Phase tracking reference signal for amplitude modulation

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user device may send a request for an amplitude modulated phase tracking reference signal for an uplink transmission or a downlink transmission; and communicate the uplink transmission or the downlink transmission based at least in part on the request. Many other aspects are also provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 63 / 027,053, filed on May 19, 2020, entitled “AMPLITUDE MODULATED PHASETRACKING REFERENCE SIGNALS,” and U.S. Non-Provisional Patent Application No. 17 / 243,213, filed on April 28, 2021, entitled “AMPLITUDE MODULATED PHASE TRACKING REFERENCE SIGNALS,” which are hereby expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications, and to techniques and apparatus for phase tracking reference signals for amplitude modulation. Background Art

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

[0005] A wireless communication network may include multiple base stations (BS) that may support communication of multiple user equipments (UEs). User equipments (UEs) may communicate with base stations (BSs) via downlinks and uplinks. Downlinks (or forward links) refer to communication links from BSs to UEs, and uplinks (or reverse links) refer to communication links from UEs to BSs. As will be described in more detail herein, BSs may be referred to as Node Bs, gNBs, access points (APs), radio heads, transmit receive points (TRPs), new radio (NR) BSs, 5G Node Bs, etc.

[0006] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user devices to communicate at municipal, national, regional, and even global levels. The new radio (NR), which may also be referred to as 5G, is a collection of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink (DL), using CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL) to better integrate with other open standards, and supporting beamforming, multiple input multiple output (MIMO) antenna technology, and carrier aggregation. However, as the demand for mobile broadband access continues to grow, there is a need for further improvements in LTE and NR technologies. Summary of the invention

[0007] In some aspects, a method of wireless communication performed by a UE may include: sending a request for an amplitude modulated phase tracking reference signal (PT-RS) for an uplink transmission or a downlink transmission; and communicating the uplink transmission or the downlink transmission based at least in part on the request.

[0008] In some aspects, a method of wireless communication performed by a UE may include: sending an indication of one or more of an uplink transmission or a downlink transmission capability of the UE to communicate with an amplitude modulated PT-RS; and communicating the uplink transmission or the downlink transmission based at least in part on the indication.

[0009] In some aspects, a method of wireless communication performed by a base station may include: receiving a request for an amplitude modulated PT-RS for an uplink transmission from a UE or a downlink transmission to the UE; and communicating the uplink transmission or the downlink transmission based at least in part on the request.

[0010] In some aspects, a method of wireless communication performed by a base station may include: receiving an indication of one or more of an uplink transmission or a downlink transmission capability of a UE to communicate with an amplitude modulated PT-RS; and communicating the uplink transmission or the downlink transmission based at least in part on the indication.

[0011] In some aspects, a UE for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: send a request for an amplitude modulated PT-RS for an uplink transmission or a downlink transmission; and communicate the uplink transmission or the downlink transmission based at least in part on the request.

[0012] In some aspects, a UE for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: send an indication of one or more of an uplink transmission or a downlink transmission capability of the UE to communicate with an amplitude modulated PT-RS; and communicate an uplink transmission or a downlink transmission based at least in part on the indication.

[0013] In some aspects, a base station for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: receive a request for an amplitude modulated PT-RS for an uplink transmission from a UE or a downlink transmission to a UE; and communicate the uplink transmission or the downlink transmission based at least in part on the request.

[0014] In some aspects, a base station for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: receive an indication of one or more of an uplink transmission or a downlink transmission capability of a UE to communicate with an amplitude modulated PT-RS; and communicate an uplink transmission or a downlink transmission based at least in part on the indication.

[0015] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a UE, the one or more instructions may cause the one or more processors to send a request for an amplitude modulated PT-RS for an uplink transmission or a downlink transmission; and communicate the uplink transmission or the downlink transmission based at least in part on the request.

[0016] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a UE, the one or more instructions may cause the one or more processors to send an indication of the ability of the UE to communicate one or more of an uplink transmission or a downlink transmission with an amplitude modulated PT-RS; and communicate an uplink transmission or a downlink transmission based at least in part on the indication.

[0017] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a base station, the one or more instructions may cause the one or more processors to receive a request for an amplitude modulated PT-RS for an uplink transmission from a UE or a downlink transmission to a UE; and communicate the uplink transmission or the downlink transmission based at least in part on the request.

[0018] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a base station, the one or more instructions may cause the one or more processors to receive an indication of one or more of an uplink transmission or a downlink transmission capability of a UE to communicate with an amplitude modulated PT-RS; and communicate an uplink transmission or a downlink transmission based at least in part on the indication.

[0019]

[0011] In some aspects, an apparatus for wireless communication may include means for sending a request for an amplitude modulated PT-RS for an uplink transmission or a downlink transmission; and means for communicating the uplink transmission or the downlink transmission based at least in part on the request.

[0020] In some aspects, an apparatus for wireless communication may include components for sending an indication of one or more of an uplink transmission or a downlink transmission capability of an amplitude modulated PT-RS for communication by the apparatus; and components for communicating the uplink transmission or the downlink transmission based at least in part on the indication.

[0021] In some aspects, an apparatus for wireless communication may include components for receiving a request for an amplitude modulated PT-RS for an uplink transmission from a UE or a downlink transmission to a UE; and components for communicating the uplink transmission or the downlink transmission based at least in part on the request.

[0022] In some aspects, an apparatus for wireless communication may include components for receiving an indication of one or more of an uplink transmission or a downlink transmission capability for communication of a UE with an amplitude modulated PT-RS; and components for communicating the uplink transmission or the downlink transmission based at least in part on the indication.

[0023] Aspects generally include methods, apparatuses, systems, computer program products, non-transitory computer-readable media, UEs, base stations, wireless communication devices, and / or processing systems as generally described herein with reference to and as illustrated in the drawings and description.

[0024] The foregoing has summarized the features and technical advantages of examples according to the present disclosure in a rather broad manner so that the following detailed description may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples are easily used as the basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent structures do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, including their organization and methods of operation and related advantages, will be better understood when the following description is considered in conjunction with the accompanying drawings. Each figure is provided for the purpose of illustration and description and is not intended to be a limitation on the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order that the above-mentioned features of the present disclosure may be understood in detail, a more particular description of the contents briefly summarized above may be obtained by reference to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of the present disclosure and therefore should not be considered as limiting the scope thereof, as the description may allow other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0026] Figure 1 is a diagram illustrating an example of a wireless communication network according to aspects of the present disclosure.

[0027] Figure 2 is a diagram illustrating an example of a base station communicating with a UE in a wireless communication network according to aspects of the present disclosure.

[0028] Figure 3 is a diagram illustrating an example phase tracking reference signal structure in a physical downlink shared channel according to aspects of the present disclosure.

[0029] Figure 4 is a diagram illustrating an example of an amplitude modulated phase tracking reference signal according to aspects of the present disclosure.

[0030] Figure 5 is a diagram illustrating an example of an amplitude modulated phase tracking reference signal according to aspects of the present disclosure.

[0031] Figure 6 is a diagram illustrating an example of an amplitude modulated phase tracking reference signal according to aspects of the present disclosure.

[0032] Figure 7 is a diagram illustrating an example of receiving a transmission of a phase tracking reference signal having amplitude modulation in accordance with aspects of the present disclosure.

[0033] Figure 8 is a diagram illustrating an example process performed, for example, by a user device according to aspects of the present disclosure.

[0034] Fig. 9 is a diagram illustrating an example process performed, for example, by a user device according to aspects of the present disclosure.

[0035] Fig.10 is a diagram illustrating an example process performed, for example, by a base station according to aspects of the present disclosure.

[0036] Fig.11 is a diagram illustrating an example process performed, for example, by a base station according to aspects of the present disclosure.

[0037] Fig.12 and Fig.13 is a block diagram of an example apparatus for wireless communications in accordance with aspects of the present disclosure. DETAILED DESCRIPTION

[0038] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be specifically implemented in many different forms, and should not be interpreted as being limited to any specific structure or function presented by the entire present disclosure. Instead, these aspects are provided so that the present disclosure will be exhaustive and complete, and the scope of the present disclosure will be fully conveyed to those skilled in the art. Based on the teachings herein, those skilled in the art will appreciate that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether implemented independently of any other aspect of the present disclosure or implemented in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method, which is practiced using other structures, functions, or structures and functions in addition to or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein may be embodied by one or more elements of the claims.

[0039] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, or algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0040] It should be noted that although various aspects may be described herein using terminology typically associated with 3G and / or 4G wireless technologies, aspects of the present disclosure may be applied to communication systems based on other generations, such as 5G and higher, including NR technology.

[0041] Figure 1is a diagram showing a wireless network 100 in which aspects of the present disclosure may be practiced. The wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network 100 may include a plurality of BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with a user equipment (UE) and may also be referred to as a base station, NR BS, Node B, gNB, 5G node B (NB), access point, transmit receive point (TRP), etc. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0042] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access to UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access to UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown, BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "node B", "5G NB", and "cell" may be used interchangeably herein.

[0043] In some aspects, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move according to the location of the mobile BS. In some aspects, the BSs may be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces (such as direct physical connections using any suitable transport network, virtual networks, etc.).

[0044] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and send data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that is capable of relaying transmissions for other UEs. Figure 1 In the example shown, a relay station 110d may communicate with the macro BS 110a and the UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay station may also be referred to as a relay BS, a relay base station, a relay, or the like.

[0045] The wireless network 100 may be a heterogeneous network including different types of BSs, such as macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0046] A network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly, for example, via a wireless or wired backhaul.

[0047] UE 120 (e.g., 120a, 120b, 120c) can be dispersed throughout the wireless network 100, and each UE can be stationary or mobile. UE can also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0048] Some UEs may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which may communicate with a base station, another device (e.g., a remote device), or some other entity. For example, a wireless node may provide connectivity to a network or to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as customer premises equipment (CPE). UE 120 may be included in a housing that houses components of UE 120, such as a processor component, a memory component, etc.

[0049] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific RAT and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0050] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary to communicate with each other) using one or more side link channels. For example, UE 120 may communicate using point-to-point (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocol (e.g., which may include vehicle-to-vehicle (V2V) protocol, vehicle-to-infrastructure (V2I) protocol, etc.), mesh network, etc. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations as performed by base station 110 described elsewhere herein.

[0051] As mentioned above, providing Figure 1 As an example. Other examples may differ from the Figure 1 The content described.

[0052] Figure 2 is a diagram of a design 200 of a base station 110 and a UE 120, which may be Figure 1 Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T≥1 and R≥1.

[0053] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for the UE based at least in part on the (multiple) MCS selected for each UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide T output symbol streams to T modulators (MOD) 232a to 232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t may be transmitted via T antennas 234a to 234t, respectively. According to various aspects described in more detail below, position coding may be used to generate synchronization signals to convey additional information.

[0054] At UE 120, antennas 252a to 252r may receive downlink signals from base station 110 and / or other base stations, and may provide received signals to demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of the UE 120 may be included in the housing 284.

