Signaling of phase noise inter-carrier interference order for network entity to reduce user equipment phase noise cancellation complexity

Abstract

The present disclosure provides systems, methods, and devices for wireless communication that support signaling of a phase noise inter-carrier interference (ICI) order for a network entity for reducing user equipment (UE) phase noise cancellation complexity. In a first aspect, a method of wireless communication includes obtaining a power spectral density (PSD) measurement of a phase noise mask of a network entity prior to a field deployment. The network entity measures integral residual PSD measurements per candidate phase noise bandwidth size after deployment, and sends these integral residual PSD measurements to the UE. The UE may then estimate phase noise for cancellation from network entity transmissions using the integral residual PSD measurements. Other aspects and features are also claimed and described.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit of U.S. Patent Application No. 18 / 313,890, filed May 8, 2023, entitled “SIGNALING OF NETWORK ENTITIES' PHASE NOISE INTER-CARRIER INTERFERENCE ORDER FOR REDUCING USER EQUIPMENT PHASE NOISE CANCELLATION COMPLEXITY”, the entire contents of which are expressly incorporated herein by reference. Technical Field

[0003] This disclosure relates generally to wireless communication systems, and more specifically to the estimation and cancellation of phase noise of network entities by user equipment (UE). Several features enable and provide improved communication, including signaling for the inter-carrier interference order of phase noise of network entities to reduce the complexity of UE phase noise cancellation. Background Technology

[0004] Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, message sending and receiving, and broadcasting. These wireless networks can be multiple access networks capable of supporting multiple users by sharing available network resources. Such networks can be multiple access networks that support communication for multiple users by sharing available network resources.

[0005] A wireless communication network may include several components. These components may include wireless communication devices, such as a base station (or Node B) that can support communication for multiple User Equipments (UEs). UEs may communicate with the base station via downlinks and uplinks. A downlink (or forward link) refers to the communication link from the base station to the UE, and an uplink (or reverse link) refers to the communication link from the UE to the base station or other network entities. When receiving communication from a serving base station or other network entity, the UE may estimate the phase noise on the communication link to eliminate that noise from the communication.

[0006] Network entities can send data and control information to the UE on the downlink or receive data and control information from the UE on the uplink. On the downlink, transmissions from network entities may encounter interference from transmissions from neighboring network entities or other radio frequency (RF) transmitters. On the uplink, transmissions from the UE may encounter interference from other UEs communicating with neighboring network entities or from uplink transmissions from other RF transmitters. This interference can degrade performance on both the downlink and uplink.

[0007] As the demand for mobile broadband access continues to grow, the likelihood of network interference and congestion is also increasing, with more UEs accessing long-range wireless communication networks and more short-range wireless systems being deployed in communities. Research and development are continuously advancing wireless technologies to not only meet the growing demand for mobile broadband access but also to enhance and improve the user experience of mobile communications. Summary of the Invention

[0008] The following summary outlines some aspects of this disclosure to provide a basic understanding of the techniques discussed. This summary is not an exhaustive overview of all the intended features of this disclosure, nor is it intended to identify key or essential elements of all aspects of this disclosure, nor to define the scope of any or all aspects of this disclosure. The sole purpose of this summary is to present, in a general form, some concepts of one or more aspects of this disclosure as a prelude to the more detailed description that follows.

[0009] In one aspect of this disclosure, a method for wireless communication includes: obtaining a power spectral density (PSD) measurement of a phase noise mask of a network entity; measuring an integral residual PSD measurement corresponding to each of a plurality of phase noise bandwidth sizes within the phase noise mask; and transmitting the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes to each user equipment (UE) served by the network entity.

[0010] In an additional aspect of this disclosure, a method for wireless communication includes: receiving from a serving network entity a communication including an integral residual PSD measurement corresponding to each of a plurality of phase noise bandwidth sizes; calculating a desired error vector magnitude (EVM) for an expected uplink transmission; identifying the desired integral residual PSD measurement from the integral residual PSD measurements associated with the desired EVM; selecting a desired phase noise bandwidth size from the plurality of phase noise bandwidth sizes corresponding to the desired integral residual PSD measurement; using the desired phase noise bandwidth size to calculate an estimated phase noise for the serving network entity; and eliminating the estimated phase noise from the transmission received from the serving network entity.

[0011] In an additional aspect of this disclosure, an apparatus includes: components for obtaining a PSD measurement of a phase noise mask of the network entity; components for measuring an integral residual PSD measurement corresponding to each of a plurality of phase noise bandwidth sizes within the phase noise mask; and components for transmitting the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes to each UE served by the network entity.

[0012] In an additional aspect of this disclosure, an apparatus includes: components for receiving from a serving network entity communications including an integral residual PSD measurement corresponding to each of a plurality of phase noise bandwidth sizes; components for calculating a desired EVM for an expected uplink transmission; components for identifying the desired integral residual PSD measurement from the integral residual PSD measurements associated with the desired EVM; components for selecting a desired phase noise bandwidth size from the plurality of phase noise bandwidth sizes corresponding to the desired integral residual PSD measurement; components for using the desired phase noise bandwidth size to calculate an estimated phase noise for the serving network entity; and components for eliminating the estimated phase noise from the transmissions received from the serving network entity.

[0013] In an additional aspect of this disclosure, a non-transitory computer-readable medium stores instructions that, when executed by a processor, cause the processor to perform operations. These operations include: obtaining a PSD measurement of a phase noise mask of the network entity; measuring an integral residual PSD measurement corresponding to each of a plurality of phase noise bandwidth sizes within the phase noise mask; and transmitting the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes to each UE served by the network entity.

[0014] In an additional aspect of this disclosure, a non-transitory computer-readable medium stores instructions that, when executed by a processor, cause the processor to perform operations. These operations include: receiving from a serving network entity a communication comprising an integral residual PSD measurement corresponding to each of a plurality of phase noise bandwidth sizes; calculating a desired EVM for an expected uplink transmission; identifying the desired integral residual PSD measurement from the integral residual PSD measurements associated with the desired EVM; selecting from the plurality of phase noise bandwidth sizes a desired phase noise bandwidth size corresponding to the desired integral residual PSD measurement; using the desired phase noise bandwidth size to calculate an estimated phase noise for the serving network entity; and eliminating the estimated phase noise from the transmission received from the serving network entity.

[0015] The features and technical advantages of the examples according to this disclosure have been summarized rather extensively above in order to better understand the detailed description below. Additional features and advantages will be described below. The disclosed concepts and specific examples can be readily utilized as the basis for modifying or designing other structures for achieving the same purpose of this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein (both their organization and manner of operation) and the associated advantages will be better understood from the following description when considered in conjunction with the accompanying drawings. Each figure in the drawings is provided for illustrative and descriptive purposes and not as a limitation of the definitions in the claims.

[0016] While aspects and implementations are described herein by way of example, those skilled in the art will understand that additional implementations and use cases may arise in many different arrangements and scenarios. The innovations described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and package arrangements. For example, aspects and / or the use of devices that can be implemented via integrated chip implementations and other non-modular component-based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing devices, medical devices, AI-enabled devices, etc.). While some examples may or may not specifically point to use cases or applications, the applicability of various types of the described innovations is evident. The scope of implementations ranges from chip-level or modular components to non-modular, non-chip-level implementations, and further to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations. In some practical contexts, devices incorporating the described aspects and features may also necessarily include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals necessarily involve multiple components (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.) for analog and digital purposes. The innovations described herein are intended to be implemented in a variety of devices, chip-level components, systems, distributed arrangements, end-user equipment, etc., with different sizes, shapes, and constructions. Attached Figure Description

[0017] A further understanding of the nature and advantages of this disclosure can be achieved by referring to the following figures. In the figures, similar components or features may have the same reference numerals. Furthermore, various components of the same type can be distinguished by adding a dash after the reference numeral and a second numeral for differentiation between similar components. If only the first reference numeral is used in the specification, the description applies to any one of the similar components having the same first reference numeral, regardless of the second reference numeral.

[0018] Figure 1 It is a block diagram illustrating details of an example wireless communication system based on one or more aspects.

[0019] Figure 2 This is a block diagram illustrating examples of base stations and user equipment (UEs) based on one or more aspects.

[0020] Figure 3 This is a block diagram of an example wireless communication system illustrating signaling of the phase noise ICI order of a network entity used to reduce the complexity of UE phase noise cancellation based on one or more aspects.

[0021] Figure 4A This is a flowchart illustrating an example process of signaling for a network entity that reduces the phase noise ICI order of the UE based on support from one or more aspects.

[0022] Figure 4B This is a flowchart illustrating an example process of signaling for a network entity that reduces the phase noise ICI order of the UE based on support from one or more aspects.

