Phase tracking reference signal alignment for physical shared channels

Abstract

Methods, systems, and devices for wireless communications are described. A communications device (e.g., a user equipment (UE)) may determine that one or more resource elements associated with a phase tracking reference signal (PRTS) transmission on a first scheduled physical uplink shared channel (PUSCH) and one or more resource elements associated with a data transmission on a second scheduled PUSCH are multiplexed. The UE may puncture one or more resource elements associated with the data transmission on the second scheduled PUSCH and send a PTRS transmission on the first scheduled PUSCH based on the puncturing of the one or more resource elements associated with the data transmission on the second scheduled PUSCH. Alternatively, the UE may rate match one or more resources associated with the PTRS transmission around one or more additional resources and send the PTRS transmission on the scheduled first PUSCH.

Description

Technical Field

[0001] The following relates generally to wireless communications and, more particularly, to phase tracking reference signal (PTRS) alignment for a physical shared channel. Background Art

[0002] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (e.g., long term evolution (LTE) systems, improved LTE (LTE-A) systems, or LTE-A Pro systems) and fifth generation (5G) systems (which may be referred to as new radio (NR) systems). These systems may employ techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiplexing (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM).

[0003] A wireless multiple-access communication system may include one or more base stations or one or more network access nodes, each base station or network access node simultaneously supporting communications for multiple communication devices (which may be otherwise referred to as user equipment (UE)). Due to the increasing demand of communication devices for a wide range of broadband applications and services, some wireless communication systems may experience high levels of wireless communication traffic. Some wireless communication systems may support millimeter wave radio frequency spectrum bands, which can provide communication devices with greater bandwidth to increase wireless communication service capacity. However, operating in millimeter wave radio frequency spectrum bands may result in phase noise factors (e.g., waveform phase fluctuations that adversely affect the signal), which may have a negative impact on the performance of the communication device. Summary of the invention

[0004] Various aspects of the described techniques relate to configuring a wireless communication device (which may be otherwise referred to as a user equipment (UE)) to support phase tracking reference signal (PTRS) alignment, such as for a fifth generation (5G) new radio (NR) system. In some examples, the described techniques may include configuring the UE to determine that one or more time and frequency resources associated with a phase tracking reference signal (PTRS) transmission on a scheduled physical uplink shared channel (PUSCH) and one or more time and frequency resources associated with a data transmission on another scheduled PUSCH are multiplexed. The UE may be configured to puncture one or more time and frequency resources associated with a data transmission on another scheduled PUSCH and send a PTRS transmission on the scheduled PUSCH. Alternatively, the UE may be configured to rate match one or more time and frequency resources associated with the PTRS transmission around one or more additional resources to power boost the PTRS transmission on the scheduled PUSCH. Thus, the described techniques may include features for improving UE operation, and in some examples, may facilitate high reliability and low latency PTRS transmission, among other benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 and Figure 2 An example of a wireless communication system supporting phase tracking reference signal (PTRS) alignment for a physical shared channel in accordance with aspects of the present disclosure is shown.

[0006] Figure 3 and Figure 4 An example of a resource grid supporting PTRS alignment for a physical shared channel in accordance with aspects of the present disclosure is shown.

[0007] Figure 5 and Figure 6 An example of a process flow supporting PTRS alignment for a physical shared channel in accordance with aspects of the present disclosure is shown.

[0008] Figure 7 and Figure 8 A block diagram is shown of an apparatus supporting PTRS alignment for a physical shared channel in accordance with aspects of the present disclosure.

[0009] Fig. 9 A block diagram of a communications manager supporting PTRS alignment for a physical shared channel is shown in accordance with aspects of the present disclosure.

[0010] Fig.10 A diagram illustrating a system including devices that support PTRS alignment for a physical shared channel in accordance with aspects of the present disclosure.

[0011] Fig.11 and Fig.12 A block diagram is shown of an apparatus supporting PTRS alignment for a physical shared channel in accordance with aspects of the present disclosure.

[0012] Fig.13 A block diagram of a communications manager supporting PTRS alignment for a physical shared channel is shown in accordance with aspects of the present disclosure.

[0013] Fig.14 A diagram illustrating a system including devices that support PTRS alignment for a physical shared channel in accordance with aspects of the present disclosure.

[0014] Figure 15-18 A flow chart illustrating a method of supporting PTRS alignment for a physical shared channel in accordance with aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0015] Some wireless communication systems may include communication devices, such as user equipment (UE) and base stations (e.g., next-generation NodeBs or gigabit NodeBs, either of which may be referred to as gNBs), which may support multiple radio access technologies, including fifth-generation (5G) systems, which may be referred to as new radio (NR) systems, and the like. Due to the increasing demand for a wide range of broadband applications and services from communication devices, some wireless communication systems may experience relatively high levels of data traffic. Some wireless communication systems may support millimeter wave radio frequency spectrum bands, which may provide communication devices with greater bandwidth to increase data traffic capacity. However, operating in millimeter wave radio frequency spectrum bands may result in phase noise factors (e.g., waveform phase fluctuations that adversely affect the signal), which may negatively affect the performance of the communication device.

[0016] Some wireless communication systems may support the use of a phase tracking reference signal (PTRS) to track and correct phase noise. However, due to relatively high levels of data traffic, a communication device may be scheduled to send or receive data traffic on multiple data channels including a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH). Due to resource overlap between data channels, these data channels may be subject to a certain degree of interference, resulting in lost data traffic transmission or reception. For example, resources used for PTRS on one data channel may overlap with resources used for data on another data channel.

[0017] Various aspects of the described technology generally involve configuring a communication device (e.g., a UE) to puncture resources of at least one data channel, and more specifically, to puncture resources of a first data channel, the first data channel having data multiplexed with resources of a second data channel for PTRS transmission. A network communication device (e.g., a base station) may configure the UE via a radio resource control (RRC) configuration message or a downlink control information (DCI) message to support puncturing of resources of a first data channel, the first data channel having data multiplexed with resources of a second data channel for PTRS transmission. The UE may also provide capability information to the network communication device, for example, to indicate whether the UE supports puncturing. In some examples, puncturing resources may be based on PTRS density. For example, if the time density or frequency density associated with PTRS or both are greater than (or equal to) or less than a threshold, the resources may be punctured or not punctured, respectively. Additionally or alternatively, in order to reduce interference between multiple data channels, the communication device may be configured to rate match around resources for PTRS transmission on the data channel to avoid mapping data for the second data channel on overlapping resources.

[0018] Certain aspects of the subject matter described herein may be implemented to achieve one or more of the following potential advantages. The techniques employed by the described wireless communication system may provide benefits and enhancements to the operation of the wireless communication system. For example, the described techniques may include features for reducing or eliminating interference between multiple data channels, as well as improvements in power consumption, spectral efficiency, higher data rates, and high reliability, low latency communications, etc.

[0019] Aspects of the disclosure are first described in the context of a wireless communication system.Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flow diagrams related to PTRS alignment for a physical shared channel.

[0020] Figure 1An example of a wireless communication system 100 supporting PTRS alignment for a physical shared channel in accordance with various aspects of the present disclosure is shown. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a long term evolution (LTE) network, an advanced LTE (LTE-A) network, an LTE-A Pro network, or a new radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low-latency communications, communications with low-cost and low-complexity devices. The wireless communication system 100 may support improvements in power consumption, spectral efficiency, higher data rates, and in some examples, may facilitate high reliability and low-latency PTRS operations, among other benefits.

[0021] The base stations 105 may be dispersed throughout a geographic area to form the wireless communication system 100, and may be devices of different forms or with different capabilities. The base stations 105 and the UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base stations 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which the base stations 105 and the UEs 115 may support transmission of signals according to one or more radio access technologies.

[0022] UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary, mobile, or both at different times. UEs 115 may be devices of different forms or with different capabilities. Figure 1 Some example UEs 115 are shown in FIG. 1 . The UEs 115 described herein can communicate with various types of devices, such as other UEs 115, base stations 105, or network devices (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network devices), such as Figure 1 as shown in .

[0023] The base stations 105 may communicate with the core network 130, or with each other, or both. For example, the base stations 105 may interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3 or other interfaces). The base stations 105 may communicate with each other directly (e.g., directly between the base stations 105) or indirectly (e.g., through the core network 130) via the backhaul links 120 (e.g., via X2, Xn or other interfaces), or both. In some examples, the backhaul links 120 may be or include one or more wireless links. One or more of the base stations 105 described herein may include or be referred to by those skilled in the art as a base transceiver, a radio base station, an access point, a radio transceiver, a node B, an eNodeB (eNB), a next generation node B or a giga node B (any of which may be referred to as a gNB), a home node B, a home eNodeB or other appropriate terms.

[0024] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device or a subscriber device, or some other appropriate terminology, where a "device" may also be referred to as a unit, a station, a terminal or a client, etc. UE 115 may also include or may be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or may be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, etc., which may be implemented in various items such as home appliances, or vehicles, meters, etc. The UE 115 described herein is capable of communicating with various types of devices, such as other UEs 115 that sometimes act as relays, as well as base stations 105 and network devices, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc., such as Figure 1 as shown in .

[0025] The UE 115 and the base station 105 may communicate with each other wirelessly via one or more communication links 125 over one or more carriers. The term "carrier" may refer to a set of radio frequency spectrum resources having a defined physical layer structure to support the communication link 125. For example, a carrier for the communication link 125 may include a portion (e.g., bandwidth portion (BWP)) of a radio frequency spectrum band that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling to coordinate operations for the carrier, user data, or other signaling. The wireless communication system 100 may use carrier aggregation or multi-carrier operation to support communication with the UE 115. Depending on the carrier aggregation configuration, the UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used with frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0026] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition signaling or control signaling for coordinating operations with respect to other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located according to a channel raster to be discovered by a UE 115. A carrier may operate in a standalone mode, where initial acquisition and connection may be performed by a UE 115 via a carrier), or a carrier may operate in a non-standalone mode, where a connection is anchored using a different carrier (e.g., the same or different radio access technology).

[0027] The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode) or may be configured to carry downlink and uplink communications (e.g., in TDD mode). A carrier may be associated with a specific bandwidth of a radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as a "system bandwidth" of the carrier or the wireless communication system 100. For example, the carrier bandwidth may be one of a plurality of determined bandwidths of a carrier for a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)). The devices of the wireless communication system 100 (e.g., the base station 105, the UE 115, or both) may have a hardware configuration that supports communications on a specific carrier bandwidth, or may be configurable to support communications on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., subband, BWP) or all of a carrier bandwidth.

