Non-linear reference signal design

Abstract

Methods, systems, and devices for wireless communication are described. A receiving device can receive a channel estimation reference signal (CHEST-RS) transmitted over a bandwidth, the CHEST-RS being associated with a power amplifier (PA) configuration of a transmitting device. The receiving device can determine a channel estimation measurement associated with the PA configuration based at least in part on the CHEST-RS. The receiving device can receive a nonlinearity estimation reference signal (NLEST-RS) transmitted over a subset bandwidth of the bandwidth, the NLEST-RS being associated with the PA configuration. The receiving device can determine a nonlinearity estimation measurement associated with the PA configuration based at least in part on the NLEST-RS and the CHEST-RS, the nonlinearity estimation measurement identifying a nonlinearity response of the PA configuration. The receiving device can communicate with the transmitting device based at least in part on the channel estimation measurement and the nonlinearity response of the PA configuration.

Description

[0001] Cross-references

[0002] This patent application claims priority to U.S. Patent Application No. 17 / 141,190, filed January 4, 2021, entitled “NON-LINEAR REFERENCESIGNAL DESIGN”, which has been assigned to the assignee of this application and is expressly incorporated herein by reference. Technical Field

[0003] The following pertains to wireless communication, including the design of nonlinear reference signals.

[0004] background

[0005] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, message sending and receiving, broadcasting, and so on. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth-generation (4G) systems (such as Long Term Evolution (LTE) systems, LTE-A Advanced (LTE-A) systems, or LTE-A Pro systems) and fifth-generation (5G) systems, which may be referred to as New Radio (NR) systems. These systems can employ various technologies, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), or Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each of which simultaneously supports communication from multiple communication devices, which may also be referred to as User Equipment (UE).

[0006] Overview

[0007] The described technology relates to improved methods, systems, devices, or apparatuses (equipment) supporting the design and communication of nonlinear reference signals. Generally, the described technology provides various mechanisms to support wireless communication in wireless networks. Aspects of the described technology support various mechanisms for nonlinear reference signals (NL-RS) used to measure or quantify the nonlinear response of a power amplifier (PA) configuration of a transmitting device (such as a base station and / or user equipment (UE)). The transmitting device can configure, for example, a channel estimation reference signal (CHEST-RS) and a nonlinear estimation reference signal (NLEST-RS) for transmission to a receiving device. The receiving device can receive the CHEST-RS and NLEST-RS signals, along with other information, and use these signals to measure the nonlinear response for a corresponding PA configuration of the transmitting device (e.g., a base station). For example, the receiving device can measure, identify, quantize, or otherwise determine channel estimation measurements (e.g., based on CHEST-RS) and nonlinear estimation measurements (e.g., based on NLEST-RS) for a specific PA configuration. The receiving device can then communicate with the transmitting device based on the channel response (e.g., based on CHEST-RS) and the nonlinear response (e.g., based on NLEST-RS). For example, the receiving device may transmit or otherwise provide feedback information to the transmitting device, indicating at least some aspects of channel estimation measurements or nonlinear estimation measurements, or both, as well as other aspects. The transmitting device may perform mitigation of interference (such as noise) introduced into the channel associated with the nonlinear response of the transmitting device. The transmitting device may configure the receiving device with CHEST-RS and NLEST-RS resources, which may be the same or different between the two reference signals.

[0008] To avoid excessive indexes associated with NLEST-RS (e.g., especially when each NLEST-RS is associated with a different antenna configuration), base stations can employ a dynamic parameter set scheme for NLEST-RS in some examples. For instance, a numbering scheme can include some indices that are reused based on antenna configuration / PA configuration. That is, one or more parameter sets (e.g., numbers, indices, or other identifiers) can be reused for some antenna configurations. For example, the parameter set of an NLEST-RS associated with a specific PA configuration / antenna configuration can be reused for different PA configurations / antenna configurations. More specifically, a set of parameter sets associated with a PA configuration can be assigned or otherwise associated with a corresponding set of antenna configurations. These parameter sets can then be reused for the same set of antenna configurations, but with different PA configurations. Other reuse techniques can also be implemented. Accordingly, transmitting and receiving equipment can use a dynamic parameter set scheme for NLEST-RS transmission.

[0009] A method for wireless communication at a receiving device is described. The method may include: receiving, from a transmitting device, a CHEST-RS transmitted over a bandwidth associated with a PA configuration of the transmitting device; determining a channel estimation measurement associated with the PA configuration based on the CHEST-RS; receiving, from the transmitting device, an NLEST-RS transmitted over a subset of the bandwidth associated with the PA configuration; determining a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying a nonlinear response of the PA configuration; and communicating with the transmitting device based on the channel estimation measurement and the nonlinear response of the PA configuration.

[0010] An apparatus for wireless communication at a receiving device is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. These instructions are executable by the processor to cause the apparatus to: receive, from a transmitting device, CHEST-RS transmitted over a bandwidth associated with a PA configuration of the transmitting device; determine a channel estimation measurement associated with the PA configuration based on the CHEST-RS; receive, from the transmitting device, NLEST-RS transmitted over a subset of the bandwidth associated with the PA configuration; determine a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying a nonlinear response of the PA configuration; and communicate with the transmitting device based on the channel estimation measurement and the nonlinear response of the PA configuration.

[0011] Another apparatus for wireless communication at a receiving device is described. The apparatus may include: means for receiving, from the transmitting device, CHEST-RS transmitted over a bandwidth associated with a PA configuration of the transmitting device; means for determining a channel estimation measurement associated with the PA configuration based on the CHEST-RS; means for receiving, from the transmitting device, NLEST-RS transmitted over a subset of the bandwidth associated with the PA configuration; means for determining, based on the NLEST-RS and the CHEST-RS, a nonlinear estimation measurement identifying a nonlinear response of the PA configuration; and means for communicating with the transmitting device based on the channel estimation measurement and the nonlinear response of the PA configuration.

[0012] A non-transient computer-readable medium is described, storing code for wireless communication at a receiving device. The code may include instructions executable by a processor to: receive, from a transmitting device, a CHEST-RS transmitted over a bandwidth associated with a PA configuration of the transmitting device; determine a channel estimation measurement associated with the PA configuration based on the CHEST-RS; receive, from the transmitting device, an NLEST-RS transmitted over a subset of the bandwidth associated with the PA configuration; determine a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying a nonlinear response of the PA configuration; and communicate with the transmitting device based on the channel estimation measurement and the nonlinear response of the PA configuration.

[0013] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for receiving a signal identifying a resource configuration for the CHEST-RS, the NLEST-RS or both, wherein the CHEST-RS and the NLEST-RS may receive the signal identifying the resource configuration based on receiving the signal, the resource configuration for the CHEST-RS and the resource configuration for the NLEST-RS including the same resource configuration or different resource configurations.

[0014] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for receiving one or more instances of the CHEST-RS according to a repetition pattern of the CHEST-RS, wherein the channel estimation measurement may be based on receiving the one or more instances of the CHEST-RS.

[0015] Some examples of the methods, apparatus (devices) and nontransient computer-readable media described herein may further include operations, features, means or instructions for receiving one or more instances of the NLEST-RS according to a repeating pattern of the NLEST-RS, wherein the nonlinear estimation measurement may be based on the one or more instances of the NLEST-RS.

[0016] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for identifying the antenna configuration of the CHEST-RS, wherein the channel estimation measurement may be for the antenna configuration and the PA configuration.

[0017] Some examples of the methods, apparatus (devices) and nontransient computer-readable media described herein may further include operations, features, means or instructions for identifying the antenna configuration of the NLEST-RS, wherein the nonlinear estimation measurement may be for both the antenna configuration and the PA configuration.

[0018] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for receiving the CHEST-RS during a first symbol period and receiving the NLEST-RS during a second symbol period following the first symbol period.

[0019] Some examples of the methods, apparatus (devices) and nontransient computer-readable media described herein may further include operations, features, means or instructions for receiving one or more instances of the CHEST-RS and one or more instances of the nonlinear reference signal according to periodic scheduling, semi-persistent scheduling, aperiodicity, or any combination thereof.

[0020] A method for wireless communication at a transmitting device is described. The method may include: identifying CHEST-RS and NLEST-RS associated with a PA configuration of the transmitting device; transmitting the CHEST-RS transmitted over a bandwidth to a receiving device; transmitting the NLEST-RS transmitted over a subset of the bandwidth to the receiving device; and communicating with the receiving device based on: channel estimation measurements based on the CHEST-RS and a nonlinear response of the PA configuration based on the NLEST-RS and the CHEST-RS.

[0021] An apparatus for wireless communication at a transmitting device is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. These instructions are executable by the processor to cause the apparatus to: identify CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device; transmit the CHEST-RS transmitted over a bandwidth to a receiving device; transmit the NLEST-RS transmitted over a subset of the bandwidth to the receiving device; and communicate with the receiving device based on: channel estimation measurements based on the CHEST-RS and a nonlinear response of the PA configuration based on the NLEST-RS and the CHEST-RS.

[0022] Another apparatus for wireless communication at a transmitting device is described. The apparatus may include: means for identifying CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device; means for transmitting the CHEST-RS transmitted over a bandwidth to a receiving device; means for transmitting the NLEST-RS transmitted over a subset of the bandwidth to the receiving device; and means for communicating with the receiving device based on: channel estimation measurements based on the CHEST-RS and a nonlinear response of the PA configuration based on the NLEST-RS and the CHEST-RS.

[0023] A non-transient computer-readable medium is described, storing code for wireless communication at a transmitting device. The code may include instructions executable by a processor to: identify CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device; transmit the CHEST-RS transmitted over a bandwidth to a receiving device; transmit the NLEST-RS transmitted over a subset of the bandwidth to the receiving device; and communicate with the receiving device based on: channel estimation measurements based on the CHEST-RS and a nonlinear response of the PA configuration based on the NLEST-RS and the CHEST-RS.

[0024] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for transmitting a signal identifying a resource configuration for the CHEST-RS, the NLEST-RS or both, wherein the CHEST-RS and the NLEST-RS may be transmitted based on the signal identifying the resource configuration, the resource configuration for the CHEST-RS and the resource configuration for the NLEST-RS including the same resource configuration or different resource configurations.

[0025] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for transmitting one or more instances of the CHEST-RS according to a repeating pattern of the CHEST-RS, wherein the channel estimation measurement may be based on the transmission of the one or more instances of the CHEST-RS.

[0026] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for selecting a transmit power level to be boosted for the CHEST-RS.

[0027] Some examples of the methods, apparatus (devices) and nontransient computer-readable media described herein may further include operations, features, means or instructions for transmitting one or more instances of the NLEST-RS according to a repeating pattern of the NLEST-RS, wherein the nonlinear estimation measurement may be based on the one or more instances of the NLEST-RS.

[0028] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for selecting a boosted transmit power level for the CHEST-RS.

[0029] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for identifying the antenna configuration of the CHEST-RS, wherein the channel estimation measurement may be for the antenna configuration and the PA configuration.

[0030] Some examples of the methods, apparatus (devices) and nontransient computer-readable media described herein may further include operations, features, means or instructions for identifying the antenna configuration of the NLEST-RS, wherein the nonlinear estimation measurement may be for both the antenna configuration and the PA configuration.

[0031] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for transmitting the CHEST-RS during a first symbol and transmitting the NLEST-RS during a second symbol following the first symbol.

[0032] Some examples of the methods, apparatus (devices) and nontransient computer-readable media described herein may further include operations, features, means or instructions for transmitting one or more instances of the CHEST-RS and one or more instances of the nonlinear reference signal according to periodic scheduling, semi-persistent scheduling, aperiodicity, or any combination thereof.

[0033] A method for wireless communication at a receiving device is described. The method may include: determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from a transmitting device based on one or more antenna configurations, each NLEST-RS associated with a corresponding antenna configuration and a PA configuration; receiving NLEST-RS associated with the PA configuration of the transmitting device from the transmitting device; determining a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being used to communicate with the transmitting device based on the NLEST-RS and the parameter set, and based on the nonlinear response of the PA configuration.

[0034] An apparatus for wireless communication at a receiving device is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. These instructions are executable by the processor to cause the apparatus to: determine a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from a transmitting device, each NLEST-RS associated with a corresponding antenna configuration and a PA configuration, based on one or more antenna configurations; receive NLEST-RS associated with the PA configuration of the transmitting device from the transmitting device; determine a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set, and to communicate with the transmitting device based on the nonlinear response of the PA configuration.

[0035] Another apparatus for wireless communication at a receiving device is described. The apparatus may include: means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from a transmitting device based on one or more antenna configurations, each NLEST-RS associated with a corresponding antenna configuration and a PA configuration; means for receiving from the transmitting device the NLEST-RS associated with the PA configuration of the transmitting device; means for determining a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set; and means for communicating with the transmitting device based on the nonlinear response of the PA configuration.

[0036] A non-transient computer-readable medium is described, storing code for wireless communication at a receiving device. The code may include instructions executable by a processor to: determine a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from a transmitting device, each NLEST-RS associated with a corresponding antenna configuration and a PA configuration, based on one or more antenna configurations; receive NLEST-RS associated with the PA configuration of the transmitting device from the transmitting device; determine a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set, and communicate with the transmitting device based on the nonlinear response of the PA configuration.

[0037] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for: determining that the transmission of the NLEST-RS may switch from a first multiplexing technique to a second multiplexing technique among one or more multiplexing techniques, and receiving the NLEST-RS according to the second multiplexing technique using an index number associated with the NLEST-RS used for the first multiplexing technique based on the dynamic parameter set scheme.

[0038] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for identifying the index number associated with the NLEST-RS for the first multiplexing technique based on the dynamic parameter set scheme, wherein the NLEST-RS may be received according to the second multiplexing technique based on the index number.

[0039] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the first multiplexing technique includes frequency division multiplexing and the second multiplexing technique includes time division multiplexing.

[0040] In some examples of the methods, apparatuses, and non-transient computer-readable media described herein, the first multiplexing technique and the second multiplexing technique each include a corresponding time-division multiplexing technique.

[0041] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the one or more multiplexing techniques include frequency division multiplexing, time division multiplexing, code division multiplexing, or any combination thereof.

[0042] A method for wireless communication at a transmitting device is described. The method may include: determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted to a receiving device based on one or more antenna configurations, each NLEST-RS being associated with a corresponding antenna configuration and a PA configuration; transmitting the NLEST-RS associated with the PA configuration of the transmitting device to the receiving device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set, and communicating with the receiving device based on the nonlinear response of the PA configuration.

[0043] An apparatus for wireless communication at a transmitting device is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. These instructions are executable by the processor to cause the apparatus to: determine, based on one or more antenna configurations, a dynamic parameter set scheme associated with one or more NLEST-RSs to be transmitted to a receiving device, each NLEST-RS associated with a corresponding antenna configuration and a PA configuration; transmit the NLEST-RS associated with the PA configuration of the transmitting device to the receiving device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration is based on the NLEST-RS and the parameter set, and communicate with the receiving device based on the nonlinear response of the PA configuration.

[0044] Another apparatus for wireless communication at a transmitting device is described. The apparatus may include: means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted to a receiving device based on one or more antenna configurations, each NLEST-RS associated with a corresponding antenna configuration and a PA configuration; means for transmitting the NLEST-RS associated with the PA configuration of the transmitting device to the receiving device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set; and means for communicating with the receiving device based on the nonlinear response of the PA configuration.

[0045] A non-transient computer-readable medium is described, storing code for wireless communication at a transmitting device. The code may include instructions executable by a processor to: determine a dynamic parameter set scheme associated with one or more NLEST-RSs to be transmitted to a receiving device based on one or more antenna configurations, each NLEST-RS associated with a corresponding antenna configuration and a PA configuration; transmit the NLEST-RS associated with the PA configuration of the transmitting device to the receiving device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration is based on the NLEST-RS and the parameter set, and communicate with the receiving device based on the nonlinear response of the PA configuration.

[0046] Examples of methods, apparatus (devices) and nontransient computer-readable media described herein may further include operations, features, means or instructions for: determining that the transmission of the NLEST-RS may have switched from a first multiplexing technique to a second multiplexing technique in one or more multiplexing techniques, and transmitting the NLEST-RS according to the second multiplexing technique using an index number associated with the NLEST-RS used for the first multiplexing technique based on the dynamic parameter set scheme.

[0047] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for identifying the index number associated with the NLEST-RS for the first multiplexing technique based on the dynamic parameter set scheme, wherein the NLEST-RS may be transmitted according to the second multiplexing technique based on the index number.

[0048] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the first multiplexing technique includes frequency division multiplexing and the second multiplexing technique includes time division multiplexing.

[0049] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the first multiplexing technique and the second multiplexing technique each include a corresponding time-division multiplexing technique.

[0050] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the one or more multiplexing techniques include frequency division multiplexing, time division multiplexing, code division multiplexing, or any combination thereof. Brief description of the attached diagram

[0052] Figure 1 Examples of wireless communication systems designed with nonlinear reference signals according to various aspects of this disclosure are explained.

[0053] Figure 2 Examples of wireless communication systems designed with nonlinear reference signals according to various aspects of this disclosure are explained.

[0054] Figures 3A to 3C Examples of resource configurations supporting the design of nonlinear reference signals according to various aspects of this disclosure are explained.

[0055] Figures 4A to 4B Examples of resource configurations supporting the design of nonlinear reference signals according to various aspects of this disclosure are explained.

[0056] Figure 5 Examples of resource configurations supporting the design of nonlinear reference signals according to various aspects of this disclosure are explained.

[0057] Figure 6 Examples of resource configurations supporting the design of nonlinear reference signals according to various aspects of this disclosure are explained.

[0058] Figures 7A to 7C Examples of resource configurations supporting the design of nonlinear reference signals according to various aspects of this disclosure are explained.

[0059] Figure 8 Examples of resource configurations supporting the design of nonlinear reference signals according to various aspects of this disclosure are explained.

[0060] Figure 9 Examples of resource configurations supporting the design of nonlinear reference signals according to various aspects of this disclosure are explained.

[0061] Figure 10 Examples of resource configurations supporting the design of nonlinear reference signals according to various aspects of this disclosure are explained.

[0062] Figure 11 and Figure 12 A block diagram of a device designed to support a nonlinear reference signal according to various aspects of this disclosure is shown.

[0063] Figure 13 A block diagram of a communication manager designed to support nonlinear reference signals according to various aspects of this disclosure is shown.

[0064] Figure 14 A diagram of a system including a UE designed to support a nonlinear reference signal, according to various aspects of this disclosure, is shown.

[0065] Figure 15 A diagram of a system including a base station designed to support nonlinear reference signals, according to various aspects of this disclosure, is shown.

[0066] Figure 16 and Figure 17 A block diagram of a device designed to support a nonlinear reference signal according to various aspects of this disclosure is shown.

[0067] Figure 18 A block diagram of a communication manager designed to support nonlinear reference signals according to various aspects of this disclosure is shown.

[0068] Figure 19 A diagram of a system including a UE designed to support a nonlinear reference signal, according to various aspects of this disclosure, is shown.

[0069] Figure 20 A diagram of a system including a base station designed to support nonlinear reference signals, according to various aspects of this disclosure, is shown.

[0070] Figures 21 to 26 A flowchart illustrating a method for designing a nonlinear reference signal according to various aspects of this disclosure is shown.

[0071] Detailed description

[0072] Some wireless communication systems attempt to use different methods to estimate the nonlinear response of a power amplifier (PA). Nonlinear response generally refers to the nonlinear portion of the response (such as an ascending curve), such as the PA's transmission from the start until it reaches its full transmit power level (e.g., saturation power). From the perspective of the receiver equipment (e.g., base station and / or user equipment (UE)), the nonlinear response can be difficult to quantify between the static front-end response of the transmitting equipment (e.g., linear and nonlinear components) and the dynamic response of the channel (e.g., linear components without nonlinear components). Among some other approaches to address this problem, the transmitting equipment (e.g., base station and / or UE) can use pre-distortion compensation (e.g., nonlinear correction) based on reports from the receiver equipment. However, these reports are based on different channel responses and therefore provide little insight into the nonlinear portion of the PA response curve.

[0073] Additionally, simply adding a Nonlinear Estimation Reference Signal (NLEST-RS) to the wireless medium to support nonlinear response estimation can be problematic for some wireless networks. Specifically, each NLEST-RS is based on a specific PA configuration of the transmitting device (e.g., full transmit chain, antenna configuration, beam configuration, antenna ports, etc.). To support so many different PA configurations, multi-layer configurations, etc., the number of NLEST-RSs can be quite substantial. Since each reference signal can typically be associated with a fixed number, index, or other identifier, the number of indices required to configure NLEST-RS can be considerable. This can result in significant over-the-air overhead signaling, processing, storage, etc., at the transmitting or receiving device, or both. Such overhead within a wireless network is difficult to manage and can significantly and adversely impact performance, and in some cases may even be impossible.

[0074] The aspects of this disclosure are initially described in the context of wireless communication systems. Generally, the described techniques provide various mechanisms to support wireless communication in wireless networks. The aspects of the described techniques support various mechanisms for nonlinear reference signals (NL-RS) used to measure or quantify the nonlinear response of a PA configuration of a transmitting device (such as a base station and / or UE). The transmitting device can configure, for example, channel estimation reference signals (CHEST-RS) and NLEST-RS for transmission to a receiving device. The receiving device can receive CHEST-RS and NLEST-RS signals, along with other information, and use these signals to measure the nonlinear response for a corresponding transmitting device (e.g., a base station) PA configuration. For example, the receiving device can measure, identify, quantize, or otherwise determine channel estimation measurements (e.g., based on CHEST-RS) and nonlinear estimation measurements (e.g., based on NLEST-RS) for a particular PA configuration. The receiving device can then communicate with the transmitting device based on the channel response (e.g., based on CHEST-RS) and the nonlinear response (e.g., based on NLEST-RS). For example, the receiving device may transmit or otherwise provide feedback information to the transmitting device, indicating at least some aspects of channel estimation measurements or nonlinear estimation measurements, or both, as well as other aspects. The transmitting device may perform mitigation of interference (such as noise) introduced into the channel associated with the nonlinear response of the transmitting device. The transmitting device may configure the receiving device with CHEST-RS and NLEST-RS resources, which may be the same or different between the two reference signals.

[0075] To avoid excessive indexes associated with NLEST-RS (e.g., especially when each NLEST-RS is associated with a different antenna configuration), base stations can employ a dynamic parameter set scheme for NLEST-RS in some examples. For instance, a numbering scheme can include some indices that are reused based on antenna configuration / PA configuration. That is, one or more parameter sets (e.g., numbers, indices, or other identifiers) can be reused for some antenna configurations. For example, the parameter set of an NLEST-RS associated with a specific PA configuration / antenna configuration can be reused for different PA configurations / antenna configurations. More specifically, a set of parameter sets associated with a PA configuration can be assigned or otherwise associated with a corresponding set of antenna configurations. These parameter sets can then be reused for the same set of antenna configurations, but with different PA configurations. Other reuse techniques can also be implemented. Accordingly, transmitting and receiving equipment can use a dynamic parameter set scheme for NLEST-RS transmission.

[0076] Various aspects of this disclosure will be further explained and described with reference to diagrams of apparatus (devices), systems, and flowcharts related to the design of nonlinear reference signals.

[0077] Figure 1 Examples of a wireless communication system 100 supporting nonlinear reference signal design according to various aspects of this disclosure are described. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-APro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low latency communication, communication with low-cost and low-complexity devices, or any combination thereof.

[0078] Base station 105 can be distributed across a geographical area to form wireless communication system 100, and can be different types of devices or devices with different capabilities. Base station 105 and UE 115 can communicate wirelessly via one or more communication links 125. Each base station 105 can provide a coverage area 110, and UE 115 and base station 105 can establish one or more communication links 125 on the coverage area 110. Coverage area 110 can be an example of a geographical area over which base station 105 and UE 115 can support signal communication according to one or more radio access technologies.

[0079] Each UE 115 can be distributed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 can be stationary or mobile, or stationary and mobile at different times. Each UE 115 can be a different type of device or a device with different capabilities. Figure 1 The document describes some example UE 115s. The UE 115 described herein can communicate with various types of devices, such as other UE 115s, base station 105, or network equipment (e.g., core network nodes, relay equipment, integrated access and backhaul (IAB) nodes, or other network equipment). Figure 1 As shown in the image.

[0080] Each base station 105 may communicate with the core network 130, or with each other, or both. For example, base station 105 may interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base stations 105 may communicate with each other directly (e.g., directly between base stations 105), indirectly (e.g., via the core network 130), or directly and indirectly on backhaul links 120 (e.g., via X2, Xn, or other interfaces). In some examples, backhaul link 120 may be or include one or more radio links.

[0081] One or more of the base stations 105 described herein may include, or may be referred to by those skilled in the art as, base transceiver station, radio base station, access point, radio transceiver, B node, evolved B node (eNB), next-generation B node or gigabit B node (any of which may be referred to as gNB), home B node, home evolved B node, or other suitable terms.

[0082] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or any other suitable term, wherein "device" may also be referred to as a cell, station, terminal, or client, etc. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0083] The UE 115 described herein can communicate with various types of devices, such as other UEs 115 that sometimes act as relays, as well as base station 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, relay base stations, etc. Figure 1 As shown in the image.

[0084] UE 115 and base station 105 can wirelessly communicate with each other via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of the radio spectrum band (e.g., a bandwidth portion (BWP)) operating according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling coordinating carrier operation, user data, or other signaling. Wireless communication system 100 may support communication with UE 115 using carrier aggregation or multi-carrier operation. UE 115 may be configured to have multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation can be used in conjunction with frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0085] In some examples (e.g., in a carrier aggregation configuration), the carrier may also have acquisition signaling or control signaling to coordinate the operation of other carriers. The carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located according to a channel grid for discovery by UE 115. The carrier may operate in an autonomous mode in which initial acquisition and connection can be performed by UE 115 via that carrier, or in a non-autonomous mode in which the carrier may connect to carriers anchored using different carriers (e.g., different carriers of the same or different radio access technologies).

[0086] The communication link 125 shown in the wireless communication system 100 may include uplink transmission from UE 115 to base station 105, or downlink transmission from base station 105 to UE 115. The carrier may carry downlink or uplink communication (e.g., in FDD mode), or may be configured to carry both downlink and uplink communication (e.g., in TDD mode).