[0023] Figures 5A to 5C This is a block diagram illustrating a manufacturing facility, a wireless communication system including a network entity and a UE, and a phase noise mask of the network entity, wherein the network entity and the UE are each configured to support signaling for the phase noise ICI order of the network entity to reduce the complexity of UE phase noise cancellation.

[0024] Figure 6 This is a call flow diagram illustrating communication between a network entity and a UE, each configured according to one or more aspects to support signaling of the phase noise ICI order of the network entity used to reduce the complexity of UE phase noise cancellation.

[0025] Figure 7 This is a block diagram of an example network entity for signaling of phase noise ICI order, which is supported by one or more aspects to reduce the complexity of UE phase noise cancellation.

[0026] Figure 8 This is a block diagram of an example UE for signaling of the phase noise ICI order of a network entity used to reduce the complexity of UE phase noise cancellation based on one or more aspects of support.

[0027] The same reference numerals and names in different figures indicate the same elements. Detailed Implementation

[0028] The specific embodiments described below with reference to the accompanying drawings are intended as descriptions of various configurations and are not intended to limit the scope of this disclosure. Rather, the specific embodiments include specific details for providing a thorough understanding of the subject matter of the invention. It will be apparent to those skilled in the art that these specific details are not necessary in every situation, and in some cases, well-known structures and components are shown in block diagram form for clarity of presentation.

[0029] This disclosure provides systems, apparatus, methods, and computer-readable media that support signaling for the phase noise ICI order of network entities used to reduce the complexity of UE phase noise cancellation. Specific embodiments of the subject matter described herein can be implemented to achieve one or more of the following potential advantages or benefits. In some aspects, this disclosure provides techniques for signaling the phase noise ICI order of network entities used to reduce the complexity of UE phase noise cancellation. By signaling the phase noise ICI of the network entity, the UE can more accurately estimate the phase noise on the channel and therefore more accurately cancel the phase noise from received transmissions. Instead of estimating the phase noise based on the phase noise within the phase noise bandwidth (which ignores the residual phase noise power spectral density (PSD) in the phase noise mask), the aspects described herein use additional signaling of the residual phase noise PSD as part of the phase noise estimation.

[0030] This disclosure relates throughout to providing or participating in licensed shared access between two or more wireless devices in one or more wireless communication systems (also known as wireless communication networks). In various specific implementations, technologies and apparatus can be used in wireless communication networks such as Code Division Multiple Access (CDMA) networks, Time Division Multiple Access (TDMA) networks, Frequency Division Multiple Access (FDMA) networks, Orthogonal FDMA (OFDMA) networks, Single Carrier FDMA (SC-FDMA) networks, LTE networks, GSM networks, fifth-generation (5G) or new radio (NR) networks (sometimes referred to as “5G NR” networks, systems, or devices), and other communication networks. As described herein, the terms “network” and “system” are used interchangeably.

[0031] For clarity, certain aspects of the apparatus and technology may be described below with reference to example 5G NR implementations or in a 5G-centric manner, and 5G terminology may be used as illustrative examples in the sections described below; however, this description is not intended to be limited to 5G applications.

[0032] Furthermore, it should be understood that, in operation, wireless communication networks adapted according to the concepts herein may operate using any combination of licensed or unlicensed spectrum, depending on load and availability. Therefore, it will be apparent to those skilled in the art that the systems, apparatuses, and methods described herein can be applied to other communication systems and applications besides the specific examples provided.

[0033] While aspects and implementations are described herein by way of example, those skilled in the art will understand that additional implementations and use cases may arise in many different arrangements and scenarios. The innovations described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and package arrangements. For example, implementations or uses may be achieved via integrated chip implementations or other devices based on non-modular components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail or purchasing devices, medical devices, AI-enabled devices, etc.). While some examples may or may not specifically point to use cases or applications, the applicability of various types of the described innovations is evident. The scope of implementations can range from chip-level or modular components to non-modular, non-chip-level implementations, and further to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more of the described aspects. In some practical contexts, devices incorporating the described aspects and features may also necessarily include additional components and features for implementing and practicing the claimed and described aspects. The innovations described herein are expected to be implemented in a wide variety of specific implementations of different sizes, shapes and constructions, including both large and small devices, chip-level components, multi-component systems (e.g., radio frequency (RF) chains, communication interfaces, processors), distributed deployments, end-user equipment, etc.

[0034] Figure 1 Examples of wireless communication systems 100 supporting RF component preferences in hybrid beamforming operations at mmWave frequency bands according to one or more aspects of this disclosure are illustrated. Wireless communication system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating under other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.

[0035] Network entity 105 may be distributed across a geographical area to form wireless communication system 100, and may include devices in different forms or with different capabilities. In various examples, network entity 105 may be referred to as a network element, mobility element, radio access network (RAN) node, or network equipment, etc. In some examples, network entity 105 and UE 115 may communicate wirelessly via one or more communication links 125 (e.g., radio frequency (RF) access links).

[0036] UE 115 can be distributed throughout the coverage area 110 of wireless communication system 100, and each UE 115 can be stationary or mobile, or stationary and mobile at different times. UE 115 can be devices in different forms or with different capabilities. Figure 1 Some example UE 115s are illustrated herein. The UE 115 described herein can communicate with various types of devices, such as... Figure 1 Other UEs 115 or network entities 105 shown.

[0037] As described herein, a node in the wireless communication system 100 (which may be referred to as a network node or a wireless node) may be a network entity 105 (e.g., any network entity described herein), a UE 115 (e.g., any UE described herein), a network controller, apparatus, device, computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be UE 115. As another example, a node may be network entity 105.

[0038] In some examples, network entity 105 may communicate with core network 130, communicate with each other, or both. For example, network entity 105 may communicate with core network 130 via one or more backhaul communication links 120 (e.g., according to S1, N2, N3, or other interface protocols). In some examples, network entity 105 may communicate with each other directly (e.g., directly between network entities 105) or indirectly (e.g., via core network 130) via backhaul communication links 120 (e.g., according to X2, Xn, or other interface protocols). In some examples, network entity 105 may communicate with each other via midhaul communication link 162 (e.g., according to midhaul interface protocol) or fronthaul communication link 168 (e.g., according to fronthaul interface protocol) or any combination thereof. Backhaul communication link 120, midhaul communication link 162, or fronthaul communication link 168 may be or include one or more wired links (e.g., electrical links, fiber optic links), one or more wireless links (e.g., radio links, wireless optical links), etc., or various combinations thereof. UE 115 can communicate with the core network 130 via communication link 155.

[0039] One or more network entities in network entity 105 described herein may include or be referred to as base station 140 (e.g., transceiver base station, radio base station, NR base station, access point, radio transceiver, transmit / receive point (TRP), Node B, evolved Node B (eNB), next-generation Node B or gigabit Node B (any of which may be referred to as gNB), 5G NB, next-generation eNB (ng-eNB), home Node B, home evolved Node B or other suitable terms). In some examples, network entity 105 (e.g., base station 140) may be implemented in an aggregated (e.g., monolithic, self-contained) base station architecture that may be configured to utilize a protocol stack physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as base station 140).

[0040] In some examples, network entity 105 may be implemented in a decomposed architecture (e.g., a decomposed base station architecture, a decomposed RAN architecture) that can be configured to utilize protocol stacks physically or logically distributed between two or more network entities 105, such as an Integrated Access Backhaul (IAB) network, an Open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a Virtualized RAN (vRAN) (e.g., a Cloud RAN (C-RAN)). For example, network entity 105 may include one or more of the following: a Central Unit (CU) 160, a Distributed Unit (DU) 165, a Radio Unit (RU) 170, a RAN Intelligent Controller (RIC) 175 (e.g., a near real-time RIC (near RT RIC), a non-real-time RIC (non-RT RIC)), a Service Management and Orchestration (SMO) 180 system, or any combination thereof. RU 170 may also be referred to as a radio headend, an intelligent radio headend, a remote radio headend (RRH), a remote radio unit (RRU), or a transmit-receive point (TRP). One or more components of network entity 105 in a decomposed RAN architecture may be co-located, or one or more components of network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 in a decomposed RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0041] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or any other suitable term, wherein "device" may also be referred to as a unit, station, terminal, or client, etc. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, etc., which may be implemented in a variety of objects such as appliances, vehicles, meters, satellite radios, Global Positioning System (GPS) devices, Global Navigation Satellite System (GNSS) devices, logistics controllers, unmanned aerial vehicles (UAVs), drones, smart energy or security devices, solar panels or solar arrays, etc.