[0028] The signal waveform transmitted through the carrier wave may be composed of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may include a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and the subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Therefore, the more resource elements received by the UE 115 and the higher the order of the modulation scheme, the higher the data rate for the UE 115. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further increase the data rate or data integrity for communication with the UE 115.

[0029] One or more numerologies for carriers may be supported, where the numerologies may include a subcarrier spacing ( ) and cyclic prefix. A carrier may be divided into one or more BWPs with the same or different numbering schemes. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communications to a UE 115 may be restricted to the one or more active BWPs. s) to represent the time interval for the base station 105 or the UE 115, where can indicate the maximum supported subcarrier spacing, and The maximum supported discrete Fourier transform (DFT) size may be indicated. Time intervals of communication resources may be organized according to radio frames, each radio frame having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0030] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, the frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into multiple time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include multiple symbol durations (e.g., depending on the length of the cyclic prefix appended to each symbol duration). In some wireless communication systems 100, the time slots may be further divided into multiple micro-time slots containing one or more symbols. In addition to the cyclic prefix, each symbol period may contain one or more (e.g., ) sampling duration. The duration of a symbol may depend on the subcarrier spacing or the operating band. A subframe, slot, microslot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol durations in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in a burst of a shortened TTI (sTTI)).

[0031] Physical channels may be multiplexed on a carrier according to various techniques. For example, physical control channels and physical data channels may be multiplexed on a downlink carrier using one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by a plurality of symbol durations and may extend across a system bandwidth or a subset of a system bandwidth of a carrier. One or more control regions (e.g., CORESETs) may be configured for a group of UEs 115. For example, one or more of the UEs 115 may monitor or search a control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates with one or more aggregation levels arranged in a cascaded manner. The aggregation level for a control channel candidate may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with the coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to multiple UEs 115 and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0032] UE 115 may determine that one or more resource elements associated with a phase tracking reference signal transmission on a first scheduled PUSCH and one or more resource elements associated with a data transmission on a second scheduled PUSCH are multiplexed. UE 115 may, based on the determination, puncture one or more resource elements associated with the data transmission on the second scheduled PUSCH, and send a PTRS transmission on the first scheduled PUSCH based on puncturing one or more resource elements associated with the data transmission on the second scheduled PUSCH. Alternatively, UE 115 may determine one or more resources associated with a PTRS transmission on a scheduled PUSCH. UE 115 may receive an indication of rate matching one or more resources associated with the PTRS transmission, and based on the indication, rate match one or more resources associated with the PTRS transmission around one or more additional resources. Thus, UE 115 may send a PTRS transmission on a scheduled PUSCH based on rate matching.

[0033] Each base station 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hot spots, or other types of cells). The term "cell" may refer to a logical communication entity used for communication with the base station 105 (e.g., via a carrier), and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), etc.) used to distinguish adjacent cells. In some examples, a cell may also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) on which a logical communication entity operates. Depending on various factors (e.g., the capabilities of the base station 105), such a cell may range from a smaller area (e.g., a building, a subset of a building) to a larger area. For example, a cell may be or include a building, a subset of a building, or an external space between or overlapping a geographic coverage area 110, etc.

[0034] A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 115 with a service subscription to a network provider that supports the macro cell. A small cell may be associated with a lower power base station 105 than a macro cell, and the small cell may operate in the same or different (e.g., licensed, unlicensed) frequency band as the macro cell. A small cell may provide unrestricted access to a UE 115 with a service subscription to a network provider, or may provide restricted access to a UE 115 associated with the small cell (e.g., a UE 115 in a closed subscriber group (CSG), a UE 115 associated with a user in a home or office). A base station 105 may support one or more cells, and may also support communication on one or more cells using one or more component carriers. In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access to different types of devices.

[0035] In some examples, the base stations 105 may be mobile and provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. For example, the wireless communication system 100 may include a heterogeneous network in which different types of base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

[0036] The wireless communication system 100 may support synchronous or asynchronous operation. For synchronous operation, the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time. For asynchronous operation, the base stations 105 may have different frame timing, and in some examples, transmissions from different base stations 105 may not be aligned in time. The techniques described herein may be used for either synchronous operation or asynchronous operation.

[0037] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a base station 105 without human intervention. In some examples, M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay the information to a central server or application that utilizes the information or presents the information to a person interacting with the application. Some UEs 115 may be designed to collect information or implement automated behavior of machines or other devices. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based service billing.

[0038] Some UEs 115 may be configured to employ a reduced power consumption mode of operation, such as half-duplex communication (e.g., a mode that supports unidirectional communication by sending or receiving but does not support sending and receiving simultaneously). In some examples, half-duplex communication may be performed at a reduced peak rate. Other power saving techniques for UE 115 include entering a power saving deep sleep mode when not engaged in active communications, operating on a limited bandwidth (e.g., according to narrowband communications), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type that is associated with a defined portion or range (e.g., a subcarrier or resource block (RB) set) within a carrier, within a guard band of a carrier, or outside a carrier.

[0039] The wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication or various combinations thereof. For example, the wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE115 can be designed to support ultra-reliable, low-latency or critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private communication or group communication, and can be supported by one or more mission-critical services (e.g., mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData)). Support for mission-critical functions can include prioritizing services, and mission-critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency can be used interchangeably in this article.

[0040] In some examples, the UE 115 is also able to communicate directly with other UEs 115 (e.g., using a peer-to-peer (P2P) or D2D protocol) via a device-to-device (D2D) communication link 135. One or more UEs 115 using D2D communication may be within the geographic coverage area 110 of the base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of the base station 105 or may not be able to receive transmissions from the base station 105. In some examples, a group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system in which each UE 115 transmits to each other UE 115 in the group. In some examples, the base station 105 facilitates scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115 without involving the base station 105.

[0041] In some systems, the D2D communication link 135 can be an example of a communication channel (e.g., a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, vehicles can communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these communications. Vehicles can signal information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, vehicles in a V2X system can communicate with roadside infrastructure (such as roadside units), or use vehicle-to-network (V2N) communication to communicate with a network via one or more network nodes (e.g., base station 105), or both.

[0042] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connection, and other access, routing or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) for managing access and mobility, and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) for routing packets or interconnecting to an external network. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UE 115 served by a base station 105 associated with the core network 130. User IP packets may be transmitted through the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to a network operator IP service 150. The operator IP service 150 may include access to the Internet, an intranet, an IP multimedia subsystem (IMS), or a packet-switched streaming service.

[0043] Some of the network devices (e.g., base stations 105) may include subcomponents such as access network entities 140, which may be examples of access node controllers (ANCs). Each access network entity 140 may communicate with the UE 115 through one or more other access network transport entities 145 (which may be referred to as radio heads, smart radio heads, or transmission / reception points (TRPs)). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs), or merged into a single network device (e.g., base station 105).

[0044] The wireless communication system 100 may operate using one or more frequency bands, typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Typically, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, but, for macro cells, these waves may penetrate buildings sufficiently to provide service to UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmission using the lower frequencies and longer wavelengths of the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0045] The wireless communication system 100 may also operate in a super high frequency (SHF) region using a frequency band from 3 GHz to 30 GHz (also referred to as a centimeter wave band), or in an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) (also referred to as a millimeter wave band). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between the UE 115 and the base station 105, and the EHF antennas of the corresponding devices may be even smaller and more closely spaced than the UHF antennas. In some examples, this may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may encounter even greater atmospheric attenuation and shorter distances than SHF and UHF transmissions. Transmissions using one or more different frequency regions may be spanned, employing the techniques disclosed herein, and the designated use of frequency bands spanning these frequency regions may differ by country or regulatory agency.

[0046] The wireless communication system 100 can utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 can employ license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. If operating in an unlicensed radio frequency spectrum band, devices such as base stations 105 and UEs 115 can employ carrier sensing for conflict detection and avoidance. In some examples, operations in unlicensed bands can be based on carrier aggregation configurations combined with component carriers operating in licensed bands (e.g., LAA). Operations in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among others.

[0047] The base station 105 or UE 115 may be equipped with multiple antennas that may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located in one or more antenna arrays or antenna panels that may support MIMO operations or transmit beams or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly (e.g., an antenna tower). In some examples, antennas or antenna arrays associated with the base station 105 may be located at different geographical locations. The base station 105 may have an antenna array with multiple rows and columns of antenna ports, and the base station 105 may use the antenna array to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals sent via the antenna ports.

[0048] The base station 105 or UE 115 may use MIMO communications to exploit multipath signal propagation and increase spectral efficiency by sending or receiving multiple signals via different spatial layers. These techniques may be referred to as spatial multiplexing. For example, a transmitting device may send multiple signals via different antennas or different combinations of antennas. Similarly, a receiving device may receive multiple signals via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO technologies include single-user MIMO (SU-MIMO), in which multiple spatial layers are sent to the same receiving device, and multi-user MIMO (MU-MIMO), in which multiple spatial layers are sent to multiple devices.

[0049] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to shape and control antenna beams (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array so that certain signals propagating at a specific orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals transmitted via antenna elements may include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each of the antenna elements may be defined by a set of beamforming weights associated with a specific orientation (e.g., with respect to an antenna array of a transmitting device or a receiving device, or with respect to some other orientation).

[0050] The base station 105 or the UE 115 may use beam scanning techniques as part of a beamforming operation. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with the UE 115. The base station 105 may send some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) multiple times in different directions. For example, the base station 105 may send signals according to different sets of beamforming weights associated with different transmission directions. Transmissions in different beam directions may be used to identify (e.g., by a transmitting device such as the base station 105 or a receiving device such as the UE 115) a beam direction for the base station 105 to later transmit or receive.

[0051] Base station 105 may transmit some signals (e.g., data signals associated with a particular receiving device) in a single beam direction (e.g., a direction associated with a receiving device such as UE 115). In some examples, the beam direction associated with transmissions along the single beam direction may be determined based on signals transmitted in one or more beam directions. For example, UE 115 may receive one or more of the signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signal received by UE 115 with the highest signal quality or other acceptable signal quality.

[0052] In some examples, transmissions by a device (e.g., a base station 105 or a UE 115) may be performed using multiple beam directions, and the device may generate a combined beam for transmission (e.g., from the base station 105 to the UE 115) using a combination of digital precoding or radio frequency beamforming. The UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. The base station 105 may send a precoded or unprecoded reference signal (e.g., a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS)). The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook). Although these techniques are described with reference to signals sent by base station 105 in one or more directions, UE 115 may employ similar techniques to send signals multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115) or to send signals in a single direction (e.g., to send data to a receiving device).

