Resource allocation for peak reduction tones

Abstract

Wireless communications techniques including techniques for allocating resources for peak reduction tones are discussed. A UE can receive, from a base station, an indication of one or more frequency resources allocated for uplink communications. The UE can also receive, from the base station, an indication of a subset of the one or more frequency resources allocated for uplink communications that is also allocated for transmission of one or more peak reduction tones. The UE can transmit, to the base station, at least one peak reduction tone on at least one frequency resource of the subset of the one or more frequency resources. Other aspects and features are also claimed and described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of U.S. Patent Application No. 17 / 370,794, entitled “RESOURCE ALLOCATION FOR PEAK REDUCTION TONES” filed July 8, 2021, and U.S. Provisional Patent Application No. 63 / 050,582, entitled “RESOURCE ALLOCATION FOR PEAK REDUCTION TONES” filed July 10, 2020, which are both hereby expressly incorporated by reference in their entirety. TECHNICAL FIELD

[0003] Aspects of the present disclosure relate generally to wireless communication systems, and more particularly to techniques for allocating resources for peak reduction tones in a wireless communication system. Certain embodiments of the techniques discussed below can enable and provide enhanced communication features and techniques for communication systems, including higher data rates, higher capacity, higher performance, better spectral efficiency, higher mobility, lower memory usage, and lower device power.

[0004] INTRODUCTION

[0005] Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcast, etc. These wireless networks can be multiple-access networks capable of supporting multiple users by sharing the available network resources. Such networks can be access networks that support communications for multiple users by sharing the available network resources. A wireless communication network can include a number of components. These components can include wireless communication devices such as a base station (or node B) that can support communication for a number of user equipments (UEs). A UE can communicate with a base station via the downlink and uplink. The downlink (or forward link) refers to the communication link from the base station to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the base station.

[0006] A base station can transmit data and control information on the downlink to a UE or can receive data and control information on the uplink from the UE. On the downlink, transmissions from the base station can encounter interference from transmissions by neighbor base stations or from other wireless radio frequency (RF) transmitters. On the uplink, transmissions from a UE can encounter interference from uplink transmissions of other UEs communicating with the neighbor base stations or from other wireless RF transmitters. This interference can degrade performance of both the downlink and uplink.

[0007] As the demand for mobile broadband access continues to increase, the possibilities of interference and congested networks grows with more UEs accessing long-range wireless communication networks and more short-range wireless systems being deployed in communities. Research and development continue to advance wireless technologies not only to meet the growing demand for mobile broadband access, but to advance and enhance the user experience with mobile communications.

[0008] SUMMARY

[0009] The following presents a simplified summary of some aspects of the disclosure in order to provide a basic understanding of the discussed technologies. This summary is not an extensive overview of all contemplated aspects of the disclosure, and is intended to neither identify key or critical elements of all aspects of the disclosure nor delineate the scope of any or all aspects of the disclosure. Its sole purpose is to present some concepts of one or more aspects of the disclosure in a simplified form as a prelude to the more detailed description that is presented later.

[0010] In one aspect of the disclosure, a method for wireless communication at a UE is provided. For example, the method can include receiving an indication of one or more frequency resources allocated for uplink communications. The method can also receive an indication of a subset of the one or more frequency resources allocated for uplink communications, the subset of the one or more frequency resources also allocated for transmission of one or more peak reduction tones. The method can further include transmitting at least one peak reduction tone on at least one frequency resource of the subset of the one or more frequency resources.

[0011] In another aspect of the disclosure, an apparatus for wireless communication is provided. For example, the apparatus can include means for receiving an indication of one or more frequency resources allocated for uplink communications. The apparatus can also include means for receiving an indication of a subset of the one or more frequency resources allocated for uplink communications, the subset of the one or more frequency resources also allocated for transmission of one or more peak reduction tones. The apparatus can further include means for transmitting at least one peak reduction tone on at least one frequency resource of the subset of the one or more frequency resources.

[0012] In an additional aspect of the disclosure, a non-transitory computer-readable medium having program code recorded thereon is provided. The program code can include program code executable by a computer to cause the computer to receive an indication of one or more frequency resources allocated for uplink communications. The program code can also include program code executable by a computer to cause the computer to receive an indication of a subset of the one or more frequency resources allocated for uplink communications, the subset of the one or more frequency resources also allocated for transmission of one or more peak reduction tones. The program code can further include program code executable by a computer to cause the computer to transmit at least one peak reduction tone on at least one frequency resource of the subset of the one or more frequency resources.

[0013] In another aspect of the disclosure, an apparatus for wireless communication is provided. The apparatus includes at least one processor and a memory coupled to the processor. The at least one processor can be configured to receive an indication of one or more frequency resources allocated for uplink communications. The at least one processor can also be configured to receive an indication of a subset of the one or more frequency resources allocated for uplink communications, the subset of the one or more frequency resources also allocated for transmission of one or more peak reduction tones. The at least one processor can further be configured to transmit at least one peak reduction tone on at least one frequency resource of the subset of the one or more frequency resources.

[0014] In an aspect of the disclosure, a method for wireless communication at a base station is provided. For example, the method can include transmitting an indication of one or more frequency resources allocated for uplink communications. The method can also transmit an indication of a subset of the one or more frequency resources allocated for uplink communications, the subset of the one or more frequency resources also allocated for transmission of one or more peak reduction tones. The method can further include receiving at least one peak reduction tone on at least one frequency resource of the subset of the one or more frequency resources.

[0015] In another aspect of the disclosure, an apparatus for wireless communication is provided. For example, the apparatus can include means for transmitting an indication of one or more frequency resources allocated for uplink communications. The apparatus can also include means for transmitting an indication of a subset of the one or more frequency resources allocated for uplink communications, the subset of the one or more frequency resources also allocated for transmission of one or more peak reduction tones. The apparatus can further include means for receiving at least one peak reduction tone on at least one frequency resource of the subset of the one or more frequency resources.

[0016] In an additional aspect of the disclosure, a non-transitory computer-readable medium having program code recorded thereon is provided. The program code can include program code executable by a computer to cause the computer to transmit an indication of one or more frequency resources allocated for uplink communication. The program code can also include program code executable by a computer to cause the computer to transmit an indication of a subset of the one or more frequency resources allocated for uplink communication, the subset of the one or more frequency resources also allocated for transmission of one or more peak reduction tones. The program code can further include program code executable by a computer to cause the computer to receive at least one peak reduction tone on at least one frequency resource of the subset of the one or more frequency resources.

[0017] In another aspect of the disclosure, an apparatus for wireless communication is provided. The apparatus includes at least one processor and a memory coupled to the processor. The at least one processor can be configured to transmit an indication of one or more frequency resources allocated for uplink communication. The at least one processor can also be configured to transmit an indication of a subset of the one or more frequency resources allocated for uplink communication, the subset of the one or more frequency resources also allocated for transmission of one or more peak reduction tones. The at least one processor can also be configured to receive at least one peak reduction tone on at least one frequency resource of the subset of the one or more frequency resources.

[0018] The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows can be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be readily utilized as bases for modifying or designing other for carrying out the same purposes thereof. Such equivalent constructions not only follow from the scope of the appended claims, but are intended to be encompassed thereby. The characteristics of the concepts disclosed herein both their organization and method of operation together with associated advantages will be better understood from the following description when considered in connection with the accompanying figures. Each figure is provided by way of illustration and description and not as a definition of the limits of the claims.

