Peak Reduction Tone Distribution

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user device can switch from a first bandwidth portion to a second bandwidth portion; and transmit a signal including one or more peak reducing tones (PRTs) in one or more locations defined by the PRT allocation of the second bandwidth portion. Numerous other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 62 / 706,101, filed on July 31, 2020, entitled “PEAK REDUCTION TONE ALLOCATION,” and to U.S. Non-Provisional Patent Application No. 17 / 443,908, filed on July 28, 2021, entitled “PEAK REDUCTION TONE ALLOCATION,” which are hereby expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications, and to techniques and apparatus for peak reducing tone (PRT) allocation. Background Art

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

[0005] A wireless network may include several base stations (BSs), which can support communication for several user equipment (UEs). A UE can communicate with a BS via downlinks and uplinks. A "downlink" (or "forward link") refers to the communication link from the BS to the UE, and an "uplink" (or "reverse link") refers to the communication link from the UE to the BS. As described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0006] The aforementioned multiple access technologies have been adopted in various communications standards to provide a common protocol that enables different user devices to communicate at municipal, national, regional, and even global levels. NR, also known as 5G, is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, reducing costs, improving services, utilizing new spectrum, and using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL), CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), as well as supporting beamforming, multiple-input, multiple-output (MIMO) antenna technology, and carrier aggregation, and better integration with other open standards. As the demand for mobile broadband access continues to increase, further improvements to LTE, NR, and other radio access technologies remain valuable. Summary of the Invention

[0007] Some aspects described herein relate to a method of wireless communication performed by an apparatus of a user equipment (UE). The method may include switching from a first bandwidth portion to a second bandwidth portion. The method may include transmitting a signal including one or more peak reducing tones (PRTs) in one or more locations defined by a PRT allocation of the second bandwidth portion.

[0008] Some aspects described herein relate to a wireless communication method performed by a base station. The method may include causing a UE to switch from a first bandwidth portion to a second bandwidth portion associated with a PRT allocation. The method may include receiving a signal from the UE including one or more PRTs, the one or more PRTs being in one or more locations defined by the PRT allocation.

[0009] Some aspects described herein relate to a UE for wireless communication. The UE may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to switch from a first bandwidth portion to a second bandwidth portion. The one or more processors may be configured to transmit a signal including one or more PRTs in one or more locations defined by a PRT allocation in the second bandwidth portion.

[0010] Some aspects described herein relate to a base station for wireless communication. The base station may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to cause a UE to switch from a first bandwidth portion to a second bandwidth portion associated with a PRT allocation. The one or more processors may be configured to receive a signal from the UE including one or more PRTs in one or more locations defined by the PRT allocation.

[0011] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a UE. The set of instructions, when executed by one or more processors of the UE, may cause the UE to switch from a first bandwidth portion to a second bandwidth portion. The set of instructions, when executed by the one or more processors of the UE, may cause the UE to transmit a signal including one or more PRTs in one or more locations defined by a PRT allocation in the second bandwidth portion.

[0012] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a base station. The set of instructions, when executed by one or more processors of the base station, may cause the base station to switch a UE from a first bandwidth portion to a second bandwidth portion associated with a PRT allocation. The set of instructions, when executed by one or more processors of the base station, may cause the base station to receive a signal from the UE including one or more PRTs in one or more locations defined by the PRT allocation.

[0013] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for switching from a first bandwidth portion to a second bandwidth portion. The apparatus may include means for transmitting a signal of one or more PRTs included in one or more locations defined by a PRT allocation in the second bandwidth portion.

[0014] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for causing a UE to switch from a first bandwidth portion to a second bandwidth portion associated with a PRT allocation. The apparatus may include means for receiving, from the UE, one or more PRTs included in one or more locations defined by the PRT allocation.

[0015] In some aspects, a method of wireless communication performed by a UE includes: switching from a first bandwidth portion to a second bandwidth portion; determining a PRT allocation for the second bandwidth portion; and sending a signal including one or more PRTs, the one or more PRTs being based at least in part on the PRT allocation.

[0016] In some aspects, a method of wireless communication performed by a base station includes: causing a UE to switch from a first bandwidth portion to a second bandwidth portion; determining a PRT allocation for the second bandwidth portion; and receiving a signal from the UE including one or more PRTs, the one or more PRTs being based at least in part on the PRT allocation.

[0017] In some aspects, a UE for wireless communication includes a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to: switch from a first bandwidth portion to a second bandwidth portion; determine a PRT allocation for the second bandwidth portion; and send a signal including one or more PRTs, the one or more PRTs being based at least in part on the PRT allocation.

[0018] In some aspects, a base station for wireless communication includes a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to: cause a UE to switch from a first bandwidth portion to a second bandwidth portion; determine a PRT allocation for the second bandwidth portion; and receive a signal from the UE including one or more PRTs, the one or more PRTs being based at least in part on the PRT allocation.

[0019] In some aspects, a non-transitory computer-readable medium storing one or more instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the one or more processors to: switch from a first bandwidth portion to a second bandwidth portion; determine a PRT allocation for the second bandwidth portion; and transmit a signal including one or more PRTs, the one or more PRTs being based at least in part on the PRT allocation.

[0020] In some aspects, a non-transitory computer-readable medium storing one or more instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a base station, cause the one or more processors to: cause a UE to switch from a first bandwidth portion to a second bandwidth portion; determine a PRT allocation for the second bandwidth portion; and receive a signal from the UE including one or more PRTs, the one or more PRTs being based at least in part on the PRT allocation.

[0021] In some aspects, an apparatus for wireless communication includes: means for switching from a first bandwidth portion to a second bandwidth portion; means for determining a PRT allocation for the second bandwidth portion; and means for sending a signal including one or more PRTs based at least in part on the PRT allocation.

[0022] In some aspects, an apparatus for wireless communication includes: means for causing a UE to switch from a first bandwidth portion to a second bandwidth portion; means for determining a PRT allocation for the second bandwidth portion; and means for receiving a signal from the UE including one or more PRTs based at least in part on the PRT allocation.

[0023] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as generally described herein with reference to and through the accompanying figures and description.

[0024] The features and technical advantages of the examples according to the present disclosure have been summarized quite broadly above so that the following detailed description may be better understood. Additional features and advantages will be described below. The concepts and specific examples disclosed may be readily used as a basis for modifying or designing other structures for achieving the same purposes of the present disclosure. Such equivalent structures do not depart from the scope of the appended claims. The features of the concepts disclosed herein, their organization and method of operation, and associated advantages will be better understood from the following description when considered in conjunction with the accompanying drawings. Each figure is provided for the purpose of illustration and description and is not intended to be construed as a limitation of the claims.