[0053] When receiving various signals from the base station 105 (e.g., synchronization signals, reference signals, beam selection signals, or other control signals), a receiving device (e.g., UE 115) can try multiple reception configurations (e.g., directional listening). For example, the receiving device can try multiple reception directions by receiving via different antenna subarrays, by processing the received signal according to different antenna subarrays, by receiving according to different sets of receive beamforming weights applied to the signal received at multiple antenna elements of the antenna array (e.g., different directional listening weight sets), or by processing the received signal according to different sets of receive beamforming weights applied to the signal received at multiple antenna elements of the antenna array, any of which can be referred to as "listening" according to different reception configurations or reception directions. In some examples, the receiving device can use a single reception configuration to receive along a single beam direction (e.g., if receiving a data signal). A single receive configuration may be aligned on a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or otherwise acceptable signal quality based on listening according to multiple beam directions).

[0054] The wireless communication system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication of the bearer or packet data convergence protocol (PDCP) layer may be IP-based. The radio link control (RLC) layer may perform packet segmentation and reassembly to communicate through logical channels. The medium access control (MAC) layer may perform priority processing, as well as multiplexing of logical channels to transport channels. The MAC layer may also support retransmission of the MAC layer using error detection techniques, error correction techniques, or both, to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer may provide the establishment, configuration, and maintenance of an RRC connection between the UE 115 and the base station 105 or the core network 130 for radio bearers of user plane data. At the physical layer, transport channels may be mapped to physical channels.

[0055] UE 115 and base station 105 may support retransmission of data to increase the likelihood that the data is successfully received. Hybrid automatic repeat request (HARQ) feedback is a technique for increasing the likelihood of correctly receiving data through communication link 125. HARQ may include a combination of error correction (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve the throughput of the MAC layer under poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, a device may support HARQ feedback for the same time slot, wherein the device may provide HARQ feedback for data received in a previous symbol of the time slot in a specific time slot. In other examples, the device may provide HARQ feedback in a subsequent time slot, or according to some other time interval.

[0056] UE 115 may support the use of PTRS to track and correct phase noise factors. However, due to the high level of data traffic, UE 115 may be scheduled to send or receive data traffic on multiple data channels including PDSCH and PUSCH. Due to overlap between data channels, these data channels may be subject to a certain degree of interference, resulting in lost data traffic transmission or reception. For example, resources associated with PTRS transmission on one data channel may overlap with resources associated with data on different data channels, resulting in data transmission interfering with PTRS transmission. In order to reduce or eliminate interference between multiple data channels and improve the reliability of data traffic transmission including PTRS transmission, various aspects of the described technology involve configuring UE 115 to puncture resources of at least one data channel, wherein the at least one data channel has data multiplexed with resources of another data channel for PTRS transmission.

[0057] The base station 105 may configure the UE 115 via an RRC configuration message or a DCI message to support puncturing of resources of at least one data channel having data multiplexed with resources of another data channel for PTRS transmission. In some examples, the UE 115 may provide capability information to the base station 105 to indicate whether the UE 115 supports puncturing. In some examples, puncturing of resources may be based on PTRS density. For example, if the time density or frequency density or both associated with the PTRS transmission is greater than or less than a threshold, the resources may be punctured or not punctured accordingly. Additionally or alternatively, in order to reduce or eliminate interference between multiple data channels, the UE 115 may be configured to rate match around the PTRS resources on the data channel to avoid mapping data to overlapping resources associated with different channels. In some examples, the PTRS resources may be power-boosted based on the rate-matched resources.

[0058] Figure 2 An example of a wireless communication system 200 that supports PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The wireless communication system 200 can implement aspects of the wireless communication system 100. For example, the wireless communication system 200 may include a base station 105-a and a UE 115-a within a geographic coverage area 110-a. The base station 105-a and the UE 115-a may be as described in reference Figure 1 Examples of base stations 105 and UEs 115 are described. In some examples, the wireless communication system 200 can support multiple radio access technologies, including 4G systems such as LTE systems, LTE-A systems, or LTE-A Pro systems, and 5G systems (which can be referred to as NR systems). The wireless communication system 200 can support improvements in power consumption, spectrum efficiency, higher data rates, and in some examples, can facilitate high reliability and low latency PTRS transmission, among other benefits.

[0059] The base station 105-a and the UE 115-a may be configured with multiple antennas that may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output communications, or beamforming. The antennas of the base station 105-a and the UE 115-a may be located in one or more antenna arrays or antenna panels that may support multiple-input multiple-output operations or transmit or receive beamforming. For example, the base station 105-a antenna or antenna array may be located at an antenna assembly (e.g., an antenna tower). In some examples, the antennas or antenna arrays associated with the base station 105-a may be located at different geographical locations. The base station 105-a may have an antenna array having multiple rows and columns of antenna ports that the base station 105-a may use to support beamforming for communications with the UE 115-a. Similarly, the UE 115-a may have one or more antenna arrays that may support various multiple-input multiple-output or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted via one or more antenna ports.

[0060] Thus, the base station 105-a and the UE 115-a may be configured to support directional communication 205 (e.g., beamformed communication) using multiple antennas. The base station 105-a and the UE 115-a may communicate via the directional communication 205 using multiple component carriers. For example, the base station 105-a and the UE 115-a may be configured to support multiple downlink component carriers and multiple uplink component carriers. The base station 105-a and the UE 115-a may be configured to support the directional communication 205 on a carrier bandwidth, or may be configured to support the directional communication 205 on one of a plurality of carrier bandwidths.

[0061] In some cases, UE 115-a may experience phase noise factors, which may affect the performance of UE 115-a. UE 115-a in the wireless communication system 200 may support operations for conserving resources (e.g., time and frequency resources of the wireless communication system 100) or battery life of UE 115-a. In some examples, UE 115-b may be configured to support operations for managing or improving directional communication 205 between base station 105-a and UE 115-a. For example, base station 105 may configure UE 115 to support PTRS alignment on a data channel (e.g., PUSCH) so that UE 115-a can track phase noise factors in the wireless communication system 200 and reduce or eliminate the phase noise factors.

[0062] The base station 105 - a may allocate time and frequency resources for one or more data channels including a downlink data channel (eg, PDSCH) and an uplink data channel (eg, PUSCH). Figure 2 In the example of , the base station 105-a can schedule a first PUSCH 225-a and a second PUSCH 225-b. The UE 115-a can determine one or more overlapping resources 230 associated with the PUSCH 225-a and the PUSCH 225-b. For example, the UE 115-a can determine that one or more resource elements of a PTRS transmission scheduled on the PUSCH 225-a overlap with one or more resource elements of a data transmission scheduled on the PUSCH 225-b. In other words, the PTRS transmission on the scheduled PUSCH 225-a can be multiplexed with the data transmission on the scheduled PUSCH 225-b.

[0063] In some cases, overlap between one or more resource elements of a PTRS transmission scheduled on PUSCH 225-a and one or more data elements of a data transmission scheduled on PUSCH 225-b may cause interference to the PTRS transmission. In order to reduce or eliminate interference and improve the reliability of PTRS transmission, UE 115-a may be configured to puncture one or more resource elements of scheduled PUSCH 225-b associated with the data transmission. In some examples, base station 105-a may send an indication, for example in an RRC configuration message or a DCI message, to indicate to UE 115-a that one or more overlapping resources 230 associated with PUSCH 225-b are to be punctured.

[0064] For example, UE 115-a may, based on receiving an indication from base station 105-a, puncture overlapping resources 230. Based on puncturing overlapping resources 230, UE 115-a may send PTRS transmissions on scheduled PUSCH 225-a without interference from scheduled PUSCH 225-b because no data transmission occurs on scheduled PUCCH 225-a on punctured resource elements associated with scheduled PUSCH 225-b.

[0065] Optionally, the UE 115-a may be configured to rate match one or more resource elements of a PTRS transmission on a scheduled PUSCH 225-a around one or more other resources. These other resources may be associated with the scheduled PUSCH 225-b. In some examples, rate matching may include selectively repeating or puncturing resources to match the number of resources used for data with the number of resources being transmitted. In some examples, rate matching of a PTRS transmission on a scheduled PUSCH 225-a may enable the UE 115-a to avoid mapping data associated with the scheduled PUSCH 225-b on one or more resources of the PTRS transmission. Avoiding mapping data on one or more resources of the PTRS transmission may reduce or eliminate interference between data channels. In some examples, the UE 115-a may power-boost a PTRS transmission based on matching the rate of the resources. For example, the UE 115-a may determine that one or more resources are not used for data transmission due to rate matching for PTRS resources, and may dedicate the transmit power associated with the unused resources to the PTRS resources.

[0066] By implementing various aspects of the present disclosure, the wireless communication system 200 can therefore include features for improving PTRS operation of data channels, and in some examples, can facilitate high reliability and low latency PTRS transmissions. The wireless communication system 200 can also include features for reducing phase noise factors by improving the transmission of PTRS transmissions for data channels.

[0067] Figure 3 An example of a resource grid set 300 supporting PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The resource grid set 300 may be implemented with reference to Figure 1 and Figure 2Aspects of the wireless communication systems 100 and 200 described herein. For example, the resource grid set 300 can be based on a configuration performed by the base station 105 and implemented by the UE 115. The resource grid set 300 can be used to achieve higher reliability and lower latency PTRS operations in the wireless communication system. The resource grid set 300 can also be based on a configuration performed by the base station 105 and implemented by the UE 115 to reduce power consumption of the UE 115 when performing phase tracking operations (e.g., PTRS transmissions), among other benefits.

[0068] exist Figure 3 In the example shown in , the resource grid set 300 includes a first resource grid 305-a and a second resource grid 305-b, which include time resources (e.g., symbols, mini-slots, time slots, subframes, or frames) and frequency resources (e.g., carriers or subcarriers). The combination of time resources (e.g., symbols) and frequency resources (e.g., subcarriers) can define associated resource elements. Figure 3 In the example shown in , the base station 105 schedules the UE 115 with multiple PUSCHs. For example, the first resource grid 305-a can be associated with the first scheduled PUSCH, and the second resource grid 305-b can be associated with the second scheduled PUSCH. In some examples, the UE 115 can use one or more PTRS resources 315-a associated with the first resource grid 305-a to send PTRS transmissions on the first scheduled PUSCH. Similarly, the UE 115 can use one or more PTRS resources 315-b associated with the second resource grid 305-b to send PTRS transmissions of the second scheduled PUSCH.

