Iterative Self-Interference Measurement Using Power Ramping

Abstract

A configuration for a wireless device to perform iterations of SIM to detect clutter echoes in order to improve a configuration for the SIM. The device performs the SIM for multiple beam pairs based on a first transmit power. The device performs the iterations of the SIM for one or more beam pairs that meet a criterion. The iterations of the SIM are based on a second transmit power that is greater than the first transmit power.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Provisional Application No. 63 / 033,726, filed on June 2, 2020, entitled “Iterative Self Interference Measurement with Power Ramping,” and U.S. Patent Application No. 17 / 319,625, filed on May 13, 2021, entitled “Iterative Self Interference Measurement with Power Ramping,” both of which are expressly incorporated herein by reference in their entirety. Technical Field

[0003] The present disclosure relates generally to communication systems, and more particularly to configuration of self-interference measurement procedures for wireless communication systems.

[0004] introduction

[0005] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple-access technologies include code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single-carrier frequency division multiple access (SC-FDMA), and time division synchronous code division multiple access (TD-SCDMA).

[0006] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, region, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT)) and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra-reliable low latency communications (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements to 5G NR technology. These improvements may also be applicable to other multiple access technologies and telecommunication standards that employ these technologies.

[0007] Brief Overview

[0008] The following is a brief summary of one or more aspects to provide a basic understanding of such aspects. This summary is not an exhaustive overview of all conceivable aspects and is neither intended to identify key or critical elements of all aspects nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

[0009] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be an apparatus at a first wireless device. The apparatus may be a processor and / or a modem at the first wireless device, or the first wireless device itself. The apparatus performs self-interference measurement (SIM) for a plurality of downlink (DL) and uplink (UL) beam pairs based on a first transmit power in full-duplex transmission. The apparatus determines one or more beam pairs that meet a criterion. The apparatus performs iterations of SIM for the one or more beam pairs that meet the criterion, wherein the iterations of SIM are based on a second transmit power increased from the first transmit power.

[0010] In one aspect of the present disclosure, a method, computer-readable medium, and apparatus are provided. The apparatus may be a device at a first wireless device. The apparatus may be a processor and / or modem at the first wireless device or the first wireless device itself. The apparatus configures a self-interference measurement (SIM) configuration for a plurality of downlink (DL) and uplink (UL) beam pairs based on a first transmit power in full-duplex transmission. The apparatus transmits the SIM configuration to a second wireless device. The apparatus receives, from the second wireless device, cross-beam measurements for top beam pair candidates and one or more beam pairs that meet criteria based on SIM performed at the first transmit power.

[0011] To accomplish the foregoing and related ends, one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and accompanying drawings set forth in detail certain illustrative features of the one or more aspects. However, these features are indicative of but a few of the various ways in which the principles of the various aspects may be employed, and this description is intended to encompass all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network.

[0014] Figure 2A is a diagram illustrating an example of a first frame according to various aspects of the present disclosure.

[0015] Figure 2B is a diagram illustrating an example of DL channels within a subframe according to various aspects of the present disclosure.

[0016] Figure 2C is a diagram illustrating an example of a second frame according to various aspects of the present disclosure.

[0017] Figure 2D is a diagram illustrating an example of UL channels within a subframe according to various aspects of the present disclosure.

[0018] Figure 3 is a diagram illustrating an example of a base station and a user equipment (UE) in an access network.

[0019] Figure 4 is a diagram illustrating an example IAB network.

[0020] Figure 5 is a diagram illustrating an example IAB network and its components.

[0021] Figures 6A-6C is a diagram illustrating an example of full-duplex communication.

[0022] Figure 7 is a call flow diagram of signaling between a first wireless device and a second wireless device according to certain aspects of the present disclosure.

[0023] Figure 8 is a flow chart of a wireless communication method.

[0024] Figure 9 is a flow chart of a wireless communication method.

[0025] Figure 10 is a diagram illustrating an example of a hardware implementation for an example apparatus.

[0026] Figure 11 is a flow chart of a wireless communication method.

[0027] Figure 12 is a flow chart of a wireless communication method.

[0028] Figure 13 is a diagram illustrating an example of a hardware implementation for an example apparatus.

[0029] Detailed description

[0030] The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. This detailed description includes specific details to provide a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid overstating such concepts.

[0031] Several aspects of telecommunications systems will now be presented with reference to various apparatus and methods. These apparatus and methods are described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively, "elements"). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0032] As an example, an element, or any part of an element, or any combination of elements can be implemented as a "processing system" comprising one or more processors. Examples of processors include: a microprocessor, a microcontroller, a graphics processing unit (GPU), a central processing unit (CPU), an application processor, a digital signal processor (DSP), a reduced instruction set computing (RISC) processor, a system on a chip (SoC), a baseband processor, a field programmable gate array (FPGA), a programmable logic device (PLD), a state machine, a gating logic, a discrete hardware circuit, and other suitable hardware configured to perform the various functionalities described throughout this disclosure. One or more processors in a processing system can execute software. Software should be broadly interpreted to mean instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether it is described in software, firmware, middleware, microcode, hardware description language, or other terms.

[0033] Accordingly, in one or more example embodiments, the functions described can be implemented in hardware, software, or any combination thereof. If implemented in software, each function can be stored or encoded as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media. The storage medium can be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, a combination of these types of computer-readable media, or any other medium that can be used to store computer-accessible instructions or data structures in the form of computer-executable code.

[0034] Although various aspects are described in this application by explaining some examples, it will be understood by those skilled in the art that additional implementations and use cases can be generated in many different arrangements and scenarios. The innovation described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, each implementation and / or use can be generated via an integrated chip implementation and other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / shopping equipment, medical equipment, devices that enable artificial intelligence (AI), etc.). Although some examples may or may not be specifically for each use case or application, the wide applicability of the described innovation may occur. The scope of each implementation can range from chip-level or module components to non-module, non-chip-level implementations, and further to aggregated, distributed or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovation. In some actual environments, the equipment incorporating the various aspects and features described may also include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals necessarily include several components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.). The innovations described herein are intended to be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, end-user devices, and the like, of various sizes, shapes, and configurations.

[0035] Figure 1 1 is a diagram illustrating an example of a wireless communication system and access network 100. The wireless communication system and access network 100 may include one or more UEs 104 in communication with a base station 102 or 180. The system may include a UE 104 in communication with other UEs 104. The wireless communication system and access network 100 may include an integrated access and backhaul (IAB) network that includes multiple cellular cells in communication with each other to provide access and backhaul to a core network such as a core network 190 or an evolved packet core (EPC) 160. The core network 190 may be a 5G core (5GC), a core network supporting new radio (NR) communications, or another type of core network. The IAB network may include one or more IAB nodes 103. The IAB nodes may exchange communications with other IAB nodes 103, with base stations 102 or 180, and / or with UEs 104.

[0036] Refer again Figure 1In some aspects, a wireless device (such as a UE 104 or an IAB node 103) may be configured to perform iterations of SIM to detect clutter echoes in order to improve the configuration for SIM. The IAB node 103 may be an IAB node, a child node, or a parent node. For example, the UE 104 or IAB node 103 may include an iteration component 198 configured to perform iterations of SIM for one or more beam pairs. The UE 104 or IAB node may perform SIM for multiple beam pairs based on a first transmit power. For example, the UE 104 may receive a SIM configuration from a base station 102 or 180 or from an IAB node 103. The IAB node 103 may receive the SIM configuration from a parent IAB node or from a base station 102 or 180. The UE 104 or IAB node may determine one or more beam pairs that meet a criterion. The UE 104 or IAB node may perform iterations of SIM for the one or more beam pairs that meet the criterion, where the iterations of SIM may be based on a second transmit power that is increased from the first transmit power or from a previous transmit power.

[0037] Refer again Figure 1 In certain aspects, the base station 102 or 180 or the IAB node 103 may be configured to configure a SIM configuration for a plurality of beam pairs based on a first transmit power. For example, the base station 102 or 180 or the IAB node 103 may include a configuration component 199 configured to configure a SIM configuration for a plurality of beam pairs. The base station 102 or 180 or the IAB node 103 may configure the SIM configuration for a plurality of beam pairs based on the first transmit power. The base station 102 or 180 or the IAB node 103 may transmit the SIM configuration to the second wireless device. The base station 102 or 180 or the IAB node 103 may receive, from the second wireless device, cross-beam measurements for the top beam pair candidate and one or more beam pairs that meet the criteria based on SIM performed with the first transmit power.

[0038] Although examples in the following description may focus on 5G NR, the concepts described herein are applicable to other similar areas such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0039] The wireless communication system (also known as a wireless wide area network (WWAN)) includes a base station 102, a UE 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). A macro cell includes a base station. Small cells include femto cells, pico cells, and micro cells.

[0040] Base stations 102 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with the EPC 160 via a first backhaul link 132 (e.g., an S1 interface). Base stations 102 configured for 5G NR (collectively referred to as the Next Generation RAN (NG-RAN)) can interface with the core network 190 via a second backhaul link 184. Among other functions, the base stations 102 can perform one or more of the following: delivery of user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment tracking, RAN information management (RIM), paging, positioning, and delivery of alert messages. The base stations 102 can communicate with each other directly or indirectly (eg, through the EPC 160 or the core network 190) over a third backhaul link 134 (eg, an X2 interface). The first backhaul link 132, the second backhaul link 184, and the third backhaul link 134 can be wired or wireless.