[0087] A carrier may be associated with a specific bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one of several defined bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz) of a carrier for a particular radio access technology. Devices of the wireless communication system 100 (e.g., base station 105, UE 115, or both) may have a hardware configuration that supports communication over a specific carrier bandwidth, or may be configurable to support communication over a single carrier bandwidth within a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate over a portion (e.g., a subband, BWP) or all of the carrier bandwidth.

[0088] The signal waveform transmitted on the carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing MCM, a resource element may include a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the code rate of the modulation scheme, or both). Thus, the more resource elements the UE 115 receives and the higher the order of the modulation scheme, the higher the data rate the UE 115 can achieve. Wireless communication resources can refer to a combination of radio frequency spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and using multiple spatial layers can further improve the data rate or data integrity of communication with the UE 115.

[0089] One or more parameter designs for a carrier can be supported, where the parameter design may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier can be divided into one or more BWPs with the same or different parameter designs. In some examples, UE 115 can be configured with multiple BWPs. In some examples, a single BWP for a carrier can be active at a given time, and communication for UE 115 can be limited to one or more active BWPs.

[0090] The time interval of base station 105 or UE 115 can be expressed as a multiple of a basic time unit, such as the sampling period T. s =1 / (Δf) max ·N f ) seconds, where Δf max This can represent the maximum supported subcarrier spacing, while Nf This can represent the maximum supported Discrete Fourier Transform (DFT) size. The time interval of the communication resources can be organized according to radio frames, each with a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).

[0091] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may (e.g., in the time domain) be divided into subframes, and each subframe may be further divided into several time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include several symbol periods (e.g., depending on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple mini-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N) symbols. f (Number) sampling periods. The duration of a symbol period can depend on the subcarrier interval or the operating frequency band.

[0092] A subframe, time slot, mini-slot, or symbol can be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and can be referred to as a transmission time interval (TTI). In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) can be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)).

[0093] Physical channels can be multiplexed on a carrier using various techniques. Physical control channels and physical data channels can be multiplexed on a downlink carrier, for example, using one or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for physical control channels can be defined by the number of symbol periods and can extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) can be configured for a set of UEs 115. For example, one or more of the UEs 115 can monitor or search control regions for control information based on one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for control channel candidates can refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information in a control information format having a given payload size. The search space set may include a common search space set configured to send control information to multiple UEs 115 and a UE-specific search space set configured to send control information to a specific UE 115.

[0094] Each base station 105 may provide communication coverage via one or more cells (e.g., macrocells, small cells, hotspots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used to communicate with base station 105 (e.g., on a carrier) and may be associated with an identifier used to distinguish adjacent cells (e.g., Physical Cell Identifier (PCID), Virtual Cell Identifier (VCID), or others). In some examples, a cell may also refer to a geographic coverage area 110 or a portion of geographic coverage area 110 (e.g., a sector) on which a logical communication entity operates. The extent of such cells may vary from smaller areas (e.g., structures, subsets of structures) to larger areas depending on various factors (such as the capabilities of base station 105). For example, a cell may be or include buildings, subsets of buildings, or external space between or overlapping geographic coverage areas 110, among other examples.

[0095] Macrocells typically cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access for UEs 115 that have service subscriptions with a network provider supporting the macrocell. Small cells may be associated with a lower-power base station 105 (compared to macrocells) and may operate in the same or different (e.g., licensed or unlicensed) frequency bands as macrocells. Small cells may provide unrestricted access to UEs 115 that have service subscriptions with a network provider, or may provide restricted access to UEs 115 associated with the small cell (e.g., UEs 115 in a Closed Subscriber Group (CSG), or UEs 115 associated with a user in a home or office). Base station 105 may support one or more cells and may also support communication on one or more cells using one or more component carriers.

[0096] In some examples, a carrier can support multiple cells and can be configured with different cells based on different protocol types that can provide access for different types of devices (e.g., MTC, Narrowband IoT (NB-IoT), Enhanced Mobile Broadband (eMBB)).

[0097] In some examples, base station 105 may be mobile, and thus provide communication coverage to mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. Wireless communication system 100 may include, for example, a heterogeneous network, in which different types of base stations 105 use the same or different radio access technologies to provide coverage to various geographic coverage areas 110.

[0098] The wireless communication system 100 can support synchronous or asynchronous operation. For synchronous operation, base stations 105 can have similar frame timing, and transmissions from different base stations 105 can be approximately time-aligned. For asynchronous operation, base stations 105 can have different frame timing, and transmissions from different base stations 105 may not be time-aligned in some examples. The techniques described herein can be used for both synchronous and asynchronous operation.

[0099] Some UE 115 devices (such as MTC or IoT devices) can be low-cost or low-complexity devices and can provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC can refer to data communication technologies that allow devices to communicate with each other or with base station 105 without human intervention. In some examples, M2M communication or MTC may include communication from devices that have integrated sensors or meters to measure or capture information and relay such information to a central server or application that uses the information or presents it to people interacting with the application. Some UE 115 devices may be designed to collect information or automate the behavior of machines or other devices. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wilderness survival monitoring, weather and geographic event monitoring, queue management and tracking, remote security sensing, physical access control, and transaction-based commercial toll collection.

[0100] Some UEs 115 can be configured to operate in reduced-power modes, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception but not simultaneous transmission and reception). In some examples, half-duplex communication can be performed at a reduced peak rate. Other power-saving techniques for UEs 115 include entering a power-saving deep sleep mode when not engaged in active communication, operating on limited bandwidth (e.g., according to narrowband communication), or a combination of these techniques. For example, some UEs 115 can be configured to operate using a narrowband protocol type associated with a defined portion or range (e.g., subcarriers or resource block (RB) set) within the carrier, within the carrier's guard band, or outside the carrier.

[0101] Wireless communication system 100 may be configured to support ultra-reliable communication or low latency communication, or various combinations thereof. For example, wireless communication system 100 may be configured to support ultra-reliable low latency communication (URLLC) or mission-critical communication. UE 115 may be designed to support ultra-reliable, low latency, or mission-critical functions (e.g., mission-critical functions). Ultra-reliable communication may include private or group communication and may be supported by one or more mission-critical services, such as Mission-Critical Talk-to-Talk (MCPTT), Mission-Critical Video (MCVideo), or Mission-Critical Data (MCData)). Support for mission-critical functions may include prioritization of services, and mission-critical services may be used for public safety or general business applications. The terms ultra-reliable, low latency, mission-critical, and ultra-reliable low latency are used interchangeably herein.

[0102] In some examples, UE 115 may also be able to communicate directly with other UE 115 on a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UE 115s utilizing D2D communication may be within the geographic coverage area 110 of base station 105. Other UE 115s in such a group may be outside the geographic coverage area 110 of base station 105 or may be unable to receive transmissions from base station 105 for other reasons. In some examples, groups of UE 115s communicating via D2D communication may utilize a one-to-many (1:M) system, where each UE 115 transmits to every other UE 115 in the group. In some examples, base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between the individual UE 115s without involving base station 105.

[0103] In some systems, the D2D communication link 135 may be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, vehicles may communicate using vehicle-to-vehicle (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these communications. Vehicles may signal information related to traffic conditions, signaling, weather, safety, emergencies, or any other information relevant to the V2X system. In some examples, vehicles in a V2X system may communicate via vehicle-to-network (V2N) communication through one or more network nodes (e.g., base station 105) with roadside infrastructure (such as roadside units), or with the network, or with both.

[0104] Core network 130 provides user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 can be an evolved packet core (EPC) or a 5G core (5GC). The EPC or 5GC may include at least one control plane entity (e.g., a Mobility Management Entity (MME), Access and Mobility Management Function (AMF)) managing access and mobility, and at least one user plane entity (e.g., a Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), or User Plane Function (UPF)) routing packets or interconnecting to external networks. The control plane entity manages non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by base station 105 associated with core network 130. User IP packets can be delivered through the user plane entity, which provides IP address allocation and other functions. The user plane entity may be connected to one or more network operator IP services 150. The IP service 150 may include access to the Internet, intranet, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0105] Some network devices (such as base station 105) may include sub-components, such as access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with each UE 115 through one or more other access network transport entities 145, which may be referred to as a radio headend, smart radio headend, or transmit / receive point (TRP). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio headends and ANCs) or combined into a single network device (e.g., base station 105).

[0106] Wireless communication system 100 can operate using one or more frequency bands, typically in the range of 300 MHz to 300 GHz. Generally, the 300 MHz to 3 GHz band is referred to as a UHF band or decimeter band because the wavelengths range from approximately 1 decimeter to 1 meter. UHF waves can be blocked or redirected by buildings and environmental features, but these waves can penetrate various structures sufficiently for macrocells to provide service to UE 115 located indoors. Compared to transmissions using smaller frequencies and longer waves in the lower HF or VHF portions of the spectrum below 300 MHz, UHF wave transmission can be associated with smaller antennas and shorter ranges (e.g., less than 100 km).

[0107] The wireless communication system 100 can also operate in the ultra-high frequency (SHF) zoning using a frequency band from 3 GHz to 30 GHz (also known as the centimeter band) or in the extremely high frequency (EHF) zoning using a spectrum (e.g., from 30 GHz to 300 GHz) (also known as the millimeter band). In some examples, the wireless communication system 100 can support millimeter-wave (mmW) communication between the UE 115 and the base station 105, and the EHF antennas of the corresponding devices can be smaller and more closely spaced than UHF antennas. In some examples, this can facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may suffer even greater atmospheric attenuation and shorter range than SHF or UHF transmissions. The techniques disclosed herein can be employed across transmissions using one or more different frequency zonings, and the frequency band usage specified across these frequency zonings may vary by country or regulatory authority.

[0108] Wireless communication system 100 may utilize both licensed and unlicensed radio spectrum bands. For example, wireless communication system 100 may employ licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in unlicensed frequency bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band). When operating in unlicensed radio spectrum bands, devices (such as base station 105 and UE 115) may employ carrier sensing for collision detection and avoidance. In some examples, operation in unlicensed frequency bands may be based on carrier aggregation configuration (e.g., LAA) in coordination with component carriers operating in licensed frequency bands. Operation in unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, etc.

[0109] Base station 105 or UE 115 may be equipped with multiple antennas that can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels that can support MIMO operation or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly (such as an antenna tower). In some examples, the antennas or antenna arrays associated with base station 105 may be located in different geographical locations. Base station 105 may have an antenna array with several rows and columns of antenna ports that base station 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted via the antenna ports.

[0110] Base station 105 or UE 115 can use MIMO communication to leverage multipath signal propagation and improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers. This technique is known as spatial multiplexing. For example, a transmitting device may transmit multiple signals via different antennas or different combinations of antennas. Similarly, a receiving device may receive multiple signals via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), where multiple spatial layers are transmitted to the same receiving device; and multi-user MIMO (MU-MIMO), where multiple spatial layers are transmitted to multiple devices.

[0111] Beamforming (also known as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., base station 105, UE 115) to shape or guide an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array, such that some signals propagating relative to a particular orientation of the antenna array experience constructive interference, while others experience destructive interference. Adjustments to the signals transmitted via the antenna elements may include the transmitting or receiving device applying amplitude offset, phase offset, or both to the signals carried via the antenna elements associated with that device. The adjustments associated with each antenna element may be defined by a beamforming weight set associated with a particular orientation (e.g., the antenna array relative to the transmitting or receiving device, or relative to some other orientation).

[0112] Base station 105 or UE 115 may use beamsweeping techniques as part of beamforming operations. For example, base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by base station 105 in different directions. For example, base station 105 may transmit signals according to different beamforming weight sets associated with different transmission directions. Transmissions in different beam directions may be used (e.g., by the transmitting device (such as base station 105) or the receiving device (such as UE 115)) to identify the beam direction that base station 105 will use for later transmission or reception.

[0113] Some signals (such as data signals associated with a specific receiving device) may be transmitted by base station 105 in a single beam direction (e.g., the direction associated with the receiving device (such as UE 115)). In some examples, the beam direction associated with transmission along a single beam direction may be determined based on the signals transmitted in one or more beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signals received by UE 115 with the highest signal quality or other acceptable signal quality.

[0114] In some examples, transmissions performed by a device (e.g., by base station 105 or UE 115) may be executed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate combined beams for transmission (e.g., from base station 105 to UE 115). UE 115 may report feedback indicating precoding weights for one or more beam directions, and this feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. Base station 105 may transmit reference signals that may be precoded or unprecoded (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)). UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel type codebook, linear combination type codebook, port selection type codebook). Although these techniques are described with reference to signals transmitted by base station 105 in one or more directions, UE 115 may use similar techniques to transmit signals multiple times in different directions (e.g., to identify the beam direction used by UE 115 for subsequent transmission or reception) or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0115] A receiver device (e.g., UE 115) may attempt multiple receive configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from base station 105. For example, the receiver device may attempt multiple receive directions by: receiving via different antenna subarrays; processing received signals according to different antenna subarrays; receiving according to different sets of receive beamforming weights applied to signals received at multiple antenna elements of the antenna array (e.g., different directional listening weight sets); or processing received signals according to different sets of receive beamforming weights applied to signals received at multiple antenna elements of the antenna array, any of which may be referred to as "listening" according to different receive configurations or receive directions. In some examples, the receiver device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal). The single receive configuration may be aligned on a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0116] The wireless communication system 100 can be a packet-based network operating according to a layered protocol stack. In the user plane, communication at the bearer or Packet Data Convergence Protocol (PDCP) layer can be IP-based. The Radio Link Control (RLC) layer performs packet segmentation and reassembly for communication on logical channels. The Media Access Control (MAC) layer performs priority handling and multiplexes logical channels into transport channels. The MAC layer can also use error detection, error correction, or both to support MAC layer retransmissions to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer can provide the establishment, configuration, and maintenance of RRC connections between the UE 115 and the base station 105 or core network 130 that support user plane data radio bearers. At the physical layer, transport channels can be mapped to physical channels.

[0117] UE 115 and base station 105 can support data retransmission to increase the likelihood of successful data reception. Hybrid Automatic Repeat Request (HARQ) feedback is a technique used to increase the likelihood of correctly receiving data on communication link 125. HARQ may include a combination of error detection (e.g., using Cyclic Redundancy Check (CRC)), forward error correction (FEC), and retransmission (e.g., Automatic Repeat Request (ARQ)). HARQ can improve MAC layer throughput in poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, the device may support simultaneous time-slot HARQ feedback, where the device can provide HARQ feedback in a specific time slot for data received in previous symbols within that time slot. In other cases, the device may provide HARQ feedback in subsequent time slots or according to a different time interval.

[0118] A receiving device (e.g., UE 115 and / or base station 105) can receive CHEST-RS transmitted over a frequency band from a transmitting device (e.g., UE 115 and / or base station 105), the CHEST-RS being associated with the PA configuration of the transmitting device. The receiving device can determine a channel estimation measurement associated with the PA configuration based at least in part on the CHEST-RS. The receiving device can receive NLEST-RS transmitted over a subset of the frequency band from the transmitting device, the NLEST-RS being associated with the PA configuration. The receiving device can determine a nonlinear estimation measurement associated with the PA configuration based at least in part on the NLEST-RS and CHEST-RS, the nonlinear estimation measurement identifying the nonlinear response of the PA configuration. The receiving device can communicate with the transmitting device based at least in part on the channel estimation measurement and the nonlinear response of the PA configuration.

[0119] The transmitting device (e.g., UE 115 and / or base station 105) can identify the CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device. The transmitting device can transmit the CHEST-RS transmitted over a frequency band to the receiving device. The transmitting device can transmit the NLEST-RS transmitted over a subset of the frequency band to the receiving device. The transmitting device can communicate with the receiving device based at least in part on channel estimation measurements based on CHEST-RS and nonlinear responses of the PA configuration based on NLEST-RS and CHEST-RS.

[0120] The receiving device (e.g., UE 115 and / or base station 105) can determine a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from the transmitting device based on corresponding antenna configurations (one or more), each NLEST-RS being associated with a corresponding antenna configuration and PA configuration. The receiving device can receive NLEST-RS associated with the PA configuration of the transmitting device from the transmitting device. The receiving device can determine the parameter set associated with the NLEST-RS based at least in part on the dynamic parameter set scheme and the nonlinear response of the PA configuration, the nonlinear response of which is at least in part based on the NLEST-RS and the parameter set. The receiving device can communicate with the transmitting device based at least in part on the nonlinear response of the PA configuration.

[0121] A transmitting device (e.g., UE 115 and / or base station 105) can determine a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted to a receiving device based on one or more corresponding antenna configurations, each NLEST-RS being associated with a corresponding antenna configuration and PA configuration. The transmitting device can transmit the NLEST-RS associated with its PA configuration to the receiving device, wherein the parameter set associated with the NLEST-RS is at least partially based on the dynamic parameter set scheme and the nonlinear response of the PA configuration, which is at least partially based on the NLEST-RS and the parameter set. The transmitting device can communicate with the receiving device based at least partially on the nonlinear response of the PA configuration.

[0122] Figure 2 Examples of a wireless communication system 200 supporting nonlinear reference signal design and communication according to various aspects of this disclosure are explained. The wireless communication system 200 may implement aspects of the wireless communication system 100 or may be implemented by aspects of the wireless communication system 100. The wireless communication system 200 may include a base station 205 and / or a UE 210, which may be examples of the corresponding devices described herein.

[0123] The techniques described herein are generally discussed with reference to a base station (such as base station 205) acting as a transmitting device and a UE (such as UE 210) acting as a receiving device. However, it should be understood that the described techniques can be implemented to and are therefore equally applicable to a UE acting as a transmitting device and a base station acting as a receiving device. Therefore, the examples discussed herein are not limited to base stations acting as transmitting devices and UEs acting as receiving devices.

[0124] Wireless communication systems sometimes use various reference signal types, each serving one or more specific purposes. For example, a Channel State Information Reference Signal (CSI-RS) can be used for Channel State Information (CSI) acquisition and beam management, such as to measure downlink channel performance. A Demodulation Reference Signal (DMRS) can be used to support demodulation of accompanying transmissions (e.g., PDSCH, PUSCH, etc.). A Phase Tracking Reference Signal (PTRS) can be used to track phase and / or frequency within a wireless network, for example, as phase noise tends to increase at higher operating frequencies. A Probe Reference Signal (SRS) can be used by a device (e.g., such as UE 210) to probe uplink channels to determine the performance characteristics of those uplink channels. However, some functions associated with wireless communication are not supported by various reference signal designs. For example, various reference signal designs do not provide mechanisms for quantizing and / or mitigating the nonlinear response of the PA configuration for transmitting devices (such as base station 205 and / or UE 210).

[0125] Figure 2 The example PA response 215 is explained below. PA response 215 is plotted on the horizontal axis to show the input power (P) of the PA. 输入 And the output power of PA (P) is shown on the vertical axis. 输出 In region p1, the input power of the PA can increase linearly through this region until p2. The region between p1 and p2 can generally be linear because an increase in the input power of the PA can lead to a corresponding (e.g., linear) increase in the output power of the PA. As the input power continues to increase in the region between p2 and p3, the PA response 215 can become nonlinear because an increase in the input power of the PA can lead to a corresponding nonlinear increase in the output power of the PA until the PA reaches saturation (P). Sat The output power becomes flat. That is, an increase in input power X can correspond to an increase in output power Y, where Y may differ from X. Accordingly, the PA configuration of the transmitting device can include both linear and nonlinear components, each of which affects channel performance, interference, etc., at least to some extent.

[0126] Several other wireless communication systems attempt to provide PA configuration nonlinear response estimates for coverage enhancement. These different approaches can involve two methods—digital post-distortion (DPoD) or over-the-air digital predistortion (OTA-DPD)—both implemented at the transmitter equipment. Because the transmitter equipment contains nonlinear components, such as high-power amplifiers (HPAs) / PAs with finite linear dynamic range (DR), this can distort the transmitted signal due to peak-to-average power ratio (PAPR). Nonlinear distortion can introduce in-band distortion, which affects link performance in the form of mutual information and / or error vector magnitude (EVM). Nonlinear distortion can also introduce out-of-band distortion, which can define the amount of adjacent channel interference (ACI). ACI generally corresponds to the degree to which adjacent channels are "contaminated" by the transmitted signal. To avoid such distortion, power backoff can be introduced, but this approach has its own limitations. For example, higher power backoff can result in lower power efficiency with respect to the transmitter equipment and lower power being transmitted on the channel. A complementary approach to power backoff is the use of a digital predistorter (DPD) in the digital front-end of the transmitter. Using a power-dissipative (DPD) circuit, the amount of distortion is kept at a target level while power back-off is reduced as little as possible, thereby improving power amplifier (PA) efficiency. However, DPD operation typically requires signal sensing at the radio frequency (RF) circuitry. For example, this approach usually requires receiving and measuring the transmitted signals from all PAs to perform nonlinear estimation.

[0127] However, in some other wireless communication systems, base stations may use a very large number of transmit antenna arrays (e.g., multiple spatial streams, transmit ports, beamforming configurations, antenna ports, etc.), where the cost of these feedback links is very high, and in some examples, impractical. For example, some RF architectures emulate precoding and / or beamforming, which can affect the PA response. Accordingly, the receiver equipment will be configured to depend on the response of the transmit beam (or other spatial stream) used for transmission.

[0128] Accordingly, in such wireless communication systems, nonlinear compensation can be attempted by estimating the nonlinear response of the transmitter's PA configuration from the receiver side. However, the receiver side needs to know the actual nonlinearity of each PA configuration on the transmitter side. Using DPoD and / or OTA-DPD methods, it is difficult to separate the transmitter's static front-end response (which includes both linear and nonlinear components) from the channel's dynamic response (which includes only linear components). In OTA-DPD, nonlinear correction (e.g., predistortion) occurs in the transmitter based on reports from one or more UEs. When this method is applied to downlink DPD, reports from multiple UEs (e.g., multiple receivers) are combined at the base station, where each report is based on a different channel response. Consequently, the receiver cannot separate the transmitter's static front-end response from the channel response, which may limit or lead to impractical and inappropriate nonlinear compensation.

[0129] Conversely, the described techniques provide various mechanisms to separate the static front-end response of the transmitting device from the channel response, which will improve the performance of DPoD and OTA-DPD technologies, as well as other applicable technologies. The described techniques involve reference signals, including two new reference signals used to estimate and compensate for the nonlinear response of the transmitting device, such as CHEST-RS and NLEST-RS. It should be understood that each transmission of CHEST-RS and / or NLEST-RS can be associated with a specific PA configuration of the transmitting device (generally referred to as base station 205 in this example). Broadly speaking, the PA configuration generally corresponds to a specific configuration of the RF architecture of the transmitting device. For example, the PA configuration can generally correspond to a specific transmit chain (e.g., including oscillators, PAs, filters, switches, etc.), spatial flow, a specific transmission port, a specific beamforming configuration (e.g., antenna array, beamforming direction, beamforming angle, antenna port, etc.), etc.

[0130] In some respects, CHEST-RS and / or NLEST-RS may differ from other reference signals transmitted within the wireless communication system. One difference may include each CHEST-RS and / or NLEST-RS being associated with or otherwise corresponding to a specific PA configuration of the transmitting device. Another difference may include each CHEST-RS and / or NLEST-RS being a pre-coded signal.

[0131] Accordingly, the transmitting device (e.g., base station 205 in this example) can transmit CHEST-RS to the receiving device (e.g., UE 210 in this example). CHEST-RS can be associated with a specific PA configuration of base station 205 (e.g., with a specific transmit chain, using a specific PA within the transmit chain, using a specific spatial flow, a specific beamforming configuration, etc.). UE 210 can receive CHEST-RS and, based on it, measure, identify, or otherwise determine channel estimation measurements associated with the PA configuration. That is, CHEST-RS can correspond to the linear portion of PA response 215 and be used to quantify the channel performance between the transmitting and receiving devices. Accordingly, CHEST-RS can support channel performance estimation or mitigation for the portion of PA response 215 extended between p1 and p2. In some examples, CHEST-RS can be transmitted over the frequency band (e.g., the full bandwidth) used for communication between base station 205 and UE 210.

[0132] The transmitting device (e.g., base station 205 in this example) may subsequently transmit NLEST-RS on a subset of the frequency band used for communication between the transmitting and receiving devices (e.g., on a smaller bandwidth). Again, NLEST-RS may be associated with the same PA configuration associated with CHEST-RS. UE 210 may measure, identify, or otherwise determine nonlinear estimation measurements associated with the PA configuration based on NLEST-RS and CHEST-RS. For example, UE 210 may measure the signal strength of NLEST-RS and / or CHEST-RS over time to determine channel estimation measurements and nonlinear estimation measurements. Broadly speaking, nonlinear estimation measurements can generally identify or correspond to the nonlinear response of the PA configuration. For example, a nonlinear estimation measurement may identify a portion of the nonlinear response 215 extending between p2 and p3.

[0133] In some aspects, UE 210 may transmit to base station 205 a feedback message (e.g., a nonlinear response feedback message) identifying or otherwise indicating channel estimation measurements and nonlinear estimation measurements. That is, UE 210 may transmit or otherwise convey feedback information to base station 205, the feedback information identifying channel estimation measurements and / or nonlinear estimation measurements corresponding to the response curve 215 of base station 205. Accordingly, base station 205 and UE 210 may perform wireless communication based on the channel estimation measurements and the nonlinear response of the PA configuration of base station 205. That is, base station 205 and / or UE 210 may use the DPoD and / or OTA-DPD techniques discussed herein, based on the feedback message, to quantify and / or mitigate distortion or interference caused by transmissions from base station 205 (in this example) using the PA configuration.

[0134] In some aspects, CHEST-RS and / or NLEST-RS can have various resource configurations, which can be pre-configured or preset, and / or can be configured by the base station 205 using signals (e.g., higher-layer signals, RRC signaling, MAC CE, DCI, etc., and / or new signals). That is, the resource configurations for CHEST-RS and / or NLEST-RS can generally identify various resources, configurations, etc., associated with CHEST-RS and / or NLEST-RS transmission. The resources used for CHEST-RS and NLEST-RS can be the same resources or can be different resources (e.g., in the form of subcarriers, time, bandwidth, etc.). UE 210 can use the resource configurations when receiving CHEST-RS and / or NLEST-RS according to the resource configurations (e.g., repetition mode, antenna configuration, timing, etc.). Various aspects of the characteristics of the various resource configurations for CHEST-RS and / or NLEST-RS are shown in Figure 3- Figure 10 discuss.

