Interference Measurement Configuration in Wireless Systems

Abstract

Methods, systems, and devices for wireless communications are described. A wireless node may determine a configuration for interference measurement at a first wireless node, the configuration may indicate a set of uplink resources and a beam scanning configuration for an uplink reference signal. Additionally or alternatively, the configuration may indicate one or more resource sets configured for interference measurement. In some cases, the first wireless node may determine a set of transmission beams for an uplink reference signal based on the beam scanning configuration, and the first wireless node may send the uplink reference signal via all of the transmission beams supported by the first wireless node.

Description

[0001] Cross-references

[0002] This patent application claims the benefit of U.S. Provisional Patent Application No. 62 / 964,353, entitled “Interference Measurement Configurations in Wireless Systems,” filed by Abedini et al. on January 22, 2020; and U.S. Patent Application No. 17 / 150,446, entitled “Interference Measurement Configurations in Wireless Systems,” filed by Abedini et al. on January 15, 2021; each of these applications is assigned to the assignee of this application. Technical Field

[0003] The following relates generally to wireless communications, and more particularly, to interference measurement configurations in wireless 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 may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (e.g., long term evolution (LTE) systems, improved 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 further referred to as user equipment (UE)).

[0005] In some wireless communication systems, one or more wireless devices (base stations, wireless nodes, UEs, etc.) may experience 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

[0006] The described technology relates to improved methods, systems, devices and apparatuses for supporting interference measurement configuration in wireless systems. In summary, the described technology provides a child wireless node or an adjacent parent node to measure interference, report interference, and coordinate to reduce interference between the child node and the parent node. Such technology can be applied regardless of whether the child node or the parent node is a victim node (e.g., a node that is interfered with) or an aggressor node (e.g., a node that causes interference). Such interference measurement, reporting, coordination and configuration can enable one or more wireless nodes to schedule communications based on at least one of interference measurement, interference reporting or interference coordination, which may help to mitigate or prevent the impact of intra-node and inter-system interference on communications in an integrated access and backhaul (IAB) system, which can lead to more efficient communication and use of network resources. For example, the technology described herein can utilize the parent-child relationship between wireless nodes of an IAB system to reduce interference between wireless nodes without generating other benefits such as additional signaling overhead.

[0007] In some cases, a wireless node of a wireless communication system may determine a configuration for interference measurement at a first wireless node, which may indicate a set of uplink resources and a beam scanning configuration for an uplink reference signal. The configuration may indicate one or more sets of resources configured for interference measurement, and may be different from a set of resources configured for beam management for the first wireless node. An indication of the configuration may be received, and the indication may specify a sounding reference signal (SRS) configuration for interference measurement, which may be different from an SRS configuration to be used for beam management.

[0008] In some aspects, the first wireless node can determine a set of transmission beams for an uplink reference signal (e.g., SRS) based on the beam scanning configuration, and the first wireless node can send the uplink reference signal via all or a portion of the transmission beams supported by the first wireless node.

[0009] A method of wireless communication at a first wireless node in a wireless communication system is described. The method may include: determining a configuration for interference measurement for the first wireless node, the configuration indicating an uplink resource set for an uplink reference signal for interference measurement and a beam scanning configuration for transmission of the uplink reference signal; determining a transmission beam set for the uplink reference signal based on the beam scanning configuration; and sending the uplink reference signal to a second wireless node in the wireless communication system via the uplink resource set and the transmission beam set according to the beam scanning configuration.

[0010] 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 executable by the processor to cause the apparatus to perform the following operations: determine a configuration for interference measurement for the first wireless node, the configuration indicating an uplink resource set for an uplink reference signal for interference measurement and a beam scanning configuration for transmission of the uplink reference signal; determine a transmission beam set for the uplink reference signal based on the beam scanning configuration; and send the uplink reference signal to a second wireless node in the wireless communication system via the uplink resource set and the transmission beam set according to the beam scanning configuration.

[0011] Another apparatus for wireless communication at a first wireless node in a wireless communication system is described. The apparatus may include a unit for performing the following operations: determining a configuration for interference measurement for the first wireless node, the configuration indicating an uplink resource set for an uplink reference signal for interference measurement and a beam scanning configuration for transmission of the uplink reference signal; determining a transmission beam set for the uplink reference signal based on the beam scanning configuration; and sending the uplink reference signal to a second wireless node in the wireless communication system via the uplink resource set and the transmission beam set according to the beam scanning configuration.

[0012] 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: determine a configuration for interference measurement for the first wireless node, the configuration indicating a set of uplink resources for an uplink reference signal for interference measurement and a beam scanning configuration for transmission of the uplink reference signal; determine a set of transmission beams for the uplink reference signal based on the beam scanning configuration; and send the uplink reference signal to a second wireless node in the wireless communication system via the set of uplink resources and the set of transmission beams according to the beam scanning configuration.

[0013] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for receiving an indication of the configuration for interference measurement from the second wireless node or another wireless node in the wireless communication system.

[0014] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the configuration may be received semi-statically or dynamically.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the indication specifies an SRS configuration for interference measurement that is different from an SRS configuration for beam management.

[0016] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for sending a report indicating that the first wireless node supports use of SRS configuration for interference measurement for the first wireless node.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the report may be sent semi-statically or dynamically.

[0018] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the configuration indicates one or more sets of resources configured for interference measurement for the first wireless node, and the one or more sets of resources are different from a set of resources configured for beam management for the first wireless node.

[0019] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: determining the set of transmission beams as all transmission beams supported by the first wireless node; and sending the uplink reference signal via all of the transmission beams supported by the first wireless node.

[0020] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: identifying a codebook for interference measurement based on the beam scanning configuration, wherein the codebook may be different from a codebook used for other communications performed by the first wireless node.

[0021] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: determining a direction for communication for the first wireless node; determining the transmission beam set based on the direction; and sending the uplink reference signal using the transmission beam set in the direction of communication.

[0022] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the direction may be associated with one or more parent nodes or one or more child nodes of the first wireless node.

[0023] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the direction may be associated with one or more backhaul links of the first wireless node.

[0024] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: sending an indication of a number of transmission beams for beam scanning via the uplink resource set using the transmission beam set.

[0025] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: receiving the configuration for the interference measurement in response to the indication, the configuration allocating resources for the interference measurement based on the number of the transmission beams.

[0026] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the indication may be sent semi-statically or dynamically.

[0027] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: receiving the configuration for interference measurement for the first wireless node, the configuration indicating a resource allocation for SRS resources, the resource allocation indicating one or more consecutive symbols within a time slot for sending the uplink reference signal.

[0028] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: receiving an uplink reference signal configuration for a third wireless node in the wireless communication system; monitoring one or more uplink reference signals from the third wireless node based on the uplink reference signal configuration; and performing interference measurements of the third wireless node based on the one or more uplink reference signals.

[0029] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the uplink reference signal configuration for the third wireless node may be received from the second wireless node or the third wireless node.

[0030] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first wireless node and the second wireless node may be in a parent-child relationship.

[0031] A method of wireless communication at a first wireless node in a wireless communication system is described. The method may include: identifying a configuration for interference measurement for the first wireless node, the configuration indicating a set of uplink resources configured for a second wireless node and a beam scanning configuration for the second wireless node; monitoring the set of uplink resources configured for an uplink reference signal set from the second wireless node via a set of receive beams according to the beam scanning configuration; and performing interference measurement on the uplink reference signal set based on the monitoring.

[0032] 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 executable by the processor to cause the apparatus to perform the following operations: identify a configuration for interference measurement for the first wireless node, the configuration indicating a set of uplink resources configured for a second wireless node and a beam scanning configuration for the second wireless node; monitor the set of uplink resources configured for an uplink reference signal set from the second wireless node via a receive beam set according to the beam scanning configuration; and perform interference measurement on the uplink reference signal set based on the monitoring.

[0033] Another apparatus for wireless communication at a first wireless node in a wireless communication system is described. The apparatus may include means for: identifying a configuration for interference measurement for the first wireless node, the configuration indicating a set of uplink resources configured for a second wireless node and a beam scanning configuration for the second wireless node; monitoring the set of uplink resources configured for an uplink reference signal set from the second wireless node via a set of receive beams according to the beam scanning configuration; and performing interference measurement on the uplink reference signal set based on the monitoring.

[0034] 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: identify a configuration for interference measurement for the first wireless node, the configuration indicating a set of uplink resources configured for a second wireless node and a beam scanning configuration for the second wireless node; monitor the set of uplink resources configured for an uplink reference signal set from the second wireless node via a set of receive beams according to the beam scanning configuration; and perform interference measurement on the set of uplink reference signals based on the monitoring.

[0035] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, means, or instructions for scheduling communications for the first wireless node or a third wireless node based on the interference measurement.

[0036] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, identifying the configuration for interference measurement can include operations, features, units, or instructions for performing the following: receiving an indication of the configuration for interference measurement for the first wireless node from a central unit.

[0037] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: selecting the set of receive beams from receive beams supported by the first wireless node based on a communication direction of the first wireless node.

[0038] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the communication direction corresponds to a parent node or a child node of the first wireless node, or one or more backhaul links associated with the first wireless node.

[0039] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for sending a report indicating a result of the interference measurement to at least one of the second wireless node or a central unit.

[0040] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the configuration indicates a transmission power associated with the uplink reference signal set, and the uplink reference signal set includes one or more SRSs.

[0041] A method of wireless communication at a central unit of a wireless communication system is described. The method may include: sending a configuration for interference management to a first wireless node of the wireless communication system, the configuration indicating an uplink resource set and a beam scanning configuration for an uplink reference signal set; receiving a report indicating interference measurement from a second wireless node according to the configuration; and sending scheduling information to the first wireless node or the second wireless node based on the report, the scheduling information including resource allocation for communication for the first wireless node or the second wireless node.

[0042] An apparatus for wireless communication at a central unit of 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 executable by the processor to cause the apparatus to perform the following operations: send a configuration for interference management to a first wireless node of the wireless communication system, the configuration indicating an uplink resource set and a beam scanning configuration for an uplink reference signal set; receive a report indicating interference measurement from a second wireless node according to the configuration; and send scheduling information to the first wireless node or the second wireless node based on the report, the scheduling information including resource allocation for communication for the first wireless node or the second wireless node.

[0043] Another apparatus for wireless communication at a central unit of a wireless communication system is described. The apparatus may include means for: sending a configuration for interference management to a first wireless node of the wireless communication system, the configuration indicating an uplink resource set and a beam scanning configuration for an uplink reference signal set; receiving a report indicating interference measurement from a second wireless node according to the configuration; and sending scheduling information to the first wireless node or the second wireless node based on the report, the scheduling information including resource allocation for communication for the first wireless node or the second wireless node.

[0044] A non-transitory computer-readable medium storing code for wireless communication at a central unit of a wireless communication system is described. The code may include instructions executable by a processor to: send a configuration for interference management to a first wireless node of the wireless communication system, the configuration indicating an uplink resource set and a beam scanning configuration for an uplink reference signal set; receive a report indicating interference measurement from a second wireless node according to the configuration; and send scheduling information to the first wireless node or the second wireless node based on the report, the scheduling information including resource allocation for communication for the first wireless node or the second wireless node.

[0045] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the configuration indicates a set of receive beams for the second wireless node to be used for the interference measurement.

[0046] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first wireless node may be a child node or a grandchild node of the central unit.

[0047] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the configuration indicates a transmission power associated with the uplink reference signal set, and the uplink reference signal set includes one or more SRSs. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 An example of a wireless communication system supporting interference measurement configuration in a wireless system in accordance with aspects of the present disclosure is shown.

[0049] Figure 2 An example of a wireless communication system supporting interference measurement configuration in a wireless system in accordance with aspects of the present disclosure is shown.

[0050] Figure 3 An example of a wireless communication system supporting interference measurement configuration in a wireless system in accordance with aspects of the present disclosure is shown.

[0051] Figure 4 An example of a process flow supporting interference measurement configuration in a wireless system in accordance with aspects of the present disclosure is shown.

[0052] Figure 5 and 6 A block diagram of a device supporting interference measurement configuration in a wireless system in accordance with aspects of the present disclosure is shown.

[0053] Figure 7 A block diagram of a communication manager supporting interference measurement configuration in a wireless system is shown in accordance with aspects of the present disclosure.

[0054] Figure 8 A diagram of a system including a user equipment (UE) supporting interference measurement configuration in a wireless system is shown in accordance with aspects of the present disclosure.

[0055] Fig. 9 A diagram of a system including a base station supporting interference measurement configuration in a wireless system is shown in accordance with aspects of the present disclosure.

[0056] Fig.10 and 11A block diagram of a device supporting interference measurement configuration in a wireless system in accordance with aspects of the present disclosure is shown.

[0057] Fig.12 A block diagram of a communication manager supporting interference measurement configuration in a wireless system is shown in accordance with aspects of the present disclosure.

[0058] Fig.13 A diagram of a system including a device supporting interference measurement configuration in a wireless system is shown in accordance with aspects of the present disclosure.

[0059] Figures 14 to 21 A flow chart illustrating a method of supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0060] 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., relays) 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 an access network and a backhaul network (e.g., an integrated access and backhaul (IAB) network).

