Measurement reporting technology for wireless communication systems

Abstract

Methods, systems, and devices for wireless communication at a first wireless node in a wireless communication system are described. The technology can enable a first wireless node (e.g., an integrated access and backhaul (IAB) node in an IAB system) to establish a communication link with a second wireless node. The first wireless node can receive an interference signal from an interference source wireless node via a receive beam of the first wireless node. The first wireless node can perform interference measurements of the interference signal at the first receive beam. The first wireless node can send a report indicating the interference measurement to the second wireless node. The second wireless node can schedule communications based on the interference measurement. In some examples, the report can indicate one or more parameters of the interference signal. In some examples, the report can correspond to one or more beams.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. patent application No. 17 / 156,208, entitled “MEASUREMENT REPORT TECHNIQUES FOR WIRELESS COMMUNICATIONS SYSTEMS,” filed by LUO et al. on January 22, 2021, which U.S. patent application claims priority to U.S. provisional patent application No. 17 / 156,208, entitled “MEASUREMENT REPORT TECHNIQUES FOR WIRELESS COMMUNICATIONS SYSTEMS,” filed by LUO et al. on January 22, 2020, and the above-mentioned U.S. patent application is assigned to the assignee of this application. Technical Field

[0003] The following relates generally to wireless communications, and more particularly, to measurement reporting techniques for wireless communication systems. 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 can support communication with multiple users by sharing available system resources (e.g., time, frequency and power). Examples of these multiple access systems include fourth generation (4G) systems (e.g., long term evolution (LTE) systems, advanced LTE (LTE-A) systems or LTE-A Pro systems) and fifth generation (5G) systems (which may be referred to as new radio (NR) systems). These systems may employ 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 one or more base stations or one or more network access nodes, each base station or network access node simultaneously supporting communication for multiple communication devices, which may be referred to as user equipment (UE) in other aspects.

[0005] Wireless multiple access technology has been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at municipal, national, regional, and even global levels. An example telecommunication standard is LTE. LTE is designed to improve spectrum efficiency, reduce costs, improve services, utilize new spectrum, and better integrate with other open standards. LTE can use OFDMA on the downlink, single carrier frequency division multiple access (SC-FDMA) on the uplink, and multiple input multiple output (MIMO) antenna technology.

[0006] In some wireless communication systems, one or more wireless devices (e.g., base stations, wireless nodes, UEs) may be subject to interference. For example, a wireless device may use a receive beam to receive communications intended for the wireless device. However, the quality of the communication may be negatively affected by interference (e.g., inter-carrier interference, cross-link interference) from other signals in the wireless communication system. Summary of the invention

[0007] The technology described herein relates to improved methods, systems, devices, and apparatuses that support measurement reporting for wireless communication systems. The described technology may enable a wireless node to establish a connection with another wireless node (e.g., a parent node or a child node in an integrated access and backhaul (IAB) system). The wireless node may perform interference measurements at a receive beam and send a report indicating the interference measurements. Such a report may enable one or more wireless nodes to schedule communications based on interference measurements, which may mitigate the effects of interference while ensuring effective communication. In some examples, a wireless node may be configured to send a report as described herein (e.g., by another wireless node). Additionally or alternatively, a wireless node may select a beam set for reporting interference measurements (e.g., based on a selection criterion). The report may indicate measurement values ​​and corresponding beams, as well as other examples of information as described herein.

[0008] A method of wireless communication at a first wireless node in a wireless communication system is described. The method may include establishing a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is a parent node or a child node of the first wireless node, receiving an interference signal from an interference source wireless node in the wireless communication system via a first receive beam of the first wireless node, performing interference measurement of the interference signal at the first receive beam, and sending a report indicating the interference measurement to the second wireless node.

[0009] An apparatus for wireless communication at a first wireless node in a wireless communication system is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the apparatus to establish a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is a parent node or a child node of the first wireless node, receive an interference signal from an interference source wireless node in the wireless communication system via a first receive beam of the first wireless node, perform interference measurement of the interference signal at the first receive beam, and send a report indicating the interference measurement to the second wireless node.

[0010] Another apparatus for wireless communication at a first wireless node in a wireless communication system is described. The apparatus may include means for establishing a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is a parent node or a child node of the first wireless node, receiving an interference signal from an interference source wireless node in the wireless communication system via a first receive beam of the first wireless node, performing interference measurement of the interference signal at the first receive beam, and sending a report indicating the interference measurement to the second wireless node.

[0011] A non-transitory computer-readable medium storing code for wireless communication at a first wireless node in a wireless communication system is described. The code may include instructions executable by a processor to establish a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is a parent node or a child node of the first wireless node, receive an interference signal from an interference source wireless node in the wireless communication system via a first receive beam of the first wireless node, perform interference measurement of the interference signal at the first receive beam, and send a report indicating the interference measurement to the second wireless node.

[0012] A method for wireless communication at a first wireless node in a wireless communication system is described. The method may include establishing a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is in a parent-child relationship with the first wireless node, receiving a report from the second wireless node indicating an interference measurement corresponding to an interference signal from an interfering source wireless node at a first receive beam of the second wireless node, and scheduling communication with the second wireless node, the interfering source wireless node, or both based on the received report.

[0013] An apparatus for wireless communication at a first wireless node in a wireless communication system is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the apparatus to establish a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is in a parent-child relationship with the first wireless node, receive a report from the second wireless node indicating an interference measurement corresponding to an interference signal from an interference source wireless node at a first receive beam of the second wireless node, and schedule communication with the second wireless node, the interference source wireless node, or both based on the received report.

[0014] Another apparatus for wireless communication at a first wireless node in a wireless communication system is described. The apparatus may include means for establishing a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is in a parent-child relationship with the first wireless node, receiving a report from the second wireless node indicating an interference measurement corresponding to an interference signal from an interfering source wireless node at a first receive beam of the second wireless node, and scheduling communication with the second wireless node, the interfering source wireless node, or both based on the received report.

[0015] A non-transitory computer-readable medium storing code for wireless communication at a first wireless node in a wireless communication system is described. The code may include instructions executable by a processor to establish a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is in a parent-child relationship with the first wireless node, receive a report from the second wireless node indicating an interference measurement corresponding to an interference signal from an interfering source wireless node at a first receive beam of the second wireless node, and schedule communication with the second wireless node, the interfering source wireless node, or both based on the received report. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figures 1 to 3 An example of a wireless communication system supporting measurement reporting techniques for the wireless communication system according to aspects of the present disclosure is shown.

[0017] Figure 4 An example of a process flow supporting measurement reporting techniques for a wireless communication system in accordance with aspects of the present disclosure is shown.

[0018] Figure 5 and Figure 6 A block diagram of a device supporting measurement reporting techniques for a wireless communication system in accordance with aspects of the present disclosure is shown.

[0019] Figure 7 A block diagram of a communications manager supporting measurement reporting techniques for a wireless communication system is shown in accordance with aspects of the present disclosure.

[0020] Figure 8

[0013] Diagram of a system including devices supporting measurement reporting techniques for a wireless communication system in accordance with aspects of the present disclosure is shown.

[0021] Figures 9 to 11

[0013] A flow chart depicting a method of supporting measurement reporting techniques for a wireless communication system in accordance with aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0022] Some wireless communication systems may include a wireless access node (AN) (e.g., a base station) to facilitate wireless communication between a user equipment (UE) and a network. In some cases, an anchor AN may have a high-capacity, wired, backhaul connection (e.g., optical fiber) to the network while communicating with one or more ANs (e.g., relay devices) or UEs, which may be referred to as child nodes. In some examples, an anchor AN may be referred to as a donor node or a parent node. A network that supports communication between a base station and a UE may be referred to as an access network, while a network that supports communication between multiple base stations may be referred to as a backhaul network. Some wireless communication systems may support both access networks and backhaul networks (e.g., an integrated access and backhaul (IAB) network). In a deployment that supports both access and backhaul on a wireless communication link (e.g., in an IAB network), an IAB node (e.g., a parent node or a child node) may encounter a communication failure. That is, there may be conditions that may cause interference, blocking, etc. to a communication beam (e.g., an active beam of an antenna element). For example, a first wireless node (e.g., a wireless AN, UE, base station, etc. in an IAB network) may use a receive beam to receive communications from a second wireless node. However, the first wireless node may also encounter interference from other signals in the system (e.g., other transmissions on the beam of the second wireless node, transmissions from the beam of a third wireless node, or both). In such an example, the first wireless node may be referred to as a victim wireless node, and the wireless node corresponding to the interfering signal may be referred to as an interference source wireless node. Such interference may cause link failures, communication errors, reduced data rates, etc.

[0023] Thus, the techniques described herein may enable a wireless node (e.g., a victim wireless node) to perform interference measurements for wireless communications and send reports indicating the interference measurements. Such reports may enable one or more wireless nodes to schedule communications based on the interference measurements, which may mitigate or reduce the impact of interference on communications in an IAB system while improving the efficiency of communications. For example, the techniques described herein may utilize parent-child relationships between wireless nodes of an IAB system to send reports without increasing signaling overhead, among other benefits.

[0024] In some examples, the wireless node may be configured to send a report indicating one or more interference measurements. For example, the wireless node may be configured to send reports periodically (e.g., the wireless node may receive a resource or periodic control signaling indicating the resources for sending the report). Additionally or alternatively, the wireless node may send reports aperiodically (e.g., dynamically). For example, the wireless node may receive a request for a report from another node (e.g., a scheduling node such as a parent node or an interference source node), the wireless node may send a report based on one or more trigger conditions (e.g., interference measurements of one or more beams may meet a threshold), or both. In some examples, the wireless node may send reports using layer 1 (L1) signaling, layer 2 (L2) signaling, layer 3 (L3) signaling, and other signaling examples. In some examples, the report may include or indicate one or more parameters corresponding to the interference measurement (e.g., one or more parameters of the interference signal of the interference source wireless node measured at the receiving beam of the victim wireless node). For example, one or more parameters may include transmit power, reference signal received power (RSRP), received signal strength indicator (RSSI), cell identifier (ID), indication of one or more beams, or any combination thereof.

[0025] In some examples, the wireless node may indicate a set of interference measurements in a report based on the selected set of beams. The wireless node may select a beam based on a selection criterion (e.g., configured at the wireless node). For example, the wireless node may select all beam pairs at the wireless node. Additionally or alternatively, the wireless node may select a subset of beam pairs at the wireless node (e.g., a receive beam for a backhaul link, or a receive beam that may be a candidate for scheduling by another wireless node). In some examples, the wireless node may sort the beam pairs based on the interference measurements and select a certain number of beam pairs with corresponding interference measurements that meet a threshold. Thus, the wireless node may be enabled to send a report indicating interference measurements for the selected beam.

[0026] Aspects of the present disclosure are first described in the context of wireless communication systems and process flows. Aspects of the present disclosure are further illustrated and described by reference to apparatus diagrams, system diagrams, and flow diagrams related to measurement reporting techniques for wireless communication systems.

[0027] Figure 1An example of a wireless communication system 100 supporting measurement reporting techniques for a wireless communication system according to aspects of the present disclosure is shown. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a long term evolution (LTE) network, an advanced LTE (LTE-A) network, an LTE-A Pro network, or a new radio (NR) network. In some examples, 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.

[0028] Base stations 105 may be dispersed throughout a geographic area to form wireless communication system 100, and may be devices of different forms or with different 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 one or more communication links 125. Coverage areas 110 may be examples of geographic areas over which base stations 105 and UEs 115 may support communication of signals according to one or more radio access technologies.

[0029] UE 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 stationary or mobile at different times. UE 115 may be a device of different forms or with different capabilities. Figure 1 Some exemplary UEs 115 are shown in FIG. 1. The UEs 115 described herein may be able to 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.