[0055] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide decoded data to a data sink 239 and provide decoded control information to a controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0056] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component(s) of the base station 110 may perform one or more techniques associated with amplitude modulated PT-RS as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component(s) of may perform or direct e.g. Fig. 9 The process of 900 Fig.10 The process of 1000 Fig.11 Process 1100, Fig.12 The operations of the process 1200, and / or other processes as described herein. The memories 242 and 282 may store data and program codes for the base station 110 and the UE 120, respectively. In some aspects, the memory 242 and / or the memory 282 may include a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, when executed by one or more processors of the base station 110 and / or the UE 120, the one or more instructions may perform or direct, for example, Fig. 9 The process of 900 Fig.10 The process of 1000 Fig.11 Process 1100, Fig.12 The process 1200 of , and / or operations of other processes as described herein. The scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0057] In some aspects, the UE 120 may include means for sending a request for an amplitude modulated PT-RS for an uplink transmission or a downlink transmission; and means for communicating the uplink transmission or the downlink transmission based at least in part on the request, etc. In some aspects, the UE 120 may include means for sending an indication of the UE's ability to communicate one or more of an uplink transmission or a downlink transmission with an amplitude modulated PT-RS; and means for communicating the uplink transmission or the downlink transmission based at least in part on the indication, etc. In some aspects, such means may include combining Figure 2 One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, etc.

[0058] In some aspects, the base station 110 may include components for receiving a request for an amplitude modulated PT-RS for an uplink transmission from a UE or a downlink transmission to a UE; and components for communicating the uplink transmission or the downlink transmission based at least in part on the request, etc. In some aspects, the base station 110 may include components for receiving an indication of an ability to communicate one or more of an uplink transmission or a downlink transmission with an amplitude modulated PT-RS for the UE; and components for communicating the uplink transmission or the downlink transmission based at least in part on the indication, etc. In some aspects, such components may include a combination of Figure 2 One or more components of the base station 110 are depicted, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.

[0059] As mentioned above, providing Figure 2 As an example. Other examples may differ from the Figure 2 The content of the description.

[0060] Figure 3 is a diagram illustrating an example phase tracking reference signal (PT-RS) structure 300 in a physical downlink shared channel (PDSCH) in accordance with aspects of the present disclosure. As shown, the PDSCH may include a plurality of subchannels (e.g., 36 subchannels) and a plurality of symbols (e.g., 14 symbols).

[0061] The base station may use the PDSCH to transmit and the UE may receive (eg, or attempt to receive) PT-RS, a demodulation reference signal (DMRS), data, etc. Although described with reference to the PDSCH, the structure may be similarly applied to a physical uplink shared channel (PUSCH).

[0062] The PT-RS may be a pilot for the PDSCH and may have a frequency domain density (eg, relative to a subcarrier) and a time domain density (eg, relative to a symbol allocated for data). Figure 3 As shown, the PT-RS may have a time domain density of 1 / 2 and a frequency domain density of 1 / 24 (eg, 1 per resource block). The UE may receive the PT-RS via a single port (eg, port 1000) or multiple ports.

[0063] In some examples, the PT-RS may be allocated using 1 resource (e.g., resource element or subchannel) per 2 resource blocks, 1 resource per 4 resource blocks, etc. In some examples, the PT-RS may be allocated using 1 resource block resource element per 1 symbol, 1 resource block resource element per 2 symbols, 1 resource block resource element per 4 symbols, etc. The configuration of the PT-RS may be configured (e.g., using radio resource control (RRC) signaling) and / or may be based at least in part on an associated MCS of the PDSCH. The PT-RS may be defined by a Gold sequence.

[0064] As shown, the PDSCH may have a single-symbol DMRS of multiple (e.g., 2) DMRS types (e.g., DMRS type 2). For example, the PDSCH may have 1 DMRS symbol per resource block. The receiving device may use the DMRS to roughly estimate and / or correct the frequency error within the symbol including the DMRS.

[0065] The PDSCH or PUSCH may include a PT-RS for a receiving device (e.g., a UE, a base station, etc.) to consider residual frequency offset (e.g., a frequency offset occurring within a resource block or a time slot), phase noise (e.g., introduced by an oscillator at a transmitting device, a receiving device, etc.), a common phase error (e.g., a common phase rotation of subcarriers of the PDSCH, PUSCH, etc.), etc. For example, the receiving device may use the PT-RS to estimate and / or correct phase noise (e.g., based at least in part on a detected residual frequency offset, a common phase error (CPE), etc.).

[0066] However, using PT-RS in dedicated symbols in PDSCH can reduce the potential throughput of PDSCH, which dedicated symbols would otherwise be allocated to data (e.g., application data). In some examples, the dedicated symbols allocated for PT-RS can include 1 / 24 (approximately 4.16%) of the symbols in PDSCH. By allocating resources for PT-RS, the UE and / or base station can consume computing, communication, and / or network resources to schedule additional resources to compensate for the reduction in throughput caused by consuming resources for PT-RS.

[0067] As shown above, provide Figure 3 As an example. Other examples may differ from the Figure 3 The content described.

[0068] In some aspects described herein, a UE and a base station may communicate using an amplitude modulated PT-RS. In other words, a PDSCH or PUSCH may be sent with data multiplexed with a PT-RS sequence via amplitude modulation in resources allocated for PT-RS. In some aspects, a UE may send an indication of the ability to communicate using an amplitude modulated PT-RS (e.g., using resources that would otherwise have been dedicated to PT-RS without additional data). In some aspects, a base station may send an indication (e.g., in downlink control information (DCI), a configured grant, etc.) that one or more uplink transmissions or downlink transmissions are to communicate (e.g., transmit or receive) using an amplitude modulated PT-RS. In some aspects, a UE may send a request for one or more uplink transmissions or downlink transmissions for communicating with an amplitude modulated PT-RS. In some aspects, a base station may send a request for one or more uplink transmissions or downlink transmissions for communicating using an amplitude modulated PT-RS.

[0069] Based at least in part on the UE indicating the ability to communicate using an amplitude modulated PT-RS and / or the UE requesting to communicate using an amplitude modulated PT-RS, the base station and / or the UE can save computational, communication, and / or network resources that would otherwise have been used to schedule additional resources to compensate for using dedicated resources for the PT-RS. In some aspects, the throughput of the PDSCH or PUSCH can be improved by approximately 2%.

[0070] Figure 4 4 is a diagram illustrating an example 400 of an amplitude modulated PT-RS according to aspects of the present disclosure. Figure 4 As shown, a UE (e.g., UE 120) can communicate with a base station (e.g., base station 110). The UE and the base station can be part of a wireless network (e.g., wireless network 100).

[0071] As indicated by reference numeral 405, the base station may send and the UE may receive configuration information. In some aspects, the UE may receive the configuration information from another device (e.g., from another base station, another UE, etc.). In some aspects, the UE may receive the configuration information via one or more of RRC signaling, media access control (MAC) signaling (e.g., MAC control element (MAC CE)), etc. In some aspects, the configuration information may include an indication of one or more configuration parameters for selection by the UE (e.g., already known to the UE), explicit configuration information of the UE for configuring the UE, etc.

[0072] In some aspects, the configuration information may indicate that the UE is to provide an indication of the UE's ability to communicate using an amplitude modulated PT-RS (e.g., for PUSCH, PDSCH, etc.). In some aspects, the configuration information may indicate that the base station may communicate using an amplitude modulated PT-RS. For example, the base station may be configured to communicate using an amplitude modulated PT-RS based at least in part on receiving a request from the UE, based at least in part on a determination made by the base station that a dedicated PT-RS is unnecessary, etc.

[0073] In some aspects, the configuration information may indicate that the base station is to provide an indication of whether amplitude modulated PT-RS is enabled. In some aspects, the configuration information may indicate that the UE is to be configured to communicate using amplitude modulated PT-RS for a single transmission (e.g., uplink or downlink), a specified number of transmissions, a set of transmissions scheduled by a configured grant, transmissions within a specified time period, etc.

[0074] In some aspects, the configuration information may indicate the MCS of symbols used for amplitude modulated PT-RS. In some aspects, the configuration may indicate the difference in MCS of symbols used for amplitude modulated PT-RS and symbols used to send other data (e.g., in resources not configured for pilot). In some aspects, the configuration information may indicate the maximum MCS of symbols used for amplitude modulated PT-RS.

[0075] As indicated by reference numeral 410, the UE may configure the UE for communication with a base station. In some aspects, the UE may configure the UE based at least in part on the configuration information. In some aspects, the UE may be configured to perform one or more operations described herein.

[0076] As indicated by reference numeral 415, the UE may send, and the base station may receive, an indication of the UE's ability to communicate (e.g., one or more of an uplink transmission or a downlink transmission) using an amplitude modulated PT-RS. For example, based at least in part on the UE being configured to determine and correct at least a portion of a common phase error (CPE) using an amplitude modulated PT-RS, the UE may indicate the UE's ability to communicate using an amplitude modulated PT-RS. In some aspects, the UE may send the indication via RRC signaling, one or more MAC CEs, a physical uplink control channel (PUCCH) message, or the like.

[0077] As indicated by reference numeral 420, the UE may determine to use an amplitude modulated PT-RS for sending uplink transmissions and / or receiving downlink transmissions. In some aspects, the UE may determine to use an amplitude modulated PT-RS for communication based at least in part on one or more metrics, such as an amount of data buffered for uplink transmissions or downlink transmissions that satisfies a threshold, a size of a resource grant associated with one or more uplink transmissions or downlink transmissions (e.g., compared to the amount of data buffered for transmission), an RSRP associated with the UE that satisfies a threshold, a signal to interference plus noise ratio (SINR) that satisfies a threshold, etc. In some aspects, the UE may determine to use an amplitude modulated PT-RS for communication based at least in part on a current metric, a predicted metric, etc.

[0078] As indicated by reference numeral 425, the UE may send, and the base station may receive, a request to communicate using an amplitude modulated PT-RS. In some aspects, the UE may send the request via a PUSCH transmission. In some aspects, the request may include a single-bit indicator of whether the amplitude modulated PT-RS is requested for one transmission (uplink or downlink), a set of transmissions, etc.

[0079] For example, the UE may send a request to use an amplitude modulated PT-RS for one or more uplink transmissions or one or more downlink transmissions. In some aspects, the request may apply to a single subsequent downlink transmission or uplink transmission, a set of downlink transmissions or a set of uplink transmissions scheduled by a configured grant, a specified number of downlink transmissions or uplink transmissions, downlink transmissions or uplink transmissions within a specified time period, etc. In some aspects, the request may include an indication of the UE's ability to communicate using an amplitude modulated PT-RS. For example, the request may include an explicit indication of the UE's capabilities, may include an implicit indication of the UE's capabilities (e.g., the request may imply that the UE is able to communicate using an amplitude modulated PT-RS), etc.