[0135] Accordingly, aspects of the described technology provide that base station 205 (e.g., the transmitting device in this example) transmits or otherwise communicates CHEST-RS and / or NLEST-RS to UE 210 (e.g., the receiving device in this example) for channel estimation measurements and / or nonlinear estimation measurements. Base station 205 and / or UE 210 can use these measurements to identify or otherwise quantify the PA response curve 215 of base station 205. Accordingly, base station 205 can use OTA-DPD and / or DPoD techniques for predistortion management.

[0136] In some respects, dynamic parameter set schemes can be associated with at least NLEST-RS (although such dynamic parameter set schemes can also be associated with CHEST-RS, which can be collectively referred to as nonlinear reference signals (NL-RS)). As discussed above, transmitting CHEST-RS and / or NLEST-RS for each specific PA configuration of a transmitter device, and for each antenna configuration, each beamforming configuration, each layer, each antenna port, etc., can generally result in a very large number of reference signal transmissions. To distinguish the individual reference signal transmissions, some wireless communication systems associate each reference signal with an individual number, index, or any other identifier (e.g., parameter set). The corresponding number of reference signal numbers or indices required to support each individual PA configuration, beamforming configuration, antenna port / configuration, etc., of a transmitter device would be enormous, and in some examples, impossible to support in some wireless communication systems.

[0137] Accordingly, the dynamic parameter set scheme described herein can be used to reduce the total number of reference signal numbers or indices (e.g., parameter sets) required to support NLEST-RS transmission on a per-PA configuration basis. In some aspects, the dynamic parameter set scheme can be associated with different antenna configurations used by the transmitting device (e.g., base station 205) (e.g., antenna port-layer of DMRS, since each antenna configuration has its own time set and / or frequency resource allocation and configuration under the same NL-RS). Some numbers or indices used for NLEST-RS (and / or CHEST-RS in some examples) transmissions can be reused. For example, this could include reusing numbers or indices for PA configuration / antenna configuration sets for different PA configurations or antenna configuration sets. More specifically, the set of numbers and indices associated with a PA configuration and its corresponding antenna configuration set can then be reused for different PA configurations and their corresponding antenna configuration sets. Other number / index reuse schemes are also possible.

[0138] In another example, the numbering / index reuse rule can be based on the multiplexing technology. For example, some numbers or indices used for NLEST-RS (and / or CHEST-RS in some examples) transmissions can be reused in one multiplexing technology (e.g., FDM) from another multiplexing technology (e.g., TDM), or vice versa (e.g., TDM to FDM). That is, the numbers or indices associated with a specific PA configuration of NLEST-RS transmissions associated with the transmitting device can be reused or reassigned between multiplexing technologies. For example, NLEST-RS (and / or CHEST-RS) signals transmitted on a TDM carrier can use number or index 0. However, NLEST-RS (and / or CHEST-RS) signals transmitted on an FDM carrier can also use number or index 0. However, NLEST-RS with number or index 0 on a TDM carrier can be distinguished from NLEST-RS with number or index 0 on an FDM carrier by the multiplexing technology (e.g., TDM or FDM) associated with the NLEST-RS.

[0139] Accordingly, base station 205 and / or UE 210 (the transmitting and receiving devices in this example) can determine the dynamic parameter set scheme associated with the transmitted NLEST-RS (and / or CHEST-RS) based on the PA configuration / antenna configuration. The dynamic parameter set scheme can be pre-configured (e.g., known prior, previously configured, preset) and / or configured by base station 205. For example, base station 205 can configure the dynamic parameter set scheme periodically (e.g., via broadcast signals transmitted to the UE), semi-periodically, and / or as needed. Base station 205 can use higher-layer signaling, RRC signaling, MAC CE, DCI, or other signaling in some examples to configure the dynamic parameter set scheme for UE 210. The dynamic parameter set scheme can generally reuse one or more NLEST-RS (and / or CHEST-RS) numbers and indices for transmissions using different PA configurations, antenna configurations, multiplexing techniques, etc. NLEST-RS (and / or CHEST-RS) transmissions with the same number or index can be distinguished based on the PA configuration, antenna configuration, multiplexing technique, etc. associated with the reference signal, for example, depending on whether the NLEST-RS (and / or CHEST-RS) transmission is on an FDM carrier or a TDM carrier, whether it is associated with a first PA configuration or a second PA configuration, or whether it is based on carriers using different subcarrier spacings (SCS), etc.

[0140] Accordingly, base station 205 can transmit and UE 210 can receive NLEST-RS (and / or CHEST-RS) specific to base station 205's PA configuration / antenna configuration / multiplexing technology. UE 210 can determine the set of parameters (e.g., numbering or indexing) associated with NLEST-RS (and / or CHEST-RS) based on a dynamic parameter set scheme. For example, UE 210 can identify or otherwise determine the PA configuration, antenna configuration, multiplexing technology, etc., used for or otherwise associated with NLEST-RS (and / or CHEST-RS). This may include UE 210 determining whether NLEST-RS (and / or CHEST-RS) is transmitted on a first PA configuration or a second PA configuration, using a first antenna configuration or a second antenna configuration, using an FDM carrier or a TDM carrier, etc. Based on the number or index (e.g., parameter set) associated with NLEST-RS (and / or CHEST-RS), UE 210 may be able to distinguish the association between NLEST-RS (and / or CHEST-RS) and a specific PA configuration / antenna configuration combination of base station 205. That is, UE 210 may be able to specifically identify the PA configuration of the transmitting device based on the number or index associated with NLEST-RS (and / or CHEST-RS) and the antenna configuration.

[0141] UE 210 can also determine the nonlinear response of the PA configuration based on the NLEST-RS and NLEST number or index, for example, according to the techniques discussed above. Accordingly, base station 205 and UE 210 can communicate based on the nonlinear response of the PA configuration.

[0142] Although the dynamic parameter set scheme is generally described herein as being applied across different PA configurations, antenna configurations, multiplexing techniques, etc., it should be understood that other distinguishing features can be used to support this dynamic parameter set scheme and differentiate NLEST-RS (and / or CHEST-RS) with the same numbering or index. For example, the set of numbers or indices for NLEST-RS (and / or CHEST-RS) signals can be associated with different geographical regions (e.g., reused by geographically separated base stations), different time periods (e.g., reused between different transmission windows), different transmission times (e.g., reused between different symbols, time slots, subframes, etc. within a transmission window), different SCS configurations (e.g., reused between carriers with different SCS), etc. Accordingly, a dynamic parameter set scheme can be employed to support a relatively large number of transmitting NLEST-RS (and / or CHEST-RS) signals, where at least a portion of these signals are associated with the same numbering or index, but are distinguishable based on the associated features.

[0143] Figures 3A to 3C Examples of resource configuration 300 supporting nonlinear reference signal design according to various aspects of this disclosure are explained. Resource configuration 300 can implement aspects of wireless communication systems 100 and / or 200, or can be implemented by aspects of wireless communication systems 100 and / or 200. Aspects of resource configuration 300 can be implemented by base stations and / or UEs, which can be examples of the corresponding devices described herein. Base stations and / or UEs can be configured as transmitting devices / receiving devices, or vice versa. Generally, Figure 3A Resource configuration 300-a explains the CHEST-RS / NLEST-RS resource configuration without duplicates. Figure 3B Resource allocation 300-b and Figure 3C Resource Configuration 300-c explains the CHEST-RS / NLEST-RS resource configuration using different repeat modes.

[0144] As discussed above, the described aspects of the technology introduce CHEST-RS 305 and NLEST-RS 310 signals associated with a specific PA configuration of the transmitting device (e.g., a base station). That is, each CHEST-RS 305 and NLEST-RS 310 transmission can be associated with a specific PA configuration of the base station (such as a specific transmit chain, spatial flow, beamforming direction / configuration, specific PA / (other) oscillators within the transmit chain, individually or in any combination). The UE can receive the CHEST-RS 305 transmitted over a frequency band (e.g., the full bandwidth used for communication between the base station and the UE). The UE can use the CHEST-RS 305 signal to measure, identify, or otherwise determine channel estimation measurements associated with the PA configuration. For example, the UE can measure the received power level of the CHEST-RS 305 over time.

[0145] The UE can receive NLEST-RS 310 transmitted on a subset of the frequency band (e.g., a portion of the full bandwidth used for communication between the base station and the UE). The UE can use the NLEST-RS 310 signal to measure, identify, or otherwise determine nonlinear estimation measurements associated with the PA configuration. Nonlinear estimation measurements generally identify or otherwise correspond to the nonlinear response of the base station's PA configuration. The UE can provide feedback information to the base station associated with the channel estimation measurements and / or nonlinear estimation measurements, which can be used to mitigate or eliminate distortion or interference in the channel caused by PA configuration nonlinearity. Accordingly, the base station and the UE can perform wireless communication based on the channel estimation measurements and the nonlinear response of the PA configuration.

[0146] In some aspects, the base station can configure the UE with resource configurations for CHEST-RS 305 and / or NLEST-RS 310 transmissions. Broadly speaking, resource configurations can identify aspects of resources or other parameters such as time, frequency, space, and code associated with the corresponding reference signal. For example, resource configurations can broadly identify spatial allocations (e.g., number of antenna ports / precoding), frequency allocations (e.g., PRB density, number of CHEST-RS PRBs, number of NLEST-RS PRBs), and time allocations (e.g., number of CHEST-RS symbols / repetitions, number of NLEST-RS symbols / repetitions), etc., for CHEST-RS / NLEST-RS transmissions. The base station can use higher-layer signaling, RRC signaling, MAC CE, DCI, and / or other signaling techniques to configure the resource configurations for the UE. CHEST-RS 305 and NLEST-RS 310 can be allocated the same or different resources depending on the resource configuration. Resource configuration 300 illustrates three non-limiting examples of resource configurations that can be implemented according to the described techniques.

[0147] First go to Figure 3A Resource configuration 300-a, configured by the base station, may include CHEST-RS 305 transmitted during a single symbol (e.g., symbol 5), which may be a symbol preceding NLEST-RS 310 transmission. NLEST-RS 310 may be transmitted during a single symbol (e.g., symbol 6), which may be a symbol following CHEST-RS 305 transmission.

[0148] CHEST-RS 305 can transmit using the full frequency band (e.g., extended over the entire bandwidth allocated to the UE to allow as many resources as possible). NLEST-RS 310 can transmit using a subset of the frequency band (e.g., extended over a limited bandwidth to avoid or mitigate high adjacent channel leakage ratio (ACLR)).

[0149] In some examples, the CHEST-RS 305 transmission can be de-pumped (e.g., it can be un-amplified for transmission at a specific transmit power level) so that signal support will be in the PA linear region. In some examples, the NLEST-RS310 can be pumped (e.g., at least to some extent amplified) so that signal support will be in the PA non-linear region. In some aspects, the UE may or may not be aware that the reference signal is pumped or de-pumped. In some aspects, the base station can increase bandwidth and / or power according to a configuration table. Figure 3A In resource configuration 300-a, CHEST-RS 305 and / or NLEST-RS 310 are transmitted without duplication.

[0150] Go to Figure 3B Resource allocation 300-b and Figure 3C The resource configuration 300-c, configured by the base station, may include repetition for CHEST-RS 305 and / or NLEST-RS 310. Generally, repetition of CHEST-RS 305 and / or NLEST-RS 310 transmissions can improve the CHEST / NLEST measurement performance of the receiver. That is, the UE can receive one or more instances of CHEST-RS 305 and / or NLEST-RS 310 transmissions according to the repetition pattern. Accordingly, channel estimation measurements and nonlinear estimation measurements can each be based on the repetition patterns of CHEST-RS 305 and NLEST-RS 310, respectively.

[0151] Figure 3B Resource configuration 300-b explains an example repetition pattern in which NLEST-RS 310 is repeated four times while CHEST-RS 305 is not repeated. Figure 3B Resource configuration 300-b does indeed include an optional CHEST-RS 305 transmission following the final NLEST-RS 310 transmission. Accordingly, Figure 3B Resource configuration 300-b illustrates an example in which the base station transmits CHEST-RS 305 during one symbol (e.g., symbol 5) and then transmits NLEST-RS 310 signals for the next four symbols (e.g., symbols 6-9) in four repetitions. Optional CHEST-RS 305 transmissions during symbol 10 can further improve channel estimation measurements and / or nonlinear estimation measurements obtained by the UE.

[0152] Figure 3C Resource configuration 300-c explains an example repeating pattern in which NLEST-RS 310 is repeated four times and CHEST-RS 305 is repeated twice. Figure 3C Resource configuration 300-c does indeed include an optional CHEST-RS 305 transmission following the final NLEST-RS 310 transmission. Accordingly, Figure 3CResource configuration 300-c illustrates an example where the base station transmits CHEST-RS 305 during one symbol (e.g., symbol 5), and then transmits two repetitions of the NLEST-RS 310 signal during the next two symbols (e.g., symbols 6-7). The base station may transmit another repetition of CHEST-RS 305 during one symbol (e.g., symbol 8), and then transmit two more repetitions of the NLEST-RS 310 signal during the next two symbols (e.g., symbols 9-10). Optional CHEST-RS 305 transmission during symbol 11 can further improve the channel estimation and / or nonlinear estimation measurements obtained by the UE.

[0153] It should be understood that other repetition / sequencing modes can also be used for CHEST-RS 305 and / or NLEST-RS 310 signals. Furthermore, various aspects of resource configuration 300 (resource configuration 300-a, resource configuration 300-b, resource configuration 300-c) can implement the dynamic parameter set scheme discussed herein.

[0154] Figures 4A to 4B Examples of resource configuration 400 supporting nonlinear reference signal design and communication according to various aspects of this disclosure are explained. Resource configuration 400 may implement aspects of wireless communication systems 100 and / or 200 and / or resource configuration 300, or may be implemented by aspects of wireless communication systems 100 and / or 200 and / or resource configuration 300. Aspects of resource configuration 400 may be implemented by base stations and / or UEs, which may be examples of the corresponding devices described herein. Generally, Figure 4A Resource configuration 400-a explains the first example of CHEST-RS / NLEST-RS resource configuration and Figure 4B The resource configuration 400-b explains the second example, CHEST-RS / NLEST-RS resource configuration.

[0155] As discussed above, the described aspects of the technology introduce CHEST-RS and NLEST-RS signals (which are simply interpreted jointly as nonlinear reference signals (NL-RS)) associated with a specific PA configuration of the transmitting device (e.g., a base station). That is, each CHEST-RS and NLEST-RS transmission can be associated with a specific PA configuration of the base station (such as a specific transmit chain, spatial flow, beamforming direction / configuration, specific PA / (other) oscillators within the transmit chain, etc., individually or in any combination). The UE can receive the CHEST-RS transmitted over a frequency band (e.g., the full bandwidth used for communication between the base station and the UE). The UE can use the CHEST-RS signals to measure, identify, or otherwise determine channel estimation measurements associated with the PA configuration. For example, the UE can measure the received power level of the CHEST-RS over time.

[0156] Similarly, the UE can receive NLEST-RS transmitted over, for example, a subset of the frequency band (e.g., a portion of the full bandwidth used for communication between the base station and the UE). The UE can measure, identify, or otherwise determine nonlinear estimation measurements associated with the PA configuration based on the NLEST-RS signal and CHEST-RS. Nonlinear estimation measurements generally identify or otherwise correspond to the nonlinear response of the base station's PA configuration. The UE can provide feedback information to the base station associated with the channel estimation measurements and / or nonlinear estimation measurements, which can be used to mitigate or eliminate distortion or interference in the channel caused by PA configuration nonlinearity. Accordingly, the base station and the UE can perform wireless communication based on the channel estimation measurements and the nonlinear response of the PA configuration.

[0157] In some aspects, the base station can configure the UE with resource configurations for CHEST-RS and / or NLEST-RS transmissions. Broadly speaking, resource configurations can identify aspects of resources or other parameters such as time, frequency, space, and code associated with the corresponding signal. For example, resource configurations can broadly identify spatial allocations (e.g., number of antenna ports / precoding), frequency allocations (e.g., PRB density, number of CHEST-RS PRBs, number of NLEST-RS PRBs), and time allocations (e.g., number of CHEST-RS symbols / repetitions, number of NLEST-RS symbols / repetitions), etc., for CHEST-RS / NLEST-RS transmissions. The base station can use higher-layer signaling, RRC signaling, MAC CE, DCI, and / or other signaling techniques to configure resource configurations for the UE. Resource configuration 400 explains two non-limiting examples of resource configurations that can be implemented according to the described techniques.

[0158] In some examples, resource configurations may utilize or otherwise simulate other reference signal designs. For example, frequency allocation density may correspond to configurable resource element allocation density (e.g., density = [1, 2, 3, 4, 6, 12, etc.]). In some examples, resource element allocations may be evenly spaced across frequency bands. In some examples, CHEST-RS and NLEST-RS resource elements may be the same or different.

[0159] Configured by the base station Figure 4A Resource allocation 400-a can include a resource element density of 6. Figure 4B Resource configuration 400-b may include a resource element density of 3. That is, resource configuration 400-a may include six resource elements configured for CHEST-RS and / or NLEST-RS transmission (explained as six resource elements carrying NL-RS 405). These six resource elements may occur during one symbol period of a time slot. Resource configuration 400-b may include three resource elements configured for CHEST-RS and / or NLEST-RS transmission (explained as three resource elements carrying NL-RS 405). These three resource elements may occur during one symbol period of a time slot.

[0160] Figure 5 Examples of resource configuration 500 supporting nonlinear reference signal design and communication according to various aspects of this disclosure are explained. Resource configuration 500 may implement aspects of wireless communication systems 100 and / or 200 and / or resource configurations 300 and / or 400, or may be implemented by aspects of wireless communication systems 100 and / or 200 and / or resource configurations 300 and / or 400. Aspects of resource configuration 500 may be implemented by base stations and / or UEs, which may be examples of the corresponding devices described herein. Generally, resource configuration 500 illustrates an example multi-layer resource configuration.

[0161] As discussed above, the described aspects of the technology introduce CHEST-RS and NLEST-RS signals (jointly simplified as NL-RS 505) associated with a specific PA configuration of the transmitting device (e.g., a base station). That is, each CHEST-RS and NLEST-RS transmission can be associated with a specific PA configuration of the base station (such as a specific transmit chain, spatial flow, beamforming direction / configuration, specific PA / (other) oscillators within the transmit chain, individually or in any combination). The UE can receive the CHEST-RS transmitted over a frequency band (e.g., the full bandwidth used for communication between the base station and the UE). The UE can use the CHEST-RS signals to measure, identify, or otherwise determine channel estimation measurements associated with the PA configuration. For example, the UE can measure the received power level of the CHEST-RS over time.

[0162] Similarly, the UE can receive NLEST-RS transmitted on a subset of the frequency band (e.g., a portion of the full bandwidth used for communication between the base station and the UE). The UE can measure, identify, or otherwise determine nonlinear estimation measurements associated with the PA configuration based on the NLEST-RS signal and CHEST-RS. Nonlinear estimation measurements generally identify or otherwise correspond to the nonlinear response of the base station's PA configuration. The UE can provide feedback information to the base station associated with the channel estimation measurements and / or nonlinear estimation measurements, which can be used to mitigate or eliminate distortion or interference in the channel caused by PA configuration nonlinearity. Accordingly, the base station and the UE can perform wireless communication based on the channel estimation measurements and the nonlinear response of the PA configuration.

[0163] In some aspects, the base station can configure the UE with resource configurations for CHEST-RS and / or NLEST-RS transmissions. Broadly speaking, resource configurations can identify aspects of resources or other parameters such as time, frequency, space, and code associated with the corresponding signal. For example, resource configurations can broadly identify spatial allocations (e.g., number of antenna ports / precoding), frequency allocations (e.g., PRB density, number of CHEST-RS PRBs, number of NLEST-RS PRBs), and time allocations (e.g., number of CHEST-RS symbols / repetitions, number of NLEST-RS symbols / repetitions), etc., for CHEST-RS / NLEST-RS transmissions. The base station can use higher-layer signaling, RRC signaling, MAC CE, DCI, and / or other signaling techniques to configure resource configurations for the UE. Resource configuration 500 illustrates non-limiting examples of resource configurations that can be implemented according to the described techniques.

[0164] In the example illustrated in Resource Configuration 500, the resource configuration configured by the base station is multi-layered. For example, Resource Configuration 500 can use antenna multiplexing (e.g., different antenna configurations, etc.) for CHEST-RS / NLEST-RS transmission. Antenna multiplexing can correspond to different multiplexing techniques, such as FDM, TDM, CDM, different beamforming configurations, antenna configurations, etc. Resource Configuration 500 illustrates an example FDM method for resource configuration configured by the base station.

[0165] In some examples of FDM multiplexing techniques, the number of layers per symbol can be determined based on the density of resource elements in a single layer, for example, by the following formula: In the non-limiting example illustrated in resource configuration 500, each layer may shift one resource element. For example, for layer 515, the resource element for linear RS 510 (e.g., CHEST-RS and / or some other linear RS) may occur during symbol 5 and on the bottom subcarrier of the time slot. NL-RS 505 may occur during symbol 9 and may also use the same bottom subcarrier of the time slot. For layer 520, the resource element for linear RS 510 may occur during symbol 9, but may be shifted up by one subcarrier. Similarly, NL-RS 505 may occur during symbol 9, but may also be shifted up by one subcarrier.

[0166] For layer 525, the resource element for linear RS 510 can occur during symbol 5, but can be shifted up by another subcarrier (e.g., to a third subcarrier in the frequency band (FB)). Similarly, NL-RS 505 can occur during symbol 9, but can also be shifted up by one subcarrier (e.g., to a third subcarrier in the FB).

[0167] For layer 530 (e.g., the bottom layer), the resource element for linear RS 510 can occur during symbol 5, but can be shifted up to another subcarrier (e.g., to the fourth subcarrier of the FB). Similarly, NL-RS 505 can occur during symbol 9, but can also be shifted up to another subcarrier (e.g., to the fourth subcarrier of the FB).

[0168] In some examples of CDM multiplexing techniques, different gold sequences (e.g., seeds) can be used for each layer. SDM multiplexing techniques may not use multiplexing, but can instead identify the digital precoding matrix used for NL-RS 505 transmission.

[0169] Accordingly, the UE can report channel estimation measurements and / or nonlinear estimation measurements to the base station, and can perform OTA-DPD or DPoD techniques to mitigate or eliminate interference or distortion in the channel introduced by the nonlinear response configured by the base station's PA.

[0170] Figure 6 Examples of resource configuration 600 supporting nonlinear reference signal design and communication according to various aspects of this disclosure are explained. Resource configuration 600 can be implemented by aspects of wireless communication systems 100 and / or 200 and / or resource configurations 300, 400 and / or 500, or can be implemented by aspects of wireless communication systems 100 and / or 200 and / or resource configurations 300, 400 and / or 500. Aspects of resource configuration 600 can be implemented by base stations and / or UEs, which can be examples of the corresponding devices described herein. Generally, resource configuration 600 illustrates an example multi-port resource configuration.

[0171] As discussed above, the described aspects of the technology introduce CHEST-RS 615 and NLEST-RS 620 signals (jointly interpreted as NL-RS 605 using antenna ports 0-7 and NL-RS 610 using antenna ports 8-13) associated with a specific PA configuration of the transmitting device (e.g., a base station). That is, each CHEST-RS 615 and NLEST-RS 620 transmission can be associated with a specific PA configuration of the base station (such as a specific transmit chain, spatial flow, beamforming direction / configuration, specific PA / (other) oscillators within the transmit chain, individually or in any combination). The UE can receive the CHEST-RS 615 transmitted over a frequency band (e.g., the full bandwidth used for communication between the base station and the UE). The UE can use the CHEST-RS 615 signal to measure, identify, or otherwise determine channel estimation measurements associated with the PA configuration. For example, the UE can measure the received power level of the CHEST-RS 615 over time.

[0172] Similarly, the UE can receive NLEST-RS 620 transmitted on a subset of the frequency band (e.g., a portion of the full bandwidth used for communication between the base station and the UE). The UE can use the NLEST-RS 620 signal to measure, identify, or otherwise determine nonlinear estimation measurements associated with the PA configuration. Nonlinear estimation measurements can generally identify or otherwise correspond to the nonlinear response of the base station's PA configuration. The UE can provide feedback information to the base station associated with the channel estimation measurements and / or nonlinear estimation measurements, which can be used to mitigate or eliminate distortion or interference introduced into the channel due to PA configuration nonlinearity. Accordingly, the base station and the UE can perform wireless communication based on the channel estimation measurements and the nonlinear response of the PA configuration.

[0173] In some aspects, the base station can configure the UE with resource configurations for CHEST-RS 615 and / or NLEST-RS 620 transmissions. Broadly speaking, resource configurations can identify aspects of resources or other parameters such as time, frequency, space, and code associated with the corresponding signal. For example, resource configurations can broadly identify spatial allocations (e.g., number of antenna ports / precoding), frequency allocations (e.g., PRB density, number of CHEST-RS PRBs, number of NLEST-RS PRBs), and time allocations (e.g., number of CHEST-RS symbols / repetitions, number of NLEST-RS symbols / repetitions), etc., for CHEST-RS / NLEST-RS transmissions. The base station can use higher-layer signaling, RRC signaling, MAC CE, DCI, and / or other signaling techniques to configure the resource configurations for the UE. Resource configuration 600 illustrates non-limiting examples of resource configurations that can be implemented according to the described techniques.

[0174] In the example illustrated in Resource Configuration 600, the resource configuration configured by the base station is for multiple antenna ports. For example, Resource Configuration 600 can multiplex antennas (e.g., different antenna configurations, etc.) for CHEST-RS / NLEST-RS transmission. Antenna multiplexing can correspond to one or more different multiplexing techniques, such as FDM, TDM, CDM, etc. Resource Configuration 600 illustrates an example TDM approach for resource configuration configured by the base station.

[0175] In TDM multiplexing technology, CHEST-RS 615 and / or NLEST-RS 620 can transmit using multiple antenna ports (e.g., antenna ports 0-13, which are divided into a first group of antenna ports 0-7 and a second group of antenna ports 8-13) according to TDM-based resource configuration. That is, each reference signal can be transmitted in different symbols of the time slot and / or during the same symbol(s), but using different antenna ports. For example, at least some instances of CHEST-RS 615 and NLEST-RS 620 can be transmitted during the same symbol, but using different antenna ports. For example, in cases where frequency diversity does not provide the resources necessary to support such reference signal transmission, transmit ports (e.g., antenna ports / configurations) can be time-multiplexed. Resource configuration 600 illustrates an example where CHEST-RS 615 and NLEST-RS 620 can be configured with FDM in which the first and second groups of antenna ports are TDM-respectively ...