[0061] In a deployment that supports both access and backhaul on a wireless communication link (e.g., in an IAB network), an IAB node (such as a parent node or a child node) may experience 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., other examples of network devices such as wireless AN, UE, base station, etc. in an IAB network) may use a receive beam to receive communication from a second wireless node. In some examples, the first wireless node may be a child node, and the second node may be an adjacent parent node. However, the receive beam may also receive interference from other signals in the system (e.g., other transmission beams of the second wireless node, the transmission beam of the 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 interference signal may be referred to as an aggressor wireless node. Such interference may result in link failure, communication errors, reduced data rates, etc.

[0062] Therefore, the techniques described herein may enable one or both of a child wireless node or an adjacent parent node to more efficiently measure interference, report interference, and coordinate to reduce interference between a child node and a parent node, regardless of whether the child node or the parent node is a victim node or an aggressor node. Such interference measurement, reporting, coordination, and interference measurement configurations may enable one or more wireless nodes to schedule communications based on at least one of interference measurement, interference reporting, or interference coordination, which may mitigate the impact of intra-node and inter-system interference on communications in an IAB system while ensuring efficient communications. As an example, the techniques described herein may utilize parent-child relationships between wireless nodes of an IAB system to reduce interference between wireless nodes without incurring other benefits such as additional signaling overhead.

[0063] In some examples, a wireless node of a wireless communication system may determine a configuration for interference measurement for a first wireless node. For example, the configuration determined by the first wireless node may indicate an uplink resource set and a beam scanning configuration for an uplink reference signal. For example, an uplink reference signal may be used for interference measurement, and the beam scanning configuration may be a beam scanning configuration for transmission of an uplink reference signal. In some examples, the first wireless node may receive the configuration semi-statically or dynamically. Additionally or alternatively, the configuration may indicate one or more resource sets configured for interference measurement. For example, one or more resource sets may be different from a resource set configured for beam management for the first wireless node. In some examples, the first wireless node may receive an indication of a configuration for interference measurement from another node. Additionally or alternatively, the indication of the configuration may specify a sounding reference signal (SRS) configuration for interference measurement. In such an example, the SRS configuration to be used for interference measurement may be different from the SRS configuration to be used for beam management.

[0064] In some examples, the first wireless node may determine a set of transmission beams for an uplink reference signal based on a beam scanning configuration indicated by a configuration determined by the first wireless node. In some examples, the first wireless node may determine that the set of transmission beams may be all transmission beams supported by the first wireless node or the second wireless node. Additionally or alternatively, the first wireless node may send the uplink reference signal via all of the transmission beams supported by the first wireless node.

[0065] In some examples, a first wireless node may send an uplink reference signal to a second wireless node in a wireless communication system. For example, the first wireless node may send an uplink reference signal to the second wireless node via an uplink resource set and via a transmission beam set according to a beam scanning configuration determined by the first wireless node.

[0066] Various aspects of the disclosure are first described in the context of a wireless communication system. Additional aspects of the disclosure are described with reference to process flows. Various aspects of the disclosure are further illustrated by apparatus diagrams, system diagrams, and flow charts relating to measurement reporting techniques for wireless communication systems, and various aspects of the disclosure are described with reference to these diagrams.

[0067] Figure 1 An example of a wireless communication system 100 supporting interference measurement configuration in a wireless 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 improved 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, or communications with low-cost and low-complexity devices, or any combination thereof.

[0068] Base stations 105 may be dispersed throughout a geographic area to form wireless communication system 100, and may be devices of different forms or capabilities. Base stations 105 and UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which UEs 115 and base stations 105 may establish one or more communication links 125. Coverage area 110 may be an example of a geographic area over which base stations 105 and UEs 115 may support transmission of signals in accordance with one or more radio access technologies.

[0069] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices of different forms or with different capabilities. Figure 1 Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein 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.

[0070] The base stations 105 may communicate with the core network 130, or communicate with each other, or perform both operations. For example, the base stations 105 may interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3 or other interfaces). The base stations 105 may communicate with each other directly (e.g., directly between the base stations 105) on the backhaul links 120 (e.g., via X2, Xn or other interfaces), or communicate with each other indirectly (e.g., via the core network 130), or perform both operations. In some examples, the backhaul links 120 may be or include one or more wireless links.

[0071] One or more of the base stations 105 described herein may include or may be referred to by those skilled in the art as a base station transceiver, a wireless base station, an access point, a wireless transceiver, a Node B, an evolved Node B (eNB), a next generation Node B, or a Gigabit Node B (any of which may be referred to as a gNB), a Home Node B, a Home Evolved Node B, or some other appropriate terminology.

[0072] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other appropriate terminology, where a "device" may also be referred to as a unit, a station, a terminal, or a client, among other examples. UE 115 may also include or may be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, among other examples, which may be implemented in various items such as appliances, or vehicles, meters, and among other examples.

[0073] 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, as well as other examples, such as Figure 1 shown.

[0074] The UE 115 and the base station 105 may communicate wirelessly with each other via one or more communication links 125 on one or more carriers. The term "carrier" may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth portion (BWP)) that operates according to 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 to coordinate operations for the carrier, user data, or other signaling. The wireless communication system 100 may support communication with the UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, the UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used with both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers.

[0075] In some examples (e.g., in a carrier aggregation configuration), the carrier may also have acquisition signaling or control signaling to coordinate operations with respect to other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be placed according to a channel grid to be discovered by a UE 115. A carrier may operate in a standalone mode, where a UE 115 performs initial acquisition and connection via a carrier, or a carrier may operate in a non-standalone mode, where a different carrier (e.g., of the same or different radio access technology) is used to anchor the connection.

[0076] The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode) or may be configured to carry both downlink and uplink communications (e.g., in TDD mode).

[0077] A carrier may be associated with a particular bandwidth of a radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as a "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a plurality of determined bandwidths of a carrier for a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). The devices of the wireless communication system 100 (e.g., base station 105, UE 115, or both) may have a hardware configuration that supports communication on a particular carrier bandwidth, or may be configurable to support communication on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 and / or UE 115 that supports simultaneous communication via carriers associated with a plurality of carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., subband, BWP) or all of a carrier bandwidth.

[0078] The signal waveform transmitted on the carrier may be composed of multiple subcarriers (e.g., using multicarrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may include a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and the subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Therefore, the more resource elements received by the UE 115 and the higher the order of the modulation scheme, the higher the data rate for the UE 115 can be. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further increase the data rate or data integrity for communication with the UE 115.

[0079] The basic time unit (which may be referred to as T s =1 / (Δf max ·N f ) seconds sampling period, where Δf max It can represent the maximum supported subcarrier spacing, and N f The time intervals for the base station 105 or the UE 115 may be expressed as multiples of a maximum supported discrete Fourier transform (DFT) size). The time intervals of the communication resources may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0080] 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, the frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into multiple time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include multiple symbol periods (e.g., depending on the length of the cyclic prefix added in front of each symbol period). In some wireless communication systems 100, the time slots may be further divided into multiple micro-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the frequency band of operation.

[0081] A subframe, slot, mini-slot, or 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)).

[0082] Physical channels may be multiplexed on a carrier according to various techniques. For example, one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique may be used to multiplex physical control channels and physical data channels on a downlink carrier. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by a plurality 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 group of UEs 115. For example, one or more of UEs 115 may monitor or search a control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates at one or more aggregation levels arranged in a cascaded manner. The aggregation level for a control channel candidate may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coding information for a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to multiple UEs 115 and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0083] 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., on a carrier), and can be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID) or other identifier) ​​for distinguishing adjacent cells. In some examples, a cell can also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) on which a logical communication entity operates. Depending on various factors (such as the capabilities of the base station 105), the range of such a cell can range from a smaller area (e.g., a structure, a subset of a structure) to a larger area. For example, a cell can be or include a building, a subset of a building, or an external space between or overlapping the geographic coverage area 110, as well as other examples.

[0084] A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 115 with a service subscription to a network provider that supports the macro cell. A small cell may be associated with a lower power base station 105 than a macro cell, and the small cell may operate in the same or different (e.g., licensed, unlicensed) frequency band as the macro cell. A small cell may provide unrestricted access to a UE 115 with a service subscription to a network provider, or may provide restricted access to a UE 115 associated with a small cell (e.g., a UE 115 in a closed subscriber group (CSG), a UE 115 associated with a user in a residence or office). A base station 105 may support one or more cells, and may support the use of one or more component carriers to communicate on one or more cells.

[0085] 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.

[0086] In some examples, the base stations 105 may be mobile and, therefore, provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of base stations 105 provide coverage for respective geographic coverage areas 110 using the same or different radio access technologies.

[0087] The wireless communication system 100 may support synchronous operation or asynchronous operation. For synchronous operation, the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time. For asynchronous operation, the base stations 105 may have different frame timing, and in some examples, transmissions from different base stations 105 may not be aligned in time. The techniques described herein may be used for synchronous operation or asynchronous operation.

[0088] Some UEs 115 (e.g., MTC or IoT devices) may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or base station 105 without human intervention. In some examples, M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application that utilizes the information or presents the information to a person interacting with the application. Some UEs 115 may be designed to collect information or implement automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, climate and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business billing.

[0089] Some UEs 115 may be configured to employ a reduced power consumption operating mode, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception rather than simultaneous transmission and reception). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power conservation techniques for UE 115 include entering a power conservation sleep mode when not engaged in active communications, operating over a limited bandwidth (e.g., in accordance with narrowband communications), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of a carrier, or outside a carrier.

[0090] The wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, the wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE115 can be designed to support ultra-reliable, low-latency or critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private communication or group communication, and can be supported by one or more mission-critical services (such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functions can include prioritization of services, and mission-critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency can be used interchangeably in this article.

[0091] In some examples, UE 115 may also be able to communicate directly with other UE 115 on D2D communication link 135 (e.g., using peer-to-peer (P2P) or device-to-device (D2D) protocols). One or more UE 115 utilizing D2D communication may be within the geographic coverage area 110 of base station 105. Other UE 115 in such a group may be outside the geographic coverage area 110 of base station 105, or otherwise unable to receive transmissions from base station 105. In some examples, groups of UE 115 communicating via D2D communication may utilize a one-to-many (1:M) system, wherein each UE 115 transmits to each other UE 115 in the group. In some examples, base station 105 facilitates scheduling of resources for D2D communication. In other cases, D2D communication is performed between UE 115 without involving base station 105.

[0092] In some systems, the D2D communication link 135 can be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, vehicles can communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these items. Vehicles can send information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system in signaling. In some examples, vehicles in a V2X system can communicate with roadside infrastructure (such as roadside units), or communicate with a network via one or more network nodes (e.g., base station 105) using vehicle-to-network (V2N) communication, or both.

[0093] 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 (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) for routing packets to an external network or interconnecting to an external network. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UE 115 served by a base station 105 associated with the core network 130. User IP packets may be transmitted through a user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to an operator IP service 150. The operator IP service 150 may include access to the Internet, an intranet, an IP multimedia subsystem (IMS), or a packet-switched streaming service.

[0094] Some of the network devices (e.g., 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 the 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).

[0095] The wireless communication system 100 may operate using one or more frequency bands, for example, in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Typically, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, but the waves may be sufficient to penetrate structures for macro cells to provide service to UEs 115 located indoors. Transmissions using UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmissions using smaller frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0096] The wireless communication system 100 may also operate in a super high frequency (SHF) region using a frequency band from 3 GHz to 30 GHz (also referred to as a centimeter band) or in an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) (also referred to as a millimeter band). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between UE 115 and base station 105, and the EHF antennas of the corresponding devices may be even smaller and more closely spaced than UHF antennas. In some examples, this may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may suffer from even greater atmospheric attenuation and shorter distances than SHF or UHF transmissions. The technology disclosed herein may be employed across transmissions using one or more different frequency regions, and the designated use of frequency bands across these frequency regions may differ according to the country or administrative body.

[0097] The wireless communication system 100 can utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 can employ license assisted access (LAA), LTE unlicensed (LTE-U) wireless access technology, or NR technology in an unlicensed band (such as the 5 GHz industrial, scientific, and medical (ISM) band). When operating in an unlicensed radio frequency spectrum band, devices (such as base stations 105 and UEs 115) can employ carrier sensing for conflict detection and avoidance. In some examples, operations in unlicensed bands can be based on a carrier aggregation configuration in combination with component carriers operating in a licensed band (e.g., LAA). Operations in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, as well as other examples.

[0098] 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 assembly, such as an antenna tower. In some examples, the antennas or antenna arrays associated with the base station 105 may be located at different geographical locations. The base station 105 may have an antenna array having multiple rows and columns of antenna ports that the base station 105 may use to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals sent via the antenna ports.

[0099] The base station 105 or UE 115 can use MIMO communication to take advantage of multipath signal propagation and increase spectral efficiency by sending or receiving multiple signals via different spatial layers. Such a technology may be referred to as spatial multiplexing. For example, a transmitting device may send multiple signals via different antennas or different combinations of antennas. Similarly, a receiving device may receive multiple signals via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO technology includes single-user MIMO (SU-MIMO) (where multiple spatial layers are sent to the same receiving device) and multi-user MIMO (MU-MIMO) (where multiple spatial layers are sent to multiple devices).