[0041] Base stations 102 can communicate wirelessly with UEs 104. Each base station 102 can provide communication coverage for a respective geographic coverage area 110. There may be overlapping geographic coverage areas 110. For example, a small cell 102′ can have a coverage area 110′ that overlaps with the coverage area 110 of one or more macro base stations 102. A network that includes both small cells and macro cells can be referred to as a heterogeneous network. A heterogeneous network can also include a home evolved Node B (eNB) (HeNB), which can provide service to a restricted group known as a closed subscriber group (CSG). The communication link 120 between the base station 102 and the UE 104 can include uplink (UL) (also known as reverse link) transmissions from the UE 104 to the base station 102 and / or downlink (DL) (also known as forward link) transmissions from the base station 102 to the UE 104. The communication link 120 can utilize multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. These communication links may be over one or more carriers. For each carrier allocated in the carrier aggregation for a total of up to Yx MHz (x component carriers) for transmission in each direction, the base station 102 / UE 104 may use spectrum with a bandwidth of up to Y MHz (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.). These carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated to DL compared to UL). The component carriers may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell), and the secondary component carriers may be referred to as secondary cells (SCells).

[0042] Some UEs 104 may communicate with each other using device-to-device (D2D) communication links 158. The D2D communication links 158 may use DL / UL WWAN spectrum. The D2D communication links 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). D2D communication may be accomplished through various wireless D2D communication systems, such as, for example, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0043] The wireless communication system may further include a Wi-Fi access point (AP) 150 in communication with a Wi-Fi station (STA) 152 via a communication link 154, e.g., in the 5 GHz unlicensed spectrum. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) to determine whether the channel is available prior to communication.

[0044] Small cell 102′ can operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, small cell 102′ can adopt NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) used by Wi-Fi AP 150. Small cell 102′ adopting NR in unlicensed spectrum can improve access network coverage and / or increase access network capacity.

[0045] The electromagnetic spectrum is typically subdivided into various classes, bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz–7.125 GHz) and FR2 (24.25 GHz–52.6 GHz). Although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the “sub-6 GHz” band in various documents and articles. Similar naming issues sometimes arise with respect to FR2, which is often (interchangeably) referred to as the “millimeter wave” band in various documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as the “millimeter wave” band by the International Telecommunication Union (ITU).

[0046] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands of these mid-band frequencies as frequency range designation FR3 (7.125 GHz–24.25 GHz). Frequency bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and thus can effectively extend the features of FR1 and / or FR2 to mid-band frequencies. Additionally, higher frequency bands are currently being explored to extend 5G NR operation to above 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz–71 GHz), FR4 (52.6 GHz–114.25 GHz), and FR5 (114.25 GHz–300 GHz). Each of these higher frequency bands falls within the EHF band.

[0047] In view of the above aspects, unless otherwise specifically stated, it should be understood that the term sub-6 GHz, etc., if used herein, can be broadly referred to as frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that the term "millimeter wave", etc., if used herein, can be broadly referred to as frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that the term "millimeter wave", etc., if used herein, can be broadly referred to as frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1 and / or FR5, or may be within the EHF band.

[0048] Whether a small cell 102' or a macro cell (e.g., a macro base station), base station 102 may include and / or be referred to as an eNB, a g Node B (gNB), or another type of base station. Some base stations, such as gNB 180, may operate in the traditional sub-6 GHz spectrum, in millimeter wave frequencies, and / or near millimeter wave frequencies to communicate with UE 104. When gNB 180 operates in millimeter wave frequencies or near millimeter wave frequencies, gNB 180 may be referred to as a millimeter wave base station. Millimeter wave base station 180 may utilize beamforming 182 with UE 104 to compensate for path loss and short range. Base station 180 and UE 104 may each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays, to facilitate beamforming.

[0049] Base station 180 may transmit beamformed signals in one or more transmit directions 182′ to UE 104. UE 104 may receive beamformed signals from base station 180 in one or more receive directions 182″. UE 104 may also transmit beamformed signals to base station 180 in one or more transmit directions. Base station 180 may receive beamformed signals from UE 104 in one or more receive directions. Base station 180 / UE 104 may perform beam training to determine the best receive direction and transmit direction for each of base station 180 / UE 104. The transmit direction and receive direction of base station 180 may be the same or different. The transmit direction and receive direction of UE 104 may be the same or different.

[0050] EPC 160 may include a Mobility Management Entity (MME) 162, other MMEs 164, a Serving Gateway 166, a Multimedia Broadcast Multicast Service (MBMS) Gateway 168, a Broadcast Multicast Service Center (BM-SC) 170, and a Packet Data Network (PDN) Gateway 172. MME 162 may be in communication with a Home Subscriber Server (HSS) 174. MME 162 is a control node that handles signaling between UE 104 and EPC 160. Generally speaking, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are passed through Serving Gateway 166, which itself is connected to PDN Gateway 172. PDN Gateway 172 provides UE IP address allocation and other functions. PDN Gateway 172 and BM-SC 170 are connected to IP Services 176. IP Services 176 may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), PS streaming services, and / or other IP services. The BM-SC 170 provides functionality for provisioning and delivering MBMS user services. The BM-SC 170 serves as the entry point for content providers' MBMS transmissions, authorizes and initiates MBMS bearer services within the Public Land Mobile Network (PLMN), and schedules MBMS transmissions. The MBMS Gateway 168 distributes MBMS traffic to base stations 102 within the Multicast Broadcast Single Frequency Network (MBSFN) area that broadcasts a specific service. It is also responsible for session management (start / stop) and collecting eMBMS-related charging information.

[0051] The core network 190 may include an access and mobility management function (AMF) 192, other AMFs 193, a session management function (SMF) 194, and a user plane function (UPF) 195. The AMF 192 may be in communication with a unified data management (UDM) 196. The AMF 192 is a control node that handles signaling between the UE 104 and the core network 190. Generally speaking, the AMF 192 provides QoS flow and session management. All user Internet Protocol (IP) packets are passed through the UPF 195. The UPF 195 provides UE IP address allocation and other functions. The UPF 195 is connected to the IP services 197. The IP services 197 may include the Internet, an intranet, an IP multimedia subsystem (IMS), packet switched (PS) streaming (PSS) services, and / or other IP services.

[0052] A base station may include and / or be referred to as a gNB, a Node B, an eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmit reception point (TRP), or some other suitable terminology. Base station 102 provides an access point for UE 104 to EPC 160 or core network 190. Examples of UE 104 include a cellular phone, a smartphone, a Session Initiation Protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a tablet device, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, or any other similarly functional device. Some UEs 104 may be referred to as IoT devices (e.g., a parking meter, a gas pump, an oven, a vehicle, a heart monitor, etc.). UE 104 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.

[0053] Figure 2A is a diagram 200 illustrating an example of a first subframe within a 5G NR frame structure. Figure 2B is a diagram 230 illustrating an example of DL channels within a 5G NR subframe. Figure 2C is a diagram 250 illustrating an example of a second subframe within a 5G NR frame structure. Figure 2D FIG28 is a diagram illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplex (FDD), where for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to either DL or UL; or time division duplex (TDD), where for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to both DL and UL. Figure 2A 、 2CIn the example provided, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (mostly DL) and subframe 3 is configured with slot format 1 (all UL), where D is DL, U is UL, and F is for flexible use between DL / UL. Although subframes 3 and 4 are shown as having slot formats 1 and 28, respectively, any particular subframe can be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are all DL and all UL, respectively. Other slot formats 2-61 include a mix of DL, UL, and flexible codewords. The UE is configured with the slot format (dynamically configured through DL control information (DCI) or semi-statically / statically configured through radio resource control (RRC) signaling) via the received slot format indicator (SFI). Note that the following description also applies to the 5G NR frame structure for TDD.

[0054] Figures 2A-2D The frame structure is explained, and various aspects of the present disclosure may be applicable to other wireless communication technologies that may have different frame structures and / or different channels. A frame (10ms) can be divided into 10 equally sized subframes (1ms). Each subframe may include one or more time slots. A subframe may also include mini-time slots, which may include 7, 4, or 2 code elements. Each time slot may include 7 or 14 code elements, depending on whether the cyclic prefix (CP) is a normal CP or an extended CP. For a normal CP, each time slot may include 14 code elements, while for an extended CP, each time slot may include 7 code elements. The code elements on the DL may be CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) code elements. The code elements on the UL may be CP-OFDM code elements (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) code elements (also known as single carrier frequency division multiple access (SC-FDMA) code elements) (for power-limited scenarios; limited to single-stream transmission). The number of time slots within a subframe is based on the CP and parameter design. The parameter design defines the subcarrier spacing (SCS), and in effect, the symbol length / duration, which is equal to 1 / SCS.

[0055]

[0056] For normal CP (14 symbols / slot), different parameter designs μ0 to 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For extended CP, parameter design 2 allows 4 slots per subframe. Accordingly, for normal CP and parameter design μ, there are 14 symbols / slot and 2 μ time slots / subframe. The subcarrier spacing can be equal to 2 μ*15kHz, where μ is parameter design 0 to 4. Thus, parameter design μ=0 has a subcarrier spacing of 15kHz, while parameter design μ=4 has a subcarrier spacing of 240kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figures 2A to 2D An example of a parameter design μ=2 with a normal CP of 14 symbols per slot and 4 slots per subframe is provided. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a frame set, there may be one or more different bandwidth parts (BWPs) that are frequency-division multiplexed (see Figure 2B ). Each BWP can have a specific parameter design and CP (normal or extended).

[0057] A resource grid can be used to represent the frame structure. Each slot includes a resource block (RB) (also called a physical RB (PRB)) that extends over 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0058] like Figure 2A As illustrated in

[15] , some REs carry reference (pilot) signals (RS) for the UE. The RSs may include a demodulation RS (DM-RS) (indicated as R for one specific configuration, but other DM-RS configurations are possible) and a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RSs may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and a phase tracking RS (PT-RS).