[0025] Although the various aspects of the present disclosure are illustrated by illustrating some examples, it will be understood by those skilled in the art that these aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip embodiments or other devices based on non-module components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing equipment, medical devices, or devices supporting artificial intelligence). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, or system-level components. The devices in combination with the described aspects and features may include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals may include multiple components for analog and digital purposes (e.g., hardware components including antennas, radio frequency chains, power amplifiers, modulators, buffers, processors, interleavers, adders, or summers). It is expected that the various aspects described herein can be practiced in devices, components, systems, distributed arrangements, or end-user devices of various sizes, shapes, and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to enable a detailed understanding of the above-described features of the present disclosure, a more detailed description briefly summarized above may be obtained by reference to certain aspects, some of which are illustrated in the accompanying drawings. It should be noted, however, that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered limiting of its scope, as the description may admit to other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0027] Figure 1 is a schematic diagram illustrating an example of a wireless network according to the present disclosure.

[0028] Figure 2 is a diagram illustrating an example of a base station communicating with a UE in a wireless network according to the present disclosure.

[0029] Figure 3-5 is a diagram illustrating an example of determining PRT allocation of a target bandwidth part (BWP) according to the present disclosure.

[0030] Figure 6-7 is a schematic diagram illustrating an example process associated with PRT allocation according to the present disclosure. DETAILED DESCRIPTION

[0031] Various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout the present disclosure. Rather, these aspects are provided to make the present disclosure in-depth and complete and to fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art should understand that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether implemented independently of any other aspect of the present disclosure or implemented in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to implement an apparatus or practice method. In addition, the scope of the present disclosure is intended to cover such an apparatus or method, wherein other structures and functions or structures, functions other than or different from the various aspects of the present disclosure set forth herein are used to practice. It should be understood that any aspect of the disclosure disclosed herein can be implemented by one or more elements of the claims.

[0032] Several aspects of the communication system will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, and / or the like (collectively, "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0033] It should be noted that while various aspects may be described herein using terminology generally associated with 5G or NR radio access technologies (RATs), various aspects of the present disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and / or RATs beyond 5G (e.g., 6G).

[0034] Figure 1 is a schematic diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be or may include an element of a 5G (NR) network and / or an example of an LTE network. The wireless network 100 may include several base stations 110 (shown as BS110a, BS110b, BS110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NRBS, NodeB, gNB, 5G node B (NB), access point, transmit receive point (TRP), etc. Each BS can provide communication coverage for a specific geographic area. In 3GPP, the term "cell" can refer to the coverage area of ​​a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0035] A BS may provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. A macro cell may cover a relatively large geographic area (e.g., a few kilometers in radius) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown, BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB," "base station," "NR BS," "gNB," "TRP," "AP," "Node B," "5G NB," and "cell" may be used interchangeably herein.

[0036] In some aspects, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces, such as direct physical connections or virtual networks, using any suitable transport network.

[0037] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and send data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown, a relay station 110d may communicate with a macro BS 110a and a UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay BS may also be referred to as a relay station, a relay base station, a relay, or the like.

[0038] The wireless network 100 may be a heterogeneous network including different types of BSs, such as macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a low transmit power level (e.g., 0.1 to 2 watts).

[0039] The network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly via a wireless or wired backhaul.

[0040] UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be stationary or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. A UE may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a notebook computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet)), an entertainment device (e.g., a music or video device or satellite radio), a vehicle assembly or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0041] Some UEs may be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags that can communicate with a base station, another device (e.g., a remote device), or some other entity. For example, a wireless node may provide connectivity to or with a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs may be considered customer premises equipment (CPE). UE 120 may be included in a housing that houses components of UE 120 (such as a processor component and / or a memory component). In some aspects, the processor component and the memory component may be coupled together. For example, the processor component (e.g., one or more processors) and the memory component (e.g., memory) may be operatively coupled, communicatively coupled, electrically coupled, and / or electrically coupled.

[0042] In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific RAT and operate on one or more frequencies. RATs can also be referred to as radio technologies, air interfaces, etc. Frequencies can also be referred to as carriers, frequency channels, etc. To avoid interference between wireless networks of different RATs, each frequency can support a single RAT in a given geographic area. In some cases, NR or 5G RAT networks can be deployed.

[0043] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary to communicate with each other). For example, UE 120 can use peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols or vehicle-to-infrastructure (V2I) protocols), and / or mesh networks. In this case, UE 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0044] Devices of the wireless network 100 may communicate using an electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc. based on frequency or wavelength. For example, devices of the wireless network 100 may communicate using an operating frequency band having a first frequency range (FR1) that may span from 410 MHz to 7.125 GHz and / or may communicate using an operating frequency band having a second frequency range (FR2) that may span from 24.25 GHz to 52.6 GHz. Frequencies between FR1 and FR2 are sometimes referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as a “sub-6 GHz” band. Similarly, FR2 is often referred to as a “millimeter wave” band, although it is distinct from the extremely high frequency (EHF) band (30 GHz–300 GHz) designated as a “millimeter wave” band by the International Telecommunication Union (ITU). Thus, unless otherwise specifically stated, it should be understood that the terms "sub-6 GHz," etc., if used herein, can broadly refer to frequencies less than 6 GHz, frequencies within FR1, and / or mid-band frequencies (e.g., greater than 7.125 GHz). Similarly, unless otherwise specifically stated, it should be understood that the terms "millimeter wave," etc., if used herein, can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or mid-band frequencies (e.g., less than 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 can be modified, and that the techniques described herein are applicable to those modified frequency ranges.

[0045] As mentioned above, provide Figure 1 As an example. Other examples may be related to Figure 1 Different than described.

[0046] Figure 2 is a diagram illustrating an example 200 of a base station 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The base station 110 and the UE 120 may be Figure 1Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T≧1 and R≧1.

[0047] At the base station 110, a transmit processor 220 may receive data for one or more UEs from a data source 212, select one or more modulation and coding schemes (MCSs) for each UE based at least in part on a channel quality indication (CQI) received from the UE, process (e.g., decode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling) and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). A transmit (TX) multiple-input, multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols (if applicable), and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and frequency upconvert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.

[0048] At UE 120, antennas 252a through 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may also process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indication (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a channel quality indication (CQI) parameter, among other examples. In some aspects, one or more components of the UE 120 may be included in the housing 284.

[0049] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via the communication unit 294.

[0050] The antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or may be included within one or more antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays, among other examples. An antenna panel, antenna group, set of antenna elements, and / or antenna array may include one or more antenna elements. An antenna panel, antenna group, set of antenna elements, and / or antenna array may include a set of coplanar antenna elements and / or a set of non-coplanar antenna elements. An antenna panel, antenna group, set of antenna elements, and / or antenna array may include antenna elements within a single housing and / or antenna elements within multiple housings. An antenna panel, antenna group, set of antenna elements, and / or antenna array may include one or more antenna elements coupled to one or more transmit and / or receive components, such as Figure 2 One or more components.

