Error parameter for communication using digital post-distortion at receiving device

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a first wireless communication device (WCD) may receive an indication of an error parameter associated with communication using digital post distortion (DPoD) at the first WCD. The WCD may receive a communication from a second WCD based at least in part on the error parameter, where the communication applies a digital peak-to-average power ratio (PAPR) reduction, and where receiving the communication includes application of a DPoD to the communication. Numerous other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. non-provisional patent application No. 17 / 934,759, filed on September 23, 2022, entitled "ERROR PARAMETERS FOR COMMUNICATIONS THAT USE DIGITAL POST DISTORTION AT A RECEIVING DEVICE," which is hereby expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for using error parameters of digitally post-distorted communications at a receiving device. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include one or more network nodes that support communications for wireless communication devices, such as user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. A "downlink" (or "DL") refers to a communication link from a network node to a UE, and an "uplink" (or "UL") refers to a communication link from a UE to a network node. Some wireless networks may support device-to-device communications, such as via a local link (e.g., a side link (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, etc.).

[0006] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at a city, country, region and / or global level. New Radio (NR) (which may be referred to as 5G) is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by: improving spectrum efficiency; reducing costs; improving services; utilizing new spectrum; and using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink, CP-OFDM and / or single carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink to better integrate with other open standards; and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR and other radio access technologies remain useful. Summary of the invention

[0007] Some aspects described herein relate to a method of wireless communication performed by a first wireless communication device (WCD). The method may include receiving an indication of an error parameter associated with a communication using digital post distortion (DPoD) at the first WCD. The method may include receiving a communication from a second WCD based at least in part on the error parameter, wherein the communication has digital peak-to-average power ratio (PAPR) reduction applied, and wherein receiving the communication includes application of the DPoD to the communication.

[0008] Some aspects described herein relate to a method of wireless communication performed by a second WCD. The method may include sending an indication of an error parameter associated with a communication using DPoD at a first WCD. The method may include sending a communication to the first WCD based at least in part on the error parameter, wherein the communication has digital PAPR reduction applied.

[0009] Some aspects described herein relate to a first WCD for wireless communication. The first wireless communication device may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive an indication of an error parameter associated with a communication using DPoD at the first WCD. The one or more processors may be configured to receive a communication from a second WCD based at least in part on the error parameter, wherein the communication has digital PAPR reduction applied, and wherein receiving the communication includes application of the DPoD to the communication.

[0010] Some aspects described herein relate to a second WCD for wireless communication. The second wireless communication device may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to send an indication of an error parameter associated with a communication using DPoD at a first WCD. The one or more processors may be configured to send a communication to the first WCD based at least in part on the error parameter, wherein the communication has digital PAPR reduction applied.

[0011] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a first WCD. The set of instructions, when executed by one or more processors of the WCD, may cause the WCD to receive an indication of an error parameter associated with a communication using DPoD at the first WCD. The set of instructions, when executed by one or more processors of the WCD, may cause the WCD to receive a communication from a second WCD based at least in part on the error parameter, wherein the communication has digital PAPR reduction applied, and wherein receiving the communication includes application of the DPoD to the communication.

[0012] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a first WCD. The set of instructions, when executed by one or more processors of the WCD, may cause the WCD to send an indication of an error parameter associated with communication using DPoD at the first WCD. The set of instructions, when executed by one or more processors of the WCD, may cause the WCD to send a communication to the first WCD based at least in part on the error parameter, wherein the communication has digital PAPR reduction applied.

[0013] Some aspects described herein relate to an apparatus for wireless communications. The apparatus may include means for receiving an indication of an error parameter associated with communications using DPoD at the apparatus. The apparatus may include means for receiving a communication from a WCD based at least in part on the error parameter, wherein the communication has digital PAPR reduction applied, and wherein receiving the communication includes application of the DPoD to the communication.

[0014] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for sending an indication of an error parameter associated with communication using DPoD at a WCD. The apparatus may include means for sending a communication to the WCD based at least in part on the error parameter, wherein the communication has digital PAPR reduction applied.

[0015] Aspects collectively include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network entities, network nodes, wireless communication devices and / or processing systems as fully described herein with reference to the drawings and description and as illustrated in the drawings and description.

[0016] The features and technical advantages of examples according to the present disclosure have been outlined quite broadly above so that the following specific embodiments may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations of the claims.

[0017] Although various aspects are described in the present disclosure by illustrating some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / shopping equipment, medical equipment and / or artificial intelligence devices). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components and / or system-level components. The equipment incorporating the various aspects and features described may include additional components and features for implementing and practicing the various aspects claimed and described. For example, the transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or summers). The various aspects described herein are intended to be practiced in various devices, components, systems, distributed arrangements and / or end-user devices of various sizes, shapes and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to be able to understand the above-mentioned features of the present disclosure in detail, a more specific description briefly summarized above may be obtained by reference to various aspects (some of which are illustrated in the accompanying drawings). However, it should be noted that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the specification may admit of other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0019] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0020] Figure 2 is a diagram illustrating an example of communication between a network node and a user equipment (UE) in a wireless network according to the present disclosure.

[0021] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0022] Figure 4 is a diagram illustrating an example of communication using non-linear (NL) distortion according to the present disclosure.

[0023] Figure 5 is a diagram of an example associated with error parameters for communications using digital post distortion (DPoD) at a receiving device in accordance with the present disclosure.

[0024] Figure 6 is a diagram of an example associated with digital NL modeling according to the present disclosure.

[0025] Figure 7 is a diagram illustrating an example process performed, for example, by a first wireless communication device (WCD) according to the present disclosure.

[0026] Figure 8 is a diagram illustrating an example process performed, for example, by a second WCD according to the present disclosure.

[0027] Fig. 9 is a diagram of an example apparatus for wireless communications according to the present disclosure.

[0028] Fig.10 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0029] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms, and should not be construed as being limited to any specific structure or function presented throughout the present disclosure. Instead, these aspects are provided so that the present disclosure will be thorough and complete, and the scope of the present disclosure will be fully conveyed to those skilled in the art. It should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein, whether it is independently or in combination with any other aspect of the disclosure. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method practiced using other structures, functionality, or structure and functionality in addition to or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the present invention.

[0030] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0031] Although various aspects may be described herein using terms generally associated with 5G or new radio (NR) radio access technology (RAT), various aspects of the present disclosure may be applicable to other RATs, such as 3G RAT, 4G RAT and / or RATs beyond 5G (e.g., 6G).

[0032] Figure 11 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, or may include elements of a 5G (e.g., NR) network and / or elements of a 4G (e.g., Long Term Evolution (LTE)) network, etc. The wireless network 100 may include one or more network nodes 110 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. The network node 110 is a network node that communicates with the UE 120. As shown in the figure, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, which means that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). As another example, the network node 110 may be a decomposed network node (sometimes referred to as a decomposed base station), which means that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed between two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0033] In some examples, the network node 110 is or includes a network node that communicates with the UE 120 via a radio access link, such as an RU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a fronthaul link or a midhaul link, such as a DU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a midhaul link or communicates with the core network via a backhaul link, such as a CU. In some examples, the network node 110 (such as an aggregated network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. The network node 110 may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, a RU, a CU, a mobility element of a network, a core network node, a network element, a network equipment, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 via various types of fronthaul, midhaul, and / or backhaul interfaces (such as direct physical connections, air interfaces, or virtual networks) using any suitable transport network.

[0034] In some examples, the network node 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to the coverage area of ​​the network node 110 and / or the network node subsystem serving the coverage area, depending on the context in which the term is used. The network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 120 with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by a UE 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by a UE 120 associated with the femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A network node 110 for a macro cell may be referred to as a macro network node. A network node 110 for a pico cell may be referred to as a pico network node. The network node 110 for a femto cell may be referred to as a femto network node or a home network node. Figure 1 In the example shown in , network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. A network node may support one or more (e.g., three) cells. In some examples, a cell may not necessarily be stationary, and the geographic area of ​​a cell may move depending on the location of a mobile network node 110 (e.g., a mobile network node).

