Error detection for over the air aggregation of federated ai-ML training model parameters

Abstract

A method for wireless communication at a network entity and related apparatus are provided. In the method, the network entity receives, from each UE of a set of multiple UEs, communication information. The communication information includes one or more data values associated with communication between the UE and the network entity, and one or more error detection values associated with the one or more data values. The data values are represented as analog values or integer values associated with a first set of lattice points, and the error detection values are represented as analog values or integer values associated with a second set of lattice points. The network entity performs a data corrective measure with the set of multiple UEs based on an error determined for data values based on the OTA summation of the data values and the OTA summation of error detection values.

Description

Qualcomm Ref. No. 2501845 WO 1 / 84ERROR DETECTION FOR OVER THE AIR AGGREGATION OF FEDERATED AI-ML TRAINING MODEL PARAMETERSCROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims the benefit of U. S. Non-Provisional Patent Application No.19 / 180,972, entitled “ERROR DETECTION FOR OVER THE AIR AGGREGATION OF FEDERATED AI-ML TRAINING MODEL PARAMETERS” and filed on April 16, 2025, which is expressly incorporated by reference herein in its entirety.TECHNICAL FIELD

[0002] The present disclosure relates generally to communication systems and, more particularly, to error detection and correction for wireless communication.INTRODUCTION

[0003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may 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) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.

[0004] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3 GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT)), and other requirements. 5G NR129025-2652WO01Qualcomm Ref. No. 2501845 WO 2 / 84includes 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, and some aspects of future wireless communication technologies may be based on aspects of 5G NR. Some aspects of later wireless communication, such as 6G or others, may be based on aspects of 5G NR and / or 4G LTE. There exists a need for further improvements in 5G NR technology and additional wireless communication technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies.BRIEF SUMMARY

[0005] The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects. This summary neither identifies key or critical elements of all aspects nor delineates 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.

[0006] In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided for wireless communication at a first user equipment (UE). The apparatus may include at least one memory and at least one processor coupled to the at least one memory. Based at least in part on information stored in the at least one memory, the at least one processor may be configured to transmit, to a network entity, communication information, where the communication information includes: one or more data values associated with communication between the first UE and the network entity, and one or more error detection values associated with the one or more data values, where the one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points; and perform, based on a corrective measure indication from the network entity, a data corrective measure with the network entity, where an error on the one or more data values is based on a first over-the-air (OTA) summation129025-2652WO01Qualcomm Ref. No. 2501845 WO 3 / 84of the one or more data values from a set of multiple UEs including the first UE and a second OTA summation of error detection values from the set of multiple UEs.

[0007] In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided for wireless communication at a network entity. The apparatus may include at least one memory and at least one processor coupled to the at least one memory. Based at least in part on information stored in the at least one memory, the at least one processor may be configured to receive, from each UE of a set of multiple UEs, communication information, where for each UE in the set of multiple UEs, the communication information includes: one or more data values associated with communication between the UE and the network entity, and one or more error detection values associated with the one or more data values, where the one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points; and perform a data corrective measure with the set of multiple UEs based on an error determined for data values based on a first OTA summation of the data values from the set of multiple UEs and a second OTA summation of error detection values received from the set of multiple UEs.

[0008] To the accomplishment of the foregoing and related ends, the one or more aspects may include the features hereinafter fully described and particularly pointed out in the claims. The following description and the drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed.BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG. l is a diagram illustrating an example of a wireless communication system and an access network.

[0010] FIG. 2A is a diagram illustrating an example of a first frame, in accordance with various aspects of the present disclosure.

[0011] FIG. 2B is a diagram illustrating an example of downlink (DL) channels within a subframe, in accordance with various aspects of the present disclosure.129025-2652WO01Qualcomm Ref. No. 2501845 WO 4 / 84

[0012] FIG. 2C is a diagram illustrating an example of a second frame, in accordance with various aspects of the present disclosure.

[0013] FIG. 2D is a diagram illustrating an example of uplink (UL) channels within a subframe, in accordance with various aspects of the present disclosure.

[0014] FIG. 3 is a diagram illustrating an example of a base station and user equipment (UE) in an access network.

[0015] FIG. 4 is an illustrative block diagram of an example machine learning (ML) model represented by an artificial neural network (ANN), in accordance with various aspects of the present disclosure.

[0016] FIG. 5 is a diagram illustrating an example of an artificial intelligence (Al) and machine learning (ML) (AI / ML) algorithm of a method of wireless communication.

[0017] FIG. 6 is a diagram illustrating an example of federated Al training.

[0018] FIG. 7 is a diagram illustrating an example of over-the-air (OTA) aggregation for federated Al training.

[0019] FIG. 8A is a diagram illustrating an example of a two-dimensional cartesian lattice.

[0020] FIG. 8B is a diagram illustrating an example of a two-dimensional hexagonal lattice.

[0021] FIG. 9 shows diagrams illustrating an example of using lattice for quantization and coding of federated learning in accordance with various aspects of the present disclosure.

[0022] FIG. 10 is a call flow diagram illustrating a method of wireless communication in accordance with various aspects of the present disclosure.

[0023] FIG. 11 is a flowchart illustrating methods of wireless communication at a first UE in accordance with various aspects of the present disclosure.

[0024] FIG. 12 is a flowchart illustrating methods of wireless communication at a network entity in accordance with various aspects of the present disclosure.

[0025] FIG. 13 is a diagram illustrating an example of a hardware implementation for an example apparatus and / or UE.

[0026] FIG. 14 is a diagram illustrating an example of a hardware implementation for an example network entity.DETAILED DESCRIPTION

[0027] In wireless communication, a base station may utilize a federated learning process to train a model, such as an artificial intelligence / machine learning (AI / ML) model, 129025-2652WO01Qualcomm Ref. No. 2501845 WO 5 / 84that can be used in communication with one or more user equipment (UE). The federated learning process allows each UE to process and transmit its data values (which may represent updated parameters for the model), while the base station may aggregate the data from multiple UEs for model training. Because each UE’s data is not shared with other UEs, user privacy is preserved. However, errors may occur during the transmission or reception of the data values from the UEs, resulting in incorrect estimated values when the base station aggregates the data values from multiple UEs. Example aspects provide an error detection mechanism for the over- the-air (OTA) aggregation (or summation) of federated training model parameters. This mechanism enhances the reliability of data transmission and aggregation processes, thereby improving the accuracy and robustness of the resulting models. Additionally, this mechanism ensures that even when analog OTA summation is used, the base station can detect errors on the original model parameters, thereby ensuring reliability and reproducibility of the training process.

[0028] Various aspects relate generally to wireless communication. Some aspects more specifically relate to error detection and correction for wireless communication. In some examples, a network entity may receive, from each UE of a set of multiple UEs, communication information. For each UE in the set of multiple UEs, the communication information includes: one or more data values associated with communication between the UE and the network entity, and one or more error detection values associated with the one or more data value. The one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points. The network entity may perform a data corrective measure with the set of multiple UEs based on an error determined for data values based on a first OTA summation of the data values from the set of multiple UEs and a second OTA summation of error detection values received from the set of multiple UEs. For example, the data corrective measure may include requesting a retransmission of the data values, or initiating an update process to coefficients of a pre-equalization process. In some examples, the communication information may include model information associated with an artificial intelligence or machine learning (AI / ML) model for the communication between the set of multiple UEs and the network entity. In some examples, the data values may be represented as analog values, and the model information from each UE of the set of 129025-2652WO01Qualcomm Ref. No. 2501845 WO 6 / 84multiple UEs may include a first number of analog values associated with the AI / ML model and a second number of error detection values received from the set of multiple UEs, and the second number is less than the first number. In some examples, the data values may be quantized based on the first set of lattice points and may be represented by a first set of integer values associated with the first set of lattice points, and the model information from each UE of the set of multiple UEs may include a first number of data values associated with the AI / ML model represented by the first set of integer values and a second number of received error detection values. The second number of received error detection values may be generated using a second set of lattice points and are represented by a second set of integer values associated with the second set of lattice points, and the second number may be less than the first number.

[0029] Particular aspects of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. In some examples, by providing a robust mechanism for error detection in OTA aggregation of federated learning model parameters, the described techniques ensure training performance is not compromised even under noisy channel conditions, thereby enhancing the reliability and accuracy of federated model training. In some examples, by leveraging lattice-based encoding and quantization, the described techniques ensure that even when analog OTA summation is used, the base station can detect errors on the original model parameters, thereby ensuring reliability and reproducibility of the training process. In some examples, by supporting partial retransmission through element-wise error comparison, the described techniques allow affected data segments to be resent instead of the entire data packet, thereby reducing overhead and improving resource efficiency.

[0030] The detailed description set forth below in connection with the drawings describes various configurations and does not represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of various concepts. However, these concepts may be practiced without these specific details. In some instances, well known structures and components are shown in block diagram form in order to avoid obscuring such concepts.

[0031] Several aspects of telecommunication systems are 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, 129025-2652WO01Qualcomm Ref. No. 2501845 WO 7 / 84components, circuits, processes, algorithms, etc. (collectively referred to as “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 upon the particular application and design constraints imposed on the overall system.

[0032] By way of example, an element, or any portion of an element, or any combination of elements may be implemented as a “processing system” that includes one or more processors. When multiple processors are implemented, the multiple processors may perform the functions individually or in combination. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on a chip (SoC), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure. One or more processors in the processing system may execute software. Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.

[0033] Accordingly, in one or more example aspects, implementations, and / or use cases, the functions described may be implemented in hardware, software, or any combination thereof. If implemented in software, the functions may be stored on or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media may be any available media that can be accessed by a computer. By way of example, such computer-readable media can include a random-access memory (RAM), a read-only memory (ROM), an electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the types of computer- readable media, or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer.129025-2652WO01Qualcomm Ref. No. 2501845 WO 8 / 84

[0034] While aspects, implementations, and / or use cases are described in this application by illustration to some examples, additional or different aspects, implementations and / or use cases may come about in many different arrangements and scenarios. Aspects, implementations, and / or use cases described herein may be implemented across many differing platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, aspects, implementations, and / or use cases may come about via integrated chip implementations and other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing devices, medical devices, artificial intelligence (Al)-enabled devices, etc.). While some examples may or may not be specifically directed to use cases or applications, a wide assortment of applicability of described examples may occur. Aspects, implementations, and / or use cases may range a spectrum from chip-level or modular components to non-modular, non-chip- level implementations and further to aggregate, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more techniques herein. In some practical settings, devices incorporating described aspects and features may also include additional components and features for implementation and practice of claimed and described aspect. For example, transmission and reception of wireless signals necessarily includes a number of components for analog and digital purposes (e.g., hardware components including antenna, RF-chains, power amplifiers, modulators, buffer, processor(s), interleaver, adders / summers, etc.). Techniques described herein may be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, etc. of varying sizes, shapes, and constitution.

[0035] Deployment of communication systems, such as 5G NR systems, 6G systems etc., may be arranged in multiple manners with various components or constituent parts. In a 5GNR system, or network, a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element, or a network equipment, such as a base station (BS), or one or more units (or one or more components) performing base station functionality, may be implemented in an aggregated or disaggregated architecture. For example, a BS (such as a Node B (NB), evolved NB (eNB), NRBS, 5GNB, access point (AP), atransmission reception point (TRP), or a cell, etc.) may be implemented as an aggregated base station (also known as a standalone BS or a monolithic BS) or a disaggregated base station. 129025-2652WO01Qualcomm Ref. No. 2501845 WO 9 / 84

[0036] An aggregated base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node. A disaggregated base station may be configured to utilize a protocol stack that is physically or logically distributed among two or more units (such as one or more central or centralized units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)). In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed throughout one or multiple other RAN nodes. The DUs may be implemented to communicate with one or more RUs. Each of the CU, DU and RU can be implemented as virtual units, i.e., a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).

[0037] Base station operation or network design may consider aggregation characteristics of base station functionality. For example, disaggregated base stations may be utilized in an integrated access backhaul (IAB) network, an open radio access network (O- RAN (such as the network configuration sponsored by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)). Disaggregation may include distributing functionality across two or more units at various physical locations, as well as distributing functionality for at least one unit virtually, which can enable flexibility in network design. The various units of the disaggregated base station, or disaggregated RAN architecture, can be configured for wired or wireless communication with at least one other unit.

[0038] FIG. 1 is a diagram 100 illustrating an example of a wireless communications system and an access network. The illustrated wireless communications system includes a disaggregated base station architecture. The disaggregated base station architecture may include one or more CUs 110 that can communicate directly with a core network 120 via a backhaul link, or indirectly with the core network 120 through one or more disaggregated base station units (such as a Near-Real Time (Near-RT) RAN Intelligent Controller (RIC) 125 via an E2 link, or a Non-Real Time (Non-RT) RIC 115 associated with a Service Management and Orchestration (SMO) Framework 105, or both). A CU 110 may communicate with one or more DUs 130 via respective midhaul links, such as an Fl interface. The DUs 130 may communicate with one or more RUs 140 via respective fronthaul links. The RUs 140 may communicate with respective UEs 104 via one or more radio frequency (RF) access links. In some implementations, the UE 104 may be simultaneously served by multiple RUs 140. 129025-2652WO01Qualcomm Ref. No. 2501845 WO 10 / 84

[0039] Each of the units, i.e., the CUs 110, the DUs 130, the RUs 140, as well as the Near- RT RICs 125, the Non-RT RICs 115, and the SMO Framework 105, may include one or more interfaces or be coupled to one or more interfaces configured to receive or to transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units, or an associated processor or controller providing instructions to the communication interfaces of the units, can be configured to communicate with one or more of the other units via the transmission medium. For example, the units can include a wired interface configured to receive or to transmit signals over a wired transmission medium to one or more of the other units. Additionally, the units can include a wireless interface, which may include a receiver, a transmitter, or a transceiver (such as an RF transceiver), configured to receive or to transmit signals, or both, over a wireless transmission medium to one or more of the other units.

[0040] In some aspects, the CU 110 may host one or more higher layer control functions.Such control functions can include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), or the like. Each control function can be implemented with an interface configured to communicate signals with other control functions hosted by the CU 110. The CU 110 may be configured to handle user plane functionality (i.e., Central Unit - User Plane (CU-UP)), control plane functionality (i.e., Central Unit - Control Plane (CU-CP)), or a combination thereof. In some implementations, the CU 110 can be logically split into one or more CU-UP units and one or more CU-CP units. The CU-UP unit can communicate bidirectionally with the CU-CP unit via an interface, such as an El interface when implemented in an O-RAN configuration. The CU 110 can be implemented to communicate with the DU 130, as necessary, for network control and signaling.

[0041] The DU 130 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 140. In some aspects, the DU 130 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation, demodulation, or the like) depending, at least in part, on a functional split, such as those defined by 3 GPP. In some aspects, the DU 130 may further host one or more low PHY layers. Each layer (or module) can be implemented with an interface 129025-2652WO01Qualcomm Ref. No. 2501845 WO 11 / 84configured to communicate signals with other layers (and modules) hosted by the DU 130, or with the control functions hosted by the CU 110.

[0042] Lower-layer functionality can be implemented by one or more RUs 140. In some deployments, an RU 140, controlled by a DU 130, may correspond to a logical node that hosts RF processing functions, or low-PHY layer functions (such as performing fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, physical random access channel (PRACH) extraction and filtering, or the like), or both, based at least in part on the functional split, such as a lower layer functional split. In such an architecture, the RU(s) 140 can be implemented to handle over the air (OTA) communication with one or more UEs 104. In some implementations, real-time and non-real-time aspects of control and user plane communication with the RU(s) 140 can be controlled by the corresponding DU 130. In some scenarios, this configuration can enable the DU(s) 130 and the CU 110 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.

[0043] The SMO Framework 105 may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO Framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements that may be managed via an operations and maintenance interface (such as an 01 interface). For virtualized network elements, the SMO Framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 190) to perform network element life cycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an 02 interface). Such virtualized network elements can include, but are not limited to, CUs 110, DUs 130, RUs 140 and Near-RT RICs 125. In some implementations, the SMO Framework 105 can communicate with a hardware aspect of a 4G RAN, such as an open eNB (O- eNB) 111, via an 01 interface. Additionally, in some implementations, the SMO Framework 105 can communicate directly with one or more RUs 140 via an 01 interface. The SMO Framework 105 also may include a Non-RT RIC 115 configured to support functionality of the SMO Framework 105.

[0044] The Non-RT RIC 115 may be configured to include a logical function that enables non-real-time control and optimization of RAN elements and resources, artificial intelligence (Al) / machine learning (ML) (AI / ML) workflows including model training and updates, or policy-based guidance of applications / features in the Near- 129025-2652WO01Qualcomm Ref. No. 2501845 WO 12 / 84RT RIC 125. The Non-RT RIC 115 may be coupled to or communicate with (such as via an A1 interface) the Near-RT RIC 125. The Near-RT RIC 125 may be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions over an interface (such as via an E2 interface) connecting one or more CUs 110, one or more DUs 130, or both, as well as an O-eNB, with the Near-RT RIC 125.

[0045] In some implementations, to generate AI / ML models to be deployed in the Near-RT RIC 125, the Non-RT RIC 115 may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 125 and may be received at the SMO Framework 105 or the Non-RT RIC 115 from non-network data sources or from network functions. In some examples, the Non-RT RIC 115 or the Near-RT RIC 125 may be configured to tune RAN behavior or performance. For example, the Non-RT RIC 115 may monitor long-term trends and patterns for performance and employ AI / ML models to perform corrective actions through the SMO Framework 105 (such as reconfiguration via 01) or via creation of RAN management policies (such as A1 policies).

