification to include or replace the first or second amplifier 612, 616. By way of another example, the phase shift can be implemented by the second mixer 608 to avoid using a separate phase shifter 614. This technique is sometimes referred to as a local oscillator (LO) phase shift. In one implementation of this configuration, multiple IF to RF mixers (e.g., for each antenna element chain) can be present in the second mixer 608, and the local oscillator B 632 will provide different local oscillator signals (with different phase offsets) to each IF to RF mixer.

[0119] The modem 602 or the communication manager 634 can control one or more of the other components to select one or more antenna elements 620 or form a beam for the transmission of one or more signals. For example, for the transmission of a signal (or multiple signals), the antenna elements 620 can be individually selected or deselected by controlling the amplitude of one or more corresponding amplifiers (such as the first amplifier 612 or the second amplifier 616). Beamforming includes using multiple signals on different antenna elements to generate beams, wherein one or more or all of the multiple signals are offset in phase relative to each other. The formed beam can carry physical or higher layer reference signals or information. When each of the multiple signals is radiated from the corresponding antenna element 620, the radiated signals interact, interfere (constructive interference and destructive interference), and amplify each other to form the resulting beam. The shape (such as the amplitude, width, or the presence of side lobes) and direction (such as the angle of the beam relative to the surface of the antenna array 618) can be dynamically controlled by modifying the phase shift or phase offset imparted by the phase shifter 614 and the amplitude imparted by the amplifiers 612, 616 relative to each other.

[0120] When the architecture 600 is configured as a receiving device, the communication manager 634 may perform a first set of beam measurements for a first plurality of beams on a wireless channel between a first wireless device and a second wireless device, each beam in the first plurality of beams having a first beam width. The communication manager 634 may send a first beam measurement report for the first plurality of beams to the second wireless device, the first beam measurement report indicating a beam scanning order for a second set of beam measurements for a second plurality of beams. The communication manager 634 may perform a second set of beam measurements for a second plurality of beams on the wireless channel according to the indicated beam scanning order, each beam in the second plurality of beams having a second beam width narrower than the first beam width. The communication manager 634 may send a second beam measurement report to the second wireless device based at least in part on the second set of beam measurements. The communication manager 634 may receive from the second wireless device an indication of beam selection for transmission from the second wireless device based at least in part on the first and second sets of beam measurements.

[0121] When the architecture 600 is configured as a transmitting device, the communication manager 634 may transmit a first plurality of beams on a wireless channel between a second wireless device and a first wireless device, each beam in the first plurality of beams having a first beam width. The communication manager 634 may receive a first beam measurement report for the first plurality of beams from the first wireless device, the first beam measurement report indicating a beam scanning order for a second set of beam measurements for the second plurality of beams. The communication manager 634 may transmit a second plurality of beams according to the indicated beam scanning order, each beam in the second plurality of beams having a second beam width narrower than the first beam width. The communication manager 634 may receive a second beam measurement report from the first wireless device based at least in part on the second plurality of beams. The communication manager 634 may send an indication of a beam selected for transmission from the second wireless device to the first wireless device based at least in part on the second beam measurement report.

[0122] The communications manager 634 may reside partially or completely within one or more other components of the architecture 600. For example, in at least one implementation, the communications manager 634 may reside within the modem 602.

[0123] Figure 7 A block diagram 700 of a device 705 supporting over-the-air interference coordination according to aspects of the present disclosure is shown. The device 705 may be an example of aspects of a UE 115 as described herein. The device 705 may include a receiver 710, an interference manager 715, and a transmitter 720. The device 705 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0124] The receiver 710 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to air interference coordination, etc.). The information may be communicated to other components of the device 705. The receiver 710 may be a reference Fig.10 Examples of various aspects of the transceiver 1020 are described. The receiver 710 may utilize a single antenna or a group of antennas.

[0125] The interference manager 715 may perform the following operations: identifying, by the UE communicating with the serving base station, that the UE is a potential victim of interference from a neighboring base station; sending an interference coordination message to the neighboring base station based on the identification, the interference coordination message requesting modification of one or more transmission parameters at the neighboring base station; and communicating with the serving base station after sending the interference coordination message. The interference manager 715 may be an example of aspects of the interference manager 1010 described herein.

[0126] The interference manager 715 or its subcomponents may be implemented in hardware, in code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the interference manager 715 or its subcomponents may be performed by 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, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0127] The interference manager 715 or its subcomponents can be physically located at various locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the interference manager 715 or its subcomponents can be separate and distinct components. In some examples, according to various aspects of the present disclosure, the interference manager 715 or its subcomponents can be combined with one or more other hardware components (including, but not limited to, input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof).

[0128] The transmitter 720 can transmit signals generated by other components of the device 705. In some examples, the transmitter 720 can be co-located with the receiver 710 in a transceiver module. For example, the transmitter 720 can be a reference Fig.10 Examples of various aspects of the transceiver 1020 are described. The transmitter 720 may utilize a single antenna or a group of antennas.

[0129] In some examples, the interference manager 715 can be implemented as an integrated circuit or chipset for a mobile device modem, and the receiver 705 and transmitter 720 can be implemented as analog components (e.g., amplifiers, filters, antennas) coupled to the mobile device modem to enable wireless transmission and reception on one or more frequency bands.

[0130] The interference manager 715 as described herein may be implemented to achieve one or more potential advantages. One implementation may allow the device 705 to save power and extend battery life by reducing the number of retransmissions caused by interference from neighboring base stations. For example, the device 705 may send over-the-air signaling (e.g., an interference coordination message) to a neighboring base station to request that the neighboring base station modify one or more transmission parameters to reduce interference at the device 705. Another implementation may allow the device 705 to select a narrow receive beam for communication with a serving base station to reduce interference from a neighboring base station.

[0131] Based on implementing the over-the-air signaling techniques described herein, the processor of the UE 115 (e.g., controlling the receiver 710, the transmitter 740, or the like) Fig. 9 The transceiver 920 described herein can reduce interference at the UE 115 and more efficiently utilize system resources at the serving base station and the neighboring base stations. In addition, the processor of the UE 115 can send a report indicating potentially interfering neighboring base stations and receive control information indicating information for sending air interference messages to neighboring base stations.

[0132] Figure 8 A block diagram 800 of a device 805 supporting over-the-air interference coordination according to aspects of the present disclosure is shown. The device 805 may be an example of aspects of the device 705 or UE 115 as described herein. The device 805 may include a receiver 810, an interference manager 815, and a transmitter 835. The device 805 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0133] The receiver 810 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to air interference coordination, etc.). The information may be communicated to other components of the device 805. The receiver 810 may be a reference Fig.10 Examples of various aspects of the transceiver 1020 are described. The receiver 810 may utilize a single antenna or a group of antennas.

[0134] Interference manager 815 may be an example of aspects of interference manager 715 as described herein. Interference manager 815 may include potential victim component 820, interference message transmitter 825, and communication component 830. Interference manager 815 may be an example of aspects of interference manager 1010 as described herein.

[0135] Potential victim component 820 can identify, by the UE in communication with a serving base station, that the UE is a potential victim of interference from a neighboring base station.

[0136] The interference message transmitter 825 may send an interference coordination message to the neighboring base station based on the identification, the interference coordination message requesting modification of one or more transmission parameters at the neighboring base station.

[0137] The communication component 830 can communicate with the serving base station after sending the interference coordination message.

[0138] The transmitter 835 can transmit signals generated by other components of the device 805. In some examples, the transmitter 835 can be co-located with the receiver 810 in a transceiver module. For example, the transmitter 835 can be a reference Fig.10Examples of various aspects of the transceiver 1020 are described. The transmitter 835 may utilize a single antenna or a group of antennas.

[0139] Fig. 9 Block diagram 900 of an interference manager 905 supporting over-the-air interference coordination in accordance with aspects of the present disclosure is shown. Interference manager 905 may be an example of aspects of interference manager 715, interference manager 815, or interference manager 1010 described herein. Interference manager 905 may include potential victim component 910, interference message transmitter 915, communication component 920, signal monitor 925, signal receiver 930, configuration manager 935, indication receiver 940, report transmitter 945, and gap component 950. Each of these modules may communicate with each other directly or indirectly (e.g., via one or more buses).