[0051] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from the controller / processor 280. The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266 (if applicable), further processed by the modulators 254a through 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of the UE 120 may be included in a modem of the UE 120. In some cases, the UE 120 includes a transceiver. The transceiver may include any combination of antennas 252, modulators and / or demodulators 254, MIMO detectors 256, receive processors 258, transmit processors 264, and / or TX MIMO processors 266, and may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., as described with reference to FIG. Figure 3-7 described above).

[0052] At base station 110, uplink signals from UE 120 and other UEs may be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information sent by UE 120. Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to controller / processor 240. Base station 110 may include a communication unit 244 and communicate with network controller 130 via communication unit 244. Base station 110 may include a scheduler 246 to schedule UE 120 for downlink and / or uplink communications. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of base station 110 may be included in a modem of base station 110. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antennas 234, modulators and / or demodulators 232, MIMO detectors 236, receive processors 238, transmit processors 220, and / or TX MIMO processors 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., as described with reference to FIG. Figure 3-7 described above).

[0053] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other components of the controller 240 of the base station 110, the controller 280 of the UE 120, and / or the like may perform one or more techniques associated with peak reduction tone allocation, as described in more detail elsewhere herein. Figure 2 Any other component of the can execute or guide e.g. Figure 6 The process of 600 Figure 7 700 and / or other processes described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communications. For example, the one or more instructions, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly or after compilation, conversion, and / or translation), may cause the one or more processors, UE 120, and / or base station 110 to perform or direct, for example, Figure 6 The process of 600 Figure 7 In some aspects, executing instructions may include running instructions, converting instructions, compiling instructions, and / or translating instructions, among other examples.

[0054] In some aspects, the UE 120 may include means for switching from a first bandwidth portion to a second bandwidth portion, means for determining a peak reducing tone (PRT) allocation for the second bandwidth portion, means for transmitting a signal including one or more PRTs based at least in part on the PRT allocation, etc. In some aspects, such means may include in conjunction with Figure 2 One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and the like.

[0055] In some aspects, base station 110 may include means for causing a UE to switch from a first bandwidth portion to a second bandwidth portion, means for determining a PRT allocation for the second bandwidth portion, means for receiving a signal including one or more PRTs from the UE based at least in part on the PRT allocation, etc. In some aspects, such means may include combining Figure 2One or more components of base station 110 are depicted, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and the like.

[0056] Although Figure 2 The blocks in FIG. 2 are illustrated as distinct components, but the functionality described above with respect to the blocks may be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0057] As mentioned above, provide Figure 2 As an example. Other examples may be related to Figure 2 Description is different.

[0058] The radio frequency front end (RFFE) of a UE may include a power amplifier (PA). The PA may be associated with a maximum input power (sometimes referred to as a saturation point), and the PA may exhibit nonlinear behavior as the maximum input power is approached. For example, nonlinearity may result in increased in-band and out-of-band distortion of the amplified signal, as well as performance degradation at the receiver (e.g., as quantified by an error vector magnitude (EVM) value). To reduce or avoid the adverse effects of the PA's nonlinearity, the UE may operate the PA at an average input power below the saturation point. For example, for a signal with a peak-to-average power ratio (PAPR) of X decibels (dB), the PA may be operated with an input back-off (IBO) of X dB so that the PA's saturation point is not reached even at the peak of the signal.

[0059] Some transmissions use orthogonal frequency division multiplexing (OFDM) waveforms. OFDM signals are known to experience significant PAPR, which increases proportionally with the size of the coding block. This PAPR problem is exacerbated in 5G / NR because 5G / NR is associated with higher data rates and therefore has larger block sizes than other RATs (such as 4G / LTE). Compared to some other RATs, 4G / LTE and 5G / NR provide increased bandwidth in both the uplink and downlink. Using a technique known as tone reservation, this increased bandwidth can be used to reduce the PAPR of OFDM signals. Tone reservation allows a transmitter to utilize one or more otherwise idle tones to reduce the PAPR. For example, the transmitter can determine the amplitude and phase of a peak reduction tone (PRT) mapped to a reserved tone based at least in part on the OFDM symbol associated with the tone in order to reduce (e.g., minimize) the PAPR. Assuming that the reserved tone and the data tone do not overlap, tone reservation may not increase the waveform's EVM or adjacent channel leakage ratio (ACLR).

[0060] A PRT is a frequency tone specifically designed to reduce the PAPR of a waveform (as opposed to the frequency tone specifically used to transmit data). A receiver typically discards the PRT before decoding. A transmitter can design a PAPR-reducing waveform, but support for PAPR-reducing waveforms in the frequency domain is limited to these PRTs. The transmitter can add this PAPR-reducing waveform to the data-carrying waveform to reduce the PAPR, which reduces PA nonlinearity.

[0061] While the amplitude and phase of the reserved tone can be adjusted for each OFDM symbol, a basic index assignment can be used across multiple different signals. However, determining the index assignment uses significant computational resources. Therefore, fixing the position of the PRT before transmission can significantly reduce transmitter complexity because no real-time optimization is required.

[0062] In some aspects, a UE's bandwidth part (BWP) may be switched while the UE is active. For example, a base station may provide downlink control information (DCI) indicating a switch from a source BWP to a target BWP. The BWP is the UE's active communication bandwidth. In some cases, the UE may switch from a wider BWP to a narrower BWP within the wider BWP, or from a narrower BWP to a wider BWP. In other cases, the UE may switch to a BWP that does not overlap with the UE's original BWP. If the PRT position of the waveform is configured, for example, via semi-static signaling (e.g., radio resource control (RRC) signaling, medium access control (MAC) signaling, etc.), the PRT position configured for the UE may fall outside the bandwidth of the target BWP. In this case, the effectiveness of the PRT may be reduced, for example, due to fewer PRTs falling within the target BWP or due to suboptimal distribution of the PRTs within the target BWP.

[0063] Some techniques and apparatus described herein provide for determining a set of PRT positions (referred to as a PRT allocation) for a target BWP associated with a handover to a target BWP. In some aspects, a base station may send a DCI to a UE based at least in part on triggering a BWP handover for the UE. In some aspects, the base station may configure a PRT sequence for a frequency band (e.g., the UE's operating bandwidth, the bandwidth of a cell provided by the base station, etc.), and the UE may determine a PRT allocation that includes PRT positions identified by the PRT sequence and falling within the UE's bandwidth. In some aspects, the base station may configure a PRT sequence for the UE, and the UE may shift the PRT sequence based at least in part on the frequency position of the target BWP such that the PRT positions of the PRT sequence are at least partially within the target BWP. In this manner, the UE may determine the PRT allocation for the target BWP, thereby enabling dynamic BWP switching without negatively impacting the PAPR of signals transmitted or received by the UE. Consequently, the UE may operate with a lower IBO, thereby increasing coverage and transmission performance of the UE.

[0064] Figure 3 3 is a diagram illustrating an example 300 of determining PRT allocation to a target BWP according to the present disclosure. As shown, the example 300 includes a UE 120 and a BS 110. In the example 300, the configuration of PRT allocation to the target BWP is manipulated via dynamic signaling (such as DCI).