[0046] At least one of the CU 110, the DU 130, and the RU 140 may be referred to as a base station 102. Accordingly, a base station 102 may include one or more of the CU 110, the DU 130, and the RU 140 (each component indicated with dotted lines to signify that each component may or may not be included in the base station 102). The base station 102 provides an access point to the core network 120 for a UE 104. The base station 102 may include macrocells (high power cellular base station) and / or small cells (low power cellular base station). The small cells include femtocells, picocells, and microcells. A network that includes both small cell and macrocells may be known as a heterogeneous network. A heterogeneous network may also include Home Evolved Node Bs (eNBs) (HeNBs), which may provide service to a restricted group known as a closed subscriber group (CSG). The communication links between the RUs 140 and the UEs 104 may include uplink (UL) (also referred to as reverse link) transmissions from a UE 104 to an RU 140 and / or downlink (DL) (also referred to as forward link) transmissions from an RU 140 to a UE 104. The communication links may use multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication links may be through one or more carriers. The base station 102 / UEs 104 may use spectrum up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) bandwidth per carrier 129025-2652WO01Qualcomm Ref. No. 2501845 WO 13 / 84allocated in a carrier aggregation of up to a total of Y × MHz (x component carriers) used for transmission in each direction. The carriers may or may not be adjacent to each other. Allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL than for UL). The component carriers may include a primary component carrier and one or more secondary component carriers. A primary component carrier may be referred to as a primary cell (PCell) and a secondary component carrier may be referred to as a secondary cell (SCell).

[0047] Certain UEs 104 may communicate with each other using device-to-device (D2D) communication link 158. The D2D communication link 158 may use the DL / UL wireless wide area network (WWAN) spectrum. The D2D communication link 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 through a variety of wireless D2D communications systems, such as for example, Bluetooth™ (Bluetooth is a trademark of the Bluetooth Special Interest Group (SIG)), Wi-Fi™ (Wi-Fi is a trademark of the Wi-Fi Alliance) based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0048] The wireless communications system may further include a Wi-Fi AP 150 in communication with UEs 104 (also referred to as Wi-Fi stations (STAs)) via communication link 154, e.g., in a 5 GHz unlicensed frequency spectrum or the like. When communicating in an unlicensed frequency spectrum, the UEs 104 / AP 150 may perform a clear channel assessment (CCA) prior to communicating in order to determine whether the channel is available.

[0049] The electromagnetic spectrum is often subdivided, based on frequency / wavelength, into various classes, bands, channels, etc. In 5GNR, 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 referred to (interchangeably) as a “sub-6 GHz” band in various documents and articles. A similar nomenclature issue sometimes occurs with regard to FR2, which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz - 300 GHz) which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band.129025-2652WO01Qualcomm Ref. No. 2501845 WO 14 / 84

[0050] The frequencies between FR1 and FR2 are often referred to as mid-band frequencies.Recent 5G NR studies have identified an operating band for these mid-band frequencies as frequency range designation FR3 (7.125 GHz - 24.25 GHz). Frequency bands falling within FR3 may inherit FR1 characteristics and / or FR2 characteristics, and thus may effectively extend features of FR1 and / or FR2 into midband frequencies. In addition, higher frequency bands are currently being explored to extend 5GNR operation beyond 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR2-2 (52.6 GHz - 71 GHz), FR4 (71 GHz - 114.25 GHz), and FR5 (114.25 GHz - 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0051] With the above aspects in mind, unless specifically stated otherwise, the term “sub-6GHz” or the like if used herein may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. Further, unless specifically stated otherwise, the term “millimeter wave” or the like if used herein may broadly represent frequencies that may include mid-band frequencies, may be within FR2, FR4, FR2-2, and / or FR5, or may be within the EHF band.

[0052] The base station 102 and the UE 104 may each include a plurality of antennas, such as antenna elements, antenna panels, and / or antenna arrays to facilitate beamforming. The base station 102 may transmit a beamformed signal 182 to the UE 104 in one or more transmit directions. The UE 104 may receive the beamformed signal from the base station 102 in one or more receive directions. The UE 104 may also transmit a beamformed signal 184 to the base station 102 in one or more transmit directions. The base station 102 may receive the beamformed signal from the UE 104 in one or more receive directions. The base station 102 / UE 104 may perform beam training to determine the best receive and transmit directions for each of the base station 102 / UE 104. The transmit and receive directions for the base station 102 may or may not be the same. The transmit and receive directions for the UE 104 may or may not be the same.

[0053] The base station 102 may include and / or be referred to as a gNB, Node B, 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 TRP, network node, network entity, network equipment, or some other suitable terminology. The base station 102 can be implemented as an integrated access and backhaul (IAB) node, a relay node, a sidelink node, an aggregated (monolithic) base 129025-2652WO01Qualcomm Ref. No. 2501845 WO 15 / 84station with a baseband unit (BBU) (including a CU and a DU) and an RU, or as a disaggregated base station including one or more of a CU, a DU, and / or an RU. The set of base stations, which may include disaggregated base stations and / or aggregated base stations, may be referred to as next generation (NG) RAN (NG-RAN).

[0054] The core network 120 may include an Access and Mobility Management Function (AMF) 161, a Session Management Function (SMF) 162, a User Plane Function (UPF) 163, a Unified Data Management (UDM) 164, one or more location servers 168, and other functional entities. The AMF 161 is the control node that processes the signaling between the UEs 104 and the core network 120. The AMF 161 supports registration management, connection management, mobility management, and other functions. The SMF 162 supports session management and other functions. The UPF 163 supports packet routing, packet forwarding, and other functions. The UDM 164 supports the generation of authentication and key agreement (AKA) credentials, user identification handling, access authorization, and subscription management. The one or more location servers 168 are illustrated as including a Gateway Mobile Location Center (GMLC) 165 and a Location Management Function (LMF) 166. However, generally, the one or more location servers 168 may include one or more location / positioning servers, which may include one or more of the GMLC 165, the LMF 166, a position determination entity (PDE), a serving mobile location center (SMLC), a mobile positioning center (MPC), or the like. The GMLC 165 and the LMF 166 support UE location services. The GMLC 165 provides an interface for clients / applications (e.g., emergency services) for accessing UE positioning information. The LMF 166 receives measurements and assistance information from the NG-RAN and the UE 104 via the AMF 161 to compute the position of the UE 104. The NG-RAN may utilize one or more positioning methods in order to determine the position of the UE 104. Positioning the UE 104 may involve signal measurements, a position estimate, and an optional velocity computation based on the measurements. The signal measurements may be made by the UE 104 and / or the base station 102 serving the UE 104. The signals measured may be based on one or more of a satellite positioning system (SPS) 170 (e.g., one or more of a Global Navigation Satellite System (GNSS), global position system (GPS), non-terrestrial network (NTN), or other satellite position / location system), LTE signals, wireless local area network (WLAN) signals, Bluetooth signals, a terrestrial beacon system (TBS), sensor-based information (e.g., barometric pressure sensor, motion sensor), NR enhanced cell ID 129025-2652WO01Qualcomm Ref. No. 2501845 WO 16 / 84(NRE-CID) methods, NR signals (e.g., multi -round trip time (Multi -RTT), DL angle- of-departure (DL-AoD), DL time difference of arrival (DL-TDOA), UL time difference of arrival (UL-TDOA), and UL angle-of-arrival (UL-AoA) positioning), and / or other systems / signals / sensors.

[0055] Examples of UEs 104 include a cellular phone, a smart phone, 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., MP3 player), a camera, a game console, a tablet, 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 similar functioning device. Some of the UEs 104 may be referred to as loT devices (e.g., parking meter, gas pump, toaster, vehicles, heart monitor, etc.). The 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 communications 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. In some scenarios, the term UE may also apply to one or more companion devices such as in a device constellation arrangement. One or more of these devices may collectively access the network and / or individually access the network.

[0056] Referring again to FIG. 1, in certain aspects, the UE 104 may include the error detection component 198. The error detection component 198 may be configured to transmit, to a network entity, communication information, where the communication information includes: one or more data values associated with communication between the first UE and the network entity, and one or more error detection values associated with the one or more data values, where the one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points; and perform, based on a corrective measure indication from the network entity, a data corrective measure with the network entity, where an error on the one or more data values is based on a first OTA summation of the one or more data values from a set of multiple UEs including the first UE and a second OTA summation of error detection values from the set of multiple UEs. In certain aspects, the base station 102 may include the error detection 129025-2652WO01Qualcomm Ref. No. 2501845 WO 17 / 84component 199. The error detection component 199 may be configured to receive, from each UE of a set of multiple UEs, communication information, where for each UE in the set of multiple UEs, the communication information includes: one or more data values associated with communication between the UE and the network entity, and one or more error detection values associated with the one or more data values, where the one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points; and perform a data corrective measure with the set of multiple UEs based on an error determined for data values based on a first OTA summation of the data values from the set of multiple UEs and a second OTA summation of error detection values received from the set of multiple UEs. Although the following description may give examples based on 5G NR to illustrate concepts relating to wireless communication, the concepts described herein may be applicable to other similar areas, such as LTE, LTE-A, CDMA, GSM, 6G, and other wireless technologies.

[0057] FIG. 2A is a diagram 200 illustrating an example of a first subframe within a frame structure. FIG. 2B is a diagram 230 illustrating an example of DL channels within a subframe. FIG. 2C is a diagram 250 illustrating an example of a second subframe within a frame structure. FIG. 2D is a diagram 280 illustrating an example of UL channels within a subframe. The examples in FIGs. 2A-2D show example aspects of a frame structure based on 5G NR to illustrate the concept of a frame structure and wireless communication based on a frame structure. Various aspects described in connection with FIGs. 2A-2D may also be used in connection with other wireless communication technologies, such as 6G among other examples. The frequency division duplexed (FDD) in which for a particular set of subcarriers (carrier system bandwidth), subframes within the set of subcarriers are dedicated for either DL or UL, or may be time division duplexed (TDD) in which for a particular set of subcarriers (carrier system bandwidth), subframes within the set of subcarriers are dedicated for both DL and UL. In the examples provided by FIGs. 2A, 2C, the 5G NR frame structure is assumed to be TDD, with subframe 4 being configured with slot format 28 (with mostly DL), where D is DL, U is UL, and F is flexible for use between DL / UL, and subframe 3 being configured with slot format 1 (with all UL). While subframes 3, 4 are shown with slot formats 1, 28, respectively, any particular 129025-2652WO01Qualcomm Ref. No. 2501845 WO 18 / 84subframe may be configured with any of the various available slot formats 0-61. Slot formats 0, 1 are all DL, UL, respectively. Other slot formats 2-61 include a mix of DL, UL, and flexible symbols. UEs are configured with the slot format (dynamically through DL control information (DCI), or semi-statically / statically through radio resource control (RRC) signaling) through a received slot format indicator (SFI). Note that the description infra applies also to a 5G NR frame structure that is TDD.

[0058] FIGs. 2A-2D illustrate a frame structure, and the aspects of the present disclosure may be applicable to other wireless communication technologies, which may have a different frame structure and / or different channels. A frame (10 ms) may be divided into 10 equally sized subframes (1 ms). Each subframe may include one or more time slots. Subframes may also include mini-slots, which may include 7, 4, or 2 symbols. Each slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For normal CP, each slot may include 14 symbols, and for extended CP, each slot may include 12 symbols. The symbols on DL may be CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbols. The symbols on UL may be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (for power limited scenarios; limited to a single stream transmission). The number of slots within a subframe is based on the CP and the numerology. The numerology defines the subcarrier spacing (SCS) (see Table 1). The symbol length / duration may scale with 1 / SCS.Table 1: Numerology, SCS, and CP129025-2652WO01Qualcomm Ref. No. 2501845 WO 19 / 84

[0059] For normal CP (14 symbols / slot), different numerologies p 0 to 4 allow for 1, 2, 4, 8, and 16 slots, respectively, per subframe. For extended CP, the numerology 2 allows for 4 slots per subframe. Accordingly, for normal CP and numerology μ, there are 14 symbols / slot and 2μslots / subframe. The subcarrier spacing may be equal to 2μ× 15 kHz, where μ is the numerology 0 to 4. As such, the numerology μ=0 has a subcarrier spacing of 15 kHz and the numerology μ=4 has a subcarrier spacing of 240 kHz. The symbol length / duration is inversely related to the subcarrier spacing. FIGs.2A-2D provide an example of normal CP with 14 symbols per slot and numerology μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 ps. Within a set of frames, there may be one or more different bandwidth parts (BWPs) (see FIG. 2B) that are frequency division multiplexed. Each BWP may have a particular numerology and CP (normal or extended).

[0060] A resource grid may be used to represent the frame structure. Each time slot includes a resource block (RB) (also referred to as physical RBs (PRBs)) that extends 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.

[0061] As illustrated in FIG. 2 A, some of the REs carry reference (pilot) signals (RS) for the UE. The RS may include demodulation RS (DM-RS) (indicated as R for one particular configuration, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS) for channel estimation at the UE. The RS may also include beam measurement RS (BRS), beam refinement RS (BRRS), and phase tracking RS (PT-RS).

[0062] FIG. 2B illustrates an example of various DL channels within a subframe of a frame.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 including six RE groups (REGs), each REG including 12 consecutive REs in an OFDM symbol of an RB. A PDCCH within one BWP may be referred to as a control resource set (CORESET). A UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., common search space, UE-specific search space) during PDCCH monitoring occasions on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at greater and / or lower frequencies across the channel bandwidth. A primary synchronization signal (PSS) may be within symbol 2 of particular subframes of a 129025-2652WO01Qualcomm Ref. No. 2501845 WO 20 / 84frame. The PSS is used by a UE 104 to determine subframe / symbol timing and a physical layer identity. A secondary synchronization signal (SSS) may be within symbol 4 of particular subframes of a frame. The SSS is used by a UE to determine a 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 a physical cell identifier (PCI). Based on the PCI, the UE can determine the locations of the DM-RS. The physical broadcast channel (PBCH), which carries a master information block (MIB), may be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as SS block (SSB)). The MIB provides a number of RBs in the system bandwidth and a system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH such as system information blocks (SIBs), and paging messages.

[0063] As illustrated in FIG. 2C, some of the REs carry DM-RS (indicated as R for one particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may transmit DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH). The PUSCH DM-RS may be transmitted in the first one or two symbols of the PUSCH. The PUCCH DM-RS may be transmitted in different configurations depending on whether short or long PUCCHs are transmitted and depending on the particular PUCCH format used. The UE may transmit sounding reference signals (SRS). The SRS may be transmitted in the last symbol of a subframe. The SRS may have a comb structure, and a UE may transmit SRS on one of the combs. The SRS may be used by a base station for channel quality estimation to enable frequencydependent scheduling on the UL.

[0064] FIG. 2D illustrates an example of various UL channels within a subframe of a frame.The PUCCH may be located as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), and hybrid automatic repeat request (HARQ) acknowledgment (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACK and / or negative ACK (NACK)). The PUSCH carries data, and may additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.129025-2652WO01Qualcomm Ref. No. 2501845 WO 21 / 84

[0065] FIG. 3 is a block diagram of a base station 310 in communication with a UE 350 in an access network. In the DL, Internet protocol (IP) packets may be provided to a controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIBs), 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 the transfer of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs), re-segmentation 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.

[0066] The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes a physical (PHY) layer, may include error detection on the transport channels, forward error correction (FEC) coding / decoding of the transport channels, interleaving, rate matching, mapping onto physical channels, modulation / demodulation of physical channels, and MIMO antenna processing. The TX processor 316 handles mapping to signal constellations 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., pilot) in the time and / or frequency domain, and then combined together using an Inverse Fast Fourier Transform (IFFT) to produce a physical 129025-2652WO01Qualcomm Ref. No. 2501845 WO 22 / 84channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially precoded to produce multiple spatial streams. Channel estimates from a channel estimator 374 may be used to determine the coding and modulation scheme, as well as for spatial processing. The channel estimate may be derived from a reference signal and / or channel condition feedback transmitted by the UE 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 respective spatial stream for transmission.

[0067] At the UE 350, each receiver 354Rx receives a signal through its respective antenna 352. Each receiver 354Rx recovers information modulated onto an RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions. The RX processor 356 may perform spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they may be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then converts the OFDM symbol stream from the time-domain to the frequency domain using a Fast Fourier Transform (FFT). The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, and the reference signal, are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 310. These soft decisions may be based on channel estimates computed by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by the base station 310 on the physical channel. The data and control signals are then provided to the controller / processor 359, which implements layer 3 and layer 2 functionality.

[0068] The controller / processor 359 can be associated with at least one memory 360 that stores program codes and data. The at least one 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, deciphering, header decompression, and control signal processing to recover IP packets. The controller / processor 359 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.129025-2652WO01Qualcomm Ref. No. 2501845 WO 23 / 84

[0069] Similar to the functionality described in connection with the DL transmission by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting; PDCP layer functionality associated with header compression / decompression, and security (ciphering, deciphering, integrity protection, integrity verification); RLC layer functionality associated with the transfer of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation 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 TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0070] Channel estimates derived by a channel estimator 358 from a reference signal or feedback transmitted by the base station 310 may be used by the TX processor 368 to select the appropriate coding and modulation schemes, and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antenna 352 via separate transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a respective spatial stream for transmission.

[0071] The UL transmission is processed at the base station 310 in a manner similar to that described in connection with the receiver function at the UE 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 a RX processor 370.

[0072] The controller / processor 375 can be associated with at least one memory 376 that stores program codes and data. The at least one 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, deciphering, header decompression, control signal processing to recover IP packets. The controller / processor 375 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0073] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to perform aspects in connection with the error detection component 198 of FIG. 1.129025-2652WO01Qualcomm Ref. No. 2501845 WO 24 / 84

[0074] At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to perform aspects in connection with the error detection component 199 of FIG. 1.

[0075] Some aspects and techniques as described herein may be implemented, at least in part, using an artificial intelligence (Al) program, such as a program that includes a machine learning (ML) or artificial neural network (ANN) model. An example ML model may include mathematical representations or define computing capabilities for making inferences from input data based on patterns or relationships identified in the input data. As used herein, the term “inferences” can include one or more decisions, predictions, determinations, or values, which may represent outputs of the ML model. The computing capabilities may be defined in terms of certain parameters of the ML model, such as weights and biases. Weights may indicate relationships between certain input data and certain outputs of the ML model, and biases are offsets that may indicate a starting point for the outputs of the ML model. An example ML model operating on input data may start at an initial output based on the biases and then update its output based on a combination of the input data and the weights.

[0076] In some aspects, an ML model, also referred to as an AI / ML model in some aspects, may be configured to provide computing capabilities for wireless communications. Such an ML model may be configured with weights and biases to perform tasks such as beam prediction, CSI prediction, CSI compression / decompression, interference prediction, positioning, sensing, scheduling and resource selection, and / or reference signal design and optimization, among other examples.