[0140] Potential victim component 910 can identify that a UE is a potential victim of interference from a neighboring base station through a UE in communication with a serving base station. In some examples, potential victim component 910 can identify that a UE is a potential victim of interference from a neighboring base station based on reception. In some cases, potential victim component 910 can determine that a UE is a potential victim UE based on monitoring. In some aspects, potential victim component 910 can determine that a neighboring base station is a potential interfering base station based on receiving a first signal and a second signal.

[0141] The interference message transmitter 915 may send an interference coordination message to a neighboring base station based on the identification, and the interference coordination message requests modification of one or more transmission parameters at the neighboring base station. In some examples, the interference message transmitter 915 may send an interference coordination message to a neighboring base station in a direction based on the indication. In some cases, the interference message transmitter 915 may send an interference coordination message to a neighboring base station before a downlink shared channel transmission. In some aspects, the interference message transmitter 915 may send an interference coordination message via a beam that is the same as or different from the beam used for downlink shared channel transmission. In some instances, the interference message transmitter 915 may send an interference coordination message via a transmission beam corresponding to a beam index. In some examples, the interference message transmitter 915 may include an indication of UE priority in the interference coordination message.

[0142] Communication component 920 can communicate with the serving base station after sending the interference coordination message.

[0143] The signal monitor 925 may use the receive beam of the UE to monitor signaling from at least one of the serving base station or the neighboring base station. In some examples, the signal monitor 925 may monitor signaling from a set of base stations via a set of receive beams, the set of base stations including the serving base station and the neighboring base stations. In some cases, the signal monitor 925 may monitor resources allocated for downlink shared channel transmission according to a gap after transmission of an interference coordination message.

[0144] The signal receiver 930 may receive signaling from both the serving base station and the neighboring base station based on monitoring. In some examples, the signal receiver 930 may receive a first signal from the serving base station via a first receiving beam in a receiving beam set based on monitoring, and the first signal is associated with a first TCI state or a first SSB of the serving base station. In some cases, the signal receiver 930 may receive a second signal from a neighboring base station via a first receiving beam in a receiving beam set based on monitoring, and the second signal is associated with a second TCI state or a second SSB of the neighboring base station. In some aspects, the signal receiver 930 may receive a downlink control message from the serving base station, and the downlink control message indicates a TCI state for downlink shared channel transmission. In some instances, the downlink control message indicates resources for interference coordination messages and information to be included in the interference coordination message. In some cases, the downlink control message includes a DCI carried via a PDCCH.

[0145] The configuration manager 935 may configure the UE as a potential victim UE based on the identification according to the UE receive beam set, the serving base station transmit beam set, and the neighbor base station transmit beam set.

[0146] The indication receiver 940 may receive an indication from a serving station to send an interference coordination message to a neighboring base station, wherein the UE is identified as a potential victim based on the indication. In some examples, the indication receiver 940 may receive an indication of a beam index for transmission of the interference coordination message via one of RRC signaling, MAC-CE, or a downlink control message.

[0147] The report transmitter 945 may send a report to the serving base station based on determining that the neighboring base station is a potential interfering base station, the report indicating information related to the following items: the neighboring base station, the first TCI state, the second TCI state, the first SSB, the second SSB, the first receive beam, or any combination thereof. In some cases, the report is sent via RRC signaling.

[0148] The gap component 950 can identify a gap between the transmission of the interference coordination message and the downlink shared channel transmission. In some examples, the gap component 950 can receive an indication of the gap from the serving base station via one of RRC signaling, MAC-CE, or a downlink control message. In some cases, the gap is common to the serving base station and the neighboring base station. In some aspects, the gap is pre-configured at the UE, the serving base station, and the neighboring base station.

[0149] Fig.10 A schematic diagram of a system 1000 including a device 1005 supporting over-the-air interference coordination according to aspects of the present disclosure is shown. The device 1005 may be an example of or include a component of a device 705, a device 805, or a UE 115 as described herein. The device 1005 may include components for two-way voice and data communications, including components for sending and receiving communications, including an interference manager 1010, an I / O controller 1015, a transceiver 1020, an antenna 1025, a memory 1030, and a processor 1040. These components may communicate electronically via one or more buses (e.g., a bus 1045).

[0150] The interference manager 1010 can perform the following operations: identify that the UE is a potential victim of interference from a neighboring base station through the UE communicating with the serving base station; send an interference coordination message to the neighboring base station based on the identification, the interference coordination message requesting modification of one or more transmission parameters at the neighboring base station; and communicate with the serving base station after sending the interference coordination message.

[0151] I / O controller 1015 can manage input and output signals for device 1005. I / O controller 1015 can also manage peripheral devices that are not integrated into device 1005. In some cases, I / O controller 1015 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1015 can utilize an operating system, such as MS- MS- or another known operating system. In other cases, I / O controller 1015 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 1015 may be implemented as part of a processor. In some cases, a user may interact with device 1005 via I / O controller 1015 or via hardware components controlled by I / O controller 1015.

[0152] The transceiver 1020 may communicate bidirectionally via one or more antennas, wired or wireless links as described herein. For example, the transceiver 1020 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1020 may also include a modem for modulating packets and providing the modulated packets to an antenna for transmission, and demodulating packets received from an antenna.

[0153] In some cases, device 1025 may include a single antenna 1025, or device 1205 may have more than one antenna 1025, which may be capable of sending or receiving multiple wireless transmissions simultaneously.

[0154] Memory 1030 may include random access memory (RAM) and read-only memory (ROM). Memory 1030 may store computer-readable, computer-executable code 1035 including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, memory 1030 may also contain, among other things, a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0155] Processor 1040 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor 1040 may be configured to operate a memory array using a memory controller. In other cases, the memory controller is integrated into processor 1040. Processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1030) to cause device 1005 to perform various functions (e.g., functions or tasks that support air interference coordination).

[0156] The code 1035 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1035 may be stored in a non-transitory computer-readable medium (such as a system memory or other type of memory). In some cases, the code 1035 may not be directly executable by the processor 1040, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0157] Fig.11A block diagram 1100 of a device 1105 supporting over-the-air interference coordination according to aspects of the present disclosure is shown. The device 1105 may be an example of aspects of a base station 105 as described herein. The device 1105 may include a receiver 1110, an interference manager 1115, and a transmitter 1120. The device 1105 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0158] The receiver 1110 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to air interference coordination, etc.). The information may be communicated to other components of the device 705. The receiver 1110 may be a reference Fig.14 Examples of various aspects of the transceiver 1420 are described. The receiver 1110 may utilize a single antenna or a group of antennas.

[0159] The interference manager 1115 may perform the following operations: identifying that a UE in communication with a serving base station is a potential victim of interference from a neighboring base station; and based on the identification, sending a downlink control message to the UE indicating that the UE is a potential victim UE. The interference manager 1115 may also perform the following operations: identifying that a neighboring base station is a potential interfering base station for a UE in communication with a serving base station; and based on the identification, monitoring interference coordination messages from the UE. The interference manager 1115 may be an example of aspects of the interference manager 1410 described herein.

[0160] The interference manager 1115 or its subcomponents may be implemented in hardware, in code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the interference manager 1115 or its subcomponents may be performed by a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in this disclosure.

[0161] The interference manager 1115 or its subcomponents can be physically located at various locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the interference manager 1115 or its subcomponents can be separate and distinct components. In some examples, according to various aspects of the present disclosure, the interference manager 1115 or its subcomponents can be combined with one or more other hardware components (including, but not limited to, input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof).

[0162] The transmitter 1120 may transmit signals generated by other components of the device 1105. In some examples, the transmitter 1120 may be co-located with the receiver 1110 in a transceiver module. For example, the transmitter 1120 may be a reference Fig.14 Examples of various aspects of the transceiver 1420 are described. The transmitter 1120 may utilize a single antenna or a group of antennas.

[0163] Fig.12 A block diagram 1200 of a device 1205 supporting over-the-air interference coordination according to aspects of the present disclosure is shown. The device 1205 may be an example of aspects of the device 1105 or base station 105 as described herein. The device 1205 may include a receiver 1210, an interference manager 1215, and a transmitter 1235. The device 1205 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0164] The receiver 1210 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to air interference coordination, etc.). The information may be communicated to other components of the device 1205. The receiver 1210 may be a reference Fig.14 Examples of various aspects of the transceiver 1420 are described. The receiver 1210 may utilize a single antenna or a group of antennas.