[0035] In some aspects, the term "base station" or "network node" may refer to an aggregated base station, a decomposed base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, a "base station" or "network node" may refer to a CU, a DU, a RU, a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a device configured to perform one or more functions (such as those described herein in conjunction with the network node 110). In some aspects, the term "base station" or "network node" may refer to a plurality of devices configured to perform one or more functions. For example, in some distributed systems, each of a number of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to repeat the execution of at least a portion of the function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one of the base station functions but not the other. In this way, a single device may include more than one base station.

[0036] The wireless network 100 may include one or more relay stations. A relay station is a network node that can receive transmissions of data from an upstream node (e.g., a network node 110 or a UE 120) and transmit transmissions of data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that is capable of relaying transmissions for other UEs 120. Figure 1 In the example shown in , a network node 110d (e.g., a relay network node) may communicate with a network node 110a (e.g., a macro network node) and a UE 120d to facilitate communication between the network node 110a and the UE 120d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0037] The wireless network 100 may be a heterogeneous network that includes different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, etc. These different types of network nodes 110 may have different transmit power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro network node may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico network node, a femto network node, and a relay network node may have a lower transmit power level (e.g., 0.1 watt to 2 watts).

[0038] The network controller 130 may be coupled to or in communication with a set of network nodes 110 and may provide coordination and control for the network nodes 110. The network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link. The network nodes 110 may also communicate directly with each other or indirectly via a wireless or wired backhaul communication link. In some aspects, the network controller 130 may be, or may include, a CU or a core network device.

[0039] UE 120 may be dispersed throughout the wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, an access terminal, a terminal, a mobile station, and / or a subscriber unit. UE 120 may be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, a UE function of a network node, and / or any other suitable device configured to communicate via a wireless or wired medium.

[0040] Some UEs 120 may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags that may communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered as Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered as customer premises equipment. UE 120 may be included inside a housing that houses components of UE 120, such as a processor component and / or a memory component. In some examples, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0041] In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. RAT may be referred to as a radio technology, air interface, etc. Frequency may be referred to as a carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0042] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using network node 110 as an intermediary to communicate with each other). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0043] The devices of the wireless network 100 may communicate using an electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, the devices of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency ranges designated FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). It should be understood that, although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the “below 6 GHz” band in various documents and articles. A similar naming issue sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the “millimeter wave” band in documents and articles, although different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as the “millimeter wave” band by the International Telecommunication Union (ITU).

[0044] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125 GHz–24.25 GHz). The bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and thus the features of FR1 and / or FR2 can be effectively extended to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations to more than 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz-71 GHz), FR4 (52.6 GHz-114.25 GHz), and FR5 (114.25 GHz-300 GHz). Each of these higher frequency bands falls within the EHF band.

[0045] Considering the above examples, unless otherwise specifically stated, it should be understood that if the term "below 6 GHz" or the like is used herein, the term may broadly refer to frequencies that may be lower than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and / or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0046] In some aspects, a first wireless communication device (WCD) may include a communication manager 140 or 150. For example, the first WCD may include or may be included in the UE 120 or the network node 110. As described in more detail elsewhere herein, the communication manager 140 or 150 may receive an indication of an error parameter associated with a communication using digital post distortion (DPoD) at the first WCD; and receive a communication from a second WCD based at least in part on the error parameter, wherein the communication has digital peak-to-average power ratio (PAPR) reduction applied, and wherein receiving the communication includes application of the DPoD to the communication. Additionally or alternatively, the communication manager 140 or 150 may perform one or more other operations described herein.

[0047] In some aspects, the second WCD may include the communication manager 140 or 150. For example, the second WCD may include or may be included in the UE 120 or the network node 110. As described in more detail elsewhere herein, the communication manager 140 or 150 may send an indication of an error parameter associated with a communication using DPoD at the first WCD; and send a communication to the first WCD based at least in part on the error parameter, wherein the communication has digital PAPR reduction applied. Additionally or alternatively, the communication manager 140 or 150 may perform one or more other operations described herein.

[0048] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 The examples described are different.

[0049] Figure 2 2 is a diagram illustrating an example 200 of a network node 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The network node 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1). The network node 110 of example 200 includes one or more radio frequency components, such as an antenna 234 and a modem 254. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include a radio frequency component that facilitates direct communication with the UE 120, such as one or more CUs or one or more DUs.

[0050] At the network node 110, a transmit processor 220 may receive data intended for a UE 120 (or a set of UEs 120) from a data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCS) for the UE 120 based at least in part on one or more channel quality indicators (CQIs) received from the UE 120. The network node 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS selected for the UE 120, and may provide data symbols for the UE 120. The transmit processor 220 may process system information (e.g., for semi-static resource allocation information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a to 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and / or upconvert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a through 232t may transmit a set of downlink signals (eg, T downlink signals) via a corresponding set of antennas 234 (eg, T antennas) (shown as antennas 234a through 234t).

[0051] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) may receive downlink signals from the network node 110 and / or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols where applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to the data sink 260, and may provide decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter, among other things. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0052] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the network node 110 via the communication unit 294.

[0053] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc. Antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays may include one or more antenna elements (in a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, and / or may be coupled to one or more transmit and / or receive components (such as, Figure 2 One or more antenna elements of one or more components in.

[0054] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-decoded by the TX MIMO processor 266, where applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and sent to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform the functions described herein (eg, with reference to Figures 5 to 10 ) or any aspect of any of the methods described herein.

[0055] At the network node 110, uplink signals from the UE 120 and / or other UEs may be received by the antenna 234, processed by the modem 232 (e.g., a demodulator component (shown as DEMOD) of the modem 232), detected by the MIMO detector 236 (where applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink communication and / or uplink communication. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform operations described herein (e.g., with reference to Figures 5 to 10 ) or any aspect of any of the methods described herein.

[0056] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the network node 110 may perform one or more techniques associated with error parameters for communications using DPoD at a receiving device, as described in more detail elsewhere herein. For example, the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the Figure 7 The process 700 Figure 8 800 and / or operations of other processes as described herein. Memory 242 and memory 282 may store data and program codes for network node 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of network node 110 and / or UE 120 (e.g., directly executed, or executed after compilation, conversion, and / or interpretation), may cause one or more processors, UE 120, and / or network node 110 to perform or direct, for example, Figure 7 700 Figure 8 The process 800 and / or operations of other processes as described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0057] In some aspects, the first WCD includes means for receiving an indication of an error parameter associated with a communication using DPoD at the first WCD; and / or means for receiving a communication from a second WCD based at least in part on the error parameter, wherein the communication has digital PAPR reduction applied, and wherein receiving the communication includes application of DPoD to the communication. In some aspects, means for the first WCD to perform operations described herein may include, for example, one or more of the communication manager 150, the transmit processor 220, the TX MIMO processor 230, the modem 232, the antenna 234, the MIMO detector 236, the receive processor 238, the controller / processor 240, the memory 242, or the scheduler 246. In some aspects, means for the first WCD to perform operations described herein may include, for example, one or more of the communication manager 140, the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the controller / processor 280, or the memory 282.

[0058] In some aspects, the second WCD includes means for sending an indication of an error parameter associated with communications using DPoD at the first WCD; and / or means for sending communications to the first WCD based at least in part on the error parameter, wherein the communications have digital PAPR reduction applied. In some aspects, means for the second WCD to perform operations described herein may include, for example, one or more of the communications manager 150, the transmit processor 220, the TX MIMO processor 230, the modem 232, the antenna 234, the MIMO detector 236, the receive processor 238, the controller / processor 240, the memory 242, or the scheduler 246. In some aspects, means for the second WCD to perform operations described herein may include, for example, one or more of the communications manager 140, the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the controller / processor 280, or the memory 282.