[0077] ML models may be deployed in one or more devices (for example, network entities and user equipment (UE)) and may be configured to enhance various aspects of a wireless communication system. For example, an ML model may be trained to identify patterns or relationships in data corresponding to a network, a device, an air interface, or the like. An ML model may support operational decisions relating to one or more aspects associated with wireless communications devices, networks, or services. For example, an ML model may be utilized for supporting or improving aspects such as signal coding / decoding, network routing, energy conservation, transceiver circuitry controls, frequency synchronization, timing synchronization, channel state estimation, channel equalization, channel state feedback, modulation, demodulation, device positioning, beamforming, load balancing, operations and management functions, security, etc.129025-2652WO01Qualcomm Ref. No. 2501845 WO 25 / 84

[0078] ML models may be characterized in terms of types of learning that generate specific types of learned models that perform specific types of tasks. For example, different types of machine learning include supervised learning, unsupervised learning, semisupervised learning, reinforcement learning, deep learning, etc. ML models may be used to perform different tasks, such as classification or regression, where classification refers to determining one or more discrete output values from a set of predefined output values, and regression refers to determining continuous values that are not bounded by predefined output values. Some example ML models configured for performing such tasks include ANNs such as convolutional neural networks (CNNs) and recurrent neural networks (RNNs), transformers, diffusion models, regression analysis models (such as statistical models), large language models (LLMs), decision tree learning (such as predictive models), support vector networks (SVMs), and probabilistic graphical models (such as a Bayesian network), etc.

[0079] The description herein illustrates, by way of some examples, how one or more tasks or problems in wireless communications may benefit from the application of one or more ML models for the prediction of one or more channel characteristics associated with a second set of resources using measurement of the aperiodic reference signal on a first set of resources based on a first mapping pattern. The first mapping pattern maps the first set of resources to the second set of resources, and the first mapping pattern and a second mapping pattern associated with an initial training meet one or more of a spatial domain consistency condition or a temporal domain consistency condition. To facilitate the discussion, an ML model configured using an ANN is used, but other types of ML models may be used instead of an ANN. Hence, unless expressly recited, subject matter regarding an ML model is not intended to be limited to an ANN solution. Unless otherwise specifically stated, terms such “AI / ML model,” “ML model,” “trained ML mode,” “ANN,” “model,” “algorithm,” or the like are intended to be interchangeable.

[0080] FIG. 4 is an illustrative block diagram of an example machine learning (ML) model represented by an artificial neural network (ANN) 400. ANN 400 may receive input data 406, which may include one or more bits of data 402, pre-processed data output from pre-processor 404 (optional), or some combination thereof. Here, data 402 may include training data, verification data, application-related data, or the like, based, for example, on the stage of deployment of ANN 400. Pre-processor 404 may be included within ANN 400 in some other implementations. Pre-processor 404 may, for example, 129025-2652WO01Qualcomm Ref. No. 2501845 WO 26 / 84process all or a portion of data 402, which may result in some of data 402 being changed, replaced, deleted, etc. In some implementations, pre-processor 404 may add additional data to data 402. In some implementations, the pre-processor 404 may be an ML model, such as an ANN. As an example, the input for traffic classification may include traffic information or traffic pattern information. In other examples, the input may be different. For example, for beam prediction, the input may be measurements performed on a set-B of beams. For CSI prediction, compression, or decompression, the input may include one or more CSI measurements. For a model trained for interference prediction, the input may include one or more interference measurements, or other information that may enable the model to predict interference. For positioning, sensing, scheduling and resource selection, and / or reference signal design and optimization, the input may be different.

[0081] The ANN 400 includes at least one first layer 408 of artificial neurons 410 to process input data 406 and provide resulting first layer data via connections or “edges” such as edges 412 to at least a portion of at least one second layer 414. Second layer 414 processes data received via edges 412 and provides second layer output data via edges 416 to at least a portion of at least one third layer 418. Third layer 418 processes data received via edges 416 and provides third layer output data via edges 420 to at least a portion of a final layer 422, including one or more neurons to provide output data 424. All or part of output data 424 may be further processed in some manner by (optional) post-processor 426. Thus, in certain examples, ANN 400 may provide output data 428 that is based on output data 424, post-processed data output from post-processor 426, or some combination thereof. In an example where the ML model is used to classify traffic, the output may include an inference of a traffic type. In examples where the ML model is used for beam prediction, the output may include a set of resource (e.g., beam) predictions for Set-A beams. A base station or UE may then select a beam for use in transmission and / or reception based on the beam predictions for the Set-A beams output from the AI / ML model. In an ML model may be trained for CSI prediction, the output may be a predicted CSI measurement that may be used for future communication. For CSI compression, the input may be CSI to be reported, and the output may include a compressed CSI that can be signaled using reduced overhead. For CSI decompression, the input may be a compressed CSI based on a corresponding model, and the output may be a decompressed CSI with the original CSI prior to compression. For interference prediction, the output may be a prediction 129025-2652WO01Qualcomm Ref. No. 2501845 WO 27 / 84of interference for one or more resources. For positioning, the output may be a position prediction. For scheduling and resource selection, the output may be an indication of resources that will allow for more accurate communication and / or more efficient scheduling. For reference signal design and optimization, the output may identify a reference signal or one or more parameters for a reference signal for use by a UE or a network.

[0082] Post-processor 426 may be included within ANN 400 in some other implementations.Post-processor 426 may, for example, process all or a portion of output data 424, which may result in output data 428 being different, at least in part, from output data 424, as a result of data being changed, replaced, deleted, etc. In some implementations, post-processor 426 may be configured to add additional data to output data 424. In this example, second layer 414 and third layer 418 represent intermediate or hidden layers that may be arranged in a hierarchical or other like structure. Although not explicitly shown, there may be one or more further intermediate layers between the second layer 414 and the third layer 418. In some implementations, the post-processor 426 may be an ML model, such as an ANN.

[0083] The structure and training of artificial neurons 410 in the various layers may be tailored to the specific requirements of an application. Within a given layer, such as first layer 408, second layer 414, or third layer 418 of ANN 400, some or all of the neurons may be configured to process information provided to the layer and output corresponding transformed information from the layer. For example, transformed information from a layer may represent a weighted sum of the input information associated with or otherwise based on a non-linear activation function or other activation function used to “activate” the artificial neurons of the next layer. Artificial neurons in such a layer may be activated by or be responsive to parameters such as the previously described weights and biases of ANN 400. The weights and biases of ANN 400 may be adjusted during a training process or during operation of ANN 400. The weights of the various artificial neurons may control the strength of connections between layers or artificial neurons, while the biases may control the direction of connections between the layers or artificial neurons. An activation function may select or determine whether an artificial neuron transmits its output to the next layer or not in response to its received data.

[0084] Different activation functions may be used to model different types of non-linear relationships. By introducing non-linearity into an ML model, an activation function 129025-2652WO01Qualcomm Ref. No. 2501845 WO 28 / 84allows the configuration for the ML model to change in response to identifying or detecting complex patterns and relationships in the input data 406. Some non- exhaustive example activation functions include a sigmoid based activation function, a hyperbolic tangent (tanh) based activation function, a convolutional activation function, up-sampling, pooling, and a rectified linear unit (ReLU) based activation function.

[0085] Training of an ML model, such as ANN 400, may be conducted using training data.Training data may include one or more datasets that ANN 400 may use to identify patterns or relationships. Training data may represent various types of information, including written, visual, audio, environmental context, operational properties, etc. During training, the parameters (such as the weights and biases) of artificial neurons 410 may be changed, such as to minimize or otherwise reduce a loss function or a cost function. A training process may be repeated multiple times to fine-tune ANN 400 with each iteration.

[0086] Various ANN model structures are available for consideration. For example, in a feedforward ANN structure, each artificial neuron 410 in layer 414 receives information from the previous layer (such as one or more artificial neurons 410 in layer 408) and produces information for the next layer (such as one or more artificial neurons 410 in layer 418). In a convolutional ANN structure, some layers may be organized into filters that extract features from data, such as the training data or the input data. In a recurrent ANN structure, some layers may have connections that allow for the processing of data across time, such as for processing information having a temporal structure, such as time series data forecasting.

[0087] In an autoencoder ANN structure, compact representations of data may be processed and the model trained to predict or potentially reconstruct original data from a reduced set of features. An autoencoder ANN structure may be useful for tasks related to dimensionality reduction and data compression.

[0088] A generative adversarial ANN structure may include a generator ANN and a discriminator ANN that are trained to compete with each other. Generative- adversarial networks (GANs) are ANN structures that may be useful for tasks relating to generating synthetic data or improving the performance of other models.

[0089] A transformer ANN structure makes use of attention mechanisms that may enable the model to process input sequences in a parallel and efficient manner. An attention mechanism allows the model to focus on different parts of the input sequence at 129025-2652WO01Qualcomm Ref. No. 2501845 WO 29 / 84different times. Attention mechanisms may be implemented using a series of layers known as attention layers to compute weighted sums of input features based on a similarity between different elements of the input sequence. A transformer ANN structure may include a series of feedforward ANN layers whose configurations may change in response to identifying non-linear relationships between the input and output sequences, which may also be referred to as a process of “learning” by the ANN layers. The output of a transformer ANN structure may be obtained by applying a linear transformation to the output of a final attention layer. A transformer ANN structure may be of particular use for tasks that involve sequence modeling, or other like processing.

[0090] Another example type of ANN structure is a model with one or more invertible layers.Models of this type may be inverted or “unwrapped” to reveal the input data that was used to generate the output of a layer. Other example types of ANN model structures include fully connected neural networks (FCNNs) and long short-term memory (LSTM) networks.

[0091] ANN 400 or other ML models may be implemented in various types of processing circuits along with memory and applicable instructions therein. For example, general- purpose hardware circuits, such as one or more central processing units (CPUs), one or more graphics processing units (GPUs), or suitable combinations thereof, may be employed to implement a model. In some implementations, one or more tensor processing units (TPUs), neural processing units (NPUs), or other special-purpose processors, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), or the like may also be employed. In some implementations, the ML model may be implemented by an NPU or a TPU embedded in a system on chip (SoC) along with other components, such as one or more CPUs, GPUs, etc. A SoC includes several components manufactured on a shared semiconductor substrate. The NPU or TPU may be controlled by the one or more CPUs by configuring the ML model implemented by the NPU or TPU with weights and biases, providing certain training data to the ML model to configure the ML model, or providing input data to the ML model to obtain related inferences. The one or more CPUs may also receive the inferences and be configured to perform certain actions based on the inferences produced by the ML model. The actions performed by the one or more CPUs may include sending commands to other components of the SoC or components external to the SoC to perform certain actions. For example, the CPU may send commands to 129025-2652WO01Qualcomm Ref. No. 2501845 WO 30 / 84an RF transceiver based on the outputs or inferences obtained from an ML model to cause the RF transceiver to operate on a wireless network in accordance with the ML model.

[0092] In some examples, an ML model may be trained prior to, or at some point following, the operation of the ML model, such as ANN 400, on input data. When training the ML model, information in the form of applicable training data may be gathered or otherwise created for use in training an ANN accordingly. For example, training data may be gathered or otherwise created regarding information associated with received / transmitted signal strengths, interference, and resource usage data, as well as any other relevant data that might be useful for training a model to address one or more problems or issues in a communication system. In certain instances, all or part of the training data may originate in a user equipment (UE) or other device in a wireless communication system, or one or more network entities, or aggregated from multiple sources (such as a UE and a network entity / entities, one or more other UEs, the Internet, or the like). For example, wireless network architectures, such as selforganizing networks (SON) or mobile drive test (MDT) networks, may be adapted to support the collection of data for ML model applications. In another example, training data may be generated or collected online, offline, or both online and offline by a UE, network entity, or other device(s), and all or part of such training data may be transferred or shared (in real or near-real time), such as through store and forward functions or the like.

[0093] Offline training may refer to creating and using a static training dataset, such as in a batched manner, whereas online training may refer to the real-time collection and use of training data. For example, an ML model at a network device (such as a UE) may be trained or fine-tuned using online or offline training. For offline training, data collection and training can occur in an offline manner at the network side (such as at a base station or other network entity) or at the UE side. For online training, the training of a UE-side ML model may be performed locally at the UE or by a server device (such as a server hosted by a UE vendor) in a real-time or near-real-time manner based on data provided to the server device from the UE. In certain instances, all or part of the training data may be shared within a wireless communication system or even shared (or obtained from) outside of the wireless communication system.

[0094] Once an ANN has been configured by setting parameters, including weights and biases, from training data, the ANN’s performance may be evaluated. In some 129025-2652WO01Qualcomm Ref. No. 2501845 WO 31 / 84scenarios, evaluation / verification tests may use a validation dataset, which may include data not in the training data, to compare the model’s performance to baseline or other benchmark information. The ANN configuration may be further refined, for example, by changing its architecture, retraining it on the data, or using different optimization techniques, etc.

[0095] As part of a training process, parameters affecting the functioning of the artificial neurons and layers may be adjusted. For example, backpropagation techniques may be used to train an ANN by iteratively adjusting weights or biases of certain artificial neurons associated with errors between a predicted output of the model and a desired output that may be known or otherwise deemed acceptable. Backpropagation may include a forward pass, a loss function, a backward pass, and a parameter update that may be performed in training iteration. The process may be repeated for a certain number of iterations for each set of training data until the weights of the artificial neurons / layers are adequately tuned.

[0096] Backpropagation techniques associated with a loss function may measure how well a model is able to predict a desired output for a given input. An optimization algorithm may be used during a training process to adjust weights and biases to reduce or minimize the loss function, which can improve the performance of the model. There are a variety of optimization algorithms that may be used along with backpropagation techniques or other training techniques. Some initial examples include a gradient descent based optimization algorithm and a stochastic gradient descent based optimization algorithm. A stochastic gradient descent technique may be used to adjust weights / biases in order to minimize or otherwise reduce a loss function. A mini-batch gradient descent technique, which is a variant of gradient descent, may involve updating weights / biases using a small batch of training data rather than the entire dataset. A momentum technique may accelerate an optimization process by adding a momentum term to update or otherwise affect certain weights / biases.

[0097] An adaptive learning rate technique may adjust the learning rate of an optimization algorithm associated with one or more characteristics of the training data. A batch normalization technique may be used to normalize inputs to a model in order to stabilize a training process and potentially improve the performance of the model. A “dropout” technique may be used to randomly drop out some of the artificial neurons from a model during a training process, for example, in order to reduce overfitting and potentially improve the generalization of the model. An “early stopping” 129025-2652WO01Qualcomm Ref. No. 2501845 WO 32 / 84technique may be used to stop an ongoing training process early, such as when a performance of the model using a validation dataset starts to degrade.

[0098] Another example technique includes data augmentation to generate additional training data by applying transformations to all or part of the training information. A transfer learning technique may be used which involves using a pre-trained model as a starting point for training a new model, which may be useful when training data is limited or when there are multiple tasks that are related to each other. A multi-task learning technique may be used which involves training a model to perform multiple tasks simultaneously to potentially improve the performance of the model on one or more of the tasks. Hyperparameters or the like may be input and applied during a training process in certain instances.

[0099] Another example technique that may be useful with regard to an ANN is a “pruning” technique. A pruning technique, which may be performed during a training process or after a model has been trained, involves the removal of unnecessary or less necessary, or possibly redundant features from a model. In certain instances, a pruning technique may reduce the complexity of a model or improve the efficiency of a model without undermining the intended performance of the model.

[0100] Pruning techniques may be particularly useful in the context of wireless communication, where the available resources (such as power and bandwidth) may be limited. Some example pruning techniques include a weight pruning technique, a neuron pruning technique, a layer pruning technique, a structural pruning technique, and a dynamic pruning technique. Pruning techniques may, for example, reduce the amount of data corresponding to a model that is transmitted or stored. Weight pruning techniques may involve removing some of the weights from a model. Neuron pruning techniques may involve removing some neurons from a model. Layer pruning techniques may involve removing some layers from a model. Structural pruning techniques may involve removing some connections between neurons in a model. Dynamic pruning techniques may involve adapting a pruning strategy of a model associated with one or more characteristics of the data or the environment. For example, in certain wireless communication devices, a dynamic pruning technique may more aggressively prune a model for use in a low-power or low-bandwidth environment and less aggressively prune the model for use in a high-power or high- bandwidth environment. In certain example implementations, pruning techniques may also be applied to training data, for example, to remove outliers. In some 129025-2652WO01Qualcomm Ref. No. 2501845 WO 33 / 84implementations, pre-processing techniques directed to all or part of a training dataset may improve model performance or promote faster convergence of a model. For example, training data may be pre-processed to change or remove unnecessary data, extraneous data, incorrect data, or otherwise identifiable data. Such pre-processed training data may, for example, lead to a reduction in potential overfitting or otherwise improve the performance of the trained model.

[0101] One or more of the example training techniques presented above may be employed as part of a training process. Some example training processes that may be used to train an ANN include supervised learning, unsupervised learning, semi-supervised learning, and reinforcement learning techniques. With supervised learning, a model is trained on a labeled training dataset, where the input data is accompanied by a correct or otherwise acceptable output. With unsupervised learning, a model is trained on an unlabeled training dataset, such that the model will learn to identify patterns and relationships in the data without the explicit guidance of a labeled training dataset. With semi-supervised learning, a model is trained using some combination of supervised and unsupervised learning processes, for example, when the amount of labeled data is somewhat limited. With reinforcement learning, a model may learn from interactions with its operation / environment, such as in the form of feedback akin to rewards or penalties. Reinforcement learning may be particularly beneficial when used to improve or attempt to optimize the behavior of a model deployed in a dynamically changing environment, such as a wireless communication network.