[0165] Interference manager 1215 may be an example of aspects of interference manager 1115 as described herein. Interference manager 1215 may include victim identifier 1220, message transmitter 1225, and interference message monitor 1230. Interference manager 1215 may be an example of aspects of interference manager 1410 as described herein.

[0166] The victim identifier 1220 may identify that a UE in communication with a serving base station is a potential victim of interference from a neighboring base station.

[0167] The message transmitter 1225 may send a downlink control message to the UE indicating that the UE is a potential victim UE based on the identification.

[0168] The victim identifier 1220 may identify a neighboring base station as a potential interfering base station for a UE communicating with the serving base station.

[0169] The interference message monitor 1230 may monitor the interference coordination message from the UE based on the identification.

[0170] The transmitter 1235 can transmit signals generated by other components of the device 1205. In some examples, the transmitter 1235 can be co-located with the receiver 1210 in a transceiver module. For example, the transmitter 1235 can be a reference Fig.14 Examples of various aspects of the transceiver 1420 are described. The transmitter 1235 can utilize a single antenna or a group of antennas.

[0171] Fig.13 A block diagram 1300 of an interference manager 1305 supporting over-the-air interference coordination in accordance with aspects of the present disclosure is shown. The interference manager 1305 may be an example of aspects of the interference manager 1115, the interference manager 1215, or the interference manager 1410 described herein. The interference manager 1305 may include a victim identifier 1310, a message transmitter 1315, a backhaul transmitter 1320, a beam pair identifier 1325, a report receiver 1330, an indication transmitter 1335, a gap module 1340, an interference message monitor 1345, a shared channel component 1350, a backhaul receiver 1355, and a configuration component 1360. Each of these modules may communicate with each other directly or indirectly (e.g., via one or more buses).

[0172] The victim identifier 1310 may identify that a UE in communication with a serving base station is a potential victim of interference from a neighboring base station. In some examples, the victim identifier 1310 may identify that a neighboring base station is a potential interfering base station for a UE in communication with a serving base station. In some cases, the victim identifier 1310 may determine that a neighboring base station is a potential interfering base station based on the identification. In some aspects, the victim identifier 1310 may identify that a UE is a potential victim of interference from a neighboring base station based on a set of beam pairs. In some instances, the victim identifier 1310 may identify that a UE is a potential victim of interference from a neighboring base station based on a report.

[0173] The message transmitter 1315 may send a downlink control message to the UE indicating that the UE is a potential victim UE based on the identification. In some cases, the downlink control message indicates a TCI state for downlink shared channel transmission to the UE, resources for interference coordination messages from the UE, information to be included in the interference coordination message, an indication for the UE to send interference coordination messages to neighboring base stations, or any combination thereof. In some aspects, the information to be included in the interference coordination message includes a set of time-frequency resources allocated for transmission of the interference coordination message, a transmission timing for the interference coordination message, an uplink transmission beam index for the interference coordination message, or any combination thereof.

[0174] The interference message monitor 1345 may monitor interference coordination messages from the UE based on identification. In some examples, the interference message monitor 1345 may monitor interference coordination messages using interference transmission beams. In some cases, the interference message monitor 1345 may receive interference coordination messages from the UE based on monitoring, wherein the interference coordination message is received via a beam that is the same as or different from a beam used for downlink shared channel transmission of a second UE communicating with a neighboring base station. In some aspects, the interference message monitor 1345 may receive interference coordination messages from the UE based on monitoring. In some cases, the interference coordination message indicates a priority level of the UE.

[0175] The backhaul transmitter 1320 may send a backhaul message to the neighboring base station based on the determination to configure the neighboring base station as a potential interfering base station. In some examples, a backhaul message indicating that the neighboring base station is a potential interfering base station is sent to the neighboring base station based on the report, wherein the backhaul message includes an indication of the potential victim UE and information related to the following: a second TCI state, a second SSB, a serving base station, a transmission beam associated with the second TCI state or the second SSB, or any combination thereof. In some cases, the backhaul transmitter 1320 may send a backhaul message indicating a gap to the neighboring base station.

[0176] The beam pair identifier 1325 may identify a set of beam pairs associated with the UE, the serving base station, and the neighboring base stations.

[0177] The report receiver 1330 can receive a report from the UE, indicating information related to: a neighboring base station, a first TCI state of a first signal associated with a serving base station, a first SSB of a first signal associated with a serving base station, a second TCI state of a second signal associated with a neighboring base station, a second SSB of a second signal associated with a neighboring base station, a receive beam of the UE, or any combination thereof.

[0178] The indication transmitter 1335 may send an indication of a beam index used for transmission of the interference coordination message via one of RRC signaling, MAC-CE, or DCI, wherein the beam index is the same as or different from the index of the beam received for downlink shared channel transmission. In some examples, the indication transmitter 1335 may send an indication of a gap to the UE via one of RRC signaling, MAC control element (MAC-CE), or DCI, wherein the gap is common to the serving base station and the neighboring base station and indicates a delay between transmission of the interference coordination message and downlink shared channel transmission.

[0179] The gap module 1340 may receive an indication of a gap from a serving base station, wherein the gap is common to the serving base station and the neighboring base station and indicates a delay between transmission of an interference coordination message and a downlink shared channel transmission for a second UE in communication with the neighboring base station. In some examples, the gap module 1340 may identify a gap, the gap indicating a delay between transmission of an interference coordination message and a downlink shared channel transmission for a second UE in communication with the neighboring base station, wherein the gap is a fixed value preconfigured at the serving base station, the UE, and the neighboring base station. In some cases, the gap between the interference coordination message from the UE and the downlink shared channel transmission from the neighboring base station is a default value configured at the serving base station, the UE, and the neighboring base station.

[0180] The shared channel component 1350 may identify a downlink shared channel transmission for a second UE communicating with a neighboring base station. In some examples, the shared channel component 1350 may determine whether to send a downlink shared channel transmission based on monitoring. In some aspects, the shared channel component 1350 may send a downlink shared channel transmission to the second UE based on the absence of an interference coordination message using an interfering transmission beam during monitoring. In some cases, the shared channel component 1350 may avoid sending a downlink shared channel transmission to the second UE based on an interference coordination message using an interfering transmission beam detected during monitoring. In some instances, the shared channel component 1350 may send a DCI to a second UE communicating with a neighboring base station, and the DCI indicates cancellation of a downlink shared channel transmission for the second UE based on receiving an interference coordination message. In some examples, the shared channel component 1350 may avoid sending a downlink shared channel transmission to a second UE communicating with a neighboring base station based on receiving an interference coordination message. In some cases, the shared channel component 1350 may send a downlink shared channel transmission to a second UE communicating with a neighboring base station based on a priority level of the UE being lower than that of the neighboring base station.

[0181] The backhaul receiver 1355 may receive a backhaul message from the serving base station for configuring the neighboring base station as a potential interfering base station based on the determination. In some examples, the backhaul receiver 1355 may receive a backhaul message from the serving base station indicating the UE as a potential victim UE, the backhaul message including an indication of the following: an interfering transmission beam for the neighboring base station, an interfering TCI state for the neighboring base station, an interfering SSB for the neighboring base station, or any combination thereof. In some cases, the backhaul receiver 1355 may receive a backhaul message from the serving base station indicating a priority level of the UE.

[0182] Configuration component 1360 can configure the neighboring base station as a potential interfering base station based on the backhaul message.

[0183] Fig.14 A schematic diagram of a system 1400 including a device 1405 supporting over-the-air interference coordination according to aspects of the present disclosure is shown. The device 1405 may be an example of or include components of the device 1105, device 1205, or base station 105 as described herein. The device 1405 may include components for two-way voice and data communications, including components for sending and receiving communications, including an interference manager 1410, a network communication manager 1415, a transceiver 1420, an antenna 1425, a memory 1430, a processor 1440, and an inter-station communication manager 1445. These components may communicate electronically via one or more buses (e.g., bus 1450).

[0184] The interference manager 1410 may perform the following operations: identifying that a UE in communication with a serving base station is a potential victim of interference from a neighboring base station; and based on the identification, sending a downlink control message to the UE indicating that the UE is a potential victim UE. The interference manager 1410 may also perform the following operations: identifying that a neighboring base station is a potential interfering base station for a UE in communication with a serving base station; and based on the identification, monitoring interference coordination messages from the UE.

[0185] The network communications manager 1415 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1415 may manage the transmission of data communications for client devices (eg, one or more UEs 115).