[0030] Base stations 105 may communicate with core network 130, or with each other, or both. For example, base station 105 may interface with core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base stations 105 may communicate with each other directly (e.g., directly between base stations 105), or indirectly (e.g., via core network 130), or both via backhaul links 120 (e.g., via X2, Xn, or other interfaces). In some examples, backhaul links 120 may be one or more wireless links, or include one or more wireless links.

[0031] The one or more base stations 105 described herein may include or may be referred to by a person of ordinary skill in the art as a base station transceiver, a radio base station, an access point, a radio transceiver, a Node B, an eNodeB (eNB), a next generation Node B or a giga-Node B (both may be referred to as gNBs), a Home Node B, a Home eNodeB, or other suitable terms.

[0032] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscription device, or some other suitable 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, or a machine type communication (MTC) device, and in other examples, it may be implemented in various objects such as home appliances, vehicles, or meters, among other examples.

[0033] 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, or relay base stations, among other examples, such as Figure 1 as shown in .

[0034] The UE 115 and the base station 105 can 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 one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, 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 use carrier aggregation or multi-carrier operation to support communication with the UE 115. 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 frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0035] The signal waveform transmitted through the carrier wave 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 using MCM technology, a resource element may be composed of a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period is inversely proportional to the subcarrier spacing. 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. 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 improve the data rate or data integrity used for communicating with UE 115.

[0036] The time interval for the base station 105 or the UE 115 may be expressed as a multiple of a basic time unit. For example, the basic time unit 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. Time intervals of 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).

[0037] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided into (e.g., in the time domain) multiple subframes, and each subframe may be further divided into a number of 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 a number of symbol periods (e.g., depending on the length of the cyclic prefix that precedes each symbol period). In some wireless communication systems 100, a time slot may be further divided into a plurality of mini-time slots that may contain one or more symbols. In addition to 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.

[0038] A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., 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 a burst of a shortened TTI (sTTI)).

[0039] Physical channels may be multiplexed on a carrier according to various techniques. Physical control channels and physical data channels may be multiplexed on a downlink carrier, for example, using one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by a 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, one or more of UEs 115 may monitor or search a control region to obtain control information according to one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. The aggregation level for a control channel candidate may refer to a number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. A search space set may include a common search space set configured to send control information to multiple UEs 115 and a UE-specific search space set for sending control information to a specific UE 115.

[0040] 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 any combination thereof). The term "cell" can refer to a logical communication entity used to communicate with the base station 105 (e.g., via a carrier), and can be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other) used to distinguish neighboring 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, such a cell can cover 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, or an external space between or overlapping geographic coverage areas 110, as well as other examples.

[0041] A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access to a UE 115 with a service subscription and a network provider that supports the macro cell. A small cell may be associated with a base station 105 with lower power 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 through a service subscription with 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 associated with a user in a home or office). A base station 105 may support one or more cells, and may also use one or more component carriers to support communications through one or more cells.

[0042] 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)) that may provide access to different types of devices.

[0043] 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 various geographic coverage areas 110 using the same or different radio access technologies.

[0044] 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 (e.g., mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData)). Support for mission-critical functions can include service priorities, 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.

[0045] In some examples, UE 115 can also 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 can be located within a geographic coverage area 110 of a base station 105. Other UEs 115 in such a group of UEs can be located outside the geographic coverage area 110 of the base station 105, or otherwise unable to receive transmissions from the base station 105. In some examples, a group of UEs 115 communicating via D2D communication can utilize a one-to-many (1:M) system, wherein each UE 115 transmits to each other UE 115 in the group of UEs. In some examples, the base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115 without involving the base station 105.

[0046] 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 (AMF)) for managing access and mobility and at least one user plane entity (UPF) (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) for routing packets or interconnections to an external network. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by a base station 105 associated with the core network 130. User IP packets may be transmitted via user plane entities. User plane entities may provide IP address allocation and other functions. User plane entities may be connected to network operator IP services 150. The network operator IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0047] Some network devices, such as base stations 105, may include subcomponents such as access network entities 140, which may be examples of access node controllers (ANCs). Each access network entity 140 may communicate with UE 115 through one or more 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).

[0048] The wireless communication system 100 can operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally speaking, the region of 300MHz to 3GHz is referred to as the ultra-high frequency (UHF) region or decimeter band, because the length of the wavelength range is from about one decimeter to one meter. UHF waves may be blocked or redirected by buildings and environmental features. However, the UHF waves can fully penetrate the structure for macro cells to provide services to UE 115 located indoors. Compared with the transmission of longer waves using a smaller frequency and a high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz, the transmission of UHF waves can be associated with smaller antennas and shorter ranges (e.g., less than 100 km).

[0049] The wireless communication system 100 can use both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 can adopt 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 use carrier sensing for conflict detection and avoidance. In some examples, operations in unlicensed bands can be combined with component carriers operating in licensed bands (e.g., LAA) based on carrier aggregation configurations. Operations in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, as well as other examples.

[0050] The base station 105 or UE 115 may be equipped with multiple antennas, which may be used to employ techniques 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 combination (e.g., an antenna tower). In some examples, the antennas or antenna arrays associated with the base station 105 may be located at a variety of geographic locations. The base station 105 may have an antenna array with multiple rows and columns of antenna ports, which the base station 105 may use to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays, which may be used to support various MIMO or beamforming operations. In addition or alternatively, the antenna panel may support radio frequency beamforming for signals sent via the antenna ports.

[0051] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to form or direct an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals transmitted via antenna elements of an antenna array so that some signals propagating in a particular direction 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 an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each antenna element may be defined by a set of beamforming weights associated with a particular direction (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other direction).

[0052] The base station 105 or the UE 115 may use beam scanning techniques as part of a beamforming operation. 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 a beam direction for later transmission or reception by the base station 105.

[0053] 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, a beam direction associated with transmissions along a single beam direction may be determined based on signals sent in one or more beam directions. For example, UE 115 may receive one or more signals sent by base station 105 in different directions and may report to base station 105 an indication that UE 115 received a signal having a highest signal quality or otherwise acceptable signal quality.

[0054] In some examples, transmission 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 generate a combined beam for transmission (e.g., from the base station 105 to the UE 115) using a combination of digital precoding or radio frequency beamforming. The UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. The base station 105 may send a reference signal (e.g., a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS)), which may be precoded or unprecoded. 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 codebook, a linear combination type codebook, a port selection type 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).

[0055] A receiving device (e.g., UE 115) may try multiple reception configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from a base station 105. For example, a receiving device may try multiple reception directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as "listening" according to different reception configurations or reception directions. In some examples, a receiving device may use a single reception configuration to receive along a single beam direction (e.g., when receiving a data signal). A single reception configuration may be aligned on a beam direction determined based on listening according to different reception 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).

[0056] The wireless communication system 100 can be a packet-based network operated according to a layered protocol stack. In the user plane, the communication of the bearer or packet data convergence protocol (PDCP) layer can be based on IP. The radio link control (RLC) layer can perform packet segmentation and reorganization to communicate through logical channels. The media access control (MAC) layer can perform priority processing and multiplexing of logical channels to transport channels. The MAC layer can also use error detection technology, error correction technology or both to support retransmission at the MAC layer to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer can provide the establishment, configuration and maintenance of the RRC connection between the base station 105 or the core network 130 of the radio bearer supporting the user plane data of the UE 115. At the physical layer, the transport channel can be mapped to the physical channel.

[0057] As described herein, the devices of the wireless communication system 100 may use techniques for interference measurement reporting. For example, a wireless node (e.g., in an IAB system) may be enabled to perform interference measurements of communications in the wireless communication system 100, and to send a report indicating the interference measurements. Such reports may enable one or more wireless nodes in the wireless communication system 100 to schedule communications based on the interference measurements, which may mitigate the effects of interference while ensuring effective communications. For example, a wireless node may have a parent-child relationship with another wireless node (e.g., a parent wireless node in the wireless communication system 100 may establish a communication link 125 with a child wireless node), which may enable the transmission of one or more reports without incurring additional signaling overhead, as well as other benefits.

[0058] In some examples, the wireless node may be configured to send a report indicating one or more interference measurements (e.g., corresponding to a set of beams selected by the wireless node) via the communication link 125. For example, the wireless node may be configured to send reports periodically (e.g., the wireless node may receive control signaling indicating resources or periods for sending reports). Additionally or alternatively, the wireless node may send reports aperiodically (e.g., dynamically). For example, the wireless node may receive a request for a report from another node (e.g., a scheduling node such as a parent node or an interference source node), the wireless node may send a report based on one or more trigger conditions (e.g., interference measurements of one or more beams may meet a threshold), or both. In some examples, the wireless node may send a report using L1 signaling, L2 signaling, L3 signaling, and other signaling examples. In some examples, the report may include or indicate one or more parameters corresponding to the interference measurement (e.g., one or more parameters of the interference signal of the interference source wireless node measured at the receiving beam of the victim wireless node). For example, the one or more parameters may include: transmit power, RSRP, RSSI, cell ID, an indication of one or more beams (e.g., a selected set of beams), or any combination thereof.

[0059] Figure 2 An example of a wireless communication system 200 supporting confirmation message transmission for resource reservation according to one or more aspects of the present disclosure is shown. The wireless communication system 200 (e.g., an NR system) can supplement the wired backhaul connection (e.g., wired backhaul link 220) by sharing infrastructure and spectrum resources for network access with wireless backhaul link capabilities and providing an IAB network architecture. The wireless communication system 200 may include a core network 205 and a base station 105 or a supported device, which is divided into one or more supporting entities (i.e., functions) for cooperating with communication access to improve wireless backhaul density. The aspects of the supporting functions of the base station 105 may be referred to as wireless IAB nodes, such as donor nodes 210 and relay nodes 215. The wireless communication system 200 may additionally support multiple UEs 115, which may communicate with one or more donor nodes 210, relay nodes 215, or a combination of these devices on the uplink. In some examples, the wireless communication system 200 may implement aspects of the wireless communication system 100.

[0060] The wireless communication system 200 may include one or more Donor nodes 210, which can be docked between a wired network and a wireless network. In some cases, the Donor node 210 may be referred to as an anchor node because the Donor node 210 anchors the wireless network to a wired connection. For example, each Donor node 210 may include at least one wired backhaul link 220 and one or more additional links (e.g., a primary wireless backhaul link 225, a backup wireless backhaul link 230, a wireless access link 235, etc.). As shown herein, the various wireless links in the wireless communication system 200 may also include one or more beams 240 (e.g., beam pairs including receive beams and transmit beams between various wireless nodes). The Donor node 210 may be divided into an associated base station central unit (CU) and a distributed unit (DU) entity, wherein one or more DUs associated with the Donor node 210 may be partially controlled by the associated CU. The CU of the Donor node 210 may host layer 3 (L3) (e.g., radio resource control (RRC), service data adaptation protocol (SDAP), packet data convergence protocol (PDCP), etc.) functions and signaling. In addition, the CU of the donor node 210 can communicate with the core network 205 via a wired backhaul link 220 (e.g., which can be referred to as an NG interface). The DU can host lower layer operations, such as layer 1 (L1) or layer 2 (L2) (e.g., radio link control (RLC), media access control (MAC), physical (PHY) layer, etc.) functions and signaling. The DU entity of the donor node 210 can support a serving cell within a network coverage area based on a connection associated with a primary wireless backhaul link 225 of the IAB network, or a backup wireless backhaul link 230 and a wireless access link 235. The DU of the donor node 210 can control access and backhaul links within the corresponding network coverage, and can provide control and scheduling for subsequent (i.e., child) relay nodes 215 and / or UEs 115. For example, the DU may support an RLC channel connection with the UE 115 (eg, via the wireless access link 235) or with the relay node 215 (eg, via a backhaul link such as the primary wireless backhaul link 225 or the backup wireless backhaul link 230).