[0069] One or more resources (e.g., resource elements) associated with the first resource grid 305-a may overlap with one or more resources (e.g., resource elements) associated with the second resource grid 305-b. For example, one or more PTRS resources 315-a associated with the first resource grid 305-a may overlap with one or more data resources 320-b associated with the second resource grid 305-b. Thus, one or more PTRS resources 315-a associated with PTRS transmissions on the first scheduled PUSCH may be multiplexed with one or more data resources 320-b associated with data transmissions on the second scheduled PUSCH. The UE 115 may puncture the one or more data resources 320-b associated with data transmissions on the second scheduled PUSCH to improve PTRS transmissions on the first scheduled PUSCH on the one or more PTRS resources 315-a.

[0070] like Figure 3As shown in the example, one or more PTRS resources 315-b associated with the second resource grid 305-b may overlap with one or more data resources 320-a associated with the first resource grid 305-a. That is, one or more PTRS resources 315-b associated with PTRS transmission on the second scheduled PUSCH may be multiplexed with one or more data resources 320-a associated with data transmission on the first scheduled PUSCH. Similar to what is described above, UE 115 may puncture one or more data resources 320-a associated with data transmission on the first scheduled PUSCH to improve PTRS transmission on the second scheduled PUSCH on one or more PTRS resources 315-b.

[0071] The UE 115 may determine to puncture one or more resources associated with the resource grid set 300 based on signaling from the base station 105. For example, the UE 115 may receive an indication in an RRC configuration message or a DCI message that indicates to the UE 115 that one or more resource elements associated with the data transmission on the second scheduled PUSCH are punctured based on the one or more resource elements associated with the PTRS transmission on the first scheduled PUSCH and the one or more resource elements associated with the data transmission on the second scheduled PUSCH are multiplexed. If the one or more resource elements associated with the PTRS transmission on the first scheduled PUSCH and the one or more resource elements associated with the data transmission on the second scheduled PUSCH are multiplexed (e.g., overlapped), then puncturing the resource elements implements interference mitigation for the UE 115. Based on implementing puncturing, the UE 115 may also reduce its power consumption and promote advantages such as high reliability and low latency PTRS transmission.

[0072] Figure 4 An example of a resource grid set 400 supporting PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The resource grid set 400 may be implemented with reference to Figure 1 and Figure 2 Aspects of the wireless communication systems 100 and 200 described herein. For example, the resource grid set 400 can be based on a configuration performed by the base station 105 and implemented by the UE 115. The resource grid set 400 can be used to achieve higher reliability and lower latency PTRS operation in the wireless communication system. The resource grid set 400 can also be based on a configuration performed by the base station 105 and implemented by the UE 115 to reduce power consumption of the UE 115 when performing phase tracking operations, as well as other advantages.

[0073] exist Figure 4In the example shown in , the resource grid set 400 includes a first resource grid 405-a and a second resource grid 405-b, which include time resources (e.g., symbols, mini-slots, time slots, subframes, or frames) and frequency resources (e.g., carriers or subcarriers). The combination of time resources (e.g., symbols) and frequency resources (e.g., subcarriers) can define associated resource elements. Figure 3 In the example shown in , the base station 105 schedules the UE 115 with multiple PUSCHs. For example, the first resource grid 405-a can be associated with the first scheduled PUSCH, and the second resource grid 405-b can be associated with the second scheduled PUSCH. In some examples, the UE 115 can use one or more PTRS resources 415 associated with the first resource grid 405-a to send PTRS transmissions on the first scheduled PUSCH. Similarly, the UE 115 can use one or more PTRS resources 415 associated with the second resource grid 405-b to send PTRS transmissions of the second scheduled PUSCH.

[0074] The UE 115 may be configured to rate match one or more resources associated with the resource grid set 400 to produce one or more rate-matched resources. For example, the UE 115 may rate match one or more resources 420 of the first scheduled PUSCH or the second scheduled PUSCH or both. In some examples, the UE 115 may receive an indication (e.g., an RRC configuration message, a DCI message) from the base station 105 indicating the number of resource elements (e.g., one or more resources 420) around which rate matching is to be performed. In some examples, the UE 115 may perform a power boost operation on the PTRS resource 415 based on the rate-matched resource. In some implementations, if there is no second resource set associated with the second PTRS transmission, the PTRS resource 415 may be power boosted. In some examples, the PTRS resource 415 may be a first PTRS resource set, wherein the UE 115 is configured to send PTRS on the first PTRS resource set 415 and the second PTRS resource set 425. In some examples, the UE 115 may transmit a first PTRS transmission for the scheduled PUSCH and may be instructed not to transmit on the second set of PTRS resources 420. In such an example, power boosting may be applied to the first set of PTRS resources 415 for PTRS transmission. Based on achieving rate matching, the UE 115 may experience high reliability and low latency PTRS transmission, among other advantages.

[0075] Figure 5An example of a process flow 500 for supporting PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The process flow 500 may be implemented with reference to Figure 1-4 Aspects of the wireless communication systems 100 and 200 described herein. The process flow 500 may be based on a configuration performed by a base station 105-b or a UE 115-b and implemented by the UE 115-b. The process flow 500 may enable higher reliability and lower latency reference signaling operations (e.g., PTRS transmissions) in a wireless communication system. The process flow 500 may also be based on a configuration performed by a base station 105-b or a UE 115-b and implemented by the UE 115-b to reduce power consumption of the UE 115-b when performing phase tracking operations (e.g., PTRS transmissions), among other advantages. The base station 105-b and the UE 115-b may be examples of the base station 105 and the UE 115, as shown in FIG. Figure 1 and Figure 2 In some examples, other operations can be added to process flow 500.

[0076] At 505, the base station 105-b may send a message including an indication of: based on one or more resource elements associated with PTRS transmission on the first scheduled PUSCH and one or more resource elements associated with data transmission on the second scheduled PUSCH being multiplexed, puncturing one or more resource elements associated with data transmission on the second scheduled PUSCH. For example, the base station 105-b may schedule multiple PUSCHs including a first PUSCH and a second PUSCH, and based on the multiple scheduled PUSCHs, may send a message to indicate to the UE 115-b that one or more resource elements associated with data transmission on the second scheduled PUSCH are punctured. In some examples, the base station 105-b may send an RRC configuration message including an indication of puncturing one or more resource elements associated with data transmission on the second scheduled PUSCH. In some other examples, the base station 105-b may send a DCI message including an indication of puncturing one or more resource elements associated with data transmission on the second scheduled PUSCH. In some examples, base station 105-b may receive UE capability information from UE 115-b prior to sending the indication. The UE capability information may include an indication that UE 115-b is capable of puncturing one or more resource elements associated with data transmission on the second scheduled PUSCH.

[0077] At 510, UE 115-b may determine that one or more resource elements associated with a PTRS transmission on a first scheduled PUSCH and one or more resource elements associated with a data transmission on a second scheduled PUSCH are multiplexed. For example, UE 115-b may determine that one or more resource elements associated with a PTRS transmission on a first scheduled PUSCH and one or more resource elements associated with a data transmission on a second scheduled PUSCH are multiplexed based on receiving a message (e.g., an RRC configuration message or a DCI message) from base station 105-b. At 515, UE 115-b may puncture one or more resource elements associated with a data transmission on the second scheduled PUSCH. At 520, UE 115-b may send a PTRS transmission on the first scheduled PUSCH based on puncturing one or more resource elements associated with a data transmission on the second scheduled PUSCH.

[0078] In some examples, UE 115-b may determine a PTRS density associated with the first scheduled PUSCH (e.g., in the time domain or the frequency domain or both). In some examples, the PTRS may have a time density of four, two, or one symbol. In some examples, PTRS can have a frequency density of four or two resource blocks. . UE 115-b may determine that the PTRS density associated with the first scheduled PUSCH is greater than a PTRS density threshold. Based on determining that the PTRS density associated with the first scheduled PUSCH is greater than the PTRS density threshold, UE 115-b may puncture one or more resource elements associated with data transmission on the second scheduled PUSCH. Alternatively, if the PTRS density associated with the first scheduled PUSCH is greater than the PTRS density threshold, UE 115-b may avoid puncturing one or more resource elements associated with data transmission on the second scheduled PUSCH.

[0079] In some other examples, UE 115-b may determine that the PTRS density associated with the first scheduled PUSCH is less than a PTRS density threshold. Based on determining that the PTRS density associated with the first scheduled PUSCH is less than the PTRS density threshold, UE 115-b may puncture one or more resource elements associated with data transmission on the second scheduled PUSCH. Alternatively, if the PTRS density associated with the first scheduled PUSCH is less than the PTRS density threshold, UE 115-b may avoid puncturing one or more resource elements associated with data transmission on the second scheduled PUSCH. In some examples, the determination of whether to puncture based on the PTRS density threshold may be further based on: a determination of interference caused by the PTRS density and multiple overlapping resources.

[0080] Thus, process flow 500 can enable UE 115-b to puncture one or more resource elements associated with data transmission on a second scheduled PUSCH. If one or more resource elements associated with PTRS transmission on a first scheduled PUSCH and one or more resource elements associated with data transmission on a second scheduled PUSCH are multiplexed or overlapping, puncturing the resource elements can achieve interference mitigation for UE 115-b. Based on implementing puncturing as described herein in process flow 500, one or more processors of UE 115-b (e.g., a processor controlling a UE communication manager as described herein or merged with a UE communication manager) can achieve reduced power consumption, and can achieve higher reliability and lower latency for wireless communications (e.g., reference signal transmissions), as well as other advantages.

[0081] Figure 6 FIG. 6 is an example of a process flow 600 for supporting PTRS alignment for a physical shared channel according to aspects of the present disclosure. The process flow 600 may be implemented with reference to Figure 1-4 Aspects of the wireless communication systems 100 and 200 described herein. Process flow 600 may be based on configuration performed by a base station 105-c and implemented by a UE 115-c. Process flow 600 may be based on configuration performed by a base station 105-c or a UE 115-c and implemented by a UE 115-c to achieve higher reliability and lower latency for reference PTRS transmissions in a wireless communication system. Process flow 600 may also be based on configuration performed by a base station 105-c or a UE 115-c and implemented by a UE 115-c to reduce power consumption of the UE 115-c when performing phase tracking operations (e.g., PTRS transmissions), as well as other advantages. The base station 105-c and the UE 115-c may be examples of base stations 105 and UE 115, such as reference Figure 1 and Figure 2 In some examples, other operations can be added to process flow 600.