[0059] Figure 2BExamples of various DL channels within a subframe of a frame are illustrated. The physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE comprising 6 RE groups (REGs), each REG comprising 12 consecutive REs within an OFDM symbol of the RB. The PDCCH within a BWP may be referred to as a control resource set (CORESET). During PDCCH monitoring opportunities on the CORESET, the UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., a common search space, a UE-specific search space), where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at higher and / or lower frequencies across the channel bandwidth. The primary synchronization signal (PSS) may be within symbol 2 of a particular subframe of a frame. The PSS is used by UE 104 to determine subframe / symbol timing and physical layer identity. The secondary synchronization signal (SSS) may be within symbol 4 of a particular subframe of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the location of the DM-RS. The physical broadcast channel (PBCH) carrying the master information block (MIB) can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as an SS block (SSB)). The MIB provides the number of RBs in the system bandwidth and the system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted over the PBCH (such as the system information block (SIB)), and paging messages.

[0060] As in Figure 2C As illustrated in FIG, some REs carry DM-RSs for channel estimation at the base station (indicated as R for one specific configuration, but other DM-RS configurations are possible). The UE may transmit DM-RSs for the physical uplink control channel (PUCCH) and DM-RSs for the physical uplink shared channel (PUSCH). The PUSCH DM-RS may be transmitted in the first or first two symbols of the PUSCH. The PUCCH DM-RS may be transmitted in different configurations depending on whether a short PUCCH or a long PUCCH is transmitted and on the specific PUCCH format used. The UE may transmit a sounding reference signal (SRS). The SRS may be transmitted in the last symbol of the subframe. The SRS may have a comb-tooth structure, and the UE may transmit the SRS on one of the comb teeth. The SRS may be used by the base station for channel quality estimation to enable frequency-dependent scheduling on the UL.

[0061] Figure 2DExamples of various UL channels within a subframe of an illustration frame. The PUCCH may be located at a position as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as a scheduling request, a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), and hybrid automatic repeat request (HARQ) acknowledgement (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACKs and / or negative ACKs (NACKs)). The PUSCH carries data and may additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0062] Figure 3 3 is a block diagram of wireless device 310 and wireless device 350 in communication in an access network. In some examples, wireless device 310 may be a base station in communication with a UE (e.g., device 350). In other examples, wireless device 310 or 350 may be an IAB node. For example, device 310 may be an IAB node and device 350 may be a child node or a UE. In other examples, wireless device 310 may be a base station and wireless device 350 may be an IAB node. In the DL, IP packets from EPC 160 may be provided to controller / processor 375. Controller / processor 375 implements Layer 3 and Layer 2 functionality. Layer 3 includes the Radio Resource Control (RRC) layer, and Layer 2 includes the Service Data Adaptation Protocol (SDAP) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Medium Access Control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression / decompression, security (ciphering, deciphering, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with delivery of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0063] The transmit (TX) processor 316 and the receive (RX) processor 370 implement Layer 1 functionality associated with various signal processing functions. Layer 1, including the physical (PHY) layer, may include error detection on the transport channel, forward error correction (FEC) coding / decoding of the transport channel, interleaving, rate matching, mapping onto the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. The TX processor 316 handles the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The coded and modulated symbols may then be split into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domain, and then combined together using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time-domain OFDM symbol stream. The OFDM stream is spatially precoded to generate multiple spatial streams. Channel estimates from a channel estimator 374 may be used to determine the coding and modulation schemes and for spatial processing. The channel estimates may be derived from a reference signal and / or channel condition feedback transmitted by the device 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX may modulate a radio frequency (RF) carrier with a corresponding spatial stream for transmission.

[0064] At device 350, each receiver 354RX receives a signal via its corresponding antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides the information to a receive (RX) processor 356. TX processor 368 and RX processor 356 implement Layer 1 functionality associated with various signal processing functions. RX processor 356 may perform spatial processing on the information to recover any spatial streams destined for device 350. If multiple spatial streams are destined for device 350, they may be combined into a single OFDM symbol stream by RX processor 356. RX processor 356 then converts the OFDM symbol stream from the time domain to the frequency domain using a fast Fourier transform (FFT). This frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, as well as the reference signal, are recovered and demodulated by determining the signal constellation point most likely transmitted by device 310. These soft decisions may be based on channel estimates calculated by channel estimator 358. These soft decisions are then decoded and deinterleaved to recover the data and control signals originally transmitted on the physical channel by device 310. These data and control signals are then provided to controller / processor 359, which implements layer 3 and layer 2 functionality.

[0065] The controller / processor 359 may be associated with a memory 360 that stores program codes and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport and logical channels, packet reassembly, cipher decoding, header decompression, and control signal processing to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0066] Similar to the functionality described in conjunction with DL transmissions performed by device 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (ciphering, deciphering, integrity protection, integrity verification); RLC layer functionality associated with delivery of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing MAC SDUs onto TBs, demultiplexing MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0067] Channel estimates derived by a channel estimator 358 from a reference signal or feedback transmitted by the device 310 may be used by a TX processor 368 to select an appropriate coding and modulation scheme, and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via separate transmitters 354TX. Each transmitter 354TX may modulate an RF carrier with a corresponding spatial stream for transmission.

[0068] UL transmissions are processed at device 310 in a manner similar to that described in conjunction with the receiver functionality at device 350. Each receiver 318RX receives a signal through its respective antenna 320. Each receiver 318RX recovers information modulated onto an RF carrier and provides the information to an RX processor 370.

[0069] The controller / processor 375 may be associated with a memory 376 that stores program codes and data. The memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport and logical channels, packet reassembly, cipher decoding, header decompression, and control signal processing to recover IP packets from the device 350. The IP packets from the controller / processor 375 may be provided to the EPC 160. The controller / processor 375 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0070] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to perform operations related to Figure 1 The 198 combines all aspects.

[0071] At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to perform operations related to Figure 1 The 199 combines all aspects.

[0072] Figure 4 4 is a diagram illustrating an IAB network 400. The IAB network 400 may include an anchor node (which may be referred to herein as an "IAB donor") 410 and an access node (which may be referred to herein as an "IAB node") 420. The IAB donor 410 may be a base station, such as a gNB or an eNB, and may perform functions for controlling the IAB network 400. The IAB node 420 may include an L2 relay node, etc. The IAB donor 410 and the IAB node 420 share resources together to provide an access network and a backhaul network to the core network 490. For example, resources may be shared between access links and backhaul links in the IAB network.

[0073] UE 430 interfaces with IAB node 420 or IAB donor 410 via access link 470. IAB nodes 420 communicate with each other and with IAB donor 410 via backhaul link 460. IAB donor 410 is connected to core network 490 via wired backhaul link 450. UE 430 communicates with the core network by relaying messages to IAB network 400 via their respective access link 470, which can then relay the messages to IAB donor 410 via backhaul link 460 for communication with the core network via wired backhaul link 450. Similarly, the core network can communicate with UE 430 by sending messages to IAB donor 410 via wired backhaul link 450. The IAB donor 410 transmits the message to the IAB node 420 connected to the UE 430 via the backhaul link 460 through the IAB network 400 , and the IAB node 420 transmits the message to the UE 430 via the access link 470 .

[0074] Each IAB node (e.g., including the IAB donor 410 and each IAB node 420) can use a PCI value. The PCI value can be used as an identifier for the IAB donor 410 or IAB node 420. The PCI value can be used to determine the scrambling sequence applied to the physical signal and / or channel transmitted by the specific IAB node. For example, the PSS and / or SSS transmitted by the corresponding IAB donor 410 or IAB node 420 can be scrambled using a scrambling sequence based on the PCI used by the corresponding IAB node. The network may have a limited number of available PCI values. For example, a 5G NR system may support 1008 PCI values. Accordingly, a given PCI value can be reused in the same network.

[0075] Figure 5 FIG2 is a diagram illustrating an IAB network 500 and its components. The IAB network 500 includes an IAB donor 510 and IAB nodes 520a, 520b. The IAB nodes and the IAB donor can provide wireless access links to UEs 530a-c.

[0076] The IAB donor 510 can be considered the root node of the tree structure of the IAB network 500. The IAB donor node 510 can be connected to the core network 590 via a wired connection 591. The wired connection can include, for example, a wired optical fiber. The IAB donor node 510 can provide connections to one or more IAB nodes 520a. Each of the IAB nodes 520a can be referred to as a child node of the IAB donor node 510. The IAB donor node 510 can also provide connections to one or more UEs 530a, which can be referred to as child UEs of the IAB donor 510. The IAB donor 510 can be connected to its child IAB node 520a via a backhaul link 560 and can be connected to the child UE 530a via an access link 570. The IAB node 520a, as a child node of the IAB node 510, can also have (multiple) IAB node 520b and / or (multiple) UE 530b as child nodes. For example, the IAB node 520b may be further connected to child nodes and / or child UEs. Figure 5 IAB node 520b is illustrated providing access links to UE 530c, respectively.

[0077] The IAB donor 510 may include a central unit (CU) and a distributed unit (DU). The central unit CU may provide control over the IAB nodes 520a and 520b in the IAB network 500. For example, the CU may be responsible for configuring the IAB network 500. The CU may perform RRC / PDCP layer functions. The DU may perform scheduling. For example, the DU may schedule resources for communication by the child IAB node 520a and / or the UE 530a of the IAB donor 510.

[0078] The IAB nodes 520a, 520b may include a mobile terminal (MT) and a DU. The MT of the IAB node 520a may operate as a scheduled node and be scheduled by the DU of the parent node (e.g., IAB donor 510) similarly to the UE 530a. The MT of the IAB node 520b may operate as a scheduled node of the parent node 520a. The DU may schedule the child IAB node 520b and the UE 530b of the IAB node 520a. The IAB node may provide a connection to an IAB node that in turn provides a connection to another IAB node. The pattern including the parent IAB node scheduling the DU of the child IAB node / child UE may continue to Figure 5 More links in the explanation.