[0176] Resource configuration 600 explains an example of repeatedly configuring CHEST-RS 615 and NLEST-RS 620. That is, Figure 6 Resource configuration 600 illustrates an example repetition pattern where NLEST-RS 620 is repeated four times and CHEST-RS 615 is repeated twice for each antenna port group. Resource configuration 600 does include an optional CHEST-RS 615 transmission following the final NLEST-RS 620 transmission for each antenna port group. Correspondingly, for antenna ports 0-7, resource configuration 600 illustrates an example where the base station uses antenna ports 0-7 to transmit CHEST-RS 615 and subsequently also uses antenna ports 0-7 to transmit the NLEST-RS 620 signal for two repetitions. The base station can use antenna ports 0-7 to transmit another instance of CHEST-RS 615 and subsequently transmit two more repetitions of the NLEST-RS 620 signal. The optional CHEST-RS 615 transmission following the first iteration of the CHEST-RS 615 and NLEST-RS 620 repetitions can improve channel estimation measurements and / or nonlinear estimation measurements obtained by the UE.

[0177] Similarly, for antenna ports 8-13, resource configuration 600 illustrates two repeated examples where the base station uses antenna port 8-13 to transmit CHEST-RS 615 and subsequently also uses antenna port 8-13 to transmit the NLEST-RS 620 signal. The base station can use antenna port 8-13 to transmit another instance of CHEST-RS 615 and subsequently transmit two more repetitions of the NLEST-RS 620 signal. Optional CHEST-RS 615 transmissions following the final iteration of the CHEST-RS 615 and NLEST-RS 620 repetitions can improve channel estimation measurements and / or nonlinear estimation measurements obtained by the UE.

[0178] It should be understood that other repeat / sequencing modes can also be used for CHEST-RS 615 and / or NLEST-RS 620 signals.

[0179] Figures 7A to 7C Examples of resource configuration 700 supporting nonlinear reference signal design and communication according to various aspects of this disclosure are explained. Resource configuration 700 can be implemented by aspects of wireless communication systems 100 and / or 200 and / or resource configurations 300, 400, 500 and / or 600, or can be implemented by aspects of wireless communication systems 100 and / or 200 and / or resource configurations 300, 400, 500 and / or 600. Aspects of resource configuration 700 can be implemented by base stations and / or UEs, which can be examples of the corresponding devices described herein. Generally, Figure 7A Resource configuration 700-a explains an example based on periodic resource configuration. Figure 7B Resource configuration 700-b explains an example based on semi-persistent resource configuration, and Figure 7C The resource configuration 700-c example explains an example based on non-periodic resource configuration.

[0180] As discussed above, the described aspects of the technology introduce CHEST-RS and NLEST-RS signals (jointly interpreted as NL-RS 705) associated with a specific PA configuration of the transmitting device (e.g., a base station). That is, each CHEST-RS and NLEST-RS transmission can be associated with a specific PA configuration of the base station (such as a specific transmit chain, spatial flow, beamforming direction / configuration, specific PA / (other) oscillators within the transmit chain, individually or in any combination). The UE can receive the CHEST-RS transmitted over a frequency band (e.g., the full bandwidth used for communication between the base station and the UE). The UE can use the CHEST-RS signals to measure, identify, or otherwise determine channel estimation measurements associated with the PA configuration. For example, the UE can measure the received power level of the CHEST-RS over time.

[0181] Similarly, the UE can receive NLEST-RS transmitted on a subset of the frequency band (e.g., a portion of the full bandwidth used for communication between the base station and the UE). The UE can measure, identify, or otherwise determine nonlinear estimation measurements associated with the PA configuration based on the NLEST-RS signal and CHEST-RS. Nonlinear estimation measurements generally identify or otherwise correspond to the nonlinear response of the base station's PA configuration. The UE can provide feedback information to the base station associated with the channel estimation measurements and / or nonlinear estimation measurements, which can be used to mitigate or eliminate distortion or interference in the channel introduced by PA configuration nonlinearity. Accordingly, the base station and the UE can perform wireless communication based on the channel estimation measurements and the nonlinear response of the PA configuration.

[0182] In some aspects, the base station can configure the UE with resource configurations for CHEST-RS and / or NLEST-RS transmissions. Broadly speaking, resource configurations can identify aspects of resources or other parameters such as time, frequency, space, and code associated with the corresponding signal. For example, resource configurations can broadly identify spatial allocations (e.g., number of antenna ports / precoding), frequency allocations (e.g., PRB density, number of CHEST-RS PRBs, number of NLEST-RS PRBs), and time allocations (e.g., number of CHEST-RS symbols / repetitions, number of NLEST-RS symbols / repetitions), etc., for CHEST-RS / NLEST-RS transmissions. The base station can use, for example, higher-layer signaling, RRC signaling, MAC CE, DCI, and / or other signaling techniques to configure the resource configurations for the UE. Resource configuration 700 illustrates three non-limiting examples of resource configurations that can be implemented according to the described techniques. More specifically, resource configuration 700 configured by the base station can include periodic, semi-persistent, and / or aperiodic NL-RS 705 transmissions.

[0183] First go to Figure 7A Resource configuration 700-a can instruct that NL-RS 705 transmissions be configured to be inherently periodic (e.g., every N time slots). Specifically, NL-RS 705 transmissions are configured with a periodicity of seven time slots, such that the first three time slots of the period include NL-RS 705 transmissions while the last four time slots of the period do not. For example, time slots 2-4 can be configured with NL-RS 705 transmissions while time slots 5-8 can be not configured with NL-RS 705 transmissions. This pattern repeats every seven time slots (e.g., during time slots 9-15, time slots 16-22, etc.).

[0184] Next, turn to Figure 7BResource configuration 700-b can instruct that the NL-RS 705 transmission be configured to be semi-persistent in nature (e.g., similar to a periodic-based resource configuration, where NL-RS 705 is transmitted every N time slots, but can be turned on and off). Specifically, the NL-RS 705 transmission is configured with a periodicity of seven time slots, such that the first three time slots of the period include the NL-RS 705 transmission while the last four time slots of the period do not. However, the NL-RS 705 transmission can be turned on in some periods and off in others. For example, the periodic nature of resource configuration 700-a could include time slots 2-4 configured for the NL-RS 705 transmission, and time slots 5-8 could be left unconfigured in the absence of NL-RS 705 transmission. If NL-RS 705 transmission is enabled according to the semi-persistent resource configuration 700-b, the pattern can be repeated every seven time slots (e.g., during time slots 9-15, time slots 16-22, etc.).

[0185] In the example explained in Resource Configuration 700-b, NL-RS 705 transmission is enabled during time slots 0-6, disabled during time slots 7-20, and subsequently enabled again during time slots 21-27. Correspondingly, NL-RS 705 transmission can occur during time slots 2-4 and again during time slots 23-25. However, NL-RS 705 transmissions scheduled in other ways during time slots 9-11 and 16-18 are not transmitted (shaded by a lighter crosshair) because those resources have been disabled according to Resource Configuration 700-b. Base stations can use various signaling techniques to enable and disable NL-RS 705 transmissions, such as higher-layer signaling, RRC signaling, MAC CE, DCI, etc. New triggering signaling can also be used.

[0186] Finally, go to Figure 7C The resource configuration 700-c can instruct that NL-RS 705 transmissions are configured to be inherently aperiodic (e.g., NL-RS 705 transmissions are signaled-triggered). Specifically, NL-RS 705 transmissions are not configured to be periodic or semi-persistent. Instead, any NL-RS 705 transmission is preceded by an NL-RS trigger 710. The NL-RS trigger 710 can utilize any signaling technique, such as higher-layer signaling, RRC signaling, MAC CE, DCI, etc. In some examples, new signals can be used to explicitly and / or implicitly indicate that an NL-RS 705 transmission is about to occur.

[0187] In the example illustrated in resource configuration 700-c, the UE may receive NL-RS trigger 710 during the same time slot in which NL-RS 705 transmission is enabled and / or during one or more previous time slots. In the non-limiting example resource configuration 700-c, NL-RS trigger 710 is received in a time slot preceding NL-RS 705 transmission. For example, the UE may receive NL-RS trigger 710 during time slot 2, with NL-RS trigger 710 scheduling NL-RS 705 transmission during time slots 3 and 4. The UE may receive another NL-RS trigger 710 during time slot 9, scheduling NL-RS 705 transmission during time slots 10 and 11, another NL-RS trigger during time slot 16, scheduling NL-RS 705 transmission during time slots 17 and 18, and so on.

[0188] Accordingly, the base station can trigger NL-RS 705 transmissions for the UE to support nonlinear estimation / mitigation. The base station can trigger NL-RS 705 transmissions as needed (e.g., based on a negative acceptance indication received based on a threshold number) and / or based on a request from the UE (e.g., based on receiving an NL-RS trigger request from the UE). The described aspects of the technique introduce a reference signal structure for nonlinear estimation used in OTA-DPD and / or DPoD technologies. The reference signal structure and format are flexible enough to address over-the-air nonlinear estimation procedures.

[0189] Figure 8 Examples of resource configuration 800 supporting nonlinear reference signal design and communication according to various aspects of this disclosure are explained. Resource configuration 800 may implement aspects of wireless communication systems 100 and / or 200 and / or resource configurations 300, 400, 500, 600 and / or 700, or may be implemented by aspects of wireless communication systems 100 and / or 200 and / or resource configurations 300, 400, 500, 600 and / or 700. Aspects of resource configuration 800 may be implemented by base stations and / or UEs, which may be examples of the corresponding devices described herein.

[0190] As discussed above, the described aspects of the technology introduce CHEST-RS and NLEST-RS signals (jointly interpreted as NL-RS) associated with a specific PA configuration of the transmitting device (e.g., a base station). That is, each CHEST-RS and NLEST-RS transmission can be associated with a specific PA configuration of the base station (such as a specific transmit chain, spatial flow, beamforming direction / configuration, specific PA / (other) oscillators within the transmit chain, antenna ports, etc., individually or in any combination). The UE can receive the CHEST-RS transmitted over a frequency band (e.g., the full bandwidth used for communication between the base station and the UE). The UE can use the CHEST-RS signals to measure, identify, or otherwise determine channel estimation measurements associated with the PA configuration. For example, the UE can measure the received power level of the CHEST-RS over time.

[0191] Similarly, the UE can receive NLEST-RS transmitted on a subset of the frequency band (e.g., a portion of the full bandwidth used for communication between the base station and the UE). The UE can measure, identify, or otherwise determine nonlinear estimation measurements associated with the PA configuration based on the NLEST-RS signal and CHEST-RS. Nonlinear estimation measurements generally identify or otherwise correspond to the nonlinear response of the base station's PA configuration. The UE can provide feedback information to the base station associated with the channel estimation measurements and / or nonlinear estimation measurements, which can be used to mitigate or eliminate distortion or interference in the channel introduced by PA configuration nonlinearity. Accordingly, the base station and the UE can perform wireless communication based on the channel estimation measurements and the nonlinear response of the PA configuration.

[0192] As discussed above, dynamic parameter set schemes can be used for NL-RS transmissions to support a large number of numbers or indices, which can be associated with NL-RS transmissions based on per-PA configuration, antenna configuration, beamforming configuration, etc., of the transmitting device. That is, in some cases, the required number of NL-RS transmissions can be increased, and the FDM of the NL-RS transmission can be limited to the number of component carriers (CCs). Interleaved FDM of multiple CSI-RS transmissions in the same symbol may be infeasible because the analog beam is shared for all subcarriers in that symbol (e.g., at least for that CC). That is, in some cases, all antenna elements can be used for NL-RS transmissions to achieve improved array gain and higher coverage. Resource configuration 800 illustrates an example of resource configuration for implementing higher-order NL-RS TDM transmissions using dynamic parameter sets. Accordingly, the overhead of NL-RS transmissions for DPoD and / or OTA-DPD technologies can be improved.

[0193] For example, the base station and / or UE can otherwise determine the dynamic parameter set scheme associated with NL-RS transmissions from the base station based on the antenna configuration (e.g., antenna port (layer) of the DMRS), since each antenna configuration can have its own set of resource allocations and configurations such as time and frequency under the same reference signal. The UE can receive NL-RS transmissions associated with a PA configuration from the base station and determine the parameter set (e.g., numbering or indexing) associated with the NL-RS transmissions based on the dynamic parameter set scheme and / or antenna configuration. The UE can also determine the nonlinear response of the PA configuration based on the NL-RS transmissions and parameter sets.

[0194] In some aspects, dynamic parameter set techniques can be applied based on different multiplexing techniques (e.g., TDM and / or FDM). The UE can receive NL-RS transmissions associated with the PA configuration from the base station and determine the parameter set (e.g., numbering or indexing) associated with the NL-RS transmissions based on the dynamic parameter set scheme and / or multiplexing technique (e.g., whether the NL-RS transmissions use TDM and / or FDM).

[0195] Broadly speaking, dynamic parameter set schemes enable flexible NL-RS system design and reference signal mapping. In multiplexing technique examples, considering that NL-RS transmissions typically use wider bandwidths to estimate memory effects in the nonlinear response of PA configurations, dynamic parameter set schemes can offer a beneficial trade-off between FDM-to-TDM (and / or TDM-to-TDM) conversions. In some aspects, dynamic parameter set schemes can maintain the signal-to-noise ratio (SNR) during FDM-to-TDM and / or TDM-to-TDM conversions, which can often be limited by the coherence bandwidth of the channel. This is applicable to per-beam-based NL-RS transmissions. In this example, SNR can be maintained relative to the same number of resource elements. However, this can potentially improve coverage and SNR because all subarrays can be used for NL-RS transmissions, rather than using only a single subarray per NL-RS port. In the TDM-to-TDM conversion example, this can provide a reduced number of reference signal samples, but with improved reference signal overhead. This example may be limited by the processing gain required for nonlinear estimation.

[0196] Accordingly, the base station can configure the UE with resource configurations for CHEST-RS and / or NLEST-RS transmissions. Broadly speaking, resource configurations can identify aspects of resources or other parameters associated with the corresponding signal, such as time, frequency, space, and code. For example, resource configurations can broadly identify spatial allocations (e.g., number of antenna ports / precoding), frequency allocations (e.g., PRB density, number of CHEST-RS PRBs, number of NLEST-RS PRBs), and time allocations (e.g., number of CHEST-RS symbols / repetitions, number of NLEST-RS symbols / repetitions), etc. CHEST-RS and NLEST-RS can be configured with the same resources or with different resources. Resource configurations can also carry or otherwise convey information identifying a dynamic parameter set scheme, or other signaling can be used to convey this indication. The base station can use higher-layer signaling, RRC signaling, MAC CE, DCI, and / or other signaling techniques to configure resource configurations and / or dynamic parameter set schemes for the UE.

[0197] Resource configuration 800 describes a non-limiting example of resource configuration that can be implemented according to the described technology for FDM to TDM conversion, wherein in this example, the FDM multiplexing scheme uses a 120kHz SCS carrier and the TDM multiplexing scheme uses a 480kHz SCS carrier. More specifically, resource configuration 800 configured by the base station may include NL-RS transmission using a dynamic parameter set scheme.

[0198] For example, an NL-RS transmission can begin using FDM on spatially independent 120kHz SCS channels (e.g., on a per-subarray basis). For FDM multiplexing, an NL-RS transmission can include an NL-RS 805 transmission using subarray 0, an NL-RS 810 transmission using subarray 1, an NL-RS 815 transmission using subarray 2, and an NL-RS 820 transmission using subarray 3. In this example, correspondingly for FDM multiplexing, an NL-RS 805 transmission using subarray 0 can have a corresponding NL-RS parameter set of 0 (e.g., number, index, or other identifier), an NL-RS 810 transmission using subarray 1 can have a corresponding NL-RS parameter set of 1, an NL-RS 815 transmission using subarray 2 can have a corresponding NL-RS parameter set of 2, and an NL-RS 820 transmission using subarray 3 can have a corresponding NL-RS parameter set of 3. In this example, NL-RS transmissions using subarrays 0-3 can occur during symbols 1 and 2 of time slots. Accordingly, the UE can determine the number, index, or other identifier associated with each NL-RS transmission based on the dynamic parameter set scheme identifier used for FDM multiplexing technology or otherwise.

[0199] However, the UE can identify or otherwise determine that the base station has switched from a first multiplexing technology (FDM in this example) to a second multiplexing technology (e.g., TDM in this example). The TDM multiplexing technology may include spatially dependent NL-RS transmissions (e.g., per-beam based), and in this example, a 480kHz SCS may be used. For the TDM multiplexing technology, in the TDM multiplexing scheme, the NL-RS transmissions may include NL-RS 805 transmission using beam 0, NL-RS 810 transmission using beam 1, NL-RS 815 transmission using beam 2, and NL-RS 820 transmission using beam 3. Accordingly, for the TDM multiplexing technology, numbering, indexing, or other identifiers may be reused from the FDM multiplexing scheme. For example, an NL-RS 805 transmission using beam 0 may have a corresponding NL-RS parameter set of 0, an NL-RS 810 transmission using beam 1 may have a corresponding NL-RS parameter set of 1, an NL-RS 815 transmission using beam 2 may have a corresponding NL-RS parameter set of 2, and an NL-RS 820 transmission using beam 3 may have a corresponding NL-RS parameter set of 3. In this example, NL-RS transmissions using beams 0-3 may occur during symbols 4-11. Accordingly, the UE may determine the number, index, or other identifier associated with each NL-RS transmission based on the dynamic parameter set scheme identifier used for FDM multiplexing technology or otherwise.

[0200] Accordingly, the UE can receive NL-RS transmissions using the same number, index, or other identifier associated with the NL-RS transmissions provided according to the first multiplexing technique (FDM in this example) according to the second multiplexing technique (TDM in this example). That is, the UE can distinguish between NL-RS transmission 805 using subarray (and therefore number / index) 0 according to FDM multiplexing technique and NL-RS transmission 805 using beam (and therefore number / index) 0 according to TDM multiplexing technique. This enables fine-tuning of PA configuration nonlinearity estimation and mitigation.

[0201] Figure 9 Examples of resource configuration 900 supporting nonlinear reference signal design and communication according to various aspects of this disclosure are explained. Resource configuration 900 may be implemented by aspects of wireless communication systems 100 and / or 200 and / or resource configurations 300, 400, 500, 600, 700 and / or 800, or may be implemented by aspects of wireless communication systems 100 and / or 200 and / or resource configurations 300, 400, 500, 600, 700 and / or 800. The aspects of resource configuration 900 may be implemented by base stations and / or UEs, which may be examples of the corresponding devices described herein.

[0202] As discussed above, the described aspects of the technology introduce CHEST-RS and NLEST-RS signals (jointly interpreted as NL-RS) associated with a specific PA configuration of the transmitting device (e.g., a base station). That is, each CHEST-RS and NLEST-RS transmission can be associated with a specific PA configuration of the base station (such as a specific transmit chain, spatial flow, beamforming direction / configuration, specific PA / (other) oscillators within the transmit chain, individually or in any combination). The UE can receive the CHEST-RS transmitted over a frequency band (e.g., the full bandwidth used for communication between the base station and the UE). The UE can use the CHEST-RS signals to measure, identify, or otherwise determine channel estimation measurements associated with the PA configuration. For example, the UE can measure the received power level of the CHEST-RS over time.

[0203] Similarly, the UE can receive NLEST-RS transmitted on a subset of the frequency band (e.g., a portion of the full bandwidth used for communication between the base station and the UE). The UE can use the NLEST-RS signal to measure, identify, or otherwise determine nonlinear estimation measurements associated with the PA configuration. Nonlinear estimation measurements generally identify or otherwise correspond to the nonlinear response of the base station's PA configuration. The UE can provide feedback information to the base station associated with the channel estimation measurements and / or nonlinear estimation measurements, which can be used to mitigate or eliminate distortion or interference in the channel introduced by PA configuration nonlinearity. Accordingly, the base station and the UE can perform wireless communication based on the channel estimation measurements and the nonlinear response of the PA configuration.

[0204] As discussed above, dynamic parameter set schemes can be used for NL-RS transmissions to support a large number of numbers or indices, which can be associated with NL-RS transmissions based on the per-PA configuration, beamforming configuration, antenna configuration, etc., of the transmitting device. That is, in some cases, the required number of NL-RS transmissions can be increased, and the FDM of the NL-RS transmission can be limited to the number of CCs. Interleaving FDM for multiple CSI-RS transmissions in the same symbol may be infeasible because the analog beam is shared for all subcarriers in that symbol (e.g., at least for that CC). That is, in some cases, all antenna elements can be used for NL-RS transmissions to achieve improved array gain and higher coverage. Resource configuration 900 illustrates an example resource configuration for implementing higher-order NL-RS TDM transmissions using dynamic parameter sets. Accordingly, the overhead of NL-RS transmissions for DPoD and / or OTA-DPD technologies can be improved.

[0205] For example, the base station and / or UE can otherwise determine a dynamic parameter set scheme associated with NL-RS transmissions from the base station based on the PA configuration / antenna configuration. The UE can receive NL-RS transmissions associated with the PA configuration / antenna configuration pair from the base station and determine the parameter set (e.g., numbering or indexing) associated with the NL-RS transmissions based on the dynamic parameter set scheme and / or antenna configuration. The UE can also determine the nonlinear response of the PA configuration based on the NL-RS transmissions and parameter sets.

[0206] Broadly speaking, dynamic parameter set schemes enable flexible NL-RS system design and reference signal mapping. Given that NL-RS transmissions typically use wider bandwidths to estimate memory effects in the nonlinear response of the PA configuration, dynamic parameter set schemes can offer a beneficial trade-off between FDM-to-TDM (and / or TDM-to-TDM) conversions. In some respects, dynamic parameter set schemes can maintain SNR during FDM-to-TDM, TDM-to-TDM, etc., which can often be limited by the channel's coherence bandwidth. This may be applicable to per-beam-based NL-RS transmissions. In this example, SNR can be maintained relative to the same number of resource elements. However, this can potentially improve coverage and SNR because all subarrays can be used for the NL-RS transmission, rather than just a single subarray per NL-RS port. In the TDM-to-TDM conversion example, this can provide a reduced number of reference signal samples, but with improved reference signal overhead. This example may be limited by the processing gain required for nonlinear estimation.

[0207] Accordingly, the base station can configure the UE with resource configurations for CHEST-RS and / or NLEST-RS transmissions. Broadly speaking, resource configurations can identify aspects of resources or other parameters associated with the corresponding signal, such as time, frequency, space, and code. For example, resource configurations can broadly identify spatial allocations (e.g., number of antenna ports / precoding), frequency allocations (e.g., PRB density, number of CHEST-RS PRBs, number of NLEST-RS PRBs), and time allocations (e.g., number of CHEST-RS symbols / repetitions, number of NLEST-RS symbols / repetitions), etc. The resources allocated to CHEST-RS and NLEST-RS can be the same (e.g., in the form of size and / or specific resource allocations) or different. Resource configurations can also carry or otherwise convey information identifying a dynamic parameter set scheme, or other signaling that may be used. The base station can use higher-layer signaling, RRC signaling, MAC CE, DCI, and / or other signaling techniques to configure resource configurations and / or dynamic parameter set schemes for the UE.

[0208] As discussed above, aspects of the dynamic parameter set scheme can also be applied across different multiplexing techniques. Resource configuration 900 illustrates non-limiting examples of resource configurations that can be implemented based on the described techniques for TDM-to-TDM conversion (where three TDM configurations using SCS at 120kHz, 240kHz, and 480kHz are shown only as examples). More specifically, resource configuration 900 configured by the base station can include NL-RS transmission using a dynamic parameter set scheme.

[0209] For example, an NL-RS transmission can begin using TDM on a 120kHz SCS channel. For TDM multiplexing, the NL-RS transmission can include an NL-RS 905 transmission during symbol 1, an NL-RS 910 transmission during symbol 2, an NL-RS 915 transmission during symbol 3, and an NL-RS 820 transmission during symbol 4. Symbols in the 120kHz SCS carrier can span 8.92 microseconds (μs). For this TDM multiplexing example, the NL-RS 905 transmission can have a corresponding NL-RS parameter set of 0 (e.g., number, index, or other identifier), the NL-RS 910 transmission can have a corresponding NL-RS parameter set of 1, the NL-RS 915 transmission can have a corresponding NL-RS parameter set of 2, and the NL-RS 920 transmission can have a corresponding NL-RS parameter set of 3. Accordingly, the UE can determine the number, index or other identifier associated with each NL-RS transmission based on the dynamic parameter set scheme identifier used for TDM multiplexing technology or otherwise.

[0210] However, the UE can identify or otherwise determine that the base station has switched from a first multiplexing technique (TDM using a 120kHz SCS channel in this example) to a second multiplexing technique (e.g., TDM using a 240kHz SCS channel in this example). For the second TDM multiplexing technique, NL-RS transmissions can include NL-RS 905 transmission during time slot 1, NL-RS 910 transmission during time slot 2, NL-RS 915 transmission during time slot 3, and NL-RS 920 transmission during time slot 4 in a TDM multiplexing scheme using a 240kHz SCS channel. As can be seen, the time slot duration in the 120kHz SCS channel differs from the time slot duration in the 240kHz SCS channel. Symbols in the 240kHz SCS carrier can span 4.46 microseconds (μs). Accordingly, for the second TDM multiplexing technique, numbers, indices, or other identifiers can be reused from the first TDM multiplexing scheme. For example, both NL-RS 905 transmissions in the 120kHz SCS channel and the 240kHz channel can use a corresponding NL-RS parameter set of 0; both NL-RS 910 transmissions in the 120kHz SCS channel and the 240kHz channel can use a corresponding NL-RS parameter set of 1; both NL-RS 915 transmissions in the 120kHz SCS channel and the 240kHz channel can use a corresponding NL-RS parameter set of 2; and both NL-RS 920 transmissions in the 120kHz SCS channel and the 240kHz channel can use a corresponding NL-RS parameter set of 3. Accordingly, the UE can determine the number, index, or other identifier associated with each NL-RS transmission based on the dynamic parameter set scheme identifier used for TDM multiplexing technology or otherwise.