[0061] The relay node 215 can be divided into an associated mobile terminal (MT) and a base station DU entity, wherein the MT function of the relay node 215 can be controlled or scheduled by a previous (i.e., parent) IAB node via a wireless backhaul link. The parent node of the relay node 215 (i.e., child node) can be another (predecessor) relay node 215 or a Donor node 210. The MT function can be similar to the function performed by the UE 115 in the system. The relay node 215 may not be directly connected to the wired backhaul 220. Instead, the relay node 215 can be connected to the core network 205 via other IAB nodes (e.g., any number of additional relay nodes 215 and Donor nodes 210) using a wireless backhaul link. The relay node 215 can use the MT function to send an upstream flow in the IAB system (e.g., to the core network 205). In some cases, the DU of the relay node 215 can be partially controlled by a signaling message (e.g., sent via the F1-application protocol (AP)) from the CU entity of the relevant Donor node 210. The DU of the relay node 215 may support a serving cell of a network coverage area. For example, the DU of the relay node 215 may perform the same or similar functions as the DU of the donor node 210, supporting one or more wireless access links 235 for the UE 115, one or more wireless backhaul links for the downstream flow relay node 215, or both.

[0062] The wireless communication system 200 can adopt a relay chain for communication within the IAB network architecture. For example, the UE 115 can communicate with the IAB node, and the IAB node can relay data to the base station CU (e.g., a network entity or network device) or the core network 205 directly or via one or more relay nodes 215. Each relay node 215 may include a primary wireless backhaul link 225 for relaying data upstream or receiving information from the base station CU or the core network 205. In some cases, the relay node 215 may additionally include one or more backup wireless backhaul links 230 (e.g., for redundant connections or improved robustness). If the primary wireless backhaul link 225 fails (e.g., due to interference, a failure at the connected IAB node, movement of the IAB node, maintenance at the IAB node, etc.), the relay node 215 can utilize the backup wireless backhaul link 230 for backhaul communication within the IAB network. The first or primary wireless backhaul link 225 can be associated with a coverage area, and the MT function can be controlled or scheduled by the first parent node. One or more auxiliary backhaul links (e.g., backup wireless backhaul links 230) may be associated with non-co-located coverage areas and controlled or scheduled by one or more parent nodes. Each of the primary backhaul connection and one or more auxiliary connections may support spectrum capabilities to provide network communications through one or more RATs. One or more IAB nodes may further support base station DU entities and may support multiple backhaul and wireless access links within a relay chain. The DU entity may control or schedule descendant relay nodes 215 and UE 115 within the IAB network (e.g., downstream in the IAB network) via configured backhaul and wireless access links. That is, the relay node 215 may act as a relay between the Donor node 210 and one or more descendant devices (e.g., other relay nodes 215, UE 115, etc.) in two communication directions based on the established backhaul and access connections.

[0063] The operations performed by the wireless devices in the wireless communication system 200 may be static or dynamic. For example, in a dynamic IAB system, the wireless device may function as a donor node 210, a relay node 215, a parent node, a child node, or any combination of these. In some cases, the wireless device may dynamically switch between different roles in the IAB system (e.g., based on configuration, channel conditions, neighboring devices, etc.). In other cases, the wireless device may simultaneously function as multiple different roles (e.g., a single wireless device, such as a base station 105 or a UE 115, may function as a parent node for one wireless device and a child node for another wireless device).

[0064] In some examples, there may be interference between one or more communications of the wireless communication system 200. As an illustrative example, a wireless node (e.g., a relay node 215, a donor node 210, or a UE 115) may receive or send communications using one or more beams 240 corresponding to a communication link (e.g., a primary wireless backhaul link 225, a backup wireless backhaul link 230, a wireless access link 235, etc.). For example, a wireless node may use a receive beam 240-b to receive a signal carried by a transmit beam 240-a. In such an example, the transmit beam 240-a may be referred to as a service beam (e.g., carrying a signal intended for a wireless node). However, other communications in the wireless communication system 200 may interfere with the reception of the signal of the transmit beam 240-a. For example, transmit beams 240-c, 240-d, 240-e, or any combination thereof may be picked up by the receive beam 240-b, which may result in relatively inefficient communications.

[0065] As described herein, a device (e.g., relay node 215, donor node 210, CU, DU, or a combination thereof) of the wireless communication system 200 may use techniques for interference measurement reporting. For example, a wireless node (e.g., relay node 215, donor node 210, or UE 115) may be enabled to perform interference measurements of communications in the wireless communication system 200 (e.g., interference signals of transmit beams 240-c, 240-d, 240-e, etc. at receive beam 240-b), and to send a report indicating the interference measurements. Such a report may enable one or more wireless nodes in the wireless communication system 200 to schedule communications based on the interference measurements, which may mitigate the effects of interference while ensuring effective communications.

[0066] In some examples, the wireless node may be configured to send a report indicating one or more interference measurements (e.g., corresponding to a set of beams 240 selected by the wireless node). For example, the wireless node may be configured to send reports periodically (e.g., the wireless node may receive control signaling indicating resources or periods for sending reports). Additionally or alternatively, the wireless node may send reports aperiodically (e.g., dynamically). For example, the wireless node may receive a request for a report from another node (e.g., a scheduling node such as a parent node or an interference source node), the wireless node may send a report based on one or more trigger conditions (e.g., interference measurements of one or more beams may meet a threshold), or both. In some examples, the wireless node may send reports using L1 signaling, L2 signaling, L3 signaling, and other signaling examples. In some examples, the report may include or indicate one or more parameters corresponding to the interference measurement (e.g., one or more parameters of the interference signal of the interference source wireless node measured at the receiving beam of the victim wireless node). For example, the one or more parameters may include transmit power, RSRP, RSSI, cell ID, an indication of one or more beams (e.g., a selected beam set), or any combination thereof.

[0067] Figure 3 An example of a wireless communication system 300 supporting measurement reporting techniques according to one or more aspects of the present disclosure is shown. The wireless communication system 300 may implement aspects of the wireless communication system 100 or the wireless communication system 200. For example, the wireless communication system 300 may include one or more wireless devices (e.g., wireless IAB nodes), such as the core network 205-a, the donor node 210, the relay node 215, the UE 115, and other examples of devices and aspects of the wireless communication systems 100 and 200. In general, the wireless communication system 300 shows illustrative examples of various interference scenarios for communication between wireless devices.

[0068] The wireless communication system 300 may support communication between various wireless nodes (e.g., core network 205-a, one or more donor nodes 210, relay node 215, or UE 115). For example, the various wireless nodes may use one or more backhaul links 305 or access links 310 to send signals (e.g., via transmit beams at the wireless nodes) or receive signals (e.g., via receive beams at the wireless nodes), which may be as described herein with reference to Figure 2An example of a primary wireless backhaul link 225, or a backup wireless backhaul link 230, and a wireless access link 235 is described. In some examples, one or more wireless nodes may be subjected to interference 315, for example, at one or more receive beams of the wireless node. Although the interference 315 is received at the antennas of child nodes (e.g., relay nodes 215-b, 215-d, 215-f, and 215-i) for clarity of illustration, it should be understood that the interference 315 may be received at one or more parent nodes (e.g., relay nodes 215-a, 215-c, 215-e, 215-g, and 215-h) or a grandparent node (e.g., donor node 210-a). In some examples, the wireless nodes may implement aspects of time division duplex (TDD) technology (e.g., dynamic TDD or static TDD), spatial division multiplexing (SDM) technology (e.g., SDM technology with cross-IAB nodes, or co-channel diversity combining (DC) with SDM technology, etc.), which may result in cross-link interference (CLI) or inter-carrier interference (ICI) in the wireless communication system 300, as well as other interference examples.

[0069] As an illustrative example, a relay node 215-a (e.g., a parent node or a child node) can establish communication with a UE 115-a (e.g., via an access link 310), and a relay node 215-b can establish communication with a UE 115-b. For example, the relay node 215-b can use a receive beam of the relay node 215-b to receive a signal from the UE 115-b (e.g., via a transmit beam of the UE 115-b). The receive beam of the relay node 215-b can also receive interference 315 from the signal from the relay node 215-a (or from the UE 115-a). For example, the relay node 215-a can send a signal via the transmit beam of the relay node 215-a, and the signal can cause interference 315 at the receive beam of the relay node 215-b. In such an example, the relay node 215-a can be referred to as an interference source wireless node, and the relay node 215-b can be referred to as a victim wireless node.

[0070] In some examples, relay node 215d can be an example of a victim wireless node. For example, a receive beam of relay node 215-d (e.g., receiving a signal via a communication link with UE 115-c) can receive interference 315 from communications between relay node 215-c and donor node 210-a. In some examples, relay node 215-f can be an example of a victim wireless node. A receive beam of relay node 215-f (e.g., receiving a signal via access link 310 from UE 115-d) can receive interference 315 from communications between relay node 215-e and relay node 215-f. That is, relay node 215-e may send a signal to relay node 215-f (e.g., using a transmit beam of relay node 215-e), and a receive beam may receive interference 315 from the signal from relay node 215-e, which may degrade the quality of communication between relay node 215-f and UE 115-d, for example, when the receive beam is paired with a transmit beam of UE 115-d. In some examples, relay node 215-i may be an example of a victim wireless node. For example, relay node 215-i may receive a signal from relay node 215-g using a first receive beam, and receive a signal from relay node 215-h using a second receive beam. However, the signal used for the second receive beam may interfere with the signal used for the first receive beam, and vice versa. In some examples, Figure 3 Some or all of the victim nodes described in 314 may additionally or alternatively receive interference 315 from an aggressor wireless node that does not have a parent-child relationship with the victim node or is not included in the IAB network described herein.

[0071] Although various access link communications and interference 315 are illustrated as being transmitted in one direction for clarity of illustration, in some examples, some or all of the illustrated directions may be reversed or may be directed toward different devices than illustrated. As an illustrative example, relay node 215-b may transmit a signal to UE 115-b using a transmit beam, and a receive beam of relay node 215-a may receive interference 315 based on the signal transmitted to UE 115-b. In such an example, relay node 215-a may be referred to as a victim wireless node, and relay node 215-a may be referred to as a victim wireless node.

[0072] Techniques described herein may enable various devices of the wireless communication system 300 to reduce the impact or likelihood of interference 315. For example, the wireless communication system 300 may implement techniques for interference measurement reporting. Thus, a wireless node (e.g., a victim wireless node) may be enabled to perform interference measurements of communications in the wireless communication system 300 and send a report indicating the interference measurements. Such reporting may enable one or more wireless nodes (e.g., a scheduling wireless node such as a parent wireless node or an interferer wireless node) to schedule communications based on the interference measurements, which may mitigate the impact of the interference 315 while ensuring effective communications.

[0073] As an illustrative example, the relay node 215-i (e.g., as a victim node) may send a report to one or both of the relay nodes 215-g and 215-h (e.g., each of which may be an interference source node), indicating a report of a measurement of a first beam pair (e.g., a receive beam of the relay node 215-i and a transmit beam of the relay node 215-h) or a second beam pair (e.g., a different receive beam of the relay node 215-i and a transmit beam of the relay node 215-g). The relay node 215-g and the relay node 215-h may coordinate communications based on the received reports.