[0079] In wireless communication systems supporting full-duplex (FD) communication, self-interference can be an issue that can affect FD communication. Self-interference can occur when a signal transmitted from a transmitting device leaks to (e.g., is received by) the transmitting device's own receiving port. The transmitting device can cause interference to its own reception when transmission and reception at least partially overlap in time. In addition, the transmitted signal can be reflected by an object back to the receiving port, which can be referred to as a clutter echo. As used herein, "clutter echo" refers to a signal transmitted by a device that is reflected by an object (herein referred to as "clutter") and received by the device's own receiver. Reducing self-interference, especially clutter echo, through spatial separation by appropriately selecting transmit and receive beams or more advanced transmit / receive beamforming can help support FD communication. FD communication allows for simultaneous UL and DL transmissions in FR2, as well as different associated aspects of the protocols. Flexible TDD capabilities can be present at the base station (e.g., gNB) or the UE, or both. For example, a UE in FD communication can transmit UL from one antenna panel and receive DL from another antenna panel. FD communication can be conditional on UL / DL beam separation. FD communication can result in reduced latency, making it possible to receive DL signals in UL-only time slots. At least another benefit is that FD communication can provide spectral efficiency enhancements (e.g., per cell or per UE), which can allow for more efficient resource utilization.

[0080] Self-interference measurements may be performed to determine whether FD capabilities can be supported or enabled / enhanced at the wireless device. To perform the self-interference measurements, the wireless device may transmit signals from a first set of antennas in one or more transmit beam directions and may measure received signals (e.g., reflected or leaked transmitted signals) on a second set of antennas in one or more receive beam directions.

[0081] In some instances, a wireless device may receive a configuration from a network entity to perform self-interference measurements. The network entity may provide configuration / resources for the wireless device to perform self-interference measurements. The network entity may configure the wireless device to provide a report of the self-interference measurements. The network entity may determine the FD capability, status, and / or performance of the wireless device based on the received self-interference report. However, the network entity may not account for clutter echoes when configuring the wireless device to perform self-interference measurements.

[0082] In some instances, a wireless device may be configured to perform self-interference measurements without specific instructions from a network entity. For example, a network entity (e.g., a distributed unit (DU)) may send a downlink signal (e.g., SSB / CSI-RS), and the wireless device may measure what is received on its receive port / antenna in terms of reference signal received power (RSRP). In another example, if a UE or mobile terminal (MT) is scheduled to send an uplink signal (e.g., SRS), the UE or MT may perform self-interference measurements on its receive port / antenna. In some instances, the wireless device may not provide any report of the self-interference measurement to another entity (e.g., the network). The wireless device may use the self-interference measurement to determine whether it can support FD or perform beam tuning. However, the wireless device may not take into account the interference echo when performing the self-interference measurement.

[0083] Figures 6A-6C are diagrams illustrating examples 600 , 610 , 620 of full-duplex (FD) communications. Figure 6A Example 600 includes UE1 602 and two base stations (e.g., TRPs) 604-1, 604-2, where UE1 602 is sending uplink transmissions to base station 604-1 and receiving downlink transmissions from base station 604-2, e.g., in a time-overlapping, simultaneous manner. In some aspects, 604-1 and 604-2 or 604 may represent IAB nodes. Figure 6A In example 600, FD is enabled for UE1 602, but not for base stations 604-1, 604-2. Figure 6B The example 610 includes two UEs—UE1 602-1 and UE2 602-2—and a base station 604, where UE1 602-1 is receiving downlink transmissions from the base station 604 and UE2 602-2 is transmitting uplink transmissions to the base station 604. Figure 6B In example 610, FD is enabled for base station 604, but not for UEs (UE1 602-1 and UE2 602-2). Figure 6CExample 620 includes UE1 602 and base station 604, where UE1 602 is receiving downlink transmissions from base station 604 and UE1 602 is transmitting uplink transmissions to base station 604. Figure 6C In example 620 , FD is enabled for both UE1 602 and base station 604 .

[0084] The present disclosure relates to an improved manner in which self-interference measurements can be specifically configured for clutter echo detection utilizing power ramping. The self-interference measurement configuration can be adjusted in response to detected clutter echoes. For example, a wireless device can be configured to perform multiple iterations of SIM while increasing power with each SIM iteration to detect clutter echoes until full transmit power is reached, and such results can be reported to a network entity so that the network entity can adjust the self-interference measurement. Configuring the self-interference measurement to account for detected clutter echoes can facilitate the performance of self-interference measurements and beam pair selection. Thus, it is desirable to improve the manner in which self-interference measurements are configured to allow for detection of clutter echoes.

[0085] Beam separation of transmit and receive beams helps limit or reduce self-interference that may occur during FD communications. It is desirable to consider clutter echoes when configuring self-interference measurements to minimize self-interference and determine the selection of DL and UL beam pairs. Determining the presence of clutter echoes allows for adjustment of the self-interference measurement configuration, which can provide reliable FD communications by selecting beam pairs that minimize or reduce self-interference.

[0086] Figure 7 700 is a call flow diagram between a first wireless device 702 and a second wireless device 704. In some aspects, the first wireless device 702 may be a UE and the second wireless device 704 may be a base station, where the base station provides a cell serving the UE. Figure 1 In the context of , the second wireless device 704 may correspond to a base station 102 / 180, and accordingly, a cell may include a geographic coverage area 110 in which communication coverage is provided and / or a small cell 102' having a coverage area 110'. Additionally, the first wireless device 702 may correspond to at least a UE 104. In another example, Figure 3 In the context of , the second wireless device 704 may correspond to the device 310 and the first wireless device 702 may correspond to the device 350 .

[0087] As illustrated at 706, the second wireless device 704 may configure a SIM configuration for the plurality of beam pairs. The second wireless device 704 may configure the SIM configuration for the plurality of beam pairs based on the first transmit power. In some aspects, the first wireless device 702 may be a UE, an IAB node, or a child node. In some aspects, the second wireless device 704 may be a base station or an IAB node.

[0088] The first wireless device 702 may execute a SIM with a first transmit power based on a first SIM configuration. In some examples, the SIM may be an initial SIM that is executed using a lower (e.g., initial) transmit power. The SIM may be executed autonomously at 710, e.g., the first wireless device 702 may determine to execute the SIM without receiving an instruction to execute the SIM from a second wireless device. In some aspects, the first wireless device 702 may be configured to execute the SIM based on a SIM configuration received from the second wireless device 704. For example, a UE or an IAB node may execute the SIM based on a configuration configured and provided by the network.

[0089] As illustrated at 708, the second wireless device 704 may transmit a SIM configuration to the first wireless device 702. The first wireless device 702 receives the SIM configuration from the second wireless device 704. The configuration may indicate various parameters for the SIM, including, among other things, a time window for performing the SIM or time and / or frequency resources (or more specifically, TX and RX beam sweeping resources) for reporting SIM measurements to the second wireless device.

[0090] As illustrated at 710, the first wireless device 702 may perform SIM for multiple beam pairs. The first wireless device 702 may perform SIM for multiple beam pairs based on a first transmit power. In some aspects, the initial SIM may utilize a low transmit power. The transmit power may be configured in a first SIM configuration from the second wireless device 704. In some aspects, the transmit power for the initial SIM may be determined by the first wireless device without configuration from the second wireless device. In some aspects, the transmit power for the initial SIM may be predefined by the first wireless device 702 or the second wireless device 704. In some aspects, the first wireless device 702 may be a UE, an IAB node, or a child node. In some aspects, the second wireless device 704 may be a base station, an IAB node, or a parent node.

[0091] As illustrated at 712, the first wireless device may determine that one or more beam pairs for which SIM was performed meet a criterion. In some aspects, the criterion may correspond to a measured cross-beam self-interference (RSRP) less than a threshold. In some aspects, the criterion may correspond to detected clutter echo self-interference, e.g., cross-beam self-interference (RSRP) less than the noise floor. In some aspects, the criterion may correspond to a measured round-trip time (RTT) greater than a threshold. In instances where no beam pairs meet the criterion, the first wireless device 702 may report a measurement at 716 that no clutter echo was detected. In instances where one or more beam pairs meet the criterion, the first wireless device 702 may perform another iteration of SIM using power ramping. This iteration may be performed for a subset or a reduced set of beam pairs (e.g., limited to one or more beam pairs that meet the criterion). In some aspects, the first wireless device 702 may perform a second SIM using a second transmit power greater than the first transmit power. In some aspects, the first wireless device 702 may perform a third SIM using a third transmit power greater than the second transmit power. The first wireless device 702 can continue to append SIMs until a maximum number of iterations is reached or full transmit power is reached.

[0092] As illustrated at 714, the first wireless device may perform iterations of SIM for one or more beam pairs. The first wireless device may perform iterations of SIM for one or more beam pairs that meet a criterion. The iterations of SIM may be based on a second transmit power. The second transmit power may be greater than the first transmit power.

[0093] As illustrated at 716, the first wireless device 702 may report cross-beam measurements. The first wireless device 702 may report cross-beam measurements for a top beam pair candidate. The top beam pair candidate may be based on the cross-beam measurements. The first wireless device 702 may report cross-beam measurements for the top beam pair candidate with the highest cross-beam measurement. The first wireless device may report cross-beam measurements for the top beam pair candidate and one or more beam pairs that meet a criterion based on SIM performed with a first transmit power. In some aspects, the cross-beam measurements may include one or more of cross-beam RSRP or cross-beam signal to interference plus noise ratio (SINR). The second wireless device 704 may receive the cross-beam measurements from the first wireless device 702.