[0211] Accordingly, the UE can receive NL-RS transmissions using the same number, index, or other identifier associated with the NL-RS transmissions provided according to the first multiplexing technique (TDM in the 120kHz SCS channel in this example) according to the second multiplexing technique (TDM in the 240kHz SCS channel in this example). That is, the UE can distinguish between NL-RS transmission 905 in the 120kHz SCS channel according to the TDM multiplexing technique and NL-RS transmission 905 in the 240kHz SCS channel according to the TDM multiplexing technique and the dynamic parameter set scheme (both of which can use the same number, index, or other identifier of 0).

[0212] However, the UE can identify or otherwise determine that the base station has switched back from the second multiplexing technique (TDM using a 240kHz SCS channel in this example) to the third multiplexing technique (e.g., TDM using a 480kHz SCS channel in this example). For the third TDM multiplexing technique, NL-RS transmissions can include NL-RS 905 transmission during time slot 1, NL-RS 910 transmission during time slot 2, NL-RS 915 transmission during time slot 3, and NL-RS 920 transmission during time slot 4 in a TDM multiplexing scheme using a 480kHz SCS channel. As can be seen, the time slot duration in the 240kHz SCS channel differs from the time slot duration in the 480kHz SCS channel. Symbols in the 480kHz SCS carrier can span 2.23 microseconds (μs). Accordingly, for the third TDM multiplexing technique, numbers, indices, or other identifiers can be reused from the first and / or second TDM multiplexing schemes. For example, NL-RS 905 transmissions in the 120kHz, 240kHz, and 480kHz SCS channels can each use a corresponding NL-RS parameter set of 0; NL-RS 910 transmissions in the 120kHz, 240kHz, and 480kHz SCS channels can each use a corresponding NL-RS parameter set of 1; NL-RS 915 transmissions in the 120kHz, 240kHz, and 480kHz SCS channels can each use a corresponding NL-RS parameter set of 2; and NL-RS 920 transmissions in the 120kHz, 240kHz, and 480kHz SCS channels can each use a corresponding NL-RS parameter set of 3. Accordingly, the UE can determine the number, index, or other identifier associated with each NL-RS transmission based on the dynamic parameter set scheme identifier used for TDM multiplexing technology or otherwise.

[0213] Accordingly, the UE can receive NL-RS transmissions using the same number, index, or other identifier associated with NL-RS transmissions provided according to the first multiplexing technique (TDM in the 120kHz SCS channel in this example) and / or the second multiplexing technique (TDM in the 240kHz SCS channel in this example) according to the third multiplexing technique (TDM in the 480kHz SCS channel in this example). That is, the UE can distinguish between NL-RS transmission 905 in the 120kHz SCS channel according to the TDM multiplexing technique and NL-RS transmission 905 in the 240kHz SCS channel according to the TDM multiplexing technique and the dynamic parameter set scheme (both of which can use the same number, index, or other identifier of 0). Similarly, the UE can distinguish between NL-RS transmission 905 in the 240kHz SCS channel according to the TDM multiplexing technique and NL-RS transmission 905 in the 480kHz SCS channel according to the TDM multiplexing technique and the dynamic parameter set scheme (both of which can use the same number, index, or other identifier of 0). The UE can distinguish between NL-RS transmission 905 in the 240kHz SCS channel and NL-RS transmission 905 in the 480kHz SCS channel based on TDM multiplexing technology, PA configuration / antenna configuration pair and dynamic parameter set scheme (both of which can use the same number, index or other identifier of 0).

[0214] Figure 10 Examples of resource configuration 1000 supporting nonlinear reference signal design and communication according to various aspects of this disclosure are explained. Resource configuration 1000 can be implemented by aspects of wireless communication systems 100 and / or 200 and / or resource configurations 300, 400, 500, 600, 700, 800 and / or 900, or can be implemented by aspects of wireless communication systems 100 and / or 200 and / or resource configurations 300, 400, 500, 600, 700, 800 and / or 900. The aspects of resource configuration 1000 can be implemented by base stations and / or UEs, which can be examples of the corresponding devices described herein.

[0215] As discussed above, the described aspects of the technology introduce CHEST-RS and NLEST-RS signals (jointly interpreted as NL-RS) associated with a specific PA configuration of the transmitting device (e.g., a base station). That is, each CHEST-RS and NLEST-RS transmission can be associated with a specific PA configuration of the base station (such as a specific transmit chain, spatial flow, beamforming direction / configuration, specific PA / (other) oscillators within the transmit chain, individually or in any combination). The UE can receive the CHEST-RS transmitted over a frequency band (e.g., the full bandwidth used for communication between the base station and the UE). The UE can use the CHEST-RS signals to measure, identify, or otherwise determine channel estimation measurements associated with the PA configuration. For example, the UE can measure the received power level of the CHEST-RS over time.

[0216] Similarly, the UE can receive NLEST-RS transmitted on a subset of the frequency band (e.g., a portion of the full bandwidth used for communication between the base station and the UE). The UE can measure, identify, or otherwise determine nonlinear estimation measurements associated with the PA configuration based on the NLEST-RS signal and CHEST-RS. Nonlinear estimation measurements generally identify or otherwise correspond to the nonlinear response of the base station's PA configuration. The UE can provide feedback information to the base station associated with the channel estimation measurements and / or nonlinear estimation measurements, which can be used to mitigate or eliminate distortion or interference in the channel introduced by PA configuration nonlinearity. Accordingly, the base station and the UE can perform wireless communication based on the channel estimation measurements and the nonlinear response of the PA configuration.

[0217] As discussed above, dynamic parameter set schemes can be used for NL-RS transmissions to support a large number of numbers or indices, which can be associated with NL-RS transmissions based on the per-PA configuration, beamforming configuration, antenna configuration, etc., of the transmitting device. That is, in some cases, the required number of NL-RS transmissions can be increased, and the FDM of the NL-RS transmission can be limited to the number of CCs. Interleaving FDM with multiple CSI-RS transmissions in the same symbol may be infeasible because the analog beam is shared for all subcarriers in that symbol (e.g., at least for that CC). That is, in some cases, all antenna elements can be used for NL-RS transmissions to achieve improved array gain and higher coverage. Resource configuration 1000 illustrates an example resource configuration for using dynamic parameter sets to implement higher-order NL-RS FDM to TDM transmission conversion. Accordingly, the overhead of NL-RS transmissions for DPoD and / or OTA-DPD technologies can be improved.

[0218] For example, the base station and / or UE can otherwise determine a dynamic parameter set scheme associated with NL-RS transmissions from the base station based on the PA configuration / antenna configuration pair. The UE can receive NL-RS transmissions associated with the PA configuration / antenna configuration pair from the base station and determine the parameter set (e.g., numbering or indexing) associated with the NL-RS transmissions based on the dynamic parameter set scheme. In some examples, the UE can determine the parameter set based on multiplexing techniques (e.g., whether the NL-RS transmissions use TDM and / or FDM). The UE can also determine the nonlinear response of the PA configuration based on the NL-RS transmissions and the parameter set.

[0219] Broadly speaking, dynamic parameter set schemes enable flexible NL-RS system design and reference signal mapping. Given that NL-RS transmissions typically use wider bandwidths to estimate memory effects in the nonlinear response of the PA configuration, dynamic parameter set schemes can offer a beneficial trade-off between FDM-to-TDM (and / or TDM-to-TDM) conversions. In some respects, dynamic parameter set schemes can maintain SNR during FDM-to-TDM, TDM-to-TDM, etc., which can often be limited by the channel's coherence bandwidth. This may be applicable to per-beam-based NL-RS transmissions. In this example, SNR can be maintained relative to the same number of resource elements. However, this can potentially improve coverage and SNR because all subarrays can be used for the NL-RS transmission, rather than just a single subarray per NL-RS port. In the TDM-to-TDM conversion example, this can provide a reduced number of reference signal samples, but with improved reference signal overhead. This example may be limited by the processing gain required for nonlinear estimation.

[0220] Accordingly, the base station can configure the UE with resource configurations for CHEST-RS and / or NLEST-RS transmissions. Broadly speaking, resource configurations can identify aspects of resources or other parameters associated with the corresponding signal, such as time, frequency, space, and code. For example, resource configurations can broadly identify spatial allocations (e.g., number of antenna ports / precoding), frequency allocations (e.g., PRB density, number of CHEST-RS PRBs, number of NLEST-RS PRBs), and time allocations (e.g., number of CHEST-RS symbols / repetitions, number of NLEST-RS symbols / repetitions), etc. Resources allocated to CHEST-RS can be the same as those allocated to NLEST-RS (e.g., in terms of size and / or specific resources) or can be different. Resource configurations can also carry or otherwise convey information identifying a dynamic parameter set scheme, or other signaling that may be used. The base station can use higher-layer signaling, RRC signaling, MAC CE, DCI, and / or other signaling techniques to configure resource configurations and / or dynamic parameter set schemes for the UE.

[0221] Resource configuration 1000 illustrates a non-limiting example of resource configuration that can be implemented according to the described technology for FDM to TDM conversion. More specifically, resource configuration 1000 configured by the base station may include NL-RS transmission using a dynamic parameter set scheme.

[0222] For example, NL-RS transmission can begin using FDM on spatially independent 120kHz SCS channels (e.g., corresponding to different subarrays and / or beams on a per-subcarrier / beam basis). For FDM multiplexing techniques, NL-RS transmission can include NL-RS 1005 transmission on the first subcarrier using subarray 0, NL-RS 1010 transmission on the second subcarrier using subarray 1, NL-RS 1015 transmission on the third subcarrier using subarray 2, and NL-RS 1020 transmission on the fourth subcarrier using subarray 3. Accordingly, for FDM multiplexing, in this example, an NL-RS 1005 transmission using subarray 0 on the first subcarrier can have a corresponding NL-RS parameter set of 0 (e.g., number, index, or other identifier), an NL-RS 1010 transmission using subarray 1 on the second subcarrier can have a corresponding NL-RS parameter set of 1, an NL-RS 1015 transmission using subarray 2 on the third subcarrier can have a corresponding NL-RS parameter set of 2, and an NL-RS 1020 transmission using subarray 3 on the fourth subcarrier can have a corresponding NL-RS parameter set of 3. In this example, NL-RS transmissions using subarrays 0-3 on the four subcarriers can occur during one symbol of a time slot. Accordingly, the UE can identify or otherwise determine the number, index, or other identifier associated with each NL-RS transmission based on the dynamic parameter set scheme and PA configuration / antenna configuration basis used for FDM multiplexing.

[0223] However, the UE can identify or otherwise determine that the base station has switched from a first multiplexing technology (FDM in this example) to a second multiplexing technology (e.g., TDM in this example). The TDM multiplexing technology may include spatially dependent NL-RS transmissions (e.g., per-beam based), and in this example, a 480kHz SCS may be used. For the TDM multiplexing technology, the NL-RS transmission may include NL-RS 1005 transmission using beam 0 during the first symbol period of the time slot, NL-RS 1010 transmission using beam 1 during the second symbol period of the time slot, NL-RS 1015 transmission using beam 2 during the third symbol period of the time slot, and NL-RS 1020 transmission using beam 3 during the fourth symbol period of the time slot. Accordingly, for the TDM multiplexing technology, numbering, indexing, or other identifiers may be reused from the FDM multiplexing scheme. For example, an NL-RS 1005 transmission using beam 0 during symbol 4 can have a corresponding NL-RS parameter set of 0, an NL-RS 1010 transmission using beam 1 during symbol 5 can have a corresponding NL-RS parameter set of 1, an NL-RS 1015 transmission using beam 2 during symbol 6 can have a corresponding NL-RS parameter set of 2, and an NL-RS 1020 transmission using beam 3 during symbol 7 can have a corresponding NL-RS parameter set of 3. In this example, NL-RS transmissions using subarrays 0-3 can occur during separate symbol periods of time slots. Accordingly, the UE can determine the number, index, or other identifier associated with each NL-RS transmission based on the dynamic parameter set scheme identifier used for TDM multiplexing technology or otherwise.

[0224] Accordingly, the UE can receive NL-RS transmissions using the same number, index, or other identifier associated with NL-RS transmissions provided according to the first multiplexing technique (FDM in this example) according to the second multiplexing technique (TDM in this example). That is, the UE can distinguish between NL-RS transmission 1005 using subarray (and therefore number / index) 0 according to FDM multiplexing technique and NL-RS transmission 1005 using beam (and therefore number / index) 0 according to TDM multiplexing technique based on PA configuration and / or antenna configuration. This can reduce the overhead associated with NL-RS transmissions within the wireless network.

[0225] Figure 11A block diagram 1100 of a device 1105 designed to support a nonlinear reference signal according to aspects of this disclosure is shown. Device 1105 may be an example of aspects of a UE 115 or base station 105 as described herein. Device 1105 may include a receiver 1110, a transmitter 1115, and a communication manager 1120. Device 1105 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0226] Receiver 1110 may provide means for receiving information, such as packets associated with various information channels (e.g., control channels, data channels, information channels related to nonlinear reference signal design), user data, control information, or any combination thereof. The information may be transmitted to other components of device 1105. Receiver 1110 may utilize a single antenna or a collection of multiple antennas.

[0227] Transmitter 1115 may provide means for transmitting signals generated by other components of device 1105. For example, transmitter 1115 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to nonlinear reference signal design), user data, control information, or any combination thereof. In some examples, transmitter 1115 may be co-located with receiver 1110 in a transceiver module. Transmitter 1115 may utilize a single antenna or a collection of multiple antennas.

[0228] The communication manager 1120, receiver 1110, transmitter 1115, or various combinations thereof, or various components thereof, may be examples of means for performing various aspects of a nonlinear reference signal design as described herein. For example, the communication manager 1120, receiver 1110, transmitter 1115, or various combinations thereof, or components thereof, may support methods for performing one or more functions described herein.

[0229] In some examples, the communication manager 1120, receiver 1110, transmitter 1115, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuitry system). This hardware may include a processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, configured to serve as or otherwise support means for performing the functions described herein. In some examples, the processor and memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in memory by the processor).

[0230] Additionally or alternatively, in some examples, the communication manager 1120, receiver 1110, transmitter 1115, or various combinations or components thereof may be implemented by processor-executable code (e.g., as communication management software or firmware). If implemented by processor-executable code, the functionality of the communication manager 1120, receiver 1110, transmitter 1115, or various combinations or components thereof may be performed by a general-purpose processor, DSP, central processing unit (CPU), ASIC, FPGA, or any combination of these or other programmable logic devices (e.g., means configured or otherwise supported for performing the functions described in this disclosure).

[0231] In some examples, the communication manager 1120 may be configured to use or otherwise cooperate with the receiver 1110, transmitter 1115, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, the communication manager 1120 may receive information from the receiver 1110, send information to the transmitter 1115, or be integrated with the receiver 1110, transmitter 1115, or both to receive information, transmit information, or perform various other operations described herein.

[0232] Communication manager 1120 may support wireless communication at a receiving device according to examples disclosed herein. For example, communication manager 1120 may be configured or otherwise support means for receiving CHEST-RS transmitted over a bandwidth associated with a PA configuration of the transmitting device. Communication manager 1120 may be configured or otherwise support means for determining a channel estimation measurement associated with the PA configuration based on the CHEST-RS. Communication manager 1120 may be configured or otherwise support means for receiving NLEST-RS transmitted over a subset of the bandwidth associated with the PA configuration from the transmitting device. Communication manager 1120 may be configured or otherwise support means for determining a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying a nonlinear response of the PA configuration. The communication manager 1120 may be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the channel estimation measurement and the PA configuration.

[0233] Additionally or alternatively, the communication manager 1120 may support wireless communication at the transmitting device according to the examples disclosed herein. For example, the communication manager 1120 may be configured or otherwise support means for identifying CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device. The communication manager 1120 may be configured or otherwise support means for transmitting the CHEST-RS transmitted over the bandwidth to the receiving device. The communication manager 1120 may be configured or otherwise support means for transmitting the NLEST-RS transmitted over a subset of the bandwidth to the receiving device. The communication manager 1120 may be configured or otherwise support means for communicating with the receiving device based on: channel estimation measurements based on the CHEST-RS and nonlinear responses of the PA configuration based on the NLEST-RS and the CHEST-RS.

[0234] Additionally or alternatively, the communication manager 1120 may support wireless communication at the receiving device according to examples disclosed herein. For example, the communication manager 1120 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from the transmitting device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. The communication manager 1120 may be configured or otherwise support means for receiving from the transmitting device NLEST-RS associated with the PA configuration of the transmitting device. The communication manager 1120 may be configured or otherwise support means for determining a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set. The communication manager 1120 may be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the PA configuration.

[0235] Additionally or alternatively, the communication manager 1120 may support wireless communication at the transmitting device according to examples disclosed herein. For example, the communication manager 1120 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted to the receiving device based on corresponding antenna configurations (one or more), each NLEST-RS being associated with a corresponding antenna configuration and PA configuration. The communication manager 1120 may be configured or otherwise support means for transmitting the NLEST-RS associated with the PA configuration of the transmitting device to the receiving device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of which is based on the NLEST-RS and the parameter set. The communication manager 1120 may be configured or otherwise support means for communicating with the receiving device based on the nonlinear response of the PA configuration.

[0236] By including or configuring a communication manager 1120 according to an example as described herein, device 1105 (e.g., a processor that controls or otherwise couples to receiver 1110, transmitter 1115, communication manager 1120, or a combination thereof) can support techniques for improving OTA-DPD and / or DPoD predistortion compensation at the transmitting device, reducing overhead associated with NL-RS transmission, etc.

[0237] Figure 12 A block diagram 1200 of a device 1205 designed to support a nonlinear reference signal according to aspects of this disclosure is shown. Device 1205 may be an example of aspects of device 1105, UE 115, or base station 105 as described herein. Device 1205 may include a receiver 1210, a transmitter 1215, and a communication manager 1220. Device 1205 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0238] Receiver 1210 may provide means for receiving information, such as packets associated with various information channels (e.g., control channels, data channels, information channels related to nonlinear reference signal design), user data, control information, or any combination thereof. The information may be transmitted to other components of device 1205. Receiver 1210 may utilize a single antenna or a collection of multiple antennas.

[0239] Transmitter 1215 may provide means for transmitting signals generated by other components of device 1205. For example, transmitter 1215 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to nonlinear reference signal design), user data, control information, or any combination thereof. In some examples, transmitter 1215 may be co-located with receiver 1210 in a transceiver module. Transmitter 1215 may utilize a single antenna or a collection of multiple antennas.

[0240] Device 1205 or its various components may be examples of means for performing various aspects of a nonlinear reference signal design as described herein. For example, communication manager 1220 may include CHEST-RS manager 1225, NLEST-RS manager 1230, nonlinear communication manager 1235, NL-RS manager 1240, dynamic parameter set manager 1245, or any combination thereof. Communication manager 1220 may be examples of various aspects of communication manager 1120 as described herein. In some examples, communication manager 1220 or its various components may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using receiver 1210, transmitter 1215, or both, or otherwise in cooperation with receiver 1210, transmitter 1215, or both. For example, communication manager 1220 may receive information from receiver 1210, send information to transmitter 1215, or be integrated with receiver 1210, transmitter 1215, or both to receive information, transmit information, or perform various other operations described herein.

[0241] Communication manager 1220 may support wireless communication at the receiving device according to examples disclosed herein. CHEST-RS manager 1225 may be configured or otherwise support means for receiving CHEST-RS transmitted over a bandwidth from the transmitting device, the CHEST-RS being associated with a PA configuration of the transmitting device. CHEST-RS manager 1225 may be configured or otherwise support means for determining a channel estimation measurement associated with the PA configuration based on the CHEST-RS. NLEST-RS manager 1230 may be configured or otherwise support means for receiving NLEST-RS transmitted over a subset of the bandwidth from the transmitting device, the NLEST-RS being associated with the PA configuration. NLEST-RS manager 1230 may be configured or otherwise support means for determining a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying a nonlinear response of the PA configuration. The nonlinear communication manager 1235 can be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the channel estimation measurement and the PA configuration.

[0242] Additionally or alternatively, the communication manager 1220 may support wireless communication at the transmitting device according to the examples disclosed herein. The NL-RS manager 1240 may be configured or otherwise support means for identifying the CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device. The CHEST-RS manager 1225 may be configured or otherwise support means for transmitting the CHEST-RS transmitted over the bandwidth to the receiving device. The NLEST-RS manager 1230 may be configured or otherwise support means for transmitting the NLEST-RS transmitted over a subset of the bandwidth to the receiving device. The nonlinear communication manager 1235 may be configured or otherwise support means for communicating with the receiving device based on: channel estimation measurements based on the CHEST-RS and nonlinear responses based on the PA configuration of the NLEST-RS and the CHEST-RS.

[0243] Additionally or alternatively, the communication manager 1220 may support wireless communication at the receiving device according to examples disclosed herein. The dynamic parameter set manager 1245 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from the transmitting device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. The NLEST-RS manager 1230 may be configured or otherwise support means for receiving from the transmitting device NLEST-RS associated with the PA configuration of the transmitting device. The dynamic parameter set manager 1245 may be configured or otherwise support means for determining a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set. The dynamic parameter set manager 1245 may be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the PA configuration.

[0244] Additionally or alternatively, the communication manager 1220 may support wireless communication at the transmitting device according to examples disclosed herein. The dynamic parameter set manager 1245 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted to the receiving device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. The NL-RS manager 1240 may be configured or otherwise support means for transmitting the NLEST-RS associated with the PA configuration of the transmitting device to the receiving device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of which is based on the NLEST-RS and the parameter set. The nonlinear communication manager 1235 may be configured or otherwise support means for communicating with the receiving device based on the nonlinear response of the PA configuration.

[0245] Figure 13A block diagram 1300 of a communication manager 1320 supporting a nonlinear reference signal design according to various aspects of this disclosure is shown. The communication manager 1320 may be an example of the communication manager 1120, communication manager 1220, or aspects thereof described herein. The communication manager 1320 or its various components may be examples of means for performing various aspects of a nonlinear reference signal design as described herein. For example, the communication manager 1320 may include a CHEST-RS manager 1325, an NLEST-RS manager 1330, a nonlinear communication manager 1335, an NL-RS manager 1340, a dynamic parameter set manager 1345, a resource configuration manager 1350, a repeat manager 1355, a multilayer manager 1360, a boost manager 1365, a multiplexing conversion manager 1370, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0246] Communication manager 1320 may support wireless communication at the receiving device according to examples disclosed herein. CHEST-RS manager 1325 may be configured or otherwise support means for receiving CHEST-RS transmitted over a bandwidth from the transmitting device, the CHEST-RS being associated with a PA configuration of the transmitting device. In some examples, CHEST-RS manager 1325 may be configured or otherwise support means for determining a channel estimation measurement associated with the PA configuration based on the CHEST-RS. NLEST-RS manager 1330 may be configured or otherwise support means for receiving NLEST-RS transmitted over a subset of the bandwidth from the transmitting device, the NLEST-RS being associated with the PA configuration. In some examples, NLEST-RS manager 1330 may be configured or otherwise support means for determining a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying a nonlinear response of the PA configuration. The nonlinear communication manager 1335 can be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the channel estimation measurement and the PA configuration.

[0247] In some examples, the resource configuration manager 1350 may be configured or otherwise supported to receive means for receiving a signal identifying a resource configuration for the CHEST-RS, the NLEST-RS, or both, wherein the CHEST-RS and the NLEST-RS receive the signal based on receiving the signal identifying the resource configuration, and the resource configuration for the CHEST-RS and the resource configuration for the NLEST-RS include the same resource configuration or different resource configurations.

[0248] In some examples, the repeat manager 1355 may be configured or otherwise support means for receiving one or more instances of the CHEST-RS according to the repeat pattern of the CHEST-RS, wherein the channel estimation measurement is based on the one or more instances receiving the CHEST-RS.

[0249] In some examples, the repeat manager 1355 may be configured or otherwise support means for receiving one or more instances of the NLEST-RS according to the repeat pattern of the NLEST-RS, wherein the nonlinear estimation measurement is based on the one or more instances of the NLEST-RS.

[0250] In some examples, the multilayer manager 1360 may be configured or otherwise support means for identifying the antenna configuration of the CHEST-RS, wherein the channel estimation measurement is for the antenna configuration and the PA configuration.

[0251] In some examples, the multilayer manager 1360 may be configured or otherwise support means for identifying the antenna configuration of the NLEST-RS, wherein the nonlinear estimation measurement is for the antenna configuration and the PA configuration.

[0252] In some examples, receiving the CHEST-RS includes receiving it during the first symbol period. In some examples, receiving the NLEST-RS includes receiving it during the second symbol period following the first symbol period.

[0253] In some examples, the resource configuration manager 1350 may be configured or otherwise support means for receiving one or more instances of the CHEST-RS and one or more instances of the nonlinear reference signal according to periodic scheduling, semi-persistent scheduling, aperiodic scheduling, or any combination thereof.

[0254] Additionally or alternatively, the communication manager 1320 may support wireless communication at the transmitting device according to examples disclosed herein. The NL-RS manager 1340 may be configured or otherwise support means for identifying the CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device. In some examples, the CHEST-RS manager 1325 may be configured or otherwise support means for transmitting the CHEST-RS transmitted over the bandwidth to the receiving device. In some examples, the NLEST-RS manager 1330 may be configured or otherwise support means for transmitting the NLEST-RS transmitted over a subset of the bandwidth to the receiving device. In some examples, the nonlinear communication manager 1335 may be configured or otherwise support means for communicating with the receiving device based on: channel estimation measurements based on the CHEST-RS and nonlinear responses based on the PA configuration of the NLEST-RS and the CHEST-RS.

[0255] In some examples, the resource configuration manager 1350 may be configured or otherwise support means for transmitting a signal identifying a resource configuration for the CHEST-RS, the NLEST-RS, or both, wherein the CHEST-RS and the NLEST-RS are transmitted based on the signal identifying the resource configuration, and the resource configuration for the CHEST-RS and the resource configuration for the NLEST-RS include the same resource configuration or different resource configurations.

[0256] In some examples, the repeat manager 1355 may be configured or otherwise support means for transmitting one or more instances of the CHEST-RS according to the repeat pattern of the CHEST-RS, wherein the channel estimation measurement is based on the one or more instances of the CHEST-RS being transmitted.

[0257] In some examples, the boost manager 1365 may be configured or otherwise supported as a means for selecting the transmit power level to be boosted for the CHEST-RS.