[0100] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting device or a receiving device (e.g., a base station 105 or 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 can be achieved by combining signals transmitted via antenna elements of an antenna array so that some signals propagating at a specific orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals transmitted via antenna elements may include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each of the antenna elements may be defined by a set of beamforming weights associated with a specific orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other orientation).

[0101] As part of the beamforming operation, the base station 105 or the UE 115 may use beam scanning techniques. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communications with the UE 115. The base station 105 may send some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) multiple times 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 a receiving device (such as the UE 115)) to identify a beam direction for later transmission or reception by the base station 105.

[0102] Base station 105 may transmit some signals (e.g., data signals associated with a particular receiving device (e.g., UE 115)) in a single beam direction (e.g., a direction associated with the receiving device). In some examples, the beam direction associated with transmission along the single beam direction may be determined based on signals transmitted in one or more beam directions. For example, UE 115 may receive one or more of the signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signal received by UE 115 having the highest signal quality or otherwise acceptable signal quality.

[0103] In some examples, transmissions by a device (e.g., by a base station 105 or a UE 115) may be performed using multiple beam directions, and the device may 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 reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)) that may be precoded or not precoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type 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 determine 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).

[0104] When receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from the base station 105, the receiving device (e.g., UE 115) can try multiple reception configurations (e.g., directional listening). For example, the receiving device can try multiple reception directions by receiving via different antenna subarrays, by processing the received signals according to different antenna subarrays, by receiving according to different reception beamforming weight sets applied to the signals received at multiple antenna elements of the antenna array (e.g., different directional listening weight sets), or by processing the received signals according to different reception beamforming weight sets applied to the signals received at multiple antenna elements of the antenna array (any of the above operations may be referred to as "listening" according to different reception configurations or reception directions). In some examples, the receiving device can use a single reception configuration to receive along a single beam direction (e.g., when receiving a data signal). A single receive configuration may be aligned on a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, the highest signal-to-noise ratio (SNR), or otherwise acceptable signal quality based on listening according to multiple beam directions).

[0105] UE 115 and base station 105 can support retransmission of data to increase the possibility that the data is successfully received. Hybrid automatic repeat request (HARQ) feedback is a technology for increasing the possibility that data is correctly received on communication link 125. HARQ can include a combination of error detection (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC) and retransmission (e.g., automatic repeat request (ARQ)). HARQ can improve the throughput at the MAC layer under poor wireless conditions (e.g., low signal and noise conditions). In some examples, the device can support the same time slot HARQ feedback, wherein the device can provide HARQ feedback for data received in the previous symbol in the time slot in a specific time slot. In other cases, the device can provide HARQ feedback in subsequent time slots or according to some other time interval.

[0106] As described herein, the devices of the wireless communication system 100 may use techniques for interference measurement configuration. For example, a wireless node (e.g., in an IAB system) may be enabled to determine a configuration for interference measurement for a wireless node in the wireless communication system 100, and the determined configuration may indicate an uplink resource set and a beam scanning configuration. The wireless node is also enabled to determine a transmission beam set for an uplink reference signal based on the beam scanning configuration, and the wireless node may send the uplink reference signal to another wireless node or another portion of the wireless communication system 100 via the uplink resources and the transmission beam. 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). In an example, due to the existing relationship between the parent wireless node and the child wireless node and the accompanying knowledge that each node has about the other node, the parent-child relationship (e.g., the established communication link 125) may facilitate the determination of the configuration for interference measurement between the parent wireless node and the child wireless node.

[0107] In some examples, a child node of a parent-child relationship within the wireless communication system 100 may receive an indication of a configuration for interference measurement from a parent node of the parent-child relationship via a communication link 125. The child node may receive such an indication semi-statically or dynamically. Additionally or alternatively, the parent node of the parent-child relationship may receive an indication of a configuration for interference measurement from the child node. In some examples, the received indication may specify an SRS configuration for interference measurement that is different from an SRS configuration for beam management. Additionally or alternatively, one of the parent node or the child node may send a report via a communication link 125 or any other type of communication link that indicates that the sending node supports the use of the SRS configuration for interference measurement within the wireless communication system 100.

[0108] Figure 2An example of a wireless communication system 200 that supports interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100.

[0109] The wireless communication system 200 (e.g., NR system) can provide an IAB network architecture by supplementing the wired backhaul connection (e.g., wired backhaul link 220) by sharing the infrastructure and spectrum resources for network access using the wireless backhaul link capability. The wireless communication system 200 may include a core network 205 and a base station 105 or a supported device that is split into one or more supporting entities (i.e., functions) for collaborative communication access to improve wireless backhaul density. Various aspects of the support functions of the base station 105 may be referred to as wireless IAB nodes, such as an IAB donor node 210 (also referred to herein as a donor node 210) and an IAB relay node 215 (also referred to herein as a relay node 215). The wireless communication system 200 may additionally support multiple UEs 115, which may communicate with one or more IAB donor nodes 210, IAB relay nodes 215, or a combination of these devices on the uplink. In some examples, the wireless communication system 200 may implement various aspects of the wireless communication system 100.

[0110] The wireless communication system 200 may include one or more IAB donor nodes 210, which may be connected to an interface between a wired network and a wireless network. In some cases, the IAB donor node 210 may be referred to as an anchor node because the IAB donor node 210 anchors the wireless network to a wired connection. For example, each IAB donor node 210 may include at least one wired backhaul link 221 and one or more additional links (e.g., wireless backhaul link 225, backup wireless backhaul link 230, wireless access link 235, etc.). As shown herein, each wireless link in the wireless communication system 200 may also include one or more beams 220 (e.g., beam pairs including receive beams and transmission beams between each wireless node). The IAB donor node 210 may be split into an associated base station central unit (CU) 250 and a distributed unit (DU) 245 entity, wherein one or more DUs 245 associated with the IAB donor node 210 may be controlled in part by the associated CU 250. The CU 250 of the IAB 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 250 of the IAB donor node 210 may communicate with the core network 205 over a wired backhaul link 221 (e.g., which may be referred to as an NG interface). The DU 245 may host lower layer operations, such as layer 1 (L1) or layer 2 (L2) (e.g., radio link control (RLC), medium access control (MAC), physical (PHY) layer, etc.) functions and signaling. The DU 245 entity of the IAB donor node 210 may support a serving cell within a network coverage area based on a connection associated with a wireless backhaul link 225 and a wireless access link 235 of the IAB network. The DU 245 of the IAB donor node 210 may control both access and backhaul links within the corresponding network coverage, and may provide control and scheduling for descendant (i.e., child) IAB relay nodes 215 and / or UEs 115. For example, the DU 245 may support an RLC channel connection with the UE 115 (e.g., via the access link 235) or with the IAB relay node 215 (e.g., via a backhaul link, such as the primary wireless backhaul link 225 or the backup wireless backhaul link 230).

[0111] The IAB relay node 215 may be split into associated mobile terminals (MTs) 240 and base station DU 245 entities, wherein the MT 240 functions of the IAB relay node 215 may be controlled or scheduled by a preceding (i.e., parent) IAB node via a wireless backhaul link. The parent node of the IAB relay node 215 (i.e., child node) may be another (predecessor) IAB relay node 215 or an IAB donor node 210. The MT 240 functions may be similar to the functions performed by the UE 115 in the system. The IAB relay node 215 may be indirectly connected to the wired backhaul 220. For example, the IAB relay node 215 may be connected to the core network 205 via other IAB nodes (e.g., any number of additional IAB relay nodes 215 and IAB donor nodes 210) using a wireless backhaul link. The IAB relay node 215 may use the MT 240 functions to send upstream (e.g., to the core network 205) in the IAB system. In some cases, the DU 245 of the IAB relay node 215 may be partially controlled by a signaling message (e.g., sent via an F1 application protocol (AP)) from the CU 250 entity of the associated IAB donor node 210. The DU 245 of the IAB relay node 215 may support a serving cell of a network coverage area. For example, the DU 245 of the IAB relay node 215 may perform the same or similar functions as the DU 245 of the IAB donor node 210, thereby supporting one or more wireless access links 235 for the UE 115, one or more wireless backhaul links for the downstream IAB relay node 215, or both.

[0112] The wireless communication system 200 may employ a relay chain for communication within the IAB network architecture. For example, the UE 115 may communicate with an IAB node, and the IAB node may relay data to a base station CU 250 (e.g., a network entity or network device) or a core network 205 directly or via one or more IAB relay nodes 215. Each IAB relay node 215 may include a primary wireless backhaul link 225 for relaying data upstream or receiving information from a base station CU 250 or a core network 205. In some cases, the IAB 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 a connected IAB node, movement of an IAB node, maintenance at an IAB node, etc.), the IAB relay node 215 may utilize the backup wireless backhaul link 230 for backhaul communication within the IAB network. The first (e.g., main) wireless backhaul link 225 can be associated with a coverage area, and the MT 240 function can be controlled or scheduled by the first parent node. One or more auxiliary backhaul links (e.g., spare wireless backhaul link 230) can be associated with a non-co-located coverage area and controlled or scheduled by one or more parent nodes. Each of the main backhaul connection and one or more auxiliary connections can support the spectrum capability of providing network communication through one or more radio access technologies. One or more IAB nodes can also support base station DU 245 entities, and can support multiple backhauls and wireless access links within the relay chain. The DU 245 entity can control or schedule the offspring IAB relay node 215 and UE 115 in the IAB network (e.g., downstream in the IAB network) via the configured backhaul and wireless access links. That is, the IAB relay node 215 can act as a relay between the IAB donor node 210 and one or more offspring devices (e.g., other IAB relay nodes 215, UE 115, etc.) in two communication directions based on the established backhaul and access connections.

[0113] 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 an IAB donor node 210, an IAB relay node 215, a parent node, a child node, or any combination thereof. 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 function in multiple different roles simultaneously (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).

[0114] 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., an IAB relay node 215, an IAB donor node 210, or a UE 115) may receive or send communications using one or more beams 220 corresponding to a communication link (e.g., a 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 220-b to receive a signal carried by a transmit beam 220-a. In such an example, the transmit beam 220-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 a signal of the transmit beam 220-a. For example, a transmit beam 220-c, 220-d, 220-e, or any combination thereof may be picked up by a receive beam 220-b, which may result in relatively inefficient communications.

[0115] As described herein, a device (e.g., an IAB relay node 215, an IAB donor node 210, a CU 250, a DU, or a combination thereof) of the wireless communication system 200 may use interference measurement configuration techniques. For example, a wireless node (e.g., an IAB relay node 215, an IAB donor node 210, or a UE 115) may be enabled to determine a configuration for interference measurement (e.g., interference signals of transmission beams 220-c, 220-d, 220-e, etc. at receive beam 220-b) for wireless nodes in the wireless communication system 200, and the determined configuration may indicate an uplink resource set and a beam scanning configuration. The wireless node may also be enabled to determine a transmission beam set for an uplink reference signal based on the beam scanning configuration, and the wireless node may send an uplink reference signal to another wireless node or another portion of the wireless communication system 200 via the uplink resources and the transmission beam. 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 200 may establish a wireless backhaul link 225 with a child wireless node). In some examples, the parent-child relationship (e.g., the established wireless backhaul link 225) may facilitate determination of a configuration for interference measurements between the parent wireless node and the child wireless node due to the existing relationship between the parent wireless node and the child wireless node and the attendant knowledge each node has about the other node.

[0116] In some examples, a child node of a parent-child relationship within the wireless communication system 200 may receive an indication of a configuration for interference measurement from a parent node of the parent-child relationship via a wireless backhaul link 225. The child node may receive such an indication semi-statically or dynamically. Additionally or alternatively, the parent node of the parent-child relationship may receive an indication of a configuration for interference measurement from the child node. In some examples, the received indication may specify an SRS configuration for interference measurement that is different from an SRS configuration for beam management. Additionally or alternatively, one of the parent node or the child node may send a report via the wireless backhaul link 225 or any other type of communication link indicating that the sending node supports the use of the SRS configuration for interference measurement within the wireless communication system 200.

[0117] Figure 3 An example of a wireless communication system 300 supporting interference measurement configuration in a wireless system according to 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 IAB donor node 210, the IAB 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 examples of various interference scenarios for communication between wireless devices.

[0118] The wireless communication system 300 may support communication between various wireless nodes, such as the core network 205-a, one or more IAB donor nodes 210, IAB relay nodes 215, or UE 115. For example, various wireless nodes may use one or more backhaul links 306 or access links 311 (which may be referred to herein as Figure 2305 and the like) to send signals (e.g., via a transmit beam at a wireless node) or receive signals (e.g., via a receive beam at a wireless node). More specifically, the IAB relay node 215 may use the backhaul links 306 (also referred to herein as beams 305) to communicate with other IAB relay nodes 215 or IAB donor nodes 210 via one or more backhaul links 306 (also referred to herein as beams 305, e.g., beams 305-a to 305-h) (e.g., beam pairs including receive beams and transmit beams extending between the IAB relay nodes 215 or the IAB donor nodes 210). The IAB relay node 215 may also communicate with the UE 115 via one or more access links 311 (also referred to herein as beams 310, e.g., beams 310-a through 310-h) (e.g., beam pairs comprising receive beams and transmit beams extending between the IAB relay node 215 and the UE 115).