[0094] As described, in some aspects, if one or more beam pairs meet the criterion, the transmit power for the beam pairs that meet the criterion may be increased in the next round of SIM.

[0095] In some aspects, the first wireless device 702 may receive a second SIM configuration from the second wireless device. The second SIM configuration may be based on at least a cross-beam measurement report. SIM may be performed by the first wireless device using a second transmit power based on the second SIM configuration. In some aspects, SIM may be performed for beam pairs that meet criteria and have increased transmit power.

[0096] In some aspects, to determine whether the criteria have been met, such a decision may be based on the measured cross-beam (e.g., transmit beam to receive beam) self-interference RSRP being less than a threshold. In such instances, the transmit power may be increased in the next round of SIM or the next iteration of SIM. The reported RSRP value may be less than a small threshold (e.g., the noise floor). In some aspects, to determine whether the criteria have been met, such a decision may be based on the detected clutter echo self-interference, which may be based on a threshold of the measured RTT. In such instances, the transmit power may be increased or the full transmit power may be used in the next round of SIM or the next iteration of SIM.

[0097] In some aspects, the first wireless device 702 may repeat one or more additional iterations of SIM based on the increased transmit power at each iteration. After performing a second round of SIM for a reduced set of beam pairs that have met the criteria, the first wireless device may determine whether the second round of SIM provides measurements that meet the criteria for one or more beam pairs. If so, the first wireless device 702 may perform another iteration of SIM with a power ramp, where the power is increased with each iteration relative to the previous transmit power. The first wireless device 702 may increase the transmit power for SIM and may perform another set of SIM measurements for beams that have met the criteria after the second round of SIM. The first wireless device 702 may continue to repeat one or more additional iterations of SIM until a threshold number of iterations is reached or until the full transmit power of the first wireless device is reached. For example, Figure 7 Line 718 in may illustrate multiple iterations of SIM that may be performed for one or more beam pairs that satisfied the criteria based on the latest SIM iteration at 712. Thus, corresponding iterations may be performed by the first wireless device for a subset of beam pairs that satisfied the criteria based on measurements performed in previous iterations.

[0098] In some aspects, the first wireless device may repeat one or more additional iterations until a threshold number of iterations is reached or the full transmit power of the first wireless device is reached. In some aspects, the threshold number of iterations may be determined by the first wireless device. The first wireless device 702 may repeat one or more additional iterations of SIM until full transmit power is reached or interference is detected or measured for one or more beam pairs. In some aspects, the number of rounds or iterations of SIM may be determined by the first wireless device or the second wireless device.

[0099] In some aspects, the first wireless device 702 may receive an indication of a threshold number of iterations. The first wireless device 702 may receive the threshold number of iterations in a configuration from the second wireless device 704. For example, the threshold number of iterations may be included in a SIM configuration received from the second wireless device 704.

[0100] Figure 8 800 is a flow chart of a wireless communication method. The method may be performed by an IAB node or UE or a component of an IAB node or UE (e.g., IAB node 103, 410, 420, 510, 520a, 520b; device 350, 702, 704, 802, 804; UE 104, 430, 602; equipment 1002; cellular baseband processor 1004, which may include memory 360 and may be the entire device 350 or a component of the device 350, such as TX processor 368, RX processor 356, and / or controller / processor 359). One or more of the illustrated operations may be optional, omitted, swapped, or performed simultaneously. The method may enable a first wireless device to perform iterations of SIM to detect clutter echoes.

[0101] At 802, a first wireless device may perform SIM. For example, 802 may be performed by SIM component 1042 of apparatus 1002. The first wireless device may perform SIM for multiple beam pairs. The first wireless device may perform SIM for multiple beam pairs based on a first transmit power. In some aspects, the first wireless device may include a UE, an IAB node, or a child node.

[0102] At 804, the first wireless device may determine one or more beam pairs that meet a criterion. For example, 804 may be performed by the determining component 1044 of the apparatus 1002. In some aspects, the criterion may correspond to a measured cross-beam self-interference RSRP being less than a threshold. In some aspects, the criterion may correspond to a detected clutter echo self-interference. In some aspects, the criterion may correspond to a measured RTT being greater than a threshold.

[0103] At 806, the first wireless device may perform iterations of the SIM for one or more beam pairs that meet the criteria. For example, 806 may be performed by the iteration component 1046 of the apparatus 1002. The iterations of the SIM may be based on the second transmit power. The second transmit power may be greater than the first transmit power. The first transmit power may precede the second transmit power. For example, the transmit power may be increased with each iteration relative to the previous transmit power setting. In some aspects, if additional iterations of the SIM are performed, an increased transmit power may be used that is increased from the second or previous transmit power. In this manner, the transmit power may be increased relative to the previous transmit power setting when performing one or more iterations of the SIM.

[0104] Figure 9 900 is a flow chart of a method of wireless communication. The method may be performed by an IAB node or UE or a component of an IAB node or UE (e.g., IAB node 103, 410, 420, 510, 520a, 520b; device 350, 702, 704, 802, 804; UE 104, 430, 602; equipment 1002; cellular baseband processor 1004, which may include memory 360 and may be the entire device 350 or a component of the device 350, such as TX processor 368, RX processor 356, and / or controller / processor 359). One or more of the illustrated operations may be optional, omitted, swapped, or performed simultaneously. The method may enable a first wireless device to perform iterations of SIM to detect clutter echoes.

[0105] At 902, a first wireless device may receive a first SIM configuration. For example, 902 may be performed by the first SIM component 1040 of the device 1002. The first wireless device may receive the first SIM configuration from a second wireless device. The first wireless device may perform SIM based on the first SIM configuration with a first transmit power.

[0106] At 904, the first wireless device may perform SIM for multiple beam pairs. For example, 904 may be performed by the SIM component 1042 of the equipment 1002. The first wireless device may perform SIM for multiple beam pairs based on the first transmit power. In some aspects, the first wireless device may include a UE, an IAB node, or a child node.

[0107] At 906, the first wireless device may determine one or more beam pairs that meet a criterion. For example, 906 may be performed by the determining component 1044 of the apparatus 1002. In some aspects, the criterion may correspond to a measured cross-beam self-interference RSRP being less than a threshold. In some aspects, the criterion may correspond to a detected clutter echo self-interference. In some aspects, the criterion may correspond to a measured RTT being greater than a threshold.

[0108] At 908, the first wireless device may perform an iteration of the SIM. For example, 908 may be performed by the iteration component 1046 of the apparatus 1002. The first wireless device may perform an iteration of the SIM for one or more beam pairs that meet the criteria. The iteration of the SIM may be based on the second transmit power. The second transmit power may be greater than the first transmit power. The first transmit power may precede the second transmit power. For example, the transmit power may be increased with each iteration relative to the previous transmit power setting. In some aspects, if additional iterations of the SIM are performed, an increased transmit power may be used that is increased from the second or previous transmit power. In this manner, the transmit power may be increased relative to the previous transmit power setting when performing one or more iterations of the SIM.

[0109] At 910, a first wireless device may report cross-beam measurements. For example, 910 may be performed by reporting component 1048 of apparatus 1002. The first wireless device may report cross-beam measurements for a top beam pair candidate having a highest cross-beam measurement. The first wireless device may report cross-beam measurements for the top beam pair candidate and one or more beam pairs that meet criteria based on SIM performed with a first transmit power. In some aspects, the cross-beam measurements may include one or more of cross-beam RSRP or cross-beam SINR.

[0110] At 912, the first wireless device may receive a second SIM configuration. For example, 912 may be performed by the second SIM component 1050 of the apparatus 1002. The first wireless device may receive the second SIM configuration from the second wireless device. The second SIM configuration may be based on at least a cross-beam measurement report. SIM may be performed by the first wireless device using a second transmit power based on the second SIM configuration.

[0111] At 914, the first wireless device may repeat one or more additional iterations of SIM. For example, 914 may be performed by the repeating component 1052 of the apparatus 1002. The first wireless device may repeat one or more additional iterations of SIM based on increasing transmit power with each iteration. The respective iterations may be performed by the first wireless device for a subset of beam pairs that meet a criterion based on measurements performed in a previous iteration. In some aspects, the first wireless device may repeat the one or more additional iterations until a threshold number of iterations is reached or the full transmit power of the first wireless device is reached. In some aspects, the threshold number of iterations may be determined by the first wireless device.

[0112] At 916, the first wireless device may receive an indication of a threshold number of iterations. For example, 916 may be performed by threshold component 1054 of apparatus 1002. The first wireless device may receive an indication of a threshold number of iterations from a second wireless device. The first wireless device may perform one or more additional iterations of SIM based on the indication of the threshold number of iterations.

[0113] Figure 101 is a diagram illustrating an example of a hardware implementation of an apparatus 1002. The apparatus 1002 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 1002 may include a cellular baseband processor 1004 (also referred to as a modem) coupled to a cellular RF transceiver 1022. In some aspects, the apparatus 1002 may further include one or more subscriber identity modules (SIM) cards 1020, an application processor 1006 coupled to a secure digital (SD) card 1008 and a screen 1010, a Bluetooth module 1012, a wireless local area network (WLAN) module 1014, a global positioning system (GPS) module 1016, or a power supply 1018. The cellular baseband processor 1004 communicates with the UE 104 and / or the BS 102 / 180 via the cellular RF transceiver 1022. The cellular baseband processor 1004 may include a computer-readable medium / memory. The computer-readable medium / memory may be non-transitory. The cellular baseband processor 1004 is responsible for general processing, including the execution of software stored on a computer-readable medium / memory. This software, when executed by the cellular baseband processor 1004, enables the cellular baseband processor 1004 to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the cellular baseband processor 1004 when executing the software. The cellular baseband processor 1004 further includes a receive component 1030, a communication manager 1032, and a transmit component 1034. The communication manager 1032 includes one or more of the illustrated components. The components within the communication manager 1032 may be stored in a computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 1004. The cellular baseband processor 1004 may be a component of the device 350 and may include memory 360 and / or at least one of the following: a TX processor 368, an RX processor 356, and a controller / processor 359. In one configuration, the equipment 1002 may be a modem chip and include only the baseband processor 1004, and in another configuration, the equipment 1002 may be an entire UE (e.g., see Figure 3 350) and includes additional modules for equipment 1002.