[0019] While aspects are described in the application by illustration of some examples, those skilled in the art will understand that additional implementations and use cases can come about in many different arrangements and scenarios. Innovations described herein can be implemented across many differing platform types, devices, systems, form factors, and configurations. For example, various aspects and / or uses can come about in the context of integrated chip implementations and other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail devices, shopping devices, medical devices, artificial intelligence (AI)-enabled devices, etc.). Some examples can or can not be exclusively related to or used in conjunction with specific types of devices, systems, or scenarios, although some examples can be so related. The scope of the present innovations can be appreciated by those skilled in the art along with the BRIEF DESCRIPTION OF DRAWINGS

[0021] A further understanding of the nature and advantages of the disclosure can be gained by reference to the following drawings. In the drawings, like components or features can have the same reference label. Furthermore, various components of the same kind can be distinguished by following the convention of placing the primary reference label followed by a dash and a secondary reference label that indicates the differentiation. If only the primary reference label is used, the description is applicable to any one of the similar components bearing the same primary reference label irrespective of the secondary reference label.

[0022] Figure 1 is a block diagram illustrating details of a wireless communication system in accordance with some aspects of the disclosure.

[0023] Figure 2 is a block diagram conceptually illustrating a design of a base station and a UE configured in accordance with some aspects of the disclosure.

[0024] Figure 3 is a block diagram illustrating a method for resource allocation for peak reduction tones (PRTs) in accordance with some aspects of the disclosure.

[0025] Figure 4is another diagram that illustrates another method of resource allocation for PRT in accordance with some aspects of the present disclosure.

[0026] Figure 5 is a block diagram conceptually illustrating a design of a UE configured in accordance with some aspects of the present disclosure.

[0027] Figure 6 is a block diagram conceptually illustrating a design of a base station, e.g., gNB, configured in accordance with some aspects of the present disclosure.

[0028] DETAILED DESCRIPTION

[0029] The detailed description set forth below, in connection with the appended drawings and embodiments described herinin, is intended as a description of various configurations and is not intended to limit the scope of the disclosure. Rather, the detailed description includes specific details for the purpose of providing a thorough understanding of the inventive subject matter. It will be apparent to those skilled in the art, from this detailed description, that the

[0030] The present disclosure relates generally to providing or participating in an authorized shared access between two or more wireless devices in one or more wireless communication systems, also referred to as wireless communications networks. In various implementations, the techniques and apparatus can be used for wireless communication networks such as code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, single-carrier FDMA (SC-FDMA) networks, LTE networks, GSM networks, 5thGeneration (5G) or new radio (NR) networks (sometimes referred to as “5G NR” networks / devices / systems) and other communications networks. As described herein, the terms “network” and “system” can be used interchangeably.

[0031] A CDMA network, for example, can implement a radio technology such as universal terrestrial radio access (UTRA), cdma2000, and so on. UTRA includes wideband-CDMA (W-CDMA) and low chip rate (LCR). CDMA2000 covers IS-2000, IS-95, and IS-856 standards.

[0032] A TDMA network can implement a radio technology such as Global System for Mobile Communications (GSM). The third Generation Partnership Project (3GPP) defines standards for the GSM EDGE (enhanced data rates for GSM evolution) radio access network (RAN), also denoted as GERAN. GERAN is the radio component of a GSM / EDGE network alongside the Base Station Controller (BSC) and Gateway General Packet Radio Service (GPRS) Support Node (GGSN). The radio access network represents the component of a GSM network that phones and packet data route to and from the Public Switched Telephone Network (PSTN) and Internet to and from subscriber handsets, also known as user terminals or user equipment (UE). A mobile phone operator's network can include one or more GERANs, which can couple with a Universal Terrestrial Radio Access Network (UTRAN) in the case of a UMTS / GSM network. Additionally, an operator network can also include one or more LTE networks, and / or one or more other networks. The various different network types can use different radio access technologies (RATs) and radio access networks (RANs).

[0033] An OFDMA network can implement a radio technology such as evolved UTRA (E- UTRA), Institute of Electrical and Electronics Engineers (IEEE) 802.11, IEEE 802.16, IEEE 802.20, flash-OFDM, etc. UTRA, E-UTRA, and Global System for Mobile Communications (GSM) are part of universal mobile telecommunication system (UMTS). In particular, long term evolution (LTE) is a release of UMTS that uses E-UTRA. UTRA, E-UTRA, GSM, UMTS, and LTE are described in documents from the organization named “3rd Generation Partnership Project” (3GPP) and cdma2000 is described in documents from an organization named “3rd Generation Partnership Project 2” (3GPP2). These various radio technologies and standards are known or are being developed. For example, the 3GPP is a collaboration between groups of telecommunications associations that aims to define a globally applicable third generation (3G) mobile phone specification. 3GPP long term evolution (LTE) is a 3GPP project aimed at improving the universal mobile telecommunications system (UMTS) mobile phone standard. 3GPP can define specifications for the next generation of mobile networks, mobile systems, and mobile devices. The present disclosure can describe certain aspects with reference to LTE, 4G, or 5G NR technology; however, such description is not intended to be limited to a particular technology or application, and one or more aspects described with reference to one technology can be understood as applicable to another technology. Additionally, one or more aspects of the present disclosure can relate to shared access to wireless spectrum between networks using different radio access technologies or radio air interfaces.

[0034] 5G networks contemplate diverse deployments, diverse spectrum, and diverse services and devices that can be implemented using a common, OFDM- based unified air interface. To meet these goals, further enhancements to LTE and LTE-A are considered in addition to development of the new radio technology for 5G NR networks. 5G NR will be capable of scaling to meet the requirements of diverse deployments and services that can be lower power, lower cost, machine- type, and / or can require low latency and high reliability. The 5G NR can support multiple spectrum divisions, licensed, unlicensed, and shared. It is designed to efficiently 2 support a broad range of use cases including: (1) massive Internet of Things (IoT), which can provide ultra-high density and low power connectivity with a scale of ~1M cells / km2, ~500k nodes per cell, and ~10+ years of battery life; (2) mobile broadband (MBB) that can provide high capacity and high speed connectivity with a scale of ~10Tbps / km2, ~100Mbps user experienced rates, and high mobility; and (3) critical communications that can provide high reliability and low latency connectivity with a scale of ~10,000 cells / km2, ~99.99% reliability, and ~1ms latency. 2

[0035] 5G NR devices, networks, and systems can be implemented to use optimized OFDM-based waveform characteristics. These characteristics can include: scalable numerology and transmission time interval (TTI); common, flexible framework to efficiently multiplex services and features using dynamic low latency time division duplex (TDD) / frequency division duplex (FDD) design; and advanced wireless technologies such as massive multiple input, multiple output (MIMO), robust millimeter wave (mmWave) transmissions, advanced channel coding, and device-centric mobility. Scalability of the numerology in 5G NR (and scaling of subcarrier spacing) can efficiently address operation across diverse spectrum and diverse deployments for diverse services. For example, in various outdoor and macro coverage deployments of sub-3GHz FDD / TDD implementations, subcarrier spacing can occur with 15 kHz, for example, over 1, 5, 10, 20 MHz bandwidths. For other various outdoor and small cell coverage deployments of TDD greater than 3 GHz, subcarrier spacing can occur with 30 kHz over 80 / 100 MHz bandwidths. For other various indoor wideband implementations, by using TDD over the unlicensed portion of the 5 GHz band, subcarrier spacing can occur with 60 kHz over 160 MHz bandwidths. Finally, for various deployments transmitting with mmWave components at 28 GHz in TDD, subcarrier spacing can occur with 120 kHz over 500 MHz bandwidths.

[0036] ​The scalable numerology of 5G NR enables scalable TTIs to meet various latency and quality of service (QoS) requirements. For example, shorter TTIs can be used for low latency and high reliability, while longer TTIs can be used for higher spectral efficiency. Efficient multiplexing of short and long TTIs allows transmissions to start on symbol boundaries. 5G NR also envisions a self-contained integrated subframe design with uplink / downlink scheduling information, data, and acknowledgements in the same subframe. The self-contained integrated subframe supports communications in unlicensed or contention-based shared spectrum, adaptive uplink / downlink that can be flexibly configured on a per-cell basis to dynamically switch between uplink and downlink to meet current traffic needs.

[0037] For clarity, certain aspects of the apparatus and techniques can be described below with reference to example 5G NR implementations or in an exclusively 5G terminology as illustrative examples; however, the description herein is not intended to be limited to 5G applications.