[0080] As indicated by reference numeral 430, the UE may send, and the base station may receive, a requested MCS for an amplitude modulated PT-RS. For example, the UE may send a request for an MCS for symbols associated with an amplitude modulated PT-RS. In some aspects, the request may explicitly indicate the requested MCS, may indicate a requested difference between the MCS for symbols associated with the amplitude modulated PT-RS and the MCS for symbols associated with other data, etc. In some aspects, the UE may send a request for an MCS along with a request for an amplitude modulated PT-RS, along with an indication of the UE's ability to communicate using an amplitude modulated PT-RS, etc.

[0081] As indicated by reference numeral 435, the base station may determine whether to communicate using an amplitude modulated PT-RS. For example, the base station may determine whether to comply with a request from the UE to communicate using an amplitude modulated PT-RS, the base station may determine to communicate using an amplitude modulated PT-RS independent of a request from the UE, etc. In some aspects, the base station may determine to comply with or not comply with a request from the UE based at least in part on one or more metrics, such as an amount of buffered data for downlink transmissions, a size of a resource grant for an associated transmission (e.g., to which the request applies), an RSRP associated with the UE, movement of the UE, an MCS for upcoming communications, a predicted change in conditions for SINR, etc.

[0082] In some aspects, the base station may determine to communicate (e.g., uplink transmission or downlink transmission) with amplitude modulated PT-RS independent of a request from the UE based at least in part on one or more metrics, such as a network load associated with the base station, an amount of data buffered for uplink transmissions or downlink transmissions that satisfies a threshold, a size of a resource grant associated with one or more uplink transmissions or downlink transmissions (e.g., compared to the amount of data buffered for transmission), an RSRP associated with the UE that satisfies a threshold, an SINR that satisfies a threshold, the ability of the UE to communicate with amplitude modulated PT-RS, etc. In some aspects, the base station may determine whether to communicate using amplitude modulated PT-RS based at least in part on a current metric, a predicted metric, etc.

[0083] As indicated by reference numeral 440, the base station may send and the UE may receive an indication to communicate using an amplitude modulated PT-RS. For example, the indication may indicate that the base station has agreed to a request from the UE, that the base station has determined to communicate using an amplitude modulated PT-RS (e.g., independent of or without a request from the UE), etc. In some aspects, based at least in part on receiving an indication of the capabilities of the UE, the base station may send an indication that resources that would otherwise have been allocated for a dedicated PT-RS are to be allocated for an amplitude modulated PT-RS. In some aspects, the base station may provide the indication via a DCI message (e.g., using one or more bits), a MAC CE, RRC signaling, etc.

[0084] As indicated by reference numeral 445, the base station may transmit, and the UE may receive, an indication of the MCS for the amplitude modulated PT-RS. In other words, the base station may transmit an indication of the MCS for symbols associated with the amplitude modulated PT-RS.

[0085] In some aspects, the MCS may be based at least in part on feedback signaling associated with a previous communication (e.g., via an outer loop adaptive loop). For example, the UE may send an acknowledgment or negative acknowledgment (ACK / NACK) signaling for a downlink transmission from a base station for a previous transmission of a PT-RS with amplitude modulation. Based at least in part on receiving an ACK, the base station may indicate an increase in the MCS, no change in the MCS, no indication of the MCS (e.g., implying no change in the MCS), etc. Based at least in part on receiving a NACK, the base station may reduce the MCS, no change in the MCS, etc. In some aspects, the base station may indicate a change to the MCS using an explicit indication, a relative indication (e.g., an MCS relative to a previously transmitted MCS), etc.

[0086] Similarly, the base station may send ACK / NACK signaling for an uplink transmission from the UE for a previous transmission of a PT-RS with amplitude modulation. Based at least in part on the base station sending an ACK, the UE may request or the base station may indicate an increase in the MCS, no change in the MCS, no indication for the MCS (e.g., implying no change in the MCS), etc. Based at least in part on the base station sending a NACK, the UE may request or the base station may indicate a decrease in the MCS, no change in the MCS, etc. In some aspects, the UE may request or the base station may indicate a change to the MCS using an explicit indication, a relative indication (e.g., an MCS relative to a previously transmitted MCS), etc.

[0087] In some aspects, the base station may provide an indication of the MCS via a DCI message (e.g., using one or more bits), a MAC CE, etc. In some aspects, the base station may send an indication of the MCS in a single message (e.g., a DCI message, MAC layer signaling, etc.) using an indication of using an amplitude modulated PT-RS for communication. For example, a DCI message may include 2 or more bits to indicate that the amplitude modulated PT-RS is enabled and / or indicate the MCS. The indication of the MCS may explicitly indicate the MCS, may indicate the difference between the MCS for symbols associated with the amplitude modulated PT-RS and the MCS for symbols associated with other data, etc.

[0088] As shown by reference numeral 450, the UE and the base station may communicate using an amplitude modulated PT-RS. For example, the UE and the base station may communicate uplink transmissions and / or downlink transmissions using an amplitude modulated PT-RS. In some aspects, the amplitude modulated PT-RS may include a PT-RS sequence multiplexed with data via amplitude modulation. For example, the amplitude modulated PT-RS may include a PT-RS sequence indicated by a phase of the amplitude modulated PT-RS and data indicated by an amplitude of the amplitude modulated PT-RS. The data carried via the amplitude modulated PT-RS (e.g., on a tone allocated for the PT-RS) may be associated with a dedicated cyclic redundancy check and / or hybrid automatic repeat request (HARQ) feedback (e.g., a HARQ acknowledgment (ACK) or a HARQ negative acknowledgment (NACK)), etc.

[0089] In some aspects, a UE may communicate (e.g., send and / or receive) an uplink transmission or a downlink transmission based at least in part on an assumption that an uplink transmission or a downlink transmission with an amplitude modulated PT-RS is to be sent based at least in part on a request to send an amplitude modulated PT-RS. In other words, without receiving additional signaling for confirmation, the UE may assume that the base station will comply with the request to communicate using the amplitude modulated PT-RS.

[0090] In some aspects, data sent on resources associated with an amplitude modulated PT-RS may have a CRC that is different from one or more cyclic redundancy checks (CRCs) associated with other data for uplink or downlink transmissions. In some aspects, a receiving device (e.g., a UE for downlink transmissions or a base station for uplink transmissions) may decode the data associated with the amplitude modulated PT-RS using a convolutional code.

[0091] In some aspects, data sent on resources associated with an amplitude modulated PT-RS may be associated with a dedicated ACK / NACK bit that is different from one or more ACK / NACK bits associated with other data communicated via an uplink transmission or a downlink transmission. In some aspects, based at least in part on reporting a NACK for the amplitude modulated PT-RS, the base station may send, and the UE may receive (e.g., attempt to decode), a repetition of the amplitude modulated PT-RS via subsequent PT-RS resources.

[0092] As indicated by reference numeral 455, the UE may decode (e.g., demodulate, decode, receive, etc.) a downlink transmission with an amplitude modulated PT-RS and / or encode (e.g., modulate, encode, etc.) an uplink transmission with an amplitude modulated PT-RS. Although described with reference to a UE, a base station may similarly decode an uplink transmission with an amplitude modulated PT-RS and / or encode a downlink transmission with an amplitude modulated PT-RS.

[0093] In some aspects, the UE may determine that the downlink transmission has an amplitude modulated PT-RS based at least in part on an indication of communicating with an amplitude modulated PT-RS, a request to communicate with an amplitude modulated PT-RS, an indication of an ability to communicate with an amplitude modulated PT-RS, a determination that the PT-RS is amplitude modulated based at least in part on an amplitude variation of a resource associated with the downlink transmission's PT-RS, etc. In some aspects, the UE may estimate the CPE based at least in part on the amplitude modulated PT-RS. In some aspects, the UE may attempt (e.g., after estimating the CPE) to extract data from the amplitude modulated PT-RS.

[0094] In some aspects, based at least in part on the phase of the amplitude modulated PT-RS, the UE may remove a known PT-RS sequence from a portion of a downlink transmission received on resources allocated to the amplitude modulated PT-RS. Based at least in part on, for example, the DMRS, the UE may correct for channel effects for the portion of the downlink transmission. The UE may perform antenna combining and signal equalization for the portion of the downlink transmission and then perform soft metric extraction to extract data indicated by the amplitude of the amplitude modulated PT-RS.

[0095] In some aspects, the UE may remove a known PT-RS sequence from a portion of a downlink transmission based at least in part on a phase of an amplitude modulated PT-RS. Based at least in part on, for example, a DMRS, the UE may correct for channel effects for the portion of the downlink transmission. The UE may aggregate a portion of the downlink transmission received on resources allocated to the amplitude modulated PT-RS to represent an equivalent phasor and use the equivalent phasor to estimate a CPE for the downlink transmission.

[0096] In some aspects, the UE may decode data sent on resources associated with an amplitude modulated PT-RS. For example, the UE may decode the data based at least in part on an MCS configured for the amplitude modulated PT-RS, based at least in part on a difference between the MCS configured for the amplitude modulated PT-RS and an MCS of other data for an uplink transmission or a downlink transmission, and the like.

[0097] Based at least in part on the UE indicating an ability to communicate using amplitude modulated PT-RS and / or the UE requesting to communicate using amplitude modulated PT-RS, the base station and / or UE can save computational, communication, and / or network resources that would otherwise have been used to schedule additional resources to compensate for the use of dedicated resources for PT-RS.

[0098] As shown above, provide Figure 4 As an example. Other examples may differ from the Figure 4 The content described.

[0099] Figure 5 is a diagram illustrating an example 500 of an amplitude modulated PT-RS in accordance with aspects of the present disclosure.

[0100] like Figure 5 As shown in reference numeral 505, the PT-RS may be transmitted with a constant amplitude having four phase options. Based at least in part on the phase of the PT-RS (e.g., using a sequence of four phase options), the PT-RS with a constant amplitude may carry a Gold sequence. However, the PT-RS with a constant amplitude may only carry a Gold sequence and may be a dedicated PT-RS that does not carry additional data.

[0101] The PT-RS may be transmitted with a variable amplitude having four phase options, as indicated by reference numeral 510. In this manner, the PT-RS may carry a Gold sequence via the phase of the PT-RS and may carry additional data via the amplitude of the PT-RS.

[0102] In some aspects, the transmitting device (base station 110, UE 120, etc.) can modulate the amplitude of the PT-RS symbol to carry additional data. For example, the transmitting device can configure the PT-RS amplitude using an M-amplitude shift keying (M-ASK) constellation, which is based at least in part on the incoming data bits to be transmitted. Based at least in part on a predefined, known quadrature phase shift keying (QPSK) symbol sequence defined for PT-RS in a communication standard (e.g., at least in part based on the configuration of the network), the transmitting device can configure the phase of the PT-RS. In some aspects, the PT-RS can be transmitted using an amplitude phase shift keying (APSK) constellation with multiple loops (e.g., representing amplitudes) and four QPSK phase options on each loop.