[0065] like Figure 3As shown by reference numeral 310, BS 110 may transmit configuration information to UE 120. The configuration information may include information indicating a BWP set for UE 120, information indicating a PRT allocation associated with a source BWP, and the like. As further shown, UE 120 and BS 110 may communicate over the source BWP. For example, the configuration information may initially activate the source BWP, or BS 110 may transmit an indication to activate the source BWP. As shown by reference numeral 320, the source BWP may include a PRT set. The location of the PRT set may be referred to as a PRT allocation, and the location of the PRT set may be defined by a PRT sequence specified by BS 110.

[0066] As shown at reference numeral 330, BS 110 may provide an indication to switch from a source BWP to a target BWP. For example, BS 110 may trigger or cause UE 120 to switch from the source BWP to the target BWP. In some aspects, this indication may include a DCI. For example, the DCI may include a value indicating a BWP from a set of BWPs configured by BS 110 to be used as the active BWP for UE 120. In some aspects, the source BWP may at least partially overlap with the target BWP, as shown at reference numeral 340. For example, the target BWP may have a bandwidth that is a subset of the bandwidth of the source BWP. In other aspects, the source BWP and target BWP may partially overlap or may not overlap. If UE 120 were to allocate the PRT of the source BWP to the target BWP (e.g., based at least in part on a semi-static configuration of the PRT sequence), the PRT position of the target BWP would fall outside the bandwidth of the target BWP, thereby degrading the PAPR of UE 120's transmissions. Furthermore, semi-statically updating the PRT sequence of the UE 120 for each BWP switch may be resource intensive and may introduce significant delay.

[0067] As further shown, BS 110 may provide information indicating the PRT allocation for the target BWP to UE 120. The PRT allocation for the target BWP is indicated by reference numeral 350. In some aspects, the information indicating the PRT allocation for the target BWP may include a DCI. In some aspects, the DCI may be the same DCI that activates the target BWP. For example, the DCI may indicate the target BWP and may indicate the PRT allocation for the target BWP. In some aspects, the DCI indicating the PRT allocation may be different from the DCI that activates the target BWP. For example, BS 110 may provide a first DCI that activates the target BWP and a second DCI that indicates the PRT allocation for the target BWP. In this case, BS 110 may provide the second DCI based at least in part on providing the first DCI. For example, whenever the BWP of UE 120 changes, BS 110 may indicate the updated PRT sequence via DCI. In this way, BS 110 indicates an updated PRT sequence (e.g., PRT allocation) of a target BWP associated with BWP switching of UE 120 via dynamic signaling (e.g., DCI), which improves PAPR on the target BWP and reduces latency and overhead associated with configuration of PRT allocation.

[0068] As shown in reference numeral 360, UE 120 may send a transmission including a set of PRT symbols on a target BWP. For example, UE 120 may determine the position of the set of PRT symbols based at least in part on the PRT allocation. In some aspects, UE 120 may apply an algorithm to determine the value of the set of PRT symbols. One algorithm for determining the PRT value of a waveform is a signal-to-clip noise ratio-tone reservation (SCR-TR) algorithm. The SCR-TR algorithm may receive the position of a set of reserved tones (as input) and may output optimized values ​​(e.g., phase and amplitude) of the set of reserved tones so as to minimize the PAPR of the resulting OFDM waveform. As an example of the SCR-TR algorithm, assume that UE 120 is granted tones {1, ..., N} for transmission. Let Φ be a subset of {1, ..., N} that corresponds to the PRT positions identified by the PRT allocation or PRT sequence (e.g., Φ is the set of reserved tones for the PRT). Therefore, the data tones will be allocated to the remaining tones {1, ..., N}\Φ. UE 120 can construct a frequency domain kernel UE 120 may determine the inverse fast Fourier transform (IFFT) of the frequency domain kernel: p = IFFT(P). If X represents frequency domain data, then X i= 0, if i∈Φ. UE 120 may determine the IFFT of the frequency domain data: x=IFFT(X). UE 120 may find the location of the maximum peak of x. Let j∈[N] be the index of the maximum peak of x. UE 120 may cyclically shift by p to align the peaks: p j = cyclic shift (p, j). UE 120 may subtract the scaled and shifted p from x to obtain where μ is the target peak, <x(j) is the phase of x(j), and UE 120 may iterate the above algorithm one or more times to reduce several peaks.Thus, UE 120 may apply the SCR-TR algorithm to reduce the PAPR of an OFDM waveform including a reserved tone, such as the OFDM waveform used for transmission as shown by reference numeral 360.

[0069] As mentioned above, provide Figure 3 As an example. Other examples may be related to Figure 3 Different than described.

[0070] Figure 4 1 is a diagram illustrating an example 400 of determining PRT allocation for a target BWP according to the present disclosure. As shown, example 400 includes UE 120 and BS 110. In example 400, BS 110 configures a bandwidth PRT sequence, and UE 120 determines PRT allocation based at least in part on the bandwidth PRT sequence.

[0071] like Figure 4 As shown by reference numeral 410, BS 110 may send configuration information to UE 120. In some aspects, the configuration information may configure a BWP set, such as in conjunction with Figure 3 310 is described in more detail. As shown in the figure, the configuration information may indicate a bandwidth PRT sequence. Reference numeral 420 shows an example of a bandwidth PRT sequence. A "bandwidth PRT sequence" may refer to a PRT sequence that spans the operating bandwidth of UE 120, a PRT sequence that spans the operating bandwidth of BS 110, a PRT sequence that spans a frequency band (e.g., an LTE band, an NR band, etc.), and the like. In some aspects, a bandwidth PRT sequence may span a bandwidth that is smaller than the operating bandwidth of UE 120 or BS 110. For example, a PRT sequence may span a bandwidth in a frequency band that is a true subset of the frequency band. In some aspects, a plurality of different PRT sequences may be configured in different areas of the frequency band. Configuration information indicating the bandwidth PRT sequence may be provided via RRC signaling, MAC signaling, and the like.

[0072] As shown, UE 120 can communicate with BS 110 over a source BWP. For example, UE 120 can use a PRT allocation determined at least in part based on a bandwidth PRT sequence to transmit a set of PRTs in communications with BS 110. Reference numeral 430 illustrates the PRT allocation for the source BWP. Generally, the PRT allocation for a given BWP is represented by a thicker line than the line used for the bandwidth PRT sequence. UE 120 and BS 110 can determine the PRT allocation based at least in part on the PRT positions indicated by the bandwidth PRT sequence that intersect the bandwidth of the source BWP. For example, UE 120 and BS 110 can use PRTs that fall within the allocated BWP. Generally, references herein to a PRT identified by a PRT sequence may refer to a PRT index identified by the PRT sequence. For example, a PRT sequence may identify a set of PRT indices and the PRT positions associated with the PRTs in the PRT index set. In some aspects, the PRT index may be referred to as a PRT opportunity.