[0186] The transceiver 1420 may communicate bidirectionally via one or more antennas, wired or wireless links as described herein. For example, the transceiver 1420 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1420 may also include a modem for modulating packets and providing the modulated packets to an antenna for transmission, and demodulating packets received from an antenna.

[0187] In some cases, device 1425 may include a single antenna 1425, or device 1425 may have more than one antenna 1425 that are capable of sending or receiving multiple wireless transmissions simultaneously.

[0188] Memory 1430 may include RAM, ROM, or a combination thereof. Memory 1430 may store computer readable code 1435 including instructions that, when executed by a processor (e.g., processor 1440), cause the device to perform various functions described herein. In some cases, memory 1430 may also contain, among other things, a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0189] Processor 1440 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor 1440 may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be integrated into processor 1440. Processor 1440 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1430) to cause device 1405 to perform various functions (e.g., functions or tasks that support air interference coordination).

[0190] The inter-site communication manager 1445 can manage communications with other base stations 105 and can include a controller or scheduler for controlling communications with UE 115 in cooperation with other base stations 105. For example, the inter-site communication manager 1445 can coordinate the scheduling of transmissions to UE 115 to implement various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-site communication manager 1445 can provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0191] The code 1435 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1435 may be stored in a non-transitory computer-readable medium (e.g., system memory or other types of memory). In some cases, the code 1435 may not be directly executable by the processor 1440, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0192] Fig.15 A flow chart illustrating a method 1500 for supporting air interference coordination according to aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 1500 may be implemented by a UE 115 or a component thereof as described herein. Figures 7 to 10 In some examples, the UE may execute an instruction set to control the functional units of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described herein.

[0193] At 1505, the UE may identify that the UE is a potential victim of interference from a neighboring base station by the UE communicating with the serving base station. The operations of 1505 may be performed according to the methods described herein. In some examples, aspects of the operations of 1505 may be performed as described with reference to Figures 7 to 10Describes the potential victim component to execute.

[0194] At 1510, the UE may send an interference coordination message to the neighboring base station based on the identification, the interference coordination message requesting modification of one or more transmission parameters at the neighboring base station. The operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be described with reference to Figures 7 to 10 The described interference message transmitter is implemented.

[0195] At 1515, the UE may communicate with the serving base station after sending the interference coordination message. The operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be described with reference to Figures 7 to 10 The communication components described are performed.

[0196] Fig.16 A flow chart illustrating a method 1600 for supporting air interference coordination according to aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 1600 may be implemented by a UE 115 or a component thereof as described herein. Figures 7 to 10 In some examples, the UE may execute an instruction set to control the functional units of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described herein.

[0197] At 1605, the UE may monitor signaling from at least one of a serving base station or a neighboring base station using a receive beam of the UE. The operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be described with reference to Figures 7 to 10 The signal monitor described is implemented.

[0198] At 1610, the UE may receive signaling from both the serving base station and the neighboring base station based on monitoring. The operations of 1610 may be performed according to the methods described herein. In some examples, aspects of the operations of 1610 may be performed as described with reference to Figures 7 to 10 The signal receiver described is implemented.

[0199] At 1615, the UE may identify, based on the reception, that the UE is a potential victim of interference from a neighboring base station. The operations of 1615 may be performed according to the methods described herein. In some examples, aspects of the operations of 1615 may be performed as described with reference to Figures 7 to 10 Describes the potential victim component to execute.

[0200] At 1620, the UE may send an interference coordination message to the neighboring base station based on the identification, the interference coordination message requesting modification of one or more transmission parameters at the neighboring base station. The operations of 1620 may be performed according to the methods described herein. In some examples, aspects of the operations of 1620 may be as described with reference to Figures 7 to 10 The described interference message transmitter is implemented.

[0201] At 1625, the UE may communicate with the serving base station after sending the interference coordination message. The operations of 1625 may be performed according to the methods described herein. In some examples, aspects of the operations of 1625 may be described with reference to Figures 7 to 10 The communication components described are performed.

[0202] Fig.17 A flow chart illustrating a method 1700 for supporting air interference coordination according to aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 1700 may be implemented by a UE 115 or a component thereof as described herein. Figures 7 to 10 In some examples, the UE may execute an instruction set to control the functional units of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described herein.

[0203] At 1705, the UE may receive a downlink control message from a serving base station, the downlink control message indicating a TCI state for downlink shared channel transmission, the downlink control message indicating resources for interference coordination messages and information to be included in the interference coordination messages. The operations of 1705 may be performed according to the methods described herein. In some examples, aspects of the operations of 1705 may be performed as described with reference to Figures 7 to 10 The signal receiver described is implemented.

[0204] At 1710, the UE may determine that the UE is a potential victim UE. The operations of 1710 may be performed according to the methods described herein. In some examples, aspects of the operations of 1710 may be performed as described with reference to Figures 7 to 10 Describes the potential victim component to execute.

[0205] At 1715, the UE may send an interference coordination message to the neighboring base station based on the identification, the interference coordination message requesting modification of one or more transmission parameters at the neighboring base station. The operations of 1715 may be performed according to the methods described herein. In some examples, aspects of the operations of 1715 may be as described with reference to Figures 7 to 10 The described interference message transmitter is implemented.

[0206] At 1720, the UE may communicate with the serving base station after sending the interference coordination message. The operations of 1720 may be performed according to the methods described herein. In some examples, aspects of the operations of 1720 may be described with reference to Figures 7 to 10 The communication components described are performed.

[0207] Fig.18 A flow chart illustrating a method 1800 for supporting air interference coordination according to aspects of the present disclosure is shown. The operations of the method 1800 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 1800 may be implemented by a UE 115 or a component thereof as described herein. Figures 7 to 10 In some examples, the UE may execute an instruction set to control the functional units of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described herein.

[0208] At 1805, the UE may monitor signaling from a set of base stations via a set of receive beams, the set of base stations including a serving base station and neighboring base stations. The operations of 1805 may be performed according to the methods described herein. In some examples, aspects of the operations of 1805 may be performed as described with reference to Figures 7 to 10 The signal monitor described is implemented.

[0209] At 1810, the UE may receive, based on monitoring, a first signal from a serving base station via a first receive beam in a receive beam set, the first signal being associated with a first TCI state or a first SSB of the serving base station. The operations of 1810 may be performed according to the methods described herein. In some examples, aspects of the operations of 1810 may be performed as described with reference to Figures 7 to 10 The signal receiver described is implemented.

[0210] At 1815, the UE may receive, based on monitoring, a second signal from a neighboring base station via a first receive beam in the receive beam set, the second signal being associated with a second TCI state or a second SSB of the neighboring base station. The operations of 1815 may be performed according to the methods described herein. In some examples, aspects of the operations of 1815 may be performed as described with reference to Figures 7 to 10 The signal receiver described is implemented.

[0211] At 1820, the UE may determine that the neighboring base station is a potential interfering base station based on receiving the first signal and the second signal. The operations of 1820 may be performed according to the methods described herein. In some examples, aspects of the operations of 1820 may be performed as described with reference to Figures 7 to 10 Describes the potential victim component to execute.

[0212] At 1825, the UE may send a report to the serving base station based at least in part on determining that the neighboring base station is a potentially interfering base station, the report indicating information related to: the neighboring base station, the first TCI state, the second TCI state, the first SSB, the second SSB, the first receive beam, or any combination thereof. The operations of 1825 may be performed according to the methods described herein. In some examples, aspects of the operations of 1825 may be performed as described with reference to Figures 7 to 10 The report transmitter described is executed.

[0213] At 1830, the UE may send an interference coordination message to the neighboring base station based on the identification, the interference coordination message requesting modification of one or more transmission parameters at the neighboring base station. The operations of 1830 may be performed according to the methods described herein. In some examples, aspects of the operations of 1830 may be as described with reference to Figures 7 to 10 The described interference message transmitter is implemented.

[0214] At 1835, the UE may communicate with the serving base station after sending the interference coordination message. The operations of 1835 may be performed according to the methods described herein. In some examples, aspects of the operations of 1835 may be performed as described with reference to Figures 7 to 10 The communication components described are performed.