[0103] A receiving device (e.g., UE 120, base station 110, etc.) can receive and process the PT-RS (e.g., now an amplitude modulated PT-RS). The receiving device can remove the known PT-RS sequence (e.g., by separating the phase of the PT-RS), and the DMRS can be used to estimate and / or correct the channel effect for each PT-RS symbol. For each symbol, the receiving device can aggregate the PT-RS to determine an equivalent phasor. Each phasor can represent a per-symbol CPE, which is based at least in part on, for example, phase noise. The phasor can be used to refine the per-symbol common channel phase estimate. The receiving device can use antenna combining and signal equalization to determine the combined and equalized signal amplitude. The receiving device can use the combined and equalized signal amplitude to perform soft metric extraction to extract data modulated on the amplitude of the PT-RS.

[0104] In this way, determination of an equivalent phasor and / or CPE can be determined based on applying amplitude modulation to the PT-RS with no, or only a minor, negative impact (e.g., based at least in part on the equivalent phasor on each symbol having an average amplitude defined by the average amplitude of the amplitude modulated PT-RS).

[0105] As shown above, provide Figure 5 As an example. Other examples may differ from the Figure 5 The content described.

[0106] Figure 6 is a diagram illustrating an example 600 of an amplitude modulated PT-RS in accordance with aspects of the present disclosure.

[0107] like Figure 6 As shown in Figure 605, a transmitting device (e.g., base station 110, UE 120, etc.) can receive data bits for transmission to a receiving device (e.g., UE 120, base station 110, etc.) via a PT-RS. Based at least in part on the MCS used for the PT-RS, the transmitting device can encode and interleave the data bits for transmission via resources (time symbol l and frequency k) allocated to the PT-RS. The transmitting device can perform M-ASK mapping to map the data bits to the amplitude of the PT-RS (e.g., for transmission as a signal with a constant phase (e.g., a phase of zero)). The transmitting device can perform phase mapping to apply a known pilot phase defined by a PT-RS sequence (e.g., as indicated in a communication standard) to the signal.

[0108] The transmitting device may perform OFDM mapping to map the signal and the additional data (e.g., a PDSCH stream) to OFDM symbols in the resources allocated for the transmission. Based at least in part on the MCS for the PT-RS and / or the MCS for the additional data, the transmitting device may apply OFDM modulation to modulate the PT-RS and the additional data for transmission to the receiving device.

[0109] As indicated by reference numeral 610, the receiving device may perform OFDM demodulation to demodulate the signal, based at least in part on, for example, the MCS for the PT-RS and / or the MCS for the additional data. The receiving device may perform OFDM demapping to demap the signal and separate the signal transmitted via the PT-RS symbol from the signal transmitted via the symbol of the additional data. The additional data (PDSCH stream) may be used to determine a DMRS-based channel estimate. The DMRS-based channel estimate may be used for PT-RS processing and / or amplitude demodulation of the PT-RS.

[0110] The receiving device can determine the phasor of each time signal (e.g., and each antenna within a time symbol), which can be used to determine the channel phase error. The receiving device can use the channel phase error to refine the channel estimate (e.g., DMRS-based channel estimate) for decoding additional data.

[0111] The receiving device may deinterleave and decode the signal (e.g., the signal sent via the PT-RS symbol and the signal sent via the symbol of the additional data). The receiving device may use the data bits (e.g., for an application of the receiver to generate another data packet for forwarding, etc.). The receiving device may perform a CRC check for the signal sent via the PT-RS symbol and another CRC check for the signal sent via the symbol of the additional data. The receiving device may send an ACK / NACK for the signal sent via the PT-RS symbol and an ACK / NACK for the signal sent via the symbol of the additional data.

[0112] As shown above, provide Figure 6 As an example. Other examples may differ from the Figure 6 The content described.

[0113] Figure 7 700 is a diagram illustrating an example of receiving a transmission utilizing an amplitude modulated PT-RS. In some aspects, amplitude modulated PT-RS processing may be performed by a receiving device (e.g., as Figure 6 shown).

[0114] like Figure 7As shown in the figure with reference mark 705, the receiving device can perform phase sequence removal on the PT-RS signal. Based at least in part on the channel estimation coefficient based on the DMRS, the receiving device can perform channel removal (e.g., channel correction) on the PT-RS signal. The receiving device can perform aggregation of PT-RS signals of one or more (e.g., all) PT-RS resources for each symbol (e.g., apply channel correction). The receiving device can average the aggregated PT-RS signals over one or more resource elements of a symbol to determine an equivalent phasor of the symbol. The receiving device can use an average of the aggregated PT-RS signals of multiple symbols to determine multiple equivalent phasors of PT-RS symbols of multiple symbols.

[0115] In this way, based at least in part on the data-modulated PT-RS, the receiving device can estimate phase noise, residual frequency offset, etc. Before demodulating and / or decoding additional data sent using the data-modulated PT-RS, the receiving device can use the estimated phase difference to determine phase noise and / or process residual frequency offset (e.g., between symbols).

[0116] As indicated by reference numeral 710, the receiving device may perform amplitude demodulation on the PT-RS signal. The receiving device may remove a known phase sequence from the amplitude modulated PT-RS signal. This may separate the amplitude component of the PT-RS signal. Based at least in part on the DMRS-based channel estimation coefficients, the receiving device may perform equalization and maximum ratio combining (MRC). The receiving device may determine the amplitude of the PT-RS signal (e.g., based at least in part on the magnitude of the signal). The receiving device may perform a log-likelihood ratio (LLR) calculation to determine the amplitude value of the PT-RS signal for deinterleaving and decoding.

[0117] As shown above, provide Figure 7 As an example. Other examples may differ from the Figure 7 The content described.

[0118] Figure 8 8 is a diagram illustrating an example process 800 performed, for example, by a UE, in accordance with aspects of the present disclosure. Example process 800 is an example of a UE (eg, UE 120, etc.) performing operations associated with amplitude modulated PT-RS.

[0119] like Figure 8 As shown, in some aspects, process 800 may include sending a request for an amplitude modulated PT-RS for an uplink transmission or a downlink transmission (block 810). For example, as described above, the UE (e.g., using transmit processor 264, controller / processor 280, memory 282, etc.) may send a request for an amplitude modulated PT-RS for an uplink transmission or a downlink transmission.

[0120] like Figure 8 As further shown, in some aspects, process 800 may include communicating an uplink transmission or a downlink transmission based at least in part on the request (block 820). For example, as described above, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may communicate an uplink transmission or a downlink transmission based at least in part on the request.

[0121] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0122] In the first aspect, the amplitude modulated PT-RS includes a PT-RS sequence indicated by a phase of the amplitude modulated PT-RS, and data indicated by an amplitude of the amplitude modulated PT-RS.

[0123] In a second aspect, either alone or in combination with the first aspect, communicating a downlink transmission includes receiving a downlink transmission, and receiving the downlink transmission includes removing a known PT-RS sequence from a portion of the downlink transmission received on resources allocated to the amplitude modulated PT-RS based at least in part on the phase of the amplitude modulated PT-RS; correcting channel effects for the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS; performing antenna combining and signal equalization for the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS, and performing soft metric extraction on the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS to extract data indicated by the amplitude of the amplitude modulated PT-RS.

[0124] In a third aspect, alone or in combination with one or more of the first and second aspects, correcting channel effects for the portion of the downlink transmission received on resources allocated to amplitude modulated PT-RS comprises correcting channel effects based at least in part on DMRS.

[0125] In a fourth aspect, alone or in combination with one or more of the first to third aspects, communicating a downlink transmission includes receiving a downlink transmission, and receiving the downlink transmission includes removing a known PT-RS sequence from a portion of the downlink transmission received on resources allocated to the amplitude modulated PT-RS based at least in part on the phase of the amplitude modulated PT-RS; correcting channel effects for the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS; aggregating the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS to represent an equivalent phasor; and using the equivalent phasor to estimate the CPE for the downlink transmission.

[0126] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, correcting channel effects for the portion of the downlink transmission received on resources allocated to amplitude modulated PT-RS includes correcting channel effects based at least in part on DMRS.

[0127] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, data sent on resources associated with an amplitude modulated PT-RS has a CRC that is different from one or more CRCs associated with other data transmitted in an uplink transmission or a downlink transmission.

[0128] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, data sent on resources associated with an amplitude modulated PT-RS is associated with a dedicated ACK / NACK bit that is different from one or more ACK / NACK bits associated with other data communicated via an uplink transmission or a downlink transmission.

[0129] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, process 800 includes reporting a NACK for an amplitude modulated PT-RS and receiving a repetition of the amplitude modulated PT-RS via a subsequent PT-RS resource.

[0130] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, process 800 includes sending a request for an MCS for symbols associated with an amplitude modulated PT-RS.

[0131] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, sending the request for the MCS includes sending the request for the MCS together with a request for an amplitude modulated PT-RS.

[0132] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, process 800 includes receiving an indication of an MCS for symbols associated with an amplitude modulated PT-RS.

[0133] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the indication of the MCS is based at least in part on feedback signaling associated with a previous downlink transmission of a PT-RS with amplitude modulation.

[0134] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, receiving an indication for the MCS comprises receiving an indication for the MCS via DCI, RRC signaling, or one or more MAC CEs.

[0135] In a fourteenth aspect, either alone or in combination with one or more of the first to thirteenth aspects, the indication of the MCS indicates the difference between the MCS for symbols associated with an amplitude modulated PT-RS and the MCS for symbols associated with other data for uplink transmission or downlink transmission.

[0136] In a fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, process 800 includes decoding data multiplexed with a PT-RS sequence on resources associated with an amplitude modulated PT-RS based at least in part on a configured MCS for the amplitude modulated PT-RS for downlink transmission, or a configured difference between the MCS for the amplitude modulated PT-RS and the MCS of other data for downlink transmission.

[0137] In a sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, the process 800 includes sending an indication of the ability of the UE to communicate one or more of uplink transmissions or downlink transmissions utilizing amplitude modulated PT-RS.

[0138] In a seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, sending an indication of the capabilities of the UE comprises sending the indication via one or more of RRC signaling, MAC CE, or PUCCH message.

[0139] In an eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, process 800 includes receiving configuration information indicating that a base station is to provide an indication of whether amplitude modulated PT-RS is enabled.

[0140] In a nineteenth aspect, alone or in combination with one or more of the first to eighteenth aspects, process 800 includes receiving an indication of communicating based at least in part on an amplitude modulated PT-RS.

[0141] In the twentieth aspect, alone or in combination with one or more of the first to nineteenth aspects, receiving the indication comprises receiving the indication via one or more of a DCI message, a MAC CE, or RRC signaling.

[0142] In a twenty-first aspect, either alone or in combination with one or more of aspects one to twentieth, process 800 comprises communicating an uplink transmission or a downlink transmission based at least in part on an assumption that an uplink transmission or a downlink transmission with an amplitude modulated PT-RS is to be transmitted based at least in part on sending the request.

[0143] In aspect twenty-second, alone or in combination with one or more of aspects one to twenty-first, process 800 includes receiving a downlink transmission; determining that the downlink transmission has an amplitude modulated PT-RS based at least in part on amplitude variations of resources associated with the PT-RS of the downlink transmission; estimating a CPE for the downlink transmission based at least in part on the amplitude modulated PT-RS; and attempting to extract data from the amplitude modulated PT-RS.