[0073] As shown by reference numeral 440, BS 110 may provide an indication to switch from a source BWP to a target BWP. For example, BS 110 may trigger or cause UE 120 to switch from a source BWP to a target BWP. In some aspects, the indication may include a DCI. For example, the DCI may include a value indicating a BWP from a set of BWPs configured by BS 110 to be used as the active BWP for UE 120. In some aspects, the source BWP may at least partially overlap with the target BWP, such as Figure 4 As shown. In other aspects, the source BWP and the target BWP may not overlap. If UE 120 were to use the PRT allocation of the source BWP for the target BWP, the PRT position of the target BWP may fall outside the bandwidth of the target BWP, thereby degrading the PAPR of the transmission of UE 120. In addition, semi-statically updating the PRT sequence of UE 120 for each BWP switch may be resource intensive and may introduce significant latency.

[0074] As shown by reference numeral 450, UE 120 and BS 110 may determine a PRT allocation for a target BWP. The determined PRT allocation is shown by reference numeral 460. As shown, the PRT allocation for the target BWP includes a PRT within the bandwidth of the target BWP. Thus, without an explicit indication of the PRT allocation for the BWP, UE 120 and BS 110 determine the PRT allocation for the BWP, which reduces the overhead associated with explicitly indicating the PRT allocation. In some aspects, explicitly indicating the PRT allocation (e.g., as in conjunction with Figure 3As described above, the PRT configuration may provide increased flexibility, which may further reduce the PAPR on the target BWP. As shown in reference numeral 470, the UE 120 may transmit a signal including a PRT symbol set on the target BWP. For example, the UE 120 may determine the location of the PRT symbol set based at least in part on the PRT allocation. Generating the signal including the PRT symbol set has been combined with Figure 3 Describe in more detail.

[0075] As mentioned above, provide Figure 4 As an example. Other examples may be related to Figure 4 Description is different.

[0076] Figure 5 1 is a diagram illustrating an example 500 of determining PRT allocation for a target BWP according to the present disclosure. As shown, example 500 includes UE 120 and BS 110. In example 500, BS 110 configures a PRT sequence, and UE 120 shifts or offsets the PRT sequence to a frequency associated with the active BWP of UE 120.

[0077] like Figure 5 As shown by reference numeral 510, BS 110 may send configuration information to UE 120. In some aspects, the configuration information may configure a BWP set, such as in conjunction with Figure 3 As shown in the figure, the configuration information may indicate a PRT sequence. Reference numeral 520 shows an example of a PRT sequence. The PRT sequence of example 500 may span less than a frequency band (e.g., may not be combined with Figure 4 The bandwidth PRT sequence).

[0078] In some aspects, the configuration information may indicate a plurality of PRT sequences (e.g., via RRC or MAC signaling). For example, the plurality of PRT sequences may be associated with a BWP configured for the UE 120. In some aspects, the plurality of PRT sequences may have a one-to-one relationship with the BWP (e.g., each of the plurality of PRT sequences may be mapped to a corresponding BWP configured for the UE 120). In some aspects, the plurality of PRT sequences may have a one-to-many relationship with the BWP (e.g., one PRT sequence may be mapped to multiple BWPs), a many-to-one relationship with the BWP (e.g., multiple PRT sequences may be mapped to one BWP), or a many-to-many relationship with the BWP (e.g., multiple PRT sequences may be mapped to multiple BWPs).

[0079] As shown at reference numeral 530, UE 120 may determine a PRT allocation for the source BWP. The PRT allocation for the source BWP is shown at reference numeral 540. For example, UE 120 and / or BS 110 may apply a shift or offset to the PRT sequence shown at reference numeral 520 to align the PRT sequence with the source BWP, and may determine the PRT allocation based at least in part on the PRT sequence. In some aspects, UE 120 and BS 110 may apply the shift so that the PRT sequence begins at the first tone or first resource block of the BWP. As further shown, UE 120 and BS 110 may communicate over the source BWP (e.g., using the PRT allocation determined in conjunction with reference numeral 530).

[0080] In some aspects, if the configuration information indicates a plurality of PRT sequences, the UE 120 may determine the PRT allocation for the source BWP based at least in part on a PRT sequence of the plurality of PRT sequences that is configured to correspond to the source BWP.

[0081] As shown at 550, BS 110 may provide an indication to switch from a source BWP to a target BWP. For example, BS 110 may trigger or cause UE 120 to activate the target BWP. As shown at 560, UE 120 and BS 110 may determine a PRT allocation for the target BWP. The determined PRT allocation is shown at 570. For example, UE 120 and / or BS 110 may apply a shift or offset to the PRT sequence shown at 520 to align the PRT sequence with the target BWP, and may determine the PRT allocation based at least in part on the PRT sequence. As shown, the PRT allocation for the target BWP includes PRTs within the bandwidth of the target BWP. For example, as shown at 580, PRTs for PRT sequences that fall outside the bandwidth of the target BWP may not be used. In some aspects, if BS 110 erroneously configures the subset of allocated PRTs to fall outside the BWP, UE 120 may determine whether to use the subset of allocated PRTs based at least in part on the capabilities of UE 120. For example, if UE 120 is able to utilize a bandwidth that includes the BWP and the subset of allocated PRTs, UE 120 may use the subset of allocated PRTs.

[0082] In some aspects, if the configuration information indicates a plurality of PRT sequences, the UE 120 may determine the PRT allocation for the target BWP based at least in part on a PRT sequence of the plurality of PRT sequences that is configured to correspond to the target BWP.

[0083] As shown at reference numeral 590, UE 120 may send a transmission including a set of PRT symbols at the target BWP. For example, UE 120 may determine the location of the set of PRT symbols based at least in part on the PRT allocation. Generating a transmission including a set of PRT symbols has been combined with Figure 3 Describe in more detail.

[0084] In this manner, UE 120 and BS 110 can determine PRT allocations for BWPs based at least in part on PRT sequences that span less than all operating bands of UE 120 or BS 110. The PRT sequence of example 500 may use less overhead than the PRT sequence of example 400, and the PRT sequence of example 400 may involve less computational complexity than the PRT sequence of example 500.

[0085] As mentioned above, provide Figure 5 As an example. Other examples may be related to Figure 5 Different from what is described in .

[0086] Figure 6 6 is a diagram illustrating an example process 600, performed, for example, by a UE, according to the present disclosure. Example process 600 is an example in which a UE (eg, UE 120) performs operations associated with PRT allocation.

[0087] like Figure 6 As shown in FIG, in some aspects, process 600 may include switching from a first bandwidth part to a second bandwidth part (block 610). For example, as described above, the UE (e.g., using antennas 252, demodulators 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, and / or memory 282) may switch from the first bandwidth part to the second bandwidth part.

[0088] like Figure 6 As shown in , in some aspects, process 600 may include determining a PRT allocation for the second bandwidth portion (block 620). For example, as described above, the UE (e.g., using antennas 252, demodulators 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, and / or memory 282) may determine the PRT allocation for the second bandwidth portion.