[0082] At 605, the base station 105-c may send a message including an indication of rate matching one or more resources associated with a scheduled PTRS transmission on a PUSCH around one or more other resources. Each of the one or more resources and the one or more other resources may include a resource element, a resource block, or other resources defined by a set of symbols or time slots. In some examples, the base station 105-c may send an RRC configuration message including an indication of rate matching one or more resources associated with a scheduled PTRS transmission on a PUSCH around one or more other resources. For example, the indication may be referred to as a rate matching indicator. In some other examples, the base station 105-c may send a DCI message including an indication of rate matching one or more resources associated with a scheduled PTRS transmission on a PUSCH around one or more other resources. In such an example, the indication may be a zero power reference signal indicator.

[0083] At 610, UE 115-b may determine one or more resource elements associated with a scheduled PTRS transmission on a PUSCH. At 615, UE 115-c may rate match the one or more resources associated with the scheduled PTRS transmission on the PUSCH around one or more other resources. For example, UE 115-c may determine one or more resources associated with a scheduled PTRS transmission on the PUSCH based on receiving a message (e.g., an RRC configuration message or a DCI message) from base station 105-c, and rate match the one or more resources associated with the PTRS transmission around the one or more other resources.

[0084] The UE 115-c may determine a set of PTRS transmission modes based on a message (e.g., an RRC configuration message or a DCI message) received from the base station 105-c. The UE 115-c may rate match one or more resources associated with the PTRS transmission around one or more other resources based on at least one PTRS transmission mode in the set of PTRS transmission modes. In some examples, the UE 115-c may determine a PTRS transmission density, an offset of one or more resources associated with the PTRS transmission, or a location of one or more resources associated with the PTRS transmission in a resource grid (e.g., a resource block). The UE 115-c may rate match one or more resources associated with the PTRS transmission around one or more other resources based on the PTRS transmission density, an offset of one or more resources associated with the PTRS transmission, or a location of one or more resources associated with the PTRS transmission in a resource grid (e.g., a resource block).

[0085] In some examples, the UE 115-c may determine one or more antenna ports associated with a PTRS transmission based at least in part on an indication in a message (e.g., an RRC configuration message or a DCI message) received from the base station 105-c. The indication may be a reference signal port indicator. The UE 115-c may rate match one or more resources associated with the PTRS transmission around one or more other resources based on the one or more antenna ports. At 620, the UE 115-c may, for example, send a PTRS transmission on a scheduled PUSCH based on rate matching around one or more other resources. In some examples, the UE 115-c may power boost a PTRS transmission on a scheduled PUSCH based on rate matching one or more resources associated with the PTRS transmission.

[0086] Thus, process flow 600 can enable UE 115-c to rate match one or more resources associated with PTRS transmissions around one or more additional resources. If one or more resource elements associated with PTRS transmissions on a first scheduled PUSCH and one or more resource elements associated with data transmissions on a second scheduled PUSCH are multiplexed or overlapped, the rate matched resources can achieve interference mitigation for UE 115-c. Based on implementing rate matching as described herein in process flow 600, one or more processors of UE 115-c (e.g., a processor controlling a UE communication manager as described herein or merged with a UE communication manager) can achieve reduced power consumption, and can achieve higher reliability and lower latency for wireless communications (e.g., reference signal transmissions), as well as other advantages.

[0087] Figure 7 A block diagram of a device 705 supporting PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The device 705 may be an example of aspects of a UE 115 as described herein. The device 705 may include a receiver 710, a UE communication manager 715, and a transmitter 720. The UE communication manager 715 may be implemented at least in part by one or both of a modem and a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0088] The receiver 710 may receive information, such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to PTRS alignment for physical shared channels, etc.). The information may be transmitted to other components of the device 705. The receiver 710 may be a reference Fig.10Various examples of transceiver 1020 are described. Receiver 710 may utilize a single antenna or a group of antennas.

[0089] The UE communication manager 715 may determine that one or more resource elements associated with the PTRS transmission on the first scheduled PUSCH and one or more resource elements associated with the data transmission on the second scheduled PUSCH are multiplexed. The UE communication manager 715 may, based on the determination, puncture the one or more resource elements associated with the data transmission on the second scheduled PUSCH, and send the PTRS transmission on the first scheduled PUSCH based on puncturing the one or more resource elements associated with the data transmission on the second scheduled PUSCH.

[0090] The UE communication manager 715 may be implemented as an integrated circuit or chipset for a mobile device modem, and the receiver 710 and the transmitter 720 may be implemented as analog components (e.g., amplifiers, filters, antennas) coupled to the mobile device modem to implement wireless transmission and reception. The UE communication manager 715 as described herein may be implemented to achieve one or more potential improvements. At least one implementation may enable the UE communication manager 715 to puncture one or more resource elements associated with data transmission on the second scheduled PUSCH. Based on implementing puncturing as described herein, one or more processors of the device 705 (e.g., a processor controlling the UE communication manager 715 or merged with the UE communication manager 715) may experience reduced power consumption and facilitate high reliability and low latency wireless communications, among other advantages.

[0091] The UE communication manager 715 may also determine one or more resources associated with a PTRS transmission on a scheduled PUSCH. The UE communication manager 715 may also receive an indication of rate matching the one or more resources associated with the PTRS transmission and, based on the indication, rate match the one or more resources associated with the PTRS transmission around one or more additional resources. The UE communication manager 715 may send the PTRS transmission on the scheduled PUSCH based on the rate matching.

[0092] The UE communication manager 715 can be implemented as an integrated circuit or chipset of a mobile device modem, and the receiver 710 and the transmitter 720 can be implemented as analog components (e.g., amplifiers, filters, antennas) coupled to the mobile device modem to achieve wireless transmission and reception. The UE communication manager 715 as described herein can be implemented to achieve one or more potential improvements. At least one implementation can enable the UE communication manager 715 to rate match one or more resources associated with PTRS transmission around one or more additional resources. Based on implementing the rate matching as described herein, one or more processors of the device 705 (e.g., a processor that controls the UE communication manager 715 or is merged with the UE communication manager 715) can experience reduced power consumption and promote high reliability and low latency wireless communication, as well as other advantages.

[0093] The transmitter 720 can transmit signals generated by other components of the device 705. In some examples, the transmitter 720 can be co-located with the receiver 710 in a transceiver component. For example, the transmitter 720 can be a reference Fig.10 Examples of various aspects of the described transceiver 1020. The transmitter 720 may utilize a single antenna or a group of antennas.

[0094] Figure 8 A block diagram of a device 805 supporting PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The device 805 may be an example of some aspects of the device 705 or UE 115 as described herein. The device 805 may include a receiver 810, a UE communication manager 815, and a transmitter 845. The UE communication manager 815 may be implemented at least in part by one or both of a modem and a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0095] The receiver 810 may receive information, such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to PTRS alignment for physical shared channels, etc.). The information may be transmitted to other components of the device 805. The receiver 810 may be a reference Fig.10 Examples of various aspects of the described transceiver 1020. The receiver 810 may utilize a single antenna or a group of antennas.

[0096] The UE communication manager 815 may include a resource component 820, a puncturing component 825, a reference signal component 830, a message component 835, and a rate component 840. The resource component 820 may determine that one or more resource elements associated with a PTRS transmission on a first scheduled PUSCH and one or more resource elements associated with a data transmission on a second scheduled PUSCH are multiplexed. The puncturing component 825 may puncture one or more resource elements associated with a data transmission on the second scheduled PUSCH based on the determination. The reference signal component 830 may send a PTRS transmission on the first scheduled PUSCH based on puncturing one or more resource elements associated with a data transmission on the second scheduled PUSCH. The resource component 820 may determine one or more resources associated with a PTRS transmission on a scheduled PUSCH. The message component 835 may receive an indication of rate matching one or more resources associated with a PTRS transmission. The rate component 840 may rate match one or more resources associated with a PTRS transmission around one or more additional resources based on the indication. Reference signal component 830 can send a PTRS transmission on the scheduled PUSCH based on rate matching.

[0097] The transmitter 845 can transmit signals generated by other components of the device 805. In some examples, the transmitter 845 can be co-located with the receiver 810 in a transceiver module. For example, the transmitter 845 can be a reference Fig.10 Examples of various aspects of the described transceiver 1020. The transmitter 845 may utilize a single antenna or a group of antennas.

[0098] Fig. 9 A block diagram of a UE communication manager 905 supporting PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The UE communication manager 905 may include a resource component 910, a puncturing component 915, a reference signal component 920, a message component 925, a density component 930, an overlap component 935, a rate component 940, a mode component 945, a port component 950, and a power component 955. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0099] The resource component 910 may determine that one or more resource elements associated with a PTRS transmission on a first scheduled PUSCH and one or more resource elements associated with a data transmission on a second scheduled PUSCH are multiplexed. In some examples, the resource component 910 may determine one or more resources associated with a PTRS transmission on a scheduled PUSCH. The one or more resources include resource elements, resource blocks, symbols, or time slots. The one or more resources include one or more periodic resources.

[0100] The puncturing component 915 may puncture one or more resource elements associated with the data transmission on the second scheduled PUSCH based on the determination. The reference signal component 920 may send a PTRS transmission on the first scheduled PUSCH based on the puncturing of one or more resource elements associated with the data transmission on the second scheduled PUSCH. In some examples, the reference signal component 920 may send a PTRS transmission on the scheduled PUSCH based on rate matching. In some examples, the reference signal component 920 may determine to avoid a second PTRS transmission on the scheduled PUSCH based on an indication. In some examples, the reference signal component 920 may power boost a PTRS transmission on the scheduled PUSCH based on the determination to avoid a second PTRS transmission on the scheduled PUSCH.

[0101] The message component 925 may receive an indication to rate match one or more resources associated with the PTRS transmission. In some examples, the message component 925 may receive an RRC configuration message including an indication to puncture one or more resource elements associated with the data transmission on the second scheduled PUSCH. In some examples, puncturing the one or more resource elements associated with the data transmission on the second scheduled PUSCH is based on the received RRC configuration message. In some examples, the message component 925 may determine the UE capability to puncture the one or more resource elements associated with the data transmission on the second scheduled PUSCH.

[0102] Message component 925 may send UE capability information including an indication of the UE capability to puncture one or more resource elements associated with data transmission on a second scheduled PUSCH. In some examples, puncturing one or more resource elements associated with data transmission on a second scheduled PUSCH is based on the sent UE capability information. Message component 925 may receive an RRC configuration message including an indication of rate matching one or more resources associated with a PTRS transmission. In some examples, rate matching one or more resources associated with a PTRS transmission is based on the received RRC configuration message. Message component 925 may receive a DCI message including an indication of rate matching one or more resources associated with a PTRS transmission. In some examples, rate matching one or more resources associated with a PTRS transmission is based on the received DCI message.