[0038] Moreover, it should be understood that, in operation, wireless communication networks adapted according to the concepts herein can operate with any combination of licensed or unlicensed spectrum depending on load and availability. Accordingly, it will be apparent to one of ordinary skill in the art that the systems, apparatus and methods described herein can be applied to other communications systems and applications besides the particular examples provided.

[0039] While aspects are described in the context of some examples, those skilled in the art will appreciate that the innovation described herein can be embodied in a wide variety of contexts and applications. The innovation described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, implementations and / or uses can occur in the context of integrated chip implementations and / or other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing devices, medical devices, AI-enabled devices, and / or the like). While some examples can or can not be specifically directed to use cases or applications, a wide variety of applicability of the described innovation can occur. Implementations can range from small, low power, lightweight devices to large, power-provisioned, heavy-duty systems. The breadth of potential implementations will depend on the particular application and the many factors governing such applications. For example, in some embodiments, one or more of the components described can be located on a single chip. In other embodiments, each of the components described can be located on a separate chip.

[0040] Figure 1 is a block diagram illustrating details of an example wireless communication system. The wireless communication system can include a wireless network 100. The wireless network 100 can include, for example, a 5G wireless network. As those skilled in the art will appreciate, the Figure 1 The components occurring in the various drawings are likely to have related counterpart parts in other network arrangements, including, for example, cellular network arrangements and non-cellular network arrangements (e.g., device-to-device or peer-to-peer or ad hoc network arrangements, etc.).

[0041] Figure 1 The wireless network 100 illustrated in FIG. 1 includes a number of base stations 105 and other network entities. A base station can be a station that communicates with UEs and can also be referred to as an evolved node B (eNB), a next generation eNB (gNB), an access point, and the like. Each base station 105 can provide communication coverage for a particular geographic area. In 3GPP, the term “cell” can refer to this particular geographic coverage area of a base station and / or a base station subsystem serving the coverage area, depending on the context in which the term is used. In implementations of the wireless network 100 herein, the base stations 105 can be associated with a same operator or different operators (e.g., the wireless network 100 can include a plurality of operator wireless networks). Additionally, in implementations of the wireless network 100 herein, the base stations 105 can provide wireless communication using one or more of the same frequencies (e.g., one or more bands in a licensed spectrum, an unlicensed spectrum, or a combination thereof) as a neighboring cell. In some examples, an individual base station 105 or UE 115 can be operated by more than one network operating entity. In some other examples, each base station 105 and UE 115 can be operated by a single network operating entity.

[0042] A base station can be a macro cell or a small cell (such as a femto cell or a pico cell), and / or other types of cells, etc. A macro cell generally covers a relatively large geographic area (e.g., having a radius of a few kilometers) and can allow unrestricted access by UEs with service subscriptions with the network provider. A small cell such as a femto cell generally covers a relatively small geographic area and can allow restricted access by UEs such as UEs in an associated closed subscriber group (CSG), UEs for users in a home, etc. A base station for a macro cell can be referred to as a macro base station. A base station for a small cell can be referred to as a small cell base station, a femto base station, or a home base station, etc. In implementations of the wireless network 100 herein, base stations 105 can be in communication with a core network 130, which can be in communication with additional networks, such as the Internet. Figure 1In the example shown, base stations 105d and 105e are regular macro base stations, while base stations 105a- 105c are macro base stations that enable one of three- dimensional (3D), full-dimensional (FD), or massive MIMO. Base stations 105a- 105c utilize their higher dimension MIMO capabilities to increase coverage and capacity with 3D beamforming in both altitude and azimuth. Base station 105f is a small cell base station, which can be a home node or a portable access point. A base station can support one or multiple (e.g., two, three, four, etc.) cells.

[0043] Wireless network 100 can support synchronous or asynchronous operation. For synchronous operation, the base stations can have similar frame timings, and transmissions from different base stations can be approximately aligned in time. For asynchronous operation, the base stations can have different frame timings, and transmissions from different base stations can not be aligned in time. In some scenarios, the network can be implemented or configured to handle dynamic switching between synchronous or asynchronous operations.

[0044] The UEs 115 are dispersed throughout the wireless network 100, and each UE can be stationary or mobile. It should be appreciated that, although a mobile apparatus is commonly referred to as a user equipment (UE) in standards and specifications promulgated by the 3 GPP, such apparatus can additionally or otherwise be referred to by those skilled in the art as a mobile station (MS), a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal (AT), a mobile terminal, a wireless terminal, a remote terminal, a handset, a terminal, a user agent, a mobile client, a client, a gaming device, an augmented reality device, a vehicular component device / module, or some other suitable terminology. Within the present document, a “mobile” apparatus or UE need not necessarily have a capability to move, and can be stationary. Some non-limiting examples of a mobile apparatus, such as one or more of the UEs 115, include implementations of a mobile station, a cellular (cell) phone, a smartphone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a laptop, a personal computer (PC), a notebook, a netbook, a smartbook, a tablet, and a personal digital assistant (PDA). A mobile apparatus can additionally be an “Internet of Things” (IoT) or “Internet of Everything” (IoE) device such as an automobile or other transportation vehicle, a satellite radio, a global positioning system (GPS) device, a logistics controller, a drone, a multi-copter, a quad-copter, a smart energy or security device, a solar panel or solar array, civic lighting, water or other infrastructure; industrial automation and enterprise devices; consumer and wearable devices, such as eyewear, a wearable camera, a smartwatch, a health or fitness tracker, a mammal-implantable device, a gesture tracking device, a medical device, a digital audio player (e.g., MP3 player), a camera, a game console, etc.; and a digital home or smart home device, such as a home audio, video, and multimedia device, a Figure 1 The implementation of the UE 115a-115d illustrated in FIG. 1A is an example of a mobile smart phone type device accessing the wireless network 100. UEs can also be machines specifically configured to connect to the network for connected communication, including machine type communication (MTC), enhanced MTC (eMTC), narrowband IoT (NB-IoT), and so on. Figure 1 The UEs 115e-115k illustrated in FIG. 1A are examples of various machines configured to access the wireless network 100.

[0045] A mobile apparatus, such as a UE 115, can be able to communicate with any type of base station, whether macro base station, small cell base station, femtocell base station, relay, etc. In Figure 1 In general, communication links (represented as lines) indicate wireless transmissions between a UE and a serving base station, which is a base station designated to serve the UE on the downlink and / or uplink, or desired transmission between base stations, and backhaul transmission between base stations. In some scenarios, a UE can act as a base station or other network node. Backhaul communication between base stations of the wireless network 100 can occur using wired and / or wireless communication links.

[0046] In operation of the wireless network 100, base stations 105a- 105c serve UEs 115a and 115b using 3D beamforming and coordinated spatial techniques, such as coordinated multipoint (CoMP) or multi-connectivity. Macro base station 105d performs backhaul

[0047] Implementations of the wireless network 100 support mission critical communications with ultra-reliable and redundant links for mission critical devices, such as UE 115e, which is an unmanned aerial vehicle. Redundant communication links with UE 115e include from macro base stations 105d and 105e, as well as small cell base station 105f. Other machine type devices, such as UE 115f (thermometer), UE 115g (smart meter), and UE 115h (wearable device) can communicate through the wireless network 100 either directly with base stations, such as small cell base station 105f, and macro base station 105e, or through

[0048] Figure 2 Block diagrams illustrating example designs of base stations 105 and UEs 115, which can be Figure 1For a restricted association scenario (as mentioned above), the base station 105 may be Figure 1 The small cell base station 105f in the example of FIG. 105 is a base station of a wireless communication network. The UE 115 may be a UE 115c or 115D operating in the service area of ​​the base station 105f. In order to access the small cell base station 105f, the UE 115 will be included in the accessible UE list of the small cell base station 105f. The base station 105 may also be a base station of some other type. Figure 2 As shown in , the base station 105 may be equipped with antennas 234a through 234t, and the UE 115 may be equipped with antennas 252a through 252r, for facilitating wireless communication.