[0059] Although Figure 2 The blocks in the 2000 and 2010 are illustrated as distinct components, but the functionality described above for these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described for the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0060] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 The examples described are different.

[0061] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or components in a variety of ways. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, a base station or network equipment can be implemented in an aggregated or decomposed architecture. For example, a base station (such as a node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a TRP or a cell, etc.) or one or more units (or one or more components) that perform base station functionality can be implemented as an aggregated base station (also referred to as an independent base station or a monolithic base station) or a decomposed base station. "Network entity" or "network node" may refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof).

[0062] An aggregated base station (e.g., an aggregated network node) may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). A decomposed base station (e.g., a decomposed network node) may be configured to utilize a protocol stack that is physically or logically distributed between two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, a CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed across one or more other network nodes. A DU may be implemented to communicate with one or more RUs. Each of the CU, DU, and RU may also be implemented as a virtual unit, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), and the like.

[0063] Base station type operations or network designs may take into account the aggregated nature of base station functionality. For example, a decomposed base station may be utilized in an IAB network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate the scaling of a communication system by separating base station functionality into one or more units that can be deployed separately. A decomposed base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented virtually for at least one unit, which may enable flexibility in network design. Individual units of a decomposed base station may be configured for wired or wireless communication with at least one other unit of the decomposed base station.

[0064] Figure 3 3 is a diagram illustrating an example disaggregated base station architecture 300 according to the present disclosure. The disaggregated base station architecture 300 may include a CU 310 that may communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more disaggregated control units, such as a near-RT RIC 325 via an E2 link, or a non-RTRIC 315 associated with a service management and orchestration (SMO) framework 305, or both. The CU 310 may communicate with one or more DUs 330 via respective midhaul links, such as via an F1 interface. Each of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links. Each of the RUs 340 may communicate with one or more UEs 120 via respective radio frequency (RF) access links. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.

[0065] Each of the units (including CU 310, DU 330, RU 340) and the near-RT RIC 325, non-RT RIC 315, and SMO framework 305 may include or be coupled to one or more interfaces, the one or more interfaces being configured to receive or send signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to one or more communication interfaces of the corresponding unit may be configured to communicate with one or more of the other units via a transmission medium. In some examples, each of the units may include a wired interface and a wireless interface, the wired interface being configured to receive signals or send signals to one or more of the other units via a wired transmission medium, the wireless interface being configured to receive signals or send signals to one or more of the other units via a wired transmission medium, or both.

[0066] In some aspects, the CU 310 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by the CU 310. The CU 310 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP) functionality), control plane functionality (e.g., central unit-control plane (CU-CP) functionality), or a combination thereof. In some specific implementations, the CU 310 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, the CU 310 may be implemented to communicate with the DU 330 for network control and signaling.

[0067] Each DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 may host one or more of a radio link control (RLC) layer, a MAC layer, and one or more high physical (PHY) layers, at least in part, according to a functional partition such as that defined by 3GPP. In some aspects, one or more high PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc. In some aspects, the DU 330 may further host one or more low PHY layers, such as one or more modules for fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming or physical random access channel (PRACH) extraction and filtering, etc. Each layer (which may also be referred to as a module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.

[0068] Each RU 340 may implement lower layer functionality. In some deployments, the RU 340 controlled by the DU 330 may correspond to a logical node that hosts RF processing functions or low PHY layer functions based on functional split (e.g., functional split defined by 3GPP) (such as lower layer functional split), such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering, etc. In this architecture, each RU 340 may be operated to handle over-the-air (OTA) communications with one or more UEs 120. In some specific implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable each DU 330 and CU 310 to be implemented in a cloud-based RAN architecture (such as a vRAN architecture).

[0069] The SMO framework 305 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 305 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 305 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) platform 335) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 315, and near-RTRIC 325. In some specific implementations, the SMO framework 305 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 311) via the O1 interface. Additionally, in some implementations, the SMO framework 305 can communicate directly with each of the one or more RUs 340 via a corresponding O1 interface. The SMO framework 305 can also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.

[0070] The non-RT RIC 315 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 may be coupled to or in communication with the near-RT RIC 325 (such as via an A1 interface). The near-RT RIC 325 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB with the near-RT RIC 325.

[0071] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 325 and may be received from a non-network data source or from a network function at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 may be configured to regulate RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of the O1 interface) or via the creation of RAN management policies (such as A1 interface policies).

[0072] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 The examples described are different.

[0073] Figure 4 4 is a diagram illustrating an example 400 of communicating using non-linear (NL) distortion according to the present disclosure. Figure 4 As shown, the first WCD and the second WCD may communicate based on sending a communication with NL distortion and attempting to decode the communication with NL distortion. The first WCD may include a UE (e.g., UE 120) or a network node (e.g., network node 110 or a relay) or may be included in the UE or the network node. The second node may include a UE (e.g., UE 120) or a network node (e.g., network node 110 or a relay) or may be included in the UE or the network node.

[0074] As shown by reference numeral 405, the second WCD may transmit communications having NL distortion and the first WCD may receive the communications. The second WCD may transmit communications having NL distortion based on the second WCD using nonlinear components such as a high power power amplifier (PA) having a limited linear dynamic range (DR) and a polynomial response. The NL distortion may be classified into in-band distortion that affects link performance (e.g., error vector magnitude (EVM)) and out-of-band distortion corresponding to the amount of adjacent channel interference (ACI).

[0075] To reduce NL distortion, power output backoff (boOut) may be used to reduce the transmit power used to transmit communications. However, an increase in boOut may result in a decrease in power amplification effectiveness (PAE). A decrease in PAE may correspond to a decrease in power transmitted on the channel and an increase in energy dissipated as heat.

[0076] As shown by reference numeral 410, the second node may use the DMRS or other reference signal of the communication to estimate the NL of the communication. For example, the second node may use a sequence associated with the DMRS to estimate the NL distortion of the signal and correct the received signal for the NL distortion. This may include DPoD correction.

[0077] As indicated by reference numeral 415, the second node may decode the communication based on the estimated NL of the communication.

[0078] As indicated above, Figure 4 are provided as examples. Other examples can be found in the Figure 4 The examples described are different.

[0079] In some networks, NL may be introduced to the signal based at least in part on the limitations of the PA, as described above. In some networks, NL may be introduced using a crest factor reduction (CFR) function (also referred to as "CFR") to reduce the PAPR by compressing the signal in the power domain before providing it to the PA. In this way, the CFR may reduce the distortion of the PA.

[0080] In some networks, a complementary approach to boOut is to use CFR and digital pre-distortion (DPD) functions in the digital front end (DFE) of the transmitting WCD. CFR reduces the dynamic range (e.g., power and / or voltage) of the signal, and DPD helps reduce the amount of distortion. As a result, boOut is reduced and PA efficiency is improved.

[0081] However, CFR comes at a cost. Some CFRs are distortion-free, while others, such as iterative clipping and filtering (ICF), introduce in-band distortion (e.g., EVM) and / or out-of-band distortion (e.g., adjacent channel leakage ratio (ACLR)).

[0082] The CFR method digitally reduces the PAPR, but it may also increase the EVM due to folding out-of-band interference into the band.

[0083] For example, for a 30 kilohertz (Khz) subcarrier spacing (SCS) with 106 resource blocks (RBs), CFR can provide an advantage to PAPR at the expense of EVM. The transmit EVM is based at least in part on the ICF PAPR target, and the communication protocol can set a minimum EVM requirement for each modulation, which can determine the PAPR target.

[0084] In some designs, ICF may incur the cost of in-band distortion or out-of-band distortion, depending on the requirements of the communication protocol. For example, in some networks, the entire cost is in-band to maintain high ACLR requirements (e.g., in FR1).