[0103] The rate component 940 can rate match one or more resources associated with the PTRS transmission around one or more additional resources based on the indication. The density component 930 can determine the PTRS density associated with the first scheduled PUSCH. In some examples, the density component 930 can determine that the PTRS density associated with the first scheduled PUSCH meets a threshold. In some examples, puncturing one or more resource elements associated with the data transmission on the second scheduled PUSCH is based on determining that the PTRS density associated with the first scheduled PUSCH meets the threshold. The density component 930 can determine the PTRS density associated with the first scheduled PUSCH in the time domain or the frequency domain or both.

[0104] The density component 930 may determine that the PTRS density in the time domain or the frequency domain or both is greater than a threshold. In some examples, puncturing one or more resource elements associated with data transmission on the second scheduled PUSCH is based on determining that the PTRS density in the time domain or the frequency domain or both is greater than a threshold. The density component 930 may determine that the PTRS density in the time domain or the frequency domain or both is less than a threshold. In some examples, puncturing one or more resource elements associated with data transmission on the second scheduled PUSCH is based on determining that the PTRS density in the time domain or the frequency domain or both is less than a threshold. The density component 930 may determine the PTRS transmission density, the offset of one or more resources associated with the PTRS transmission, or the location of one or more resources associated with the PTRS transmission based on the selected PTRS transmission mode. In some examples, rate matching of one or more resources associated with the PTRS transmission is based on the PTRS transmission density, the offset of one or more resources associated with the PTRS transmission, or the location of one or more resources associated with the PTRS transmission.

[0105] The overlapping component 935 can determine that the first scheduled PUSCH partially overlaps with the second scheduled PUSCH. In some examples, puncturing one or more resource elements associated with data transmission on the second scheduled PUSCH is based on the first scheduled PUSCCH partially overlapping with the second scheduled PUSCH. The mode component 945 can determine a PTRS transmission mode set based on the received RRC configuration message. In some examples, rate matching of one or more resources associated with PTRS transmission is based on at least one PTRS transmission mode in the PTRS transmission mode set. The mode component 945 can select at least one PTRS transmission mode in the PTRS transmission mode set based on an indication in the received DCI message. In some examples, rate matching of one or more resources associated with PTRS transmission is based on a selected PTRS transmission mode in the PTRS transmission mode set.

[0106] The port component 950 can determine one or more antenna ports associated with the PTRS transmission based on an indication in a received DCI message. In some examples, rate matching one or more resources associated with the PTRS transmission is based on one or more antenna ports associated with the PTRS transmission. The power component 955 can power boost the PTRS transmission scheduled on the PUSCH based on rate matching one or more resources associated with the PTRS transmission.

[0107] Fig.10 A diagram of a system including a device 1005 that supports PTRS alignment for a physical uplink shared channel according to aspects of the present disclosure is shown. The device 1005 may be an example of a device 705, a device 805, or a UE 115 as described herein, or include a component of the device 705, the device 805, or the UE 115. The device 1005 may include components for two-way voice and data communications, including components for sending communications and components for receiving communications, including a UE communication manager 1010, an I / O controller 1015, a transceiver 1020, an antenna 1025, a memory 1030, and a processor 1040. These components may be in electrical communication via one or more buses (e.g., a bus 1045).

[0108] The UE communication manager 1010 may determine that one or more resource elements associated with a PTRS transmission on a first scheduled PUSCH and one or more resource elements associated with a data transmission on a second scheduled PUSCH are multiplexed, and based on the determination, puncture the one or more resource elements associated with the data transmission on the second scheduled PUSCH. The UE communication manager 1010 may send a PTRS transmission on the first scheduled PUSCH based on the puncturing of the one or more resource elements associated with the data transmission on the second scheduled PUSCH. At least one implementation may enable the UE communication manager 1010 to puncture the one or more resource elements associated with the data transmission on the second scheduled PUSCH. If the one or more resource elements associated with the PTRS transmission on the first scheduled PUSCH and the one or more resource elements associated with the data transmission on the second scheduled PUSCH are multiplexed or overlapping, the punctured resource elements may serve as interference mitigation for the device 1005. Based on implementing puncturing as described herein, one or more processors of device 1005 (e.g., a processor controlling UE communication manager 1010 or merged with UE communication manager 1010) can experience reduced power consumption and facilitate high reliability and low latency wireless communications (e.g., reference signal transmissions), among other advantages.

[0109] The UE communication manager 1010 may also determine one or more resources associated with a PTRS transmission on a scheduled PUSCH, receive an indication of rate matching the one or more resources associated with the PTRS transmission, rate match the one or more resources associated with the PTRS transmission around one or more additional resources based on the indication, and send the PTRS transmission on the scheduled PUSCH based on the rate matching. At least one implementation may enable the UE communication manager 1010 to rate match the one or more resources associated with the PTRS transmission around the one or more additional resources. If one or more resource elements associated with the PTRS transmission on the first scheduled PUSCH and one or more resource elements associated with the data transmission on the second scheduled PUSCH are multiplexed or overlapped, the rate-matched resource elements may serve as interference mitigation for the device 1005. Based on implementing rate matching as described herein, one or more processors of the device 1005 (e.g., a processor controlling the UE communication manager 1010 or merged with the UE communication manager 1010) may experience reduced power consumption and facilitate high reliability and low latency wireless communications (e.g., reference signal transmission), among other advantages.

[0110] I / O controller 1015 can manage input and output signals for device 1005. I / O controller 1015 can also manage peripheral devices that are not integrated into device 1005. I / O controller 1015 can represent physical connections or ports for external peripheral devices. In some examples, I / O controller 1015 can utilize operating systems, such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX® or another known operating system. In other examples, I / O controller 1015 can represent modems, keyboards, mice, touch screens or similar devices, or interact with these devices. In some examples, I / O controller 1015 can be implemented as a part of a processor. In some examples, a user can interact with device 1005 via I / O controller 1015 or via hardware components controlled by I / O controller 1015.

[0111] The transceiver 1020 can communicate bidirectionally via one or more antennas, wired links, or wireless links, as described above. For example, the transceiver 1020 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 1020 can also include a modem for modulating packets and providing the modulated packets to an antenna for transmission, and demodulating packets received from the antenna. In some examples, the device 1005 can include a single antenna 1025. However, in some examples, the device 1005 can have more than one antenna 1025 that can simultaneously send or receive multiple wireless transmissions.

[0112] Memory 1030 may include RAM and ROM. Memory 1030 may store computer-readable, computer-executable code 1035 including instructions that, when executed, cause processor 1040 to perform various functions described herein. In some examples, memory 1030 may include, among other things, BIOS, which may control basic hardware or software operations (e.g., interactions with peripheral components or devices). Code 1035 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. Code 1035 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some examples, code 1035 may not be directly executable by processor 1040, but causes a computer (e.g., when compiled and executed) to perform the functions described herein.

[0113] Processor 1040 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a separate gate or transistor logic component, a separate hardware component). In some examples, processor 1040 may be configured to operate a memory array using a memory controller. In other examples, the memory controller may be integrated into processor 1040. Processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1030) to cause device 1005 to perform various functions (e.g., functions or tasks that support PTRS alignment for a physical shared channel).

[0114] Fig.11 A block diagram 1100 of a device 1105 supporting PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The device 1105 may be an example of aspects of a base station 105 as described herein. The device 1105 may include a receiver 1110, a base station communication manager 1115, and a transmitter 1120. The base station communication manager 1115 may be implemented at least in part by one or both of a modem and a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0115] The receiver 1110 may receive information, such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to PTRS alignment for physical shared channels, etc.). The information may be transmitted to other components of the device 1105. The receiver 1110 may be a reference Fig.14 Examples of various aspects of the described transceiver 1420. The receiver 1110 may utilize a single antenna or a group of antennas.

[0116] The base station communication manager 1115 can send a message to the UE, the message including an indication of the following: based on the fact that one or more resource elements associated with the PTRS transmission on the first scheduled PUSCH and one or more resource elements associated with the data transmission on the second scheduled PUSCH are multiplexed, one or more resource elements associated with the data transmission on the second scheduled PUSCH are punctured; and based on sending the message and the UE puncturing one or more resource elements associated with the data transmission on the second scheduled PUSCH, a PTRS transmission is received on the first scheduled PUSCH.

[0117] The base station communication manager 1115 may also send a message to the UE, the message including an indication of: rate matching one or more resources associated with the PTRS transmission on the scheduled PUSCH around one or more additional resources; and receiving the PTRS transmission on the scheduled PUSCH based on sending the message and the UE rate matching one or more resources associated with the PTRS transmission around one or more additional resources.

[0118] The transmitter 1120 may transmit signals generated by other components of the device 1105. In some examples, the transmitter 1120 may be co-located with the receiver 1110 in a transceiver component. For example, the transmitter 1120 may be a reference Fig.14 Examples of various aspects of the described transceiver 1420. The transmitter 1120 may utilize a single antenna or a group of antennas.

[0119] Fig.12 A block diagram of a device 1205 supporting PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The device 1205 may be an example of aspects of the device 1105 or base station 105 as described herein. The device 1205 may include a receiver 1210, a base station communication manager 1215, and a transmitter 1230. The base station communication manager 1215 may be implemented at least in part by one or both of a modem and a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0120] The receiver 1210 may receive information, such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to PTRS alignment for physical shared channels, etc.). The information may be transmitted to other components of the device 1205. The receiver 1210 may be a reference Fig.14 Examples of various aspects of the described transceiver 1420. The receiver 1210 may utilize a single antenna or a group of antennas.

[0121] The base station communications manager 1215 may be an example of aspects of the base station communications manager 1115 as described herein. The base station communications manager 1215 may include a message component 1220 and a reference signal component 1225.

[0122] The message component 1220 may send a message to the UE, the message including an indication of: based on one or more resource elements associated with the PTRS transmission on the first scheduled PUSCH and one or more resource elements associated with the data transmission on the second scheduled PUSCH being multiplexed, puncturing one or more resource elements associated with the data transmission on the second scheduled PUSCH. The reference signal component 1225 may receive the PTRS transmission on the first scheduled PUSCH based on sending the message and the UE puncturing one or more resource elements associated with the data transmission on the second scheduled PUSCH.

[0123] The message component 1220 can send a message to the UE, the message including an indication of the following: rate matching one or more resources associated with the PTRS transmission on the scheduled PUSCH around the one or more additional resources. The reference signal component 1225 can receive the PTRS transmission on the scheduled PUSCH based on sending the message and the UE rate matching one or more resources associated with the PTRS transmission around the one or more additional resources.

[0124] The transmitter 1230 may transmit signals generated by other components of the device 1205. In some examples, the transmitter 1230 may be co-located with the receiver 1210 in a transceiver component. For example, the transmitter 1230 may be a reference Fig.14 Examples of various aspects of the described transceiver 1420. The transmitter 1230 may utilize a single antenna or a group of antennas.