[0042] The UE 115 described herein can communicate with various types of devices, such as other UEs 115 that may sometimes act as relays, as well as network entities 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, relay base stations, etc. Figure 1 As shown.

[0043] UE 115 and network entity 105 can wirelessly communicate with each other over one or more carriers via one or more communication links 125 (e.g., access links). The term "carrier" can refer to a set of RF spectrum resources having a physical layer structure defined for supporting communication link 125.

[0044] Physical channels can be multiplexed on a carrier using various techniques. For example, one or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or hybrid TDM-FDM techniques can be used to multiplex physical control channels and physical data channels on a downlink carrier. The control region (e.g., a control resource set (CORESET)) of a physical control channel can be defined by a set of symbol periods and can extend across the system bandwidth of the carrier or a subset of that bandwidth. One or more control regions (e.g., CORESET) can be configured for a set in UE 115. For example, one or more UEs in UE 115 can monitor or search control regions to obtain control information based on one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a concatenated manner. The aggregation level of control channel candidates can refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space set may include a common search space set configured to transmit control information to multiple UEs 115 and a UE-specific search space set configured to transmit control information to a specific UE among the UEs 115.

[0045] In some examples, UE 115 may be able to communicate directly with other UEs in UE 115 via device-to-device (D2D) communication link 135 (e.g., according to a peer-to-peer (P2P), D2D, or sidelink protocol). In some examples, one or more UEs 115 performing D2D communication in a group may be within the coverage area 110 of network entity 105 (e.g., base station 140, RU 170), which may support various aspects of such D2D communication configured or scheduled by network entity 105. In some examples, one or more UEs 115 in such a group may be outside the coverage area 110 of network entity 105, or may otherwise be unable or not configured to receive transmissions from network entity 105. In some examples, the group of UEs 115 communicating via D2D communication may support a one-to-many (1:M) system in which each UE 115 transmits to each of the other UEs in the group. In some examples, network entity 105 may facilitate the scheduling of resources used for D2D communication. In other examples, D2D communication may be performed between UEs 115 without involving network entity 105.

[0046] In some systems, the D2D communication link 135 may be an example of a communication channel between vehicles (e.g., UE 115), such as a sidelink communication channel. In some examples, vehicles may communicate using vehicle-to-vehicle (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these. Vehicles may signal information related to traffic conditions, signal control, weather, safety, emergencies, or any other information relevant to the V2X system. In some examples, vehicles in a V2X system may communicate with roadside infrastructure such as roadside units, or communicate with the network via one or more network nodes (e.g., network entity 105, base station 140, RU 170) using vehicle-to-network (V2N) communication, or both.

[0047] The wireless communication system 100 can be a packet-based network operating according to a layered protocol stack. In the user plane, communication at the bearer or PDCP layer can be IP-based. The RLC layer can perform packet segmentation and reassembly for transmission over logical channels. The MAC layer can perform priority processing and multiplexing of logical channels to transport channels. The MAC layer can also use error detection, error correction, or both to support retransmission at the MAC layer to improve link efficiency. In the control plane, the RRC protocol layer provides the establishment, configuration, and maintenance of RRC connections between the UE 115 and network entity 105 or core network 130 that support user plane data radio bearers. At the PHY layer, transport channels can be mapped to physical channels.

[0048] UE 115 and network entity 105 can support data retransmission to increase the likelihood of successful data reception. Hybrid Automatic Repeat Request (HARQ) feedback is a technique used to increase the likelihood of correct data reception over communication links (e.g., communication link 125, D2D communication link 135). HARQ may include a combination of error detection (e.g., using Cyclic Redundancy Check (CRC)), forward error correction (FEC), and retransmission (e.g., Automatic Repeat Request (ARQ)). HARQ can improve throughput at the MAC layer under poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, the device may support simultaneous time-slot HARQ feedback, where the device can provide HARQ feedback in a specific time slot for data received in a previous symbol within that time slot. In some other examples, the device can provide HARQ feedback in subsequent time slots or according to a different time interval.

[0049] Figure 2 This is a block diagram illustrating an example of a base station 140 and a UE 115 according to one or more aspects. The base station 140 and UE 115 can be... Figure 1This refers to any network entity and base station within the network entity and base station, as well as one UE within the UE. For restricted association scenarios (as mentioned above), network entity 105 can be a small cell base station, and UE 115 can be UE 115 operating within the service area of ​​the small cell base station. To access the small cell base station, this UE will be included in the small cell base station's list of accessible UEs. Base station 140 can also be some other type of base station. For example... Figure 2 As shown, network entity 105, such as base station 140, may be equipped with antennas 234a to 234t, and UE 115 may be equipped with antennas 252a to 252r for facilitating wireless communication.

[0050] At base station 140, transmitting processor 220 can receive data from data source 212 and control information from controller 240, such as a processor. The control information may be for Physical Broadcast Channel (PBCH), Physical Control Format Indicator Channel (PCFICH), Physical Hybrid ARQ (Automatic Repeat Request) Indicator Channel (PHICH), Physical Downlink Control Channel (PDCCH), Enhanced Physical Downlink Control Channel (EPDCCH), MTC Physical Downlink Control Channel (MPDCCH), etc. The data may be for Physical Downlink Shared Channel (PDSCH), etc. Additionally, transmitting processor 220 can process (e.g., encoding and symbol mapping) the data and control information separately to obtain data symbols and control symbols. Transmitting processor 220 can also generate reference symbols, for example, for primary synchronization signals (PSS) and secondary synchronization signals (SSS), as well as cell-specific reference signals. The transmit (TX) MIMO processor 230 can perform spatial processing (e.g., pre-decoding, where applicable) on data symbols, control symbols, or reference symbols, and can provide an output symbol stream to modulators (MODs) 232a to 232t. For example, spatial processing performed on data symbols, control symbols, or reference symbols may include pre-decoding. Each modulator 232 can (e.g., for OFDM, etc.) process its respective output symbol stream to obtain an output sample stream. Additionally or alternatively, each modulator 232 can process the output sample stream (e.g., perform analog-to-analog conversion, amplification, filtering, and up-conversion) to obtain a downlink signal. The downlink signal from modulators 232a to 232t can be transmitted via antennas 234a to 234t, respectively.

[0051] At UE 115, antennas 252a to 252r can receive downlink signals from base station 140 and can provide the received signals to demodulators (DEMODs) 254a to 254r respectively. Each demodulator 254 can adjust (e.g., filter, amplify, downconvert, and digitize) the corresponding received signal to obtain an input sample. Each demodulator 254 can further process the input sample (e.g., for OFDM, etc.) to obtain a received symbol. MIMO detector 256 can obtain the received symbols from demodulators 254a to 254r, perform MIMO detection on the received symbols where applicable, and provide the detected symbols. Receive processor 258 can process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide the decoded data for UE 115 to data sink 260, and provide the decoded control information to controller 280, such as a processor.

[0052] On the uplink, at UE 115, the transmitting processor 264 can receive and process data from data source 262 (e.g., for the Physical Uplink Shared Channel (PUSCH)) and control information from controller 280 (e.g., for the Physical Uplink Control Channel (PUCCH)). Additionally, the transmitting processor 264 can also generate reference symbols for reference signals. Symbols from the transmitting processor 264 can be pre-decoded by the TX MIMO processor 266 (where applicable), further processed by modulators 254a to 254r (e.g., for SC-FDM, etc.), and transmitted to network entity 105. At network entity 105, uplink signals from UE 115 can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 where applicable, and further processed by receiving processor 238 to obtain the decoded data and control information transmitted by UE 115. The receiver processor 238 can provide the decoded data to the data sink 239 and the decoded control information to the controller 240.

[0053] Controllers 240 and 280 can respectively direct operations at base station 140 and UE 115. Controller 240 or other processors and modules at base station 140 or controller 280 or other processors and modules at UE 115 can perform or direct the execution of various processes used in the techniques described herein, such as performing or directing... Figure 4A and Figure 4B The execution illustrated herein, or other processes used in the techniques described herein. Memory 242 and 282 may store data and program code for base station 140 and UE 115, respectively. Scheduler 244 may schedule the UE to perform downlink or uplink data transmission.

[0054] Network entity phase noise can significantly impair the RF channel handled by the UE in downlink communications from network entities. The phase noise impairment can become more severe as the carrier frequency increases (e.g., sub6 => mmW => subTHz). Network entities typically calibrate phase noise to achieve reception of traditional Quadrature Amplitude Modulation (QAM) (up to 256). However, next-generation radio access technologies (e.g., 5G, 6G, XG, etc.) may move towards modulation techniques known as “Ultra-QAM” or 4K QAM or even 16K QAM. To demodulate such high-order constellations, a very high signal-to-noise ratio (SNR) is required. Therefore, if the phase noise impairment problem remains unaddressed, it can limit the noise floor.