[0049] At the base station 105, the transmit processor 220 may receive data from the data source 212 and control information from the controller / processor 240. The control information may be used for the physical broadcast channel (PBCH), the physical control format indicator channel (PCFICH), the physical hybrid ARQ (automatic repeat request) indicator channel (PHICH), the physical downlink control channel (PDCCH), the enhanced physical downlink control channel (EPDCCH), the MTC physical downlink control channel (MPDCCH), etc. Data may be used for the PDSCH, etc. Additionally, the transmit processor 220 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively. The transmit processor 220 may also generate reference symbols, such as for the primary synchronization signal (PSS) and the secondary synchronization signal (SSS), as well as cell-specific reference signals. The transmit (TX) multiple-input, multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols, as applicable, and may provide output symbol streams to modulators (MODs) 232a through 232t. For example, the spatial processing performed on the data symbols, control symbols, or reference symbols may include precoding. Each modulator 232 may process its respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may additionally or alternatively process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 232a through 232t may be transmitted via antennas 234a through 234t, respectively.

[0050] At the UE 115, the antennas 252a through 252r can receive the downlink signals from the base station 105 and can provide received signals to the demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples. Each demodulator 254 can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 can obtain received symbols from the demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 can process (e.g., demodulate, deinterleave, and decode) the detected symbols, providing decoded data for the UE 115 to a data sink 260, and provide decoded control information to a controller / processor 280.

[0051] On the uplink, at the UE 115, a transmit processor 264 can receive and process data (e.g., for the physical uplink shared channel (PUSCH)) from a data source 262 and control information (e.g., for the physical uplink control channel (PUCCH)) from the controller / processor 280. Additionally, the transmit processor 264 can also generate reference symbols for a reference signal. The symbols from the transmit processor 264 can be precoded by a TX MIMO processor 266 if applicable, further processed by the modulators 254a through 254r (e.g., for SC-FDM, etc.), and transmitted to the base station 105. At the base station 105, the uplink signals from the UE 115 can be received by the antennas 234, processed by the demodulators 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by the UE 115. The processor 238 can provide the decoded data to a data sink 239 and the decoded control information to a controller / processor 240.

[0052] The controllers / processors 240 and 280 can direct the operation at the base station 105 and the UE 115, respectively. The controller / processor 240 and / or other processors and modules at the base station 105 and / or the controller / processor 280 and / or other processors and modules at the UE 115 can perform or direct the execution of various processes for the techniques described herein, such as to perform or direct the execution of the processes described in connection with FIGs. 1-3, and / or other processes for the techniques described herein. Memories 242 and 282 can store data and program codes for the base station 105 and the UE 115, respectively. A scheduler 244 can schedule UEs for data transmission on the downlink and / or uplink. Figure 3 and Figure 4 The controllers / processors 240 and 280 can direct the operation at the base station 105 and the UE 115, respectively. The controller / processor 240 and / or other processors and modules at the base station 105 and / or the controller / processor 280 and / or other processors and modules at the UE 115 can perform or direct the execution of various processes for the techniques described herein, such as to perform or direct the execution of the processes described in connection with FIGs. 1-3, and / or other processes for the techniques described herein. Memories 242 and 282 can store data and program codes for the base station 105 and the UE 115, respectively. A scheduler 244 can schedule UEs for data transmission on the downlink and / or uplink.

[0053] Wireless communications systems operated by different network operating entities (e.g., network operators) can share spectrum. In some instances, a network operating entity can be configured to use an entire designated shared spectrum for at least a time period, after which another network operating entity uses the entire designated shared spectrum for a different time period. Thus, to allow network operating entities to use the full designated shared spectrum, and to mitigate interfering communications between different network operating entities, certain resources (e.g., time) can be partitioned and allocated to different network operating entities for certain types of communications.

[0054] For example, a network operating entity can be allocated certain time resources that are reserved for exclusive communications by that network operating entity using the entire shared spectrum. The network operating entity can also be allocated other time resources in which the entity has priority for using the shared spectrum for communications over other network operating entities. These time resources that are prioritized for use by the network operating entity can be utilized by other network operating entities on an opportunistic basis if the prioritized network operating entity does not utilize the resources. Additional time resources can be allocated for any network operator to use on an opportunistic basis.

[0055] Access to the shared spectrum and arbitration of time resources among different network operating entities can be centrally controlled by a separate entity, determined autonomously through a predefined arbitration scheme, or dynamically determined based on interactions between wireless nodes of the network operators.

[0056] In some cases, UEs 115 and base stations 105 can operate in a shared radio frequency spectrum band, which can include a licensed or unlicensed (e.g., contention-based) frequency spectrum. In an unlicensed frequency portion of the shared radio frequency spectrum band, UEs 115 or base stations 105 can traditionally perform a medium-sensing procedure to contend for access to the spectrum. For example, UEs 115 or base stations 105 can perform a listen before talk or listen before transmit (LBT) procedure, such as a clear channel assessment (CCA), prior to communicating in order to determine whether the shared channel is available. In some implementations, the CCA can include an energy detection procedure to determine whether there are any other active transmissions. For example, a device can conclude that a change in a received signal strength indicator (RSSI) of a power meter indicates that the channel is occupied. In particular, signal power that is concentrated in a certain bandwidth and that exceeds a predetermined noise floor can indicate another wireless transmitter. The CCA can also include detection of certain sequences indicating use of the channel. For example, another device can transmit a particular preamble before transmitting a data sequence. In some cases, an LBT procedure can include a wireless node adjusting its own back-off window based on the amount of energy detected on the channel and / or acknowledgement / negative-acknowledgement (ACK / NACK) feedback for its own transmissions as a proxy for collisions.

[0057] In some aspects of the disclosure, wireless communications utilizing orthogonal frequency division multiplexing (OFDM) can exhibit a high peak-to-average power ratio (PAPR). High PAPR is generally undesirable because it often requires a substantial reduction in transmission power, which in turn can result in reduced transmission power efficiency and / or reduced overall transmission data rates.

[0058] PAPR can be reduced in many ways, such as through the use of peak reduction tones (PRTs). As disclosed herein, a tone can refer to a signal transmitted at certain frequency resources (e.g., subcarriers), and a PRT can refer to a tone transmitted in order to reduce the time-domain peaks of another signal, such as a data signal. That is, a PRT can adjust the shape of a time-domain representation of a data signal such that the time-domain peaks of the data signal are reduced. Many PRTs can be transmitted to reduce many peaks in a signal, e.g., to adjust the shape of a time-domain representation of a data signal. For example, data can be transmitted using certain frequency resources in the frequency domain, and the transmitted data can be associated with certain time-domain representations, e.g., a time-domain data signal. Along with the data, PRTs can be transmitted using frequency resources in the frequency domain. In the time domain, when the time-domain representation of the transmitted PRTs is combined with the time-domain representation of the transmitted data signal, the PRTs can reduce some of the peaks of the time-domain data signal. As a result, the PAPR associated with the transmission of the data signal can be reduced.

[0059] Generally, PRTs are transmitted only on frequency resources that are orthogonal to the frequency resources used for data transmission. In other words, generally, the relationship between data tones and PRTs is not known. However, such a limitation on the frequency resources available for PRTs can result in suboptimal PAPR reduction.

[0060] Aspects of the disclosure can provide enhanced techniques for allocating resources for PRTs. For example, in some aspects, resources can not be limited to only frequency resources that are orthogonal to the frequency resources used for data transmission. As an example, Figure 3 A block diagram illustrating a method of resource allocation for PRTs in accordance with some aspects of the disclosure is shown. Aspects of the method 300 can be implemented with the various other aspects of the disclosure described with reference to Figures 1-2 and 5, such as a mobile device / UE. For example, with reference to Figure 2 The controller / processor 280 of the UE 115 can control the UE 115 to perform the method 300.