[0144] although Figure 8 Example blocks of process 800 are shown, but in some aspects process 800 may include additional blocks, fewer blocks, different blocks, or different Figure 8 Additionally or alternatively, two or more of the blocks of process 800 may be performed in parallel.

[0145] Fig. 9 9 is a diagram illustrating an example process 900 performed, for example, by a UE, in accordance with aspects of the present disclosure. Example process 900 is an example of a UE (eg, UE 120, etc.) performing operations associated with amplitude modulated PT-RS.

[0146] like Fig. 9 As shown, in some aspects, process 900 may include sending an indication of the capability of one or more of uplink transmission or downlink transmission of amplitude modulated PT-RS for communications of the UE (block 910). For example, as described above, the UE (e.g., using transmit processor 264, controller / processor 280, memory 282, etc.) may send an indication of the capability of one or more of uplink transmission or downlink transmission of amplitude modulated PT-RS for communications of the UE.

[0147] like Fig. 9As further shown, in some aspects, process 900 may include communicating an uplink transmission or a downlink transmission based at least in part on the indication (block 920). For example, as described above, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may communicate an uplink transmission or a downlink transmission based at least in part on the indication.

[0148] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0149] In the first aspect, sending the indication of the capability of the UE includes sending the indication via one or more of RRC signaling, MAC CE, or PUCCH message.

[0150] In a second aspect, alone or in combination with the first aspect, process 900 includes sending a request for an amplitude modulated PT-RS for an uplink transmission or a downlink transmission.

[0151] In a third aspect, alone or in combination with one or more of the first and second aspects, the amplitude modulated PT-RS includes a PT-RS sequence indicated by a phase of the amplitude modulated PT-RS, and data indicated by an amplitude of the amplitude modulated PT-RS.

[0152] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the communication downlink transmission includes receiving a downlink transmission, and the receiving downlink transmission includes removing a known PT-RS sequence from a portion of the downlink transmission received on resources allocated to the amplitude modulated PT-RS based at least in part on the phase of the amplitude modulated PT-RS; correcting channel effects for the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS; performing antenna combining and signal equalization for the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS, and performing soft metric extraction on the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS to extract data indicated by the amplitude of the amplitude modulated PT-RS.

[0153] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, correcting channel effects for the portion of the downlink transmission received on resources allocated to amplitude modulated PT-RS includes correcting channel effects based at least in part on DMRS.

[0154] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, communicating a downlink transmission includes receiving a downlink transmission, and receiving the downlink transmission includes removing a known PT-RS sequence from a portion of the downlink transmission received on resources allocated to the amplitude modulated PT-RS based at least in part on the phase of the amplitude modulated PT-RS; correcting channel effects for the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS; aggregating the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS to represent an equivalent phasor, and using the equivalent phasor to estimate the CPE for the downlink transmission.

[0155] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, correcting channel effects for the portion of the downlink transmission received on resources allocated to amplitude modulated PT-RS includes correcting channel effects based at least in part on DMRS.

[0156] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, data sent on resources associated with an amplitude modulated PT-RS has a CRC that is different from one or more CRCs associated with other data transmitted in an uplink transmission or a downlink transmission.

[0157] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, data sent on resources associated with an amplitude modulated PT-RS is associated with a dedicated ACK / NACK bit that is different from one or more ACK / NACK bits associated with other data communicated via an uplink transmission or a downlink transmission.

[0158] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, process 900 includes reporting a NACK for an amplitude modulated PT-RS; and receiving a repetition of the amplitude modulated PT-RS via a subsequent PT-RS resource.

[0159] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, process 900 includes sending a request for an MCS for symbols associated with an amplitude modulated PT-RS.

[0160] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, sending the request for the MCS includes sending the request for the MCS together with a request for an amplitude modulated PT-RS.

[0161] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, process 900 includes receiving an indication of an MCS for symbols associated with an amplitude modulated PT-RS.

[0162] In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the indication of the MCS is based at least in part on feedback signaling associated with a previous downlink transmission of a PT-RS with amplitude modulation.

[0163] In a fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, receiving an indication for the MCS comprises receiving an indication for the MCS via DCI, RRC signaling, or one or more MAC CEs.

[0164] In the sixteenth aspect, either alone or in combination with one or more of the first to fifteenth aspects, the indication of the MCS indicates the difference between the MCS for symbols associated with an amplitude modulated PT-RS and the MCS for symbols associated with other data for uplink transmission or downlink transmission.

[0165] In the seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, process 900 includes decoding data multiplexed with a PT-RS sequence on resources associated with an amplitude modulated PT-RS based at least in part on the configured MCS of the amplitude modulated PT-RS for downlink transmission, or the configured difference between the MCS of the amplitude modulated PT-RS and the MCS of other data for downlink transmission.

[0166] In an eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, process 900 includes receiving configuration information indicating that a base station is to provide an indication of whether amplitude modulated PT-RS is enabled.

[0167] In a nineteenth aspect, alone or in combination with one or more of the first to eighteenth aspects, process 900 includes receiving an indication of communicating based at least in part on an amplitude modulated PT-RS.

[0168] In the twentieth aspect, alone or in combination with one or more of the first to nineteenth aspects, receiving the indication comprises receiving the indication via one or more of a DCI message, a MAC CE, or RRC signaling.

[0169] In aspect twenty-one, either alone or in combination with one or more of aspects one to twentieth, process 900 comprises communicating an uplink transmission or a downlink transmission based at least in part on an assumption that an uplink transmission or a downlink transmission with an amplitude modulated PT-RS is to be transmitted based at least in part on sending the request.

[0170] In aspect twenty-second, alone or in combination with one or more of aspects one to twenty-first, process 900 includes receiving a downlink transmission; determining that the downlink transmission has an amplitude modulated PT-RS based at least in part on amplitude variations of resources associated with the PT-RS of the downlink transmission; estimating a CPE for the downlink transmission based at least in part on the amplitude modulated PT-RS; and attempting to extract data from the amplitude modulated PT-RS.

[0171] although Fig. 9 Example blocks of process 900 are shown, but in some aspects process 900 may include additional blocks, fewer blocks, different blocks, or different Fig. 9 Additionally or alternatively, two or more of the blocks of process 900 may be performed in parallel.

[0172] Fig.10 1 is a diagram illustrating an example process 1000 performed, for example, by a base station, in accordance with aspects of the present disclosure. Example process 1000 is an example of a base station (eg, base station 110, etc.) performing operations associated with amplitude modulated PT-RS.

[0173] like Fig.10 As shown, in some aspects, process 1000 may include receiving a request for an amplitude modulated PT-RS for an uplink transmission from a UE or a downlink transmission to a UE (block 1010). For example, as described above, a base station (e.g., using receive processor 238, controller / processor 240, memory 242, etc.) may receive a request for an amplitude modulated PT-RS for an uplink transmission from a UE or a downlink transmission to a UE.

[0174] like Fig.10 As further shown, in some aspects, process 1000 may include communicating an uplink transmission or a downlink transmission based at least in part on the request (block 1020). For example, as described above, the base station (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242, etc.) may communicate an uplink transmission or a downlink transmission based at least in part on the request.

[0175] Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0176] In a first aspect, process 1000 includes determining whether to send a downlink transmission using an amplitude modulated PT-RS based at least in part on one or more of an amount of data buffered for the downlink transmission, a size of a resource grant associated with the downlink transmission, an RSRP associated with the UE, or a movement of the UE.

[0177] In a second aspect, alone or in combination with the first aspect, the amplitude modulated PT-RS includes a PT-RS sequence indicated by a phase of the amplitude modulated PT-RS, and data indicated by an amplitude of the amplitude modulated PT-RS.

[0178] In a third aspect, alone or in combination with one or more of the first and second aspects, the communication uplink transmission includes receiving an uplink transmission, and the receiving uplink transmission includes removing a known PT-RS sequence from a portion of the uplink transmission received on resources allocated to the amplitude modulated PT-RS based at least in part on the phase of the amplitude modulated PT-RS; correcting channel effects for the portion of the uplink transmission received on the resources allocated to the amplitude modulated PT-RS; performing antenna combining and signal equalization for the portion of the uplink transmission received on the resources allocated to the amplitude modulated PT-RS, and performing soft metric extraction on the portion of the uplink transmission received on the resources allocated to the amplitude modulated PT-RS to extract data indicated by the amplitude of the amplitude modulated PT-RS.

[0179] In a fourth aspect, alone or in combination with one or more of the first to third aspects, correcting channel effects for the portion of uplink transmissions received on resources allocated to amplitude modulated PT-RS comprises correcting channel effects based at least in part on DMRS.

[0180] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the communication uplink transmission includes receiving an uplink transmission, and the receiving uplink transmission includes removing a known PT-RS sequence from a portion of the uplink transmission received on resources allocated to the amplitude modulated PT-RS based at least in part on the phase of the amplitude modulated PT-RS; correcting channel effects for the portion of the uplink transmission received on the resources allocated to the amplitude modulated PT-RS; aggregating the portion of the uplink transmission received on the resources allocated to the amplitude modulated PT-RS to represent an equivalent phasor, and using the equivalent phasor to estimate the CPE for the uplink transmission.

[0181] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, correcting channel effects for the portion of uplink transmissions received on resources allocated to amplitude modulated PT-RS comprises correcting channel effects based at least in part on DMRS.

[0182] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, data sent on resources associated with an amplitude modulated PT-RS has a CRC that is different from one or more CRCs associated with other data transmitted in an uplink transmission or a downlink transmission.

[0183] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, data sent on resources associated with an amplitude modulated PT-RS is associated with a dedicated ACK / NACK bit that is different from one or more ACK / NACK bits associated with other data communicated via an uplink transmission or a downlink transmission.

[0184] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, process 1000 includes receiving a NACK for an amplitude modulated PT-RS on a downlink transmission and sending a repetition of the amplitude modulated PT-RS via a subsequent PT-RS resource.

[0185] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, process 1000 includes receiving a request for an MCS for symbols associated with an amplitude modulated PT-RS.

[0186] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, receiving the request for the MCS includes receiving the request for the MCS together with a request for an amplitude modulated PT-RS.

[0187] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the process 1000 includes sending an indication of an MCS for symbols associated with an amplitude modulated PT-RS.

[0188] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the indication of the MCS is based at least in part on feedback signaling associated with a previous downlink transmission of a PT-RS with amplitude modulation.

[0189] In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, sending an indication for the MCS includes sending an indication for the MCS via DCI, RRC signaling, or one or more MAC CEs.

[0190] In the fifteenth aspect, either alone or in combination with one or more of the first to fourteenth aspects, the indication of the MCS indicates the difference between the MCS for symbols associated with an amplitude modulated PT-RS and the MCS for symbols associated with other data for uplink transmission or downlink transmission.