[0055] Next-generation advanced UE receivers can estimate phase noise processes and eliminate them from transmissions received from serving network entities. In this advanced receiver, phase noise cancellation can be performed regardless of the supported phase noise mask. The phase noise mask represents the aggregated effect of phase noise over a specific bandwidth, which can be unrestricted. The cancellation process involves the UE first estimating, for example, the phase noise samples experienced on pilot signals from network entities, and then removing this estimated phase noise from any data received from network entities (e.g., PDSCH).

[0056] During the estimation process, the UE assumes a typical phase noise bandwidth, usually represented by subcarriers, within the bandwidth of the phase noise mask, and estimates the number of subcarriers within the assumed bandwidth. Because the phase mask bandwidth can be unlimited, the UE phase noise estimation can be improved as the assumed bandwidth expands. However, the phase noise mask can typically attenuate at higher frequencies. Due to this attenuation at higher frequencies, including these higher frequencies in the phase noise mask may have little impact on the UE estimation quality. Additionally, including too many parameters in the estimation calculation can impair the UE estimation accuracy and further increase the power consumption, complexity, and latency of the estimation and correction process.

[0057] Various aspects of this disclosure address these problems in phase noise estimation by sharing network phase noise bandwidth information with a served UE capable of estimation and cancellation. A network entity can share a table of predicted integral residual phase noise power spectral density (PSD) for each of several proposed phase noise bandwidth sizes. Therefore, the UE can select the phase noise bandwidth size to apply based on information received from the network entity, according to the desired SNR used to demodulate the signal, avoiding excessive power consumption, latency, and mismatch modeling errors.

[0058] Figure 3This is a block diagram of an example wireless communication system 30 that supports signaling of the phase noise ICI order of a network entity for reducing the complexity of UE phase noise cancellation based on one or more aspects. In some examples, wireless communication system 30 may implement aspects of wireless network 100. Wireless communication system 30 includes UE 115 and network entity 105. Although one UE 115 and one network entity 105 are illustrated, in some other specific implementations, wireless communication system 30 may typically include multiple UEs 115 and may include more than one network entity 105.

[0059] Network entity 105 may include various components (such as structural components, hardware components) for performing one or more functions described herein. For example, these components may include one or more processors 352 (hereinafter collectively referred to as "processor 352"), one or more memory devices 354 (hereinafter collectively referred to as "memory 354"), one or more transmitters 356 (hereinafter collectively referred to as "transmitter 356"), and one or more receivers 358 (hereinafter collectively referred to as "receiver 358"). Processor 352 may be configured to execute instructions stored in memory 354 to perform the operations described herein. In some specific implementations, processor 352 includes or corresponds to one or more of receive processor 238, transmit processor 220, and controller 240, and memory 354 includes or corresponds to memory 242.

[0060] Memory 354 includes, or is configured to store, a PSD 360 of the PN mask, measurement logic 361, and an integral residual PNPSD table 362. During the manufacturing and testing process, prior to deployment of network entity 105, the instrument measures the PSD of the PN mask of network entity 105. This measurement information is then stored at the PSD 360 of the PN mask prior to deployment. Measurement logic 361 includes code and instructions that, when executed under the control of processor 352 (referred herein to as the “execution environment” of measurement logic 361), implement the characteristics and functions for measuring various elements at network entity 105. One such element to be measured is the integral residual phase noise (PN) PSD for a given phase noise bandwidth. This integral residual PN PSD may represent the ICI order at network entity 105. Network entity 105 can measure the integral residual phase noise PSD for multiple candidate phase noise bandwidths within the execution environment of measurement logic 361. Under the control of the processor 352, the network entity 105 can store each measured integral residual phase noise PSD in a table indexed by the corresponding phase noise bandwidth, as the integral residual PN PSD table 362.

[0061] Transmitter 356 is configured to transmit reference signals, synchronization signals, control information, and data to one or more other devices, and receiver 358 is configured to receive reference signals, control information, and data from one or more other devices. For example, transmitter 356 may transmit signaling, control information, and data to UE 115, and receiver 358 may receive signaling, control information, and data from the UE. In some implementations, transmitter 356 and receiver 358 may be integrated into one or more transceivers. Additionally or alternatively, transmitter 356 or receiver 358 may include or correspond to a reference signal. Figure 2 One or more components of the described network entity 105.

[0062] Under the control of the processor 352, the network entity 105 may send a control message (message 370) to the UE 115, which includes an integral residual phase noise PSD table from the integral residual PN PSD table 362.

[0063] UE 115 may include various components (such as architecture, hardware components) for performing one or more of the functions described herein. For example, these components may include one or more processors 302 (hereinafter collectively referred to as “processor 302”), one or more memory devices 304 (hereinafter collectively referred to as “memory 304”), one or more transmitters 316 (hereinafter collectively referred to as “transmitter 316”), and one or more receivers 318 (hereinafter collectively referred to as “receiver 318”). Processor 302 may be configured to execute instructions stored in memory 304 to perform the operations described herein. In some specific implementations, processor 302 includes or corresponds to one or more of receive processor 258, transmit processor 264, and controller 280, and memory 304 includes or corresponds to memory 282.

[0064] Memory 304 includes or is configured to store an integral residual PN PSD table 305, EVM logic 306, and PN estimation logic 307. The integral residual PN PSD table 305 includes an integral residual phase noise PSD table received from network entity 105. This table is indexed according to the corresponding phase noise bandwidth expressed in terms of subcarriers, frequencies, etc. When executed by processor 302, EVM logic 306 implements the functionality for UE 115 to determine the desired EVM for a specific transmission or MCS or uplink transmission (such as message 380), and then selects a phase noise bandwidth from the integral residual PN PSD table 305, in which the corresponding integral residual phase noise PSD will be considered negligible relative to the desired EVM. PN estimation logic 307, when executed by processor 302, implements the functionality for UE 115 to estimate the phase noise of a given transmission and eliminate the phase noise from that transmission. For example, when network entity 105 sends data in message 371, the estimated phase noise determined within the execution environment of PN estimation logic 307 is further eliminated from message 371.

[0065] Transmitter 316 is configured to transmit reference signals, control information, and data to one or more other devices, and receiver 318 is configured to receive reference signals, synchronization signals, control information, and data from one or more other devices. For example, transmitter 316 may transmit signaling, control information, and data to base station 105, and receiver 318 may receive signaling, control information, and data from the base station. In some implementations, transmitter 316 and receiver 318 may be integrated into one or more transceivers. Additionally or alternatively, transmitter 316 or receiver 318 may include or correspond to a reference signal. Figure 2 One or more components of the described UE 115.

[0066] In some specific implementations, the wireless communication system 30 implements a 5G NR network. For example, the wireless communication system 30 may include multiple 5G-capable UEs 115 and multiple 5G-capable network entities 105, such as UEs, network entities, or base stations configured to operate according to 5G NR network protocols, such as 5G NR network protocols defined by 3GPP.

[0067] During operation of the wireless communication system 30, network entity 105 determines a phase noise PSD table within the execution environment of measurement logic 361 and transmits this table from the integral residual PN PSD table 362 to UE 115 via message 370. UE 115 receives the table and stores it in the integral residual PN PSD table in memory 304. UE 115 can use the integral PN PSD table 362 to calculate the desired EVM and select a phase noise bandwidth within the execution environment of EVM logic 306. UE 115 can then use the selected phase noise bandwidth to estimate the phase noise and then eliminate the estimated phase noise from transmissions (such as message 371) from network entity 105.

[0068] For reference Figure 3 As described herein, this disclosure provides signaling techniques for reducing the phase noise ICI order of network entities to decrease the complexity of UE phase noise cancellation. By signaling the phase noise ICI of network entities, the UE can more accurately estimate the phase noise on the channel and thus more accurately cancel phase noise from received transmissions. Instead of estimating phase noise based on phase noise within the phase noise bandwidth (which ignores the residual phase noise power spectral density (PSD) in the phase noise mask), the aspects described herein use additional signaling of the residual phase noise PSD as part of the phase noise estimation.

[0069] Figure 4A This is a flowchart illustrating an example process 40 of signaling for a network entity that supports one or more aspects to reduce the complexity of UE phase noise cancellation, specifically the phase noise ICI order. The operation of process 40 can be performed by a network entity (such as those mentioned above). Figures 1 to 3 The network entity 105 or base station 140 described above, or as referenced above. Figure 7 The network entity 105 described is executed. For example, the example operation of procedure 40 enables network entity 105 to support signaling for the phase noise ICI order of network entities used to reduce the complexity of UE phase noise cancellation.