[0061] Various example blocks of the method 300 will also be described with reference to the UE 115 as illustrated in Figure 5 . Figure 5 is a block diagram conceptually illustrating a design of a UE configured in accordance with some aspects of the disclosure. The UE 115 can include various structures, hardware, and components, such as for Figure 2Those structures, hardware, and components of UE 115 are illustrated in, for example, FIG. 2. For example, UE 115 includes a controller / processor 280, which operates to execute logic or computer instructions stored in memory 282. Controller / processor 280 can further control the components of UE 115 to provide the features and functionality of UE 115. UE 115, under control of controller / processor 280, transmits and receives signals via wireless radios 501a-r and antennas 252a-r. Wireless radios 501a-r include various components and hardware as illustrated in, for example, FIG. 2, including modulators / demodulators 254a-r, MIMO detector 256, receive processor 258, transmit processor 264, and TX MIMO processor 266. For purposes of controlling communication operations, controller / processor 280 can be provided with digital signals obtained from analog wireless signals received by antennas 252a-r. Figure 2

[0062] Figure 3 Method 300, which can be performed by a wireless communication device such as UE 115, is illustrated. Method 300 includes, at block 302, the UE receiving an indication of one or more frequency resources allocated for uplink communications. Similarly, as described below with respect to Figure 4 block 302, a base station such as gNB 105 can transmit an indication of one or more frequency resources allocated for uplink communications.

[0063] In some aspects, uplink communications can refer to the transmission of control information and / or data information from a UE to a base station. For example, uplink communications, as illustrated by block 302, can refer to information transmitted on a PUCCH and / or PUSCH. As a particular example, uplink communications can include the transmission of uplink demodulation reference signals (DMRS). Figure 3

[0064] According to some aspects, a frequency resource for wireless communication can refer to a single frequency resource element (RE) or a group of frequency resource elements. In some aspects, a single frequency resource can be referred to as a subcarrier, and can correspond to the smallest unit of frequency of a wireless communication system that can be allocated (e.g., mapped or made available) for the transmission and / or reception of information, such as control information, data information, and / or PRTs. In additional aspects of the disclosure, a group of frequency resources can be referred to as a resource block (RB), such that a RB can be allocated (e.g., mapped or made available) for the transmission and / or reception of information, such as control information, data information, and / or PRTs. In some aspects of the disclosure, for example, one or more frequency resources allocated (e.g., mapped or made available) for uplink communications, as illustrated by block 302, can refer to one or more RBs. Figure 3 ​​In some aspects, the one or more frequency resources allocated for transmission of the one or more PRTs can include one or more subcarriers and / or one or more RBs.

[0065] In some aspects, the UE can also transmit PRTs to reduce the PAPR associated with uplink communications, e.g., information transmitted on the PUCCH and / or PUSCH, such as uplink DMRS. In other words, PRTs can be transmitted with uplink communications. The frequency resources used for PRTs can also be designated by a base station, such as the gNB 105. The designated frequency resources to be used for PRTs can include only resources used for uplink communications, only resources not used for uplink communications, or a combination of resources used for uplink communications and resources not used for uplink communications.

[0066] According to some aspects, the UE can be informed by a base station of frequency resources that have been allocated for uplink communications, which can also be allocated for transmission of one or more PRTs. For example, the method 300 includes, at block 304, the UE receiving an indication of a subset of one or more frequency resources allocated for uplink communications, which are also allocated for transmission of one or more PRTs. Similarly, as described below with reference to FIG. 4, a base station, such as the gNB 105, can transmit an indication of a subset of one or more frequency resources allocated for uplink communications, which are also allocated for transmission of one or more PRTs. In some aspects, the subset of frequency resources allocated for both uplink communications and transmission of one or more PRTs can be used by the UE to transmit both uplink information and PRTs to the base station. Figure 4

[0067] In some aspects, the UE can also be informed by a base station of frequency resources that have not been allocated for uplink communications, which can also be allocated for transmission of one or more PRTs. For example, the UE can receive an indication of another one or more frequency resources allocated for transmission of one or more PRTs. Similarly, the base station can transmit an indication of another one or more frequency resources allocated for transmission of one or more PRTs. In some aspects, the other one or more frequency resources can not include the one or more frequency resources. In other words, the other one or more frequency resources can not include the subset of the one or more frequency resources allocated for uplink communications. According to some aspects, the one or more frequency resources that can not include the subset of the one or more frequency resources allocated for uplink communications can still be used by the UE to transmit PRTs to the base station.

[0068] ​According to some aspects of the present disclosure, a UE can transmit PRTs in accordance with one or more indications of frequency resources allocated for transmission of one or more PRTs. For example, the method 300 includes, at block 306, the UE transmitting at least one PRT on at least one frequency resource of the subset of one or more frequency resources. In some aspects, the UE can also transmit at least one other PRT on at least one frequency resource of the one or more frequency resources, which can not include the subset of one or more frequency resources allocated for uplink communications. Similarly, as described below with reference to Figure 4 According to some aspects of the present disclosure, a UE can transmit PRTs in accordance with one or more indications of frequency resources allocated for transmission of one or more PRTs. For example, the method 300 includes, at block 306, the UE transmitting at least one PRT on at least one frequency resource of the subset of one or more frequency resources. In some aspects, the UE can also transmit at least one other PRT on at least one frequency resource of the one or more frequency resources, which can not include the subset of one or more frequency resources allocated for uplink communications. Similarly, as described below with reference to

[0069] In some aspects, a frequency resource for wireless communication can be used for both transmitting an information signal (e.g., control or data information) and a PRT. For example, when a UE transmits a PRT on a frequency resource of the subset of one or more frequency resources allocated for uplink communications, the UE can transmit both the information signal and the PRT using the same frequency resource during the same time span, e.g., as illustrated in block 306 of FIG. 3. Figure 3 In some aspects, the PRT can be added to the information signal to be transmitted using the one or more frequency resources allocated for uplink communications. According to some aspects, the PRT can be added to the information signal such that the PRT is only present in the subset of frequency resources allocated for both uplink communications (i.e., transmission of uplink information) and the PRT.

[0070] According to some aspects, the indication of the subset of the one or more frequency resources allocated for both uplink communications and transmission of the one or more PRTs can include various types of indications. For example, in some aspects, the indication can include an indication of a frequency offset between a frequency resource in the subset of the one or more frequency resources and a frequency resource in the one or more frequency resources allocated for uplink communications. According to some aspects, the frequency offset can be specified as a number of RBs and / or a number of subcarriers. In some aspects, the frequency resource in the subset of the one or more frequency resources used as a reference for the frequency offset indication can be the frequency resource in the subset of the one or more frequency resources having the lowest frequency or the frequency resource in the subset of the one or more frequency resources having the highest frequency. In other aspects, the frequency resource in the subset of the one or more frequency resources used as a reference for the frequency offset indication can be the frequency resource in the subset of the one or more frequency resources having the most central frequency. According to some aspects, the frequency resource in the one or more frequency resources allocated for uplink communications used as a reference for the frequency offset indication can be the frequency resource in the one or more frequency resources allocated for uplink communications having the lowest frequency or the frequency resource in the one or more frequency resources allocated for uplink communications having the highest frequency. In other aspects, the frequency resource in the one or more frequency resources allocated for uplink communications used as a reference for the frequency offset indication can be the frequency resource in the one or more frequency resources allocated for uplink communications having the most central frequency. For example, the frequency resource used as a reference can be the first or last frequency resource of the PUSCH.