[0191] In a sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, process 1000 includes decoding data multiplexed with a PT-RS sequence on resources associated with an amplitude modulated PT-RS based at least in part on a configured MCS for the amplitude modulated PT-RS for uplink transmission, or a configured difference between the MCS for the amplitude modulated PT-RS and the MCS of other data for uplink transmission.

[0192] In a seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, the process 1000 includes receiving an indication of a capability of the UE to communicate one or more of an uplink transmission or a downlink transmission utilizing an amplitude modulated PT-RS.

[0193] In an eighteenth aspect, either alone or in combination with one or more of the first to seventeenth aspects, receiving an indication of the capabilities of the UE comprises receiving the indication via one or more of RRC signaling, MAC CE, or PUCCH message.

[0194] In a nineteenth aspect, alone or in combination with one or more of the first to eighteenth aspects, process 1000 includes sending configuration information indicating that a base station is to provide an indication of whether amplitude modulated PT-RS is enabled.

[0195] In a twentieth aspect, alone or in combination with one or more of the first to nineteenth aspects, process 1000 comprises sending an indication of communicating based at least in part on an amplitude modulated PT-RS.

[0196] In a twenty-first aspect, alone or in combination with one or more of the first to twentieth aspects, sending the indication comprises sending the indication via one or more of a DCI message, a MAC CE, or RRC signaling.

[0197] In aspect twenty-second, alone or in combination with one or more of aspects one to twenty-first, process 1000 includes receiving an uplink transmission; determining that the uplink transmission has an amplitude modulated PT-RS based at least in part on amplitude variations of resources associated with the PT-RS of the uplink transmission; estimating a CPE for the uplink transmission based at least in part on the amplitude modulated PT-RS; and attempting to extract data from the amplitude modulated PT-RS.

[0198] although Fig.10 Example blocks of process 1000 are shown, but in some aspects process 1000 may include additional blocks, fewer blocks, different blocks, or different Fig.10 Additionally or alternatively, two or more of the blocks of process 1000 may be performed in parallel.

[0199] Fig.11 1 is a diagram illustrating an example process 1100, performed, for example, by a base station, in accordance with aspects of the present disclosure. Example process 1100 is an example of operations performed by a base station (eg, base station 110, etc.) associated with amplitude modulated PT-RS.

[0200] like Fig.11 As shown, in some aspects, process 1100 may include receiving an indication of the capability of one or more of uplink transmission or downlink transmission of amplitude modulated PT-RS for communications of the UE (block 1110). For example, as described above, a base station (e.g., using receive processor 238, controller / processor 240, memory 242, etc.) may receive an indication of the capability of one or more of uplink transmission or downlink transmission of amplitude modulated PT-RS for communications of the UE.

[0201] like Fig.11 As further shown, in some aspects, process 1100 may include communicating an uplink transmission or a downlink transmission based at least in part on the indication (block 1120). For example, as described above, the base station (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242, etc.) may communicate an uplink transmission or a downlink transmission based at least in part on the indication.

[0202] Process 1100 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0203] In a first aspect, process 1100 includes determining whether to send a downlink transmission using an amplitude modulated PT-RS based at least in part on one or more of an amount of data buffered for the downlink transmission, a size of a resource grant associated with the downlink transmission, an RSRP associated with the UE, or a movement of the UE.

[0204] In a second aspect, alone or in combination with the first aspect, receiving an indication of the capabilities of the UE comprises receiving the indication via one or more of RRC signaling, MAC CE, or PUCCH message.

[0205] In a third aspect, alone or in combination with one or more of the first and second aspects, process 1100 includes receiving a request for an amplitude modulated PT-RS for an uplink transmission or a downlink transmission.

[0206] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the amplitude modulated PT-RS includes a PT-RS sequence indicated by a phase of the amplitude modulated PT-RS, and data indicated by an amplitude of the amplitude modulated PT-RS.

[0207] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the communication uplink transmission includes receiving an uplink transmission, and the receiving uplink transmission includes removing a known PT-RS sequence from a portion of the uplink transmission received on resources allocated to the amplitude modulated PT-RS based at least in part on the phase of the amplitude modulated PT-RS; correcting channel effects for the portion of the uplink transmission received on the resources allocated to the amplitude modulated PT-RS; performing antenna combining and signal equalization for the portion of the uplink transmission received on the resources allocated to the amplitude modulated PT-RS, and performing soft metric extraction on the portion of the uplink transmission received on the resources allocated to the amplitude modulated PT-RS to extract data indicated by the amplitude of the amplitude modulated PT-RS.

[0208] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, correcting channel effects for the portion of uplink transmissions received on resources allocated to amplitude modulated PT-RS comprises correcting channel effects based at least in part on DMRS.

[0209] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the communication uplink transmission includes receiving an uplink transmission, and the receiving uplink transmission includes removing a known PT-RS sequence from a portion of the uplink transmission received on resources allocated to the amplitude modulated PT-RS based at least in part on the phase of the amplitude modulated PT-RS; correcting channel effects for the portion of the uplink transmission received on the resources allocated to the amplitude modulated PT-RS; aggregating the portion of the uplink transmission received on the resources allocated to the amplitude modulated PT-RS to represent an equivalent phasor, and using the equivalent phasor to estimate the CPE for the uplink transmission.

[0210] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, correcting channel effects for the portion of uplink transmissions received on resources allocated to amplitude modulated PT-RS comprises correcting channel effects based at least in part on DMRS.

[0211] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, data sent on resources associated with an amplitude modulated PT-RS has a CRC that is different from one or more CRCs associated with other data transmitted in an uplink transmission or a downlink transmission.

[0212] In the tenth aspect, either alone or in combination with one or more of the first to ninth aspects, data sent on resources associated with an amplitude modulated PT-RS is associated with a dedicated ACK / NACK bit that is different from one or more ACK / NACK bits associated with other data communicated via an uplink transmission or a downlink transmission.

[0213] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, process 1100 includes receiving a NACK for an amplitude modulated PT-RS on a downlink transmission; and sending a repetition of the amplitude modulated PT-RS via a subsequent PT-RS resource.

[0214] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the process 1100 includes receiving a request for an MCS for symbols associated with an amplitude modulated PT-RS.

[0215] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, receiving the request for the MCS includes receiving the request for the MCS together with a request for an amplitude modulated PT-RS.

[0216] In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the process 1100 includes sending an indication of an MCS for symbols associated with an amplitude modulated PT-RS.

[0217] In a fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, the indication of the MCS is based at least in part on feedback signaling associated with a previous downlink transmission of a PT-RS with amplitude modulation.

[0218] In a sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, sending an indication for the MCS includes sending an indication for the MCS via DCI, RRC signaling, or one or more MAC CEs.

[0219] In the seventeenth aspect, either alone or in combination with one or more of the first to sixteenth aspects, the indication of the MCS indicates the difference between the MCS for symbols associated with an amplitude modulated PT-RS and the MCS for symbols associated with other data for uplink transmission or downlink transmission.

[0220] In an eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, process 1100 includes decoding data multiplexed with a PT-RS sequence on resources associated with an amplitude modulated PT-RS based at least in part on a configured MCS for the amplitude modulated PT-RS for uplink transmission, or a configured difference between the MCS for the amplitude modulated PT-RS and the MCS of other data for uplink transmission.

[0221] In a nineteenth aspect, alone or in combination with one or more of the first to eighteenth aspects, the process 1100 includes sending configuration information indicating that the base station is to provide an indication of whether amplitude modulated PT-RS is enabled.

[0222] In a twentieth aspect, alone or in combination with one or more of the first to nineteenth aspects, the process 1100 comprises sending an indication of communicating based at least in part on an amplitude modulated PT-RS.

[0223] In a twenty-first aspect, alone or in combination with one or more of the first to twentieth aspects, sending the indication comprises sending the indication via one or more of a DCI message, a MAC CE, or RRC signaling.

[0224] In aspect twenty-second, alone or in combination with one or more of aspects one to twenty-first, process 1100 includes receiving an uplink transmission; determining that the uplink transmission has an amplitude modulated PT-RS based at least in part on amplitude variations of resources associated with the PT-RS of the uplink transmission; estimating a CPE for the uplink transmission based at least in part on the amplitude modulated PT-RS; and attempting to extract data from the amplitude modulated PT-RS.

[0225] although Fig.11 Example blocks of process 1100 are shown, but in some aspects process 1100 may include additional blocks, fewer blocks, different blocks, or different Fig.11 Additionally or alternatively, two or more of the blocks of process 1100 may be performed in parallel.

[0226] Fig.121 is a block diagram of an example apparatus 1200 for wireless communication. Apparatus 1200 may be a UE, or a UE may include apparatus 1200. In some aspects, apparatus 1200 includes a receiving component 1202 and a transmitting component 1204 that may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1200 may communicate with another apparatus 1206 (such as a UE, a base station, or another wireless communication device) using receiving component 1202 and transmitting component 1204. As further shown, apparatus 1200 may include one or more of a decoding component 1208, a determining component 1210, and the like.

[0227] In some aspects, the apparatus 1200 may be configured to perform the Figure 4-Figure 7 Additionally or alternatively, the apparatus 1200 may be configured to perform one or more processes described herein, such as Figure 8 The process of 800 Fig. 9 In some aspects, the apparatus 1200 and / or Fig.12 One or more of the components shown may include the above combined Figure 2 Additionally or alternatively, Fig.12 One or more of the components shown may be implemented in combination with Figure 2 Additionally or alternatively, one or more components in the set of components may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of the component.

[0228] The receiving component 1202 may receive communications from the apparatus 1206, such as reference signals, control information, data communications, or a combination thereof. The receiving component 1202 may provide the received communications to one or more other components of the apparatus 1200. In some aspects, the receiving component 1202 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding) on ​​the received communications and may provide the processed signals to one or more other components of the apparatus 1206. In some aspects, the receiving component 1202 may include the above in combination with Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of a UE are described.

[0229] The transmitting component 1204 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the device 1206. In some aspects, one or more other components of the device 1206 may generate communications and may provide the generated communications to the transmitting component 1204 for transmission to the device 1206. In some aspects, the transmitting component 1204 may perform signal processing (such as filtering, amplification, modulation, digital to analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 1206. In some aspects, the transmitting component 1204 may include the above in combination with Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmit component 1204 can be co-located with the receive component 1202 in a transceiver.

[0230] The transmitting component 1204 may transmit a request for an amplitude modulated PT-RS for an uplink transmission or a downlink transmission. The transmitting component 1204 and / or the receiving component 1202 may communicate the uplink transmission or the downlink transmission based at least in part on the request. In some aspects, the transmitting component 1204 and / or the receiving component 1202 may include the above combined Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of a UE are described.

[0231] Transmitting component 1204 can report a NACK for the amplitude modulated PT-RS.

[0232] Receiving component 1202 can receive repetitions of the amplitude modulated PT-RS via subsequent PT-RS resources.

[0233] Transmitting component 1204 can transmit a request for a modulation and coding scheme for symbols associated with an amplitude modulated PT-RS.

[0234] Receiving component 1202 can receive an indication of a modulation and coding scheme for symbols associated with an amplitude modulated PT-RS.