[0119] Reference Figure 3 , a portion of the IAB relay node 215 is shown as experiencing interference 315, for example, at one or more receive beams of a wireless node. Although the interference 315 is shown as being received at antennas of child nodes (e.g., IAB 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., IAB relay nodes 215-a, 215-c, 215-e, 215-g, and 215-h) or a grandparent node (e.g., IAB donor node 210-a). In some examples, the wireless node may implement various aspects of TDD technology (e.g., dynamic TDD or static TDD), spatial division multiplexing (SDM) technology (e.g., SDM technology with adjacent hopping across IAB nodes or co-channel diversity combining (DC) with SDM technology, etc.), which may lead to other examples of interference such as cross-link interference (CLI) or inter-carrier interference (ICI) in the wireless communication system 300.

[0120] As an illustrative example, an IAB relay node 215-a (e.g., a parent node or a child node) may establish communication with a UE 115-a (e.g., via an access link 311), and an IAB relay node 215-b may establish communication with a UE 115-b. For example, the IAB relay node 215-b may receive a signal from the UE 115-b (e.g., via a transmit beam of the UE 115-b) using a receive beam 310-c of the IAB relay node 215-b. The receive beam of the IAB relay node 215-b may also receive interference 315 from a signal from the IAB relay node 215-a (or from the UE 115-a). For example, the IAB relay node 215-a may transmit a signal via a transmit beam of the IAB relay node 215-a, and the signal may generate interference 315 at a receive beam of the IAB relay node 215-b. In such examples, the IAB relay node 215 - a may be referred to as an aggressor wireless node, and the IAB relay node 215 - b may be referred to as a victim wireless node.

[0121] In some examples, the IAB relay node 215-d can be an example of a victim wireless node. For example, a receive beam 310-e of the IAB relay node 215-d (e.g., receiving signals on a communication link with the UE 115-c) can receive interference 315 from communications between the IAB relay node 215-c and the IAB donor node 210-a. In some examples, the IAB relay node 215-f can be an example of a victim wireless node. A receive beam 310-g of the IAB relay node 215-f (e.g., receiving signals from the UE 115-d on the access link 311) can receive interference 315 from communications between the IAB relay node 215-e and the IAB relay node 215-f. That is, the IAB relay node 215-e may transmit a signal to the IAB relay node 215-f (e.g., using a transmit beam of the IAB relay node 215-e), and the receive beam may receive interference 315 with the signal from the IAB relay node 215-e, which may degrade the quality of communication between the IAB relay node 215-f and the UE 115-d, for example, when the receive beam is paired with the transmit beam of the UE 115-d. In some examples, the IAB relay node 215-i may be an example of a victim wireless node. For example, the IAB relay node 215-i may receive a signal from the IAB relay node 215-g using a first receive beam, and receive a signal from the IAB relay node 215-h using a second receive beam. However, a signal intended for the second receive beam may cause interference with a signal intended for the first receive beam, and vice versa. In some examples, Figure 3Some or all of the victim nodes described in 310 may additionally or alternatively receive interference 315 from an aggressor wireless node that has no parent-child relationship with the victim node or is not included in the IAB network described herein.

[0122] Although for clarity of illustration, the various access link communications and interference 315 are shown as being transmitted in one direction, in some examples, some or all of the directions shown may be reversed or may be directed to different devices than shown. As an illustrative example, the IAB relay node 215-b may use a transmit beam to transmit a signal to the UE 115-b, and a receive beam of the IAB relay node 215-a may receive the interference 315 based on the signal transmitted to the UE 115-b. In such an example, the IAB relay node 215-a may be referred to as a victim wireless node, and the UE 115-b may be referred to as an aggressor wireless node.

[0123] The 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 performing interference measurements between a parent node and a child node using interference measurements based on a sounding reference signal. Thus, a wireless node (e.g., a victim wireless node or an aggressor wireless node) may be enabled to perform interference measurements of communications between the wireless node and another wireless node (e.g., the corresponding other of the victim wireless node or the aggressor wireless node) in the wireless communication system 300. Due to the parent-child relationship between the two wireless nodes, the wireless node may report interference measurements or take actions based on its knowledge of the other node. The parent-child relationship between the two wireless nodes may facilitate more efficient coordination between the two nodes to reduce interference.

[0124] A parent node (e.g., one of the IAB relay nodes 215) may have a first number of transmission beam candidates and reception beam candidates available for communication with a corresponding child node (which may be another of the IAB relay nodes 215). In some cases, at least some of the transmission beam candidates or reception beam candidates may be associated with an MT 240 of the parent node (e.g., the IAB relay node 215) as part of a backhaul link 305 extending between the parent node (e.g., the IAB relay node 215) and a grandparent node (e.g., one of the IAB donor nodes 210). One or more relay nodes 215 acting as child nodes may have a second number of transmission beam candidates and reception beam candidates available for communication with corresponding one or more parent nodes (such as one or more of the IAB relay nodes 215). In some cases, one or more of the transmission beams or reception beams may be associated with an MT 240 or DU 245 of one or more of the child nodes (e.g., the IAB relay node 215). In some cases, each of the parent node (eg, the IAB relay node 215) and the child node (eg, the IAB relay node 215) may determine a reference signal received power (RSRP) or received signal strength indicator (RSSI) interference matrix.

[0125] In some cases, the MT 240 of one or more of the child nodes (e.g., IAB relay node 215) or parent nodes (e.g., IAB relay node 215) may be configured with one or more SRS resource sets. For example, each SRS resource set may be configured with 16, 32, or 64 resources. In some cases, one or more of the resource sets, resources, or resources of each set for each MT 240 may be increased by multiples ranging from 2 to 4 to facilitate MT 240 to scan beams along more directions during uplink functions. In some examples, each MT 240 of each child node (e.g., IAB relay node 215) in the child nodes may perform beam scanning in one or more different directions, which may be associated with other types of communications between the DU 245 of the child node (e.g., IAB relay node 215) or parent node (e.g., IAB relay node 215) that is performing measurement.

[0126] When configured to perform uplink beam scanning as part of a periodic resource set, the MT 240 of each of the child node (e.g., IAB relay node 215) and the parent node (e.g., IAB relay node 215) can perform beam scanning in multiple directions. In some cases, one of the child node (e.g., IAB relay node 215) or the parent node (e.g., IAB relay node 215) in the parent-child relationship can distinguish between SRS resource sets to be used for beam management or interference measurement. In some examples, MT 240 can indicate support or desire to use SRS for interference measurement. In such a case, such interference measurement can include beam scanning in directions other than the direction for uplink or downlink transmission, and the indication from MT 240 can be semi-static or dynamic. In some cases, the DU 245 of one of the grandparent nodes (e.g., IAB donor node 210-a) or one of the parent nodes (e.g., IAB relay node 215) can indicate support or desire to use SRS for interference measurement. In such examples, the indication may be semi-static or dynamic.

[0127] In some examples, one or more periodic resources (or periodic resource sets) may be configured by a portion of the wireless communication system 300 for interference measurement. In addition, one or more separate periodic resource sets may be configured by a portion of the wireless communication system 300 for beam management. In such a case, the periodic resource set configured for interference measurement may have a different configuration from the periodic resource set configured for beam management. In addition, in the example of two different periodic resource sets, the two periodic resource sets may have different configurations with respect to the following: the number of resources in each of the two periodic resource sets, the time or frequency position of the two periodic resource sets, or the period of each of the two periodic resource sets, among other configurations.

[0128] In some examples, the MT 240 transmitting the parent node or child node (e.g., IAB relay node 215) may select a transmission beam to scan along all configured directions associated with the parent node or child node (e.g., IAB relay node 215). In some examples, the MT 240 may perform interference measurements using a codebook specific to uplink beam scanning, which may be a codebook different from a codebook that may be used by the MT 240 for other types of communications. In one example, the codebook used by the MT 240 for uplink beam scanning may indicate the use of a smaller number of beams (e.g., a smaller number of wider beams) to cover a predetermined angular region compared to the number of beams (e.g., a larger number of narrower beams) used by the MT 240 to perform non-uplink beam scanning actions. For example, the codebook used by the MT 240 for uplink beam scanning may indicate the use of a wider beam to cover a predetermined angular region compared to the width of the beam used by the MT 240 to perform non-uplink beam scanning actions. In such an example, the number and size (eg, width) of beams indicated by the interference measurement codebook for use by MT 240 may be similar to the beams used by co-located DU 245 for downlink synchronization signal block (SSB) beam scanning.

[0129] In one example, as part of interference measurement beam scanning according to the interference measurement codebook, the MT 240 may perform beam scanning along a direction in which the MT 240 is configured to communicate (e.g., in a direction associated with a resident child node (e.g., the IAB relay node 215) or an additional parent node (e.g., the IAB relay node 215)). In some examples, according to the interference measurement codebook associated with the MT 240, the MT 240 may perform beam scanning along a direction associated with the backhaul link, but not along a direction associated with the access link. In such a case, since static or other types of interference are additionally generated compared to the access link, the backhaul link may be indicated by the interference measurement codebook.

[0130] In some examples, the MT 240 or co-located DU 245 of one of the parent node or child node (e.g., IAB relay node 215) may indicate the number of beams or SRS resources used to perform interference measurement beam scanning. In such a case, the indication may be semi-static or dynamic. In another example, the DU 245 of one of the parent node (e.g., IAB relay node 215) or grandparent node (e.g., IAB donor node 210-a) may determine the number of resources to be allocated for interference measurement. In such a case, the determination of the number of resources to be allocated for interference measurement may be based on the knowledge of the number and type of connections associated with the node associated with DU 245. For example, the determination of the number of resources to be allocated for interference measurement may be based on the knowledge of the number of parent nodes or child nodes (e.g., IAB relay node 215) connected to the node associated with the determination DU 245.

[0131] In some examples, the DU 245 associated with the parent node (e.g., IAB relay node 215) can adopt the configured uplink SRS transmission to perform interference measurement. In such a case, the DU 245 can measure SRS via one or more receive beams associated with one or more beam directions associated with other communications with the DU 245. In some cases, the CU 250 of the parent node (e.g., IAB relay node 215) can indicate to the DU 245 associated with the parent node (e.g., IAB relay node 215) that the DU 245 can use SRS resources to perform interference measurement. In such a case, the CU 250 can indicate the specific receive beam direction to be used for interference measurement. In other examples, the DU 245 can provide an interference measurement report to the CU 250 or the parent node (e.g., IAB relay node 215). Additionally, a parent node or child node (eg, IAB relay node 215) may utilize resources associated with the individual parent node or child node (eg, IAB relay node 215) for interference measurement and may be configured by the CU 250 or DU 245 associated with the utilized resources.

[0132] Figure 4 An example of a process flow 400 for supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. In some examples, the process flow 400 can implement aspects of the wireless communication system 100, the wireless communication system 200, or the wireless communication system 300. The process flow 400 includes at least an IAB node 405 (e.g., a first wireless node) and an IAB node 410 (e.g., a second wireless node). These can be referenced Figures 1 to 3In some cases, IAB node 405 and IAB node 410 may be in a parent-child relationship (e.g., based on the establishment of a communication link between IAB node 405 and IAB node 410, e.g., referring to Figures 1 to 3 The communication link 125, wireless backhaul link 225, or access link 311 described herein may be implemented in an alternative example below, where some steps are performed in a different order than described or not performed at all. In some cases, the steps may include additional features not mentioned below, or additional steps may be added.

[0133] At 415, the IAB node 405 may determine a configuration for interference measurement for the IAB node 405. The configuration may indicate an uplink resource set for an uplink reference signal for interference measurement and a beam scanning configuration for transmission of the uplink reference signal. In some cases, the configuration may indicate one or more resource sets configured for interference measurement for the IAB node 405. In such a case, one or more resource sets may be different from a resource set configured for beam management for the IAB node 405. In some cases, the IAB node 405 may identify a codebook for interference measurement based on the beam scanning configuration. In such a case, the codebook may be different from a codebook for other communications performed by the IAB node 405.

[0134] Optionally, at 420, the IAB node 405 may receive an indication of a configuration for interference measurement from the IAB node 410. In some cases, the indication of the configuration may be received semi-statically or dynamically. In some cases, the indication may specify an SRS configuration for interference measurement that is different from an SRS configuration for beam management. In some cases, the IAB node 405 may receive a configuration for interference measurement for the IAB node 405. In such a case, the configuration may indicate a resource allocation for an SRS resource that indicates one or more consecutive symbols within a time slot for sending an uplink reference signal.

[0135] In some cases, the IAB node 405 may receive an uplink reference signal configuration for an additional IAB node different from the IAB node 410. In such a case, the IAB node 405 may monitor one or more uplink reference signals from the additional IAB node based on the uplink reference signal configuration. The IAB node 405 may perform interference measurements on the additional IAB node based on the one or more uplink reference signals. In addition, in such a case, the uplink reference signal configuration for the additional IAB node may be received from the IAB node 410 or the additional IAB node.