[0125] Fig.13 A block diagram of a base station communication manager 1305 supporting PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The base station communication manager 1305 may include a message component 1310, a reference signal component 1315, and a resource component 1320. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0126] The message component 1310 may send a message to the UE, the message including an indication of the following: based on the one or more resource elements associated with the PTRS transmission on the first scheduled PUSCH and the one or more resource elements associated with the data transmission on the second scheduled PUSCH being multiplexed, puncturing one or more resource elements associated with the data transmission on the second scheduled PUSCH. In some examples, the message component 1310 may send an RRC configuration message, the RRC configuration message including an indication of puncturing one or more resource elements associated with the data transmission on the second scheduled PUSCH. In some other examples, the message component 1310 may send a DCI message, the DCI message including an indication of puncturing one or more resource elements associated with the data transmission on the second scheduled PUSCH. In some examples, the message component 1310 may receive UE capability information, the UE capability information including an indication of the UE capability to puncture one or more resource elements associated with the data transmission on the second scheduled PUSCH, wherein the sending of the message is based on the received UE capability information.

[0127] The message component 1310 may send a message to the UE, the message including an indication of rate matching one or more resources associated with a PTRS transmission on a scheduled PUSCH around one or more additional resources. In some examples, the message component 1310 may send an RRC configuration message including an indication of rate matching one or more resource elements associated with the PTRS transmission. In some examples, the message component 1310 may send a DCI message including an indication of rate matching one or more resource elements associated with the PTRS transmission. In some examples, the RRC configuration message sent includes a PTRS transmission mode set. In some examples, the RRC configuration message sent includes a PTRS transmission mode set. In some examples, the indication includes a rate matching indicator, a zero power reference signal indicator, or a reference signal port indicator.

[0128] The reference signal component 1315 may receive a PTRS transmission on a first scheduled PUSCH based on the transmitted message and the UE puncturing one or more resource elements associated with the data transmission on the second scheduled PUSCH. In some examples, the reference signal component 1315 may receive a PTRS transmission on a scheduled PUSCH based on the transmitted message and the UE rate matching one or more resources associated with the PTRS transmission around one or more additional resources. In some examples, at least one PTRS transmission mode in the PTRS transmission mode set includes a PTRS transmission density, an offset of one or more resources associated with the PTRS transmission, or a location of one or more resources associated with the PTRS transmission. The resource component 1320 may allocate one or more resources including resource elements, resource blocks, symbols, or time slots.

[0129] Fig.14 A diagram of a system including a device 1405 that supports PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The device 1405 may be an example of a device 1105, a device 1205, or a base station 105 as described herein, or include components of the device 1105, the device 1205, or a base station 105. The device 1405 may include components for two-way voice and data communications, including components for sending communications and components for receiving communications, including a base station communication manager 1410, a network communication manager 1415, a transceiver 1420, an antenna 1425, a memory 1430, a processor 1440, and an inter-station communication manager 1445. These components may be in electrical communication via one or more buses (e.g., a bus 1450).

[0130] The base station communication manager 1410 may send a message to the UE, the message including an indication of: based on the one or more resource elements associated with the PTRS transmission on the first scheduled PUSCH and the one or more resource elements associated with the data transmission on the second scheduled PUSCH being multiplexed, puncturing one or more resource elements associated with the data transmission on the second scheduled PUSCH. The base station communication manager 1410 may receive the PTRS transmission on the first scheduled PUSCH based on the sending of the message and the UE puncturing the one or more resource elements associated with the data transmission on the second scheduled PUSCH. The base station communication manager 1410 may also send a message to the UE, the message including an indication of: rate matching one or more resources associated with the PTRS transmission on the scheduled PUSCH around one or more additional resources. The base station communication manager 1410 may also receive the PTRS transmission on the scheduled PUSCH based on the sending of the message and the UE rate matching one or more resources associated with the PTRS transmission around one or more additional resources.

[0131] The network communications manager 1415 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1415 may manage the transmission of data communications for client devices (eg, one or more UEs 115).

[0132] The transceiver 1420 can communicate bidirectionally via one or more antennas, wired links, or wireless links, as described above. For example, the transceiver 1420 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 1420 can also include a modem for modulating packets and providing the modulated packets to an antenna for transmission, and demodulating packets received from the antenna. In some examples, the device 1405 can have more than one antenna 1425 that can simultaneously send or receive multiple wireless transmissions.

[0133] Memory 1430 may include RAM, ROM, or a combination thereof. Memory 1430 may store computer-readable code 1435 including instructions that, when executed by a processor (e.g., processor 1440), cause the device to perform various functions described herein. In some examples, in addition, memory 1430 may include BIOS, which may control basic hardware or software operations (e.g., interactions with peripheral components or devices). Code 1435 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. Code 1435 may be stored in a non-temporary computer-readable medium, such as system memory or other types of memory. In some examples, code 1435 may not be directly executable by processor 1440, but causes a computer (e.g., when compiled and executed) to perform the functions described herein.

[0134] Processor 1440 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a separate gate or transistor logic component, a separate hardware component, or any combination thereof). In some examples, processor 1440 may be configured to operate a memory array using a memory controller. In some examples, the memory controller may be integrated into processor 1440. Processor 1440 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1430) to cause device 1405 to perform various functions (e.g., functions or tasks that support PTRS alignment for a physical shared channel).

[0135] The inter-station communication manager 1445 may manage communications with other base stations 105 and may include a controller or scheduler for controlling communications with UE 115 in cooperation with other base stations 105. For example, the inter-station communication manager 1445 may coordinate scheduling of transmissions to UE 115 to implement various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-station communication manager 1445 may provide an X2 interface in an LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0136] Fig.15 A flow chart illustrating a method 1500 for supporting PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 1500 may be implemented by a UE 115 or a component thereof as described herein. Figure 7-10The UE communication manager described herein may be used to perform. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0137] At 1505, the UE may determine that one or more resource elements associated with a PTRS transmission on a first scheduled PUSCH and one or more resource elements associated with a data transmission on a second scheduled PUSCH are multiplexed. The operations of 1505 may be performed according to methods as described herein. In some examples, aspects of the operations of 1505 may be performed as described with reference to Figure 7-10 The resource components described are executed.

[0138] At 1510, the UE may puncture one or more resource elements associated with data transmission on the second scheduled PUSCH based on the determination. The operations of 1510 may be performed according to methods as described herein. In some examples, aspects of the operations of 1510 may be performed as described with reference to Figure 7-10 The punching assembly described is performed.

[0139] At 1515, the UE may send a PTRS transmission on the first scheduled PUSCH based on puncturing one or more resource elements associated with data transmission on the second scheduled PUSCH. The operations of 1515 may be performed according to methods as described herein. In some examples, aspects of the operations of 1515 may be performed as described with reference to Figure 7-10 The described reference signal components are implemented.

[0140] Fig.16 A flow chart illustrating a method 1600 for supporting PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 1600 may be implemented by a base station 105 or components thereof as described herein. Figure 11-14 The base station may be executed by the base station communication manager described in the foregoing. In some examples, the base station may execute an instruction set to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0141] At 1605, the base station may send a message to the UE, the message including an indication of: based on one or more resource elements associated with the PTRS transmission on the first scheduled PUSCH and one or more resource elements associated with the data transmission on the second scheduled PUSCH being multiplexed, puncturing one or more resource elements associated with the data transmission on the second scheduled PUSCH. The operations of 1605 may be performed according to methods as described herein. In some examples, aspects of the operations of 1605 may be performed as described with reference to Figure 11-14 The described message components are executed.

[0142] At 1610, the base station may receive a PTRS transmission on the first scheduled PUSCH based on the transmitted message and the UE puncturing one or more resource elements associated with the data transmission on the second scheduled PUSCH. The operations of 1610 may be performed according to methods as described herein. In some examples, aspects of the operations of 1610 may be performed as described with reference to Figure 11-14 The described reference signal components are performed.

[0143] Fig.17 A flow chart illustrating a method 1700 for supporting PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 1700 may be implemented by a UE 115 or a component thereof as described herein. Figure 7-10 The UE communication manager described herein may be used to perform the functions described below. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described below.

[0144] At 1705, the UE may determine one or more resources associated with a scheduled PTRS transmission on a PUSCH. The operations of 1705 may be performed according to methods as described herein. In some examples, aspects of the operations of 1705 may be performed as described with reference to Figure 7-10 The resource components described are executed.

[0145] At 1710, the UE may receive an indication to rate match one or more resources associated with a PTRS transmission. The operations of 1710 may be performed according to methods as described herein. In some examples, aspects of the operations of 1710 may be performed as described with reference to Figure 7-10 The described message components are executed.

[0146] At 1715, the UE may rate match one or more resources associated with the PTRS transmission around the one or more additional resources based on the indication. The operations of 1715 may be performed according to methods as described herein. In some examples, aspects of the operations of 1715 may be performed as described with reference to Figure 7-10 The described rate components are performed.

[0147] At 1720, the UE may send a PTRS transmission on the scheduled PUSCH based on rate matching. The operations of 1720 may be performed according to methods as described herein. In some examples, aspects of the operations of 1720 may be as described with reference to Figure 7-10 The described reference signal components are performed.

[0148] Fig.18 A flow chart illustrating a method 1800 for supporting PTRS alignment for a physical shared channel according to aspects of the present disclosure is shown. The operations of the method 1800 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 1800 may be implemented by a base station 105 or components thereof as described herein. Figure 11-14 The base station may be executed by the base station communication manager described in the foregoing. In some examples, the base station may execute an instruction set to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0149] At 1805, the base station may send a message to the UE, the message including an indication to rate match one or more resources associated with the PTRS transmission on the scheduled PUSCH around one or more additional resources. The operations of 1805 may be performed according to methods as described herein. In some examples, aspects of the operations of 1805 may be performed as described with reference to Figure 11-14 The described message components are executed.

[0150] At 1810, the base station may receive the PTRS transmission on the scheduled PUSCH based on the transmitted message and the UE rate matching one or more resources associated with the PTRS transmission around the one or more additional resources. The operations of 1810 may be performed according to methods as described herein. In some examples, aspects of the operations of 1810 may be performed as described with reference to Figure 11-14 The described reference signal components are performed.

[0151] It should be noted that the methods described herein describe possible implementations, and operations and steps may be rearranged or modified, and other implementations are possible. In addition, aspects of two or more of these methods may be combined.

[0152] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein may be applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0153] The information and signals described herein may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, or optical fields or particles.