[0102] Distributed, shared, or collaborative learning techniques may be used for the training process. For example, techniques such as federated learning may be used to decentralize the training process and rely on multiple devices, network entities, or organizations for training various versions or copies of an ML model without relying on a centralized training mechanism. Federated learning may be particularly useful in scenarios where data is sensitive or subject to privacy constraints, or where it is impractical, inefficient, or expensive to centralize data. In the context of wireless communication, for example, federated learning may be used to improve performance by allowing an ANN to be trained on data collected from a wide range of devices and environments. For example, an ANN may be trained on data collected from a large number of wireless devices in a network, such as distributed wireless communication nodes, smartphones, or internet-of-things (loT) devices, to improve the network's performance and efficiency. With federated learning, a user equipment (UE) or other 129025-2652WO01Qualcomm Ref. No. 2501845 WO 34 / 84device may receive a copy of all or part of a global or shared model and perform local training on the local model using locally available training data. The UE may provide updated information regarding the locally trained model to one or more other devices (such as a network entity or a server), where the updates from other-like devices (such as other UEs) may be aggregated and used to provide an update to the global or shared model. A federated learning process may be repeated iteratively until all or part of a model obtains a satisfactory level of performance. Federated learning may enable devices to protect the privacy and security of local data, while supporting collaboration regarding training and updating of all or part of a shared model.

[0103] In some implementations, one or more devices or services may support processes relating to an ML model’s usage, maintenance, activation, reporting, or the like. In certain instances, all or part of a dataset or model may be shared across multiple devices to provide or otherwise augment or improve processing. In some examples, signaling mechanisms may be utilized at various nodes of wireless networks to signal the capabilities for performing specific functions related to ML models, support for specific ML models, capabilities for gathering, creating, and transmitting training data, or other ML related capabilities. ML models in wireless communication systems may, for example, be employed to support decisions or improve performance relating to wireless resource allocation or selection, wireless channel condition estimation, interference mitigation, beam management, positioning accuracy, energy savings, or modulation or coding schemes, etc. In some implementations, model deployment may occur jointly or separately at various network levels, such as a UE, a network entity such as a base station, or a disaggregated network entity such as a central unit (CU), a distributed unit (DU), a radio unit (RU), or the like.

[0104] FIG. 5 is an illustrative block diagram of an example ML architecture 500 that may be used for wireless communications in any of the various implementations, processes, environments, networks, or use cases listed above. As illustrated, architecture 500 includes multiple logical entities, such as model training host 502, model inference host 504, data source(s) 506, and agent 508. Model inference host 504 is configured to run an ML model based on inference data 512 provided by data source(s) 506. Model inference host 504 may produce output 514, which may include a prediction or inference, such as a discrete or continuous value based on inference data 512, which may then be provided as input to the agent 508.129025-2652WO01Qualcomm Ref. No. 2501845 WO 35 / 84

[0105] Agent 508 may represent an element or an entity of a wireless communication system including, for example, a radio access network (RAN), a wireless local area network, a device-to-device (D2D) communications system, etc. As an example, agent 508 may be a user equipment (such as UE 104, referring to FIG. 1, for example), a base station (such as base station 102, referring to FIG. 1, for example), or a disaggregated network entity (such as a CU 110, DU 130, or RU 140 in FIG. 1), an access point, a wireless station, a RAN intelligent controller (RIC) in a cloud-based RAN, among some examples. Additionally, agent 508 may also be a type of agent that depends on the type of tasks performed by model inference host 504, the type of inference data 512 provided to model inference host 504, or the type of output 514 produced by model inference host 504.

[0106] Agent 508 may perform one or more actions associated with receiving output 514 from model inference host 504, e.g., selection, use, and / or reporting regarding the inferences made for the different set of resources (e.g., traffic classification). Agent 508 may indicate the one or more actions performed to at least one subject of action 510. In some cases, agent 508 and the subject of action 510 are the same entity.

[0107] Data can be collected from data sources 506, and may be used as training data 516 for training an ML model, or as inference data 512 for feeding an ML model inference operation. Data sources 506 may collect data from various subject of action 510 entities (such as the UE or the network entity) and provide the collected data to a model training host 502 for ML model training. In some examples, if output 514 provided to agent 508 is inaccurate (or the accuracy is below an accuracy threshold), model training host 502 may provide feedback to model inference host 504 to modify or retrain the ML model used by model inference host 504, such as via an ML model deployment update.

[0108] Model training host 502 may be deployed at the same or a different entity than that in which model inference host 504 is deployed. For example, in order to offload model training processing, which can impact the performance of model inference host 504, model training host 502 may be deployed at a model server.

[0109] As computational models, including AI / ML models or functionalities (e.g., the AI / ML model including any of the aspects described in connection with the ANN 400 or the ML architecture 500) are increasingly utilized for various tasks in wireless communication, a UE may have multiple models (e.g., AI / ML models) trained for a variety of different tasks and use cases, such as traffic classification, interference 129025-2652WO01Qualcomm Ref. No. 2501845 WO 36 / 84prediction, beam prediction, CSI prediction, CSI compression, and / or positioning. However, UEs are constrained by limited computational, memory, and power resources, which are shared among these models (e.g., AI / ML models). As a result, UEs may not be able to operate all requested models or functionalities simultaneously. Example aspects presented herein provide methods and apparatus to configure UEs for scenarios where multiple tasks (e.g., AI / ML tasks) are scheduled to be performed despite the limitations in memory, compute, and other resources.

[0110] AI / ML models (e.g., the AI / ML model including any of the aspects described in connection with the ANN 400 or the ML architecture 500) can be adapted for use in various wireless communication scenarios due to their ability to provide significant performance enhancements. These models can leverage vast amounts of historical data to improve performance compared to various baselines. For example, AI / ML models can handle the high-dimensional features inherent in wireless environments, such as signal strength, beamforming patterns, and interference levels. Additionally, AI / ML models can capture the nonlinearities and dynamic conditions of wireless networks that analytical models often fail to comprehend. This capability leads to improved predictions of network behavior and more efficient allocation of radio resources.

[0111] AI / ML models can provide remarkable success in numerous wireless use cases. These include traffic classification, CSI prediction and compression, interference prediction, beam prediction, positioning and sensing, scheduling and resource selection, and reference signal design and optimization, among others. For example, the use cases of AI / ML models (e.g., the AI / ML model including any of the aspects described in connection with the ANN 400 or the ML architecture 500) may include enhancements in traffic management (e.g., with improved traffic classification), CSI feedback, beam management, and / or positioning accuracy. For CSI feedback enhancement, this may involve spatial-frequency domain CSI compression using AI / ML models deployed on both sides of the communication link, and time-domain CSI prediction utilizing models on the UE side. For beam management, use cases of AI / ML models may include spatial-domain downlink beam prediction for a first set of beams (e.g., Set A) based on measurement results from a second set of beams (e.g., Set B), and temporal downlink beam prediction for Set A beams based on the historical measurement results of Set B beams. For positioning accuracy enhancement, use cases of AI / ML129025-2652WO01Qualcomm Ref. No. 2501845 WO 37 / 84models include direct AI / ML-based positioning and AI / ML-assisted positioning, as an example.

[0112] The adoption of AI / ML models (e.g., the AI / ML model including any of the aspects described in connection with the ANN 400 or the ML architecture 500) may use AI / ML model terminology and descriptions to identify common and specific characteristics for framework investigation. This includes characterizing the defining stages of AI / ML-related algorithms and associated complexities, identifying various levels of collaboration between the UE and network relevant to the selected use cases, and characterizing the lifecycle management of AI / ML models, among others.

[0113] In wireless communication, AI / ML training may be decentralized to enhance data privacy and model accuracy. Various approaches may be used to implement decentralized AI / ML training. In some aspects, federated learning (FL) or federated training, which is a machine learning technique that trains an AI / ML model across multiple decentralized edge nodes, such as different UEs and base stations (e.g., one or more components of gNBs). Each edge node may perform local model training using local data samples. The federated learning or federated training techniques may perform multiple model exchange interactions without the exchange of local data samples. In some aspects, AI / ML model transfer may be used, which involves the delivery of an AI / ML model via an over-the-air interface. An AI / ML model transfer may involve transferring parameters of a model structure that is already known at the receiving end or delivering a new model with its parameters. The delivery may include either a full model and / or a partial model. Example aspects presented herein provide methods for apparatus to enable physical layer processing to enable efficient federated AI / ML learning. Some example aspects provide an error detection mechanism for the over-the-air aggregation of federated training model parameters. Such mechanisms help to improve the reliability of data transmission and aggregation processes, thereby improving the accuracy and robustness of the resulting models.

[0114] In some examples, the distributed edge machine learning federated learning process involves several steps. FIG. 6 is a diagram 600 illustrating an example of federated Al training. As shown in FIG. 6, initially, the same AI / ML model, such as AI / ML model 640, including identical initial AI / ML model parameters, may be initialized on each of the UEs (e.g., UE 612, 614, 616) and at the base station (e.g., base station 604). In some aspects, the model may be associated with wireless communication, one or more aspects of operation of a UE and / or one or more aspects of operation of 129025-2652WO01Qualcomm Ref. No. 2501845 WO 38 / 84a network node, for example. Each UE (e.g., UE 612, 614, 616) then may use its own dataset along with the initial AI / ML model parameters to compute updated model parameters, such as an updated gradients vector. Then, the base station (e.g., base station 604) and the UEs (e.g., UE 612, 614, 616) may communicate to determine appropriate communication parameters that are suitable for the current network or channel conditions (e.g., based on gradient statistics, such as the maximum absolute value or variance of all gradients computed by each UE, or channel statistics, such as the additive white Gaussian noise (AWGN) variance). The base station (e.g., base station 604) may receive the relevant inputs from all UEs (e.g., UE 612, 614, 616) and determine a common set of communication parameters to be used across all UEs (e.g., UE 612, 614, 616).

[0115] Once the communication parameters have been decided, the base station (e.g., base station 604) may inform the UEs (e.g., UE 612, 614, 616) of the selected parameters, which may include values such as scaling factors, dithering seeds, and / or coding rates for processing the model parameters at the UEs. Using these communication parameters, each UE then may process its model parameters (e.g., gradient vectors), and each UE (e.g., UE 612, 614, 616) may transmit the resulting data to the base station (e.g., base station 604) for example, via 632, 634, 636, respectively.

[0116] The base station (e.g., base station 604) may receive the OTA summation of all UE transmissions. Using a quantization technique (e.g., lattice-based quantization techniques), the base station (e.g., base station 604) may remove some of the added noise and obtain a cleaned summation of the model parameters (e.g., gradient vectors). Based on this cleaned OTA summation, the base station (e.g., base station 604) may computes updated model parameters and broadcasts them back to the UEs (e.g., UE 612, 614, 616) for example, via 642, 644, 646, respectively. Each UE (e.g., UE 612, 614, 616) then may update its local AI / ML model parameters accordingly, ensuring each of UEs maintain identical model parameters (e.g., model parameters that are common among the UEs). In some examples, this process may be repeated, with each UE recalculating its model parameters (e.g., gradient vectors) based on the updated model parameters, and providing information to the network and continuing the process until the base station (e.g., base station 604) determines that the learning process can be terminated (e.g., the convergence is achieved). Although the example is illustrated for a base station that is a central node for the federated learning, in other129025-2652WO01Qualcomm Ref. No. 2501845 WO 39 / 84aspects, another network node may determine the updated model parameters and send them to the UEs, e.g., via a base station.

[0117] In some examples, physical layer techniques may be used to enable efficient usage of resources by OTA summation. For example, analog signals may be used to represent the model parameters or model weights. The base station receive antenna may receive the sum of these signals from the UEs and, as a result, the reception may inherently achieve an OTA aggregation in the form of summation or averaging. In some examples, pre-equalization may be used to prevent the model from being scaled by the channel response.

[0118] In some examples, federated Al training may take advantage of OTA aggregation to reduce communication overhead and improve the spectrum efficiency. FIG. 7 is a diagram 700 illustrating an example of OTA aggregation for federated Al training. As shown in FIG. 7, in an OTA aggregation, each UE (e.g., UE 702, 704) may send the gradient of the model weights, which may be referred to as a “gradient” in some aspects, (e.g.,to the network’s parameter server (e.g., 710), which may aggregate these gradients using a function such as summation to obtain an aggregated result (e.g., Yk) according to:where 0 is the transmit gradient of the kthparameter of the interest for the jthUE participating in the aggregation process (e.g., out of a total of M UE). As used herein, a “gradient” refers to the difference between an updated weight and its corresponding previous weight in a model, and a “gradient vector” includes a set of gradients, each representing the difference of one weight from a set of weights in the model.

[0119] As wireless signals combine over the uplink, it can be advantageous for each user (e.g., UE 702, 704) to transmit the gradient of each parameter simultaneously on the uplink. In some examples, this may result in the summation of the gradients being received at the base station. To ensure that the gradients (e.g.,are correctly combined at the base station, several factors, such as power control, fading compensation, and phase correction may be applied by the base station.

[0120] In some examples, as shown in FIG. 7, in a federated learning system that includes AT UEs (e.g., UE 702 through 704), each UE (e.g., UE 702, 704) may have K data values to send to the base station. These values may represent the source model parameters, such as weights or gradients, and may or may not undergo additional processing like129025-2652WO01Qualcomm Ref. No. 2501845 WO 40 / 84scaling and quantization. In the OTA aggregation, the base station may receive the OTA summation of the UE’s corresponding data values.

[0121] In some examples, errors may occur during reception, resulting in an incorrect estimated value of this summation of the data values. Such errors may degrade system performance, slow down convergence to the actual value of the summation or average of these data values, and in some cases may even lead to non-convergence or convergence to incorrect values. In some examples, the training process may need to be reproducible, so that the results can be retraced or debugged. Therefore, detecting and mitigating errors might be necessary, even if their impact on performance appears negligible. Example aspects presented herein provide methods and apparatus to enable the base station to detect errors in the summation of the data values so that it can mitigate their effect on the overall system performance, and the reliability and reproducibility of the training process.

[0122] In some aspects, to enable the base station to detect errors in the summation of the data values from the UEs, each UE may compute extra error detection values using its own data values and an error detection matrix. Each UE may send these extra error detection values alongside its data values, either over the same channel as the data values or over a different channel. The base station receives the OTA summation of the error detection values and uses them to verify the correctness of the OTA summation of the data values it has detected.

[0123] In some examples, more than one error detection scheme may be implemented. As an example, a first error detection scheme may be based on the detection of an increased distortion of the OTA summation of analog values. In this scheme, the base station may receive the OTA summation of data values, which may be corrupted by noise. This added noise may cause distortion in the estimated values.

[0124] The base station may use the OTA summation of the error detection values to estimate whether the distortion of the OTA summation of the data values is within an acceptable limit, thereby ensuring that system performance is not degraded. In this example of a first error detection scheme, rather than a comparison to exact values, a quantitative measure, such as mean squared error (MSE), may be used to evaluate the distortion in the estimation.

[0125] In an example error detection scheme based on the detection of increased distortion of the OTA summation of federated learning parameters in accordance with various aspects of the present disclosure, multiple UEs (e.g., AT UEs, such as UE 612, 614, 129025-2652WO01Qualcomm Ref. No. 2501845 WO 41 / 84616) may participate in the federated learning process. Each UE may have K data values to be sent to the base station (e.g., base station 604). These K values sent by the jthUE (j ranging from 0 to M-l) may be denoted as:It may be assumed that the UEs use pre-equalization to avoid the scaling of each UE’ s data values by its channel response.

[0126] On the receiver’s side, the base station (e.g., base station 604) may receive the OTA summation of the A / UE’s transmissions with added noise as:ri = Sjl’o1 xj +z(3) where z is a K-element noise vector, whose elements may represent additive white Gaussian noise (AWGN) or distortions due to inaccurate pre-equalization.

[0127] From these received values (e.g., n), the base station may generate u, which is the estimation of the summation of all the UEs’ transmissions u = distortion in this estimation is given by:D = i ||(u - u)||2K

[0128] In some examples, due to a temporary increase in noise levels or inaccurate preequalization (e.g., those due to channel changes or mobility), the distortion (e.g., D in Equation (4)) may become too large, and the base station, upon identifying such scenarios, may take corrective measures. For example, the corrective measures may include requesting a retransmission or initiating a process to update the preequalization coefficients.

[0129] In some aspects, to enable the detection of a large (or increased) distortion, each UE may use a real-valued redundancy matrix c / Z, which may have dimensions of C rows and K columns (e.g., C may be much smaller than K) to calculate C error detection values:Cj = JlXj E Ukc(5)

[0130] Each UE will transmit its C error detection values (e.g., cj in Equation (5)) alongside its K data values (e.g., xj). As for the data values (e.g., xj), pre-equalization may be used to avoid scaling of each user’s error detection values by its channel response.

[0131] In some aspects, on the receiver’s side, the base station (e.g., base station 604) may receive the OTA summation of both the data values (e.g., x?) and the error detection values (e.g., ). For example, for the data values, the received signal may be: T = 2 / Xj + z, and for the error detection values (e.g., ), the received signal may be:129025-2652WO01Qualcomm Ref. No. 2501845 WO 42 / 84r2= ljCj + z' (6) where z’ is a noise vector with C elements. These noise vectors may represent AWGN or distortions resulting from inaccurate pre-equalization.

[0132] In some examples, for error checking (e.g., the increased distortion), the base station may calculate the error detection values based on the OTA summation of the received data values, using the same redundancy matrix c / Z used by the UEs. For example, the calculated error detection values may be:

[0133] The base station may compare the calculated error detection values (e.g., Cheeky to the summation of the received error detection values that were calculated and sent by each UE. For example, the summation of the received error detection values may be:

[0134] In some aspects, the base station (e.g., base station 604) may compute the Euclidean distance between the calculated error detection values (e.g., Checks in Equation (7)) and the received error detection values (e.g., Checks in Equation (8)), and compares it to a predefined threshold (e.g., a distance threshold). For example, the Euclidean distance between the calculated error detection values and the received error detection values may be expressed as:

[0135] With a properly designed redundancy matrix c / Z, an increased level of noise z may result in increased value of ||c / Zz — z'||, allowing the base station to detect the increased distortion and take appropriate corrective measures when necessary (e.g., when ||cZZz — z'|| exceeds the distance threshold). For example, the corrective measures may include requesting a retransmission or initiating an update of the preequalization coefficients.