[0070] At box 400, the network entity obtains a PSD measurement of the network entity's phase noise mask. The network entity can obtain the PSD measurement during the manufacturing and testing process, prior to field deployment. Within this process, instruments such as spectrum analyzers can measure and store the PSD measurement before deployment.

[0071] At box 401, the network entity measures the integrated residual PSD corresponding to each of the multiple phase noise bandwidth sizes within the phase noise mask. When communicating with the UE or at the start of communication with the UE, the network entity can measure the integrated residual phase noise PSD on a per-phase noise bandwidth basis. For each such integrated residual phase noise PSD, the UE creates a table indexed by the corresponding phase noise bandwidth.

[0072] At box 402, the network entity sends an integrated residual phase noise (PSD) measurement corresponding to each of a plurality of phase noise bandwidth sizes to each UE served by the network entity. The network entity may send the integrated residual phase noise PSD table to the UE in control signals such as MAC layer or RRC layer signaling.

[0073] Figure 4B This is a flowchart illustrating example procedure 41 of signaling for a network entity used to reduce the complexity of UE phase noise cancellation based on one or more aspects. The operation of procedure 41 can be performed by the UE (such as the one referenced above). Figures 1 to 3 The described UE 115 or reference Figure 8 The UE 115 described herein performs the following. For example, the example operation of procedure 41 (also referred to as the “box”) enables the UE 115 to support signaling for the phase noise ICI order of network entities used to reduce the complexity of UE phase noise cancellation.

[0074] At box 410, the UE receives from the serving network entity communication including integrated residual PSD measurements corresponding to each of a plurality of phase noise bandwidth sizes. The integrated residual PSD measurements may appear in the form of a table of integrated residual phase noise PSD measurements indexed by the corresponding phase noise bandwidth that generated the residual measurements.

[0075] At box 411, the UE calculates the expected EVM for anticipated uplink transmissions. The UE may calculate the expected EVM for a specific MCS or a table or relation containing that expected EVM. The UE may then determine the EVM based on the anticipated MCS or transmissions.

[0076] At box 412, the UE identifies the desired integral residual PSD measurement from the integral residual PSD measurements associated with the desired EVM. The UE identifies the desired integral residual PSD measurement by comparing the desired EVM with integral residual PSD measurements from network entities in a table. When an integral residual PSD measurement in the table appears negligible compared to the desired EVM, the UE identifies that integral residual PSD measurement as the desired measurement.

[0077] At box 413, the UE selects the desired phase noise bandwidth size corresponding to the desired integral residual PSD measurement from a plurality of phase noise bandwidth sizes. Within the table, the phase noise bandwidth is indexed to the integral residual PSD measurement. Therefore, when the desired integral residual PSD measurement is determined, the UE selects the phase noise bandwidth corresponding to the desired integral residual PSD measurement.

[0078] At box 414, the UE uses the expected phase noise bandwidth to calculate the estimated phase noise of the serving network entity. The expected phase noise bandwidth is used in the phase noise estimation process. Because the expected phase noise bandwidth from this table includes consideration of the integral residual phase noise PSD, the UE's phase noise estimation can be more accurate.

[0079] At box 415, the UE eliminates the estimated phase noise from transmissions received from the serving network entity. Once the estimated phase noise is determined using adaptation of the integral residual phase noise PSD associated with the desired EVM, the UE can eliminate the phase noise from data transmissions received from the network entity.

[0080] Figures 5A to 5C This is a block diagram illustrating, respectively, a manufacturing facility 500, a wireless communication system 50 including network entity 105 and UE 115, and a phase noise mask of network entity 105, wherein network entity 105 and UE 115 are each configured to support signaling for the phase noise ICI order of the network entity used to reduce the complexity of UE phase noise cancellation. Figure 5A The diagram illustrates the manufacturing and testing lifecycle of network entity 105. During the manufacturing and testing process, the transmit phase noise mask of network entity 105 can be measured at manufacturing facility 500. The manufacturer can use spectrum analyzer 501 to measure the transmit phase noise characteristics of network entity 105 offline and in the factory setup of manufacturing facility 500. Spectrum analyzer 501 generates a PSD of the phase noise mask of network entity 105. The PSD can represent the distribution of average power in the frequency domain. This information is then stored at network entity 105 before field deployment.

[0081] exist Figure 5B In this context, network entity 105 is deployed within wireless communication system 50. When serving a UE (such as UE 115), network entity 105 can transform a predetermined PSD to represent the power distribution on the subcarriers instead of the frequency (Hz) of a selected set of parameters relative to the network operation. For example, in communication operation at a frequency of 6 GHz with parameter set = 1, the subcarrier spacing (SCS) is 30 kHz. Assuming such operation, network entity 105 can use the transformed PSD to represent a phase noise mask, such as... Figure 5C Phase noise mask 51.

[0082] Network entity 105 can measure the integrated residual phase noise PSD outside the phase noise bandwidth for multiple given phase noise bandwidth sizes. For example, for phase noise mask 51, the phase noise bandwidth size is approximately 102 subcarriers. Correction region 503 represents the portion of phase noise mask 51 within the phase noise bandwidth, which can be corrected by UE 115 through phase noise estimation. However, the phase noise PSD in residual phase noise region 504 is ignored by UE 115 or assumed to be zero. Therefore, the phase noise estimation of UE 115 will typically include errors because the phase noise PSD within residual phase noise region 504 is ignored. To address this estimation error at UE 115, network entity 105 measures the integrated residual phase noise PSD within residual phase noise region 504 on a per-phase noise bandwidth basis and transmits the integrated residual phase noise PSD measurement 502 to UE 115. Network entity 105 will measure the residual phase noise PSD within the residual phase noise region 504, measure a new residual phase noise PSD for the next assumed phase noise bandwidth (not shown), and so on, and signal these measurements of the residual phase noise PSD for each phase noise bandwidth to UE 115 in the integrated residual phase noise measurement 502. Network entity 105 may transmit this information in a residual phase noise PSD table indexed by the corresponding phase noise bandwidth. In one example implementation, network entity 105 may transmit a table (such as Table 1 below) at the Media Access Control (MAC) or RRC level at the start of communication with each UE (such as UE 115) capable of supporting the transmission of phase noise estimation.

[0083]

[0084] Table 1

[0085] UE 115 can then use an integral residual phase noise (PSD) table corresponding to the phase noise bandwidth when estimating phase noise for the communication channel. The UE (such as UE 115) can maintain a table or relation of sufficient error vector magnitude (EVM) per modulation decoding scheme (MCS). EVM is a modulation quality metric that represents a measurement of the deviation between the actually detected constellation points and their ideal positions in the signal constellation diagram. EVM can be a comprehensive measure of transmission quality because it reflects signal defects affecting the amplitude or phase of the transmitted symbols. EVM also informs UE 115 of the phase noise bandwidth it can handle when correcting phase noise. The table or relation of EVM to MCS provides sufficient EVM values ​​to achieve acceptable demodulation at the corresponding MCS. Therefore, during phase noise estimation, UE 115 can first determine the expected EVM for a specific MCS. Based on this expected EVM, UE 115 will select the corresponding phase noise bandwidth. UE 115 uses this phase noise bandwidth to correspond to the number of subcarriers in Table 1 to make an estimate based on the corresponding integral residual phase noise PSD.

[0086] It should be noted that UE 115 may determine in some scenarios that it cannot correct the phase noise within the corresponding phase noise bandwidth for the desired EVM. In such scenarios, UE 115 may signal to network entity 105 that it cannot correct the phase noise within the corresponding phase noise bandwidth, and further notify network entity 105 of the maximum phase noise bandwidth that the UE can correct. In response, network entity 105 may configure a different or lower MCS corresponding to the phase noise correction capability of UE 115.

[0087] In a specific implementation example, UE 115 can determine the desired EVM according to the following formula:

[0088] dB(1)

[0089] in This indicates the number of undecoded bits per symbol, where -3 Provides an upper bound that is approximately equivalent to Shannon's capacity, and It depends on the protection interval required by the system. If the signal is 8 bits (e.g., 256 QAM), the expected EVM will be -28 dB (e.g., -[3(8) + 4] dB). By comparing this expected EVM with the integral residual phase noise in Table 1, UE115 can select 13 subcarriers for phase noise estimation because the corresponding -35.3 dB integral residual phase noise PSD will be considered negligible compared to the expected EVM, i.e., -28 dB. Similarly, if the signal is 14 bits (e.g., 16384 QAM), the expected EVM will be -46 dB (e.g., -[3(14) + 4] dB). By comparing the expected EVM with the integral residual phase noise PSD in Table 1, UE 115 can select 102 subcarriers (-48.2dB vs. -46dB) for phase noise estimation. This is because the integral residual phase noise PSD used for the lower phase noise bandwidth may not be negligible compared to the expected EVM, i.e., -46dB, and could lead to erroneous demodulation. These selections save power consumption and latency while still ensuring successful demodulation.