[0136] Optionally, at 425, the IAB node 405 may send a report indicating that the IAB node 405 supports the use of SRS configuration for interference measurements for the IAB node 405. In some cases, the report may be sent semi-statically or dynamically.

[0137] At 430, the IAB node 405 may determine a set of transmission beams for the uplink reference signal based on the beam scanning configuration. In some cases, the IAB node 405 may determine the set of transmission beams to be all transmission beams supported by the UE.

[0138] At 435, the IAB node 405 may send an uplink reference signal to the IAB node 410 via the uplink resource set and the transmission beam set according to the beam scanning configuration. In some cases, the IAB node 405 may send an uplink reference signal via all transmission beams supported by the IAB node 405 or the IAB node 410.

[0139] In some cases, the IAB node 405 may send an indication of the number of transmission beams used for beam scanning via an uplink set of uplink resources using a transmission beam set. In such a case, the IAB node 405 may receive a configuration for interference measurement in response to the indication. The configuration may allocate resources for interference measurement based on the number of transmission beams. In addition, in such a case, an indication of the number of transmission beams used for beam scanning may be sent semi-statically or dynamically.

[0140] In some cases, the IAB node 405 may determine a direction of communication for the IAB node 405, and may determine a set of transmission beams based on the direction of communication. In such cases, the IAB node 405 may use the set of transmission beams to send an uplink reference signal in the direction of communication. In other such cases, the direction of communication may be associated with one or more parent nodes or one or more child nodes associated with the IAB node 405. In addition, in such cases, the direction of communication may be associated with one or more backhaul links of the IAB node 405.

[0141] Figure 5 A block diagram 500 of a device 505 supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The device 505 may be an example of aspects of a UE 115 or a base station 105 as described herein. 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).

[0142] 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 interference measurement configuration in a wireless system, etc.). The information may be communicated to other components of the device 505. The receiver 510 may be a reference Figure 8 and 9 Examples of aspects of the described transceiver 820 or 920. The receiver 510 may utilize a single antenna or a group of antennas.

[0143] The communication manager 515 may perform the following operations: determine a configuration for interference measurement for a first wireless node, the configuration indicating an uplink resource set for an uplink reference signal for interference measurement and a beam scanning configuration for transmission of the uplink reference signal; determine a transmission beam set for the uplink reference signal based on the beam scanning configuration; and send an uplink reference signal to a second wireless node in the wireless communication system via the uplink resource set and the transmission beam set according to the beam scanning configuration. The communication manager 515 may also perform the following operations: identify a configuration for interference measurement for a first wireless node, the configuration indicating an uplink resource set configured for a second wireless node and a beam scanning configuration for the second wireless node; monitor an uplink resource set configured for an uplink reference signal set from a second wireless node via a receive beam set according to the beam scanning configuration; and perform interference measurement on the uplink reference signal set based on the monitoring. The communication manager 515 may be an example of aspects of the communication manager 810 or 910 described herein.

[0144] The communication manager 515 or its subcomponents may be implemented in hardware, in code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 515 or its subcomponents may be performed by a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0145] The communication manager 515 or its subcomponents may be physically located at various locations, including being distributed so that portions of the functions are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 515 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 515 or its subcomponents may be combined with one or more other hardware components (including, but not limited to, input / output (I / O) components, transceivers, network servers, another computing device, one or more other components described in the present disclosure, or combinations thereof).

[0146] The transmitter 520 can transmit signals generated by other components of the device 505. In some examples, the transmitter 520 can be co-located with the receiver 510 in a transceiver module. For example, the transmitter 520 can be as described in reference Figure 8 and 9 Examples of aspects of the described transceiver 820 or 920. The transmitter 520 may utilize a single antenna or a group of antennas.

[0147] In some examples, the communication manager 515 can be implemented as an integrated circuit or chipset for a mobile device modem, and the receiver 510 and transmitter 520 can be implemented as analog components (e.g., amplifiers, filters, antennas) coupled to the mobile device modem to enable wireless transmission and reception on one or more frequency bands.

[0148] The communication manager 515 as described herein may be implemented to achieve one or more potential advantages. One implementation may allow the device 505 to determine a transmission beam for an uplink reference signal based on a configuration that may reduce or mitigate interference caused by neighboring nodes in a wireless communication system (e.g., an IAB system). Such techniques may enable more efficient communications, reduced interference, and improved system performance.

[0149] Based on the techniques for implementing retuning from one narrowband carrier to another narrowband carrier as described herein, a processor of the UE 115 (e.g., controlling the receiver 510, the transmitter 520, or the like) may be configured to perform retuning from one narrowband carrier to another narrowband carrier. Figure 8 The described transceiver 820) can improve reliability and reduce signaling overhead because the UE 115 can avoid performing unnecessary measurements for interference management.

[0150] Figure 6A block diagram 600 of a device 605 supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The device 605 may be an example of aspects of the device 505, UE 115, or base station 105 as described herein. The device 605 may include a receiver 610, a communication manager 615, and a transmitter 645. The device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0151] 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 interference measurement configuration in a wireless system, etc.). The information may be communicated to other components of the device 605. The receiver 610 may be as described with reference to Figure 8 and 9 Examples of aspects of the described transceiver 820 or 920. The receiver 610 may utilize a single antenna or a group of antennas.

[0152] 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 configuration manager 620, a transmit beam component 625, a reference signal transmitter 630, a resource monitor 635, and an interference manager 640. The communication manager 615 may be an example of aspects of the communication manager 810 or 910 as described herein.

[0153] The configuration manager 620 may determine a configuration for interference measurement for a first wireless node, the configuration indicating an uplink resource set for an uplink reference signal for interference measurement and a beam scanning configuration for transmission of the uplink reference signal. The transmission beam component 625 may determine a transmission beam set for the uplink reference signal based on the beam scanning configuration. The reference signal transmitter 630 may send an uplink reference signal to a second wireless node in the wireless communication system via an uplink resource set and a transmission beam set according to the beam scanning configuration. The configuration manager 620 may identify a configuration for interference measurement for a first wireless node, the configuration indicating an uplink resource set configured for a second wireless node and a beam scanning configuration for the second wireless node.

[0154] The resource monitor 635 may monitor the uplink resource set configured for the uplink reference signal set from the second wireless node via the receive beam set according to the beam scanning configuration. The interference manager 640 may perform interference measurements on the uplink reference signal set based on the monitoring. The transmitter 645 may transmit signals generated by other components of the device 605. In some examples, the transmitter 645 may be co-located with the receiver 610 in a transceiver module. For example, the transmitter 645 may be a reference signal. Figure 8 and 9 Examples of aspects of the described transceiver 820 or 920. The transmitter 645 may utilize a single antenna or a group of antennas.

[0155] Figure 7 A block diagram 700 of a communication manager 705 supporting interference measurement configuration in a wireless system in accordance with 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 configuration manager 710, a transmit beam component 715, a reference signal transmitter 720, a configuration receiver 725, a report transmitter 730, a codebook component 735, a direction manager 740, an indication transmitter 745, a signal monitor 750, a measurement component 755, a resource monitor 760, an interference manager 765, a scheduler 770, an indication receiver 775, and a receive beam selector 780. Each of these modules may communicate with each other directly or indirectly (e.g., via one or more buses).

[0156] The configuration manager 710 may determine a configuration for interference measurement for a first wireless node, the configuration indicating an uplink resource set for an uplink reference signal for interference measurement and a beam scanning configuration for transmission of the uplink reference signal. In some examples, the configuration manager 710 may identify a configuration for interference measurement for a first wireless node, the configuration indicating an uplink resource set configured for a second wireless node and a beam scanning configuration for the second wireless node. In some cases, the configuration indicates one or more resource sets configured for interference measurement for the first wireless node, the one or more resource sets being different from a resource set configured for beam management for the first wireless node. In some cases, the configuration indicates a transmission power associated with an uplink reference signal set.

[0157] The transmission beam component 715 can determine a set of transmission beams for uplink reference signals based on the beam scanning configuration. In some examples, the transmission beam component 715 can determine the set of transmission beams as all transmission beams supported by the first wireless node. In some examples, the transmission beam component 715 can determine the set of transmission beams based on the direction.

[0158] The reference signal transmitter 720 may transmit an uplink reference signal to a second wireless node in the wireless communication system via an uplink resource set and a transmission beam set according to the beam scanning configuration. In some examples, the reference signal transmitter 720 may transmit an uplink reference signal via all transmission beams supported by the first wireless node. In some examples, the reference signal transmitter 720 may use the transmission beam set to transmit an uplink reference signal in the direction of communication. In some cases, the first wireless node and the second wireless node are in a parent-child relationship.

[0159] The resource monitor 760 may monitor the uplink resource set configured for the uplink reference signal set from the second wireless node via the receive beam set according to the beam scanning configuration. In some cases, the uplink reference signal set includes one or more SRSs. The interference manager 765 may perform interference measurements on the uplink reference signal set based on the monitoring. The configuration receiver 725 may receive an indication of the configuration for interference measurement from the second wireless node or another wireless node in the wireless communication system.

[0160] In some examples, the configuration receiver 725 may receive a configuration for interference measurement in response to an indication, the configuration allocating resources for interference measurement based on the number of transmission beams. In some examples, the configuration receiver 725 may receive a configuration for interference measurement for a first wireless node, the configuration indicating a resource allocation for SRS resources, the resource allocation indicating one or more consecutive symbols within a time slot for sending an uplink reference signal. In some examples, the configuration receiver 725 may receive an uplink reference signal configuration for a third wireless node in a wireless communication system. In some cases, the configuration is received semi-statically or dynamically. In some cases, the indication specifies an SRS configuration for interference measurement that is different from an SRS configuration for beam management.

[0161] In some cases, the uplink reference signal configuration for the third wireless node is received from the second wireless node or the third wireless node. The report transmitter 730 can send a report indicating that the first wireless node supports the use of the SRS configuration for interference measurement for the first wireless node. In some examples, the report transmitter 730 can send a report indicating the interference measurement results to at least one of the second wireless node or the central unit. In some cases, the report is sent semi-statically or dynamically.

[0162] The codebook component 735 can identify a codebook for interference measurement based on the beam scanning configuration, wherein the codebook is different from a codebook for other communications performed by the first wireless node. The direction manager 740 can determine the direction of communication for the first wireless node. In some cases, the direction is associated with one or more parent nodes or one or more child nodes of the first wireless node. In some cases, the direction is associated with one or more backhaul links of the first wireless node. The indication transmitter 745 can use the transmission beam set to send an indication of the number of transmission beams used for beam scanning via the uplink resource set. In some cases, the indication is sent semi-statically or dynamically.

[0163] The signal monitor 750 may monitor one or more uplink reference signals from the third wireless node based on the uplink reference signal configuration. The measurement component 755 may perform interference measurements of the third wireless node based on the one or more uplink reference signals. The scheduler 770 may schedule communications for the first wireless node or the third wireless node based on the interference measurements. The indication receiver 775 may receive an indication of a configuration for interference measurements of the first wireless node from the central unit.

[0164] The receive beam selector 780 may select a receive beam set from receive beams supported by the first wireless node based on a communication direction of the first wireless node. In some cases, the communication direction corresponds to a parent node or child node of the first wireless node, or one or more backhaul links associated with the first wireless node.

[0165] Figure 8 A diagram of a system 800 including a device 805 supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The device 805 may be an example of a device 505, a device 605, or a UE 115 as described herein or include a component of the device 505, a device 605, or a UE 115. The device 805 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 810, a transceiver 820, an antenna 825, a memory 830, a processor 840, and an I / O controller 850. These components may communicate electronically via one or more buses (e.g., a bus 855).

[0166] The communication manager 810 may perform the following operations: determine a configuration for interference measurement for a first wireless node, the configuration indicating an uplink resource set for an uplink reference signal for interference measurement and a beam scanning configuration for transmission of the uplink reference signal; determine a transmission beam set for the uplink reference signal based on the beam scanning configuration; and send an uplink reference signal to a second wireless node in the wireless communication system via the uplink resource set and the transmission beam set according to the beam scanning configuration. The communication manager 810 may also perform the following operations: identify a configuration for interference measurement for a first wireless node, the configuration indicating an uplink resource set configured for a second wireless node and a beam scanning configuration for the second wireless node; monitor an uplink resource set configured for an uplink reference signal set from the second wireless node via a receiving beam set according to the beam scanning configuration; and perform interference measurement on the uplink reference signal set based on the monitoring.

[0167] 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 for modulating packets and providing the modulated packets to an antenna for transmission, and demodulating packets received from an antenna.

[0168] 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 concurrently sending or receiving multiple wireless transmissions.

[0169] The memory 830 may include random access memory (RAM), read-only memory (ROM), or a combination thereof. The memory 830 may store computer readable code 835, which includes instructions that, when executed by a processor (e.g., processor 840), cause the device to perform various functions described herein. In some cases, the memory 830 may also include a basic I / O system (BIOS), etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0170] The processor 840 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 840 may be configured to operate a 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 interference measurement configuration in a wireless system).