[0215] Fig.19 A flow chart illustrating a method 1900 for supporting air interference coordination according to aspects of the present disclosure is shown. The operations of the method 1900 may be implemented by a base station 105 or a component thereof as described herein. For example, the operations of the method 1900 may be implemented by a base station 105 or a component thereof as described herein. Figures 11 to 14 In some examples, the base station may execute an instruction set to control the functional units of the base station to perform the functions described herein. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described herein.

[0216] At 1905, the base station may identify that a UE in communication with the serving base station is a potential victim of interference from a neighboring base station. The operations of 1905 may be performed according to the methods described herein. In some examples, aspects of the operations of 1905 may be performed as described with reference to Figures 11 to 14 The victim identifier described is executed.

[0217] At 1910, the base station may send a downlink control message to the UE indicating that the UE is a potential victim UE based on the identification. The operations of 1910 may be performed according to the methods described herein. In some examples, aspects of the operations of 1910 may be performed as described with reference to Figures 11 to 14 Describes the message transmitter to perform.

[0218] Fig. 20A flow chart illustrating a method 2000 for supporting air interference coordination according to aspects of the present disclosure is shown. The operations of the method 2000 may be implemented by a base station 105 or a component thereof as described herein. For example, the operations of the method 2000 may be implemented by a base station 105 or a component thereof as described herein. Figures 11 to 14 In some examples, the base station may execute an instruction set to control the functional units of the base station to perform the functions described herein. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described herein.

[0219] At 2005, the base station may identify that a UE in communication with the serving base station is a potential victim of interference from a neighboring base station. The operations of 2005 may be performed according to the methods described herein. In some examples, aspects of the operations of 2005 may be performed as described with reference to Figures 11 to 14 The victim identifier described is executed.

[0220] At 2010, the base station may determine that the neighboring base station is a potential interfering base station based on the identification. The operations of 2010 may be performed according to the methods described herein. In some examples, aspects of the operations of 2010 may be performed as described with reference to Figures 11 to 14 The victim identifier described is executed.

[0221] At 2015, the base station may send a backhaul message to the neighboring base station based on the determination to configure the neighboring base station as a potential interfering base station. The operations of 2015 may be performed according to the methods described herein. In some examples, various aspects of the operations of 2015 may be performed as described with reference to Figures 11 to 14 The backhaul transmitter described herein is performed.

[0222] At 2020, the base station may send a downlink control message to the UE indicating that the UE is a potential victim UE based on the identification. The operations of 2020 may be performed according to the methods described herein. In some examples, aspects of the operations of 2020 may be performed as described with reference to Figures 11 to 14 Describes the message transmitter to perform.

[0223] Fig.21 A flow chart illustrating a method 2100 for supporting air interference coordination according to aspects of the present disclosure is shown. The operations of the method 2100 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 2100 may be implemented by a base station 105 or components thereof as described herein. Figures 11 to 14 In some examples, the base station may execute an instruction set to control the functional units of the base station to perform the functions described herein. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described herein.

[0224] At 2105, the base station may receive a report from the UE, the report indicating information related to: a neighboring base station, a first TCI state of a first signal associated with a serving base station, a first SSB of a first signal associated with a serving base station, a second TCI state of a second signal associated with a neighboring base station, a second SSB of a second signal associated with a neighboring base station, a receive beam of the UE, or any combination thereof. The operations of 2105 may be performed according to the methods described herein. In some examples, aspects of the operations of 2105 may be performed as described with reference to Figures 11 to 14 The report receiver described is executed.

[0225] At 2110, the base station may identify, based on the report, that a UE in communication with the serving base station is a potential victim of interference from a neighboring base station. The operations of 2110 may be performed according to the methods described herein. In some examples, aspects of the operations of 2110 may be performed as described with reference to Figures 11 to 14 The victim identifier described is executed.

[0226] At 2115, the base station may send a downlink control message to the UE indicating that the UE is a potential victim UE based on the identification. The operations of 2115 may be performed according to the methods described herein. In some examples, aspects of the operations of 2115 may be performed as described with reference to Figures 11 to 14 Describes the message transmitter to perform.

[0227] Fig. 22 A flow chart illustrating a method 2200 for supporting air interference coordination according to aspects of the present disclosure is shown. The operations of the method 2200 may be implemented by a base station 105 or a component thereof as described herein. For example, the operations of the method 2200 may be implemented by a base station 105 or a component thereof as described herein. Figures 11 to 14 In some examples, the base station may execute an instruction set to control the functional units of the base station to perform the functions described herein. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described herein.

[0228] At 2205, the base station may identify that the neighboring base station is a potential interfering base station for a UE communicating with the serving base station. The operations of 2205 may be performed according to the methods described herein. In some examples, aspects of the operations of 2205 may be performed as described with reference to Figures 11 to 14 The victim identifier described is executed.

[0229] At 2210, the base station may monitor interference coordination messages from the UE based on the identification. The operations of 2210 may be performed according to the methods described herein. In some examples, aspects of the operations of 2210 may be as described with reference to Figures 11 to 14 The interference message monitor described is implemented.

[0230] Fig.23 A flow chart illustrating a method 2300 for supporting air interference coordination according to aspects of the present disclosure is shown. The operations of the method 2300 may be implemented by a base station 105 or a component thereof as described herein. For example, the operations of the method 2300 may be implemented by a base station 105 or a component thereof as described herein. Figures 11 to 14 In some examples, the base station may execute an instruction set to control the functional units of the base station to perform the functions described herein. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described herein.

[0231] At 2305, the base station may identify that the neighboring base station is a potential interfering base station for a UE communicating with the serving base station. The operations of 2305 may be performed according to the methods described herein. In some examples, aspects of the operations of 2305 may be performed as described with reference to Figures 11 to 14 The victim identifier described is executed.

[0232] At 2310, the base station may monitor interference coordination messages from the UE based on the identification. The operations of 2310 may be performed according to the methods described herein. In some examples, aspects of the operations of 2310 may be described with reference to Figures 11 to 14 The interference message monitor described is implemented.

[0233] At 2315, the base station may identify a downlink shared channel transmission for a second UE communicating with a neighboring base station. The operations of 2315 may be performed according to the methods described herein. In some examples, aspects of the operations of 2315 may be performed as described with reference to Figures 11 to 14 The shared channel components described are implemented.

[0234] At 2320, the base station may determine whether to send a downlink shared channel transmission based on the monitoring. The operations of 2320 may be performed according to the methods described herein. In some examples, aspects of the operations of 2320 may be performed as described with reference to Figures 11 to 14 The shared channel components described are implemented.

[0235] Fig.24 A flow chart illustrating a method 2400 for supporting air interference coordination according to aspects of the present disclosure is shown. The operations of the method 2400 may be implemented by a base station 105 or a component thereof as described herein. For example, the operations of the method 2400 may be implemented by a base station 105 or a component thereof as described herein. Figures 11 to 14 In some examples, the base station may execute an instruction set to control the functional units of the base station to perform the functions described herein. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described herein.

[0236] At 2405, the base station may identify that the neighboring base station is a potential interfering base station for a UE communicating with the serving base station. The operations of 2405 may be performed according to the methods described herein. In some examples, aspects of the operations of 2405 may be performed as described with reference to Figures 11 to 14 The victim identifier described is executed.

[0237] At 2410, the base station may monitor interference coordination messages from the UE based on the identification. The operations of 2410 may be performed according to the methods described herein. In some examples, aspects of the operations of 2410 may be performed as described with reference to Figures 11 to 14 The interference message monitor described is implemented.

[0238] At 2415, the base station may receive an interference coordination message from the UE based on the monitoring. The operations of 2415 may be performed according to the methods described herein. In some examples, aspects of the operations of 2415 may be performed as described with reference to Figures 11 to 14 The interference message monitor described is implemented.

[0239] At 2420, the base station may avoid sending a downlink shared channel transmission to a second UE communicating with the neighboring base station based on receiving the interference coordination message. The operations of 2420 may be performed according to the methods described herein. In some examples, aspects of the operations of 2420 may be performed as described with reference to Figures 11 to 14 The shared channel components described are implemented.

[0240] Fig.25 A flow chart illustrating a method 2500 for supporting air interference coordination according to aspects of the present disclosure is shown. The operations of the method 2500 may be implemented by a base station 105 or a component thereof as described herein. For example, the operations of the method 2500 may be implemented by a base station 105 or a component thereof as described herein. Figures 11 to 14 In some examples, the base station may execute an instruction set to control the functional units of the base station to perform the functions described herein. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described herein.