[0090] Figure 6 This is a call flow diagram 60 illustrating communication between network entity 105 and UE 115, each configured according to one or more aspects to support signaling for reducing the complexity of UE phase noise cancellation (ICI). Time 600 indicates the deployment date of network entity 105. Prior to deployment at 600, while network entity 105 is in the manufacturing and testing phase, at time 601, an instrument such as a spectrum analyzer can measure the power spectral density (PSD) of the phase noise mask of network entity 105. This PSD can then be stored at network entity 105.

[0091] After deployment at 600, when network entity 105 is communicating with UE 115 or initiating communication, network entity 105 measures the integrated residual phase noise (PSD) on a per-phase noise bandwidth basis at 602. Part of this measurement process may include creating an integrated residual phase noise PSD table indexed by the number of subcarriers. At 603, network entity 105 may send this table to UE 115. UE 115 may begin the phase noise estimation process by calculating the desired EVM for a given MCS at 604. UE 115 may then use the integrated residual phase noise PSD table at 605 to select a specific phase noise bandwidth size (expressed in terms of subcarriers, frequencies, etc.) associated with the desired EVM. This selection is driven by comparing the desired EVM with the integrated residual phase noise PSD to determine whether the integrated residual phase noise PSD is negligible compared to the desired EVM. UE 115 selects the corresponding phase noise bandwidth size corresponding to the integrated residual phase noise PSD that is negligible considering the desired EVM. Once UE 115 identifies the phase noise bandwidth size, it can perform phase noise estimation. At 607, when network entity 105 transmits data, such as via PDSCH, UE 115 will use phase noise estimation at 608 to eliminate estimated phase noise from the network entity's transmission. This estimated phase noise is calculated using the integral residual phase noise PSD provided by network entity 105.

[0092] It should be noted that UE115 can determine that the phase noise PSD is negligible when it adds less than a specific number of decibels to the overall noise of the system. The overall noise experienced by a UE (such as UE 115) includes thermal noise and any radio frequency (RF) impairment noise such as phase noise PSD. UE 115 determines that the phase noise is negligible based on the following relationship:

[0093] (2)

[0094] in This represents the phase noise PSD, and This represents thermal noise. Therefore, phase noise does not add significant noise to the overall noise, making the overall noise essentially thermal noise. In one example, the thermal noise is -28 dB, and the phase noise PSD is -35.2 dB. -35.2 dB + -28 dB = -27.24 dB -28dB. Full decibel addition will be performed according to the following formula:

[0095] (3)

[0096] Ultimately, depending on the specific system requirements, when the phase noise PSD adds less than a few dB (e.g., 1 dB, 2 dB, etc.) to the overall noise value, UE 115 will consider the phase noise PSD to be negligible.

[0097] Figure 7 This is a block diagram of an example base station 105 that supports signaling of the phase noise ICI order of a network entity for reducing the complexity of UE phase noise cancellation based on one or more aspects. Base station 105 can be configured to perform operations including referencing Figure 4A The process 40 is described in the box. In some specific implementations, base station 105 includes a reference... Figures 1 to 3 The base station 105 is shown and described in terms of its structure, hardware, and components. For example, base station 105 may include a controller 240 that operates to execute logical or computer instructions stored in memory 242, and components that control base station 105 and provide the characteristics and functionality of base station 105. Base station 105 transmits and receives signals via wireless radio components 700a-t and antennas 234a-t under the control of controller 240. Wireless radio components 700a-t include various components and hardware, such as those shown in… Figure 2 The example for base station 105 includes modulator and demodulator 232a-t, transmitter processor 220, TX MIMO processor 230, MIMO detector 236, and receiver processor 238.

[0098] As shown in the figure, memory 242 may include a PSD 701 for a phase noise mask, measurement logic 702, and an integral residual PNPSD table 703. During the manufacturing and testing process, before deploying network entity 105, the instrument measures the PSD of the PN mask of network entity 105. This measurement information is then stored at the PSD 701 of the phase noise mask prior to deployment. Measurement logic 702 includes code and instructions that, when executed under the control of processor 240, implement the characteristics and functions for measuring various elements at network entity 105. One such element to be measured is the integral residual phase noise PSD for a given phase noise bandwidth. Network entity 105 can measure the integral residual phase noise PSD for multiple candidate phase noise bandwidths within the execution environment of measurement logic 702. Under the control of processor 240, network entity 105 can store each measured integral residual phase noise PSD in a table indexed by the corresponding phase noise bandwidth, as the integral residual PN PSD table 703. Network entity 105 can obtain data from one or more UEs (such as...). Figures 1 to 3 UE 115 or Figure 8 UE 115) receives signals or sends signals to one or more UEs.

[0099] Figure 8This is a block diagram of an example UE 115, which supports signaling of the phase noise ICI order of network entities for reducing the complexity of UE phase noise cancellation based on one or more aspects. UE 115 can be configured to perform operations, including referencing... Figure 4B The described process is a box. In some specific implementations, UE 115 includes references. Figures 1 to 3 The UE 115 shows and describes its structure, hardware, and components. For example, UE 115 includes a controller 280 that operates to execute logical or computer instructions stored in memory 282, and components that control UE 115 and provide the features and functionality of UE 115. Under the control of controller 280, UE 115 transmits and receives signals via wireless radio components 800a-r and antennas 252a-r. Wireless radio components 800a-r include various components and hardware, such as… Figure 2 The components illustrated for UE 115 include modulators and demodulators 254a-r, MIMO detector 256, receiver processor 258, transmitter processor 264, and TX MIMO processor 266.

[0100] As shown in the figure, memory 282 may include an integral residual phase noise (PSD) table 801, EVM logic 802, and phase noise estimation logic 803. The integral residual phase noise (PSD) table 801 includes an integral residual phase noise (PSD) table received from network entity 105. This table is indexed according to the corresponding phase noise bandwidth expressed in terms of subcarriers, frequencies, etc. When executed by processor 280, EVM logic 802 implements the functionality for UE 115 to determine the desired EVM for a specific transmission, MCS, or uplink transmission, and then selects a phase noise bandwidth from the integral residual phase noise (PSD) table 801, in which the corresponding integral residual phase noise (PSD) is considered negligible relative to the desired EVM. When executed by processor 280, phase noise estimation logic 803 implements the functionality for UE 115 to estimate the phase noise of a given transmission and eliminate the phase noise from that transmission. For example, when network entity 105 transmits data to UE 115, the estimated phase noise determined within the execution environment of phase noise estimation logic 803 is further eliminated from the transmitted data. UE 115 can receive data from one or more network entities such as Figures 1 to 3 Network 105 or such Figure 7 The illustrated network entity 105 receives signals or sends signals to one or more network entities.

[0101] Note that this is for reference only. Figures 4A to 4B One or more boxes (or operations) described may be combined with one or more boxes (or operations) described in another figure in the reference diagram. For example, Figure 4AOne or more boxes (or operations) can be connected with Figure 5B A combination of one or more boxes (or operations). For example, with... Figure 4B One or more associated boxes can be connected with and Figure 6 A group of one or more related boxes. For example, with... Figure 4A and Figure 4B One or more associated boxes can be connected with and Figures 1 to 3 A combination of one or more related boxes (or operations). Additionally or alternatively, see above for reference. Figures 1 to 3 One or more operations described can be compared with the reference Figure 7 or Figure 8 The described combination of one or more operations.

[0102] In one or more aspects, the technology for signaling to support the phase noise ICI order of a network entity used to reduce the complexity of UE phase noise cancellation may include additional aspects, such as any single aspect or any combination of aspects described below or in conjunction with one or more other processes or devices described elsewhere herein. In a first aspect, the signaling supporting the phase noise ICI order of a network entity used to reduce the complexity of UE phase noise cancellation may include an apparatus configured to: obtain a PSD measurement of a phase noise mask of the network entity; measure an integral residual PSD measurement corresponding to each of a plurality of phase noise bandwidth sizes within the phase noise mask; and transmit the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes to each UE served by the network entity.