[0085] In one example, for a target PAPR of -3dB (e.g., output about 2.5dB PAPR), when effective DPD is applied, the achievable ACLR can be 60dB (e.g., with a boOut of about 3dB). For higher frequency bands (e.g., FR2 and above), the ACLR requirements can be relaxed, and thus less cost can be placed on in-band EVM.

[0086] DPoD is a receiver function used to correct signal distortion caused by PA and / or CFR. DPoD can be configured to handle EVM (e.g., without considering ACLR in the receiver). DPoD can be used in higher frequency bands (e.g., FR2 and above) where ACLR constraints are relaxed and thus DPoD can focus on addressing EVM caused by high PA compression.

[0087] The distance / link budget is determined by In the example where ρ is defined and the sharpness factor of the PA is ρ=2, DPoD provides an improvement in performance and a reduction in boOut.

[0088] In higher frequency bands (eg, FR2), based at least in part on relaxed ACLR requirements, CFR and DPD may not be applied.

[0089] In lower frequency bands (e.g., FR1), DPoD may be applied. For example, in FR1, the primary limitation may be ACLR, which may limit DPoD (e.g., in addition to CFR and / or DPD) based at least in part on minor clipping of the signal (e.g., PAPR outside of CFR) that may violate ACLR parameters.

[0090] When CFR and DPD and boOut are applied to reduce PAPR (eg, to avoid clipping), the CFR produced with DPD and PA may be linear, and thus DPoD may not improve the received signal.

[0091] In some aspects described herein, DPoD may be configured with a directionality based at least in part on CFR. For example, EVM attributed to ICF or any other CFR method may be considered as part of the NL system of the sending WCD. In some aspects, the PAPR target of CFR may be configured at least in part based on balancing PAPR gain with associated EVM cost. The receiving WCD may use DPoD to correct for increased EVM. To support this configuration, EVM parameters may be updated based at least in part on the use of DPoD. For example, when DPoD is used by the receiving WCD, the 256 quadrature amplitude modulation (QAM) EVM requirement may be reduced from 32dB+ to less than 20dB.

[0092] In some aspects, the transmitting WCD may have the capability to signal one or more parameters of a CFR function for PAPR reduction, and the receiving WCD may use the one or more parameters to improve modeling of the CFR (e.g., NL of the CFR). Additionally or alternatively, the receiving WCD may estimate the CFR model based at least in part on the received signal.

[0093] In some aspects, the sending WCD or controlling WCD (e.g., gNB, CU, DU, and / or RU) may send an indication of an EVM parameter (e.g., maximum EVM) for the CFR to be used when DPoD is enabled. In some aspects, the sending WCD or controlling WCD may send an indication of additional EVM parameters to be used when DPoD is not enabled.

[0094] In some aspects, the EVM parameters may be associated with the EVM before or after providing the transmitted signal to the PA. In some aspects, the transmitting WCD or the controlling WCD may provide a first EVM parameter associated with the transmitted signal before providing the transmitted signal to the PA, and the transmitting WCD or the controlling WCD may provide a second EVM parameter associated with the transmitted signal before providing the transmitted signal to the PA. For post-PA, the receiving WCD may not distinguish between the models of the PA, the DPD function, and / or the CFR function, and may treat the entire NL model as an NL block to be corrected.

[0095] In some aspects, the transmitting WCD and / or the receiving WCD may send an indication of support for using EVM parameters to be used when the receiving WCD uses DPoD. In some aspects, the transmitting WCD and the receiving WCD may negotiate desired limits for EVM. For example, the transmitting WCD and the receiving WCD may use layer 1, layer 2, and / or RRC signaling to select EVM parameters to be used when the receiving WCD uses DPoD. In some aspects, the receiving WCD may indicate to the receiving WCD an amount of EVM correction to be performed using the WCD's DPoD model and / or based at least in part on computational resources (e.g., processing and / or memory) available for application to the DPoD model. In some aspects, the EVM parameters may be based at least in part on the MCS, waveform, and / or rank associated with the communication associated with the EVM parameters.

[0096] In some aspects, the sending WCD may send an indication of a CFR model. For example, multiple candidate CFR models may be known to the sending WCD and the receiving WCD (e.g., based at least in part on an indication within a communication protocol), and the sending WCD may send an indication (e.g., an index) of selecting a CFR model from the multiple candidate CFR models. In some aspects, the sending WCD may use layer 1, layer 2, and / or RRC signaling to send an indication of a CFR model. In some aspects, the CFR model may have values ​​associated with multiple iterations, frequency selectivity, and / or clipping modeling, etc. In some aspects, the CFR model may indicate a PAPR output value. In some aspects, the amount of information provided to indicate a CFR model and / or which CFR model is used by the sending WCD may be negotiated between the sending WCD and the receiving WCD. In some aspects, the CFR model used by the sending WCD may be based at least in part on the MCS, waveform, and / or rank of the communication associated with the CFR model.

[0097] In some aspects, the sending WCD and the receiving WCD may have a communication link, such as a Uu link (e.g., an access link and / or a multi-hop connection including an access link) or a side link. Communications sent in association with the EVM requirements and application of the DPoD at the receiving WCD may be unicast transmissions. In some aspects, the sending WCD and the receiving WCD may be some combination of UEs and / or network nodes (e.g., CUs, DUs, RUs, and / or relays).

[0098] In some aspects, the EVM parameters may include a target PAPR that is lower (and the allowed EVM is higher) for communications where the DPoD is to be used by the receiving WCD and a target PAPR that is higher (and the allowed EVM is lower) for communications where the DPoD is not to be used by the receiving WCD.

[0099] Based at least in part on the use of the EVM parameter and / or the associated target PAPR associated with the use of the DPoD by the receiving device, the transmitting WCD and / or the receiving WCD may balance EVM and PAPR reduction to improve the communication link. In this manner, the transmitting WCD and the receiving WCD may communicate with an increased link budget, which may support saving power resources that may otherwise be used to transmit communications, may increase spectral efficiency based at least in part on the use of a higher MCS, and / or increase the range of communications.

[0100] Figure 5 is a diagram of an example 500 associated with error parameters for communications using DPoD at a receiving device according to the present disclosure. Figure 5As shown, a first WCD (e.g., a UE, a network node 110, a CU, a DU, a RU, and / or a relay) can communicate with a second WCD (e.g., a UE, a network node 110, a CU, a DU, a RU, and / or a relay). In some aspects, the first WCD and the second WCD can be part of a wireless network (e.g., the wireless network 100). In some aspects, the communication link between the first WCD and the second WCD can include a Uu link, a side link, and / or a backhaul wireless link.

[0101] As shown at reference numeral 505, a first WCD may receive an indication of error parameters associated with communications not using DPoD at the first WCD, and a second WCD may send an indication of error parameters associated with communications not using DPoD at the first WCD. The error parameters may include EVM-based parameters, such as EVM limits.

[0102] As indicated by reference numeral 510, a first WCD may send an indication of support for error parameters associated with communications using DPoD at the first WCD, and a second WCD may receive an indication of support for error parameters associated with communications using DPoD at the first WCD. In some aspects, the first WCD may indicate that the first WCD supports a plurality of error parameters to be used depending on whether the first WCD is to apply DPoD to associated communications.

[0103] As indicated by reference numeral 515, the first WCD may send an indication of one or more parameters for selection of error parameters associated with communications using DPoD at the WCD, and the second WCD may receive an indication of one or more parameters for selection of error parameters associated with communications using DPoD at the WCD. For example, the first WCD may indicate an amount of error reduction that the first WCD may perform (e.g., using DPoD) upon receipt of communications. In some aspects, the first WCD may indicate available resources to be used for DPoD. In some aspects, error parameters (e.g., EVM parameters, such as EVM limits) may be negotiated between the first WCD and the second WCD. In some aspects, the first WCD and the second WCD may exchange information associated with selection of the function and / or one or more parameters of the function.