[0154] A general purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components designed to perform the functions described herein may be used to implement or perform the various illustrative blocks and components described in conjunction with the disclosure herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any processor, controller, microcontroller or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such structure).

[0155] The functions described herein may be implemented in hardware, software executed by a processor, or firmware. When implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on a computer-readable medium or transmitted via a computer-readable medium. Other examples and implementations are within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these items. The features that implement the functions may also be physically distributed in different locations, including being distributed so that parts of the functions are implemented at different physical locations.

[0156] Computer-readable media include both non-transitory computer storage media and communication media, and communication media include any media that promotes the transmission of computer programs from one place to another. Non-transitory storage media can be any available media that can be accessed by general or special-purpose computers. By way of example and not limitation, non-transitory computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other non-transitory media that can be used to carry or store desired program code units in the form of instructions or data structures and can be accessed by general or special-purpose computers, or general or special-purpose processors. In addition, any connection is appropriately referred to as a computer-readable medium. For example, if the software is transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwaves, then the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwaves are included in the definition of computer-readable media. As used herein, disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0157] As used herein (including in the claims), "or" as used in a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (e.g., A and B and C). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0158] In the accompanying drawings, similar components or features may have the same reference number. In addition, individual components of the same type may be distinguished by following the reference number with a dash and a second reference number that distinguishes the similar components. If only the first reference number is used in the specification, the description is applicable to any of the similar components having the same first reference number, regardless of the second or other subsequent reference numbers.

[0159] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration" and does not mean "preferred" or "more advantageous" than other examples. For the purpose of providing an understanding of the described techniques, the specific embodiments include specific details. However, these techniques may be implemented without these specific details. In some instances, in order to avoid obscuring the concepts of the described examples, well-known structures and devices are shown in block diagram form.

[0160] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure are apparent to those skilled in the art, and the general principles defined herein may be applicable to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the examples and designs described herein, but to be given the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment (UE), comprising: receiving a message from an access point, the message including an indication of: puncturing one or more resource elements for data transmission on a second scheduled physical uplink shared channel based at least in part on one or more resource elements for phase tracking reference signal transmission on a first scheduled physical uplink shared channel that overlap with one or more resource elements for data transmission on a second scheduled physical uplink shared channel; determining, based on the received message, that one or more resource elements used for the phase tracking reference signal transmission on the first scheduled physical uplink shared channel overlap with one or more resource elements used for the data transmission on the second scheduled physical uplink shared channel; Based at least in part on the determination, puncturing one or more resource elements for the data transmission on the second scheduled physical uplink shared channel; as well as The phase tracking reference signal transmission is sent on the first scheduled physical uplink shared channel based at least in part on puncturing one or more resource elements used for the data transmission on the second scheduled physical uplink shared channel.

2. The method according to claim 1, wherein: The message is a Radio Resource Control (RRC) configuration message or a Downlink Control Information (DCI) message.

3. The method according to claim 1 or 2, further comprising: determining a UE capability to puncture one or more resource elements for the data transmission on the second scheduled physical uplink shared channel; as well as Sending UE capability information, the UE capability information comprising an indication of the UE capability to puncture one or more resource elements for the data transmission on the second scheduled physical uplink shared channel, wherein the puncturing of the one or more resource elements for the data transmission on the second scheduled physical uplink shared channel is based at least in part on the sent UE capability information.

4. The method according to claim 1 or 2, further comprising: determining a phase tracking reference signal density for the first scheduled physical uplink shared channel in the time domain or the frequency domain or both; as well as Determining that the phase tracking reference signal density for the first scheduled physical uplink shared channel satisfies a threshold, wherein puncturing one or more resource elements for the data transmission on the second scheduled physical uplink shared channel is at least partially based on determining that the phase tracking reference signal density for the first scheduled physical uplink shared channel satisfies the threshold.

5. The method according to claim 4, further comprising: Determine that the phase tracking reference signal density in the time domain or the frequency domain or both is greater than or less than the threshold, wherein puncturing one or more resource elements for the data transmission on the second scheduled physical uplink shared channel is at least partially based on determining that the phase tracking reference signal density in the time domain or the frequency domain or both is greater than or less than the threshold.

6. The method according to claim 5, further comprising: Determining that the first scheduled physical uplink shared channel partially overlaps with the second scheduled physical uplink shared channel, wherein puncturing one or more resource elements used for the data transmission on the second scheduled physical uplink shared channel is at least partially based on the first scheduled physical uplink shared channel partially overlapping with the second scheduled physical uplink shared channel.

7. A method for wireless communication at an access point, comprising: sending a message to a user equipment (UE), the message comprising an indication of: puncturing one or more resource elements for data transmission on a first scheduled physical uplink shared channel based at least in part on one or more resource elements for phase tracking reference signal transmission on a first scheduled physical uplink shared channel overlapping with one or more resource elements for data transmission on a second scheduled physical uplink shared channel; as well as The phase tracking reference signal transmission is received on the first scheduled physical uplink shared channel based at least in part on sending the message and the UE puncturing one or more resource elements used for the data transmission on the second scheduled physical uplink shared channel in response to receiving the sent message.

8. The method according to claim 7, wherein: Sending the message includes: sending one or both of a radio resource control (RRC) configuration message or a downlink control information (DCI) message, wherein the radio resource control configuration message or the downlink control information message includes an indication of puncturing one or more resource elements used for the data transmission on the second scheduled physical uplink shared channel.

9. The method according to claim 7 or 8, further comprising: Receive UE capability information, the UE capability information comprising an indication of UE capability to puncture one or more resource elements for the data transmission on the second scheduled physical uplink shared channel, wherein sending the message is based at least in part on the received UE capability information.

10. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: processor, a memory coupled to the processor; as well as Instructions, which are stored in the memory and can be executed by the processor to cause the device to perform the following operations: receiving a message from an access point, the message including an indication of: puncturing one or more resource elements for data transmission on a second scheduled physical uplink shared channel based at least in part on one or more resource elements for phase tracking reference signal transmission on a first scheduled physical uplink shared channel that overlap with one or more resource elements for data transmission on the second scheduled physical uplink shared channel; determining, based on the received message, that one or more resource elements used for the phase tracking reference signal transmission on the first scheduled physical uplink shared channel overlap with one or more resource elements used for the data transmission on the second scheduled physical uplink shared channel; Based at least in part on the determination, puncturing one or more resource elements for the data transmission on the second scheduled physical uplink shared channel; as well as The phase tracking reference signal transmission is sent on the first scheduled physical uplink shared channel based at least in part on puncturing one or more resource elements used for the data transmission on the second scheduled physical uplink shared channel.

11. The device according to claim 10, wherein: The message is a Radio Resource Control (RRC) configuration message or a Downlink Control Information (DCI) message.

12. The device according to claim 10 or 11, wherein: The instructions may also be executed by the processor to cause the device to perform the following operations: determining a UE capability to puncture one or more resource elements for the data transmission on the second scheduled physical uplink shared channel; as well as Sending UE capability information, the UE capability information comprising an indication of the UE capability to puncture one or more resource elements for the data transmission on the second scheduled physical uplink shared channel, wherein the puncturing of the one or more resource elements for the data transmission on the second scheduled physical uplink shared channel is based at least in part on the sent UE capability information.

13. The device according to claim 10 or 11, wherein: The instructions may also be executed by the processor to cause the device to perform the following operations: determining a phase tracking reference signal density for the first scheduled physical uplink shared channel; and Determining that the phase tracking reference signal density for the first scheduled physical uplink shared channel satisfies a threshold, wherein puncturing one or more resource elements for the data transmission on the second scheduled physical uplink shared channel is at least partially based on determining that the phase tracking reference signal density for the first scheduled physical uplink shared channel satisfies the threshold.

14. The device according to claim 13, wherein: The instructions to determine the phase tracking reference signal density are executable by the processor to cause the device to perform the following operations: determine the phase tracking reference signal density for the first scheduled physical uplink shared channel in the time domain or the frequency domain or both.

15. The device according to claim 14, wherein: The instructions may also be executed by the processor to cause the device to perform the following operations: determine that the phase tracking reference signal density in the time domain or the frequency domain or both is greater than the threshold, wherein puncturing one or more resource elements used for the data transmission on the second scheduled physical uplink shared channel is at least partially based on determining that the phase tracking reference signal density in the time domain or the frequency domain or both is greater than the threshold.

16. The device according to claim 14, wherein: The instructions may also be executed by the processor to cause the device to perform the following operations: determine that the phase tracking reference signal density in the time domain or the frequency domain or both is less than the threshold, wherein puncturing one or more resource elements used for the data transmission on the second scheduled physical uplink shared channel is at least partially based on determining that the phase tracking reference signal density in the time domain or the frequency domain or both is less than the threshold.

17. The device according to claim 16, wherein: The instructions may also be executed by the processor to cause the device to perform the following operations: determine that the first scheduled physical uplink shared channel partially overlaps with the second scheduled physical uplink shared channel, wherein puncturing one or more resource elements used for the data transmission on the second scheduled physical uplink shared channel is at least partially based on the fact that the first scheduled physical uplink shared channel partially overlaps with the second scheduled physical uplink shared channel.

18. An apparatus for wireless communication at an access point, the apparatus comprising: processor, a memory coupled to the processor; as well as Instructions, which are stored in the memory and can be executed by the processor to cause the device to perform the following operations: sending a message to a user equipment (UE), the message comprising an indication of: puncturing one or more resource elements for data transmission on a first scheduled physical uplink shared channel based at least in part on one or more resource elements for phase tracking reference signal transmission on a first scheduled physical uplink shared channel overlapping with one or more resource elements for data transmission on a second scheduled physical uplink shared channel; as well as The phase tracking reference signal transmission is received on the first scheduled physical uplink shared channel based at least in part on sending the message and the UE puncturing one or more resource elements used for the data transmission on the second scheduled physical uplink shared channel in response to receiving the sent message.

19. The device according to claim 18, wherein: The instructions for sending the message may be executed by the processor to cause the device to perform the following operations: Sending one or both of a radio resource control (RRC) configuration message or a downlink control information (DCI) message, wherein the radio resource control (RRC) configuration message or the downlink control information (DCI) message includes an indication of puncturing one or more resource elements used for the data transmission on the second scheduled physical uplink shared channel.

20. The device according to claim 18 or 19, wherein: The instructions may also be executed by the processor to cause the device to perform the following operations: Receive UE capability information, the UE capability information comprising an indication of UE capability to puncture one or more resource elements for the data transmission on the second scheduled physical uplink shared channel, wherein sending the message is based at least in part on the received UE capability information.

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