[0103] Additionally, the apparatus may perform or operate according to one or more aspects described below. In some embodiments, the apparatus includes a wireless device, such as a base station. In some embodiments, the apparatus may include at least one processor and memory coupled to the processor. The processor may be configured to perform the operations described herein with respect to the apparatus. In some other embodiments, the apparatus may include a non-transitory computer-readable medium having program code recorded thereon, and the program code may be executable by a computer to cause the computer to perform the operations described herein with reference to the apparatus. In some embodiments, the apparatus may include one or more components configured to perform the operations described herein. In some embodiments, a method of wireless communication may include one or more operations described herein with reference to the apparatus.

[0104] In a second aspect, either alone or in combination with the first aspect, the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes is transmitted in a table, wherein the plurality of phase noise bandwidth sizes are represented as subcarriers indexed for the corresponding integral residual PSD measurement.

[0105] In a third aspect, either alone or in combination with one or more of the first or second aspects, the at least one processor operable to enable the network entity to transmit is operable to enable the network entity to: transmit, at the start of communication with each UE, via one of a MAC CE or RRC signal, the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes.

[0106] A fourth aspect configured for wireless communication performed by a network entity may include obtaining a PSD measurement of a phase noise mask of the network entity; measuring an integral residual PSD measurement corresponding to each of a plurality of phase noise bandwidth sizes within the phase noise mask; and transmitting the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes to each UE served by the network entity.

[0107] In the fifth aspect, either alone or in combination with the fourth aspect, the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes is transmitted in a table, in which the plurality of phase noise bandwidth sizes are represented as subcarriers indexed to the corresponding integral residual PSD measurement.

[0108] In the sixth aspect, either alone or in combination with one or more of the fourth or fifth aspects, the transmission includes: at the start of communication with each UE, transmitting to each UE via one of a MAC CE or RRC signal the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes.

[0109] The seventh aspect configured for wireless communication by a network entity may include components for obtaining a PSD measurement of a phase noise mask of the network entity; components for measuring an integral residual PSD measurement corresponding to each of a plurality of phase noise bandwidth sizes within the phase noise mask; and components for transmitting the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes to each UE served by the network entity.

[0110] In the eighth aspect, either alone or in combination with the seventh aspect, the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes is transmitted in a table, in which the plurality of phase noise bandwidth sizes are represented as subcarriers indexed to the corresponding integral residual PSD measurement.

[0111] In the ninth aspect, alone or in combination with one or more of the seventh or eighth aspects, the component for transmission includes: a component for transmitting, at the start of communication with each UE, the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes via one of a MAC CE or RRC signal.

[0112] A tenth aspect may include a non-transitory computer-readable medium storing instructions. When executed by a processor in a network entity, the instructions cause the processor to perform operations including: obtaining a PSD measurement of a phase noise mask of the network entity; measuring an integral residual PSD measurement corresponding to each of a plurality of phase noise bandwidth sizes within the phase noise mask; and transmitting the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes to each UE served by the network entity.

[0113] In the eleventh aspect, either alone or in combination with the tenth aspect, the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes is transmitted in a table, in which the plurality of phase noise bandwidth sizes are represented as subcarriers indexed for the corresponding integral residual PSD measurement.

[0114] In the twelfth aspect, either alone or in combination with one or more of the tenth or eleventh aspects, the transmission includes: transmitting, at the start of communication with each UE, the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes via one of a MAC CE or RRC signal.

[0115] In one or more aspects, the signaling techniques for supporting the phase noise ICI order of a network entity used to reduce the complexity of UE phase noise cancellation may include additional aspects, such as any single aspect or any combination of aspects described below or in conjunction with one or more other processes or devices described elsewhere herein. In a thirteenth aspect, the signaling for supporting the phase noise ICI order of a network entity used to reduce the complexity of UE phase noise cancellation may include an apparatus configured to: receive from a serving network entity communications including integrated residual PSD measurements corresponding to each of a plurality of phase noise bandwidth sizes; calculate a desired EVM for an expected uplink transmission; identify the desired integrated residual PSD measurement from the integrated residual PSD measurements associated with the desired EVM; select from the plurality of phase noise bandwidth sizes a desired phase noise bandwidth size corresponding to the desired integrated residual PSD measurement; use the desired phase noise bandwidth size to calculate an estimated phase noise of the serving network entity; and cancel the estimated phase noise from transmissions received from the serving network entity.

[0116] Additionally, the device may perform or operate according to one or more aspects described below. In some embodiments, the device includes a wireless device, such as a UE. In some embodiments, the device may include at least one processor and memory coupled to the processor. The processor may be configured to perform the operations described herein with respect to the device. In some other embodiments, the device may include a non-transitory computer-readable medium having program code recorded thereon, and the program code may be executable by a computer to cause the computer to perform the operations described herein with reference to the device. In some embodiments, the device may include one or more components configured to perform the operations described herein. In some embodiments, a method of wireless communication may include one or more operations described herein with reference to the device.

[0117] In the fourteenth aspect, alone or in combination with the thirteenth aspect, the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes is received in a table, in which the plurality of phase noise bandwidth sizes are represented as subcarriers indexed to the corresponding integral residual PSD measurement.

[0118] In the fifteenth aspect, alone or in combination with one or more of the thirteenth or fourteenth aspects, wherein the at least one processor operable to enable the UE to receive is operable to enable the UE to: receive, at the start of communication with the network entity, via one of a MAC CE or RRC signal, the communication including the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes.

[0119] A sixteenth aspect of the wireless communication configured for performance by the UE may include receiving from a serving network entity a communication comprising an integral residual PSD measurement corresponding to each of a plurality of phase noise bandwidth sizes; calculating a desired EVM for an expected uplink transmission; identifying the desired integral residual PSD measurement from the integral residual PSD measurements associated with the desired EVM; selecting a desired phase noise bandwidth size from the plurality of phase noise bandwidth sizes corresponding to the desired integral residual PSD measurement; using the desired phase noise bandwidth size to calculate an estimated phase noise for the serving network entity; and eliminating the estimated phase noise from transmissions received from the serving network entity.

[0120] In the seventeenth aspect, either alone or in combination with the sixteenth aspect, the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes is received in a table, wherein the plurality of phase noise bandwidth sizes are represented as subcarriers indexed for the corresponding integral residual PSD measurement.

[0121] In the eighteenth aspect, alone or in combination with one or more of the sixteenth or seventeenth aspects, the receiving includes: receiving, at the start of communication with the network entity, the communication including the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes via one of a MAC CE or RRC signal.

[0122] A nineteenth aspect configured for wireless communication by a UE may include components for receiving from a serving network entity a communication including an integral residual PSD measurement corresponding to each of a plurality of phase noise bandwidth sizes; components for calculating a desired EVM for an expected uplink transmission; components for identifying the desired integral residual PSD measurement from the integral residual PSD measurements associated with the desired EVM; components for selecting a desired phase noise bandwidth size corresponding to the desired integral residual PSD measurement from the plurality of phase noise bandwidth sizes; components for calculating an estimated phase noise of the serving network entity using the desired phase noise bandwidth size; and components for eliminating the estimated phase noise from transmissions received from the serving network entity.

[0123] In the twentieth aspect, either alone or in combination with the nineteenth aspect, the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes is received in a table, wherein the plurality of phase noise bandwidth sizes are represented as subcarriers indexed for the corresponding integral residual PSD measurement.

[0124] In the twenty-first aspect, alone or in combination with one or more of the nineteenth or twentieth aspects, the means for receiving includes means for receiving, at the start of communication with the network entity, the communication including the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes via one of a MAC CE or RRC signal.

[0125] A twenty-second aspect may include a non-transitory computer-readable medium storing instructions. When executed by a processor in a UE, the instructions cause the processor to perform operations including: receiving from a serving network entity communication including an integral residual PSD measurement corresponding to each of a plurality of phase noise bandwidth sizes; calculating a desired EVM for an expected uplink transmission; identifying the desired integral residual PSD measurement from the integral residual PSD measurements associated with the desired EVM; selecting a desired phase noise bandwidth size from the plurality of phase noise bandwidth sizes corresponding to the desired integral residual PSD measurement; using the desired phase noise bandwidth size to calculate an estimated phase noise for the serving network entity; and eliminating the estimated phase noise from transmissions received from the serving network entity.

[0126] In the twenty-third aspect, either alone or in combination with the twenty-second aspect, the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes is received in a table, in which the plurality of phase noise bandwidth sizes are represented as subcarriers indexed for the corresponding integral residual PSD measurement.

[0127] In the twenty-fourth aspect, either alone or in combination with one or more of the twenty-second or twenty-third aspects, the receiving includes: receiving, at the start of communication with the network entity, the communication including the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes via one of a MAC CE or RRC signal.

[0128] Those skilled in the art will understand that information and signals can be represented using any of a variety of different techniques and skills. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or optical particles, or any combination thereof.