[0258] In some examples, the repeat manager 1355 may be configured or otherwise support means for transmitting one or more instances of the NLEST-RS according to the repeat pattern of the NLEST-RS, wherein the nonlinear estimation measurement is based on the one or more instances of the NLEST-RS.

[0259] In some examples, the boost manager 1365 may be configured or otherwise supported as a means for selecting the boost power level for the CHEST-RS.

[0260] In some examples, the multilayer manager 1360 may be configured or otherwise support means for identifying the antenna configuration of the CHEST-RS, wherein the channel estimation measurement is for the antenna configuration and the PA configuration.

[0261] In some examples, the multilayer manager 1360 may be configured or otherwise support means for identifying the antenna configuration of the NLEST-RS, wherein the nonlinear estimation measurement is for the antenna configuration and the PA configuration.

[0262] In some examples, the transmission of the CHEST-RS includes transmission during the first symbol. In some examples, the transmission of the NLEST-RS includes transmission during the second symbol following the first symbol.

[0263] In some examples, the resource configuration manager 1350 may be configured or otherwise support means for transmitting one or more instances of the CHEST-RS and one or more instances of the nonlinear reference signal according to periodic scheduling, semi-persistent scheduling, aperiodic scheduling, or any combination thereof.

[0264] Additionally or alternatively, the communication manager 1320 may support wireless communication at the receiving device according to examples disclosed herein. The dynamic parameter set manager 1345 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from the transmitting device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. In some examples, the NLEST-RS manager 1330 may be configured or otherwise support means for receiving from the transmitting device an NLEST-RS associated with the PA configuration of the transmitting device. In some examples, the dynamic parameter set manager 1345 may be configured or otherwise support means for determining a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set. In some examples, the dynamic parameter set manager 1345 may be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the PA configuration.

[0265] In some examples, the multiplexing conversion manager 1370 may be configured or otherwise supported to enable means for determining whether a transmission of the NLEST-RS is switching from a first multiplexing technique to a second multiplexing technique among one or more multiplexing techniques. In some examples, the multiplexing conversion manager 1370 may be configured or otherwise supported to enable means for receiving the NLEST-RS according to the second multiplexing technique using an index number associated with the NLEST-RS for the first multiplexing technique, based on the dynamic parameter set scheme.

[0266] In some examples, the multiplexing conversion manager 1370 may be configured or otherwise supported to identify the index number associated with the NLEST-RS for the first multiplexing technique based on the dynamic parameter set scheme, wherein the NLEST-RS receives the index number according to the second multiplexing technique.

[0267] In some examples, the first multiplexing technique includes frequency division multiplexing and the second multiplexing technique includes time division multiplexing.

[0268] In some examples, the first multiplexing technique and the second multiplexing technique each include a corresponding time-division multiplexing technique.

[0269] In some examples, the one or more multiplexing techniques include frequency division multiplexing, time division multiplexing, code division multiplexing, or any combination thereof.

[0270] Additionally or alternatively, the communication manager 1320 may support wireless communication at the transmitting device according to examples disclosed herein. In some examples, the dynamic parameter set manager 1345 may be configured or otherwise supported to provide means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted to the receiving device based on corresponding antenna configurations (one or more), each NLEST-RS being associated with a corresponding antenna configuration and PA configuration. In some examples, the NL-RS manager 1340 may be configured or otherwise supported to provide means for transmitting the NLEST-RS associated with the PA configuration of the transmitting device to the receiving device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of which is based on the NLEST-RS and the parameter set. In some examples, the nonlinear communication manager 1335 may be configured or otherwise supported to provide means for communicating with the receiving device based on the nonlinear response of the PA configuration.

[0271] In some examples, the multiplexing conversion manager 1370 may be configured or otherwise supported to enable means for determining that the transmission of the NLEST-RS has switched from a first multiplexing technique to a second multiplexing technique among the one or more multiplexing techniques. In some examples, the multiplexing conversion manager 1370 may be configured or otherwise supported to enable means for transmitting the NLEST-RS according to the second multiplexing technique using an index number associated with the NLEST-RS for the first multiplexing technique, based on the dynamic parameter set scheme.

[0272] In some examples, the multiplexing conversion manager 1370 may be configured or otherwise supported to identify the index number associated with the NLEST-RS for the first multiplexing technique based on the dynamic parameter set scheme, wherein the NLEST-RS transmits according to the second multiplexing technique based on the index number.

[0273] In some examples, the first multiplexing technique includes frequency division multiplexing and the second multiplexing technique includes time division multiplexing.

[0274] In some examples, the first multiplexing technique and the second multiplexing technique each include a corresponding time-division multiplexing technique.

[0275] In some examples, the one or more multiplexing techniques include frequency division multiplexing, time division multiplexing, code division multiplexing, or any combination thereof.

[0276] Figure 14 A diagram of a system 1400 including a device 1405 supporting a nonlinear reference signal design, according to various aspects of this disclosure, is shown. Device 1405 may be an example of device 1105, device 1205, or UE 115 as described herein, or a component including device 1105, device 1205, or UE 115. Device 1405 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. Device 1405 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including a communication manager 1420, an input / output (I / O) controller 1410, a transceiver 1415, an antenna 1425, a memory 1430, a code 1435, and a processor 1440. These components may be in electronic communication or otherwise coupled (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 1445).

[0277] I / O controller 1410 manages the input and output signals of device 1405. I / O controller 1410 can also manage peripheral devices not integrated into device 1405. In some cases, I / O controller 1410 may represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1410 may utilize an operating system, such as... Or another known operating system. Additionally or alternatively, the I / O controller 1410 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 1410 may be implemented as part of a processor (such as processor 1440). In some cases, a user may interact with device 1405 via the I / O controller 1410 or via hardware components controlled by the I / O controller 1410.

[0278] In some cases, device 1405 may include a single antenna 1425. However, in other cases, device 1405 may have more than one antenna 1425, which may be capable of transmitting or receiving multiple wireless transmissions concurrently. Transceiver 1415 may communicate bidirectionally via one or more antennas 1425, wired or wireless links, as described herein. For example, transceiver 1415 may represent a wireless transceiver and be capable of bidirectional communication with another wireless transceiver. Transceiver 1415 may also include a modem for modulating packets, providing modulated packets to one or more antennas 1425 for transmission, and demodulating packets received from one or more antennas 1425. Transceiver 1415, or transceiver 1415 and one or more antennas 1425, may be an example of transmitter 1115, transmitter 1215, receiver 1110, receiver 1210, or any combination thereof or components thereof as described herein.

[0279] Memory 1430 may include random access memory (RAM) and read-only memory (ROM). Memory 1430 may store computer-readable, computer-executable code 1435, including instructions that, when executed by processor 1440, cause device 1405 to perform the various functions described herein. Code 1435 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, code 1435 may not be directly executable by processor 1440, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, memory 1430 may, in particular, include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0280] Processor 1440 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1440 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1440. Processor 1440 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1430) to cause device 1405 to perform various functions (e.g., functions or tasks supporting nonlinear reference signal design). For example, device 1405 or components thereof may include processor 1440 and memory 1430 coupled to processor 1440, wherein processor 1440 and memory 1430 are configured to perform the various functions described herein.

[0281] Communication manager 1420 may support wireless communication at a receiving device according to examples disclosed herein. For example, communication manager 1420 may be configured or otherwise support means for receiving CHEST-RS transmitted over a bandwidth associated with a PA configuration of the transmitting device from the transmitting device. Communication manager 1420 may be configured or otherwise support means for determining a channel estimation measurement associated with the PA configuration based on the CHEST-RS. Communication manager 1420 may be configured or otherwise support means for receiving NLEST-RS transmitted over a subset of the bandwidth associated with the PA configuration from the transmitting device. Communication manager 1420 may be configured or otherwise support means for determining a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying a nonlinear response of the PA configuration. The communication manager 1420 may be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the channel estimation measurement and the PA configuration.

[0282] Additionally or alternatively, the communication manager 1420 may support wireless communication at the transmitting device according to the examples disclosed herein. For example, the communication manager 1420 may be configured or otherwise support means for identifying CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device. The communication manager 1420 may be configured or otherwise support means for transmitting the CHEST-RS transmitted over the bandwidth to the receiving device. The communication manager 1420 may be configured or otherwise support means for transmitting the NLEST-RS transmitted over a subset of the bandwidth to the receiving device. The communication manager 1420 may be configured or otherwise support means for communicating with the receiving device based on: channel estimation measurements based on the CHEST-RS and nonlinear responses of the PA configuration based on the NLEST-RS and the CHEST-RS.

[0283] Additionally or alternatively, the communication manager 1420 may support wireless communication at the receiving device according to examples disclosed herein. For example, the communication manager 1420 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from the transmitting device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. The communication manager 1420 may be configured or otherwise support means for receiving from the transmitting device NLEST-RS associated with the PA configuration of the transmitting device. The communication manager 1420 may be configured or otherwise support means for determining a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set. The communication manager 1420 may be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the PA configuration.

[0284] Additionally or alternatively, the communication manager 1420 may support wireless communication at the transmitting device according to examples disclosed herein. For example, the communication manager 1420 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted to the receiving device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. The communication manager 1420 may be configured or otherwise support means for transmitting the NLEST-RS associated with the PA configuration of the transmitting device to the receiving device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of which is based on the NLEST-RS and the parameter set. The communication manager 1420 may be configured or otherwise support means for communicating with the receiving device based on the nonlinear response of the PA configuration.

[0285] By including or configuring a communication manager 1420 according to an example as described herein, device 1405 can support techniques for improving OTA-DPD and / or DPoD predistortion compensation at the transmitting device, reducing overhead associated with NL-RS transmissions, etc.

[0286] In some examples, the communication manager 1420 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise cooperating with the transceiver 1415, one or more antennas 1425, or any combination thereof. Although the communication manager 1420 is described as a separate component, in some examples, one or more functions described with reference to the communication manager 1420 may be supported or executed by the processor 1440, memory 1430, code 1435, or any combination thereof. For example, code 1435 may include instructions that can be executed by the processor 1440 to cause the device 1405 to perform various aspects of the nonlinear reference signal design as described herein, or the processor 1440 and memory 1430 may be otherwise configured to perform or support such operations.

[0287] Figure 15A diagram of a system 1500 including a device 1505 supporting a nonlinear reference signal design, according to various aspects of this disclosure, is shown. Device 1505 may be an example of device 1105, device 1205, or base station 105 as described herein, or a component including such devices. Device 1505 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. Device 1505 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communication manager 1520, a network communication manager 1510, a transceiver 1515, an antenna 1525, a memory 1530, a code 1535, a processor 1540, and an inter-station communication manager 1545. These components may be in electronic communication or otherwise coupled (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 1550).

[0288] The network communication manager 1510 can manage communication with the core network 130 (e.g., via one or more wired backhaul links). For example, the network communication manager 1510 can manage the delivery of data communication to client devices (such as one or more UEs 115).

[0289] In some cases, device 1505 may include a single antenna 1525. However, in other cases, device 1505 may have more than one antenna 1525, which may be capable of transmitting or receiving multiple wireless transmissions concurrently. Transceiver 1515 may communicate bidirectionally via one or more antennas 1525, wired or wireless links, as described herein. For example, transceiver 1515 may represent a wireless transceiver and be capable of bidirectional communication with another wireless transceiver. Transceiver 1515 may also include a modem for modulating packets, providing modulated packets to one or more antennas 1525 for transmission, and demodulating packets received from one or more antennas 1525. Transceiver 1515, or transceiver 1515 and one or more antennas 1525, may be an example of transmitter 1115, transmitter 1215, receiver 1110, receiver 1210, or any combination thereof or components thereof as described herein.

[0290] Memory 1530 may include RAM and ROM. Memory 1530 may store computer-readable, computer-executable code 1535, including instructions that, when executed by processor 1540, cause device 1505 to perform the various functions described herein. Code 1535 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, code 1535 may not be directly executable by processor 1540, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, memory 1530 may, in particular, include a BIOS that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0291] Processor 1540 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1540 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1540. Processor 1540 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1530) to cause device 1505 to perform various functions (e.g., functions or tasks supporting nonlinear reference signal design). For example, device 1505 or components thereof may include processor 1540 and memory 1530 coupled to processor 1540, wherein processor 1540 and memory 1530 are configured to perform the various functions described herein.

[0292] Inter-site communication manager 1545 manages communication with other base stations 105 and may include a controller or scheduler for cooperating with other base stations 105 to control communication with UE 115. For example, inter-site communication manager 1545 may coordinate the scheduling of transmissions to UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, inter-site communication manager 1545 may provide an X2 interface within LTE / LTE-A wireless communication network technology to facilitate communication between base stations 105.

[0293] Communication manager 1520 may support wireless communication at a receiving device according to examples disclosed herein. For example, communication manager 1520 may be configured or otherwise support means for receiving CHEST-RS transmitted over a bandwidth associated with a PA configuration of the transmitting device from the transmitting device. Communication manager 1520 may be configured or otherwise support means for determining a channel estimation measurement associated with the PA configuration based on the CHEST-RS. Communication manager 1520 may be configured or otherwise support means for receiving NLEST-RS transmitted over a subset of the bandwidth associated with the PA configuration from the transmitting device. Communication manager 1520 may be configured or otherwise support means for determining a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying a nonlinear response of the PA configuration. Communication manager 1520 may be configured or otherwise support means for communicating with a transmitting device based on the channel estimation measurement and the nonlinear response of the PA configuration.

[0294] Additionally or alternatively, the communication manager 1520 may support wireless communication at the transmitting device according to the examples disclosed herein. For example, the communication manager 1520 may be configured or otherwise support means for identifying CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device. The communication manager 1520 may be configured or otherwise support means for transmitting the CHEST-RS transmitted over the bandwidth to the receiving device. The communication manager 1520 may be configured or otherwise support means for transmitting the NLEST-RS transmitted over a subset of the bandwidth to the receiving device. The communication manager 1520 may be configured or otherwise support means for communicating with the receiving device based on: channel estimation measurements based on the CHEST-RS and nonlinear responses of the PA configuration based on the NLEST-RS and the CHEST-RS.

[0295] Additionally or alternatively, the communication manager 1520 may support wireless communication at the receiving device according to examples disclosed herein. For example, the communication manager 1520 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from the transmitting device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. The communication manager 1520 may be configured or otherwise support means for receiving from the transmitting device NLEST-RS associated with the PA configuration of the transmitting device. The communication manager 1520 may be configured or otherwise support means for determining a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set. The communication manager 1520 may be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the PA configuration.

[0296] Additionally or alternatively, the communication manager 1520 may support wireless communication at the transmitting device according to examples disclosed herein. For example, the communication manager 1520 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted to the receiving device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. The communication manager 1520 may be configured or otherwise support means for transmitting the NLEST-RS associated with the PA configuration of the transmitting device to the receiving device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of which is based on the NLEST-RS and the parameter set. The communication manager 1520 may be configured or otherwise support means for communicating with the receiving device based on the nonlinear response of the PA configuration.

[0297] By including or configuring a communication manager 1520 according to an example as described herein, device 1505 can support techniques for improving OTA-DPD and / or DPoD predistortion compensation at the transmitting device, reducing overhead associated with NL-RS transmission, etc.

[0298] In some examples, the communication manager 1520 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise cooperating with the transceiver 1515, one or more antennas 1525, or any combination thereof. Although the communication manager 1520 is described as a separate component, in some examples, one or more functions described with reference to the communication manager 1520 may be supported or executed by the processor 1540, memory 1530, code 1535, or any combination thereof. For example, code 1535 may include instructions that can be executed by the processor 1540 to cause the device 1505 to perform various aspects of the nonlinear reference signal design as described herein, or the processor 1540 and memory 1530 may be otherwise configured to perform or support such operations.

[0299] Figure 16 A block diagram 1600 of a device 1605 designed to support a nonlinear reference signal according to aspects of this disclosure is shown. Device 1605 may be an example of aspects of a UE 115 or base station 105 as described herein. Device 1605 may include a receiver 1610, a transmitter 1615, and a communication manager 1620. Device 1605 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0300] Receiver 1610 may provide means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to nonlinear reference signal design). The information may be transmitted to other components of device 1605. Receiver 1610 may utilize a single antenna or a collection of multiple antennas.

[0301] Transmitter 1615 may provide means for transmitting signals generated by other components of device 1605. For example, transmitter 1615 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to nonlinear reference signal design), user data, control information, or any combination thereof. In some examples, transmitter 1615 may be co-located with receiver 610 in a transceiver module. Transmitter 1615 may utilize a single antenna or a collection of multiple antennas.

[0302] The communication manager 1620, receiver 1610, transmitter 1615, or various combinations thereof, or various components thereof, may be examples of means for performing various aspects of a nonlinear reference signal design as described herein. For example, the communication manager 1620, receiver 1610, transmitter 1615, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0303] In some examples, the communication manager 1620, receiver 1610, transmitter 1615, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuitry system). This hardware may include a processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, configured to serve as or otherwise support means for performing the functions described herein. In some examples, the processor and memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in memory by the processor).

[0304] Additionally or alternatively, in some examples, the communication manager 1620, receiver 1610, transmitter 1615, or various combinations or components thereof, may be implemented by processor-executable code (e.g., as communication management software or firmware). If implemented by processor-executable code, the functionality of the communication manager 1620, receiver 1610, transmitter 1615, or various combinations or components thereof may be performed by a general-purpose processor, DSP, central processing unit (CPU), ASIC, FPGA, or any combination of these or other programmable logic devices (e.g., means configured or otherwise supported for performing the functions described in this disclosure).

[0305] In some examples, the communication manager 1620 may be configured to use or otherwise cooperate with the receiver 1610, transmitter 1615, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, the communication manager 1620 may receive information from the receiver 1610, send information to the transmitter 1615, or be integrated with the receiver 1610, transmitter 1615, or both to receive information, transmit information, or perform various other operations described herein.

[0306] Communication manager 1620 may support wireless communication at a receiving device according to examples disclosed herein. For example, communication manager 1620 may be configured or otherwise support means for receiving CHEST-RS transmitted over a bandwidth associated with a PA configuration of the transmitting device from the transmitting device. Communication manager 1620 may be configured or otherwise support means for determining a channel estimation measurement associated with the PA configuration based on the CHEST-RS. Communication manager 1620 may be configured or otherwise support means for receiving NLEST-RS transmitted over a subset of the bandwidth associated with the PA configuration from the transmitting device. Communication manager 1620 may be configured or otherwise support means for determining a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying a nonlinear response of the PA configuration. The communication manager 1620 can be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the channel estimation measurement and the PA configuration.

[0307] Additionally or alternatively, the communication manager 1620 may support wireless communication at the transmitting device according to the examples disclosed herein. For example, the communication manager 1620 may be configured or otherwise support means for identifying CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device. The communication manager 1620 may be configured or otherwise support means for transmitting the CHEST-RS transmitted over the bandwidth to the receiving device. The communication manager 1620 may be configured or otherwise support means for transmitting the NLEST-RS transmitted over a subset of the bandwidth to the receiving device. The communication manager 1620 may be configured or otherwise support means for communicating with the receiving device based on: channel estimation measurements based on the CHEST-RS and nonlinear responses of the PA configuration based on the NLEST-RS and the CHEST-RS.

[0308] Additionally or alternatively, the communication manager 1620 may support wireless communication at the receiving device according to examples disclosed herein. For example, the communication manager 1620 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from the transmitting device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. The communication manager 1620 may be configured or otherwise support means for receiving from the transmitting device NLEST-RS associated with the PA configuration of the transmitting device. The communication manager 1620 may be configured or otherwise support means for determining a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set. The communication manager 1620 may be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the PA configuration.

[0309] Additionally or alternatively, the communication manager 1620 may support wireless communication at the transmitting device according to examples disclosed herein. For example, the communication manager 1620 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted to the receiving device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. The communication manager 1620 may be configured or otherwise support means for transmitting the NLEST-RS associated with the PA configuration of the transmitting device to the receiving device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of which is based on the NLEST-RS and the parameter set. The communication manager 1620 may be configured or otherwise support means for communicating with the receiving device based on the nonlinear response of the PA configuration.

[0310] By including or configuring a communication manager 1620 according to an example as described herein, device 1605 (e.g., a processor that controls or otherwise couples to receiver 1610, transmitter 1615, communication manager 1620, or a combination thereof) can support techniques for improving OTA-DPD and / or DPoD predistortion compensation at the transmitting device, reducing overhead associated with NL-RS transmission, etc.

[0311] Figure 17A block diagram 1700 of a device 1705 designed to support a nonlinear reference signal according to aspects of this disclosure is shown. Device 1705 may be an example of aspects of device 1605, UE 115, or base station 105 as described herein. Device 1705 may include a receiver 1710, a transmitter 1715, and a communication manager 1720. Device 1705 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0312] Receiver 1710 may provide means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to nonlinear reference signal design). The information may be transmitted to other components of device 1705. Receiver 1710 may utilize a single antenna or a collection of multiple antennas.

[0313] Transmitter 1715 may provide means for transmitting signals generated by other components of device 1705. For example, transmitter 1715 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to nonlinear reference signal design), user data, control information, or any combination thereof. In some examples, transmitter 1715 may be co-located with receiver 1710 in a transceiver module. Transmitter 1715 may utilize a single antenna or a collection of multiple antennas.

[0314] Device 1705 or its various components may be examples of means for performing various aspects of a nonlinear reference signal design as described herein. For example, communication manager 1720 may include CHEST-RS manager 1725, NLEST-RS manager 1730, nonlinear communication manager 1735, NL-RS manager 1740, dynamic parameter set manager 1745, or any combination thereof. Communication manager 1720 may be examples of various aspects of communication manager 1620 as described herein. In some examples, communication manager 1720 or its various components may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using receiver 1710, transmitter 1715, or both, or otherwise in cooperation with receiver 1710, transmitter 1715, or both. For example, communication manager 1720 may receive information from receiver 1710, send information to transmitter 1715, or be integrated with receiver 1710, transmitter 1715, or both to receive information, transmit information, or perform various other operations described herein.

[0315] Communication manager 1720 may support wireless communication at the receiving device according to examples disclosed herein. CHEST-RS manager 1725 may be configured or otherwise support means for receiving CHEST-RS transmitted over a bandwidth from the transmitting device, the CHEST-RS being associated with a PA configuration of the transmitting device. CHEST-RS manager 1725 may be configured or otherwise support means for determining a channel estimation measurement associated with the PA configuration based on the CHEST-RS. NLEST-RS manager 1730 may be configured or otherwise support means for receiving NLEST-RS transmitted over a subset of the bandwidth from the transmitting device, the NLEST-RS being associated with the PA configuration. NLEST-RS manager 1730 may be configured or otherwise support means for determining a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying a nonlinear response of the PA configuration. The nonlinear communication manager 1735 can be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the channel estimation measurement and the PA configuration.

[0316] Additionally or alternatively, the communication manager 1720 may support wireless communication at the transmitting device according to the examples disclosed herein. The NL-RS manager 1740 may be configured or otherwise support means for identifying the CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device. The CHEST-RS manager 1725 may be configured or otherwise support means for transmitting the CHEST-RS transmitted over the bandwidth to the receiving device. The NLEST-RS manager 1730 may be configured or otherwise support means for transmitting the NLEST-RS transmitted over a subset of the bandwidth to the receiving device. The nonlinear communication manager 1735 may be configured or otherwise support means for communicating with the receiving device based on: channel estimation measurements based on the CHEST-RS and nonlinear responses based on the PA configuration of the NLEST-RS and the CHEST-RS.

[0317] Additionally or alternatively, the communication manager 1720 may support wireless communication at the receiving device according to examples disclosed herein. The dynamic parameter set manager 1745 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from the transmitting device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. The NLEST-RS manager 1730 may be configured or otherwise support means for receiving from the transmitting device NLEST-RS associated with the PA configuration of the transmitting device. The dynamic parameter set manager 1745 may be configured or otherwise support means for determining a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set. The dynamic parameter set manager 1745 may be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the PA configuration.

[0318] Additionally or alternatively, the communication manager 1720 may support wireless communication at the transmitting device according to examples disclosed herein. The dynamic parameter set manager 1745 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted to the receiving device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. The NL-RS manager 1740 may be configured or otherwise support means for transmitting the NLEST-RS associated with the PA configuration of the transmitting device to the receiving device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of which is based on the NLEST-RS and the parameter set. The nonlinear communication manager 1735 may be configured or otherwise support means for communicating with the receiving device based on the nonlinear response of the PA configuration.

[0319] Figure 18A block diagram 1800 of a communication manager 1820 supporting a nonlinear reference signal design according to various aspects of this disclosure is shown. The communication manager 1820 may be an example of the communication manager 1620, communication manager 1720, or aspects of both described herein. The communication manager 1820 or its various components may be examples of means for performing various aspects of a nonlinear reference signal design as described herein. For example, the communication manager 1820 may include a CHEST-RS manager 1825, an NLEST-RS manager 1830, a nonlinear communication manager 1835, an NL-RS manager 1840, a dynamic parameter set manager 1845, a resource configuration manager 1850, a repeat manager 1855, a multilayer manager 1860, a boost manager 1865, a multiplexing conversion manager 1870, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0320] Communication manager 1820 may support wireless communication at the receiving device according to examples disclosed herein. CHEST-RS manager 1825 may be configured or otherwise support means for receiving CHEST-RS transmitted over a bandwidth from the transmitting device, the CHEST-RS being associated with the PA configuration of the transmitting device. In some examples, CHEST-RS manager 1825 may be configured or otherwise support means for determining a channel estimation measurement associated with the PA configuration based on the CHEST-RS. NLEST-RS manager 1830 may be configured or otherwise support means for receiving NLEST-RS transmitted over a subset of the bandwidth from the transmitting device, the NLEST-RS being associated with the PA configuration. In some examples, NLEST-RS manager 1830 may be configured or otherwise support means for determining a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying a nonlinear response of the PA configuration. The nonlinear communication manager 1835 can be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the channel estimation measurement and the PA configuration.

[0321] In some examples, the resource configuration manager 1850 may be configured or otherwise supported to receive a signal identifying a resource configuration for the CHEST-RS, the NLEST-RS, or both, wherein the CHEST-RS and the NLEST-RS receive the signal based on receiving the signal identifying the resource configuration, and the resource configuration for the CHEST-RS and the resource configuration for the NLEST-RS may include the same resource configuration or different resource configurations.

[0322] In some examples, the repeat manager 1855 may be configured or otherwise support means for receiving one or more instances of the CHEST-RS according to the repeat pattern of the CHEST-RS, wherein the channel estimation measurement is based on the one or more instances of receiving the CHEST-RS.