[0114] The communication manager 1032 includes a first SIM component 1040 configured to receive a first SIM configuration from a second wireless device, for example, as described in conjunction with Figure 9 The communication manager 1032 further includes a SIM component 1042 configured to perform SIM for multiple beam pairs, for example, as described in conjunction with Figure 8 802 or Figure 9The communication manager 1032 further includes a determination component 1044 configured to determine one or more beam pairs that meet a criterion, such as, for example, Figure 8 804 or Figure 9 The communication manager 1032 further includes an iteration component 1046 configured to perform iterations of the SIM for one or more beam pairs that meet the criteria, for example, as described in conjunction with Figure 8 806 or Figure 9 The communication manager 1032 further includes a reporting component 1048 configured to report cross-beam measurements for top beam pair candidates, for example, as described in conjunction with Figure 9 The communication manager 1032 further includes a second SIM component 1050 configured to receive a second SIM configuration from a second wireless device, for example, as described in conjunction with Figure 9 The communication manager 1032 further includes a repeating component 1052 configured to repeat one or more additional iterations of the SIM, for example, as described in conjunction with Figure 9 914. The communication manager 1032 further includes a threshold component 1054, which is configured to receive a threshold number of iterations, for example, as described in conjunction with Figure 9 The 916 described.

[0115] The equipment may include performing Figure 8 or 9 additional components for each box of the algorithm in the flowchart. Thus, Figure 8 Each block in the flowchart of FIG or 9 may be performed by a component and the device may include one or more of those components. These components may be one or more hardware components specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0116] As shown, the equipment 1002 may include various components configured for various functions. In one configuration, the equipment 1002 (and specifically the cellular baseband processor 1004) includes means for performing self-interference measurements (SIM) for multiple beam pairs based on a first transmit power. The equipment includes means for determining one or more beam pairs that meet a criterion. The equipment includes means for performing iterations of SIM for the one or more beam pairs that meet the criterion. The iterations of SIM are based on a second transmit power increased from the first transmit power. The equipment further includes means for receiving a first SIM configuration from a second wireless device, wherein the SIM is performed based on the first SIM configuration using the first transmit power. The equipment further includes means for reporting cross-beam measurements for top beam pair candidates and one or more beam pairs that meet the criterion based on the SIM performed using the first transmit power. The equipment further includes means for receiving a second SIM configuration from the second wireless device based on at least the cross-beam measurement report, wherein the SIM is performed based on the second SIM configuration using the second transmit power. The equipment further includes means for repeating one or more additional iterations of SIM based on the increased transmit power. The respective iterations are performed for a subset of beam pairs that meet a criterion based on measurements performed in a previous iteration. The apparatus further includes means for receiving a threshold number of iterations from a second wireless device. The means may be one or more of the components of the apparatus 1002 configured to perform the functions recited by the means. As described above, the apparatus 1002 may include a TX processor 368, an RX processor 356, and a controller / processor 359. Thus, in one configuration, the means may be the TX processor 368, the RX processor 356, and the controller / processor 359 configured to perform the functions recited by the means.

[0117] Figure 11 1100 is a flow chart of a method of wireless communication. The method may be performed by an IAB node or base station or a component of an IAB node or base station (e.g., IAB node 103, 410, 420, 510, 520a, 520b; base station 102, 180, 604, 604-1, 604-2; device 310, 704, 804; equipment 1302; baseband unit 1304, which may include memory 376 and may be the entire device 310 or a component of device 310 such as TX processor 316, RX processor 370, and / or controller / processor 375). One or more of the illustrated operations may be optional, omitted, swapped, or performed simultaneously. The method may enable a first wireless device to configure a second wireless device to perform iterations of SIM to detect clutter echoes.

[0118] At 1102, a first wireless device may configure a SIM configuration. For example, 1102 may be performed by configuration component 1340 of apparatus 1302. The first wireless device may configure a SIM configuration for a plurality of beams. The first wireless device may configure a SIM configuration for a plurality of beam pairs based on a first transmit power. In some aspects, the first wireless device may be a base station, an IAB node, or a parent node.

[0119] At 1104, the first wireless device may transmit the SIM configuration. For example, 1104 may be performed by the SIM component 1342 of the equipment 1302. The first wireless device may transmit the SIM configuration to the second wireless device. The SIM configuration may configure the second wireless device to perform SIM. In some aspects, the second wireless device may include a UE, an IAB node, or a child node.

[0120] At 1106, the first wireless device may receive cross-beam measurements for a top beam pair candidate. For example, 1106 may be performed by the cross-beam component 1346 of the equipment 1302. The first wireless device may receive cross-beam measurements for the top beam pair candidate and one or more beam pairs that meet a criterion based on SIM performed at a first transmit power from a second wireless device. In some aspects, the criterion may correspond to a measured cross-beam self-interference (RSRP) less than a threshold. In some aspects, the criterion may correspond to detected clutter echo self-interference. In some aspects, the criterion may correspond to a measured round-trip time (RTT) greater than a threshold. In some aspects, the cross-beam measurements may include one or more of cross-beam RSRP or cross-beam SINR. In some aspects, the second wireless device may repeat one or more additional iterations of SIM based on an increased transmit power. The respective iterations may be performed for a subset of beam pairs that meet the criterion based on measurements performed in a previous iteration. The second wireless device may repeat the one or more additional iterations until a threshold number of iterations is reached or the full transmit power of the second wireless device is reached.

[0121] Figure 12 1200 is a flow chart of a method of wireless communication. The method may be performed by an IAB node or base station or a component of an IAB node or base station (e.g., IAB nodes 103, 410, 420, 510, 520a, 520b; base stations 102, 180, 604, 604-1, 604-2; devices 310, 704, 804; equipment 1302; baseband unit 1304, which may include memory 376 and may be the entire device 310 or a component of device 310 such as TX processor 316, RX processor 370, and / or controller / processor 375). One or more of the illustrated operations may be optional, omitted, swapped, or performed simultaneously. The method may enable a first wireless device to configure a second wireless device to perform iterations of SIM to detect clutter echoes.

[0122] At 1202, a first wireless device may configure a SIM configuration. For example, 1202 may be performed by configuration component 1340 of equipment 1302. The first wireless device may configure a SIM configuration for a plurality of beams. The first wireless device may configure a SIM configuration for a plurality of beam pairs based on a first transmit power. In some aspects, the first wireless device may be a base station, an IAB node, or a parent node.

[0123] At 1204, the first wireless device may transmit the SIM configuration. For example, 1204 may be performed by the SIM component 1342 of the equipment 1302. The first wireless device may transmit the SIM configuration to the second wireless device. The SIM configuration may configure the second wireless device to perform SIM. In some aspects, the second wireless device may include a UE, an IAB node, or a child node.

[0124] At 1206, the first wireless device may transmit a first SIM configuration. For example, 1206 may be performed by the first SIM component 1344 of the equipment 1302. The first wireless device may transmit the first SIM configuration to the second wireless device. The second wireless device may perform a SIM based on the first SIM configuration using a first transmit power.

[0125] At 1208, the first wireless device may receive cross-beam measurements for a top beam pair candidate. For example, 1208 may be performed by the cross-beam component 1346 of the equipment 1302. The first wireless device may receive cross-beam measurements for a top beam pair candidate from a second wireless device. The first wireless device may receive cross-beam measurements for the top beam pair candidate and one or more beam pairs that meet a criterion based on SIM performed with a first transmit power. In some aspects, the criterion corresponds to a measured cross-beam self-interference (RSRP) less than a threshold. In some aspects, the criterion corresponds to detected clutter echo self-interference. In some aspects, the criterion corresponds to a measured round-trip time (RTT) greater than a threshold. In some aspects, the cross-beam measurements may include one or more of cross-beam RSRP or cross-beam SINR. In some aspects, the second wireless device may repeat one or more additional iterations of SIM based on the increased transmit power. The respective iterations may be performed for a subset of beam pairs that meet the criterion based on measurements performed in the previous iteration. The second wireless device may repeat one or more additional iterations until a threshold number of iterations is reached or the full transmit power of the second wireless device is reached.

[0126] At 1210, the first wireless device may transmit a second SIM configuration. For example, 1210 may be performed by the second SIM component 1348 of the equipment 1302. The first wireless device may transmit the second SIM configuration to the second wireless device. The first wireless device may transmit the second SIM configuration to the second wireless device based on at least the cross-beam measurement report. SIM may be performed using a second transmit power based on the second SIM configuration.

[0127] At 1212, the first wireless device may receive a threshold number of iterations. For example, 1212 may be performed by threshold component 1350 of apparatus 1302. The first wireless device may receive the threshold number of iterations from the second wireless device. In some aspects, the threshold number of iterations may be determined by the first wireless device.