[0171] I / O controller 850 can manage input and output signals for device 805. I / O controller 850 can also manage peripheral devices that are not integrated into device 805. In some cases, I / O controller 850 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 850 can utilize a computer such as a 805. In some cases, the I / O controller 850 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, the I / O controller 850 may be implemented as part of a processor. In some cases, a user may interact with the device 805 via the I / O controller 850 or via the hardware components controlled by the I / O controller 850.

[0172] The code 835 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 835 may be stored in a non-transitory computer-readable medium (e.g., system memory or other types of memory). In some cases, the code 835 may not be directly executable by the processor 840, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0173] Fig. 9A diagram of a system 900 including a device 905 supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The device 905 may be an example of a device 505, a device 605, or a base station 105 as described herein or include a component of the device 505, the device 605, or the base station 105. The device 905 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 910, a network communication manager 915, a transceiver 920, an antenna 925, a memory 930, a processor 940, and an inter-station communication manager 945. These components may communicate electronically via one or more buses (e.g., a bus 955).

[0174] The communication manager 910 may perform the following operations: determine a configuration for interference measurement for a first wireless node, the configuration indicating an uplink resource set for an uplink reference signal for interference measurement and a beam scanning configuration for transmission of the uplink reference signal; determine a transmission beam set for the uplink reference signal based on the beam scanning configuration; and send an uplink reference signal to a second wireless node in the wireless communication system via the uplink resource set and the transmission beam set according to the beam scanning configuration. The communication manager 910 may also perform the following operations: identify a configuration for interference measurement for a first wireless node, the configuration indicating an uplink resource set configured for a second wireless node and a beam scanning configuration for the second wireless node; monitor an uplink resource set configured for an uplink reference signal set from the second wireless node via a receiving beam set according to the beam scanning configuration; and perform interference measurement on the uplink reference signal set based on the monitoring.

[0175] The network communications manager 915 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 915 may manage the transmission of data communications for client devices (eg, one or more UEs 115).

[0176] The transceiver 920 may communicate bidirectionally via one or more antennas, wired or wireless links as described herein. For example, the transceiver 920 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 920 may also include a modem for modulating packets and providing the modulated packets to an antenna for transmission, and demodulating packets received from an antenna.

[0177] In some cases, a wireless device may include a single antenna 925. However, in some cases, the device may have more than one antenna 925, which may be capable of concurrently sending or receiving multiple wireless transmissions.

[0178] The memory 930 may include RAM, ROM, or a combination thereof. The memory 930 may store computer readable code 935, which includes instructions that, when executed by a processor (e.g., processor 940), cause the device to perform various functions described herein. In some cases, the memory 930 may also include BIOS, etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0179] The processor 940 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 940 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 940. The processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 930) to cause the device 905 to perform various functions (e.g., functions or tasks supporting interference measurement configuration in a wireless system).

[0180] The inter-site communication manager 945 may manage communications with other base stations 105 and may include a controller or scheduler for controlling communications with UE 115 in cooperation with other base stations 105. For example, the inter-site communication manager 945 may coordinate scheduling of transmissions to UE 115 to implement various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-site communication manager 945 may provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0181] The code 935 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 935 may be stored in a non-transitory computer-readable medium (e.g., system memory or other types of memory). In some cases, the code 935 may not be directly executable by the processor 940, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0182] Fig.10 A block diagram 1000 of a device 1005 supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The device 1005 can be an example of aspects of a base station 105 as described herein. The device 1005 may include a receiver 1010, a communication manager 1015, and a transmitter 1020. The device 1005 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0183] The receiver 1010 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 interference measurement configuration in a wireless system, etc.). The information may be communicated to other components of the device 1005. The receiver 1010 may be a reference Fig.13 Examples of various aspects of the transceiver 1320 are described. The receiver 1010 may utilize a single antenna or a group of antennas.

[0184] The communication manager 1015 may perform the following operations: send a configuration for interference management to a first wireless node of the wireless communication system, the configuration indicating an uplink resource set and a beam scanning configuration for an uplink reference signal set; receive a report indicating interference measurement from a second wireless node according to the configuration; and send scheduling information to the first wireless node or the second wireless node based on the report, the scheduling information including resource allocation for communication for the first wireless node or the second wireless node. The communication manager 1015 may be an example of aspects of the communication manager 1310 described herein.

[0185] The communication manager 1015 or its subcomponents may be implemented in hardware, 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 1015 or its subcomponents may be performed by a general purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0186] The communication manager 1015 or its subcomponents may be physically located at various locations, including being distributed so that portions of the functions are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 1015 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 1015 or its subcomponents may be combined with one or more other hardware components (including, but not limited to, input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof).

[0187] The transmitter 1020 can transmit signals generated by other components of the device 1005. In some examples, the transmitter 1020 can be co-located with the receiver 1010 in a transceiver module. For example, the transmitter 1020 can be as described in reference to Fig.13 Examples of various aspects of the transceiver 1320 are described. The transmitter 1020 may utilize a single antenna or a group of antennas.

[0188] Fig.11 A block diagram 1100 of a device 1105 supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The device 1105 may be an example of aspects of the device 1005 or base station 105 as described herein. The device 1105 may include a receiver 1110, a communication manager 1115, and a transmitter 1135. The device 1105 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0189] The receiver 1110 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to interference measurement configuration in a wireless system, etc.). The information may be communicated to other components of the device 1105. The receiver 1110 may be as described with reference to Fig.13 Examples of various aspects of the transceiver 1320 are described. The receiver 1110 may utilize a single antenna or a group of antennas.

[0190] Communications manager 1115 may be an example of aspects of communications manager 1015 as described herein. Communications manager 1115 may include configuration transmitter 1120, report receiver 1125, and schedule information transmitter 1130. Communications manager 1115 may be an example of aspects of communications manager 1310 as described herein.

[0191] The configuration transmitter 1120 may send a configuration for interference management to a first wireless node of the wireless communication system, the configuration indicating an uplink resource set and a beam scanning configuration for an uplink reference signal set. The report receiver 1125 may receive a report indicating interference measurement from a second wireless node according to the configuration. The scheduling information transmitter 1130 may send scheduling information to the first wireless node or the second wireless node based on the report, the scheduling information including resource allocation for communication for the first wireless node or the second wireless node.

[0192] The transmitter 1135 may transmit signals generated by other components of the device 1105. In some examples, the transmitter 1135 may be co-located with the receiver 1110 in a transceiver module. Fig.13 Examples of various aspects of the transceiver 1320 are described. The transmitter 1135 may utilize a single antenna or a group of antennas.

[0193] Fig.12A block diagram 1200 of a communication manager 1205 supporting interference measurement configuration in a wireless system in accordance with aspects of the present disclosure is shown. The communication manager 1205 may be an example of aspects of the communication manager 1015, the communication manager 1115, or the communication manager 1310 described herein. The communication manager 1205 may include a configuration transmitter 1210, a report receiver 1215, and a scheduling information transmitter 1220. Each of these modules may communicate with each other directly or indirectly (e.g., via one or more buses).

[0194] Configuration transmitter 1210 can send a configuration for interference management to a first wireless node of a wireless communication system, the configuration indicating an uplink resource set and a beam scanning configuration for an uplink reference signal set. In some cases, the configuration indicates a receive beam set to be used for interference measurement for a second wireless node. In some cases, the first wireless node is a child node or grandchild node of a central unit. In some cases, the configuration indicates a transmission power associated with an uplink reference signal set. In some cases, the uplink reference signal set includes one or more SRSs.

[0195] The report receiver 1215 may receive a report indicating interference measurements from the second wireless node according to the configuration.The scheduling information transmitter 1220 may send scheduling information including resource allocations for communication for the first wireless node or the second wireless node to the first wireless node or the second wireless node based on the report.

[0196] Fig.13 A diagram of a system 1300 including a device 1305 supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The device 1305 may be an example of or include components of a device 1005, a device 1105, or a base station 105 as described herein. The device 1305 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 1310, a network communication manager 1315, a transceiver 1320, an antenna 1325, a memory 1330, a processor 1340, and an inter-station communication manager 1345. These components may communicate electronically via one or more buses (e.g., a bus 1355).

[0197] The communication manager 1310 can perform the following operations: send a configuration for interference management to a first wireless node of a wireless communication system, the configuration indicating an uplink resource set and a beam scanning configuration for an uplink reference signal set; receive a report indicating interference measurement from a second wireless node according to the configuration; and send scheduling information to the first wireless node or the second wireless node based on the report, the scheduling information including resource allocation for communication for the first wireless node or the second wireless node.

[0198] The network communications manager 1315 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1315 may manage the transmission of data communications for client devices (eg, one or more UEs 115).

[0199] The transceiver 1320 may communicate bidirectionally via one or more antennas, wired or wireless links as described herein. For example, the transceiver 1320 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1320 may also include a modem for modulating packets and providing the modulated packets to an antenna for transmission, and demodulating packets received from an antenna.

[0200] In some cases, a wireless device may include a single antenna 1325. However, in some cases, the device may have more than one antenna 1325, which may be capable of concurrently sending or receiving multiple wireless transmissions.

[0201] The memory 1330 may include RAM, ROM, or a combination thereof. The memory 1330 may store computer readable code 1335, which includes instructions that, when executed by a processor (e.g., processor 1340), cause the device to perform various functions described herein. In some cases, the memory 1330 may also include BIOS, etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0202] Processor 1340 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor 1340 may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be integrated into processor 1340. Processor 1340 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1330) to cause device 1305 to perform various functions (e.g., functions or tasks supporting interference measurement configuration in a wireless system).

[0203] The inter-site communication manager 1345 may manage communications with other base stations 105 and may include a controller or scheduler for controlling communications with UE 115 in cooperation with other base stations 105. For example, the inter-site communication manager 1345 may coordinate scheduling of transmissions to UE 115 to implement various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-site communication manager 1345 may provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0204] The code 1335 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1335 may be stored in a non-transitory computer-readable medium (e.g., system memory or other types of memory). In some cases, the code 1335 may not be directly executable by the processor 1340, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0205] Fig.14 A flow chart illustrating a method 1400 for supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The operations of the method 1400 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. For example, the operations of the method 1400 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. Figures 5 to 9 In some examples, the UE or base station may execute an instruction set to control the functional elements of the UE or base station to perform the functions described herein. Additionally or alternatively, the UE or base station may use dedicated hardware to perform various aspects of the functions described herein.

[0206] At 1405, the UE or base station may determine a configuration for interference measurement for a first wireless node, the configuration indicating a set of uplink resources for an uplink reference signal for interference measurement and a beam scanning configuration for transmission of the uplink reference signal. The operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be performed as described with reference to Figures 5 to 9 Describes the configuration manager to perform.

[0207] At 1410, the UE or base station may determine a set of transmission beams for an uplink reference signal based on the beam scanning configuration. The operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be performed as described with reference to Figures 5 to 9 The described transmit beam component is performed.

[0208] At 1415, the UE or base station may send an uplink reference signal to a second wireless node in the wireless communication system via an uplink resource set and a transmission beam set according to the beam scanning configuration. The operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1415 may be performed as described with reference to Figures 5 to 9 The description is performed by a reference signal transmitter.

[0209] Fig.15 A flow chart illustrating a method 1500 for supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. For example, the operations of the method 1500 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. Figures 5 to 9 In some examples, the UE or base station may execute an instruction set to control the functional elements of the UE or base station to perform the functions described herein. Additionally or alternatively, the UE or base station may use dedicated hardware to perform various aspects of the functions described herein.

[0210] At 1505, the UE or base station may receive an indication of a configuration for interference measurement from a second wireless node or another wireless node in the wireless communication system. The operations of 1505 may be performed according to the methods described herein. In some examples, aspects of the operations of 1505 may be performed as described with reference to Figures 5 to 9 Configure the receiver to perform the described

[0211] At 1510, the UE or base station may determine a configuration for interference measurement for a first wireless node, the configuration indicating a set of uplink resources for an uplink reference signal for interference measurement and a beam scanning configuration for transmission of the uplink reference signal. The operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be performed as described with reference to Figures 5 to 9 Describes the configuration manager to perform.

[0212] At 1515, the UE or base station may determine a set of transmission beams for an uplink reference signal based on the beam scanning configuration. The operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be performed as described with reference to Figures 5 to 9 The described transmit beam component is performed.

[0213] At 1520, the UE or base station may send an uplink reference signal to a second wireless node in the wireless communication system via an uplink resource set and a transmission beam set according to the beam scanning configuration. The operations of 1520 may be performed according to the methods described herein. In some examples, aspects of the operations of 1520 may be performed as described with reference to Figures 5 to 9 The description is performed by a reference signal transmitter.

[0214] Fig.16 A flow chart illustrating a method 1600 for supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. For example, the operations of the method 1600 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. Figures 5 to 9 In some examples, the UE or base station may execute an instruction set to control the functional elements of the UE or base station to perform the functions described herein. Additionally or alternatively, the UE or base station may use dedicated hardware to perform various aspects of the functions described herein.

[0215] At 1605, the UE or base station may send a report indicating that the first wireless node supports the use of SRS configuration for interference measurement for the first wireless node. The operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be described with reference to Figures 5 to 9 The report transmitter described is executed.