[0071] In some aspects of the disclosure, the frequency offset indication can be according to one or more time resources allocated for at least one of uplink communications or transmission of the one or more PRTs. In other words, the frequency offset indication can be transmitted by a base station, and / or received by a UE, according to one or more time resources allocated for at least one of uplink communications or transmission of the one or more PRTs. In some aspects, a time resource can refer to a single time resource element or a group of time resource elements. In some aspects, a single time resource can be referred to as a symbol and can correspond to the smallest unit of a time period of a wireless communications system that can be allocated (e.g., mapped or made available) for transmission and / or reception of information, such as control information, data information, and / or PRTs. In additional aspects of the disclosure, a group of time resources (e.g., a group of symbols) can be referred to as a mini-slot, a slot, a subframe, a frame, and / or the like, such that a group of symbols, such as a mini-slot or a slot, can be allocated (e.g., mapped or made available) for transmission and / or reception of information, such as control information, data information, and / or PRTs.

[0072] According to some aspects, the frequency offset indication can be determined, transmitted, and / or received in accordance with or based on one or more time resources allocated for at least one of the uplink communication or the transmission of the one or more PRTs. For example, in some aspects, the frequency offset indication can be different for different time resources allocated for at least one of the uplink communication or the transmission of the one or more PRTs. As a particular example, a first frequency offset indication for frequency resources associated with a first time resource (such as a first symbol or a first slot) allocated for at least one of the uplink communication or the transmission of the one or more PRTs can be different than a second frequency offset indication for frequency resources associated with a second time resource (such as a second symbol or a second slot) allocated for at least one of the uplink communication or the transmission of the one or more PRTs. Accordingly, in some aspects, the indication of the subset of one or more frequency resources allocated for both the uplink communication and the transmission of the one or more PRTs can include an indication of one or more frequency offsets associated with one or more time resources allocated for at least one of the uplink communication or the transmission of the one or more PRTs.

[0073] In some aspects, the indication of the subset of one or more frequency resources allocated for both the uplink communication or the transmission of the one or more PRTs can include a number of contiguous frequency resources included in the subset of one or more frequency resources. According to some aspects, the contiguous frequency resources can be contiguous subcarriers. In some aspects, the contiguous frequency resources can be contiguous RBs. According to some aspects, when the contiguous frequency resources are contiguous RBs, the subcarriers available for transmission of the PRT within the contiguous RBs can be contiguous subcarriers of the contiguous RBs or can be non-contiguous subcarriers of the contiguous RBs. In some aspects, the indication of the number of contiguous frequency resources can be determined, transmitted, and / or received in accordance with or based on one or more time resources allocated for at least one of the uplink communication or the transmission of the one or more PRTs. For example, in some aspects, the indication of the number of contiguous frequency resources can be different for different time resources allocated for at least one of the uplink communication or the transmission of the one or more PRTs. As a particular example, a first indication of the number of contiguous frequency resources associated with a first time resource (such as a first symbol or a first slot) allocated for at least one of the uplink communication or the transmission of the one or more PRTs can be different than a second indication of the number of contiguous frequency resources associated with a second time resource (such as a second symbol or a second slot) allocated for at least one of the uplink communication or the transmission of the one or more PRTs.

[0074] According to some aspects, the indication of the subset of the one or more frequency resources allocated for both uplink communications and transmission of the one or more PRTs can include a bitmap indicating frequency resources allocated for transmission of the one or more PRTs. For example, the bitmap can identify which frequency resources are available for transmission of the PRTs and which frequency resources are unavailable for transmission of the PRTs. In some aspects, the bitmap indication can be in accordance with or based on (e.g., determined, transmitted, and / or received) one or more time resources allocated for at least one of uplink communications or transmission of the one or more PRTs. For example, in some aspects, the bitmap indication can be different for different time resources allocated for at least one of uplink communications or transmission of the one or more PRTs. As a particular example, a first bitmap indication for frequency resources associated with a first time resource (such as a first symbol or a first slot) allocated for at least one of uplink communications or transmission of the one or more PRTs can be different than a second bitmap indication for frequency resources associated with a second time resource (such as a second symbol or a second slot) allocated for at least one of uplink communications or transmission of the one or more PRTs.

[0075] In some aspects, the indication of the other one or more frequency resources can also be in accordance with or based on (e.g., determined, transmitted, and / or received) one or more time resources allocated for at least one of uplink communications or transmission of the one or more PRTs. For example, in some aspects, the indication of the other one or more frequency resources can be different for different time resources allocated for at least one of uplink communications or transmission of the one or more PRTs. As a particular example, a first indication of the other one or more frequency resources associated with a first time resource (such as a first symbol or a first slot) can be different than a second indication of the other one or more frequency resources associated with a second time resource (such as a second symbol or a second slot).

[0076] In some aspects, the frequency resources can be dynamically or statically allocated for transmission of the one or more PRTs. According to some aspects, when dynamically allocated, an indication of the frequency resources allocated for transmission of the one or more PRTs can be transmitted by the base station to the UE each time the base station transmits an uplink grant to the UE. For example, each time the base station transmits an uplink grant to the UE, the base station can transmit an indication in downlink control information (DCI) transmitted to the UE. As a particular example, within one DCI, the base station can transmit and the UE can receive an indication of the frequency resources, e.g., an indication of a subset and / or an indication of one or more other frequency resources, according to time resources, as described above, such that a first set of one or more frequency resources can be allocated for transmission of PRTs in a first time resource (such as a first symbol, half-slot, slot, etc.) and a second set of one or more frequency resources can be allocated for transmission of PRTs in a second time resource (such as a second symbol, half-slot, slot, etc.).

[0077] According to some aspects, when statically allocated, an indication of the frequency resources allocated for transmission of the one or more PRTs can not be transmitted by the base station to the UE each time the base station transmits an uplink grant to the UE. For example, the base station can transmit the indication using a radio resource control (RRC) signal.

[0078] In some aspects of the disclosure, the indication of the subset of one or more frequency resources and / or the indication of the other one or more frequency resources can be in accordance with or based at least in part on (e.g., determining, communicating, and / or receiving) at least one of a signal-to-interference-plus-noise ratio (SINR) or a modulation and coding scheme (MCS) associated with one or more frequency resources of the subset of one or more frequency resources. Similarly, the indication of the subset of one or more frequency resources and / or the indication of the other one or more frequency resources can be in accordance with at least one of a SINR or a MCS associated with the one or more frequency resources allocated for uplink communications. According to some aspects, the base station can measure a SINR associated with one or more frequency resources, e.g., the frequency resources allocated for uplink communications, or more specifically, the frequency resources of the subset of one or more frequency resources. In some aspects, the base station can compare each measured SINR to a threshold SINR. According to some aspects, the base station can select a frequency resource for allocation for transmission of the one or more PRTs in accordance with the SINR associated with the frequency resource being greater than or equal to the threshold SINR. For example, the subset of one or more frequency resources allocated for transmission of the one or more PRTs can correspond to the frequency resources of the subset of one or more frequency resources allocated for uplink communications that have an associated SINR greater than or equal to the threshold SINR. In some aspects, when additional frequency resources are needed for transmission of the PRTs, the additional frequency resources can be selected from the other one or more frequency resources (i.e., can not include the subset of one or more frequency resources allocated for uplink communications).

[0079] The selection of the frequency resources allocated for transmission of the one or more PRTs can also be in accordance with a MCS associated with one or more frequency resources, e.g., the frequency resources allocated for uplink communications, or more specifically, the frequency resources of the subset of one or more frequency resources. According to some aspects, the base station can determine a MCS associated with one or more frequency resources, e.g., the frequency resources allocated for uplink communications, or more specifically, the frequency resources of the subset of one or more frequency resources. In some aspects, the subset of one or more frequency resources allocated for transmission of the one or more PRTs can correspond to the frequency resources of the subset of one or more frequency resources allocated for uplink communications that are associated with a particular one or more target MCSs. In some aspects, when additional frequency resources are needed for transmission of the PRTs, the additional frequency resources can be selected from the other one or more frequency resources (i.e., can not include the subset of one or more frequency resources allocated for uplink communications).