[0074] As another illustrative example, relay node 215-c (e.g., a parent node) can be an example of an interference source node and can send transmissions to donor node 210-a (e.g., a grandparent node), relay node 215-d (e.g., a child node), and relay node 215-b (e.g., a child node). In some examples, relay node 215-d can send a report to relay node 215-c (e.g., indicating a measurement of a receive beam of relay node 215-c and an interfering transmit beam of relay node 215-c). Relay node 215-b can also send a report to relay node 215-c (e.g., indicating a measurement of a receive beam of relay node 215-b and an interfering transmit beam of relay node 215-c), and donor node 210-a can also send a report to relay node 215-c (e.g., indicating a measurement of a receive beam of donor node 210-a and an interfering transmit beam of relay node 215-c). The relay node 215 - c may schedule communications based on the reports (eg, select one or more transmit beams for communications such as SDM communications, avoiding use of one or more reported transmit beams).

[0075] Figure 4An example of a processing flow 400 supporting measurement reporting techniques for a wireless communication system according to one or more aspects of the present disclosure is shown. The processing flow 400 may show an example of interference measurement reporting in a wireless communication system (e.g., an IAB system). For example, the IAB node 405 may be an example of one or more wireless nodes as described herein (e.g., a base station 105, a CU, a DU, a relay node 215, a donor node 210, a UE 115, a parent node, a child node, a victim node, an interference source node, etc.). In some cases, some operations shown as being performed by the IAB node 405-a, the IAB node 405-b, or the IAB node 405-c may be performed by any other IAB node 405 or other wireless device as described herein. In addition, the following alternative examples may be implemented, in which some operations may be performed in a different order than described or not performed at all. In some cases, the operation may include additional functions not mentioned below, or further processes or communications may be added.

[0076] At 410, IAB node 405-a and IAB node 405-b may establish communication. In some examples, IAB node 405-a and IAB node 405-b may have a parent-child relationship (e.g., IAB node 405-a may be a child node of IAB node 405-b, or IAB node 405-a may be a parent node of IAB node 405-b). Communication may be established as part of a parent-child relationship. For example, IAB node 405-a and IAB node 405-b may establish a primary wireless backhaul link 225 for communication, as described herein with reference to Figure 2 As described. IAB node 405-a and IAB node 405-b can communicate using signals and one or more receive beams or transmit beams. For example, IAB node 405-b can use a service transmit beam to send a signal intended for IAB node 405-a. IAB node 405-a can use a receive beam corresponding to a service transmit beam (e.g., a beam pair including a receive beam and a service transmit beam) to receive a signal.

[0077] In some examples, at 415-a, IAB node 405-a may receive interference from IAB node 405-b (e.g., as described in reference to Figure 3 As an illustrative example, the IAB node 405-b may send an interference signal (e.g., in reference to Figure 3In other examples of the interference scenarios described, interference signals intended for another wireless device such as IAB node 405-c, and other interference scenario examples). In such examples, IAB node 405-b may be an example of an interference source wireless node. In some examples, IAB node 405-b may be a parent node or child node of IAB node 405-a. In some cases, the interference signal may be sent via a first transmit beam different from the service transmit beam. In some examples, the interference at 415-a may reduce the communication quality at the receive beam of IAB node 405-a, which may result in relatively poor data rates, communication errors, etc.

[0078] Additionally or alternatively, at 415-b, IAB node 405-a may receive interference from IAB node 405-c. In some examples, IAB node 405-c may not have a parent-child relationship with IAB node 405-a (e.g., IAB node 405-c may be another child node or another parent node of IAB node 405-b, a grandparent node of IAB node 405-a, a wireless node outside the IAB system, and other examples). IAB node 405-c may send one or more interference signals via a second transmit beam of IAB node 405-c, which may cause interference at the receive beam of IAB node 405-a. In some examples, the interference at 415-a may reduce the communication quality at the receive beam of IAB node 405-a, which may result in relatively poor data rates, communication errors, etc.

[0079] At 420, the IAB node 405-a may perform one or more measurements. For example, the IAB node 405-a may perform interference measurements corresponding to the interference at 415-a or the interference at 415-b. The interference measurements may include measurements corresponding to interference signals of a transmit beam (e.g., of the IAB node 405-b or the IAB node 405-c) at a receive beam of the IAB node 405-a. For example, the IAB node 405-a may measure RSRP or RSSI for the interference signal at the receive beam, or the IAB node 405-a may receive a signal from one or more interference source nodes (e.g., the IAB node 405-b or the IAB node 405-c) or measure the transmit power of the signal, which may enable the IAB node 405-a to derive the interference measurement (e.g., RSRP or RSSI).

[0080] In some examples, the IAB node 405-a may perform such interference measurements on a set of interference beam pairs (e.g., beam pairs that do not include one or more service receive beams or service transmit beams between the IAB node 405-a and the IAB node 405-b). For example, the IAB node 405-a may perform interference measurements on a set of interference beams that do not include a service beam represented by a matrix represented by [NTX, NRX]_inf, where NTX may represent the number of transmit beam candidates for supported cells of the interference source node on its MT and DU at the interference source node (e.g., IAB node 405-b or IAB node 405-c), and where NRX may represent the number of receive beam candidates for supported cells of the victim node on its MT and DU at the victim node (e.g., IAB node 405-a). In some examples, the parent node may be the interference source node, and the child node may be the victim node. In such an example, the victim child node may determine interference measurements for all or a subset of the matrix of interference beam pairs represented by [NTX_P, NRX_C]_inf, which may represent a beam set between a child node (e.g., NTX_C) and a parent node (e.g., NTX_P) that does not include a service beam between these nodes. In some examples, the child node may be an interference source node and the parent node may be a victim node. In such an example, the victim parent node may determine interference measurements for all subsets of interference beam pairs represented by [NTX_C, NRX_P]_inf, which may represent a beam set between a child node (e.g., NTX_C) and a parent node (e.g., NTX_P) that does not include a service beam between these nodes. In some examples, there may be a transmit beam and receive beam correspondence relationship at the parent node and the child node (e.g., when the IAB node 405-a and the IAB node 405-b have a parent-child relationship), and the interference measurement may be determined based on an indication or prior knowledge of the transmit power at another node. In some examples, the IAB node 405 - a may generate an interference measurement matrix corresponding to [NTX, NRX]_inf (eg, a matrix of interference measurement results, such as RSSI or RSRP values, for each beam pair of the matrix).

[0081] At 425, the IAB node 405-a may select a beam to include or indicate in the report. For example, the IAB node 405-a may indicate to another IAB node 405 an interference measurement set corresponding to a selected beam set (e.g., an interference beam pair). As an illustrative example, the IAB node 405-a may perform interference measurements for a first beam pair (e.g., a service receive beam of the IAB node 405-a and a first interference transmit beam from the IAB node 405-b) and a second beam pair (e.g., a service receive beam of the IAB node 405-a and a second interference transmit beam from the IAB node 405-c), and may indicate interference measurements for the IAB node 405-b or the IAB node 405-c at 430-a and 430-b, respectively. In some examples, the IAB node 405-a may indicate more or fewer interference measurements based on the selection of the beam set. For example, the IAB node 405-a may select a first beam pair (e.g., based on a selection criterion) and avoid selecting a second beam pair. In such an example, the IAB node 405-a may report (e.g., indicate) interference measurements for the first beam pair and avoid reporting interference measurements for the second beam pair.

[0082] In some examples, the IAB node 405-a may be configured to select a set of beams based on a selection criterion (e.g., via RRC signaling, F1 application protocol (AP) signaling, or pre-configuration of the IAB node 405-a). For example, the IAB node 405-a (e.g., a victim node) may select all beam pairs at the IAB node 405-a based on the selection criterion. In such an example, the IAB node 405-a may include an indication of an interference report for each beam pair into a report (e.g., all measurement reports generated at 420). In some examples, the IAB node 405-a may select a subset of beam pairs at the IAB node 405-a based on the selection criterion. For example, the IAB node 405-a may be configured to select a subset of receive beams of the IAB node 405-a (e.g., a victim node), such as a subset of receive beams for a backhaul link, a subset of receive beams that may be scheduled by an interference source node, a subset of receive beams that may be scheduled by a parent node of the victim node, and other examples. Additionally or alternatively, the IAB node 405-a may select a subset of beam pairs based on a threshold. In some cases, the IAB node 405-a may compare the interference measurement results for each beam pair with a threshold, and include the beam pair in a report based on the comparison. For example, the IAB node 405-a may determine a subset of beam pairs indicating an RSRP or RSSI that satisfies a threshold (e.g., exceeds a threshold or is below a threshold). In some examples, the IAB node 405-a may indicate the maximum number of beam pairs with the highest or lowest interference measurement reports (e.g., the top K beam pairs with relatively high interference or the top K beam pairs with relatively low interference).

[0083] At 430-a, IAB node 405-a may send a report to IAB node 405-b. The report may indicate one or more interference measurements as described herein. Additionally or alternatively, in some examples, at 430-b, IAB node 405-a may send a report to IAB node 405-c. For example, IAB node 405-c may be an example of an interference source wireless node that causes interference at the receive beam of IAB node 405-a, or IAB node 405-c may have a parent-child relationship with IAB node 405-b, and IAB node 405-c may use the report at 430-b to schedule communications to reduce interference at the receive beam of IAB node 405-a. Such reporting to IAB node 405-b or IAB node 405-c may achieve enhanced communications and reduced interference.

[0084] In some examples, the IAB node 405-a may be configured to send reports. For example, the IAB node 405-a may be configured to periodically send reports via RRC signaling or F1 AP signaling, as well as other signaling examples (e.g., the CU may use reference Figure 2 The IAB node 405 - a may be configured by one or more hops as described, such as a parent node forwarding signaling to the IAB node 405 - a . In such an example, the IAB node 405 - a may receive a configuration with configuration information for sending a report (eg, resources, period, etc.).

[0085] In some examples, the IAB node 405-a may send reports non-periodically. For example, the IAB node 405-a may receive a request for a report (e.g., from the IAB node 405-b or the IAB node 405-c) and may send a report based on the request. In some examples, the wireless node sending the request (e.g., the interference source wireless node) may be a parent node and may send the request (e.g., an indication of the request) via a downlink MAC CE, a physical downlink control channel (PDCCH), a DCI, or a combination thereof. In some examples, the wireless node sending the request may be a child node and may send the request via an uplink MAC CE, a physical uplink control channel (PUCCH), a UCI, or a combination thereof.

[0086] In some examples, the IAB node 405-a may send a report based on an event trigger (e.g., an event-triggered aperiodic report). For example, the IAB node 405-a may detect that the result of the interference measurement at 420 meets a threshold (e.g., the beam pair has a relatively low interference measurement below a lower limit, a relatively high interference measurement above an upper limit, or both). In such an example, the IAB node 405-a may determine that the trigger condition is met, and generate or send a report accordingly. For example, the IAB node 405-a may generate an L1 (e.g., PUCCH, physical uplink shared channel (PUSCH), PDCCH, physical downlink shared channel (PDSCH), etc.) report or an L2 (e.g., MAC CE) report based on the threshold met. In some examples, the IAB node 405-a may be a parent node, and may schedule a downlink grant to the IAB node 410-b for transmission of the report. In some examples, the IAB node 405-a may be a child node, and may send an SR to request an uplink grant for transmission of the report.