[0216] At 1610, the UE or base station may determine a configuration for interference measurement for a first wireless node, the configuration indicating a set of uplink resources for an uplink reference signal for interference measurement and a beam scanning configuration for transmission of the uplink reference signal. The operations of 1610 may be performed according to the methods described herein. In some examples, aspects of the operations of 1610 may be performed as described with reference to Figures 5 to 9 Describes the configuration manager to perform.

[0217] At 1615, the UE or base station may determine a set of transmission beams for an uplink reference signal based on the beam scanning configuration. The operations of 1615 may be performed according to the methods described herein. In some examples, aspects of the operations of 1615 may be described with reference to Figures 5 to 9 The described transmit beam component is performed.

[0218] At 1620, the UE or base station may send an uplink reference signal to a second wireless node in the wireless communication system via an uplink resource set and a transmission beam set according to the beam scanning configuration. The operations of 1620 may be performed according to the methods described herein. In some examples, aspects of the operations of 1620 may be performed as described with reference to Figures 5 to 9 The description is performed by a reference signal transmitter.

[0219] Fig.17A flow chart illustrating a method 1700 for supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. For example, the operations of the method 1700 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. Figures 5 to 9 In some examples, the UE or base station may execute an instruction set to control the functional elements of the UE or base station to perform the functions described herein. Additionally or alternatively, the UE or base station may use dedicated hardware to perform various aspects of the functions described herein.

[0220] At 1705, the UE or base station may determine a configuration for interference measurement for a first wireless node, the configuration indicating a set of uplink resources for an uplink reference signal for interference measurement and a beam scanning configuration for transmission of the uplink reference signal. The operations of 1705 may be performed according to the methods described herein. In some examples, aspects of the operations of 1705 may be performed as described with reference to Figures 5 to 9 Describes the configuration manager to perform.

[0221] At 1710, the UE or base station may identify a codebook for interference measurement based on the beam scanning configuration, wherein the codebook is different from a codebook used for other communications performed by the first wireless node. The operations of 1710 may be performed according to the methods described herein. In some examples, aspects of the operations of 1710 may be described with reference to Figures 5 to 9 The described codebook components are implemented.

[0222] At 1715, the UE or base station may determine a set of transmission beams for an uplink reference signal based on the beam scanning configuration. The operations of 1715 may be performed according to the methods described herein. In some examples, aspects of the operations of 1715 may be performed as described with reference to Figures 5 to 9 The described transmit beam component is performed.

[0223] At 1720, the UE or base station may send an uplink reference signal to a second wireless node in the wireless communication system via an uplink resource set and a transmission beam set according to the beam scanning configuration. The operations of 1720 may be performed according to the methods described herein. In some examples, aspects of the operations of 1720 may be performed as described with reference to Figures 5 to 9 The description is performed by a reference signal transmitter.

[0224] Fig.18 A flow chart illustrating a method 1800 for supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The operations of the method 1800 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. For example, the operations of the method 1800 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. Figures 5 to 9 In some examples, the UE or base station may execute an instruction set to control the functional elements of the UE or base station to perform the functions described herein. Additionally or alternatively, the UE or base station may use dedicated hardware to perform various aspects of the functions described herein.

[0225] At 1805, the UE or base station may identify a configuration for interference measurement for the first wireless node, the configuration indicating a set of uplink resources configured for the second wireless node and a beam scanning configuration for the second wireless node. The operations of 1805 may be performed according to the methods described herein. In some examples, aspects of the operations of 1805 may be performed as described with reference to Figures 5 to 9 Describes the configuration manager to perform.

[0226] At 1810, the UE or base station may monitor a set of uplink resources configured for a set of uplink reference signals from a second wireless node via a set of receive beams according to a beam scanning configuration. The operations of 1810 may be performed according to methods described herein. In some examples, aspects of the operations of 1810 may be performed as described with reference to Figures 5 to 9 Describes the resource monitor to perform.

[0227] At 1815, the UE or base station may perform interference measurements on the uplink reference signal set based on the monitoring. The operations of 1815 may be performed according to the methods described herein. In some examples, aspects of the operations of 1815 may be performed as described with reference to Figures 5 to 9 Described interference manager to perform.

[0228] Fig.19 A flow chart illustrating a method 1900 for supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The operations of the method 1900 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. For example, the operations of the method 1900 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. Figures 5 to 9 In some examples, the UE or base station may execute an instruction set to control the functional elements of the UE or base station to perform the functions described herein. Additionally or alternatively, the UE or base station may use dedicated hardware to perform various aspects of the functions described herein.

[0229] At 1905, the UE or base station may identify a configuration for interference measurement for the first wireless node, the configuration indicating a set of uplink resources configured for the second wireless node and a beam scanning configuration for the second wireless node. The operations of 1905 may be performed according to the methods described herein. In some examples, aspects of the operations of 1905 may be performed as described with reference to Figures 5 to 9 Describes the configuration manager to perform.

[0230] At 1910, the UE or base station may monitor a set of uplink resources configured for a set of uplink reference signals from a second wireless node via a set of receive beams according to a beam scanning configuration. The operations of 1910 may be performed according to methods described herein. In some examples, aspects of the operations of 1910 may be performed as described with reference to Figures 5 to 9 Describes the resource monitor to perform.

[0231] At 1915, the UE or base station may perform interference measurements on the uplink reference signal set based on the monitoring. The operations of 1915 may be performed according to the methods described herein. In some examples, aspects of the operations of 1915 may be performed as described with reference to Figures 5 to 9 Described interference manager to perform.

[0232] At 1920, the UE or base station may schedule communications for the first wireless node or the third wireless node based on the interference measurement. The operations of 1920 may be performed according to the methods described herein. In some examples, aspects of the operations of 1920 may be performed as described with reference to Figures 5 to 9 The described scheduler is executed.

[0233] Fig. 20 A flow chart illustrating a method 2000 for supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The operations of the method 2000 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. For example, the operations of the method 2000 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. Figures 5 to 9 In some examples, the UE or base station may execute an instruction set to control the functional elements of the UE or base station to perform the functions described herein. Additionally or alternatively, the UE or base station may use dedicated hardware to perform various aspects of the functions described herein.

[0234] At 2005, the UE or base station may identify a configuration for interference measurement for a first wireless node, the configuration indicating a set of uplink resources configured for a second wireless node and a beam scanning configuration for the second wireless node. The operations of 2005 may be performed according to the methods described herein. In some examples, aspects of the operations of 2005 may be performed as described with reference to Figures 5 to 9 Describes the configuration manager to perform.

[0235] At 2010, the UE or base station may select a set of receive beams from receive beams supported by the first wireless node based on the communication direction of the first wireless node. The operations of 2010 may be performed according to the methods described herein. In some examples, aspects of the operations of 2010 may be performed as described with reference to Figures 5 to 9The receive beam selector described above is implemented as follows.

[0236] At 2015, the UE or base station may monitor a set of uplink resources configured for a set of uplink reference signals from a second wireless node via a set of receive beams according to the beam scanning configuration. The operations of 2015 may be performed according to the methods described herein. In some examples, aspects of the operations of 2015 may be performed as described with reference to Figures 5 to 9 Describes the resource monitor to perform.

[0237] At 2020, the UE or base station may perform interference measurement on the uplink reference signal set based on the monitoring. The operations of 2020 may be performed according to the methods described herein. In some examples, aspects of the operations of 2020 may be performed as described with reference to Figures 5 to 9 Described interference manager to perform.

[0238] Fig.21 A flow chart illustrating a method 2100 for supporting interference measurement configuration in a wireless system according to aspects of the present disclosure is shown. The operations of the method 2100 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 2100 may be implemented by a base station 105 or components thereof as described herein. Figures 10 to 13 In some examples, the base station may execute an instruction set to control functional elements of the base station to perform the functions described herein. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described herein.

[0239] At 2105, the base station may send a configuration for interference management to a first wireless node of the wireless communication system, the configuration indicating an uplink resource set and a beam scanning configuration for an uplink reference signal set. The operations of 2105 may be performed according to the methods described herein. In some examples, aspects of the operations of 2105 may be performed as described with reference to Figures 10 to 13 Describes how to configure the transmitter to perform.

[0240] At 2110, the base station may receive a report indicating interference measurements from a second wireless node according to the configuration. The operations of 2110 may be performed according to the methods described herein. In some examples, aspects of the operations of 2110 may be performed as described with reference to Figures 10 to 13 The report receiver described is executed.

[0241] At 2115, the base station may send scheduling information to the first wireless node or the second wireless node based on the report, the scheduling information including resource allocation for communication for the first wireless node or the second wireless node. The operations of 2115 may be performed according to the methods described herein. In some examples, aspects of the operations of 2115 may be performed as described with reference to Figures 10 to 13The described scheduling information transmitter is executed.

[0242] It should be noted that the methods described herein describe possible implementations, and that operations and steps may be rearranged or otherwise modified, and other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0243] The following provides a summary of various aspects of the disclosure:

[0244] Aspect 1: A method for wireless communication at a first wireless node in a wireless communication system, comprising: determining a configuration for interference measurement for the first wireless node, the configuration indicating an uplink resource set for an uplink reference signal used for the interference measurement and a beam scanning configuration for transmission of the uplink reference signal; determining a transmission beam set for the uplink reference signal based at least in part on the beam scanning configuration; and sending the uplink reference signal to a second wireless node in the wireless communication system via the uplink resource set and the transmission beam set according to the beam scanning configuration.

[0245] Aspect 2: The method according to aspect 1 further includes: receiving an indication of the configuration for interference measurement from the second wireless node or another wireless node in the wireless communication system.

[0246] Aspect 3: The method according to aspect 2, wherein the configuration is received semi-statically or dynamically.

[0247] Aspect 4: The method according to any one of Aspects 2 to 3, wherein the indication specifies an SRS configuration for interference measurement, and the SRS configuration is different from an SRS configuration for beam management.

[0248] Aspect 5: The method according to any one of aspects 1 to 4 further includes: sending a report indicating that the first wireless node supports the use of SRS configuration for interference measurement for the first wireless node.

[0249] Aspect 6: The method according to aspect 5, wherein the report is sent semi-statically or dynamically.

[0250] Aspect 7: A method according to any one of Aspects 1 to 6, wherein the configuration indicates one or more resource sets configured for interference measurement for the first wireless node, and the one or more resource sets are different from the resource sets configured for beam management for the first wireless node.

[0251] Aspect 8: The method according to any one of Aspects 1 to 7 further includes: determining the transmission beam set as all transmission beams supported by the first wireless node; and sending the uplink reference signal via all the transmission beams supported by the first wireless node.

[0252] Aspect 9: The method according to any one of Aspects 1 to 8 also includes: identifying a codebook for interference measurement based at least in part on the beam scanning configuration, wherein the codebook is different from a codebook used for other communications performed by the first wireless node.

[0253] Aspect 10: The method according to any one of Aspects 1 to 9 also includes: determining a direction of communication for the first wireless node; determining the transmission beam set based at least in part on the direction; and using the transmission beam set to send the uplink reference signal in the direction of communication.

[0254] Aspect 11: The method according to aspect 10, wherein the direction is associated with one or more parent nodes or one or more child nodes of the first wireless node.

[0255] Aspect 12: The method according to any one of aspects 10 to 11, wherein the direction is associated with one or more backhaul links of the first wireless node.

[0256] Aspect 13: The method according to any one of Aspects 1 to 12 further includes: using the transmission beam set to send an indication of the number of transmission beams used for beam scanning via the uplink resource set.

[0257] Aspect 14: The method according to aspect 13 further includes: receiving the configuration for the interference measurement in response to the indication, the configuration allocating resources for interference measurement based at least in part on the number of the transmission beams.

[0258] Aspect 15: The method according to any one of Aspects 13 to 14, wherein the indication is sent semi-statically or dynamically.

[0259] Aspect 16: The method according to any one of Aspects 1 to 15 further includes: receiving the configuration for the interference measurement for the first wireless node, the configuration indicating a resource allocation for SRS resources, the resource allocation indicating one or more consecutive symbols within a time slot for sending the uplink reference signal.

[0260] Aspect 17: The method according to any one of Aspects 1 to 16 further includes: receiving an uplink reference signal configuration for a third wireless node in the wireless communication system; monitoring one or more uplink reference signals from the third wireless node based at least in part on the uplink reference signal configuration; and performing interference measurement of the third wireless node based at least in part on the one or more uplink reference signals.

[0261] Aspect 18: The method according to aspect 17, wherein the uplink reference signal configuration for the third wireless node is received from the second wireless node or the third wireless node.

[0262] Aspect 19: The method according to any one of aspects 1 to 18, wherein the first wireless node and the second wireless node are in a parent-child relationship.

[0263] Aspect 20: A method for wireless communication at a first wireless node in a wireless communication system, comprising: identifying a configuration for interference measurement for the first wireless node, the configuration indicating an uplink resource set configured for a second wireless node and a beam scanning configuration for the second wireless node; monitoring the uplink resource set configured for an uplink reference signal set from the second wireless node via a receiving beam set according to the beam scanning configuration; and performing interference measurement on the uplink reference signal set based at least in part on the monitoring.