[0235] Transmitting component 1204 can transmit an indication of the ability of the UE to communicate one or more of an uplink transmission or a downlink transmission utilizing amplitude modulated PT-RS.

[0236] Receiving component 1202 can receive configuration information indicating that a base station is to provide an indication of whether amplitude modulated PT-RS is enabled.

[0237] Receiving component 1202 can receive an indication of communicating based at least in part on an amplitude modulated PT-RS.

[0238] The transmitting component 1204 and / or the receiving component 1202 can communicate an uplink transmission or a downlink transmission based at least in part on an assumption that the uplink transmission or the downlink transmission is to be transmitted using an amplitude modulated PT-RS based at least in part on transmitting the request.

[0239] Receiving component 1202 can receive a downlink transmission.

[0240] The determining component 1210 may determine that the downlink transmission has an amplitude modulated PT-RS based at least in part on the amplitude variation of the resources associated with the downlink transmission's PT-RS. In some aspects, the determining component 1210 may include the above in combination with Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of a UE are described.

[0241] Receiving component 1202 can estimate a common phase error for downlink transmissions based at least in part on the amplitude modulated PT-RS.

[0242] The decoding component 1208 and / or the receiving component 1202 can attempt to extract data from the amplitude modulated PT-RS. In some aspects, the decoding component 1208 can include the above combined Figure 2 A demodulator, a MIMO detector, a receive processor, a controller / processor, a memory, or a combination thereof of a UE is described.

[0243] Transmitting component 1204 can transmit an indication of one or more of an uplink transmission or a downlink transmission capability of the UE to communicate with amplitude modulated PT-RS. Transmitting component 1204 and / or receiving component 1202 can communicate the uplink transmission or the downlink transmission based at least in part on the indication.

[0244] Transmitting component 1204 can transmit a request for an amplitude modulated PT-RS for an uplink transmission or a downlink transmission.

[0245] Transmitting component 1204 can report a NACK for the amplitude modulated PT-RS.

[0246] Receiving component 1202 can receive repetitions of the amplitude modulated PT-RS via subsequent PT-RS resources.

[0247] Transmitting component 1204 can transmit a request for a modulation and coding scheme for symbols associated with an amplitude modulated PT-RS.

[0248] Receiving component 1202 can receive an indication of a modulation and coding scheme for symbols associated with an amplitude modulated PT-RS.

[0249] Receiving component 1202 can receive configuration information indicating that a base station is to provide an indication of whether amplitude modulated PT-RS is enabled.

[0250] Receiving component 1202 can receive an indication of communicating based at least in part on an amplitude modulated PT-RS.

[0251] The transmitting component 1204 and / or the receiving component 1202 can communicate an uplink transmission or a downlink transmission based at least in part on an assumption that the uplink transmission or the downlink transmission is to be transmitted using an amplitude modulated PT-RS based at least in part on sending the request.

[0252] Receiving component 1202 can receive a downlink transmission.

[0253] Determining component 1210 can determine that the downlink transmission has an amplitude modulated PT-RS based at least in part on amplitude variation of resources associated with the downlink transmission's PT-RS.

[0254] Receiving component 1202 can estimate a common phase error for downlink transmissions based at least in part on the amplitude modulated PT-RS.

[0255] Receiving component 1202 and / or decoding component 1208 can attempt to extract data from the amplitude modulated PT-RS.

[0256] supply Fig.12 The number and arrangement of components shown are provided as examples. In practice, there may be additional components, fewer components, different components, or different Fig.12 Components with different arrangements of components shown. In addition, Fig.12 Two or more of the components shown may be implemented in a single component, or Fig.12 The single components shown may be implemented as multiple, distributed components. Additionally or alternatively, Fig.12 The collection of (one or more) components shown may be executed as Fig.12 Another collection of components shown performs one or more of the functions described.

[0257] Fig.131 is a block diagram of an example apparatus 1300 for wireless communication. Apparatus 1300 may be a base station, or a base station may include apparatus 1300. In some aspects, apparatus 1300 includes a receiving component 1302 and a transmitting component 1304 that may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1300 may communicate with another apparatus 1306 (e.g., a UE, a base station, or another wireless communication device) using receiving component 1302 and transmitting component 1304. As further shown, apparatus 1300 may include one or more of a decoding component 1308, a determining component 1310, and the like.

[0258] In some aspects, the apparatus 1300 may be configured to perform the Figure 4-Figure 7 Additionally or alternatively, the apparatus 1300 may be configured to perform one or more processes described herein, such as Fig.10 The process of 1000 Fig.11 In some aspects, the apparatus 1300 and / or Fig.13 One or more of the components shown may include the above combined Figure 2 Additionally or alternatively, Fig.13 One or more of the components shown may be implemented in combination with Figure 2 Additionally or alternatively, one or more components in the set of components may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of the component.

[0259] The receiving component 1302 may receive communications from the apparatus 1306, such as reference signals, control information, data communications, or a combination thereof. The receiving component 1302 may provide the received communications to one or more other components of the apparatus 1300. In some aspects, the receiving component 1302 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding) on ​​the received communications and may provide the processed signals to one or more other components of the apparatus 1306. In some aspects, the receiving component 1302 may include the above in combination with Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of a base station are described.

[0260] The transmitting component 1304 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 1306. In some aspects, one or more other components of the apparatus 1306 may generate communications and may provide the generated communications to the transmitting component 1304 for transmission to the apparatus 1306. In some aspects, the transmitting component 1304 may perform signal processing (such as filtering, amplification, modulation, digital to analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the apparatus 1306. In some aspects, the transmitting component 1304 may include the above in combination with Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described base stations. In some aspects, the transmit component 1304 can be co-located with the receive component 1302 in a transceiver.

[0261] Receiving component 1302 can receive a request for an amplitude modulated PT-RS for an uplink transmission from a UE or a downlink transmission to a UE. Transmitting component 1304 and / or receiving component 1302 can communicate the uplink transmission or the downlink transmission based at least in part on the request.

[0262] The determining component 1310 may determine whether to send the downlink transmission using an amplitude modulated PT-RS based at least in part on one or more of an amount of data buffered for the downlink transmission, a size of a resource grant associated with the downlink transmission, a reference signal received power associated with the UE, or a movement of the UE. In some aspects, the determining component 1310 may include the above in combination with Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of a base station are described.

[0263] Receiving component 1302 can receive a NACK for an amplitude modulated PT-RS on a downlink transmission.

[0264] Transmitting component 1304 can transmit repetitions of the amplitude modulated PT-RS via subsequent PT-RS resources.

[0265] Receiving component 1302 can receive a request for a modulation and coding scheme for symbols associated with an amplitude modulated PT-RS.

[0266] Transmitting component 1304 can transmit an indication of a modulation and coding scheme for symbols associated with an amplitude modulated PT-RS.

[0267] Receiving component 1302 can receive an indication of an ability of a UE to communicate one or more of an uplink transmission or a downlink transmission utilizing amplitude modulated PT-RS.

[0268] Transmitting component 1304 may transmit configuration information indicating that the base station is to provide an indication of whether amplitude modulated PT-RS is enabled.

[0269] Transmitting component 1304 can transmit an indication of communicating based at least in part on the amplitude modulated PT-RS.

[0270] Receiving component 1302 can receive an uplink transmission.

[0271] The determining component 1310 may determine that the uplink transmission has an amplitude modulated PT-RS based at least in part on the amplitude variation of the resources associated with the uplink transmission's PT-RS. In some aspects, the determining component 1310 may include the above in combination with Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of a base station are described.

[0272] The receiving component 1302 and / or the decoding component 1308 may estimate a common phase error for uplink transmission based at least in part on the amplitude modulated PT-RS. In some aspects, the receiving component 1302 and / or the decoding component 1308 may include the above combined Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of a base station are described.

[0273] The receiving component 1302 and / or the decoding component 1308 can attempt to extract data from the amplitude modulated PT-RS. In some aspects, the receiving component 1302 and / or the decoding component 1308 can include the above combined Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of a base station are described.

[0274] Receiving component 1302 can receive an indication of one or more of an uplink transmission or a downlink transmission capability for communication of the UE with amplitude modulated PT-RS. Transmitting component 1304 and / or receiving component 1302 can communicate the uplink transmission or the downlink transmission based at least in part on the indication.

[0275] The determining component 1310 can determine whether to send a downlink transmission using an amplitude modulated PT-RS based at least in part on one or more of an amount of data buffered for the downlink transmission, a size of a resource grant associated with the downlink transmission, a reference signal received power associated with the UE, or a movement of the UE.

[0276] Receiving component 1302 can receive a request for an amplitude modulated PT-RS for an uplink transmission or a downlink transmission.

[0277] Receiving component 1302 can receive a NACK for an amplitude modulated PT-RS on a downlink transmission.

[0278] Transmitting component 1304 can transmit repetitions of the amplitude modulated PT-RS via subsequent PT-RS resources.

[0279] Receiving component 1302 can receive a request for a modulation and coding scheme for symbols associated with an amplitude modulated PT-RS.

[0280] Transmitting component 1304 can transmit an indication of a modulation and coding scheme for symbols associated with an amplitude modulated PT-RS.

[0281] Transmitting component 1304 may transmit configuration information indicating that the base station is to provide an indication of whether amplitude modulated PT-RS is enabled.

[0282] Transmitting component 1304 can transmit an indication of communicating based at least in part on the amplitude modulated PT-RS.

[0283] Receiving component 1302 can receive an uplink transmission.

[0284] Determining component 1310 can determine that the uplink transmission has an amplitude modulated PT-RS based at least in part on a variation in amplitude of a resource associated with the uplink transmission's PT-RS.

[0285] Receiving component 1302 and / or decoding component 1308 can estimate a common phase error for uplink transmissions based at least in part on the amplitude modulated PT-RS.

[0286] Receiving component 1302 and / or decoding component 1308 can attempt to extract data from the amplitude modulated PT-RS.

[0287] supply Fig.13 The number and arrangement of components shown are provided as examples. In practice, there may be additional components, fewer components, different components, or different Fig.13 Components with different arrangements of components shown. In addition, Fig.13Two or more of the components shown may be implemented in a single component, or Fig.13 The single components shown may be implemented as multiple, distributed components. Additionally or alternatively, Fig.13 The collection of (one or more) components shown may be executed as Fig.13 Another collection of components shown performs one or more of the functions described.

[0288] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit these aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of these aspects.

[0289] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and / or a combination of hardware and software.

[0290] As used herein, satisfying a threshold may refer to a value that is greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0291] Obviously, the systems and / or methods described herein can be implemented in various forms of hardware, firmware, and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit these aspects. Thus, the operation and behavior of the systems and / or methods are described herein without reference to specific software code - it should be understood that software and hardware can be designed to implement the systems and / or methods based at least in part on the description herein.