[0104] As shown at reference numeral 520, the second WCD may select an error parameter and / or function to be used for communications using DPoD at the first WCD. In some aspects, the second WCD may select the error parameter based at least in part on feedback from the first WCD, such as an indication and / or capability report as described in connection with reference numeral 515. In some aspects, the second WCD may select the error parameter based at least in part on an MCS of the communication, a waveform of the communication, and / or a rank of the communication, etc. In some aspects, the second WCD may select the function to use based at least in part on an MCS of the communication, a waveform of the communication, and / or a rank of the communication, etc.

[0105] As indicated by reference numeral 525, the first WCD may receive an indication of an error parameter associated with communications using DPoD at the first WCD and / or an indication of a function used by the second WCD to apply PAPR reduction, and the second WCD may send an indication of an error parameter associated with communications using DPoD at the first WCD and / or an indication of a function used by the second WCD to apply PAPR reduction. In some aspects, the error parameter comprises an EVM parameter (e.g., an EVM limit). In some aspects, the indication of the error parameter may be associated with an error in a transmitted signal as provided to a PA of the second WCD or an error in a transmitted signal as provided from the PA of the second WCD. In some aspects, the indication of the error parameter may indicate both the error parameter of the transmitted signal as provided to the PA and the error parameter of the transmitted signal as provided from the PA.

[0106] In some aspects, the error parameter associated with communications using DPoD at the first WCD may be a candidate error parameter that may be used based at least in part on whether the first WCD is to apply DPoD to the communications (e.g., together with the error parameter associated with communications not using DPoD at the first WCD). For example, the error parameter associated with communications using DPoD at the first WCD may have a relaxed error requirement (e.g., allowing for increased error) based at least in part on compensating for the relaxed error requirement for application of DPoD to the communications.

[0107] In some aspects, the indication of the function used by the second WCD to apply PAPR reduction can support the first WCD to apply DPoD with reduced complexity and / or reduced latency. Alternatively, the first WCD can estimate the function based at least in part on the communication, one or more additional signals, and / or a machine learning model, etc. In some aspects, the indication of the function can indicate frequency selectivity, a clipping model, and / or a number of iterations used in the function, etc. In some aspects, the indication of the function can identify parameters of the output of the function, such as the PAPR output of the function. In some aspects, the indication of the function can identify the selection of the function from a set of candidate functions known to the transmitting WCD and the receiving WCD (e.g., known via configuration information and / or a communication protocol).

[0108] As shown by reference numeral 530, the second WCD may apply digital PAPR reduction. For example, before providing a signal associated with the communication to the PA, the second WCD may use CFR to digitally reduce the PAPR. In some aspects, before providing the signal to the PA, the second WCD may apply digital PAPR reduction. For example, the second WCD may use a CFR function to compress the power of the signal based at least in part on, for example, reducing the power associated with a power peak of the signal. As an alternative or in addition to analog PAPR reduction, digital PAPR reduction may be performed. Analog PAPR reduction may be performed by the PA using, for example, clipping of the power peak of the signal.

[0109] As indicated by reference numeral 535, the first WCD may receive the communication based at least in part on the error parameter, and the second WCD may send the communication based at least in part on the error parameter. For example, the communication may have an error parameter that allows for increased error (e.g., EVM limit) based at least in part on the first WCD using DPoD to receive the communication. In some aspects, the communication may have a reduced PAPR (e.g., improved PAPR) based at least in part on allowing for increased error.

[0110] As indicated by reference numeral 540, the WCDs may apply a DPoD to the communication. For example, the first WCD may apply the DPoD to reduce signal errors and / or NL in the communication. In some aspects, the first WCD may apply a DPoD based at least in part on an indication of a function to be used to apply PAPR reduction to the second WCD. For example, the DPoD may be based at least in part on frequency selectivity, a clipping model, and / or a number of iterations used in the function.

[0111] Based at least in part on the use of the EVM parameter and / or the associated target PAPR associated with the use of the DPoD by the receiving device, the transmitting WCD and / or the receiving WCD may balance EVM and PAPR reduction to improve the communication link. In this manner, the transmitting WCD and the receiving WCD may communicate with an increased link budget, which may support saving power resources that may otherwise be used to transmit communications, may increase spectral efficiency based at least in part on the use of a higher MCS, and / or increase the range of communications.

[0112] As indicated above, Figure 5 are provided as examples. Other examples can be found in relation to Figure 5 The examples described are different.

[0113] Figure 6 is a diagram of an example 600 associated with digital NL modeling according to the present disclosure. Figure 6 , a sending WCD (e.g., UE 120, network node 110, CU, DU, and / or RU) may communicate with a receiving WCD (e.g., UE 120, base station 110, CU, DU, and / or RU). In some aspects, the sending WCD and the receiving WCD may be part of a wireless network (e.g., wireless network 100). The sending WCD and the receiving WCD may be in Figure 6 The operations shown are performed after a wireless connection has been established.

[0114] like Figure 6 As shown, the set of NL operations may include receiving an input 605. An iteration 610 of the NL operation may include an NL function 615 and / or a linear filter 620. Each iteration of the NL operation may include providing the input 605 to the NL function 615 and from the NL function 615 to the linear filter 620. After performing a configured number of iterations 610 of the NL operation, the NL operation generates an output 625. The sending WCD may send the output (e.g., after performing one or more additional operations such as front end unit operations, etc.).

[0115] In some aspects, the one or more parameters for the NL operation may include a linear filter 620, an NL function 615, and / or a plurality of iterations 610 of the NL operation, etc. In some aspects, in conjunction with Figure 5 The described CFR may include NL function 615 and / or linear filter 620 and / or may perform a combination of Figure 6 Describes the NL operation.

[0116] As indicated above, Figure 6 are provided as examples. Other examples can be found in the Figure 6 The examples described are different.

[0117] Figure 77 is a diagram illustrating an example process 700 performed, for example, by a first WCD according to the present disclosure. Example process 700 is an example of a WCD (e.g., a UE, a network node 110, a CU, a DU, a RU, and / or a relay) performing operations associated with error parameters for communications using DPoD at a receiving device.

[0118] like Figure 7 As shown, in some aspects, process 700 may include receiving an indication of an error parameter associated with communications using DPoD at the first WCD (block 710). Fig. 9 The WCD depicted in FIG. 9 (eg, using communications manager 140 or 150 and / or receiving component 902) may receive an indication of an error parameter associated with communications using DPoD at the first WCD, as described above.

[0119] like Figure 7 As further shown, in some aspects, process 700 may include receiving a communication from a second WCD based at least in part on the error parameter, wherein the communication has digital PAPR reduction applied to it, and wherein receiving the communication includes application of DPoD to the communication (block 720). For example, Fig. 9 The WCD depicted in (e.g., using communication manager 140 or 150 and / or receiving component 902) may receive a communication from a second WCD based at least in part on the error parameter, wherein the communication has digital PAPR reduction applied, and wherein receiving the communication includes application of DPoD to the communication, as described above.

[0120] Process 700 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0121] In a first aspect, process 700 includes receiving an indication of an additional error parameter associated with communications not using DPoD at the first WCD, and receiving an additional communication based at least in part on the additional error parameter.

[0122] In a second aspect, alone or in combination with the first aspect, the amount of allowed error associated with the error parameter is greater than the amount of allowed error associated with the additional error parameter.

[0123] In a third aspect, alone or in combination with one or more of the first and second aspects, the error parameter comprises an EVM parameter.

[0124] In a fourth aspect, alone or in combination with one or more of the first to third aspects, process 700 includes receiving an indication of a function used to apply PAPR reduction to a second WCD.

[0125] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the application of the DPoD to the communication comprises application of the DPoD based at least in part on a function for applying PAPR reduction.