[0241] At 2505, the base station may identify that the neighboring base station is a potential interfering base station for a UE communicating with the serving base station. The operations of 2505 may be performed according to the methods described herein. In some examples, aspects of the operations of 2505 may be performed as described with reference to Figures 11 to 14 The victim identifier described is executed.

[0242] At 2510, the base station may monitor interference coordination messages from the UE based on the identification. The operations of 2510 may be performed according to the methods described herein. In some examples, aspects of the operations of 2510 may be as described with reference to Figures 11 to 14The interference message monitor described is implemented.

[0243] At 2515, the base station may receive an interference coordination message from the UE based on the monitoring. The operations of 2515 may be performed according to the methods described herein. In some examples, aspects of the operations of 2515 may be performed as described with reference to Figures 11 to 14 The interference message monitor described is implemented.

[0244] At 2520, the base station may send a downlink shared channel transmission to a second UE communicating with the neighboring base station based on the UE having a lower priority level than the neighboring base station. The operations of 2520 may be performed according to the methods described herein. In some examples, aspects of the operations of 2520 may be as described with reference to Figures 11 to 14 The shared channel components described are implemented.

[0245] It should be noted that the methods described herein describe possible implementations, and that operations and steps may be rearranged or otherwise modified, and other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0246] Described herein are multiple examples of methods, systems, or devices, including units for implementing the methods or implementing the devices, non-transitory computer-readable media storing instructions executable by one or more processors to cause the one or more processors to implement the methods, and systems including one or more processors and a memory coupled to the one or more processors storing instructions, the instructions being executable by the one or more processors to cause the system or device to implement the methods. It is to be understood that these are only some examples of possible embodiments, and other examples will be apparent to those skilled in the art without departing from the scope of the present disclosure.

[0247] Example 1: A method for communication at a user equipment (UE), comprising: identifying, by a UE communicating with a serving base station, that the UE is a potential victim of interference from a neighboring base station; sending an interference coordination message to the neighboring base station based at least in part on the identification, the interference coordination message requesting modification of one or more transmission parameters at the neighboring base station; and communicating with the serving base station after sending the interference coordination message.

[0248] Example 2: The method according to Example 1 also includes: using the UE's receiving beam to monitor signaling from at least one of the serving base station or the neighboring base station; receiving signaling from both the serving base station and the neighboring base station based at least in part on the monitoring; and identifying that the UE is a potential victim of interference from the neighboring base station based at least in part on the reception.

[0249] Example 3: The method according to Example 1 or 2 also includes: configuring the UE as a potential victim UE based at least in part on the identification, according to the UE receive beam set, the serving base station transmit beam set, and the neighboring base station transmit beam set.

[0250] Example 4: The method according to any of Examples 1 to 3 further includes: receiving an indication from a serving station to send an interference coordination message to a neighboring base station, wherein the UE is identified as a potential victim based at least in part on the indication; and sending the interference coordination message to the neighboring base station in a direction based at least in part on the indication.

[0251] Example 5: The method according to any of Examples 1 to 4 further includes: monitoring signaling from multiple base stations via a receiving beam set, the multiple base stations including a serving base station and a neighboring base station; and determining that the UE is a potential victim UE based at least in part on the monitoring.

[0252] Example 6: The method according to Example 5 also includes: receiving a first signal from a serving base station via a first receiving beam in a receiving beam set based at least in part on monitoring, the first signal being associated with a first transmission configuration indicator (TCI) state or a first synchronization signal block (SSB) of the serving base station; receiving a second signal from a neighboring base station via a first receiving beam in a receiving beam set based at least in part on monitoring, the second signal being associated with a second TCI state or a second SSB of the neighboring base station; and determining that the neighboring base station is a potential interfering base station based at least in part on receiving the first signal and the second signal.

[0253] Example 7: The method according to Example 6 also includes: sending a report to the serving base station based at least in part on determining that the neighboring base station is a potential interfering base station, the report indicating information related to: a neighboring base station, a first TCI state, a second TCI state, a first SSB, a second SSB, a first receive beam, or any combination thereof.

[0254] Example 8: The method of Example 7, wherein the report is sent via radio resource control (RRC) signaling.

[0255] Example 9: The method according to any of Examples 1 to 8 further includes: receiving a downlink control message from a serving base station, the downlink control message indicating a transmission configuration indicator (TCI) status for downlink shared channel transmission; and sending an interference coordination message to a neighboring base station before the downlink shared channel transmission.

[0256] Example 10: The method of Example 9, wherein the downlink control message indicates resources for the interference coordination message and information to be included in the interference coordination message.

[0257] Example 11: The method according to Example 9 also includes: sending the interference coordination message via a beam that is the same as or different from the beam used for downlink shared channel transmission.

[0258] Example 12: The method according to Example 9 also includes: receiving an indication of a beam index for transmission of an interference coordination message via one of radio resource control (RRC) signaling, medium access control (MAC) control element (MAC-CE), or a downlink control message; and sending the interference coordination message via a transmission beam corresponding to the beam index.

[0259] Example 13: The method according to Example 9 also includes: identifying a gap between the transmission of the interference coordination message and the downlink shared channel transmission; and monitoring the resources allocated for the downlink shared channel transmission according to the gap after the transmission of the interference coordination message.

[0260] Example 14: The method of Example 13, wherein the gap is common to the serving base station and the neighboring base station.

[0261] Example 15: The method of Example 13, wherein the gap is preconfigured at the UE, the serving base station, and the neighboring base station.

[0262] Example 16: The method according to Example 13 also includes: receiving an indication of the gap from a serving base station via one of radio resource control (RRC) signaling, medium access control (MAC) control element (MAC-CE), or a downlink control message.

[0263] Example 17: A method according to Example 9, wherein the downlink control message includes downlink control information (DCI) carried via a physical downlink control channel (PDCCH).

[0264] Example 18: The method according to any of Examples 1 to 17 further includes: including an indication of UE priority in the interference coordination message.

[0265] Example 19: An apparatus comprising at least one unit for performing the method according to any of Examples 1 to 18.

[0266] Example 20: An apparatus for wireless communication, comprising: a processor; a memory coupled to the processor; and instructions, the instructions being stored in the memory and executable by the processor to cause the apparatus to perform the method described in any of Examples 1 to 18.

[0267] Example 21: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to any of Examples 1 to 18.

[0268] Example 22: A method for wireless communication at a serving base station, comprising: identifying that a user equipment (UE) communicating with the serving base station is a potential victim of interference from a neighboring base station; and sending a downlink control message to the UE indicating that the UE is a potential victim UE based at least in part on the identification.

[0269] Example 23: The method according to Example 22 also includes: determining that the neighboring base station is a potential interfering base station based at least in part on the identification; and sending a return message to the neighboring base station for configuring the neighboring base station as a potential interfering base station based at least in part on the determination.

[0270] Example 24: The method according to Example 22 or 23 also includes: identifying a set of beam pairs associated with the UE, the serving base station, and the neighboring base station; and identifying that the UE is a potential victim of interference from the neighboring base station based at least in part on the set of beam pairs.

[0271] Example 25: The method according to any of Examples 22 to 24 further includes: receiving a report from a UE, the report indicating information related to: a neighboring base station, a first transmission configuration indicator (TCI) state of a first signal associated with a serving base station, a first synchronization signal block (SSB) of the first signal associated with a serving base station, a second TCI state of a second signal associated with a neighboring base station, a second SSB of a second signal associated with a neighboring base station, a receive beam of the UE, or any combination thereof; and identifying, based at least in part on the report, that the UE is a potential victim of interference from a neighboring base station.

[0272] Example 26: The method according to Example 25 further includes: sending a backhaul message to a neighboring base station indicating that the neighboring base station is a potential interfering base station based at least in part on the report, wherein the backhaul message includes an indication of the potential victim UE and information related to: a second TCI state, a second SSB, a serving base station, a transmission beam associated with the second TCI state or the second SSB, or any combination thereof.

[0273] Example 27: A method according to any of Examples 22 to 26, wherein the downlink control message indicates a transmission configuration indicator (TCI) state for downlink shared channel transmission to the UE, resources for an interference coordination message from the UE, information to be included in the interference coordination message, an indication for the UE to send an interference coordination message to a neighboring base station, or any combination thereof.