[0087] In some examples, the report may include or otherwise indicate one or more parameters associated with the interference measurement. For example, the one or more parameters may include one or more measurement values ​​(e.g., RSSI or RSRP values ​​for all or a selected set of beam pairs). The one or more parameters may also include an indication of one or more beams, such as all or a selected set of beam pairs, a set of transmit beams of beam pairs, a set of receive beams of beam pairs, or any combination thereof. For example, a beam may be indicated in a report via an explicit beam index, or a resource index for interference measurement that may be used to derive a beam index (e.g., by IAB node 405-b). In some examples, one or more parameters may indicate a selected interfering transmit beam (e.g., when interference measurements are configured for a specific receive beam on an interfering transmit beam set). In some examples, one or more parameters may include a selected receive beam (e.g., when interference measurements are configured for a specific interfering transmit beam on a receive beam set). In some examples, one or more parameters may indicate both the selected transmit beam and receive beam in the beam pair (e.g., when the interference measurement is configured on an interfering transmit beam set and a receive beam set). In some examples, one or more parameters may include a cell ID associated with a transmit beam (e.g., of IAB node 405-b or IAB node 405-c) or with a receive beam (e.g., of IAB node 405-a). Such a cell ID may enable the reported transmit beam or receive beam to be associated with a cell that is different from the serving cell between wireless nodes, which may enable more accurate interference mitigation techniques (e.g., because the parent IAB node and the child IAB node may serve multiple cells).

[0088] In some examples, the report may be carried via one or more signaling mechanisms. For example, the report may be sent via L2 signaling (e.g., MAC CE). In some examples, the IAB node 405-a may be a parent node and the report may be sent via a downlink MAC CE. In some examples, the IAB node 405-a may be a child node and the report may be sent via an uplink MAC CE. Additionally or alternatively, the report may be sent via L1 signaling (e.g., a physical channel). For example, the IAB node 405-a may be a parent node and the report may be sent via a PDCCH or a PDSCH. In some examples, the IAB node 405-a may be a child node and the report may be sent via a PUCCH or a PUSCH. Additionally or alternatively, the IAB node 405-a may send the report via L3 signaling (e.g., RRC signaling or F1 AP signaling). For example, the IAB node 405-b may be a child node and receive the report indirectly (e.g., via one or more hops) from the parent node or CU. In some examples, IAB node 405 - a may be a child node and may send L3 reports to the CU.

[0089] In some examples, the IAB node 405-a may suppress sending reports. For example, the IAB node 405-a may perform interference measurements opportunistically, and may not yet have determined some or all parameters to be reported (e.g., due to the availability or capabilities of the IAB node 405-a). In such an example, the IAB node 405-a may be configured to send reports (e.g., periodically or aperiodically), and may send an indication that the IAB node 405-a cannot provide a report (e.g., in response to a request for a report). In some other examples, the IAB node 405-a may perform interference measurements and may notify (e.g., to the IAB node 405-b or to the IAB node 405-c) that the IAB node 405-a has a report for transmission. In such an example, the IAB node 405-a may send a report based on receiving a report configuration (e.g., from a CU), an uplink resource (e.g., from a parent node), a request (e.g., from a child node such as an MT), or any combination thereof.

[0090] In some examples, the IAB node 405-a may send other information as part of the report or in addition to the report. For example, the IAB node 405-a may send a channel state information (CSI) report for the serving transmit beam of the IAB node 405-a and an interference measurement report for one or more interference signals of other transmit beams. In some examples, the report may include an indication of the CSI report and an indication of one or more interference measurements (e.g., other transmit beams carrying interference signals). In some other examples, the CSI report may be sent separately from an indication of one or more interference measurements. In some examples, the CSI report may include channel information, such as RSRP, signal-to-noise ratio (SINR), associated resource index (e.g., CSI reference signal (RS) or signal synchronization block index (SSB)), channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), layer indicator (LI), or any combination thereof. The CSI report may be sent periodically (e.g., via PUCCH), semi-continuously (e.g., via PUCCH or PUSCH), or aperiodically (e.g., via PUSCH). In some examples, the CSI report may be sent from a child node (e.g., a child UE or child MT) and a parent IAB node (e.g., DU). Additionally or alternatively, the other information may include a radio resource management (RRM) measurement report (e.g., as part of a handover process in the RRC layer). In some examples, the RRM measurement report may be sent from a child node (e.g., UE or MT) to a CU, and the RRM measurement report may be transparent to the parent node (e.g., DU). The RRM measurement report may include an indication of RSRP, SINR, received signal reception quality (RSRQ), associated cell ID, resource index (e.g., index of CS-RS or SSB), or a combination thereof. The RRM measurement report may be periodic or event-triggered (e.g., the gNB may configure trigger thresholds for various events), and the report may include an uplink RRC message processed in the RRC layer.

[0091] At 435-a, IAB node 405-b may schedule communications based on the reports received at 430-a. For example, IAB node 405-b may schedule communications based on the reports to reduce interference effects at a transmit beam of IAB node 405-a, for example, by avoiding use or adjusting parameters of one or more transmit beams (e.g., an interfering transmit beam of IAB node 405-b or IAB node 405-c, other interfering transmit beams that IAB node 405-b may schedule, or a transmit beam that may be scheduled by IAB node 405-a to IAB node 405-b).

[0092] Additionally or alternatively, at 435-b, IAB node 405-c may schedule communications based on the report received at 430-b. For example, IAB node 405-c may be an interference source node having an interfering transmit beam, and IAB node 405-c may avoid using or adjusting one or more parameters of the interfering transmit beam based on the report indicating the interference measurement of IAB node 405-a. In some examples, IAB node 405-a may send a report to IAB node 405-b, and IAB node 405-b may schedule communications with IAB node 405-c to reduce the impact or likelihood of interference (e.g., when IAB node 405-c is a child node or parent node of IAB node 405-b, as well as other examples).

[0093] Figure 5 A block diagram 500 of a device 505 supporting measurement reporting techniques for a wireless communication system according to aspects of the present disclosure is shown. The device 505 may be an example of aspects of a wireless device as described herein. For example, the device 505 may be an example of a component of a wireless node (e.g., a base station 105, a network entity, a relay node 215, a donor node 210, a UE 115, a parent node, a child node, an IAB node 405, a victim wireless node, an interference source wireless node, or any combination thereof), or a component including the wireless node. The device 505 may include a receiver 510, a communication manager 515, and a transmitter 520. The device 505 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0094] The receiver 510 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 measurement reporting techniques for wireless communication systems, etc.). The information may be passed to other components of the device 505. The receiver 510 may be a reference Figure 8 Examples of aspects of the transceiver 820 are described. The receiver 510 may use a single antenna or a group of antennas.

[0095] The communication manager 515 can establish a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is a parent node or a child node of the first wireless node, receive an interference signal from an interference source wireless node in the wireless communication system via a first receive beam of the first wireless node, perform interference measurement of the interference signal at the first receive beam, and send a report indicating the interference measurement to the second wireless node. The communication manager 515 can also establish a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is a parent-child relationship with the first wireless node, receive a report indicating an interference measurement corresponding to an interference signal from the interference source wireless node at the first receive beam of the second wireless node from the second wireless node, and schedule communication with the second wireless node, the interference source wireless node, or both based on the received report. The communication manager 515 can be an example of aspects of the communication manager 810 described herein.

[0096] The communication manager 515 or its subcomponents may be implemented in hardware, in code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 515 or its subcomponents may be implemented 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 designed to perform the functions described in the present disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof.

[0097] The communication manager 515 or its subcomponents can be physically located in various locations, including being distributed so that the functions are implemented by one or more physical components at different physical locations. In some examples, according to aspects of the present disclosure, the communication manager 515 or its subcomponents can be separate and different components. In some examples, the communication manager 515 or its subcomponents can be combined with one or more other hardware components, including but not limited to input / output (I / O) components according to various aspects of the present disclosure, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof.

[0098] The actions performed by the communication manager 515 as described herein may be implemented to achieve one or more potential advantages. One implementation may enable a wireless device, such as a wireless node, to report interference measurements to another wireless node in a system (e.g., an IAB system). Such reporting may enable interference mitigation techniques (e.g., scheduling based on the reporting), which may enable higher data rates and more efficient communications (e.g., fewer communication errors), among other advantages.

[0099] Based on implementing the reporting as described herein, a processor of a wireless node (e.g., a processor controlling a receiver 510, a communication manager 515, a transmitter 520, or a combination thereof) can reduce the impact or likelihood of interference in a communication system while ensuring relatively efficient communication. For example, the reporting techniques described herein can utilize a parent-child relationship between a victim wireless node and an interference source wireless node to send a report over an established communication link, which can achieve reduced signaling overhead and power savings, among other benefits.

[0100] The transmitter 520 may transmit signals generated by other components of the device 505. In some examples, the transmitter 520 may be co-located with the receiver 510 in a transceiver module. For example, the transmitter 520 may be a reference Figure 8 Examples of aspects of the transceiver 820 are described. The transmitter 520 may use a single antenna or a group of antennas.

[0101] Figure 6 A block diagram 600 of a device 605 supporting measurement reporting techniques for a wireless communication system according to aspects of the present disclosure is shown. The device 605 may be an example of aspects of the device 505 as described herein. For example, the device 605 may be an example of a wireless node (e.g., a base station 105, a network entity, a relay node 215, a donor node 210, a UE 115, a parent node, a child node, an IAB node 405, a victim wireless node, an interference source wireless node, or any combination thereof), or a component including the wireless node. The device 605 may include a receiver 610, a communication manager 615, and a transmitter 650. The device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0102] The receiver 610 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 measurement reporting techniques of wireless communication systems, etc.). The information may be delivered to other components of the device 605. The receiver 610 may be a reference Figure 8 Examples of aspects of the transceiver 820 are described. The receiver 610 may use a single antenna or a group of antennas.

[0103] The communication manager 615 may be an example of aspects of the communication manager 515 as described herein. The communication manager 615 may include a link component 620, a signal receiver 625, a measurement component 630, a reporting component 635, a report receiver 640, and a scheduling component 645. The communication manager 615 may be an example of aspects of the communication manager 810 described herein.

[0104] The link component 620 can establish a communication link with a second wireless node in the wireless communication system, where the second wireless node is a parent node or a child node of the first wireless node.

[0105] The signal receiver 625 may receive an interference signal from an interference source wireless node in the wireless communication system via a first receiving beam of the first wireless node.

[0106] The measurement component 630 can perform interference measurement of the interfering signal at the first receive beam.

[0107] Reporting component 635 may send a report indicating the interference measurement to the second wireless node.

[0108] The link component 620 can establish a communication link with a second wireless node in the wireless communication system, where the second wireless node is in a parent-child relationship with the first wireless node.

[0109] The report receiver 640 may receive a report from a second wireless node indicating an interference measurement corresponding to an interfering signal from an interfering wireless node at a first receive beam of the second wireless node.

[0110] Scheduling component 645 can schedule communications with the second wireless node, the interfering wireless node, or both based on the received reports.

[0111] The transmitter 650 can transmit signals generated by other components of the device 605. In some examples, the transmitter 650 can be co-located with the receiver 610 in a transceiver module. For example, the transmitter 650 can be a reference Figure 8 Examples of aspects of the transceiver 820 are described. The transmitter 650 may use a single antenna or a group of antennas.

[0112] Figure 7 A block diagram 700 of a communication manager 705 supporting measurement reporting techniques for a wireless communication system according to aspects of the present disclosure is shown. The communication manager 705 may be an example of aspects of the communication manager 515, the communication manager 615, or the communication manager 810 described herein. The communication manager 705 may include a link component 710, a signal receiver 715, a measurement component 720, a reporting component 725, a beam selection component 730, a request receiver 735, a threshold component 740, an indication component 745, a report receiver 750, a scheduling component 755, an interference component 760, a signaling component 765, a request transmitter 770, and an indication receiver 775. Each of these modules may be in communication with each other directly or indirectly (e.g., via one or more buses).