[0089] like Figure 6As further shown in FIG. 6 , in some aspects, process 600 may transmit a signal including one or more PRTs in one or more locations defined by a PRT allocation for the second bandwidth portion (block 630). For example, as described above, the UE (e.g., using antennas 252, transmit processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, and / or memory 282) may transmit a signal including one or more PRTs based at least in part on the PRT allocation. The one or more PRTs may be located in one or more locations (e.g., PRT locations) defined by the PRT allocation.

[0090] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0091] In a first aspect, determining a PRT allocation is based at least in part on receiving downlink control information indicating a switch to a second bandwidth portion.

[0092] In a second aspect, either alone or in combination with the first aspect, process 600 includes determining (eg, using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) a PRT allocation based at least in part on the downlink control information.

[0093] In a third aspect, either alone or in combination with one or more of the first and second aspects, the downlink control information indicates PRT allocation and indicates switching from the first bandwidth portion to the second bandwidth portion.

[0094] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, the downlink control information is first downlink control information, and process 600 further includes receiving (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) second downlink control information indicating switching from the first bandwidth portion to the second bandwidth portion.

[0095] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, PRT allocation is based at least in part on a PRT sequence configured for an operating frequency band of the UE.

[0096] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the PRT sequence spans the entire operating frequency band.

[0097] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the PRT sequence is configured via radio resource control signaling or medium access control signaling.

[0098] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, process 600 further includes determining a PRT allocation based at least in part on a set of PRT indices identified by the PRT sequence and included in the bandwidth of the second bandwidth portion.

[0099] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the PRT allocation is based at least in part on a PRT sequence shifted to a frequency associated with the second bandwidth portion.

[0100] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, a PRT sequence is configured via radio resource control signaling or medium access control signaling before the UE switches from the first bandwidth part to the second bandwidth part.

[0101] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the PRT sequence is shifted to the first frequency tone or the first resource block of the second bandwidth portion.

[0102] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, one or more PRT indexes identified by the PRT sequence are outside the bandwidth of the second bandwidth portion, and the PRT allocation of the second bandwidth portion excludes the one or more PRT indexes.

[0103] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, one or more PRT indexes identified by the PRT sequence are outside the bandwidth of the second bandwidth portion, and process 600 also includes determining whether to include the one or more PRT indexes in the PRT allocation.

[0104] In a fourteenth aspect, either alone or in combination with one or more of aspects one to thirteen, process 600 includes receiving configuration information indicating a plurality of PRT sequences associated with a plurality of bandwidth portions, wherein the plurality of bandwidth portions include a second bandwidth portion, and wherein the PRT allocation of the second bandwidth portion is based at least in part on a PRT sequence of the plurality of PRT sequences associated with the second bandwidth portion.

[0105] although Figure 6 An example block diagram of process 600 is shown, but in some aspects process 600 may include additional blocks, fewer blocks, different blocks, or different Figure 6 The blocks shown are arranged differently. Additionally, or alternatively, two or more blocks of process 600 can be executed in parallel.

[0106] Figure 7is a diagram illustrating an example process 700, performed, for example, by a base station, in accordance with the present disclosure. Example process 700 is an example in which a base station (eg, base station 110) performs operations associated with PRT allocation.

[0107] like Figure 7 As shown in FIG, in some aspects, process 700 may include causing the UE to switch from a first bandwidth portion to a second bandwidth portion associated with a PRT allocation (block 710). For example, as described above, the base station (e.g., using transmit processor 220, TX MIMO processor 230, modulator 232, antenna 234, demodulator 232, MIMO detector 236, receive processor 238, controller / processor 240, memory 242, and / or scheduler 246) may cause the UE to switch from the first bandwidth portion to the second bandwidth portion. The second bandwidth portion may be associated with the PRT allocation.

[0108] like Figure 7 As shown in , in some aspects, process 700 may include determining a PRT allocation for the second bandwidth portion (block 720). For example, as described above, the base station (e.g., using transmit processor 220, TX MIMO processor 230, modulator 232, antenna 234, demodulator 232, MIMO detector 236, receive processor 238, controller / processor 240, memory 242, and / or scheduler 246) may determine the PRT allocation for the second bandwidth portion.

[0109] like Figure 7 As further shown in FIG. 7 , in some aspects, process 700 may include receiving a signal from a UE that includes one or more PRTs based at least in part on a PRT assignment (block 730). For example, as described above, a base station (e.g., using antenna 234, demodulator 232, MIMO detector 236, receive processor 238, controller / processor 240, and / or memory 242) may receive a signal from a UE that includes one or more PRTs based at least in part on a PRT assignment. The one or more PRTs may be in one or more locations defined by the PRT assignment.

[0110] Process 700 may 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.

[0111] In a first aspect, process 700 includes sending downlink control information indicating a PRT allocation for a second bandwidth portion.

[0112] In a second aspect, either alone or in combination with the first aspect, process 700 includes sending downlink control information associated with causing a UE to switch from a first bandwidth portion to a second bandwidth portion.

[0113] In a third aspect, either alone or in combination with one or more of the first and second aspects, the downlink control information indicates a PRT allocation and indicates switching from the first bandwidth portion to the second bandwidth portion.

[0114] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, the downlink control information is first downlink control information, and process 700 further includes sending second downlink control information indicating switching from the first bandwidth portion to the second bandwidth portion.

[0115] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, process 700 includes configuring a PRT sequence for an operating band of a UE, wherein determining a PRT allocation is based at least in part on the PRT sequence.

[0116] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the PRT sequence spans the entire operating frequency band.

[0117] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the PRT sequence is configured via radio resource control signaling or medium access control signaling.

[0118] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, PRT allocation is based at least in part on a set of PRT indices identified by a PRT sequence and included in the bandwidth of the second bandwidth portion.

[0119] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, determining the PRT allocation is based at least in part on the PRT sequence shifted to a frequency associated with the second bandwidth portion.

[0120] In a tenth aspect, either alone or in combination with one or more of the first to ninth aspects, process 700 includes configuring a PRT sequence via radio resource control signaling or medium access control signaling before the UE switches from the first bandwidth portion to the second bandwidth portion.

[0121] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the PRT sequence is shifted to the first frequency tone or the first resource block of the second bandwidth portion.

[0122] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, one or more PRT indexes identified by the PRT sequence are outside the bandwidth of the second bandwidth portion, and the PRT allocation of the second bandwidth portion excludes the one or more PRT indexes.

[0123] In a thirteenth aspect, either alone or in combination with one or more of aspects one to twelfth, process 700 includes sending configuration information indicating a plurality of PRT sequences associated with a plurality of bandwidth portions, wherein the plurality of bandwidth portions include a second bandwidth portion, wherein the PRT allocation of the second bandwidth portion is based at least in part on a PRT sequence of the plurality of PRT sequences associated with the second bandwidth portion.