[0128] Figure 13 13 is a diagram illustrating an example of a hardware implementation of equipment 1302. Equipment 1302 may be a base station, a component of a base station, or may implement base station functionality. In some aspects, equipment 1302 may include a baseband unit 1304. Baseband unit 1304 may communicate with UE 104 via a cellular RF transceiver 1322. Baseband unit 1304 may include computer-readable media / memory. Baseband unit 1304 is responsible for general processing, including the execution of software stored on the computer-readable media / memory. When executed by baseband unit 1304, the software enables baseband unit 1304 to perform the various functions described above. The computer-readable media / memory may also be used to store data manipulated by baseband unit 1304 when executing the software. Baseband unit 1304 further includes a receiving component 1330, a communication manager 1332, and a transmitting component 1334. Communication manager 1332 includes one or more of the illustrated components. Components within the communications manager 1332 may be stored in computer-readable media / memory and / or configured as hardware within the baseband unit 1304. The baseband unit 1304 may be a component of the device 310 and may include the memory 376 and / or at least one of the TX processor 316, the RX processor 370, and the controller / processor 375.

[0129] The communication manager 1332 includes a configuration component 1340 that can configure SIM configurations for multiple beam pairs, such as in conjunction with Figure 11 1102 or Figure 12 The communication manager 1332 further includes a SIM component 1342 that can transmit the SIM configuration, for example, as described in conjunction with Figure 11 1104 or Figure 12The communication manager 1332 further includes a first SIM component 1344 that can transmit a first SIM configuration to a second wireless device, for example, as described in conjunction with Figure 12 The communication manager 1332 further includes a cross-beam component 1346 that can receive cross-beam measurements for top beam pair candidates, such as in conjunction with Figure 11 1106 or Figure 12 The communication manager 1332 further includes a second SIM component 1348 that can transmit a second SIM configuration to a second wireless device, for example, as described in conjunction with Figure 12 1210 as described. The communication manager 1332 further includes a threshold component 1350, which can receive a threshold number of iterations, for example, as described in conjunction with Figure 12 1212 described.

[0130] The equipment may include performing Figure 11 or 12 additional components for each box of the algorithm in the flowchart. Thus, Figure 11 Each block in the flowchart of 1 or 12 may be performed by a component and the apparatus may include one or more of those components. These components may be one or more hardware components specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0131] As shown, equipment 1302 may include various components configured for various functions. In one configuration, equipment 1302 (and specifically baseband unit 1304) includes means for configuring self-interference measurement (SIM) configurations for multiple beam pairs based on a first transmit power. Equipment 1302 includes means for transmitting the SIM configurations to a second wireless device. The equipment includes means for receiving, from the second wireless device, cross-beam measurements for top beam pair candidates and one or more beam pairs that meet criteria based on SIM performed at the first transmit power. The equipment further includes means for transmitting the first SIM configuration to the second wireless device. SIM is performed by the second wireless device based on the first SIM configuration at the first transmit power. The equipment further includes means for transmitting a second SIM configuration to the second wireless device based on at least a cross-beam measurement report. SIM is performed based on the second SIM configuration at a second transmit power. The equipment further includes means for receiving a threshold number of iterations from the second wireless device. The means may be one or more of the components of equipment 1302 configured to perform the functions recited by the means. As described above, the apparatus 1302 may include the TX processor 316, the RX processor 370, and the controller / processor 375. Thus, in one configuration, the means may be the TX processor 316, the RX processor 370, and the controller / processor 375 configured to perform the functions recited by the means.

[0132] It should be understood that the specific order or hierarchy of the blocks in the disclosed process / flowcharts is an illustration of an example approach. It should be understood that the specific order or hierarchy of the blocks in these process / flowcharts can be rearranged based on design preferences. In addition, some blocks can be combined or omitted. The accompanying method claims present the elements of the various blocks in an example order and are not meant to be limited to the specific order or hierarchy presented.

[0133] The preceding description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the universal principles defined herein can be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein, but should be granted the full scope consistent with the claims in the language, wherein the citation of the singular form of an element is not intended to represent "there is and only one", but "one or more", unless otherwise stated. Terms such as "if", "when..." and "at..." should be interpreted as meaning "under the condition", rather than implying a direct temporal relationship or reaction. That is, these phrases (e.g., "when...") do not imply an immediate action in response to the occurrence of an action or during the occurrence of an action, but only imply that an action will occur when the condition is met, without requiring a specific or immediate time constraint for the action to occur. The wording "exemplary" is used herein to represent "serving as an example, instance, or illustration". Any aspect described herein as "exemplary" is not necessarily to be interpreted as being superior to or superior to other aspects. Unless otherwise stated, the term "some / certain" refers to one or more. Combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of A, B, and C," "one or more of A, B, and C," and "A, B, C, or any combination thereof" include any combination of A, B, and / or C, and may include multiple As, multiple Bs, or multiple Cs. Specifically, combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of A, B, and C," "one or more of A, B, and C," and "A, B, C, or any combination thereof" may be A only, B only, C only, A and B, A and C, B and C, or A, B, and C, where any such combination may include one or more of A, B, or C. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are now or later known to those of ordinary skill in the art are expressly incorporated by reference and are intended to be encompassed by the claims. Furthermore, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly recited in the claims. The terms "module," "mechanism," "element," "device," etc., are not intended to be substitutes for the term "means." Thus, no claim element should be construed as a means-plus-function unless the element is explicitly recited using the phrase "means for..."

[0134] The following aspects are illustrative only and may be combined with other aspects or teachings described herein without limitation.

[0135] Aspect 1 is an apparatus for wireless communication at a first wireless device, the apparatus comprising a memory and at least one processor, the at least one processor being coupled to the memory and configured to perform self-interference measurements (SIMs) for a plurality of beam pairs based on a first transmit power; and to perform iterations of the SIMs for one or more beam pairs that meet a criterion, wherein the iterations of the SIMs are based on a second transmit power that is greater than the first transmit power.

[0136] Aspect 2 is the apparatus of aspect 1, further comprising a transceiver coupled to the at least one processor.

[0137] Aspect 3 is the apparatus of aspects 1 and 2, further comprising the criterion corresponding to the measured cross-beam self-interference RSRP being less than a threshold.

[0138] Aspect 4 is the apparatus of aspects 1-3, further comprising the criterion corresponding to detected nuisance echo self-interference.

[0139] Aspect 5 is the apparatus of aspects 1-4, further comprising the criterion corresponding to a measured RTT greater than a threshold.

[0140] Aspect 5 is the apparatus of aspects 1-5, further comprising the at least one processor being further configured to receive a first SIM configuration from a second wireless device, wherein the SIM is executed with a first transmit power based on the first SIM configuration.

[0141] Aspect 7 is the apparatus of aspects 1-6, further comprising the at least one processor being further configured to report cross-beam measurements for the top beam pair candidate and the one or more beam pairs that meet the criterion based on SIM performed with the first transmit power.

[0142] Aspect 8 is the apparatus of aspects 1-7, further comprising the cross-beam measurement comprising one or more of cross-beam RSRP or cross-beam SINR.

[0143] Aspect 9 is the apparatus of aspects 1-8, further comprising the at least one processor being further configured to receive a second SIM configuration from a second wireless device based on at least the cross-beam measurement report, wherein the SIM is performed with a second transmit power based on the second SIM configuration.

[0144] Aspect 10 is the apparatus of Aspect 1-9, further comprising the at least one processor being further configured to repeat one or more additional iterations of SIM based on increasing the transmit power in each iteration, wherein the corresponding iterations are performed for a subset of beam pairs that meet the criteria based on measurements performed in the previous iteration.

[0145] Aspect 11 is the apparatus of aspects 1-10, further comprising the first wireless device repeating one or more additional iterations until a threshold number of iterations is reached or the full transmit power of the first wireless device is reached.

[0146] Aspect 12 is the apparatus of aspects 1-11, further comprising the at least one processor being further configured to receive an indication of a threshold number of iterations from the second wireless device, wherein the threshold number of iterations is determined by the second wireless device.

[0147] Aspect 13 is the apparatus of aspects 1-12, further comprising the first wireless device being a UE, an IAB node, or a subnode.

[0148] Aspect 14 is a wireless communication method for implementing any one of aspects 1-13.

[0149] Aspect 15 is an apparatus for wireless communication, comprising means for implementing any one of aspects 1-13.

[0150] Aspect 16 is a computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 1-13.

[0151] Aspect 17 is an apparatus for wireless communication at a first wireless device, the apparatus comprising a memory and at least one processor coupled to the memory and configured to configure a SIM configuration for a plurality of beam pairs based on a first transmit power; transmit the SIM configuration to a second wireless device; and receive cross-beam measurements from the second wireless device for a top beam pair candidate and one or more beam pairs that meet criteria based on the SIM performed with the first transmit power.

[0152] Aspect 18 is the apparatus of aspect 17, further comprising a transceiver coupled to the at least one processor.

[0153] Aspect 19 is the apparatus of aspects 17 and 18, further comprising the criterion corresponding to a measured cross-beam self-interference RSRP being less than a threshold.

[0154] Aspect 20 is the apparatus of aspects 17-19, further comprising the criterion corresponding to detected nuisance echo self-interference.

[0155] Aspect 21 is the apparatus of aspects 17-20, further comprising the criterion corresponding to a measured RTT greater than a threshold.

[0156] Aspect 22 is the apparatus of aspects 17-21, further comprising the at least one processor being further configured to transmit the first SIM configuration to the second wireless device, wherein the SIM is executed by the second wireless device with the first transmit power based on the first SIM configuration.

[0157] Aspect 23 is the apparatus of aspects 17-22, further comprising: the cross-beam measurement comprises one or more of cross-beam RSRP or cross-beam SINR.

[0158] Aspect 24 is the apparatus of aspects 17-23, further comprising the at least one processor being further configured to transmit a second SIM configuration to a second wireless device based on at least the cross-beam measurement report, wherein the SIM is performed with a second transmit power based on the second SIM configuration.