[0080] In some aspects, the UE can also receive an indication of a maximum allowed ratio of a power spectral density (PSD) associated with the at least one PRT and a PSD associated with the uplink communication. In some aspects, the PSD associated with the at least PRT can refer to a PSD associated with transmission of the at least one PRT on the at least one frequency resource of the subset of one or more frequency resources, e.g., as shown in block 306 of FIG. 3. In additional aspects, the PSD associated with the at least PRT can refer to a PSD associated with transmission of the at least one PRT on the at least one frequency resource of the subset of one or more frequency resources and at least one frequency resource of the other one or more frequency resources (i.e., can not include the one or more frequency resources of the subset of one or more frequency resources allocated for the uplink communication). In some aspects, the PSD associated with the uplink communication can refer to a PSD associated with transmission of uplink information, such as control information and / or data information. Figure 3

[0081] According to some aspects, the UE can transmit the at least one PRT in accordance with the received maximum allowed ratio. For example, the UE can transmit the at least one PRT such that a ratio of the PSD associated with the at least one PRT and the PSD associated with the uplink communication does not exceed the indicated maximum allowed ratio.

[0082] As an example, Figure 4 another block diagram illustrating another method for resource allocation for PRTs according to some aspects of the disclosure is shown. Aspects of the method 400 can be implemented with various other aspects of the disclosure described with reference to Figures 1-2 and 6, such as a base station / gNB. For example, with reference to Figure 2 the controller / processor 240 of the base station 105 can control the base station 105 to perform the method 400.

[0083] Various example blocks of the method 400 will also be described with reference to the base station 105 as illustrated in Figure 6 . Figure 6 is a block diagram conceptually illustrating a design of a base station (e.g., gNB) configured according to some aspects of the disclosure. The base station 105 can include various structures, hardware, and components, such as those illustrated for the base station 105 of Figure 2 . For example, the base station 105 includes a controller / processor 240, which operates to execute logic or computer instructions stored in memory 242. The controller / processor 240 can further control the components of the base station 105 that provide the station’s features and functions. The base station 105, under the control of the controller / processor 240, transmits and receives signals via wireless radios 601a-t and antennas 234a-t. The wireless radios 601a-t include various components and hardware (as in​Figure 2 The base station 105 is configured to receive and process the reverse link messages from the UEs 115. The base station 105 can include the modulator / demodulators 232a-t, MIMO detector 236, receive processor 238, transmit processor 220, and TX MIMO processor 230, as described in connection with FIG. 2 (e.g., for the downlink). For the purposes of controlling the communication operations, the controller / processor 240 can be provided with digital signals obtained from the analog radio frequency signal reception.

[0084] Figure 4 A method 400 that can be performed by a wireless communication device, such as a gNB 105, is illustrated. The method 400 includes, at block 402, the base station transmitting an indication of one or more frequency resources allocated for uplink communications. The method 400 also includes, at block 404, the base station transmitting an indication of a subset of the one or more frequency resources allocated for uplink communications that is also allocated for transmission of one or more peak reduction tones. At block 406, the method 400 can include the base station receiving at least one peak reduction tone on at least one frequency resource of the subset of the one or more frequency resources.

[0085] In some aspects, techniques for allocating resources for PRTs can include a UE receiving and a base station transmitting an indication of one or more frequency resources allocated for uplink communications. Techniques for allocating resources for PRTs can also include a UE receiving and a base station transmitting an indication of a subset of the one or more frequency resources allocated for uplink communications that is also allocated for transmission of one or more PRTs. Techniques for allocating resources for PRTs can also include a UE transmitting and a base station receiving at least one PRT on at least one frequency resource of the subset of the one or more frequency resources.

[0086] Techniques for allocating resources for PRTs can include additional aspects, such as any single aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0087] In a first aspect, a UE can receive and a base station can transmit an indication of other one or more frequency resources allocated for transmission of one or more PRTs. In some aspects, the other one or more frequency resources can not include the one or more frequency resources allocated for uplink communications.

[0088] In a second aspect, alone or in combination with the first aspect, the UE can transmit and the base station can receive at least one other PRT on at least one frequency resource of the other one or more frequency resources.

[0089] In a third aspect, alone or in combination with one or more of the first and second aspects, the indication of the subset of the one or more frequency resources can be according to at least one of a SINR or a MCS associated with one or more of the subset of the one or more frequency resources.

[0090] In a fourth aspect, alone or in combination with one or more of the first through third aspects, the indication of the subset of the one or more frequency resources can include a frequency offset between a frequency resource of the subset of the one or more frequency resources and a frequency resource of the one or more frequency resources.

[0091] In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the indication of the subset of the one or more frequency resources can include a number of contiguous frequency resources included in the subset of the one or more frequency resources.

[0092] In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the indication of the subset of the one or more frequency resources can include a bitmap indicating frequency resources allocated for transmission of one or more PRTs.

[0093] In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, at least one of the frequency offset, the number of contiguous frequency resources, or the bitmap can be according to one or more time resources allocated for at least one of uplink communications or transmission of one or more PRTs.

[0094] In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the UE can receive and the base station can transmit an indication of a maximum allowed ratio of a power spectral density associated with the at least one PRT and a power spectral density associated with the uplink communications.

[0095] In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the UE can transmit the at least one PRT according to the received maximum allowed ratio and the base station can receive the at least one PRT according to the received maximum allowed ratio.

[0096] Those skilled in the art will understand that information and signals can be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that can be referenced throughout the above description can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0097] The components, functional blocks, and modules (e.g., of Figure 2 The components, functional blocks, and modules (e.g., of

[0098] Those skilled in the art will further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps (e.g., of Figure 3 and 4 The various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein can be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, microcontroller, or state machine. A processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0099] The various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein can be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, microcontroller, or state machine. A processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0100] The steps of a method or algorithm described in connection with the present disclosure can be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module can reside in Random Access Memory (RAM) memory, flash memory, Read Only Memory (ROM) memory, Erasable Programmable ROM (EPROM) memory, Electrically Erasable Programmable ROM (EEPROM) memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium can be integral to the processor. The processor and the storage medium can reside in an ASIC. The ASIC can reside in a user terminal. In the alternative, the processor and the storage medium can reside as discrete components in a user terminal.

[0101] In one or more exemplary designs, the functions described can be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions can be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. Computer-readable storage media can be any available media that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, functional computer-readable media alone or in combination with

[0102] As used herein, including in the claims, the term “and / or,” when used in a list of two or more items, means that any one of the listed items can be employed by itself, or any combination of two or more of the listed items can be employed. For example, if a composition is described as containing components A, B, and / or C, the composition can contain A alone; B alone; C alone; A and B in combination; A and C in combination; B and C in combination; or A, B, and C in combination. Also, as used herein, including in the claims, “or” as used in a list of items prefaced by “at least one of’ indicates a disjunctive list such that, for example, a list of “at least one of A, B, or C” means A or B or C or any combination of these.

[0103] The previous description of the disclosure is provided to enable any persons skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wireless communication method at a user equipment (UE), comprising: receiving an indication of one or more frequency resources allocated for uplink communication; receiving an indication of a subset of the one or more frequency resources allocated for uplink communication, the subset of the one or more frequency resources being further allocated for transmission of one or more peak reduction tones, wherein the indication of the subset of the one or more frequency resources is based on at least one of a signal to interference plus noise ratio (SINR) or a modulation and coding scheme (MCS) associated with at least one frequency resource in the subset of the one or more frequency resources; as well as At least one peak reducing tone is transmitted on at least one frequency resource in said subset of said one or more frequency resources.

2. The method of claim 1, further comprising: receiving an indication of other one or more frequency resources allocated for transmission of one or more peak reducing tones, wherein the other one or more frequency resources do not include the one or more frequency resources; as well as At least one other peak reducing tone is transmitted on at least one frequency resource of the other one or more frequency resources.

3. The method of claim 1 , wherein the indication of the subset of the one or more frequency resources comprises at least one of: a frequency offset between a frequency resource in the subset of the one or more frequency resources and a frequency resource in the one or more frequency resources; the number of contiguous frequency resources included in the subset of the one or more frequency resources; or A bitmap indicating frequency resources allocated for transmission of one or more peak reducing tones.