[0124] although Figure 7 An example block diagram of process 700 is shown, but in some aspects process 700 may include additional blocks, fewer blocks, different blocks, or different Figure 7 Additionally or alternatively, two or more blocks of process 700 may be executed in parallel.

[0125] The following provides an overview of some aspects of the disclosure:

[0126] Aspect 1: A method of wireless communication performed by an apparatus of a user equipment (UE), comprising: switching from a first bandwidth portion to a second bandwidth portion; and sending a signal comprising one or more peak reduction tones (PRTs), the one or more PRTs being in one or more locations defined by a PRT allocation of the second bandwidth portion.

[0127] Aspect 2: The method according to aspect 1, further comprising: receiving downlink control information indicating switching to the second bandwidth part.

[0128] Aspect 3: The method of aspect 2, further comprising: determining the PRT allocation based at least in part on downlink control information.

[0129] Aspect 4: The method according to any one of aspects 1-3, wherein the PRT allocation is based at least in part on a PRT sequence configured for an operating frequency band of the UE.

[0130] Aspect 5: The method according to Aspect 4, wherein the PRT sequence spans the entire operating frequency band.

[0131] Aspect 6: The method according to aspect 4, wherein the PRT sequence is configured via radio resource control signaling or medium access control signaling.

[0132] Aspect 7: The method according to aspect 4 further includes: determining the PRT allocation based at least in part on a set of PRT indices identified by the PRT sequence and included in the bandwidth of the second bandwidth part.

[0133] Aspect 8: The method of any of aspects 1-7, wherein the PRT allocation is based at least in part on a PRT sequence shifted to a frequency associated with the second bandwidth portion.

[0134] Aspect 9: The method according to aspect 8, wherein the PRT sequence is configured via radio resource control signaling or medium access control signaling before the UE switches from the first bandwidth part to the second bandwidth part.

[0135] Aspect 10: The method of aspect 8, wherein the PRT sequence is shifted to the first frequency tone or the first resource block of the second bandwidth portion.

[0136] Aspect 11: The method according to aspect 8, wherein one or more PRT indexes identified by the PRT sequence are outside the bandwidth of the second bandwidth portion, and wherein the PRT allocation of the second bandwidth portion excludes the one or more PRT indexes.

[0137] Aspect 12: The method according to aspect 8, wherein one or more PRT indexes identified by the PRT sequence are outside the bandwidth of the second bandwidth portion, and wherein the method further comprises: determining whether to include the one or more PRT indexes in the PRT allocation.

[0138] Aspect 13: The method according to any one of Aspects 1-12 further includes: receiving configuration information indicating multiple PRT sequences associated with multiple bandwidth parts, wherein the multiple bandwidth parts include a second bandwidth part, and wherein the PRT allocation of the second bandwidth part is at least partially based on the PRT sequence associated with the second bandwidth part among the multiple PRT sequences.

[0139] Aspect 14: A method of wireless communication performed by a device of a base station, comprising: causing a user equipment (UE) to switch from a first bandwidth portion to a second bandwidth portion associated with a peak reduction frequency modulation (PRT) allocation; and receiving a signal from the UE comprising one or more PRTs, the one or more PRTs being in one or more locations defined by the PRT allocation.

[0140] Aspect 15: The method according to aspect 14, further comprising: sending downlink control information indicating the PRT allocation of the second bandwidth part.

[0141] Aspect 16: The method according to aspect 15, wherein the downlink control information is first downlink control information, and wherein the method further comprises: sending second downlink control information indicating switching from the first bandwidth part to the second bandwidth part.

[0142] Aspect 17: The method according to any one of aspects 14-16 further comprises: configuring a PRT sequence for an operating frequency band of the UE, wherein determining the PRT allocation is based at least in part on the PRT sequence.

[0143] Aspect 18: The method according to aspect 17, wherein the PRT sequence spans the entire operating frequency band.

[0144] Aspect 19: The method of aspect 17, wherein the PRT allocation is based at least in part on a set of PRT indices identified by the PRT sequence and included in the bandwidth of the second bandwidth portion.

[0145] Aspect 20: The method of any of aspects 14-19, wherein the PRT allocation is based at least in part on a PRT sequence shifted to a frequency associated with the second bandwidth portion.

[0146] Aspect 21: The method according to aspect 20 further includes: configuring the PRT sequence via radio resource control signaling or medium access control signaling before the UE switches from the first bandwidth part to the second bandwidth part.

[0147] Aspect 22: The method of aspect 20, wherein the PRT sequence is shifted to the first frequency tone or the first resource block of the second bandwidth portion.

[0148] Aspect 23: The method according to aspect 22, wherein one or more PRT indexes identified by the PRT sequence are outside the bandwidth of the second bandwidth portion, and wherein the PRT allocation of the second bandwidth portion excludes the one or more PRT indexes.

[0149] Aspect 24: The method according to any one of Aspects 14-23 further includes: sending configuration information indicating multiple PRT sequences associated with multiple bandwidth parts, wherein the multiple bandwidth parts include a second bandwidth part, and wherein the PRT allocation of the second bandwidth part is based on a PRT sequence associated with the second bandwidth part among the multiple PRT sequences.

[0150] Aspect 25: An apparatus for wireless communication at a device, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more aspects 1-24.

[0151] Aspect 26: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more aspects of aspects 1-24.

[0152] Aspect 27: An apparatus for wireless communication, comprising at least one component for performing the method of one or more aspects of aspects 1-24.

[0153] Aspect 28: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more aspects of aspects 1-24.

[0154] Aspect 29: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more aspects 1-24.

[0155] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed, and modifications and variations are possible in light of the above disclosure or may be acquired from practice of these aspects.

[0156] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. "Software" should be broadly interpreted to mean examples of instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, packages, routines, subroutines, objects, executable files, threads of execution, processes, and / or functions, whether referring to software, firmware, middleware, microcode, hardware description languages, or otherwise. As used herein, a processor is implemented in hardware and / or a combination of hardware and software.

[0157] It will be apparent that the systems and / or methods described herein can be implemented in various forms of hardware and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit these aspects. Thus, the operation and behavior of the systems and / or methods are described herein without reference to specific software code. It should be understood that software and hardware can be designed to implement the systems and / or methods based, at least in part, on the description herein.

[0158] As used herein, satisfying a threshold may refer to a value greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0159] Although the specific combination of feature is enumerated in claims and / or specification sheets, these combinations are not intended to limit the disclosure of various aspects.In fact, many in these features can be combined in a manner not specifically narrated in the claims and / or undisclosed in the specification sheets.Although each dependent claim listed below may only directly quote a claim, the disclosure of various aspects includes the combination of each dependent claim and each other claim in the claims.As used in this article, the phrase pointing to " at least one " in a series of projects refers to any combination (comprising single member) of those projects.As an example, " at least one of a, b or c " is intended to contain a, b, c, ab, ac, bc and abc, and with any combination of the multiple of identical elements (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc and ccc, or any other order of a, b and c).