[0113] The link component 710 can establish a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is in a parent-child relationship with the first wireless node (e.g., the second wireless node is a parent node or a child node of the first wireless node). In some cases, the second wireless node is an interference source wireless node. In some cases, the interference source wireless node is different from the second wireless node. In some cases, the first wireless node is an interference source wireless node. In some cases, the interference source wireless node is different from the first wireless node. In some cases, the second wireless node is a parent node or a child node of the first wireless node.

[0114] The signal receiver 715 may receive an interference signal from an interference source wireless node in the wireless communication system via a first receive beam of the first wireless node. In some examples, the signal receiver 715 may receive signaling indicating a configuration for the first wireless node, the signaling comprising RRC signaling or F1 AP signaling.

[0115] In some examples, signal receiver 715 may receive a second signal corresponding to a serving transmit beam of a second wireless node, wherein the interfering signal corresponds to a beam different from the serving transmit beam.

[0116] Measuring component 720 can perform interference measurements of the interfering signal at the first receive beam. In some examples, measuring component 720 can avoid performing interference measurements on a second signal corresponding to the serving transmit beam.

[0117] In some examples, the measurement component 720 can determine one or more parameters of the interference signal at the first receive beam, the one or more parameters including transmit power, RSRP, RSSI, cell ID, a beam index of the first receive beam, a beam index of a transmit beam associated with the interference signal, an index of a beam pair including the first receive beam and the transmit beam, or any combination thereof.

[0118] The reporting component 725 may send a report indicating the interference measurement to the second wireless node. In some cases, the report may indicate one or more parameters. In some examples, the reporting component 725 may generate a report indicating the interference measurement based on the selected beam pair set. In some examples, the reporting component 725 may generate an interference measurement matrix corresponding to the beam pair set, wherein the report indicates the interference measurement matrix. In some examples, the reporting component 725 may send the report based on the configuration.

[0119] In some examples, reporting component 725 may send the report using layer 1 signaling, layer 2 signaling, layer 3 signaling, or a combination thereof.

[0120] Report receiver 750 may receive a report from a second wireless node indicating an interference measurement corresponding to an interfering signal from an interfering wireless node at a first receive beam of the second wireless node.

[0121] In some examples, report receiver 750 may receive reports based on a configuration.

[0122] In some examples, report receiver 750 may receive a report from a second wireless node in response to a request.

[0123] In some examples, report receiver 750 may receive the report via layer 1 signaling, layer 2 signaling, layer 3 signaling, or a combination thereof.

[0124] In some cases, the received report indicates one or more parameters of at least the interference signal at a first receive beam, the one or more parameters including transmit power, RSRP, RSSI, cell ID, a beam index of the first receive beam, a beam index of a transmit beam associated with the interference signal, an index of a beam pair comprising the first receive beam and the transmit beam, or any combination thereof.

[0125] In some cases, the received report indicates one or more interference measurements for a set of beam pairs for a second wireless node and an interference source wireless node, wherein the set of beam pairs includes a receive beam set for the second wireless node and a transmit beam set for the interference source wireless node, wherein the receive beam set includes a first receive beam and the transmit beam set includes a transmit beam corresponding to the interference signal.

[0126] Scheduling component 755 can schedule communications with the second wireless node, the interfering wireless node, or both based on the received reports.

[0127] The beam selection component 730 can select a beam pair set of the first wireless node and the interference source wireless node, wherein the beam pair set includes a receive beam set of the first wireless node and a transmit beam set of the interference source wireless node, wherein the receive beam set includes a first receive beam, and the transmit beam set includes a transmit beam corresponding to the interference signal.

[0128] In some examples, beam selection component 730 can select a set of beam pairs based on a configuration.

[0129] In some examples, beam selection component 730 can determine that one or more results of interference measurements for the selected set of beam pairs satisfy a threshold, wherein the results for each of the selected set of beam pairs satisfy the threshold.

[0130] In some examples, beam selection component 730 can cause the value of the result of each of the selected set of beam pairs to be less than or equal to a threshold value.

[0131] In some examples, beam selection component 730 can cause the value of the result of each of the selected beam pair sets to be greater than or equal to a threshold value.

[0132] In some cases, the set of beam pairs includes all possible sets of beam pairs associated with the first wireless node.

[0133] In some cases, the set of beam pairs includes a receive beam subset of the set of receive beams for the first wireless node, wherein the receive beam subset is associated with one or more backhaul links for the first wireless node.

[0134] In some cases, the set of beam pairs includes a receive beam subset of the set of receive beams of the first wireless node, where the receive beam subset is a candidate for scheduling by the interfering source wireless node.

[0135] In some cases, the set of beam pairs includes a receive beam subset of the set of receive beams of the first wireless node, where the receive beam subset is a candidate for scheduling by the second wireless node.

[0136] The request receiver 735 may receive a request for a report from a second wireless node or an interference source wireless node. In some examples, the reporting component 725 may send a report in response to the request. In some examples, the request receiver 735 may receive a request for a report via a downlink MAC CE, a PDCCH, a DCI, or any combination thereof. In some examples, the request receiver 735 may receive a request for a report via an uplink MAC CE, a PUCCH, a UCI, or any combination thereof.

[0137] In some examples, the request receiver 735 may receive an indication from the second wireless node to provide the second report. In some examples, the indication component 745 may send a response to the second wireless node indicating that the first wireless node cannot send the second report.

[0138] Threshold component 740 can determine that the result of the interference measurement satisfies the threshold. In some examples, reporting component 725 can send a report based on the result satisfying the threshold, wherein the report indicates the result of the interference measurement.

[0139] Indicating component 745 may send an indication to the second wireless node that the first wireless node has a report indicating interference measurements available for transmission.

[0140] In some examples, the indicating component 745 can send a response to the second wireless node indicating that the first wireless node is unable to send the second report.

[0141] The interference component 760 can determine an interference measurement matrix corresponding to a set of beam pairs based on the received reports, wherein scheduling communications includes selecting one or more beam pairs in the set of beam pairs based on the interference measurement matrix. In some cases, the set of beam pairs includes all possible sets of beam pairs associated with the second wireless node. In some cases, the set of beam pairs includes a receive beam subset of a receive beam set of the second wireless node, wherein the receive beam subset is associated with one or more backhaul links of the second wireless node. In some cases, the set of beam pairs includes a receive beam subset of a receive beam set of the second wireless node, wherein the receive beam subset is a candidate for scheduling of the interference source wireless node. In some cases, the set of beam pairs includes a receive beam subset of a receive beam set of the second wireless node, wherein the receive beam subset is a candidate for scheduling of the first wireless node.

[0142] The signaling component 765 can receive signaling (e.g., from a CU of the wireless communication system when the first wireless node is a parent node of the second wireless node) to configure the second wireless node to select a set of beam pairs, the signaling comprising RRC signaling or F1 AP signaling. In some examples, the signaling component 765 can forward the signaling to the second wireless node to configure the second wireless node to select a set of beam pairs.

[0143] In some examples, the signaling component 765 may transmit a second signal corresponding to a serving transmit beam of the first wireless node, wherein the interfering signal corresponds to a beam different from the serving transmit beam.

[0144] In some examples, the signaling component 765 can receive signaling indicating a configuration for the second wireless node, the signaling comprising RRC signaling or F1 AP signaling.In some cases, the set of beam pairs does not include a serving transmit beam.

[0145] The request transmitter 770 may send a request for a report to the second wireless node. In some examples, the request transmitter 770 may send a request for a report via a downlink MAC CE, a PDCCH, a DCI, or any combination thereof. In some examples, the request transmitter 770 may send a request for a report via an uplink MAC CE, a PUCCH, a UCI, or any combination thereof. In some examples, the request transmitter 770 may send an indication to the second wireless node regarding providing a second report.

[0146] The indication receiver 775 may receive an indication that the second wireless node has a report indicating an interference measurement available for transmission. In some examples, the indication receiver 775 may receive a response from the second wireless node indicating that the second wireless node cannot send a second report.

[0147] Figure 8 A diagram of a system 800 including a device 805 supporting measurement reporting techniques for a wireless communication system according to various aspects of the present disclosure is shown. Device 805 may be an example of device 505, device 605, or a device as described herein or include components thereof. For example, device 805 may be an example of a wireless node (e.g., base station 105, network entity, relay node 215, donor node 210, UE 115, parent node, child node, IAB node 405, victim wireless node, interference source wireless node, or any combination thereof). Device 805 may include components for two-way voice and data communications, including components for sending and receiving communications, including communication manager 810, I / O controller 815, transceiver 820, antenna 825, memory 830, processor 840, and decoding manager 850. These components may be electronically communicated via one or more buses (e.g., bus 845).

[0148] The communication manager 810 may establish a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is a parent node or a child node of the first wireless node, receive an interference signal from an interference source wireless node in the wireless communication system via a first receive beam of the first wireless node, perform interference measurement of the interference signal at the first receive beam, and send a report indicating the interference measurement to the second wireless node. The communication manager 810 may also establish a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is in a parent-child relationship with the first wireless node, receive a report indicating the interference measurement from the second wireless node, the interference measurement corresponding to an interference signal from the interference source wireless node at the first receive beam of the second wireless node, and schedule communication with the second wireless node, the interference source wireless node, or both based on the received report.

[0149] I / O controller 815 can manage input and output signals for device 805. I / O controller 815 can also manage peripheral devices that are not integrated into device 805. In some cases, I / O controller 815 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 815 can take the form of a physical connection such as a Or other known operating systems such as operating systems. In other cases, I / O controller 815 can represent or interact with a modem, keyboard, mouse, touch screen or similar device. In some cases, I / O controller 815 can be implemented as a part of a processor. In some cases, a user can interact with device 805 via I / O controller 815 or via hardware components controlled by I / O controller 815.

[0150] The transceiver 820 may communicate bidirectionally via one or more antennas, wired or wireless links as described herein. For example, the transceiver 820 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 820 may also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from an antenna.

[0151] In some cases, a wireless device may include a single antenna 825. However, in some cases, the device may have more than one antenna 825, which may be capable of sending or receiving multiple wireless transmissions simultaneously.

[0152] The memory 830 may include random access memory (RAM) and read-only memory (ROM). The memory 830 may store computer-readable, computer-executable code 835, which includes instructions that, when executed, cause the processor to perform various functions described herein. In some cases, the memory 830 may contain, among other things, a basic I / O system (BIOS), which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0153] The processor 840 may include an intelligent hardware device (e.g., a general-purpose processor, a digital signal processor (DSP), a CPU, a microcontroller, an ASIC, a field programmable gate array (FPGA), a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 840 may be configured to operate the memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 840. The processor 840 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 830) to cause the device 805 to perform various functions (e.g., functions or tasks that support measurement reporting techniques for wireless communication systems).

[0154] The code 835 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications at a first wireless node in a wireless communication system. The code 835 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 835 may not be directly executable by the processor 840, but may (e.g., when compiled and executed) cause a computer to perform the functions described herein.

[0155] Fig. 9 A flow chart depicting a method 900 for supporting measurement reporting techniques for a wireless communication system according to various aspects of the present disclosure is shown. The operations of the method 900 may be implemented by a device or component thereof as described herein. For example, the method 900 may be implemented by a device or component thereof as described herein. Figures 5 to 8 The communication manager described herein may be used to perform the operations of method 900. In some examples, the device may execute a set of instructions to control functional elements of the device to perform the functions described herein. Additionally or alternatively, the device may use dedicated hardware to perform various aspects of the functions described herein.

[0156] At 905, the device may establish a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is a parent node or a child node of the first wireless node. The operation of 905 may be performed according to the methods described herein. In some examples, the communication link may be established by referring to Figures 5 to 8 The link components described are used to perform various aspects of the operations of 905.