[0159] Aspect 25 is the apparatus of aspects 17-24, further comprising the second wireless device repeating one or more additional iterations of SIM based on increasing transmit power per iteration, wherein the respective iterations are performed for a subset of beam pairs that meet the criterion based on measurements performed in a previous iteration.

[0160] Aspect 26 is the apparatus of aspects 17-25, further comprising the second wireless device repeating one or more additional iterations until a threshold number of iterations is reached or the full transmit power of the second wireless device is reached.

[0161] Aspect 27 is the apparatus of aspects 17-26, further comprising the at least one processor being further configured to receive an indication of a threshold number of iterations from a second wireless device.

[0162] Aspect 28 is the apparatus of aspects 17-27, further comprising the threshold number of iterations being determined by the first wireless device.

[0163] Aspect 29 is the apparatus of aspects 17-28, further comprising the first wireless device being a base station, an IAB node, or a parent node.

[0164] Aspect 30 is a method of wireless communication for implementing any one of aspects 17-29.

[0165] Aspect 31 is an apparatus for wireless communication, comprising means for implementing any one of aspects 17-29.

[0166] Aspect 32 is a computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any of aspects 17-29.

Claims

1. An apparatus for wireless communication at a first wireless device, comprising: Memory; as well as at least one processor coupled to the memory and configured to: performing self-interference measurements (SIM) for the plurality of beam pairs based on the first transmit power; as well as The iteration of the SIM is performed for one or more beam pairs that meet a criterion, wherein the iteration of the SIM is based on a second transmit power that is greater than the first transmit power.

2. The apparatus of claim 1, further comprising a transceiver coupled to the at least one processor.

3. The apparatus of claim 1, wherein the criterion corresponds to a measured cross-beam self-interference reference signal received power (RSRP) being less than a threshold. The apparatus of claim 1 , wherein the criterion corresponds to detected nuisance echo self-interference.

5. The apparatus of claim 4, wherein the criterion corresponds to a measured round trip time (RTT) greater than a threshold.

6. The apparatus of claim 1 , wherein the at least one processor is further configured to: A first SIM configuration is received from a second wireless device, wherein the SIM is performed with the first transmit power based on the first SIM configuration.

7. The apparatus of claim 1 , wherein the at least one processor is further configured to: Cross-beam measurements are reported for a top beam pair candidate and the one or more beam pairs that meet the criteria based on the SIM performed with the first transmit power.

8. The apparatus of claim 7, wherein the cross-beam measurement comprises one or more of cross-beam reference signal received power (RSRP) or cross-beam signal to interference plus noise ratio (SINR).

9. The apparatus of claim 1 , wherein the at least one processor is further configured to: A second SIM configuration is received from a second wireless device based on at least the cross-beam measurement report, wherein the SIM is performed with the second transmit power based on the second SIM configuration.

10. The apparatus of claim 1 , wherein the at least one processor is further configured to: One or more additional iterations of the SIM are repeated based on increasing transmit power at each iteration, wherein respective iterations are performed for a subset of beam pairs that meet the criterion based on measurements performed in a previous iteration.

11. The apparatus of claim 10, wherein the first wireless device repeats the one or more additional iterations until a threshold number of iterations is reached or a full transmit power of the first wireless device is reached.

12. The apparatus of claim 11 , wherein the at least one processor is further configured to: An indication of the threshold number of iterations is received from a second wireless device, wherein the threshold number of iterations is determined by the second wireless device.

13. The apparatus of claim 1, wherein the first wireless device is a user equipment (UE), an integrated access and backhaul (IAB) node, or a subnode.

14. A method of wireless communication at a first wireless device, comprising: performing self-interference measurements (SIM) for the plurality of beam pairs based on the first transmit power; as well as The iteration of the SIM is performed for one or more beam pairs that meet a criterion, wherein the iteration of the SIM is based on a second transmit power that is greater than the first transmit power.

15. The method of claim 14, wherein the criterion corresponds to a measured cross-beam self-interference reference signal received power (RSRP) being less than a threshold. The method of claim 14 , wherein the criterion corresponds to detected nuisance echo self-interference.

17. The method of claim 16, wherein the criterion corresponds to a measured round trip time (RTT) greater than a threshold.

18. The method of claim 14, further comprising: A first SIM configuration is received from a second wireless device, wherein the SIM is performed with the first transmit power based on the first SIM configuration.

19. The method of claim 14, further comprising: Cross-beam measurements are reported for a top beam pair candidate and the one or more beam pairs that meet the criteria based on the SIM performed with the first transmit power.

20. The method of claim 19, wherein the cross-beam measurement comprises one or more of cross-beam reference signal received power (RSRP) or cross-beam signal to interference plus noise ratio (SINR).

21. The method of claim 14, further comprising: A second SIM configuration is received from a second wireless device based on at least the cross-beam measurement report, wherein the SIM is performed with the second transmit power based on the second SIM configuration.

22. The method of claim 14, further comprising: One or more additional iterations of the SIM are repeated based on increasing transmit power at each iteration, wherein respective iterations are performed for a subset of beam pairs that meet the criterion based on measurements performed in a previous iteration.

23. The method of claim 22, wherein the first wireless device repeats the one or more additional iterations until a threshold number of iterations is reached or a full transmit power of the first wireless device is reached.

24. The method of claim 23, further comprising: An indication of the threshold number of iterations is received from a second wireless device, wherein the threshold number of iterations is determined by the second wireless device.

25. The method of claim 14, wherein the first wireless device is a user equipment (UE), an integrated access and backhaul (IAB) node, or a subnode.

26. An apparatus for wireless communication at a first wireless device, comprising: Memory; as well as at least one processor coupled to the memory and configured to: configuring a self-interference measurement (SIM) configuration for the plurality of beam pairs based on the first transmit power; transmitting the SIM configuration to a second wireless device; as well as Cross-beam measurements are received from the second wireless device for a top beam pair candidate having a highest cross-beam measurement and one or more beam pairs that meet criteria based on SIM performed with the first transmit power.

27. The apparatus of claim 26, further comprising a transceiver coupled to the at least one processor.

28. The apparatus of claim 26, wherein the criterion corresponds to a measured cross-beam self-interference reference signal received power (RSRP) being less than a threshold.

29. The apparatus of claim 26, wherein the criterion corresponds to detected nuisance echo self-interference.

30. The apparatus of claim 29, wherein the criterion corresponds to a measured round trip time (RTT) greater than a threshold.

31. The apparatus of claim 26, wherein the at least one processor is further configured to: A first SIM configuration is transmitted to the second wireless device, wherein the SIM is executed by the second wireless device based on the first SIM configuration with the first transmit power.

32. The apparatus of claim 26, wherein the cross-beam measurement comprises one or more of cross-beam reference signal received power (RSRP) or cross-beam signal to interference plus noise ratio (SINR).

33. The apparatus of claim 26, wherein the at least one processor is further configured to: A second SIM configuration is transmitted to the second wireless device based on at least the cross-beam measurement report, wherein the SIM is performed with a second transmit power based on the second SIM configuration.

34. The apparatus of claim 26, wherein the second wireless device repeats one or more additional iterations of the SIM based on increasing transmit power per iteration, wherein respective iterations are performed for a subset of beam pairs that meet the criterion based on measurements performed in a previous iteration.

35. The apparatus of claim 34, wherein the second wireless device repeats the one or more additional iterations until a threshold number of iterations is reached or a full transmit power of the second wireless device is reached.

36. The apparatus of claim 35, wherein the at least one processor is further configured to: An indication of the threshold number of iterations is received from the second wireless device.

37. The apparatus of claim 35, wherein the threshold number of iterations is determined by the first wireless device.

38. The apparatus of claim 26, wherein the first wireless device is a base station, an integrated access and backhaul (IAB) node, or a parent node.

39. A method of wireless communication at a first wireless device, comprising: configuring a self-interference measurement (SIM) configuration for the plurality of beam pairs based on the first transmit power; transmitting the SIM configuration to a second wireless device; as well as Cross-beam measurements are received from the second wireless device for a top beam pair candidate having a highest cross-beam measurement and one or more beam pairs that meet criteria based on SIM performed with the first transmit power.

40. The method of claim 39, wherein the criterion corresponds to a measured cross-beam self-interference reference signal received power (RSRP) being less than a threshold.

41. The method of claim 39, wherein the criterion corresponds to detected nuisance echo self-interference.

42. The method of claim 41, wherein the criterion corresponds to a measured round trip time (RTT) greater than a threshold.

43. The method of claim 39, further comprising: A first SIM configuration is transmitted to the second wireless device, wherein the SIM is executed by the second wireless device based on the first SIM configuration with the first transmit power.

44. The method of claim 39, wherein the cross-beam measurement comprises one or more of cross-beam reference signal received power (RSRP) or cross-beam signal to interference plus noise ratio (SINR).

45. The method of claim 39, further comprising: A second SIM configuration is transmitted to the second wireless device based on at least the cross-beam measurement report, wherein the SIM is performed with a second transmit power based on the second SIM configuration.

46. ​​The method of claim 39, wherein the second wireless device repeats one or more additional iterations of the SIM based on increasing transmit power per iteration, wherein respective iterations are performed for a subset of beam pairs that meet the criterion based on measurements performed in a previous iteration.

47. The method of claim 46, wherein the second wireless device repeats the one or more additional iterations until a threshold number of iterations is reached or a full transmit power of the second wireless device is reached.

48. The method of claim 47, further comprising: An indication of the threshold number of iterations is received from the second wireless device.

49. The method of claim 47, wherein the threshold number of iterations is determined by the first wireless device.

50. The method of claim 39, wherein the first wireless device is a base station, an integrated access and backhaul (IAB) node, or a parent node.

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