[0126] In a sixth aspect, either alone or in combination with one or more of aspects one to five, the indication of the function comprises one or more of: an indication of frequency selectivity, a clipping model, or one or more of a plurality of iterations used in the function, a selection of the function from a set of candidate functions for applying PAPR reduction, or a PAPR output of the function.

[0127] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the function used by the second WCD to apply PAPR reduction is based at least in part on one or more of negotiation of function parameters between the first WCD and the second WCD, an MCS of the communication, a waveform of the communication, or a rank of the communication.

[0128] In an eighth aspect, either alone or in combination with one or more of aspects one to seven, the error parameter is associated with one or more of: an error in a transmitted signal as provided at an input of a power amplifier of the second WCD or an error in a transmitted signal as provided at an output of the power amplifier of the second WCD.

[0129] In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, process 700 includes sending an indication of support for error parameters associated with communications using DPoD at the WCD.

[0130] In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, process 700 includes sending an indication of selected one or more parameters for error parameters associated with communications using DPoD at the WCD.

[0131] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the error parameter is based at least in part on one or more of an MCS of the communication, a waveform of the communication, or a rank of the communication.

[0132] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the first WCD comprises one or more of a UE, a RU, a DU, a CU or a relay, and wherein the second WCD comprises one or more of a UE, a RU, a DU, a CU or a relay.

[0133] although Figure 7 Example blocks of process 700 are shown, but in some aspects, process 700 may include Figure 7The blocks depicted may be additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted. Additionally or alternatively, two or more of the blocks of process 700 may be performed in parallel.

[0134] Figure 8 8 is a diagram illustrating an example process 800 performed, for example, by a second WCD according to the present disclosure. Example process 800 is an example of a WCD (e.g., a UE, a network node 110, a CU, a DU, a RU, and / or a relay) performing operations associated with error parameters for communications using DPoD at a receiving device.

[0135] like Figure 8 As shown, in some aspects, process 800 may include sending an indication of an error parameter associated with communications using DPoD at a first WCD (block 810). For example, a WCD (e.g., using communications manager 140 or 150 and / or Fig.10 Depicted transmitting component 1004) can transmit an indication of an error parameter associated with communications using the DPoD at the first WCD, as described above.

[0136] like Figure 8 As further shown, in some aspects, process 800 may include sending a communication to a first WCD based at least in part on the error parameter, wherein the communication has digital PAPR reduction applied thereto (block 820). For example, the WCD (e.g., using communication manager 140 or 150 and / or Fig.10 A transmitting component 1004 depicted in FIG. 1004 may transmit a communication to a first WCD based at least in part on the error parameter, wherein the communication has digital PAPR reduction applied, as described above.

[0137] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0138] In a first aspect, process 800 includes sending an indication of an additional error parameter associated with communications not using DPoD at the first WCD, and sending additional communications based at least in part on the additional error parameter.

[0139] In a second aspect, alone or in combination with the first aspect, the amount of allowed error associated with the error parameter is greater than the amount of allowed error associated with the additional error parameter.

[0140] In a third aspect, alone or in combination with one or more of the first and second aspects, the error parameter comprises an EVM parameter.

[0141] In a fifth aspect, alone or in combination with one or more of the first to third aspects, process 800 includes sending an indication of a function used to apply PAPR reduction to a second WCD.

[0142] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the indication of the function comprises one or more of: an indication of frequency selectivity, a clipping model, or one or more of a plurality of iterations used in the function, a selection of the function from a set of candidate functions for applying PAPR reduction, or a PAPR output of the function.

[0143] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the function used by the second WCD to apply PAPR reduction is based at least in part on one or more of negotiation of function parameters between the first WCD and the second WCD, an MCS of communication, a waveform of communication, or a rank of communication.

[0144] In a seventh aspect, either alone or in combination with one or more of aspects 1 to 6, the error parameter is associated with one or more of: an error in a transmitted signal as provided at an input of a power amplifier of a second WCD as in aspect 1 or an error in a transmitted signal as provided at an output of a power amplifier of the second WCD.

[0145] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, process 800 includes receiving an indication of support for error parameters associated with communications using DPoD at the WCD.

[0146] In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, process 800 includes receiving an indication of one or more parameters for selection of error parameters associated with communications using DPoD at the WCD.

[0147] In a tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the error parameter is based at least in part on one or more of an MCS of the communication, a waveform of the communication, or a rank of the communication.

[0148] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the first WCD includes one or more of a UE, a RU, a DU, a CU, or a relay, and wherein the second WCD includes one or more of a UE, a RU, a DU, a CU, or a relay.

[0149] although Figure 8 An example block diagram of process 800 is shown, but in some aspects, process 800 may include Figure 8The blocks depicted may be additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted. Additionally or alternatively, two or more of the blocks of process 800 may be performed in parallel.

[0150] Fig. 9 is a diagram of an example apparatus 900 for wireless communication according to the present disclosure. Apparatus 900 may be a first WCD, or the first WCD may include apparatus 900. In some aspects, apparatus 900 includes a receiving component 902 and a transmitting component 904, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 900 may communicate with another apparatus 906 (such as a UE, a base station, or another wireless communication device) using receiving component 902 and transmitting component 904. As further shown, apparatus 900 may include a communication manager 908 (e.g., communication manager 140 or 150).

[0151] In some aspects, the apparatus 900 may be configured to perform the Figures 5 and 6 Additionally or alternatively, the apparatus 900 may be configured to perform one or more processes described herein, such as Figure 7 In some aspects, the apparatus 900 and / or Fig. 9 One or more of the components shown may include a combination of Figure 2 Additionally or alternatively, Fig. 9 One or more of the components shown may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0152] The receiving component 902 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 906. The receiving component 902 may provide the received communications to one or more other components of the device 900. In some aspects, the receiving component 902 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to the one or more other components of the device 900. In some aspects, the receiving component 902 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described first WCD.

[0153] Transmit component 904 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 906. In some aspects, one or more other components of device 900 may generate communications and may provide the generated communications to transmit component 904 for transmission to device 906. In some aspects, transmit component 904 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 906. In some aspects, transmit component 904 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described first WCD. In some aspects, transmit component 904 can be co-located with receive component 902 in a transceiver.

[0154] Receiving component 902 can receive an indication of an error parameter associated with communications using DPoD at the first WCD. Receiving component 902 can receive components of a communication from a second WCD based at least in part on the error parameter, wherein the communication has digital PAPR reduction applied, and wherein receiving the communication includes application of DPoD to the communication.

[0155] Receiving component 902 can receive an indication of additional error parameters associated with communications not using DPoD at the first WCD.

[0156] Receiving component 902 can receive additional communications based at least in part on the additional error parameter.

[0157] Receiving component 902 can receive an indication of a function to be used to apply PAPR reduction to a second WCD.

[0158] Transmitting component 904 can transmit an indication of support for error parameters associated with communications using DPoD at the WCD.

[0159] Transmitting component 904 can transmit an indication of selected one or more parameters for error parameters associated with communications using DPoD at the WCD.

[0160] Fig. 9 The number and arrangement of components shown are provided as examples. In practice, there may be Fig. 9 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Fig. 9 Two or more components shown may be implemented in a single component, or Fig. 9 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig. 9 The illustrated set of component(s) may be described as being executable by Fig. 9 Another collection of components shown performs one or more functions.

[0161] Fig.10 1 is a diagram of an example apparatus 1000 for wireless communication according to the present disclosure. Apparatus 1000 may be a second WCD, or a second WCD may include apparatus 1000. In some aspects, apparatus 1000 includes a receiving component 1002 and a transmitting component 1004, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1000 may communicate with another apparatus 1006 (such as a UE, a base station, or another wireless communication device) using receiving component 1002 and transmitting component 1004. As further shown, apparatus 1000 may include a communication manager 1008 (e.g., communication manager 140 or 150).