4. A method as claimed in claim 3, wherein at least one of the frequency offset, the number of contiguous frequency resources, or the bit map is based on one or more time resources allocated for at least one of uplink communication or transmission of one or more peak-reduced frequency modulations.

5. The method of claim 1, further comprising: receiving an indication of a maximum allowed ratio of a power spectral density associated with the at least one peak reducing tone and a power spectral density associated with the uplink communication; and The at least one peak reduction tone is transmitted according to the received maximum allowed ratio.

6. A method as claimed in claim 1, wherein the indication of the subset of the one or more frequency resources includes a frequency offset between the frequency resources in the subset of the one or more frequency resources and the frequency resources in the one or more frequency resources, and wherein the frequency offset is based on one or more time resources allocated for at least one of uplink communication or one or more peak reduction frequency modulation transmissions.

7. A method as claimed in claim 1, wherein the indication of the subset of the one or more frequency resources includes a number of contiguous frequency resources included in the subset of the one or more frequency resources, and wherein the number of contiguous frequency resources is based on one or more time resources allocated for at least one of uplink communication or transmission of one or more peak-reduced frequency modulations.

8. An apparatus configured for wireless communication, the apparatus comprising: at least one processor; as well as a memory coupled to the at least one processor, wherein the at least one processor is configured to: receiving an indication of one or more frequency resources allocated for uplink communication; receiving an indication of a subset of the one or more frequency resources allocated for uplink communication, the subset of the one or more frequency resources being further allocated for transmission of one or more peak reduction tones, wherein the indication of the subset of the one or more frequency resources is based on at least one of a signal to interference plus noise ratio (SINR) or a modulation and coding scheme (MCS) associated with at least one frequency resource in the subset of the one or more frequency resources; as well as At least one peak reducing tone is transmitted on at least one frequency resource in said subset of said one or more frequency resources.

9. The apparatus of claim 8, wherein the at least one processor is further configured to: receiving an indication of other one or more frequency resources allocated for transmission of one or more peak reducing tones, wherein the other one or more frequency resources do not include the one or more frequency resources; and At least one other peak reducing tone is transmitted on at least one frequency resource of the other one or more frequency resources.

10. The apparatus of claim 8, wherein the indication of the subset of the one or more frequency resources comprises at least one of: a frequency offset between a frequency resource in the subset of the one or more frequency resources and a frequency resource in the one or more frequency resources; the number of contiguous frequency resources included in the subset of the one or more frequency resources; or A bitmap indicating frequency resources allocated for transmission of one or more peak reducing tones.

11. An apparatus as claimed in claim 10, wherein at least one of the frequency offset, the number of contiguous frequency resources, or the bit map is based on one or more time resources allocated for at least one of uplink communication or transmission of one or more peak-reduced frequency modulations.

12. The apparatus of claim 8, wherein the at least one processor is further configured to: receiving an indication of a maximum allowed ratio of a power spectral density associated with the at least one peak reducing tone and a power spectral density associated with the uplink communication; and The at least one peak reduction tone is transmitted according to the received maximum allowed ratio.

13. An apparatus as claimed in claim 8, wherein the indication of the subset of the one or more frequency resources includes a frequency offset between the frequency resources in the subset of the one or more frequency resources and the frequency resources in the one or more frequency resources, and wherein the frequency offset is based on one or more time resources allocated for at least one of uplink communication or transmission of one or more peak reduction frequency modulations.

14. An apparatus as claimed in claim 8, wherein the indication of the subset of the one or more frequency resources includes a number of contiguous frequency resources included in the subset of the one or more frequency resources, and wherein the number of contiguous frequency resources is based on one or more time resources allocated for at least one of uplink communication or transmission of one or more peak-reduction frequency modulations.

15. A wireless communication method at a network node, comprising: transmitting an indication of one or more frequency resources allocated for uplink communication; transmitting an indication of a subset of the one or more frequency resources allocated for uplink communication, the subset of the one or more frequency resources being further allocated for transmission of one or more peak reduction tones, wherein the indication of the subset of the one or more frequency resources is based on at least one of a signal to interference plus noise ratio (SINR) or a modulation and coding scheme (MCS) associated with at least one frequency resource in the subset of the one or more frequency resources; as well as At least one peak reducing tone is received on at least one frequency resource in the subset of the one or more frequency resources.

16. The wireless communication method according to claim 15, further comprising: transmitting an indication of other one or more frequency resources allocated for transmission of one or more peak reducing tones, wherein the other one or more frequency resources do not include the one or more frequency resources; as well as At least one other peak reducing frequency tone is received on at least one frequency resource of the other one or more frequency resources.

17. The wireless communication method of claim 15, wherein the indication of the subset of the one or more frequency resources comprises at least one of: a frequency offset between a frequency resource in the subset of the one or more frequency resources and a frequency resource in the one or more frequency resources; the number of contiguous frequency resources included in the subset of the one or more frequency resources; or A bitmap indicating frequency resources allocated for transmission of one or more peak reducing tones.

18. A wireless communication method as described in claim 17, wherein at least one of the frequency offset, the number of contiguous frequency resources, or the bit map is determined based on one or more time resources allocated for at least one of uplink communication or transmission of one or more peak reduction frequency modulations.

19. The wireless communication method according to claim 15, further comprising: transmitting an indication of a maximum allowed ratio of a power spectral density associated with the at least one peak reducing tone and a power spectral density associated with the uplink communication; and The at least one peak reduction tone is received according to the communicated maximum allowed ratio.

20. The wireless communication method of claim 15, wherein the indication of the subset of the one or more frequency resources comprises a frequency offset between frequency resources in the subset of the one or more frequency resources and frequency resources in the one or more frequency resources.

21. An apparatus configured for wireless communication, the apparatus comprising: at least one processor; as well as a memory coupled to the at least one processor, wherein the at least one processor is configured to: transmitting an indication of one or more frequency resources allocated for uplink communication; transmitting an indication of a subset of the one or more frequency resources allocated for uplink communication, the subset of the one or more frequency resources being further allocated for transmission of one or more peak reduction tones, wherein the indication of the subset of the one or more frequency resources is based on at least one of a signal to interference plus noise ratio (SINR) or a modulation and coding scheme (MCS) associated with at least one frequency resource in the subset of the one or more frequency resources; as well as At least one peak reducing tone is received on at least one frequency resource in the subset of the one or more frequency resources.

22. The apparatus of claim 21 , wherein the at least one processor is further configured to: transmitting an indication of other one or more frequency resources allocated for transmission of one or more peak reducing tones, wherein the other one or more frequency resources do not include the one or more frequency resources; and At least one other peak reducing frequency tone is received on at least one frequency resource of the other one or more frequency resources.

23. The apparatus of claim 21 , wherein the indication of the subset of the one or more frequency resources comprises at least one of: a frequency offset between a frequency resource in the subset of the one or more frequency resources and a frequency resource in the one or more frequency resources; the number of contiguous frequency resources included in the subset of the one or more frequency resources; or A bitmap indicating frequency resources allocated for transmission of one or more peak reducing tones.

24. An apparatus as claimed in claim 23, wherein at least one of the frequency offset, the number of contiguous frequency resources, or the bit map is determined based on one or more time resources allocated for at least one of uplink communication or transmission of one or more peak reduction frequency modulations.

25. The apparatus of claim 21 , wherein the at least one processor is further configured to: transmitting an indication of a maximum allowed ratio of a power spectral density associated with the at least one peak reducing tone and a power spectral density associated with the uplink communication; and The at least one peak reduction tone is received according to the communicated maximum allowed ratio.

26. The apparatus of claim 21, wherein the indication of the subset of the one or more frequency resources comprises a bitmap indicating frequency resources allocated for transmission of one or more peak-reducing tones.

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