[0323] In some examples, the repeat manager 1855 may be configured or otherwise supported as means for receiving one or more instances of the NLEST-RS according to the repeat pattern of the NLEST-RS, wherein the nonlinear estimation measurement is based on the one or more instances of the NLEST-RS.

[0324] In some examples, the multilayer manager 1860 may be configured or otherwise support means for identifying the antenna configuration of the CHEST-RS, wherein the channel estimation measurement is for the antenna configuration and the PA configuration.

[0325] In some examples, the multilayer manager 1860 may be configured or otherwise support means for identifying the antenna configuration of the NLEST-RS, wherein the nonlinear estimation measurement is for the antenna configuration and the PA configuration.

[0326] In some examples, receiving the CHEST-RS includes receiving it during the first symbol period. In some examples, receiving the NLEST-RS includes receiving it during the second symbol period after the first symbol period.

[0327] In some examples, the resource configuration manager 1850 may be configured or otherwise support means for receiving one or more instances of the CHEST-RS and one or more instances of the nonlinear reference signal according to periodic scheduling, semi-persistent scheduling, aperiodic scheduling, or any combination thereof.

[0328] Additionally or alternatively, the communication manager 1820 may support wireless communication at the transmitting device according to the examples disclosed herein. The NL-RS manager 1840 may be configured or otherwise support means for identifying the CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device. In some examples, the CHEST-RS manager 1825 may be configured or otherwise support means for transmitting the CHEST-RS transmitted over the bandwidth to the receiving device. In some examples, the NLEST-RS manager 1830 may be configured or otherwise support means for transmitting the NLEST-RS transmitted over a subset of the bandwidth to the receiving device. In some examples, the nonlinear communication manager 1835 may be configured or otherwise support means for communicating with the receiving device based on: channel estimation measurements based on the CHEST-RS and nonlinear responses based on the PA configuration of the NLEST-RS and the CHEST-RS.

[0329] In some examples, the resource configuration manager 1850 may be configured or otherwise support means for transmitting a signal identifying a resource configuration for the CHEST-RS, the NLEST-RS, or both, wherein the CHEST-RS and the NLEST-RS are transmitted based on the signal identifying the resource configuration, and the resource configuration for the CHEST-RS and the resource configuration for the NLEST-RS include the same resource configuration or different resource configurations.

[0330] In some examples, the repeat manager 1855 may be configured or otherwise support means for transmitting one or more instances of the CHEST-RS according to the repeat pattern of the CHEST-RS, wherein the channel estimation measurement is based on the one or more instances of the CHEST-RS being transmitted.

[0331] In some examples, the boost manager 1865 may be configured or otherwise supported as a means for selecting the transmit power level to be boosted for the CHEST-RS.

[0332] In some examples, the repeat manager 1855 may be configured or otherwise support means for transmitting one or more instances of the NLEST-RS according to the repeat pattern of the NLEST-RS, wherein the nonlinear estimation measurement is based on the one or more instances of the NLEST-RS.

[0333] In some examples, the boost manager 1865 may be configured or otherwise supported as a means for selecting the boost transmit power level for the CHEST-RS.

[0334] In some examples, the multilayer manager 1860 may be configured or otherwise support means for identifying the antenna configuration of the CHEST-RS, wherein the channel estimation measurement is for the antenna configuration and the PA configuration.

[0335] In some examples, the multilayer manager 1860 may be configured or otherwise support means for identifying the antenna configuration of the NLEST-RS, wherein the nonlinear estimation measurement is for the antenna configuration and the PA configuration.

[0336] In some examples, the transmission of the CHEST-RS includes transmission during the first symbol. In some examples, the transmission of the NLEST-RS includes transmission during the second symbol following the first symbol.

[0337] In some examples, the resource configuration manager 1850 may be configured or otherwise support means for transmitting one or more instances of the CHEST-RS and one or more instances of the nonlinear reference signal according to periodic scheduling, semi-persistent scheduling, aperiodic scheduling, or any combination thereof.

[0338] Additionally or alternatively, the communication manager 1820 may support wireless communication at the receiving device according to examples disclosed herein. The dynamic parameter set manager 1845 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from the transmitting device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. In some examples, the NLEST-RS manager 1830 may be configured or otherwise support means for receiving from the transmitting device an NLEST-RS associated with the transmitting device's PA configuration. In some examples, the dynamic parameter set manager 1845 may be configured or otherwise support means for determining a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set. In some examples, the dynamic parameter set manager 1845 may be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the PA configuration.

[0339] In some examples, the multiplexing conversion manager 1870 may be configured or otherwise supported to enable means for determining whether a transmission of the NLEST-RS is switching from a first multiplexing technique to a second multiplexing technique among one or more multiplexing techniques. In some examples, the multiplexing conversion manager 1870 may be configured or otherwise supported to enable means for receiving the NLEST-RS according to the second multiplexing technique using an index number associated with the NLEST-RS for the first multiplexing technique, based on the dynamic parameter set scheme.

[0340] In some examples, the multiplexing conversion manager 1870 may be configured or otherwise supported to enable means for identifying the index number associated with the NLEST-RS for the first multiplexing technique based on the dynamic parameter set scheme, wherein the NLEST-RS receives the index number according to the second multiplexing technique.

[0341] In some examples, the first multiplexing technique includes frequency division multiplexing and the second multiplexing technique includes time division multiplexing.

[0342] In some examples, the first multiplexing technique and the second multiplexing technique each include a corresponding time-division multiplexing technique.

[0343] In some examples, the one or more multiplexing techniques include frequency division multiplexing, time division multiplexing, code division multiplexing, or any combination thereof.

[0344] Additionally or alternatively, the communication manager 1820 may support wireless communication at the transmitting device according to examples disclosed herein. In some examples, the dynamic parameter set manager 1845 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted to the receiving device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. In some examples, the NL-RS manager 1840 may be configured or otherwise support means for transmitting the NLEST-RS associated with the PA configuration of the transmitting device to the receiving device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of which is based on the NLEST-RS and the parameter set. In some examples, the nonlinear communication manager 1835 may be configured or otherwise support means for communicating with the receiving device based on the nonlinear response of the PA configuration.

[0345] In some examples, the multiplexing conversion manager 1870 may be configured or otherwise supported to determine that the transmission of the NLEST-RS has switched from a first multiplexing technique to a second multiplexing technique among the one or more multiplexing techniques. In some examples, the multiplexing conversion manager 1870 may be configured or otherwise supported to transmit the NLEST-RS according to the second multiplexing technique using an index number associated with the NLEST-RS used for the first multiplexing technique, based on the dynamic parameter set scheme.

[0346] In some examples, the multiplexing conversion manager 1870 may be configured or otherwise supported to identify the index number associated with the NLEST-RS for the first multiplexing technique based on the dynamic parameter set scheme, wherein the NLEST-RS transmits according to the second multiplexing technique based on the index number.

[0347] In some examples, the first multiplexing technique includes frequency division multiplexing and the second multiplexing technique includes time division multiplexing.

[0348] In some examples, the first multiplexing technique and the second multiplexing technique each include a corresponding time-division multiplexing technique.

[0349] In some examples, the one or more multiplexing techniques include frequency division multiplexing, time division multiplexing, code division multiplexing, or any combination thereof.

[0350] Figure 19 A diagram of a system 1900 including a device 1905 supporting a nonlinear reference signal design, according to various aspects of this disclosure, is shown. Device 1905 may be an example of device 1605, device 1705, or base station 105 as described herein, or a component including such devices. Device 1905 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. Device 1905 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communication manager 1920, a network communication manager 1910, a transceiver 1915, an antenna 1925, a memory 1930, a code 1935, a processor 1940, and an inter-station communication manager 1945. These components may be in electronic communication or otherwise coupled (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 1950).

[0351] The network communication manager 1910 can manage communication with the core network 130 (e.g., via one or more wired backhaul links). For example, the network communication manager 1910 can manage the delivery of data communication to client devices (such as one or more UEs 115).

[0352] In some cases, device 1905 may include a single antenna 1925. However, in other cases, device 1905 may have more than one antenna 1925, which may be capable of transmitting or receiving multiple wireless transmissions concurrently. Transceiver 1915 may communicate bidirectionally via one or more antennas 1925, wired or wireless links, as described herein. For example, transceiver 1915 may represent a wireless transceiver and be capable of bidirectional communication with another wireless transceiver. Transceiver 1915 may also include a modem for modulating packets, providing modulated packets to one or more antennas 1925 for transmission, and demodulating packets received from one or more antennas 1925. Transceiver 1915, or transceiver 1915 and one or more antennas 1925, may be an example of transmitter 1615, transmitter 1715, receiver 1610, receiver 1710, or any combination thereof or components thereof as described herein.

[0353] Memory 1930 may include random access memory (RAM) and read-only memory (ROM). Memory 1930 may store computer-readable, computer-executable code 1935, including instructions that, when executed by processor 1940, cause device 1905 to perform the various functions described herein. Code 1935 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, code 1935 may not be directly executable by processor 1940, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, memory 1930 may, in particular, include a basic input / output (I / O) system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0354] Processor 1940 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1940 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1940. Processor 1940 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1930) to cause device 1905 to perform various functions (e.g., functions or tasks supporting nonlinear reference signal design). For example, device 1905 or components thereof may include processor 1940 and memory 1930 coupled to processor 1940, wherein processor 1940 and memory 1930 are configured to perform the various functions described herein.

[0355] Inter-site communication manager 1945 manages communication with other base stations 105 and may include a controller or scheduler for cooperating with other base stations 105 to control communication with UE 115. For example, inter-site communication manager 1945 may coordinate the scheduling of transmissions to UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, inter-site communication manager 1945 may provide an X2 interface within LTE / LTE-A wireless communication network technology to facilitate communication between base stations 105.

[0356] Communication manager 1920 may support wireless communication at a receiving device according to the examples disclosed herein. For example, communication manager 1920 may be configured or otherwise support means for receiving CHEST-RS transmitted over a bandwidth associated with a PA configuration of the transmitting device from the transmitting device. Communication manager 1920 may be configured or otherwise support means for determining a channel estimation measurement associated with the PA configuration based on the CHEST-RS. Communication manager 1920 may be configured or otherwise support means for receiving NLEST-RS transmitted over a subset of the bandwidth associated with the PA configuration from the transmitting device. Communication manager 1920 may be configured or otherwise support means for determining a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying a nonlinear response of the PA configuration. The communication manager 1920 can be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the channel estimation measurement and the PA configuration.

[0357] Additionally or alternatively, the communication manager 1920 may support wireless communication at the transmitting device according to the examples disclosed herein. For example, the communication manager 1920 may be configured or otherwise support means for identifying CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device. The communication manager 1920 may be configured or otherwise support means for transmitting the CHEST-RS transmitted over the bandwidth to the receiving device. The communication manager 1920 may be configured or otherwise support means for transmitting the NLEST-RS transmitted over a subset of the bandwidth to the receiving device. The communication manager 1920 may be configured or otherwise support means for communicating with the receiving device based on: channel estimation measurements based on the CHEST-RS and nonlinear responses of the PA configuration based on the NLEST-RS and the CHEST-RS.

[0358] Additionally or alternatively, the communication manager 1920 may support wireless communication at the receiving device according to examples disclosed herein. For example, the communication manager 1920 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from the transmitting device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. The communication manager 1920 may be configured or otherwise support means for receiving from the transmitting device NLEST-RS associated with the PA configuration of the transmitting device. The communication manager 1920 may be configured or otherwise support means for determining a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set. The communication manager 1920 may be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the PA configuration.

[0359] Additionally or alternatively, the communication manager 1920 may support wireless communication at the transmitting device according to examples disclosed herein. For example, the communication manager 1920 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted to the receiving device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. The communication manager 1920 may be configured or otherwise support means for transmitting the NLEST-RS associated with the PA configuration of the transmitting device to the receiving device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of which is based on the NLEST-RS and the parameter set. The communication manager 1920 may be configured or otherwise support means for communicating with the receiving device based on the nonlinear response of the PA configuration.

[0360] By including or configuring a communication manager 1920 according to an example as described herein, device 1905 can support techniques for improving OTA-DPD and / or DPoD predistortion compensation at the transmitting device, reducing overhead associated with NL-RS transmissions, etc.

[0361] In some examples, the communication manager 1920 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise cooperating with the transceiver 1915, one or more antennas 1925, or any combination thereof. Although the communication manager 1920 is described as a separate component, in some examples, one or more functions described with reference to the communication manager 1920 may be supported or executed by the processor 1940, memory 1930, code 1935, or any combination thereof. For example, code 1935 may include instructions that can be executed by the processor 1940 to cause the device 1905 to perform various aspects of the nonlinear reference signal design as described herein, or the processor 1940 and memory 1930 may be otherwise configured to perform or support such operations.

[0362] Figure 20 A diagram of a system 2000 including a device 2005 supporting a nonlinear reference signal design is shown according to various aspects of this disclosure. Device 2005 may be an example of device 1605, device 1705, or UE 115 as described herein, or a component including device 1605, device 1705, or UE 115. Device 2005 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. Device 2005 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communication manager 2020, I / O controller 2010, transceiver 2015, antenna 2025, memory 2030, code 2035, and processor 2040. These components may be in electronic communication or otherwise coupled (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 2045).

[0363] The I / O controller 2010 manages the input and output signals of the device 2005. The I / O controller 2010 can also manage peripheral devices not integrated into the device 2005. In some cases, the I / O controller 2010 may represent a physical connection or port to an external peripheral device. In some cases, the I / O controller 2010 may utilize an operating system, such as... Or another known operating system. Additionally or alternatively, the I / O controller 2010 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 2010 may be implemented as part of a processor (such as processor 2040). In some cases, a user may interact with device 2005 via the I / O controller 2010 or via hardware components controlled by the I / O controller 2010.

[0364] In some cases, device 2005 may include a single antenna 2025. However, in other cases, device 2005 may have more than one antenna 2025, which may be capable of transmitting or receiving multiple wireless transmissions concurrently. Transceiver 2015 may communicate bidirectionally via one or more antennas 2025, wired or wireless links, as described herein. For example, transceiver 2015 may represent a wireless transceiver and be capable of bidirectional communication with another wireless transceiver. Transceiver 2015 may also include a modem for modulating packets, providing modulated packets to one or more antennas 2025 for transmission, and demodulating packets received from one or more antennas 2025. Transceiver 2015, or transceiver 2015 and one or more antennas 2025, may be an example of transmitter 1615, transmitter 1715, receiver 1610, receiver 1710, or any combination thereof or components thereof as described herein.

[0365] Memory 2030 may include RAM and ROM. Memory 2030 may store computer-readable, computer-executable code 2035, including instructions that, when executed by processor 2040, cause device 2005 to perform the various functions described herein. Code 2035 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, code 2035 may not be directly executable by processor 2040, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, memory 2030 may, in particular, include a BIOS that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0366] Processor 2040 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 2040 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 2040. Processor 2040 may be configured to execute computer-readable instructions stored in memory (e.g., memory 2030) to cause device 2005 to perform various functions (e.g., functions or tasks supporting the design of nonlinear reference signals). For example, device 2005 or components thereof may include processor 2040 and memory 2030 coupled to processor 2040, wherein processor 2040 and memory 2030 are configured to perform the various functions described herein.

[0367] The Communication Manager 2020 can support wireless communication at a receiving device according to examples disclosed herein. For example, the Communication Manager 2020 can be configured or otherwise supported to support means for receiving CHEST-RS transmitted over a bandwidth associated with a PA configuration of the transmitting device. The Communication Manager 2020 can be configured or otherwise supported to support means for determining a channel estimation measurement associated with the PA configuration based on the CHEST-RS. The Communication Manager 2020 can be configured or otherwise supported to support means for receiving NLEST-RS transmitted over a subset of the bandwidth associated with the PA configuration from the transmitting device. The Communication Manager 2020 can be configured or otherwise supported to support means for determining a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying a nonlinear response of the PA configuration. The Communication Manager 2020 can be configured or otherwise supports means for communicating with the transmitting device based on the nonlinear response of the channel estimation measurement and the PA configuration.

[0368] Additionally or alternatively, the communication manager 2020 may support wireless communication at the transmitting device according to the examples disclosed herein. For example, the communication manager 2020 may be configured or otherwise support means for identifying CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device. The communication manager 2020 may be configured or otherwise support means for transmitting the CHEST-RS transmitted over the bandwidth to the receiving device. The communication manager 2020 may be configured or otherwise support means for transmitting the NLEST-RS transmitted over a subset of the bandwidth to the receiving device. The communication manager 2020 may be configured or otherwise support means for communicating with the receiving device based on: channel estimation measurements based on the CHEST-RS and nonlinear responses of the PA configuration based on the NLEST-RS and the CHEST-RS.

[0369] Additionally or alternatively, the communication manager 2020 may support wireless communication at the receiving device according to examples disclosed herein. For example, the communication manager 2020 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from the transmitting device based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. The communication manager 2020 may be configured or otherwise support means for receiving from the transmitting device NLEST-RS associated with the PA configuration of the transmitting device. The communication manager 2020 may be configured or otherwise support means for determining a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set. The communication manager 2020 may be configured or otherwise support means for communicating with the transmitting device based on the nonlinear response of the PA configuration.

[0370] Additionally or alternatively, the communication manager 2020 may support wireless communication at the transmitting device according to examples disclosed herein. For example, the communication manager 2020 may be configured or otherwise support means for determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted to a receiving device based on corresponding antenna configurations (one or more), each NLEST-RS being associated with a corresponding antenna configuration and PA configuration. The communication manager 2020 may be configured or otherwise support means for transmitting the NLEST-RS associated with the PA configuration of the transmitting device to the receiving device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and a nonlinear response of the PA configuration, the nonlinear response of which is based on the NLEST-RS and the parameter set. The communication manager 2020 may be configured or otherwise support means for communicating with the receiving device based on the nonlinear response of the PA configuration.

[0371] By including or configuring a communication manager 2020 according to an example as described herein, device 2005 can support techniques for improving OTA-DPD and / or DPoD predistortion compensation at the transmitting device, reducing overhead associated with NL-RS transmission, etc.

[0372] In some examples, the communication manager 2020 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise cooperating with transceiver 2015, one or more antennas 2025, or any combination thereof. Although the communication manager 2020 is described as a separate component, in some examples, one or more functions described with reference to the communication manager 2020 may be supported or executed by processor 2040, memory 2030, code 2035, or any combination thereof. For example, code 2035 may include instructions that can be executed by processor 2040 to cause device 2005 to perform various aspects of the nonlinear reference signal design as described herein, or processor 2040 and memory 2030 may be otherwise configured to perform or support such operations.

[0373] Figure 21 A flowchart illustrating a method 2100 for supporting nonlinear reference signal design according to various aspects of this disclosure is shown. Operation of method 2100 can be implemented by a UE or base station or its components as described herein. For example, operation of method 2100 can be performed by a reference... Figures 1 to 15 The UE 115 or base station 105 described herein shall perform the functions. In some examples, the UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the described functions. Alternatively or additionally, the UE or base station may use dedicated hardware to perform aspects of the described functions.

[0374] At 2105, the method may include receiving, from a transmitting device, a CHEST-RS transmitted over a bandwidth, the CHEST-RS being associated with the PA configuration of the transmitting device. Operation of 2105 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2105 may be provided by reference to... Figure 13 The CHEST-RS Manager 1325 described is used to execute this.

[0375] In 2110, the method may include determining channel estimation measurements associated with the PA configuration based on the CHEST-RS. The operation of 2110 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2110 may be determined by reference to... Figure 13 The CHEST-RS Manager 1325 described is used to execute this.

[0376] In 2115, the method may include receiving from the transmitting device an NLEST-RS transmitted on a subset of the bandwidth, the NLEST-RS being associated with the PA configuration. Operation of 2115 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2115 may be provided by reference to... Figure 13The NLEST-RS Manager 1330 described is used to execute this.

[0377] At 2120, the method may include determining a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying the nonlinear response of the PA configuration. Operation of 2120 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2120 may be provided by reference to... Figure 13 The NLEST-RS Manager 1330 described is used to execute this.

[0378] At 2125, the method may include communicating with the transmitting device based on the nonlinear response of the channel estimation measurement and the PA configuration. Operation of 2125 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2125 may be provided by reference to... Figure 13 The non-linear communication manager 1335 described herein is used for execution.

[0379] Figure 22 A flowchart illustrating a method 2200 for supporting nonlinear reference signal design according to various aspects of this disclosure is shown. Operation of method 2200 can be implemented by a UE or base station or its components as described herein. For example, operation of method 2200 can be performed by a reference signal... Figures 1 to 15 The UE 115 or base station 105 described herein shall perform the functions. In some examples, the UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the described functions. Alternatively or additionally, the UE or base station may use dedicated hardware to perform aspects of the described functions.

[0380] In 2205, the method may include receiving a signal identifying a resource configuration for the CHEST-RS, the NLEST-RS, or both, wherein the CHEST-RS and the NLEST-RS receive the signal identifying the resource configuration based on receiving the signal, the resource configuration for the CHEST-RS and the resource configuration for the NLEST-RS including the same resource configuration or different resource configurations. Operation of 2205 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2205 may be provided by reference to... Figure 13 The described Resource Configuration Manager 1350 is used to execute this.

[0381] In 2210, the method may include receiving, from a transmitting device, a CHEST-RS transmitted over a bandwidth, the CHEST-RS being associated with the PA configuration of the transmitting device. Operation of 2210 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2210 may be provided by reference to... Figure 13The CHEST-RS Manager 1325 described is used to execute this.

[0382] In 2215, the method may include determining channel estimation measurements associated with the PA configuration based on the CHEST-RS. Operation of 2215 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 2215 may be derived from, as referenced... Figure 13 The CHEST-RS Manager 1325 described is used to execute this.

[0383] In 2220, the method may include receiving from the transmitting device an NLEST-RS transmitted on a subset of the bandwidth, the NLEST-RS being associated with the PA configuration. Operation of 2220 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2220 may be provided by reference to... Figure 13 The NLEST-RS Manager 1330 described is used to execute this.

[0384] In 2225, the method may include determining a nonlinear estimation measurement associated with the PA configuration based on the NLEST-RS and the CHEST-RS, the nonlinear estimation measurement identifying the nonlinear response of the PA configuration. Operation of 2225 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2225 may be provided by reference to... Figure 13 The NLEST-RS Manager 1330 described is used to execute this.

[0385] In 2230, the method may include communicating with the transmitting device based on the nonlinear response of the channel estimation measurement and the PA configuration. Operation of 2230 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2230 may be provided by reference to... Figure 13 The non-linear communication manager 1335 described herein is used for execution.

[0386] Figure 23 A flowchart illustrating a method 2300 for supporting nonlinear reference signal design according to various aspects of this disclosure is shown. The operation of method 2300 can be implemented by a base station or UE or its components as described herein. For example, the operation of method 2300 can be implemented by a base station or UE or its components as described herein. Figures 1 to 10 and Figures 16 to 20 The described base station 105 or UE 115 performs this function. In some examples, the base station or UE may execute a set of instructions to control the functional elements of the base station or UE to perform the described functions. Alternatively or alternatively, the base station or UE may use dedicated hardware to perform aspects of the described functions.

[0387] In 2305, the method may include identifying the CHEST-RS and NLEST-RS associated with the PA configuration of the transmitting device. Operation of 2305 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2305 may be provided by reference to... Figure 18 The NL-RS Manager 1840 described is used to execute this.

[0388] In 2310, the method may include transmitting the CHEST-RS transmitted over the bandwidth to a receiving device. Operation of 2310 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2310 may be provided by reference to... Figure 18 The CHEST-RS Manager 1825 described is used to execute this.

[0389] In 2315, the method may include transmitting to the receiving device the NLEST-RS transmitted on a subset of the bandwidth. Operation of 2315 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2315 may be provided by reference to... Figure 18 The NLEST-RS Manager 1830 described is used to execute this.

[0390] In 2320, the method may include communicating with the receiving device based on: channel estimation measurements based on the CHEST-RS and nonlinear responses based on the PA configuration of the NLEST-RS and the CHEST-RS. Operation of 2320 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2320 may be derived from, as referenced... Figure 18 The described nonlinear communication manager 1835 is used to execute this.

[0391] Figure 24 A flowchart illustrating a method 2400 for supporting nonlinear reference signal design according to various aspects of this disclosure is shown. The operation of method 2400 can be implemented by a UE or base station or its components as described herein. For example, the operation of method 2400 can be implemented by a reference... Figures 1 to 15 The UE 115 or base station 105 described herein shall perform the functions. In some examples, the UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the described functions. Alternatively or additionally, the UE or base station may use dedicated hardware to perform aspects of the described functions.

[0392] In 2405, the method may include determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from the transmitting device, based on corresponding antenna configurations for one or more antenna configurations, each NLEST-RS being associated with a corresponding antenna configuration and PA configuration. Operation of 2405 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 2405 may be provided by reference to... Figure 13 The described dynamic parameter set manager 1345 is used for execution.

[0393] In 2410, the method may include receiving NLEST-RS associated with the PA configuration of the transmitting device from the transmitting device. Operation of 2410 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2410 may be provided by reference to... Figure 13 The NLEST-RS Manager 1330 described is used to execute this.

[0394] In 2415, the method may include determining a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and the nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set. Operation of 2415 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2415 may be determined by reference to... Figure 13 The described dynamic parameter set manager 1345 is used for execution.

[0395] At 2420, the method may include communicating with the transmitting device based on the nonlinear response configured for the PA. Operation of 2420 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2420 may be determined by reference to... Figure 13 The described dynamic parameter set manager 1345 is used for execution.

[0396] Figure 25 A flowchart illustrating a method 2500 for supporting nonlinear reference signal design according to various aspects of this disclosure is shown. The operation of method 2500 can be implemented by a UE or base station or its components as described herein. For example, the operation of method 2500 can be implemented by a reference... Figures 1 to 15 The UE 115 or base station 105 described herein shall perform the functions. In some examples, the UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the described functions. Alternatively or additionally, the UE or base station may use dedicated hardware to perform aspects of the described functions.

[0397] In 2505, the method may include determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted from the transmitting device, based on corresponding antenna configurations (one or more), each NLEST-RS associated with a corresponding antenna configuration and PA configuration. Operation of 2505 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 2505 may be determined by reference to... Figure 13 The described dynamic parameter set manager 1345 is used for execution.