[0136] In some aspects, the base station may examine the magnitude of each of the C elements in the vector Checks - Checks and compare them individually to a threshold. Since each element results from a linear combination of different elements in z (with z multiplied by a corresponding row of the redundancy matrix c / Z), this approach enables the base station to identify which of the K parameters are likely affected by an increased noise level. This selective identification allows the base station to request a retransmission of the affected parameters, rather than resending all K parameters.129025-2652WO01Qualcomm Ref. No. 2501845 WO 43 / 84

[0137] In some examples, to enable the detection of increased distortion of the OTA summation of federated learning parameters, communication information related to the detection may be exchanged between the base station (e.g., base station 604) and the UEs (e.g., UE 612, 614, 616). For example, the base station may signal various parameters to the UEs. For example, the parameters may include the number A of data values that are used to calculate the error detection values (e.g., Cheeky the number C of received error detection values. In some examples, the parameters may include the values of the redundancy matrix c / Z, which consists of real values. In some examples, the parameters may include the threshold used for comparison between calculated and received error detection values. For example, the threshold may include the distance threshold used to be compared with the Euclidean distance between the calculated error detection values and the received error detection values (e.g., ||Checkrx— Checktx|| ), or the threshold used to be compared with the individual elements of the vector Checkrx— Checktx.

[0138] Example aspects provide a second error detection scheme based on lattice-based transmissions. In this scheme, lattices may be used for the quantization and error correction of the OTA summation of data values. The extra error detection values may also be sent using a lattice structure. The base station then may use the OTA summation of these error detection values to determine whether the OTA summation of the data values was decoded correctly. This scheme may ensure reliable and reproducible training process results, similar to cyclic redundancy check (CRC) for payload error detection.

[0139] A lattice A of dimension K is a subgroup ofthat is closed under reflection and real addition. The lattice A may be spanned by a generating matrix c / Z G IRx, composed of real -valued elements, multiplied by a vector b of integer-valued elements. That is:A = {p = c / Zb|b G 1K} (10) lattice point, and the summation of lattice points:=also a lattice point Zi btG Z ).

[0140] Given a lattice A, such as the lattice shown in FIG. 8A or FIG. 8B for K=2 or higher dimension Lattice (K>2), the nearest neighbor lattice quantizer QAfor the lattice A may find the lattice point p that is closest to a given point x G H€, defined as:129025-2652WO01Qualcomm Ref. No. 2501845 WO 44 / 84

[0141] In some examples, a modulo lattice operation may be defined as an operator that finds the quantization error, defined as:x mod A= x — QA( ) (12)

[0142] The Voronoi region of a lattice point p e A is the set of all pointsthat are quantized to p. The basic Voronoi region v of the lattice A is the set of points that are mapped to the zero lattice point p = 0. The n-dimensional volume of the basic Voronoi region A is equal to:VOL(vA) = |det (G)| (13) where G is the generating matrix of the lattice.

[0143] FIG. 8A is a diagram 800 illustrating an example of a two-dimensional cartesian lattice. In FIG. 8A, the lattice points (e.g., 802, 804, 806) form a cartesian lattice. The cartesian lattice has been normalized to a basic Voronoi region of f(vA) = 1. FIG.8A shows a Z2 lattice, which is the Cartesian 2D lattice with generating matrix GZ2= (oadiagram 850 illustrating an example of a two-dimensionalhexagonal lattice. In FIG. 8B, the lattice points (e.g., 852, 854, 856) form a hexagonal lattice. The hexagonal lattice has been normalized to a basic Voronoi region of U(vA) = 1 FIG. 8B shows an A2 lattice, which is the hexagonal 2D lattice with a non-normalized generating matrix GA2. FIG. 8A and FIG. 8B showexamples of two-dimensional lattices for illustrative purposes. In some examples, the lattice-based quantization techniques in some aspects of this disclosure may use a lattice with a dimension that is greater than 2 (e.g., K»2).

[0144] FIG. 9 shows diagrams illustrating an example of using a lattice for quantization and coding of federated learning in accordance with various aspects of the present disclosure. As shown in FIG. 9, assuming there are AT UEs (e.g., UE 952, 954, 956) participating in the federated learning process, each UE, indexed by j (where j = 0 to M-l), may send K gradients to the base station (e.g., at 960). The T-element vector of these gradient values is denoted aswhere 0 is the transmit gradient of the kthparameter of the interest for the jthUE (e.g., out of a total of AT UE).

[0145] As shown in diagram 900, each UE may first scale (e.g., at 910) its vector 6j by a scaling value P so that the transmission adheres to a given power constraint, such that 129025-2652WO01Qualcomm Ref. No. 2501845 WO 45 / 84The scaling factor P may be common to all UEs (e.g., UE 952, 954, 956) and known at the base station (e.g., at 960).

[0146] The UE then may use a lattice A to quantize the scaled value (e.g., at 930) to the nearest lattice point (e.g., QA(’))- Before quantization, each UE may add (e.g., at 920) a dithering vector dj to the scaled vector [36 j. This dithering vector dj may be draw uniformly over the basic Voronoi region of the lattice A, such that dj G vA. The dithering process (e.g., at 920) ensures that the quantization error is uniformly distributed over the Voronoi region of the lattice A and independent of 0y, thereby preventing bias in the quantized values. These dithering vectors (e.g., dj) may also be known at the base station to avoid introducing additional uncertainty. One approach to share the dithering vectors is to use a common seed, shared between each UE and the base station, to generate the same sequence of dithering values at both entities.

[0147] In some examples, the lattice A used for quantization is a scaled version of a basic lattice Af. For example, / 1 / can be a lattice that is normalized such that the volume of its basic Voronoi region satisfies 1 The scaled lattice is defined as:A= a / \f (16)

[0148] where the scaling factor a may be determined based on the lattice’ s normalized second moment (NSM) and the variance (e.g., a ) of the channel noise (e.g., z).

[0149] In some examples, as shown in diagram 900 in FIG. 9, each UE (e.g., UE 952, 954,956) may send the quantized value Xj = Q dfi6j + dj), where QA( ) is the lattice quantizer, [30 j is the scaled gradient vector, and dj is the dithering vector. The quantization error incurred in this process is qj

[0150] As shown in Fig 9, on the receiving side, the base station (e.g., at 960) may receive the OTA summation of the M UE’s (e.g., UE 952, 954, 956) transmissions after channel response and additive noise. As shown in diagram 950, the received signal is expressed as:where z G Uk is a noise vector with K independent and identically distributed (IID) elements with variance. Since a lattice is closed under real addition, the summation of the lattice points from all UEs (e.g., SyL^Xy in Equation (17)) is itself a lattice point.129025-2652WO01Qualcomm Ref. No. 2501845 WO 46 / 84

[0151] Provided that the added noise z lies within the basic Voronoi region z G vAof the lattice (i.e., the noise does not cause the received signal to exit the Voronoi region of the correct lattice point), the receiver may accurately recover the sum of the lattice points using the lattice quantizer, such that QA(r)Xy, effectively eliminating the effect of the added noise z.

[0152] In some examples, the base station (e.g., at 960) may use the output of the lattice quantizer to estimate the summation of the UEs’ gradients, denoted as u, where the true summation is:

[0153] The distortion in the base station’s estimation (u) is defined as:where ukand ukare the k-th elements of the vectors u and u, respectively.

[0154] In some aspects, in systems where additional channel uses are available (i.e., N > K), these extra channel uses may be utilized to reduce the distortion (e.g., Z>) in the base station’s estimation of the OTA summation of the UEs’ gradients. In some examples, the additional channel uses (e.g., K additional channel used) may be used by each UE to transmit, for example, the quantization error (e.g., qj) it introduced during the lattice quantization of xj. For example, the transmission of the quantization errors (e.g., qj) may be based on a lattice-based quantization and coding scheme similar to that used for transmitting the original gradients 0y. On the receiver side (e.g., the base station), the same lattice quantizer used for xj may be used to estimate the summation of all UEs’ quantization errors: E / I 0 / ■> thereby reducing the total distortion. For simplicity, the description assumes that the ratio N / K is an integer, although the approach can be adapted for non-integer cases as well.

[0155] In some aspects, the error detection for OTA aggregation at the base station may be based on lattice-based transmissions. In some examples, a latticeof K dimensions, with a generating matrix K G Ukxfor transmitting the model gradients or other values for error correction or distortion reduction, may be used. After the quantization to the lattice, each transmitted data vector from a UE may be represented as:Xj = Krtj (20) where riy Gis a vector of K integer elements.129025-2652WO01Qualcomm Ref. No. 2501845 WO 47 / 84

[0156] Assuming pre-equalization is applied, the base station may receive the aggregated signal T =+ z, where z is a K-dimensional noise vector. Since each xj is formed as Xj = Knj, the summation S; = Xj^nj = '' jnj is a summation of lattice points and therefore is also a lattice point (e.g., 2 / xj GA%).

[0157] The base station may estimate 2 / Xj by applying lattice quantization, which involves finding the nearest point on the lattice A%to the received vector n. If the noise vector z is sufficiently small, the nearest lattice point may remainXj, effectively eliminating the noise.

[0158] On the other hand, if the noise level is too high, a decoding error may occur, which may degrade the system’s performance, and the base station may be able to detect such an event and take corrective action, such as requesting a retransmission.

[0159] To facilitate error detection at the receiver (e.g., base station), each UE may compute error detection values. For example, each UE may use an integer-valued redundancy matrix c / Z of dimensions of C rows and K columns (e.g., C may be smaller than K) to calculate C integer error detection values:rrtj = Jlrtj E lc(21)

[0160] Each UE then may encode this integer vector (the integer vector including the C integer error detection values) into a second lattice Acof C dimensions using a generating matrix:e e Dkcxc(22) and send:

[0161] In some examples, each UE may transmit its error correction values (e.g., ) alongside its K data values (e.g., xj).

[0162] In some examples, a pre-equalization processed may be applied on the data to avoid the scaling of each user’s error detection values by its channel response. On the receiver’s side, the base station may receive the OTA summation of both the data values (e.g., T+ z) and the error detection values (e.g., r2= S; Q +z’, where z’ is a noise vector with C elements). Since the error detection values cj are defined aswhich are lattice points, the summationitself a lattice point (e.g., 2 / cj GAC).

[0163] In some aspects, the base station may perform lattice-based quantization to quantize ri to lattice A%and to lattice Ac. From these quantized values, the base station may 129025-2652WO01Qualcomm Ref. No. 2501845 WO 48 / 84extract integer vector estimations for ^jnj and j-mj. For example, the estimates may be expressed as:QAcare the lattice quantizers for lattices A%and Ac, respectively.

[0164] For the purpose of error detection, the base station may calculate the error detection integer values based on the OTA summation of the received data values using the same redundancy matrix c / Z, resulting in:Checkrx= lZ' j nj (24)

[0165] The base station may compare Checks with the estimated summation of the received error detection integer values that were calculated and sent by the UEs, expressed as:

[0166] If the noise terms z and z’ are sufficiently small, the nearest lattice points to n and n are S7%7and 2 / <7, respectively, and the noise may be effectively eliminated. In this case, the base station may have: Checktx== 'Zj lnj = l 'Zjnj, and Checkrx== Jl ^7n7. Hence, Checks = Checks, indicating no error.

[0167] However, if the noise levels are too high, it is likely that Checks will not equal Checks. This discrepancy will be detected by the base station, and the base station may take appropriate corrective actions, such as requesting a retransmission of all the K data values.

[0168] In some aspects, during the calculation of integer error detection values, both the UEs and the base station may use modulo P summation during relevant operations such as matrix multiplication and received error detection integer values estimation, where P is a prime number. This approach may avoid the growth in the power needed to transmit the error detection values: c7= Crrtj = C lnj. For example, each element in mj may be the summation of multiple elements in nj, which may result in large values. Hence, the resulting lattice point Crrij may have a high power.

[0169] Using modulo P summation operations may limit the growth in power, while still preserving the propertys a result, when the base station calculates the error detection values based on the OTA summation of the data values, the result may still match the modulo P summation of the error detection values calculated and sent by each UE when no error has occurred.

[0170] In some examples, for each UE, the integer error detection values may be computed as:129025-2652WO01Qualcomm Ref. No. 2501845 WO 49 / 84m.j = modp{< A} (26)

[0171] For the base station, the error detection values may be calculated as:Checkrx= modp{< AIJnJ} (27) andChecktx= modp{27m7] (28)

[0172] In some examples, to enable the error detection for OTA aggregation based on latticebased transmission, communication information related to the detection may be exchanged between the base station (e.g., 960) and the UEs (e.g., UE 952, 954, 956). For example, the base station may signal various parameters to the UEs. For example, the parameters may include the lattice generation matrices, % and C. In some examples, these lattices may be scaled according to the channel noise, and this scaling may be updated whenever the channel conditions change, such as in response to an increase or decrease in the signal-to-noise ratio (SNR). In some examples, the parameters may include the prime number P. In some examples, the parameters may include the number K of data values used to calculate the error detection values, and the number C of error detection values. In some examples, the parameters may include the values of the redundancy matrix c / Z, which may be integer values.

[0173] FIG. 10 is a call flow diagram 1000 illustrating a method of wireless communication in accordance with various aspects of this present disclosure. Various aspects are described in connection with a first UE 1002 and a base station 1004. The aspects may be performed by the first UE 1002 or the base station 1004 in aggregation and / or by one or more components of a base station 1004 (e.g., a CU 110, a DU 130, and / or an RU 140). In some examples, the first UE 1002 and the second UE 1006 may include or be associated with an AI / ML model 1040. For example, the AI / ML model 1040 may include any of the aspects described in connection with the ANN 400 or the ML architecture 500.

[0174] As shown in FIG. 10, at 1008, the same AI / ML model, such as AI / ML model 1040, which may include identical initial ML model parameters (e.g., that are common to the UEs and the base station), may be initialized on the first UE 1002, the second UE 1006 and base station 1004. The aspects that are described as performed by the base station may be performed by one or more components of a disaggregated base station or by one or more components of a base station in aggregation. A base station or one129025-2652WO01Qualcomm Ref. No. 2501845 WO 50 / 84or more components of a base station, is an example of a network node or network entity that may be involved in federated learning, as described herein.

[0175] At 1010, base station 1004 may transmit to the first UE 1002 error detection parameters. In some examples, base station 1004 may transmit to the second UE 1006 error detection parameters at 1010. In some examples, the error detection parameters may include one or more of: a first number of rows for the redundancy matrix, a second number of columns for the redundancy matrix, the elements of the redundancy matrix, the prime number for a modulo P summation operation, a first latticegenerating matrix associated with the computed error detection integer values, or a second lattice-generating matrix associated with the estimated summation. In some examples, the error detection parameters may include one or more of the first number of analog values, the second number of error detection values, the elements of the redundancy matrix, or threshold information including at least one of a first distance threshold associated with a Euclidean distance between the computed error detection values and the second OTA summation of received error detection values received from the first UE 1002 and the second UE 1006 or the second distance threshold.

[0176] At 1012, each of the first UE 1002 and the second UE 1006 may obtain the communication information. For each of the first UE 1002 and the second UE 1006, the communication information may include: one or more data values associated with communication between the UE and the network entity, and one or more error detection values associated with the one or more data values. For example, each of the first UE 1002 and the second UE 1006 may train the AI / ML model 1040 to obtain the one or more data values. In some examples, the one or more data values may be the weights (e.g., x?) of the AI / ML model 1040 each UE obtained. In some examples, the one or more data values may be the gradient vector (e.g., 0,) of the AI / ML model 1040 each UE obtained. The gradient vector may include a set of gradients representing the differences between the updated weights and the previous weights for the AI / ML model 1040. In some examples, each of the first UE 1002 and the second UE 1006 may use a redundancy matrix (e.g., c / Z) to calculate the error detection values (e.g., ) based on the data values (e.g., CjIn some examples, the one or more data values may be represented as analog values. In some examples, the one or more data values may be represented as integer values associated with a first set of lattice points.129025-2652WO01Qualcomm Ref. No. 2501845 WO 51 / 84

[0177] At 1014, the base station 1004 may receive, from the first UE 1002, the second UE 1006, or both, communication information. For example, for each of the first UE 1002 and the second UE 1006, the communication information may include: one or more data values 1050 associated with communication between the UE and the network entity, and one or more error detection values 1052 associated with the one or more data values. The one or more data values 1050 may be represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values 1052 may be represented as analog values or integer values associated with a second set of lattice points.

[0178] The base station 1004 may use one of two error detection schemes to detect errors in the OTA summation of the data values received from the first UE 1002 and the second UE 1006 (e.g., at 1014). The first error detection scheme detects errors by identifying increased distortion in the OTA summation of analog values, corresponding to steps 1016 through 1020. The second error detection scheme relies on lattice-based transmissions for error detection, corresponding to steps 1022 through 1026.

[0179] Using the first error detection scheme, at 1016, the base station 1004 may determine, using the redundancy matrix (e.g., c / Z), computed error detection values (e.g., Checks in Equation (7)) based on the first OTA summation of the analog values received from the first UE 1002 and the second UE 1006 (e.g., received at 1014), as shown in Equation (7):The redundancy matrix the base station 1004 used may be the same as the redundancy matrix the first UE 1002 and the second UE 1006 used to obtain the one or more error detection values based on the data values.

[0180] At 1018, the base station 1004 may compare the computed error detection values (e.g.,Checkrxin Equation (7)) with the second OTA summation (e.g., Checks in Equation (8)) of the error detection values received from the first UE 1002 and the second UE 1006 to obtain a comparison result (e.g., received at 1014).

[0181] At 1020, the base station 1004 may identify, based on the comparison result (e.g.,|| Checkrx— Checktx|| in Equation (9)), an increase on a distortion on the data values. In some examples, the comparison result may include a Euclidean distance between the computed error detection values and the second OTA summation of the error detection values received from the first UE 1002 and the second UE 1006, and the base station 1004 may determine, in response to the Euclidean distance that is greater129025-2652WO01Qualcomm Ref. No. 2501845 WO 52 / 84than a first distance threshold, the increase in the distortion on the data values. For example, referring to Equation (9), the comparison result may include the Euclidean distance of ||Checkrx— Checktx||, where Checkrxis the computed error detected values, as described in Equation (7), and Checks is the summation of the error detection values received from the first UE 1002 and the second UE 1006, as described in Equation (8).