[0160] Unless expressly stated otherwise, any element, behavior or instruction used herein should not be interpreted as critical or essential. In addition, as used herein, the terms "a" and "an" are intended to include one or more items and can be used interchangeably with "one or more". Moreover, as used herein, the term "the" is intended to include one or more items related to the term "the" and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, unrelated items, or a combination of related and unrelated items) and can be used interchangeably with "one or more". If only one item is intended to be used, the phrase "only one" or similar language is used. In addition, as used herein, the terms "have", "have", "have..." and the like are intended to be open terms. In addition, unless expressly stated otherwise, the phrase "based on" means "at least partially based on". Furthermore, as used herein, the term "or" when used in a series is intended to be inclusive and used interchangeably with "and / or" unless expressly stated otherwise (e.g., if used in combination with "either of" or "only one of").

Claims

1. An apparatus for performing wireless communication at a user equipment (UE), comprising: at least one memory comprising instructions; as well as at least one processor configured to execute the instructions to cause the apparatus to: switching from a first bandwidth portion to a second bandwidth portion; as well as A signal is transmitted including one or more peak-reducing tone (PRTs) in one or more locations defined by the PRT allocation of the second bandwidth portion.

2. The device according to claim 1, wherein The at least one processor is further configured to cause the apparatus to: Downlink control information is received indicating a switch to the second bandwidth portion.

3. The device according to claim 2, wherein The at least one processor is further configured to cause the apparatus to: The PRT allocation is determined based at least in part on the downlink control information.

4. The device according to claim 1, wherein The PRT allocation is based at least in part on a PRT sequence configured for an operating frequency band of the UE.

5. The device according to claim 4, wherein The PRT sequence spans the entire operating frequency band.

6. The device according to claim 4, wherein The PRT sequence is configured via radio resource control signaling or medium access control signaling.

7. The device according to claim 4, wherein The at least one processor is further configured to cause the apparatus to: The PRT allocation is determined based at least in part on a set of PRT indices identified by the PRT sequence that are included in the bandwidth of the second bandwidth portion.

8. The device according to claim 1, wherein The PRT allocation is based at least in part on a PRT sequence shifted to a frequency associated with the second bandwidth portion.

9. The device according to claim 8, wherein The PRT sequence is configured via radio resource control signaling or medium access control signaling before the UE switches from the first bandwidth part to the second bandwidth part.

10. The device according to claim 8, wherein The PRT sequence is shifted to a first tone or a first resource block of the second bandwidth portion.

11. The device according to claim 8, wherein One or more PRT indexes identified by the PRT sequence are outside the bandwidth of the second bandwidth portion, and wherein the PRT allocation of the second bandwidth portion excludes the one or more PRT indexes.

12. The device according to claim 8, wherein One or more PRT indexes identified by the PRT sequence are outside the bandwidth of the second bandwidth portion, and wherein the at least one processor is further configured to cause the apparatus to: A determination is made as to whether to include the one or more PRT indices in the PRT allocation.

13. The device according to claim 1, wherein The at least one processor is further configured to cause the apparatus to: Configuration information is received indicating a plurality of PRT sequences associated with a plurality of bandwidth parts, wherein the plurality of bandwidth parts includes the second bandwidth part, and wherein PRT allocation for the second bandwidth part is based at least in part on a PRT sequence of the plurality of PRT sequences associated with the second bandwidth part.

14. An apparatus for wireless communication at a base station, comprising: at least one memory comprising instructions; and at least one processor configured to execute the instructions to cause the apparatus to: causing a user equipment (UE) to switch from the first bandwidth portion to a second bandwidth portion associated with a peak reducing tone (PRT) allocation; and A signal is received from the UE including one or more PRTs in one or more locations defined by the PRT allocation.

15. The device according to claim 14, wherein The at least one processor is further configured to cause the apparatus to: Downlink control information indicating a PRT allocation for the second bandwidth portion is transmitted.

16. The device according to claim 15, wherein The downlink control information is first downlink control information, and wherein the at least one processor is further configured to cause the apparatus to: Second downlink control information is sent indicating a switch from the first bandwidth part to the second bandwidth part.

17. The device according to claim 14, wherein The at least one processor is further configured to cause the apparatus to: A PRT sequence is configured for an operating frequency band of the UE, wherein determining the PRT allocation is based at least in part on the PRT sequence.

18. The device according to claim 17, wherein The PRT sequence spans the entire operating frequency band.

19. The device according to claim 17, wherein The PRT allocation is based at least in part on a set of PRT indices identified by the PRT sequence that are included in a bandwidth of the second bandwidth portion.

20. The apparatus according to claim 14, wherein The PRT allocation is based at least in part on a PRT sequence shifted to a frequency associated with the second bandwidth portion.

21. The device according to claim 20, wherein The at least one processor is further configured to cause the apparatus to: The PRT sequence is configured via radio resource control signaling or medium access control signaling before the UE switches from the first bandwidth part to the second bandwidth part.

22. The device according to claim 20, wherein The PRT sequence is shifted to a first tone or a first resource block of the second bandwidth portion.

23. The device according to claim 22, wherein One or more PRT indexes identified by the PRT sequence are outside the bandwidth of the second bandwidth portion, and wherein the PRT allocation of the second bandwidth portion excludes the one or more PRT indexes.

24. The apparatus according to claim 14, wherein The at least one processor is further configured to cause the apparatus to: Configuration information is transmitted indicating a plurality of PRT sequences associated with a plurality of bandwidth parts, wherein the plurality of bandwidth parts includes the second bandwidth part, and wherein the PRT allocation of the second bandwidth part is based at least in part on a PRT sequence of the plurality of PRT sequences associated with the second bandwidth part.

25. A method of wireless communication performed by a device of a user equipment (UE), comprising: switching from a first bandwidth portion to a second bandwidth portion; as well as A signal is transmitted including one or more peak-reducing tone (PRTs) in one or more locations defined by the PRT allocation of the second bandwidth portion.

26. The method according to claim 25, further comprising: Downlink control information is received indicating a switch to the second bandwidth portion.

27. The method according to claim 26, further comprising: The PRT allocation is determined based at least in part on the downlink control information.

28. A method of wireless communication performed by a base station, comprising: causing a user equipment (UE) to switch from the first bandwidth portion to a second bandwidth portion associated with a peak reducing tone (PRT) allocation; as well as A signal is received from the UE including one or more PRTs in one or more locations defined by the PRT allocation.

29. The method of claim 28, further comprising: Downlink control information indicating a PRT allocation for the second bandwidth portion is transmitted.

30. The method according to claim 29, wherein the downlink control information is first downlink control information, and wherein, The method further comprises: Second downlink control information is sent indicating a switch from the first bandwidth part to the second bandwidth part.

31. A computer-readable storage medium having stored thereon instructions that, when executed, cause one or more processors to perform the method of any one of claims 25-30.

32. A computer program product comprising computer readable instructions which, when executed by a processor, cause the processor to perform the method according to any one of claims 25 to 30.

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