[0162] In some aspects, the apparatus 1000 may be configured to perform the Figures 5 and 6 Additionally or alternatively, the apparatus 1000 may be configured to perform one or more processes described herein, such as Figure 8 In some aspects, the apparatus 1000 and / or Fig.10 One or more of the components shown may include a combination of Figure 2 Additionally or alternatively, Fig.10 One or more of the components shown may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0163] The receiving component 1002 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 1006. The receiving component 1002 may provide the received communications to one or more other components of the device 1000. In some aspects, the receiving component 1002 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of the device 1000. In some aspects, the receiving component 1002 may include combining Figure 2The second WCD may include one or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof.

[0164] Transmit component 1004 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1006. In some aspects, one or more other components of device 1000 may generate communications and may provide the generated communications to transmit component 1004 for transmission to device 1006. In some aspects, transmit component 1004 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 1006. In some aspects, transmit component 1004 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the second WCD. In some aspects, the transmit component 1004 can be co-located with the receive component 1002 in a transceiver.

[0165] Transmitting component 1004 can transmit an indication of an error parameter associated with communications using DPoD at the first WCD. Transmitting component 1004 can transmit communications to the first WCD based at least in part on the error parameter, wherein the communications have digital PAPR reduction applied thereto.

[0166] Transmitting component 1004 can transmit an indication of additional error parameters associated with communications not using DPoD at the first WCD.

[0167] A sending component 1004 sends an additional communication based at least in part on the additional error parameter.

[0168] Transmitting component 1004 can transmit an indication of a function used to apply PAPR reduction to the second WCD.

[0169] Receiving component 1002 can receive an indication of support for error parameters associated with communications using DPoD at the WCD.

[0170] Receiving component 1002 can receive an indication of one or more parameters for selection of an error parameter associated with communications using DPoD at the WCD.

[0171] Fig.10 The number and arrangement of components shown are provided as examples. In practice, there may be Fig.10 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Fig.10Two or more components shown may be implemented in a single component, or Fig.10 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig.10 The illustrated set of component(s) may be described as being executable by Fig.10 Another collection of components shown performs one or more functions.

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

[0173] Aspect 1: A method of wireless communication performed by a first wireless communication device (WCD), the method comprising: receiving an indication of an error parameter associated with a communication using digital post distortion (DPoD) at the first WCD; and receiving a communication from a second WCD based at least in part on the error parameter, wherein the communication has digital peak-to-average power ratio (PAPR) reduction applied, and wherein receiving the communication includes application of DPoD to the communication.

[0174] Aspect 2: The method of aspect 1, further comprising: receiving an indication of an additional error parameter associated with communications not using DPoD at the first WCD; and receiving additional communications based at least in part on the additional error parameter.

[0175] Aspect 3: The method according to aspect 2, wherein the amount of allowed error associated with the error parameter is greater than the amount of allowed error associated with the additional error parameter.

[0176] Aspect 4: The method according to any one of aspects 1 to 3, wherein the error parameter comprises an error vector magnitude (EVM) parameter.

[0177] Aspect 5: The method according to any one of aspects 1 to 4, further comprising: receiving an indication of a function used to apply PAPR reduction to the second WCD.

[0178] Aspect 6: The method of aspect 5, wherein the application of DPoD to the communication comprises: application of DPoD based at least in part on the function for applying PAPR reduction.

[0179] Aspect 7: A method according to any one of Aspects 5 to 6, wherein the indication of the function includes one or more of the following: an indication of frequency selectivity, a clipping model, or one or more of a plurality of iterations used in the function, a selection of the function from a set of candidate functions for applying PAPR reduction, or a PAPR output of the function.

[0180] Aspect 8: A method according to any one of Aspects 1 to 7, wherein the function used by the second WCD to apply PAPR reduction is based at least in part on one or more of the following: negotiation of function parameters between the first WCD and the second WCD, a modulation and coding scheme (MCS) of the communication, a waveform of the communication, or a rank of the communication.

[0181] Aspect 9: A method according to any one of Aspects 1 to 8, wherein the error parameter is associated with one or more of: an error in a transmitted signal as provided at an input of a power amplifier of the second WCD or an error in a transmitted signal as provided at an output of the power amplifier of the second WCD.

[0182] Aspect 10: The method of any one of aspects 1 to 9, further comprising sending an indication of support for error parameters associated with communications using DPoD at the WCD.

[0183] Aspect 11: The method of any of aspects 1 to 10, further comprising sending an indication of one or more parameters of the selection of the error parameter associated with communications using DPoD at the WCD.

[0184] Aspect 12: A method according to any one of Aspects 1 to 11, wherein the error parameter is based at least in part on one or more of: a modulation and coding scheme (MCS) of the communication, a waveform of the communication, or a rank of the communication.

[0185] Aspect 13: A method according to any one of Aspects 1 to 12, wherein the first WCD includes one or more of a user equipment (UE), a radio unit (RU), a distributed unit (DU), a control unit (CU), or a relay, and wherein the second WCD includes one or more of a UE, a RU, a DU, a CU, or a relay.

[0186] Aspect 14: A method of wireless communication performed by a second wireless communication device (WCD), the method comprising: sending an indication of an error parameter associated with a communication using digital post distortion (DPoD) at a first WCD; and sending a communication to the first WCD based at least in part on the error parameter, wherein the communication has digital peak-to-average power ratio (PAPR) reduction applied.

[0187] Aspect 15: The method of aspect 14, further comprising: sending an indication of an additional error parameter associated with communications not using DPoD at the first WCD; and sending additional communications based at least in part on the additional error parameter.

[0188] Aspect 16: The method according to aspect 15, wherein the amount of allowed error associated with the error parameter is greater than the amount of allowed error associated with the additional error parameter.

[0189] Aspect 17: The method according to any one of aspects 14 to 16, wherein the error parameter comprises an error vector magnitude (EVM) parameter.

[0190] Aspect 18: The method according to any one of aspects 14 to 17, further comprising: sending an indication of a function used to apply PAPR reduction to the second WCD.

[0191] Aspect 19: A method according to Aspect 18, wherein the indication of the function includes one or more of the following: an indication of frequency selectivity, a clipping model, or one or more of a plurality of iterations used in the function, a selection of the function from a set of candidate functions for applying PAPR reduction, or a PAPR output of the function.

[0192] Aspect 20: A method according to any one of Aspects 14 to 19, wherein the function used by the second WCD to apply PAPR reduction is based at least in part on one or more of: negotiation of function parameters between the first WCD and the second WCD, a modulation and coding scheme (MCS) of the communication, a waveform of the communication, or a rank of the communication.

[0193] Aspect 21: A method according to any one of Aspects 14 to 20, wherein the error parameter is associated with one or more of: an error in a transmitted signal as provided at an input of a power amplifier of the second WCD or an error in a transmitted signal as provided at an output of the power amplifier of the second WCD.

[0194] Aspect 22: The method of any one of aspects 14 to 21, further comprising: receiving an indication of support for error parameters associated with communications using DPoD at the WCD.

[0195] Aspect 23: The method of any one of aspects 14 to 22, further comprising: receiving an indication of one or more parameters for selection of the error parameter associated with communications using DPoD at the WCD.

[0196] Aspect 24: A method according to any one of Aspects 14 to 23, wherein the error parameter is based at least in part on one or more of: a modulation and coding scheme (MCS) of the communication, a waveform of the communication, or a rank of the communication.

[0197] Aspect 25: A method according to any one of Aspects 14 to 24, wherein the first WCD includes one or more of a user equipment (UE), a radio unit (RU), a distributed unit (DU), a control unit (CU), or a relay, and wherein the second WCD includes one or more of a UE, a RU, a DU, a CU, or a relay.

[0198] Aspect 26: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 1 to 25.

[0199] Aspect 27: A device for wireless communication, the device comprising a memory and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 1 to 25.

[0200] Aspect 28: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 1 to 25.

[0201] Aspect 29: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1 to 25.