[0182] In some examples, the comparison result may include a set of magnitudes of the differences between first elements of the second OTA summation of the error detection values received from the first UE 1002 and the second UE 1006 and second elements of the computed error detection values. The base station 1004 may determine, in response to one or more magnitudes of the differences in the set of magnitudes of the differences being greater than a second distance threshold, the increase in the distortion on the data values. For example, the comparison result may include a set of magnitudes of the differences between the elements of the second OTA summation of the error detection values (e.g., Checktxin Equation (8)) and the elements of the computed error detection values (e.g., Checkrxin Equation (7)).

[0183] Using the second error detection scheme, at 1022, the base station 1004 may determine, based on the redundancy matrix, computed error detection integer values based on the first OTA summation of the data values and the first set of lattice point. At 1022, the base station 1004 may also determine an estimated summation of error detection integer values based on the second OTA summation of the error detection values and the second set of lattice points. The data values and the error detection values are received from the first UE 1002 and the second UE 1006. For example, referring to Equation (24), the base station 1004 may determine computed error detection integer values (e.g., Checkrxin Equation (24)) based on the first OTA summation of the data values (e.g., « / ) based on the redundancy matrix JI. Referring to Equation (25), the base station may determine an estimated summation of error detection integer values based on the second OTA summation of the error detection values (e.g., Checks in Equation (25)).

[0184] At 1024, the base station 1004 may compare the computed error detection integer values (e.g., Checkrxin Equation (24)) with the estimated summation of the error detection integer values (e.g., Checks in Equation (25)) to obtain a comparison result.

[0185] At 1026, the base station 1004 may identify the error on the data values. For example, if the comparison result includes a match between the computed error detection 129025-2652WO01Qualcomm Ref. No. 2501845 WO 53 / 84integer values (e.g., Checkrxin Equation (24)) and the estimated summation of the error detection integer values (e.g., Checktx in Equation (25)) from the first UE 1002 and the second UE 1006, the base station 1004 may identify that no error on the data values. For example, if the comparison result includes a mismatch between the computed error detection integer values (e.g., Checkrxin Equation (24)) and the estimated summation of the error detection integer values (e.g., Checktx in Equation (25)) from the first UE 1002 and the second UE 1006, the base station 1004 may identify that there exist errors in the data values.

[0186] At 1028, the base station 1004 may perform a data corrective measure with the first UE 1002, the second UE 1006, or both, based on an error determined for data values based on an OTA summation of the data values from the first UE 1002 and the second UE 1006 and a second OTA summation of error detection values received from the first UE 1002 and the second UE 1006. For example, the data corrective measure may include the base station 1004 requests a retransmission of the data values from the first UE 1002 or the second UE 1006, or the base station 1004 initiates an update process to coefficients of a pre-equalization process in the first UE 1002 or the second UE 1006.

[0187] At 1030, based on the relevant inputs received (e.g., at 1014) from the first UE 1002 and the second UE 1006, the base station 1004 may compute updated parameters for the AI / ML model (e.g., AI / ML model 1040) and, at 1032, broadcasts the updated model back to the first UE 1002 and the second UE 1006.

[0188] FIG. 11 is a flowchart 1100 illustrating methods of wireless communication at a first UE in accordance with various aspects of the present disclosure. The method may be performed by the first UE in collaboration with a network entity. The network entity may be a base station, or a component of a base station, in the access network of FIG.1 or a core network component (e.g., base station 102, 310, 1004; or the network entity 1302 in the hardware implementation of FIG. 13). The first UE may be the UE 104, 350, 612, 614, 616, 702, 704, 952, 954, 956, 1002, or the apparatus 1304 in the hardware implementation of FIG. 13. By providing a robust mechanism for error detection in OTA aggregation of federated learning model parameters, the methods ensure training performance is not compromised even under noisy channel conditions, thereby enhancing the reliability and accuracy of federated model training. Additionally, by leveraging lattice-based encoding and quantization, the methods ensure that even when analog OTA summation is used, the base station can detect 129025-2652WO01Qualcomm Ref. No. 2501845 WO 54 / 84errors on the original model parameters, thereby ensuring reliability and reproducibility of the training process. In some examples, by supporting partial retransmission through element-wise error comparison, the methods allow affected data segments to be resent instead of the entire data packet, thereby reducing overhead and improving resource efficiency.

[0189] As shown in FIG. 11, at 1102, the first UE may transmit, to a network entity, communication information. The communication information may include: one or more data values associated with communication between the first UE and the network entity, and one or more error detection values associated with the one or more data values, where the one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points. FIG. 6, FIG. 7, FIG. 9, and FIG. 10 illustrate various aspects of the steps in connection with flowchart 1100. For example, referring to FIG.10, the first UE 1002 may, at 1014, transmit, to a network entity (e.g., base station 1004), communication information. The communication information may include: one or more data values associated with communication between the first UE 1002 and the network entity (e.g., base station 1004), and one or more error detection values associated with the one or more data values. The one or more data values are represented as analog values or integer values associated with a first set of lattice points (e.g., lattice points 802, 804, 806 in the Cartesian 2D lattice in FIG. 8A or lattice points 852, 854, 856 in the hexagonal 2D lattice in FIG. 8B), and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points. In some aspects, 1102 may be performed by the error detection component 198.

[0190] At 1104, the first UE may perform, based on a corrective measure indication from the network entity, a data corrective measure with the network entity. An error on the one or more data values is based on a first OTA summation of the one or more data values from a set of multiple UEs including the first UE and a second OTA summation of error detection values from the set of multiple UEs. For example, referring to FIG.10, the first UE 1002 may, at 1028, perform, based on a corrective measure indication from the network entity (e.g., base station 1004), a data corrective measure with the network entity. An error on the one or more data values is based on a first OTA summation of the one or more data values from a set of multiple UEs including the 129025-2652WO01Qualcomm Ref. No. 2501845 WO 55 / 84first UE 1002 and a second OTA summation of error detection values from the set of multiple UEs (e.g., the first UE 1002 and the second UE 1006). In some aspects, 1104 may be performed by the error detection component 198.

[0191] In some aspects, the one or more data values may be represented as the analog values, and the first UE may calculate, based on a redundancy matrix, the one or more error detection values based on the one or more data values. The redundancy matrix may include elements of real values. For example, referring to Equation (2), the one or more data values may be xj, which may be analog values, and the first UE may calculate, based on a redundancy matrix c / Z in Equation (5), the one or more error detection values cj based on the one or more data values (e.g., xj). The redundancy matrix (e.g., c / Z in Equation (5)) may include elements of real values.

[0192] In some aspects, the one or more data values may be represented as the integer values associated with the first set of lattice points, and the first UE may calculate, based on a redundancy matrix, the one or more error detection values based on the integer values associated with the first set of lattice points. The redundancy matrix may include elements of the integer values, and the redundancy matrix may map the integer values representing the one or more error detection values to the error detection values using a second set of lattice points. For example, referring to Equation (20), the one or more data values may be Xj =and xj may be integer values associated with the first set of lattice points. Referring to Equation (21), the first UE 1002 may calculate, based on a redundancy matrix (c / Z in Equation (21)), the one or more error detection values (e.g., / ??,) based on the integer values associated with the first set of lattice points. The redundancy matrix (e.g., c / Z in Equation (21)) may include elements of the integer values, and the redundancy matrix (e.g., c / Z in Equation (21)) may map the integer values representing the one or more error detection values to the error detection values using a second set of lattice points.

[0193] FIG. 12 is a flowchart 1200 illustrating methods of wireless communication at a network entity in accordance with various aspects of the present disclosure. The method may be performed by a network entity in collaboration with a UE. The network entity may be a base station, or a component of a base station, in the access network of FIG. 1 or a core network component (e.g., base station 102, 310, 1004; or the network entity 1302 in the hardware implementation of FIG. 13). The UE may be the UE 104, 350, 612, 614, 616, 702, 704, 952, 954, 956, 1002, or the apparatus 1304129025-2652WO01Qualcomm Ref. No. 2501845 WO 56 / 84in the hardware implementation of FIG. 13. By providing a robust mechanism for error detection in OTA aggregation of federated learning model parameters, the methods ensure training performance is not compromised even under noisy channel conditions, thereby enhancing the reliability and accuracy of federated model training. Additionally, by leveraging lattice-based encoding and quantization, the methods ensure that even when analog OTA summation is used, the base station can detect errors on the original model parameters, thereby ensuring reliability and reproducibility of the training process. In some examples, by supporting partial retransmission through element-wise error comparison, the methods allow affected data segments to be resent instead of the entire data packet, thereby reducing overhead and improving resource efficiency.

[0194] As shown in FIG. 12, at 1202, the network entity may receive, from each UE of a set of multiple UEs, communication information. For each UE in the set of multiple UEs, the communication information may include: one or more data values associated with communication between the UE and the network entity, and one or more error detection values associated with the one or more data values. The one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points. FIG. 6, FIG. 7, FIG. 9, and FIG. 10 illustrate various aspects of the steps in connection with flowchart 1200. For example, referring to FIG. 10, the network entity (e.g., base station 1004) may, at 1014, receive, from each UE of a set of multiple UEs (e.g., the first UE 1002 and the second UE 1006), communication information. For each UE in the set of multiple UEs (e.g., the first UE 1002 and the second UE 1006), the communication information may include: one or more data values (e.g., xj in Equation (2)) associated with communication between the UE and the network entity, and one or more error detection values (e.g., cj in Equation (5)) associated with the one or more data values (e.g., Xj in Equation (2)). The one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points. In some aspects, 1202 may be performed by the error detection component 199.

[0195] At 1204, the network entity may perform a data corrective measure with the set of multiple UEs based on an error determined for data values based on a first OTA 129025-2652WO01Qualcomm Ref. No. 2501845 WO 57 / 84summation of the data values from the set of multiple UEs and a second OTA summation of error detection values received from the set of multiple UEs. For example, referring to FIG. 10, the network entity (e.g., base station 1004) may, at 1028, perform a data corrective measure with the set of multiple UEs (e.g., the first UE 1002 and the second UE 1006) based on an error determined for data values based on a first OTA summation of the data values from the set of multiple UEs and a second OTA summation of error detection values received from the set of multiple UEs. In some aspects, 1204 may be performed by the error detection component 199.

[0196] In some aspects, the communication information includes model information associated with an AI / ML model for the communication between the set of multiple UEs and the network entity. For example, referring to FIG. 10, the communication information (e.g., at 1014) may include model information associated with an AI / ML model 1040 for the communication between the set of multiple UEs (e.g., the first UE 1002 and the second UE 1006) and the network entity (e.g., base station 1004).

[0197] In some aspects, the first OTA summation may include a first deviation component, and the second OTA summation include a second deviation component. The first deviation component and the second deviation component may indicate an additive noise or errors related to a communication channel. For example, referring to Equation (3), the first OTA summation (e.g., n) may include a first deviation component (e.g., z). Referring to Equation (6), the second OTA summation (e.g., ri) may include a second deviation component (e.g., z’). The first deviation component (e.g., z) and the second deviation component (e.g., z’) may indicate an additive noise (e.g., z) and errors related to the communication channel between the base station 1004 and the first UE 1002 (or the second UE 1006).

[0198] In some aspects, the data values may be represented as analog values, and the model information from each UE of the set of multiple UEs includes a first number of analog values associated with the AI / ML model and a second number of error detection values received from the set of multiple UEs, and the second number is less than the first number. For example, referring to Equation (3), the data values (e.g., x?) may be represented as analog values, and the model information from each UE of the set of multiple UEs (e.g., the first UE 1002 and the second UE 1006) may include a first number (e.g., K) of analog values associated with the AI / ML model and a second number (e.g., C) of error detection values received from the set of multiple UEs, and the second number (e.g., C) is less than the first number (e.g., K).129025-2652WO01Qualcomm Ref. No. 2501845 WO 58 / 84

[0199] In some aspects, the received error detection value from each UE of the set of multiple UEs may be based on a redundancy matrix and the analog value associated with a respective UE. The redundancy matrix includes elements associated with real values, and the redundancy matrix has rows based on the second number and columns based on the first number. For example, referring to Equation (5), the received error detection value (e.g., ) from each UE of the set of multiple UEs (e.g., the first UE 1002 and the second UE 1006) may be based on a redundancy matrix (e.g., c / Z in Equation (5)) and the analog value (e.g., xj) associated with a respective UE. The redundancy matrix (e.g., c / Z in Equation (5)) includes elements associated with real values, and the redundancy matrix (e.g., c / Z in Equation (5)) has rows based on the second number (e.g., C) and columns based on the first number (e.g., K).

[0200] In some aspects, the network entity may determine, using the redundancy matrix, computed error detection values based on the first OTA summation of the analog values received from the set of multiple UEs; compare the computed error detection values with the second OTA summation of the error detection values received from the set of multiple UEs to obtain a comparison result; and identify, based on the comparison result, an increase on a distortion on the data values. For example, referring to FIG. 10, the network entity (e.g., base station 1004) may, at 1016, determine, using the redundancy matrix, computed error detection values (e.g., Checks in Equation (7)) based on the first OTA summation of the analog values received from the set of multiple UEs; at, 1018, compare the computed error detection values (e.g., Checkrxwith the second OTA summation (e.g., Checktx) of the error detection values received from the set of multiple UEs to obtain a comparison result; and, at 1020, identify, based on the comparison result, an increase on a distortion on the data values.

[0201] In some aspects, to perform the data corrective measure with the set of multiple UEs (e.g., at 1204), the network entity may perform, in response to the increase in the distortion on the data values, the data corrective measure with the set of multiple UEs, and the data corrective measure includes one or more of requesting a retransmission of the data values, or initiating an update process to coefficients of a pre-equalization process. For example, at 1028, the network entity (e.g., base station 1004) may, in response to the increase in the distortion on the data values, request a retransmission of the data values, or initiate an update process to coefficients of a pre-equalization process.129025-2652WO01Qualcomm Ref. No. 2501845 WO 59 / 84

[0202] In some aspects, the comparison result may include a Euclidean distance between the computed error detection values and the second OTA summation of the error detection values received from the set of multiple UEs, and to identify, based on the comparison result, the increase in the distortion on the data values, the network entity may determine, in response to the Euclidean distance that is greater than a first distance threshold, the increase in the distortion on the data values. For example, referring to Equation (9), the comparison result may include the Euclidean distance (e.g., ||Checkrx— Checktx||) between the computed error detection values (e.g., Check-in Equation (7)) and the second OTA summation (e.g., Checks in Equation (8)) of the error detection values received from the set of multiple UEs.

[0203] In some aspects, the comparison result may include a set of magnitudes of the differences between first elements of the second OTA summation (e.g., Checktxin Equation (8)) of the error detection values received from the set of multiple UEs and second elements of the computed error detection values (e.g., Checks in Equation (7)).

[0204] In some aspects, to identify the increase in the distortion on the data values, the network entity may determine, in response to one or more magnitudes of the differences in the set of magnitude differences being greater than a second distance threshold, the increase in the distortion on the data values. For example, the network entity (e.g., base station 1004) may determine the increase in the distortion on the data values if one or more magnitudes of the differences in the set of magnitudes of the differences between elements of Checks (in Equation (8)) and Checks (in Equation (7)) are greater than the second distance threshold.

[0205] In some aspects, to perform the data corrective measure with the set of multiple UEs (e.g., at 1204), the network entity may request a retransmission of a subset of analog data values. The subset of analog data values may be based on the one or more magnitudes of the differences that are greater than a distance threshold, and the subset of analog data values may be associated with the one or more magnitudes of the differences. For example, at 1028, the network entity (e.g., base station 1004) may request a retransmission of a subset of analog data values, and the subset of analog data values may be based on the one or more magnitudes of the differences between elements of Checks (in Equation (8)) and Checks (in Equation (7)) that are greater than a distance threshold.

[0206] In some aspects, the network entity may transmit, to the set of multiple UEs, error detection parameters. The error detection parameters may include one or more of the 129025-2652WO01Qualcomm Ref. No. 2501845 WO 60 / 84first number of analog values, the second number of error detection values, the elements of the redundancy matrix, or threshold information including at least one of a first distance threshold associated with a Euclidean distance between the computed error detection values and the second OTA summation of received error detection values received from the set of multiple UEs or the second distance threshold. For example, referring to FIG. 10, the network entity (e.g., base station 1004) may, at 1010, transmit error detection parameters to the set of multiple UEs (e.g., the first UE 1002 and the second UE 1006). The error detection parameters may include one or more of the first number (e.g., K) of analog values, the second number (e.g., C) of error detection values, the elements of the redundancy matrix, or threshold information including at least one of a first distance threshold associated with a Euclidean distance between the computed error detection values and the second OTA summation of received error detection values received from the set of multiple UEs or the second distance threshold.

[0207] In some aspects, the data values may be quantized based on the first set of lattice points and are represented by a first set of integer values associated with the first set of lattice points, and the model information from each UE of the set of multiple UEs includes a first number of data values associated with the AI / ML model represented by the first set of integer values and a second number of received error detection values. The second number of received error detection values are generated using a second set of lattice points and are represented by a second set of integer values associated with the second set of lattice points, and where the second number is less than the first number. For example, referring to Equation (20), the data values may be quantized based on the first set of lattice points and are represented by a first set of integer values associated with the first set of lattice points (e.g., A%), and the model information from each UE of the set of multiple UEs includes a first number (e.g., K) of data values associated with the AI / ML model represented by the first set of integer values and a second number (e.g., C) of received error detection values. The second number of received error detection values are generated using a second set of lattice points and are represented by a second set of integer values associated with the second set of lattice points (e.g., Ac), and where the second number is less than the first number.

[0208] In some aspects, the second set of integer values associated with the error detection values received from one UE of the set of multiple UEs may be based on a redundancy 129025-2652WO01Qualcomm Ref. No. 2501845 WO 61 / 84matrix and the first set of integer values associated with the data values of the one UE. The redundancy matrix includes elements of the integer values, and the redundancy matrix has rows of the second number and columns of the first number.