[0292] Although the specific combination of features is narrated in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features can be combined in a manner not specifically stated in the claims and / or disclosed in the specification. Although each dependent claim listed below can only be directly subordinate to a claim, the disclosure of various aspects includes each dependent claim and each other claim combination in the claim set. The phrase of "at least one" in the list of the reference project refers to any combination of those projects, including a single member. As an example, "at least one of a, b, or c" is intended to cover any combination of a, b, c, ab, ac, bc, and abc and multiple identical elements (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc or any other order of a, b, and c).

[0293] Elements, actions, or instructions used herein should not be interpreted as critical or essential unless explicitly described as such. In addition, as used herein, the articles "a" and "an" are intended to include one or more items and can be used interchangeably with "one or more." In addition, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, unrelated items, combinations of related and unrelated items, etc.) and can be used interchangeably with "one or more." Figure 1 In the case of multiple items, "only one" or similar language is used. In addition, as used herein, the terms "having" and the like are intended to be open-ended terms. In addition, the phrase "based on" is intended to mean "based at least in part on," unless explicitly stated otherwise.

Claims

1. A method of wireless communication performed by a user equipment UE, comprising: Sending a request for an amplitude modulated phase tracking reference signal PT-RS for uplink transmission or downlink transmission; as well as communicating the uplink transmission or the downlink transmission using an amplitude modulated PT-RS based at least in part on the request, The data carried by the amplitude modulated PT-RS is associated with a dedicated cyclic redundancy check CRC and / or a hybrid automatic repeat request HARQ feedback.

2. The method according to claim 1, wherein the amplitude modulated PT-RS comprises: a PT-RS sequence indicated by the phase of the amplitude modulated PT-RS, and The data indicated by the amplitude of the amplitude modulated PT-RS.

3. The method of claim 1 , wherein communicating the downlink transmission comprises receiving the downlink transmission, and Wherein receiving the downlink transmission comprises: removing a known PT-RS sequence from a portion of the downlink transmission received on resources allocated to the amplitude modulated PT-RS based at least in part on a phase of the amplitude modulated PT-RS; correcting for channel effects for the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS; performing antenna combining and signal equalization for the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS; as well as Soft metric extraction is performed on the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS to extract data indicated by the amplitude of the amplitude modulated PT-RS.

4. The method of claim 3, wherein correcting channel effects for the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS comprises: The channel effects are corrected based at least in part on a demodulation reference signal.

5. The method of claim 1 , wherein communicating the downlink transmission comprises receiving the downlink transmission, and Wherein receiving the downlink transmission comprises: removing a known PT-RS sequence from a portion of the downlink transmission received on resources allocated to the amplitude modulated PT-RS based at least in part on a phase of the amplitude modulated PT-RS; correcting for channel effects for the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS; aggregating the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS to represent an equivalent phasor; as well as The equivalent phasor is used to estimate a common phase error for the downlink transmission.

6. The method of claim 1, wherein data transmitted on resources associated with an amplitude modulated PT-RS has a CRC that is different from one or more cyclic redundancy checks (CRCs) associated with other data of the uplink transmission or the downlink transmission.

7. The method according to claim 1, further comprising: reporting a negative acknowledgement of the amplitude modulated PT-RS; as well as A repetition of the amplitude modulated PT-RS is received via a subsequent PT-RS resource.

8. The method according to claim 1, further comprising: receiving an indication of a modulation and coding scheme MCS for symbols associated with the amplitude modulated PT-RS, wherein the indication of the modulation and coding scheme is based at least in part on one or more of: Feedback signaling associated with a previous downlink transmission of PT-RS with amplitude modulation, or A request by the UE for the MCS for the symbols associated with the amplitude modulated PT-RS.

9. The method of claim 8, wherein the indication of the modulation and coding scheme indicates a difference between the modulation and coding scheme used for symbols associated with the amplitude modulated PT-RS and a modulation and coding scheme used for symbols associated with other data of the uplink transmission or the downlink transmission.

10. The method according to claim 1, further comprising: decoding data multiplexed with a PT-RS sequence on resources associated with the amplitude modulated PT-RS based at least in part on: the configured modulation and coding scheme for amplitude modulated PT-RS for downlink transmission; or The configured difference between the modulation and coding scheme for amplitude modulated PT-RS and the modulation and coding scheme for other data transmitted on the downlink.

11. The method according to claim 1, further comprising: Configuration information is received indicating that the base station is to provide an indication of whether amplitude modulated PT-RS is enabled.

12. The method of claim 1 , further comprising communicating the uplink transmission or the downlink transmission based at least in part on one or more of: receiving an indication to communicate based at least in part on an amplitude modulated PT-RS; or Based at least in part on sending the request, an assumption is made that the uplink transmission or the downlink transmission is to be sent using an amplitude modulated PT-RS.

13. The method according to claim 1, further comprising: receiving the downlink transmission; Determining that the downlink transmission has an amplitude modulated PT-RS based at least in part on a variation in amplitude of a resource associated with the PT-RS of the downlink transmission; estimating a common phase error for the downlink transmission based at least in part on the amplitude modulated PT-RS; and An attempt is made to extract data from the amplitude modulated PT-RS.

14. A method of wireless communication performed by a user equipment UE, comprising: sending an indication of a capability of one or more of uplink transmission or downlink transmission of an amplitude modulated phase tracking reference signal (PT-RS) for communications of the UE; as well as communicating an uplink transmission or a downlink transmission using an amplitude modulated PT-RS based at least in part on the indication, The data carried by the amplitude modulated PT-RS is associated with a dedicated cyclic redundancy check CRC and / or a hybrid automatic repeat request HARQ feedback.

15. The method according to claim 14, wherein the amplitude modulated PT-RS comprises: a PT-RS sequence indicated by the phase of the amplitude modulated PT-RS, and The data indicated by the amplitude of the amplitude modulated PT-RS.

16. The method of claim 14, wherein communicating the downlink transmission comprises receiving the downlink transmission, and Wherein receiving the downlink transmission comprises: removing a known PT-RS sequence from a portion of the downlink transmission received on resources allocated to the amplitude modulated PT-RS based at least in part on a phase of the amplitude modulated PT-RS; correcting for channel effects for the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS; performing antenna combining and signal equalization for the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS; as well as Soft metric extraction is performed on the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS to extract data indicated by the amplitude of the amplitude modulated PT-RS.

17. The method of claim 16, wherein correcting for channel effects for the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS comprises: The channel effects are corrected based at least in part on a demodulation reference signal.

18. The method of claim 14, wherein communicating the downlink transmission comprises receiving the downlink transmission, and Wherein receiving the downlink transmission comprises: removing a known PT-RS sequence from a portion of the downlink transmission received on resources allocated to the amplitude modulated PT-RS based at least in part on a phase of the amplitude modulated PT-RS; correcting for channel effects for the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS; aggregating the portion of the downlink transmission received on the resources allocated to the amplitude modulated PT-RS to represent an equivalent phasor; as well as The equivalent phasor is used to estimate a common phase error for the downlink transmission.

19. The method of claim 14, wherein data transmitted on resources associated with an amplitude modulated PT-RS has a CRC that is different from one or more cyclic redundancy checks (CRCs) associated with other data of the uplink transmission or the downlink transmission.

20. The method of claim 14, further comprising: reporting a negative acknowledgement of the amplitude modulated PT-RS; as well as A repetition of the amplitude modulated PT-RS is received via a subsequent PT-RS resource.

21. The method of claim 14, further comprising: receiving an indication of a modulation and coding scheme MCS for symbols associated with the amplitude modulated PT-RS, wherein the indication of the modulation and coding scheme is based at least in part on one or more of: Feedback signaling associated with a previous downlink transmission of PT-RS with amplitude modulation, or A request by the UE for the MCS for the symbols associated with the amplitude modulated PT-RS.

22. The method of claim 21, wherein the indication of the modulation and coding scheme indicates a difference between the modulation and coding scheme used for symbols associated with the amplitude modulated PT-RS and a modulation and coding scheme used for symbols associated with other data of the uplink transmission or the downlink transmission.

23. The method of claim 14, further comprising: decoding data multiplexed with a PT-RS sequence on resources associated with the amplitude modulated PT-RS based at least in part on: The configured modulation and coding scheme of the amplitude modulated PT-RS for downlink transmission, or The configured difference between the modulation and coding scheme for amplitude modulated PT-RS and the modulation and coding scheme for other data transmitted on the downlink.

24. The method of claim 14, further comprising: Configuration information is received indicating that the base station is to provide an indication of whether amplitude modulated PT-RS is enabled.

25. The method of claim 14, further comprising communicating that the uplink transmission or the downlink transmission is based at least in part on one or more of: receiving an indication to communicate based at least in part on an amplitude modulated PT-RS; or Based at least in part on sending the request, an assumption is made that the uplink transmission or the downlink transmission is to be sent using an amplitude modulated PT-RS.

26. The method of claim 14, further comprising: receiving the downlink transmission; Determining that the downlink transmission has an amplitude modulated PT-RS based at least in part on a variation in amplitude of a resource associated with the PT-RS of the downlink transmission; estimating a common phase error for the downlink transmission based at least in part on the amplitude modulated PT-RS; and An attempt is made to extract data from the amplitude modulated PT-RS.

27. A user equipment for wireless communication, comprising: Memory; as well as one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: sending a request for an amplitude modulated phase tracking reference signal PT-RS for uplink transmission or downlink transmission; and communicating the uplink transmission or the downlink transmission using an amplitude modulated PT-RS based at least in part on the request, The data carried by the amplitude modulated PT-RS is associated with a dedicated cyclic redundancy check CRC and / or a hybrid automatic repeat request HARQ feedback.

28. The UE according to claim 27, wherein the amplitude modulated PT-RS comprises: a PT-RS sequence indicated by the phase of the amplitude modulated PT-RS, and The data indicated by the amplitude of the amplitude modulated PT-RS.

29. A user equipment UE for wireless communication, comprising: Memory; as well as one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: sending an indication of a capability of one or more of uplink transmission or downlink transmission of an amplitude modulated phase tracking reference signal (PT-RS) for communications of the UE; as well as communicating an uplink transmission or a downlink transmission using an amplitude modulated PT-RS based at least in part on the indication, The data carried by the amplitude modulated PT-RS is associated with a dedicated cyclic redundancy check CRC and / or a hybrid automatic repeat request HARQ feedback.

30. The UE according to claim 29, wherein the amplitude modulated PT-RS comprises: a PT-RS sequence indicated by the phase of the amplitude modulated PT-RS, and The data indicated by the amplitude of the amplitude modulated PT-RS.

31. A non-transitory computer-readable medium storing one or more instructions for wireless communication, which, when executed by one or more processors of a user equipment (UE), cause the one or more processors to perform the method according to any one of claims 1-13.

32. A non-transitory computer-readable medium storing one or more instructions for wireless communication, which, when executed by one or more processors of a user equipment (UE), cause the one or more processors to perform the method according to any one of claims 14-26.

33. A computer program product comprising a computer program which, when executed by a processor, implements the steps of the method according to any one of claims 1 to 13.

34. A computer program product comprising a computer program which, when executed by a processor, implements the steps of the method according to any one of claims 14 to 26.

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