[0274] Example 28: A method according to Example 27, wherein the information to be included in the interference coordination message includes a set of time-frequency resources allocated for the transmission of the interference coordination message, the transmission timing for the interference coordination message, an uplink transmission beam index for the interference coordination message, or any combination thereof.

[0275] Example 29: The method according to Example 27 also includes: sending an indication of a beam index for transmission of an interference coordination message via one of radio resource control (RRC) signaling, medium access control (MAC) control element (MAC-CE), or downlink control information (DCI), wherein the beam index is the same as or different from the index of the received beam for downlink shared channel transmission.

[0276] Example 30: The method according to any of Examples 22 to 29 further includes: sending an indication of the gap to the UE via one of radio resource control (RRC) signaling, medium access control (MAC) control element (MAC-CE), or downlink control information (DCI), wherein the gap is common to the serving base station and the neighboring base station and indicates a delay between transmission of the interference coordination message and transmission of the downlink shared channel.

[0277] Example 31: The method according to Example 30 also includes: sending a backhaul message indicating the gap to a neighboring base station.

[0278] Example 32: A method according to any of Examples 22 to 31, wherein the gap between the interference coordination message from the UE and the downlink shared channel transmission from the neighboring base station is a default value configured at the serving base station, the UE, and the neighboring base station.

[0279] Example 33: An apparatus comprising at least one unit for performing the method according to any of Examples 22 to 32.

[0280] Example 34: An apparatus for wireless communication, comprising: a processor; a memory coupled to the processor; and instructions, the instructions being stored in the memory and executable by the processor to cause the apparatus to perform a method according to any of Examples 22 to 32.

[0281] Example 35: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to any of Examples 22 to 32.

[0282] Example 36: A method for wireless communications at a neighboring base station, comprising: identifying that the neighboring base station is a potential interfering base station for a user equipment (UE) communicating with a serving base station; and monitoring interference coordination messages from the UE based at least in part on the identification.

[0283] Example 37: The method according to Example 36 also includes: identifying a downlink shared channel transmission for a second UE communicating with a neighboring base station; and determining whether to send a downlink shared channel transmission based at least in part on monitoring.

[0284] Example 38: The method according to Example 37 also includes: receiving a return message from a serving base station for configuring a neighboring base station as a potential interfering base station based at least in part on the determination; and configuring the neighboring base station as a potential interfering base station based at least in part on the return message.

[0285] Example 39: The method according to Example 37 also includes: receiving a backhaul message from a serving base station indicating the UE as a potential victim UE, the backhaul message including an indication of the following: an interference transmission beam for a neighboring base station, an interference transmission configuration indicator (TCI) status for a neighboring base station, an interference synchronization signal block (SSB) for a neighboring base station, or any combination thereof.

[0286] Example 40: The method according to Example 39 also includes: monitoring interference coordination messages using interference transmission beams; and sending a downlink shared channel transmission to a second UE based at least in part on the absence of interference coordination messages using interference transmission beams during the monitoring period.

[0287] Example 41: The method according to Example 39 also includes: monitoring interference coordination messages using interference transmission beams; and avoiding sending downlink shared channel transmissions to the second UE based at least in part on detecting interference coordination messages using interference transmission beams during monitoring.

[0288] Example 42: The method according to any of Examples 36 to 41 further includes: receiving an indication of a gap from a serving base station, wherein the gap is common to the serving base station and the neighboring base station and indicates a delay between transmission of an interference coordination message and transmission of a downlink shared channel of a second UE for communicating with the neighboring base station.

[0289] Example 43: The method according to any of Examples 36 to 42 further includes: identifying a gap, the gap indicating a delay between the transmission of an interference coordination message and the transmission of a downlink shared channel of a second UE for communicating with a neighboring base station, wherein the gap is a fixed value pre-configured at the serving base station, the UE, and the neighboring base station.

[0290] Example 44: The method according to any of Examples 36 to 43 further includes: receiving an interference coordination message from a UE based at least in part on monitoring, wherein the interference coordination message is received via a beam that is the same as or different from a beam used to transmit a downlink shared channel of a second UE communicating with a neighboring base station.

[0291] Example 45: The method according to any of Examples 36 to 44 further includes: receiving an interference coordination message from a UE based at least in part on monitoring; and sending downlink control information (DCI) to a second UE communicating with a neighboring base station, the DCI indicating cancellation of downlink shared channel transmission for the second UE based at least in part on receiving the interference coordination message.

[0292] Example 46: The method according to any of Examples 36 to 45 further includes: receiving an interference coordination message from a UE based at least in part on monitoring; and avoiding sending a downlink shared channel transmission to a second UE communicating with a neighboring base station based at least in part on receiving the interference coordination message.

[0293] Example 47: The method according to any of Examples 36 to 46 further includes: receiving an interference coordination message from a UE based at least in part on monitoring; and sending a downlink shared channel transmission to a second UE communicating with a neighboring base station based at least in part on the UE having a lower priority level than the neighboring base station.

[0294] Example 48: The method of Example 47, wherein the interference coordination message indicates a priority level of the UE.

[0295] Example 49: The method according to Example 47 also includes: receiving a backhaul message indicating the priority level of the UE from a serving base station.

[0296] Example 50: An apparatus comprising at least one unit for performing the method according to any of Examples 36 to 49.

[0297] Example 51: An apparatus for wireless communication, comprising: a processor; a memory coupled to the processor; and instructions, the instructions being stored in the memory and executable by the processor to cause the apparatus to perform a method according to any of Examples 36 to 49.

[0298] Example 52: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to any of Examples 36 to 49.

[0299] Although aspects of LTE, LTE-A, LTE-A Professional, or NR systems may be described for purposes of example, and LTE, LTE-A, LTE-A Professional, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Professional, or NR networks. For example, the described techniques may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0300] The information and signals described herein may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0301] The various illustrative blocks and modules described in conjunction with the disclosure herein may be implemented or executed using a general purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration).

[0302] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or sent via a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these items. Features that implement the functions may also be physically located at various locations, including being distributed so that parts of the functions are implemented at different physical locations.

[0303] Computer readable medium includes both non-transitory computer storage medium and communication medium, and communication medium includes any medium that promotes the transmission of computer program from one place to another place.Non-transitory storage medium can be any available medium that can be accessed by general-purpose computer or special-purpose computer.By way of example and not limitation, non-transitory computer readable medium can include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage device, or can be used for carrying or storing desired program code unit in the form of instruction or data structure and can be accessed by general-purpose or special-purpose computer or general-purpose or special-purpose processor any other non-transitory medium.In addition, any connection is appropriately referred to as computer readable medium.For example, if software is to send from website, server or other remote source using coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then coaxial cable, optical fiber cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of computer readable medium. As used herein, disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, wherein disks usually reproduce data magnetically, while discs use lasers to reproduce data optically. Combinations of the above are also included within the scope of computer-readable media.

[0304] As used herein (including in the claims), "or" as used in a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of 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). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based at least in part on condition A" can be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on".

[0305] In the accompanying drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference number, the second reference number being used to distinguish between similar components. If only the first reference number is used in the specification, the description applies to any one of the similar components having the same first reference number, without regard to the second reference number or other subsequent reference numbers.

[0306] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations, and do not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "advantageous over other examples." For the purpose of providing an understanding of the described techniques, the detailed description includes specific details. However, these techniques may be implemented without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0307] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is to be given the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment (UE), comprising: identifying, by the UE in communication with the serving base station using a designated transmit beam of the serving base station, that the UE is a potential victim of potential interference from a neighboring base station, wherein the potential interference is due to interference between the designated transmit beam and communications of the neighboring base station with at least one other UE using an interfering transmit beam; transmitting, by the UE based at least in part on the identification, an interference coordination message to be received by the neighboring base station in a direction corresponding to the interfering transmit beam, wherein the interference coordination message requests the neighboring base station to modify communications with at least one other UE using the interfering transmit beam; and Communicating, by the UE after sending the interference coordination message, with the serving base station includes receiving a physical downlink shared channel (PDSCH) transmission on the designated transmit beam of the serving base station.

2. The method according to claim 1, further comprising: monitoring signaling from at least one of the serving base station or the neighboring base station using a receive beam of the UE; receiving signaling from both the serving base station and the neighboring base station based at least in part on the monitoring; as well as The UE is identified as the potential victim of potential interference from the neighboring base station based at least in part on the receiving.