[0157] At 910, the device may receive an interference signal from an interference source wireless node in a wireless communication system via a first receive beam of a first wireless node. The operation of 910 may be performed according to the methods described herein. In some examples, the operation may be performed by referring to Figures 5 to 8 The signal receiver is described to perform various aspects of the operation of 910.

[0158] At 915, the device may perform interference measurement of the interference signal at the first receive beam. The operation of 915 may be performed according to the methods described herein. In some examples, the reference Figures 5 to 8 The measurement components described are used to perform various aspects of the operation of 915.

[0159] At 920, the device may send a report indicating the interference measurement to the second wireless node. The operations of 920 may be performed according to the methods described herein. In some examples, the Figures 5 to 8 The reporting component is described to perform various aspects of the operation of 920.

[0160] Fig.10 A flow chart depicting a method 1000 for supporting measurement reporting techniques for a wireless communication system according to various aspects of the present disclosure is shown. The operations of the method 1000 may be implemented by a device or component thereof as described herein. For example, the method 1000 may be implemented by a device or component thereof as described herein. Figures 5 to 8 The communication manager described herein may be used to perform the operations of method 1000. In some examples, the device may execute an instruction set to control functional elements of the device to perform the functions described herein. Additionally or alternatively, the device may use dedicated hardware to perform various aspects of the functions described herein.

[0161] At 1005, in a wireless communication system, a device may establish a communication link with a second wireless node, wherein the second wireless node is a parent node or a child node of the first wireless node. The operation of 1005 may be performed according to the methods described herein. In some examples, the operation may be performed by referring to Figures 5 to 8 The described linked components are used to perform various aspects of the operation of 1005.

[0162] At 1010, the device may receive an interference signal from an interference source wireless node in a wireless communication system via a first receive beam of a first wireless node. The operation of 1010 may be performed according to the methods described herein. In some examples, the operation may be performed by referring to Figures 5 to 8 The signal receiver is described to perform various aspects of the operation of 1010.

[0163] At 1015, the device may perform interference measurement of the interference signal at the first receive beam. The operation of 1015 may be performed according to the methods described herein. In some examples, the operation may be performed by referring to Figures 5 to 8 The measurement components are described to perform various aspects of the operation of 1010.

[0164] At 1020, the device may select a beam pair set of the first wireless node and the interference source wireless node, the beam pair set including a receive beam set of the first wireless node and a transmit beam set of the interference source wireless node, wherein the receive beam set includes the first receive beam, and the transmit beam set includes a transmit beam corresponding to the interference signal. The operation of 1020 may be performed according to the method described herein. In some examples, the operation may be performed by referring to Figures 5 to 8 The beam selection components are described to perform aspects of the operations of 1020.

[0165] At 1025, the device may generate a report indicating interference measurements based on the selected set of beam pairs. The operations of 1025 may be performed according to the methods described herein. In some examples, the report may be generated by reference to Figures 5 to 8 The reporting component is described to perform various aspects of the operation of 1025.

[0166] At 1030, the device may send a report indicating the interference measurement to the second wireless node. The operations of 1030 may be performed according to the methods described herein. In some examples, the Figures 5 to 8 The reporting component is described to perform various aspects of the operation of 1030.

[0167] Fig.11 A flow chart depicting a method 1100 for supporting measurement reporting techniques for a wireless communication system according to various aspects of the present disclosure is shown. The operations of the method 1100 may be implemented by a device or component thereof as described herein. For example, the method 1100 may be implemented by a device or component thereof as described herein. Figures 5 to 8The communication manager described herein may be used to perform the operations of method 1100. In some examples, the device may execute a set of instructions to control functional elements of the device to perform the functions described herein. Additionally or alternatively, the device may use dedicated hardware to perform various aspects of the functions described herein.

[0168] At 1105, the device may establish a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is in a parent-child relationship with the first wireless node. The operation of 1105 may be performed according to the methods described herein. In some examples, the operation may be performed by referring to Figures 5 to 8 The described linked components are used to perform various aspects of the operation of 1105.

[0169] At 1110, the device may receive a report indicating an interference measurement from a second wireless node, the interference measurement corresponding to an interference signal from an interference source wireless node at a first receive beam of the second wireless node. The operations of 1110 may be performed according to the methods described herein. In some examples, the device may receive a report indicating an interference measurement from a second wireless node, the interference measurement corresponding to an interference signal from an interference source wireless node at a first receive beam of the second wireless node. Figures 5 to 8 The reporting receiver is described to perform various aspects of the operation of 1110.

[0170] At 1115, the device may schedule communications with the second wireless node, the interfering wireless node, or both based on the received report. The operations of 1115 may be performed according to the methods described herein. In some examples, the communication may be performed by, for example, referring to Figures 5 to 8 The described scheduling components are used to perform various aspects of the operation of 1115.

[0171] It should be noted that the methods described in this application describe possible implementations, and the operations and steps may be rearranged or otherwise modified, and other implementations are possible. In addition, aspects from two or more methods may be combined.

[0172] The following provides an overview of various aspects of the present disclosure:

[0173] Aspect 1: A method for performing wireless communication at a first wireless node in a wireless communication system, comprising: establishing a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is a parent node or a child node of the first wireless node; receiving an interference signal from an interference source wireless node in the wireless communication system via a first receiving beam of the first wireless node; performing interference measurement on the interference signal at the first receiving beam; and sending a report indicating the interference measurement to the second wireless node.

[0174] Aspect 2: A method according to Aspect 1, wherein performing the interference measurement includes: determining one or more parameters of the interference signal at the first receiving beam, the one or more parameters including transmit power, reference signal received power (RSRP), received signal strength indicator (RSSI), cell identifier, beam index of the first receiving beam, beam index of the transmit beam associated with the interference signal, index of a beam pair including the first receiving beam and the transmit beam, or any combination thereof, wherein the report indicates the one or more parameters.

[0175] Aspect 3: The method according to any one of Aspects 1 to 2 also includes: selecting a beam pair set of the first wireless node and the interference source wireless node, the beam pair set including a receiving beam set of the first wireless node and a transmitting beam set of the interference source wireless node, wherein the receiving beam set includes the first receiving beam, and the transmitting beam set includes a transmitting beam corresponding to the interference signal; and, based on the selected beam pair set, generating the report indicating the interference measurement.

[0176] Aspect 4: The method according to aspect 3, wherein generating the report comprises: generating an interference measurement matrix corresponding to the set of beam pairs, wherein the report indicates the interference measurement matrix.

[0177] Aspect 5: The method according to any one of Aspects 3 to 4 further includes: receiving signaling indicating a configuration for a first wireless node, the signaling comprising RRC signaling or Fl application protocol (AP) signaling; and selecting the beam pair set based at least in part on the configuration.

[0178] Aspect 6: The method according to any one of aspects 3 to 5, wherein the set of beam pairs includes all possible sets of beam pairs associated with the first wireless node.

[0179] Aspect 7: A method according to any one of Aspects 3 to 6, wherein selecting the beam pair set includes: determining that one or more results of interference measurement of the selected beam pair set satisfy a threshold, wherein the result of each beam pair in the selected beam pair set satisfies the threshold.

[0180] Aspect 8: A method according to any one of Aspects 3 to 7, wherein the beam pair set includes a receive beam subset of the receive beam set of the first wireless node, wherein the receive beam subset is associated with one or more backhaul links of the first wireless node.

[0181] Aspect 9: A method according to any one of Aspects 3 to 8, wherein the beam pair set includes a receive beam subset of the receive beam set of the first wireless node, wherein the receive beam subset is a candidate for scheduling by the interference source wireless node or the second wireless node.

[0182] Aspect 10: The method according to any one of Aspects 1 to 9 further includes: receiving a second signal corresponding to a serving transmit beam of the second wireless node, wherein the interference signal corresponds to a beam different from the serving transmit beam.

[0183] Aspect 11: The method according to aspect 10 further includes: avoiding performing interference measurement on the second signal corresponding to the serving transmit beam.

[0184] Aspect 12: The method according to any one of Aspects 1 to 11 also includes: receiving signaling indicating a configuration for the first wireless node, the signaling comprising RRC signaling or F1 Application Protocol (AP) signaling; and sending the report based at least in part on the configuration.

[0185] Aspect 13: The method according to any one of Aspects 1 to 12 further includes: receiving a request for the report from the second wireless node or the interference source wireless node; and sending the report in response to the request.

[0186] Aspect 14: The method according to any one of Aspects 1 to 13 further includes: determining that the result of the interference measurement satisfies a threshold; and sending the report at least in part based on the result satisfying the threshold, wherein the report indicates the result of the interference measurement.

[0187] Aspect 15: The method according to any one of aspects 1 to 14 further includes: sending an indication to the second wireless node that the first wireless node has the report indicating the interference measurement available for transmission.

[0188] Aspect 16: The method according to any one of Aspects 1 to 15 also includes: receiving an indication from the second wireless node about providing a second report; and sending a response to the second wireless node indicating that the first wireless node cannot send the second report.

[0189] Aspect 17: A method for performing wireless communication at a first wireless node in a wireless communication system, comprising: establishing a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is in a parent-child relationship with the first wireless node; receiving a report indicating an interference measurement from the second wireless node, the interference measurement corresponding to an interference signal from an interference source wireless node at a first receiving beam of the second wireless node; and, based at least in part on the received report, scheduling communication with the second wireless node, the interference source wireless node, or both.

[0190] Aspect 18: A method according to Aspect 17, wherein the received report indicates one or more parameters of at least the interference signal at the first receive beam, the one or more parameters including transmit power, reference signal received power (RSRP), received signal strength indicator (RSSI), cell identifier, a beam index of the first receive beam, a beam index of a transmit beam associated with the interference signal, an index of a beam pair including the first receive beam and the transmit beam, or any combination thereof.

[0191] Aspect 19: A method according to any one of Aspects 17 to 18, wherein the received report indicates one or more interference measurements for a set of beam pairs of the second wireless node and the interference source wireless node, the beam pair set comprising a receive beam set of the second wireless node and a transmit beam set of the interference source wireless node, wherein the receive beam set comprises the first receive beam, and the transmit beam set comprises a transmit beam corresponding to the interference signal.

[0192] Aspect 20: The method according to Aspect 19 further includes: determining an interference measurement matrix corresponding to the beam pair set based at least in part on the received report, wherein scheduling communications includes selecting one or more beam pairs in the beam pair set based at least in part on the interference measurement matrix.

[0193] Aspect 21: The method according to any one of Aspects 19 to 20 further includes: receiving signaling for configuring the second wireless node to select the beam pair set, the signaling comprising RRC signaling or F1 Application Protocol (AP) signaling.

[0194] Aspect 22: The method according to any one of aspects 19 to 21, wherein the set of beam pairs includes all beam pairs in the set of possible beam pairs associated with the second wireless node.

[0195] Aspect 23: A method according to any one of Aspects 19 to 22, wherein the beam pair set includes a receive beam subset of the receive beam set of the second wireless node, wherein the receive beam subset is associated with one or more backhaul links of the second wireless node.

[0196] Aspect 24: A method according to any one of Aspects 19 to 23, wherein the beam pair set includes a receive beam subset of the receive beam set of the second wireless node, wherein the receive beam subset is a candidate for scheduling by the interference source wireless node.

[0197] Aspect 25: A method according to any one of Aspects 19 to 24, wherein the beam pair set includes a receive beam subset of the receive beam set of the second wireless node, wherein the receive beam subset is a candidate for scheduling by the first wireless node.

[0198] Aspect 26: The method according to any one of Aspects 19 to 25 also includes: sending a second signal corresponding to a serving transmit beam of the first wireless node, wherein the interference signal corresponds to a beam different from the serving transmit beam.

[0199] Aspect 27: The method according to Aspect 26, wherein the set of beam pairs does not include the serving transmit beam.