[0209] In some aspects, the network entity may determine, based on the redundancy matrix, computed error detection integer values based on the first OTA summation of the data values received from the set of multiple UEs. The network entity may further determine an estimated summation of error detection integer values based on the second OTA summation of the error detection values received from the set of multiple UEs. The network entity may compare the computed error detection integer values with the estimated summation of the error detection integer values to obtain a comparison result. If the comparison result includes a match between the computed error detection integer values and the estimated summation of the error detection integer values, the network entity may identify that there is no error on the data values. If the comparison result includes a mismatch between the computed error detection integer values and the estimated summation of the error detection integer values, the network entity may determine that there is error on the data values. For example, referring to FIG. 10, the network entity (e.g., base station 1004) may, at 1022, determine, based on the redundancy matrix, computed error detection integer values based on the first OTA summation of the data values received from the set of multiple UEs (e.g., the first UE 1002 and the second UE 1006). At 1022, the network entity (e.g., base station 1004) may determine an estimated summation of error detection integer values based on the second OTA summation of the error detection values received from the set of multiple UEs (e.g., the first UE 1002 and the second UE 1006). At 1024, the network entity (e.g., base station 1004) may compare the computed error detection integer values (e.g., Checkrxin Equation (24)) with the estimated summation of the error detection integer values (e.g., Checks in Equation (25)) to obtain a comparison result. At 1026, the network entity (e.g., base station 1004) may identify, based on the comparison result including a match between the computed error detection integer values and the estimated summation of the error detection integer values, that no error on the data values, or identify, based on the comparison result including a mismatch between the computed error detection integer values and the estimated summation of the error detection integer values, the error on the data values.129025-2652WO01Qualcomm Ref. No. 2501845 WO 62 / 84

[0210] In some aspects, to determine the computed error detection integer values, the network entity may determine an integer vector estimation of a summation of the data values based on a first lattice-generating matrix; and determine, based on the integer vector estimation of the summation of data values and the redundancy matrix, the computed error detection integer values. To determine the estimated summation of error detection integer values, the network entity may determine an integer vector estimation of a summation of error detection value based on a second latticegenerating matrix. For example, to determine the computed error detection integer values (e.g., Checkrxin Equation (24)), the network entity (e.g., base station 1004) may determine an integer vector estimation of a summation of the data values based on a first lattice-generating matrix (e.g., 풦 ∈ ℝK×K); and determine, based on the integer vector estimationthe summation of data values and the redundancy matrix 풜, the computed error detection integer values (see Equation (24)). To determine the estimated summation of error detection integer values (e.g., Checktxin Equation (25)), the network entity (e.g., base station 1004) may determine an integer vector estimation (e.g.,of a summation of error detection value based on a second lattice-generating matrix (e.g., 풞 ∈ ℝC×C

[0211] For example, the network entity may determine an integer vector estimation of the data values based on a first lattice matrix (e.g., % in Equation (20)); and determine, based on the integer vector estimation of the data values and the redundancy matrix, the computed error detection integer values.

[0212] In some aspects, the one or more error detection values may be calculated based on a modulo summation operation associated with a prime number. For example, referring to Equation (26), each UE may compute the one or more error detection values as: rrij = modp{풜nj}, where modp{-} represents the modulo operation associated with the prime number p. In this case, to determine the computed error detection integer values, the network entity may determine the computed error detection integer values based on the modulo summation operation associated with the prime number. To determine the estimated summation of error detection integer values, the network entity may determine the estimated summation of the error detection integer values based on the modulo summation operation associated with the prime number. For example, the network entity may determine the computed error detection integer values and determine the estimated summation of the error detection integer values129025-2652WO01Qualcomm Ref. No. 2501845 WO 63 / 84based on a modulo summation operation associated with a prime number based on Equations (27) and (28).

[0213] In some aspects, the network entity may transmit, to the set of multiple UEs, error detection parameters. The error detection parameters may include one or more of: a first number of rows for the redundancy matrix, a second number of columns for the redundancy matrix, the elements of the redundancy matrix, the prime number associated with the modulo summation operation, a first lattice-generating matrix associated with the first set of lattice points associated with the data values, or a second lattice-generating matrix associated with the second set of lattice points associated with the error detection values. For example, referring to FIG. 10, the network entity (e.g., base station 1004) may, at 1010, transmit error detection parameters to the set of multiple UEs (e.g., the first UE 1002 and the second UE 1006). The error detection parameters may include one or more of a first number (e.g., K) of rows for the redundancy matrix, a second number (e.g., C) of columns for the redundancy matrix, the elements of the redundancy matrix, the prime number, a first lattice-generating matrix (e.g., 풦 ∈ ℝK×K) associated with the first set of lattice points associated with the data values, or a second lattice-generating matrix (e.g., C E associated with the second set of lattice points associated with the error detection values.

[0214] FIG. 13 is a diagram 1300 illustrating an example of a hardware implementation for an apparatus 1304. The apparatus 1304 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 1304 may include at least one cellular baseband processor (or processing circuitry) 1324 (also referred to as a modem) coupled to one or more transceivers 1322 (e.g., cellular RF transceiver). The cellular baseband processor(s) (or processing circuitry) 1324 may include at least one on-chip memory (or memory circuitry) 1324'. In some aspects, the apparatus 1304 may further include one or more subscriber identity modules (SIM) cards 1320 and at least one application processor (or processing circuitry) 1306 coupled to a secure digital (SD) card 1308 and a screen 1310. The application processor(s) (or processing circuitry) 1306 may include on-chip memory (or memory circuitry) 1306'. In some aspects, the apparatus 1304 may further include a Bluetooth module 1312, a WLAN module 1314, an SPS module 1316 (e.g., GNSS module), one or more sensor modules 1318 (e.g., barometric pressure sensor / altimeter; motion sensor such as inertial measurement unit (IMU), gyroscope, and / or accelerometer(s); magnetometer, audio 129025-2652WO01Qualcomm Ref. No. 2501845 WO 64 / 84and / or other technologies used for positioning), additional memory modules 1326, a power supply 1330, and / or a camera 1332. The Bluetooth module 1312, the WLAN module 1314, and the SPS module 1316 may include an on-chip transceiver (TRX) (or in some cases, just a receiver (RX)). The Bluetooth module 1312, the WLAN module 1314, and the SPS module 1316 may include their own dedicated antennas and / or utilize the antennas 1380 for communication. The cellular baseband processor(s) (or processing circuitry) 1324 communicates through the transceiver(s) 1322 via one or more antennas 1380 with the UE 104 and / or with an RU associated with a network entity 1302. The cellular baseband processor(s) (or processing circuitry) 1324 and the application processor(s) (or processing circuitry) 1306 may each include a computer-readable medium / memory (or memory circuitry) 1324', 1306', respectively. The additional memory modules 1326 may also be considered a computer-readable medium / memory (or memory circuitry). Each computer-readable medium / memory (or memory circuitry) 1324', 1306', 1326 may be non-transitory. The cellular baseband processor(s) (or processing circuitry) 1324 and the application processor(s) (or processing circuitry) 1306 are each responsible for general processing, including the execution of software stored on the computer-readable medium / memory (or memory circuitry). The software, when executed by the cellular baseband processor(s) (or processing circuitry) 1324 / application processor(s) (or processing circuitry) 1306, causes the cellular baseband processor(s) (or processing circuitry) 1324 / application processor(s) (or processing circuitry) 1306 to perform the various functions described supra. The cellular baseband processor(s) (or processing circuitry) 1324 and the application processor(s) (or processing circuitry) 1306 are configured to perform the various functions described supra based at least in part of the information stored in the memory (or memory circuitry). That is, the cellular baseband processor(s) (or processing circuitry) 1324 and the application processor(s) (or processing circuitry) 1306 may be configured to perform a first subset of the various functions described supra without information stored in the memory and may be configured to perform a second subset of the various functions described supra based on the information stored in the memory. The computer-readable medium / memory (or memory circuitry) may also be used for storing data that is manipulated by the cellular baseband processor(s) (or processing circuitry) 1324 / application processor(s) (or processing circuitry) 1306 when executing software. The cellular baseband processor(s) (or processing circuitry) 1324 / application processor(s) (or 129025-2652WO01Qualcomm Ref. No. 2501845 WO 65 / 84processing circuitry) 1306 may be a component of the UE 350 and may include the at least one memory 360 and / or at least one of the TX processor 368, the RX processor 356, and the controller / processor 359. In one configuration, the apparatus 1304 may be at least one processor chip (modem and / or application) and include just the cellular baseband processor(s) (or processing circuitry) 1324 and / or the application processor(s) (or processing circuitry) 1306, and in another configuration, the apparatus 1304 may be the entire UE (e.g., see UE 350 of FIG. 3) and include the additional modules of the apparatus 1304.

[0215] As discussed supra, the component 198 may be configured to transmit, to a network entity, communication information, where the communication information includes: one or more data values associated with communication between the first UE and the network entity, and one or more error detection values associated with the one or more data values, where the one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points; and perform, based on a corrective measure indication from the network entity, a data corrective measure with the network entity, where an error on the one or more data values is based on a first OTA summation of the one or more data values from a set of multiple UEs including the first UE and a second OTA summation of error detection values from the set of multiple UEs. The component 198 may be further configured to perform any of the aspects described in connection with the flowchart in FIG. 11, and / or performed by the UE 1002 in FIG. 10. The component 198 may be within the cellular baseband processor(s) (or processing circuitry) 1324, the application processor(s) (or processing circuitry) 1306, or both the cellular baseband processor(s) (or processing circuitry) 1324 and the application processor(s) (or processing circuitry) 1306. The component 198 may be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by one or more processors configured to perform the stated processes / algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated processes / algorithm individually or in combination. As shown, the apparatus 1304 may include a variety of components configured for various functions. In one configuration, the apparatus 1304, and in particular the cellular baseband processor(s) 129025-2652WO01Qualcomm Ref. No. 2501845 WO 66 / 84(or processing circuitry) 1324 and / or the application processor(s) (or processing circuitry) 1306, includes means for transmitting, to a network entity, communication information, where the communication information includes: one or more data values associated with communication between the first UE and the network entity, and one or more error detection values associated with the one or more data values, where the one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points; and means for performing, based on a corrective measure indication from the network entity, a data corrective measure with the network entity, where an error on the one or more data values is based on a first OTA summation of the one or more data values from a set of multiple UEs including the first UE and a second OTA summation of error detection values from the set of multiple UEs. The apparatus 1304 may further include means for performing any of the aspects described in connection with the flowchart in FIG. 11, and / or aspects performed by the UE 1002 in FIG. 10. The means may be the component 198 of the apparatus 1304 configured to perform the functions recited by the means. As described supra, the apparatus 1304 may include the TX processor 368, the RX processor 356, and the controller / processor 359. As such, in one configuration, the means may be the TX processor 368, the RX processor 356, and / or the controller / processor 359 configured to perform the functions recited by the means.

[0216] FIG. 14 is a diagram 1400 illustrating an example of a hardware implementation for a network entity 1402. The network entity 1402 may be a BS, a component of a BS, or may implement BS functionality. The network entity 1402 may include at least one of a CU 1410, a DU 1430, or an RU 1440. For example, depending on the layer functionality handled by the component 199, the network entity 1402 may include the CU 1410; both the CU 1410 and the DU 1430; each of the CU 1410, the DU 1430, and the RU 1440; the DU 1430; both the DU 1430 and the RU 1440; or the RU 1440. The CU 1410 may include at least one CU processor (or processing circuitry) 1412. The CU processor(s) (or processing circuitry) 1412 may include on-chip memory (or memory circuitry) 1412'. In some aspects, the CU 1410 may further include additional memory modules 1414 and a communications interface 1418. The CU 1410 communicates with the DU 1430 through a midhaul link, such as an Fl interface. The DU 1430 may include at least one DU processor (or processing circuitry) 1432. The 129025-2652WO01Qualcomm Ref. No. 2501845 WO 67 / 84DU processor(s) (or processing circuitry) 1432 may include on-chip memory (or memory circuitry) 1432'. In some aspects, the DU 1430 may further include additional memory modules 1434 and a communications interface 1438. The DU 1430 communicates with the RU 1440 through a fronthaul link. The RU 1440 may include at least one RU processor (or processing circuitry) 1442. The RU processor(s) (or processing circuitry) 1442 may include on-chip memory (or memory circuitry) 1442'. In some aspects, the RU 1440 may further include additional memory modules 1444, one or more transceivers 1446, antennas 1480, and a communications interface 1448. The RU 1440 communicates with the UE 104. The on-chip memory (or memory circuitry) 1412', 1432', 1442' and the additional memory modules 1414, 1434, 1444 may each be considered a computer-readable medium / memory (or memory circuitry). Each computer-readable medium / memory (or memory circuitry) may be non-transitory. Each of the processors (or processing circuitry) 1412, 1432, 1442 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory (or memory circuitry). The software, when executed by the corresponding processor(s) (or processing circuitry) causes the processor(s) (or processing circuitry) to perform the various functions described supra. The computer-readable medium / memory (or memory circuitry) may also be used for storing data that is manipulated by the processor(s) (or processing circuitry) when executing software.

[0217] As discussed supra, the component 199 may be configured to receive, from each UE of a set of multiple UEs, communication information, where for each UE in the set of multiple UEs, the communication information includes: one or more data values associated with communication between the UE and the network entity, and one or more error detection values associated with the one or more data values, where the one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points; and perform a data corrective measure with the set of multiple UEs based on an error determined for data values based on a first OTA summation of the data values from the set of multiple UEs and a second OTA summation of error detection values received from the set of multiple UEs. The component 199 may be further configured to perform any of the aspects described in connection with the flowchart in FIG. 12, and / or performed by the base station 1004 in FIG. 10. The component 199 may be 129025-2652WO01Qualcomm Ref. No. 2501845 WO 68 / 84within one or more processors (or processing circuitry) of one or more of the CU 1410, DU 1430, and the RU 1440. The component 199 may be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by one or more processors configured to perform the stated processes / algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated processes / algorithm individually or in combination. The network entity 1402 may include a variety of components configured for various functions. In one configuration, the network entity 1402 includes means for receiving, from each UE of a set of multiple UEs, communication information, where for each UE in the set of multiple UEs, the communication information includes: one or more data values associated with communication between the UE and the network entity, and one or more error detection values associated with the one or more data values, where the one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points; and means for performing a data corrective measure with the set of multiple UEs based on an error determined for data values based on a first OTA summation of the data values from the set of multiple UEs and a second OTA summation of error detection values received from the set of multiple UEs. The network entity 1402 may further include means for performing any of the aspects described in connection with the flowchart in FIG. 12, and / or aspects performed by the base station 1004 in FIG. 10. The means may be the component 199 of the network entity 1402 configured to perform the functions recited by the means. As described supra, the network entity 1402 may include the TX processor 316, the RX processor 370, and the controller / processor 375. As such, in one configuration, the means may be the TX processor 316, the RX processor 370, and / or the controller / processor 375 configured to perform the functions recited by the means.

[0218] This disclosure provides a method for wireless communication at a network entity.The method may include receiving, from each UE of a set of multiple UEs, communication information, where for each UE in the set of multiple UEs, the communication information includes: one or more data values associated with communication between the UE and the network entity, and one or more error 129025-2652WO01Qualcomm Ref. No. 2501845 WO 69 / 84detection values associated with the one or more data values, where the one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points; and performing a data corrective measure with the set of multiple UEs based on an error determined for data values based on a first OTA summation of the data values from the set of multiple UEs and a second OTA summation of error detection values received from the set of multiple UEs. By providing a robust mechanism for error detection in OTA aggregation of federated learning model parameters, the methods ensure training performance is not compromised even under noisy channel conditions, thereby enhancing the reliability and accuracy of federated model training. Additionally, by leveraging lattice-based encoding and quantization, the methods ensure that even when analog OTA summation is used, the base station can detect errors on the original model parameters, thereby ensuring reliability and reproducibility of the training process. In some examples, by supporting partial retransmission through element-wise error comparison, the methods allow affected data segments to be resent instead of the entire data packet, thereby reducing overhead and improving resource efficiency.

[0219] It is understood that the specific order or hierarchy of blocks in the processes / flowcharts disclosed is an illustration of example approaches. Based upon design preferences, it is understood that the specific order or hierarchy of blocks in the processes / flowcharts may be rearranged. Further, some blocks may be combined or omitted. The accompanying method claims present elements of the various blocks in a sample order, and are not limited to the specific order or hierarchy presented.

[0220] The previous 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 generic principles defined herein may be applied to other aspects. Thus, the claims are not limited to the aspects described herein, but are to be accorded the full scope consistent with the language claims. Reference to an element in the singular does not mean “one and only one” unless specifically so stated, but rather “one or more.” Terms such as “if,” “when,” and “while” do not imply an immediate temporal relationship or reaction. That is, these phrases, e.g., “when,” do not imply an immediate action in response to or during the occurrence of an action, but simply imply that if a condition is met then an action 129025-2652WO01Qualcomm Ref. No. 2501845 WO 70 / 84will occur, but without requiring a specific or immediate time constraint for the action to occur. The word “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects. Unless specifically stated otherwise, the term “some” 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 multiples of A, multiples of B, or multiples of C. 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 and B and C, where any such combinations may contain one or more member or members of A, B, or C. Sets should be interpreted as a set of elements where the elements number one or more. Accordingly, for a set of X, X would include one or more elements. When at least one processor (i.e., a set of one or more processor P) is configured to perform a set of functions F, each processor of P may be configured to perform a subset S of F, where S £ F. Accordingly, each processor of the at least one processor may be configured to perform a particular subset of the set of functions, where the subset is the full set, a proper subset of the set, or an empty subset of the set. A processor may be referred to as processor circuitry. A memory / memory module may be referred to as memory circuitry. If a first apparatus receives data from or transmits data to a second apparatus, the data may be received / transmitted directly between the first and second apparatuses, or indirectly between the first and second apparatuses through a set of apparatuses. A device configured to “output” data or “provide” data, such as a transmission, signal, or message, may transmit the data, for example with a transceiver, or may send the data to a device that transmits the data. A device configured to “obtain” data, such as a transmission, signal, or message, may receive, for example with a transceiver, or may obtain the data from a device that receives the data. Information stored in a memory includes instructions and / or data. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are encompassed by the claims. Moreover, nothing disclosed herein is dedicated to the public regardless of 129025-2652WO01Qualcomm Ref. No. 2501845 WO 71 / 84whether such disclosure is explicitly recited in the claims. The words “module,” “mechanism,” “element,” “device,” and the like may not be a substitute for the word “means.” As such, no claim element is to be construed as a means plus function unless the element is expressly recited using the phrase “means for.”