[0264] Aspect 21: The method according to aspect 20 further includes: scheduling communication for the first wireless node or the third wireless node based at least in part on the interference measurement.

[0265] Aspect 22: The method according to any one of aspects 20 to 21, wherein identifying the configuration for interference measurement comprises: receiving an indication of the configuration for interference measurement for the first wireless node from a central unit.

[0266] Aspect 23: The method according to any one of aspects 20 to 22 also includes: selecting the set of receive beams from receive beams supported by the first wireless node based at least in part on the communication direction of the first wireless node.

[0267] Aspect 24: The method according to aspect 23, wherein the communication direction corresponds to a parent node or a child node of the first wireless node, or one or more backhaul links associated with the first wireless node.

[0268] Aspect 25: The method according to any one of aspects 20 to 24, further comprising: sending a report indicating the result of the interference measurement to at least one of the second wireless node or a central unit.

[0269] Aspect 26: A method according to any one of Aspects 20 to 25, wherein the configuration indicates a transmission power associated with the uplink reference signal set, and the uplink reference signal set includes one or more sounding reference signals (SRS).

[0270] Aspect 27: A method for wireless communication at a central unit of a wireless communication system, comprising: sending a configuration for interference management to a first wireless node of the wireless communication system, the configuration indicating an uplink resource set and a beam scanning configuration for an uplink reference signal set; receiving a report indicating interference measurement from a second wireless node based on the configuration; and sending scheduling information to the first wireless node or the second wireless node based at least in part on the report, the scheduling information including resource allocation for communication for the first wireless node or the second wireless node.

[0271] Aspect 28: The method according to aspect 27, wherein the configuration indicates a set of receive beams for the second wireless node to be used for the interference measurement.

[0272] Aspect 29: The method according to any one of aspects 27 to 28, wherein the first wireless node is a child node or a grandchild node of the central unit.

[0273] Aspect 30: An apparatus for wireless communication at a first wireless node in a wireless communication system, comprising: a processor; a memory coupled to the processor; and instructions, which are stored in the memory and can be executed by the processor to enable the apparatus to perform a method according to any one of Aspects 1 to 19.

[0274] Aspect 31: An apparatus for wireless communication at a first wireless node in a wireless communication system, comprising at least one unit for performing a method according to any one of aspects 1 to 19.

[0275] Aspect 32: 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 19.

[0276] Aspect 33: An apparatus for wireless communication at a first wireless node in a wireless communication system, comprising: a processor; a memory coupled to the processor; and instructions, which are stored in the memory and can be executed by the processor to enable the apparatus to perform a method according to any one of Aspects 20 to 26.

[0277] Aspect 34: 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 20 to 26.

[0278] Aspect 35: 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 20 to 26.

[0279] Aspect 36: An apparatus for wireless communication at a central unit of 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 27 to 29.

[0280] Aspect 37: An apparatus for wireless communication at a central unit of a wireless communication system, comprising at least one unit for performing a method according to any one of aspects 27 to 29.

[0281] Aspect 38: A non-transitory computer-readable medium storing code for wireless communication at a central unit of a wireless communication system, the code comprising instructions executable by a processor to perform the method according to any one of aspects 27 to 29.

[0282] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0283] 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 description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0284] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or executed using a general purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration).

[0285] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or sent through a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these items. Features that implement the functions may also be physically located at various locations, including being distributed so that parts of the functions are implemented at different physical locations.

[0286] Computer-readable medium includes both non-transitory computer storage medium and communication medium, and communication medium includes any medium that promotes computer program to be transmitted from one place to another place.Non-transitory storage medium can be any available medium that can be accessed by general-purpose computer or special-purpose computer.By way of example and not limitation, non-transitory computer-readable medium can include 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 unit and any other non-transitory medium that can be accessed by general-purpose or special-purpose computer or general-purpose or special-purpose processor in the form of instruction or data structure.In addition, any connection is appropriately referred to as computer-readable medium.For example, if software is to send from website, server or other remote source using coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then coaxial cable, optical fiber cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of computer-readable medium. As used herein, disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, wherein disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0287] As used herein (including in the claims), "or" as used in a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of "at least one of A, B, or C" means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based at least in part 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."

[0288] In the accompanying drawings, similar components or features may have the same reference numeral. In addition, various components of the same type may be distinguished by following the reference numeral with a dash and a second reference numeral, the second reference numeral being used to distinguish between similar components. If only the first reference numeral is used in the specification, the description applies to any of the similar components having the same first reference numeral, without regard to the second reference numeral or other subsequent reference numerals.

[0289] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations, and do not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "advantageous over other examples." For the purpose of providing an understanding of the described techniques, the detailed description includes specific details. However, these techniques may be practiced without these specific details. In some cases, well-known structures and devices are shown in the form of diagrams to avoid obscuring the concepts of the described examples.

[0290] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. It will be apparent to those skilled in the art that various modifications to the present disclosure will be apparent, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is given the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for communication at a first wireless node in an integrated access and backhaul system, comprising: sending, from a mobile terminal of the first wireless node and via a first backhaul link, a report indicating that the first wireless node supports use of a sounding reference signal (SRS) for interference measurement; receiving, based at least in part on the report, at the mobile terminal of the first wireless node and subsequent to the sending of the report, an indication of a configuration for interference measurement, the configuration indicating one or more sets of SRS resources for interference measurement and a beam scanning configuration for transmission of the SRS, wherein the one or more sets of SRS resources configured for interference measurement are different from one or more sets of SRS resources configured for beam management; as well as Based at least in part on the beam scanning configuration, the SRS is sent from the mobile terminal of the first wireless node and to the second wireless node in the integrated access and backhaul system via a second backhaul link, via the one or more SRS resource sets, and using a transmission beam set selected by the mobile terminal of the first wireless node.

2. The method according to claim 1, further comprising: The indication of the configuration for interference measurement is received from the second wireless node or another wireless node in the integrated access and backhaul system.

3. The method according to claim 2, wherein: The configuration is received semi-statically or dynamically.

4. The method according to claim 1, wherein: The reports are sent semi-statically or dynamically.

5. The method according to claim 1, further comprising: Determining the set of transmission beams as all transmission beams supported by the first wireless node; as well as The SRS is sent via all of the transmission beams supported by the first wireless node.

6. The method according to claim 1, further comprising: A codebook is identified for the interference measurement based at least in part on the beam scanning configuration, wherein the codebook is different from a codebook used for other communications by the first wireless node.

7. The method according to claim 1, further comprising: determining a direction for communication of the first wireless node; determining the set of transmission beams based at least in part on the direction; as well as The SRS is transmitted using the set of transmission beams in the direction of communication.

8. The method according to claim 7, wherein: The direction is associated with one or more parent nodes or one or more child nodes of the first wireless node in the integrated access and backhaul system.

9. The method according to claim 7, wherein: The direction is associated with one or more backhaul links of the first wireless node.

10. The method according to claim 1, further comprising: An indication of a number of transmission beams used for beam scanning is sent via the SRS using the transmission beam set.

11. The method according to claim 10, further comprising: The configuration for interference measurement is received in response to the indication, the configuration allocating resources for the interference measurement based at least in part on the number of the transmission beams.

12. The method according to claim 10, wherein: The indication is sent semi-statically or dynamically.

13. The method according to claim 1, further comprising: The configuration for interference measurement for the first wireless node is received, the configuration indicating a resource allocation for SRS resources, the resource allocation indicating one or more consecutive symbols within a time slot for transmitting SRS.

14. The method according to claim 1, further comprising: receiving an SRS configuration for a third wireless node in the integrated access and backhaul system; monitoring one or more SRS from the third wireless node based at least in part on the SRS configuration; as well as Interference measurements are performed for the third wireless node based at least in part on the one or more SRSs.

15. The method according to claim 14, wherein: The SRS configuration for the third wireless node is received from the second wireless node or the third wireless node.

16. The method according to claim 1, wherein: The first wireless node and the second wireless node are in a parent-child relationship in the integrated access and backhaul system.

17. A method for communication at a first wireless node in an integrated access and backhaul system, comprising: sending, from a mobile terminal of the first wireless node and via a first backhaul link, a report indicating that the first wireless node supports interference measurement using a sounding reference signal (SRS); receiving, at the mobile terminal of the first wireless node and subsequent to sending the report, an indication of a configuration for interference measurement based at least in part on the report, the configuration indicating one or more sets of SRS resources configured for interference measurement and a beam scanning configuration for the SRS, wherein the one or more sets of SRS resources configured for interference measurement are different from one or more sets of SRS resources configured for beam management; monitoring the one or more sets of SRS resources for the SRS from a second wireless node via a set of receive beams associated with a distributed unit of the first wireless node according to the beam scanning configuration; and The interference measurement is performed on the SRS at the distributed unit associated with the first wireless node based at least in part on the monitoring.

18. The method according to claim 17, further comprising: Communications for the first wireless node or a third wireless node are scheduled based at least in part on the interference measurement.

19. The method according to claim 17, wherein: Identifying the configuration for interference measurement includes: The indication of the configuration for interference measurement for the first wireless node is received from a central unit.

20. The method of claim 17, further comprising: The set of receive beams is selected from receive beams supported by the first wireless node based at least in part on a communication direction of the first wireless node.

21. The method according to claim 20, wherein: The communication direction corresponds to a parent node or a child node of the first wireless node, or one or more backhaul links associated with the first wireless node.

22. The method of claim 17, further comprising: A report indicating results of the interference measurement is sent to at least one of the second wireless node or a central unit.

23. The method of claim 17, wherein: The configuration indicates a transmission power associated with the SRS.

24. A method for communication at a central unit of an integrated access and backhaul system, comprising: receiving, via a first backhaul link, a first report indicating that the first wireless node, the second wireless node, or both support use of a sounding reference signal (SRS) for interference measurement; sending, based at least in part on the report, via the first backhaul link and to a mobile terminal associated with the first wireless node of the integrated access and backhaul system and after receiving the first report, a configuration for interference management, the configuration indicating one or more sets of SRS resources for interference measurement and a beam scanning configuration for the SRS, wherein the one or more sets of SRS resources configured for interference measurement are different from the one or more sets of SRS resources configured for beam management; receiving, via a second backhaul link and from a distributed unit associated with the second wireless node, a second report indicating interference measurements in accordance with the configuration; and Scheduling information is sent to the first wireless node or the second wireless node via the first backhaul link or the second backhaul link based at least in part on the second report, the scheduling information including resource allocations for communication for the first wireless node or the second wireless node.

25. The method according to claim 24, wherein: The configuration indicates a set of receive beams for the second wireless node to be used for the interference measurement.

26. The method according to claim 24, wherein: The first wireless node is a child node or a grandchild node of the central unit.

27. An apparatus for wireless communication at a first wireless node in an integrated access and backhaul system, comprising: means for sending, from a mobile terminal of the first wireless node and via a first backhaul link, a report indicating that the first wireless node supports use of a sounding reference signal (SRS) for interference measurement; means for receiving, based at least in part on the report, at the mobile terminal of the first wireless node and subsequent to the sending of the report, an indication of a configuration for interference measurement, the configuration indicating one or more sets of SRS resources for interference measurement and a beam scanning configuration for transmission of the SRS, wherein the one or more sets of SRS resources configured for interference measurement are different from one or more sets of SRS resources configured for beam management; as well as A unit for sending the SRS from the mobile terminal of the first wireless node and to a second wireless node in the integrated access and backhaul system via a second backhaul link, via the one or more SRS resource sets and using a transmission beam set selected by the mobile terminal of the first wireless node based at least in part on the beam scanning configuration.

28. The apparatus according to claim 27, further comprising: Means for receiving the indication of the configuration for interference measurement from the second wireless node or another wireless node in the integrated access and backhaul system.

29. The apparatus of claim 27, further comprising: means for determining the set of transmission beams as all transmission beams supported by the first wireless node; as well as Means for transmitting the SRS via all of the transmission beams supported by the first wireless node.

30. The apparatus of claim 27, further comprising: Means for identifying a codebook for the interference measurement based at least in part on the beam scanning configuration, wherein the codebook is different from a codebook used for other communications by the first wireless node.

31. The apparatus of claim 27, further comprising: means for determining a direction for communication of the first wireless node; means for determining the set of transmission beams based at least in part on the direction; as well as Means for transmitting the SRS using the set of transmission beams in the direction of communication.

32. The apparatus of claim 27, further comprising: Means for transmitting, via the SRS, an indication of a number of transmit beams for beam scanning using the set of transmit beams.

33. The apparatus of claim 32, further comprising: Means for receiving the configuration for interference measurement in response to the indication, the configuration allocating resources for the interference measurement based at least in part on the number of transmit beams.

34. The apparatus of claim 27, further comprising: Means for receiving the configuration for interference measurement for the first wireless node, the configuration indicating a resource allocation for SRS resources, the resource allocation indicating one or more consecutive symbols within a time slot for transmitting SRS.

35. The apparatus of claim 27, further comprising: means for receiving an SRS configuration for a third wireless node in the integrated access and backhaul system; means for monitoring one or more SRS from the third wireless node based at least in part on the SRS configuration; as well as Means for performing interference measurements for the third wireless node based at least in part on the one or more SRSs.

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