[0200] Aspect 28: The method according to any one of Aspects 17 to 27 further includes: receiving signaling indicating a configuration for the second wireless node, the signaling comprising RRC signaling or F1 Application Protocol (AP) signaling; and receiving the report based at least in part on the configuration.

[0201] Aspect 29: A device for performing wireless communications at a first wireless node in a wireless communication system, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the device to perform a method according to any one of Aspects 1 to 16.

[0202] Aspect 30: An apparatus for wireless communication at a first wireless node in a wireless communication system, comprising at least one unit for performing the method according to any one of aspects 1 to 16.

[0203] Aspect 31: A non-transitory computer-readable medium storing code for wireless communication at a first wireless node in a wireless communication system, the code comprising instructions executable by a processor to perform the method according to any one of aspects 1 to 16.

[0204] Aspect 32: An apparatus for performing wireless communications at a first wireless node in a wireless communication system, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 17 to 28.

[0205] Aspect 33: An apparatus for wireless communication at a first wireless node in a wireless communication system, comprising at least one unit for performing the method according to any one of aspects 17 to 28.

[0206] Aspect 34: A non-transitory computer-readable medium storing code for wireless communication at a first wireless node in a wireless communication system, the code comprising instructions executable by a processor to perform the method according to any one of aspects 17 to 28.

[0207] All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure, which are known or will be known to those of ordinary skill in the art, are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether the disclosure is clearly stated in the claims. Words such as "module", "mechanism", "element", "device", "component" cannot replace the word "unit". Therefore, a claim element shall not be interpreted as a functional module unless the element is clearly stated using the phrase "unit for..."

[0208] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system are described for purposes of illustration, and LTE, LTE-A, LTE-A Pro, or NR terminology is used in much of the description, the techniques described herein may be applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described 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.

[0209] 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 mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0210] The various exemplary blocks and components described in conjunction with the present disclosure may be implemented or executed by 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, which may be designed to perform the functions described herein. A general purpose processor may be a microprocessor, or the processor may be any processor, controller, microcontroller, or state machine. A 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).

[0211] 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 or transmitted as one or more instructions or codes on a computer-readable medium. Other examples and implementations also fall 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, hardwiring, or any combination thereof. The features that implement the functions may also be physically located in various locations, including being distributed so that parts of the functions are implemented at different physical locations.

[0212] Computer-readable medium includes both non-transitory computer storage medium and communication medium, and the communication medium includes any medium that helps a computer program to be transferred from one location to another.Non-transitory storage medium can be any available medium accessible to a general-purpose computer or a special-purpose computer.Example, but not limitation, non-transitory computer-readable medium can include RAM, 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 in the form of instruction or data structure and can be accessed by a general or special-purpose computer or a general or special-purpose processor.Any connection is appropriately referred to as computer-readable medium.For example, if software uses coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwave to send from a website, server or other remote source, the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave are included in the definition of computer-readable medium. Disks and optical disks used in this application include CDs, laser disks, optical disks, digital versatile disks (DVDs), floppy disks, and Blu-ray disks, wherein disks typically reproduce data magnetically, while optical disks reproduce data optically with lasers. Combinations of the above may also be included within the scope of computer-readable media.

[0213] As used herein, including in the claims, "or" as used in a list of items (e.g., a list of items preceded by a phrase such as "at least one of" or "one or more of") means an inclusive list, so that, for example, a list of at least one of A, B, or C means at least one of A, B, or C, or any combination thereof. Also, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an exemplary step described as "based 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."

[0214] In the accompanying drawings, similar components or features may have the same reference number. In addition, individual components of the same type may be distinguished by a dash following the reference number and a second reference number that distinguishes between similar components. If only the first reference number is used in the specification, the specification is applicable to any of the similar components having the same first reference number, without regard to the second reference number or other subsequent reference numbers.

[0215] The description given herein describes exemplary configurations in conjunction with the accompanying drawings and does not represent all examples that can be implemented or fall within the scope of the claims. The term "example" used herein means "used as an example, instance, or illustration" rather than "preferred" or "better than other examples." The specific implementation includes specific details for the purpose of providing an understanding of the described technology. However, these technologies can 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.

[0216] In order to enable those of ordinary skill in the art to implement or use the present disclosure, the description herein is provided. Various modifications to the present disclosure will be apparent to those of ordinary skill in the art, and the general principles defined herein may also be applicable 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 consistent with the widest range of the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a first wireless node in a wireless communication system, comprising: Establishing a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is a parent node or a child node of the first wireless node; receiving, via a first receiving beam of the first wireless node, an interference signal from a second wireless node in the wireless communication system; performing interference measurements on the interference signal at the first receive beam; and A report indicative of the interference measurement is sent to the second wireless node to cause the second wireless node to avoid utilizing a transmit beam associated with the interfering signal.

2. The method according to claim 1, wherein: Performing the interference measurement includes: One or more parameters of the interference signal are determined at the first receive beam, the one or more parameters comprising transmit power, reference signal received power (RSRP), a received signal strength indicator (RSSI), a cell identifier, a beam index of the first receive beam, a beam index of the transmit beam, an index of a beam pair including the first receive beam and the transmit beam, or any combination thereof, wherein the report indicates the one or more parameters.

3. The method according to claim 1, further comprising: selecting a beam pair set of the first wireless node and the second wireless node, the beam pair set comprising a receive beam set of the first wireless node and a transmit beam set of the second wireless node, wherein the receive beam set comprises the first receive beam, and the transmit beam set comprises the transmit beam; and The report indicative of the interference measurement is generated based on the selected set of beam pairs.

4. The method according to claim 3, wherein: Generating the report includes: An interference measurement matrix corresponding to the set of beam pairs is generated, wherein the report indicates the interference measurement matrix.

5. The method according to claim 3, further comprising: receiving signaling indicating a configuration for the first wireless node, the signaling comprising radio resource control (RRC) signaling or F1 application protocol (AP) signaling; as well as The set of beam pairs is selected based at least in part on the configuration.

6. The method according to claim 3, wherein: The set of beam pairs includes all possible sets of beam pairs associated with the first wireless node.

7. The method according to claim 3, wherein: Selecting the beam pair set includes: It is determined that one or more results of the interference measurement for the selected set of beam pairs satisfy a threshold, wherein the result for each beam pair in the selected set of beam pairs satisfies the threshold.

8. The method according to claim 3, wherein: The set of beam pairs includes a receive beam subset of the set of receive beams for the first wireless node, wherein the receive beam subset is associated with one or more backhaul links of the first wireless node.

9. The method according to claim 3, wherein: The beam pair set includes a receive beam subset of the receive beam set of the first wireless node, wherein the receive beam subset is a candidate for scheduling by the second wireless node.

10. The method according to claim 1, further comprising: A second signal corresponding to a serving transmit beam of the second wireless node is received, wherein the interfering signal corresponds to a beam different from the serving transmit beam.

11. The method according to claim 10, further comprising: Avoid performing interference measurements on the second signal corresponding to the serving transmit beam.

12. The method according to claim 1, further comprising: receiving signaling indicating a configuration for the first wireless node, the signaling comprising radio resource control (RRC) signaling or F1 application protocol (AP) signaling; as well as Based at least in part on the configuration, the report is sent.

13. The method according to claim 1, further comprising: receiving a request for the report from the second wireless node; as well as In response to the request, the report is sent.

14. The method according to claim 1, further comprising: Determining that a result of the interference measurement satisfies a threshold; as well as Based at least in part on the result satisfying the threshold, the report is sent, wherein the report indicates the result of the interference measurement.

15. The method according to claim 1, further comprising: An indication is sent to the second wireless node that the first wireless node has the report indicative of the interference measurement available for transmission.

16. The method according to claim 1, further comprising: receiving an instruction from the second wireless node to provide a second report; as well as A response is sent to the second wireless node indicating that the first wireless node was unable to send the second report.

17. A method for wireless communication at a first wireless node in a wireless communication system, comprising: Establishing a communication link with a second wireless node in the wireless communication system, wherein the second wireless node and the first wireless node are in a parent-child relationship; receiving, from the second wireless node, a report indicating an interference measurement corresponding to an interfering signal from a third wireless node at a first receive beam of the second wireless node to cause the third wireless node, via the first wireless node, to avoid utilizing a transmit beam associated with the interfering signal; and Communications with the second wireless node, the third wireless node, or both are scheduled based at least in part on the received reports.

18. The method according to claim 17, wherein: The received report indicates one or more parameters of at least the interference signal at the first receive beam, the one or more parameters including: transmit power, reference signal received power (RSRP), received signal strength indicator (RSSI), cell identifier, beam index of the first receive beam, beam index of the transmit beam, index of a beam pair including the first receive beam and the transmit beam, or any combination thereof.

19. The method according to claim 17, wherein: The received report indicates one or more interference measurements for a set of beam pairs for the second wireless node and the third wireless node, the set of beam pairs comprising a receive beam set for the second wireless node and a transmit beam set for the third wireless node, wherein the receive beam set comprises the first receive beam and the transmit beam set comprises the transmit beam.

20. The method according to claim 19, further comprising: An interference measurement matrix corresponding to the set of beam pairs is determined based at least in part on the received reports, wherein scheduling communications includes selecting one or more beam pairs in the set of beam pairs based at least in part on the interference measurement matrix.

21. The method of claim 19, further comprising: Signaling is received to configure the second wireless node to select the set of beam pairs, the signaling comprising radio resource control (RRC) signaling or F1 application protocol (AP) signaling.

22. The method according to claim 19, wherein: The set of beam pairs includes all beam pairs in a set of possible beam pairs associated with the second wireless node.

23. The method according to claim 19, wherein: The set of beam pairs includes a receive beam subset of the set of receive beams for the second wireless node, wherein the receive beam subset is associated with one or more backhaul links of the second wireless node.

24. The method according to claim 19, wherein: The beam pair set includes a receive beam subset of the receive beam set of the second wireless node, wherein the receive beam subset is a candidate for scheduling by the third wireless node.

25. The method of claim 19, wherein: The beam pair set includes a receive beam subset of the receive beam set of the second wireless node, wherein the receive beam subset is a candidate for scheduling by the first wireless node.

26. The method of claim 19, further comprising: A second signal is transmitted corresponding to a serving transmit beam of the first wireless node, wherein the interfering signal corresponds to a beam different from the serving transmit beam.

27. The method according to claim 26, wherein: The set of beam pairs does not include the serving transmit beam.

28. The method of claim 17, further comprising: receiving signaling indicating a configuration for the second wireless node, the signaling comprising radio resource control (RRC) signaling or F1 application protocol (AP) signaling; as well as Based at least in part on the configuration, the report is received.

29. An apparatus for wireless communication at a first wireless node in a wireless communication system, comprising: means for establishing a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is a parent node or a child node of the first wireless node; means for receiving an interference signal from a second wireless node in the wireless communication system via a first receive beam of the first wireless node; means for performing interference measurement of the interference signal at the first receive beam; and Means for sending a report indicative of the interference measurement to the second wireless node to cause the second wireless node to avoid utilizing a transmit beam associated with the interfering signal.

30. An apparatus for wireless communication at a first wireless node in a wireless communication system, comprising: a unit for establishing a communication link with a second wireless node in the wireless communication system, wherein the second wireless node is in a parent-child relationship with the first wireless node; means for receiving, from the second wireless node, a report indicating an interference measurement corresponding to an interfering signal from a third wireless node at a first receive beam of the second wireless node to cause the third wireless node, via the first wireless node, to avoid utilizing a transmit beam associated with the interfering signal; and Means for scheduling communications with the second wireless node, the third wireless node, or both based at least in part on the received report.

Images