[0129] This article is relative to Figures 1 to 8 The components, functional blocks, and modules described include processors, electronic devices, hardware devices, electronic components, logic circuits, memory, software code, firmware code, and so on, or any combination thereof. Software should be interpreted broadly as instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, and / or functions, regardless of whether it is referred to as software, firmware, middleware, microcode, hardware description languages, or other terms. Furthermore, the features discussed herein can be implemented via dedicated processor circuitry, via executable instructions, or a combination thereof.

[0130] Those skilled in the art will further understand that the various exemplary logic blocks, modules, circuits, and algorithm steps described in conjunction with the disclosure herein can be implemented as electronic hardware, computer software, or a combination of both. To clearly illustrate this interchangeability between hardware and software, various exemplary components, blocks, modules, circuits, and steps have been described above in general terms of their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. Those skilled in the art can implement the described functionality in different ways for each specific application, but such specific implementation decisions should not be construed as departing from the scope of this disclosure. Those skilled in the art will also readily recognize that the order or combination of components, methods, or interactions described herein are merely examples, and that components, methods, or interactions of various aspects of this disclosure can be combined or performed in ways other than those illustrated and described herein.

[0131] The various exemplary logics, logic blocks, modules, circuits, and algorithmic processes described in conjunction with the specific implementations disclosed herein can be implemented as electronic hardware, computer software, or a combination of both. The interchangeability of hardware and software has been broadly described in terms of functionality and illustrated in the aforementioned exemplary components, blocks, modules, circuits, and processes. Whether such functionality is implemented in hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0132] Hardware and data processing means for implementing the various exemplary logic, logic blocks, modules, and circuits described herein can be implemented or executed using a general-purpose single-chip or multi-chip processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor can be a microprocessor, or any conventional processor, controller, microcontroller, or state machine. In some embodiments, the processor may be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration. In some embodiments, specific processes and methods may be performed by circuitry specific to a given function.

[0133] In one or more aspects, the described functionality may be implemented in hardware, digital electronic circuits, computer software, firmware, including the structures disclosed in this specification and their structural equivalents or any combination thereof. Specific implementations of the subject matter described in this specification may also be implemented as one or more computer programs, i.e., one or more modules of computer program instructions encoded on a computer storage medium for execution by a data processing apparatus or for controlling the operation of a data processing apparatus.

[0134] If implemented in software, the functionality can be stored as one or more instructions or code on or transmitted through a computer-readable medium. The processes of the methods or algorithms disclosed herein can be implemented in a processor-executable software module that can reside on a computer-readable medium. Computer-readable media include both computer storage media and communication media, including any medium that can be implemented to transfer a computer program from one location to another. Storage media can be any available medium accessible to a computer. By way of example and not limitation, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), CD-ROM or other optical disc storage devices, magnetic disk storage devices or other magnetic storage devices, or any other medium capable of storing desired program code in the form of instructions or data structures and accessible to a computer. Additionally, any connection may be appropriately referred to as a computer-readable medium. As used herein, disks and optical discs include compact optical discs (CDs), laser discs, optical discs, digital versatile optical discs (DVDs), floppy disks, and Blu-ray discs, wherein disks typically magnetically reproduce data, while optical discs optically reproduce data using lasers. Combinations of the above should also be included within the scope of computer-readable media. Additionally, the operation of a method or algorithm may reside as a set of code and instructions or any combination of code and instructions on a machine-readable medium and a computer-readable medium that may be incorporated into a computer program product.

[0135] Various modifications to the specific embodiments described in this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other specific embodiments without departing from the spirit or scope of this disclosure. Therefore, the claims are not intended to be limited to the specific embodiments shown herein, but are to be accorded the widest scope consistent with this disclosure, the principles disclosed herein, and the novel features thereof.

[0136] Additionally, those skilled in the art will readily recognize that the terms “upper” and “lower” are sometimes used to facilitate the description of the drawings and to indicate relative positions on a correctly oriented page corresponding to the orientation of the drawings, and may not reflect the correct orientation of any device as implemented.

[0137] Certain features described in this specification in the context of a single embodiment may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments. Furthermore, although features may be described above as operating in certain combinations and even originally claimed in this way, one or more features from the claimed combination may be removed from that combination in some cases, and the claimed combination may be for sub-combinations or variations thereof.

[0138] Similarly, although operations are depicted in a specific order in the accompanying drawings, this should not be construed as requiring such operations to be performed in the indicated specific order or sequential order, or to perform all illustrated operations to achieve the desired result. Furthermore, the drawings may schematically depict one or more example processes in the form of flowcharts. However, other operations not depicted may be combined with the schematically illustrated example processes. For example, one or more additional operations may be performed before, after, simultaneously with, or between any illustrated operation. In some contexts, multitasking and parallel processing are advantageous. Moreover, the separation of the various system components in the embodiments described above should not be construed as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products. Additionally, some other embodiments also fall within the scope of the appended claims. In some cases, the actions recited in the claims may be performed in a different order and still achieve the desired result.

[0139] As used herein (including the claims), the term “or” in a list of two or more items means that any one of the listed items may be used alone, or any combination of two or more listed items may be used. For example, if a composition is described as containing component A, B, or C, the composition may contain A alone; B alone; C alone; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C. Furthermore, as used herein (including the claims), “or” in a list of items beginning with “at least one of” indicates a separate list, such that a list such as “at least one of A, B, or C” refers to A or B or C or AB or AC or BC or ABC (i.e., A and B and C) or any combination of any of these items. The term “substantially” is defined as being substantially, but not necessarily entirely, what is specified (and includes what is specified; for example, substantially 90 degrees includes 90 degrees, and substantially parallel includes parallel), as understood by one of ordinary skill in the art. In any disclosed specific implementation, the term “substantially” may be used in place of “[percentage]” for the specified content, where the percentage includes 0.1%, 1%, 5% or 10%.

[0140] The prior description of this disclosure is provided to enable any person skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not intended to be limited to the examples and designs described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An apparatus for wireless communication at a network entity, the apparatus comprising: At least one memory; and At least one processor, coupled to at least one memory, and operable to enable the network entity to: The power spectral density (PSD) measurement of the phase noise mask of the network entity is obtained; The integral residual PSD measurement is measured to correspond to each of the multiple phase noise bandwidth sizes within the phase noise mask; as well as The integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes is sent to each user equipment (UE) served by the network entity.

2. The apparatus of claim 1, wherein the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes is transmitted in a table, wherein the plurality of phase noise bandwidth sizes are represented as subcarriers indexed for the corresponding integral residual PSD measurement.

3. The apparatus of claim 1, wherein the at least one processor operable to cause the network entity to transmit is operable to cause the network entity to: transmit, at the start of communication with each UE, the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes via a Media Access Control Element (MAC CE) or a Radio Resource Control (RRC) signal.

4. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: At least one memory; and At least one processor, coupled to at least one memory, and operable to enable the UE to: Receive communications from the serving network entity including integrated residual PSD measurements corresponding to each of the multiple phase noise bandwidth sizes; Calculate the expected error vector magnitude (EVM) of the expected uplink transmission. Identify the desired integral residual PSD measurement from the integral residual PSD measurement associated with the desired EVM; Select the desired phase noise bandwidth size from the plurality of phase noise bandwidth sizes that corresponds to the desired integral residual PSD measurement; The estimated phase noise of the serving network entity is calculated using the expected phase noise bandwidth. as well as The estimated phase noise is eliminated from the transmissions received from the service network entity.

5. The apparatus of claim 4, wherein the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes is received in a table, wherein the plurality of phase noise bandwidth sizes are represented as subcarriers indexed for the corresponding integral residual PSD measurement.

6. The apparatus of claim 4, wherein the at least one processor operable to enable the UE to receive is operable to enable the UE to: receive, at the start of communication with the network entity, the communication including the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes via a Media Access Control CE (MAC CE) or Radio Resource Control (RRC) signal.

7. A method for wireless communication performed by a network entity, the method comprising: The power spectral density (PSD) measurement of the phase noise mask of the network entity is obtained; The integral residual PSD measurement is measured to correspond to each of the multiple phase noise bandwidth sizes within the phase noise mask; as well as The integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes is sent to each user equipment (UE) served by the network entity.

8. The method of claim 7, wherein the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes is transmitted in a table, wherein the plurality of phase noise bandwidth sizes are represented as subcarriers indexed for the corresponding integral residual PSD measurement.

9. The method of claim 7, wherein the sending comprises: At the start of communication with each UE, the integral residual PSD measurement corresponding to each of the plurality of phase noise bandwidth sizes is sent to each UE via either the Media Access Control Element (MAC CE) or the Radio Resource Control (RRC) signal.

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