[0202] Aspect 30: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 1 to 25.

[0203] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the various aspects.

[0204] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other names, "software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures and / or functions, etc. As used herein, a "processor" is implemented in a combination of hardware and / or hardware and software. It will be apparent that the systems and / or methods described herein can be implemented by a combination of hardware and / or hardware and software in different forms. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Therefore, there is no reference to a specific software code herein to describe the operation and behavior of the system and / or method, because those skilled in the art will understand that software and hardware can be designed to implement the system and / or method based at least in part on the description herein.

[0205] As used herein, "satisfying a threshold" may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0206] Although the specific combination of features is set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features can be combined in a manner that is not specifically described in the claims and / or is not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase "at least one of" the list of items refers to any combination of these items (it includes a single member). As an example, "at least one of a, b or c" is intended to cover a, b, c, a+b, a+c, b+c and a+b+c, and any combination with multiple identical elements (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c and c+c+c, or any other ordering of a, b and c).

[0207] Any element, action or instruction used herein should not be interpreted as key or necessary, unless explicitly described as such. In addition, as used herein, the article "one" is intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more items connected to the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items, and can be used interchangeably with "one or more". If only want to refer to a project, the phrase "only one" or similar terms will be used. In addition, as used herein, the terms "have", "have", "have" etc. are intended to be open terms, which do not limit the elements they modify (for example, "an element with" A can also have B). In addition, the phrase "based on" is intended to represent "based at least in part", unless otherwise explicitly stated. Furthermore, as used herein, the term "or" when used in a series is intended to be open-ended and used interchangeably with "and / or" unless explicitly stated otherwise (e.g., if used in conjunction with "either" or "only one of").

Claims

1. A first wireless communication device (WCD) for wireless communication, the first wireless communication device (WCD) comprising: Memory; and one or more processors coupled to the memory and configured to: receiving an indication of an error parameter associated with communications using digital post distortion (DPoD) at the first WCD; and A communication is received from a second WCD based at least in part on the error parameter, wherein the communication has digital peak-to-average power ratio (PAPR) reduction applied to it, and wherein the receiving of the communication includes application of DPoD to the communication.

2. The WCD of claim 1 , wherein the one or more processors are further configured to: receiving an indication of additional error parameters associated with communications not using DPoD at the first WCD; and Additional communications are received based at least in part on the additional error parameters.

3. The WCD of claim 2, wherein an amount of allowed error associated with the error parameter is greater than an amount of allowed error associated with the additional error parameter.

4. The WCD of claim 1, wherein the error parameter comprises an error vector magnitude (EVM) parameter.

5. The WCD of claim 1 , wherein the one or more processors are further configured to: An indication of a function to be used for applying PAPR reduction to the second WCD is received.

6. The WCD of claim 5, wherein the application of DPoD to the communication comprises: Application of the DPoD based at least in part on said function for applying PAPR reduction.

7. The WCD of claim 5 , wherein the indication of the function comprises one or more of: an indication of one or more of frequency selectivity, a clipping model, or a number of iterations used in the function, the selection of said function from a set of candidate functions for applying PAPR reduction, or The PAPR output of the function.

8. The WCD of claim 1 , wherein a function used by the second WCD to apply PAPR reduction is based at least in part on one or more of: negotiation of function parameters between the first WCD and the second WCD, the modulation and coding scheme (MCS) of the communication, the waveform of the communication, or The rank of the communication.

9. The WCD of claim 1 , wherein the error parameter is associated with one or more of: an error in the transmitted signal as provided at the input of the power amplifier of the second WCD, or An error in the transmitted signal as provided at an output of the power amplifier of the second WCD.

10. The WCD of claim 1 , wherein the one or more processors are further configured to: An indication of support for error parameters associated with communications using DPoD at the WCD is sent.

11. The WCD of claim 1 , wherein the one or more processors are further configured to: An indication of selected one or more parameters of the error parameter associated with communications using DPoD at the WCD is transmitted.

12. The WCD of claim 1 , wherein the error parameter is based at least in part on one or more of: the modulation and coding scheme (MCS) of the communication, the waveform of the communication, or The rank of the communication.

13. The WCD of claim 1, wherein the first WCD comprises one or more of a user equipment (UE), a radio unit (RU), a distributed unit (DU), a control unit (CU), or a relay, and The second WCD includes one or more of a UE, a RU, a DU, a CU or a relay.

14. A second wireless communication device (WCD) for wireless communication, the second wireless communication device (WCD) comprising: Memory; and one or more processors coupled to the memory and configured to: sending an indication of an error parameter associated with communications using digital post distortion (DPoD) at the first WCD; and A communication is sent to the first WCD based at least in part on the error parameter, wherein the communication has digital peak-to-average power ratio (PAPR) reduction applied to it.

15. The WCD of claim 14, wherein the one or more processors are further configured to: sending an indication of additional error parameters associated with communications not using DPoD at the first WCD; and Additional communications are sent based at least in part on the additional error parameters.

16. The WCD of claim 15, wherein an amount of allowed error associated with the error parameter is greater than an amount of allowed error associated with the additional error parameter.

17. The WCD of claim 14, wherein the error parameter comprises an error vector magnitude (EVM) parameter.

18. The WCD of claim 14, wherein the one or more processors are further configured to: An indication of a function to be used for applying PAPR reduction to the second WCD is sent.

19. The WCD of claim 18, wherein the indication of the function comprises one or more of: an indication of one or more of frequency selectivity, a clipping model, or a number of iterations used in the function, the selection of said function from a set of candidate functions for applying PAPR reduction, or The PAPR output of the function.

20. The WCD of claim 14, wherein the function used by the second WCD to apply PAPR reduction is based at least in part on one or more of: negotiation of function parameters between the first WCD and the second WCD, the modulation and coding scheme (MCS) of the communication, the waveform of the communication, or The rank of the communication.

21. The WCD of claim 14, wherein the error parameter is associated with one or more of: an error in the transmitted signal as provided at the input of the power amplifier of the second WCD, or An error in the transmitted signal as provided at an output of the power amplifier of the second WCD.

22. The WCD of claim 14, wherein the one or more processors are further configured to: An indication of support for error parameters associated with communications using DPoD at the WCD is received.

23. The WCD of claim 14, wherein the one or more processors are further configured to: An indication of one or more parameters for selection of the error parameter associated with communications using the DPoD at the WCD is received.

24. The WCD of claim 14, wherein the error parameter is based at least in part on one or more of: the modulation and coding scheme (MCS) of the communication, the waveform of the communication, or The rank of the communication.

25. The WCD of claim 14, wherein the first WCD comprises one or more of a user equipment (UE), a radio unit (RU), a distributed unit (DU), a control unit (CU), or a relay, and The second WCD includes one or more of a UE, a RU, a DU, a CU or a relay.

26. A method of wireless communication performed by a first wireless communication device (WCD), the method comprising: receiving an indication of an error parameter associated with communications using digital post distortion (DPoD) at the first WCD; as well as A communication is received from a second WCD based at least in part on the error parameter, wherein the communication has digital peak-to-average power ratio (PAPR) reduction applied to it, and wherein receiving the communication includes application of DPoD to the communication.

27. The method according to claim 26, further comprising: An indication of a function to be used for applying PAPR reduction to the second WCD is received.

28. The method of claim 27, wherein applying DPoD to the communication comprises: Application of the DPoD based at least in part on said function for applying PAPR reduction.

29. A method of wireless communication performed by a second wireless communication device (WCD), the method comprising: sending an indication of an error parameter associated with communications using digital post distortion (DPoD) at a first WCD; as well as A communication is sent to the first WCD based at least in part on the error parameter, wherein the communication has digital peak-to-average power ratio (PAPR) reduction applied to it.

30. The method according to claim 29, further comprising: An indication of a function to be used for applying PAPR reduction to the second WCD is sent.

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