[0398] In 2510, the method may include receiving NLEST-RS associated with the PA configuration of the transmitting device from the transmitting device. Operation of 2510 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2510 may be provided by reference to... Figure 13 The NLEST-RS Manager 1330 described is used to execute this.

[0399] In 2515, the method may include determining a parameter set associated with the NLEST-RS based on the dynamic parameter set scheme and the nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set. Operation of 2515 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2515 may be determined by reference to... Figure 13 The described dynamic parameter set manager 1345 is used for execution.

[0400] In 2520, the method may include communicating with the transmitting device based on the nonlinear response configured for the PA. Operation of 2520 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2520 may be determined by reference to... Figure 13 The described dynamic parameter set manager 1345 is used for execution.

[0401] In 2525, the method may include determining whether the NLEST-RS transmission is switching from a first multiplexing technique to a second multiplexing technique among one or more multiplexing techniques. The operation of 2525 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2525 may be determined by reference to... Figure 13 The described multiplexing conversion manager 1370 is used to perform this.

[0402] In 2530, the method may include receiving the NLEST-RS according to the second multiplexing technique using an index number associated with the NLEST-RS used for the first multiplexing technique, based on the dynamic parameter set scheme. Operation of 2530 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2530 may be provided as referenced... Figure 13 The described multiplexing conversion manager 1370 is used to perform this.

[0403] Figure 26 A flowchart illustrating a method 2600 for supporting nonlinear reference signal design according to various aspects of this disclosure is shown. The operation of method 2600 can be implemented by a base station or UE or its components as described herein. For example, the operation of method 2600 can be implemented by, as described in the reference... Figures 1 to 10 and Figures 16 to 20 The described base station 105 or UE 115 performs this function. In some examples, the base station or UE may execute a set of instructions to control the functional elements of the base station or UE to perform the described functions. Alternatively or alternatively, the base station or UE may use dedicated hardware to perform aspects of the described functions.

[0404] In 2605, the method may include determining a dynamic parameter set scheme associated with one or more NLEST-RS to be transmitted to a receiving device, based on corresponding antenna configurations for one or more antenna configurations, each NLEST-RS being associated with a corresponding antenna configuration and PA configuration. Operation of 2605 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 2605 may be provided by reference to... Figure 18 The described dynamic parameter set manager 1845 is used for execution.

[0405] In 2610, the method may include transmitting to the receiving device the NLEST-RS associated with the PA configuration of the transmitting device, wherein the parameter set associated with the NLEST-RS is based on the dynamic parameter set scheme and the nonlinear response of the PA configuration, the nonlinear response of the PA configuration being based on the NLEST-RS and the parameter set. Operation of 2610 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2610 may be provided by reference to... Figure 18 The NL-RS Manager 1840 described is used to execute this.

[0406] In 2615, the method may include communicating with the receiving device based on the nonlinear response configured for the PA. Operation of 2615 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 2615 may be determined by reference to... Figure 18 The described nonlinear communication manager 1835 is used to execute this.

[0407] The following provides an overview of the various aspects of this disclosure:

[0408] Aspect 1: A method for wireless communication at a receiving device, comprising: receiving from a transmitting device a channel estimation reference signal transmitted over a bandwidth, the channel estimation reference signal being associated with a power amplifier configuration of the transmitting device; determining a channel estimation measurement associated with the power amplifier configuration based at least in part on the channel estimation reference signal; receiving from the transmitting device a nonlinear estimation reference signal transmitted over a subset of the bandwidth, the nonlinear estimation reference signal being associated with the power amplifier configuration; determining a nonlinear estimation measurement associated with the power amplifier configuration based at least in part on the nonlinear estimation reference signal and the channel estimation reference signal, the nonlinear estimation measurement identifying a nonlinear response of the power amplifier configuration; and communicating with the transmitting device based at least in part on the channel estimation measurement and the nonlinear response of the power amplifier configuration.

[0409] Aspect 2: The method of aspect 1 further includes: receiving a signal identifying a resource configuration for the channel estimation reference signal, the nonlinear estimation reference signal, or both, wherein the channel estimation reference signal and the nonlinear estimation reference signal are received at least in part based on receiving the signal identifying the resource configuration, and the resource configuration for the channel estimation reference signal and the resource configuration for the nonlinear estimation reference signal include the same resource configuration or different resource configurations.

[0410] Aspect 3: The method of any one of Aspects 1 to 2 further includes: receiving one or more instances of the channel estimation reference signal according to a repetition pattern of the channel estimation reference signal, wherein the channel estimation measurement is at least partially based on the one or more instances of the channel estimation reference signal received.

[0411] Aspect 4: The method of any one of Aspects 1 to 3 further includes: receiving one or more instances of the nonlinear estimation reference signal according to a repetition pattern of the nonlinear estimation reference signal, wherein the nonlinear estimation measurement is at least partially based on the one or more instances of the nonlinear estimation reference signal.

[0412] Aspect 5: The method of any one of Aspects 1 to 4 further includes: identifying the antenna configuration of the channel estimation reference signal, wherein the channel estimation measurement is performed with respect to the antenna configuration and the power amplifier configuration.

[0413] Aspect 6: The method of any one of Aspects 1 to 5 further includes: identifying the antenna configuration of the nonlinear estimation reference signal, wherein the nonlinear estimation measurement is performed with respect to the antenna configuration and the power amplifier configuration.

[0414] Aspect 7: The method of any of Aspects 1 to 6, wherein receiving the channel estimation reference signal includes receiving during a first symbol period, and receiving the nonlinear estimation reference signal includes receiving during a second symbol period following the first symbol period.

[0415] Aspect 8: The method of any one of Aspects 1 to 7 further includes: receiving one or more instances of the channel estimation reference signal and one or more instances of the nonlinear reference signal according to periodic scheduling, semi-persistent scheduling, aperiodic scheduling, or any combination thereof.

[0416] Aspect 9: A method for wireless communication at a transmitting device, comprising: identifying a channel estimation reference signal and a nonlinear estimation reference signal associated with a power amplifier configuration of the transmitting device; transmitting the channel estimation reference signal transmitted over a bandwidth to a receiving device; transmitting the nonlinear estimation reference signal transmitted over a subset of the bandwidth to the receiving device; and communicating with the receiving device at least in part based on: a channel estimation measurement based on the channel estimation reference signal and a nonlinear response of the power amplifier configuration based on the nonlinear estimation reference signal and the channel estimation reference signal.

[0417] Aspect 10: The method of aspect 9 further includes: transmitting a signal identifying a resource configuration for the channel estimation reference signal, the nonlinear estimation reference signal, or both, wherein the channel estimation reference signal and the nonlinear estimation reference signal are transmitted at least in part based on the signal identifying the resource configuration, and the resource configuration for the channel estimation reference signal and the resource configuration for the nonlinear estimation reference signal include the same resource configuration or different resource configurations.

[0418] Aspect 11: The method of any one of Aspects 9 to 10 further includes: transmitting one or more instances of the channel estimation reference signal according to a repetition pattern of the channel estimation reference signal, wherein the channel estimation measurement is at least partially based on the one or more instances of transmitting the channel estimation reference signal.

[0419] Aspect 12: The method of any one of Aspects 9 to 11 further includes: selecting a transmit power level to be boosted for the channel estimation reference signal.

[0420] Aspect 13: The method of any one of Aspects 9 to 12 further includes: transmitting one or more instances of the nonlinear estimation reference signal according to a repetition pattern of the nonlinear estimation reference signal, wherein the nonlinear estimation measurement is at least partially based on the one or more instances of the nonlinear estimation reference signal.

[0421] Aspect 14: The method of any one of Aspects 9 to 13 further includes: selecting a boosted transmit power level for estimating a reference signal for the channel.

[0422] Aspect 15: The method of any one of Aspects 9 to 14 further includes: identifying an antenna configuration of the channel estimation reference signal, wherein the channel estimation measurement is performed with respect to the antenna configuration and the power amplifier configuration.

[0423] Aspect 16: The method of any one of Aspects 9 to 15 further includes: identifying the antenna configuration of the nonlinear estimation reference signal, wherein the nonlinear estimation measurement is performed with respect to the antenna configuration and the power amplifier configuration.

[0424] Aspect 17: The method of any of Aspects 9 to 16, wherein transmitting the channel estimation reference signal includes transmitting during the first symbol period, and transmitting the nonlinear estimation reference signal includes transmitting during the second symbol period after the first symbol period.

[0425] Aspect 18: The method of any one of Aspects 9 to 17 further includes: transmitting one or more instances of the channel estimation reference signal and one or more instances of the nonlinear reference signal according to periodic scheduling, semi-persistent scheduling, aperiodic scheduling, or any combination thereof.

[0426] Aspect 19: A method for wireless communication at a receiving device, comprising: determining a dynamic parameter set scheme associated with one or more nonlinear estimation reference signals to be transmitted from a transmitting device according to one or more antenna configurations, each nonlinear estimation reference signal being associated with a corresponding antenna configuration and a power amplifier configuration; receiving from the transmitting device the nonlinear estimation reference signal associated with a power amplifier configuration of the transmitting device; determining a parameter set associated with the nonlinear estimation reference signal based at least in part on the dynamic parameter set scheme and a nonlinear response of the power amplifier configuration, the nonlinear response of the power amplifier configuration being based at least in part on the nonlinear estimation reference signal and the parameter set; and communicating with the transmitting device based at least in part on the nonlinear response of the power amplifier configuration.

[0427] Aspect 20: The method of aspect 19 further includes: determining that the transmission of the nonlinear estimation reference signal is switched from a first multiplexing technique to a second multiplexing technique among one or more multiplexing techniques; and receiving the nonlinear estimation reference signal according to the second multiplexing technique using an index number associated with the nonlinear estimation reference signal for the first multiplexing technique, based at least in part on the dynamic parameter set scheme.

[0428] Aspect 21: The method of aspect 20 further includes: identifying the index number associated with the nonlinear estimation reference signal for the first multiplexing technique based at least in part on the dynamic parameter set scheme, wherein the nonlinear estimation reference signal is received according to the second multiplexing technique based at least in part on the index number.

[0429] Aspect 22: The method of any of Aspects 20 to 21, wherein the first multiplexing technique includes frequency division multiplexing and the second multiplexing technique includes time division multiplexing.

[0430] Aspect 23: The method of any of Aspects 20 to 22, wherein the first multiplexing technique and the second multiplexing technique each include a corresponding time-division multiplexing technique.

[0431] Aspect 24: The method of any of Aspects 20 to 23, wherein the one or more multiplexing techniques include frequency division multiplexing, time division multiplexing, code division multiplexing, or any combination thereof.

[0432] Aspect 25: A method for wireless communication at a transmitting device, comprising: determining a dynamic parameter set scheme associated with one or more nonlinear estimation reference signals to be transmitted to a receiving device according to a corresponding antenna configuration or a power amplifier configuration, each nonlinear estimation reference signal being associated with a corresponding antenna configuration and a power amplifier configuration; transmitting to the receiving device the nonlinear estimation reference signal associated with a power amplifier configuration of the transmitting device, wherein the parameter set associated with the nonlinear estimation reference signal is at least partially based on the dynamic parameter set scheme and a nonlinear response of the power amplifier configuration, the nonlinear response of the power amplifier configuration being at least partially based on the nonlinear estimation reference signal and the parameter set; and communicating with the receiving device at least partially based on the nonlinear response of the power amplifier configuration.

[0433] Aspect 26: The method of aspect 25 further includes: determining that the transmission of the nonlinear estimation reference signal has switched from a first multiplexing technique to a second multiplexing technique in one or more multiplexing techniques; and transmitting the nonlinear estimation reference signal according to the second multiplexing technique using an index number associated with the nonlinear estimation reference signal used in the first multiplexing technique, based at least in part on the dynamic parameter set scheme.

[0434] Aspect 27: The method of aspect 26 further includes: identifying the index number associated with the nonlinear estimation reference signal for the first multiplexing technique based at least in part on the dynamic parameter set scheme, wherein the nonlinear estimation reference signal is transmitted according to the second multiplexing technique based at least in part on the index number.

[0435] Aspect 28: The method of any of Aspects 26 to 27, wherein the first multiplexing technique includes frequency division multiplexing and the second multiplexing technique includes time division multiplexing.

[0436] Aspect 29: The method of any of Aspects 26 to 28, wherein the first multiplexing technique and the second multiplexing technique each include a corresponding time-division multiplexing technique.

[0437] Aspect 30: The method of any of Aspects 26 to 29, wherein the one or more multiplexing techniques include frequency division multiplexing, time division multiplexing, code division multiplexing, or any combination thereof.

[0438] Aspect 31: An apparatus for wireless communication at a receiving device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any of Aspects 1 to 8.

[0439] Aspect 32: An apparatus for wireless communication at a receiving device, comprising at least one means for performing a method as described in any of Aspects 1 to 8.

[0440] Aspect 33: A non-transient computer-readable medium storing code for wireless communication at a receiving device, the code including instructions executable by a processor to perform methods as described in any of Aspects 1 to 8.

[0441] Aspect 34: An apparatus for wireless communication at a transmitting device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any of Aspects 9 to 18.

[0442] Aspect 35: An apparatus for wireless communication at a transmitting device, comprising at least one means for performing a method as described in any of Aspects 9 to 18.

[0443] Aspect 36: A non-transient computer-readable medium storing code for wireless communication at a transmitting device, the code including instructions executable by a processor to perform methods as described in any of Aspects 9 to 18.

[0444] Aspect 37: An apparatus for wireless communication at a receiving device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any of Aspects 19 to 24.

[0445] Aspect 38: An apparatus for wireless communication at a receiving device, comprising at least one means for performing a method as described in any of aspects 19 to 24.

[0446] Aspect 39: A non-transient computer-readable medium storing code for wireless communication at a receiving device, the code including instructions executable by a processor to perform methods as described in any of Aspects 19 to 24.

[0447] Aspect 40: An apparatus for wireless communication at a transmitting device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any of Aspects 25 to 30.

[0448] Aspect 41: An apparatus for wireless communication at a transmitting device, comprising at least one means for performing a method as described in any of aspects 25 to 30.

[0449] Aspect 42: A non-transient computer-readable medium storing code for wireless communication at a transmitting device, the code including instructions executable by a processor to perform methods as described in any of Aspects 25 to 30.

[0450] It should be noted that the methods described in this paper describe possible implementations, and the operations an...

Claims

1. A method for wireless communication at a receiving device, comprising: Receive a channel estimation reference signal transmitted over the bandwidth from the transmitting device, the channel estimation reference signal being associated with the power amplifier configuration of the transmitting device; The channel estimation measurement associated with the power amplifier configuration is determined at least in part based on the channel estimation reference signal; The transmitting device receives a nonlinear estimation reference signal transmitted on a subset of the bandwidth, the nonlinear estimation reference signal being associated with the power amplifier configuration; The nonlinear estimation measurement associated with the power amplifier configuration is determined at least in part based on the nonlinear estimation reference signal and the channel estimation reference signal, the nonlinear estimation measurement identifying the nonlinear response of the power amplifier configuration; as well as The communication with the transmitting device is based at least in part on the nonlinear response of the channel estimation measurement and the power amplifier configuration.

2. The method of claim 1, further comprising: The receiver receives a signal identifying a resource configuration for the channel estimation reference signal, the nonlinear estimation reference signal, or both, wherein the channel estimation reference signal and the nonlinear estimation reference signal are received at least in part based on the reception of the signal identifying the resource configuration, and the resource configuration for the channel estimation reference signal and the resource configuration for the nonlinear estimation reference signal include the same resource configuration or different resource configurations.

3. The method of claim 1, further comprising: One or more instances of the channel estimation reference signal are received according to a repetition pattern of the channel estimation reference signal, wherein the channel estimation measurement is based at least in part on the received one or more instances of the channel estimation reference signal.

4. The method of claim 1, further comprising: One or more instances of the nonlinear estimation reference signal are received according to a repetition pattern of the nonlinear estimation reference signal, wherein the nonlinear estimation measurement is at least partially based on one or more instances of the nonlinear estimation reference signal.

5. The method of claim 1, further comprising: The antenna configuration that identifies the channel estimation reference signal, wherein the channel estimation measurement is performed with respect to the antenna configuration and the power amplifier configuration.

6. The method of claim 1, further comprising: The antenna configuration that identifies the nonlinear estimation reference signal, wherein the nonlinear estimation measurement is performed with respect to the antenna configuration and the power amplifier configuration.

7. The method of claim 1, wherein Receiving the channel estimation reference signal includes receiving it during the first symbol period, and Receiving the nonlinear estimation reference signal includes receiving it during the second symbol period following the first symbol.

8. The method of claim 1, further comprising: One or more instances of the channel estimation reference signal and one or more instances of the nonlinear reference signal are received according to periodic scheduling, semi-persistent scheduling, aperiodic scheduling, or any combination thereof.

9. A method for wireless communication at a transmitting device, comprising: Identify the channel estimation reference signal and nonlinear estimation reference signal associated with the power amplifier configuration of the transmitting device; The channel estimation reference signal transmitted over the bandwidth is transmitted to the receiving device; The nonlinear estimation reference signal transmitted on a subset of the bandwidth is transmitted to the receiving device; as well as The communication with the receiving device is based at least in part on the following: channel estimation measurement based on the channel estimation reference signal and nonlinear response of the power amplifier configuration based on the nonlinear estimation reference signal and the channel estimation reference signal.

10. The method of claim 9, further comprising: A signal is transmitted that identifies the resource configuration of the channel estimation reference signal, the nonlinear estimation reference signal, or both, wherein the channel estimation reference signal and the nonlinear estimation reference signal are transmitted at least in part based on the signal identifying the resource configuration, and the resource configuration for the channel estimation reference signal and the resource configuration for the nonlinear estimation reference signal include the same resource configuration or different resource configurations.

11. The method of claim 9, further comprising: One or more instances of the channel estimation reference signal are transmitted according to a repetition pattern of the channel estimation reference signal, wherein the channel estimation measurement is based at least in part on the transmission of one or more instances of the channel estimation reference signal.

12. The method of claim 9, further comprising: Select the transmit power level to be boosted for the channel estimation reference signal.

13. The method of claim 9, further comprising: One or more instances of the nonlinear estimation reference signal are transmitted according to a repetition pattern of the nonlinear estimation reference signal, wherein the nonlinear estimation measurement is based at least in part on one or more instances of the nonlinear estimation reference signal.

14. The method of claim 9, further comprising: Select a boosted transmit power level for the channel estimation reference signal.

15. The method of claim 9, further comprising: The antenna configuration that identifies the channel estimation reference signal, wherein the channel estimation measurement is performed with respect to the antenna configuration and the power amplifier configuration.

16. The method of claim 9, further comprising: The antenna configuration that identifies the nonlinear estimation reference signal, wherein the nonlinear estimation measurement is performed with respect to the antenna configuration and the power amplifier configuration.

17. The method of claim 9, wherein The transmission of the channel estimation reference signal includes transmission during the first symbol period, and The transmission of the nonlinear estimation reference signal is carried out during the second symbol following the first symbol.

18. The method of claim 9, further comprising: One or more instances of the channel estimation reference signal and one or more instances of the nonlinear reference signal are transmitted according to periodic scheduling, semi-persistent scheduling, aperiodic scheduling, or any combination thereof.

19. A method for wireless communication at a receiving device, comprising: A dynamic parameter set scheme is determined based on one or more antenna configurations and associated with one or more nonlinear estimation reference signals to be transmitted from the transmitting device, each nonlinear estimation reference signal being associated with a corresponding antenna configuration and power amplifier configuration; Receive a nonlinear estimation reference signal associated with the power amplifier configuration of the transmitting device from the transmitting device; The parameter set associated with the nonlinear estimation reference signal is determined at least in part based on the dynamic parameter set scheme and the nonlinear response of the power amplifier configuration, the nonlinear response of the power amplifier configuration being at least in part based on the nonlinear estimation reference signal and the parameter set; as well as The communication with the transmitting device is based at least in part on the nonlinear response of the power amplifier configuration.

20. The method of claim 19, further comprising: The transmission of the nonlinear estimation reference signal is switched from a first multiplexing technique to a second multiplexing technique in one or more multiplexing techniques; as well as The nonlinear estimation reference signal is received according to the second multiplexing technique, at least in part, using an index number associated with the nonlinear estimation reference signal used for the first multiplexing technique, based on the dynamic parameter set scheme.

21. The method of claim 20, further comprising: The index number associated with the nonlinear estimation reference signal used in the first multiplexing technique is identified at least in part based on the dynamic parameter set scheme, wherein the nonlinear estimation reference signal is received according to the second multiplexing technique based at least in part on the index number.

22. The method of claim 20, wherein the first multiplexing technique includes frequency division multiplexing and the second multiplexing technique includes time division multiplexing.

23. The method of claim 20, wherein the first multiplexing technique and the second multiplexing technique each include a corresponding time-division multiplexing technique.

24. The method of claim 20, wherein the one or more multiplexing techniques include frequency division multiplexing, time division multiplexing, code division multiplexing, or any combination thereof.

25. A method for wireless communication at a transmitting device, comprising: A dynamic parameter set scheme is determined based on one or more antenna configurations and associated with one or more nonlinear estimation reference signals to be transmitted to the receiving device, each nonlinear estimation reference signal being associated with a corresponding antenna configuration and power amplifier configuration; The nonlinear estimation reference signal associated with the power amplifier configuration of the transmitting device is transmitted to the receiving device, wherein the parameter set associated with the nonlinear estimation reference signal is based at least in part on the dynamic parameter set scheme and the nonlinear response of the power amplifier configuration, the nonlinear response of the power amplifier configuration being based at least in part on the nonlinear estimation reference signal and the parameter set. as well as The communication with the receiving device is based at least in part on the nonlinear response configured by the power amplifier.

26. The method of claim 25, further comprising: It is determined that the transmission of the nonlinear estimation reference signal has been switched from a first multiplexing technique to a second multiplexing technique in one or more multiplexing techniques; as well as The nonlinear estimation reference signal is transmitted according to the second multiplexing technique, at least in part, using an index number associated with the nonlinear estimation reference signal used in the first multiplexing technique, based on the dynamic parameter set scheme.

27. The method of claim 26, further comprising: The index number associated with the nonlinear estimation reference signal used in the first multiplexing technique is identified at least in part based on the dynamic parameter set scheme, wherein the nonlinear estimation reference signal is transmitted according to the second multiplexing technique based at least in part on the index number.

28. The method of claim 26, wherein the first multiplexing technique includes frequency division multiplexing and the second multiplexing technique includes time division multiplexing.

29. The method of claim 26, wherein the first multiplexing technique and the second multiplexing technique each include a corresponding time-division multiplexing technique.

30. The method of claim 26, wherein the one or more multiplexing techniques include frequency division multiplexing, time division multiplexing, code division multiplexing, or any combination thereof.

31. An apparatus for wireless communication at a receiving device, comprising: One or more memory units; as well as One or more processors coupled to the one or more memories, the one or more processors being configured to: Receive a channel estimation reference signal transmitted over the bandwidth from the transmitting device, the channel estimation reference signal being associated with the power amplifier configuration of the transmitting device; The channel estimation measurement associated with the power amplifier configuration is determined at least in part based on the channel estimation reference signal; The transmitting device receives a nonlinear estimation reference signal transmitted on a subset of the bandwidth, the nonlinear estimation reference signal being associated with the power amplifier configuration; The nonlinear estimation measurement associated with the power amplifier configuration is determined at least in part based on the nonlinear estimation reference signal and the channel estimation reference signal, the nonlinear estimation measurement identifying the nonlinear response of the power amplifier configuration; as well as The communication with the transmitting device is based at least in part on the nonlinear response of the channel estimation measurement and the power amplifier configuration.

32. The apparatus of claim 31, wherein the one or more processors are further configured to perform the method of any one of claims 2-8.

33. An apparatus for wireless communication at a transmitting device, comprising: One or more memory units; as well as One or more processors coupled to the one or more memories, the one or more processors being configured to: Identify the channel estimation reference signal and nonlinear estimation reference signal associated with the power amplifier configuration of the transmitting device; The channel estimation reference signal transmitted over the bandwidth is transmitted to the receiving device; The nonlinear estimation reference signal transmitted on a subset of the bandwidth is transmitted to the receiving device; as well as The communication with the receiving device is based at least in part on the following: channel estimation measurement based on the channel estimation reference signal and nonlinear response of the power amplifier configuration based on the nonlinear estimation reference signal and the channel estimation reference signal.

34. The apparatus of claim 33, wherein the one or more processors are further configured to perform the method of any one of claims 10-18.

35. An apparatus for wireless communication at a receiving device, comprising: One or more memory units; as well as One or more processors coupled to the one or more memories, the one or more processors being configured to: A dynamic parameter set scheme is determined based on one or more antenna configurations and associated with one or more nonlinear estimation reference signals to be transmitted from the transmitting device, each nonlinear estimation reference signal being associated with a corresponding antenna configuration and power amplifier configuration; Receive a nonlinear estimation reference signal associated with the power amplifier configuration of the transmitting device from the transmitting device; The parameter set associated with the nonlinear estimation reference signal is determined at least in part based on the dynamic parameter set scheme and the nonlinear response of the power amplifier configuration, the nonlinear response of the power amplifier configuration being at least in part based on the nonlinear estimation reference signal and the parameter set; as well as The communication with the transmitting device is based at least in part on the nonlinear response of the power amplifier configuration.

36. The apparatus of claim 35, wherein the one or more processors are further configured to perform the method of any one of claims 20-24.

37. An apparatus for wireless communication at a transmitting device, comprising: One or more memory units; as well as One or more processors coupled to the one or more memories, the one or more processors being configured to: A dynamic parameter set scheme is determined based on one or more antenna configurations and associated with one or more nonlinear estimation reference signals to be transmitted to the receiving device, each nonlinear estimation reference signal being associated with a corresponding antenna configuration and power amplifier configuration; The nonlinear estimation reference signal associated with the power amplifier configuration of the transmitting device is transmitted to the receiving device, wherein the parameter set associated with the nonlinear estimation reference signal is based at least in part on the dynamic parameter set scheme and the nonlinear response of the power amplifier configuration, the nonlinear response of the power amplifier configuration being based at least in part on the nonlinear estimation reference signal and the parameter set. as well as The communication with the receiving device is based at least in part on the nonlinear response configured by the power amplifier.

38. The apparatus of claim 37, wherein the one or more processors are further configured to perform the method of any one of claims 26-30.

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