[0221] As used herein, the phrase “based on” shall not be construed as a reference to a closed set of information, one or more conditions, one or more factors, or the like. In other words, the phrase “based on A” (where “A” may be information, a condition, a factor, or the like) shall be construed as “based at least on A” unless specifically recited differently.

[0222] The following aspects are illustrative only and may be combined with other aspects or teachings described herein, without limitation.

[0223] Aspect 1 is a method of wireless communication at a network entity. The method includes receiving, from each user equipment (UE) of a set of multiple UEs, communication information, wherein for each UE in the set of multiple UEs, the communication information includes one or more data values associated with communication between the UE and the network entity and one or more error detection values associated with the one or more data values, wherein the one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points; and performing a data corrective measure with the set of multiple UEs based on an error determined for data values based on a first over-the-air (OTA) summation of the data values from the set of multiple UEs and a second OTA summation of the error detection values received from the set of multiple UEs.

[0224] Aspect 2 is the method of aspect 1, wherein the communication information includes model information associated with an artificial intelligence or machine learning (AI / ML) model for the communication between the set of multiple UEs and the network entity.

[0225] Aspect 3 is the method of any of aspects 1 to 2, wherein the first OTA summation includes a first deviation component, and the second OTA summation includes a second deviation component, and wherein the first deviation component and the second deviation component indicate an additive noise or errors related to a communication channel.129025-2652WO01Qualcomm Ref. No. 2501845 WO 72 / 84

[0226] Aspect 4 is the method of any of aspects 1 to 2, wherein the data values are represented as analog values, and the model information from each UE of the set of multiple UEs includes a first number of analog values associated with the AI / ML model and a second number of error detection values received from the set of multiple UEs, and wherein the second number is less than the first number.

[0227] Aspect 5 is the method of aspect 4, wherein the received error detection value from each UE of the set of multiple UEs is based on a redundancy matrix and the analog values associated with a respective UE, wherein the redundancy matrix includes elements associated with real values, and the redundancy matrix has rows based on the second number and columns based on the first number.

[0228] Aspect 6 is the method of aspect 5, wherein the method further includes determining, using the redundancy matrix, computed error detection values based on the first OTA summation of the data analog values received from the set of multiple UEs; and comparing the computed error detection values with the second OTA summation of the error detection values received from the set of multiple UEs to obtain a comparison result, wherein identifying the error on the data values comprises identifying, based on the comparison result, an increase on a distortion on the data values.

[0229] Aspect 7 is the method of aspect 6, wherein performing the data corrective measure with the set of multiple UEs comprises performing, in response to the increase in the distortion on the data values, the data corrective measure with the set of multiple UEs, and wherein the data corrective measure includes one or more of requesting a retransmission of the data values or initiating an update process to coefficients of a pre-equalization process.

[0230] Aspect 8 is the method of aspect 6, wherein the comparison result includes a Euclidean distance between the computed error detection values and the second OTA summation of the error detection values received from the set of multiple UEs, and wherein identifying, based on the comparison result, the increase in the distortion on the data values comprises determining, in response to the Euclidean distance that is greater than a first distance threshold, the increase in the distortion on the data values.

[0231] Aspect 9 is the method of aspect 6, wherein the comparison result includes a set of magnitudes of differences between first elements of the second OTA summation of the error detection values received from the set of multiple UEs and second elements of the computed error detection values.129025-2652WO01Qualcomm Ref. No. 2501845 WO 73 / 84

[0232] Aspect 10 is the method of aspect 9, wherein identifying the increase in the distortion on the data values comprises determining, in response to one or more magnitudes of the differences in the set of magnitudes of the differences being greater than a second distance threshold, the increase in the distortion on the data values.

[0233] Aspect 11 is the method of aspect 10, wherein performing the data corrective measure with the set of multiple UEs comprises requesting a retransmission of a subset of analog data values, wherein the subset of analog data values is based on the one or more magnitudes of the differences that are greater than a distance threshold, wherein the subset of analog data values is associated with the one or more magnitudes of the differences.

[0234] Aspect 12 is the method of aspect 6, wherein the method further includes transmitting, to the set of multiple UEs, error detection parameters, wherein the error detection parameters include one or more of the first number of analog values, the second number of error detection values, the elements of the redundancy matrix, or threshold information comprising at least one of a first distance threshold associated with a Euclidean distance between the computed error detection values and the second OTA summation of received error detection values received from the set of multiple UEs or a second distance threshold associated with a set of magnitudes of differences between first elements of the second OTA summation of the received error detection values and second elements of the computed error detection values.

[0235] Aspect 13 is the method of any of aspects 2 to 12, wherein the data values are quantized based on the first set of lattice points and are represented by a first set of integer values associated with the first set of lattice points, and the model information from each UE of the set of multiple UEs includes a first number of data values associated with the AI / ML model represented by the first set of integer values and a second number of received error detection values, wherein the second number of received error detection values are generated using a second set of lattice points and are represented by a second set of integer values associated with the second set of lattice points, and wherein the second number is less than the first number.

[0236] Aspect 14 is the method of aspect 13, wherein the second set of integer values associated with the error detection values received from one UE of the set of multiple UEs are based on a redundancy matrix and the first set of integer values associated with the data values of the one UE, wherein the redundancy matrix includes elements129025-2652WO01Qualcomm Ref. No. 2501845 WO 74 / 84of the integer values, and wherein the redundancy matrix has rows of the second number and columns of the first number.

[0237] Aspect 15 is the method of aspect 14, wherein the method further includes determining, based on the redundancy matrix, computed error detection integer values based on the first OTA summation of the data values received from the set of multiple UEs; determining an estimated summation of error detection integer values based on the second OTA summation of the error detection values received from the set of multiple UEs; comparing the computed error detection integer values with the estimated summation of error detection integer values to obtain a comparison result; and identifying, based on the comparison result comprising a match between the computed error detection integer values and the estimated summation of the error detection integer values, that no error on the data values, or identifying, based on the comparison result comprising a mismatch between the computed error detection integer values and the estimated summation of the error detection integer values, the error on the data values.

[0238] Aspect 16 is the method of aspect 15, wherein determining the computed error detection integer values comprises determining an integer vector estimation of a summation of data values based on a first lattice-generating matrix; and determining, based on the integer vector estimation of the summation of data values and the redundancy matrix, the computed error detection integer values, and wherein determining the estimated summation of error detection integer values comprises determining an integer vector estimation of a summation of error detection value based on a second lattice-generating matrix.

[0239] Aspect 17 is the method of aspect 15, wherein the one or more error detection values are calculated based on a modulo summation operation associated with a prime number, wherein determining the computed error detection integer values based on the first OTA summation of the data values comprises determining the computed error detection integer values based on the modulo summation operation associated with the prime number, and wherein determining the estimated summation of error detection integer values comprises determining the estimated summation of the error detection integer values based on the modulo summation operation associated with the prime number.

[0240] Aspect 18 is the method of aspect 15, wherein the method further includes transmitting, to the set of multiple UEs, error detection parameters, wherein the error 129025-2652WO01Qualcomm Ref. No. 2501845 WO 75 / 84detection parameters include one or more of a first number of rows for the redundancy matrix, a second number of columns for the redundancy matrix, the elements of the redundancy matrix, a prime number associated with a modulo summation operation, a first lattice-generating matrix associated with the first set of lattice points associated with of data values, or a second lattice-generating matrix associated with the second set of lattice points associated with the error detection values.

[0241] Aspect 19 is an apparatus for wireless communication at a network entity, comprising:at least one memory; and at least one processor coupled to the at least one memory, the at least one processor is configured to perform the method of any of aspects 1 to 18.

[0242] Aspect 20 is the apparatus for wireless communication at a network entity, comprising means for performing each step in the method of any of aspects 1-18.

[0243] Aspect 21 is an apparatus of any of aspects 19-20, further comprising a transceiver configured to receive or to transmit in association with the method of any of aspects 1-18.

[0244] Aspect 22 is a computer-readable medium (e.g., a non-transitory computer-readable medium) storing computer executable code at a network entity, the code when executed by at least one processor causes the at least one processor to perform the method of any of aspects 1-18.

[0245] Aspect 23 is a method of wireless communication at a first user equipment (UE). The method includes transmitting, to a network entity, communication information, wherein the communication information includes one or more data values associated with communication between the first UE and the network entity and one or more error detection values associated with the one or more data values, wherein the one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points; and performing, based on a corrective measure indication from the network entity, a data corrective measure with the network entity, wherein an error on the one or more data values is based on a first over-the-air (OTA) summation of the one or more data values from a set of multiple UEs including the first UE and a second OTA summation of error detection values from the set of multiple UEs.

[0246] Aspect 24 is the method of aspect 23, wherein the one or more data values are represented by the analog values, and wherein the method further comprises 129025-2652WO01Qualcomm Ref. No. 2501845 WO 76 / 84calculating, based on a redundancy matrix, the one or more error detection values based on the one or more data values, wherein the redundancy matrix includes elements of real values.

[0247] Aspect 25 is the method of aspect 23, wherein the one or more data values are represented by the integer values associated with the first set of lattice points, and wherein the method further comprises calculating, based on a redundancy matrix, the one or more error detection values based on the integer values associated with the first set of lattice points, wherein the redundancy matrix includes elements of the integer values, and wherein the redundancy matrix maps the integer values representing the one or more error detection values to the error detection values using a second set of lattice points.

[0248] Aspect 26 is an apparatus for wireless communication at a first UE, comprising: at least one memory; and at least one processor coupled to the at least one memory and, where the at least one processor is configured to perform the method of any of aspects 23-25.

[0249] Aspect 27 is the apparatus for wireless communication at a first UE, comprising means for performing each step in the method of any of aspects 23-25.

[0250] Aspect 28 is an apparatus of any of aspects 26-27, further comprising a transceiver configured to receive or to transmit in association with the method of any of aspects 23-25.

[0251] Aspect 29 is a computer-readable medium (e.g., a non-transitory computer-readable medium) storing computer executable code at a first UE, the code when executed by at least one processor causes the at least one processor to perform the method of any of aspects 23-25.129025-2652WO01

Claims

Qualcomm Ref. No. 2501845 WO 77 / 84CLAIMS WHAT IS CLAIMED IS:

1. An apparatus for wireless communication at a network entity, comprising:at least one memory; andat least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor is configured to:receive, from each user equipment (UE) of a set of multiple UEs, communication information, wherein for each UE in the set of multiple UEs, the communication information includes:one or more data values associated with communication between the UE and the network entity, andone or more error detection values associated with the one or more data values, wherein the one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points; andperform a data corrective measure with the set of multiple UEs based on an error determined for data values based on a first over-the-air (OTA) summation of the data values from the set of multiple UEs and a second OTA summation of the one or more error detection values received from the set of multiple UEs.

2. The apparatus of claim 1, further comprising a transceiver coupled to the at least one processor, wherein to receive the communication information, the at least one processor is configured to receive the communication information via the transceiver, wherein the communication information includes model information associated with an artificial intelligence or machine learning (AI / ML) model for the communication between the set of multiple UEs and the network entity.

3. The apparatus of claim 2, wherein the first OTA summation includes a first deviation component, and the second OTA summation includes a second deviation129025-2652WO01Qualcomm Ref. No. 2501845 WO 78 / 84component, and wherein the first deviation component and the second deviation component indicate an additive noise or errors related to a communication channel.

4. The apparatus of claim 2, wherein the data values are represented as analog values, and the model information from each UE of the set of multiple UEs includes a first number of analog values associated with the AI / ML model and a second number of error detection values received from the set of multiple UEs, and wherein the second number is less than the first number.

5. The apparatus of claim 4, wherein the one or more error detection values from each UE of the set of multiple UEs are based on a redundancy matrix and the analog values associated with a respective UE, wherein the redundancy matrix includes elements associated with real values, and the redundancy matrix has rows based on the second number and columns based on the first number.

6. The apparatus of claim 5, wherein the at least one processor is further configured to:determine, using the redundancy matrix, computed error detection values based on the first OTA summation of the analog values received from the set of multiple UEs;compare the computed error detection values with the second OTA summation of the one or more error detection values received from the set of multiple UEs to obtain a comparison result; andidentify, based on the comparison result, an increase on a distortion on the data values.

7. The apparatus of claim 6, wherein to perform the data corrective measure with the set of multiple UEs, the at least one processor is configured to:perform, in response to the increase in the distortion on the data values, the data corrective measure with the set of multiple UEs, and wherein the data corrective measure includes one or more of:requesting a retransmission of the data values, orinitiating an update process to coefficients of a pre-equalization process. 129025-2652WO01Qualcomm Ref. No. 2501845 WO 79 / 848. The apparatus of claim 6, wherein the comparison result includes a Euclidean distance between the computed error detection values and the second OTA summation of the one or more error detection values received from the set of multiple UEs, and wherein to identify, based on the comparison result, the increase in the distortion on the data values, the at least one processor is configured to:determine, in response to the Euclidean distance that is greater than a first distance threshold, the increase in the distortion on the data values.

9. The apparatus of claim 6, wherein the comparison result includes a set of magnitudes of differences between first elements of the second OTA summation of the one or more error detection values received from the set of multiple UEs and second elements of the computed error detection values.

10. The apparatus of claim 9, wherein to identify the increase in the distortion on the data values, the at least one processor is configured to:determine, in response to one or more magnitudes of the differences in the set of magnitudes of the differences being greater than a second distance threshold, the increase in the distortion on the data values.

11. The apparatus of claim 10, wherein to perform the data corrective measure with the set of multiple UEs, the at least one processor is configured to:request a retransmission of a subset of analog values, wherein the subset of analog values is based on the one or more magnitudes of the differences that are greater than a distance threshold, wherein the subset of analog values is associated with the one or more magnitudes of the differences.

12. The apparatus of claim 6, wherein the at least one processor is further configured to:transmit, to the set of multiple UEs, error detection parameters, wherein the error detection parameters include one or more of:the first number of analog values,129025-2652WO01Qualcomm Ref. No. 2501845 WO 80 / 84the second number of error detection values,the elements of the redundancy matrix, orthreshold information comprising at least one of a first distance threshold associated with a Euclidean distance between the computed error detection values and the second OTA summation of the one or more error detection values received from the set of multiple UEs or a second distance threshold associated with a set of magnitudes of differences between first elements of the second OTA summation of the one or more error detection values and second elements of the computed error detection values.

13. The apparatus of claim 2, wherein the data values are quantized based on the first set of lattice points and are represented by a first set of integer values associated with the first set of lattice points, and the model information from each UE of the set of multiple UEs includes a first number of data values associated with the AI / ML model represented by the first set of integer values and a second number of received error detection values, wherein the second number of received error detection values are generated using the second set of lattice points and are represented by a second set of integer values associated with the second set of lattice points, and wherein the second number is less than the first number.

14. The apparatus of claim 13, wherein the second set of integer values associated with the one or more error detection values received from one UE of the set of multiple UEs are based on a redundancy matrix and the first set of integer values associated with the data values of the one UE, wherein the redundancy matrix includes elements of the integer values, and wherein the redundancy matrix has rows of the second number and columns of the first number.

15. The apparatus of claim 14, wherein the at least one processor is further configured to:determine, based on the redundancy matrix, computed error detection integer values based on the first OTA summation of the data values received from the set of multiple UEs;129025-2652WO01Qualcomm Ref. No. 2501845 WO 81 / 84determine an estimated summation of error detection integer values based on the second OTA summation of the one or more error detection values received from the set of multiple UEs;compare the computed error detection integer values with the estimated summation of the error detection integer values to obtain a comparison result; and identify, based on the comparison result comprising a match between the computed error detection integer values and the estimated summation of the error detection integer values, that no error on the data values, oridentify, based on the comparison result comprising a mismatch between the computed error detection integer values and the estimated summation of the error detection integer values, the error on the data values.

16. The apparatus of claim 15, wherein to determine the computed error detection integer values, the at least one processor is configured to:determine a first integer vector estimation of a first summation of the data values based on a first lattice-generating matrix; anddetermine, based on the integer vector estimation of the summation of data values and the redundancy matrix, the computed error detection integer values, and wherein to determine the estimated summation of the error detection integer values, the at least one processor is configured to:determine a second integer vector estimation of a second summation of error detection value based on a second lattice-generating matrix.

17. The apparatus of claim 15, wherein the one or more error detection values are calculated based on a modulo summation operation associated with a prime number, wherein to determine the computed error detection integer values, the at least one processor is configured to:determine the computed error detection integer values based on the modulo summation operation associated with the prime number, and wherein to determine the estimated summation of the error detection integer values, the at least one processor is configured to:129025-2652WO01Qualcomm Ref. No. 2501845 WO 82 / 84determine the estimated summation of the error detection integer values based on the modulo summation operation associated with the prime number.

18. The apparatus of claim 15, wherein the at least one processor is further configured to:transmit, to the set of multiple UEs, error detection parameters, wherein the error detection parameters include one or more ofa first number of rows for the redundancy matrix,a second number of columns for the redundancy matrix,the elements of the redundancy matrix,a prime number associated with a modulo summation operation, a first lattice-generating matrix associated with the first set of lattice points associated with the data values, ora second lattice-generating matrix associated with the second set of lattice points associated with the error detection values.

19. An apparatus for wireless communication at a first user equipment (UE), comprising:at least one memory; andat least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor is configured to:transmit, to a network entity, communication information, wherein the communication information includes:one or more data values associated with communication between the first UE and the network entity, andone or more error detection values associated with the one or more data values, wherein the one or more data values are represented as analog values or integer values associated with a first set of lattice points, and the one or more error detection values are represented as analog values or integer values associated with a second set of lattice points; and129025-2652WO01Qualcomm Ref. No. 2501845 WO 83 / 84perform, based on a corrective measure indication from the network entity, a data corrective measure with the network entity, wherein an error on the one or more data values is based on a first over-the-air (OTA) summation of the one or more data values from a set of multiple UEs including the first UE and a second OTA summation of the one or more error detection values from the set of multiple UEs.

20. The apparatus of claim 19, further comprising a transceiver coupled to the at least one processor, wherein to transmit the communication information, the at least one processor is configured to transmit the communication information via the transceiver, wherein the one or more data values are represented as the analog values, and wherein the at least one processor is further configured to:calculate, based on a redundancy matrix, the one or more error detection values based on the one or more data values, wherein the redundancy matrix includes elements of real values.129025-2652WO01

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