3. The method according to claim 1, further comprising: Based at least in part on the identification, the UE is configured as a potential victim UE according to a UE receive beam set, a serving base station transmit beam set, and a neighboring base station transmit beam set.

4. The method according to claim 1, further comprising: receiving an indication from the serving base station to send the interference coordination message to the neighboring base station, wherein the UE is identified as the potential victim based at least in part on the indication; and The interference coordination message is sent to the neighboring base station in the direction corresponding to the interfering transmit beam based at least in part on the indication.

5. The method according to claim 1, further comprising: monitoring signaling from a plurality of base stations via a set of receive beams, the plurality of base stations including the serving base station and the neighboring base stations; as well as The UE is determined to be a potential victim UE based at least in part on the monitoring.

6. The method according to claim 5, further comprising: Based at least in part on the monitoring, receiving a first signal from the serving base station via a first receive beam in the set of receive beams, the first signal being associated with a first transmission configuration indicator (TCI) state or a first synchronization signal block (SSB) of the serving base station; Based at least in part on the monitoring, receiving a second signal from the neighboring base station via the first receive beam in the set of receive beams, the second signal being associated with a second TCI state or a second SSB of the neighboring base station; as well as The neighboring base station is determined to be a potentially interfering base station based at least in part on receiving the first signal and the second signal.

7. The method according to claim 6, further comprising: A report is sent to the serving base station based at least in part on determining that the neighboring base station is the potential interfering base station, the report indicating information related to: the neighboring base station, the first TCI state, the second TCI state, the first SSB, the second SSB, the first receive beam, or any combination thereof.

8. The method according to claim 1, further comprising: receiving a downlink control message from the serving base station, the downlink control message indicating a transmission configuration indicator (TCI) state for PDSCH transmission; as well as The interference coordination message is sent to the neighboring base station before the PDSCH transmission.

9. The method according to claim 8, wherein: The downlink control message indicates resources used for the interference coordination message and information to be included in the interference coordination message.

10. The method according to claim 8, further comprising: identifying a gap between a transmission of the interference coordination message and a transmission of the PDSCH; as well as Resources allocated for the PDSCH transmission are monitored according to the gap after the transmission of the interference coordination message.

11. The method according to claim 1, further comprising: An indication of UE priority is included in the interference coordination message.

12. A method for wireless communication at a serving base station, comprising: receiving a report from a user equipment (UE) in communication with the serving base station; identifying, based at least in part on the report, that the UE is a potential victim of interference from a neighboring base station; as well as A downlink control message is sent to the UE indicating that the UE is a potential victim UE based at least in part on the identification, wherein the downlink control message indicates a transmission configuration indicator (TCI) state for downlink shared channel transmission to the UE, resources for an interference coordination message from the UE, information to be included in the interference coordination message, an indication for the UE to send the interference coordination message to the neighboring base station, or any combination thereof.

13. The method according to claim 12, further comprising: determining, based at least in part on the identifying, that the neighboring base station is a potentially interfering base station; as well as A backhaul message is sent to the neighboring base station to configure the neighboring base station as the potentially interfering base station based at least in part on the determination.

14. The method according to claim 12, further comprising: Identifying a set of beam pairs associated with the UE, the serving base station, and the neighboring base station; as well as The UE is identified as the potential victim of interference from the neighboring base station based at least in part on the set of beam pairs.

15. The method of claim 12, wherein: The report indicates information related to: the neighboring base station, a first transmission configuration indicator (TCI) state of a first signal associated with the serving base station, a first synchronization signal block (SSB) of the first signal associated with the serving base station, a second TCI state of a second signal associated with the neighboring base station, a second SSB of the second signal associated with the neighboring base station, a receive beam of the UE, or any combination thereof.

16. The method according to claim 15, further comprising: A backhaul message is sent to the neighboring base station based at least in part on the report, indicating that the neighboring base station is a potentially interfering base station, wherein the backhaul message includes an indication of the potential victim UE and information related to: the second TCI state, the second SSB, the serving base station, a transmission beam associated with the second TCI state or the second SSB, or any combination thereof.

17. The method according to claim 12, wherein: The information to be included in the interference coordination message includes a set of time-frequency resources allocated for transmission of the interference coordination message, a transmission timing for the interference coordination message, an uplink transmission beam index for the interference coordination message, or any combination thereof.

18. The method according to claim 12, further comprising: sending an indication of a gap to the UE via one of radio resource control (RRC) signaling, a medium access control (MAC) control element (MAC-CE), or downlink control information (DCI), wherein the gap is common to the serving base station and the neighboring base station and indicates a delay between transmission of an interference coordination message and transmission of a downlink shared channel; and A backhaul message indicating the gap is sent to the neighboring base station.

19. The method according to claim 12, wherein: The gap between the interference coordination message from the UE and the downlink shared channel transmission from the neighboring base station is a default value configured at the serving base station, the UE, and the neighboring base station.

20. A method for wireless communication at a neighboring base station, comprising: identifying that the neighboring base station communicating with a user equipment (UE) using an interfering transmit beam is a potential interfering base station for at least one other UE communicating with the serving base station using a designated transmit beam of a serving base station; monitoring and receiving, by the neighboring base station based at least in part on the identification, an interference coordination message sent by the at least one other UE in a direction corresponding to the interfering transmit beam, wherein the interference coordination message requests the neighboring base station to modify communications with the UE using the interfering transmit beam; as well as A determination is made based at least in part on the interference coordination message whether to send a physical downlink shared channel (PDSCH) transmission to the UE as part of the communication.

21. The method according to claim 20, further comprising: receiving, based at least in part on the determination, a backhaul message from the serving base station to configure the neighboring base station as the potentially interfering base station; as well as The neighboring base station is configured as the potentially interfering base station based at least in part on the backhaul message.

22. The method according to claim 20, further comprising: A backhaul message is received from the serving base station indicating the at least one other UE as a potential victim UE, the backhaul message including an indication of: an interfering transmit beam for the neighboring base station, an interfering transmission configuration indicator (TCI) state for the neighboring base station, an interfering synchronization signal block (SSB) for the neighboring base station, or any combination thereof.

23. The method according to claim 22, further comprising: monitoring the interference coordination message using the interfering transmit beam; as well as The PDSCH transmission is sent to the UE based at least in part on an absence of the interference coordination message using the interfering transmit beam during the monitoring period.

24. The method of claim 22, further comprising: monitoring the interference coordination message using the interfering transmit beam; as well as Avoiding sending the PDSCH transmission to the UE based at least in part on detecting the interference coordination message using the interfering transmit beam during the monitoring.

25. The method of claim 20, further comprising: An indication of a gap is received from the serving base station, wherein the gap is common to the serving base station and the neighboring base station and indicates a delay between transmission of the interference coordination message and transmission of the PDSCH for the UE communicating with the neighboring base station.

26. The method of claim 20, further comprising: A gap is identified, the gap indicating a delay between transmission of the interference coordination message and transmission of the PDSCH for the UE communicating with the neighboring base station, wherein the gap is a fixed value preconfigured at the serving base station, the UE, and the neighboring base station.

27. The method of claim 20, further comprising: receiving the interference coordination message from the at least one other UE based at least in part on the monitoring; as well as The PDSCH transmission is refrained from being sent to the UE in communication with the neighboring base station based at least in part on receiving the interference coordination message.

28. The method of claim 20, further comprising: receiving the interference coordination message from the at least one other UE based at least in part on the monitoring; as well as The PDSCH transmission is sent to the UE in communication with the neighboring base station based at least in part on the at least one other UE having a lower priority level than the neighboring base station.

29. An apparatus for wireless communication at a user equipment (UE), comprising: processor, a memory coupled to the processor; as well as Instructions stored in the processor and executable by the processor to cause the device to perform the following operations: identifying, by the UE communicating with the serving base station using a designated transmit beam of the serving base station, that the UE is a potential victim of potential interference from a neighboring base station due to interference between the designated transmit beam and communications of the neighboring base station with at least one other UE using an interfering transmit beam; transmitting, by the UE based at least in part on the identification, an interference coordination message to be received by the neighboring base station in a direction corresponding to the interfering transmit beam, wherein the interference coordination message requests the neighboring base station to modify communications with at least one other UE using the interfering transmit beam; and Communicating, by the UE, with the serving base station after sending the interference coordination message includes receiving a physical downlink shared channel (PDSCH) transmission on the designated transmit beam of the serving base station.

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